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[as5822-54x] Fix PSU un-recognized issue

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This commit is contained in:
Brandon Chuang
2017-12-12 11:40:07 +08:00
parent 558bc2fe60
commit 446d38ac8c
1 changed files with 51 additions and 2 deletions
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53
packages/platforms/accton/x86-64/x86-64-accton-as5822-54x/modules/builds/x86-64-accton-as5822-54x-psu.c
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@@ -224,6 +224,55 @@ static struct i2c_driver as5822_54x_psu_driver = {
.address_list = normal_i2c,
};
static int as5822_54x_psu_read_byte(struct i2c_client *client, u8 command, u8 *data)
{
int status = 0;
int retry_count = 5;
while (retry_count) {
status = i2c_smbus_read_byte_data(client, command);
if (unlikely(status < 0)) {
msleep(10);
retry_count--;
continue;
}
break;
}
if (unlikely(status < 0)) {
dev_dbg(&client->dev, "sfp read byte data failed, command(0x%2x), data(0x%2x)\r\n", command, status);
goto abort;
}
*data = (u8)status;
abort:
return status;
}
static int as5822_54x_psu_read_bytes(struct i2c_client *client, u8 command, u8 *data,
int data_len)
{
int ret = 0;
while (data_len) {
ssize_t status;
status = as5822_54x_psu_read_byte(client, command, data);
if (status <= 0) {
ret = status;
break;
}
data += 1;
command += 1;
data_len -= 1;
}
return ret;
}
static int as5822_54x_psu_read_block(struct i2c_client *client, u8 command, u8 *data,
int data_len)
{
@@ -284,7 +333,7 @@ static struct as5822_54x_psu_data *as5822_54x_psu_update_device(struct device *d
if (IS_PRESENT(data->index, data->status)) {
/* Read model name */
status = as5822_54x_psu_read_block(client, MODEL_NAME_REG_OFFSET, data->model_name,
status = as5822_54x_psu_read_bytes(client, MODEL_NAME_REG_OFFSET, data->model_name,
ARRAY_SIZE(data->model_name)-1);
if (status < 0) {
@@ -300,7 +349,7 @@ static struct as5822_54x_psu_data *as5822_54x_psu_update_device(struct device *d
}
/* Read serial number */
status = as5822_54x_psu_read_block(client, SERIAL_NUM_REG_OFFSET, data->serial,
status = as5822_54x_psu_read_bytes(client, SERIAL_NUM_REG_OFFSET, data->serial,
ARRAY_SIZE(data->serial)-1);
if (status < 0) {