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https://github.com/edk2-porting/linux-next.git
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0b84b5ca43
This patch replaces some legacy OMAP GPIO calls with the "new" (not really, any more!) calls that work on most platforms. The calls addressed by this patch are the simple ones to get and set values ... for code that's in mainline, including the implementations of those calls. Except for the declarations and definitions of those calls, all of these changes were performed by a simple SED script. Plus, a few "if() set() else set()" branches were merged by hand. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
116 lines
2.0 KiB
C
116 lines
2.0 KiB
C
/*
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* linux/arch/arm/mach-omap1/leds-osk.c
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*
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* LED driver for OSK with optional Mistral QVGA board
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*/
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#include <linux/init.h>
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#include <mach/hardware.h>
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#include <asm/leds.h>
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#include <asm/system.h>
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#include <mach/gpio.h>
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#include "leds.h"
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#define LED_STATE_ENABLED (1 << 0)
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#define LED_STATE_CLAIMED (1 << 1)
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static u8 led_state;
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#define TIMER_LED (1 << 3) /* Mistral board */
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#define IDLE_LED (1 << 4) /* Mistral board */
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static u8 hw_led_state;
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#ifdef CONFIG_OMAP_OSK_MISTRAL
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/* For now, all system indicators require the Mistral board, since that
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* LED can be manipulated without a task context. This LED is either red,
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* or green, but not both; it can't give the full "disco led" effect.
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*/
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#define GPIO_LED_RED 3
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#define GPIO_LED_GREEN OMAP_MPUIO(4)
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static void mistral_setled(void)
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{
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int red = 0;
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int green = 0;
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if (hw_led_state & TIMER_LED)
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red = 1;
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else if (hw_led_state & IDLE_LED)
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green = 1;
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/* else both sides are disabled */
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gpio_set_value(GPIO_LED_GREEN, green);
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gpio_set_value(GPIO_LED_RED, red);
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}
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#endif
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void osk_leds_event(led_event_t evt)
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{
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unsigned long flags;
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u16 leds;
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local_irq_save(flags);
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if (!(led_state & LED_STATE_ENABLED) && evt != led_start)
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goto done;
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leds = hw_led_state;
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switch (evt) {
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case led_start:
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led_state |= LED_STATE_ENABLED;
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hw_led_state = 0;
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leds = ~0;
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break;
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case led_halted:
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case led_stop:
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led_state &= ~LED_STATE_ENABLED;
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hw_led_state = 0;
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break;
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case led_claim:
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led_state |= LED_STATE_CLAIMED;
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hw_led_state = 0;
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leds = ~0;
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break;
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case led_release:
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led_state &= ~LED_STATE_CLAIMED;
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hw_led_state = 0;
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break;
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#ifdef CONFIG_OMAP_OSK_MISTRAL
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case led_timer:
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hw_led_state ^= TIMER_LED;
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mistral_setled();
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break;
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case led_idle_start: /* idle == off */
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hw_led_state &= ~IDLE_LED;
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mistral_setled();
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break;
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case led_idle_end:
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hw_led_state |= IDLE_LED;
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mistral_setled();
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break;
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#endif /* CONFIG_OMAP_OSK_MISTRAL */
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default:
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break;
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}
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leds ^= hw_led_state;
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done:
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local_irq_restore(flags);
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}
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