Hi CK,
On Mon, 2016-06-13 at 14:43 +0800, CK Hu wrote:
Hi, YT:
One comment inline.
On Thu, 2016-06-09 at 00:03 +0800, YT Shen wrote:
We need to acquire mutex before using the resources, and need to release it after finished. So we don't need to write registers in the blanking period.
Signed-off-by: YT Shen yt.shen@mediatek.com
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 75 +++++++++++++++++++------------ drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 22 +++++++++ drivers/gpu/drm/mediatek/mtk_drm_ddp.h | 2 + drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 + drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 + 5 files changed, 72 insertions(+), 29 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 24aa3ba..80d9641 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -315,6 +315,42 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc) pm_runtime_put(drm->dev); }
+static void mtk_crtc_ddp_config(struct drm_crtc *crtc) +{
- struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
- struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
- struct mtk_ddp_comp *ovl = mtk_crtc->ddp_comp[0];
- unsigned int i;
- /*
* TODO: instead of updating the registers here, we should prepare* working registers in atomic_commit and let the hardware command* queue update module registers on vblank.*/- if (state->pending_config) {
mtk_ddp_comp_config(ovl, state->pending_width,state->pending_height,state->pending_vrefresh);state->pending_config = false;- }
- if (mtk_crtc->pending_planes) {
for (i = 0; i < OVL_LAYER_NR; i++) {struct drm_plane *plane = &mtk_crtc->planes[i].base;struct mtk_plane_state *plane_state;plane_state = to_mtk_plane_state(plane->state);if (plane_state->pending.config) {mtk_ddp_comp_layer_config(ovl, i, plane_state);plane_state->pending.config = false;}}mtk_crtc->pending_planes = false;- }
+}
static void mtk_drm_crtc_enable(struct drm_crtc *crtc) { struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); @@ -391,6 +427,7 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
- struct mtk_drm_private *priv = crtc->dev->dev_private; unsigned int pending_planes = 0; int i;
@@ -409,6 +446,12 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc, } if (pending_planes) mtk_crtc->pending_planes = true;
- if (priv->data->shadow_register) {
mtk_disp_mutex_acquire(mtk_crtc->mutex);mtk_crtc_ddp_config(crtc);mtk_disp_mutex_release(mtk_crtc->mutex);- }
}
static const struct drm_crtc_funcs mtk_crtc_funcs = { @@ -453,36 +496,10 @@ err_cleanup_crtc: void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *ovl) { struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
- struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
- unsigned int i;
- struct mtk_drm_private *priv = crtc->dev->dev_private;
- /*
* TODO: instead of updating the registers here, we should prepare* working registers in atomic_commit and let the hardware command* queue update module registers on vblank.*/- if (state->pending_config) {
mtk_ddp_comp_config(ovl, state->pending_width,state->pending_height,state->pending_vrefresh);state->pending_config = false;- }
- if (mtk_crtc->pending_planes) {
for (i = 0; i < OVL_LAYER_NR; i++) {struct drm_plane *plane = &mtk_crtc->planes[i].base;struct mtk_plane_state *plane_state;plane_state = to_mtk_plane_state(plane->state);if (plane_state->pending.config) {mtk_ddp_comp_layer_config(ovl, i, plane_state);plane_state->pending.config = false;}}mtk_crtc->pending_planes = false;- }
if (!priv->data->shadow_register)
mtk_crtc_ddp_config(crtc);mtk_drm_finish_page_flip(mtk_crtc);
} diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c index 8030769..fa53806 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c @@ -12,6 +12,7 @@ */
#include <linux/clk.h> +#include <linux/iopoll.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/platform_device.h> @@ -32,6 +33,7 @@ #define DISP_REG_CONFIG_MMSYS_CG_CON0 0x100
#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(n) (0x2c + 0x20 * (n)) #define DISP_REG_MUTEX_SOF(n) (0x30 + 0x20 * (n)) @@ -300,6 +302,26 @@ void mtk_disp_mutex_disable(struct mtk_disp_mutex *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));
- readl_poll_timeout_atomic(ddp->regs + DISP_REG_MUTEX(mutex->id), tmp,
tmp & 0x2, 1, 10000);+}
+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; diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h index 92c1175..f9a7991 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h @@ -37,5 +37,7 @@ void mtk_disp_mutex_remove_comp(struct mtk_disp_mutex *mutex, enum mtk_ddp_comp_id id); void mtk_disp_mutex_unprepare(struct mtk_disp_mutex *mutex); void mtk_disp_mutex_put(struct mtk_disp_mutex *mutex); +void mtk_disp_mutex_acquire(struct mtk_disp_mutex *mutex); +void mtk_disp_mutex_release(struct mtk_disp_mutex *mutex);
#endif /* MTK_DRM_DDP_H */ diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 80b4f54..e9eb535 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -133,6 +133,7 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main), .ext_path = mt8173_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
- .shadow_register = false,
global data is initialized as zero.
OK, I will update it in the next version.
};
static int mtk_drm_kms_init(struct drm_device *drm) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h index fa0b106..94f8b66 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h @@ -33,6 +33,7 @@ struct mtk_mmsys_driver_data { unsigned int main_len; const enum mtk_ddp_comp_id *ext_path; unsigned int ext_len;
- bool shadow_register;
};
struct mtk_drm_private {