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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>
This commit is contained in:
Bongsu Jeon 2020-12-02 20:47:39 +09:00 committed by Jakub Kicinski
parent 36d076201b
commit 337da14995
1 changed files with 3 additions and 3 deletions
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6
drivers/nfc/s3fwrn5/i2c.c
View File

@ -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;