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From: Axel Lin <axel.lin@ingics.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] dm: i2c-gpio: Remove redundant dm_gpio_set_value() call
Date: Sun, 26 Apr 2015 11:05:38 +0800	[thread overview]
Message-ID: <1430017538.18893.1.camel@ingics.com> (raw)

dm_gpio_set_dir_flags() will also set gpio output value when switching to
gpio output. So it's not necessary to call dm_gpio_set_value() after
dm_gpio_set_dir_flags() call.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 drivers/i2c/i2c-gpio.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/i2c/i2c-gpio.c b/drivers/i2c/i2c-gpio.c
index ed899d4..a8b83c5 100644
--- a/drivers/i2c/i2c-gpio.c
+++ b/drivers/i2c/i2c-gpio.c
@@ -41,18 +41,19 @@ static int i2c_gpio_sda_get(struct gpio_desc *sda)
 
 static void i2c_gpio_sda_set(struct gpio_desc *sda, int bit)
 {
-	if (bit) {
+	if (bit)
 		dm_gpio_set_dir_flags(sda, GPIOD_IS_IN);
-	} else {
+	else
 		dm_gpio_set_dir_flags(sda, GPIOD_IS_OUT);
-		dm_gpio_set_value(sda, 0);
-	}
 }
 
 static void i2c_gpio_scl_set(struct gpio_desc *scl, int bit)
 {
-	dm_gpio_set_dir_flags(scl, GPIOD_IS_OUT);
-	dm_gpio_set_value(scl, bit);
+	ulong flags = GPIOD_IS_OUT;
+
+	if (bit)
+		flags |= GPIOD_IS_OUT_ACTIVE;
+	dm_gpio_set_dir_flags(scl, flags);
 }
 
 static void i2c_gpio_write_bit(struct gpio_desc *scl, struct gpio_desc *sda,
-- 
2.1.0

             reply	other threads:[~2015-04-26  3:05 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-26  3:05 Axel Lin [this message]
2015-04-28  3:20 ` [U-Boot] [PATCH] dm: i2c-gpio: Remove redundant dm_gpio_set_value() call Simon Glass
2015-05-05  3:16   ` Simon Glass

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