Merge branch 'linus' into timers/nohz

1 files changed, 450 insertions, 24 deletions

diff --git a/arch/arm/mach-s3c2410/mach-n30.c b/arch/arm/mach-s3c2410/mach-n30.c
index 621f548da61..43c2e915c5b 100644
--- a/arch/arm/mach-s3c2410/mach-n30.c
+++ b/arch/arm/mach-s3c2410/mach-n30.c
@@ -1,9 +1,10 @@
-/* linux/arch/arm/mach-s3c2410/mach-n30.c
+/* Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
+ * Yakumo AlphaX and Airis NC05 PDAs.
  *
  * Copyright (c) 2003-2005 Simtec Electronics
  *	Ben Dooks <ben@simtec.co.uk>
  *
- * Copyright (c) 2005 Christer Weinigel <christer@weinigel.se>
+ * Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
  *
  * There is a wiki with more information about the n30 port at
  * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
@@ -11,36 +12,42 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
-*/
+ */
 
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/list.h>
-#include <linux/timer.h>
-#include <linux/init.h>
+
 #include <linux/delay.h>
-#include <linux/serial_core.h>
+#include <linux/gpio_keys.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
 #include <linux/platform_device.h>
-#include <linux/kthread.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-#include <asm/mach/irq.h>
+#include <linux/serial_core.h>
+#include <linux/timer.h>
 
 #include <asm/hardware.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/mach-types.h>
 
-#include <asm/plat-s3c/regs-serial.h>
+#include <asm/arch/fb.h>
+#include <asm/arch/leds-gpio.h>
 #include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-lcd.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/map.h>
+
 #include <asm/plat-s3c/iic.h>
+#include <asm/plat-s3c/regs-serial.h>
 
-#include <asm/plat-s3c24xx/s3c2410.h>
 #include <asm/plat-s3c24xx/clock.h>
-#include <asm/plat-s3c24xx/devs.h>
 #include <asm/plat-s3c24xx/cpu.h>
+#include <asm/plat-s3c24xx/devs.h>
+#include <asm/plat-s3c24xx/s3c2410.h>
+#include <asm/plat-s3c24xx/udc.h>
 
 static struct map_desc n30_iodesc[] __initdata = {
 	/* nothing here yet */
@@ -64,7 +71,8 @@ static struct s3c2410_uartcfg n30_uartcfgs[] = {
 		.ulcon	     = 0x43,
 		.ufcon	     = 0x51,
 	},
-	/* The BlueTooth controller is connected to port 2 */
+	/* On the N30 the bluetooth controller is connected here.
+	 * On the N35 and variants the GPS receiver is connected here. */
 	[2] = {
 		.hwport	     = 2,
 		.flags	     = 0,
@@ -74,13 +82,260 @@ static struct s3c2410_uartcfg n30_uartcfgs[] = {
 	},
 };
 
+static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
+{
+	switch (cmd) {
+	case S3C2410_UDC_P_ENABLE :
+		s3c2410_gpio_setpin(S3C2410_GPB3, 1);
+		break;
+	case S3C2410_UDC_P_DISABLE :
+		s3c2410_gpio_setpin(S3C2410_GPB3, 0);
+		break;
+	case S3C2410_UDC_P_RESET :
+		break;
+	default:
+		break;
+	}
+}
+
+static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
+	.udc_command		= n30_udc_pullup,
+	.vbus_pin		= S3C2410_GPG1,
+	.vbus_pin_inverted	= 0,
+};
+
+static struct gpio_keys_button n30_buttons[] = {
+	{
+		.gpio		= S3C2410_GPF0,
+		.code		= KEY_POWER,
+		.desc		= "Power",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG9,
+		.code		= KEY_UP,
+		.desc		= "Thumbwheel Up",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG8,
+		.code		= KEY_DOWN,
+		.desc		= "Thumbwheel Down",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG7,
+		.code		= KEY_ENTER,
+		.desc		= "Thumbwheel Press",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF7,
+		.code		= KEY_HOMEPAGE,
+		.desc		= "Home",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF6,
+		.code		= KEY_CALENDAR,
+		.desc		= "Calendar",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF5,
+		.code		= KEY_ADDRESSBOOK,
+		.desc		= "Contacts",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF4,
+		.code		= KEY_MAIL,
+		.desc		= "Mail",
+		.active_low	= 0,
+	},
+};
+
+static struct gpio_keys_platform_data n30_button_data = {
+	.buttons	= n30_buttons,
+	.nbuttons	= ARRAY_SIZE(n30_buttons),
+};
+
+static struct platform_device n30_button_device = {
+	.name		= "gpio-keys",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &n30_button_data,
+	}
+};
+
+static struct gpio_keys_button n35_buttons[] = {
+	{
+		.gpio		= S3C2410_GPF0,
+		.code		= KEY_POWER,
+		.desc		= "Power",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG9,
+		.code		= KEY_UP,
+		.desc		= "Joystick Up",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG8,
+		.code		= KEY_DOWN,
+		.desc		= "Joystick Down",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG6,
+		.code		= KEY_DOWN,
+		.desc		= "Joystick Left",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG5,
+		.code		= KEY_DOWN,
+		.desc		= "Joystick Right",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG7,
+		.code		= KEY_ENTER,
+		.desc		= "Joystick Press",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF7,
+		.code		= KEY_HOMEPAGE,
+		.desc		= "Home",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF6,
+		.code		= KEY_CALENDAR,
+		.desc		= "Calendar",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF5,
+		.code		= KEY_ADDRESSBOOK,
+		.desc		= "Contacts",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF4,
+		.code		= KEY_MAIL,
+		.desc		= "Mail",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPF3,
+		.code		= SW_RADIO,
+		.desc		= "GPS Antenna",
+		.active_low	= 0,
+	},
+	{
+		.gpio		= S3C2410_GPG2,
+		.code		= SW_HEADPHONE_INSERT,
+		.desc		= "Headphone",
+		.active_low	= 0,
+	},
+};
+
+static struct gpio_keys_platform_data n35_button_data = {
+	.buttons	= n35_buttons,
+	.nbuttons	= ARRAY_SIZE(n35_buttons),
+};
+
+static struct platform_device n35_button_device = {
+	.name		= "gpio-keys",
+	.id		= -1,
+	.num_resources	= 0,
+	.dev		= {
+		.platform_data	= &n35_button_data,
+	}
+};
+
+/* This is the bluetooth LED on the device. */
+static struct s3c24xx_led_platdata n30_blue_led_pdata = {
+	.name		= "blue_led",
+	.gpio		= S3C2410_GPG6,
+	.def_trigger	= "",
+};
+
+/* This LED is driven by the battery microcontroller, and is blinking
+ * red, blinking green or solid green when the battery is low,
+ * charging or full respectively.  By driving GPD9 low, it's possible
+ * to force the LED to blink red, so call that warning LED.  */
+static struct s3c24xx_led_platdata n30_warning_led_pdata = {
+	.name		= "warning_led",
+	.flags          = S3C24XX_LEDF_ACTLOW,
+	.gpio		= S3C2410_GPD9,
+	.def_trigger	= "",
+};
+
+static struct platform_device n30_blue_led = {
+	.name		= "s3c24xx_led",
+	.id		= 1,
+	.dev		= {
+		.platform_data	= &n30_blue_led_pdata,
+	},
+};
+
+static struct platform_device n30_warning_led = {
+	.name		= "s3c24xx_led",
+	.id		= 2,
+	.dev		= {
+		.platform_data	= &n30_warning_led_pdata,
+	},
+};
+
+static struct s3c2410fb_display n30_display __initdata = {
+	.type		= S3C2410_LCDCON1_TFT,
+	.width		= 240,
+	.height		= 320,
+	.pixclock	= 170000,
+
+	.xres		= 240,
+	.yres		= 320,
+	.bpp		= 16,
+	.left_margin	= 3,
+	.right_margin	= 40,
+	.hsync_len	= 40,
+	.upper_margin	= 2,
+	.lower_margin	= 3,
+	.vsync_len	= 2,
+
+	.lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
+};
+
+static struct s3c2410fb_mach_info n30_fb_info __initdata = {
+	.displays	= &n30_display,
+	.num_displays	= 1,
+	.default_display = 0,
+	.lpcsel		= 0x06,
+};
+
 static struct platform_device *n30_devices[] __initdata = {
+	&s3c_device_lcd,
+	&s3c_device_wdt,
+	&s3c_device_i2c,
+	&s3c_device_iis,
 	&s3c_device_usb,
+	&s3c_device_usbgadget,
+	&n30_button_device,
+	&n30_blue_led,
+	&n30_warning_led,
+};
+
+static struct platform_device *n35_devices[] __initdata = {
 	&s3c_device_lcd,
 	&s3c_device_wdt,
 	&s3c_device_i2c,
 	&s3c_device_iis,
 	&s3c_device_usbgadget,
+	&n35_button_device,
 };
 
 static struct s3c2410_platform_i2c n30_i2ccfg = {
@@ -90,9 +345,148 @@ static struct s3c2410_platform_i2c n30_i2ccfg = {
 	.max_freq	= 10*1000,
 };
 
+/* Lots of hardcoded stuff, but it sets up the hardware in a useful
+ * state so that we can boot Linux directly from flash. */
+static void __init n30_hwinit(void)
+{
+	/* GPA0-11 special functions -- unknown what they do
+	 * GPA12 N30 special function -- unknown what it does
+	 *       N35/PiN output -- unknown what it does
+	 *
+	 * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
+	 * don't think it does anything useful on the N30, so I ought
+	 * to make it an output there too since it always driven to 0
+	 * as far as I can tell. */
+	if (machine_is_n30())
+		__raw_writel(0x007fffff, S3C2410_GPACON);
+	if (machine_is_n35())
+		__raw_writel(0x007fefff, S3C2410_GPACON);
+	__raw_writel(0x00000000, S3C2410_GPADAT);
+
+	/* GPB0 TOUT0 backlight level
+	 * GPB1 output 1=backlight on
+	 * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
+	 * GPB3 output USB D+ pull up 0=disabled, 1=enabled
+	 * GPB4 N30 output -- unknown function
+	 *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
+	 * GPB5 output -- unknown function
+	 * GPB6 input -- unknown function
+	 * GPB7 output -- unknown function
+	 * GPB8 output -- probably LCD driver enable
+	 * GPB9 output -- probably LCD VSYNC driver enable
+	 * GPB10 output -- probably LCD HSYNC driver enable
+	 */
+	__raw_writel(0x00154556, S3C2410_GPBCON);
+	__raw_writel(0x00000750, S3C2410_GPBDAT);
+	__raw_writel(0x00000073, S3C2410_GPBUP);
+
+	/* GPC0 input RS232 DCD/DSR/RI
+	 * GPC1 LCD
+	 * GPC2 output RS232 DTR?
+	 * GPC3 input RS232 DCD/DSR/RI
+	 * GPC4 LCD
+	 * GPC5 output 0=NAND write enabled, 1=NAND write protect
+	 * GPC6 input -- unknown function
+	 * GPC7 input charger status 0=charger connected
+	 *      this input can be triggered by power on the USB device
+	 *      port too, but will go back to disconnected soon after.
+	 * GPC8 N30/N35 output -- unknown function, always driven to 1
+	 *      PiN input -- unknown function, always read as 1
+	 *      Make it an input with a pull up for all models.
+	 * GPC9-15 LCD
+	 */
+	__raw_writel(0xaaa80618, S3C2410_GPCCON);
+	__raw_writel(0x0000014c, S3C2410_GPCDAT);
+	__raw_writel(0x0000fef2, S3C2410_GPCUP);
+
+	/* GPD0 input -- unknown function
+	 * GPD1-D7 LCD
+	 * GPD8 N30 output -- unknown function
+	 *      N35/PiN output 1=GPS LED on
+	 * GPD9 output 0=power led blinks red, 1=normal power led function
+	 * GPD10 output -- unknown function
+	 * GPD11-15 LCD drivers
+	 */
+	__raw_writel(0xaa95aaa4, S3C2410_GPDCON);
+	__raw_writel(0x00000601, S3C2410_GPDDAT);
+	__raw_writel(0x0000fbfe, S3C2410_GPDUP);
+
+	/* GPE0-4 I2S audio bus
+	 * GPE5-10 SD/MMC bus
+	 * E11-13 outputs -- unknown function, probably power management
+	 * E14-15 I2C bus connected to the battery controller
+	 */
+	__raw_writel(0xa56aaaaa, S3C2410_GPECON);
+	__raw_writel(0x0000efc5, S3C2410_GPEDAT);
+	__raw_writel(0x0000f81f, S3C2410_GPEUP);
+
+	/* GPF0  input 0=power button pressed
+	 * GPF1  input SD/MMC switch 0=card present
+	 * GPF2  N30 1=reset button pressed (inverted compared to the rest)
+	 *	 N35/PiN 0=reset button pressed
+	 * GPF3  N30/PiN input -- unknown function
+	 *       N35 input GPS antenna position, 0=antenna closed, 1=open
+	 * GPF4  input 0=button 4 pressed
+	 * GPF5  input 0=button 3 pressed
+	 * GPF6  input 0=button 2 pressed
+	 * GPF7  input 0=button 1 pressed
+	 */
+	__raw_writel(0x0000aaaa, S3C2410_GPFCON);
+	__raw_writel(0x00000000, S3C2410_GPFDAT);
+	__raw_writel(0x000000ff, S3C2410_GPFUP);
+
+	/* GPG0  input RS232 DCD/DSR/RI
+	 * GPG1  input 1=USB gadget port has power from a host
+	 * GPG2  N30 input -- unknown function
+	 *       N35/PiN input 0=headphones plugged in, 1=not plugged in
+	 * GPG3  N30 output -- unknown function
+	 *       N35/PiN input with unknown function
+	 * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
+	 * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
+	 *       N35/PiN input joystick right
+	 * GPG6  N30 output 0=blue led on, 1=off
+	 *       N35/PiN input joystick left
+	 * GPG7  input 0=thumbwheel pressed
+	 * GPG8  input 0=thumbwheel down
+	 * GPG9  input 0=thumbwheel up
+	 * GPG10 input SD/MMC write protect switch
+	 * GPG11 N30 input -- unknown function
+	 *       N35 output 0=GPS antenna powered, 1=not powered
+	 *       PiN output -- unknown function
+	 * GPG12-15 touch screen functions
+	 *
+	 * The pullups differ between the models, so enable all
+	 * pullups that are enabled on any of the models.
+	 */
+	if (machine_is_n30())
+		__raw_writel(0xff0a956a, S3C2410_GPGCON);
+	if (machine_is_n35())
+		__raw_writel(0xff4aa92a, S3C2410_GPGCON);
+	__raw_writel(0x0000e800, S3C2410_GPGDAT);
+	__raw_writel(0x0000f86f, S3C2410_GPGUP);
+
+	/* GPH0/1/2/3 RS232 serial port
+	 * GPH4/5 IrDA serial port
+	 * GPH6/7  N30 BlueTooth serial port
+	 *         N35/PiN GPS receiver
+	 * GPH8 input -- unknown function
+	 * GPH9 CLKOUT0 HCLK -- unknown use
+	 * GPH10 CLKOUT1 FCLK -- unknown use
+	 *
+	 * The pull ups for H6/H7 are enabled on N30 but not on the
+	 * N35/PiN.  I suppose is useful for a budget model of the N30
+	 * with no bluetooh.  It doesn't hurt to have the pull ups
+	 * enabled on the N35, so leave them enabled for all models.
+	 */
+	__raw_writel(0x0028aaaa, S3C2410_GPHCON);
+	__raw_writel(0x000005ef, S3C2410_GPHDAT);
+	__raw_writel(0x0000063f, S3C2410_GPHUP);
+}
+
 static void __init n30_map_io(void)
 {
 	s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
+	n30_hwinit();
 	s3c24xx_init_clocks(0);
 	s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 }
@@ -106,7 +500,9 @@ static void __init n30_init_irq(void)
 
 static void __init n30_init(void)
 {
+	s3c24xx_fb_set_platdata(&n30_fb_info);
 	s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
+	s3c24xx_udc_set_platdata(&n30_udc_cfg);
 
 	/* Turn off suspend on both USB ports, and switch the
 	 * selectable USB port to USB device mode. */
@@ -115,7 +511,32 @@ static void __init n30_init(void)
 			      S3C2410_MISCCR_USBSUSPND0 |
 			      S3C2410_MISCCR_USBSUSPND1, 0x0);
 
-	platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
+	if (machine_is_n30()) {
+		/* Turn off suspend on both USB ports, and switch the
+		 * selectable USB port to USB device mode. */
+		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
+				      S3C2410_MISCCR_USBSUSPND0 |
+				      S3C2410_MISCCR_USBSUSPND1, 0x0);
+
+		platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
+	}
+
+	if (machine_is_n35()) {
+		/* Turn off suspend and switch the selectable USB port
+		 * to USB device mode.  Turn on suspend for the host
+		 * port since it is not connected on the N35.
+		 *
+		 * Actually, the host port is available at some pads
+		 * on the back of the device, so it would actually be
+		 * possible to add a USB device inside the N35 if you
+		 * are willing to do some hardware modifications. */
+		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
+				      S3C2410_MISCCR_USBSUSPND0 |
+				      S3C2410_MISCCR_USBSUSPND1,
+				      S3C2410_MISCCR_USBSUSPND1);
+
+		platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
+	}
 }
 
 MACHINE_START(N30, "Acer-N30")
@@ -131,9 +552,14 @@ MACHINE_START(N30, "Acer-N30")
 	.map_io		= n30_map_io,
 MACHINE_END
 
-/*
-    Local variables:
-        compile-command: "make ARCH=arm CROSS_COMPILE=/usr/local/arm/3.3.2/bin/arm-linux- -k -C ../../.."
-        c-basic-offset: 8
-    End:
-*/
+MACHINE_START(N35, "Acer-N35")
+	/* Maintainer: Christer Weinigel <christer@weinigel.se>
+	*/
+	.phys_io	= S3C2410_PA_UART,
+	.io_pg_offst	= (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
+	.boot_params	= S3C2410_SDRAM_PA + 0x100,
+	.timer		= &s3c24xx_timer,
+	.init_machine	= n30_init,
+	.init_irq	= n30_init_irq,
+	.map_io		= n30_map_io,
+MACHINE_END