diff options
Diffstat (limited to 'drivers/hwmon/ab8500.c')
| -rw-r--r-- | drivers/hwmon/ab8500.c | 65 |
1 files changed, 41 insertions, 24 deletions
diff --git a/drivers/hwmon/ab8500.c b/drivers/hwmon/ab8500.c index 207f77f85a40..53f3379d799d 100644 --- a/drivers/hwmon/ab8500.c +++ b/drivers/hwmon/ab8500.c @@ -17,20 +17,24 @@ #include <linux/hwmon-sysfs.h> #include <linux/mfd/abx500.h> #include <linux/mfd/abx500/ab8500-bm.h> -#include <linux/mfd/abx500/ab8500-gpadc.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/power/ab8500.h> #include <linux/reboot.h> #include <linux/slab.h> #include <linux/sysfs.h> +#include <linux/iio/consumer.h> #include "abx500.h" #define DEFAULT_POWER_OFF_DELAY (HZ * 10) #define THERMAL_VCC 1800 #define PULL_UP_RESISTOR 47000 -/* Number of monitored sensors should not greater than NUM_SENSORS */ -#define NUM_MONITORED_SENSORS 4 + +#define AB8500_SENSOR_AUX1 0 +#define AB8500_SENSOR_AUX2 1 +#define AB8500_SENSOR_BTEMP_BALL 2 +#define AB8500_SENSOR_BAT_CTRL 3 +#define NUM_MONITORED_SENSORS 4 struct ab8500_gpadc_cfg { const struct abx500_res_to_temp *temp_tbl; @@ -40,7 +44,8 @@ struct ab8500_gpadc_cfg { }; struct ab8500_temp { - struct ab8500_gpadc *gpadc; + struct iio_channel *aux1; + struct iio_channel *aux2; struct ab8500_btemp *btemp; struct delayed_work power_off_work; struct ab8500_gpadc_cfg cfg; @@ -82,15 +87,21 @@ static int ab8500_read_sensor(struct abx500_temp *data, u8 sensor, int *temp) int voltage, ret; struct ab8500_temp *ab8500_data = data->plat_data; - if (sensor == BAT_CTRL) { - *temp = ab8500_btemp_get_batctrl_temp(ab8500_data->btemp); - } else if (sensor == BTEMP_BALL) { + if (sensor == AB8500_SENSOR_BTEMP_BALL) { *temp = ab8500_btemp_get_temp(ab8500_data->btemp); - } else { - voltage = ab8500_gpadc_convert(ab8500_data->gpadc, sensor); - if (voltage < 0) - return voltage; - + } else if (sensor == AB8500_SENSOR_BAT_CTRL) { + *temp = ab8500_btemp_get_batctrl_temp(ab8500_data->btemp); + } else if (sensor == AB8500_SENSOR_AUX1) { + ret = iio_read_channel_processed(ab8500_data->aux1, &voltage); + if (ret < 0) + return ret; + ret = ab8500_voltage_to_temp(&ab8500_data->cfg, voltage, temp); + if (ret < 0) + return ret; + } else if (sensor == AB8500_SENSOR_AUX2) { + ret = iio_read_channel_processed(ab8500_data->aux2, &voltage); + if (ret < 0) + return ret; ret = ab8500_voltage_to_temp(&ab8500_data->cfg, voltage, temp); if (ret < 0) return ret; @@ -164,10 +175,6 @@ int abx500_hwmon_init(struct abx500_temp *data) if (!ab8500_data) return -ENOMEM; - ab8500_data->gpadc = ab8500_gpadc_get("ab8500-gpadc.0"); - if (IS_ERR(ab8500_data->gpadc)) - return PTR_ERR(ab8500_data->gpadc); - ab8500_data->btemp = ab8500_btemp_get(); if (IS_ERR(ab8500_data->btemp)) return PTR_ERR(ab8500_data->btemp); @@ -181,15 +188,25 @@ int abx500_hwmon_init(struct abx500_temp *data) ab8500_data->cfg.tbl_sz = ab8500_temp_tbl_a_size; data->plat_data = ab8500_data; + ab8500_data->aux1 = devm_iio_channel_get(&data->pdev->dev, "aux1"); + if (IS_ERR(ab8500_data->aux1)) { + if (PTR_ERR(ab8500_data->aux1) == -ENODEV) + return -EPROBE_DEFER; + dev_err(&data->pdev->dev, "failed to get AUX1 ADC channel\n"); + return PTR_ERR(ab8500_data->aux1); + } + ab8500_data->aux2 = devm_iio_channel_get(&data->pdev->dev, "aux2"); + if (IS_ERR(ab8500_data->aux2)) { + if (PTR_ERR(ab8500_data->aux2) == -ENODEV) + return -EPROBE_DEFER; + dev_err(&data->pdev->dev, "failed to get AUX2 ADC channel\n"); + return PTR_ERR(ab8500_data->aux2); + } - /* - * ADC_AUX1 and ADC_AUX2, connected to external NTC - * BTEMP_BALL and BAT_CTRL, fixed usage - */ - data->gpadc_addr[0] = ADC_AUX1; - data->gpadc_addr[1] = ADC_AUX2; - data->gpadc_addr[2] = BTEMP_BALL; - data->gpadc_addr[3] = BAT_CTRL; + data->gpadc_addr[0] = AB8500_SENSOR_AUX1; + data->gpadc_addr[1] = AB8500_SENSOR_AUX2; + data->gpadc_addr[2] = AB8500_SENSOR_BTEMP_BALL; + data->gpadc_addr[3] = AB8500_SENSOR_BAT_CTRL; data->monitored_sensors = NUM_MONITORED_SENSORS; data->ops.read_sensor = ab8500_read_sensor; |