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e918edf7c2
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>
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
/*
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* linux/arch/arm/mach-omap1/leds.c
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*
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* OMAP LEDs dispatcher
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <asm/leds.h>
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#include <asm/mach-types.h>
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#include <mach/gpio.h>
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#include <mach/mux.h>
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#include "leds.h"
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static int __init
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omap_leds_init(void)
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{
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if (machine_is_omap_innovator())
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leds_event = innovator_leds_event;
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else if (machine_is_omap_h2()
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|| machine_is_omap_h3()
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|| machine_is_omap_perseus2())
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leds_event = h2p2_dbg_leds_event;
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else if (machine_is_omap_osk())
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leds_event = osk_leds_event;
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else
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return -1;
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if (machine_is_omap_h2()
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|| machine_is_omap_h3()
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#ifdef CONFIG_OMAP_OSK_MISTRAL
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|| machine_is_omap_osk()
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#endif
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) {
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/* LED1/LED2 pins can be used as GPIO (as done here), or by
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* the LPG (works even in deep sleep!), to drive a bicolor
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* LED on the H2 sample board, and another on the H2/P2
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* "surfer" expansion board.
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*
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* The same pins drive a LED on the OSK Mistral board, but
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* that's a different kind of LED (just one color at a time).
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*/
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omap_cfg_reg(P18_1610_GPIO3);
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if (omap_request_gpio(3) == 0)
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gpio_direction_output(3, 1);
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else
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printk(KERN_WARNING "LED: can't get GPIO3/red?\n");
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omap_cfg_reg(MPUIO4);
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if (omap_request_gpio(OMAP_MPUIO(4)) == 0)
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gpio_direction_output(OMAP_MPUIO(4), 1);
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else
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printk(KERN_WARNING "LED: can't get MPUIO4/green?\n");
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}
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leds_event(led_start);
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return 0;
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}
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__initcall(omap_leds_init);
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