diff options
| -rw-r--r-- | Documentation/hwmon/ab8500.rst | 26 | ||||
| -rw-r--r-- | Documentation/hwmon/abx500.rst | 32 | ||||
| -rw-r--r-- | Documentation/hwmon/index.rst | 2 | ||||
| -rw-r--r-- | drivers/hwmon/Kconfig | 13 | ||||
| -rw-r--r-- | drivers/hwmon/Makefile | 1 | ||||
| -rw-r--r-- | drivers/hwmon/ab8500.c | 224 | ||||
| -rw-r--r-- | drivers/hwmon/abx500.c | 487 | ||||
| -rw-r--r-- | drivers/hwmon/abx500.h | 69 |
8 files changed, 0 insertions, 854 deletions
diff --git a/Documentation/hwmon/ab8500.rst b/Documentation/hwmon/ab8500.rst deleted file mode 100644 index 33f93a9cec04..000000000000 --- a/Documentation/hwmon/ab8500.rst +++ /dev/null @@ -1,26 +0,0 @@ -Kernel driver ab8500 -==================== - -Supported chips: - - * ST-Ericsson AB8500 - - Prefix: 'ab8500' - - Addresses scanned: - - - Datasheet: http://www.stericsson.com/developers/documentation.jsp - -Authors: - - Martin Persson <martin.persson@stericsson.com> - - Hongbo Zhang <hongbo.zhang@linaro.org> - -Description ------------ - -See also Documentation/hwmon/abx500.rst. This is the ST-Ericsson AB8500 specific -driver. - -Currently only the AB8500 internal sensor and one external sensor for battery -temperature are monitored. Other GPADC channels can also be monitored if needed -in future. diff --git a/Documentation/hwmon/abx500.rst b/Documentation/hwmon/abx500.rst deleted file mode 100644 index 3d88b2ce0f00..000000000000 --- a/Documentation/hwmon/abx500.rst +++ /dev/null @@ -1,32 +0,0 @@ -Kernel driver abx500 -==================== - -Supported chips: - - * ST-Ericsson ABx500 series - - Prefix: 'abx500' - - Addresses scanned: - - - Datasheet: http://www.stericsson.com/developers/documentation.jsp - -Authors: - Martin Persson <martin.persson@stericsson.com> - Hongbo Zhang <hongbo.zhang@linaro.org> - -Description ------------ - -Every ST-Ericsson Ux500 SOC consists of both ABx500 and DBx500 physically, -this is kernel hwmon driver for ABx500. - -There are some GPADCs inside ABx500 which are designed for connecting to -thermal sensors, and there is also a thermal sensor inside ABx500 too, which -raises interrupt when critical temperature reached. - -This abx500 is a common layer which can monitor all of the sensors, every -specific abx500 chip has its special configurations in its own file, e.g. some -sensors can be configured invisible if they are not available on that chip, and -the corresponding gpadc_addr should be set to 0, thus this sensor won't be -polled. diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index fcb870ce6286..ebe53bb771dd 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -18,10 +18,8 @@ Hardware Monitoring Kernel Drivers .. toctree:: :maxdepth: 1 - ab8500 abituguru abituguru3 - abx500 acpi_power_meter ad7314 adc128d818 diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 1ecf697d8d99..c6c4f404399b 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -38,19 +38,6 @@ config HWMON_DEBUG_CHIP comment "Native drivers" -config SENSORS_AB8500 - tristate "AB8500 thermal monitoring" - depends on AB8500_GPADC && AB8500_BM && (IIO = y) - default n - help - If you say yes here you get support for the thermal sensor part - of the AB8500 chip. The driver includes thermal management for - AB8500 die and two GPADC channels. The GPADC channel are preferably - used to access sensors outside the AB8500 chip. - - This driver can also be built as a module. If so, the module - will be called abx500-temp. - config SENSORS_ABITUGURU tristate "Abit uGuru (rev 1 & 2)" depends on X86 && DMI diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 09a86c5e1d29..990891a8c89d 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -21,7 +21,6 @@ obj-$(CONFIG_SENSORS_W83795) += w83795.o obj-$(CONFIG_SENSORS_W83781D) += w83781d.o obj-$(CONFIG_SENSORS_W83791D) += w83791d.o -obj-$(CONFIG_SENSORS_AB8500) += abx500.o ab8500.o obj-$(CONFIG_SENSORS_ABITUGURU) += abituguru.o obj-$(CONFIG_SENSORS_ABITUGURU3)+= abituguru3.o obj-$(CONFIG_SENSORS_AD7314) += ad7314.o diff --git a/drivers/hwmon/ab8500.c b/drivers/hwmon/ab8500.c deleted file mode 100644 index 53f3379d799d..000000000000 --- a/drivers/hwmon/ab8500.c +++ /dev/null @@ -1,224 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) ST-Ericsson 2010 - 2013 - * Author: Martin Persson <martin.persson@stericsson.com> - * Hongbo Zhang <hongbo.zhang@linaro.org> - * - * When the AB8500 thermal warning temperature is reached (threshold cannot - * be changed by SW), an interrupt is set, and if no further action is taken - * within a certain time frame, kernel_power_off will be called. - * - * When AB8500 thermal shutdown temperature is reached a hardware shutdown of - * the AB8500 will occur. - */ - -#include <linux/err.h> -#include <linux/hwmon.h> -#include <linux/hwmon-sysfs.h> -#include <linux/mfd/abx500.h> -#include <linux/mfd/abx500/ab8500-bm.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 - -#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; - int tbl_sz; - int vcc; - int r_up; -}; - -struct ab8500_temp { - struct iio_channel *aux1; - struct iio_channel *aux2; - struct ab8500_btemp *btemp; - struct delayed_work power_off_work; - struct ab8500_gpadc_cfg cfg; - struct abx500_temp *abx500_data; -}; - -/* - * The hardware connection is like this: - * VCC----[ R_up ]-----[ NTC ]----GND - * where R_up is pull-up resistance, and GPADC measures voltage on NTC. - * and res_to_temp table is strictly sorted by falling resistance values. - */ -static int ab8500_voltage_to_temp(struct ab8500_gpadc_cfg *cfg, - int v_ntc, int *temp) -{ - int r_ntc, i = 0, tbl_sz = cfg->tbl_sz; - const struct abx500_res_to_temp *tbl = cfg->temp_tbl; - - if (cfg->vcc < 0 || v_ntc >= cfg->vcc) - return -EINVAL; - - r_ntc = v_ntc * cfg->r_up / (cfg->vcc - v_ntc); - if (r_ntc > tbl[0].resist || r_ntc < tbl[tbl_sz - 1].resist) - return -EINVAL; - - while (!(r_ntc <= tbl[i].resist && r_ntc > tbl[i + 1].resist) && - i < tbl_sz - 2) - i++; - - /* return milli-Celsius */ - *temp = tbl[i].temp * 1000 + ((tbl[i + 1].temp - tbl[i].temp) * 1000 * - (r_ntc - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist); - - return 0; -} - -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 == AB8500_SENSOR_BTEMP_BALL) { - *temp = ab8500_btemp_get_temp(ab8500_data->btemp); - } 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; - } - - return 0; -} - -static void ab8500_thermal_power_off(struct work_struct *work) -{ - struct ab8500_temp *ab8500_data = container_of(work, - struct ab8500_temp, power_off_work.work); - struct abx500_temp *abx500_data = ab8500_data->abx500_data; - - dev_warn(&abx500_data->pdev->dev, "Power off due to critical temp\n"); - - kernel_power_off(); -} - -static ssize_t ab8500_show_name(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - return sprintf(buf, "ab8500\n"); -} - -static ssize_t ab8500_show_label(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - char *label; - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - int index = attr->index; - - switch (index) { - case 1: - label = "ext_adc1"; - break; - case 2: - label = "ext_adc2"; - break; - case 3: - label = "bat_temp"; - break; - case 4: - label = "bat_ctrl"; - break; - default: - return -EINVAL; - } - - return sprintf(buf, "%s\n", label); -} - -static int ab8500_temp_irq_handler(int irq, struct abx500_temp *data) -{ - struct ab8500_temp *ab8500_data = data->plat_data; - - dev_warn(&data->pdev->dev, "Power off in %d s\n", - DEFAULT_POWER_OFF_DELAY / HZ); - - schedule_delayed_work(&ab8500_data->power_off_work, - DEFAULT_POWER_OFF_DELAY); - return 0; -} - -int abx500_hwmon_init(struct abx500_temp *data) -{ - struct ab8500_temp *ab8500_data; - - ab8500_data = devm_kzalloc(&data->pdev->dev, sizeof(*ab8500_data), - GFP_KERNEL); - if (!ab8500_data) - return -ENOMEM; - - ab8500_data->btemp = ab8500_btemp_get(); - if (IS_ERR(ab8500_data->btemp)) - return PTR_ERR(ab8500_data->btemp); - - INIT_DELAYED_WORK(&ab8500_data->power_off_work, - ab8500_thermal_power_off); - - ab8500_data->cfg.vcc = THERMAL_VCC; - ab8500_data->cfg.r_up = PULL_UP_RESISTOR; - ab8500_data->cfg.temp_tbl = ab8500_temp_tbl_a_thermistor; - 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); - } - - 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; - data->ops.irq_handler = ab8500_temp_irq_handler; - data->ops.show_name = ab8500_show_name; - data->ops.show_label = ab8500_show_label; - data->ops.is_visible = NULL; - - return 0; -} -EXPORT_SYMBOL(abx500_hwmon_init); - -MODULE_AUTHOR("Hongbo Zhang <hongbo.zhang@linaro.org>"); -MODULE_DESCRIPTION("AB8500 temperature driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/abx500.c b/drivers/hwmon/abx500.c deleted file mode 100644 index 4b9648819836..000000000000 --- a/drivers/hwmon/abx500.c +++ /dev/null @@ -1,487 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) ST-Ericsson 2010 - 2013 - * Author: Martin Persson <martin.persson@stericsson.com> - * Hongbo Zhang <hongbo.zhang@linaro.org> - * - * ABX500 does not provide auto ADC, so to monitor the required temperatures, - * a periodic work is used. It is more important to not wake up the CPU than - * to perform this job, hence the use of a deferred delay. - * - * A deferred delay for thermal monitor is considered safe because: - * If the chip gets too hot during a sleep state it's most likely due to - * external factors, such as the surrounding temperature. I.e. no SW decisions - * will make any difference. - */ - -#include <linux/err.h> -#include <linux/hwmon.h> -#include <linux/hwmon-sysfs.h> -#include <linux/interrupt.h> -#include <linux/jiffies.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/pm.h> -#include <linux/slab.h> -#include <linux/sysfs.h> -#include <linux/workqueue.h> -#include "abx500.h" - -#define DEFAULT_MONITOR_DELAY HZ -#define DEFAULT_MAX_TEMP 130 - -static inline void schedule_monitor(struct abx500_temp *data) -{ - data->work_active = true; - schedule_delayed_work(&data->work, DEFAULT_MONITOR_DELAY); -} - -static void threshold_updated(struct abx500_temp *data) -{ - int i; - for (i = 0; i < data->monitored_sensors; i++) - if (data->max[i] != 0 || data->min[i] != 0) { - schedule_monitor(data); - return; - } - - dev_dbg(&data->pdev->dev, "No active thresholds.\n"); - cancel_delayed_work_sync(&data->work); - data->work_active = false; -} - -static void gpadc_monitor(struct work_struct *work) -{ - int temp, i, ret; - char alarm_node[30]; - bool updated_min_alarm, updated_max_alarm; - struct abx500_temp *data; - - data = container_of(work, struct abx500_temp, work.work); - mutex_lock(&data->lock); - - for (i = 0; i < data->monitored_sensors; i++) { - /* Thresholds are considered inactive if set to 0 */ - if (data->max[i] == 0 && data->min[i] == 0) - continue; - - if (data->max[i] < data->min[i]) - continue; - - ret = data->ops.read_sensor(data, data->gpadc_addr[i], &temp); - if (ret < 0) { - dev_err(&data->pdev->dev, "GPADC read failed\n"); - continue; - } - - updated_min_alarm = false; - updated_max_alarm = false; - - if (data->min[i] != 0) { - if (temp < data->min[i]) { - if (data->min_alarm[i] == false) { - data->min_alarm[i] = true; - updated_min_alarm = true; - } - } else { - if (data->min_alarm[i] == true) { - data->min_alarm[i] = false; - updated_min_alarm = true; - } - } - } - if (data->max[i] != 0) { - if (temp > data->max[i]) { - if (data->max_alarm[i] == false) { - data->max_alarm[i] = true; - updated_max_alarm = true; - } - } else if (temp < data->max[i] - data->max_hyst[i]) { - if (data->max_alarm[i] == true) { - data->max_alarm[i] = false; - updated_max_alarm = true; - } - } - } - - if (updated_min_alarm) { - ret = sprintf(alarm_node, "temp%d_min_alarm", i + 1); - sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node); - } - if (updated_max_alarm) { - ret = sprintf(alarm_node, "temp%d_max_alarm", i + 1); - sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node); - } - } - - schedule_monitor(data); - mutex_unlock(&data->lock); -} - -/* HWMON sysfs interfaces */ -static ssize_t name_show(struct device *dev, struct device_attribute *devattr, - char *buf) -{ - struct abx500_temp *data = dev_get_drvdata(dev); - /* Show chip name */ - return data->ops.show_name(dev, devattr, buf); -} - -static ssize_t label_show(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - struct abx500_temp *data = dev_get_drvdata(dev); - /* Show each sensor label */ - return data->ops.show_label(dev, devattr, buf); -} - -static ssize_t input_show(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - int ret, temp; - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - u8 gpadc_addr = data->gpadc_addr[attr->index]; - - ret = data->ops.read_sensor(data, gpadc_addr, &temp); - if (ret < 0) - return ret; - - return sprintf(buf, "%d\n", temp); -} - -/* Set functions (RW nodes) */ -static ssize_t min_store(struct device *dev, struct device_attribute *devattr, - const char *buf, size_t count) -{ - unsigned long val; - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - int res = kstrtol(buf, 10, &val); - if (res < 0) - return res; - - val = clamp_val(val, 0, DEFAULT_MAX_TEMP); - - mutex_lock(&data->lock); - data->min[attr->index] = val; - threshold_updated(data); - mutex_unlock(&data->lock); - - return count; -} - -static ssize_t max_store(struct device *dev, struct device_attribute *devattr, - const char *buf, size_t count) -{ - unsigned long val; - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - int res = kstrtol(buf, 10, &val); - if (res < 0) - return res; - - val = clamp_val(val, 0, DEFAULT_MAX_TEMP); - - mutex_lock(&data->lock); - data->max[attr->index] = val; - threshold_updated(data); - mutex_unlock(&data->lock); - - return count; -} - -static ssize_t max_hyst_store(struct device *dev, - struct device_attribute *devattr, - const char *buf, size_t count) -{ - unsigned long val; - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - int res = kstrtoul(buf, 10, &val); - if (res < 0) - return res; - - val = clamp_val(val, 0, DEFAULT_MAX_TEMP); - - mutex_lock(&data->lock); - data->max_hyst[attr->index] = val; - threshold_updated(data); - mutex_unlock(&data->lock); - - return count; -} - -/* Show functions (RO nodes) */ -static ssize_t min_show(struct device *dev, struct device_attribute *devattr, - char *buf) -{ - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - - return sprintf(buf, "%lu\n", data->min[attr->index]); -} - -static ssize_t max_show(struct device *dev, struct device_attribute *devattr, - char *buf) -{ - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - - return sprintf(buf, "%lu\n", data->max[attr->index]); -} - -static ssize_t max_hyst_show(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - - return sprintf(buf, "%lu\n", data->max_hyst[attr->index]); -} - -static ssize_t min_alarm_show(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - - return sprintf(buf, "%d\n", data->min_alarm[attr->index]); -} - -static ssize_t max_alarm_show(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - struct abx500_temp *data = dev_get_drvdata(dev); - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - - return sprintf(buf, "%d\n", data->max_alarm[attr->index]); -} - -static umode_t abx500_attrs_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - struct device *dev = kobj_to_dev(kobj); - struct abx500_temp *data = dev_get_drvdata(dev); - - if (data->ops.is_visible) - return data->ops.is_visible(attr, n); - - return attr->mode; -} - -/* Chip name, required by hwmon */ -static SENSOR_DEVICE_ATTR_RO(name, name, 0); - -/* GPADC - SENSOR1 */ -static SENSOR_DEVICE_ATTR_RO(temp1_label, label, 0); -static SENSOR_DEVICE_ATTR_RO(temp1_input, input, 0); -static SENSOR_DEVICE_ATTR_RW(temp1_min, min, 0); -static SENSOR_DEVICE_ATTR_RW(temp1_max, max, 0); -static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, max_hyst, 0); -static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, min_alarm, 0); -static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, max_alarm, 0); - -/* GPADC - SENSOR2 */ -static SENSOR_DEVICE_ATTR_RO(temp2_label, label, 1); -static SENSOR_DEVICE_ATTR_RO(temp2_input, input, 1); -static SENSOR_DEVICE_ATTR_RW(temp2_min, min, 1); -static SENSOR_DEVICE_ATTR_RW(temp2_max, max, 1); -static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, max_hyst, 1); -static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, min_alarm, 1); -static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, max_alarm, 1); - -/* GPADC - SENSOR3 */ -static SENSOR_DEVICE_ATTR_RO(temp3_label, label, 2); -static SENSOR_DEVICE_ATTR_RO(temp3_input, input, 2); -static SENSOR_DEVICE_ATTR_RW(temp3_min, min, 2); -static SENSOR_DEVICE_ATTR_RW(temp3_max, max, 2); -static SENSOR_DEVICE_ATTR_RW(temp3_max_hyst, max_hyst, 2); -static SENSOR_DEVICE_ATTR_RO(temp3_min_alarm, min_alarm, 2); -static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, max_alarm, 2); - -/* GPADC - SENSOR4 */ -static SENSOR_DEVICE_ATTR_RO(temp4_label, label, 3); -static SENSOR_DEVICE_ATTR_RO(temp4_input, input, 3); -static SENSOR_DEVICE_ATTR_RW(temp4_min, min, 3); -static SENSOR_DEVICE_ATTR_RW(temp4_max, max, 3); -static SENSOR_DEVICE_ATTR_RW(temp4_max_hyst, max_hyst, 3); -static SENSOR_DEVICE_ATTR_RO(temp4_min_alarm, min_alarm, 3); -static SENSOR_DEVICE_ATTR_RO(temp4_max_alarm, max_alarm, 3); - -static struct attribute *abx500_temp_attributes[] = { - &sensor_dev_attr_name.dev_attr.attr, - - &sensor_dev_attr_temp1_label.dev_attr.attr, - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_min.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, - - &sensor_dev_attr_temp2_label.dev_attr.attr, - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp2_min.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, - - &sensor_dev_attr_temp3_label.dev_attr.attr, - &sensor_dev_attr_temp3_input.dev_attr.attr, - &sensor_dev_attr_temp3_min.dev_attr.attr, - &sensor_dev_attr_temp3_max.dev_attr.attr, - &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp3_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, - - &sensor_dev_attr_temp4_label.dev_attr.attr, - &sensor_dev_attr_temp4_input.dev_attr.attr, - &sensor_dev_attr_temp4_min.dev_attr.attr, - &sensor_dev_attr_temp4_max.dev_attr.attr, - &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp4_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, - NULL -}; - -static const struct attribute_group abx500_temp_group = { - .attrs = abx500_temp_attributes, - .is_visible = abx500_attrs_visible, -}; - -static irqreturn_t abx500_temp_irq_handler(int irq, void *irq_data) -{ - struct platform_device *pdev = irq_data; - struct abx500_temp *data = platform_get_drvdata(pdev); - - data->ops.irq_handler(irq, data); - return IRQ_HANDLED; -} - -static int setup_irqs(struct platform_device *pdev) -{ - int ret; - int irq = platform_get_irq_byname(pdev, "ABX500_TEMP_WARM"); - - if (irq < 0) { - dev_err(&pdev->dev, "Get irq by name failed\n"); - return irq; - } - - ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, - abx500_temp_irq_handler, 0, "abx500-temp", pdev); - if (ret < 0) - dev_err(&pdev->dev, "Request threaded irq failed (%d)\n", ret); - - return ret; -} - -static int abx500_temp_probe(struct platform_device *pdev) -{ - struct abx500_temp *data; - int err; - - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - data->pdev = pdev; - mutex_init(&data->lock); - - /* Chip specific initialization */ - err = abx500_hwmon_init(data); - if (err < 0 || !data->ops.read_sensor || !data->ops.show_name || - !data->ops.show_label) - return err; - - INIT_DEFERRABLE_WORK(&data->work, gpadc_monitor); - - platform_set_drvdata(pdev, data); - - err = sysfs_create_group(&pdev->dev.kobj, &abx500_temp_group); - if (err < 0) { - dev_err(&pdev->dev, "Create sysfs group failed (%d)\n", err); - return err; - } - - data->hwmon_dev = hwmon_device_register(&pdev->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - dev_err(&pdev->dev, "Class registration failed (%d)\n", err); - goto exit_sysfs_group; - } - - if (data->ops.irq_handler) { - err = setup_irqs(pdev); - if (err < 0) - goto exit_hwmon_reg; - } - return 0; - -exit_hwmon_reg: - hwmon_device_unregister(data->hwmon_dev); -exit_sysfs_group: - sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group); - return err; -} - -static int abx500_temp_remove(struct platform_device *pdev) -{ - struct abx500_temp *data = platform_get_drvdata(pdev); - - cancel_delayed_work_sync(&data->work); - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group); - - return 0; -} - -static int abx500_temp_suspend(struct platform_device *pdev, - pm_message_t state) -{ - struct abx500_temp *data = platform_get_drvdata(pdev); - - if (data->work_active) - cancel_delayed_work_sync(&data->work); - - return 0; -} - -static int abx500_temp_resume(struct platform_device *pdev) -{ - struct abx500_temp *data = platform_get_drvdata(pdev); - - if (data->work_active) - schedule_monitor(data); - - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id abx500_temp_match[] = { - { .compatible = "stericsson,abx500-temp" }, - {}, -}; -MODULE_DEVICE_TABLE(of, abx500_temp_match); -#endif - -static struct platform_driver abx500_temp_driver = { - .driver = { - .name = "abx500-temp", - .of_match_table = of_match_ptr(abx500_temp_match), - }, - .suspend = abx500_temp_suspend, - .resume = abx500_temp_resume, - .probe = abx500_temp_probe, - .remove = abx500_temp_remove, -}; - -module_platform_driver(abx500_temp_driver); - -MODULE_AUTHOR("Martin Persson <martin.persson@stericsson.com>"); -MODULE_DESCRIPTION("ABX500 temperature driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/abx500.h b/drivers/hwmon/abx500.h deleted file mode 100644 index 4517594260f2..000000000000 --- a/drivers/hwmon/abx500.h +++ /dev/null @@ -1,69 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) ST-Ericsson 2010 - 2013 - * Author: Martin Persson <martin.persson@stericsson.com> - * Hongbo Zhang <hongbo.zhang@linaro.com> - */ - -#ifndef _ABX500_H -#define _ABX500_H - -#define NUM_SENSORS 5 - -struct abx500_temp; - -/* - * struct abx500_temp_ops - abx500 chip specific ops - * @read_sensor: reads gpadc output - * @irq_handler: irq handler - * @show_name: hwmon device name - * @show_label: hwmon attribute label - * @is_visible: is attribute visible - */ -struct abx500_temp_ops { - int (*read_sensor)(struct abx500_temp *, u8, int *); - int (*irq_handler)(int, struct abx500_temp *); - ssize_t (*show_name)(struct device *, - struct device_attribute *, char *); - ssize_t (*show_label) (struct device *, - struct device_attribute *, char *); - int (*is_visible)(struct attribute *, int); -}; - -/* - * struct abx500_temp - representation of temp mon device - * @pdev: platform device - * @hwmon_dev: hwmon device - * @ops: abx500 chip specific ops - * @gpadc_addr: gpadc channel address - * @min: sensor temperature min value - * @max: sensor temperature max value - * @max_hyst: sensor temperature hysteresis value for max limit - * @min_alarm: sensor temperature min alarm - * @max_alarm: sensor temperature max alarm - * @work: delayed work scheduled to monitor temperature periodically - * @work_active: True if work is active - * @lock: mutex - * @monitored_sensors: number of monitored sensors - * @plat_data: private usage, usually points to platform specific data - */ -struct abx500_temp { - struct platform_device *pdev; - struct device *hwmon_dev; - struct abx500_temp_ops ops; - u8 gpadc_addr[NUM_SENSORS]; - unsigned long min[NUM_SENSORS]; - unsigned long max[NUM_SENSORS]; - unsigned long max_hyst[NUM_SENSORS]; - bool min_alarm[NUM_SENSORS]; - bool max_alarm[NUM_SENSORS]; - struct delayed_work work; - bool work_active; - struct mutex lock; - int monitored_sensors; - void *plat_data; -}; - -int abx500_hwmon_init(struct abx500_temp *data); - -#endif /* _ABX500_H */ |