summaryrefslogtreecommitdiffstats
path: root/include/linux/mfd/lp8788.h
blob: 2a32b16f79cb88c2e3649f190508b7abb980818d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
/*
 * TI LP8788 MFD Device
 *
 * Copyright 2012 Texas Instruments
 *
 * Author: Milo(Woogyom) Kim <milo.kim@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#ifndef __MFD_LP8788_H__
#define __MFD_LP8788_H__

#include <linux/gpio.h>
#include <linux/irqdomain.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_bl_pwm_polarity {
	LP8788_PWM_ACTIVE_HIGH,
	LP8788_PWM_ACTIVE_LOW,
};

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_ldo_enable_pin
 *
 *   Basically, all LDOs are enabled through the I2C commands.
 *   But ALDO 1 ~ 5, 7, DLDO 7, 9, 11 can be enabled by external gpio pins.
 *
 * @gpio         : gpio number which is used for enabling ldos
 * @init_state   : initial gpio state (ex. GPIOF_OUT_INIT_LOW)
 */
struct lp8788_ldo_enable_pin {
	int gpio;
	int init_state;
};

/*
 * 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_bl_pwm_data
 * @pwm_set_intensity     : set duty of pwm
 * @pwm_get_intensity     : get current duty of pwm
 */
struct lp8788_bl_pwm_data {
	void (*pwm_set_intensity) (int brightness, int max_brightness);
	int (*pwm_get_intensity) (int max_brightness);
};

/*
 * 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
 * @pwm_data              : platform specific pwm generation functions
 *                          only valid when bl_mode is 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 lp8788_bl_pwm_polarity pwm_pol;
	struct lp8788_bl_pwm_data pwm_data;
};

/*
 * 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
 * @ldo_pin      : gpio configurations for enabling LDOs
 * @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;
	struct lp8788_ldo_enable_pin *ldo_pin[EN_LDOS_MAX];

	/* 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