diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2019-08-08 19:28:51 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2019-09-03 12:47:17 -0700 |
| commit | d7a85cde90ed9f53a233e211d7cba99d10d1146b (patch) | |
| tree | f6a0594f37620c57afa4888e56d8149c8d50e967 /drivers | |
| parent | cee04a013a4a4f7556b32bb6c33b3d6f1bd264c9 (diff) | |
hwmon: (lm75) Add support for writing sampling period on PCT2075
For PCT7027, the sampling period is configured using a dedicated
register.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hwmon/lm75.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index ce0f6c671b8f..d45e5cc4adf5 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -95,6 +95,7 @@ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c, #define LM75_REG_CONF 0x01 #define LM75_REG_HYST 0x02 #define LM75_REG_MAX 0x03 +#define PCT2075_REG_IDLE 0x04 /* Each client has this additional data */ struct lm75_data { @@ -199,6 +200,11 @@ static const struct lm75_params device_params[] = { [pct2075] = { .default_resolution = 11, .default_sample_time = MSEC_PER_SEC / 10, + .num_sample_times = 31, + .sample_times = (unsigned int []){ 100, 200, 300, 400, 500, 600, + 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, + 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700, + 2800, 2900, 3000, 3100 }, }, [mcp980x] = { .set_mask = 3 << 5, /* 12-bit mode */ @@ -422,6 +428,13 @@ static int lm75_update_interval(struct device *dev, long val) return err; data->sample_time = data->params->sample_times[index]; break; + case pct2075: + err = i2c_smbus_write_byte_data(data->client, PCT2075_REG_IDLE, + index + 1); + if (err) + return err; + data->sample_time = data->params->sample_times[index]; + break; } return 0; } @@ -512,7 +525,7 @@ static bool lm75_is_volatile_reg(struct device *dev, unsigned int reg) static const struct regmap_config lm75_regmap_config = { .reg_bits = 8, .val_bits = 16, - .max_register = LM75_REG_MAX, + .max_register = PCT2075_REG_IDLE, .writeable_reg = lm75_is_writeable_reg, .volatile_reg = lm75_is_volatile_reg, .val_format_endian = REGMAP_ENDIAN_BIG, |