1 files changed, 144 insertions, 0 deletions
diff --git a/arch/arm/mach-omap/leds-h2p2-debug.c b/arch/arm/mach-omap/leds-h2p2-debug.c
new file mode 100644
index 0000000..6e98290
--- /dev/null
+++ b/arch/arm/mach-omap/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);
+}