drm/omap: add dispc_ops

We want to change the dispc API from plain functions to a struct with
functions pointers, so that omapdrm can call either omapdss or omapdss6
depending on the platform.

This patch adds 'struct dispc_ops' and adds functions to omapdss-base
to set and get the ops.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

2 files changed, 63 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
index 03942097b9f1..7dd447e6c4d7 100644
--- a/drivers/gpu/drm/omapdrm/dss/base.c
+++ b/drivers/gpu/drm/omapdrm/dss/base.c
@@ -2,6 +2,7 @@
 #include <linux/module.h>
 
 static bool dss_initialized;
+static const struct dispc_ops *ops;
 
 void omapdss_set_is_initialized(bool set)
 {
@@ -15,6 +16,18 @@ bool omapdss_is_initialized(void)
 }
 EXPORT_SYMBOL(omapdss_is_initialized);
 
+void dispc_set_ops(const struct dispc_ops *o)
+{
+        ops = o;
+}
+EXPORT_SYMBOL(dispc_set_ops);
+
+const struct dispc_ops *dispc_get_ops(void)
+{
+        return ops;
+}
+EXPORT_SYMBOL(dispc_get_ops);
+
 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
 MODULE_DESCRIPTION("OMAP Display Subsystem Base");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 4d3999c18fa2..a7c2981fa322 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -929,4 +929,54 @@ int dss_mgr_register_framedone_handler(enum omap_channel channel,
 void dss_mgr_unregister_framedone_handler(enum omap_channel channel,
                 void (*handler)(void *), void *data);
 
+/* dispc ops */
+
+struct dispc_ops {
+        u32 (*read_irqstatus)(void);
+        void (*clear_irqstatus)(u32 mask);
+        u32 (*read_irqenable)(void);
+        void (*write_irqenable)(u32 mask);
+
+        int (*request_irq)(irq_handler_t handler, void *dev_id);
+        void (*free_irq)(void *dev_id);
+
+        int (*runtime_get)(void);
+        void (*runtime_put)(void);
+
+        int (*get_num_ovls)(void);
+        int (*get_num_mgrs)(void);
+
+        void (*mgr_enable)(enum omap_channel channel, bool enable);
+        bool (*mgr_is_enabled)(enum omap_channel channel);
+        u32 (*mgr_get_vsync_irq)(enum omap_channel channel);
+        u32 (*mgr_get_framedone_irq)(enum omap_channel channel);
+        u32 (*mgr_get_sync_lost_irq)(enum omap_channel channel);
+        bool (*mgr_go_busy)(enum omap_channel channel);
+        void (*mgr_go)(enum omap_channel channel);
+        void (*mgr_set_lcd_config)(enum omap_channel channel,
+                        const struct dss_lcd_mgr_config *config);
+        void (*mgr_set_timings)(enum omap_channel channel,
+                        const struct videomode *vm);
+        void (*mgr_setup)(enum omap_channel channel,
+                        const struct omap_overlay_manager_info *info);
+        enum omap_dss_output_id (*mgr_get_supported_outputs)(enum omap_channel channel);
+        u32 (*mgr_gamma_size)(enum omap_channel channel);
+        void (*mgr_set_gamma)(enum omap_channel channel,
+                const struct drm_color_lut *lut,
+                unsigned int length);
+
+        int (*ovl_enable)(enum omap_plane plane, bool enable);
+        bool (*ovl_enabled)(enum omap_plane plane);
+        void (*ovl_set_channel_out)(enum omap_plane plane,
+                        enum omap_channel channel);
+        int (*ovl_setup)(enum omap_plane plane, const struct omap_overlay_info *oi,
+                        bool replication, const struct videomode *vm,
+                        bool mem_to_mem);
+
+        enum omap_color_mode (*ovl_get_color_modes)(enum omap_plane plane);
+};
+
+void dispc_set_ops(const struct dispc_ops *o);
+const struct dispc_ops *dispc_get_ops(void);
+
 #endif /* __OMAP_DRM_DSS_H */