hwmon: MC13783: Add uid and die temperature sensor inputs (ed645ccc) · Commits · 戴 / test

drivers/hwmon/mc13783-adc.c

+60 −0

Original line number	Diff line number	Diff line
		@@ -63,6 +63,10 @@ static int mc13783_adc_read(struct device *dev,
		if (ret)
		return ret;

		/* ADIN7 subchannels */
		if (channel >= 16)
		channel = 7;

		channel &= 0x7;

		*val = (sample[channel % 4] >> (channel > 3 ? 14 : 2)) & 0x3ff;
		@@ -111,6 +115,57 @@ static ssize_t mc13783_adc_read_gp(struct device *dev,
		return sprintf(buf, "%u\n", val);
		}

		static ssize_t mc13783_adc_read_uid(struct device *dev,
		struct device_attribute devattr, char buf)
		{
		unsigned int val;
		struct platform_device *pdev = to_platform_device(dev);
		kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data;
		int ret = mc13783_adc_read(dev, devattr, &val);

		if (ret)
		return ret;

		if (driver_data & MC13783_ADC_BPDIV2)
		/* MC13892 have 1/2 divider, input range is [0, 4.800V] */
		val = DIV_ROUND_CLOSEST(val * 4800, 1024);
		else
		/* MC13783 have 0.9 divider, input range is [0, 2.555V] */
		val = DIV_ROUND_CLOSEST(val * 2555, 1024);

		return sprintf(buf, "%u\n", val);
		}

		static ssize_t mc13783_adc_read_temp(struct device *dev,
		struct device_attribute devattr, char buf)
		{
		unsigned int val;
		struct platform_device *pdev = to_platform_device(dev);
		kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data;
		int ret = mc13783_adc_read(dev, devattr, &val);

		if (ret)
		return ret;

		if (driver_data & MC13783_ADC_BPDIV2) {
		/*
		* MC13892:
		* Die Temperature Read Out Code at 25C 680
		* Temperature change per LSB +0.4244C
		*/
		ret = DIV_ROUND_CLOSEST(-2635920 + val * 4244, 10);
		} else {
		/*
		* MC13783:
		* Die Temperature Read Out Code at 25C 282
		* Temperature change per LSB -1.14C
		*/
		ret = 346480 - 1140 * val;
		}

		return sprintf(buf, "%d\n", ret);
		}

		static DEVICE_ATTR_RO(name);
		static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, mc13783_adc_read_bp, NULL, 2);
		static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, mc13783_adc_read_gp, NULL, 5);
		@@ -124,6 +179,9 @@ static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, mc13783_adc_read_gp, NULL, 12);
		static SENSOR_DEVICE_ATTR(in13_input, S_IRUGO, mc13783_adc_read_gp, NULL, 13);
		static SENSOR_DEVICE_ATTR(in14_input, S_IRUGO, mc13783_adc_read_gp, NULL, 14);
		static SENSOR_DEVICE_ATTR(in15_input, S_IRUGO, mc13783_adc_read_gp, NULL, 15);
		static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, mc13783_adc_read_uid, NULL, 16);
		static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
		mc13783_adc_read_temp, NULL, 17);

		static struct attribute *mc13783_attr_base[] = {
		&dev_attr_name.attr,
		@@ -131,6 +189,8 @@ static struct attribute *mc13783_attr_base[] = {
		&sensor_dev_attr_in5_input.dev_attr.attr,
		&sensor_dev_attr_in6_input.dev_attr.attr,
		&sensor_dev_attr_in7_input.dev_attr.attr,
		&sensor_dev_attr_in16_input.dev_attr.attr,
		&sensor_dev_attr_temp1_input.dev_attr.attr,
		NULL
		};

drivers/mfd/mc13xxx-core.c

+14 −1

Original line number	Diff line number	Diff line
		@@ -279,8 +279,21 @@ int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode,
		adc0 = MC13XXX_ADC0_ADINC1 \| MC13XXX_ADC0_ADINC2;
		adc1 = MC13XXX_ADC1_ADEN \| MC13XXX_ADC1_ADTRIGIGN \| MC13XXX_ADC1_ASC;

		if (channel > 7)
		/*
		* Channels mapped through ADIN7:
		* 7 - General purpose ADIN7
		* 16 - UID
		* 17 - Die temperature
		*/
		if (channel > 7 && channel < 16) {
		adc1 \|= MC13XXX_ADC1_ADSEL;
		} else if (channel == 16) {
		adc0 \|= MC13XXX_ADC0_ADIN7SEL_UID;
		channel = 7;
		} else if (channel == 17) {
		adc0 \|= MC13XXX_ADC0_ADIN7SEL_DIE;
		channel = 7;
		}

		switch (mode) {
		case MC13XXX_ADC_MODE_TS:

include/linux/mfd/mc13xxx.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -243,6 +243,8 @@ struct mc13xxx_platform_data {
		#define MC13XXX_ADC0_LICELLCON (1 << 0)
		#define MC13XXX_ADC0_CHRGICON (1 << 1)
		#define MC13XXX_ADC0_BATICON (1 << 2)
		#define MC13XXX_ADC0_ADIN7SEL_DIE (1 << 4)
		#define MC13XXX_ADC0_ADIN7SEL_UID (2 << 4)
		#define MC13XXX_ADC0_ADREFEN (1 << 10)
		#define MC13XXX_ADC0_TSMOD0 (1 << 12)
		#define MC13XXX_ADC0_TSMOD1 (1 << 13)

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