drm/msm/mdp5: Get SMP client list from mdp5_cfg

SMP blocks are configured for specific client IDs (ports).
These client IDs can be different from one chip to another for a
given pipe.

e.g.: DMA0 pipe fetch Y component is connected to:
 - port #10 for MDP5 v1.3
 - port #4 for MDP5 v1.6

In order to be compatible for upcoming versions of MDP5, the
client ID list is passed through the MDP5 config module rather
than using a list of hard-coded enum values.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

3 files changed, 41 insertions, 24 deletions

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
index 4c570e646b74..9626951bb896 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
@@ -31,6 +31,11 @@ const struct mdp5_cfg_hw msm8x74_config = {
         .smp = {
                 .mmb_count = 22,
                 .mmb_size = 4096,
+                .clients = {
+                        [SSPP_VIG0] =  1, [SSPP_VIG1] =  4, [SSPP_VIG2] =  7,
+                        [SSPP_DMA0] = 10, [SSPP_DMA1] = 13,
+                        [SSPP_RGB0] = 16, [SSPP_RGB1] = 17, [SSPP_RGB2] = 18,
+                },
         },
         .ctl = {
                 .count = 5,
@@ -86,11 +91,18 @@ const struct mdp5_cfg_hw apq8084_config = {
         .smp = {
                 .mmb_count = 44,
                 .mmb_size = 8192,
+                .clients = {
+                        [SSPP_VIG0] =  1, [SSPP_VIG1] =  4,
+                        [SSPP_VIG2] =  7, [SSPP_VIG3] = 19,
+                        [SSPP_DMA0] = 10, [SSPP_DMA1] = 13,
+                        [SSPP_RGB0] = 16, [SSPP_RGB1] = 17,
+                        [SSPP_RGB2] = 18, [SSPP_RGB3] = 22,
+                },
                 .reserved_state[0] = GENMASK(7, 0),     /* first 8 MMBs */
-                .reserved[CID_RGB0] = 2,
-                .reserved[CID_RGB1] = 2,
-                .reserved[CID_RGB2] = 2,
-                .reserved[CID_RGB3] = 2,
+                .reserved = {
+                        /* Two SMP blocks are statically tied to RGB pipes: */
+                        [16] = 2, [17] = 2, [18] = 2, [22] = 2,
+                },
         },
         .ctl = {
                 .count = 5,
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
index 11f3e869e880..3a551b0892d8 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.h
@@ -52,6 +52,7 @@ struct mdp5_ctl_block {
 struct mdp5_smp_block {
         int mmb_count;                  /* number of SMP MMBs */
         int mmb_size;                   /* MMB: size in bytes */
+        uint32_t clients[MAX_CLIENTS];  /* SMP port allocation /pipe */
         mdp5_smp_state_t reserved_state;/* SMP MMBs statically allocated */
         int reserved[MAX_CLIENTS];      /* # of MMBs allocated per client */
 };
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c
index 361c064ba44c..16702aecf0df 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_smp.c
@@ -74,7 +74,7 @@ struct mdp5_smp {
         spinlock_t state_lock;
         mdp5_smp_state_t state; /* to track smp allocation amongst pipes: */
 
-        struct mdp5_client_smp_state client_state[CID_MAX];
+        struct mdp5_client_smp_state client_state[MAX_CLIENTS];
 };
 
 static inline
@@ -85,27 +85,31 @@ struct mdp5_kms *get_kms(struct mdp5_smp *smp)
         return to_mdp5_kms(to_mdp_kms(priv->kms));
 }
 
-static inline enum mdp5_client_id pipe2client(enum mdp5_pipe pipe, int plane)
+static inline u32 pipe2client(enum mdp5_pipe pipe, int plane)
 {
-        WARN_ON(plane >= pipe2nclients(pipe));
-        switch (pipe) {
-        case SSPP_VIG0: return CID_VIG0_Y + plane;
-        case SSPP_VIG1: return CID_VIG1_Y + plane;
-        case SSPP_VIG2: return CID_VIG2_Y + plane;
-        case SSPP_RGB0: return CID_RGB0;
-        case SSPP_RGB1: return CID_RGB1;
-        case SSPP_RGB2: return CID_RGB2;
-        case SSPP_DMA0: return CID_DMA0_Y + plane;
-        case SSPP_DMA1: return CID_DMA1_Y + plane;
-        case SSPP_VIG3: return CID_VIG3_Y + plane;
-        case SSPP_RGB3: return CID_RGB3;
-        default:        return CID_UNUSED;
-        }
+#define CID_UNUSED      0
+
+        if (WARN_ON(plane >= pipe2nclients(pipe)))
+                return CID_UNUSED;
+
+        /*
+         * Note on SMP clients:
+         * For ViG pipes, fetch Y/Cr/Cb-components clients are always
+         * consecutive, and in that order.
+         *
+         * e.g.:
+         * if mdp5_cfg->smp.clients[SSPP_VIG0] = N,
+         *      Y  plane's client ID is N
+         *      Cr plane's client ID is N + 1
+         *      Cb plane's client ID is N + 2
+         */
+
+        return mdp5_cfg->smp.clients[pipe] + plane;
 }
 
 /* step #1: update # of blocks pending for the client: */
 static int smp_request_block(struct mdp5_smp *smp,
-                enum mdp5_client_id cid, int nblks)
+                u32 cid, int nblks)
 {
         struct mdp5_kms *mdp5_kms = get_kms(smp);
         const struct mdp5_cfg_hw *hw_cfg;
@@ -227,7 +231,7 @@ void mdp5_smp_release(struct mdp5_smp *smp, enum mdp5_pipe pipe)
 }
 
 static void update_smp_state(struct mdp5_smp *smp,
-                enum mdp5_client_id cid, mdp5_smp_state_t *assigned)
+                u32 cid, mdp5_smp_state_t *assigned)
 {
         struct mdp5_kms *mdp5_kms = get_kms(smp);
         int cnt = smp->blk_cnt;
@@ -267,7 +271,7 @@ void mdp5_smp_configure(struct mdp5_smp *smp, enum mdp5_pipe pipe)
         int i;
 
         for (i = 0; i < pipe2nclients(pipe); i++) {
-                enum mdp5_client_id cid = pipe2client(pipe, i);
+                u32 cid = pipe2client(pipe, i);
                 struct mdp5_client_smp_state *ps = &smp->client_state[cid];
 
                 bitmap_or(assigned, ps->inuse, ps->pending, cnt);
@@ -283,7 +287,7 @@ void mdp5_smp_commit(struct mdp5_smp *smp, enum mdp5_pipe pipe)
         int i;
 
         for (i = 0; i < pipe2nclients(pipe); i++) {
-                enum mdp5_client_id cid = pipe2client(pipe, i);
+                u32 cid = pipe2client(pipe, i);
                 struct mdp5_client_smp_state *ps = &smp->client_state[cid];
 
                 /*