forked from luck/tmp_suning_uos_patched
145 lines
2.9 KiB
C
145 lines
2.9 KiB
C
|
/*
|
||
|
* linux/arch/arm/mach-omap/leds-h2p2-debug.c
|
||
|
*
|
||
|
* Copyright 2003 by Texas Instruments Incorporated
|
||
|
*
|
||
|
* There are 16 LEDs on the debug board (all green); four may be used
|
||
|
* for logical 'green', 'amber', 'red', and 'blue' (after "claiming").
|
||
|
*
|
||
|
* The "surfer" expansion board and H2 sample board also have two-color
|
||
|
* green+red LEDs (in parallel), used here for timer and idle indicators.
|
||
|
*/
|
||
|
#include <linux/config.h>
|
||
|
#include <linux/init.h>
|
||
|
#include <linux/kernel_stat.h>
|
||
|
#include <linux/sched.h>
|
||
|
#include <linux/version.h>
|
||
|
|
||
|
#include <asm/io.h>
|
||
|
#include <asm/hardware.h>
|
||
|
#include <asm/leds.h>
|
||
|
#include <asm/system.h>
|
||
|
|
||
|
#include <asm/arch/fpga.h>
|
||
|
#include <asm/arch/gpio.h>
|
||
|
|
||
|
#include "leds.h"
|
||
|
|
||
|
|
||
|
#define GPIO_LED_RED 3
|
||
|
#define GPIO_LED_GREEN OMAP_MPUIO(4)
|
||
|
|
||
|
|
||
|
#define LED_STATE_ENABLED 0x01
|
||
|
#define LED_STATE_CLAIMED 0x02
|
||
|
#define LED_TIMER_ON 0x04
|
||
|
|
||
|
#define GPIO_IDLE GPIO_LED_GREEN
|
||
|
#define GPIO_TIMER GPIO_LED_RED
|
||
|
|
||
|
|
||
|
void h2p2_dbg_leds_event(led_event_t evt)
|
||
|
{
|
||
|
unsigned long flags;
|
||
|
|
||
|
static struct h2p2_dbg_fpga __iomem *fpga;
|
||
|
static u16 led_state, hw_led_state;
|
||
|
|
||
|
local_irq_save(flags);
|
||
|
|
||
|
if (!(led_state & LED_STATE_ENABLED) && evt != led_start)
|
||
|
goto done;
|
||
|
|
||
|
switch (evt) {
|
||
|
case led_start:
|
||
|
if (!fpga)
|
||
|
fpga = ioremap(H2P2_DBG_FPGA_START,
|
||
|
H2P2_DBG_FPGA_SIZE);
|
||
|
if (fpga) {
|
||
|
led_state |= LED_STATE_ENABLED;
|
||
|
__raw_writew(~0, &fpga->leds);
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case led_stop:
|
||
|
case led_halted:
|
||
|
/* all leds off during suspend or shutdown */
|
||
|
omap_set_gpio_dataout(GPIO_TIMER, 0);
|
||
|
omap_set_gpio_dataout(GPIO_IDLE, 0);
|
||
|
__raw_writew(~0, &fpga->leds);
|
||
|
led_state &= ~LED_STATE_ENABLED;
|
||
|
if (evt == led_halted) {
|
||
|
iounmap(fpga);
|
||
|
fpga = NULL;
|
||
|
}
|
||
|
goto done;
|
||
|
|
||
|
case led_claim:
|
||
|
led_state |= LED_STATE_CLAIMED;
|
||
|
hw_led_state = 0;
|
||
|
break;
|
||
|
|
||
|
case led_release:
|
||
|
led_state &= ~LED_STATE_CLAIMED;
|
||
|
break;
|
||
|
|
||
|
#ifdef CONFIG_LEDS_TIMER
|
||
|
case led_timer:
|
||
|
led_state ^= LED_TIMER_ON;
|
||
|
omap_set_gpio_dataout(GPIO_TIMER, led_state & LED_TIMER_ON);
|
||
|
goto done;
|
||
|
#endif
|
||
|
|
||
|
#ifdef CONFIG_LEDS_CPU
|
||
|
case led_idle_start:
|
||
|
omap_set_gpio_dataout(GPIO_IDLE, 1);
|
||
|
goto done;
|
||
|
|
||
|
case led_idle_end:
|
||
|
omap_set_gpio_dataout(GPIO_IDLE, 0);
|
||
|
goto done;
|
||
|
#endif
|
||
|
|
||
|
case led_green_on:
|
||
|
hw_led_state |= H2P2_DBG_FPGA_LED_GREEN;
|
||
|
break;
|
||
|
case led_green_off:
|
||
|
hw_led_state &= ~H2P2_DBG_FPGA_LED_GREEN;
|
||
|
break;
|
||
|
|
||
|
case led_amber_on:
|
||
|
hw_led_state |= H2P2_DBG_FPGA_LED_AMBER;
|
||
|
break;
|
||
|
case led_amber_off:
|
||
|
hw_led_state &= ~H2P2_DBG_FPGA_LED_AMBER;
|
||
|
break;
|
||
|
|
||
|
case led_red_on:
|
||
|
hw_led_state |= H2P2_DBG_FPGA_LED_RED;
|
||
|
break;
|
||
|
case led_red_off:
|
||
|
hw_led_state &= ~H2P2_DBG_FPGA_LED_RED;
|
||
|
break;
|
||
|
|
||
|
case led_blue_on:
|
||
|
hw_led_state |= H2P2_DBG_FPGA_LED_BLUE;
|
||
|
break;
|
||
|
case led_blue_off:
|
||
|
hw_led_state &= ~H2P2_DBG_FPGA_LED_BLUE;
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
|
||
|
/*
|
||
|
* Actually burn the LEDs
|
||
|
*/
|
||
|
if (led_state & LED_STATE_CLAIMED)
|
||
|
__raw_writew(~hw_led_state, &fpga->leds);
|
||
|
|
||
|
done:
|
||
|
local_irq_restore(flags);
|
||
|
}
|