OMAP: DSS2: Introduce omap_channel as an omap_dss_device parameter, add new overlay manager.

A panel connects to one of the overlay managers of DSS through some interface block.
On OMAP4, specifying the type of the display is not sufficient to conclude which manager
the panel should be connected to.
Hence, a new member 'channel' is introduced in omap_dss_device structure to determine
which manager the panel uses. The dss_recheck_connections() called in dss_driver_probe()
uses this channel parameter to set the correct manager to the corresponding omap_dss_device.

The channel parameter is used only once to ensure the correct managers are set for each
panel. The parameter dssdev->manager->id will take care of ensuring that the panel and
then the interface driver configures the correct DISPC channel.

Also, add a new Overlay Manager in manager.c, make other changes needed for LCD2 channel.

Signed-off-by: Sumit Semwal <sumit.semwal@ti.com>
Signed-off-by: Mukund Mittal <mmittal@ti.com>
Signed-off-by: Samreen <samreen@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

1 files changed, 48 insertions, 29 deletions

diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index 873b33469060..172d4e697309 100644
--- a/drivers/video/omap2/dss/manager.c
+++ b/drivers/video/omap2/dss/manager.c
@@ -513,11 +513,14 @@ static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr)
         unsigned long timeout = msecs_to_jiffies(500);
         u32 irq;
 
-        if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC)
+        if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC) {
                 irq = DISPC_IRQ_EVSYNC_ODD;
-        else
-                irq = DISPC_IRQ_VSYNC;
-
+        } else {
+                if (mgr->id == OMAP_DSS_CHANNEL_LCD)
+                        irq = DISPC_IRQ_VSYNC;
+                else
+                        irq = DISPC_IRQ_VSYNC2;
+        }
         return omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
 }
 
@@ -525,7 +528,6 @@ static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
 {
         unsigned long timeout = msecs_to_jiffies(500);
         struct manager_cache_data *mc;
-        enum omap_channel channel;
         u32 irq;
         int r;
         int i;
@@ -536,7 +538,6 @@ static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
 
         if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
                 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
-                channel = OMAP_DSS_CHANNEL_DIGIT;
         } else {
                 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
                         enum omap_dss_update_mode mode;
@@ -544,11 +545,14 @@ static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
                         if (mode != OMAP_DSS_UPDATE_AUTO)
                                 return 0;
 
-                        irq = DISPC_IRQ_FRAMEDONE;
+                        irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
+                                DISPC_IRQ_FRAMEDONE
+                                : DISPC_IRQ_FRAMEDONE2;
                 } else {
-                        irq = DISPC_IRQ_VSYNC;
+                        irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
+                                DISPC_IRQ_VSYNC
+                                : DISPC_IRQ_VSYNC2;
                 }
-                channel = OMAP_DSS_CHANNEL_LCD;
         }
 
         mc = &dss_cache.manager_cache[mgr->id];
@@ -595,7 +599,6 @@ static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
 int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
 {
         unsigned long timeout = msecs_to_jiffies(500);
-        enum omap_channel channel;
         struct overlay_cache_data *oc;
         struct omap_dss_device *dssdev;
         u32 irq;
@@ -612,7 +615,6 @@ int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
 
         if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
                 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
-                channel = OMAP_DSS_CHANNEL_DIGIT;
         } else {
                 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
                         enum omap_dss_update_mode mode;
@@ -620,11 +622,14 @@ int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
                         if (mode != OMAP_DSS_UPDATE_AUTO)
                                 return 0;
 
-                        irq = DISPC_IRQ_FRAMEDONE;
+                        irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
+                                DISPC_IRQ_FRAMEDONE
+                                : DISPC_IRQ_FRAMEDONE2;
                 } else {
-                        irq = DISPC_IRQ_VSYNC;
+                        irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
+                                DISPC_IRQ_VSYNC
+                                : DISPC_IRQ_VSYNC2;
                 }
-                channel = OMAP_DSS_CHANNEL_LCD;
         }
 
         oc = &dss_cache.overlay_cache[ovl->id];
@@ -844,7 +849,8 @@ static int configure_overlay(enum omap_plane plane)
                         c->rotation,
                         c->mirror,
                         c->global_alpha,
-                        c->pre_mult_alpha);
+                        c->pre_mult_alpha,
+                        c->channel);
 
         if (r) {
                 /* this shouldn't happen */
@@ -896,10 +902,10 @@ static int configure_dispc(void)
         r = 0;
         busy = false;
 
-        mgr_busy[0] = dispc_go_busy(0);
-        mgr_busy[1] = dispc_go_busy(1);
-        mgr_go[0] = false;
-        mgr_go[1] = false;
+        for (i = 0; i < num_mgrs; i++) {
+                mgr_busy[i] = dispc_go_busy(i);
+                mgr_go[i] = false;
+        }
 
         /* Commit overlay settings */
         for (i = 0; i < num_ovls; ++i) {
@@ -1158,9 +1164,10 @@ static void dss_apply_irq_handler(void *data, u32 mask)
         const int num_mgrs = dss_feat_get_num_mgrs();
         int i, r;
         bool mgr_busy[MAX_DSS_MANAGERS];
+        u32 irq_mask;
 
-        mgr_busy[0] = dispc_go_busy(0);
-        mgr_busy[1] = dispc_go_busy(1);
+        for (i = 0; i < num_mgrs; i++)
+                mgr_busy[i] = dispc_go_busy(i);
 
         spin_lock(&dss_cache.lock);
 
@@ -1181,8 +1188,8 @@ static void dss_apply_irq_handler(void *data, u32 mask)
                 goto end;
 
         /* re-read busy flags */
-        mgr_busy[0] = dispc_go_busy(0);
-        mgr_busy[1] = dispc_go_busy(1);
+        for (i = 0; i < num_mgrs; i++)
+                mgr_busy[i] = dispc_go_busy(i);
 
         /* keep running as long as there are busy managers, so that
          * we can collect overlay-applied information */
@@ -1191,9 +1198,12 @@ static void dss_apply_irq_handler(void *data, u32 mask)
                         goto end;
         }
 
-        omap_dispc_unregister_isr(dss_apply_irq_handler, NULL,
-                        DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
-                        DISPC_IRQ_EVSYNC_EVEN);
+        irq_mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
+                        DISPC_IRQ_EVSYNC_EVEN;
+        if (dss_has_feature(FEAT_MGR_LCD2))
+                irq_mask |= DISPC_IRQ_VSYNC2;
+
+        omap_dispc_unregister_isr(dss_apply_irq_handler, NULL, irq_mask);
         dss_cache.irq_enabled = false;
 
 end:
@@ -1386,9 +1396,14 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
         r = 0;
         dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
         if (!dss_cache.irq_enabled) {
-                r = omap_dispc_register_isr(dss_apply_irq_handler, NULL,
-                                DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
-                                DISPC_IRQ_EVSYNC_EVEN);
+                u32 mask;
+
+                mask = DISPC_IRQ_VSYNC  | DISPC_IRQ_EVSYNC_ODD |
+                        DISPC_IRQ_EVSYNC_EVEN;
+                if (dss_has_feature(FEAT_MGR_LCD2))
+                        mask |= DISPC_IRQ_VSYNC2;
+
+                r = omap_dispc_register_isr(dss_apply_irq_handler, NULL, mask);
                 dss_cache.irq_enabled = true;
         }
         configure_dispc();
@@ -1480,6 +1495,10 @@ int dss_init_overlay_managers(struct platform_device *pdev)
                         mgr->name = "tv";
                         mgr->id = OMAP_DSS_CHANNEL_DIGIT;
                         break;
+                case 2:
+                        mgr->name = "lcd2";
+                        mgr->id = OMAP_DSS_CHANNEL_LCD2;
+                        break;
                 }
 
                 mgr->set_device = &omap_dss_set_device;