[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>

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 0000000..6e98290
--- /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 0000000..8043b7d
--- /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 0000000..4a0e8b9
--- /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 0000000..8ab21fe
--- /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 0000000..a1e9fed
--- /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);