mtk_drm_gem.o \
mtk_drm_plane.o \
mtk_dsi.o \
- mtk_dpi.o \
- mtk_mutex.o
+ mtk_dpi.o
obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
+#include <linux/soc/mediatek/mtk-mutex.h>
#include <asm/barrier.h>
#include <soc/mediatek/smi.h>
#include "mtk_drm_ddp_comp.h"
#include "mtk_drm_gem.h"
#include "mtk_drm_plane.h"
-#include "mtk_mutex.h"
/*
* struct mtk_drm_crtc - MediaTek specific crtc structure.
};
static struct platform_driver * const mtk_drm_drivers[] = {
- &mtk_mutex_driver,
&mtk_disp_color_driver,
&mtk_disp_ovl_driver,
&mtk_disp_rdma_driver,
struct drm_atomic_state *suspend_state;
};
-extern struct platform_driver mtk_mutex_driver;
extern struct platform_driver mtk_disp_color_driver;
extern struct platform_driver mtk_disp_ovl_driver;
extern struct platform_driver mtk_disp_rdma_driver;
+++ /dev/null
-// 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 "mtk_mutex.h"
-
-#define MT2701_MUTEX0_MOD0 0x2c
-#define MT2701_MUTEX0_SOF0 0x30
-
-#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 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
-
-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 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,
-};
-
-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,
-};
-
-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);
-}
-
-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;
-}
-
-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);
-}
-
-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);
-}
-
-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));
-}
-
-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;
- }
-}
-
-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));
-}
-
-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));
-}
-
-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);
-}
-
-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));
-}
-
-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},
- {},
-};
-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,
- },
-};
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (c) 2015 MediaTek Inc.
- */
-
-#ifndef MTK_MUTEX_H
-#define MTK_MUTEX_H
-
-struct regmap;
-struct device;
-struct mtk_mutex;
-
-struct mtk_mutex *mtk_mutex_get(struct device *dev);
-int mtk_mutex_prepare(struct mtk_mutex *mutex);
-void mtk_mutex_add_comp(struct mtk_mutex *mutex,
- enum mtk_ddp_comp_id id);
-void mtk_mutex_enable(struct mtk_mutex *mutex);
-void mtk_mutex_disable(struct mtk_mutex *mutex);
-void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
- enum mtk_ddp_comp_id id);
-void mtk_mutex_unprepare(struct mtk_mutex *mutex);
-void mtk_mutex_put(struct mtk_mutex *mutex);
-void mtk_mutex_acquire(struct mtk_mutex *mutex);
-void mtk_mutex_release(struct mtk_mutex *mutex);
-
-#endif /* MTK_MUTEX_H */
obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o
obj-$(CONFIG_MTK_SCPSYS_PM_DOMAINS) += mtk-pm-domains.o
obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o
+obj-$(CONFIG_MTK_MMSYS) += mtk-mutex.o
--- /dev/null
+// 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 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 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
+
+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 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,
+};
+
+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,
+};
+
+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},
+ {},
+};
+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);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ */
+
+#ifndef MTK_MUTEX_H
+#define MTK_MUTEX_H
+
+struct regmap;
+struct device;
+struct mtk_mutex;
+
+struct mtk_mutex *mtk_mutex_get(struct device *dev);
+int mtk_mutex_prepare(struct mtk_mutex *mutex);
+void mtk_mutex_add_comp(struct mtk_mutex *mutex,
+ enum mtk_ddp_comp_id id);
+void mtk_mutex_enable(struct mtk_mutex *mutex);
+void mtk_mutex_disable(struct mtk_mutex *mutex);
+void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
+ enum mtk_ddp_comp_id id);
+void mtk_mutex_unprepare(struct mtk_mutex *mutex);
+void mtk_mutex_put(struct mtk_mutex *mutex);
+void mtk_mutex_acquire(struct mtk_mutex *mutex);
+void mtk_mutex_release(struct mtk_mutex *mutex);
+
+#endif /* MTK_MUTEX_H */
projects / linux-2.6-microblaze.git / commitdiff