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linux-stable/drivers/soc/mediatek/mtk-mutex.c
Yongqiang Niu 15f1768365 soc: mediatek: add MTK mutex support for MT8186 
Add MTK mutex support for MT8186 SoC.
We need MTK mutex to control timing of display modules and there
are two display pipelines for MT8186 including internal and external
display.

MTK mutex for internal display:
- Timing source: DSI
- Control modules: OVL0/RDMA0/COLOR0/CCORR/AAL0/GAMMA/POSTMASK0/DITHER

MTK mutex for external display:
- Timing source : DPI
- Control modules: OVL_2L0/RDMA1

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2022-02-28 12:19:24 +01:00

604 lines
19 KiB
C
Raw Blame History

// 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 MT8186_MUTEX_MOD_DISP_OVL0 0
#define MT8186_MUTEX_MOD_DISP_OVL0_2L 1
#define MT8186_MUTEX_MOD_DISP_RDMA0 2
#define MT8186_MUTEX_MOD_DISP_COLOR0 4
#define MT8186_MUTEX_MOD_DISP_CCORR0 5
#define MT8186_MUTEX_MOD_DISP_AAL0 7
#define MT8186_MUTEX_MOD_DISP_GAMMA0 8
#define MT8186_MUTEX_MOD_DISP_POSTMASK0 9
#define MT8186_MUTEX_MOD_DISP_DITHER0 10
#define MT8186_MUTEX_MOD_DISP_RDMA1 17
#define MT8186_MUTEX_SOF_SINGLE_MODE 0
#define MT8186_MUTEX_SOF_DSI0 1
#define MT8186_MUTEX_SOF_DPI0 2
#define MT8186_MUTEX_EOF_DSI0 (MT8186_MUTEX_SOF_DSI0 << 6)
#define MT8186_MUTEX_EOF_DPI0 (MT8186_MUTEX_SOF_DPI0 << 6)
#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 MT8192_MUTEX_MOD_DISP_OVL0 0
#define MT8192_MUTEX_MOD_DISP_OVL0_2L 1
#define MT8192_MUTEX_MOD_DISP_RDMA0 2
#define MT8192_MUTEX_MOD_DISP_COLOR0 4
#define MT8192_MUTEX_MOD_DISP_CCORR0 5
#define MT8192_MUTEX_MOD_DISP_AAL0 6
#define MT8192_MUTEX_MOD_DISP_GAMMA0 7
#define MT8192_MUTEX_MOD_DISP_POSTMASK0 8
#define MT8192_MUTEX_MOD_DISP_DITHER0 9
#define MT8192_MUTEX_MOD_DISP_OVL2_2L 16
#define MT8192_MUTEX_MOD_DISP_RDMA4 17
#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 mt8186_mutex_mod[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_AAL0] = MT8186_MUTEX_MOD_DISP_AAL0,
[DDP_COMPONENT_CCORR] = MT8186_MUTEX_MOD_DISP_CCORR0,
[DDP_COMPONENT_COLOR0] = MT8186_MUTEX_MOD_DISP_COLOR0,
[DDP_COMPONENT_DITHER] = MT8186_MUTEX_MOD_DISP_DITHER0,
[DDP_COMPONENT_GAMMA] = MT8186_MUTEX_MOD_DISP_GAMMA0,
[DDP_COMPONENT_OVL0] = MT8186_MUTEX_MOD_DISP_OVL0,
[DDP_COMPONENT_OVL_2L0] = MT8186_MUTEX_MOD_DISP_OVL0_2L,
[DDP_COMPONENT_POSTMASK0] = MT8186_MUTEX_MOD_DISP_POSTMASK0,
[DDP_COMPONENT_RDMA0] = MT8186_MUTEX_MOD_DISP_RDMA0,
[DDP_COMPONENT_RDMA1] = MT8186_MUTEX_MOD_DISP_RDMA1,
};
static const unsigned int mt8192_mutex_mod[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_AAL0] = MT8192_MUTEX_MOD_DISP_AAL0,
[DDP_COMPONENT_CCORR] = MT8192_MUTEX_MOD_DISP_CCORR0,
[DDP_COMPONENT_COLOR0] = MT8192_MUTEX_MOD_DISP_COLOR0,
[DDP_COMPONENT_DITHER] = MT8192_MUTEX_MOD_DISP_DITHER0,
[DDP_COMPONENT_GAMMA] = MT8192_MUTEX_MOD_DISP_GAMMA0,
[DDP_COMPONENT_POSTMASK0] = MT8192_MUTEX_MOD_DISP_POSTMASK0,
[DDP_COMPONENT_OVL0] = MT8192_MUTEX_MOD_DISP_OVL0,
[DDP_COMPONENT_OVL_2L0] = MT8192_MUTEX_MOD_DISP_OVL0_2L,
[DDP_COMPONENT_OVL_2L2] = MT8192_MUTEX_MOD_DISP_OVL2_2L,
[DDP_COMPONENT_RDMA0] = MT8192_MUTEX_MOD_DISP_RDMA0,
[DDP_COMPONENT_RDMA4] = MT8192_MUTEX_MOD_DISP_RDMA4,
};
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 unsigned int mt8186_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
[MUTEX_SOF_DSI0] = MT8186_MUTEX_SOF_DSI0 | MT8186_MUTEX_EOF_DSI0,
[MUTEX_SOF_DPI0] = MT8186_MUTEX_SOF_DPI0 | MT8186_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,
};
static const struct mtk_mutex_data mt8186_mutex_driver_data = {
.mutex_mod = mt8186_mutex_mod,
.mutex_sof = mt8186_mutex_sof,
.mutex_mod_reg = MT8183_MUTEX0_MOD0,
.mutex_sof_reg = MT8183_MUTEX0_SOF0,
};
static const struct mtk_mutex_data mt8192_mutex_driver_data = {
.mutex_mod = mt8192_mutex_mod,
.mutex_sof = mt8183_mutex_sof,
.mutex_mod_reg = MT8183_MUTEX0_MOD0,
.mutex_sof_reg = MT8183_MUTEX0_SOF0,
};
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},
{ .compatible = "mediatek,mt8186-disp-mutex",
.data = &mt8186_mutex_driver_data},
{ .compatible = "mediatek,mt8192-disp-mutex",
.data = &mt8192_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);
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