111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Red Hat
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*
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* based in parts on udlfb.c:
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* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
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* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
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* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
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*/
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#ifndef UDL_DRV_H
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#define UDL_DRV_H
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#include <linux/mm_types.h>
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#include <linux/usb.h>
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#include <drm/drm_device.h>
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#include <drm/drm_framebuffer.h>
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#include <drm/drm_gem.h>
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#include <drm/drm_simple_kms_helper.h>
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struct drm_mode_create_dumb;
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#define DRIVER_NAME "udl"
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#define DRIVER_DESC "DisplayLink"
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#define DRIVER_DATE "20120220"
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#define DRIVER_MAJOR 0
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#define DRIVER_MINOR 0
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#define DRIVER_PATCHLEVEL 1
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struct udl_device;
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struct urb_node {
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struct list_head entry;
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struct udl_device *dev;
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struct delayed_work release_urb_work;
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struct urb *urb;
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};
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struct urb_list {
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struct list_head list;
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spinlock_t lock;
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struct semaphore limit_sem;
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int available;
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int count;
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size_t size;
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};
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struct udl_device {
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struct drm_device drm;
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struct device *dev;
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struct device *dmadev;
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struct drm_simple_display_pipe display_pipe;
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struct mutex gem_lock;
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int sku_pixel_limit;
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struct urb_list urbs;
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char mode_buf[1024];
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uint32_t mode_buf_len;
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};
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#define to_udl(x) container_of(x, struct udl_device, drm)
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static inline struct usb_device *udl_to_usb_device(struct udl_device *udl)
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{
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return interface_to_usbdev(to_usb_interface(udl->drm.dev));
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}
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/* modeset */
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int udl_modeset_init(struct drm_device *dev);
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struct drm_connector *udl_connector_init(struct drm_device *dev);
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struct urb *udl_get_urb(struct drm_device *dev);
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int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
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void udl_urb_completion(struct urb *urb);
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int udl_init(struct udl_device *udl);
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int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
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const char *front, char **urb_buf_ptr,
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u32 byte_offset, u32 device_byte_offset, u32 byte_width);
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int udl_drop_usb(struct drm_device *dev);
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#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */
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#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */
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#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */
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#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */
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#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */
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#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */
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#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
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#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
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/* On/Off for driving the DisplayLink framebuffer to the display */
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#define UDL_REG_BLANK_MODE 0x1f
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#define UDL_BLANK_MODE_ON 0x00 /* hsync and vsync on, visible */
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#define UDL_BLANK_MODE_BLANKED 0x01 /* hsync and vsync on, blanked */
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#define UDL_BLANK_MODE_VSYNC_OFF 0x03 /* vsync off, blanked */
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#define UDL_BLANK_MODE_HSYNC_OFF 0x05 /* hsync off, blanked */
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#define UDL_BLANK_MODE_POWERDOWN 0x07 /* powered off; requires modeset */
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#endif
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