mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
Merge remote-tracking branch 'lee/ib-mfd-hwmon-4.14' into hwmon-next
This commit is contained in:
Guenter Roeck
commit
4e6fe29fb8
@ -20,13 +20,19 @@
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <linux/property.h>
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#include <linux/mfd/da9052/da9052.h>
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#include <linux/mfd/da9052/reg.h>
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#include <linux/regulator/consumer.h>
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struct da9052_hwmon {
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struct da9052 *da9052;
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struct mutex hwmon_lock;
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struct da9052 *da9052;
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struct mutex hwmon_lock;
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bool tsi_as_adc;
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int tsiref_mv;
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struct regulator *tsiref;
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struct completion tsidone;
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};
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static const char * const input_names[] = {
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@ -37,6 +43,10 @@ static const char * const input_names[] = {
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[DA9052_ADC_IN4] = "ADC IN4",
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[DA9052_ADC_IN5] = "ADC IN5",
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[DA9052_ADC_IN6] = "ADC IN6",
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[DA9052_ADC_TSI_XP] = "ADC TS X+",
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[DA9052_ADC_TSI_YP] = "ADC TS Y+",
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[DA9052_ADC_TSI_XN] = "ADC TS X-",
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[DA9052_ADC_TSI_YN] = "ADC TS Y-",
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[DA9052_ADC_TJUNC] = "BATTERY JUNCTION TEMP",
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[DA9052_ADC_VBBAT] = "BACK-UP BATTERY VOLTAGE",
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};
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@ -59,6 +69,11 @@ static inline int vbbat_reg_to_mv(int value)
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return DIV_ROUND_CLOSEST(value * 5000, 1023);
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}
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static inline int input_tsireg_to_mv(struct da9052_hwmon *hwmon, int value)
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{
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return DIV_ROUND_CLOSEST(value * hwmon->tsiref_mv, 1023);
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}
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static inline int da9052_enable_vddout_channel(struct da9052 *da9052)
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{
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return da9052_reg_update(da9052, DA9052_ADC_CONT_REG,
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@ -154,6 +169,97 @@ static ssize_t da9052_read_misc_channel(struct device *dev,
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return sprintf(buf, "%d\n", input_reg_to_mv(ret));
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}
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static int da9052_request_tsi_read(struct da9052_hwmon *hwmon, int channel)
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{
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u8 val = DA9052_TSICONTB_TSIMAN;
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switch (channel) {
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case DA9052_ADC_TSI_XP:
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val |= DA9052_TSICONTB_TSIMUX_XP;
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break;
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case DA9052_ADC_TSI_YP:
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val |= DA9052_TSICONTB_TSIMUX_YP;
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break;
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case DA9052_ADC_TSI_XN:
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val |= DA9052_TSICONTB_TSIMUX_XN;
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break;
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case DA9052_ADC_TSI_YN:
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val |= DA9052_TSICONTB_TSIMUX_YN;
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break;
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}
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return da9052_reg_write(hwmon->da9052, DA9052_TSI_CONT_B_REG, val);
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}
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static int da9052_get_tsi_result(struct da9052_hwmon *hwmon, int channel)
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{
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u8 regs[3];
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int msb, lsb, err;
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/* block read to avoid separation of MSB and LSB */
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err = da9052_group_read(hwmon->da9052, DA9052_TSI_X_MSB_REG,
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ARRAY_SIZE(regs), regs);
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if (err)
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return err;
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switch (channel) {
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case DA9052_ADC_TSI_XP:
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case DA9052_ADC_TSI_XN:
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msb = regs[0] << DA9052_TSILSB_TSIXL_BITS;
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lsb = regs[2] & DA9052_TSILSB_TSIXL;
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lsb >>= DA9052_TSILSB_TSIXL_SHIFT;
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break;
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case DA9052_ADC_TSI_YP:
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case DA9052_ADC_TSI_YN:
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msb = regs[1] << DA9052_TSILSB_TSIYL_BITS;
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lsb = regs[2] & DA9052_TSILSB_TSIYL;
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lsb >>= DA9052_TSILSB_TSIYL_SHIFT;
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break;
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default:
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return -EINVAL;
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}
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return msb | lsb;
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}
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static ssize_t __da9052_read_tsi(struct device *dev, int channel)
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{
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struct da9052_hwmon *hwmon = dev_get_drvdata(dev);
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int ret;
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reinit_completion(&hwmon->tsidone);
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ret = da9052_request_tsi_read(hwmon, channel);
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if (ret < 0)
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return ret;
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/* Wait for an conversion done interrupt */
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if (!wait_for_completion_timeout(&hwmon->tsidone,
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msecs_to_jiffies(500)))
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return -ETIMEDOUT;
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return da9052_get_tsi_result(hwmon, channel);
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}
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static ssize_t da9052_read_tsi(struct device *dev,
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struct device_attribute *devattr,
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char *buf)
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{
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struct da9052_hwmon *hwmon = dev_get_drvdata(dev);
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int channel = to_sensor_dev_attr(devattr)->index;
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int ret;
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mutex_lock(&hwmon->hwmon_lock);
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ret = __da9052_read_tsi(dev, channel);
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mutex_unlock(&hwmon->hwmon_lock);
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if (ret < 0)
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return ret;
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else
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return sprintf(buf, "%d\n", input_tsireg_to_mv(hwmon, ret));
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}
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static ssize_t da9052_read_tjunc(struct device *dev,
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struct device_attribute *devattr, char *buf)
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{
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@ -196,43 +302,82 @@ static ssize_t show_label(struct device *dev,
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input_names[to_sensor_dev_attr(devattr)->index]);
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}
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static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, da9052_read_vddout, NULL,
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static umode_t da9052_channel_is_visible(struct kobject *kobj,
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struct attribute *attr, int index)
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{
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struct device *dev = container_of(kobj, struct device, kobj);
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struct da9052_hwmon *hwmon = dev_get_drvdata(dev);
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struct device_attribute *dattr = container_of(attr,
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struct device_attribute, attr);
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(dattr);
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if (!hwmon->tsi_as_adc) {
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switch (sattr->index) {
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case DA9052_ADC_TSI_XP:
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case DA9052_ADC_TSI_YP:
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case DA9052_ADC_TSI_XN:
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case DA9052_ADC_TSI_YN:
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return 0;
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}
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}
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return attr->mode;
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}
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static SENSOR_DEVICE_ATTR(in0_input, 0444, da9052_read_vddout, NULL,
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DA9052_ADC_VDDOUT);
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static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(in0_label, 0444, show_label, NULL,
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DA9052_ADC_VDDOUT);
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static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, da9052_read_vbat, NULL,
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static SENSOR_DEVICE_ATTR(in3_input, 0444, da9052_read_vbat, NULL,
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DA9052_ADC_VBAT);
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static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(in3_label, 0444, show_label, NULL,
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DA9052_ADC_VBAT);
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static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, da9052_read_misc_channel, NULL,
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static SENSOR_DEVICE_ATTR(in4_input, 0444, da9052_read_misc_channel, NULL,
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DA9052_ADC_IN4);
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static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(in4_label, 0444, show_label, NULL,
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DA9052_ADC_IN4);
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static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, da9052_read_misc_channel, NULL,
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static SENSOR_DEVICE_ATTR(in5_input, 0444, da9052_read_misc_channel, NULL,
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DA9052_ADC_IN5);
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static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(in5_label, 0444, show_label, NULL,
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DA9052_ADC_IN5);
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static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, da9052_read_misc_channel, NULL,
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static SENSOR_DEVICE_ATTR(in6_input, 0444, da9052_read_misc_channel, NULL,
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DA9052_ADC_IN6);
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static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(in6_label, 0444, show_label, NULL,
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DA9052_ADC_IN6);
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static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, da9052_read_vbbat, NULL,
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static SENSOR_DEVICE_ATTR(in9_input, 0444, da9052_read_vbbat, NULL,
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DA9052_ADC_VBBAT);
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static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(in9_label, 0444, show_label, NULL,
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DA9052_ADC_VBBAT);
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static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, da9052_read_ich, NULL,
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static SENSOR_DEVICE_ATTR(in70_input, 0444, da9052_read_tsi, NULL,
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DA9052_ADC_TSI_XP);
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static SENSOR_DEVICE_ATTR(in70_label, 0444, show_label, NULL,
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DA9052_ADC_TSI_XP);
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static SENSOR_DEVICE_ATTR(in71_input, 0444, da9052_read_tsi, NULL,
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DA9052_ADC_TSI_XN);
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static SENSOR_DEVICE_ATTR(in71_label, 0444, show_label, NULL,
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DA9052_ADC_TSI_XN);
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static SENSOR_DEVICE_ATTR(in72_input, 0444, da9052_read_tsi, NULL,
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DA9052_ADC_TSI_YP);
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static SENSOR_DEVICE_ATTR(in72_label, 0444, show_label, NULL,
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DA9052_ADC_TSI_YP);
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static SENSOR_DEVICE_ATTR(in73_input, 0444, da9052_read_tsi, NULL,
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DA9052_ADC_TSI_YN);
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static SENSOR_DEVICE_ATTR(in73_label, 0444, show_label, NULL,
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DA9052_ADC_TSI_YN);
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static SENSOR_DEVICE_ATTR(curr1_input, 0444, da9052_read_ich, NULL,
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DA9052_ADC_ICH);
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static SENSOR_DEVICE_ATTR(curr1_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(curr1_label, 0444, show_label, NULL,
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DA9052_ADC_ICH);
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static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, da9052_read_tbat, NULL,
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static SENSOR_DEVICE_ATTR(temp2_input, 0444, da9052_read_tbat, NULL,
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DA9052_ADC_TBAT);
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static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(temp2_label, 0444, show_label, NULL,
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DA9052_ADC_TBAT);
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static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, da9052_read_tjunc, NULL,
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static SENSOR_DEVICE_ATTR(temp8_input, 0444, da9052_read_tjunc, NULL,
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DA9052_ADC_TJUNC);
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static SENSOR_DEVICE_ATTR(temp8_label, S_IRUGO, show_label, NULL,
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static SENSOR_DEVICE_ATTR(temp8_label, 0444, show_label, NULL,
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DA9052_ADC_TJUNC);
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static struct attribute *da9052_attrs[] = {
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@ -246,6 +391,14 @@ static struct attribute *da9052_attrs[] = {
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&sensor_dev_attr_in5_label.dev_attr.attr,
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&sensor_dev_attr_in6_input.dev_attr.attr,
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&sensor_dev_attr_in6_label.dev_attr.attr,
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&sensor_dev_attr_in70_input.dev_attr.attr,
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&sensor_dev_attr_in70_label.dev_attr.attr,
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&sensor_dev_attr_in71_input.dev_attr.attr,
|
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&sensor_dev_attr_in71_label.dev_attr.attr,
|
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&sensor_dev_attr_in72_input.dev_attr.attr,
|
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&sensor_dev_attr_in72_label.dev_attr.attr,
|
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&sensor_dev_attr_in73_input.dev_attr.attr,
|
||||
&sensor_dev_attr_in73_label.dev_attr.attr,
|
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&sensor_dev_attr_in9_input.dev_attr.attr,
|
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&sensor_dev_attr_in9_label.dev_attr.attr,
|
||||
&sensor_dev_attr_curr1_input.dev_attr.attr,
|
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@ -257,29 +410,117 @@ static struct attribute *da9052_attrs[] = {
|
||||
NULL
|
||||
};
|
||||
|
||||
ATTRIBUTE_GROUPS(da9052);
|
||||
static const struct attribute_group da9052_group = {
|
||||
.attrs = da9052_attrs,
|
||||
.is_visible = da9052_channel_is_visible,
|
||||
};
|
||||
__ATTRIBUTE_GROUPS(da9052);
|
||||
|
||||
static irqreturn_t da9052_tsi_datardy_irq(int irq, void *data)
|
||||
{
|
||||
struct da9052_hwmon *hwmon = data;
|
||||
|
||||
complete(&hwmon->tsidone);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int da9052_hwmon_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct da9052_hwmon *hwmon;
|
||||
struct device *hwmon_dev;
|
||||
int err;
|
||||
|
||||
hwmon = devm_kzalloc(dev, sizeof(struct da9052_hwmon), GFP_KERNEL);
|
||||
if (!hwmon)
|
||||
return -ENOMEM;
|
||||
|
||||
platform_set_drvdata(pdev, hwmon);
|
||||
|
||||
mutex_init(&hwmon->hwmon_lock);
|
||||
hwmon->da9052 = dev_get_drvdata(pdev->dev.parent);
|
||||
|
||||
init_completion(&hwmon->tsidone);
|
||||
|
||||
hwmon->tsi_as_adc =
|
||||
device_property_read_bool(pdev->dev.parent, "dlg,tsi-as-adc");
|
||||
|
||||
if (hwmon->tsi_as_adc) {
|
||||
hwmon->tsiref = devm_regulator_get(pdev->dev.parent, "tsiref");
|
||||
if (IS_ERR(hwmon->tsiref)) {
|
||||
err = PTR_ERR(hwmon->tsiref);
|
||||
dev_err(&pdev->dev, "failed to get tsiref: %d", err);
|
||||
return err;
|
||||
}
|
||||
|
||||
err = regulator_enable(hwmon->tsiref);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
hwmon->tsiref_mv = regulator_get_voltage(hwmon->tsiref);
|
||||
if (hwmon->tsiref_mv < 0) {
|
||||
err = hwmon->tsiref_mv;
|
||||
goto exit_regulator;
|
||||
}
|
||||
|
||||
/* convert from microvolt (DT) to millivolt (hwmon) */
|
||||
hwmon->tsiref_mv /= 1000;
|
||||
|
||||
/* TSIREF limits from datasheet */
|
||||
if (hwmon->tsiref_mv < 1800 || hwmon->tsiref_mv > 2600) {
|
||||
dev_err(hwmon->da9052->dev, "invalid TSIREF voltage: %d",
|
||||
hwmon->tsiref_mv);
|
||||
err = -ENXIO;
|
||||
goto exit_regulator;
|
||||
}
|
||||
|
||||
/* disable touchscreen features */
|
||||
da9052_reg_write(hwmon->da9052, DA9052_TSI_CONT_A_REG, 0x00);
|
||||
|
||||
err = da9052_request_irq(hwmon->da9052, DA9052_IRQ_TSIREADY,
|
||||
"tsiready-irq", da9052_tsi_datardy_irq,
|
||||
hwmon);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "Failed to register TSIRDY IRQ: %d",
|
||||
err);
|
||||
goto exit_regulator;
|
||||
}
|
||||
}
|
||||
|
||||
hwmon_dev = devm_hwmon_device_register_with_groups(dev, "da9052",
|
||||
hwmon,
|
||||
da9052_groups);
|
||||
return PTR_ERR_OR_ZERO(hwmon_dev);
|
||||
err = PTR_ERR_OR_ZERO(hwmon_dev);
|
||||
if (err)
|
||||
goto exit_irq;
|
||||
|
||||
return 0;
|
||||
|
||||
exit_irq:
|
||||
if (hwmon->tsi_as_adc)
|
||||
da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);
|
||||
exit_regulator:
|
||||
if (hwmon->tsiref)
|
||||
regulator_disable(hwmon->tsiref);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int da9052_hwmon_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct da9052_hwmon *hwmon = platform_get_drvdata(pdev);
|
||||
|
||||
if (hwmon->tsi_as_adc) {
|
||||
da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);
|
||||
regulator_disable(hwmon->tsiref);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver da9052_hwmon_driver = {
|
||||
.probe = da9052_hwmon_probe,
|
||||
.remove = da9052_hwmon_remove,
|
||||
.driver = {
|
||||
.name = "da9052-hwmon",
|
||||
},
|
||||
|
||||
@ -18,6 +18,7 @@
|
||||
#include <linux/mfd/core.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/property.h>
|
||||
|
||||
#include <linux/mfd/da9052/da9052.h>
|
||||
#include <linux/mfd/da9052/pdata.h>
|
||||
@ -518,9 +519,6 @@ static const struct mfd_cell da9052_subdev_info[] = {
|
||||
{
|
||||
.name = "da9052-wled3",
|
||||
},
|
||||
{
|
||||
.name = "da9052-tsi",
|
||||
},
|
||||
{
|
||||
.name = "da9052-bat",
|
||||
},
|
||||
@ -529,6 +527,10 @@ static const struct mfd_cell da9052_subdev_info[] = {
|
||||
},
|
||||
};
|
||||
|
||||
static const struct mfd_cell da9052_tsi_subdev_info[] = {
|
||||
{ .name = "da9052-tsi" },
|
||||
};
|
||||
|
||||
const struct regmap_config da9052_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
@ -619,9 +621,27 @@ int da9052_device_init(struct da9052 *da9052, u8 chip_id)
|
||||
goto err;
|
||||
}
|
||||
|
||||
/*
|
||||
* Check if touchscreen pins are used are analogue input instead
|
||||
* of having a touchscreen connected to them. The analogue input
|
||||
* functionality will be provided by hwmon driver (if enabled).
|
||||
*/
|
||||
if (!device_property_read_bool(da9052->dev, "dlg,tsi-as-adc")) {
|
||||
ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO,
|
||||
da9052_tsi_subdev_info,
|
||||
ARRAY_SIZE(da9052_tsi_subdev_info),
|
||||
NULL, 0, NULL);
|
||||
if (ret) {
|
||||
dev_err(da9052->dev, "failed to add TSI subdev: %d\n",
|
||||
ret);
|
||||
goto err;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
mfd_remove_devices(da9052->dev);
|
||||
da9052_irq_exit(da9052);
|
||||
|
||||
return ret;
|
||||
|
||||
@ -45,6 +45,12 @@
|
||||
#define DA9052_ADC_TJUNC 8
|
||||
#define DA9052_ADC_VBBAT 9
|
||||
|
||||
/* TSI channel has its own 4 channel mux */
|
||||
#define DA9052_ADC_TSI_XP 70
|
||||
#define DA9052_ADC_TSI_XN 71
|
||||
#define DA9052_ADC_TSI_YP 72
|
||||
#define DA9052_ADC_TSI_YN 73
|
||||
|
||||
#define DA9052_IRQ_DCIN 0
|
||||
#define DA9052_IRQ_VBUS 1
|
||||
#define DA9052_IRQ_DCINREM 2
|
||||
|
||||
@ -690,7 +690,10 @@
|
||||
/* TSI CONTROL REGISTER B BITS */
|
||||
#define DA9052_TSICONTB_ADCREF 0X80
|
||||
#define DA9052_TSICONTB_TSIMAN 0X40
|
||||
#define DA9052_TSICONTB_TSIMUX 0X30
|
||||
#define DA9052_TSICONTB_TSIMUX_XP 0X00
|
||||
#define DA9052_TSICONTB_TSIMUX_YP 0X10
|
||||
#define DA9052_TSICONTB_TSIMUX_XN 0X20
|
||||
#define DA9052_TSICONTB_TSIMUX_YN 0X30
|
||||
#define DA9052_TSICONTB_TSISEL3 0X08
|
||||
#define DA9052_TSICONTB_TSISEL2 0X04
|
||||
#define DA9052_TSICONTB_TSISEL1 0X02
|
||||
@ -705,8 +708,14 @@
|
||||
/* TSI CO-ORDINATE LSB RESULT REGISTER BITS */
|
||||
#define DA9052_TSILSB_PENDOWN 0X40
|
||||
#define DA9052_TSILSB_TSIZL 0X30
|
||||
#define DA9052_TSILSB_TSIZL_SHIFT 4
|
||||
#define DA9052_TSILSB_TSIZL_BITS 2
|
||||
#define DA9052_TSILSB_TSIYL 0X0C
|
||||
#define DA9052_TSILSB_TSIYL_SHIFT 2
|
||||
#define DA9052_TSILSB_TSIYL_BITS 2
|
||||
#define DA9052_TSILSB_TSIXL 0X03
|
||||
#define DA9052_TSILSB_TSIXL_SHIFT 0
|
||||
#define DA9052_TSILSB_TSIXL_BITS 2
|
||||
|
||||
/* TSI Z MEASUREMENT MSB RESULT REGISTER BIT */
|
||||
#define DA9052_TSIZMSB_TSIZM 0XFF
|
||||
|
||||
Loading…
Reference in New Issue
Block a user