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-rw-r--r--arch/arm/mach-s3c2410/mach-n30.c474
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 621f548da610..43c2e915c5bf 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
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 09:21:15 +0100