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