diff options
| author | Hsiao Chien Sung <shawn.sung@mediatek.com> | 2023-12-14 13:58:38 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2023-12-14 14:34:13 +0000 |
| commit | b97fa2f3e19b9bbac934a2cfa9218aa67f12240e (patch) | |
| tree | 3ad1b412f780bbc4f211cb015e2d2008132ab1d7 /drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | |
| parent | 7bacaee4f5d0fdf00b1734c1be67cc415b3822c0 (diff) | |
drm/mediatek: Power on/off devices with function pointers
Different from OVL, OVL adaptor is a pseudo device so we didn't
define it in the device tree, consequently, pm_runtime_resume_and_get()
called by .atomic_enable() powers on no device. For this reason, we
implement a function to power on the RDMAs in OVL adaptor, and the
system will make sure the IOMMUs are powered on as well because of the
device link (iommus) in the RDMA nodes in DTS.
This patch separates power and clock management process, it would be
easier to maintain and add extensions.
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-15-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 4bae55bdb034..15b2eafff438 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -7,6 +7,7 @@ #define MTK_DRM_DDP_COMP_H #include <linux/io.h> +#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> @@ -46,6 +47,8 @@ enum mtk_ddp_comp_type { struct mtk_ddp_comp; struct cmdq_pkt; struct mtk_ddp_comp_funcs { + int (*power_on)(struct device *dev); + void (*power_off)(struct device *dev); int (*clk_enable)(struct device *dev); void (*clk_disable)(struct device *dev); void (*config)(struct device *dev, unsigned int w, @@ -92,6 +95,23 @@ struct mtk_ddp_comp { const struct mtk_ddp_comp_funcs *funcs; }; +static inline int mtk_ddp_comp_power_on(struct mtk_ddp_comp *comp) +{ + if (comp->funcs && comp->funcs->power_on) + return comp->funcs->power_on(comp->dev); + else + return pm_runtime_resume_and_get(comp->dev); + return 0; +} + +static inline void mtk_ddp_comp_power_off(struct mtk_ddp_comp *comp) +{ + if (comp->funcs && comp->funcs->power_off) + comp->funcs->power_off(comp->dev); + else + pm_runtime_put(comp->dev); +} + static inline int mtk_ddp_comp_clk_enable(struct mtk_ddp_comp *comp) { if (comp->funcs && comp->funcs->clk_enable) |