| Message ID | 20170110234745.29691-5-linus.walleij@linaro.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
On 01/10/2017 03:47 PM, Linus Walleij wrote: > This switches the AB8500 hardware monitor driver to using > the standard IIO ADC channel lookup and conversion routines. > > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- (cautious) Acked-by: Guenter Roeck <linux@roeck-us.net> Looks ok to me, but someone with better understanding of iio should probably have a closer look. Guenter > drivers/hwmon/ab8500.c | 65 +++++++++++++++++++++++++++++++------------------- > 1 file changed, 41 insertions(+), 24 deletions(-) > > diff --git a/drivers/hwmon/ab8500.c b/drivers/hwmon/ab8500.c > index 8b6a4f4c8774..6f4a5534bdcb 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; > -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 12/01/17 01:40, Guenter Roeck wrote: > On 01/10/2017 03:47 PM, Linus Walleij wrote: >> This switches the AB8500 hardware monitor driver to using >> the standard IIO ADC channel lookup and conversion routines. >> >> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> >> --- > > (cautious) > Acked-by: Guenter Roeck <linux@roeck-us.net> > > Looks ok to me, but someone with better understanding of iio should probably > have a closer look. Looks good to me too. Acked-by: Jonathan Cameron <jic23@kernel.org> > > Guenter > >> drivers/hwmon/ab8500.c | 65 +++++++++++++++++++++++++++++++------------------- >> 1 file changed, 41 insertions(+), 24 deletions(-) >> >> diff --git a/drivers/hwmon/ab8500.c b/drivers/hwmon/ab8500.c >> index 8b6a4f4c8774..6f4a5534bdcb 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; >> > > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/hwmon/ab8500.c b/drivers/hwmon/ab8500.c index 8b6a4f4c8774..6f4a5534bdcb 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;
This switches the AB8500 hardware monitor driver to using the standard IIO ADC channel lookup and conversion routines. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- drivers/hwmon/ab8500.c | 65 +++++++++++++++++++++++++++++++------------------- 1 file changed, 41 insertions(+), 24 deletions(-)