diff options
| author | Bongsu Jeon <bongsu.jeon@samsung.com> | 2020-12-02 14:47:39 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-12-03 04:55:25 +0300 |
| commit | 337da1499586ed452c1db1e4bbd3106bbafddb6f (patch) | |
| tree | e2489625e840e46c1c71a0e81feee8a2d2d4bde9 /drivers/nfc | |
| parent | 36d076201bd467d6bd22ba14e56e457d55e32be7 (diff) | |
| download | linux-337da1499586ed452c1db1e4bbd3106bbafddb6f.tar.xz | |
nfc: s3fwrn5: reduce the EN_WAIT_TIME
The delay of 20ms is enough to enable and
wake up the Samsung's nfc chip.
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Bongsu Jeon <bongsu.jeon@samsung.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/s3fwrn5/i2c.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/nfc/s3fwrn5/i2c.c b/drivers/nfc/s3fwrn5/i2c.c index ae26594c7302..9a64eea13506 100644 --- a/drivers/nfc/s3fwrn5/i2c.c +++ b/drivers/nfc/s3fwrn5/i2c.c @@ -19,7 +19,7 @@ #define S3FWRN5_I2C_DRIVER_NAME "s3fwrn5_i2c" -#define S3FWRN5_EN_WAIT_TIME 150 +#define S3FWRN5_EN_WAIT_TIME 20 struct s3fwrn5_i2c_phy { struct i2c_client *i2c_dev; @@ -40,7 +40,7 @@ static void s3fwrn5_i2c_set_wake(void *phy_id, bool wake) mutex_lock(&phy->mutex); gpio_set_value(phy->gpio_fw_wake, wake); - msleep(S3FWRN5_EN_WAIT_TIME/2); + msleep(S3FWRN5_EN_WAIT_TIME); mutex_unlock(&phy->mutex); } @@ -63,7 +63,7 @@ static void s3fwrn5_i2c_set_mode(void *phy_id, enum s3fwrn5_mode mode) if (mode != S3FWRN5_MODE_COLD) { msleep(S3FWRN5_EN_WAIT_TIME); gpio_set_value(phy->gpio_en, 0); - msleep(S3FWRN5_EN_WAIT_TIME/2); + msleep(S3FWRN5_EN_WAIT_TIME); } phy->irq_skip = true; |