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ARM: OMAP: switch to gpio_direction_output

Sfoglia il codice sorgente 
More conversion to the standard GPIO interfaces:  stop using
omap_set_gpio_direction() entirely, and switch over to the
gpio_direction_output() call.

Note that because gpio_direction_output() includes the initial
value, this change isn't quite transparent.

 - For the call sites which defined an initial value either
   before or after setting the direction, that value was used.

   When that value was previously assigned afterwards, this
   could eliminate a brief output glitch ... and possibly
   change behavior.  In a few cases (LCDs) several values
   were assigned together ... those were re-arranged to match
   the explicit sequence provided.

 - Some call sites didn't define such a value; so I chose an
   initial "off/reset" value that seemed to default to "off".

In short, files touched by this patch might notice some small
changes in startup behavior (with trivial fixes).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
David Brownell
2008-12-10 17:35:26 -08:00
committato da Tony Lindgren
parent 40e3925ba1
commit e918edf7c2
8 ha cambiato i file con 11 aggiunte e 36 eliminazioni
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9
arch/arm/mach-omap1/board-voiceblue.c
Vedi File

@@ -171,8 +171,7 @@ static void __init voiceblue_init(void)
omap_request_gpio(0);
/* smc91x reset */
omap_request_gpio(7);
omap_set_gpio_direction(7, 0);
gpio_set_value(7, 1);
gpio_direction_output(7, 1);
udelay(2); /* wait at least 100ns */
gpio_set_value(7, 0);
mdelay(50); /* 50ms until PHY ready */
@@ -180,8 +179,7 @@ static void __init voiceblue_init(void)
omap_request_gpio(8);
/* 16C554 reset*/
omap_request_gpio(6);
omap_set_gpio_direction(6, 0);
gpio_set_value(6, 0);
gpio_direction_output(6, 0);
/* 16C554 interrupt pins */
omap_request_gpio(12);
omap_request_gpio(13);
@@ -244,8 +242,7 @@ static int wdt_gpio_state;
void voiceblue_wdt_enable(void)
{
omap_set_gpio_direction(0, 0);
gpio_set_value(0, 0);
gpio_direction_output(0, 0);
gpio_set_value(0, 1);
gpio_set_value(0, 0);
wdt_gpio_state = 0;