xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: OMAP: Use gpiolib with tps65010 for OSK 5912

Browse Source 
Convert OSK board to use new tps65010 gpiolib support.  This
includes moving its LED support from leds-osk to gpio-leds,
giving more trigger options and a net platform code shrink.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
David Brownell
2008-02-28 22:09:15 -08:00
committed by Tony Lindgren
parent 79966fd9b4
commit d94577d5a5
3 changed files with 82 additions and 117 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
arch/arm/mach-omap1/leds-osk.c
View File

@@ -1,11 +1,9 @@
/*
* linux/arch/arm/mach-omap1/leds-osk.c
*
* LED driver for OSK, and optionally Mistral QVGA, boards
* LED driver for OSK with optional Mistral QVGA board
*/
#include <linux/init.h>
#include <linux/workqueue.h>
#include <linux/i2c/tps65010.h>
#include <asm/hardware.h>
#include <asm/leds.h>
@@ -20,49 +18,11 @@
#define LED_STATE_CLAIMED (1 << 1)
static u8 led_state;
#define GREEN_LED (1 << 0) /* TPS65010 LED1 */
#define AMBER_LED (1 << 1) /* TPS65010 LED2 */
#define RED_LED (1 << 2) /* TPS65010 GPIO2 */
#define TIMER_LED (1 << 3) /* Mistral board */
#define IDLE_LED (1 << 4) /* Mistral board */
static u8 hw_led_state;
/* TPS65010 leds are changed using i2c -- from a task context.
* Using one of these for the "idle" LED would be impractical...
*/
#define TPS_LEDS (GREEN_LED | RED_LED | AMBER_LED)
static u8 tps_leds_change;
static void tps_work(struct work_struct *unused)
{
for (;;) {
u8 leds;
local_irq_disable();
leds = tps_leds_change;
tps_leds_change = 0;
local_irq_enable();
if (!leds)
break;
/* careful: the set_led() value is on/off/blink */
if (leds & GREEN_LED)
tps65010_set_led(LED1, !!(hw_led_state & GREEN_LED));
if (leds & AMBER_LED)
tps65010_set_led(LED2, !!(hw_led_state & AMBER_LED));
/* the gpio led doesn't have that issue */
if (leds & RED_LED)
tps65010_set_gpio_out_value(GPIO2,
!(hw_led_state & RED_LED));
}
}
static DECLARE_WORK(work, tps_work);
#ifdef CONFIG_OMAP_OSK_MISTRAL
/* For now, all system indicators require the Mistral board, since that
@@ -112,7 +72,6 @@ void osk_leds_event(led_event_t evt)
case led_stop:
led_state &= ~LED_STATE_ENABLED;
hw_led_state = 0;
/* NOTE: work may still be pending!! */
break;
case led_claim:
@@ -145,48 +104,11 @@ void osk_leds_event(led_event_t evt)
#endif /* CONFIG_OMAP_OSK_MISTRAL */
/* "green" == tps LED1 (leftmost, normally power-good)
* works only with DC adapter, not on battery power!
*/
case led_green_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= GREEN_LED;
break;
case led_green_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~GREEN_LED;
break;
/* "amber" == tps LED2 (middle) */
case led_amber_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= AMBER_LED;
break;
case led_amber_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~AMBER_LED;
break;
/* "red" == LED on tps gpio3 (rightmost) */
case led_red_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= RED_LED;
break;
case led_red_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~RED_LED;
break;
default:
break;
}
leds ^= hw_led_state;
leds &= TPS_LEDS;
if (leds && (led_state & LED_STATE_CLAIMED)) {
tps_leds_change |= leds;
schedule_work(&work);
}
done:
local_irq_restore(flags);