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, 21 insertions, 0 deletions

diff --git a/drivers/video/mb862xx/mb862xx_reg.h b/drivers/video/mb862xx/mb862xx_reg.h
index 737fc011caff..5784b018f15d 100644
--- a/drivers/video/mb862xx/mb862xx_reg.h
+++ b/drivers/video/mb862xx/mb862xx_reg.h
@@ -80,6 +80,27 @@
 
 #define GC_DISP_REFCLK_400      400
 
+/* I2C */
+#define GC_I2C_BSR              0x00000000      /* BSR */
+#define GC_I2C_BCR              0x00000004      /* BCR */
+#define GC_I2C_CCR              0x00000008      /* CCR */
+#define GC_I2C_ADR              0x0000000C      /* ADR */
+#define GC_I2C_DAR              0x00000010      /* DAR */
+
+#define I2C_DISABLE             0x00000000
+#define I2C_STOP                0x00000000
+#define I2C_START               0x00000010
+#define I2C_REPEATED_START      0x00000030
+#define I2C_CLOCK_AND_ENABLE    0x0000003f
+#define I2C_READY               0x01
+#define I2C_INT                 0x01
+#define I2C_INTE                0x02
+#define I2C_ACK                 0x08
+#define I2C_BER                 0x80
+#define I2C_BEIE                0x40
+#define I2C_TRX                 0x80
+#define I2C_LRB                 0x10
+
 /* Carmine specific */
 #define MB86297_DRAW_BASE               0x00020000
 #define MB86297_DISP0_BASE              0x00100000