Re: [PATCH v2 08/12] drm/mediatek: Get rid of mtk_smi_larb_get/put

CK Hu
2019-06-18T06:35:19Z

Hi, Yong:

On Mon, 2019-06-10 at 20:55 +0800, Yong Wu wrote:
> MediaTek IOMMU has already added the device_link between the consumer
> and smi-larb device. If the drm device call the pm_runtime_get_sync,
> the smi-larb's pm_runtime_get_sync also be called automatically.
>
> CC: CK Hu <ck.hu@mediatek.com>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>
> Reviewed-by: Evan Green <evgreen@chromium.org>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 11 -----------
> drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 26 --------------------------
> drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 -
> 3 files changed, 38 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index acad088..3a21a48 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -18,7 +18,6 @@
> #include <drm/drm_probe_helper.h>
> #include <linux/clk.h>
> #include <linux/pm_runtime.h>
> -#include <soc/mediatek/smi.h>
>
> #include "mtk_drm_drv.h"
> #include "mtk_drm_crtc.h"
> @@ -371,20 +370,12 @@ static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
> struct drm_crtc_state *old_state)
> {
> struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
> - struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
> int ret;
>
> DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
>
> - ret = mtk_smi_larb_get(comp->larb_dev);
> - if (ret) {
> - DRM_ERROR("Failed to get larb: %d\n", ret);
> - return;
> - }
> -
> ret = mtk_crtc_ddp_hw_init(mtk_crtc);
> if (ret) {
> - mtk_smi_larb_put(comp->larb_dev);
> return;
> }

Remove {}.

Regards,
CK

>
> @@ -396,7 +387,6 @@ static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
> struct drm_crtc_state *old_state)
> {
> struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
> - struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
> int i;
>
> DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
> @@ -419,7 +409,6 @@ static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
>
> drm_crtc_vblank_off(crtc);
> mtk_crtc_ddp_hw_fini(mtk_crtc);
> - mtk_smi_larb_put(comp->larb_dev);
>
> mtk_crtc->enabled = false;
> }
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> index 54ca794..ede15c9 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -265,8 +265,6 @@ int mtk_ddp_comp_init(struct device *dev, struct device_node *node,
> const struct mtk_ddp_comp_funcs *funcs)
> {
> enum mtk_ddp_comp_type type;
> - struct device_node *larb_node;
> - struct platform_device *larb_pdev;
>
> if (comp_id < 0 || comp_id >= DDP_COMPONENT_ID_MAX)
> return -EINVAL;
> @@ -296,30 +294,6 @@ int mtk_ddp_comp_init(struct device *dev, struct device_node *node,
> if (IS_ERR(comp->clk))
> return PTR_ERR(comp->clk);
>
> - /* Only DMA capable components need the LARB property */
> - comp->larb_dev = NULL;
> - if (type != MTK_DISP_OVL &&
> - type != MTK_DISP_RDMA &&
> - type != MTK_DISP_WDMA)
> - return 0;
> -
> - larb_node = of_parse_phandle(node, "mediatek,larb", 0);
> - if (!larb_node) {
> - dev_err(dev,
> - "Missing mediadek,larb phandle in %pOF node\n", node);
> - return -EINVAL;
> - }
> -
> - larb_pdev = of_find_device_by_node(larb_node);
> - if (!larb_pdev) {
> - dev_warn(dev, "Waiting for larb device %pOF\n", larb_node);
> - of_node_put(larb_node);
> - return -EPROBE_DEFER;
> - }
> - of_node_put(larb_node);
> -
> - comp->larb_dev = &larb_pdev->dev;
> -
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> index 8399229..b8dc17e 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> @@ -91,7 +91,6 @@ struct mtk_ddp_comp {
> struct clk *clk;
> void __iomem *regs;
> int irq;
> - struct device *larb_dev;
> enum mtk_ddp_comp_id id;
> const struct mtk_ddp_comp_funcs *funcs;
> };