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mfd: Use regmap for tps6586x register access.
Using regmap apis for accessing the device registers. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Laxman Dewangan
Samuel Ortiz
parent
b6719412dc
commit
1176b5be67
@ -200,6 +200,7 @@ config MFD_TPS6586X
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bool "TPS6586x Power Management chips"
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depends on I2C=y && GPIOLIB && GENERIC_HARDIRQS
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select MFD_CORE
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select REGMAP_I2C
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depends on REGULATOR
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help
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If you say yes here you get support for the TPS6586X series of
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@ -21,8 +21,10 @@
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/mfd/core.h>
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@ -48,6 +50,9 @@
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/* device id */
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#define TPS6586X_VERSIONCRC 0xcd
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/* Maximum register */
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#define TPS6586X_MAX_REGISTER (TPS6586X_VERSIONCRC + 1)
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struct tps6586x_irq_data {
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u8 mask_reg;
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u8 mask_mask;
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@ -90,9 +95,9 @@ static const struct tps6586x_irq_data tps6586x_irqs[] = {
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};
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struct tps6586x {
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struct mutex lock;
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struct device *dev;
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struct i2c_client *client;
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struct regmap *regmap;
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struct gpio_chip gpio;
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struct irq_chip irq_chip;
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@ -103,152 +108,69 @@ struct tps6586x {
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u8 mask_reg[5];
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};
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static inline int __tps6586x_read(struct i2c_client *client,
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int reg, uint8_t *val)
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static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
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{
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int ret;
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ret = i2c_smbus_read_byte_data(client, reg);
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if (ret < 0) {
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dev_err(&client->dev, "failed reading at 0x%02x\n", reg);
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return ret;
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}
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*val = (uint8_t)ret;
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return 0;
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}
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static inline int __tps6586x_reads(struct i2c_client *client, int reg,
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int len, uint8_t *val)
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{
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int ret;
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ret = i2c_smbus_read_i2c_block_data(client, reg, len, val);
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if (ret < 0) {
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dev_err(&client->dev, "failed reading from 0x%02x\n", reg);
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return ret;
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}
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return 0;
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}
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static inline int __tps6586x_write(struct i2c_client *client,
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int reg, uint8_t val)
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{
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int ret;
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ret = i2c_smbus_write_byte_data(client, reg, val);
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if (ret < 0) {
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dev_err(&client->dev, "failed writing 0x%02x to 0x%02x\n",
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val, reg);
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return ret;
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}
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return 0;
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}
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static inline int __tps6586x_writes(struct i2c_client *client, int reg,
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int len, uint8_t *val)
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{
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int ret, i;
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for (i = 0; i < len; i++) {
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ret = __tps6586x_write(client, reg + i, *(val + i));
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if (ret < 0)
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return ret;
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}
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return 0;
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return i2c_get_clientdata(to_i2c_client(dev));
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}
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int tps6586x_write(struct device *dev, int reg, uint8_t val)
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{
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return __tps6586x_write(to_i2c_client(dev), reg, val);
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struct tps6586x *tps6586x = dev_to_tps6586x(dev);
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return regmap_write(tps6586x->regmap, reg, val);
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}
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EXPORT_SYMBOL_GPL(tps6586x_write);
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int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val)
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{
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return __tps6586x_writes(to_i2c_client(dev), reg, len, val);
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struct tps6586x *tps6586x = dev_to_tps6586x(dev);
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return regmap_bulk_write(tps6586x->regmap, reg, val, len);
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}
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EXPORT_SYMBOL_GPL(tps6586x_writes);
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int tps6586x_read(struct device *dev, int reg, uint8_t *val)
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{
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return __tps6586x_read(to_i2c_client(dev), reg, val);
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struct tps6586x *tps6586x = dev_to_tps6586x(dev);
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unsigned int rval;
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int ret;
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ret = regmap_read(tps6586x->regmap, reg, &rval);
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if (!ret)
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*val = rval;
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return ret;
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}
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EXPORT_SYMBOL_GPL(tps6586x_read);
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int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val)
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{
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return __tps6586x_reads(to_i2c_client(dev), reg, len, val);
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struct tps6586x *tps6586x = dev_to_tps6586x(dev);
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return regmap_bulk_read(tps6586x->regmap, reg, val, len);
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}
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EXPORT_SYMBOL_GPL(tps6586x_reads);
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int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
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{
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struct tps6586x *tps6586x = dev_get_drvdata(dev);
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uint8_t reg_val;
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int ret = 0;
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struct tps6586x *tps6586x = dev_to_tps6586x(dev);
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mutex_lock(&tps6586x->lock);
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ret = __tps6586x_read(to_i2c_client(dev), reg, ®_val);
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if (ret)
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goto out;
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if ((reg_val & bit_mask) != bit_mask) {
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reg_val |= bit_mask;
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ret = __tps6586x_write(to_i2c_client(dev), reg, reg_val);
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}
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out:
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mutex_unlock(&tps6586x->lock);
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return ret;
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return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
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}
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EXPORT_SYMBOL_GPL(tps6586x_set_bits);
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int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
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{
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struct tps6586x *tps6586x = dev_get_drvdata(dev);
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uint8_t reg_val;
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int ret = 0;
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struct tps6586x *tps6586x = dev_to_tps6586x(dev);
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mutex_lock(&tps6586x->lock);
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ret = __tps6586x_read(to_i2c_client(dev), reg, ®_val);
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if (ret)
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goto out;
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if (reg_val & bit_mask) {
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reg_val &= ~bit_mask;
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ret = __tps6586x_write(to_i2c_client(dev), reg, reg_val);
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}
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out:
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mutex_unlock(&tps6586x->lock);
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return ret;
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return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
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}
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EXPORT_SYMBOL_GPL(tps6586x_clr_bits);
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int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
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{
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struct tps6586x *tps6586x = dev_get_drvdata(dev);
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uint8_t reg_val;
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int ret = 0;
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struct tps6586x *tps6586x = dev_to_tps6586x(dev);
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mutex_lock(&tps6586x->lock);
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ret = __tps6586x_read(tps6586x->client, reg, ®_val);
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if (ret)
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goto out;
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if ((reg_val & mask) != val) {
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reg_val = (reg_val & ~mask) | val;
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ret = __tps6586x_write(tps6586x->client, reg, reg_val);
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}
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out:
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mutex_unlock(&tps6586x->lock);
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return ret;
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return regmap_update_bits(tps6586x->regmap, reg, mask, val);
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}
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EXPORT_SYMBOL_GPL(tps6586x_update);
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@ -258,7 +180,7 @@ static int tps6586x_gpio_get(struct gpio_chip *gc, unsigned offset)
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uint8_t val;
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int ret;
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ret = __tps6586x_read(tps6586x->client, TPS6586X_GPIOSET2, &val);
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ret = tps6586x_read(tps6586x->dev, TPS6586X_GPIOSET2, &val);
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if (ret)
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return ret;
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@ -556,6 +478,12 @@ static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *clien
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}
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#endif
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static const struct regmap_config tps6586x_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = TPS6586X_MAX_REGISTER - 1,
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};
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static int __devinit tps6586x_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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@ -589,7 +517,14 @@ static int __devinit tps6586x_i2c_probe(struct i2c_client *client,
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tps6586x->dev = &client->dev;
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i2c_set_clientdata(client, tps6586x);
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mutex_init(&tps6586x->lock);
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tps6586x->regmap = devm_regmap_init_i2c(client,
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&tps6586x_regmap_config);
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if (IS_ERR(tps6586x->regmap)) {
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ret = PTR_ERR(tps6586x->regmap);
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dev_err(&client->dev, "regmap init failed: %d\n", ret);
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return ret;
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}
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if (client->irq) {
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ret = tps6586x_irq_init(tps6586x, client->irq,
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