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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015 MediaTek Inc.
*/
#include <linux/clk.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
#include <linux/soc/mediatek/mtk-mutex.h>
#define MT2701_MUTEX0_MOD0 0x2c
#define MT2701_MUTEX0_SOF0 0x30
#define MT8183_MUTEX0_MOD0 0x30
#define MT8183_MUTEX0_SOF0 0x2c
#define DISP_REG_MUTEX_EN(n) (0x20 + 0x20 * (n))
#define DISP_REG_MUTEX(n) (0x24 + 0x20 * (n))
#define DISP_REG_MUTEX_RST(n) (0x28 + 0x20 * (n))
#define DISP_REG_MUTEX_MOD(mutex_mod_reg, n) (mutex_mod_reg + 0x20 * (n))
#define DISP_REG_MUTEX_SOF(mutex_sof_reg, n) (mutex_sof_reg + 0x20 * (n))
#define DISP_REG_MUTEX_MOD2(n) (0x34 + 0x20 * (n))
#define INT_MUTEX BIT(1)
#define MT8167_MUTEX_MOD_DISP_PWM 1
#define MT8167_MUTEX_MOD_DISP_OVL0 6
#define MT8167_MUTEX_MOD_DISP_OVL1 7
#define MT8167_MUTEX_MOD_DISP_RDMA0 8
#define MT8167_MUTEX_MOD_DISP_RDMA1 9
#define MT8167_MUTEX_MOD_DISP_WDMA0 10
#define MT8167_MUTEX_MOD_DISP_CCORR 11
#define MT8167_MUTEX_MOD_DISP_COLOR 12
#define MT8167_MUTEX_MOD_DISP_AAL 13
#define MT8167_MUTEX_MOD_DISP_GAMMA 14
#define MT8167_MUTEX_MOD_DISP_DITHER 15
#define MT8167_MUTEX_MOD_DISP_UFOE 16
#define MT8183_MUTEX_MOD_DISP_RDMA0 0
#define MT8183_MUTEX_MOD_DISP_RDMA1 1
#define MT8183_MUTEX_MOD_DISP_OVL0 9
#define MT8183_MUTEX_MOD_DISP_OVL0_2L 10
#define MT8183_MUTEX_MOD_DISP_OVL1_2L 11
#define MT8183_MUTEX_MOD_DISP_WDMA0 12
#define MT8183_MUTEX_MOD_DISP_COLOR0 13
#define MT8183_MUTEX_MOD_DISP_CCORR0 14
#define MT8183_MUTEX_MOD_DISP_AAL0 15
#define MT8183_MUTEX_MOD_DISP_GAMMA0 16
#define MT8183_MUTEX_MOD_DISP_DITHER0 17
#define MT8173_MUTEX_MOD_DISP_OVL0 11
#define MT8173_MUTEX_MOD_DISP_OVL1 12
#define MT8173_MUTEX_MOD_DISP_RDMA0 13
#define MT8173_MUTEX_MOD_DISP_RDMA1 14
#define MT8173_MUTEX_MOD_DISP_RDMA2 15
#define MT8173_MUTEX_MOD_DISP_WDMA0 16
#define MT8173_MUTEX_MOD_DISP_WDMA1 17
#define MT8173_MUTEX_MOD_DISP_COLOR0 18
#define MT8173_MUTEX_MOD_DISP_COLOR1 19
#define MT8173_MUTEX_MOD_DISP_AAL 20
#define MT8173_MUTEX_MOD_DISP_GAMMA 21
#define MT8173_MUTEX_MOD_DISP_UFOE 22
#define MT8173_MUTEX_MOD_DISP_PWM0 23
#define MT8173_MUTEX_MOD_DISP_PWM1 24
#define MT8173_MUTEX_MOD_DISP_OD 25
#define MT2712_MUTEX_MOD_DISP_PWM2 10
#define MT2712_MUTEX_MOD_DISP_OVL0 11
#define MT2712_MUTEX_MOD_DISP_OVL1 12
#define MT2712_MUTEX_MOD_DISP_RDMA0 13
#define MT2712_MUTEX_MOD_DISP_RDMA1 14
#define MT2712_MUTEX_MOD_DISP_RDMA2 15
#define MT2712_MUTEX_MOD_DISP_WDMA0 16
#define MT2712_MUTEX_MOD_DISP_WDMA1 17
#define MT2712_MUTEX_MOD_DISP_COLOR0 18
#define MT2712_MUTEX_MOD_DISP_COLOR1 19
#define MT2712_MUTEX_MOD_DISP_AAL0 20
#define MT2712_MUTEX_MOD_DISP_UFOE 22
#define MT2712_MUTEX_MOD_DISP_PWM0 23
#define MT2712_MUTEX_MOD_DISP_PWM1 24
#define MT2712_MUTEX_MOD_DISP_OD0 25
#define MT2712_MUTEX_MOD2_DISP_AAL1 33
#define MT2712_MUTEX_MOD2_DISP_OD1 34
#define MT2701_MUTEX_MOD_DISP_OVL 3
#define MT2701_MUTEX_MOD_DISP_WDMA 6
#define MT2701_MUTEX_MOD_DISP_COLOR 7
#define MT2701_MUTEX_MOD_DISP_BLS 9
#define MT2701_MUTEX_MOD_DISP_RDMA0 10
#define MT2701_MUTEX_MOD_DISP_RDMA1 12
#define MT2712_MUTEX_SOF_SINGLE_MODE 0
#define MT2712_MUTEX_SOF_DSI0 1
#define MT2712_MUTEX_SOF_DSI1 2
#define MT2712_MUTEX_SOF_DPI0 3
#define MT2712_MUTEX_SOF_DPI1 4
#define MT2712_MUTEX_SOF_DSI2 5
#define MT2712_MUTEX_SOF_DSI3 6
#define MT8167_MUTEX_SOF_DPI0 2
#define MT8167_MUTEX_SOF_DPI1 3
#define MT8183_MUTEX_SOF_DSI0 1
#define MT8183_MUTEX_SOF_DPI0 2
#define MT8183_MUTEX_EOF_DSI0 (MT8183_MUTEX_SOF_DSI0 << 6)
#define MT8183_MUTEX_EOF_DPI0 (MT8183_MUTEX_SOF_DPI0 << 6)
struct mtk_mutex {
int id;
bool claimed;
};
enum mtk_mutex_sof_id {
MUTEX_SOF_SINGLE_MODE,
MUTEX_SOF_DSI0,
MUTEX_SOF_DSI1,
MUTEX_SOF_DPI0,
MUTEX_SOF_DPI1,
MUTEX_SOF_DSI2,
MUTEX_SOF_DSI3,
};
struct mtk_mutex_data {
const unsigned int *mutex_mod;
const unsigned int *mutex_sof;
const unsigned int mutex_mod_reg;
const unsigned int mutex_sof_reg;
const bool no_clk;
};
struct mtk_mutex_ctx {
struct device *dev;
struct clk *clk;
void __iomem *regs;
struct mtk_mutex mutex[10];
const struct mtk_mutex_data *data;
};
static const unsigned int mt2701_mutex_mod[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_BLS] = MT2701_MUTEX_MOD_DISP_BLS,
[DDP_COMPONENT_COLOR0] = MT2701_MUTEX_MOD_DISP_COLOR,
[DDP_COMPONENT_OVL0] = MT2701_MUTEX_MOD_DISP_OVL,
[DDP_COMPONENT_RDMA0] = MT2701_MUTEX_MOD_DISP_RDMA0,
[DDP_COMPONENT_RDMA1] = MT2701_MUTEX_MOD_DISP_RDMA1,
[DDP_COMPONENT_WDMA0] = MT2701_MUTEX_MOD_DISP_WDMA,
};
static const unsigned int mt2712_mutex_mod[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_AAL0] = MT2712_MUTEX_MOD_DISP_AAL0,
[DDP_COMPONENT_AAL1] = MT2712_MUTEX_MOD2_DISP_AAL1,
[DDP_COMPONENT_COLOR0] = MT2712_MUTEX_MOD_DISP_COLOR0,
[DDP_COMPONENT_COLOR1] = MT2712_MUTEX_MOD_DISP_COLOR1,
[DDP_COMPONENT_OD0] = MT2712_MUTEX_MOD_DISP_OD0,
[DDP_COMPONENT_OD1] = MT2712_MUTEX_MOD2_DISP_OD1,
[DDP_COMPONENT_OVL0] = MT2712_MUTEX_MOD_DISP_OVL0,
[DDP_COMPONENT_OVL1] = MT2712_MUTEX_MOD_DISP_OVL1,
[DDP_COMPONENT_PWM0] = MT2712_MUTEX_MOD_DISP_PWM0,
[DDP_COMPONENT_PWM1] = MT2712_MUTEX_MOD_DISP_PWM1,
[DDP_COMPONENT_PWM2] = MT2712_MUTEX_MOD_DISP_PWM2,
[DDP_COMPONENT_RDMA0] = MT2712_MUTEX_MOD_DISP_RDMA0,
[DDP_COMPONENT_RDMA1] = MT2712_MUTEX_MOD_DISP_RDMA1,
[DDP_COMPONENT_RDMA2] = MT2712_MUTEX_MOD_DISP_RDMA2,
[DDP_COMPONENT_UFOE] = MT2712_MUTEX_MOD_DISP_UFOE,
[DDP_COMPONENT_WDMA0] = MT2712_MUTEX_MOD_DISP_WDMA0,
[DDP_COMPONENT_WDMA1] = MT2712_MUTEX_MOD_DISP_WDMA1,
};
static const unsigned int mt8167_mutex_mod[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_AAL0] = MT8167_MUTEX_MOD_DISP_AAL,
[DDP_COMPONENT_CCORR] = MT8167_MUTEX_MOD_DISP_CCORR,
[DDP_COMPONENT_COLOR0] = MT8167_MUTEX_MOD_DISP_COLOR,
[DDP_COMPONENT_DITHER] = MT8167_MUTEX_MOD_DISP_DITHER,
[DDP_COMPONENT_GAMMA] = MT8167_MUTEX_MOD_DISP_GAMMA,
[DDP_COMPONENT_OVL0] = MT8167_MUTEX_MOD_DISP_OVL0,
[DDP_COMPONENT_OVL1] = MT8167_MUTEX_MOD_DISP_OVL1,
[DDP_COMPONENT_PWM0] = MT8167_MUTEX_MOD_DISP_PWM,
[DDP_COMPONENT_RDMA0] = MT8167_MUTEX_MOD_DISP_RDMA0,
[DDP_COMPONENT_RDMA1] = MT8167_MUTEX_MOD_DISP_RDMA1,
[DDP_COMPONENT_UFOE] = MT8167_MUTEX_MOD_DISP_UFOE,
[DDP_COMPONENT_WDMA0] = MT8167_MUTEX_MOD_DISP_WDMA0,
};
static const unsigned int mt8173_mutex_mod[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_AAL0] = MT8173_MUTEX_MOD_DISP_AAL,
[DDP_COMPONENT_COLOR0] = MT8173_MUTEX_MOD_DISP_COLOR0,
[DDP_COMPONENT_COLOR1] = MT8173_MUTEX_MOD_DISP_COLOR1,
[DDP_COMPONENT_GAMMA] = MT8173_MUTEX_MOD_DISP_GAMMA,
[DDP_COMPONENT_OD0] = MT8173_MUTEX_MOD_DISP_OD,
[DDP_COMPONENT_OVL0] = MT8173_MUTEX_MOD_DISP_OVL0,
[DDP_COMPONENT_OVL1] = MT8173_MUTEX_MOD_DISP_OVL1,
[DDP_COMPONENT_PWM0] = MT8173_MUTEX_MOD_DISP_PWM0,
[DDP_COMPONENT_PWM1] = MT8173_MUTEX_MOD_DISP_PWM1,
[DDP_COMPONENT_RDMA0] = MT8173_MUTEX_MOD_DISP_RDMA0,
[DDP_COMPONENT_RDMA1] = MT8173_MUTEX_MOD_DISP_RDMA1,
[DDP_COMPONENT_RDMA2] = MT8173_MUTEX_MOD_DISP_RDMA2,
[DDP_COMPONENT_UFOE] = MT8173_MUTEX_MOD_DISP_UFOE,
[DDP_COMPONENT_WDMA0] = MT8173_MUTEX_MOD_DISP_WDMA0,
[DDP_COMPONENT_WDMA1] = MT8173_MUTEX_MOD_DISP_WDMA1,
};
static const unsigned int mt8183_mutex_mod[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_AAL0] = MT8183_MUTEX_MOD_DISP_AAL0,
[DDP_COMPONENT_CCORR] = MT8183_MUTEX_MOD_DISP_CCORR0,
[DDP_COMPONENT_COLOR0] = MT8183_MUTEX_MOD_DISP_COLOR0,
[DDP_COMPONENT_DITHER] = MT8183_MUTEX_MOD_DISP_DITHER0,
[DDP_COMPONENT_GAMMA] = MT8183_MUTEX_MOD_DISP_GAMMA0,
[DDP_COMPONENT_OVL0] = MT8183_MUTEX_MOD_DISP_OVL0,
[DDP_COMPONENT_OVL_2L0] = MT8183_MUTEX_MOD_DISP_OVL0_2L,
[DDP_COMPONENT_OVL_2L1] = MT8183_MUTEX_MOD_DISP_OVL1_2L,
[DDP_COMPONENT_RDMA0] = MT8183_MUTEX_MOD_DISP_RDMA0,
[DDP_COMPONENT_RDMA1] = MT8183_MUTEX_MOD_DISP_RDMA1,
[DDP_COMPONENT_WDMA0] = MT8183_MUTEX_MOD_DISP_WDMA0,
};
static const unsigned int mt2712_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0,
[MUTEX_SOF_DSI1] = MUTEX_SOF_DSI1,
[MUTEX_SOF_DPI0] = MUTEX_SOF_DPI0,
[MUTEX_SOF_DPI1] = MUTEX_SOF_DPI1,
[MUTEX_SOF_DSI2] = MUTEX_SOF_DSI2,
[MUTEX_SOF_DSI3] = MUTEX_SOF_DSI3,
};
static const unsigned int mt8167_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0,
[MUTEX_SOF_DPI0] = MT8167_MUTEX_SOF_DPI0,
[MUTEX_SOF_DPI1] = MT8167_MUTEX_SOF_DPI1,
};
/* Add EOF setting so overlay hardware can receive frame done irq */
static const unsigned int mt8183_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0 | MT8183_MUTEX_EOF_DSI0,
[MUTEX_SOF_DPI0] = MT8183_MUTEX_SOF_DPI0 | MT8183_MUTEX_EOF_DPI0,
};
static const struct mtk_mutex_data mt2701_mutex_driver_data = {
.mutex_mod = mt2701_mutex_mod,
.mutex_sof = mt2712_mutex_sof,
.mutex_mod_reg = MT2701_MUTEX0_MOD0,
.mutex_sof_reg = MT2701_MUTEX0_SOF0,
};
static const struct mtk_mutex_data mt2712_mutex_driver_data = {
.mutex_mod = mt2712_mutex_mod,
.mutex_sof = mt2712_mutex_sof,
.mutex_mod_reg = MT2701_MUTEX0_MOD0,
.mutex_sof_reg = MT2701_MUTEX0_SOF0,
};
static const struct mtk_mutex_data mt8167_mutex_driver_data = {
.mutex_mod = mt8167_mutex_mod,
.mutex_sof = mt8167_mutex_sof,
.mutex_mod_reg = MT2701_MUTEX0_MOD0,
.mutex_sof_reg = MT2701_MUTEX0_SOF0,
.no_clk = true,
};
static const struct mtk_mutex_data mt8173_mutex_driver_data = {
.mutex_mod = mt8173_mutex_mod,
.mutex_sof = mt2712_mutex_sof,
.mutex_mod_reg = MT2701_MUTEX0_MOD0,
.mutex_sof_reg = MT2701_MUTEX0_SOF0,
};
static const struct mtk_mutex_data mt8183_mutex_driver_data = {
.mutex_mod = mt8183_mutex_mod,
.mutex_sof = mt8183_mutex_sof,
.mutex_mod_reg = MT8183_MUTEX0_MOD0,
.mutex_sof_reg = MT8183_MUTEX0_SOF0,
.no_clk = true,
};
struct mtk_mutex *mtk_mutex_get(struct device *dev)
{
struct mtk_mutex_ctx *mtx = dev_get_drvdata(dev);
int i;
for (i = 0; i < 10; i++)
if (!mtx->mutex[i].claimed) {
mtx->mutex[i].claimed = true;
return &mtx->mutex[i];
}
return ERR_PTR(-EBUSY);
}
EXPORT_SYMBOL_GPL(mtk_mutex_get);
void mtk_mutex_put(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);
mutex->claimed = false;
}
EXPORT_SYMBOL_GPL(mtk_mutex_put);
int mtk_mutex_prepare(struct mtk_mutex *mutex)
{
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
mutex[mutex->id]);
return clk_prepare_enable(mtx->clk);
}
EXPORT_SYMBOL_GPL(mtk_mutex_prepare);
void mtk_mutex_unprepare(struct mtk_mutex *mutex)
{
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
mutex[mutex->id]);
clk_disable_unprepare(mtx->clk);
}
EXPORT_SYMBOL_GPL(mtk_mutex_unprepare);
void mtk_mutex_add_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 sof_id;
unsigned int offset;
WARN_ON(&mtx->mutex[mutex->id] != mutex);
switch (id) {
case DDP_COMPONENT_DSI0:
sof_id = MUTEX_SOF_DSI0;
break;
case DDP_COMPONENT_DSI1:
sof_id = MUTEX_SOF_DSI0;
break;
case DDP_COMPONENT_DSI2:
sof_id = MUTEX_SOF_DSI2;
break;
case DDP_COMPONENT_DSI3:
sof_id = MUTEX_SOF_DSI3;
break;
case DDP_COMPONENT_DPI0:
sof_id = MUTEX_SOF_DPI0;
break;
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);
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);
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