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authorBeomho Seo <beomho.seo@samsung.com>2015-04-03 17:26:08 +0900
committerSebastian Reichel <sre@kernel.org>2015-04-06 17:46:27 +0200
commit709c2c70c8ea73f488971f1de3c39fbdac995951 (patch)
treed9e71388036e98b7e6752a813e354bc499227f31 /drivers/power/max17042_battery.c
parent7be5ac2c32bd26c47a05367c0135cb6e67b3d452 (diff)
downloadlinux-709c2c70c8ea73f488971f1de3c39fbdac995951.tar.bz2
power: max17042_battery: Use reg type instead of chip type
Currently, max17042 battery driver choose register map by MAX17042_DevName register. But it is return IC specific firmware version. So other maxim chip hard to use this drvier. This patch choose chip type from driver_data. Signed-off-by: Beomho Seo <beomho.seo@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power/max17042_battery.c')
-rw-r--r--drivers/power/max17042_battery.c33
1 files changed, 10 insertions, 23 deletions
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
index e5645ea6f9d8..bf5a82c9370e 100644
--- a/drivers/power/max17042_battery.c
+++ b/drivers/power/max17042_battery.c
@@ -63,9 +63,6 @@
#define dP_ACC_100 0x1900
#define dP_ACC_200 0x3200
-#define MAX17042_IC_VERSION 0x0092
-#define MAX17047_IC_VERSION 0x00AC /* same for max17050 */
-
struct max17042_chip {
struct i2c_client *client;
struct regmap *regmap;
@@ -131,7 +128,7 @@ static int max17042_get_property(struct power_supply *psy,
val->intval *= 20000; /* Units of LSB = 20mV */
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
- if (chip->chip_type == MAX17042)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
ret = regmap_read(map, MAX17042_V_empty, &data);
else
ret = regmap_read(map, MAX17047_V_empty, &data);
@@ -378,7 +375,8 @@ static void max17042_write_config_regs(struct max17042_chip *chip)
regmap_write(map, MAX17042_FilterCFG,
config->filter_cfg);
regmap_write(map, MAX17042_RelaxCFG, config->relax_cfg);
- if (chip->chip_type == MAX17047)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17047 ||
+ chip->chip_type == MAXIM_DEVICE_TYPE_MAX17050)
regmap_write(map, MAX17047_FullSOCThr,
config->full_soc_thresh);
}
@@ -391,7 +389,7 @@ static void max17042_write_custom_regs(struct max17042_chip *chip)
max17042_write_verify_reg(map, MAX17042_RCOMP0, config->rcomp0);
max17042_write_verify_reg(map, MAX17042_TempCo, config->tcompc0);
max17042_write_verify_reg(map, MAX17042_ICHGTerm, config->ichgt_term);
- if (chip->chip_type == MAX17042) {
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042) {
regmap_write(map, MAX17042_EmptyTempCo, config->empty_tempco);
max17042_write_verify_reg(map, MAX17042_K_empty0,
config->kempty0);
@@ -500,14 +498,14 @@ static inline void max17042_override_por_values(struct max17042_chip *chip)
max17042_override_por(map, MAX17042_FullCAP, config->fullcap);
max17042_override_por(map, MAX17042_FullCAPNom, config->fullcapnom);
- if (chip->chip_type == MAX17042)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
max17042_override_por(map, MAX17042_SOC_empty,
config->socempty);
max17042_override_por(map, MAX17042_LAvg_empty, config->lavg_empty);
max17042_override_por(map, MAX17042_dQacc, config->dqacc);
max17042_override_por(map, MAX17042_dPacc, config->dpacc);
- if (chip->chip_type == MAX17042)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
max17042_override_por(map, MAX17042_V_empty, config->vempty);
else
max17042_override_por(map, MAX17047_V_empty, config->vempty);
@@ -709,20 +707,9 @@ static int max17042_probe(struct i2c_client *client,
}
i2c_set_clientdata(client, chip);
+ chip->chip_type = id->driver_data;
psy_cfg.drv_data = chip;
- regmap_read(chip->regmap, MAX17042_DevName, &val);
- if (val == MAX17042_IC_VERSION) {
- dev_dbg(&client->dev, "chip type max17042 detected\n");
- chip->chip_type = MAX17042;
- } else if (val == MAX17047_IC_VERSION) {
- dev_dbg(&client->dev, "chip type max17047/50 detected\n");
- chip->chip_type = MAX17047;
- } else {
- dev_err(&client->dev, "device version mismatch: %x\n", val);
- return -EIO;
- }
-
/* When current is not measured,
* CURRENT_NOW and CURRENT_AVG properties should be invisible. */
if (!chip->pdata->enable_current_sense)
@@ -834,9 +821,9 @@ MODULE_DEVICE_TABLE(of, max17042_dt_match);
#endif
static const struct i2c_device_id max17042_id[] = {
- { "max17042", 0 },
- { "max17047", 1 },
- { "max17050", 2 },
+ { "max17042", MAXIM_DEVICE_TYPE_MAX17042 },
+ { "max17047", MAXIM_DEVICE_TYPE_MAX17047 },
+ { "max17050", MAXIM_DEVICE_TYPE_MAX17050 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max17042_id);