include/power/pmic.h

   1 /*
   2  *  Copyright (C) 2011-2012 Samsung Electronics
   3  *  Lukasz Majewski <l.majewski@samsung.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef __CORE_PMIC_H_
   9 #define __CORE_PMIC_H_
  10
  11 #include <linux/list.h>
  12 #include <i2c.h>
  13 #include <power/power_chrg.h>
  14
  15 enum { PMIC_I2C, PMIC_SPI, PMIC_NONE};
  16 enum { I2C_PMIC, I2C_NUM, };
  17 enum { PMIC_READ, PMIC_WRITE, };
  18 enum { PMIC_SENSOR_BYTE_ORDER_LITTLE, PMIC_SENSOR_BYTE_ORDER_BIG, };
  19
  20 enum {
  21         PMIC_CHARGER_DISABLE,
  22         PMIC_CHARGER_ENABLE,
  23 };
  24
  25 struct p_i2c {
  26         unsigned char addr;
  27         unsigned char *buf;
  28         unsigned char tx_num;
  29 };
  30
  31 struct p_spi {
  32         unsigned int cs;
  33         unsigned int mode;
  34         unsigned int bitlen;
  35         unsigned int clk;
  36         unsigned int flags;
  37         u32 (*prepare_tx)(u32 reg, u32 *val, u32 write);
  38 };
  39
  40 struct pmic;
  41 struct power_fg {
  42         int (*fg_battery_check) (struct pmic *p, struct pmic *bat);
  43         int (*fg_battery_update) (struct pmic *p, struct pmic *bat);
  44 };
  45
  46 struct power_chrg {
  47         int (*chrg_type) (struct pmic *p);
  48         int (*chrg_bat_present) (struct pmic *p);
  49         int (*chrg_state) (struct pmic *p, int state, int current);
  50 };
  51
  52 struct power_battery {
  53         struct battery *bat;
  54         int (*battery_init) (struct pmic *bat, struct pmic *p1,
  55                              struct pmic *p2, struct pmic *p3);
  56         int (*battery_charge) (struct pmic *bat);
  57         /* Keep info about power devices involved with battery operation */
  58         struct pmic *chrg, *fg, *muic;
  59 };
  60
  61 struct pmic {
  62         const char *name;
  63         unsigned char bus;
  64         unsigned char interface;
  65         unsigned char sensor_byte_order;
  66         unsigned int number_of_regs;
  67         union hw {
  68                 struct p_i2c i2c;
  69                 struct p_spi spi;
  70         } hw;
  71
  72         void (*low_power_mode) (void);
  73         struct power_battery *pbat;
  74         struct power_chrg *chrg;
  75         struct power_fg *fg;
  76
  77         struct pmic *parent;
  78         struct list_head list;
  79 };
  80
  81 int pmic_init(unsigned char bus);
  82 int pmic_dialog_init(unsigned char bus);
  83 int check_reg(struct pmic *p, u32 reg);
  84 struct pmic *pmic_alloc(void);
  85 struct pmic *pmic_get(const char *s);
  86 int pmic_probe(struct pmic *p);
  87 int pmic_reg_read(struct pmic *p, u32 reg, u32 *val);
  88 int pmic_reg_write(struct pmic *p, u32 reg, u32 val);
  89 int pmic_set_output(struct pmic *p, u32 reg, int ldo, int on);
  90
  91 #define pmic_i2c_addr (p->hw.i2c.addr)
  92 #define pmic_i2c_tx_num (p->hw.i2c.tx_num)
  93
  94 #define pmic_spi_bitlen (p->hw.spi.bitlen)
  95 #define pmic_spi_flags (p->hw.spi.flags)
  96
  97 #endif /* __CORE_PMIC_H_ */