mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-18 06:50:08 +00:00
ARM: OMAP: Use gpiolib with tps65010 for OSK 5912
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
Tony Lindgren
parent
79966fd9b4
commit
d94577d5a5
@ -32,6 +32,7 @@
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/leds.h>
|
||||
|
||||
#include <linux/mtd/mtd.h>
|
||||
#include <linux/mtd/partitions.h>
|
||||
@ -183,11 +184,80 @@ static struct platform_device *osk5912_devices[] __initdata = {
|
||||
&osk5912_mcbsp1_device,
|
||||
};
|
||||
|
||||
static struct gpio_led tps_leds[] = {
|
||||
/* NOTE: D9 and D2 have hardware blink support.
|
||||
* Also, D9 requires non-battery power.
|
||||
*/
|
||||
{ .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9", },
|
||||
{ .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
|
||||
{ .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
|
||||
.default_trigger = "heartbeat", },
|
||||
};
|
||||
|
||||
static struct gpio_led_platform_data tps_leds_data = {
|
||||
.num_leds = 3,
|
||||
.leds = tps_leds,
|
||||
};
|
||||
|
||||
static struct platform_device osk5912_tps_leds = {
|
||||
.name = "leds-gpio",
|
||||
.id = 0,
|
||||
.dev.platform_data = &tps_leds_data,
|
||||
};
|
||||
|
||||
static int osk_tps_setup(struct i2c_client *client, void *context)
|
||||
{
|
||||
/* Set GPIO 1 HIGH to disable VBUS power supply;
|
||||
* OHCI driver powers it up/down as needed.
|
||||
*/
|
||||
gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
|
||||
gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
|
||||
|
||||
/* Set GPIO 2 high so LED D3 is off by default */
|
||||
tps65010_set_gpio_out_value(GPIO2, HIGH);
|
||||
|
||||
/* Set GPIO 3 low to take ethernet out of reset */
|
||||
gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
|
||||
gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
|
||||
|
||||
/* GPIO4 is VDD_DSP */
|
||||
gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
|
||||
gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
|
||||
/* REVISIT if DSP support isn't configured, power it off ... */
|
||||
|
||||
/* Let LED1 (D9) blink; leds-gpio may override it */
|
||||
tps65010_set_led(LED1, BLINK);
|
||||
|
||||
/* Set LED2 off by default */
|
||||
tps65010_set_led(LED2, OFF);
|
||||
|
||||
/* Enable LOW_PWR handshake */
|
||||
tps65010_set_low_pwr(ON);
|
||||
|
||||
/* Switch VLDO2 to 3.0V for AIC23 */
|
||||
tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
|
||||
| TPS_LDO1_ENABLE);
|
||||
|
||||
/* register these three LEDs */
|
||||
osk5912_tps_leds.dev.parent = &client->dev;
|
||||
platform_device_register(&osk5912_tps_leds);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct tps65010_board tps_board = {
|
||||
.base = OSK_TPS_GPIO_BASE,
|
||||
.outmask = 0x0f,
|
||||
.setup = osk_tps_setup,
|
||||
};
|
||||
|
||||
static struct i2c_board_info __initdata osk_i2c_board_info[] = {
|
||||
{
|
||||
I2C_BOARD_INFO("tps65010", 0x48),
|
||||
.type = "tps65010",
|
||||
.irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1)),
|
||||
.platform_data = &tps_board,
|
||||
|
||||
},
|
||||
/* TODO when driver support is ready:
|
||||
* - aic23 audio chip at 0x1a
|
||||
@ -488,44 +558,6 @@ static void __init osk_map_io(void)
|
||||
omap1_map_common_io();
|
||||
}
|
||||
|
||||
#ifdef CONFIG_TPS65010
|
||||
static int __init osk_tps_init(void)
|
||||
{
|
||||
if (!machine_is_omap_osk())
|
||||
return 0;
|
||||
|
||||
/* Let LED1 (D9) blink */
|
||||
tps65010_set_led(LED1, BLINK);
|
||||
|
||||
/* Disable LED 2 (D2) */
|
||||
tps65010_set_led(LED2, OFF);
|
||||
|
||||
/* Set GPIO 1 HIGH to disable VBUS power supply;
|
||||
* OHCI driver powers it up/down as needed.
|
||||
*/
|
||||
tps65010_set_gpio_out_value(GPIO1, HIGH);
|
||||
|
||||
/* Set GPIO 2 low to turn on LED D3 */
|
||||
tps65010_set_gpio_out_value(GPIO2, HIGH);
|
||||
|
||||
/* Set GPIO 3 low to take ethernet out of reset */
|
||||
tps65010_set_gpio_out_value(GPIO3, LOW);
|
||||
|
||||
/* gpio4 for VDD_DSP */
|
||||
/* FIXME send power to DSP iff it's configured */
|
||||
|
||||
/* Enable LOW_PWR */
|
||||
tps65010_set_low_pwr(ON);
|
||||
|
||||
/* Switch VLDO2 to 3.0V for AIC23 */
|
||||
tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
|
||||
| TPS_LDO1_ENABLE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
fs_initcall(osk_tps_init);
|
||||
#endif
|
||||
|
||||
MACHINE_START(OMAP_OSK, "TI-OSK")
|
||||
/* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
|
||||
.phys_io = 0xfff00000,
|
||||
|
||||
@ -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);
|
||||
|
||||
@ -32,5 +32,16 @@
|
||||
/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
|
||||
#define OMAP_OSK_ETHR_START 0x04800300
|
||||
|
||||
/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with
|
||||
* alternate pin configurations for hardware-controlled blinking.
|
||||
*/
|
||||
#define OSK_TPS_GPIO_BASE (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)
|
||||
# define OSK_TPS_GPIO_USB_PWR_EN (OSK_TPS_GPIO_BASE + 0)
|
||||
# define OSK_TPS_GPIO_LED_D3 (OSK_TPS_GPIO_BASE + 1)
|
||||
# define OSK_TPS_GPIO_LAN_RESET (OSK_TPS_GPIO_BASE + 2)
|
||||
# define OSK_TPS_GPIO_DSP_PWR_EN (OSK_TPS_GPIO_BASE + 3)
|
||||
# define OSK_TPS_GPIO_LED_D9 (OSK_TPS_GPIO_BASE + 4)
|
||||
# define OSK_TPS_GPIO_LED_D2 (OSK_TPS_GPIO_BASE + 5)
|
||||
|
||||
#endif /* __ASM_ARCH_OMAP_OSK_H */
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user