diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-gpio.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c index 3312ef981cb7..58abb3eced58 100644 --- a/drivers/i2c/busses/i2c-gpio.c +++ b/drivers/i2c/busses/i2c-gpio.c @@ -39,7 +39,7 @@ static void i2c_gpio_setsda_val(void *data, int state) { struct i2c_gpio_private_data *priv = data; - gpiod_set_value(priv->sda, state); + gpiod_set_value_cansleep(priv->sda, state); } /* @@ -52,21 +52,21 @@ static void i2c_gpio_setscl_val(void *data, int state) { struct i2c_gpio_private_data *priv = data; - gpiod_set_value(priv->scl, state); + gpiod_set_value_cansleep(priv->scl, state); } static int i2c_gpio_getsda(void *data) { struct i2c_gpio_private_data *priv = data; - return gpiod_get_value(priv->sda); + return gpiod_get_value_cansleep(priv->sda); } static int i2c_gpio_getscl(void *data) { struct i2c_gpio_private_data *priv = data; - return gpiod_get_value(priv->scl); + return gpiod_get_value_cansleep(priv->scl); } #ifdef CONFIG_I2C_GPIO_FAULT_INJECTOR @@ -286,6 +286,9 @@ static int i2c_gpio_probe(struct platform_device *pdev) if (IS_ERR(priv->scl)) return PTR_ERR(priv->scl); + if (gpiod_cansleep(priv->sda) || gpiod_cansleep(priv->scl)) + dev_warn(dev, "Slow GPIO pins might wreak havoc into I2C/SMBus bus timing"); + bit_data->setsda = i2c_gpio_setsda_val; bit_data->setscl = i2c_gpio_setscl_val; |