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hwmon: (pmbus) Always call _pmbus_read_byte in core driver

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Always call _pmbus_read_byte() instead of pmbus_read_byte() in PMBus core
driver. With this change, device specific read functions can be implemented for
all registers.

Since the device specific read_byte function is now always called, we need to be
more careful with page validations. Only fail if the passed page number is larger
than 0, since -1 means "current page".

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
This commit is contained in:
Guenter Roeck 2011-07-29 22:19:39 -07:00
parent 179144a0d4
commit da8e48ab48
6 changed files with 17 additions and 15 deletions
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2
drivers/hwmon/pmbus/adm1275.c
View File

@ -144,7 +144,7 @@ static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg)
const struct adm1275_data *data = to_adm1275_data(info);
int mfr_status, ret;
if (page)
if (page > 0)
return -ENXIO;
switch (reg) {

4
drivers/hwmon/pmbus/lm25066.c
View File

@ -166,8 +166,8 @@ static int lm25066_write_byte(struct i2c_client *client, int page, u8 value)
if (page > 1)
return -ENXIO;
if (page == 0)
return pmbus_write_byte(client, 0, value);
if (page <= 0)
return pmbus_write_byte(client, page, value);
return 0;
}

10
drivers/hwmon/pmbus/max34440.c
View File

@ -93,12 +93,14 @@ static int max34440_write_word_data(struct i2c_client *client, int page,
static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
{
int ret;
int ret = 0;
int mfg_status;
ret = pmbus_set_page(client, page);
if (ret < 0)
return ret;
if (page >= 0) {
ret = pmbus_set_page(client, page);
if (ret < 0)
return ret;
}
switch (reg) {
case PMBUS_STATUS_IOUT:

2
drivers/hwmon/pmbus/max8688.c
View File

@ -101,7 +101,7 @@ static int max8688_read_byte_data(struct i2c_client *client, int page, int reg)
int ret = 0;
int mfg_status;
if (page)
if (page > 0)
return -ENXIO;
switch (reg) {

10
drivers/hwmon/pmbus/pmbus_core.c
View File

@ -316,9 +316,9 @@ static int pmbus_check_status_cml(struct i2c_client *client)
{
int status, status2;
status = pmbus_read_byte_data(client, -1, PMBUS_STATUS_BYTE);
status = _pmbus_read_byte_data(client, -1, PMBUS_STATUS_BYTE);
if (status < 0 || (status & PB_STATUS_CML)) {
status2 = pmbus_read_byte_data(client, -1, PMBUS_STATUS_CML);
status2 = _pmbus_read_byte_data(client, -1, PMBUS_STATUS_CML);
if (status2 < 0 || (status2 & PB_CML_FAULT_INVALID_COMMAND))
return -EIO;
}
@ -371,8 +371,8 @@ static struct pmbus_data *pmbus_update_device(struct device *dev)
for (i = 0; i < info->pages; i++)
data->status[PB_STATUS_BASE + i]
= pmbus_read_byte_data(client, i,
PMBUS_STATUS_BYTE);
= _pmbus_read_byte_data(client, i,
PMBUS_STATUS_BYTE);
for (i = 0; i < info->pages; i++) {
if (!(info->func[i] & PMBUS_HAVE_STATUS_VOUT))
continue;
@ -1596,7 +1596,7 @@ static int pmbus_identify_common(struct i2c_client *client,
int vout_mode = -1, exponent;
if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE))
vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
vout_mode = _pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
if (vout_mode >= 0 && vout_mode != 0xff) {
/*
* Not all chips support the VOUT_MODE command,

4
drivers/hwmon/pmbus/ucd9000.c
View File

@ -74,7 +74,7 @@ static int ucd9000_read_byte_data(struct i2c_client *client, int page, int reg)
switch (reg) {
case PMBUS_FAN_CONFIG_12:
if (page)
if (page > 0)
return -ENXIO;
ret = ucd9000_get_fan_config(client, 0);
@ -88,7 +88,7 @@ static int ucd9000_read_byte_data(struct i2c_client *client, int page, int reg)
ret = fan_config;
break;
case PMBUS_FAN_CONFIG_34:
if (page)
if (page > 0)
return -ENXIO;
ret = ucd9000_get_fan_config(client, 2);