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author | Jean Delvare <khali@linux-fr.org> | 2010-11-15 21:38:57 +0100 |
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committer | Jean Delvare <khali@endymion.delvare> | 2010-11-15 21:38:57 +0100 |
commit | 52d159eecced3e4ead901e2a14347f5c11ea4bab (patch) | |
tree | 64b1e2f4bebba1a5580a4db5514c62535ddc2fd2 /drivers/hwmon/w83795.c | |
parent | 793c51d5fdfa76043f1221fdaa022f50146e8386 (diff) | |
download | linux-stable-52d159eecced3e4ead901e2a14347f5c11ea4bab.tar.gz linux-stable-52d159eecced3e4ead901e2a14347f5c11ea4bab.tar.bz2 linux-stable-52d159eecced3e4ead901e2a14347f5c11ea4bab.zip |
hwmon: (w83795) Check for BEEP pin availability
On the W83795ADG, there's a single pin for BEEP and OVT#, so you
can't have both. Check the configuration and don't create beep
attributes when BEEP pin is not available.
The W83795G has a dedicated BEEP pin so the functionality is always
available there.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'drivers/hwmon/w83795.c')
-rw-r--r-- | drivers/hwmon/w83795.c | 58 |
1 files changed, 51 insertions, 7 deletions
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c index 90f4ffb357b7..cdbc7448491e 100644 --- a/drivers/hwmon/w83795.c +++ b/drivers/hwmon/w83795.c @@ -171,6 +171,9 @@ static const u8 IN_LSB_SHIFT_IDX[][2] = { #define W83795_REG_CLR_CHASSIS 0x4D #define W83795_REG_BEEP(index) (0x50 + (index)) +#define W83795_REG_OVT_CFG 0x58 +#define OVT_CFG_SEL (1 << 7) + #define W83795_REG_FCMS1 0x201 #define W83795_REG_FCMS2 0x208 @@ -378,6 +381,7 @@ struct w83795_data { u8 setup_pwm[3]; /* Register value */ u8 alarms[6]; /* Register value */ + u8 enable_beep; u8 beeps[6]; /* Register value */ char valid; @@ -508,8 +512,11 @@ static void w83795_update_limits(struct i2c_client *client) } /* Read beep settings */ - for (i = 0; i < ARRAY_SIZE(data->beeps); i++) - data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i)); + if (data->enable_beep) { + for (i = 0; i < ARRAY_SIZE(data->beeps); i++) + data->beeps[i] = + w83795_read(client, W83795_REG_BEEP(i)); + } data->valid_limits = 1; } @@ -1588,7 +1595,7 @@ store_sf_setup(struct device *dev, struct device_attribute *attr, #define NOT_USED -1 -/* Don't change the attribute order, _max and _min are accessed by index +/* Don't change the attribute order, _max, _min and _beep are accessed by index * somewhere else in the code */ #define SENSOR_ATTR_IN(index) { \ SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ @@ -1603,6 +1610,8 @@ store_sf_setup(struct device *dev, struct device_attribute *attr, show_alarm_beep, store_beep, BEEP_ENABLE, \ index + ((index > 14) ? 1 : 0)) } +/* Don't change the attribute order, _beep is accessed by index + * somewhere else in the code */ #define SENSOR_ATTR_FAN(index) { \ SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ NULL, FAN_INPUT, index - 1), \ @@ -1631,6 +1640,8 @@ store_sf_setup(struct device *dev, struct device_attribute *attr, SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \ show_fanin, store_fanin, FANIN_TARGET, index - 1) } +/* Don't change the attribute order, _beep is accessed by index + * somewhere else in the code */ #define SENSOR_ATTR_DTS(index) { \ SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \ show_dts_mode, NULL, NOT_USED, index - 7), \ @@ -1649,6 +1660,8 @@ store_sf_setup(struct device *dev, struct device_attribute *attr, SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) } +/* Don't change the attribute order, _beep is accessed by index + * somewhere else in the code */ #define SENSOR_ATTR_TEMP(index) { \ SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \ show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ @@ -1802,10 +1815,6 @@ static const struct sensor_device_attribute_2 w83795_tss[6] = { static const struct sensor_device_attribute_2 sda_single_files[] = { SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, store_chassis_clear, ALARM_STATUS, 46), - SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep, - store_beep, BEEP_ENABLE, 46), - SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep, - store_beep, BEEP_ENABLE, 47), #ifdef CONFIG_SENSORS_W83795_FANCTRL SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin, store_fanin, FANIN_TOL, NOT_USED), @@ -1818,6 +1827,13 @@ static const struct sensor_device_attribute_2 sda_single_files[] = { #endif }; +static const struct sensor_device_attribute_2 sda_beep_files[] = { + SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep, + store_beep, BEEP_ENABLE, 46), + SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep, + store_beep, BEEP_ENABLE, 47), +}; + /* * Driver interface */ @@ -1947,6 +1963,8 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, if (!(data->has_in & (1 << i))) continue; for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) { + if (j == 4 && !data->enable_beep) + continue; err = fn(dev, &w83795_in[i][j].dev_attr); if (err) return err; @@ -1957,6 +1975,8 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, if (!(data->has_fan & (1 << i))) continue; for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) { + if (j == 3 && !data->enable_beep) + continue; err = fn(dev, &w83795_fan[i][j].dev_attr); if (err) return err; @@ -1978,6 +1998,14 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, return err; } + if (data->enable_beep) { + for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) { + err = fn(dev, &sda_beep_files[i].dev_attr); + if (err) + return err; + } + } + #ifdef CONFIG_SENSORS_W83795_FANCTRL for (i = 0; i < data->has_pwm; i++) { for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) { @@ -1996,6 +2024,8 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, #else for (j = 0; j < 8; j++) { #endif + if (j == 7 && !data->enable_beep) + continue; err = fn(dev, &w83795_temp[i][j].dev_attr); if (err) return err; @@ -2007,6 +2037,8 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, if (!(data->has_dts & (1 << i))) continue; for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) { + if (j == 7 && !data->enable_beep) + continue; err = fn(dev, &w83795_dts[i][j].dev_attr); if (err) return err; @@ -2146,6 +2178,18 @@ static int w83795_probe(struct i2c_client *client, else data->has_pwm = 2; + /* Check if BEEP pin is available */ + if (data->chip_type == w83795g) { + /* The W83795G has a dedicated BEEP pin */ + data->enable_beep = 1; + } else { + /* The W83795ADG has a shared pin for OVT# and BEEP, so you + * can't have both */ + tmp = w83795_read(client, W83795_REG_OVT_CFG); + if ((tmp & OVT_CFG_SEL) == 0) + data->enable_beep = 1; + } + err = w83795_handle_files(dev, device_create_file); if (err) goto exit_remove; |