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author | Tony Lindgren <tony@atomide.com> | 2005-07-10 19:58:10 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-07-10 19:58:10 +0100 |
commit | 6f3e14163e066a6f43a54098a12185f25400fd68 (patch) | |
tree | 2c2818bbe759d4867df01dee69edd37540bcc30e /arch/arm/mach-omap1/leds-h2p2-debug.c | |
parent | 3b59b6beb423267e8fe2ef3596d98aba0b910341 (diff) | |
download | linux-stable-6f3e14163e066a6f43a54098a12185f25400fd68.tar.gz linux-stable-6f3e14163e066a6f43a54098a12185f25400fd68.tar.bz2 linux-stable-6f3e14163e066a6f43a54098a12185f25400fd68.zip |
[PATCH] ARM: 2799/1: OMAP update 4/11: Move OMAP1 LED code into mach-omap1 directory
Patch from Tony Lindgren
This patch by Paul Mundt and other OMAP developers
moves OMAP1 specific LED code into mach-omap1 directory.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-omap1/leds-h2p2-debug.c')
-rw-r--r-- | arch/arm/mach-omap1/leds-h2p2-debug.c | 144 |
1 files changed, 144 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 000000000000..6e98290cca5c --- /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); +} |