diff options
Diffstat (limited to 'arch/arm/mach-omap1')
| -rw-r--r-- | arch/arm/mach-omap1/leds-h2p2-debug.c | 144 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/leds-innovator.c | 103 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/leds-osk.c | 194 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/leds.c | 61 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/leds.h | 3 |
5 files changed, 505 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/leds-h2p2-debug.c b/arch/arm/mach-omap1/leds-h2p2-debug.c new file mode 100644 index 00000000000..6e98290cca5 --- /dev/null +++ b/arch/arm/mach-omap1/leds-h2p2-debug.c @@ -0,0 +1,144 @@ +/* + * 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); +} diff --git a/arch/arm/mach-omap1/leds-innovator.c b/arch/arm/mach-omap1/leds-innovator.c new file mode 100644 index 00000000000..8043b7d0f66 --- /dev/null +++ b/arch/arm/mach-omap1/leds-innovator.c @@ -0,0 +1,103 @@ +/* + * linux/arch/arm/mach-omap/leds-innovator.c + */ +#include <linux/config.h> +#include <linux/init.h> + +#include <asm/hardware.h> +#include <asm/leds.h> +#include <asm/system.h> + +#include "leds.h" + + +#define LED_STATE_ENABLED 1 +#define LED_STATE_CLAIMED 2 + +static unsigned int led_state; +static unsigned int hw_led_state; + +void innovator_leds_event(led_event_t evt) +{ + unsigned long flags; + + local_irq_save(flags); + + switch (evt) { + case led_start: + hw_led_state = 0; + led_state = LED_STATE_ENABLED; + break; + + case led_stop: + led_state &= ~LED_STATE_ENABLED; + hw_led_state = 0; + break; + + case led_claim: + led_state |= LED_STATE_CLAIMED; + hw_led_state = 0; + break; + + case led_release: + led_state &= ~LED_STATE_CLAIMED; + hw_led_state = 0; + break; + +#ifdef CONFIG_LEDS_TIMER + case led_timer: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state ^= 0; + break; +#endif + +#ifdef CONFIG_LEDS_CPU + case led_idle_start: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state |= 0; + break; + + case led_idle_end: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state &= ~0; + break; +#endif + + case led_halted: + break; + + case led_green_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~0; + break; + + case led_green_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= 0; + break; + + case led_amber_on: + break; + + case led_amber_off: + break; + + case led_red_on: + if (led_state & LED_STATE_CLAIMED) + hw_led_state &= ~0; + break; + + case led_red_off: + if (led_state & LED_STATE_CLAIMED) + hw_led_state |= 0; + break; + + default: + break; + } + + if (led_state & LED_STATE_ENABLED) + ; + + local_irq_restore(flags); +} diff --git a/arch/arm/mach-omap1/leds-osk.c b/arch/arm/mach-omap1/leds-osk.c new file mode 100644 index 00000000000..4a0e8b9d4fc --- /dev/null +++ b/arch/arm/mach-omap1/leds-osk.c @@ -0,0 +1,194 @@ +/* + * linux/arch/arm/mach-omap/leds-osk.c + * + * LED driver for OSK, and optionally Mistral QVGA, boards + */ +#include <linux/config.h> +#include <linux/init.h> +#include <linux/workqueue.h> + +#include <asm/hardware.h> +#include <asm/leds.h> +#include <asm/system.h> + +#include <asm/arch/gpio.h> +#include <asm/arch/tps65010.h> + +#include "leds.h" + + +#define LED_STATE_ENABLED (1 << 0) +#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(void *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, NULL); + +#ifdef CONFIG_FB_OMAP + +/* For now, all system indicators require the Mistral board, since that + * LED can be manipulated without a task context. This LED is either red, + * or green, but not both; it can't give the full "disco led" effect. + */ + +#define GPIO_LED_RED 3 +#define GPIO_LED_GREEN OMAP_MPUIO(4) + +static void mistral_setled(void) +{ + int red = 0; + int green = 0; + + if (hw_led_state & TIMER_LED) + red = 1; + else if (hw_led_state & IDLE_LED) + green = 1; + // else both sides are disabled + + omap_set_gpio_dataout(GPIO_LED_GREEN, green); + omap_set_gpio_dataout(GPIO_LED_RED, red); +} + +#endif + +void osk_leds_event(led_event_t evt) +{ + unsigned long flags; + u16 leds; + + local_irq_save(flags); + + if (!(led_state & LED_STATE_ENABLED) && evt != led_start) + goto done; + + leds = hw_led_state; + switch (evt) { + case led_start: + led_state |= LED_STATE_ENABLED; + hw_led_state = 0; + leds = ~0; + break; + + case led_halted: + case led_stop: + led_state &= ~LED_STATE_ENABLED; + hw_led_state = 0; + // NOTE: work may still be pending!! + break; + + case led_claim: + led_state |= LED_STATE_CLAIMED; + hw_led_state = 0; + leds = ~0; + break; + + case led_release: + led_state &= ~LED_STATE_CLAIMED; + hw_led_state = 0; + break; + +#ifdef CONFIG_FB_OMAP + + case led_timer: + hw_led_state ^= TIMER_LED; + mistral_setled(); + break; + + case led_idle_start: + hw_led_state |= IDLE_LED; + mistral_setled(); + break; + + case led_idle_end: + hw_led_state &= ~IDLE_LED; + mistral_setled(); + break; + +#endif /* CONFIG_FB_OMAP */ + + /* "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); +} diff --git a/arch/arm/mach-omap1/leds.c b/arch/arm/mach-omap1/leds.c new file mode 100644 index 00000000000..8ab21fe98e1 --- /dev/null +++ b/arch/arm/mach-omap1/leds.c @@ -0,0 +1,61 @@ +/* + * linux/arch/arm/mach-omap/leds.c + * + * OMAP LEDs dispatcher + */ +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/leds.h> +#include <asm/mach-types.h> + +#include <asm/arch/gpio.h> +#include <asm/arch/mux.h> + +#include "leds.h" + +static int __init +omap_leds_init(void) +{ + if (machine_is_omap_innovator()) + leds_event = innovator_leds_event; + + else if (machine_is_omap_h2() || machine_is_omap_perseus2()) + leds_event = h2p2_dbg_leds_event; + + else if (machine_is_omap_osk()) + leds_event = osk_leds_event; + + else + return -1; + + if (machine_is_omap_h2() + || machine_is_omap_perseus2() + || machine_is_omap_osk()) { + + /* LED1/LED2 pins can be used as GPIO (as done here), or by + * the LPG (works even in deep sleep!), to drive a bicolor + * LED on the H2 sample board, and another on the H2/P2 + * "surfer" expansion board. + * + * The same pins drive a LED on the OSK Mistral board, but + * that's a different kind of LED (just one color at a time). + */ + omap_cfg_reg(P18_1610_GPIO3); + if (omap_request_gpio(3) == 0) + omap_set_gpio_direction(3, 0); + else + printk(KERN_WARNING "LED: can't get GPIO3/red?\n"); + + omap_cfg_reg(MPUIO4); + if (omap_request_gpio(OMAP_MPUIO(4)) == 0) + omap_set_gpio_direction(OMAP_MPUIO(4), 0); + else + printk(KERN_WARNING "LED: can't get MPUIO4/green?\n"); + } + + leds_event(led_start); + return 0; +} + +__initcall(omap_leds_init); diff --git a/arch/arm/mach-omap1/leds.h b/arch/arm/mach-omap1/leds.h new file mode 100644 index 00000000000..a1e9fedc376 --- /dev/null +++ b/arch/arm/mach-omap1/leds.h @@ -0,0 +1,3 @@ +extern void innovator_leds_event(led_event_t evt); +extern void h2p2_dbg_leds_event(led_event_t evt); +extern void osk_leds_event(led_event_t evt); |