drm/msm/mdp5: describe LM instances in mdp5_cfg

The number of Layer Mixers and the downstream blocks (DSPPs and PPs)
connected to each LM can vary with different MDP5 revisions. These
parameters are also static.

Keep the per instance LM data in mdp5_cfg. This will avoid the need
to have macros which identify PP id or DSPP id the LM is connected
to. We don't configure DSPPs at the moment, but keeping the DSPP
instance # here might come handy later.

Also add a 'caps' field that identifies features supported by a
LM instance. Introduce the caps MDP_LM_CAP_DISPLAY and MDP_LM_CAP_WB
that identify whether a LM instance can be used for display or
writeback.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c

@@ -70,6 +70,18 @@ const struct mdp5_cfg_hw msm8x74v1_config = {
 	.lm = {
 		.count = 5,
 		.base = { 0x03100, 0x03500, 0x03900, 0x03d00, 0x04100 },
+		.instances = {
+				{ .id = 0, .pp = 0, .dspp = 0,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 1, .pp = 1, .dspp = 1,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 2, .pp = 2, .dspp = 2,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 3, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB },
+				{ .id = 4, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB },
+			     },
 		.nb_stages = 5,
 	},
 	.dspp = {
@@ -134,6 +146,18 @@ const struct mdp5_cfg_hw msm8x74v2_config = {
 	.lm = {
 		.count = 5,
 		.base = { 0x03100, 0x03500, 0x03900, 0x03d00, 0x04100 },
+		.instances = {
+				{ .id = 0, .pp = 0, .dspp = 0,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 1, .pp = 1, .dspp = 1,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 2, .pp = 2, .dspp = 2,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 3, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+				{ .id = 4, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+			     },
 		.nb_stages = 5,
 		.max_width = 2048,
 		.max_height = 0xFFFF,
@@ -211,6 +235,20 @@ const struct mdp5_cfg_hw apq8084_config = {
 	.lm = {
 		.count = 6,
 		.base = { 0x03900, 0x03d00, 0x04100, 0x04500, 0x04900, 0x04d00 },
+		.instances = {
+				{ .id = 0, .pp = 0, .dspp = 0,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 1, .pp = 1, .dspp = 1,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 2, .pp = 2, .dspp = 2,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 3, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+				{ .id = 4, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+				{ .id = 5, .pp = 3, .dspp = 3,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+			     },
 		.nb_stages = 5,
 		.max_width = 2048,
 		.max_height = 0xFFFF,
@@ -282,6 +320,12 @@ const struct mdp5_cfg_hw msm8x16_config = {
 	.lm = {
 		.count = 2, /* LM0 and LM3 */
 		.base = { 0x44000, 0x47000 },
+		.instances = {
+				{ .id = 0, .pp = 0, .dspp = 0,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 3, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB },
+			     },
 		.nb_stages = 8,
 		.max_width = 2048,
 		.max_height = 0xFFFF,
@@ -350,6 +394,20 @@ const struct mdp5_cfg_hw msm8x94_config = {
 	.lm = {
 		.count = 6,
 		.base = { 0x44000, 0x45000, 0x46000, 0x47000, 0x48000, 0x49000 },
+		.instances = {
+				{ .id = 0, .pp = 0, .dspp = 0,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 1, .pp = 1, .dspp = 1,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 2, .pp = 2, .dspp = 2,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 3, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+				{ .id = 4, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+				{ .id = 5, .pp = 3, .dspp = 3,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+			     },
 		.nb_stages = 8,
 		.max_width = 2048,
 		.max_height = 0xFFFF,
@@ -434,6 +492,20 @@ const struct mdp5_cfg_hw msm8x96_config = {
 	.lm = {
 		.count = 6,
 		.base = { 0x44000, 0x45000, 0x46000, 0x47000, 0x48000, 0x49000 },
+		.instances = {
+				{ .id = 0, .pp = 0, .dspp = 0,
+				  .caps = MDP_LM_CAP_DISPLAY },
+				{ .id = 1, .pp = 1, .dspp = 1,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+				{ .id = 2, .pp = 2, .dspp = -1,
+				  .caps = MDP_LM_CAP_DISPLAY },
+				{ .id = 3, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+				{ .id = 4, .pp = -1, .dspp = -1,
+				  .caps = MDP_LM_CAP_WB, },
+				{ .id = 5, .pp = 3, .dspp = -1,
+				  .caps = MDP_LM_CAP_DISPLAY, },
+			     },
 		.nb_stages = 8,
 		.max_width = 2560,
 		.max_height = 0xFFFF,

drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h

@@ -39,8 +39,16 @@ struct mdp5_sub_block {
 	MDP5_SUB_BLOCK_DEFINITION;
 };
 
+struct mdp5_lm_instance {
+	int id;
+	int pp;
+	int dspp;
+	uint32_t caps;
+};
+
 struct mdp5_lm_block {
 	MDP5_SUB_BLOCK_DEFINITION;
+	struct mdp5_lm_instance instances[MAX_BASES];
 	uint32_t nb_stages;		/* number of stages per blender */
 	uint32_t max_width;		/* Maximum output resolution */
 	uint32_t max_height;

drivers/gpu/drm/msm/mdp/mdp_kms.h

@@ -114,6 +114,10 @@ const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format);
 #define MDP_PIPE_CAP_SW_PIX_EXT			BIT(5)
 #define MDP_PIPE_CAP_CURSOR			BIT(6)
 
+/* MDP layer mixer caps */
+#define MDP_LM_CAP_DISPLAY			BIT(0)
+#define MDP_LM_CAP_WB				BIT(1)
+
 static inline bool pipe_supports_yuv(uint32_t pipe_caps)
 {
 	return (pipe_caps & MDP_PIPE_CAP_SCALE) &&