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path: root/drivers/hwmon/pmbus/adm1275.c
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Diffstat (limited to 'drivers/hwmon/pmbus/adm1275.c')
-rw-r--r--drivers/hwmon/pmbus/adm1275.c84
1 files changed, 83 insertions, 1 deletions
diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c
index 188af4c89f40..006b1eff758c 100644
--- a/drivers/hwmon/pmbus/adm1275.c
+++ b/drivers/hwmon/pmbus/adm1275.c
@@ -22,9 +22,10 @@
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/bitops.h>
+#include <linux/of.h>
#include "pmbus.h"
-enum chips { adm1075, adm1275, adm1276, adm1293, adm1294 };
+enum chips { adm1075, adm1275, adm1276, adm1278, adm1293, adm1294 };
#define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0)
#define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5)
@@ -41,6 +42,10 @@ enum chips { adm1075, adm1275, adm1276, adm1293, adm1294 };
#define ADM1075_IRANGE_25 BIT(3)
#define ADM1075_IRANGE_MASK (BIT(3) | BIT(4))
+#define ADM1278_TEMP1_EN BIT(3)
+#define ADM1278_VIN_EN BIT(2)
+#define ADM1278_VOUT_EN BIT(1)
+
#define ADM1293_IRANGE_25 0
#define ADM1293_IRANGE_50 BIT(6)
#define ADM1293_IRANGE_100 BIT(7)
@@ -54,6 +59,7 @@ enum chips { adm1075, adm1275, adm1276, adm1293, adm1294 };
#define ADM1293_VAUX_EN BIT(1)
+#define ADM1278_PEAK_TEMP 0xd7
#define ADM1275_IOUT_WARN2_LIMIT 0xd7
#define ADM1275_DEVICE_CONFIG 0xd8
@@ -80,6 +86,7 @@ struct adm1275_data {
bool have_iout_min;
bool have_pin_min;
bool have_pin_max;
+ bool have_temp_max;
struct pmbus_driver_info info;
};
@@ -113,6 +120,13 @@ static const struct coefficients adm1276_coefficients[] = {
[4] = { 2115, 0, -1 }, /* power, vrange not set */
};
+static const struct coefficients adm1278_coefficients[] = {
+ [0] = { 19599, 0, -2 }, /* voltage */
+ [1] = { 800, 20475, -1 }, /* current */
+ [2] = { 6123, 0, -2 }, /* power */
+ [3] = { 42, 31880, -1 }, /* temperature */
+};
+
static const struct coefficients adm1293_coefficients[] = {
[0] = { 3333, -1, 0 }, /* voltage, vrange 1.2V */
[1] = { 5552, -5, -1 }, /* voltage, vrange 7.4V */
@@ -196,6 +210,11 @@ static int adm1275_read_word_data(struct i2c_client *client, int page, int reg)
return -ENXIO;
ret = pmbus_read_word_data(client, 0, ADM1276_PEAK_PIN);
break;
+ case PMBUS_VIRT_READ_TEMP_MAX:
+ if (!data->have_temp_max)
+ return -ENXIO;
+ ret = pmbus_read_word_data(client, 0, ADM1278_PEAK_TEMP);
+ break;
case PMBUS_VIRT_RESET_IOUT_HISTORY:
case PMBUS_VIRT_RESET_VOUT_HISTORY:
case PMBUS_VIRT_RESET_VIN_HISTORY:
@@ -204,6 +223,10 @@ static int adm1275_read_word_data(struct i2c_client *client, int page, int reg)
if (!data->have_pin_max)
return -ENXIO;
break;
+ case PMBUS_VIRT_RESET_TEMP_HISTORY:
+ if (!data->have_temp_max)
+ return -ENXIO;
+ break;
default:
ret = -ENODATA;
break;
@@ -245,6 +268,9 @@ static int adm1275_write_word_data(struct i2c_client *client, int page, int reg,
ret = pmbus_write_word_data(client, 0,
ADM1293_PIN_MIN, 0);
break;
+ case PMBUS_VIRT_RESET_TEMP_HISTORY:
+ ret = pmbus_write_word_data(client, 0, ADM1278_PEAK_TEMP, 0);
+ break;
default:
ret = -ENODATA;
break;
@@ -312,12 +338,26 @@ static const struct i2c_device_id adm1275_id[] = {
{ "adm1075", adm1075 },
{ "adm1275", adm1275 },
{ "adm1276", adm1276 },
+ { "adm1278", adm1278 },
{ "adm1293", adm1293 },
{ "adm1294", adm1294 },
{ }
};
MODULE_DEVICE_TABLE(i2c, adm1275_id);
+#ifdef CONFIG_OF
+static const struct of_device_id adm1275_of_match[] = {
+ { .compatible = "adi,adm1075" },
+ { .compatible = "adi,adm1275" },
+ { .compatible = "adi,adm1276" },
+ { .compatible = "adi,adm1278" },
+ { .compatible = "adi,adm1293" },
+ { .compatible = "adi,adm1294" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adm1275_of_match);
+#endif
+
static int adm1275_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -329,6 +369,7 @@ static int adm1275_probe(struct i2c_client *client,
const struct i2c_device_id *mid;
const struct coefficients *coefficients;
int vindex = -1, voindex = -1, cindex = -1, pindex = -1;
+ int tindex = -1;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_BYTE_DATA
@@ -386,6 +427,7 @@ static int adm1275_probe(struct i2c_client *client,
info->format[PSC_VOLTAGE_OUT] = direct;
info->format[PSC_CURRENT_OUT] = direct;
info->format[PSC_POWER] = direct;
+ info->format[PSC_TEMPERATURE] = direct;
info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
info->read_word_data = adm1275_read_word_data;
@@ -460,6 +502,40 @@ static int adm1275_probe(struct i2c_client *client,
info->func[0] |=
PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
break;
+ case adm1278:
+ data->have_vout = true;
+ data->have_pin_max = true;
+ data->have_temp_max = true;
+
+ coefficients = adm1278_coefficients;
+ vindex = 0;
+ cindex = 1;
+ pindex = 2;
+ tindex = 3;
+
+ info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT;
+
+ /* By default when reset VOUT is not enabled */
+ if (!(config & ADM1278_VOUT_EN)) {
+ config |= ADM1278_VOUT_EN;
+ ret = i2c_smbus_write_byte_data(client,
+ ADM1275_PMON_CONFIG, (u8)config);
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "Fail to write ADM1275_PMON_CONFIG\n");
+ return ret;
+ }
+ }
+
+ if (config & ADM1278_TEMP1_EN)
+ info->func[0] |=
+ PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
+ if (config & ADM1278_VIN_EN)
+ info->func[0] |= PMBUS_HAVE_VIN;
+ if (config & ADM1278_VOUT_EN)
+ info->func[0] |=
+ PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
+ break;
case adm1293:
case adm1294:
data->have_iout_min = true;
@@ -537,6 +613,11 @@ static int adm1275_probe(struct i2c_client *client,
info->b[PSC_POWER] = coefficients[pindex].b;
info->R[PSC_POWER] = coefficients[pindex].R;
}
+ if (tindex >= 0) {
+ info->m[PSC_TEMPERATURE] = coefficients[tindex].m;
+ info->b[PSC_TEMPERATURE] = coefficients[tindex].b;
+ info->R[PSC_TEMPERATURE] = coefficients[tindex].R;
+ }
return pmbus_do_probe(client, id, info);
}
@@ -544,6 +625,7 @@ static int adm1275_probe(struct i2c_client *client,
static struct i2c_driver adm1275_driver = {
.driver = {
.name = "adm1275",
+ .of_match_table = of_match_ptr(adm1275_of_match),
},
.probe = adm1275_probe,
.remove = pmbus_do_remove,
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-03 12:40:34 +0300