mfd: max77693: Improve support for the flash cell

This patch improves support for the flash cell of
max77693 mfd by adding relevant of_compatible field
and a structure for caching related platform data.
Added are also FLASH registers related macro definitions.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

3 files changed, 103 insertions, 1 deletions

diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c
index 249c139ef04a..cf008f45968c 100644
--- a/drivers/mfd/max77693.c
+++ b/drivers/mfd/max77693.c
@@ -44,9 +44,12 @@
 static const struct mfd_cell max77693_devs[] = {
         { .name = "max77693-pmic", },
         { .name = "max77693-charger", },
-        { .name = "max77693-flash", },
         { .name = "max77693-muic", },
         { .name = "max77693-haptic", },
+        {
+                .name = "max77693-flash",
+                .of_compatible = "maxim,max77693-flash",
+        },
 };
 
 static const struct regmap_config max77693_regmap_config = {
diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h
index 615f12141854..de063773f3b1 100644
--- a/include/linux/mfd/max77693-private.h
+++ b/include/linux/mfd/max77693-private.h
@@ -85,6 +85,65 @@ enum max77693_pmic_reg {
         MAX77693_PMIC_REG_END,
 };
 
+/* MAX77693 ITORCH register */
+#define TORCH_IOUT1_SHIFT       0
+#define TORCH_IOUT2_SHIFT       4
+#define TORCH_IOUT_MIN          15625
+#define TORCH_IOUT_MAX          250000
+#define TORCH_IOUT_STEP         15625
+
+/* MAX77693 IFLASH1 and IFLASH2 registers */
+#define FLASH_IOUT_MIN          15625
+#define FLASH_IOUT_MAX_1LED     1000000
+#define FLASH_IOUT_MAX_2LEDS    625000
+#define FLASH_IOUT_STEP         15625
+
+/* MAX77693 TORCH_TIMER register */
+#define TORCH_TMR_NO_TIMER      0x40
+#define TORCH_TIMEOUT_MIN       262000
+#define TORCH_TIMEOUT_MAX       15728000
+
+/* MAX77693 FLASH_TIMER register */
+#define FLASH_TMR_LEVEL         0x80
+#define FLASH_TIMEOUT_MIN       62500
+#define FLASH_TIMEOUT_MAX       1000000
+#define FLASH_TIMEOUT_STEP      62500
+
+/* MAX77693 FLASH_EN register */
+#define FLASH_EN_OFF            0x0
+#define FLASH_EN_FLASH          0x1
+#define FLASH_EN_TORCH          0x2
+#define FLASH_EN_ON             0x3
+#define FLASH_EN_SHIFT(x)       (6 - ((x) - 1) * 2)
+#define TORCH_EN_SHIFT(x)       (2 - ((x) - 1) * 2)
+
+/* MAX77693 MAX_FLASH1 register */
+#define MAX_FLASH1_MAX_FL_EN    0x80
+#define MAX_FLASH1_VSYS_MIN     2400
+#define MAX_FLASH1_VSYS_MAX     3400
+#define MAX_FLASH1_VSYS_STEP    33
+
+/* MAX77693 VOUT_CNTL register */
+#define FLASH_BOOST_FIXED       0x04
+#define FLASH_BOOST_LEDNUM_2    0x80
+
+/* MAX77693 VOUT_FLASH1 register */
+#define FLASH_VOUT_MIN          3300
+#define FLASH_VOUT_MAX          5500
+#define FLASH_VOUT_STEP         25
+#define FLASH_VOUT_RMIN         0x0c
+
+/* MAX77693 FLASH_STATUS register */
+#define FLASH_STATUS_FLASH_ON   BIT(3)
+#define FLASH_STATUS_TORCH_ON   BIT(2)
+
+/* MAX77693 FLASH_INT register */
+#define FLASH_INT_FLED2_OPEN    BIT(0)
+#define FLASH_INT_FLED2_SHORT   BIT(1)
+#define FLASH_INT_FLED1_OPEN    BIT(2)
+#define FLASH_INT_FLED1_SHORT   BIT(3)
+#define FLASH_INT_OVER_CURRENT  BIT(4)
+
 /* MAX77693 CHG_CNFG_00 register */
 #define CHG_CNFG_00_CHG_MASK            0x1
 #define CHG_CNFG_00_BUCK_MASK           0x4
diff --git a/include/linux/mfd/max77693.h b/include/linux/mfd/max77693.h
index 3f3dc45f93ee..f0b6585cd874 100644
--- a/include/linux/mfd/max77693.h
+++ b/include/linux/mfd/max77693.h
@@ -63,6 +63,45 @@ struct max77693_muic_platform_data {
         int path_uart;
 };
 
+/* MAX77693 led flash */
+
+/* triggers */
+enum max77693_led_trigger {
+        MAX77693_LED_TRIG_OFF,
+        MAX77693_LED_TRIG_FLASH,
+        MAX77693_LED_TRIG_TORCH,
+        MAX77693_LED_TRIG_EXT,
+        MAX77693_LED_TRIG_SOFT,
+};
+
+/* trigger types */
+enum max77693_led_trigger_type {
+        MAX77693_LED_TRIG_TYPE_EDGE,
+        MAX77693_LED_TRIG_TYPE_LEVEL,
+};
+
+/* boost modes */
+enum max77693_led_boost_mode {
+        MAX77693_LED_BOOST_NONE,
+        MAX77693_LED_BOOST_ADAPTIVE,
+        MAX77693_LED_BOOST_FIXED,
+};
+
+struct max77693_led_platform_data {
+        u32 fleds[2];
+        u32 iout_torch[2];
+        u32 iout_flash[2];
+        u32 trigger[2];
+        u32 trigger_type[2];
+        u32 num_leds;
+        u32 boost_mode;
+        u32 flash_timeout;
+        u32 boost_vout;
+        u32 low_vsys;
+};
+
+/* MAX77693 */
+
 struct max77693_platform_data {
         /* regulator data */
         struct max77693_regulator_data *regulators;
@@ -70,5 +109,6 @@ struct max77693_platform_data {
 
         /* muic data */
         struct max77693_muic_platform_data *muic_data;
+        struct max77693_led_platform_data *led_data;
 };
 #endif  /* __LINUX_MFD_MAX77693_H */