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-rw-r--r--include/linux/mfd/lp8788.h330
1 files changed, 330 insertions, 0 deletions
diff --git a/include/linux/mfd/lp8788.h b/include/linux/mfd/lp8788.h
new file mode 100644
index 000000000..3d5c480d5
--- /dev/null
+++ b/include/linux/mfd/lp8788.h
@@ -0,0 +1,330 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * TI LP8788 MFD Device
+ *
+ * Copyright 2012 Texas Instruments
+ *
+ * Author: Milo(Woogyom) Kim <milo.kim@ti.com>
+ */
+
+#ifndef __MFD_LP8788_H__
+#define __MFD_LP8788_H__
+
+#include <linux/gpio.h>
+#include <linux/irqdomain.h>
+#include <linux/pwm.h>
+#include <linux/regmap.h>
+
+#define LP8788_DEV_BUCK "lp8788-buck"
+#define LP8788_DEV_DLDO "lp8788-dldo"
+#define LP8788_DEV_ALDO "lp8788-aldo"
+#define LP8788_DEV_CHARGER "lp8788-charger"
+#define LP8788_DEV_RTC "lp8788-rtc"
+#define LP8788_DEV_BACKLIGHT "lp8788-backlight"
+#define LP8788_DEV_VIBRATOR "lp8788-vibrator"
+#define LP8788_DEV_KEYLED "lp8788-keyled"
+#define LP8788_DEV_ADC "lp8788-adc"
+
+#define LP8788_NUM_BUCKS 4
+#define LP8788_NUM_DLDOS 12
+#define LP8788_NUM_ALDOS 10
+#define LP8788_NUM_BUCK2_DVS 2
+
+#define LP8788_CHG_IRQ "CHG_IRQ"
+#define LP8788_PRSW_IRQ "PRSW_IRQ"
+#define LP8788_BATT_IRQ "BATT_IRQ"
+#define LP8788_ALM_IRQ "ALARM_IRQ"
+
+enum lp8788_int_id {
+ /* interrup register 1 : Addr 00h */
+ LP8788_INT_TSDL,
+ LP8788_INT_TSDH,
+ LP8788_INT_UVLO,
+ LP8788_INT_FLAGMON,
+ LP8788_INT_PWRON_TIME,
+ LP8788_INT_PWRON,
+ LP8788_INT_COMP1,
+ LP8788_INT_COMP2,
+
+ /* interrupt register 2 : Addr 01h */
+ LP8788_INT_CHG_INPUT_STATE,
+ LP8788_INT_CHG_STATE,
+ LP8788_INT_EOC,
+ LP8788_INT_CHG_RESTART,
+ LP8788_INT_RESTART_TIMEOUT,
+ LP8788_INT_FULLCHG_TIMEOUT,
+ LP8788_INT_PRECHG_TIMEOUT,
+
+ /* interrupt register 3 : Addr 02h */
+ LP8788_INT_RTC_ALARM1 = 17,
+ LP8788_INT_RTC_ALARM2,
+ LP8788_INT_ENTER_SYS_SUPPORT,
+ LP8788_INT_EXIT_SYS_SUPPORT,
+ LP8788_INT_BATT_LOW,
+ LP8788_INT_NO_BATT,
+
+ LP8788_INT_MAX = 24,
+};
+
+enum lp8788_dvs_sel {
+ DVS_SEL_V0,
+ DVS_SEL_V1,
+ DVS_SEL_V2,
+ DVS_SEL_V3,
+};
+
+enum lp8788_ext_ldo_en_id {
+ EN_ALDO1,
+ EN_ALDO234,
+ EN_ALDO5,
+ EN_ALDO7,
+ EN_DLDO7,
+ EN_DLDO911,
+ EN_LDOS_MAX,
+};
+
+enum lp8788_charger_event {
+ NO_CHARGER,
+ CHARGER_DETECTED,
+};
+
+enum lp8788_bl_ctrl_mode {
+ LP8788_BL_REGISTER_ONLY,
+ LP8788_BL_COMB_PWM_BASED, /* PWM + I2C, changed by PWM input */
+ LP8788_BL_COMB_REGISTER_BASED, /* PWM + I2C, changed by I2C */
+};
+
+enum lp8788_bl_dim_mode {
+ LP8788_DIM_EXPONENTIAL,
+ LP8788_DIM_LINEAR,
+};
+
+enum lp8788_bl_full_scale_current {
+ LP8788_FULLSCALE_5000uA,
+ LP8788_FULLSCALE_8500uA,
+ LP8788_FULLSCALE_1200uA,
+ LP8788_FULLSCALE_1550uA,
+ LP8788_FULLSCALE_1900uA,
+ LP8788_FULLSCALE_2250uA,
+ LP8788_FULLSCALE_2600uA,
+ LP8788_FULLSCALE_2950uA,
+};
+
+enum lp8788_bl_ramp_step {
+ LP8788_RAMP_8us,
+ LP8788_RAMP_1024us,
+ LP8788_RAMP_2048us,
+ LP8788_RAMP_4096us,
+ LP8788_RAMP_8192us,
+ LP8788_RAMP_16384us,
+ LP8788_RAMP_32768us,
+ LP8788_RAMP_65538us,
+};
+
+enum lp8788_isink_scale {
+ LP8788_ISINK_SCALE_100mA,
+ LP8788_ISINK_SCALE_120mA,
+};
+
+enum lp8788_isink_number {
+ LP8788_ISINK_1,
+ LP8788_ISINK_2,
+ LP8788_ISINK_3,
+};
+
+enum lp8788_alarm_sel {
+ LP8788_ALARM_1,
+ LP8788_ALARM_2,
+ LP8788_ALARM_MAX,
+};
+
+enum lp8788_adc_id {
+ LPADC_VBATT_5P5,
+ LPADC_VIN_CHG,
+ LPADC_IBATT,
+ LPADC_IC_TEMP,
+ LPADC_VBATT_6P0,
+ LPADC_VBATT_5P0,
+ LPADC_ADC1,
+ LPADC_ADC2,
+ LPADC_VDD,
+ LPADC_VCOIN,
+ LPADC_VDD_LDO,
+ LPADC_ADC3,
+ LPADC_ADC4,
+ LPADC_MAX,
+};
+
+struct lp8788;
+
+/*
+ * lp8788_buck1_dvs
+ * @gpio : gpio pin number for dvs control
+ * @vsel : dvs selector for buck v1 register
+ */
+struct lp8788_buck1_dvs {
+ int gpio;
+ enum lp8788_dvs_sel vsel;
+};
+
+/*
+ * lp8788_buck2_dvs
+ * @gpio : two gpio pin numbers are used for dvs
+ * @vsel : dvs selector for buck v2 register
+ */
+struct lp8788_buck2_dvs {
+ int gpio[LP8788_NUM_BUCK2_DVS];
+ enum lp8788_dvs_sel vsel;
+};
+
+/*
+ * struct lp8788_chg_param
+ * @addr : charging control register address (range : 0x11 ~ 0x1C)
+ * @val : charging parameter value
+ */
+struct lp8788_chg_param {
+ u8 addr;
+ u8 val;
+};
+
+/*
+ * struct lp8788_charger_platform_data
+ * @adc_vbatt : adc channel name for battery voltage
+ * @adc_batt_temp : adc channel name for battery temperature
+ * @max_vbatt_mv : used for calculating battery capacity
+ * @chg_params : initial charging parameters
+ * @num_chg_params : numbers of charging parameters
+ * @charger_event : the charger event can be reported to the platform side
+ */
+struct lp8788_charger_platform_data {
+ const char *adc_vbatt;
+ const char *adc_batt_temp;
+ unsigned int max_vbatt_mv;
+ struct lp8788_chg_param *chg_params;
+ int num_chg_params;
+ void (*charger_event) (struct lp8788 *lp,
+ enum lp8788_charger_event event);
+};
+
+/*
+ * struct lp8788_backlight_platform_data
+ * @name : backlight driver name. (default: "lcd-backlight")
+ * @initial_brightness : initial value of backlight brightness
+ * @bl_mode : brightness control by pwm or lp8788 register
+ * @dim_mode : dimming mode selection
+ * @full_scale : full scale current setting
+ * @rise_time : brightness ramp up step time
+ * @fall_time : brightness ramp down step time
+ * @pwm_pol : pwm polarity setting when bl_mode is pwm based
+ * @period_ns : platform specific pwm period value. unit is nano.
+ Only valid when bl_mode is LP8788_BL_COMB_PWM_BASED
+ */
+struct lp8788_backlight_platform_data {
+ char *name;
+ int initial_brightness;
+ enum lp8788_bl_ctrl_mode bl_mode;
+ enum lp8788_bl_dim_mode dim_mode;
+ enum lp8788_bl_full_scale_current full_scale;
+ enum lp8788_bl_ramp_step rise_time;
+ enum lp8788_bl_ramp_step fall_time;
+ enum pwm_polarity pwm_pol;
+ unsigned int period_ns;
+};
+
+/*
+ * struct lp8788_led_platform_data
+ * @name : led driver name. (default: "keyboard-backlight")
+ * @scale : current scale
+ * @num : current sink number
+ * @iout_code : current output value (Addr 9Ah ~ 9Bh)
+ */
+struct lp8788_led_platform_data {
+ char *name;
+ enum lp8788_isink_scale scale;
+ enum lp8788_isink_number num;
+ int iout_code;
+};
+
+/*
+ * struct lp8788_vib_platform_data
+ * @name : vibrator driver name
+ * @scale : current scale
+ * @num : current sink number
+ * @iout_code : current output value (Addr 9Ah ~ 9Bh)
+ * @pwm_code : PWM code value (Addr 9Ch ~ 9Eh)
+ */
+struct lp8788_vib_platform_data {
+ char *name;
+ enum lp8788_isink_scale scale;
+ enum lp8788_isink_number num;
+ int iout_code;
+ int pwm_code;
+};
+
+/*
+ * struct lp8788_platform_data
+ * @init_func : used for initializing registers
+ * before mfd driver is registered
+ * @buck_data : regulator initial data for buck
+ * @dldo_data : regulator initial data for digital ldo
+ * @aldo_data : regulator initial data for analog ldo
+ * @buck1_dvs : gpio configurations for buck1 dvs
+ * @buck2_dvs : gpio configurations for buck2 dvs
+ * @chg_pdata : platform data for charger driver
+ * @alarm_sel : rtc alarm selection (1 or 2)
+ * @bl_pdata : configurable data for backlight driver
+ * @led_pdata : configurable data for led driver
+ * @vib_pdata : configurable data for vibrator driver
+ * @adc_pdata : iio map data for adc driver
+ */
+struct lp8788_platform_data {
+ /* general system information */
+ int (*init_func) (struct lp8788 *lp);
+
+ /* regulators */
+ struct regulator_init_data *buck_data[LP8788_NUM_BUCKS];
+ struct regulator_init_data *dldo_data[LP8788_NUM_DLDOS];
+ struct regulator_init_data *aldo_data[LP8788_NUM_ALDOS];
+ struct lp8788_buck1_dvs *buck1_dvs;
+ struct lp8788_buck2_dvs *buck2_dvs;
+
+ /* charger */
+ struct lp8788_charger_platform_data *chg_pdata;
+
+ /* rtc alarm */
+ enum lp8788_alarm_sel alarm_sel;
+
+ /* backlight */
+ struct lp8788_backlight_platform_data *bl_pdata;
+
+ /* current sinks */
+ struct lp8788_led_platform_data *led_pdata;
+ struct lp8788_vib_platform_data *vib_pdata;
+
+ /* adc iio map data */
+ struct iio_map *adc_pdata;
+};
+
+/*
+ * struct lp8788
+ * @dev : parent device pointer
+ * @regmap : used for i2c communcation on accessing registers
+ * @irqdm : interrupt domain for handling nested interrupt
+ * @irq : pin number of IRQ_N
+ * @pdata : lp8788 platform specific data
+ */
+struct lp8788 {
+ struct device *dev;
+ struct regmap *regmap;
+ struct irq_domain *irqdm;
+ int irq;
+ struct lp8788_platform_data *pdata;
+};
+
+int lp8788_irq_init(struct lp8788 *lp, int chip_irq);
+void lp8788_irq_exit(struct lp8788 *lp);
+int lp8788_read_byte(struct lp8788 *lp, u8 reg, u8 *data);
+int lp8788_read_multi_bytes(struct lp8788 *lp, u8 reg, u8 *data, size_t count);
+int lp8788_write_byte(struct lp8788 *lp, u8 reg, u8 data);
+int lp8788_update_bits(struct lp8788 *lp, u8 reg, u8 mask, u8 data);
+#endif
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