[PATCHv5 3/8] i2c: mv64xxx: Add Allwinner sun4i compatible

[Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>]

Add the compatible string for the Allwinner A10 i2c controller and the
associated register layout.

Signed-off-by: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
 drivers/i2c/busses/Kconfig       |  3 ++-
 drivers/i2c/busses/i2c-mv64xxx.c | 11 +++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 631736e..5dc4148 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -507,10 +507,11 @@ config I2C_MPC
 
 config I2C_MV64XXX
 	tristate "Marvell mv64xxx I2C Controller"
-	depends on (MV64X60 || PLAT_ORION)
+	depends on (MV64X60 || PLAT_ORION || ARCH_SUNXI)
 	help
 	  If you say yes to this option, support will be included for the
 	  built-in I2C interface on the Marvell 64xxx line of host bridges.
+	  This driver is also used for Allwinner SoCs I2C controllers.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-mv64xxx.
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 7ba9bac..7a0e39b 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -129,6 +129,16 @@ static struct mv64xxx_i2c_regs mv64xxx_i2c_regs_mv64xxx = {
 	.soft_reset	= 0x1c,
 };
 
+static struct mv64xxx_i2c_regs mv64xxx_i2c_regs_sun4i = {
+	.addr		= 0x00,
+	.ext_addr	= 0x04,
+	.data		= 0x08,
+	.control	= 0x0c,
+	.status		= 0x10,
+	.clock		= 0x14,
+	.soft_reset	= 0x18,
+};
+
 static void
 mv64xxx_i2c_prepare_for_io(struct mv64xxx_i2c_data *drv_data,
 	struct i2c_msg *msg)
@@ -509,6 +519,7 @@ static const struct i2c_algorithm mv64xxx_i2c_algo = {
  *****************************************************************************
  */
 static const struct of_device_id mv64xxx_i2c_of_match_table[] = {
+	{ .compatible = "allwinner,sun4i-i2c", .data = &mv64xxx_i2c_regs_sun4i},
 	{ .compatible = "marvell,mv64xxx-i2c", .data = &mv64xxx_i2c_regs_mv64xxx},
 	{}
 };
-- 
1.8.3