a683b14df8
two reasons: 1. GPIO namings and their mode definitions are conceptually not part of the PXA register definitions 2. this is actually a temporary move in the transition of PXA2xx to use MFP-alike APIs (as what PXA3xx is now doing), so that legacy code will still work and new code can be added in step by step Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
134 lines
2.6 KiB
C
134 lines
2.6 KiB
C
/*
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* linux/arch/arm/mach-pxa/leds-trizeps4.c
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*
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* Author: Jürgen Schindele
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* Created: 20 02, 2006
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* Copyright: Jürgen Schindele
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <asm/hardware.h>
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#include <asm/system.h>
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#include <asm/types.h>
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#include <asm/leds.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/arch/pxa2xx-gpio.h>
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#include <asm/arch/trizeps4.h>
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#include "leds.h"
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#define LED_STATE_ENABLED 1
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#define LED_STATE_CLAIMED 2
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#define SYS_BUSY 0x01
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#define HEARTBEAT 0x02
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#define BLINK 0x04
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static unsigned int led_state;
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static unsigned int hw_led_state;
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void trizeps4_leds_event(led_event_t evt)
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{
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unsigned long flags;
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local_irq_save(flags);
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switch (evt) {
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case led_start:
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hw_led_state = 0;
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pxa_gpio_mode( GPIO_SYS_BUSY_LED | GPIO_OUT); /* LED1 */
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pxa_gpio_mode( GPIO_HEARTBEAT_LED | GPIO_OUT); /* LED2 */
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led_state = LED_STATE_ENABLED;
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break;
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case led_stop:
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led_state &= ~LED_STATE_ENABLED;
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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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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_LEDS_TIMER
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case led_timer:
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hw_led_state ^= HEARTBEAT;
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break;
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#endif
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#ifdef CONFIG_LEDS_CPU
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case led_idle_start:
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hw_led_state &= ~SYS_BUSY;
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break;
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case led_idle_end:
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hw_led_state |= SYS_BUSY;
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break;
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#endif
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case led_halted:
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break;
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case led_green_on:
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hw_led_state |= BLINK;
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break;
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case led_green_off:
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hw_led_state &= ~BLINK;
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break;
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case led_amber_on:
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break;
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case led_amber_off:
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break;
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case led_red_on:
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break;
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case led_red_off:
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break;
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default:
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break;
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}
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if (led_state & LED_STATE_ENABLED) {
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switch (hw_led_state) {
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case 0:
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GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
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GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
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break;
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case 1:
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GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
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GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
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break;
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case 2:
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GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
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GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
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break;
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case 3:
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GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
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GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
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break;
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}
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}
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else {
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/* turn all off */
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GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
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GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
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}
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local_irq_restore(flags);
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}
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