3567 lines
98 KiB
C
3567 lines
98 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* DesignWare High-Definition Multimedia Interface (HDMI) driver
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*
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* Copyright (C) 2013-2015 Mentor Graphics Inc.
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* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
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* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/hdmi.h>
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#include <linux/irq.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/of_device.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/regmap.h>
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#include <linux/dma-mapping.h>
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#include <linux/spinlock.h>
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#include <media/cec-notifier.h>
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#include <uapi/linux/media-bus-format.h>
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#include <uapi/linux/videodev2.h>
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#include <drm/bridge/dw_hdmi.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_bridge.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_of.h>
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#include <drm/drm_print.h>
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#include <drm/drm_probe_helper.h>
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#include <drm/drm_scdc_helper.h>
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#include "dw-hdmi-audio.h"
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#include "dw-hdmi-cec.h"
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#include "dw-hdmi.h"
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#define DDC_CI_ADDR 0x37
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#define DDC_SEGMENT_ADDR 0x30
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#define HDMI_EDID_LEN 512
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/* DW-HDMI Controller >= 0x200a are at least compliant with SCDC version 1 */
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#define SCDC_MIN_SOURCE_VERSION 0x1
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#define HDMI14_MAX_TMDSCLK 340000000
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enum hdmi_datamap {
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RGB444_8B = 0x01,
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RGB444_10B = 0x03,
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RGB444_12B = 0x05,
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RGB444_16B = 0x07,
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YCbCr444_8B = 0x09,
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YCbCr444_10B = 0x0B,
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YCbCr444_12B = 0x0D,
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YCbCr444_16B = 0x0F,
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YCbCr422_8B = 0x16,
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YCbCr422_10B = 0x14,
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YCbCr422_12B = 0x12,
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};
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static const u16 csc_coeff_default[3][4] = {
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{ 0x2000, 0x0000, 0x0000, 0x0000 },
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{ 0x0000, 0x2000, 0x0000, 0x0000 },
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{ 0x0000, 0x0000, 0x2000, 0x0000 }
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};
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static const u16 csc_coeff_rgb_out_eitu601[3][4] = {
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{ 0x2000, 0x6926, 0x74fd, 0x010e },
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{ 0x2000, 0x2cdd, 0x0000, 0x7e9a },
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{ 0x2000, 0x0000, 0x38b4, 0x7e3b }
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};
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static const u16 csc_coeff_rgb_out_eitu709[3][4] = {
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{ 0x2000, 0x7106, 0x7a02, 0x00a7 },
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{ 0x2000, 0x3264, 0x0000, 0x7e6d },
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{ 0x2000, 0x0000, 0x3b61, 0x7e25 }
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};
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static const u16 csc_coeff_rgb_in_eitu601[3][4] = {
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{ 0x2591, 0x1322, 0x074b, 0x0000 },
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{ 0x6535, 0x2000, 0x7acc, 0x0200 },
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{ 0x6acd, 0x7534, 0x2000, 0x0200 }
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};
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static const u16 csc_coeff_rgb_in_eitu709[3][4] = {
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{ 0x2dc5, 0x0d9b, 0x049e, 0x0000 },
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{ 0x62f0, 0x2000, 0x7d11, 0x0200 },
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{ 0x6756, 0x78ab, 0x2000, 0x0200 }
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};
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static const u16 csc_coeff_rgb_full_to_rgb_limited[3][4] = {
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{ 0x1b7c, 0x0000, 0x0000, 0x0020 },
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{ 0x0000, 0x1b7c, 0x0000, 0x0020 },
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{ 0x0000, 0x0000, 0x1b7c, 0x0020 }
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};
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struct hdmi_vmode {
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bool mdataenablepolarity;
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unsigned int mpixelclock;
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unsigned int mpixelrepetitioninput;
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unsigned int mpixelrepetitionoutput;
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unsigned int mtmdsclock;
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};
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struct hdmi_data_info {
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unsigned int enc_in_bus_format;
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unsigned int enc_out_bus_format;
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unsigned int enc_in_encoding;
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unsigned int enc_out_encoding;
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unsigned int pix_repet_factor;
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unsigned int hdcp_enable;
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struct hdmi_vmode video_mode;
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bool rgb_limited_range;
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};
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struct dw_hdmi_i2c {
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struct i2c_adapter adap;
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struct mutex lock; /* used to serialize data transfers */
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struct completion cmp;
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u8 stat;
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u8 slave_reg;
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bool is_regaddr;
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bool is_segment;
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};
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struct dw_hdmi_phy_data {
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enum dw_hdmi_phy_type type;
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const char *name;
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unsigned int gen;
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bool has_svsret;
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int (*configure)(struct dw_hdmi *hdmi,
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const struct dw_hdmi_plat_data *pdata,
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unsigned long mpixelclock);
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};
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struct dw_hdmi {
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struct drm_connector connector;
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struct drm_bridge bridge;
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struct drm_bridge *next_bridge;
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unsigned int version;
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struct platform_device *audio;
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struct platform_device *cec;
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struct device *dev;
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struct clk *isfr_clk;
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struct clk *iahb_clk;
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struct clk *cec_clk;
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struct dw_hdmi_i2c *i2c;
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struct hdmi_data_info hdmi_data;
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const struct dw_hdmi_plat_data *plat_data;
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int vic;
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u8 edid[HDMI_EDID_LEN];
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struct {
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const struct dw_hdmi_phy_ops *ops;
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const char *name;
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void *data;
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bool enabled;
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} phy;
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struct drm_display_mode previous_mode;
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struct i2c_adapter *ddc;
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void __iomem *regs;
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bool sink_is_hdmi;
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bool sink_has_audio;
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struct pinctrl *pinctrl;
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struct pinctrl_state *default_state;
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struct pinctrl_state *unwedge_state;
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struct mutex mutex; /* for state below and previous_mode */
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enum drm_connector_force force; /* mutex-protected force state */
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struct drm_connector *curr_conn;/* current connector (only valid when !disabled) */
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bool disabled; /* DRM has disabled our bridge */
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bool bridge_is_on; /* indicates the bridge is on */
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bool rxsense; /* rxsense state */
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u8 phy_mask; /* desired phy int mask settings */
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u8 mc_clkdis; /* clock disable register */
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spinlock_t audio_lock;
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struct mutex audio_mutex;
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unsigned int sample_rate;
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unsigned int audio_cts;
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unsigned int audio_n;
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bool audio_enable;
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unsigned int reg_shift;
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struct regmap *regm;
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void (*enable_audio)(struct dw_hdmi *hdmi);
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void (*disable_audio)(struct dw_hdmi *hdmi);
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struct mutex cec_notifier_mutex;
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struct cec_notifier *cec_notifier;
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hdmi_codec_plugged_cb plugged_cb;
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struct device *codec_dev;
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enum drm_connector_status last_connector_result;
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};
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#define HDMI_IH_PHY_STAT0_RX_SENSE \
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(HDMI_IH_PHY_STAT0_RX_SENSE0 | HDMI_IH_PHY_STAT0_RX_SENSE1 | \
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HDMI_IH_PHY_STAT0_RX_SENSE2 | HDMI_IH_PHY_STAT0_RX_SENSE3)
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#define HDMI_PHY_RX_SENSE \
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(HDMI_PHY_RX_SENSE0 | HDMI_PHY_RX_SENSE1 | \
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HDMI_PHY_RX_SENSE2 | HDMI_PHY_RX_SENSE3)
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static inline void hdmi_writeb(struct dw_hdmi *hdmi, u8 val, int offset)
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{
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regmap_write(hdmi->regm, offset << hdmi->reg_shift, val);
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}
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static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset)
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{
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unsigned int val = 0;
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regmap_read(hdmi->regm, offset << hdmi->reg_shift, &val);
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return val;
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}
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static void handle_plugged_change(struct dw_hdmi *hdmi, bool plugged)
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{
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if (hdmi->plugged_cb && hdmi->codec_dev)
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hdmi->plugged_cb(hdmi->codec_dev, plugged);
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}
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int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn,
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struct device *codec_dev)
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{
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bool plugged;
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mutex_lock(&hdmi->mutex);
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hdmi->plugged_cb = fn;
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hdmi->codec_dev = codec_dev;
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plugged = hdmi->last_connector_result == connector_status_connected;
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handle_plugged_change(hdmi, plugged);
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mutex_unlock(&hdmi->mutex);
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return 0;
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}
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EXPORT_SYMBOL_GPL(dw_hdmi_set_plugged_cb);
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static void hdmi_modb(struct dw_hdmi *hdmi, u8 data, u8 mask, unsigned reg)
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{
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regmap_update_bits(hdmi->regm, reg << hdmi->reg_shift, mask, data);
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}
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static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg,
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u8 shift, u8 mask)
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{
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hdmi_modb(hdmi, data << shift, mask, reg);
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}
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static void dw_hdmi_i2c_init(struct dw_hdmi *hdmi)
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{
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hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL,
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HDMI_PHY_I2CM_INT_ADDR);
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hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL |
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HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL,
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HDMI_PHY_I2CM_CTLINT_ADDR);
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/* Software reset */
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hdmi_writeb(hdmi, 0x00, HDMI_I2CM_SOFTRSTZ);
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/* Set Standard Mode speed (determined to be 100KHz on iMX6) */
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hdmi_writeb(hdmi, 0x00, HDMI_I2CM_DIV);
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/* Set done, not acknowledged and arbitration interrupt polarities */
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hdmi_writeb(hdmi, HDMI_I2CM_INT_DONE_POL, HDMI_I2CM_INT);
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hdmi_writeb(hdmi, HDMI_I2CM_CTLINT_NAC_POL | HDMI_I2CM_CTLINT_ARB_POL,
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HDMI_I2CM_CTLINT);
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/* Clear DONE and ERROR interrupts */
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hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
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HDMI_IH_I2CM_STAT0);
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/* Mute DONE and ERROR interrupts */
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hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
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HDMI_IH_MUTE_I2CM_STAT0);
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}
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static bool dw_hdmi_i2c_unwedge(struct dw_hdmi *hdmi)
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{
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/* If no unwedge state then give up */
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if (!hdmi->unwedge_state)
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return false;
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dev_info(hdmi->dev, "Attempting to unwedge stuck i2c bus\n");
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/*
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* This is a huge hack to workaround a problem where the dw_hdmi i2c
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* bus could sometimes get wedged. Once wedged there doesn't appear
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* to be any way to unwedge it (including the HDMI_I2CM_SOFTRSTZ)
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* other than pulsing the SDA line.
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*
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* We appear to be able to pulse the SDA line (in the eyes of dw_hdmi)
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* by:
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* 1. Remux the pin as a GPIO output, driven low.
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* 2. Wait a little while. 1 ms seems to work, but we'll do 10.
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* 3. Immediately jump to remux the pin as dw_hdmi i2c again.
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*
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* At the moment of remuxing, the line will still be low due to its
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* recent stint as an output, but then it will be pulled high by the
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* (presumed) external pullup. dw_hdmi seems to see this as a rising
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* edge and that seems to get it out of its jam.
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*
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* This wedging was only ever seen on one TV, and only on one of
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* its HDMI ports. It happened when the TV was powered on while the
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* device was plugged in. A scope trace shows the TV bringing both SDA
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* and SCL low, then bringing them both back up at roughly the same
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* time. Presumably this confuses dw_hdmi because it saw activity but
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* no real STOP (maybe it thinks there's another master on the bus?).
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* Giving it a clean rising edge of SDA while SCL is already high
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* presumably makes dw_hdmi see a STOP which seems to bring dw_hdmi out
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* of its stupor.
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*
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* Note that after coming back alive, transfers seem to immediately
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* resume, so if we unwedge due to a timeout we should wait a little
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* longer for our transfer to finish, since it might have just started
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* now.
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*/
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pinctrl_select_state(hdmi->pinctrl, hdmi->unwedge_state);
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msleep(10);
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pinctrl_select_state(hdmi->pinctrl, hdmi->default_state);
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return true;
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}
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static int dw_hdmi_i2c_wait(struct dw_hdmi *hdmi)
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{
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struct dw_hdmi_i2c *i2c = hdmi->i2c;
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int stat;
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stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
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if (!stat) {
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/* If we can't unwedge, return timeout */
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if (!dw_hdmi_i2c_unwedge(hdmi))
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return -EAGAIN;
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/* We tried to unwedge; give it another chance */
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stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
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if (!stat)
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return -EAGAIN;
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}
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/* Check for error condition on the bus */
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if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR)
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return -EIO;
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return 0;
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}
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static int dw_hdmi_i2c_read(struct dw_hdmi *hdmi,
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unsigned char *buf, unsigned int length)
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{
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struct dw_hdmi_i2c *i2c = hdmi->i2c;
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int ret;
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if (!i2c->is_regaddr) {
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dev_dbg(hdmi->dev, "set read register address to 0\n");
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i2c->slave_reg = 0x00;
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i2c->is_regaddr = true;
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}
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while (length--) {
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reinit_completion(&i2c->cmp);
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hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
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if (i2c->is_segment)
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hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ_EXT,
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HDMI_I2CM_OPERATION);
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else
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hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ,
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HDMI_I2CM_OPERATION);
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ret = dw_hdmi_i2c_wait(hdmi);
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if (ret)
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return ret;
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*buf++ = hdmi_readb(hdmi, HDMI_I2CM_DATAI);
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}
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i2c->is_segment = false;
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return 0;
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}
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static int dw_hdmi_i2c_write(struct dw_hdmi *hdmi,
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unsigned char *buf, unsigned int length)
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{
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struct dw_hdmi_i2c *i2c = hdmi->i2c;
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int ret;
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if (!i2c->is_regaddr) {
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/* Use the first write byte as register address */
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i2c->slave_reg = buf[0];
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length--;
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buf++;
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i2c->is_regaddr = true;
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}
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while (length--) {
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reinit_completion(&i2c->cmp);
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hdmi_writeb(hdmi, *buf++, HDMI_I2CM_DATAO);
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hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
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hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_WRITE,
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HDMI_I2CM_OPERATION);
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ret = dw_hdmi_i2c_wait(hdmi);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap,
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struct i2c_msg *msgs, int num)
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{
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struct dw_hdmi *hdmi = i2c_get_adapdata(adap);
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struct dw_hdmi_i2c *i2c = hdmi->i2c;
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u8 addr = msgs[0].addr;
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int i, ret = 0;
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if (addr == DDC_CI_ADDR)
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/*
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* The internal I2C controller does not support the multi-byte
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* read and write operations needed for DDC/CI.
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* TOFIX: Blacklist the DDC/CI address until we filter out
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* unsupported I2C operations.
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*/
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return -EOPNOTSUPP;
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dev_dbg(hdmi->dev, "xfer: num: %d, addr: %#x\n", num, addr);
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for (i = 0; i < num; i++) {
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if (msgs[i].len == 0) {
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dev_dbg(hdmi->dev,
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"unsupported transfer %d/%d, no data\n",
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i + 1, num);
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return -EOPNOTSUPP;
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}
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}
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mutex_lock(&i2c->lock);
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/* Unmute DONE and ERROR interrupts */
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hdmi_writeb(hdmi, 0x00, HDMI_IH_MUTE_I2CM_STAT0);
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/* Set slave device address taken from the first I2C message */
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hdmi_writeb(hdmi, addr, HDMI_I2CM_SLAVE);
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/* Set slave device register address on transfer */
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i2c->is_regaddr = false;
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/* Set segment pointer for I2C extended read mode operation */
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i2c->is_segment = false;
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for (i = 0; i < num; i++) {
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dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n",
|
|
i + 1, num, msgs[i].len, msgs[i].flags);
|
|
if (msgs[i].addr == DDC_SEGMENT_ADDR && msgs[i].len == 1) {
|
|
i2c->is_segment = true;
|
|
hdmi_writeb(hdmi, DDC_SEGMENT_ADDR, HDMI_I2CM_SEGADDR);
|
|
hdmi_writeb(hdmi, *msgs[i].buf, HDMI_I2CM_SEGPTR);
|
|
} else {
|
|
if (msgs[i].flags & I2C_M_RD)
|
|
ret = dw_hdmi_i2c_read(hdmi, msgs[i].buf,
|
|
msgs[i].len);
|
|
else
|
|
ret = dw_hdmi_i2c_write(hdmi, msgs[i].buf,
|
|
msgs[i].len);
|
|
}
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
|
|
if (!ret)
|
|
ret = num;
|
|
|
|
/* Mute DONE and ERROR interrupts */
|
|
hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
|
|
HDMI_IH_MUTE_I2CM_STAT0);
|
|
|
|
mutex_unlock(&i2c->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static u32 dw_hdmi_i2c_func(struct i2c_adapter *adapter)
|
|
{
|
|
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
|
|
}
|
|
|
|
static const struct i2c_algorithm dw_hdmi_algorithm = {
|
|
.master_xfer = dw_hdmi_i2c_xfer,
|
|
.functionality = dw_hdmi_i2c_func,
|
|
};
|
|
|
|
static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi)
|
|
{
|
|
struct i2c_adapter *adap;
|
|
struct dw_hdmi_i2c *i2c;
|
|
int ret;
|
|
|
|
i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
|
|
if (!i2c)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
mutex_init(&i2c->lock);
|
|
init_completion(&i2c->cmp);
|
|
|
|
adap = &i2c->adap;
|
|
adap->class = I2C_CLASS_DDC;
|
|
adap->owner = THIS_MODULE;
|
|
adap->dev.parent = hdmi->dev;
|
|
adap->algo = &dw_hdmi_algorithm;
|
|
strlcpy(adap->name, "DesignWare HDMI", sizeof(adap->name));
|
|
i2c_set_adapdata(adap, hdmi);
|
|
|
|
ret = i2c_add_adapter(adap);
|
|
if (ret) {
|
|
dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
|
|
devm_kfree(hdmi->dev, i2c);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
hdmi->i2c = i2c;
|
|
|
|
dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name);
|
|
|
|
return adap;
|
|
}
|
|
|
|
static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts,
|
|
unsigned int n)
|
|
{
|
|
/* Must be set/cleared first */
|
|
hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
|
|
|
|
/* nshift factor = 0 */
|
|
hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3);
|
|
|
|
/* Use automatic CTS generation mode when CTS is not set */
|
|
if (cts)
|
|
hdmi_writeb(hdmi, ((cts >> 16) &
|
|
HDMI_AUD_CTS3_AUDCTS19_16_MASK) |
|
|
HDMI_AUD_CTS3_CTS_MANUAL,
|
|
HDMI_AUD_CTS3);
|
|
else
|
|
hdmi_writeb(hdmi, 0, HDMI_AUD_CTS3);
|
|
hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
|
|
hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1);
|
|
|
|
hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3);
|
|
hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
|
|
hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1);
|
|
}
|
|
|
|
static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk)
|
|
{
|
|
unsigned int n = (128 * freq) / 1000;
|
|
unsigned int mult = 1;
|
|
|
|
while (freq > 48000) {
|
|
mult *= 2;
|
|
freq /= 2;
|
|
}
|
|
|
|
switch (freq) {
|
|
case 32000:
|
|
if (pixel_clk == 25175000)
|
|
n = 4576;
|
|
else if (pixel_clk == 27027000)
|
|
n = 4096;
|
|
else if (pixel_clk == 74176000 || pixel_clk == 148352000)
|
|
n = 11648;
|
|
else
|
|
n = 4096;
|
|
n *= mult;
|
|
break;
|
|
|
|
case 44100:
|
|
if (pixel_clk == 25175000)
|
|
n = 7007;
|
|
else if (pixel_clk == 74176000)
|
|
n = 17836;
|
|
else if (pixel_clk == 148352000)
|
|
n = 8918;
|
|
else
|
|
n = 6272;
|
|
n *= mult;
|
|
break;
|
|
|
|
case 48000:
|
|
if (pixel_clk == 25175000)
|
|
n = 6864;
|
|
else if (pixel_clk == 27027000)
|
|
n = 6144;
|
|
else if (pixel_clk == 74176000)
|
|
n = 11648;
|
|
else if (pixel_clk == 148352000)
|
|
n = 5824;
|
|
else
|
|
n = 6144;
|
|
n *= mult;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
/*
|
|
* When transmitting IEC60958 linear PCM audio, these registers allow to
|
|
* configure the channel status information of all the channel status
|
|
* bits in the IEC60958 frame. For the moment this configuration is only
|
|
* used when the I2S audio interface, General Purpose Audio (GPA),
|
|
* or AHB audio DMA (AHBAUDDMA) interface is active
|
|
* (for S/PDIF interface this information comes from the stream).
|
|
*/
|
|
void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
|
|
u8 *channel_status)
|
|
{
|
|
/*
|
|
* Set channel status register for frequency and word length.
|
|
* Use default values for other registers.
|
|
*/
|
|
hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
|
|
hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);
|
|
|
|
static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
|
|
unsigned long pixel_clk, unsigned int sample_rate)
|
|
{
|
|
unsigned long ftdms = pixel_clk;
|
|
unsigned int n, cts;
|
|
u8 config3;
|
|
u64 tmp;
|
|
|
|
n = hdmi_compute_n(sample_rate, pixel_clk);
|
|
|
|
config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID);
|
|
|
|
/* Only compute CTS when using internal AHB audio */
|
|
if (config3 & HDMI_CONFIG3_AHBAUDDMA) {
|
|
/*
|
|
* Compute the CTS value from the N value. Note that CTS and N
|
|
* can be up to 20 bits in total, so we need 64-bit math. Also
|
|
* note that our TDMS clock is not fully accurate; it is
|
|
* accurate to kHz. This can introduce an unnecessary remainder
|
|
* in the calculation below, so we don't try to warn about that.
|
|
*/
|
|
tmp = (u64)ftdms * n;
|
|
do_div(tmp, 128 * sample_rate);
|
|
cts = tmp;
|
|
|
|
dev_dbg(hdmi->dev, "%s: fs=%uHz ftdms=%lu.%03luMHz N=%d cts=%d\n",
|
|
__func__, sample_rate,
|
|
ftdms / 1000000, (ftdms / 1000) % 1000,
|
|
n, cts);
|
|
} else {
|
|
cts = 0;
|
|
}
|
|
|
|
spin_lock_irq(&hdmi->audio_lock);
|
|
hdmi->audio_n = n;
|
|
hdmi->audio_cts = cts;
|
|
hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0);
|
|
spin_unlock_irq(&hdmi->audio_lock);
|
|
}
|
|
|
|
static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi)
|
|
{
|
|
mutex_lock(&hdmi->audio_mutex);
|
|
hdmi_set_clk_regenerator(hdmi, 74250000, hdmi->sample_rate);
|
|
mutex_unlock(&hdmi->audio_mutex);
|
|
}
|
|
|
|
static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi)
|
|
{
|
|
mutex_lock(&hdmi->audio_mutex);
|
|
hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock,
|
|
hdmi->sample_rate);
|
|
mutex_unlock(&hdmi->audio_mutex);
|
|
}
|
|
|
|
void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate)
|
|
{
|
|
mutex_lock(&hdmi->audio_mutex);
|
|
hdmi->sample_rate = rate;
|
|
hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock,
|
|
hdmi->sample_rate);
|
|
mutex_unlock(&hdmi->audio_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate);
|
|
|
|
void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt)
|
|
{
|
|
u8 layout;
|
|
|
|
mutex_lock(&hdmi->audio_mutex);
|
|
|
|
/*
|
|
* For >2 channel PCM audio, we need to select layout 1
|
|
* and set an appropriate channel map.
|
|
*/
|
|
if (cnt > 2)
|
|
layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT1;
|
|
else
|
|
layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT0;
|
|
|
|
hdmi_modb(hdmi, layout, HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_MASK,
|
|
HDMI_FC_AUDSCONF);
|
|
|
|
/* Set the audio infoframes channel count */
|
|
hdmi_modb(hdmi, (cnt - 1) << HDMI_FC_AUDICONF0_CC_OFFSET,
|
|
HDMI_FC_AUDICONF0_CC_MASK, HDMI_FC_AUDICONF0);
|
|
|
|
mutex_unlock(&hdmi->audio_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_count);
|
|
|
|
void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca)
|
|
{
|
|
mutex_lock(&hdmi->audio_mutex);
|
|
|
|
hdmi_writeb(hdmi, ca, HDMI_FC_AUDICONF2);
|
|
|
|
mutex_unlock(&hdmi->audio_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_allocation);
|
|
|
|
static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi, bool enable)
|
|
{
|
|
if (enable)
|
|
hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE;
|
|
else
|
|
hdmi->mc_clkdis |= HDMI_MC_CLKDIS_AUDCLK_DISABLE;
|
|
hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
|
|
}
|
|
|
|
static u8 *hdmi_audio_get_eld(struct dw_hdmi *hdmi)
|
|
{
|
|
if (!hdmi->curr_conn)
|
|
return NULL;
|
|
|
|
return hdmi->curr_conn->eld;
|
|
}
|
|
|
|
static void dw_hdmi_ahb_audio_enable(struct dw_hdmi *hdmi)
|
|
{
|
|
hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
|
|
}
|
|
|
|
static void dw_hdmi_ahb_audio_disable(struct dw_hdmi *hdmi)
|
|
{
|
|
hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0);
|
|
}
|
|
|
|
static void dw_hdmi_i2s_audio_enable(struct dw_hdmi *hdmi)
|
|
{
|
|
hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
|
|
hdmi_enable_audio_clk(hdmi, true);
|
|
}
|
|
|
|
static void dw_hdmi_i2s_audio_disable(struct dw_hdmi *hdmi)
|
|
{
|
|
hdmi_enable_audio_clk(hdmi, false);
|
|
}
|
|
|
|
void dw_hdmi_audio_enable(struct dw_hdmi *hdmi)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&hdmi->audio_lock, flags);
|
|
hdmi->audio_enable = true;
|
|
if (hdmi->enable_audio)
|
|
hdmi->enable_audio(hdmi);
|
|
spin_unlock_irqrestore(&hdmi->audio_lock, flags);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_audio_enable);
|
|
|
|
void dw_hdmi_audio_disable(struct dw_hdmi *hdmi)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&hdmi->audio_lock, flags);
|
|
hdmi->audio_enable = false;
|
|
if (hdmi->disable_audio)
|
|
hdmi->disable_audio(hdmi);
|
|
spin_unlock_irqrestore(&hdmi->audio_lock, flags);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_audio_disable);
|
|
|
|
static bool hdmi_bus_fmt_is_rgb(unsigned int bus_format)
|
|
{
|
|
switch (bus_format) {
|
|
case MEDIA_BUS_FMT_RGB888_1X24:
|
|
case MEDIA_BUS_FMT_RGB101010_1X30:
|
|
case MEDIA_BUS_FMT_RGB121212_1X36:
|
|
case MEDIA_BUS_FMT_RGB161616_1X48:
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool hdmi_bus_fmt_is_yuv444(unsigned int bus_format)
|
|
{
|
|
switch (bus_format) {
|
|
case MEDIA_BUS_FMT_YUV8_1X24:
|
|
case MEDIA_BUS_FMT_YUV10_1X30:
|
|
case MEDIA_BUS_FMT_YUV12_1X36:
|
|
case MEDIA_BUS_FMT_YUV16_1X48:
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool hdmi_bus_fmt_is_yuv422(unsigned int bus_format)
|
|
{
|
|
switch (bus_format) {
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
|
case MEDIA_BUS_FMT_UYVY10_1X20:
|
|
case MEDIA_BUS_FMT_UYVY12_1X24:
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool hdmi_bus_fmt_is_yuv420(unsigned int bus_format)
|
|
{
|
|
switch (bus_format) {
|
|
case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
|
|
case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
|
|
case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
|
|
case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static int hdmi_bus_fmt_color_depth(unsigned int bus_format)
|
|
{
|
|
switch (bus_format) {
|
|
case MEDIA_BUS_FMT_RGB888_1X24:
|
|
case MEDIA_BUS_FMT_YUV8_1X24:
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
|
case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
|
|
return 8;
|
|
|
|
case MEDIA_BUS_FMT_RGB101010_1X30:
|
|
case MEDIA_BUS_FMT_YUV10_1X30:
|
|
case MEDIA_BUS_FMT_UYVY10_1X20:
|
|
case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
|
|
return 10;
|
|
|
|
case MEDIA_BUS_FMT_RGB121212_1X36:
|
|
case MEDIA_BUS_FMT_YUV12_1X36:
|
|
case MEDIA_BUS_FMT_UYVY12_1X24:
|
|
case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
|
|
return 12;
|
|
|
|
case MEDIA_BUS_FMT_RGB161616_1X48:
|
|
case MEDIA_BUS_FMT_YUV16_1X48:
|
|
case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
|
|
return 16;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* this submodule is responsible for the video data synchronization.
|
|
* for example, for RGB 4:4:4 input, the data map is defined as
|
|
* pin{47~40} <==> R[7:0]
|
|
* pin{31~24} <==> G[7:0]
|
|
* pin{15~8} <==> B[7:0]
|
|
*/
|
|
static void hdmi_video_sample(struct dw_hdmi *hdmi)
|
|
{
|
|
int color_format = 0;
|
|
u8 val;
|
|
|
|
switch (hdmi->hdmi_data.enc_in_bus_format) {
|
|
case MEDIA_BUS_FMT_RGB888_1X24:
|
|
color_format = 0x01;
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB101010_1X30:
|
|
color_format = 0x03;
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB121212_1X36:
|
|
color_format = 0x05;
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB161616_1X48:
|
|
color_format = 0x07;
|
|
break;
|
|
|
|
case MEDIA_BUS_FMT_YUV8_1X24:
|
|
case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
|
|
color_format = 0x09;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUV10_1X30:
|
|
case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
|
|
color_format = 0x0B;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUV12_1X36:
|
|
case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
|
|
color_format = 0x0D;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUV16_1X48:
|
|
case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
|
|
color_format = 0x0F;
|
|
break;
|
|
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
|
color_format = 0x16;
|
|
break;
|
|
case MEDIA_BUS_FMT_UYVY10_1X20:
|
|
color_format = 0x14;
|
|
break;
|
|
case MEDIA_BUS_FMT_UYVY12_1X24:
|
|
color_format = 0x12;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE |
|
|
((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) &
|
|
HDMI_TX_INVID0_VIDEO_MAPPING_MASK);
|
|
hdmi_writeb(hdmi, val, HDMI_TX_INVID0);
|
|
|
|
/* Enable TX stuffing: When DE is inactive, fix the output data to 0 */
|
|
val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE |
|
|
HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE |
|
|
HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE;
|
|
hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING);
|
|
hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0);
|
|
hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1);
|
|
hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0);
|
|
hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1);
|
|
hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0);
|
|
hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1);
|
|
}
|
|
|
|
static int is_color_space_conversion(struct dw_hdmi *hdmi)
|
|
{
|
|
struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data;
|
|
bool is_input_rgb, is_output_rgb;
|
|
|
|
is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_in_bus_format);
|
|
is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_out_bus_format);
|
|
|
|
return (is_input_rgb != is_output_rgb) ||
|
|
(is_input_rgb && is_output_rgb && hdmi_data->rgb_limited_range);
|
|
}
|
|
|
|
static int is_color_space_decimation(struct dw_hdmi *hdmi)
|
|
{
|
|
if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
|
|
return 0;
|
|
|
|
if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format) ||
|
|
hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_in_bus_format))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int is_color_space_interpolation(struct dw_hdmi *hdmi)
|
|
{
|
|
if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_in_bus_format))
|
|
return 0;
|
|
|
|
if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) ||
|
|
hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool is_csc_needed(struct dw_hdmi *hdmi)
|
|
{
|
|
return is_color_space_conversion(hdmi) ||
|
|
is_color_space_decimation(hdmi) ||
|
|
is_color_space_interpolation(hdmi);
|
|
}
|
|
|
|
static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi)
|
|
{
|
|
const u16 (*csc_coeff)[3][4] = &csc_coeff_default;
|
|
bool is_input_rgb, is_output_rgb;
|
|
unsigned i;
|
|
u32 csc_scale = 1;
|
|
|
|
is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format);
|
|
is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format);
|
|
|
|
if (!is_input_rgb && is_output_rgb) {
|
|
if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601)
|
|
csc_coeff = &csc_coeff_rgb_out_eitu601;
|
|
else
|
|
csc_coeff = &csc_coeff_rgb_out_eitu709;
|
|
} else if (is_input_rgb && !is_output_rgb) {
|
|
if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601)
|
|
csc_coeff = &csc_coeff_rgb_in_eitu601;
|
|
else
|
|
csc_coeff = &csc_coeff_rgb_in_eitu709;
|
|
csc_scale = 0;
|
|
} else if (is_input_rgb && is_output_rgb &&
|
|
hdmi->hdmi_data.rgb_limited_range) {
|
|
csc_coeff = &csc_coeff_rgb_full_to_rgb_limited;
|
|
}
|
|
|
|
/* The CSC registers are sequential, alternating MSB then LSB */
|
|
for (i = 0; i < ARRAY_SIZE(csc_coeff_default[0]); i++) {
|
|
u16 coeff_a = (*csc_coeff)[0][i];
|
|
u16 coeff_b = (*csc_coeff)[1][i];
|
|
u16 coeff_c = (*csc_coeff)[2][i];
|
|
|
|
hdmi_writeb(hdmi, coeff_a & 0xff, HDMI_CSC_COEF_A1_LSB + i * 2);
|
|
hdmi_writeb(hdmi, coeff_a >> 8, HDMI_CSC_COEF_A1_MSB + i * 2);
|
|
hdmi_writeb(hdmi, coeff_b & 0xff, HDMI_CSC_COEF_B1_LSB + i * 2);
|
|
hdmi_writeb(hdmi, coeff_b >> 8, HDMI_CSC_COEF_B1_MSB + i * 2);
|
|
hdmi_writeb(hdmi, coeff_c & 0xff, HDMI_CSC_COEF_C1_LSB + i * 2);
|
|
hdmi_writeb(hdmi, coeff_c >> 8, HDMI_CSC_COEF_C1_MSB + i * 2);
|
|
}
|
|
|
|
hdmi_modb(hdmi, csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK,
|
|
HDMI_CSC_SCALE);
|
|
}
|
|
|
|
static void hdmi_video_csc(struct dw_hdmi *hdmi)
|
|
{
|
|
int color_depth = 0;
|
|
int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE;
|
|
int decimation = 0;
|
|
|
|
/* YCC422 interpolation to 444 mode */
|
|
if (is_color_space_interpolation(hdmi))
|
|
interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1;
|
|
else if (is_color_space_decimation(hdmi))
|
|
decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3;
|
|
|
|
switch (hdmi_bus_fmt_color_depth(hdmi->hdmi_data.enc_out_bus_format)) {
|
|
case 8:
|
|
color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP;
|
|
break;
|
|
case 10:
|
|
color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP;
|
|
break;
|
|
case 12:
|
|
color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP;
|
|
break;
|
|
case 16:
|
|
color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* Configure the CSC registers */
|
|
hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG);
|
|
hdmi_modb(hdmi, color_depth, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK,
|
|
HDMI_CSC_SCALE);
|
|
|
|
dw_hdmi_update_csc_coeffs(hdmi);
|
|
}
|
|
|
|
/*
|
|
* HDMI video packetizer is used to packetize the data.
|
|
* for example, if input is YCC422 mode or repeater is used,
|
|
* data should be repacked this module can be bypassed.
|
|
*/
|
|
static void hdmi_video_packetize(struct dw_hdmi *hdmi)
|
|
{
|
|
unsigned int color_depth = 0;
|
|
unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit;
|
|
unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP;
|
|
struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data;
|
|
u8 val, vp_conf;
|
|
|
|
if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) ||
|
|
hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format) ||
|
|
hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) {
|
|
switch (hdmi_bus_fmt_color_depth(
|
|
hdmi->hdmi_data.enc_out_bus_format)) {
|
|
case 8:
|
|
color_depth = 4;
|
|
output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
|
|
break;
|
|
case 10:
|
|
color_depth = 5;
|
|
break;
|
|
case 12:
|
|
color_depth = 6;
|
|
break;
|
|
case 16:
|
|
color_depth = 7;
|
|
break;
|
|
default:
|
|
output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
|
|
}
|
|
} else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) {
|
|
switch (hdmi_bus_fmt_color_depth(
|
|
hdmi->hdmi_data.enc_out_bus_format)) {
|
|
case 0:
|
|
case 8:
|
|
remap_size = HDMI_VP_REMAP_YCC422_16bit;
|
|
break;
|
|
case 10:
|
|
remap_size = HDMI_VP_REMAP_YCC422_20bit;
|
|
break;
|
|
case 12:
|
|
remap_size = HDMI_VP_REMAP_YCC422_24bit;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422;
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
/* set the packetizer registers */
|
|
val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) &
|
|
HDMI_VP_PR_CD_COLOR_DEPTH_MASK) |
|
|
((hdmi_data->pix_repet_factor <<
|
|
HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) &
|
|
HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK);
|
|
hdmi_writeb(hdmi, val, HDMI_VP_PR_CD);
|
|
|
|
hdmi_modb(hdmi, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE,
|
|
HDMI_VP_STUFF_PR_STUFFING_MASK, HDMI_VP_STUFF);
|
|
|
|
/* Data from pixel repeater block */
|
|
if (hdmi_data->pix_repet_factor > 1) {
|
|
vp_conf = HDMI_VP_CONF_PR_EN_ENABLE |
|
|
HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER;
|
|
} else { /* data from packetizer block */
|
|
vp_conf = HDMI_VP_CONF_PR_EN_DISABLE |
|
|
HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER;
|
|
}
|
|
|
|
hdmi_modb(hdmi, vp_conf,
|
|
HDMI_VP_CONF_PR_EN_MASK |
|
|
HDMI_VP_CONF_BYPASS_SELECT_MASK, HDMI_VP_CONF);
|
|
|
|
hdmi_modb(hdmi, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET,
|
|
HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, HDMI_VP_STUFF);
|
|
|
|
hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP);
|
|
|
|
if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) {
|
|
vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
|
|
HDMI_VP_CONF_PP_EN_ENABLE |
|
|
HDMI_VP_CONF_YCC422_EN_DISABLE;
|
|
} else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) {
|
|
vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
|
|
HDMI_VP_CONF_PP_EN_DISABLE |
|
|
HDMI_VP_CONF_YCC422_EN_ENABLE;
|
|
} else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) {
|
|
vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE |
|
|
HDMI_VP_CONF_PP_EN_DISABLE |
|
|
HDMI_VP_CONF_YCC422_EN_DISABLE;
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
hdmi_modb(hdmi, vp_conf,
|
|
HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK |
|
|
HDMI_VP_CONF_YCC422_EN_MASK, HDMI_VP_CONF);
|
|
|
|
hdmi_modb(hdmi, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE |
|
|
HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE,
|
|
HDMI_VP_STUFF_PP_STUFFING_MASK |
|
|
HDMI_VP_STUFF_YCC422_STUFFING_MASK, HDMI_VP_STUFF);
|
|
|
|
hdmi_modb(hdmi, output_select, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK,
|
|
HDMI_VP_CONF);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Synopsys PHY Handling
|
|
*/
|
|
|
|
static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi,
|
|
unsigned char bit)
|
|
{
|
|
hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLR_OFFSET,
|
|
HDMI_PHY_TST0_TSTCLR_MASK, HDMI_PHY_TST0);
|
|
}
|
|
|
|
static bool hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, int msec)
|
|
{
|
|
u32 val;
|
|
|
|
while ((val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) {
|
|
if (msec-- == 0)
|
|
return false;
|
|
udelay(1000);
|
|
}
|
|
hdmi_writeb(hdmi, val, HDMI_IH_I2CMPHY_STAT0);
|
|
|
|
return true;
|
|
}
|
|
|
|
void dw_hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data,
|
|
unsigned char addr)
|
|
{
|
|
hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0);
|
|
hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR);
|
|
hdmi_writeb(hdmi, (unsigned char)(data >> 8),
|
|
HDMI_PHY_I2CM_DATAO_1_ADDR);
|
|
hdmi_writeb(hdmi, (unsigned char)(data >> 0),
|
|
HDMI_PHY_I2CM_DATAO_0_ADDR);
|
|
hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE,
|
|
HDMI_PHY_I2CM_OPERATION_ADDR);
|
|
hdmi_phy_wait_i2c_done(hdmi, 1000);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_write);
|
|
|
|
/* Filter out invalid setups to avoid configuring SCDC and scrambling */
|
|
static bool dw_hdmi_support_scdc(struct dw_hdmi *hdmi,
|
|
const struct drm_display_info *display)
|
|
{
|
|
/* Completely disable SCDC support for older controllers */
|
|
if (hdmi->version < 0x200a)
|
|
return false;
|
|
|
|
/* Disable if no DDC bus */
|
|
if (!hdmi->ddc)
|
|
return false;
|
|
|
|
/* Disable if SCDC is not supported, or if an HF-VSDB block is absent */
|
|
if (!display->hdmi.scdc.supported ||
|
|
!display->hdmi.scdc.scrambling.supported)
|
|
return false;
|
|
|
|
/*
|
|
* Disable if display only support low TMDS rates and scrambling
|
|
* for low rates is not supported either
|
|
*/
|
|
if (!display->hdmi.scdc.scrambling.low_rates &&
|
|
display->max_tmds_clock <= 340000)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* HDMI2.0 Specifies the following procedure for High TMDS Bit Rates:
|
|
* - The Source shall suspend transmission of the TMDS clock and data
|
|
* - The Source shall write to the TMDS_Bit_Clock_Ratio bit to change it
|
|
* from a 0 to a 1 or from a 1 to a 0
|
|
* - The Source shall allow a minimum of 1 ms and a maximum of 100 ms from
|
|
* the time the TMDS_Bit_Clock_Ratio bit is written until resuming
|
|
* transmission of TMDS clock and data
|
|
*
|
|
* To respect the 100ms maximum delay, the dw_hdmi_set_high_tmds_clock_ratio()
|
|
* helper should called right before enabling the TMDS Clock and Data in
|
|
* the PHY configuration callback.
|
|
*/
|
|
void dw_hdmi_set_high_tmds_clock_ratio(struct dw_hdmi *hdmi,
|
|
const struct drm_display_info *display)
|
|
{
|
|
unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock;
|
|
|
|
/* Control for TMDS Bit Period/TMDS Clock-Period Ratio */
|
|
if (dw_hdmi_support_scdc(hdmi, display)) {
|
|
if (mtmdsclock > HDMI14_MAX_TMDSCLK)
|
|
drm_scdc_set_high_tmds_clock_ratio(hdmi->ddc, 1);
|
|
else
|
|
drm_scdc_set_high_tmds_clock_ratio(hdmi->ddc, 0);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_set_high_tmds_clock_ratio);
|
|
|
|
static void dw_hdmi_phy_enable_powerdown(struct dw_hdmi *hdmi, bool enable)
|
|
{
|
|
hdmi_mask_writeb(hdmi, !enable, HDMI_PHY_CONF0,
|
|
HDMI_PHY_CONF0_PDZ_OFFSET,
|
|
HDMI_PHY_CONF0_PDZ_MASK);
|
|
}
|
|
|
|
static void dw_hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, u8 enable)
|
|
{
|
|
hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
|
|
HDMI_PHY_CONF0_ENTMDS_OFFSET,
|
|
HDMI_PHY_CONF0_ENTMDS_MASK);
|
|
}
|
|
|
|
static void dw_hdmi_phy_enable_svsret(struct dw_hdmi *hdmi, u8 enable)
|
|
{
|
|
hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
|
|
HDMI_PHY_CONF0_SVSRET_OFFSET,
|
|
HDMI_PHY_CONF0_SVSRET_MASK);
|
|
}
|
|
|
|
void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable)
|
|
{
|
|
hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
|
|
HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET,
|
|
HDMI_PHY_CONF0_GEN2_PDDQ_MASK);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_pddq);
|
|
|
|
void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable)
|
|
{
|
|
hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
|
|
HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET,
|
|
HDMI_PHY_CONF0_GEN2_TXPWRON_MASK);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_txpwron);
|
|
|
|
static void dw_hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, u8 enable)
|
|
{
|
|
hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
|
|
HDMI_PHY_CONF0_SELDATAENPOL_OFFSET,
|
|
HDMI_PHY_CONF0_SELDATAENPOL_MASK);
|
|
}
|
|
|
|
static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, u8 enable)
|
|
{
|
|
hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
|
|
HDMI_PHY_CONF0_SELDIPIF_OFFSET,
|
|
HDMI_PHY_CONF0_SELDIPIF_MASK);
|
|
}
|
|
|
|
void dw_hdmi_phy_reset(struct dw_hdmi *hdmi)
|
|
{
|
|
/* PHY reset. The reset signal is active high on Gen2 PHYs. */
|
|
hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ);
|
|
hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_reset);
|
|
|
|
void dw_hdmi_phy_i2c_set_addr(struct dw_hdmi *hdmi, u8 address)
|
|
{
|
|
hdmi_phy_test_clear(hdmi, 1);
|
|
hdmi_writeb(hdmi, address, HDMI_PHY_I2CM_SLAVE_ADDR);
|
|
hdmi_phy_test_clear(hdmi, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_set_addr);
|
|
|
|
static void dw_hdmi_phy_power_off(struct dw_hdmi *hdmi)
|
|
{
|
|
const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
|
|
unsigned int i;
|
|
u16 val;
|
|
|
|
if (phy->gen == 1) {
|
|
dw_hdmi_phy_enable_tmds(hdmi, 0);
|
|
dw_hdmi_phy_enable_powerdown(hdmi, true);
|
|
return;
|
|
}
|
|
|
|
dw_hdmi_phy_gen2_txpwron(hdmi, 0);
|
|
|
|
/*
|
|
* Wait for TX_PHY_LOCK to be deasserted to indicate that the PHY went
|
|
* to low power mode.
|
|
*/
|
|
for (i = 0; i < 5; ++i) {
|
|
val = hdmi_readb(hdmi, HDMI_PHY_STAT0);
|
|
if (!(val & HDMI_PHY_TX_PHY_LOCK))
|
|
break;
|
|
|
|
usleep_range(1000, 2000);
|
|
}
|
|
|
|
if (val & HDMI_PHY_TX_PHY_LOCK)
|
|
dev_warn(hdmi->dev, "PHY failed to power down\n");
|
|
else
|
|
dev_dbg(hdmi->dev, "PHY powered down in %u iterations\n", i);
|
|
|
|
dw_hdmi_phy_gen2_pddq(hdmi, 1);
|
|
}
|
|
|
|
static int dw_hdmi_phy_power_on(struct dw_hdmi *hdmi)
|
|
{
|
|
const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
|
|
unsigned int i;
|
|
u8 val;
|
|
|
|
if (phy->gen == 1) {
|
|
dw_hdmi_phy_enable_powerdown(hdmi, false);
|
|
|
|
/* Toggle TMDS enable. */
|
|
dw_hdmi_phy_enable_tmds(hdmi, 0);
|
|
dw_hdmi_phy_enable_tmds(hdmi, 1);
|
|
return 0;
|
|
}
|
|
|
|
dw_hdmi_phy_gen2_txpwron(hdmi, 1);
|
|
dw_hdmi_phy_gen2_pddq(hdmi, 0);
|
|
|
|
/* Wait for PHY PLL lock */
|
|
for (i = 0; i < 5; ++i) {
|
|
val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK;
|
|
if (val)
|
|
break;
|
|
|
|
usleep_range(1000, 2000);
|
|
}
|
|
|
|
if (!val) {
|
|
dev_err(hdmi->dev, "PHY PLL failed to lock\n");
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
dev_dbg(hdmi->dev, "PHY PLL locked %u iterations\n", i);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* PHY configuration function for the DWC HDMI 3D TX PHY. Based on the available
|
|
* information the DWC MHL PHY has the same register layout and is thus also
|
|
* supported by this function.
|
|
*/
|
|
static int hdmi_phy_configure_dwc_hdmi_3d_tx(struct dw_hdmi *hdmi,
|
|
const struct dw_hdmi_plat_data *pdata,
|
|
unsigned long mpixelclock)
|
|
{
|
|
const struct dw_hdmi_mpll_config *mpll_config = pdata->mpll_cfg;
|
|
const struct dw_hdmi_curr_ctrl *curr_ctrl = pdata->cur_ctr;
|
|
const struct dw_hdmi_phy_config *phy_config = pdata->phy_config;
|
|
|
|
/* TOFIX Will need 420 specific PHY configuration tables */
|
|
|
|
/* PLL/MPLL Cfg - always match on final entry */
|
|
for (; mpll_config->mpixelclock != ~0UL; mpll_config++)
|
|
if (mpixelclock <= mpll_config->mpixelclock)
|
|
break;
|
|
|
|
for (; curr_ctrl->mpixelclock != ~0UL; curr_ctrl++)
|
|
if (mpixelclock <= curr_ctrl->mpixelclock)
|
|
break;
|
|
|
|
for (; phy_config->mpixelclock != ~0UL; phy_config++)
|
|
if (mpixelclock <= phy_config->mpixelclock)
|
|
break;
|
|
|
|
if (mpll_config->mpixelclock == ~0UL ||
|
|
curr_ctrl->mpixelclock == ~0UL ||
|
|
phy_config->mpixelclock == ~0UL)
|
|
return -EINVAL;
|
|
|
|
dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].cpce,
|
|
HDMI_3D_TX_PHY_CPCE_CTRL);
|
|
dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].gmp,
|
|
HDMI_3D_TX_PHY_GMPCTRL);
|
|
dw_hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[0],
|
|
HDMI_3D_TX_PHY_CURRCTRL);
|
|
|
|
dw_hdmi_phy_i2c_write(hdmi, 0, HDMI_3D_TX_PHY_PLLPHBYCTRL);
|
|
dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_MSM_CTRL_CKO_SEL_FB_CLK,
|
|
HDMI_3D_TX_PHY_MSM_CTRL);
|
|
|
|
dw_hdmi_phy_i2c_write(hdmi, phy_config->term, HDMI_3D_TX_PHY_TXTERM);
|
|
dw_hdmi_phy_i2c_write(hdmi, phy_config->sym_ctr,
|
|
HDMI_3D_TX_PHY_CKSYMTXCTRL);
|
|
dw_hdmi_phy_i2c_write(hdmi, phy_config->vlev_ctr,
|
|
HDMI_3D_TX_PHY_VLEVCTRL);
|
|
|
|
/* Override and disable clock termination. */
|
|
dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_CKCALCTRL_OVERRIDE,
|
|
HDMI_3D_TX_PHY_CKCALCTRL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hdmi_phy_configure(struct dw_hdmi *hdmi,
|
|
const struct drm_display_info *display)
|
|
{
|
|
const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
|
|
const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
|
|
unsigned long mpixelclock = hdmi->hdmi_data.video_mode.mpixelclock;
|
|
unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock;
|
|
int ret;
|
|
|
|
dw_hdmi_phy_power_off(hdmi);
|
|
|
|
dw_hdmi_set_high_tmds_clock_ratio(hdmi, display);
|
|
|
|
/* Leave low power consumption mode by asserting SVSRET. */
|
|
if (phy->has_svsret)
|
|
dw_hdmi_phy_enable_svsret(hdmi, 1);
|
|
|
|
dw_hdmi_phy_reset(hdmi);
|
|
|
|
hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST);
|
|
|
|
dw_hdmi_phy_i2c_set_addr(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2);
|
|
|
|
/* Write to the PHY as configured by the platform */
|
|
if (pdata->configure_phy)
|
|
ret = pdata->configure_phy(hdmi, pdata->priv_data, mpixelclock);
|
|
else
|
|
ret = phy->configure(hdmi, pdata, mpixelclock);
|
|
if (ret) {
|
|
dev_err(hdmi->dev, "PHY configuration failed (clock %lu)\n",
|
|
mpixelclock);
|
|
return ret;
|
|
}
|
|
|
|
/* Wait for resuming transmission of TMDS clock and data */
|
|
if (mtmdsclock > HDMI14_MAX_TMDSCLK)
|
|
msleep(100);
|
|
|
|
return dw_hdmi_phy_power_on(hdmi);
|
|
}
|
|
|
|
static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
|
|
const struct drm_display_info *display,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
int i, ret;
|
|
|
|
/* HDMI Phy spec says to do the phy initialization sequence twice */
|
|
for (i = 0; i < 2; i++) {
|
|
dw_hdmi_phy_sel_data_en_pol(hdmi, 1);
|
|
dw_hdmi_phy_sel_interface_control(hdmi, 0);
|
|
|
|
ret = hdmi_phy_configure(hdmi, display);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi, void *data)
|
|
{
|
|
dw_hdmi_phy_power_off(hdmi);
|
|
}
|
|
|
|
enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi,
|
|
void *data)
|
|
{
|
|
return hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD ?
|
|
connector_status_connected : connector_status_disconnected;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_read_hpd);
|
|
|
|
void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data,
|
|
bool force, bool disabled, bool rxsense)
|
|
{
|
|
u8 old_mask = hdmi->phy_mask;
|
|
|
|
if (force || disabled || !rxsense)
|
|
hdmi->phy_mask |= HDMI_PHY_RX_SENSE;
|
|
else
|
|
hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE;
|
|
|
|
if (old_mask != hdmi->phy_mask)
|
|
hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_update_hpd);
|
|
|
|
void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data)
|
|
{
|
|
/*
|
|
* Configure the PHY RX SENSE and HPD interrupts polarities and clear
|
|
* any pending interrupt.
|
|
*/
|
|
hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0);
|
|
hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
|
|
HDMI_IH_PHY_STAT0);
|
|
|
|
/* Enable cable hot plug irq. */
|
|
hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
|
|
|
|
/* Clear and unmute interrupts. */
|
|
hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
|
|
HDMI_IH_PHY_STAT0);
|
|
hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
|
|
HDMI_IH_MUTE_PHY_STAT0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_phy_setup_hpd);
|
|
|
|
static const struct dw_hdmi_phy_ops dw_hdmi_synopsys_phy_ops = {
|
|
.init = dw_hdmi_phy_init,
|
|
.disable = dw_hdmi_phy_disable,
|
|
.read_hpd = dw_hdmi_phy_read_hpd,
|
|
.update_hpd = dw_hdmi_phy_update_hpd,
|
|
.setup_hpd = dw_hdmi_phy_setup_hpd,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* HDMI TX Setup
|
|
*/
|
|
|
|
static void hdmi_tx_hdcp_config(struct dw_hdmi *hdmi)
|
|
{
|
|
u8 de;
|
|
|
|
if (hdmi->hdmi_data.video_mode.mdataenablepolarity)
|
|
de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH;
|
|
else
|
|
de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW;
|
|
|
|
/* disable rx detect */
|
|
hdmi_modb(hdmi, HDMI_A_HDCPCFG0_RXDETECT_DISABLE,
|
|
HDMI_A_HDCPCFG0_RXDETECT_MASK, HDMI_A_HDCPCFG0);
|
|
|
|
hdmi_modb(hdmi, de, HDMI_A_VIDPOLCFG_DATAENPOL_MASK, HDMI_A_VIDPOLCFG);
|
|
|
|
hdmi_modb(hdmi, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE,
|
|
HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1);
|
|
}
|
|
|
|
static void hdmi_config_AVI(struct dw_hdmi *hdmi,
|
|
const struct drm_connector *connector,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
struct hdmi_avi_infoframe frame;
|
|
u8 val;
|
|
|
|
/* Initialise info frame from DRM mode */
|
|
drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode);
|
|
|
|
if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
|
|
drm_hdmi_avi_infoframe_quant_range(&frame, connector, mode,
|
|
hdmi->hdmi_data.rgb_limited_range ?
|
|
HDMI_QUANTIZATION_RANGE_LIMITED :
|
|
HDMI_QUANTIZATION_RANGE_FULL);
|
|
} else {
|
|
frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
|
|
frame.ycc_quantization_range =
|
|
HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
|
|
}
|
|
|
|
if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
|
|
frame.colorspace = HDMI_COLORSPACE_YUV444;
|
|
else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
|
|
frame.colorspace = HDMI_COLORSPACE_YUV422;
|
|
else if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format))
|
|
frame.colorspace = HDMI_COLORSPACE_YUV420;
|
|
else
|
|
frame.colorspace = HDMI_COLORSPACE_RGB;
|
|
|
|
/* Set up colorimetry */
|
|
if (!hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
|
|
switch (hdmi->hdmi_data.enc_out_encoding) {
|
|
case V4L2_YCBCR_ENC_601:
|
|
if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV601)
|
|
frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
|
|
else
|
|
frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
|
|
frame.extended_colorimetry =
|
|
HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
|
|
break;
|
|
case V4L2_YCBCR_ENC_709:
|
|
if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV709)
|
|
frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
|
|
else
|
|
frame.colorimetry = HDMI_COLORIMETRY_ITU_709;
|
|
frame.extended_colorimetry =
|
|
HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
|
|
break;
|
|
default: /* Carries no data */
|
|
frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
|
|
frame.extended_colorimetry =
|
|
HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
|
|
break;
|
|
}
|
|
} else {
|
|
frame.colorimetry = HDMI_COLORIMETRY_NONE;
|
|
frame.extended_colorimetry =
|
|
HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
|
|
}
|
|
|
|
/*
|
|
* The Designware IP uses a different byte format from standard
|
|
* AVI info frames, though generally the bits are in the correct
|
|
* bytes.
|
|
*/
|
|
|
|
/*
|
|
* AVI data byte 1 differences: Colorspace in bits 0,1 rather than 5,6,
|
|
* scan info in bits 4,5 rather than 0,1 and active aspect present in
|
|
* bit 6 rather than 4.
|
|
*/
|
|
val = (frame.scan_mode & 3) << 4 | (frame.colorspace & 3);
|
|
if (frame.active_aspect & 15)
|
|
val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT;
|
|
if (frame.top_bar || frame.bottom_bar)
|
|
val |= HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR;
|
|
if (frame.left_bar || frame.right_bar)
|
|
val |= HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR;
|
|
hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0);
|
|
|
|
/* AVI data byte 2 differences: none */
|
|
val = ((frame.colorimetry & 0x3) << 6) |
|
|
((frame.picture_aspect & 0x3) << 4) |
|
|
(frame.active_aspect & 0xf);
|
|
hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1);
|
|
|
|
/* AVI data byte 3 differences: none */
|
|
val = ((frame.extended_colorimetry & 0x7) << 4) |
|
|
((frame.quantization_range & 0x3) << 2) |
|
|
(frame.nups & 0x3);
|
|
if (frame.itc)
|
|
val |= HDMI_FC_AVICONF2_IT_CONTENT_VALID;
|
|
hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2);
|
|
|
|
/* AVI data byte 4 differences: none */
|
|
val = frame.video_code & 0x7f;
|
|
hdmi_writeb(hdmi, val, HDMI_FC_AVIVID);
|
|
|
|
/* AVI Data Byte 5- set up input and output pixel repetition */
|
|
val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) <<
|
|
HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) &
|
|
HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) |
|
|
((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput <<
|
|
HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) &
|
|
HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK);
|
|
hdmi_writeb(hdmi, val, HDMI_FC_PRCONF);
|
|
|
|
/*
|
|
* AVI data byte 5 differences: content type in 0,1 rather than 4,5,
|
|
* ycc range in bits 2,3 rather than 6,7
|
|
*/
|
|
val = ((frame.ycc_quantization_range & 0x3) << 2) |
|
|
(frame.content_type & 0x3);
|
|
hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3);
|
|
|
|
/* AVI Data Bytes 6-13 */
|
|
hdmi_writeb(hdmi, frame.top_bar & 0xff, HDMI_FC_AVIETB0);
|
|
hdmi_writeb(hdmi, (frame.top_bar >> 8) & 0xff, HDMI_FC_AVIETB1);
|
|
hdmi_writeb(hdmi, frame.bottom_bar & 0xff, HDMI_FC_AVISBB0);
|
|
hdmi_writeb(hdmi, (frame.bottom_bar >> 8) & 0xff, HDMI_FC_AVISBB1);
|
|
hdmi_writeb(hdmi, frame.left_bar & 0xff, HDMI_FC_AVIELB0);
|
|
hdmi_writeb(hdmi, (frame.left_bar >> 8) & 0xff, HDMI_FC_AVIELB1);
|
|
hdmi_writeb(hdmi, frame.right_bar & 0xff, HDMI_FC_AVISRB0);
|
|
hdmi_writeb(hdmi, (frame.right_bar >> 8) & 0xff, HDMI_FC_AVISRB1);
|
|
}
|
|
|
|
static void hdmi_config_vendor_specific_infoframe(struct dw_hdmi *hdmi,
|
|
const struct drm_connector *connector,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
struct hdmi_vendor_infoframe frame;
|
|
u8 buffer[10];
|
|
ssize_t err;
|
|
|
|
err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, connector,
|
|
mode);
|
|
if (err < 0)
|
|
/*
|
|
* Going into that statement does not means vendor infoframe
|
|
* fails. It just informed us that vendor infoframe is not
|
|
* needed for the selected mode. Only 4k or stereoscopic 3D
|
|
* mode requires vendor infoframe. So just simply return.
|
|
*/
|
|
return;
|
|
|
|
err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
|
|
if (err < 0) {
|
|
dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
|
|
err);
|
|
return;
|
|
}
|
|
hdmi_mask_writeb(hdmi, 0, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET,
|
|
HDMI_FC_DATAUTO0_VSD_MASK);
|
|
|
|
/* Set the length of HDMI vendor specific InfoFrame payload */
|
|
hdmi_writeb(hdmi, buffer[2], HDMI_FC_VSDSIZE);
|
|
|
|
/* Set 24bit IEEE Registration Identifier */
|
|
hdmi_writeb(hdmi, buffer[4], HDMI_FC_VSDIEEEID0);
|
|
hdmi_writeb(hdmi, buffer[5], HDMI_FC_VSDIEEEID1);
|
|
hdmi_writeb(hdmi, buffer[6], HDMI_FC_VSDIEEEID2);
|
|
|
|
/* Set HDMI_Video_Format and HDMI_VIC/3D_Structure */
|
|
hdmi_writeb(hdmi, buffer[7], HDMI_FC_VSDPAYLOAD0);
|
|
hdmi_writeb(hdmi, buffer[8], HDMI_FC_VSDPAYLOAD1);
|
|
|
|
if (frame.s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
|
|
hdmi_writeb(hdmi, buffer[9], HDMI_FC_VSDPAYLOAD2);
|
|
|
|
/* Packet frame interpolation */
|
|
hdmi_writeb(hdmi, 1, HDMI_FC_DATAUTO1);
|
|
|
|
/* Auto packets per frame and line spacing */
|
|
hdmi_writeb(hdmi, 0x11, HDMI_FC_DATAUTO2);
|
|
|
|
/* Configures the Frame Composer On RDRB mode */
|
|
hdmi_mask_writeb(hdmi, 1, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET,
|
|
HDMI_FC_DATAUTO0_VSD_MASK);
|
|
}
|
|
|
|
static void hdmi_config_drm_infoframe(struct dw_hdmi *hdmi,
|
|
const struct drm_connector *connector)
|
|
{
|
|
const struct drm_connector_state *conn_state = connector->state;
|
|
struct hdmi_drm_infoframe frame;
|
|
u8 buffer[30];
|
|
ssize_t err;
|
|
int i;
|
|
|
|
if (!hdmi->plat_data->use_drm_infoframe)
|
|
return;
|
|
|
|
hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_DISABLE,
|
|
HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN);
|
|
|
|
err = drm_hdmi_infoframe_set_hdr_metadata(&frame, conn_state);
|
|
if (err < 0)
|
|
return;
|
|
|
|
err = hdmi_drm_infoframe_pack(&frame, buffer, sizeof(buffer));
|
|
if (err < 0) {
|
|
dev_err(hdmi->dev, "Failed to pack drm infoframe: %zd\n", err);
|
|
return;
|
|
}
|
|
|
|
hdmi_writeb(hdmi, frame.version, HDMI_FC_DRM_HB0);
|
|
hdmi_writeb(hdmi, frame.length, HDMI_FC_DRM_HB1);
|
|
|
|
for (i = 0; i < frame.length; i++)
|
|
hdmi_writeb(hdmi, buffer[4 + i], HDMI_FC_DRM_PB0 + i);
|
|
|
|
hdmi_writeb(hdmi, 1, HDMI_FC_DRM_UP);
|
|
hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_ENABLE,
|
|
HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN);
|
|
}
|
|
|
|
static void hdmi_av_composer(struct dw_hdmi *hdmi,
|
|
const struct drm_display_info *display,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
u8 inv_val, bytes;
|
|
const struct drm_hdmi_info *hdmi_info = &display->hdmi;
|
|
struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode;
|
|
int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len;
|
|
unsigned int vdisplay, hdisplay;
|
|
|
|
vmode->mpixelclock = mode->clock * 1000;
|
|
|
|
dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock);
|
|
|
|
vmode->mtmdsclock = vmode->mpixelclock;
|
|
|
|
if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) {
|
|
switch (hdmi_bus_fmt_color_depth(
|
|
hdmi->hdmi_data.enc_out_bus_format)) {
|
|
case 16:
|
|
vmode->mtmdsclock = vmode->mpixelclock * 2;
|
|
break;
|
|
case 12:
|
|
vmode->mtmdsclock = vmode->mpixelclock * 3 / 2;
|
|
break;
|
|
case 10:
|
|
vmode->mtmdsclock = vmode->mpixelclock * 5 / 4;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format))
|
|
vmode->mtmdsclock /= 2;
|
|
|
|
dev_dbg(hdmi->dev, "final tmdsclock = %d\n", vmode->mtmdsclock);
|
|
|
|
/* Set up HDMI_FC_INVIDCONF */
|
|
inv_val = (hdmi->hdmi_data.hdcp_enable ||
|
|
(dw_hdmi_support_scdc(hdmi, display) &&
|
|
(vmode->mtmdsclock > HDMI14_MAX_TMDSCLK ||
|
|
hdmi_info->scdc.scrambling.low_rates)) ?
|
|
HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE :
|
|
HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE);
|
|
|
|
inv_val |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
|
|
HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH :
|
|
HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW;
|
|
|
|
inv_val |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
|
|
HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH :
|
|
HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW;
|
|
|
|
inv_val |= (vmode->mdataenablepolarity ?
|
|
HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH :
|
|
HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW);
|
|
|
|
if (hdmi->vic == 39)
|
|
inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH;
|
|
else
|
|
inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
|
|
HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH :
|
|
HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW;
|
|
|
|
inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
|
|
HDMI_FC_INVIDCONF_IN_I_P_INTERLACED :
|
|
HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;
|
|
|
|
inv_val |= hdmi->sink_is_hdmi ?
|
|
HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
|
|
HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE;
|
|
|
|
hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF);
|
|
|
|
hdisplay = mode->hdisplay;
|
|
hblank = mode->htotal - mode->hdisplay;
|
|
h_de_hs = mode->hsync_start - mode->hdisplay;
|
|
hsync_len = mode->hsync_end - mode->hsync_start;
|
|
|
|
/*
|
|
* When we're setting a YCbCr420 mode, we need
|
|
* to adjust the horizontal timing to suit.
|
|
*/
|
|
if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) {
|
|
hdisplay /= 2;
|
|
hblank /= 2;
|
|
h_de_hs /= 2;
|
|
hsync_len /= 2;
|
|
}
|
|
|
|
vdisplay = mode->vdisplay;
|
|
vblank = mode->vtotal - mode->vdisplay;
|
|
v_de_vs = mode->vsync_start - mode->vdisplay;
|
|
vsync_len = mode->vsync_end - mode->vsync_start;
|
|
|
|
/*
|
|
* When we're setting an interlaced mode, we need
|
|
* to adjust the vertical timing to suit.
|
|
*/
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
|
|
vdisplay /= 2;
|
|
vblank /= 2;
|
|
v_de_vs /= 2;
|
|
vsync_len /= 2;
|
|
}
|
|
|
|
/* Scrambling Control */
|
|
if (dw_hdmi_support_scdc(hdmi, display)) {
|
|
if (vmode->mtmdsclock > HDMI14_MAX_TMDSCLK ||
|
|
hdmi_info->scdc.scrambling.low_rates) {
|
|
/*
|
|
* HDMI2.0 Specifies the following procedure:
|
|
* After the Source Device has determined that
|
|
* SCDC_Present is set (=1), the Source Device should
|
|
* write the accurate Version of the Source Device
|
|
* to the Source Version field in the SCDCS.
|
|
* Source Devices compliant shall set the
|
|
* Source Version = 1.
|
|
*/
|
|
drm_scdc_readb(hdmi->ddc, SCDC_SINK_VERSION,
|
|
&bytes);
|
|
drm_scdc_writeb(hdmi->ddc, SCDC_SOURCE_VERSION,
|
|
min_t(u8, bytes, SCDC_MIN_SOURCE_VERSION));
|
|
|
|
/* Enabled Scrambling in the Sink */
|
|
drm_scdc_set_scrambling(hdmi->ddc, 1);
|
|
|
|
/*
|
|
* To activate the scrambler feature, you must ensure
|
|
* that the quasi-static configuration bit
|
|
* fc_invidconf.HDCP_keepout is set at configuration
|
|
* time, before the required mc_swrstzreq.tmdsswrst_req
|
|
* reset request is issued.
|
|
*/
|
|
hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ,
|
|
HDMI_MC_SWRSTZ);
|
|
hdmi_writeb(hdmi, 1, HDMI_FC_SCRAMBLER_CTRL);
|
|
} else {
|
|
hdmi_writeb(hdmi, 0, HDMI_FC_SCRAMBLER_CTRL);
|
|
hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ,
|
|
HDMI_MC_SWRSTZ);
|
|
drm_scdc_set_scrambling(hdmi->ddc, 0);
|
|
}
|
|
}
|
|
|
|
/* Set up horizontal active pixel width */
|
|
hdmi_writeb(hdmi, hdisplay >> 8, HDMI_FC_INHACTV1);
|
|
hdmi_writeb(hdmi, hdisplay, HDMI_FC_INHACTV0);
|
|
|
|
/* Set up vertical active lines */
|
|
hdmi_writeb(hdmi, vdisplay >> 8, HDMI_FC_INVACTV1);
|
|
hdmi_writeb(hdmi, vdisplay, HDMI_FC_INVACTV0);
|
|
|
|
/* Set up horizontal blanking pixel region width */
|
|
hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1);
|
|
hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0);
|
|
|
|
/* Set up vertical blanking pixel region width */
|
|
hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK);
|
|
|
|
/* Set up HSYNC active edge delay width (in pixel clks) */
|
|
hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1);
|
|
hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0);
|
|
|
|
/* Set up VSYNC active edge delay (in lines) */
|
|
hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY);
|
|
|
|
/* Set up HSYNC active pulse width (in pixel clks) */
|
|
hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1);
|
|
hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0);
|
|
|
|
/* Set up VSYNC active edge delay (in lines) */
|
|
hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH);
|
|
}
|
|
|
|
/* HDMI Initialization Step B.4 */
|
|
static void dw_hdmi_enable_video_path(struct dw_hdmi *hdmi)
|
|
{
|
|
/* control period minimum duration */
|
|
hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR);
|
|
hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR);
|
|
hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC);
|
|
|
|
/* Set to fill TMDS data channels */
|
|
hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM);
|
|
hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM);
|
|
hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM);
|
|
|
|
/* Enable pixel clock and tmds data path */
|
|
hdmi->mc_clkdis |= HDMI_MC_CLKDIS_HDCPCLK_DISABLE |
|
|
HDMI_MC_CLKDIS_CSCCLK_DISABLE |
|
|
HDMI_MC_CLKDIS_AUDCLK_DISABLE |
|
|
HDMI_MC_CLKDIS_PREPCLK_DISABLE |
|
|
HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
|
|
hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
|
|
hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
|
|
|
|
hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
|
|
hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
|
|
|
|
/* Enable csc path */
|
|
if (is_csc_needed(hdmi)) {
|
|
hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE;
|
|
hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
|
|
|
|
hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH,
|
|
HDMI_MC_FLOWCTRL);
|
|
} else {
|
|
hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CSCCLK_DISABLE;
|
|
hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
|
|
|
|
hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS,
|
|
HDMI_MC_FLOWCTRL);
|
|
}
|
|
}
|
|
|
|
/* Workaround to clear the overflow condition */
|
|
static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
|
|
{
|
|
unsigned int count;
|
|
unsigned int i;
|
|
u8 val;
|
|
|
|
/*
|
|
* Under some circumstances the Frame Composer arithmetic unit can miss
|
|
* an FC register write due to being busy processing the previous one.
|
|
* The issue can be worked around by issuing a TMDS software reset and
|
|
* then write one of the FC registers several times.
|
|
*
|
|
* The number of iterations matters and depends on the HDMI TX revision
|
|
* (and possibly on the platform). So far i.MX6Q (v1.30a), i.MX6DL
|
|
* (v1.31a) and multiple Allwinner SoCs (v1.32a) have been identified
|
|
* as needing the workaround, with 4 iterations for v1.30a and 1
|
|
* iteration for others.
|
|
* The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
|
|
* the workaround with a single iteration.
|
|
* The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
|
|
* been identified as needing the workaround with a single iteration.
|
|
*/
|
|
|
|
switch (hdmi->version) {
|
|
case 0x130a:
|
|
count = 4;
|
|
break;
|
|
case 0x131a:
|
|
case 0x132a:
|
|
case 0x200a:
|
|
case 0x201a:
|
|
case 0x211a:
|
|
case 0x212a:
|
|
count = 1;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* TMDS software reset */
|
|
hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ);
|
|
|
|
val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF);
|
|
for (i = 0; i < count; i++)
|
|
hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF);
|
|
}
|
|
|
|
static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi)
|
|
{
|
|
hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK,
|
|
HDMI_IH_MUTE_FC_STAT2);
|
|
}
|
|
|
|
static int dw_hdmi_setup(struct dw_hdmi *hdmi,
|
|
const struct drm_connector *connector,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
int ret;
|
|
|
|
hdmi_disable_overflow_interrupts(hdmi);
|
|
|
|
hdmi->vic = drm_match_cea_mode(mode);
|
|
|
|
if (!hdmi->vic) {
|
|
dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n");
|
|
} else {
|
|
dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic);
|
|
}
|
|
|
|
if ((hdmi->vic == 6) || (hdmi->vic == 7) ||
|
|
(hdmi->vic == 21) || (hdmi->vic == 22) ||
|
|
(hdmi->vic == 2) || (hdmi->vic == 3) ||
|
|
(hdmi->vic == 17) || (hdmi->vic == 18))
|
|
hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_601;
|
|
else
|
|
hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_709;
|
|
|
|
hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0;
|
|
hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0;
|
|
|
|
if (hdmi->hdmi_data.enc_in_bus_format == MEDIA_BUS_FMT_FIXED)
|
|
hdmi->hdmi_data.enc_in_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
|
|
|
|
/* TOFIX: Get input encoding from plat data or fallback to none */
|
|
if (hdmi->plat_data->input_bus_encoding)
|
|
hdmi->hdmi_data.enc_in_encoding =
|
|
hdmi->plat_data->input_bus_encoding;
|
|
else
|
|
hdmi->hdmi_data.enc_in_encoding = V4L2_YCBCR_ENC_DEFAULT;
|
|
|
|
if (hdmi->hdmi_data.enc_out_bus_format == MEDIA_BUS_FMT_FIXED)
|
|
hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
|
|
|
|
hdmi->hdmi_data.rgb_limited_range = hdmi->sink_is_hdmi &&
|
|
drm_default_rgb_quant_range(mode) ==
|
|
HDMI_QUANTIZATION_RANGE_LIMITED;
|
|
|
|
hdmi->hdmi_data.pix_repet_factor = 0;
|
|
hdmi->hdmi_data.hdcp_enable = 0;
|
|
hdmi->hdmi_data.video_mode.mdataenablepolarity = true;
|
|
|
|
/* HDMI Initialization Step B.1 */
|
|
hdmi_av_composer(hdmi, &connector->display_info, mode);
|
|
|
|
/* HDMI Initializateion Step B.2 */
|
|
ret = hdmi->phy.ops->init(hdmi, hdmi->phy.data,
|
|
&connector->display_info,
|
|
&hdmi->previous_mode);
|
|
if (ret)
|
|
return ret;
|
|
hdmi->phy.enabled = true;
|
|
|
|
/* HDMI Initialization Step B.3 */
|
|
dw_hdmi_enable_video_path(hdmi);
|
|
|
|
if (hdmi->sink_has_audio) {
|
|
dev_dbg(hdmi->dev, "sink has audio support\n");
|
|
|
|
/* HDMI Initialization Step E - Configure audio */
|
|
hdmi_clk_regenerator_update_pixel_clock(hdmi);
|
|
hdmi_enable_audio_clk(hdmi, hdmi->audio_enable);
|
|
}
|
|
|
|
/* not for DVI mode */
|
|
if (hdmi->sink_is_hdmi) {
|
|
dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__);
|
|
|
|
/* HDMI Initialization Step F - Configure AVI InfoFrame */
|
|
hdmi_config_AVI(hdmi, connector, mode);
|
|
hdmi_config_vendor_specific_infoframe(hdmi, connector, mode);
|
|
hdmi_config_drm_infoframe(hdmi, connector);
|
|
} else {
|
|
dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
|
|
}
|
|
|
|
hdmi_video_packetize(hdmi);
|
|
hdmi_video_csc(hdmi);
|
|
hdmi_video_sample(hdmi);
|
|
hdmi_tx_hdcp_config(hdmi);
|
|
|
|
dw_hdmi_clear_overflow(hdmi);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi)
|
|
{
|
|
u8 ih_mute;
|
|
|
|
/*
|
|
* Boot up defaults are:
|
|
* HDMI_IH_MUTE = 0x03 (disabled)
|
|
* HDMI_IH_MUTE_* = 0x00 (enabled)
|
|
*
|
|
* Disable top level interrupt bits in HDMI block
|
|
*/
|
|
ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) |
|
|
HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
|
|
HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;
|
|
|
|
hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
|
|
|
|
/* by default mask all interrupts */
|
|
hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT);
|
|
|
|
/* Disable interrupts in the IH_MUTE_* registers */
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0);
|
|
hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0);
|
|
|
|
/* Enable top level interrupt bits in HDMI block */
|
|
ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
|
|
HDMI_IH_MUTE_MUTE_ALL_INTERRUPT);
|
|
hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
|
|
}
|
|
|
|
static void dw_hdmi_poweron(struct dw_hdmi *hdmi)
|
|
{
|
|
hdmi->bridge_is_on = true;
|
|
|
|
/*
|
|
* The curr_conn field is guaranteed to be valid here, as this function
|
|
* is only be called when !hdmi->disabled.
|
|
*/
|
|
dw_hdmi_setup(hdmi, hdmi->curr_conn, &hdmi->previous_mode);
|
|
}
|
|
|
|
static void dw_hdmi_poweroff(struct dw_hdmi *hdmi)
|
|
{
|
|
if (hdmi->phy.enabled) {
|
|
hdmi->phy.ops->disable(hdmi, hdmi->phy.data);
|
|
hdmi->phy.enabled = false;
|
|
}
|
|
|
|
hdmi->bridge_is_on = false;
|
|
}
|
|
|
|
static void dw_hdmi_update_power(struct dw_hdmi *hdmi)
|
|
{
|
|
int force = hdmi->force;
|
|
|
|
if (hdmi->disabled) {
|
|
force = DRM_FORCE_OFF;
|
|
} else if (force == DRM_FORCE_UNSPECIFIED) {
|
|
if (hdmi->rxsense)
|
|
force = DRM_FORCE_ON;
|
|
else
|
|
force = DRM_FORCE_OFF;
|
|
}
|
|
|
|
if (force == DRM_FORCE_OFF) {
|
|
if (hdmi->bridge_is_on)
|
|
dw_hdmi_poweroff(hdmi);
|
|
} else {
|
|
if (!hdmi->bridge_is_on)
|
|
dw_hdmi_poweron(hdmi);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Adjust the detection of RXSENSE according to whether we have a forced
|
|
* connection mode enabled, or whether we have been disabled. There is
|
|
* no point processing RXSENSE interrupts if we have a forced connection
|
|
* state, or DRM has us disabled.
|
|
*
|
|
* We also disable rxsense interrupts when we think we're disconnected
|
|
* to avoid floating TDMS signals giving false rxsense interrupts.
|
|
*
|
|
* Note: we still need to listen for HPD interrupts even when DRM has us
|
|
* disabled so that we can detect a connect event.
|
|
*/
|
|
static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi)
|
|
{
|
|
if (hdmi->phy.ops->update_hpd)
|
|
hdmi->phy.ops->update_hpd(hdmi, hdmi->phy.data,
|
|
hdmi->force, hdmi->disabled,
|
|
hdmi->rxsense);
|
|
}
|
|
|
|
static enum drm_connector_status dw_hdmi_detect(struct dw_hdmi *hdmi)
|
|
{
|
|
enum drm_connector_status result;
|
|
|
|
result = hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data);
|
|
|
|
mutex_lock(&hdmi->mutex);
|
|
if (result != hdmi->last_connector_result) {
|
|
dev_dbg(hdmi->dev, "read_hpd result: %d", result);
|
|
handle_plugged_change(hdmi,
|
|
result == connector_status_connected);
|
|
hdmi->last_connector_result = result;
|
|
}
|
|
mutex_unlock(&hdmi->mutex);
|
|
|
|
return result;
|
|
}
|
|
|
|
static struct edid *dw_hdmi_get_edid(struct dw_hdmi *hdmi,
|
|
struct drm_connector *connector)
|
|
{
|
|
struct edid *edid;
|
|
|
|
if (!hdmi->ddc)
|
|
return NULL;
|
|
|
|
edid = drm_get_edid(connector, hdmi->ddc);
|
|
if (!edid) {
|
|
dev_dbg(hdmi->dev, "failed to get edid\n");
|
|
return NULL;
|
|
}
|
|
|
|
dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
|
|
edid->width_cm, edid->height_cm);
|
|
|
|
hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
|
|
hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
|
|
|
|
return edid;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* DRM Connector Operations
|
|
*/
|
|
|
|
static enum drm_connector_status
|
|
dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
|
|
{
|
|
struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
|
|
connector);
|
|
return dw_hdmi_detect(hdmi);
|
|
}
|
|
|
|
static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
|
|
connector);
|
|
struct edid *edid;
|
|
int ret;
|
|
|
|
edid = dw_hdmi_get_edid(hdmi, connector);
|
|
if (!edid)
|
|
return 0;
|
|
|
|
drm_connector_update_edid_property(connector, edid);
|
|
cec_notifier_set_phys_addr_from_edid(hdmi->cec_notifier, edid);
|
|
ret = drm_add_edid_modes(connector, edid);
|
|
kfree(edid);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dw_hdmi_connector_atomic_check(struct drm_connector *connector,
|
|
struct drm_atomic_state *state)
|
|
{
|
|
struct drm_connector_state *old_state =
|
|
drm_atomic_get_old_connector_state(state, connector);
|
|
struct drm_connector_state *new_state =
|
|
drm_atomic_get_new_connector_state(state, connector);
|
|
struct drm_crtc *crtc = new_state->crtc;
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
if (!crtc)
|
|
return 0;
|
|
|
|
if (!drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) {
|
|
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
if (IS_ERR(crtc_state))
|
|
return PTR_ERR(crtc_state);
|
|
|
|
crtc_state->mode_changed = true;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dw_hdmi_connector_force(struct drm_connector *connector)
|
|
{
|
|
struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
|
|
connector);
|
|
|
|
mutex_lock(&hdmi->mutex);
|
|
hdmi->force = connector->force;
|
|
dw_hdmi_update_power(hdmi);
|
|
dw_hdmi_update_phy_mask(hdmi);
|
|
mutex_unlock(&hdmi->mutex);
|
|
}
|
|
|
|
static const struct drm_connector_funcs dw_hdmi_connector_funcs = {
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.detect = dw_hdmi_connector_detect,
|
|
.destroy = drm_connector_cleanup,
|
|
.force = dw_hdmi_connector_force,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
|
|
.get_modes = dw_hdmi_connector_get_modes,
|
|
.atomic_check = dw_hdmi_connector_atomic_check,
|
|
};
|
|
|
|
static int dw_hdmi_connector_create(struct dw_hdmi *hdmi)
|
|
{
|
|
struct drm_connector *connector = &hdmi->connector;
|
|
struct cec_connector_info conn_info;
|
|
struct cec_notifier *notifier;
|
|
|
|
if (hdmi->version >= 0x200a)
|
|
connector->ycbcr_420_allowed =
|
|
hdmi->plat_data->ycbcr_420_allowed;
|
|
else
|
|
connector->ycbcr_420_allowed = false;
|
|
|
|
connector->interlace_allowed = 1;
|
|
connector->polled = DRM_CONNECTOR_POLL_HPD;
|
|
|
|
drm_connector_helper_add(connector, &dw_hdmi_connector_helper_funcs);
|
|
|
|
drm_connector_init_with_ddc(hdmi->bridge.dev, connector,
|
|
&dw_hdmi_connector_funcs,
|
|
DRM_MODE_CONNECTOR_HDMIA,
|
|
hdmi->ddc);
|
|
|
|
/*
|
|
* drm_connector_attach_max_bpc_property() requires the
|
|
* connector to have a state.
|
|
*/
|
|
drm_atomic_helper_connector_reset(connector);
|
|
|
|
drm_connector_attach_max_bpc_property(connector, 8, 16);
|
|
|
|
if (hdmi->version >= 0x200a && hdmi->plat_data->use_drm_infoframe)
|
|
drm_connector_attach_hdr_output_metadata_property(connector);
|
|
|
|
drm_connector_attach_encoder(connector, hdmi->bridge.encoder);
|
|
|
|
cec_fill_conn_info_from_drm(&conn_info, connector);
|
|
|
|
notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info);
|
|
if (!notifier)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&hdmi->cec_notifier_mutex);
|
|
hdmi->cec_notifier = notifier;
|
|
mutex_unlock(&hdmi->cec_notifier_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* DRM Bridge Operations
|
|
*/
|
|
|
|
/*
|
|
* Possible output formats :
|
|
* - MEDIA_BUS_FMT_UYYVYY16_0_5X48,
|
|
* - MEDIA_BUS_FMT_UYYVYY12_0_5X36,
|
|
* - MEDIA_BUS_FMT_UYYVYY10_0_5X30,
|
|
* - MEDIA_BUS_FMT_UYYVYY8_0_5X24,
|
|
* - MEDIA_BUS_FMT_YUV16_1X48,
|
|
* - MEDIA_BUS_FMT_RGB161616_1X48,
|
|
* - MEDIA_BUS_FMT_UYVY12_1X24,
|
|
* - MEDIA_BUS_FMT_YUV12_1X36,
|
|
* - MEDIA_BUS_FMT_RGB121212_1X36,
|
|
* - MEDIA_BUS_FMT_UYVY10_1X20,
|
|
* - MEDIA_BUS_FMT_YUV10_1X30,
|
|
* - MEDIA_BUS_FMT_RGB101010_1X30,
|
|
* - MEDIA_BUS_FMT_UYVY8_1X16,
|
|
* - MEDIA_BUS_FMT_YUV8_1X24,
|
|
* - MEDIA_BUS_FMT_RGB888_1X24,
|
|
*/
|
|
|
|
/* Can return a maximum of 11 possible output formats for a mode/connector */
|
|
#define MAX_OUTPUT_SEL_FORMATS 11
|
|
|
|
static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *bridge_state,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state,
|
|
unsigned int *num_output_fmts)
|
|
{
|
|
struct drm_connector *conn = conn_state->connector;
|
|
struct drm_display_info *info = &conn->display_info;
|
|
struct drm_display_mode *mode = &crtc_state->mode;
|
|
u8 max_bpc = conn_state->max_requested_bpc;
|
|
bool is_hdmi2_sink = info->hdmi.scdc.supported ||
|
|
(info->color_formats & DRM_COLOR_FORMAT_YCRCB420);
|
|
u32 *output_fmts;
|
|
unsigned int i = 0;
|
|
|
|
*num_output_fmts = 0;
|
|
|
|
output_fmts = kcalloc(MAX_OUTPUT_SEL_FORMATS, sizeof(*output_fmts),
|
|
GFP_KERNEL);
|
|
if (!output_fmts)
|
|
return NULL;
|
|
|
|
/* If dw-hdmi is the first or only bridge, avoid negociating with ourselves */
|
|
if (list_is_singular(&bridge->encoder->bridge_chain) ||
|
|
list_is_first(&bridge->chain_node, &bridge->encoder->bridge_chain)) {
|
|
*num_output_fmts = 1;
|
|
output_fmts[0] = MEDIA_BUS_FMT_FIXED;
|
|
|
|
return output_fmts;
|
|
}
|
|
|
|
/*
|
|
* If the current mode enforces 4:2:0, force the output but format
|
|
* to 4:2:0 and do not add the YUV422/444/RGB formats
|
|
*/
|
|
if (conn->ycbcr_420_allowed &&
|
|
(drm_mode_is_420_only(info, mode) ||
|
|
(is_hdmi2_sink && drm_mode_is_420_also(info, mode)))) {
|
|
|
|
/* Order bus formats from 16bit to 8bit if supported */
|
|
if (max_bpc >= 16 && info->bpc == 16 &&
|
|
(info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_48))
|
|
output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY16_0_5X48;
|
|
|
|
if (max_bpc >= 12 && info->bpc >= 12 &&
|
|
(info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_36))
|
|
output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY12_0_5X36;
|
|
|
|
if (max_bpc >= 10 && info->bpc >= 10 &&
|
|
(info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_30))
|
|
output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY10_0_5X30;
|
|
|
|
/* Default 8bit fallback */
|
|
output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24;
|
|
|
|
*num_output_fmts = i;
|
|
|
|
return output_fmts;
|
|
}
|
|
|
|
/*
|
|
* Order bus formats from 16bit to 8bit and from YUV422 to RGB
|
|
* if supported. In any case the default RGB888 format is added
|
|
*/
|
|
|
|
/* Default 8bit RGB fallback */
|
|
output_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
|
|
|
|
if (max_bpc >= 16 && info->bpc == 16) {
|
|
if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
|
|
output_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48;
|
|
|
|
output_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48;
|
|
}
|
|
|
|
if (max_bpc >= 12 && info->bpc >= 12) {
|
|
if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
|
|
output_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
|
|
|
|
if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
|
|
output_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;
|
|
|
|
output_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
|
|
}
|
|
|
|
if (max_bpc >= 10 && info->bpc >= 10) {
|
|
if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
|
|
output_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
|
|
|
|
if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
|
|
output_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;
|
|
|
|
output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
|
|
}
|
|
|
|
if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
|
|
output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
|
|
|
|
if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
|
|
output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
|
|
|
|
*num_output_fmts = i;
|
|
|
|
return output_fmts;
|
|
}
|
|
|
|
/*
|
|
* Possible input formats :
|
|
* - MEDIA_BUS_FMT_RGB888_1X24
|
|
* - MEDIA_BUS_FMT_YUV8_1X24
|
|
* - MEDIA_BUS_FMT_UYVY8_1X16
|
|
* - MEDIA_BUS_FMT_UYYVYY8_0_5X24
|
|
* - MEDIA_BUS_FMT_RGB101010_1X30
|
|
* - MEDIA_BUS_FMT_YUV10_1X30
|
|
* - MEDIA_BUS_FMT_UYVY10_1X20
|
|
* - MEDIA_BUS_FMT_UYYVYY10_0_5X30
|
|
* - MEDIA_BUS_FMT_RGB121212_1X36
|
|
* - MEDIA_BUS_FMT_YUV12_1X36
|
|
* - MEDIA_BUS_FMT_UYVY12_1X24
|
|
* - MEDIA_BUS_FMT_UYYVYY12_0_5X36
|
|
* - MEDIA_BUS_FMT_RGB161616_1X48
|
|
* - MEDIA_BUS_FMT_YUV16_1X48
|
|
* - MEDIA_BUS_FMT_UYYVYY16_0_5X48
|
|
*/
|
|
|
|
/* Can return a maximum of 3 possible input formats for an output format */
|
|
#define MAX_INPUT_SEL_FORMATS 3
|
|
|
|
static u32 *dw_hdmi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *bridge_state,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state,
|
|
u32 output_fmt,
|
|
unsigned int *num_input_fmts)
|
|
{
|
|
u32 *input_fmts;
|
|
unsigned int i = 0;
|
|
|
|
*num_input_fmts = 0;
|
|
|
|
input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),
|
|
GFP_KERNEL);
|
|
if (!input_fmts)
|
|
return NULL;
|
|
|
|
switch (output_fmt) {
|
|
/* If MEDIA_BUS_FMT_FIXED is tested, return default bus format */
|
|
case MEDIA_BUS_FMT_FIXED:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
|
|
break;
|
|
/* 8bit */
|
|
case MEDIA_BUS_FMT_RGB888_1X24:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUV8_1X24:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
|
|
break;
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24;
|
|
break;
|
|
|
|
/* 10bit */
|
|
case MEDIA_BUS_FMT_RGB101010_1X30:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUV10_1X30:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
|
|
break;
|
|
case MEDIA_BUS_FMT_UYVY10_1X20:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
|
|
break;
|
|
|
|
/* 12bit */
|
|
case MEDIA_BUS_FMT_RGB121212_1X36:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUV12_1X36:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
|
|
break;
|
|
case MEDIA_BUS_FMT_UYVY12_1X24:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36;
|
|
break;
|
|
|
|
/* 16bit */
|
|
case MEDIA_BUS_FMT_RGB161616_1X48:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUV16_1X48:
|
|
input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48;
|
|
input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48;
|
|
break;
|
|
|
|
/*YUV 4:2:0 */
|
|
case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
|
|
case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
|
|
case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
|
|
case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
|
|
input_fmts[i++] = output_fmt;
|
|
break;
|
|
}
|
|
|
|
*num_input_fmts = i;
|
|
|
|
if (*num_input_fmts == 0) {
|
|
kfree(input_fmts);
|
|
input_fmts = NULL;
|
|
}
|
|
|
|
return input_fmts;
|
|
}
|
|
|
|
static int dw_hdmi_bridge_atomic_check(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *bridge_state,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
|
|
hdmi->hdmi_data.enc_out_bus_format =
|
|
bridge_state->output_bus_cfg.format;
|
|
|
|
hdmi->hdmi_data.enc_in_bus_format =
|
|
bridge_state->input_bus_cfg.format;
|
|
|
|
dev_dbg(hdmi->dev, "input format 0x%04x, output format 0x%04x\n",
|
|
bridge_state->input_bus_cfg.format,
|
|
bridge_state->output_bus_cfg.format);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dw_hdmi_bridge_attach(struct drm_bridge *bridge,
|
|
enum drm_bridge_attach_flags flags)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
|
|
if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
|
|
return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
|
|
bridge, flags);
|
|
|
|
return dw_hdmi_connector_create(hdmi);
|
|
}
|
|
|
|
static void dw_hdmi_bridge_detach(struct drm_bridge *bridge)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
|
|
mutex_lock(&hdmi->cec_notifier_mutex);
|
|
cec_notifier_conn_unregister(hdmi->cec_notifier);
|
|
hdmi->cec_notifier = NULL;
|
|
mutex_unlock(&hdmi->cec_notifier_mutex);
|
|
}
|
|
|
|
static enum drm_mode_status
|
|
dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
|
|
const struct drm_display_info *info,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
|
|
enum drm_mode_status mode_status = MODE_OK;
|
|
|
|
/* We don't support double-clocked modes */
|
|
if (mode->flags & DRM_MODE_FLAG_DBLCLK)
|
|
return MODE_BAD;
|
|
|
|
if (pdata->mode_valid)
|
|
mode_status = pdata->mode_valid(hdmi, pdata->priv_data, info,
|
|
mode);
|
|
|
|
return mode_status;
|
|
}
|
|
|
|
static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
|
|
const struct drm_display_mode *orig_mode,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
|
|
mutex_lock(&hdmi->mutex);
|
|
|
|
/* Store the display mode for plugin/DKMS poweron events */
|
|
memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode));
|
|
|
|
mutex_unlock(&hdmi->mutex);
|
|
}
|
|
|
|
static void dw_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *old_state)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
|
|
mutex_lock(&hdmi->mutex);
|
|
hdmi->disabled = true;
|
|
hdmi->curr_conn = NULL;
|
|
dw_hdmi_update_power(hdmi);
|
|
dw_hdmi_update_phy_mask(hdmi);
|
|
mutex_unlock(&hdmi->mutex);
|
|
}
|
|
|
|
static void dw_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
|
|
struct drm_bridge_state *old_state)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
struct drm_atomic_state *state = old_state->base.state;
|
|
struct drm_connector *connector;
|
|
|
|
connector = drm_atomic_get_new_connector_for_encoder(state,
|
|
bridge->encoder);
|
|
|
|
mutex_lock(&hdmi->mutex);
|
|
hdmi->disabled = false;
|
|
hdmi->curr_conn = connector;
|
|
dw_hdmi_update_power(hdmi);
|
|
dw_hdmi_update_phy_mask(hdmi);
|
|
mutex_unlock(&hdmi->mutex);
|
|
}
|
|
|
|
static enum drm_connector_status dw_hdmi_bridge_detect(struct drm_bridge *bridge)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
|
|
return dw_hdmi_detect(hdmi);
|
|
}
|
|
|
|
static struct edid *dw_hdmi_bridge_get_edid(struct drm_bridge *bridge,
|
|
struct drm_connector *connector)
|
|
{
|
|
struct dw_hdmi *hdmi = bridge->driver_private;
|
|
|
|
return dw_hdmi_get_edid(hdmi, connector);
|
|
}
|
|
|
|
static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
|
|
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
|
|
.atomic_reset = drm_atomic_helper_bridge_reset,
|
|
.attach = dw_hdmi_bridge_attach,
|
|
.detach = dw_hdmi_bridge_detach,
|
|
.atomic_check = dw_hdmi_bridge_atomic_check,
|
|
.atomic_get_output_bus_fmts = dw_hdmi_bridge_atomic_get_output_bus_fmts,
|
|
.atomic_get_input_bus_fmts = dw_hdmi_bridge_atomic_get_input_bus_fmts,
|
|
.atomic_enable = dw_hdmi_bridge_atomic_enable,
|
|
.atomic_disable = dw_hdmi_bridge_atomic_disable,
|
|
.mode_set = dw_hdmi_bridge_mode_set,
|
|
.mode_valid = dw_hdmi_bridge_mode_valid,
|
|
.detect = dw_hdmi_bridge_detect,
|
|
.get_edid = dw_hdmi_bridge_get_edid,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* IRQ Handling
|
|
*/
|
|
|
|
static irqreturn_t dw_hdmi_i2c_irq(struct dw_hdmi *hdmi)
|
|
{
|
|
struct dw_hdmi_i2c *i2c = hdmi->i2c;
|
|
unsigned int stat;
|
|
|
|
stat = hdmi_readb(hdmi, HDMI_IH_I2CM_STAT0);
|
|
if (!stat)
|
|
return IRQ_NONE;
|
|
|
|
hdmi_writeb(hdmi, stat, HDMI_IH_I2CM_STAT0);
|
|
|
|
i2c->stat = stat;
|
|
|
|
complete(&i2c->cmp);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id)
|
|
{
|
|
struct dw_hdmi *hdmi = dev_id;
|
|
u8 intr_stat;
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
if (hdmi->i2c)
|
|
ret = dw_hdmi_i2c_irq(hdmi);
|
|
|
|
intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
|
|
if (intr_stat) {
|
|
hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
|
|
return IRQ_WAKE_THREAD;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
|
|
{
|
|
mutex_lock(&hdmi->mutex);
|
|
|
|
if (!hdmi->force) {
|
|
/*
|
|
* If the RX sense status indicates we're disconnected,
|
|
* clear the software rxsense status.
|
|
*/
|
|
if (!rx_sense)
|
|
hdmi->rxsense = false;
|
|
|
|
/*
|
|
* Only set the software rxsense status when both
|
|
* rxsense and hpd indicates we're connected.
|
|
* This avoids what seems to be bad behaviour in
|
|
* at least iMX6S versions of the phy.
|
|
*/
|
|
if (hpd)
|
|
hdmi->rxsense = true;
|
|
|
|
dw_hdmi_update_power(hdmi);
|
|
dw_hdmi_update_phy_mask(hdmi);
|
|
}
|
|
mutex_unlock(&hdmi->mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense);
|
|
|
|
static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
|
|
{
|
|
struct dw_hdmi *hdmi = dev_id;
|
|
u8 intr_stat, phy_int_pol, phy_pol_mask, phy_stat;
|
|
enum drm_connector_status status = connector_status_unknown;
|
|
|
|
intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
|
|
phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0);
|
|
phy_stat = hdmi_readb(hdmi, HDMI_PHY_STAT0);
|
|
|
|
phy_pol_mask = 0;
|
|
if (intr_stat & HDMI_IH_PHY_STAT0_HPD)
|
|
phy_pol_mask |= HDMI_PHY_HPD;
|
|
if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE0)
|
|
phy_pol_mask |= HDMI_PHY_RX_SENSE0;
|
|
if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE1)
|
|
phy_pol_mask |= HDMI_PHY_RX_SENSE1;
|
|
if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE2)
|
|
phy_pol_mask |= HDMI_PHY_RX_SENSE2;
|
|
if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE3)
|
|
phy_pol_mask |= HDMI_PHY_RX_SENSE3;
|
|
|
|
if (phy_pol_mask)
|
|
hdmi_modb(hdmi, ~phy_int_pol, phy_pol_mask, HDMI_PHY_POL0);
|
|
|
|
/*
|
|
* RX sense tells us whether the TDMS transmitters are detecting
|
|
* load - in other words, there's something listening on the
|
|
* other end of the link. Use this to decide whether we should
|
|
* power on the phy as HPD may be toggled by the sink to merely
|
|
* ask the source to re-read the EDID.
|
|
*/
|
|
if (intr_stat &
|
|
(HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
|
|
dw_hdmi_setup_rx_sense(hdmi,
|
|
phy_stat & HDMI_PHY_HPD,
|
|
phy_stat & HDMI_PHY_RX_SENSE);
|
|
|
|
if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) {
|
|
mutex_lock(&hdmi->cec_notifier_mutex);
|
|
cec_notifier_phys_addr_invalidate(hdmi->cec_notifier);
|
|
mutex_unlock(&hdmi->cec_notifier_mutex);
|
|
}
|
|
|
|
if (phy_stat & HDMI_PHY_HPD)
|
|
status = connector_status_connected;
|
|
|
|
if (!(phy_stat & (HDMI_PHY_HPD | HDMI_PHY_RX_SENSE)))
|
|
status = connector_status_disconnected;
|
|
}
|
|
|
|
if (status != connector_status_unknown) {
|
|
dev_dbg(hdmi->dev, "EVENT=%s\n",
|
|
status == connector_status_connected ?
|
|
"plugin" : "plugout");
|
|
|
|
if (hdmi->bridge.dev) {
|
|
drm_helper_hpd_irq_event(hdmi->bridge.dev);
|
|
drm_bridge_hpd_notify(&hdmi->bridge, status);
|
|
}
|
|
}
|
|
|
|
hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0);
|
|
hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
|
|
HDMI_IH_MUTE_PHY_STAT0);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static const struct dw_hdmi_phy_data dw_hdmi_phys[] = {
|
|
{
|
|
.type = DW_HDMI_PHY_DWC_HDMI_TX_PHY,
|
|
.name = "DWC HDMI TX PHY",
|
|
.gen = 1,
|
|
}, {
|
|
.type = DW_HDMI_PHY_DWC_MHL_PHY_HEAC,
|
|
.name = "DWC MHL PHY + HEAC PHY",
|
|
.gen = 2,
|
|
.has_svsret = true,
|
|
.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
|
|
}, {
|
|
.type = DW_HDMI_PHY_DWC_MHL_PHY,
|
|
.name = "DWC MHL PHY",
|
|
.gen = 2,
|
|
.has_svsret = true,
|
|
.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
|
|
}, {
|
|
.type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY_HEAC,
|
|
.name = "DWC HDMI 3D TX PHY + HEAC PHY",
|
|
.gen = 2,
|
|
.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
|
|
}, {
|
|
.type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY,
|
|
.name = "DWC HDMI 3D TX PHY",
|
|
.gen = 2,
|
|
.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
|
|
}, {
|
|
.type = DW_HDMI_PHY_DWC_HDMI20_TX_PHY,
|
|
.name = "DWC HDMI 2.0 TX PHY",
|
|
.gen = 2,
|
|
.has_svsret = true,
|
|
.configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
|
|
}, {
|
|
.type = DW_HDMI_PHY_VENDOR_PHY,
|
|
.name = "Vendor PHY",
|
|
}
|
|
};
|
|
|
|
static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi)
|
|
{
|
|
unsigned int i;
|
|
u8 phy_type;
|
|
|
|
phy_type = hdmi->plat_data->phy_force_vendor ?
|
|
DW_HDMI_PHY_VENDOR_PHY :
|
|
hdmi_readb(hdmi, HDMI_CONFIG2_ID);
|
|
|
|
if (phy_type == DW_HDMI_PHY_VENDOR_PHY) {
|
|
/* Vendor PHYs require support from the glue layer. */
|
|
if (!hdmi->plat_data->phy_ops || !hdmi->plat_data->phy_name) {
|
|
dev_err(hdmi->dev,
|
|
"Vendor HDMI PHY not supported by glue layer\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
hdmi->phy.ops = hdmi->plat_data->phy_ops;
|
|
hdmi->phy.data = hdmi->plat_data->phy_data;
|
|
hdmi->phy.name = hdmi->plat_data->phy_name;
|
|
return 0;
|
|
}
|
|
|
|
/* Synopsys PHYs are handled internally. */
|
|
for (i = 0; i < ARRAY_SIZE(dw_hdmi_phys); ++i) {
|
|
if (dw_hdmi_phys[i].type == phy_type) {
|
|
hdmi->phy.ops = &dw_hdmi_synopsys_phy_ops;
|
|
hdmi->phy.name = dw_hdmi_phys[i].name;
|
|
hdmi->phy.data = (void *)&dw_hdmi_phys[i];
|
|
|
|
if (!dw_hdmi_phys[i].configure &&
|
|
!hdmi->plat_data->configure_phy) {
|
|
dev_err(hdmi->dev, "%s requires platform support\n",
|
|
hdmi->phy.name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
dev_err(hdmi->dev, "Unsupported HDMI PHY type (%02x)\n", phy_type);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void dw_hdmi_cec_enable(struct dw_hdmi *hdmi)
|
|
{
|
|
mutex_lock(&hdmi->mutex);
|
|
hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
|
hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
|
|
mutex_unlock(&hdmi->mutex);
|
|
}
|
|
|
|
static void dw_hdmi_cec_disable(struct dw_hdmi *hdmi)
|
|
{
|
|
mutex_lock(&hdmi->mutex);
|
|
hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CECCLK_DISABLE;
|
|
hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
|
|
mutex_unlock(&hdmi->mutex);
|
|
}
|
|
|
|
static const struct dw_hdmi_cec_ops dw_hdmi_cec_ops = {
|
|
.write = hdmi_writeb,
|
|
.read = hdmi_readb,
|
|
.enable = dw_hdmi_cec_enable,
|
|
.disable = dw_hdmi_cec_disable,
|
|
};
|
|
|
|
static const struct regmap_config hdmi_regmap_8bit_config = {
|
|
.reg_bits = 32,
|
|
.val_bits = 8,
|
|
.reg_stride = 1,
|
|
.max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR,
|
|
};
|
|
|
|
static const struct regmap_config hdmi_regmap_32bit_config = {
|
|
.reg_bits = 32,
|
|
.val_bits = 32,
|
|
.reg_stride = 4,
|
|
.max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR << 2,
|
|
};
|
|
|
|
static void dw_hdmi_init_hw(struct dw_hdmi *hdmi)
|
|
{
|
|
initialize_hdmi_ih_mutes(hdmi);
|
|
|
|
/*
|
|
* Reset HDMI DDC I2C master controller and mute I2CM interrupts.
|
|
* Even if we are using a separate i2c adapter doing this doesn't
|
|
* hurt.
|
|
*/
|
|
dw_hdmi_i2c_init(hdmi);
|
|
|
|
if (hdmi->phy.ops->setup_hpd)
|
|
hdmi->phy.ops->setup_hpd(hdmi, hdmi->phy.data);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Probe/remove API, used from platforms based on the DRM bridge API.
|
|
*/
|
|
|
|
static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi)
|
|
{
|
|
struct device_node *endpoint;
|
|
struct device_node *remote;
|
|
|
|
if (!hdmi->plat_data->output_port)
|
|
return 0;
|
|
|
|
endpoint = of_graph_get_endpoint_by_regs(hdmi->dev->of_node,
|
|
hdmi->plat_data->output_port,
|
|
-1);
|
|
if (!endpoint) {
|
|
/*
|
|
* On platforms whose bindings don't make the output port
|
|
* mandatory (such as Rockchip) the plat_data->output_port
|
|
* field isn't set, so it's safe to make this a fatal error.
|
|
*/
|
|
dev_err(hdmi->dev, "Missing endpoint in port@%u\n",
|
|
hdmi->plat_data->output_port);
|
|
return -ENODEV;
|
|
}
|
|
|
|
remote = of_graph_get_remote_port_parent(endpoint);
|
|
of_node_put(endpoint);
|
|
if (!remote) {
|
|
dev_err(hdmi->dev, "Endpoint in port@%u unconnected\n",
|
|
hdmi->plat_data->output_port);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!of_device_is_available(remote)) {
|
|
dev_err(hdmi->dev, "port@%u remote device is disabled\n",
|
|
hdmi->plat_data->output_port);
|
|
of_node_put(remote);
|
|
return -ENODEV;
|
|
}
|
|
|
|
hdmi->next_bridge = of_drm_find_bridge(remote);
|
|
of_node_put(remote);
|
|
if (!hdmi->next_bridge)
|
|
return -EPROBE_DEFER;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
|
|
const struct dw_hdmi_plat_data *plat_data)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *np = dev->of_node;
|
|
struct platform_device_info pdevinfo;
|
|
struct device_node *ddc_node;
|
|
struct dw_hdmi_cec_data cec;
|
|
struct dw_hdmi *hdmi;
|
|
struct resource *iores = NULL;
|
|
int irq;
|
|
int ret;
|
|
u32 val = 1;
|
|
u8 prod_id0;
|
|
u8 prod_id1;
|
|
u8 config0;
|
|
u8 config3;
|
|
|
|
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
|
|
if (!hdmi)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
hdmi->plat_data = plat_data;
|
|
hdmi->dev = dev;
|
|
hdmi->sample_rate = 48000;
|
|
hdmi->disabled = true;
|
|
hdmi->rxsense = true;
|
|
hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE);
|
|
hdmi->mc_clkdis = 0x7f;
|
|
hdmi->last_connector_result = connector_status_disconnected;
|
|
|
|
mutex_init(&hdmi->mutex);
|
|
mutex_init(&hdmi->audio_mutex);
|
|
mutex_init(&hdmi->cec_notifier_mutex);
|
|
spin_lock_init(&hdmi->audio_lock);
|
|
|
|
ret = dw_hdmi_parse_dt(hdmi);
|
|
if (ret < 0)
|
|
return ERR_PTR(ret);
|
|
|
|
ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
|
|
if (ddc_node) {
|
|
hdmi->ddc = of_get_i2c_adapter_by_node(ddc_node);
|
|
of_node_put(ddc_node);
|
|
if (!hdmi->ddc) {
|
|
dev_dbg(hdmi->dev, "failed to read ddc node\n");
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
}
|
|
|
|
} else {
|
|
dev_dbg(hdmi->dev, "no ddc property found\n");
|
|
}
|
|
|
|
if (!plat_data->regm) {
|
|
const struct regmap_config *reg_config;
|
|
|
|
of_property_read_u32(np, "reg-io-width", &val);
|
|
switch (val) {
|
|
case 4:
|
|
reg_config = &hdmi_regmap_32bit_config;
|
|
hdmi->reg_shift = 2;
|
|
break;
|
|
case 1:
|
|
reg_config = &hdmi_regmap_8bit_config;
|
|
break;
|
|
default:
|
|
dev_err(dev, "reg-io-width must be 1 or 4\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
hdmi->regs = devm_ioremap_resource(dev, iores);
|
|
if (IS_ERR(hdmi->regs)) {
|
|
ret = PTR_ERR(hdmi->regs);
|
|
goto err_res;
|
|
}
|
|
|
|
hdmi->regm = devm_regmap_init_mmio(dev, hdmi->regs, reg_config);
|
|
if (IS_ERR(hdmi->regm)) {
|
|
dev_err(dev, "Failed to configure regmap\n");
|
|
ret = PTR_ERR(hdmi->regm);
|
|
goto err_res;
|
|
}
|
|
} else {
|
|
hdmi->regm = plat_data->regm;
|
|
}
|
|
|
|
hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr");
|
|
if (IS_ERR(hdmi->isfr_clk)) {
|
|
ret = PTR_ERR(hdmi->isfr_clk);
|
|
dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret);
|
|
goto err_res;
|
|
}
|
|
|
|
ret = clk_prepare_enable(hdmi->isfr_clk);
|
|
if (ret) {
|
|
dev_err(hdmi->dev, "Cannot enable HDMI isfr clock: %d\n", ret);
|
|
goto err_res;
|
|
}
|
|
|
|
hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb");
|
|
if (IS_ERR(hdmi->iahb_clk)) {
|
|
ret = PTR_ERR(hdmi->iahb_clk);
|
|
dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret);
|
|
goto err_isfr;
|
|
}
|
|
|
|
ret = clk_prepare_enable(hdmi->iahb_clk);
|
|
if (ret) {
|
|
dev_err(hdmi->dev, "Cannot enable HDMI iahb clock: %d\n", ret);
|
|
goto err_isfr;
|
|
}
|
|
|
|
hdmi->cec_clk = devm_clk_get(hdmi->dev, "cec");
|
|
if (PTR_ERR(hdmi->cec_clk) == -ENOENT) {
|
|
hdmi->cec_clk = NULL;
|
|
} else if (IS_ERR(hdmi->cec_clk)) {
|
|
ret = PTR_ERR(hdmi->cec_clk);
|
|
if (ret != -EPROBE_DEFER)
|
|
dev_err(hdmi->dev, "Cannot get HDMI cec clock: %d\n",
|
|
ret);
|
|
|
|
hdmi->cec_clk = NULL;
|
|
goto err_iahb;
|
|
} else {
|
|
ret = clk_prepare_enable(hdmi->cec_clk);
|
|
if (ret) {
|
|
dev_err(hdmi->dev, "Cannot enable HDMI cec clock: %d\n",
|
|
ret);
|
|
goto err_iahb;
|
|
}
|
|
}
|
|
|
|
/* Product and revision IDs */
|
|
hdmi->version = (hdmi_readb(hdmi, HDMI_DESIGN_ID) << 8)
|
|
| (hdmi_readb(hdmi, HDMI_REVISION_ID) << 0);
|
|
prod_id0 = hdmi_readb(hdmi, HDMI_PRODUCT_ID0);
|
|
prod_id1 = hdmi_readb(hdmi, HDMI_PRODUCT_ID1);
|
|
|
|
if (prod_id0 != HDMI_PRODUCT_ID0_HDMI_TX ||
|
|
(prod_id1 & ~HDMI_PRODUCT_ID1_HDCP) != HDMI_PRODUCT_ID1_HDMI_TX) {
|
|
dev_err(dev, "Unsupported HDMI controller (%04x:%02x:%02x)\n",
|
|
hdmi->version, prod_id0, prod_id1);
|
|
ret = -ENODEV;
|
|
goto err_iahb;
|
|
}
|
|
|
|
ret = dw_hdmi_detect_phy(hdmi);
|
|
if (ret < 0)
|
|
goto err_iahb;
|
|
|
|
dev_info(dev, "Detected HDMI TX controller v%x.%03x %s HDCP (%s)\n",
|
|
hdmi->version >> 12, hdmi->version & 0xfff,
|
|
prod_id1 & HDMI_PRODUCT_ID1_HDCP ? "with" : "without",
|
|
hdmi->phy.name);
|
|
|
|
dw_hdmi_init_hw(hdmi);
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0) {
|
|
ret = irq;
|
|
goto err_iahb;
|
|
}
|
|
|
|
ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq,
|
|
dw_hdmi_irq, IRQF_SHARED,
|
|
dev_name(dev), hdmi);
|
|
if (ret)
|
|
goto err_iahb;
|
|
|
|
/*
|
|
* To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
|
|
* N and cts values before enabling phy
|
|
*/
|
|
hdmi_init_clk_regenerator(hdmi);
|
|
|
|
/* If DDC bus is not specified, try to register HDMI I2C bus */
|
|
if (!hdmi->ddc) {
|
|
/* Look for (optional) stuff related to unwedging */
|
|
hdmi->pinctrl = devm_pinctrl_get(dev);
|
|
if (!IS_ERR(hdmi->pinctrl)) {
|
|
hdmi->unwedge_state =
|
|
pinctrl_lookup_state(hdmi->pinctrl, "unwedge");
|
|
hdmi->default_state =
|
|
pinctrl_lookup_state(hdmi->pinctrl, "default");
|
|
|
|
if (IS_ERR(hdmi->default_state) ||
|
|
IS_ERR(hdmi->unwedge_state)) {
|
|
if (!IS_ERR(hdmi->unwedge_state))
|
|
dev_warn(dev,
|
|
"Unwedge requires default pinctrl\n");
|
|
hdmi->default_state = NULL;
|
|
hdmi->unwedge_state = NULL;
|
|
}
|
|
}
|
|
|
|
hdmi->ddc = dw_hdmi_i2c_adapter(hdmi);
|
|
if (IS_ERR(hdmi->ddc))
|
|
hdmi->ddc = NULL;
|
|
}
|
|
|
|
hdmi->bridge.driver_private = hdmi;
|
|
hdmi->bridge.funcs = &dw_hdmi_bridge_funcs;
|
|
hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
|
|
| DRM_BRIDGE_OP_HPD;
|
|
#ifdef CONFIG_OF
|
|
hdmi->bridge.of_node = pdev->dev.of_node;
|
|
#endif
|
|
|
|
memset(&pdevinfo, 0, sizeof(pdevinfo));
|
|
pdevinfo.parent = dev;
|
|
pdevinfo.id = PLATFORM_DEVID_AUTO;
|
|
|
|
config0 = hdmi_readb(hdmi, HDMI_CONFIG0_ID);
|
|
config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID);
|
|
|
|
if (iores && config3 & HDMI_CONFIG3_AHBAUDDMA) {
|
|
struct dw_hdmi_audio_data audio;
|
|
|
|
audio.phys = iores->start;
|
|
audio.base = hdmi->regs;
|
|
audio.irq = irq;
|
|
audio.hdmi = hdmi;
|
|
audio.get_eld = hdmi_audio_get_eld;
|
|
hdmi->enable_audio = dw_hdmi_ahb_audio_enable;
|
|
hdmi->disable_audio = dw_hdmi_ahb_audio_disable;
|
|
|
|
pdevinfo.name = "dw-hdmi-ahb-audio";
|
|
pdevinfo.data = &audio;
|
|
pdevinfo.size_data = sizeof(audio);
|
|
pdevinfo.dma_mask = DMA_BIT_MASK(32);
|
|
hdmi->audio = platform_device_register_full(&pdevinfo);
|
|
} else if (config0 & HDMI_CONFIG0_I2S) {
|
|
struct dw_hdmi_i2s_audio_data audio;
|
|
|
|
audio.hdmi = hdmi;
|
|
audio.get_eld = hdmi_audio_get_eld;
|
|
audio.write = hdmi_writeb;
|
|
audio.read = hdmi_readb;
|
|
hdmi->enable_audio = dw_hdmi_i2s_audio_enable;
|
|
hdmi->disable_audio = dw_hdmi_i2s_audio_disable;
|
|
|
|
pdevinfo.name = "dw-hdmi-i2s-audio";
|
|
pdevinfo.data = &audio;
|
|
pdevinfo.size_data = sizeof(audio);
|
|
pdevinfo.dma_mask = DMA_BIT_MASK(32);
|
|
hdmi->audio = platform_device_register_full(&pdevinfo);
|
|
}
|
|
|
|
if (!plat_data->disable_cec && (config0 & HDMI_CONFIG0_CEC)) {
|
|
cec.hdmi = hdmi;
|
|
cec.ops = &dw_hdmi_cec_ops;
|
|
cec.irq = irq;
|
|
|
|
pdevinfo.name = "dw-hdmi-cec";
|
|
pdevinfo.data = &cec;
|
|
pdevinfo.size_data = sizeof(cec);
|
|
pdevinfo.dma_mask = 0;
|
|
|
|
hdmi->cec = platform_device_register_full(&pdevinfo);
|
|
}
|
|
|
|
drm_bridge_add(&hdmi->bridge);
|
|
|
|
return hdmi;
|
|
|
|
err_iahb:
|
|
clk_disable_unprepare(hdmi->iahb_clk);
|
|
clk_disable_unprepare(hdmi->cec_clk);
|
|
err_isfr:
|
|
clk_disable_unprepare(hdmi->isfr_clk);
|
|
err_res:
|
|
i2c_put_adapter(hdmi->ddc);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_probe);
|
|
|
|
void dw_hdmi_remove(struct dw_hdmi *hdmi)
|
|
{
|
|
drm_bridge_remove(&hdmi->bridge);
|
|
|
|
if (hdmi->audio && !IS_ERR(hdmi->audio))
|
|
platform_device_unregister(hdmi->audio);
|
|
if (!IS_ERR(hdmi->cec))
|
|
platform_device_unregister(hdmi->cec);
|
|
|
|
/* Disable all interrupts */
|
|
hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
|
|
|
|
clk_disable_unprepare(hdmi->iahb_clk);
|
|
clk_disable_unprepare(hdmi->isfr_clk);
|
|
clk_disable_unprepare(hdmi->cec_clk);
|
|
|
|
if (hdmi->i2c)
|
|
i2c_del_adapter(&hdmi->i2c->adap);
|
|
else
|
|
i2c_put_adapter(hdmi->ddc);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_remove);
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Bind/unbind API, used from platforms based on the component framework.
|
|
*/
|
|
struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev,
|
|
struct drm_encoder *encoder,
|
|
const struct dw_hdmi_plat_data *plat_data)
|
|
{
|
|
struct dw_hdmi *hdmi;
|
|
int ret;
|
|
|
|
hdmi = dw_hdmi_probe(pdev, plat_data);
|
|
if (IS_ERR(hdmi))
|
|
return hdmi;
|
|
|
|
ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0);
|
|
if (ret) {
|
|
dw_hdmi_remove(hdmi);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
return hdmi;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_bind);
|
|
|
|
void dw_hdmi_unbind(struct dw_hdmi *hdmi)
|
|
{
|
|
dw_hdmi_remove(hdmi);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_unbind);
|
|
|
|
void dw_hdmi_resume(struct dw_hdmi *hdmi)
|
|
{
|
|
dw_hdmi_init_hw(hdmi);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dw_hdmi_resume);
|
|
|
|
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
|
|
MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
|
|
MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
|
|
MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>");
|
|
MODULE_DESCRIPTION("DW HDMI transmitter driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:dw-hdmi");
|