Hi CK, On 26/03/2020 00:05, CK Hu wrote: > Hi, Matthias: > > On Wed, 2020-03-25 at 17:16 +0100, Matthias Brugger wrote: >> >> On 11/03/2020 17:53, Enric Balletbo i Serra wrote: >>> Provide a mtk_mmsys_ddp_connect() and mtk_mmsys_disconnect() functions to >>> replace mtk_ddp_add_comp_to_path() and mtk_ddp_remove_comp_from_path(). >>> Those functions will allow DRM driver and others to control the data >>> path routing. >>> >>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> >>> Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx> >>> Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx> >>> Acked-by: CK Hu <ck.hu@xxxxxxxxxxxx> >> >> This patch does not apply against v5.6-rc1. >> Please rebase as this is a quite big patch and it won't be easy to do that by hand. > > I think this patch depends on [1] which has been acked by me and I have > not picked it. The simple way is that you pick [1] first and then pick > this series. > > [1] > https://patchwork.kernel.org/patch/11406227/ In the end Enric rebased his branch on top of v5.6-rc1 so I won't take this patch into branch. So feel free to take it through yours. Regards, Matthias > > Regards, > CK > >> >> Regards, >> Matthias >> >>> --- >>> >>> Changes in v12: None >>> Changes in v10: >>> - Select CONFIG_MTK_MMSYS (CK) >>> - Pass device pointer of mmsys device instead of config regs (CK) >>> >>> Changes in v9: >>> - Introduced a new patch to move routing control into mmsys driver. >>> - Removed the patch to use regmap as is not needed anymore. >>> >>> Changes in v8: None >>> Changes in v7: None >>> >>> drivers/gpu/drm/mediatek/Kconfig | 1 + >>> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 19 +- >>> drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 256 ---------------------- >>> drivers/gpu/drm/mediatek/mtk_drm_ddp.h | 7 - >>> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 14 +- >>> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +- >>> drivers/soc/mediatek/mtk-mmsys.c | 279 ++++++++++++++++++++++++ >>> include/linux/soc/mediatek/mtk-mmsys.h | 20 ++ >>> 8 files changed, 316 insertions(+), 282 deletions(-) >>> create mode 100644 include/linux/soc/mediatek/mtk-mmsys.h >>> >>> diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig >>> index fa5ffc4fe823..c420f5a3d33b 100644 >>> --- a/drivers/gpu/drm/mediatek/Kconfig >>> +++ b/drivers/gpu/drm/mediatek/Kconfig >>> @@ -11,6 +11,7 @@ config DRM_MEDIATEK >>> select DRM_MIPI_DSI >>> select DRM_PANEL >>> select MEMORY >>> + select MTK_MMSYS >>> select MTK_SMI >>> select VIDEOMODE_HELPERS >>> help >>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c >>> index 0e05683d7b53..579a5a5d4472 100644 >>> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c >>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c >>> @@ -6,6 +6,7 @@ >>> #include <linux/clk.h> >>> #include <linux/pm_runtime.h> >>> #include <linux/soc/mediatek/mtk-cmdq.h> >>> +#include <linux/soc/mediatek/mtk-mmsys.h> >>> >>> #include <asm/barrier.h> >>> #include <soc/mediatek/smi.h> >>> @@ -28,7 +29,7 @@ >>> * @enabled: records whether crtc_enable succeeded >>> * @planes: array of 4 drm_plane structures, one for each overlay plane >>> * @pending_planes: whether any plane has pending changes to be applied >>> - * @config_regs: memory mapped mmsys configuration register space >>> + * @mmsys_dev: pointer to the mmsys device for configuration registers >>> * @mutex: handle to one of the ten disp_mutex streams >>> * @ddp_comp_nr: number of components in ddp_comp >>> * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc >>> @@ -50,7 +51,7 @@ struct mtk_drm_crtc { >>> u32 cmdq_event; >>> #endif >>> >>> - void __iomem *config_regs; >>> + struct device *mmsys_dev; >>> struct mtk_disp_mutex *mutex; >>> unsigned int ddp_comp_nr; >>> struct mtk_ddp_comp **ddp_comp; >>> @@ -296,9 +297,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc) >>> } >>> >>> for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) { >>> - mtk_ddp_add_comp_to_path(mtk_crtc->config_regs, >>> - mtk_crtc->ddp_comp[i]->id, >>> - mtk_crtc->ddp_comp[i + 1]->id); >>> + mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev, >>> + mtk_crtc->ddp_comp[i]->id, >>> + mtk_crtc->ddp_comp[i + 1]->id); >>> mtk_disp_mutex_add_comp(mtk_crtc->mutex, >>> mtk_crtc->ddp_comp[i]->id); >>> } >>> @@ -355,9 +356,9 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc) >>> mtk_crtc->ddp_comp[i]->id); >>> mtk_disp_mutex_disable(mtk_crtc->mutex); >>> for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) { >>> - mtk_ddp_remove_comp_from_path(mtk_crtc->config_regs, >>> - mtk_crtc->ddp_comp[i]->id, >>> - mtk_crtc->ddp_comp[i + 1]->id); >>> + mtk_mmsys_ddp_disconnect(mtk_crtc->mmsys_dev, >>> + mtk_crtc->ddp_comp[i]->id, >>> + mtk_crtc->ddp_comp[i + 1]->id); >>> mtk_disp_mutex_remove_comp(mtk_crtc->mutex, >>> mtk_crtc->ddp_comp[i]->id); >>> } >>> @@ -761,7 +762,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, >>> if (!mtk_crtc) >>> return -ENOMEM; >>> >>> - mtk_crtc->config_regs = priv->config_regs; >>> + mtk_crtc->mmsys_dev = priv->mmsys_dev; >>> mtk_crtc->ddp_comp_nr = path_len; >>> mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr, >>> sizeof(*mtk_crtc->ddp_comp), >>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c >>> index b885f60f474c..014c1bbe1df2 100644 >>> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c >>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c >>> @@ -13,26 +13,6 @@ >>> #include "mtk_drm_ddp.h" >>> #include "mtk_drm_ddp_comp.h" >>> >>> -#define DISP_REG_CONFIG_DISP_OVL0_MOUT_EN 0x040 >>> -#define DISP_REG_CONFIG_DISP_OVL1_MOUT_EN 0x044 >>> -#define DISP_REG_CONFIG_DISP_OD_MOUT_EN 0x048 >>> -#define DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN 0x04c >>> -#define DISP_REG_CONFIG_DISP_UFOE_MOUT_EN 0x050 >>> -#define DISP_REG_CONFIG_DISP_COLOR0_SEL_IN 0x084 >>> -#define DISP_REG_CONFIG_DISP_COLOR1_SEL_IN 0x088 >>> -#define DISP_REG_CONFIG_DSIE_SEL_IN 0x0a4 >>> -#define DISP_REG_CONFIG_DSIO_SEL_IN 0x0a8 >>> -#define DISP_REG_CONFIG_DPI_SEL_IN 0x0ac >>> -#define DISP_REG_CONFIG_DISP_RDMA2_SOUT 0x0b8 >>> -#define DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN 0x0c4 >>> -#define DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN 0x0c8 >>> -#define DISP_REG_CONFIG_MMSYS_CG_CON0 0x100 >>> - >>> -#define DISP_REG_CONFIG_DISP_OVL_MOUT_EN 0x030 >>> -#define DISP_REG_CONFIG_OUT_SEL 0x04c >>> -#define DISP_REG_CONFIG_DSI_SEL 0x050 >>> -#define DISP_REG_CONFIG_DPI_SEL 0x064 >>> - >>> #define MT2701_DISP_MUTEX0_MOD0 0x2c >>> #define MT2701_DISP_MUTEX0_SOF0 0x30 >>> >>> @@ -94,48 +74,6 @@ >>> #define MUTEX_SOF_DSI2 5 >>> #define MUTEX_SOF_DSI3 6 >>> >>> -#define OVL0_MOUT_EN_COLOR0 0x1 >>> -#define OD_MOUT_EN_RDMA0 0x1 >>> -#define OD1_MOUT_EN_RDMA1 BIT(16) >>> -#define UFOE_MOUT_EN_DSI0 0x1 >>> -#define COLOR0_SEL_IN_OVL0 0x1 >>> -#define OVL1_MOUT_EN_COLOR1 0x1 >>> -#define GAMMA_MOUT_EN_RDMA1 0x1 >>> -#define RDMA0_SOUT_DPI0 0x2 >>> -#define RDMA0_SOUT_DPI1 0x3 >>> -#define RDMA0_SOUT_DSI1 0x1 >>> -#define RDMA0_SOUT_DSI2 0x4 >>> -#define RDMA0_SOUT_DSI3 0x5 >>> -#define RDMA1_SOUT_DPI0 0x2 >>> -#define RDMA1_SOUT_DPI1 0x3 >>> -#define RDMA1_SOUT_DSI1 0x1 >>> -#define RDMA1_SOUT_DSI2 0x4 >>> -#define RDMA1_SOUT_DSI3 0x5 >>> -#define RDMA2_SOUT_DPI0 0x2 >>> -#define RDMA2_SOUT_DPI1 0x3 >>> -#define RDMA2_SOUT_DSI1 0x1 >>> -#define RDMA2_SOUT_DSI2 0x4 >>> -#define RDMA2_SOUT_DSI3 0x5 >>> -#define DPI0_SEL_IN_RDMA1 0x1 >>> -#define DPI0_SEL_IN_RDMA2 0x3 >>> -#define DPI1_SEL_IN_RDMA1 (0x1 << 8) >>> -#define DPI1_SEL_IN_RDMA2 (0x3 << 8) >>> -#define DSI0_SEL_IN_RDMA1 0x1 >>> -#define DSI0_SEL_IN_RDMA2 0x4 >>> -#define DSI1_SEL_IN_RDMA1 0x1 >>> -#define DSI1_SEL_IN_RDMA2 0x4 >>> -#define DSI2_SEL_IN_RDMA1 (0x1 << 16) >>> -#define DSI2_SEL_IN_RDMA2 (0x4 << 16) >>> -#define DSI3_SEL_IN_RDMA1 (0x1 << 16) >>> -#define DSI3_SEL_IN_RDMA2 (0x4 << 16) >>> -#define COLOR1_SEL_IN_OVL1 0x1 >>> - >>> -#define OVL_MOUT_EN_RDMA 0x1 >>> -#define BLS_TO_DSI_RDMA1_TO_DPI1 0x8 >>> -#define BLS_TO_DPI_RDMA1_TO_DSI 0x2 >>> -#define DSI_SEL_IN_BLS 0x0 >>> -#define DPI_SEL_IN_BLS 0x0 >>> -#define DSI_SEL_IN_RDMA 0x1 >>> >>> struct mtk_disp_mutex { >>> int id; >>> @@ -246,200 +184,6 @@ static const struct mtk_ddp_data mt8173_ddp_driver_data = { >>> .mutex_sof_reg = MT2701_DISP_MUTEX0_SOF0, >>> }; >>> >>> -static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur, >>> - enum mtk_ddp_comp_id next, >>> - unsigned int *addr) >>> -{ >>> - unsigned int value; >>> - >>> - if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) { >>> - *addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN; >>> - value = OVL0_MOUT_EN_COLOR0; >>> - } else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) { >>> - *addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN; >>> - value = OVL_MOUT_EN_RDMA; >>> - } else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) { >>> - *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN; >>> - value = OD_MOUT_EN_RDMA0; >>> - } else if (cur == DDP_COMPONENT_UFOE && next == DDP_COMPONENT_DSI0) { >>> - *addr = DISP_REG_CONFIG_DISP_UFOE_MOUT_EN; >>> - value = UFOE_MOUT_EN_DSI0; >>> - } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) { >>> - *addr = DISP_REG_CONFIG_DISP_OVL1_MOUT_EN; >>> - value = OVL1_MOUT_EN_COLOR1; >>> - } else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) { >>> - *addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN; >>> - value = GAMMA_MOUT_EN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) { >>> - *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN; >>> - value = OD1_MOUT_EN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI0) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> - value = RDMA0_SOUT_DPI0; >>> - } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI1) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> - value = RDMA0_SOUT_DPI1; >>> - } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI1) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> - value = RDMA0_SOUT_DSI1; >>> - } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI2) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> - value = RDMA0_SOUT_DSI2; >>> - } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI3) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> - value = RDMA0_SOUT_DSI3; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> - value = RDMA1_SOUT_DSI1; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> - value = RDMA1_SOUT_DSI2; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> - value = RDMA1_SOUT_DSI3; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> - value = RDMA1_SOUT_DPI0; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> - value = RDMA1_SOUT_DPI1; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> - value = RDMA2_SOUT_DPI0; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> - value = RDMA2_SOUT_DPI1; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> - value = RDMA2_SOUT_DSI1; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> - value = RDMA2_SOUT_DSI2; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) { >>> - *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> - value = RDMA2_SOUT_DSI3; >>> - } else { >>> - value = 0; >>> - } >>> - >>> - return value; >>> -} >>> - >>> -static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur, >>> - enum mtk_ddp_comp_id next, >>> - unsigned int *addr) >>> -{ >>> - unsigned int value; >>> - >>> - if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) { >>> - *addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN; >>> - value = COLOR0_SEL_IN_OVL0; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) { >>> - *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> - value = DPI0_SEL_IN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) { >>> - *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> - value = DPI1_SEL_IN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) { >>> - *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> - value = DSI0_SEL_IN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) { >>> - *addr = DISP_REG_CONFIG_DSIO_SEL_IN; >>> - value = DSI1_SEL_IN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) { >>> - *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> - value = DSI2_SEL_IN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) { >>> - *addr = DISP_REG_CONFIG_DSIO_SEL_IN; >>> - value = DSI3_SEL_IN_RDMA1; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) { >>> - *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> - value = DPI0_SEL_IN_RDMA2; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) { >>> - *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> - value = DPI1_SEL_IN_RDMA2; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI0) { >>> - *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> - value = DSI0_SEL_IN_RDMA2; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) { >>> - *addr = DISP_REG_CONFIG_DSIO_SEL_IN; >>> - value = DSI1_SEL_IN_RDMA2; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) { >>> - *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> - value = DSI2_SEL_IN_RDMA2; >>> - } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) { >>> - *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> - value = DSI3_SEL_IN_RDMA2; >>> - } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) { >>> - *addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN; >>> - value = COLOR1_SEL_IN_OVL1; >>> - } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) { >>> - *addr = DISP_REG_CONFIG_DSI_SEL; >>> - value = DSI_SEL_IN_BLS; >>> - } else { >>> - value = 0; >>> - } >>> - >>> - return value; >>> -} >>> - >>> -static void mtk_ddp_sout_sel(void __iomem *config_regs, >>> - enum mtk_ddp_comp_id cur, >>> - enum mtk_ddp_comp_id next) >>> -{ >>> - if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) { >>> - writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1, >>> - config_regs + DISP_REG_CONFIG_OUT_SEL); >>> - } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) { >>> - writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI, >>> - config_regs + DISP_REG_CONFIG_OUT_SEL); >>> - writel_relaxed(DSI_SEL_IN_RDMA, >>> - config_regs + DISP_REG_CONFIG_DSI_SEL); >>> - writel_relaxed(DPI_SEL_IN_BLS, >>> - config_regs + DISP_REG_CONFIG_DPI_SEL); >>> - } >>> -} >>> - >>> -void mtk_ddp_add_comp_to_path(void __iomem *config_regs, >>> - enum mtk_ddp_comp_id cur, >>> - enum mtk_ddp_comp_id next) >>> -{ >>> - unsigned int addr, value, reg; >>> - >>> - value = mtk_ddp_mout_en(cur, next, &addr); >>> - if (value) { >>> - reg = readl_relaxed(config_regs + addr) | value; >>> - writel_relaxed(reg, config_regs + addr); >>> - } >>> - >>> - mtk_ddp_sout_sel(config_regs, cur, next); >>> - >>> - value = mtk_ddp_sel_in(cur, next, &addr); >>> - if (value) { >>> - reg = readl_relaxed(config_regs + addr) | value; >>> - writel_relaxed(reg, config_regs + addr); >>> - } >>> -} >>> - >>> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs, >>> - enum mtk_ddp_comp_id cur, >>> - enum mtk_ddp_comp_id next) >>> -{ >>> - unsigned int addr, value, reg; >>> - >>> - value = mtk_ddp_mout_en(cur, next, &addr); >>> - if (value) { >>> - reg = readl_relaxed(config_regs + addr) & ~value; >>> - writel_relaxed(reg, config_regs + addr); >>> - } >>> - >>> - value = mtk_ddp_sel_in(cur, next, &addr); >>> - if (value) { >>> - reg = readl_relaxed(config_regs + addr) & ~value; >>> - writel_relaxed(reg, config_regs + addr); >>> - } >>> -} >>> - >>> struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id) >>> { >>> struct mtk_ddp *ddp = dev_get_drvdata(dev); >>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h >>> index 827be424a148..6b691a57be4a 100644 >>> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h >>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h >>> @@ -12,13 +12,6 @@ struct regmap; >>> struct device; >>> struct mtk_disp_mutex; >>> >>> -void mtk_ddp_add_comp_to_path(void __iomem *config_regs, >>> - enum mtk_ddp_comp_id cur, >>> - enum mtk_ddp_comp_id next); >>> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs, >>> - enum mtk_ddp_comp_id cur, >>> - enum mtk_ddp_comp_id next); >>> - >>> struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id); >>> int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex); >>> void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex, >>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c >>> index 8e2d3cb62ad5..208f9c5256ef 100644 >>> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c >>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c >>> @@ -10,6 +10,7 @@ >>> #include <linux/of_address.h> >>> #include <linux/of_platform.h> >>> #include <linux/pm_runtime.h> >>> +#include <linux/soc/mediatek/mtk-mmsys.h> >>> #include <linux/dma-mapping.h> >>> >>> #include <drm/drm_atomic.h> >>> @@ -425,7 +426,6 @@ static int mtk_drm_probe(struct platform_device *pdev) >>> { >>> struct device *dev = &pdev->dev; >>> struct mtk_drm_private *private; >>> - struct resource *mem; >>> struct device_node *node; >>> struct component_match *match = NULL; >>> int ret; >>> @@ -436,14 +436,10 @@ static int mtk_drm_probe(struct platform_device *pdev) >>> return -ENOMEM; >>> >>> private->data = of_device_get_match_data(dev); >>> - >>> - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); >>> - private->config_regs = devm_ioremap_resource(dev, mem); >>> - if (IS_ERR(private->config_regs)) { >>> - ret = PTR_ERR(private->config_regs); >>> - dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n", >>> - ret); >>> - return ret; >>> + private->mmsys_dev = dev->parent; >>> + if (!private->mmsys_dev) { >>> + dev_err(dev, "Failed to get MMSYS device\n"); >>> + return -ENODEV; >>> } >>> >>> /* Iterate over sibling DISP function blocks */ >>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h >>> index 17bc99b9f5d4..b5be63e53176 100644 >>> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h >>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h >>> @@ -39,7 +39,7 @@ struct mtk_drm_private { >>> >>> struct device_node *mutex_node; >>> struct device *mutex_dev; >>> - void __iomem *config_regs; >>> + struct device *mmsys_dev; >>> struct device_node *comp_node[DDP_COMPONENT_ID_MAX]; >>> struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX]; >>> const struct mtk_mmsys_driver_data *data; >>> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c >>> index dbdfedd302fa..4b286b525cd3 100644 >>> --- a/drivers/soc/mediatek/mtk-mmsys.c >>> +++ b/drivers/soc/mediatek/mtk-mmsys.c >>> @@ -5,8 +5,76 @@ >>> */ >>> >>> #include <linux/clk-provider.h> >>> +#include <linux/device.h> >>> #include <linux/of_device.h> >>> #include <linux/platform_device.h> >>> +#include <linux/soc/mediatek/mtk-mmsys.h> >>> + >>> +#include "../../gpu/drm/mediatek/mtk_drm_ddp.h" >>> +#include "../../gpu/drm/mediatek/mtk_drm_ddp_comp.h" >>> + >>> +#define DISP_REG_CONFIG_DISP_OVL0_MOUT_EN 0x040 >>> +#define DISP_REG_CONFIG_DISP_OVL1_MOUT_EN 0x044 >>> +#define DISP_REG_CONFIG_DISP_OD_MOUT_EN 0x048 >>> +#define DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN 0x04c >>> +#define DISP_REG_CONFIG_DISP_UFOE_MOUT_EN 0x050 >>> +#define DISP_REG_CONFIG_DISP_COLOR0_SEL_IN 0x084 >>> +#define DISP_REG_CONFIG_DISP_COLOR1_SEL_IN 0x088 >>> +#define DISP_REG_CONFIG_DSIE_SEL_IN 0x0a4 >>> +#define DISP_REG_CONFIG_DSIO_SEL_IN 0x0a8 >>> +#define DISP_REG_CONFIG_DPI_SEL_IN 0x0ac >>> +#define DISP_REG_CONFIG_DISP_RDMA2_SOUT 0x0b8 >>> +#define DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN 0x0c4 >>> +#define DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN 0x0c8 >>> +#define DISP_REG_CONFIG_MMSYS_CG_CON0 0x100 >>> + >>> +#define DISP_REG_CONFIG_DISP_OVL_MOUT_EN 0x030 >>> +#define DISP_REG_CONFIG_OUT_SEL 0x04c >>> +#define DISP_REG_CONFIG_DSI_SEL 0x050 >>> +#define DISP_REG_CONFIG_DPI_SEL 0x064 >>> + >>> +#define OVL0_MOUT_EN_COLOR0 0x1 >>> +#define OD_MOUT_EN_RDMA0 0x1 >>> +#define OD1_MOUT_EN_RDMA1 BIT(16) >>> +#define UFOE_MOUT_EN_DSI0 0x1 >>> +#define COLOR0_SEL_IN_OVL0 0x1 >>> +#define OVL1_MOUT_EN_COLOR1 0x1 >>> +#define GAMMA_MOUT_EN_RDMA1 0x1 >>> +#define RDMA0_SOUT_DPI0 0x2 >>> +#define RDMA0_SOUT_DPI1 0x3 >>> +#define RDMA0_SOUT_DSI1 0x1 >>> +#define RDMA0_SOUT_DSI2 0x4 >>> +#define RDMA0_SOUT_DSI3 0x5 >>> +#define RDMA1_SOUT_DPI0 0x2 >>> +#define RDMA1_SOUT_DPI1 0x3 >>> +#define RDMA1_SOUT_DSI1 0x1 >>> +#define RDMA1_SOUT_DSI2 0x4 >>> +#define RDMA1_SOUT_DSI3 0x5 >>> +#define RDMA2_SOUT_DPI0 0x2 >>> +#define RDMA2_SOUT_DPI1 0x3 >>> +#define RDMA2_SOUT_DSI1 0x1 >>> +#define RDMA2_SOUT_DSI2 0x4 >>> +#define RDMA2_SOUT_DSI3 0x5 >>> +#define DPI0_SEL_IN_RDMA1 0x1 >>> +#define DPI0_SEL_IN_RDMA2 0x3 >>> +#define DPI1_SEL_IN_RDMA1 (0x1 << 8) >>> +#define DPI1_SEL_IN_RDMA2 (0x3 << 8) >>> +#define DSI0_SEL_IN_RDMA1 0x1 >>> +#define DSI0_SEL_IN_RDMA2 0x4 >>> +#define DSI1_SEL_IN_RDMA1 0x1 >>> +#define DSI1_SEL_IN_RDMA2 0x4 >>> +#define DSI2_SEL_IN_RDMA1 (0x1 << 16) >>> +#define DSI2_SEL_IN_RDMA2 (0x4 << 16) >>> +#define DSI3_SEL_IN_RDMA1 (0x1 << 16) >>> +#define DSI3_SEL_IN_RDMA2 (0x4 << 16) >>> +#define COLOR1_SEL_IN_OVL1 0x1 >>> + >>> +#define OVL_MOUT_EN_RDMA 0x1 >>> +#define BLS_TO_DSI_RDMA1_TO_DPI1 0x8 >>> +#define BLS_TO_DPI_RDMA1_TO_DSI 0x2 >>> +#define DSI_SEL_IN_BLS 0x0 >>> +#define DPI_SEL_IN_BLS 0x0 >>> +#define DSI_SEL_IN_RDMA 0x1 >>> >>> struct mtk_mmsys_driver_data { >>> const char *clk_driver; >>> @@ -16,10 +84,221 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { >>> .clk_driver = "clk-mt8173-mm", >>> }; >>> >>> +static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur, >>> + enum mtk_ddp_comp_id next, >>> + unsigned int *addr) >>> +{ >>> + unsigned int value; >>> + >>> + if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) { >>> + *addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN; >>> + value = OVL0_MOUT_EN_COLOR0; >>> + } else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) { >>> + *addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN; >>> + value = OVL_MOUT_EN_RDMA; >>> + } else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) { >>> + *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN; >>> + value = OD_MOUT_EN_RDMA0; >>> + } else if (cur == DDP_COMPONENT_UFOE && next == DDP_COMPONENT_DSI0) { >>> + *addr = DISP_REG_CONFIG_DISP_UFOE_MOUT_EN; >>> + value = UFOE_MOUT_EN_DSI0; >>> + } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) { >>> + *addr = DISP_REG_CONFIG_DISP_OVL1_MOUT_EN; >>> + value = OVL1_MOUT_EN_COLOR1; >>> + } else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) { >>> + *addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN; >>> + value = GAMMA_MOUT_EN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) { >>> + *addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN; >>> + value = OD1_MOUT_EN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI0) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> + value = RDMA0_SOUT_DPI0; >>> + } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI1) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> + value = RDMA0_SOUT_DPI1; >>> + } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI1) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> + value = RDMA0_SOUT_DSI1; >>> + } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI2) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> + value = RDMA0_SOUT_DSI2; >>> + } else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI3) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN; >>> + value = RDMA0_SOUT_DSI3; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> + value = RDMA1_SOUT_DSI1; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> + value = RDMA1_SOUT_DSI2; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> + value = RDMA1_SOUT_DSI3; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> + value = RDMA1_SOUT_DPI0; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN; >>> + value = RDMA1_SOUT_DPI1; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> + value = RDMA2_SOUT_DPI0; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> + value = RDMA2_SOUT_DPI1; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> + value = RDMA2_SOUT_DSI1; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> + value = RDMA2_SOUT_DSI2; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) { >>> + *addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT; >>> + value = RDMA2_SOUT_DSI3; >>> + } else { >>> + value = 0; >>> + } >>> + >>> + return value; >>> +} >>> + >>> +static unsigned int mtk_mmsys_ddp_sel_in(enum mtk_ddp_comp_id cur, >>> + enum mtk_ddp_comp_id next, >>> + unsigned int *addr) >>> +{ >>> + unsigned int value; >>> + >>> + if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) { >>> + *addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN; >>> + value = COLOR0_SEL_IN_OVL0; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) { >>> + *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> + value = DPI0_SEL_IN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) { >>> + *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> + value = DPI1_SEL_IN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) { >>> + *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> + value = DSI0_SEL_IN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) { >>> + *addr = DISP_REG_CONFIG_DSIO_SEL_IN; >>> + value = DSI1_SEL_IN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) { >>> + *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> + value = DSI2_SEL_IN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) { >>> + *addr = DISP_REG_CONFIG_DSIO_SEL_IN; >>> + value = DSI3_SEL_IN_RDMA1; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) { >>> + *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> + value = DPI0_SEL_IN_RDMA2; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) { >>> + *addr = DISP_REG_CONFIG_DPI_SEL_IN; >>> + value = DPI1_SEL_IN_RDMA2; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI0) { >>> + *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> + value = DSI0_SEL_IN_RDMA2; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) { >>> + *addr = DISP_REG_CONFIG_DSIO_SEL_IN; >>> + value = DSI1_SEL_IN_RDMA2; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) { >>> + *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> + value = DSI2_SEL_IN_RDMA2; >>> + } else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) { >>> + *addr = DISP_REG_CONFIG_DSIE_SEL_IN; >>> + value = DSI3_SEL_IN_RDMA2; >>> + } else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) { >>> + *addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN; >>> + value = COLOR1_SEL_IN_OVL1; >>> + } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) { >>> + *addr = DISP_REG_CONFIG_DSI_SEL; >>> + value = DSI_SEL_IN_BLS; >>> + } else { >>> + value = 0; >>> + } >>> + >>> + return value; >>> +} >>> + >>> +static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs, >>> + enum mtk_ddp_comp_id cur, >>> + enum mtk_ddp_comp_id next) >>> +{ >>> + if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) { >>> + writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1, >>> + config_regs + DISP_REG_CONFIG_OUT_SEL); >>> + } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) { >>> + writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI, >>> + config_regs + DISP_REG_CONFIG_OUT_SEL); >>> + writel_relaxed(DSI_SEL_IN_RDMA, >>> + config_regs + DISP_REG_CONFIG_DSI_SEL); >>> + writel_relaxed(DPI_SEL_IN_BLS, >>> + config_regs + DISP_REG_CONFIG_DPI_SEL); >>> + } >>> +} >>> + >>> +void mtk_mmsys_ddp_connect(struct device *dev, >>> + enum mtk_ddp_comp_id cur, >>> + enum mtk_ddp_comp_id next) >>> +{ >>> + void __iomem *config_regs = dev_get_drvdata(dev); >>> + unsigned int addr, value, reg; >>> + >>> + value = mtk_mmsys_ddp_mout_en(cur, next, &addr); >>> + if (value) { >>> + reg = readl_relaxed(config_regs + addr) | value; >>> + writel_relaxed(reg, config_regs + addr); >>> + } >>> + >>> + mtk_mmsys_ddp_sout_sel(config_regs, cur, next); >>> + >>> + value = mtk_mmsys_ddp_sel_in(cur, next, &addr); >>> + if (value) { >>> + reg = readl_relaxed(config_regs + addr) | value; >>> + writel_relaxed(reg, config_regs + addr); >>> + } >>> +} >>> + >>> +void mtk_mmsys_ddp_disconnect(struct device *dev, >>> + enum mtk_ddp_comp_id cur, >>> + enum mtk_ddp_comp_id next) >>> +{ >>> + void __iomem *config_regs = dev_get_drvdata(dev); >>> + unsigned int addr, value, reg; >>> + >>> + value = mtk_mmsys_ddp_mout_en(cur, next, &addr); >>> + if (value) { >>> + reg = readl_relaxed(config_regs + addr) & ~value; >>> + writel_relaxed(reg, config_regs + addr); >>> + } >>> + >>> + value = mtk_mmsys_ddp_sel_in(cur, next, &addr); >>> + if (value) { >>> + reg = readl_relaxed(config_regs + addr) & ~value; >>> + writel_relaxed(reg, config_regs + addr); >>> + } >>> +} >>> + >>> static int mtk_mmsys_probe(struct platform_device *pdev) >>> { >>> const struct mtk_mmsys_driver_data *data; >>> + struct device *dev = &pdev->dev; >>> struct platform_device *clks; >>> + void __iomem *config_regs; >>> + struct resource *mem; >>> + int ret; >>> + >>> + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); >>> + config_regs = devm_ioremap_resource(dev, mem); >>> + if (IS_ERR(config_regs)) { >>> + ret = PTR_ERR(config_regs); >>> + dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n", >>> + ret); >>> + return ret; >>> + } >>> + >>> + platform_set_drvdata(pdev, config_regs); >>> >>> data = of_device_get_match_data(&pdev->dev); >>> >>> diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h >>> new file mode 100644 >>> index 000000000000..7bab5d9a3d31 >>> --- /dev/null >>> +++ b/include/linux/soc/mediatek/mtk-mmsys.h >>> @@ -0,0 +1,20 @@ >>> +/* SPDX-License-Identifier: GPL-2.0-only */ >>> +/* >>> + * Copyright (c) 2015 MediaTek Inc. >>> + */ >>> + >>> +#ifndef __MTK_MMSYS_H >>> +#define __MTK_MMSYS_H >>> + >>> +enum mtk_ddp_comp_id; >>> +struct device; >>> + >>> +void mtk_mmsys_ddp_connect(struct device *dev, >>> + enum mtk_ddp_comp_id cur, >>> + enum mtk_ddp_comp_id next); >>> + >>> +void mtk_mmsys_ddp_disconnect(struct device *dev, >>> + enum mtk_ddp_comp_id cur, >>> + enum mtk_ddp_comp_id next); >>> + >>> +#endif /* __MTK_MMSYS_H */ >>> > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
