/*
- * Regulator driver for Active-semi act8931 PMIC chip for rk29xx
+ * Regulator driver for Active-semi act8931 PMIC chip
*
- * Copyright (C) 2010, 2011 ROCKCHIP, Inc.
-
- * Based on act8891.c that is work by zhangqing<zhangqing@rock-chips.com>
+ * Copyright (C) 2014 ROCKCHIP, Inc.
+ *
+ * Based on act8931.c in kernel 3.0 that is work by xhc<xhc@rock-chips.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.
*
*/
+
+#include <linux/mutex.h>
#include <linux/bug.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
-#include <linux/regulator/driver.h>
-#include <linux/regulator/act8931.h>
-#include <mach/gpio.h>
#include <linux/delay.h>
-#include <mach/iomux.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
-#include <plat/board.h>
-#ifdef CONFIG_HAS_EARLYSUSPEND
-#include <linux/earlysuspend.h>
-#endif
-
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/module.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
+#include <asm/system_misc.h>
+
#if 0
#define DBG(x...) printk(KERN_INFO x)
#else
#define DBG(x...)
#endif
-#if 1
-#define DBG_INFO(x...) printk(KERN_INFO x)
-#else
-#define DBG_INFO(x...)
-#endif
-#define PM_CONTROL
+
+#define ACT8931_NUM_REGULATORS 7
struct act8931 *g_act8931;
struct act8931 {
unsigned int irq;
+ unsigned int pwr_hold_gpio;
struct device *dev;
struct mutex io_lock;
struct i2c_client *i2c;
int num_regulators;
struct regulator_dev **rdev;
- struct early_suspend act8931_suspend;
+};
+
+struct act8931_board {
+ int irq_gpio;
+ int pwr_hold_gpio;
+ bool pm_off;
+ struct regulator_init_data *act8931_init_data[ACT8931_NUM_REGULATORS];
+ struct device_node *of_node[ACT8931_NUM_REGULATORS];
};
static u8 act8931_reg_read(struct act8931 *act8931, u8 reg);
static int act8931_set_bits(struct act8931 *act8931, u8 reg, u16 mask, u16 val);
+#define ACT8931_DCDC1 0
+#define ACT8931_DCDC2 1
+#define ACT8931_DCDC3 2
+
+#define ACT8931_LDO1 3
+#define ACT8931_LDO2 4
+#define ACT8931_LDO3 5
+#define ACT8931_LDO4 6
#define act8931_BUCK1_SET_VOL_BASE 0x20
#define act8931_BUCK2_SET_VOL_BASE 0x30
#define INDIS_MASK (1<<1)
#define CHGEOCOUT_MASK (1<<0)
-int act8931_charge_det, act8931_charge_ok;
+int act8931_charge_det;
EXPORT_SYMBOL(act8931_charge_det);
+
+int act8931_charge_ok;
EXPORT_SYMBOL(act8931_charge_ok);
-const static int buck_set_vol_base_addr[] = {
+static const int buck_set_vol_base_addr[] = {
act8931_BUCK1_SET_VOL_BASE,
act8931_BUCK2_SET_VOL_BASE,
act8931_BUCK3_SET_VOL_BASE,
};
-const static int buck_contr_base_addr[] = {
+static const int buck_contr_base_addr[] = {
act8931_BUCK1_CONTR_BASE,
- act8931_BUCK2_CONTR_BASE,
- act8931_BUCK3_CONTR_BASE,
+ act8931_BUCK2_CONTR_BASE,
+ act8931_BUCK3_CONTR_BASE,
};
#define act8931_BUCK_SET_VOL_REG(x) (buck_set_vol_base_addr[x])
#define act8931_BUCK_CONTR_REG(x) (buck_contr_base_addr[x])
-
-const static int ldo_set_vol_base_addr[] = {
+static const int ldo_set_vol_base_addr[] = {
act8931_LDO1_SET_VOL_BASE,
act8931_LDO2_SET_VOL_BASE,
act8931_LDO3_SET_VOL_BASE,
- act8931_LDO4_SET_VOL_BASE,
+ act8931_LDO4_SET_VOL_BASE,
};
-const static int ldo_contr_base_addr[] = {
+static const int ldo_contr_base_addr[] = {
act8931_LDO1_CONTR_BASE,
act8931_LDO2_CONTR_BASE,
act8931_LDO3_CONTR_BASE,
#define act8931_LDO_SET_VOL_REG(x) (ldo_set_vol_base_addr[x])
#define act8931_LDO_CONTR_REG(x) (ldo_contr_base_addr[x])
-const static int buck_voltage_map[] = {
+static const int buck_voltage_map[] = {
600, 625, 650, 675, 700, 725, 750, 775,
800, 825, 850, 875, 900, 925, 950, 975,
1000, 1025, 1050, 1075, 1100, 1125, 1150,
1175, 1200, 1250, 1300, 1350, 1400, 1450,
- 1500, 1550, 1600, 1650, 1700, 1750, 1800,
- 1850, 1900, 1950, 2000, 2050, 2100, 2150,
- 2200, 2250, 2300, 2350, 2400, 2500, 2600,
+ 1500, 1550, 1600, 1650, 1700, 1750, 1800,
+ 1850, 1900, 1950, 2000, 2050, 2100, 2150,
+ 2200, 2250, 2300, 2350, 2400, 2500, 2600,
2700, 2800, 2850, 2900, 3000, 3100, 3200,
3300, 3400, 3500, 3600, 3700, 3800, 3900,
};
-const static int ldo_voltage_map[] = {
+static const int ldo_voltage_map[] = {
600, 625, 650, 675, 700, 725, 750, 775,
800, 825, 850, 875, 900, 925, 950, 975,
1000, 1025, 1050, 1075, 1100, 1125, 1150,
1175, 1200, 1250, 1300, 1350, 1400, 1450,
- 1500, 1550, 1600, 1650, 1700, 1750, 1800,
- 1850, 1900, 1950, 2000, 2050, 2100, 2150,
- 2200, 2250, 2300, 2350, 2400, 2500, 2600,
+ 1500, 1550, 1600, 1650, 1700, 1750, 1800,
+ 1850, 1900, 1950, 2000, 2050, 2100, 2150,
+ 2200, 2250, 2300, 2350, 2400, 2500, 2600,
2700, 2800, 2850, 2900, 3000, 3100, 3200,
3300, 3400, 3500, 3600, 3700, 3800, 3900,
};
return -EINVAL;
return 1000 * ldo_voltage_map[index];
}
+
static int act8931_ldo_is_enabled(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int ldo = rdev_get_id(dev) -ACT8931_LDO1;
+ int ldo = rdev_get_id(dev) - ACT8931_LDO1;
u16 val;
- u16 mask=0x80;
- val = act8931_reg_read(act8931, act8931_LDO_CONTR_REG(ldo));
+ u16 mask = 0x80;
+
+ val = act8931_reg_read(act8931, act8931_LDO_CONTR_REG(ldo));
if (val < 0)
return val;
- val=val&~0x7f;
+ val = val & ~0x7f;
if (val & mask)
return 1;
else
- return 0;
+ return 0;
}
+
static int act8931_ldo_enable(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int ldo= rdev_get_id(dev) -ACT8931_LDO1;
- u16 mask=0x80;
+ int ldo = rdev_get_id(dev) - ACT8931_LDO1;
+ u16 mask = 0x80;
- return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo), mask, 0x80);
-
+ return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo), mask,
+ 0x80);
}
+
static int act8931_ldo_disable(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int ldo= rdev_get_id(dev) -ACT8931_LDO1;
- u16 mask=0x80;
-
- return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo), mask, 0);
+ int ldo = rdev_get_id(dev) - ACT8931_LDO1;
+ u16 mask = 0x80;
+ return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo), mask, 0);
}
+
static int act8931_ldo_get_voltage(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int ldo= rdev_get_id(dev) -ACT8931_LDO1;
+ int ldo = rdev_get_id(dev) - ACT8931_LDO1;
u16 reg = 0;
int val;
- reg = act8931_reg_read(act8931,act8931_LDO_SET_VOL_REG(ldo));
+
+ reg = act8931_reg_read(act8931, act8931_LDO_SET_VOL_REG(ldo));
reg &= LDO_VOL_MASK;
- val = 1000 * ldo_voltage_map[reg];
+ val = 1000 * ldo_voltage_map[reg];
+
return val;
}
+
static int act8931_ldo_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV, unsigned *selector)
+ int min_uV, int max_uV, unsigned *selector)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int ldo= rdev_get_id(dev) -ACT8931_LDO1;
+ int ldo = rdev_get_id(dev) - ACT8931_LDO1;
int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
- const int *vol_map =ldo_voltage_map;
+ const int *vol_map = ldo_voltage_map;
u16 val;
int ret = 0;
- if (min_vol < vol_map[VOL_MIN_IDX] ||
- min_vol > vol_map[VOL_MAX_IDX])
+
+ if (min_vol < vol_map[VOL_MIN_IDX] || min_vol > vol_map[VOL_MAX_IDX])
return -EINVAL;
- for (val = VOL_MIN_IDX; val <= VOL_MAX_IDX;
- val++){
+ for (val = VOL_MIN_IDX; val <= VOL_MAX_IDX; val++) {
if (vol_map[val] >= min_vol)
- break; }
-
+ break;
+ }
+
if (vol_map[val] > max_vol)
return -EINVAL;
ret = act8931_set_bits(act8931, act8931_LDO_SET_VOL_REG(ldo),
- LDO_VOL_MASK, val);
- return ret;
+ LDO_VOL_MASK, val);
+ return ret;
}
+
static unsigned int act8931_ldo_get_mode(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int ldo = rdev_get_id(dev) -ACT8931_LDO1 ;
+ int ldo = rdev_get_id(dev) - ACT8931_LDO1;
u16 mask = 0xcf;
u16 val;
+
val = act8931_reg_read(act8931, act8931_LDO_CONTR_REG(ldo));
- val=val|mask;
- if (val== mask)
+ val = val | mask;
+
+ if (val == mask)
return REGULATOR_MODE_NORMAL;
else
return REGULATOR_MODE_STANDBY;
-
}
+
static int act8931_ldo_set_mode(struct regulator_dev *dev, unsigned int mode)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int ldo = rdev_get_id(dev) -ACT8931_LDO1 ;
+ int ldo = rdev_get_id(dev) - ACT8931_LDO1;
u16 mask = 0x20;
- switch(mode)
- {
+
+ switch (mode) {
case REGULATOR_MODE_NORMAL:
- return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo), mask, 0);
+ return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo),
+ mask, 0);
case REGULATOR_MODE_STANDBY:
- return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo), mask, mask);
+ return act8931_set_bits(act8931, act8931_LDO_CONTR_REG(ldo),
+ mask, mask);
default:
- printk("error:pmu_act8931 only lowpower and nomal mode\n");
+ pr_err("pmu_act8931 only lowpower and normal mode\n");
return -EINVAL;
}
-
-
}
+
static struct regulator_ops act8931_ldo_ops = {
.set_voltage = act8931_ldo_set_voltage,
.get_voltage = act8931_ldo_get_voltage,
.disable = act8931_ldo_disable,
.get_mode = act8931_ldo_get_mode,
.set_mode = act8931_ldo_set_mode,
-
};
static int act8931_dcdc_list_voltage(struct regulator_dev *dev, unsigned index)
{
if (index >= ARRAY_SIZE(buck_voltage_map))
return -EINVAL;
+
return 1000 * buck_voltage_map[index];
}
+
static int act8931_dcdc_is_enabled(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int buck = rdev_get_id(dev) -ACT8931_DCDC1;
+ int buck = rdev_get_id(dev) - ACT8931_DCDC1;
u16 val;
- u16 mask=0x80;
+ u16 mask = 0x80;
+
val = act8931_reg_read(act8931, act8931_BUCK_CONTR_REG(buck));
if (val < 0)
return val;
- val=val&~0x7f;
+ val = val & ~0x7f;
if (val & mask)
return 1;
else
- return 0;
+ return 0;
}
+
static int act8931_dcdc_enable(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int buck = rdev_get_id(dev) -ACT8931_DCDC1 ;
- u16 mask=0x80;
- return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck), mask, 0x80);
+ int buck = rdev_get_id(dev) - ACT8931_DCDC1;
+ u16 mask = 0x80;
+ return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck), mask,
+ 0x80);
}
+
static int act8931_dcdc_disable(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int buck = rdev_get_id(dev) -ACT8931_DCDC1 ;
- u16 mask=0x80;
- return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck), mask, 0);
+ int buck = rdev_get_id(dev) - ACT8931_DCDC1;
+ u16 mask = 0x80;
+
+ return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck), mask, 0);
}
+
static int act8931_dcdc_get_voltage(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int buck = rdev_get_id(dev) -ACT8931_DCDC1 ;
+ int buck = rdev_get_id(dev) - ACT8931_DCDC1;
u16 reg = 0;
int val;
- reg = act8931_reg_read(act8931,act8931_BUCK_SET_VOL_REG(buck));
+
+ reg = act8931_reg_read(act8931, act8931_BUCK_SET_VOL_REG(buck));
reg &= BUCK_VOL_MASK;
- DBG("%d\n", reg);
- val = 1000 * buck_voltage_map[reg];
- DBG("%d\n", val);
+ DBG("%d\n", reg);
+ val = 1000 * buck_voltage_map[reg];
+ DBG("%d\n", val);
+
return val;
}
+
static int act8931_dcdc_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV, unsigned *selector)
+ int min_uV, int max_uV, unsigned *selector)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int buck = rdev_get_id(dev) -ACT8931_DCDC1 ;
+ int buck = rdev_get_id(dev) - ACT8931_DCDC1;
int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
const int *vol_map = buck_voltage_map;
u16 val;
int ret = 0;
- DBG("%s, min_uV = %d, max_uV = %d!\n", __func__, min_uV, max_uV);
+ DBG("%s, min_uV = %d, max_uV = %d!\n", __func__, min_uV, max_uV);
if (min_vol < vol_map[VOL_MIN_IDX] ||
min_vol > vol_map[VOL_MAX_IDX])
return -EINVAL;
- for (val = VOL_MIN_IDX; val <= VOL_MAX_IDX;
- val++){
+ for (val = VOL_MIN_IDX; val <= VOL_MAX_IDX; val++) {
if (vol_map[val] >= min_vol)
- break;}
+ break;
+ }
if (vol_map[val] > max_vol)
- printk("WARNING:this voltage is not support!voltage set is %d mv\n",vol_map[val]);
+ pr_warn("this voltage is not support!voltage set is %d mv\n",
+ vol_map[val]);
+
ret = act8931_set_bits(act8931, act8931_BUCK_SET_VOL_REG(buck),
- BUCK_VOL_MASK, val);
+ BUCK_VOL_MASK, val);
ret = act8931_set_bits(act8931, act8931_BUCK_SET_VOL_REG(buck) + 0x01,
- BUCK_VOL_MASK, val);
- //if (ret)
- return ret;
+ BUCK_VOL_MASK, val);
+
+ return ret;
}
+
static unsigned int act8931_dcdc_get_mode(struct regulator_dev *dev)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int buck = rdev_get_id(dev) -ACT8931_DCDC1 ;
+ int buck = rdev_get_id(dev) - ACT8931_DCDC1;
u16 mask = 0xcf;
u16 val;
+
val = act8931_reg_read(act8931, act8931_BUCK_CONTR_REG(buck));
- val=val|mask;
- if (val== mask)
+ val = val | mask;
+ if (val == mask)
return REGULATOR_MODE_STANDBY;
else
return REGULATOR_MODE_NORMAL;
-
}
+
static int act8931_dcdc_set_mode(struct regulator_dev *dev, unsigned int mode)
{
struct act8931 *act8931 = rdev_get_drvdata(dev);
- int buck = rdev_get_id(dev) -ACT8931_DCDC1 ;
+ int buck = rdev_get_id(dev) - ACT8931_DCDC1;
u16 mask = 0x20;
- switch(mode)
- {
+
+ switch (mode) {
case REGULATOR_MODE_STANDBY:
- return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck), mask, 0);
+ return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck),
+ mask, 0);
case REGULATOR_MODE_NORMAL:
- return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck), mask, mask);
+ return act8931_set_bits(act8931, act8931_BUCK_CONTR_REG(buck),
+ mask, mask);
default:
- printk("error:pmu_act8931 only powersave and pwm mode\n");
+ pr_err("pmu_act8931 only powersave and pwm mode\n");
return -EINVAL;
}
-
-
}
-static struct regulator_ops act8931_dcdc_ops = {
+
+static struct regulator_ops act8931_dcdc_ops = {
.set_voltage = act8931_dcdc_set_voltage,
.get_voltage = act8931_dcdc_get_voltage,
- .list_voltage= act8931_dcdc_list_voltage,
+ .list_voltage = act8931_dcdc_list_voltage,
.is_enabled = act8931_dcdc_is_enabled,
.enable = act8931_dcdc_enable,
.disable = act8931_dcdc_disable,
.get_mode = act8931_dcdc_get_mode,
.set_mode = act8931_dcdc_set_mode,
};
+
static struct regulator_desc regulators[] = {
{
- .name = "ACT_LDO1",
- .id =0,
- .ops = &act8931_ldo_ops,
- .n_voltages = ARRAY_SIZE(ldo_voltage_map),
+ .name = "ACT_DCDC1",
+ .id = 0,
+ .ops = &act8931_dcdc_ops,
+ .n_voltages = ARRAY_SIZE(buck_voltage_map),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
{
- .name = "ACT_LDO2",
+ .name = "ACT_DCDC2",
.id = 1,
- .ops = &act8931_ldo_ops,
- .n_voltages = ARRAY_SIZE(ldo_voltage_map),
+ .ops = &act8931_dcdc_ops,
+ .n_voltages = ARRAY_SIZE(buck_voltage_map),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
{
- .name = "ACT_LDO3",
+ .name = "ACT_DCDC3",
.id = 2,
- .ops = &act8931_ldo_ops,
- .n_voltages = ARRAY_SIZE(ldo_voltage_map),
+ .ops = &act8931_dcdc_ops,
+ .n_voltages = ARRAY_SIZE(buck_voltage_map),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
{
- .name = "ACT_LDO4",
+ .name = "ACT_LDO1",
.id = 3,
.ops = &act8931_ldo_ops,
.n_voltages = ARRAY_SIZE(ldo_voltage_map),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
-
{
- .name = "ACT_DCDC1",
+ .name = "ACT_LDO2",
.id = 4,
- .ops = &act8931_dcdc_ops,
- .n_voltages = ARRAY_SIZE(buck_voltage_map),
+ .ops = &act8931_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo_voltage_map),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
{
- .name = "ACT_DCDC2",
+ .name = "ACT_LDO3",
.id = 5,
- .ops = &act8931_dcdc_ops,
- .n_voltages = ARRAY_SIZE(buck_voltage_map),
+ .ops = &act8931_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo_voltage_map),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
{
- .name = "ACT_DCDC3",
+ .name = "ACT_LDO4",
.id = 6,
- .ops = &act8931_dcdc_ops,
- .n_voltages = ARRAY_SIZE(buck_voltage_map),
+ .ops = &act8931_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo_voltage_map),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
-
+
};
-/*
- *
- */
-static int act8931_i2c_read(struct i2c_client *i2c, char reg, int count, u16 *dest)
+static int act8931_i2c_read(struct i2c_client *i2c, char reg, int count,
+ u16 *dest)
{
- int ret;
- struct i2c_adapter *adap;
- struct i2c_msg msgs[2];
+ int ret;
+ struct i2c_adapter *adap;
+ struct i2c_msg msgs[2];
- if(!i2c)
+ if (!i2c)
return ret;
if (count != 1)
- return -EIO;
-
- adap = i2c->adapter;
-
- msgs[0].addr = i2c->addr;
- msgs[0].buf = ®
- msgs[0].flags = i2c->flags;
- msgs[0].len = 1;
- msgs[0].scl_rate = 200*1000;
-
- msgs[1].buf = (u8 *)dest;
- msgs[1].addr = i2c->addr;
- msgs[1].flags = i2c->flags | I2C_M_RD;
- msgs[1].len = 1;
- msgs[1].scl_rate = 200*1000;
- ret = i2c_transfer(adap, msgs, 2);
-
- DBG("***run in %s %d msgs[1].buf = %d\n",__FUNCTION__,__LINE__,*(msgs[1].buf));
-
- return 0;
+ return -EIO;
+
+ adap = i2c->adapter;
+
+ msgs[0].addr = i2c->addr;
+ msgs[0].buf = ®
+ msgs[0].flags = i2c->flags;
+ msgs[0].len = 1;
+ msgs[0].scl_rate = 200*1000;
+
+ msgs[1].buf = (u8 *)dest;
+ msgs[1].addr = i2c->addr;
+ msgs[1].flags = i2c->flags | I2C_M_RD;
+ msgs[1].len = 1;
+ msgs[1].scl_rate = 200*1000;
+ ret = i2c_transfer(adap, msgs, 2);
+
+ DBG("***run in %s %d msgs[1].buf = %d\n", __func__, __LINE__,
+ *(msgs[1].buf));
+
+ return 0;
}
-static int act8931_i2c_write(struct i2c_client *i2c, char reg, int count, const u16 src)
+static int act8931_i2c_write(struct i2c_client *i2c, char reg, int count,
+ const u16 src)
{
- int ret=-1;
-
struct i2c_adapter *adap;
struct i2c_msg msg;
char tx_buf[2];
+ int ret = -1;
- if(!i2c)
+ if (!i2c)
return ret;
if (count != 1)
return -EIO;
-
- adap = i2c->adapter;
+
+ adap = i2c->adapter;
tx_buf[0] = reg;
tx_buf[1] = src;
-
+
msg.addr = i2c->addr;
msg.buf = &tx_buf[0];
- msg.len = 1 +1;
- msg.flags = i2c->flags;
- msg.scl_rate = 200*1000;
+ msg.len = 1 + 1;
+ msg.flags = i2c->flags;
+ msg.scl_rate = 200*1000;
ret = i2c_transfer(adap, &msg, 1);
- return 0;
+
+ return 0;
}
static u8 act8931_reg_read(struct act8931 *act8931, u8 reg)
mutex_unlock(&act8931->io_lock);
- return val & 0xff;
+ return val & 0xff;
}
static int act8931_set_bits(struct act8931 *act8931, u8 reg, u16 mask, u16 val)
tmp = (tmp & ~mask) | val;
if (ret == 0) {
ret = act8931_i2c_write(act8931->i2c, reg, 1, tmp);
- DBG("reg write 0x%02x -> 0x%02x\n", (int)reg, (unsigned)val&0xff);
+ DBG("reg write 0x%02x -> 0x%02x\n", (int)reg,
+ (unsigned)val&0xff);
}
act8931_i2c_read(act8931->i2c, reg, 1, &tmp);
DBG("2 reg read 0x%02x -> 0x%02x\n", (int)reg, (unsigned)tmp&0xff);
mutex_unlock(&act8931->io_lock);
- return ret;
-}
-static int __devinit setup_regulators(struct act8931 *act8931, struct act8931_platform_data *pdata)
-{
- int i, err;
-
- act8931->num_regulators = pdata->num_regulators;
- act8931->rdev = kcalloc(pdata->num_regulators,
- sizeof(struct regulator_dev *), GFP_KERNEL);
- if (!act8931->rdev) {
- return -ENOMEM;
- }
- /* Instantiate the regulators */
- for (i = 0; i < pdata->num_regulators; i++) {
- int id = pdata->regulators[i].id;
- act8931->rdev[i] = regulator_register(®ulators[id],
- act8931->dev, pdata->regulators[i].initdata, act8931);
-/*
- if (IS_ERR(act8931->rdev[i])) {
- err = PTR_ERR(act8931->rdev[i]);
- dev_err(act8931->dev, "regulator init failed: %d\n",
- err);
- goto error;
- }*/
- }
-
- return 0;
-error:
- while (--i >= 0)
- regulator_unregister(act8931->rdev[i]);
- kfree(act8931->rdev);
- act8931->rdev = NULL;
- return err;
+ return ret;
}
-int act8931_device_shutdown(void)
+void act8931_device_shutdown(void)
{
int ret;
- int err = -1;
struct act8931 *act8931 = g_act8931;
-
- printk("%s\n",__func__);
- ret = act8931_reg_read(act8931,0x01);
- ret = act8931_set_bits(act8931, 0x01,(0x1<<5) |(0x3<<0),(0x1<<5) | (0x3<<0));
- if (ret < 0) {
- printk("act8931 set 0x00 error!\n");
- return err;
- }
- return 0;
+ pr_info("%s\n", __func__);
+
+ ret = act8931_reg_read(act8931, 0x01);
+ ret = act8931_set_bits(act8931, 0x01, (0x1<<5) | (0x3<<0),
+ (0x1<<5) | (0x3<<0));
+ if (ret < 0)
+ pr_err("act8931 set 0x01 error!\n");
+
+ mdelay(100);
+ arm_pm_restart('h', "charge");
}
-EXPORT_SYMBOL_GPL(act8931_device_shutdown);
+#ifdef CONFIG_OF
+static struct of_device_id act8931_of_match[] = {
+ { .compatible = "act,act8931"},
+ { },
+};
+MODULE_DEVICE_TABLE(of, act8931_of_match);
+#endif
+
+#ifdef CONFIG_OF
+static struct of_regulator_match act8931_reg_matches[] = {
+ { .name = "act_dcdc1" },
+ { .name = "act_dcdc2" },
+ { .name = "act_dcdc3" },
+ { .name = "act_ldo1" },
+ { .name = "act_ldo2" },
+ { .name = "act_ldo3" },
+ { .name = "act_ldo4" },
+};
-static irqreturn_t act8931_irq_thread(unsigned int irq, void *dev_id)
+static struct act8931_board *act8931_parse_dt(struct act8931 *act8931)
+{
+ struct act8931_board *pdata;
+ struct device_node *regs;
+ struct device_node *node;
+ int i, count;
+
+ node = of_node_get(act8931->dev->of_node);
+ if (!node) {
+ pr_err("%s: could not find pmic node\n", __func__);
+ return NULL;
+ }
+
+ regs = of_get_child_by_name(node, "regulators");
+ if (!regs)
+ return NULL;
+
+ count = of_regulator_match(act8931->dev, regs, act8931_reg_matches,
+ ACT8931_NUM_REGULATORS);
+ of_node_put(regs);
+
+ if ((count < 0) || (count > ACT8931_NUM_REGULATORS))
+ return NULL;
+
+ pdata = devm_kzalloc(act8931->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ for (i = 0; i < count; i++) {
+ pdata->act8931_init_data[i] = act8931_reg_matches[i].init_data;
+ pdata->of_node[i] = act8931_reg_matches[i].of_node;
+ }
+
+ pdata->irq_gpio = of_get_named_gpio(node, "gpios", 0);
+ if (!gpio_is_valid(pdata->irq_gpio)) {
+ pr_err("%s: invalid gpio: %d\n", __func__, pdata->irq_gpio);
+ return NULL;
+ }
+
+ pdata->pwr_hold_gpio = of_get_named_gpio(node, "gpios", 1);
+ if (!gpio_is_valid(pdata->pwr_hold_gpio)) {
+ pr_err("%s: invalid gpio: %d\n", __func__,
+ pdata->pwr_hold_gpio);
+ return NULL;
+ }
+
+ pdata->pm_off = of_property_read_bool(node,
+ "act8931,system-power-controller");
+
+ return pdata;
+}
+#else
+static struct act8931_board *act8931_parse_dt(struct act8931 *act8931)
+{
+ return NULL;
+}
+#endif
+
+static irqreturn_t act8931_irq_thread(int irq, void *dev_id)
{
struct act8931 *act8931 = (struct act8931 *)dev_id;
int ret;
u8 val;
- val = act8931_reg_read(act8931,0x78);
- act8931_charge_det = (val & INDAT_MASK )? 1:0;
- act8931_charge_ok = (val & CHGDAT_MASK )? 1:0;
- DBG(charge_det? "connect! " : "disconnect! ");
- DBG(charge_ok? "charge ok! \n" : "charging or discharge! \n");
+
+ val = act8931_reg_read(act8931, 0x78);
+ act8931_charge_det = (val & INDAT_MASK) ? 1 : 0;
+ act8931_charge_ok = (val & CHGDAT_MASK) ? 1 : 0;
+ DBG(charge_det ? "connect!" : "disconnect!");
+ DBG(charge_ok ? "charge ok!\n" : "charging or discharge!\n");
/* reset related regs according to spec */
- ret = act8931_set_bits(act8931, 0x78, INSTAT_MASK | CHGSTAT_MASK,
- INSTAT_MASK | CHGSTAT_MASK);
- if (ret < 0) {
- printk("act8931 set 0x78 error!\n");
- }
+ ret = act8931_set_bits(act8931, 0x78, INSTAT_MASK | CHGSTAT_MASK,
+ INSTAT_MASK | CHGSTAT_MASK);
+ if (ret < 0)
+ pr_err("act8931 set 0x78 error!\n");
- /* FIXME: it's better that waking up screen in battery driver */
- rk28_send_wakeup_key();
return IRQ_HANDLED;
}
-#ifdef CONFIG_HAS_EARLYSUSPEND
-__weak void act8931_early_suspend(struct early_suspend *h) {}
-__weak void act8931_late_resume(struct early_suspend *h) {}
-#endif
-
-static int __devinit act8931_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
+static int act8931_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
{
- struct act8931 *act8931;
- struct act8931_platform_data *pdata = i2c->dev.platform_data;
- int ret;
+ const struct of_device_id *match;
+ struct act8931 *act8931;
+ struct act8931_board *pdata;
+ struct regulator_init_data *reg_data;
+ struct regulator_config config = { };
+ const char *rail_name = NULL;
+ struct regulator_dev *rdev;
u8 val;
- act8931 = kzalloc(sizeof(struct act8931), GFP_KERNEL);
+ int i, ret;
+
+ pr_info("%s,line=%d\n", __func__, __LINE__);
+
+ if (i2c->dev.of_node) {
+ match = of_match_device(act8931_of_match, &i2c->dev);
+ if (!match) {
+ pr_err("Failed to find matching dt id\n");
+ return -EINVAL;
+ }
+ }
+
+ act8931 = devm_kzalloc(&i2c->dev, sizeof(struct act8931), GFP_KERNEL);
if (act8931 == NULL) {
- ret = -ENOMEM;
+ ret = -ENOMEM;
goto err;
}
act8931->i2c = i2c;
act8931->dev = &i2c->dev;
- i2c_set_clientdata(i2c, act8931);
- mutex_init(&act8931->io_lock);
+ g_act8931 = act8931;
+
+ mutex_init(&act8931->io_lock);
- ret = act8931_reg_read(act8931,0x22);
- if ((ret < 0) || (ret == 0xff)){
- printk("The device is not act8931 \n");
+ ret = act8931_reg_read(act8931, 0x22);
+ if ((ret < 0) || (ret == 0xff)) {
+ pr_err("The device is not act8931\n");
return 0;
}
-
- if (pdata) {
- ret = setup_regulators(act8931, pdata);
- if (ret < 0)
- goto err;
- } else
- dev_warn(act8931->dev, "No platform init data supplied\n");
- ret = act8931_reg_read(act8931,0x01);
- if (ret < 0)
- goto err;
- ret = act8931_set_bits(act8931, 0x01,(0x1<<5) | (0x1<<0),(0x1<<0));
+ if (act8931->dev->of_node)
+ pdata = act8931_parse_dt(act8931);
+
+ ret = act8931_reg_read(act8931, 0x01);
+ if (ret < 0)
+ goto err;
+ ret = act8931_set_bits(act8931, 0x01, (0x1<<5) | (0x1<<0), (0x1<<0));
if (ret < 0) {
- printk("act8931 set 0x01 error!\n");
+ pr_err("act8931 set 0x01 error!\n");
goto err;
}
-
- g_act8931 = act8931;
-
- pdata->set_init(act8931);
/* Initialize charge status */
- val = act8931_reg_read(act8931,0x78);
- act8931_charge_det = (val & INDAT_MASK )? 1:0;
- act8931_charge_ok = (val & CHGDAT_MASK )? 1:0;
- DBG(charge_det? "connect! " : "disconnect! ");
- DBG(charge_ok? "charge ok! \n" : "charging or discharge! \n");
-
- ret = act8931_set_bits(act8931, 0x78, INSTAT_MASK | CHGSTAT_MASK,
- INSTAT_MASK | CHGSTAT_MASK);
+ val = act8931_reg_read(act8931, 0x78);
+ act8931_charge_det = (val & INDAT_MASK) ? 1 : 0;
+ act8931_charge_ok = (val & CHGDAT_MASK) ? 1 : 0;
+ DBG(charge_det ? "connect!" : "disconnect!");
+ DBG(charge_ok ? "charge ok!\n" : "charging or discharge!\n");
+
+ ret = act8931_set_bits(act8931, 0x78, INSTAT_MASK | CHGSTAT_MASK,
+ INSTAT_MASK | CHGSTAT_MASK);
if (ret < 0) {
- printk("act8931 set 0x78 error!\n");
+ pr_err("act8931 set 0x78 error!\n");
goto err;
}
-
- ret = act8931_set_bits(act8931, 0x79, INCON_MASK | CHGEOCIN_MASK | INDIS_MASK | CHGEOCOUT_MASK,
- INCON_MASK | CHGEOCIN_MASK | INDIS_MASK | CHGEOCOUT_MASK);
+
+ ret = act8931_set_bits(act8931, 0x79, INCON_MASK | CHGEOCIN_MASK
+ | INDIS_MASK | CHGEOCOUT_MASK, INCON_MASK
+ | CHGEOCIN_MASK | INDIS_MASK | CHGEOCOUT_MASK);
if (ret < 0) {
- printk("act8931 set 0x79 error!\n");
+ pr_err("act8931 set 0x79 error!\n");
goto err;
}
- ret = gpio_request(i2c->irq, "act8931 gpio");
- if(ret)
- {
- printk("act8931 gpio request fail\n");
- gpio_free(i2c->irq);
+ if (pdata) {
+ act8931->num_regulators = ACT8931_NUM_REGULATORS;
+ act8931->rdev = kcalloc(ACT8931_NUM_REGULATORS,
+ sizeof(struct regulator_dev *),
+ GFP_KERNEL);
+ if (!act8931->rdev)
+ return -ENOMEM;
+
+ /* Instantiate the regulators */
+ for (i = 0; i < ACT8931_NUM_REGULATORS; i++) {
+ reg_data = pdata->act8931_init_data[i];
+ if (!reg_data)
+ continue;
+ if (reg_data->constraints.name)
+ rail_name = reg_data->constraints.name;
+ else
+ rail_name = regulators[i].name;
+ reg_data->supply_regulator = rail_name;
+
+ config.dev = act8931->dev;
+ config.driver_data = act8931;
+ if (act8931->dev->of_node)
+ config.of_node = pdata->of_node[i];
+ config.init_data = reg_data;
+
+ rdev = regulator_register(®ulators[i], &config);
+ if (IS_ERR(rdev)) {
+ pr_err("failed to register %d regulator\n", i);
+ continue;
+ }
+ act8931->rdev[i] = rdev;
+ }
+ }
+
+ if (pdata->pm_off && !pm_power_off)
+ pm_power_off = act8931_device_shutdown;
+
+ act8931->pwr_hold_gpio = pdata->pwr_hold_gpio;
+ if (act8931->pwr_hold_gpio) {
+ ret = gpio_request(act8931->pwr_hold_gpio, "act8931 pmic_hold");
+ if (ret < 0) {
+ pr_err("Failed to request gpio %d with ret %d\n",
+ act8931->pwr_hold_gpio, ret);
+ goto err;
+ }
+ gpio_direction_output(act8931->pwr_hold_gpio, 1);
+ ret = gpio_get_value(act8931->pwr_hold_gpio);
+ pr_info("%s: act8931_pmic_hold=%x\n", __func__, ret);
+ }
+
+ ret = gpio_request(pdata->irq_gpio, "act8931 irq");
+ if (ret) {
+ pr_err("act8931 irq_gpio request fail\n");
+ gpio_free(pdata->irq_gpio);
goto err;
}
-
- act8931->irq = gpio_to_irq(i2c->irq);
- gpio_pull_updown(i2c->irq,GPIOPullUp);
+ gpio_direction_input(pdata->irq_gpio);
+
+ act8931->irq = gpio_to_irq(pdata->irq_gpio);
ret = request_threaded_irq(act8931->irq, NULL, act8931_irq_thread,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT, i2c->dev.driver->name, act8931);
- if (ret < 0)
- {
- printk("request act8931 irq fail\n");
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ i2c->dev.driver->name, act8931);
+ if (ret < 0) {
+ pr_err("request act8931 irq fail\n");
goto err;
- }
-
+ }
enable_irq_wake(act8931->irq);
- #ifdef CONFIG_HAS_EARLYSUSPEND
- act8931->act8931_suspend.suspend = act8931_early_suspend,
- act8931->act8931_suspend.resume = act8931_late_resume,
- act8931->act8931_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB + 1,
- register_early_suspend(&act8931->act8931_suspend);
- #endif
+ i2c_set_clientdata(i2c, act8931);
return 0;
err:
- return ret;
-
+ return ret;
}
-static int __devexit act8931_i2c_remove(struct i2c_client *i2c)
+static int act8931_i2c_remove(struct i2c_client *i2c)
{
struct act8931 *act8931 = i2c_get_clientdata(i2c);
int i;
}
static const struct i2c_device_id act8931_i2c_id[] = {
- { "act8931", 0 },
- { }
+ { "act8931", 0 },
+ { }
};
-
MODULE_DEVICE_TABLE(i2c, act8931_i2c_id);
static struct i2c_driver act8931_i2c_driver = {
.driver = {
.name = "act8931",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(act8931_of_match),
},
.probe = act8931_i2c_probe,
- .remove = __devexit_p(act8931_i2c_remove),
+ .remove = act8931_i2c_remove,
.id_table = act8931_i2c_id,
};
static int __init act8931_module_init(void)
{
int ret;
+
ret = i2c_add_driver(&act8931_i2c_driver);
if (ret != 0)
pr_err("Failed to register I2C driver: %d\n", ret);
return ret;
}
-//module_init(act8931_module_init);
-//subsys_initcall(act8931_module_init);
-//rootfs_initcall(act8931_module_init);
subsys_initcall_sync(act8931_module_init);
static void __exit act8931_module_exit(void)
module_exit(act8931_module_exit);
MODULE_LICENSE("GPL");
-MODULE_AUTHOR("xhc <xhc@rock-chips.com>");
+MODULE_AUTHOR("dkl <dkl@rock-chips.com>");
MODULE_DESCRIPTION("act8931 PMIC driver");
-
-
projects / firefly-linux-kernel-4.4.55.git / commitdiff