diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2015-08-16 03:02:09 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2015-08-17 21:55:55 +0300 |
| commit | 8582bcc8ebb21375b37f337c58ca783b997a0355 (patch) | |
| tree | daf94b261cbb8b9658b4dcedde594a5a6de920f4 /drivers/hwmon/pmbus/ltc2978.c | |
| parent | 2238835c5ce9f8eae5cb4dd6a6c05a6c82743282 (diff) | |
| download | linux-8582bcc8ebb21375b37f337c58ca783b997a0355.tar.xz | |
hwmon: (ltc2978) Introduce feature flags
It is becoming cumbersom to track per-chip feature support.
Introduce feature flag to simplify the code.
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/pmbus/ltc2978.c')
| -rw-r--r-- | drivers/hwmon/pmbus/ltc2978.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index e153ffd59ab0..48cbb5794e30 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -97,10 +97,14 @@ struct ltc2978_data { u16 pin_min, pin_max; u16 temp2_max; struct pmbus_driver_info info; + u32 features; }; - #define to_ltc2978_data(x) container_of(x, struct ltc2978_data, info) +#define FEAT_CLEAR_PEAKS BIT(0) + +#define has_clear_peaks(d) ((d)->features & FEAT_CLEAR_PEAKS) + static inline int lin11_to_val(int data) { s16 e = ((s16)data) >> 11; @@ -374,13 +378,12 @@ static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg) return ret; } -static int ltc2978_clear_peaks(struct i2c_client *client, int page, - enum chips id) +static int ltc2978_clear_peaks(struct ltc2978_data *data, + struct i2c_client *client, int page) { int ret; - if (id == ltc3880 || id == ltc3882 || id == ltc3883 || id == ltc3887 || - id == ltm4676) + if (has_clear_peaks(data)) ret = pmbus_write_byte(client, 0, LTC3880_MFR_CLEAR_PEAKS); else ret = pmbus_write_byte(client, page, PMBUS_CLEAR_FAULTS); @@ -399,36 +402,36 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, case PMBUS_VIRT_RESET_IIN_HISTORY: data->iin_max = 0x7c00; data->iin_min = 0x7bff; - ret = ltc2978_clear_peaks(client, 0, data->id); + ret = ltc2978_clear_peaks(data, client, 0); break; case PMBUS_VIRT_RESET_PIN_HISTORY: data->pin_max = 0x7c00; data->pin_min = 0x7bff; - ret = ltc2978_clear_peaks(client, 0, data->id); + ret = ltc2978_clear_peaks(data, client, 0); break; case PMBUS_VIRT_RESET_IOUT_HISTORY: data->iout_max[page] = 0x7c00; data->iout_min[page] = 0xfbff; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_TEMP2_HISTORY: data->temp2_max = 0x7c00; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_VOUT_HISTORY: data->vout_min[page] = 0xffff; data->vout_max[page] = 0; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_VIN_HISTORY: data->vin_min = 0x7bff; data->vin_max = 0x7c00; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_TEMP_HISTORY: data->temp_min[page] = 0x7bff; data->temp_max[page] = 0x7c00; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; default: ret = -ENODATA; @@ -603,6 +606,7 @@ static int ltc2978_probe(struct i2c_client *client, case ltc3880: case ltc3887: case ltm4676: + data->features |= FEAT_CLEAR_PEAKS; info->read_word_data = ltc3880_read_word_data; info->pages = LTC3880_NUM_PAGES; info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN @@ -617,6 +621,7 @@ static int ltc2978_probe(struct i2c_client *client, | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; break; case ltc3882: + data->features |= FEAT_CLEAR_PEAKS; info->read_word_data = ltc3880_read_word_data; info->pages = LTC3880_NUM_PAGES; info->func[0] = PMBUS_HAVE_VIN @@ -631,6 +636,7 @@ static int ltc2978_probe(struct i2c_client *client, | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; break; case ltc3883: + data->features |= FEAT_CLEAR_PEAKS; info->read_word_data = ltc3883_read_word_data; info->pages = LTC3883_NUM_PAGES; info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |