Merge branch 'master' into x86/memblock

Conflicts & resolutions:

* arch/x86/xen/setup.c

	dc91c728fd "xen: allow extra memory to be in multiple regions"
	24aa07882b "memblock, x86: Replace memblock_x86_reserve/free..."

	conflicted on xen_add_extra_mem() updates.  The resolution is
	trivial as the latter just want to replace
	memblock_x86_reserve_range() with memblock_reserve().

* drivers/pci/intel-iommu.c

	166e9278a3f "x86/ia64: intel-iommu: move to drivers/iommu/"
	5dfe8660a3d "bootmem: Replace work_with_active_regions() with..."

	conflicted as the former moved the file under drivers/iommu/.
	Resolved by applying the chnages from the latter on the moved
	file.

* mm/Kconfig

	6661672053a "memblock: add NO_BOOTMEM config symbol"
	c378ddd53f9 "memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option"

	conflicted trivially.  Both added config options.  Just
	letting both add their own options resolves the conflict.

* mm/memblock.c

	d1f0ece6cdc "mm/memblock.c: small function definition fixes"
	ed7b56a799c "memblock: Remove memblock_memory_can_coalesce()"

	confliected.  The former updates function removed by the
	latter.  Resolution is trivial.

Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 189 insertions, 26 deletions

diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c
index cfb76077bd2..4790f3f3d00 100644
--- a/arch/arm/mach-sa1100/simpad.c
+++ b/arch/arm/mach-sa1100/simpad.c
@@ -13,6 +13,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/io.h>
+#include <linux/gpio.h>
 
 #include <asm/irq.h>
 #include <mach/hardware.h>
@@ -28,35 +29,92 @@
 
 #include <linux/serial_core.h>
 #include <linux/ioport.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+#include <linux/leds.h>
+#include <linux/i2c-gpio.h>
 
 #include "generic.h"
 
-long cs3_shadow;
+/*
+ * CS3 support
+ */
+
+static long cs3_shadow;
+static spinlock_t cs3_lock;
+static struct gpio_chip cs3_gpio;
+
+long simpad_get_cs3_ro(void)
+{
+	return readl(CS3_BASE);
+}
+EXPORT_SYMBOL(simpad_get_cs3_ro);
 
-long get_cs3_shadow(void)
+long simpad_get_cs3_shadow(void)
 {
 	return cs3_shadow;
 }
+EXPORT_SYMBOL(simpad_get_cs3_shadow);
 
-void set_cs3(long value)
+static void __simpad_write_cs3(void)
 {
-	*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow = value;
+	writel(cs3_shadow, CS3_BASE);
 }
 
-void set_cs3_bit(int value)
+void simpad_set_cs3_bit(int value)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&cs3_lock, flags);
 	cs3_shadow |= value;
-	*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
+	__simpad_write_cs3();
+	spin_unlock_irqrestore(&cs3_lock, flags);
 }
+EXPORT_SYMBOL(simpad_set_cs3_bit);
 
-void clear_cs3_bit(int value)
+void simpad_clear_cs3_bit(int value)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&cs3_lock, flags);
 	cs3_shadow &= ~value;
-	*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
+	__simpad_write_cs3();
+	spin_unlock_irqrestore(&cs3_lock, flags);
 }
+EXPORT_SYMBOL(simpad_clear_cs3_bit);
 
-EXPORT_SYMBOL(set_cs3_bit);
-EXPORT_SYMBOL(clear_cs3_bit);
+static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+	if (offset > 15)
+		return;
+	if (value)
+		simpad_set_cs3_bit(1 << offset);
+	else
+		simpad_clear_cs3_bit(1 << offset);
+};
+
+static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+	if (offset > 15)
+		return simpad_get_cs3_ro() & (1 << (offset - 16));
+	return simpad_get_cs3_shadow() & (1 << offset);
+};
+
+static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+	if (offset > 15)
+		return 0;
+	return -EINVAL;
+};
+
+static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
+	int value)
+{
+	if (offset > 15)
+		return -EINVAL;
+	cs3_gpio_set(chip, offset, value);
+	return 0;
+};
 
 static struct map_desc simpad_io_desc[] __initdata = {
 	{	/* MQ200 */
@@ -64,9 +122,9 @@ static struct map_desc simpad_io_desc[] __initdata = {
 		.pfn		= __phys_to_pfn(0x4b800000),
 		.length		= 0x00800000,
 		.type		= MT_DEVICE
-	}, {	/* Paules CS3, write only */
-		.virtual	=  0xf1000000,
-		.pfn		= __phys_to_pfn(0x18000000),
+	}, {	/* Simpad CS3 */
+		.virtual	= CS3_BASE,
+		.pfn		= __phys_to_pfn(SA1100_CS3_PHYS),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	},
@@ -78,12 +136,12 @@ static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 	if (port->mapbase == (u_int)&Ser1UTCR0) {
 		if (state)
 		{
-			clear_cs3_bit(RS232_ON);
-			clear_cs3_bit(DECT_POWER_ON);
+			simpad_clear_cs3_bit(RS232_ON);
+			simpad_clear_cs3_bit(DECT_POWER_ON);
 		}else
 		{
-			set_cs3_bit(RS232_ON);
-			set_cs3_bit(DECT_POWER_ON);
+			simpad_set_cs3_bit(RS232_ON);
+			simpad_set_cs3_bit(DECT_POWER_ON);
 		}
 	}
 }
@@ -132,6 +190,7 @@ static struct resource simpad_flash_resources [] = {
 static struct mcp_plat_data simpad_mcp_data = {
 	.mccr0		= MCCR0_ADM,
 	.sclk_rate	= 11981000,
+	.gpio_base	= SIMPAD_UCB1X00_GPIO_BASE,
 };
 
 
@@ -142,9 +201,10 @@ static void __init simpad_map_io(void)
 
 	iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
 
-	set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON |
-		      ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
-
+	/* Initialize CS3 */
+	cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON |
+		RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
+	__simpad_write_cs3(); /* Spinlocks not yet initialized */
 
         sa1100_register_uart_fns(&simpad_port_fns);
 	sa1100_register_uart(0, 3);  /* serial interface */
@@ -170,13 +230,14 @@ static void __init simpad_map_io(void)
 
 static void simpad_power_off(void)
 {
-	local_irq_disable(); // was cli
-	set_cs3(0x800);        /* only SD_MEDIAQ */
+	local_irq_disable();
+	cs3_shadow = SD_MEDIAQ;
+	__simpad_write_cs3(); /* Bypass spinlock here */
 
 	/* disable internal oscillator, float CS lines */
 	PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
-	/* enable wake-up on GPIO0 (Assabet...) */
-	PWER = GFER = GRER = 1;
+	/* enable wake-up on GPIO0 */
+	PWER = GFER = GRER = PWER_GPIO0;
 	/*
 	 * set scratchpad to zero, just in case it is used as a
 	 * restart address by the bootloader.
@@ -192,6 +253,91 @@ static void simpad_power_off(void)
 
 }
 
+/*
+ * gpio_keys
+*/
+
+static struct gpio_keys_button simpad_button_table[] = {
+	{ KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
+};
+
+static struct gpio_keys_platform_data simpad_keys_data = {
+	.buttons = simpad_button_table,
+	.nbuttons = ARRAY_SIZE(simpad_button_table),
+};
+
+static struct platform_device simpad_keys = {
+	.name = "gpio-keys",
+	.dev = {
+		.platform_data = &simpad_keys_data,
+	},
+};
+
+static struct gpio_keys_button simpad_polled_button_table[] = {
+	{ KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
+	{ KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
+	{ KEY_UP,    SIMPAD_UCB1X00_GPIO_UP,    1, "up button" },
+	{ KEY_DOWN,  SIMPAD_UCB1X00_GPIO_DOWN,  1, "down button" },
+	{ KEY_LEFT,  SIMPAD_UCB1X00_GPIO_LEFT,  1, "left button" },
+	{ KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
+};
+
+static struct gpio_keys_platform_data simpad_polled_keys_data = {
+	.buttons = simpad_polled_button_table,
+	.nbuttons = ARRAY_SIZE(simpad_polled_button_table),
+	.poll_interval = 50,
+};
+
+static struct platform_device simpad_polled_keys = {
+	.name = "gpio-keys-polled",
+	.dev = {
+		.platform_data = &simpad_polled_keys_data,
+	},
+};
+
+/*
+ * GPIO LEDs
+ */
+
+static struct gpio_led simpad_leds[] = {
+	{
+		.name = "simpad:power",
+		.gpio = SIMPAD_CS3_LED2_ON,
+		.active_low = 0,
+		.default_trigger = "default-on",
+	},
+};
+
+static struct gpio_led_platform_data simpad_led_data = {
+	.num_leds = ARRAY_SIZE(simpad_leds),
+	.leds = simpad_leds,
+};
+
+static struct platform_device simpad_gpio_leds = {
+	.name = "leds-gpio",
+	.id = 0,
+	.dev = {
+		.platform_data = &simpad_led_data,
+	},
+};
+
+/*
+ * i2c
+ */
+static struct i2c_gpio_platform_data simpad_i2c_data = {
+	.sda_pin = GPIO_GPIO21,
+	.scl_pin = GPIO_GPIO25,
+	.udelay = 10,
+	.timeout = HZ,
+};
+
+static struct platform_device simpad_i2c = {
+	.name = "i2c-gpio",
+	.id = 0,
+	.dev = {
+		.platform_data = &simpad_i2c_data,
+	},
+};
 
 /*
  * MediaQ Video Device
@@ -202,7 +348,11 @@ static struct platform_device simpad_mq200fb = {
 };
 
 static struct platform_device *devices[] __initdata = {
-	&simpad_mq200fb
+	&simpad_keys,
+	&simpad_polled_keys,
+	&simpad_mq200fb,
+	&simpad_gpio_leds,
+	&simpad_i2c,
 };
 
 
@@ -211,6 +361,19 @@ static int __init simpad_init(void)
 {
 	int ret;
 
+	spin_lock_init(&cs3_lock);
+
+	cs3_gpio.label = "simpad_cs3";
+	cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
+	cs3_gpio.ngpio = 24;
+	cs3_gpio.set = cs3_gpio_set;
+	cs3_gpio.get = cs3_gpio_get;
+	cs3_gpio.direction_input = cs3_gpio_direction_input;
+	cs3_gpio.direction_output = cs3_gpio_direction_output;
+	ret = gpiochip_add(&cs3_gpio);
+	if (ret)
+		printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");
+
 	pm_power_off = simpad_power_off;
 
 	sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
@@ -229,7 +392,7 @@ arch_initcall(simpad_init);
 
 MACHINE_START(SIMPAD, "Simpad")
 	/* Maintainer: Holger Freyther */
-	.boot_params	= 0xc0000100,
+	.atag_offset	= 0x100,
 	.map_io		= simpad_map_io,
 	.init_irq	= sa1100_init_irq,
 	.timer		= &sa1100_timer,