[PATCH] drm/msm/mdp: Add capabilities to MDP planes(V2)

8 Jul 2015

MDP planes can be implemented using different type of HW pipes,
RGB/VIG/DMA pipes for MDP5 and RGB/VG/DMA pipes for MDP4. Each type
of pipe has different HW capabilities such as scaling, color space
conversion, decimation... Add a variable in plane data structure
to specify the difference of each plane which comes from mdp5_cfg data
and use it to differenciate the plane operation.
V1: Initial change
V2: Fix a typo in mdp4_kms.h
Signed-off-by: Jilai Wang jilaiw@codeaurora.org
---
 drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h   | 19 ++++----
 drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c |  7 ++-
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c   | 26 ++++++++++-
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h   | 11 +++--
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c   |  4 +-
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h   | 24 +---------
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c | 73 ++++++++++++++++++++++---------
 drivers/gpu/drm/msm/mdp/mdp_kms.h         | 13 ++++++
 8 files changed, 114 insertions(+), 63 deletions(-)

diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h
index c1ecb9d..1aaedad 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h
@@ -175,27 +175,24 @@ irqreturn_t mdp4_irq(struct msm_kms *kms);
 int mdp4_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 void mdp4_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
-static inline bool pipe_supports_yuv(enum mdp4_pipe pipe)
+static inline uint32_t mdp4_pipe_caps(enum mdp4_pipe pipe)
 {
    switch (pipe) {
    case VG1:
    case VG2:
    case VG3:
    case VG4:
-		return true;
+		return MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+			MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_CSC;
+	case RGB1:
+	case RGB2:
+	case RGB3:
+		return MDP_PIPE_CAP_SCALE;
    default:
-		return false;
+		return 0;
    }
 }
-static inline
-uint32_t mdp4_get_formats(enum mdp4_pipe pipe_id, uint32_t *pixel_formats,
-		uint32_t max_formats)
-{
-	return mdp_get_formats(pixel_formats, max_formats,
-				!pipe_supports_yuv(pipe_id));
-}
-
 void mdp4_plane_install_properties(struct drm_plane *plane,
    	struct drm_mode_object *obj);
 enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane);
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
index 0d1dbb7..c749489 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
@@ -26,6 +26,7 @@ struct mdp4_plane {
enum mdp4_pipe pipe;
+	uint32_t caps;
    uint32_t nformats;
    uint32_t formats[32];
@@ -380,9 +381,11 @@ struct drm_plane *mdp4_plane_init(struct drm_device *dev,
mdp4_plane->pipe = pipe_id;
    mdp4_plane->name = pipe_names[pipe_id];
+	mdp4_plane->caps = mdp4_pipe_caps(pipe_id);
-	mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats,
-			ARRAY_SIZE(mdp4_plane->formats));
+	mdp4_plane->nformats = mdp_get_formats(mdp4_plane->formats,
+			ARRAY_SIZE(mdp4_plane->formats),
+			!pipe_supports_yuv(mdp4_plane->caps));
type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
    ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
index 789b02f..ac1d58f 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
@@ -45,14 +45,20 @@ const struct mdp5_cfg_hw msm8x74_config = {
    .pipe_vig = {
    	.count = 3,
    	.base = { 0x01200, 0x01600, 0x01a00 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_CSC |
+				MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_rgb = {
    	.count = 3,
    	.base = { 0x01e00, 0x02200, 0x02600 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_dma = {
    	.count = 2,
    	.base = { 0x02a00, 0x02e00 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP,
    },
    .lm = {
    	.count = 5,
@@ -113,14 +119,20 @@ const struct mdp5_cfg_hw apq8084_config = {
    .pipe_vig = {
    	.count = 4,
    	.base = { 0x01200, 0x01600, 0x01a00, 0x01e00 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_CSC |
+				MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_rgb = {
    	.count = 4,
    	.base = { 0x02200, 0x02600, 0x02a00, 0x02e00 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_dma = {
    	.count = 2,
    	.base = { 0x03200, 0x03600 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP,
    },
    .lm = {
    	.count = 6,
@@ -174,14 +186,20 @@ const struct mdp5_cfg_hw msm8x16_config = {
    .pipe_vig = {
    	.count = 1,
    	.base = { 0x05000 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_CSC |
+				MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_rgb = {
    	.count = 2,
    	.base = { 0x15000, 0x17000 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_dma = {
    	.count = 1,
    	.base = { 0x25000 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP,
    },
    .lm = {
    	.count = 2, /* LM0 and LM3 */
@@ -233,16 +251,20 @@ const struct mdp5_cfg_hw msm8x94_config = {
    .pipe_vig = {
    	.count = 4,
    	.base = { 0x05000, 0x07000, 0x09000, 0x0b000 },
-		/* TODO: add decimation bit */
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_CSC |
+				MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_rgb = {
    	.count = 4,
    	.base = { 0x15000, 0x17000, 0x19000, 0x1b000 },
-		/* TODO: add decimation bit */
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP |
+				MDP_PIPE_CAP_SCALE | MDP_PIPE_CAP_DECIMATION,
    },
    .pipe_dma = {
    	.count = 2,
    	.base = { 0x25000, 0x27000 },
+		.caps = MDP_PIPE_CAP_HFLIP | MDP_PIPE_CAP_VFLIP,
    },
    .lm = {
    	.count = 6,
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
index 69349ab..72e9914 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
@@ -44,6 +44,11 @@ struct mdp5_lm_block {
    uint32_t nb_stages;		/* number of stages per blender */
 };
+struct mdp5_pipe_block {
+	MDP5_SUB_BLOCK_DEFINITION;
+	uint32_t caps;			/* pipe capabilities */
+};
+
 struct mdp5_ctl_block {
    MDP5_SUB_BLOCK_DEFINITION;
    uint32_t flush_hw_mask;		/* FLUSH register's hardware mask */
@@ -70,9 +75,9 @@ struct mdp5_cfg_hw {
    struct mdp5_sub_block mdp;
    struct mdp5_smp_block smp;
    struct mdp5_ctl_block ctl;
-	struct mdp5_sub_block pipe_vig;
-	struct mdp5_sub_block pipe_rgb;
-	struct mdp5_sub_block pipe_dma;
+	struct mdp5_pipe_block pipe_vig;
+	struct mdp5_pipe_block pipe_rgb;
+	struct mdp5_pipe_block pipe_dma;
    struct mdp5_lm_block  lm;
    struct mdp5_sub_block dspp;
    struct mdp5_sub_block ad;
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index af0059b..cbda41d 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -339,7 +339,7 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
    	struct drm_crtc *crtc;
plane = mdp5_plane_init(dev, crtcs[i], true,
-				hw_cfg->pipe_rgb.base[i]);
+			hw_cfg->pipe_rgb.base[i], hw_cfg->pipe_rgb.caps);
    	if (IS_ERR(plane)) {
    		ret = PTR_ERR(plane);
    		dev_err(dev->dev, "failed to construct plane for %s (%d)\n",
@@ -362,7 +362,7 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
    	struct drm_plane *plane;
plane = mdp5_plane_init(dev, pub_planes[i], false,
-				hw_cfg->pipe_vig.base[i]);
+			hw_cfg->pipe_vig.base[i], hw_cfg->pipe_vig.caps);
    	if (IS_ERR(plane)) {
    		ret = PTR_ERR(plane);
    		dev_err(dev->dev, "failed to construct %s plane: %d\n",
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
index 06af415..8542b30 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
@@ -196,34 +196,14 @@ void mdp5_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 int mdp5_irq_domain_init(struct mdp5_kms *mdp5_kms);
 void mdp5_irq_domain_fini(struct mdp5_kms *mdp5_kms);
-static inline bool pipe_supports_yuv(enum mdp5_pipe pipe)
-{
-	switch (pipe) {
-	case SSPP_VIG0:
-	case SSPP_VIG1:
-	case SSPP_VIG2:
-	case SSPP_VIG3:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static inline
-uint32_t mdp5_get_formats(enum mdp5_pipe pipe, uint32_t *pixel_formats,
-		uint32_t max_formats)
-{
-	return mdp_get_formats(pixel_formats, max_formats,
-				!pipe_supports_yuv(pipe));
-}
-
 void mdp5_plane_install_properties(struct drm_plane *plane,
    	struct drm_mode_object *obj);
 uint32_t mdp5_plane_get_flush(struct drm_plane *plane);
 void mdp5_plane_complete_flip(struct drm_plane *plane);
 enum mdp5_pipe mdp5_plane_pipe(struct drm_plane *plane);
 struct drm_plane *mdp5_plane_init(struct drm_device *dev,
-		enum mdp5_pipe pipe, bool private_plane, uint32_t reg_offset);
+		enum mdp5_pipe pipe, bool private_plane,
+		 uint32_t reg_offset,  uint32_t caps);
uint32_t mdp5_crtc_vblank(struct drm_crtc *crtc);
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
index 51bb944..1fbb17d 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
@@ -26,6 +26,7 @@ struct mdp5_plane {
spinlock_t pipe_lock;	/* protect REG_MDP5_PIPE_* registers */
    uint32_t reg_offset;
+	uint32_t caps;
uint32_t flush_mask;	/* used to commit pipe registers */
@@ -288,10 +289,33 @@ static int mdp5_plane_atomic_check(struct drm_plane *plane,
 {
    struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
    struct drm_plane_state *old_state = plane->state;
+	const struct mdp_format *format;
DBG("%s: check (%d -> %d)", mdp5_plane->name,
    		plane_enabled(old_state), plane_enabled(state));
+	if (plane_enabled(state)) {
+		format = to_mdp_format(msm_framebuffer_format(state->fb));
+		if (MDP_FORMAT_IS_YUV(format) &&
+			!pipe_supports_yuv(mdp5_plane->caps)) {
+			dev_err(plane->dev->dev,
+				"Pipe doesn't support YUV\n");
+
+			return -EINVAL;
+		}
+
+		if (!(mdp5_plane->caps & MDP_PIPE_CAP_SCALE) &&
+			(((state->src_w >> 16) != state->crtc_w) ||
+			((state->src_h >> 16) != state->crtc_h))) {
+			dev_err(plane->dev->dev,
+				"Pipe doesn't support scaling (%dx%d -> %dx%d)\n",
+				state->src_w >> 16, state->src_h >> 16,
+				state->crtc_w, state->crtc_h);
+
+			return -EINVAL;
+		}
+	}
+
    if (plane_enabled(state) && plane_enabled(old_state)) {
    	/* we cannot change SMP block configuration during scanout: */
    	bool full_modeset = false;
@@ -656,24 +680,28 @@ static int mdp5_plane_mode_set(struct drm_plane *plane,
    /* not using secure mode: */
    mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_ADDR_SW_STATUS(pipe), 0);
-	mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_X(pipe),
-			phasex_step[0]);
-	mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_Y(pipe),
-			phasey_step[0]);
-	mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_X(pipe),
-			phasex_step[1]);
-	mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_Y(pipe),
-			phasey_step[1]);
-	mdp5_write(mdp5_kms, REG_MDP5_PIPE_DECIMATION(pipe),
-			MDP5_PIPE_DECIMATION_VERT(vdecm) |
-			MDP5_PIPE_DECIMATION_HORZ(hdecm));
-	mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CONFIG(pipe), config);
-
-	if (MDP_FORMAT_IS_YUV(format))
-		csc_enable(mdp5_kms, pipe,
-				mdp_get_default_csc_cfg(CSC_YUV2RGB));
-	else
-		csc_disable(mdp5_kms, pipe);
+	if (mdp5_plane->caps & MDP_PIPE_CAP_SCALE) {
+		mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_X(pipe),
+				phasex_step[0]);
+		mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_Y(pipe),
+				phasey_step[0]);
+		mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_X(pipe),
+				phasex_step[1]);
+		mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_Y(pipe),
+				phasey_step[1]);
+		mdp5_write(mdp5_kms, REG_MDP5_PIPE_DECIMATION(pipe),
+				MDP5_PIPE_DECIMATION_VERT(vdecm) |
+				MDP5_PIPE_DECIMATION_HORZ(hdecm));
+		mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CONFIG(pipe), config);
+	}
+
+	if (mdp5_plane->caps & MDP_PIPE_CAP_CSC) {
+		if (MDP_FORMAT_IS_YUV(format))
+			csc_enable(mdp5_kms, pipe,
+					mdp_get_default_csc_cfg(CSC_YUV2RGB));
+		else
+			csc_disable(mdp5_kms, pipe);
+	}
set_scanout_locked(plane, fb);
@@ -710,7 +738,8 @@ uint32_t mdp5_plane_get_flush(struct drm_plane *plane)
/* initialize plane */
 struct drm_plane *mdp5_plane_init(struct drm_device *dev,
-		enum mdp5_pipe pipe, bool private_plane, uint32_t reg_offset)
+		enum mdp5_pipe pipe, bool private_plane, uint32_t reg_offset,
+		uint32_t caps)
 {
    struct drm_plane *plane = NULL;
    struct mdp5_plane *mdp5_plane;
@@ -727,9 +756,11 @@ struct drm_plane *mdp5_plane_init(struct drm_device *dev,
mdp5_plane->pipe = pipe;
    mdp5_plane->name = pipe2name(pipe);
+	mdp5_plane->caps = caps;
-	mdp5_plane->nformats = mdp5_get_formats(pipe, mdp5_plane->formats,
-			ARRAY_SIZE(mdp5_plane->formats));
+	mdp5_plane->nformats = mdp_get_formats(mdp5_plane->formats,
+		ARRAY_SIZE(mdp5_plane->formats),
+		!pipe_supports_yuv(mdp5_plane->caps));
mdp5_plane->flush_mask = mdp_ctl_flush_mask_pipe(pipe);
    mdp5_plane->reg_offset = reg_offset;
diff --git a/drivers/gpu/drm/msm/mdp/mdp_kms.h b/drivers/gpu/drm/msm/mdp/mdp_kms.h
index 2d3428c..3db25df 100644
--- a/drivers/gpu/drm/msm/mdp/mdp_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp_kms.h
@@ -97,6 +97,19 @@ struct mdp_format {
 uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats, bool rgb_only);
 const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format);
+/* MDP pipe capabilities */
+#define MDP_PIPE_CAP_HFLIP			BIT(0)
+#define MDP_PIPE_CAP_VFLIP			BIT(1)
+#define MDP_PIPE_CAP_SCALE			BIT(2)
+#define MDP_PIPE_CAP_CSC			BIT(3)
+#define MDP_PIPE_CAP_DECIMATION			BIT(4)
+
+static inline bool pipe_supports_yuv(uint32_t pipe_caps)
+{
+	return (pipe_caps & MDP_PIPE_CAP_SCALE) &&
+		(pipe_caps & MDP_PIPE_CAP_CSC);
+}
+
 enum csc_type {
    CSC_RGB2RGB = 0,
    CSC_YUV2RGB,
-- 
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[PATCH] drm/msm/mdp: Add capabilities to MDP planes(V2)