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authorSven Wegener <sven.wegener@stealer.net>2021-06-12 21:56:21 +0200
committerDaniel Golle <daniel@makrotopia.org>2022-09-11 20:26:41 +0100
commit7c852e7df50e370b26b060c96c3cc4491cee88eb (patch)
treefeadd28a4654da0f3c19855d78c524ef6b5430b3 /target/linux/mediatek/files/drivers
parente9a22ce2535c4a0faf83d5595304fe0e2c7bd1b2 (diff)
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mediatek: support reading more than one byte of response
There are commands that return more than one byte of response. Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Diffstat (limited to 'target/linux/mediatek/files/drivers')
-rw-r--r--target/linux/mediatek/files/drivers/leds/leds-ubnt-ledbar.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/target/linux/mediatek/files/drivers/leds/leds-ubnt-ledbar.c b/target/linux/mediatek/files/drivers/leds/leds-ubnt-ledbar.c
index 8168391d7e..c62e233e6d 100644
--- a/target/linux/mediatek/files/drivers/leds/leds-ubnt-ledbar.c
+++ b/target/linux/mediatek/files/drivers/leds/leds-ubnt-ledbar.c
@@ -41,16 +41,17 @@ struct ubnt_ledbar {
struct gpio_desc *enable_gpio;
};
-static int ubnt_ledbar_perform_transaction(struct ubnt_ledbar *ledbar,
- char *transaction)
+static void ubnt_ledbar_perform_transaction(struct ubnt_ledbar *ledbar,
+ const char *transaction, int len,
+ char *result, int result_len)
{
- int ret;
int i;
- for (i = 0; i < UBNT_LEDBAR_TRANSACTION_LENGTH; i++)
+ for (i = 0; i < len; i++)
i2c_smbus_write_byte(ledbar->client, transaction[i]);
- return i2c_smbus_read_byte(ledbar->client);
+ for (i = 0; i < result_len; i++)
+ result[i] = i2c_smbus_read_byte(ledbar->client);
}
static int ubnt_ledbar_apply_state(struct ubnt_ledbar *ledbar)
@@ -72,14 +73,14 @@ static int ubnt_ledbar_apply_state(struct ubnt_ledbar *ledbar)
msleep(10);
- i2c_response = ubnt_ledbar_perform_transaction(ledbar, setup_msg);
+ ubnt_ledbar_perform_transaction(ledbar, setup_msg, sizeof(setup_msg), &i2c_response, sizeof(i2c_response));
if (i2c_response != UBNT_LEDBAR_TRANSACTION_SUCCESS) {
dev_err(&ledbar->client->dev, "Error initializing LED transaction: %02hhx\n", i2c_response);
ret = -EINVAL;
goto out_gpio;
}
- i2c_response = ubnt_ledbar_perform_transaction(ledbar, led_msg);
+ ubnt_ledbar_perform_transaction(ledbar, led_msg, sizeof(led_msg), &i2c_response, sizeof(i2c_response));
if (i2c_response != UBNT_LEDBAR_TRANSACTION_SUCCESS) {
dev_err(&ledbar->client->dev, "Failed LED transaction: %02hhx\n", i2c_response);
ret = -EINVAL;