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authorBongsu Jeon <bongsu.jeon@samsung.com>2020-12-02 14:47:39 +0300
committerJakub Kicinski <kuba@kernel.org>2020-12-03 04:55:25 +0300
commit337da1499586ed452c1db1e4bbd3106bbafddb6f (patch)
treee2489625e840e46c1c71a0e81feee8a2d2d4bde9 /drivers/nfc
parent36d076201bd467d6bd22ba14e56e457d55e32be7 (diff)
downloadlinux-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.c6
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;