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| author | Axel Lin <axel.lin@ingics.com> | 2013-07-30 10:46:28 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-07-30 11:20:00 +0100 |
| commit | d9493234e20e8153495fa118b60bdff22fdfc6c8 (patch) | |
| tree | c4e93d3ee4d3eb110b7ef0b81046cf2026acc301 /drivers/regulator/pfuze100-regulator.c | |
| parent | 2e04cc41a6d7a561568f3802b61d0987f1ec7e9a (diff) | |
| download | talos-obmc-linux-d9493234e20e8153495fa118b60bdff22fdfc6c8.tar.gz talos-obmc-linux-d9493234e20e8153495fa118b60bdff22fdfc6c8.zip | |
regulator: pfuze100: Fix n_voltages setting for SW2~SW4 with high bit set
Current code adjust min_uV and uV_step but missed adjusting the n_voltages
setting.
When BIT6 is clear:
n_voltages = (1975000 - 400000) / 25000 + 1 = 64
When BIT6 is set:
n_voltages = (3300000 - 800000) / 50000 + 1 = 51
The n_voltages needs update because when BIT6 is set 0x73 ~ 0x7f are reserved.
When using regulator_list_voltage_linear, the n_voltages does matter here
because wrong n_voltages setting make the equation return wrong result.
e.g. if selector is 63, regulator_list_voltage_linear returns
800000 + (50000 * 63) = 4000000
It should return -EINVAL if the selector is in the range of 51 ~ 63.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/pfuze100-regulator.c')
| -rw-r--r-- | drivers/regulator/pfuze100-regulator.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c index 7b24acb66a18..e02d9b921ed3 100644 --- a/drivers/regulator/pfuze100-regulator.c +++ b/drivers/regulator/pfuze100-regulator.c @@ -388,8 +388,11 @@ static int pfuze100_regulator_probe(struct i2c_client *client, for (i = 0; i < PFUZE100_MAX_REGULATOR; i++) { struct regulator_init_data *init_data; + struct regulator_desc *desc; int val; + desc = &pfuze_chip->regulator_descs[i].desc; + if (pdata) init_data = pdata->init_data[i]; else @@ -397,13 +400,11 @@ static int pfuze100_regulator_probe(struct i2c_client *client, /* SW2~SW4 high bit check and modify the voltage value table */ if (i > PFUZE100_SW1C && i < PFUZE100_SWBST) { - regmap_read(pfuze_chip->regmap, PFUZE100_SW2VOL + - (i - PFUZE100_SW2) * 7, &val); + regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val); if (val & 0x40) { - pfuze_chip->regulator_descs[i].desc.min_uV - = 800000; - pfuze_chip->regulator_descs[i].desc.uV_step - = 50000; + desc->min_uV = 800000; + desc->uV_step = 50000; + desc->n_voltages = 51; } } @@ -412,8 +413,7 @@ static int pfuze100_regulator_probe(struct i2c_client *client, config.driver_data = pfuze_chip; config.of_node = match_of_node(i); - pfuze_chip->regulators[i] = regulator_register(&pfuze_chip - ->regulator_descs[i].desc, &config); + pfuze_chip->regulators[i] = regulator_register(desc, &config); if (IS_ERR(pfuze_chip->regulators[i])) { dev_err(&client->dev, "register regulator%s failed\n", pfuze100_regulators[i].desc.name); |
