| // 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 "mtk_drm_ddp.h" |
| #include "mtk_drm_ddp_comp.h" |
| |
| #define MT2701_DISP_MUTEX0_MOD0 0x2c |
| #define MT2701_DISP_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 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 MUTEX_SOF_SINGLE_MODE 0 |
| #define MUTEX_SOF_DSI0 1 |
| #define MUTEX_SOF_DSI1 2 |
| #define MUTEX_SOF_DPI0 3 |
| #define MUTEX_SOF_DPI1 4 |
| #define MUTEX_SOF_DSI2 5 |
| #define MUTEX_SOF_DSI3 6 |
| |
| |
| struct mtk_disp_mutex { |
| int id; |
| bool claimed; |
| }; |
| |
| enum mtk_ddp_mutex_sof_id { |
| DDP_MUTEX_SOF_SINGLE_MODE, |
| DDP_MUTEX_SOF_DSI0, |
| DDP_MUTEX_SOF_DSI1, |
| DDP_MUTEX_SOF_DPI0, |
| DDP_MUTEX_SOF_DPI1, |
| DDP_MUTEX_SOF_DSI2, |
| DDP_MUTEX_SOF_DSI3, |
| }; |
| |
| struct mtk_ddp_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_ddp { |
| struct device *dev; |
| struct clk *clk; |
| void __iomem *regs; |
| struct mtk_disp_mutex mutex[10]; |
| const struct mtk_ddp_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 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[DDP_MUTEX_SOF_DSI3 + 1] = { |
| [DDP_MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE, |
| [DDP_MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0, |
| [DDP_MUTEX_SOF_DSI1] = MUTEX_SOF_DSI1, |
| [DDP_MUTEX_SOF_DPI0] = MUTEX_SOF_DPI0, |
| [DDP_MUTEX_SOF_DPI1] = MUTEX_SOF_DPI1, |
| [DDP_MUTEX_SOF_DSI2] = MUTEX_SOF_DSI2, |
| [DDP_MUTEX_SOF_DSI3] = MUTEX_SOF_DSI3, |
| }; |
| |
| static const struct mtk_ddp_data mt2701_ddp_driver_data = { |
| .mutex_mod = mt2701_mutex_mod, |
| .mutex_sof = mt2712_mutex_sof, |
| .mutex_mod_reg = MT2701_DISP_MUTEX0_MOD0, |
| .mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0, |
| }; |
| |
| static const struct mtk_ddp_data mt2712_ddp_driver_data = { |
| .mutex_mod = mt2712_mutex_mod, |
| .mutex_sof = mt2712_mutex_sof, |
| .mutex_mod_reg = MT2701_DISP_MUTEX0_MOD0, |
| .mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0, |
| }; |
| |
| static const struct mtk_ddp_data mt8173_ddp_driver_data = { |
| .mutex_mod = mt8173_mutex_mod, |
| .mutex_sof = mt2712_mutex_sof, |
| .mutex_mod_reg = MT2701_DISP_MUTEX0_MOD0, |
| .mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0, |
| }; |
| |
| struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id) |
| { |
| struct mtk_ddp *ddp = dev_get_drvdata(dev); |
| |
| if (id >= 10) |
| return ERR_PTR(-EINVAL); |
| if (ddp->mutex[id].claimed) |
| return ERR_PTR(-EBUSY); |
| |
| ddp->mutex[id].claimed = true; |
| |
| return &ddp->mutex[id]; |
| } |
| |
| void mtk_disp_mutex_put(struct mtk_disp_mutex *mutex) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| |
| WARN_ON(&ddp->mutex[mutex->id] != mutex); |
| |
| mutex->claimed = false; |
| } |
| |
| int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| return clk_prepare_enable(ddp->clk); |
| } |
| |
| void mtk_disp_mutex_unprepare(struct mtk_disp_mutex *mutex) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| clk_disable_unprepare(ddp->clk); |
| } |
| |
| void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex, |
| enum mtk_ddp_comp_id id) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| unsigned int reg; |
| unsigned int sof_id; |
| unsigned int offset; |
| |
| WARN_ON(&ddp->mutex[mutex->id] != mutex); |
| |
| switch (id) { |
| case DDP_COMPONENT_DSI0: |
| sof_id = DDP_MUTEX_SOF_DSI0; |
| break; |
| case DDP_COMPONENT_DSI1: |
| sof_id = DDP_MUTEX_SOF_DSI0; |
| break; |
| case DDP_COMPONENT_DSI2: |
| sof_id = DDP_MUTEX_SOF_DSI2; |
| break; |
| case DDP_COMPONENT_DSI3: |
| sof_id = DDP_MUTEX_SOF_DSI3; |
| break; |
| case DDP_COMPONENT_DPI0: |
| sof_id = DDP_MUTEX_SOF_DPI0; |
| break; |
| case DDP_COMPONENT_DPI1: |
| sof_id = DDP_MUTEX_SOF_DPI1; |
| break; |
| default: |
| if (ddp->data->mutex_mod[id] < 32) { |
| offset = DISP_REG_MUTEX_MOD(ddp->data->mutex_mod_reg, |
| mutex->id); |
| reg = readl_relaxed(ddp->regs + offset); |
| reg |= 1 << ddp->data->mutex_mod[id]; |
| writel_relaxed(reg, ddp->regs + offset); |
| } else { |
| offset = DISP_REG_MUTEX_MOD2(mutex->id); |
| reg = readl_relaxed(ddp->regs + offset); |
| reg |= 1 << (ddp->data->mutex_mod[id] - 32); |
| writel_relaxed(reg, ddp->regs + offset); |
| } |
| return; |
| } |
| |
| writel_relaxed(ddp->data->mutex_sof[sof_id], |
| ddp->regs + |
| DISP_REG_MUTEX_SOF(ddp->data->mutex_sof_reg, mutex->id)); |
| } |
| |
| void mtk_disp_mutex_remove_comp(struct mtk_disp_mutex *mutex, |
| enum mtk_ddp_comp_id id) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| unsigned int reg; |
| unsigned int offset; |
| |
| WARN_ON(&ddp->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, |
| ddp->regs + |
| DISP_REG_MUTEX_SOF(ddp->data->mutex_sof_reg, |
| mutex->id)); |
| break; |
| default: |
| if (ddp->data->mutex_mod[id] < 32) { |
| offset = DISP_REG_MUTEX_MOD(ddp->data->mutex_mod_reg, |
| mutex->id); |
| reg = readl_relaxed(ddp->regs + offset); |
| reg &= ~(1 << ddp->data->mutex_mod[id]); |
| writel_relaxed(reg, ddp->regs + offset); |
| } else { |
| offset = DISP_REG_MUTEX_MOD2(mutex->id); |
| reg = readl_relaxed(ddp->regs + offset); |
| reg &= ~(1 << (ddp->data->mutex_mod[id] - 32)); |
| writel_relaxed(reg, ddp->regs + offset); |
| } |
| break; |
| } |
| } |
| |
| void mtk_disp_mutex_enable(struct mtk_disp_mutex *mutex) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| |
| WARN_ON(&ddp->mutex[mutex->id] != mutex); |
| |
| writel(1, ddp->regs + DISP_REG_MUTEX_EN(mutex->id)); |
| } |
| |
| void mtk_disp_mutex_disable(struct mtk_disp_mutex *mutex) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| |
| WARN_ON(&ddp->mutex[mutex->id] != mutex); |
| |
| writel(0, ddp->regs + DISP_REG_MUTEX_EN(mutex->id)); |
| } |
| |
| void mtk_disp_mutex_acquire(struct mtk_disp_mutex *mutex) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| u32 tmp; |
| |
| writel(1, ddp->regs + DISP_REG_MUTEX_EN(mutex->id)); |
| writel(1, ddp->regs + DISP_REG_MUTEX(mutex->id)); |
| if (readl_poll_timeout_atomic(ddp->regs + DISP_REG_MUTEX(mutex->id), |
| tmp, tmp & INT_MUTEX, 1, 10000)) |
| pr_err("could not acquire mutex %d\n", mutex->id); |
| } |
| |
| void mtk_disp_mutex_release(struct mtk_disp_mutex *mutex) |
| { |
| struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp, |
| mutex[mutex->id]); |
| |
| writel(0, ddp->regs + DISP_REG_MUTEX(mutex->id)); |
| } |
| |
| static int mtk_ddp_probe(struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| struct mtk_ddp *ddp; |
| struct resource *regs; |
| int i; |
| |
| ddp = devm_kzalloc(dev, sizeof(*ddp), GFP_KERNEL); |
| if (!ddp) |
| return -ENOMEM; |
| |
| for (i = 0; i < 10; i++) |
| ddp->mutex[i].id = i; |
| |
| ddp->data = of_device_get_match_data(dev); |
| |
| if (!ddp->data->no_clk) { |
| ddp->clk = devm_clk_get(dev, NULL); |
| if (IS_ERR(ddp->clk)) { |
| if (PTR_ERR(ddp->clk) != -EPROBE_DEFER) |
| dev_err(dev, "Failed to get clock\n"); |
| return PTR_ERR(ddp->clk); |
| } |
| } |
| |
| regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| ddp->regs = devm_ioremap_resource(dev, regs); |
| if (IS_ERR(ddp->regs)) { |
| dev_err(dev, "Failed to map mutex registers\n"); |
| return PTR_ERR(ddp->regs); |
| } |
| |
| platform_set_drvdata(pdev, ddp); |
| |
| return 0; |
| } |
| |
| static int mtk_ddp_remove(struct platform_device *pdev) |
| { |
| return 0; |
| } |
| |
| static const struct of_device_id ddp_driver_dt_match[] = { |
| { .compatible = "mediatek,mt2701-disp-mutex", |
| .data = &mt2701_ddp_driver_data}, |
| { .compatible = "mediatek,mt2712-disp-mutex", |
| .data = &mt2712_ddp_driver_data}, |
| { .compatible = "mediatek,mt8173-disp-mutex", |
| .data = &mt8173_ddp_driver_data}, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, ddp_driver_dt_match); |
| |
| struct platform_driver mtk_ddp_driver = { |
| .probe = mtk_ddp_probe, |
| .remove = mtk_ddp_remove, |
| .driver = { |
| .name = "mediatek-ddp", |
| .owner = THIS_MODULE, |
| .of_match_table = ddp_driver_dt_match, |
| }, |
| }; |
