Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic

Patches from David Howells <dhowells@redhat.com>:

This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.

Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.

* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: (Scripted) Disintegrate include/asm-generic
  UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
  c6x: remove c6x signal.h
  UAPI: Split compound conditionals containing __KERNEL__ in Arm64
  UAPI: Fix the guards on various asm/unistd.h files

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 86 insertions, 134 deletions

diff --git a/arch/arm/mach-shark/leds.c b/arch/arm/mach-shark/leds.c
index 25609076921f..081c778a10ac 100644
--- a/arch/arm/mach-shark/leds.c
+++ b/arch/arm/mach-shark/leds.c
@@ -1,165 +1,117 @@
 /*
- * arch/arm/mach-shark/leds.c
- * by Alexander Schulz
- *
- * derived from:
- * arch/arm/kernel/leds-footbridge.c
- * Copyright (C) 1998-1999 Russell King
- *
  * DIGITAL Shark LED control routines.
  *
- * The leds use is as follows:
- *  - Green front - toggles state every 50 timer interrupts
- *  - Amber front - Unused, this is a dual color led (Amber/Green)
- *  - Amber back  - On if system is not idle
+ * Driver for the 3 user LEDs found on the Shark
+ * Based on Versatile and RealView machine LED code
  *
- * Changelog:
+ * License terms: GNU General Public License (GPL) version 2
+ * Author: Bryan Wu <bryan.wu@canonical.com>
  */
 #include <linux/kernel.h>
-#include <linux/module.h>
 #include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/ioport.h>
 #include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/leds.h>
 
-#include <asm/leds.h>
+#include <asm/mach-types.h>
 
-#define LED_STATE_ENABLED	1
-#define LED_STATE_CLAIMED	2
+#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+struct shark_led {
+	struct led_classdev cdev;
+	u8 mask;
+};
 
-#define SEQUOIA_LED_GREEN       (1<<6)
-#define SEQUOIA_LED_AMBER       (1<<5)
-#define SEQUOIA_LED_BACK        (1<<7)
+/*
+ * The triggers lines up below will only be used if the
+ * LED triggers are compiled in.
+ */
+static const struct {
+	const char *name;
+	const char *trigger;
+} shark_leds[] = {
+	{ "shark:amber0", "default-on", },	/* Bit 5 */
+	{ "shark:green", "heartbeat", },	/* Bit 6 */
+	{ "shark:amber1", "cpu0" },		/* Bit 7 */
+};
+
+static u16 led_reg_read(void)
+{
+	outw(0x09, 0x24);
+	return inw(0x26);
+}
 
-static char led_state;
-static short hw_led_state;
-static short saved_state;
+static void led_reg_write(u16 value)
+{
+	outw(0x09, 0x24);
+	outw(value, 0x26);
+}
 
-static DEFINE_RAW_SPINLOCK(leds_lock);
+static void shark_led_set(struct led_classdev *cdev,
+			      enum led_brightness b)
+{
+	struct shark_led *led = container_of(cdev,
+						 struct shark_led, cdev);
+	u16 reg = led_reg_read();
 
-short sequoia_read(int addr) {
-  outw(addr,0x24);
-  return inw(0x26);
-}
+	if (b != LED_OFF)
+		reg |= led->mask;
+	else
+		reg &= ~led->mask;
 
-void sequoia_write(short value,short addr) {
-  outw(addr,0x24);
-  outw(value,0x26);
+	led_reg_write(reg);
 }
 
-static void sequoia_leds_event(led_event_t evt)
+static enum led_brightness shark_led_get(struct led_classdev *cdev)
 {
-	unsigned long flags;
-
-	raw_spin_lock_irqsave(&leds_lock, flags);
+	struct shark_led *led = container_of(cdev,
+						 struct shark_led, cdev);
+	u16 reg = led_reg_read();
 
-	hw_led_state = sequoia_read(0x09);
+	return (reg & led->mask) ? LED_FULL : LED_OFF;
+}
 
-	switch (evt) {
-	case led_start:
-		hw_led_state |= SEQUOIA_LED_GREEN;
-		hw_led_state |= SEQUOIA_LED_AMBER;
-#ifdef CONFIG_LEDS_CPU
-		hw_led_state |= SEQUOIA_LED_BACK;
-#else
-		hw_led_state &= ~SEQUOIA_LED_BACK;
-#endif
-		led_state |= LED_STATE_ENABLED;
-		break;
-
-	case led_stop:
-		hw_led_state &= ~SEQUOIA_LED_BACK;
-		hw_led_state |= SEQUOIA_LED_GREEN;
-		hw_led_state |= SEQUOIA_LED_AMBER;
-		led_state &= ~LED_STATE_ENABLED;
-		break;
-
-	case led_claim:
-		led_state |= LED_STATE_CLAIMED;
-		saved_state = hw_led_state;
-		hw_led_state &= ~SEQUOIA_LED_BACK;
-		hw_led_state |= SEQUOIA_LED_GREEN;
-		hw_led_state |= SEQUOIA_LED_AMBER;
-		break;
-
-	case led_release:
-		led_state &= ~LED_STATE_CLAIMED;
-		hw_led_state = saved_state;
-		break;
-
-#ifdef CONFIG_LEDS_TIMER
-	case led_timer:
-		if (!(led_state & LED_STATE_CLAIMED))
-			hw_led_state ^= SEQUOIA_LED_GREEN;
-		break;
-#endif
+static int __init shark_leds_init(void)
+{
+	int i;
+	u16 reg;
 
-#ifdef CONFIG_LEDS_CPU
-	case led_idle_start:
-		if (!(led_state & LED_STATE_CLAIMED))
-			hw_led_state &= ~SEQUOIA_LED_BACK;
-		break;
+	if (!machine_is_shark())
+		return -ENODEV;
 
-	case led_idle_end:
-		if (!(led_state & LED_STATE_CLAIMED))
-			hw_led_state |= SEQUOIA_LED_BACK;
-		break;
-#endif
+	for (i = 0; i < ARRAY_SIZE(shark_leds); i++) {
+		struct shark_led *led;
 
-	case led_green_on:
-		if (led_state & LED_STATE_CLAIMED)
-			hw_led_state &= ~SEQUOIA_LED_GREEN;
-		break;
-
-	case led_green_off:
-		if (led_state & LED_STATE_CLAIMED)
-			hw_led_state |= SEQUOIA_LED_GREEN;
-		break;
-
-	case led_amber_on:
-		if (led_state & LED_STATE_CLAIMED)
-			hw_led_state &= ~SEQUOIA_LED_AMBER;
-		break;
-
-	case led_amber_off:
-		if (led_state & LED_STATE_CLAIMED)
-			hw_led_state |= SEQUOIA_LED_AMBER;
-		break;
-
-	case led_red_on:
-		if (led_state & LED_STATE_CLAIMED)
-			hw_led_state |= SEQUOIA_LED_BACK;
-		break;
-
-	case led_red_off:
-		if (led_state & LED_STATE_CLAIMED)
-			hw_led_state &= ~SEQUOIA_LED_BACK;
-		break;
-
-	default:
-		break;
-	}
+		led = kzalloc(sizeof(*led), GFP_KERNEL);
+		if (!led)
+			break;
 
-	if  (led_state & LED_STATE_ENABLED)
-		sequoia_write(hw_led_state,0x09);
+		led->cdev.name = shark_leds[i].name;
+		led->cdev.brightness_set = shark_led_set;
+		led->cdev.brightness_get = shark_led_get;
+		led->cdev.default_trigger = shark_leds[i].trigger;
 
-	raw_spin_unlock_irqrestore(&leds_lock, flags);
-}
+		/* Count in 5 bits offset */
+		led->mask = BIT(i + 5);
 
-static int __init leds_init(void)
-{
-	extern void (*leds_event)(led_event_t);
-	short temp;
-	
-	leds_event = sequoia_leds_event;
+		if (led_classdev_register(NULL, &led->cdev) < 0) {
+			kfree(led);
+			break;
+		}
+	}
 
 	/* Make LEDs independent of power-state */
-	request_region(0x24,4,"sequoia");
-	temp = sequoia_read(0x09);
-	temp |= 1<<10;
-	sequoia_write(temp,0x09);
-	leds_event(led_start);
+	request_region(0x24, 4, "led_reg");
+	reg = led_reg_read();
+	reg |= 1 << 10;
+	led_reg_write(reg);
+
 	return 0;
 }
 
-__initcall(leds_init);
+/*
+ * Since we may have triggers on any subsystem, defer registration
+ * until after subsystem_init.
+ */
+fs_initcall(shark_leds_init);
+#endif