video: mb862xx: add support for controller's I2C bus adapter

Add adapter driver for I2C adapter in Coral-P(A)/Lime GDCs.
So we can easily access devices on controller's I2C bus using
i2c-dev interface.

Signed-off-by: Anatolij Gustschin <agust@denx.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/video/mb862xx/mb862xxfb.h b/drivers/video/mb862xx/mb862xxfb.h
index d7e7cb76bbf2..d5dd7d9ec0cd 100644
--- a/drivers/video/mb862xx/mb862xxfb.h
+++ b/drivers/video/mb862xx/mb862xxfb.h
@@ -57,11 +57,20 @@ struct mb862xxfb_par {
         unsigned int            refclk;         /* disp. reference clock */
         struct mb862xx_gc_mode  *gc_mode;       /* GDC mode init data */
         int                     pre_init;       /* don't init display if 1 */
+        struct i2c_adapter      *adap;          /* GDC I2C bus adapter */
+        int                     i2c_rs;
 
         u32                     pseudo_palette[16];
 };
 
 extern void mb862xxfb_init_accel(struct fb_info *info, int xres);
+#ifdef CONFIG_FB_MB862XX_I2C
+extern int mb862xx_i2c_init(struct mb862xxfb_par *par);
+extern void mb862xx_i2c_exit(struct mb862xxfb_par *par);
+#else
+static inline int mb862xx_i2c_init(struct mb862xxfb_par *par) { return 0; }
+static inline void mb862xx_i2c_exit(struct mb862xxfb_par *par) { }
+#endif
 
 #if defined(CONFIG_FB_MB862XX_LIME) && defined(CONFIG_FB_MB862XX_PCI_GDC)
 #error  "Select Lime GDC or CoralP/Carmine support, but not both together"