power: regulator: s2mps11: add a regulator driver for s2mps11

exynos5422 has the s2mps11 PMIC.
s2mps11 pmic has the 10-BUCK and 38-LDO regulators.
Each IP and devices in exynos5422 can be controlled by each regulators.
This patch is support for s2mps11 regulator driver.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>

include/power/s2mps11.h

@@ -106,4 +106,59 @@ enum s2mps11_reg {
 
 #define S2MPS11_LDO26_ENABLE	0xec
 
+#define S2MPS11_LDO_NUM		26
+#define S2MPS11_BUCK_NUM	10
+
+/* Driver name */
+#define S2MPS11_BUCK_DRIVER	"s2mps11_buck"
+#define S2MPS11_OF_BUCK_PREFIX	"BUCK"
+#define S2MPS11_LDO_DRIVER	"s2mps11_ldo"
+#define S2MPS11_OF_LDO_PREFIX	"LDO"
+
+/* BUCK */
+#define S2MPS11_BUCK_VOLT_MASK	0xff
+#define S2MPS11_BUCK9_VOLT_MASK	0x1f
+
+#define S2MPS11_BUCK_LSTEP	6250
+#define S2MPS11_BUCK_HSTEP	12500
+#define S2MPS11_BUCK9_STEP	25000
+
+#define S2MPS11_BUCK_UV_MIN	600000
+#define S2MPS11_BUCK_UV_HMIN	750000
+#define S2MPS11_BUCK9_UV_MIN	1400000
+
+#define S2MPS11_BUCK_VOLT_MAX_HEX	0xA0
+#define S2MPS11_BUCK5_VOLT_MAX_HEX	0xDF
+#define S2MPS11_BUCK7_8_10_VOLT_MAX_HEX	0xDC
+#define S2MPS11_BUCK9_VOLT_MAX_HEX	0x5F
+
+#define S2MPS11_BUCK_MODE_SHIFT		6
+#define S2MPS11_BUCK_MODE_MASK		(0x3)
+#define S2MPS11_BUCK_MODE_OFF		(0x0 << 6)
+#define S2MPS11_BUCK_MODE_STANDBY	(0x1 << 6)
+#define S2MPS11_BUCK_MODE_ON		(0x3 << 6)
+
+/* LDO */
+#define S2MPS11_LDO_VOLT_MASK		0x3F
+#define S2MPS11_LDO_VOLT_MAX_HEX	0x3F
+
+#define S2MPS11_LDO_STEP	25000
+#define S2MPS11_LDO_UV_MIN	800000
+
+#define S2MPS11_LDO_MODE_MASK		0x3
+#define S2MPS11_LDO_MODE_SHIFT		6
+
+#define S2MPS11_LDO_MODE_OFF		(0x0 << 6)
+#define S2MPS11_LDO_MODE_STANDBY	(0x1 << 6)
+#define S2MPS11_LDO_MODE_STANDBY_LPM	(0x2 << 6)
+#define S2MPS11_LDO_MODE_ON		(0x3 << 6)
+
+enum {
+	OP_OFF = 0,
+	OP_LPM,
+	OP_STANDBY,
+	OP_STANDBY_LPM,
+	OP_ON,
+};
+
 #endif