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authorGuenter Roeck <linux@roeck-us.net>2018-05-21 07:52:40 -0700
committerGuenter Roeck <linux@roeck-us.net>2018-05-21 07:52:40 -0700
commit9e3699fcfd385b61b56408105f33c72b14442624 (patch)
tree010b2f37b42590e8ab4ea2c675c27c33aaee33e1 /drivers/hwmon
parent5d9ca430ea3ae87e41a69333ca30533e9cdc17cf (diff)
parented645cccc0ebc0329916b6df039dd792d9105c9d (diff)
downloadlinux-9e3699fcfd385b61b56408105f33c72b14442624.tar.bz2
Merge tag 'ib-mfd-hwmon-v4.18' into hwmon-next
Immutable branch between MFD and HWMON due for the v4.18 merge window
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/mc13783-adc.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/hwmon/mc13783-adc.c b/drivers/hwmon/mc13783-adc.c
index 960a1db6f269..67860ad2e3d9 100644
--- a/drivers/hwmon/mc13783-adc.c
+++ b/drivers/hwmon/mc13783-adc.c
@@ -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
};