525 lines
16 KiB
C
525 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015 MediaTek Inc.
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*/
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#include <linux/clk.h>
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#include <linux/iopoll.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/soc/mediatek/mtk-mmsys.h>
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#include <linux/soc/mediatek/mtk-mutex.h>
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#define MT2701_MUTEX0_MOD0 0x2c
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#define MT2701_MUTEX0_SOF0 0x30
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#define MT8183_MUTEX0_MOD0 0x30
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#define MT8183_MUTEX0_SOF0 0x2c
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#define DISP_REG_MUTEX_EN(n) (0x20 + 0x20 * (n))
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#define DISP_REG_MUTEX(n) (0x24 + 0x20 * (n))
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#define DISP_REG_MUTEX_RST(n) (0x28 + 0x20 * (n))
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#define DISP_REG_MUTEX_MOD(mutex_mod_reg, n) (mutex_mod_reg + 0x20 * (n))
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#define DISP_REG_MUTEX_SOF(mutex_sof_reg, n) (mutex_sof_reg + 0x20 * (n))
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#define DISP_REG_MUTEX_MOD2(n) (0x34 + 0x20 * (n))
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#define INT_MUTEX BIT(1)
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#define MT8167_MUTEX_MOD_DISP_PWM 1
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#define MT8167_MUTEX_MOD_DISP_OVL0 6
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#define MT8167_MUTEX_MOD_DISP_OVL1 7
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#define MT8167_MUTEX_MOD_DISP_RDMA0 8
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#define MT8167_MUTEX_MOD_DISP_RDMA1 9
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#define MT8167_MUTEX_MOD_DISP_WDMA0 10
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#define MT8167_MUTEX_MOD_DISP_CCORR 11
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#define MT8167_MUTEX_MOD_DISP_COLOR 12
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#define MT8167_MUTEX_MOD_DISP_AAL 13
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#define MT8167_MUTEX_MOD_DISP_GAMMA 14
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#define MT8167_MUTEX_MOD_DISP_DITHER 15
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#define MT8167_MUTEX_MOD_DISP_UFOE 16
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#define MT8183_MUTEX_MOD_DISP_RDMA0 0
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#define MT8183_MUTEX_MOD_DISP_RDMA1 1
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#define MT8183_MUTEX_MOD_DISP_OVL0 9
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#define MT8183_MUTEX_MOD_DISP_OVL0_2L 10
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#define MT8183_MUTEX_MOD_DISP_OVL1_2L 11
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#define MT8183_MUTEX_MOD_DISP_WDMA0 12
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#define MT8183_MUTEX_MOD_DISP_COLOR0 13
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#define MT8183_MUTEX_MOD_DISP_CCORR0 14
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#define MT8183_MUTEX_MOD_DISP_AAL0 15
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#define MT8183_MUTEX_MOD_DISP_GAMMA0 16
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#define MT8183_MUTEX_MOD_DISP_DITHER0 17
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#define MT8173_MUTEX_MOD_DISP_OVL0 11
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#define MT8173_MUTEX_MOD_DISP_OVL1 12
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#define MT8173_MUTEX_MOD_DISP_RDMA0 13
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#define MT8173_MUTEX_MOD_DISP_RDMA1 14
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#define MT8173_MUTEX_MOD_DISP_RDMA2 15
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#define MT8173_MUTEX_MOD_DISP_WDMA0 16
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#define MT8173_MUTEX_MOD_DISP_WDMA1 17
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#define MT8173_MUTEX_MOD_DISP_COLOR0 18
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#define MT8173_MUTEX_MOD_DISP_COLOR1 19
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#define MT8173_MUTEX_MOD_DISP_AAL 20
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#define MT8173_MUTEX_MOD_DISP_GAMMA 21
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#define MT8173_MUTEX_MOD_DISP_UFOE 22
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#define MT8173_MUTEX_MOD_DISP_PWM0 23
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#define MT8173_MUTEX_MOD_DISP_PWM1 24
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#define MT8173_MUTEX_MOD_DISP_OD 25
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#define MT2712_MUTEX_MOD_DISP_PWM2 10
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#define MT2712_MUTEX_MOD_DISP_OVL0 11
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#define MT2712_MUTEX_MOD_DISP_OVL1 12
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#define MT2712_MUTEX_MOD_DISP_RDMA0 13
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#define MT2712_MUTEX_MOD_DISP_RDMA1 14
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#define MT2712_MUTEX_MOD_DISP_RDMA2 15
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#define MT2712_MUTEX_MOD_DISP_WDMA0 16
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#define MT2712_MUTEX_MOD_DISP_WDMA1 17
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#define MT2712_MUTEX_MOD_DISP_COLOR0 18
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#define MT2712_MUTEX_MOD_DISP_COLOR1 19
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#define MT2712_MUTEX_MOD_DISP_AAL0 20
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#define MT2712_MUTEX_MOD_DISP_UFOE 22
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#define MT2712_MUTEX_MOD_DISP_PWM0 23
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#define MT2712_MUTEX_MOD_DISP_PWM1 24
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#define MT2712_MUTEX_MOD_DISP_OD0 25
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#define MT2712_MUTEX_MOD2_DISP_AAL1 33
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#define MT2712_MUTEX_MOD2_DISP_OD1 34
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#define MT2701_MUTEX_MOD_DISP_OVL 3
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#define MT2701_MUTEX_MOD_DISP_WDMA 6
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#define MT2701_MUTEX_MOD_DISP_COLOR 7
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#define MT2701_MUTEX_MOD_DISP_BLS 9
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#define MT2701_MUTEX_MOD_DISP_RDMA0 10
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#define MT2701_MUTEX_MOD_DISP_RDMA1 12
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#define MT2712_MUTEX_SOF_SINGLE_MODE 0
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#define MT2712_MUTEX_SOF_DSI0 1
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#define MT2712_MUTEX_SOF_DSI1 2
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#define MT2712_MUTEX_SOF_DPI0 3
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#define MT2712_MUTEX_SOF_DPI1 4
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#define MT2712_MUTEX_SOF_DSI2 5
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#define MT2712_MUTEX_SOF_DSI3 6
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#define MT8167_MUTEX_SOF_DPI0 2
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#define MT8167_MUTEX_SOF_DPI1 3
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#define MT8183_MUTEX_SOF_DSI0 1
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#define MT8183_MUTEX_SOF_DPI0 2
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#define MT8183_MUTEX_EOF_DSI0 (MT8183_MUTEX_SOF_DSI0 << 6)
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#define MT8183_MUTEX_EOF_DPI0 (MT8183_MUTEX_SOF_DPI0 << 6)
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struct mtk_mutex {
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int id;
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bool claimed;
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};
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enum mtk_mutex_sof_id {
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MUTEX_SOF_SINGLE_MODE,
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MUTEX_SOF_DSI0,
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MUTEX_SOF_DSI1,
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MUTEX_SOF_DPI0,
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MUTEX_SOF_DPI1,
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MUTEX_SOF_DSI2,
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MUTEX_SOF_DSI3,
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};
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struct mtk_mutex_data {
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const unsigned int *mutex_mod;
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const unsigned int *mutex_sof;
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const unsigned int mutex_mod_reg;
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const unsigned int mutex_sof_reg;
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const bool no_clk;
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};
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struct mtk_mutex_ctx {
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struct device *dev;
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struct clk *clk;
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void __iomem *regs;
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struct mtk_mutex mutex[10];
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const struct mtk_mutex_data *data;
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};
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static const unsigned int mt2701_mutex_mod[DDP_COMPONENT_ID_MAX] = {
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[DDP_COMPONENT_BLS] = MT2701_MUTEX_MOD_DISP_BLS,
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[DDP_COMPONENT_COLOR0] = MT2701_MUTEX_MOD_DISP_COLOR,
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[DDP_COMPONENT_OVL0] = MT2701_MUTEX_MOD_DISP_OVL,
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[DDP_COMPONENT_RDMA0] = MT2701_MUTEX_MOD_DISP_RDMA0,
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[DDP_COMPONENT_RDMA1] = MT2701_MUTEX_MOD_DISP_RDMA1,
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[DDP_COMPONENT_WDMA0] = MT2701_MUTEX_MOD_DISP_WDMA,
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};
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static const unsigned int mt2712_mutex_mod[DDP_COMPONENT_ID_MAX] = {
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[DDP_COMPONENT_AAL0] = MT2712_MUTEX_MOD_DISP_AAL0,
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[DDP_COMPONENT_AAL1] = MT2712_MUTEX_MOD2_DISP_AAL1,
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[DDP_COMPONENT_COLOR0] = MT2712_MUTEX_MOD_DISP_COLOR0,
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[DDP_COMPONENT_COLOR1] = MT2712_MUTEX_MOD_DISP_COLOR1,
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[DDP_COMPONENT_OD0] = MT2712_MUTEX_MOD_DISP_OD0,
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[DDP_COMPONENT_OD1] = MT2712_MUTEX_MOD2_DISP_OD1,
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[DDP_COMPONENT_OVL0] = MT2712_MUTEX_MOD_DISP_OVL0,
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[DDP_COMPONENT_OVL1] = MT2712_MUTEX_MOD_DISP_OVL1,
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[DDP_COMPONENT_PWM0] = MT2712_MUTEX_MOD_DISP_PWM0,
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[DDP_COMPONENT_PWM1] = MT2712_MUTEX_MOD_DISP_PWM1,
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[DDP_COMPONENT_PWM2] = MT2712_MUTEX_MOD_DISP_PWM2,
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[DDP_COMPONENT_RDMA0] = MT2712_MUTEX_MOD_DISP_RDMA0,
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[DDP_COMPONENT_RDMA1] = MT2712_MUTEX_MOD_DISP_RDMA1,
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[DDP_COMPONENT_RDMA2] = MT2712_MUTEX_MOD_DISP_RDMA2,
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[DDP_COMPONENT_UFOE] = MT2712_MUTEX_MOD_DISP_UFOE,
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[DDP_COMPONENT_WDMA0] = MT2712_MUTEX_MOD_DISP_WDMA0,
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[DDP_COMPONENT_WDMA1] = MT2712_MUTEX_MOD_DISP_WDMA1,
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};
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static const unsigned int mt8167_mutex_mod[DDP_COMPONENT_ID_MAX] = {
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[DDP_COMPONENT_AAL0] = MT8167_MUTEX_MOD_DISP_AAL,
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[DDP_COMPONENT_CCORR] = MT8167_MUTEX_MOD_DISP_CCORR,
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[DDP_COMPONENT_COLOR0] = MT8167_MUTEX_MOD_DISP_COLOR,
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[DDP_COMPONENT_DITHER] = MT8167_MUTEX_MOD_DISP_DITHER,
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[DDP_COMPONENT_GAMMA] = MT8167_MUTEX_MOD_DISP_GAMMA,
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[DDP_COMPONENT_OVL0] = MT8167_MUTEX_MOD_DISP_OVL0,
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[DDP_COMPONENT_OVL1] = MT8167_MUTEX_MOD_DISP_OVL1,
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[DDP_COMPONENT_PWM0] = MT8167_MUTEX_MOD_DISP_PWM,
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[DDP_COMPONENT_RDMA0] = MT8167_MUTEX_MOD_DISP_RDMA0,
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[DDP_COMPONENT_RDMA1] = MT8167_MUTEX_MOD_DISP_RDMA1,
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[DDP_COMPONENT_UFOE] = MT8167_MUTEX_MOD_DISP_UFOE,
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[DDP_COMPONENT_WDMA0] = MT8167_MUTEX_MOD_DISP_WDMA0,
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};
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static const unsigned int mt8173_mutex_mod[DDP_COMPONENT_ID_MAX] = {
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[DDP_COMPONENT_AAL0] = MT8173_MUTEX_MOD_DISP_AAL,
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[DDP_COMPONENT_COLOR0] = MT8173_MUTEX_MOD_DISP_COLOR0,
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[DDP_COMPONENT_COLOR1] = MT8173_MUTEX_MOD_DISP_COLOR1,
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[DDP_COMPONENT_GAMMA] = MT8173_MUTEX_MOD_DISP_GAMMA,
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[DDP_COMPONENT_OD0] = MT8173_MUTEX_MOD_DISP_OD,
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[DDP_COMPONENT_OVL0] = MT8173_MUTEX_MOD_DISP_OVL0,
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[DDP_COMPONENT_OVL1] = MT8173_MUTEX_MOD_DISP_OVL1,
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[DDP_COMPONENT_PWM0] = MT8173_MUTEX_MOD_DISP_PWM0,
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[DDP_COMPONENT_PWM1] = MT8173_MUTEX_MOD_DISP_PWM1,
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[DDP_COMPONENT_RDMA0] = MT8173_MUTEX_MOD_DISP_RDMA0,
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[DDP_COMPONENT_RDMA1] = MT8173_MUTEX_MOD_DISP_RDMA1,
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[DDP_COMPONENT_RDMA2] = MT8173_MUTEX_MOD_DISP_RDMA2,
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[DDP_COMPONENT_UFOE] = MT8173_MUTEX_MOD_DISP_UFOE,
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[DDP_COMPONENT_WDMA0] = MT8173_MUTEX_MOD_DISP_WDMA0,
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[DDP_COMPONENT_WDMA1] = MT8173_MUTEX_MOD_DISP_WDMA1,
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};
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static const unsigned int mt8183_mutex_mod[DDP_COMPONENT_ID_MAX] = {
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[DDP_COMPONENT_AAL0] = MT8183_MUTEX_MOD_DISP_AAL0,
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[DDP_COMPONENT_CCORR] = MT8183_MUTEX_MOD_DISP_CCORR0,
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[DDP_COMPONENT_COLOR0] = MT8183_MUTEX_MOD_DISP_COLOR0,
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[DDP_COMPONENT_DITHER] = MT8183_MUTEX_MOD_DISP_DITHER0,
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[DDP_COMPONENT_GAMMA] = MT8183_MUTEX_MOD_DISP_GAMMA0,
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[DDP_COMPONENT_OVL0] = MT8183_MUTEX_MOD_DISP_OVL0,
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[DDP_COMPONENT_OVL_2L0] = MT8183_MUTEX_MOD_DISP_OVL0_2L,
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[DDP_COMPONENT_OVL_2L1] = MT8183_MUTEX_MOD_DISP_OVL1_2L,
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[DDP_COMPONENT_RDMA0] = MT8183_MUTEX_MOD_DISP_RDMA0,
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[DDP_COMPONENT_RDMA1] = MT8183_MUTEX_MOD_DISP_RDMA1,
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[DDP_COMPONENT_WDMA0] = MT8183_MUTEX_MOD_DISP_WDMA0,
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};
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static const unsigned int mt2712_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
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[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
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[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0,
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[MUTEX_SOF_DSI1] = MUTEX_SOF_DSI1,
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[MUTEX_SOF_DPI0] = MUTEX_SOF_DPI0,
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[MUTEX_SOF_DPI1] = MUTEX_SOF_DPI1,
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[MUTEX_SOF_DSI2] = MUTEX_SOF_DSI2,
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[MUTEX_SOF_DSI3] = MUTEX_SOF_DSI3,
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};
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static const unsigned int mt8167_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
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[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
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[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0,
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[MUTEX_SOF_DPI0] = MT8167_MUTEX_SOF_DPI0,
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[MUTEX_SOF_DPI1] = MT8167_MUTEX_SOF_DPI1,
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};
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/* Add EOF setting so overlay hardware can receive frame done irq */
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static const unsigned int mt8183_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
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[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
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[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0 | MT8183_MUTEX_EOF_DSI0,
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[MUTEX_SOF_DPI0] = MT8183_MUTEX_SOF_DPI0 | MT8183_MUTEX_EOF_DPI0,
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};
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static const struct mtk_mutex_data mt2701_mutex_driver_data = {
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.mutex_mod = mt2701_mutex_mod,
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.mutex_sof = mt2712_mutex_sof,
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.mutex_mod_reg = MT2701_MUTEX0_MOD0,
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.mutex_sof_reg = MT2701_MUTEX0_SOF0,
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};
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static const struct mtk_mutex_data mt2712_mutex_driver_data = {
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.mutex_mod = mt2712_mutex_mod,
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.mutex_sof = mt2712_mutex_sof,
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.mutex_mod_reg = MT2701_MUTEX0_MOD0,
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.mutex_sof_reg = MT2701_MUTEX0_SOF0,
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};
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static const struct mtk_mutex_data mt8167_mutex_driver_data = {
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.mutex_mod = mt8167_mutex_mod,
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.mutex_sof = mt8167_mutex_sof,
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.mutex_mod_reg = MT2701_MUTEX0_MOD0,
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.mutex_sof_reg = MT2701_MUTEX0_SOF0,
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.no_clk = true,
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};
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static const struct mtk_mutex_data mt8173_mutex_driver_data = {
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.mutex_mod = mt8173_mutex_mod,
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.mutex_sof = mt2712_mutex_sof,
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.mutex_mod_reg = MT2701_MUTEX0_MOD0,
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.mutex_sof_reg = MT2701_MUTEX0_SOF0,
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};
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static const struct mtk_mutex_data mt8183_mutex_driver_data = {
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.mutex_mod = mt8183_mutex_mod,
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.mutex_sof = mt8183_mutex_sof,
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.mutex_mod_reg = MT8183_MUTEX0_MOD0,
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.mutex_sof_reg = MT8183_MUTEX0_SOF0,
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.no_clk = true,
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};
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struct mtk_mutex *mtk_mutex_get(struct device *dev)
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{
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struct mtk_mutex_ctx *mtx = dev_get_drvdata(dev);
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int i;
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for (i = 0; i < 10; i++)
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if (!mtx->mutex[i].claimed) {
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mtx->mutex[i].claimed = true;
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return &mtx->mutex[i];
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}
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return ERR_PTR(-EBUSY);
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}
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EXPORT_SYMBOL_GPL(mtk_mutex_get);
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void mtk_mutex_put(struct mtk_mutex *mutex)
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{
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struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
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mutex[mutex->id]);
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WARN_ON(&mtx->mutex[mutex->id] != mutex);
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mutex->claimed = false;
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}
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EXPORT_SYMBOL_GPL(mtk_mutex_put);
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int mtk_mutex_prepare(struct mtk_mutex *mutex)
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{
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struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
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mutex[mutex->id]);
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return clk_prepare_enable(mtx->clk);
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}
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EXPORT_SYMBOL_GPL(mtk_mutex_prepare);
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void mtk_mutex_unprepare(struct mtk_mutex *mutex)
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{
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struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
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mutex[mutex->id]);
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clk_disable_unprepare(mtx->clk);
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}
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EXPORT_SYMBOL_GPL(mtk_mutex_unprepare);
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void mtk_mutex_add_comp(struct mtk_mutex *mutex,
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enum mtk_ddp_comp_id id)
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{
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struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
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mutex[mutex->id]);
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unsigned int reg;
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unsigned int sof_id;
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unsigned int offset;
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WARN_ON(&mtx->mutex[mutex->id] != mutex);
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switch (id) {
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case DDP_COMPONENT_DSI0:
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sof_id = MUTEX_SOF_DSI0;
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break;
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case DDP_COMPONENT_DSI1:
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sof_id = MUTEX_SOF_DSI0;
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break;
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case DDP_COMPONENT_DSI2:
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sof_id = MUTEX_SOF_DSI2;
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break;
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case DDP_COMPONENT_DSI3:
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sof_id = MUTEX_SOF_DSI3;
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break;
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case DDP_COMPONENT_DPI0:
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sof_id = MUTEX_SOF_DPI0;
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break;
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case DDP_COMPONENT_DPI1:
|
|
sof_id = MUTEX_SOF_DPI1;
|
|
break;
|
|
default:
|
|
if (mtx->data->mutex_mod[id] < 32) {
|
|
offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
|
|
mutex->id);
|
|
reg = readl_relaxed(mtx->regs + offset);
|
|
reg |= 1 << mtx->data->mutex_mod[id];
|
|
writel_relaxed(reg, mtx->regs + offset);
|
|
} else {
|
|
offset = DISP_REG_MUTEX_MOD2(mutex->id);
|
|
reg = readl_relaxed(mtx->regs + offset);
|
|
reg |= 1 << (mtx->data->mutex_mod[id] - 32);
|
|
writel_relaxed(reg, mtx->regs + offset);
|
|
}
|
|
return;
|
|
}
|
|
|
|
writel_relaxed(mtx->data->mutex_sof[sof_id],
|
|
mtx->regs +
|
|
DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg, mutex->id));
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_mutex_add_comp);
|
|
|
|
void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
|
|
enum mtk_ddp_comp_id id)
|
|
{
|
|
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
|
|
mutex[mutex->id]);
|
|
unsigned int reg;
|
|
unsigned int offset;
|
|
|
|
WARN_ON(&mtx->mutex[mutex->id] != mutex);
|
|
|
|
switch (id) {
|
|
case DDP_COMPONENT_DSI0:
|
|
case DDP_COMPONENT_DSI1:
|
|
case DDP_COMPONENT_DSI2:
|
|
case DDP_COMPONENT_DSI3:
|
|
case DDP_COMPONENT_DPI0:
|
|
case DDP_COMPONENT_DPI1:
|
|
writel_relaxed(MUTEX_SOF_SINGLE_MODE,
|
|
mtx->regs +
|
|
DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg,
|
|
mutex->id));
|
|
break;
|
|
default:
|
|
if (mtx->data->mutex_mod[id] < 32) {
|
|
offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
|
|
mutex->id);
|
|
reg = readl_relaxed(mtx->regs + offset);
|
|
reg &= ~(1 << mtx->data->mutex_mod[id]);
|
|
writel_relaxed(reg, mtx->regs + offset);
|
|
} else {
|
|
offset = DISP_REG_MUTEX_MOD2(mutex->id);
|
|
reg = readl_relaxed(mtx->regs + offset);
|
|
reg &= ~(1 << (mtx->data->mutex_mod[id] - 32));
|
|
writel_relaxed(reg, mtx->regs + offset);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_mutex_remove_comp);
|
|
|
|
void mtk_mutex_enable(struct mtk_mutex *mutex)
|
|
{
|
|
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
|
|
mutex[mutex->id]);
|
|
|
|
WARN_ON(&mtx->mutex[mutex->id] != mutex);
|
|
|
|
writel(1, mtx->regs + DISP_REG_MUTEX_EN(mutex->id));
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_mutex_enable);
|
|
|
|
void mtk_mutex_disable(struct mtk_mutex *mutex)
|
|
{
|
|
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
|
|
mutex[mutex->id]);
|
|
|
|
WARN_ON(&mtx->mutex[mutex->id] != mutex);
|
|
|
|
writel(0, mtx->regs + DISP_REG_MUTEX_EN(mutex->id));
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_mutex_disable);
|
|
|
|
void mtk_mutex_acquire(struct mtk_mutex *mutex)
|
|
{
|
|
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
|
|
mutex[mutex->id]);
|
|
u32 tmp;
|
|
|
|
writel(1, mtx->regs + DISP_REG_MUTEX_EN(mutex->id));
|
|
writel(1, mtx->regs + DISP_REG_MUTEX(mutex->id));
|
|
if (readl_poll_timeout_atomic(mtx->regs + DISP_REG_MUTEX(mutex->id),
|
|
tmp, tmp & INT_MUTEX, 1, 10000))
|
|
pr_err("could not acquire mutex %d\n", mutex->id);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_mutex_acquire);
|
|
|
|
void mtk_mutex_release(struct mtk_mutex *mutex)
|
|
{
|
|
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
|
|
mutex[mutex->id]);
|
|
|
|
writel(0, mtx->regs + DISP_REG_MUTEX(mutex->id));
|
|
}
|
|
EXPORT_SYMBOL_GPL(mtk_mutex_release);
|
|
|
|
static int mtk_mutex_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct mtk_mutex_ctx *mtx;
|
|
struct resource *regs;
|
|
int i;
|
|
|
|
mtx = devm_kzalloc(dev, sizeof(*mtx), GFP_KERNEL);
|
|
if (!mtx)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < 10; i++)
|
|
mtx->mutex[i].id = i;
|
|
|
|
mtx->data = of_device_get_match_data(dev);
|
|
|
|
if (!mtx->data->no_clk) {
|
|
mtx->clk = devm_clk_get(dev, NULL);
|
|
if (IS_ERR(mtx->clk)) {
|
|
if (PTR_ERR(mtx->clk) != -EPROBE_DEFER)
|
|
dev_err(dev, "Failed to get clock\n");
|
|
return PTR_ERR(mtx->clk);
|
|
}
|
|
}
|
|
|
|
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
mtx->regs = devm_ioremap_resource(dev, regs);
|
|
if (IS_ERR(mtx->regs)) {
|
|
dev_err(dev, "Failed to map mutex registers\n");
|
|
return PTR_ERR(mtx->regs);
|
|
}
|
|
|
|
platform_set_drvdata(pdev, mtx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_mutex_remove(struct platform_device *pdev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id mutex_driver_dt_match[] = {
|
|
{ .compatible = "mediatek,mt2701-disp-mutex",
|
|
.data = &mt2701_mutex_driver_data},
|
|
{ .compatible = "mediatek,mt2712-disp-mutex",
|
|
.data = &mt2712_mutex_driver_data},
|
|
{ .compatible = "mediatek,mt8167-disp-mutex",
|
|
.data = &mt8167_mutex_driver_data},
|
|
{ .compatible = "mediatek,mt8173-disp-mutex",
|
|
.data = &mt8173_mutex_driver_data},
|
|
{ .compatible = "mediatek,mt8183-disp-mutex",
|
|
.data = &mt8183_mutex_driver_data},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mutex_driver_dt_match);
|
|
|
|
static struct platform_driver mtk_mutex_driver = {
|
|
.probe = mtk_mutex_probe,
|
|
.remove = mtk_mutex_remove,
|
|
.driver = {
|
|
.name = "mediatek-mutex",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = mutex_driver_dt_match,
|
|
},
|
|
};
|
|
|
|
builtin_platform_driver(mtk_mutex_driver);
|