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 <[e-mail]>
Signed-off-by: Andrzej Hajda <[e-mail]>
Acked-by: Kyungmin Park <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/max77693.c

···
 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 = {

include/linux/mfd/max77693-private.h

···
 	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

include/linux/mfd/max77693.h

···
 	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;
···
 
 	/* muic data */
 	struct max77693_muic_platform_data *muic_data;
+	struct max77693_led_platform_data *led_data;
 };
 #endif	/* __LINUX_MFD_MAX77693_H */