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-rw-r--r--drivers/hwmon/pmbus/adm1275.c6
-rw-r--r--drivers/hwmon/pmbus/max16064.c6
-rw-r--r--drivers/hwmon/pmbus/max34440.c18
-rw-r--r--drivers/hwmon/pmbus/max8688.c8
-rw-r--r--drivers/hwmon/pmbus/pmbus.c34
-rw-r--r--drivers/hwmon/pmbus/pmbus.h7
-rw-r--r--drivers/hwmon/pmbus/pmbus_core.c60
7 files changed, 105 insertions, 34 deletions
diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c
index 8bc1bd663721..71770ffbdaf6 100644
--- a/drivers/hwmon/pmbus/adm1275.c
+++ b/drivers/hwmon/pmbus/adm1275.c
@@ -50,9 +50,9 @@ static int adm1275_probe(struct i2c_client *client,
}
info->pages = 1;
- info->direct[PSC_VOLTAGE_IN] = true;
- info->direct[PSC_VOLTAGE_OUT] = true;
- info->direct[PSC_CURRENT_OUT] = true;
+ info->format[PSC_VOLTAGE_IN] = direct;
+ info->format[PSC_VOLTAGE_OUT] = direct;
+ info->format[PSC_CURRENT_OUT] = direct;
info->m[PSC_CURRENT_OUT] = 807;
info->b[PSC_CURRENT_OUT] = 20475;
info->R[PSC_CURRENT_OUT] = -1;
diff --git a/drivers/hwmon/pmbus/max16064.c b/drivers/hwmon/pmbus/max16064.c
index 1d6d717060d3..78e20bca53a9 100644
--- a/drivers/hwmon/pmbus/max16064.c
+++ b/drivers/hwmon/pmbus/max16064.c
@@ -27,9 +27,9 @@
static struct pmbus_driver_info max16064_info = {
.pages = 4,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .format[PSC_TEMPERATURE] = direct,
.m[PSC_VOLTAGE_IN] = 19995,
.b[PSC_VOLTAGE_IN] = 0,
.R[PSC_VOLTAGE_IN] = -1,
diff --git a/drivers/hwmon/pmbus/max34440.c b/drivers/hwmon/pmbus/max34440.c
index db11e1a175b2..2e30046a116e 100644
--- a/drivers/hwmon/pmbus/max34440.c
+++ b/drivers/hwmon/pmbus/max34440.c
@@ -72,10 +72,10 @@ static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
static struct pmbus_driver_info max34440_info[] = {
[max34440] = {
.pages = 14,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
- .direct[PSC_CURRENT_OUT] = true,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .format[PSC_TEMPERATURE] = direct,
+ .format[PSC_CURRENT_OUT] = direct,
.m[PSC_VOLTAGE_IN] = 1,
.b[PSC_VOLTAGE_IN] = 0,
.R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */
@@ -112,11 +112,11 @@ static struct pmbus_driver_info max34440_info[] = {
},
[max34441] = {
.pages = 12,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
- .direct[PSC_CURRENT_OUT] = true,
- .direct[PSC_FAN] = true,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .format[PSC_TEMPERATURE] = direct,
+ .format[PSC_CURRENT_OUT] = direct,
+ .format[PSC_FAN] = direct,
.m[PSC_VOLTAGE_IN] = 1,
.b[PSC_VOLTAGE_IN] = 0,
.R[PSC_VOLTAGE_IN] = 3,
diff --git a/drivers/hwmon/pmbus/max8688.c b/drivers/hwmon/pmbus/max8688.c
index 7fb93f4e9f21..ddc8a64c2ba5 100644
--- a/drivers/hwmon/pmbus/max8688.c
+++ b/drivers/hwmon/pmbus/max8688.c
@@ -91,10 +91,10 @@ static int max8688_read_byte_data(struct i2c_client *client, int page, int reg)
static struct pmbus_driver_info max8688_info = {
.pages = 1,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
- .direct[PSC_CURRENT_OUT] = true,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .format[PSC_TEMPERATURE] = direct,
+ .format[PSC_CURRENT_OUT] = direct,
.m[PSC_VOLTAGE_IN] = 19995,
.b[PSC_VOLTAGE_IN] = 0,
.R[PSC_VOLTAGE_IN] = -1,
diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c
index 9b1f0c37ef77..4d8e31bcd7a3 100644
--- a/drivers/hwmon/pmbus/pmbus.c
+++ b/drivers/hwmon/pmbus/pmbus.c
@@ -96,6 +96,8 @@ static void pmbus_find_sensor_groups(struct i2c_client *client,
static int pmbus_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
+ int ret = 0;
+
if (!info->pages) {
/*
* Check if the PAGE command is supported. If it is,
@@ -117,6 +119,27 @@ static int pmbus_identify(struct i2c_client *client,
}
}
+ if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE)) {
+ int vout_mode;
+
+ vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
+ if (vout_mode >= 0 && vout_mode != 0xff) {
+ switch (vout_mode >> 5) {
+ case 0:
+ break;
+ case 1:
+ info->format[PSC_VOLTAGE_OUT] = vid;
+ break;
+ case 2:
+ info->format[PSC_VOLTAGE_OUT] = direct;
+ break;
+ default:
+ ret = -ENODEV;
+ goto abort;
+ }
+ }
+ }
+
/*
* We should check if the COEFFICIENTS register is supported.
* If it is, and the chip is configured for direct mode, we can read
@@ -125,13 +148,18 @@ static int pmbus_identify(struct i2c_client *client,
*
* To do this, we will need access to a chip which actually supports the
* COEFFICIENTS command, since the command is too complex to implement
- * without testing it.
+ * without testing it. Until then, abort if a chip configured for direct
+ * mode was detected.
*/
+ if (info->format[PSC_VOLTAGE_OUT] == direct) {
+ ret = -ENODEV;
+ goto abort;
+ }
/* Try to find sensor groups */
pmbus_find_sensor_groups(client, info);
-
- return 0;
+abort:
+ return ret;
}
static int pmbus_probe(struct i2c_client *client,
diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
index 50647ab7235a..cc5b6a23260b 100644
--- a/drivers/hwmon/pmbus/pmbus.h
+++ b/drivers/hwmon/pmbus/pmbus.h
@@ -266,11 +266,11 @@ enum pmbus_sensor_classes {
#define PMBUS_HAVE_STATUS_FAN12 (1 << 16)
#define PMBUS_HAVE_STATUS_FAN34 (1 << 17)
+enum pmbus_data_format { linear = 0, direct, vid };
+
struct pmbus_driver_info {
int pages; /* Total number of pages */
- bool direct[PSC_NUM_CLASSES];
- /* true if device uses direct data format
- for the given sensor class */
+ enum pmbus_data_format format[PSC_NUM_CLASSES];
/*
* Support one set of coefficients for each sensor type
* Used for chips providing data in direct mode.
@@ -299,6 +299,7 @@ struct pmbus_driver_info {
int pmbus_set_page(struct i2c_client *client, u8 page);
int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg);
+int pmbus_read_byte_data(struct i2c_client *client, u8 page, u8 reg);
void pmbus_clear_faults(struct i2c_client *client);
bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg);
bool pmbus_check_word_register(struct i2c_client *client, int page, int reg);
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 8e31a8e2c746..cef763c7da3f 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -197,7 +197,7 @@ int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg)
}
EXPORT_SYMBOL_GPL(pmbus_read_word_data);
-static int pmbus_read_byte_data(struct i2c_client *client, u8 page, u8 reg)
+int pmbus_read_byte_data(struct i2c_client *client, u8 page, u8 reg)
{
int rv;
@@ -207,6 +207,7 @@ static int pmbus_read_byte_data(struct i2c_client *client, u8 page, u8 reg)
return i2c_smbus_read_byte_data(client, reg);
}
+EXPORT_SYMBOL_GPL(pmbus_read_byte_data);
static void pmbus_clear_fault_page(struct i2c_client *client, int page)
{
@@ -443,15 +444,37 @@ static long pmbus_reg2data_direct(struct pmbus_data *data,
return (val - b) / m;
}
+/*
+ * Convert VID sensor values to milli- or micro-units
+ * depending on sensor type.
+ * We currently only support VR11.
+ */
+static long pmbus_reg2data_vid(struct pmbus_data *data,
+ struct pmbus_sensor *sensor)
+{
+ long val = sensor->data;
+
+ if (val < 0x02 || val > 0xb2)
+ return 0;
+ return DIV_ROUND_CLOSEST(160000 - (val - 2) * 625, 100);
+}
+
static long pmbus_reg2data(struct pmbus_data *data, struct pmbus_sensor *sensor)
{
long val;
- if (data->info->direct[sensor->class])
+ switch (data->info->format[sensor->class]) {
+ case direct:
val = pmbus_reg2data_direct(data, sensor);
- else
+ break;
+ case vid:
+ val = pmbus_reg2data_vid(data, sensor);
+ break;
+ case linear:
+ default:
val = pmbus_reg2data_linear(data, sensor);
-
+ break;
+ }
return val;
}
@@ -561,16 +584,31 @@ static u16 pmbus_data2reg_direct(struct pmbus_data *data,
return val;
}
+static u16 pmbus_data2reg_vid(struct pmbus_data *data,
+ enum pmbus_sensor_classes class, long val)
+{
+ val = SENSORS_LIMIT(val, 500, 1600);
+
+ return 2 + DIV_ROUND_CLOSEST((1600 - val) * 100, 625);
+}
+
static u16 pmbus_data2reg(struct pmbus_data *data,
enum pmbus_sensor_classes class, long val)
{
u16 regval;
- if (data->info->direct[class])
+ switch (data->info->format[class]) {
+ case direct:
regval = pmbus_data2reg_direct(data, class, val);
- else
+ break;
+ case vid:
+ regval = pmbus_data2reg_vid(data, class, val);
+ break;
+ case linear:
+ default:
regval = pmbus_data2reg_linear(data, class, val);
-
+ break;
+ }
return regval;
}
@@ -1380,7 +1418,7 @@ static int pmbus_identify_common(struct i2c_client *client,
*/
switch (vout_mode >> 5) {
case 0: /* linear mode */
- if (data->info->direct[PSC_VOLTAGE_OUT])
+ if (data->info->format[PSC_VOLTAGE_OUT] != linear)
return -ENODEV;
exponent = vout_mode & 0x1f;
@@ -1389,8 +1427,12 @@ static int pmbus_identify_common(struct i2c_client *client,
exponent |= ~0x1f;
data->exponent = exponent;
break;
+ case 1: /* VID mode */
+ if (data->info->format[PSC_VOLTAGE_OUT] != vid)
+ return -ENODEV;
+ break;
case 2: /* direct mode */
- if (!data->info->direct[PSC_VOLTAGE_OUT])
+ if (data->info->format[PSC_VOLTAGE_OUT] != direct)
return -ENODEV;
break;
default:
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.