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drivers/power/ds2780_battery.c: create central point for calling w1 interface
Simply creates one point to call the w1 interface. Signed-off-by: Clifton Barnes <cabarnes@indesign-llc.com> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: <stable@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
3e5428177c
commit
853eee72f7
1 changed files with 42 additions and 35 deletions
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@ -49,8 +49,8 @@ enum current_types {
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static const char model[] = "DS2780";
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static const char manufacturer[] = "Maxim/Dallas";
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static inline struct ds2780_device_info *to_ds2780_device_info(
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struct power_supply *psy)
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static inline struct ds2780_device_info *
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to_ds2780_device_info(struct power_supply *psy)
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{
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return container_of(psy, struct ds2780_device_info, bat);
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}
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@ -60,17 +60,25 @@ static inline struct power_supply *to_power_supply(struct device *dev)
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return dev_get_drvdata(dev);
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}
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static inline int ds2780_read8(struct device *dev, u8 *val, int addr)
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static inline int ds2780_battery_io(struct ds2780_device_info *dev_info,
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char *buf, int addr, size_t count, int io)
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{
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return w1_ds2780_io(dev, val, addr, sizeof(u8), 0);
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return w1_ds2780_io(dev_info->w1_dev, buf, addr, count, io);
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}
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static int ds2780_read16(struct device *dev, s16 *val, int addr)
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static inline int ds2780_read8(struct ds2780_device_info *dev_info, u8 *val,
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int addr)
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{
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return ds2780_battery_io(dev_info, val, addr, sizeof(u8), 0);
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}
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static int ds2780_read16(struct ds2780_device_info *dev_info, s16 *val,
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int addr)
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{
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int ret;
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u8 raw[2];
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ret = w1_ds2780_io(dev, raw, addr, sizeof(u8) * 2, 0);
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ret = ds2780_battery_io(dev_info, raw, addr, sizeof(raw), 0);
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if (ret < 0)
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return ret;
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@ -79,16 +87,16 @@ static int ds2780_read16(struct device *dev, s16 *val, int addr)
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return 0;
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}
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static inline int ds2780_read_block(struct device *dev, u8 *val, int addr,
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size_t count)
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static inline int ds2780_read_block(struct ds2780_device_info *dev_info,
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u8 *val, int addr, size_t count)
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{
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return w1_ds2780_io(dev, val, addr, count, 0);
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return ds2780_battery_io(dev_info, val, addr, count, 0);
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}
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static inline int ds2780_write(struct device *dev, u8 *val, int addr,
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size_t count)
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static inline int ds2780_write(struct ds2780_device_info *dev_info, u8 *val,
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int addr, size_t count)
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{
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return w1_ds2780_io(dev, val, addr, count, 1);
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return ds2780_battery_io(dev_info, val, addr, count, 1);
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}
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static inline int ds2780_store_eeprom(struct device *dev, int addr)
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@ -122,7 +130,7 @@ static int ds2780_set_sense_register(struct ds2780_device_info *dev_info,
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{
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int ret;
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ret = ds2780_write(dev_info->w1_dev, &conductance,
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ret = ds2780_write(dev_info, &conductance,
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DS2780_RSNSP_REG, sizeof(u8));
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if (ret < 0)
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return ret;
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@ -134,7 +142,7 @@ static int ds2780_set_sense_register(struct ds2780_device_info *dev_info,
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static int ds2780_get_rsgain_register(struct ds2780_device_info *dev_info,
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u16 *rsgain)
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{
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return ds2780_read16(dev_info->w1_dev, rsgain, DS2780_RSGAIN_MSB_REG);
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return ds2780_read16(dev_info, rsgain, DS2780_RSGAIN_MSB_REG);
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}
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/* Set RSGAIN value from 0 to 1.999 in steps of 0.001 */
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@ -144,8 +152,8 @@ static int ds2780_set_rsgain_register(struct ds2780_device_info *dev_info,
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int ret;
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u8 raw[] = {rsgain >> 8, rsgain & 0xFF};
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ret = ds2780_write(dev_info->w1_dev, raw,
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DS2780_RSGAIN_MSB_REG, sizeof(u8) * 2);
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ret = ds2780_write(dev_info, raw,
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DS2780_RSGAIN_MSB_REG, sizeof(raw));
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if (ret < 0)
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return ret;
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@ -167,7 +175,7 @@ static int ds2780_get_voltage(struct ds2780_device_info *dev_info,
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* Bits 2 - 0 of the voltage value are in bits 7 - 5 of the
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* voltage LSB register
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*/
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ret = ds2780_read16(dev_info->w1_dev, &voltage_raw,
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ret = ds2780_read16(dev_info, &voltage_raw,
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DS2780_VOLT_MSB_REG);
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if (ret < 0)
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return ret;
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@ -196,7 +204,7 @@ static int ds2780_get_temperature(struct ds2780_device_info *dev_info,
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* Bits 2 - 0 of the temperature value are in bits 7 - 5 of the
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* temperature LSB register
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*/
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ret = ds2780_read16(dev_info->w1_dev, &temperature_raw,
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ret = ds2780_read16(dev_info, &temperature_raw,
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DS2780_TEMP_MSB_REG);
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if (ret < 0)
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return ret;
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@ -222,13 +230,13 @@ static int ds2780_get_current(struct ds2780_device_info *dev_info,
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* The units of measurement for current are dependent on the value of
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* the sense resistor.
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*/
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ret = ds2780_read8(dev_info->w1_dev, &sense_res_raw, DS2780_RSNSP_REG);
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ret = ds2780_read8(dev_info, &sense_res_raw, DS2780_RSNSP_REG);
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if (ret < 0)
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return ret;
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if (sense_res_raw == 0) {
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dev_err(dev_info->dev, "sense resistor value is 0\n");
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return -ENXIO;
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return -EINVAL;
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}
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sense_res = 1000 / sense_res_raw;
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@ -248,7 +256,7 @@ static int ds2780_get_current(struct ds2780_device_info *dev_info,
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* Bits 7 - 0 of the current value are in bits 7 - 0 of the current
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* LSB register
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*/
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ret = ds2780_read16(dev_info->w1_dev, ¤t_raw, reg_msb);
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ret = ds2780_read16(dev_info, ¤t_raw, reg_msb);
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if (ret < 0)
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return ret;
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@ -267,7 +275,7 @@ static int ds2780_get_accumulated_current(struct ds2780_device_info *dev_info,
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* The units of measurement for accumulated current are dependent on
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* the value of the sense resistor.
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*/
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ret = ds2780_read8(dev_info->w1_dev, &sense_res_raw, DS2780_RSNSP_REG);
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ret = ds2780_read8(dev_info, &sense_res_raw, DS2780_RSNSP_REG);
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if (ret < 0)
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return ret;
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@ -285,7 +293,7 @@ static int ds2780_get_accumulated_current(struct ds2780_device_info *dev_info,
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* Bits 7 - 0 of the ACR value are in bits 7 - 0 of the ACR
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* LSB register
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*/
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ret = ds2780_read16(dev_info->w1_dev, ¤t_raw, DS2780_ACR_MSB_REG);
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ret = ds2780_read16(dev_info, ¤t_raw, DS2780_ACR_MSB_REG);
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if (ret < 0)
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return ret;
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@ -299,7 +307,7 @@ static int ds2780_get_capacity(struct ds2780_device_info *dev_info,
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int ret;
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u8 raw;
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ret = ds2780_read8(dev_info->w1_dev, &raw, DS2780_RARC_REG);
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ret = ds2780_read8(dev_info, &raw, DS2780_RARC_REG);
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if (ret < 0)
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return ret;
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@ -345,7 +353,7 @@ static int ds2780_get_charge_now(struct ds2780_device_info *dev_info,
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* Bits 7 - 0 of the RAAC value are in bits 7 - 0 of the RAAC
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* LSB register
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*/
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ret = ds2780_read16(dev_info->w1_dev, &charge_raw, DS2780_RAAC_MSB_REG);
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ret = ds2780_read16(dev_info, &charge_raw, DS2780_RAAC_MSB_REG);
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if (ret < 0)
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return ret;
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@ -356,7 +364,7 @@ static int ds2780_get_charge_now(struct ds2780_device_info *dev_info,
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static int ds2780_get_control_register(struct ds2780_device_info *dev_info,
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u8 *control_reg)
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{
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return ds2780_read8(dev_info->w1_dev, control_reg, DS2780_CONTROL_REG);
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return ds2780_read8(dev_info, control_reg, DS2780_CONTROL_REG);
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}
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static int ds2780_set_control_register(struct ds2780_device_info *dev_info,
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@ -364,7 +372,7 @@ static int ds2780_set_control_register(struct ds2780_device_info *dev_info,
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{
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int ret;
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ret = ds2780_write(dev_info->w1_dev, &control_reg,
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ret = ds2780_write(dev_info, &control_reg,
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DS2780_CONTROL_REG, sizeof(u8));
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if (ret < 0)
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return ret;
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@ -503,7 +511,7 @@ static ssize_t ds2780_get_sense_resistor_value(struct device *dev,
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struct power_supply *psy = to_power_supply(dev);
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struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
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ret = ds2780_read8(dev_info->w1_dev, &sense_resistor, DS2780_RSNSP_REG);
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ret = ds2780_read8(dev_info, &sense_resistor, DS2780_RSNSP_REG);
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if (ret < 0)
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return ret;
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@ -584,7 +592,7 @@ static ssize_t ds2780_get_pio_pin(struct device *dev,
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struct power_supply *psy = to_power_supply(dev);
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struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
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ret = ds2780_read8(dev_info->w1_dev, &sfr, DS2780_SFR_REG);
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ret = ds2780_read8(dev_info, &sfr, DS2780_SFR_REG);
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if (ret < 0)
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return ret;
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@ -611,7 +619,7 @@ static ssize_t ds2780_set_pio_pin(struct device *dev,
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return -EINVAL;
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}
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ret = ds2780_write(dev_info->w1_dev, &new_setting,
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ret = ds2780_write(dev_info, &new_setting,
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DS2780_SFR_REG, sizeof(u8));
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if (ret < 0)
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return ret;
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@ -632,7 +640,7 @@ static ssize_t ds2780_read_param_eeprom_bin(struct file *filp,
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DS2780_EEPROM_BLOCK1_END -
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DS2780_EEPROM_BLOCK1_START + 1 - off);
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return ds2780_read_block(dev_info->w1_dev, buf,
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return ds2780_read_block(dev_info, buf,
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DS2780_EEPROM_BLOCK1_START + off, count);
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}
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@ -650,7 +658,7 @@ static ssize_t ds2780_write_param_eeprom_bin(struct file *filp,
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DS2780_EEPROM_BLOCK1_END -
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DS2780_EEPROM_BLOCK1_START + 1 - off);
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ret = ds2780_write(dev_info->w1_dev, buf,
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ret = ds2780_write(dev_info, buf,
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DS2780_EEPROM_BLOCK1_START + off, count);
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if (ret < 0)
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return ret;
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DS2780_EEPROM_BLOCK0_END -
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DS2780_EEPROM_BLOCK0_START + 1 - off);
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return ds2780_read_block(dev_info->w1_dev, buf,
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return ds2780_read_block(dev_info, buf,
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DS2780_EEPROM_BLOCK0_START + off, count);
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}
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static ssize_t ds2780_write_user_eeprom_bin(struct file *filp,
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DS2780_EEPROM_BLOCK0_END -
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DS2780_EEPROM_BLOCK0_START + 1 - off);
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ret = ds2780_write(dev_info->w1_dev, buf,
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ret = ds2780_write(dev_info, buf,
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DS2780_EEPROM_BLOCK0_START + off, count);
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if (ret < 0)
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return ret;
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