[U-Boot] [PATCH 1/2] omap: Don't use gpio_free to change direction to input

[Joe Hershberger]

gpio_free() should not have the side effect of setting the line to input since this prevents the gpio command from being able to set a line as output.

Signed-off-by: Joe Hershberger <joe.hershberger at ni.com>
Cc: Joe Hershberger <joe.hershberger at gmail.com>
Cc: Sandeep Paulraj <s-paulraj at ti.com>
---
 arch/arm/cpu/armv7/omap-common/gpio.c |    7 -------
 board/logicpd/zoom2/debug_board.c     |    1 -
 board/logicpd/zoom2/zoom2.c           |    1 -
 board/overo/overo.c                   |    7 +------
 board/ti/beagle/beagle.c              |    6 ------
 5 files changed, 1 insertions(+), 21 deletions(-)

diff --git a/arch/arm/cpu/armv7/omap-common/gpio.c b/arch/arm/cpu/armv7/omap-common/gpio.c
index e62c6f4..75a02da 100644
--- a/arch/arm/cpu/armv7/omap-common/gpio.c
+++ b/arch/arm/cpu/armv7/omap-common/gpio.c
@@ -237,11 +237,4 @@ int gpio_request(int gpio, const char *label)
  */
 void gpio_free(unsigned gpio)
 {
-	const struct gpio_bank *bank;
-
-	if (check_gpio(gpio) < 0)
-		return;
-	bank = get_gpio_bank(gpio);
-
-	_set_gpio_direction(bank, get_gpio_index(gpio), 1);
 }
diff --git a/board/logicpd/zoom2/debug_board.c b/board/logicpd/zoom2/debug_board.c
index 33aa600..071e7f9 100644
--- a/board/logicpd/zoom2/debug_board.c
+++ b/board/logicpd/zoom2/debug_board.c
@@ -40,7 +40,6 @@ static void zoom2_debug_board_detect (void)
 		 */
 		gpio_direction_input(158);
 		val = gpio_get_value(158);
-		gpio_free(158);
 	}
 
 	if (!val)
diff --git a/board/logicpd/zoom2/zoom2.c b/board/logicpd/zoom2/zoom2.c
index 21964c2..be3083d 100644
--- a/board/logicpd/zoom2/zoom2.c
+++ b/board/logicpd/zoom2/zoom2.c
@@ -95,7 +95,6 @@ void zoom2_identify(void)
 
 		gpio_direction_input(94);
 		val = gpio_get_value(94);
-		gpio_free(94);
 
 		if (val)
 			revision = ZOOM2_REVISION_BETA;
diff --git a/board/overo/overo.c b/board/overo/overo.c
index 850dfee..bdbd7f3 100644
--- a/board/overo/overo.c
+++ b/board/overo/overo.c
@@ -118,10 +118,6 @@ int get_board_revision(void)
 		revision = gpio_get_value(115) << 2 |
 			   gpio_get_value(113) << 1 |
 			   gpio_get_value(112);
-
-		gpio_free(112);
-		gpio_free(113);
-		gpio_free(115);
 	} else {
 		printf("Error: unable to acquire board revision GPIOs\n");
 		revision = -1;
@@ -153,8 +149,7 @@ int get_sdio2_config(void)
 				sdio_direct = 0;
 		}
 
-		gpio_free(130);
-		gpio_free(139);
+		gpio_direction_input(130);
 	} else {
 		printf("Error: unable to acquire sdio2 clk GPIOs\n");
 		sdio_direct = -1;
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index aa5047c..9482c5e 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -127,10 +127,6 @@ int get_board_revision(void)
 		revision = gpio_get_value(173) << 2 |
 			   gpio_get_value(172) << 1 |
 			   gpio_get_value(171);
-
-		gpio_free(171);
-		gpio_free(172);
-		gpio_free(173);
 	} else {
 		printf("Error: unable to acquire board revision GPIOs\n");
 		revision = -1;
@@ -522,8 +518,6 @@ int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		printf("NOT pressed.\n");
 	}
 
-	gpio_free(gpio);
-
 	return !button;
 }
 
-- 
1.6.0.2