ARM: S3C2440: Add HP iPAQ RX1950 machine support

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Denis Grigoriev <dgreenday@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

3 files changed, 596 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2440/Kconfig b/arch/arm/mach-s3c2440/Kconfig
index 7f465265cf0..a6c5df6d41e 100644
--- a/arch/arm/mach-s3c2440/Kconfig
+++ b/arch/arm/mach-s3c2440/Kconfig
@@ -187,4 +187,17 @@ config MACH_MINI2440
 	  Say Y here to select support for the MINI2440. Is a 10cm x 10cm board
 	  available via various sources. It can come with a 3.5" or 7" touch LCD.
 
+config MACH_RX1950
+	bool "HP iPAQ rx1950"
+	select CPU_S3C2442
+	select S3C24XX_DCLK
+	select PM_H1940 if PM
+	select I2C
+	select S3C2410_PWM
+	select S3C_DEV_NAND
+	select S3C2410_IOTIMING if S3C2440_CPUFREQ
+	select S3C2440_XTAL_16934400
+	help
+	   Say Y here if you're using HP iPAQ rx1950
+
 endmenu
diff --git a/arch/arm/mach-s3c2440/Makefile b/arch/arm/mach-s3c2440/Makefile
index c85ba32d895..d5440fa34b0 100644
--- a/arch/arm/mach-s3c2440/Makefile
+++ b/arch/arm/mach-s3c2440/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_MACH_NEXCODER_2440) += mach-nexcoder.o
 obj-$(CONFIG_MACH_AT2440EVB) += mach-at2440evb.o
 obj-$(CONFIG_MACH_MINI2440) += mach-mini2440.o
 obj-$(CONFIG_MACH_NEO1973_GTA02) += mach-gta02.o
+obj-$(CONFIG_MACH_RX1950) += mach-rx1950.o
 
 # extra machine support
 
diff --git a/arch/arm/mach-s3c2440/mach-rx1950.c b/arch/arm/mach-s3c2440/mach-rx1950.c
new file mode 100644
index 00000000000..8603b577a24
--- /dev/null
+++ b/arch/arm/mach-s3c2440/mach-rx1950.c
@@ -0,0 +1,582 @@
+/* linux/arch/arm/mach-s3c2440/mach-rx1950.c
+ *
+ * Copyright (c) 2006-2009 Victor Chukhantsev, Denis Grigoriev,
+ * Copyright (c) 2007-2010 Vasily Khoruzhick
+ *
+ * based on smdk2440 written by Ben Dooks
+ *
+ * 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/delay.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+#include <linux/sysdev.h>
+#include <linux/pwm_backlight.h>
+#include <linux/pwm.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <linux/mmc/host.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach-types.h>
+
+#include <mach/regs-gpio.h>
+#include <mach/regs-gpioj.h>
+#include <mach/h1940.h>
+#include <mach/fb.h>
+
+#include <plat/clock.h>
+#include <plat/regs-serial.h>
+#include <plat/regs-iic.h>
+#include <plat/mci.h>
+#include <plat/udc.h>
+#include <plat/nand.h>
+#include <plat/iic.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/pm.h>
+#include <plat/irq.h>
+#include <plat/ts.h>
+
+#define LCD_PWM_PERIOD 192960
+#define LCD_PWM_DUTY 127353
+
+static struct map_desc rx1950_iodesc[] __initdata = {
+};
+
+static struct s3c24xx_uart_clksrc rx1950_serial_clocks[] = {
+	[0] = {
+	       .name = "fclk",
+	       .divisor = 0x0a,
+	       .min_baud = 0,
+	       .max_baud = 0,
+	},
+};
+
+static struct s3c2410_uartcfg rx1950_uartcfgs[] __initdata = {
+	[0] = {
+	       .hwport = 0,
+	       .flags = 0,
+	       .ucon = 0x3c5,
+	       .ulcon = 0x03,
+	       .ufcon = 0x51,
+	       .clocks = rx1950_serial_clocks,
+	       .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
+	},
+	[1] = {
+	       .hwport = 1,
+	       .flags = 0,
+	       .ucon = 0x3c5,
+	       .ulcon = 0x03,
+	       .ufcon = 0x51,
+	       .clocks = rx1950_serial_clocks,
+	       .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
+	},
+	/* IR port */
+	[2] = {
+	       .hwport = 2,
+	       .flags = 0,
+	       .ucon = 0x3c5,
+	       .ulcon = 0x43,
+	       .ufcon = 0xf1,
+	       .clocks = rx1950_serial_clocks,
+	       .clocks_size = ARRAY_SIZE(rx1950_serial_clocks),
+	},
+};
+
+static struct s3c2410fb_display rx1950_display = {
+	.type = S3C2410_LCDCON1_TFT,
+	.width = 240,
+	.height = 320,
+	.xres = 240,
+	.yres = 320,
+	.bpp = 16,
+
+	.pixclock = 260000,
+	.left_margin = 10,
+	.right_margin = 20,
+	.hsync_len = 10,
+	.upper_margin = 2,
+	.lower_margin = 2,
+	.vsync_len = 2,
+
+	.lcdcon5 = S3C2410_LCDCON5_FRM565 |
+			   S3C2410_LCDCON5_INVVCLK |
+			   S3C2410_LCDCON5_INVVLINE |
+			   S3C2410_LCDCON5_INVVFRAME |
+			   S3C2410_LCDCON5_HWSWP |
+			   (0x02 << 13) |
+			   (0x02 << 15),
+
+};
+
+static struct s3c2410fb_mach_info rx1950_lcd_cfg = {
+	.displays = &rx1950_display,
+	.num_displays = 1,
+	.default_display = 0,
+
+	.lpcsel = 0x02,
+	.gpccon = 0xaa9556a9,
+	.gpccon_mask = 0xffc003fc,
+	.gpcup = 0x0000ffff,
+	.gpcup_mask = 0xffffffff,
+
+	.gpdcon = 0xaa90aaa1,
+	.gpdcon_mask = 0xffc0fff0,
+	.gpdup = 0x0000fcfd,
+	.gpdup_mask = 0xffffffff,
+
+};
+
+static struct pwm_device *lcd_pwm;
+
+void rx1950_lcd_power(int enable)
+{
+	int i;
+	static int enabled;
+	if (enabled == enable)
+		return;
+	if (!enable) {
+
+		/* GPC11-GPC15->OUTPUT */
+		for (i = 11; i < 16; i++)
+			gpio_direction_output(S3C2410_GPC(i), 1);
+
+		/* Wait a bit here... */
+		mdelay(100);
+
+		/* GPD2-GPD7->OUTPUT */
+		/* GPD11-GPD15->OUTPUT */
+		/* GPD2-GPD7->1, GPD11-GPD15->1 */
+		for (i = 2; i < 8; i++)
+			gpio_direction_output(S3C2410_GPD(i), 1);
+		for (i = 11; i < 16; i++)
+			gpio_direction_output(S3C2410_GPD(i), 1);
+
+		/* Wait a bit here...*/
+		mdelay(100);
+
+		/* GPB0->OUTPUT, GPB0->0 */
+		gpio_direction_output(S3C2410_GPB(0), 0);
+
+		/* GPC1-GPC4->OUTPUT, GPC1-4->0 */
+		for (i = 1; i < 5; i++)
+			gpio_direction_output(S3C2410_GPC(i), 0);
+
+		/* GPC15-GPC11->0 */
+		for (i = 11; i < 16; i++)
+			gpio_direction_output(S3C2410_GPC(i), 0);
+
+		/* GPD15-GPD11->0, GPD2->GPD7->0 */
+		for (i = 11; i < 16; i++)
+			gpio_direction_output(S3C2410_GPD(i), 0);
+
+		for (i = 2; i < 8; i++)
+			gpio_direction_output(S3C2410_GPD(i), 0);
+
+		/* GPC6->0, GPC7->0, GPC5->0 */
+		gpio_direction_output(S3C2410_GPC(6), 0);
+		gpio_direction_output(S3C2410_GPC(7), 0);
+		gpio_direction_output(S3C2410_GPC(5), 0);
+
+		/* GPB1->OUTPUT, GPB1->0 */
+		gpio_direction_output(S3C2410_GPB(1), 0);
+		pwm_config(lcd_pwm, 0, LCD_PWM_PERIOD);
+		pwm_disable(lcd_pwm);
+
+		/* GPC0->0, GPC10->0 */
+		gpio_direction_output(S3C2410_GPC(0), 0);
+		gpio_direction_output(S3C2410_GPC(10), 0);
+	} else {
+		pwm_config(lcd_pwm, LCD_PWM_DUTY, LCD_PWM_PERIOD);
+		pwm_enable(lcd_pwm);
+
+		gpio_direction_output(S3C2410_GPC(0), 1);
+		gpio_direction_output(S3C2410_GPC(5), 1);
+
+		s3c_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPB1_TOUT1);
+		gpio_direction_output(S3C2410_GPC(7), 1);
+
+		for (i = 1; i < 5; i++)
+			s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
+
+		for (i = 11; i < 16; i++)
+			s3c_gpio_cfgpin(S3C2410_GPC(i), S3C_GPIO_SFN(2));
+
+		for (i = 2; i < 8; i++)
+			s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
+
+		for (i = 11; i < 16; i++)
+			s3c_gpio_cfgpin(S3C2410_GPD(i), S3C_GPIO_SFN(2));
+
+		gpio_direction_output(S3C2410_GPC(10), 1);
+		gpio_direction_output(S3C2410_GPC(6), 1);
+	}
+	enabled = enable;
+}
+
+static void rx1950_bl_power(int enable)
+{
+	static int enabled;
+	if (enabled == enable)
+		return;
+	if (!enable) {
+			gpio_direction_output(S3C2410_GPB(0), 0);
+	} else {
+			/* LED driver need a "push" to power on */
+			gpio_direction_output(S3C2410_GPB(0), 1);
+			/* Warm up backlight for one period of PWM.
+			 * Without this trick its almost impossible to
+			 * enable backlight with low brightness value
+			 */
+			ndelay(48000);
+			s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
+	}
+	enabled = enable;
+}
+
+static int rx1950_backlight_init(struct device *dev)
+{
+	WARN_ON(gpio_request(S3C2410_GPB(0), "Backlight"));
+	lcd_pwm = pwm_request(1, "RX1950 LCD");
+	if (IS_ERR(lcd_pwm)) {
+		dev_err(dev, "Unable to request PWM for LCD power!\n");
+		return PTR_ERR(lcd_pwm);
+	}
+
+	rx1950_lcd_power(1);
+	rx1950_bl_power(1);
+
+	return 0;
+}
+
+static void rx1950_backlight_exit(struct device *dev)
+{
+	rx1950_bl_power(0);
+	rx1950_lcd_power(0);
+
+	pwm_free(lcd_pwm);
+	gpio_free(S3C2410_GPB(0));
+}
+
+
+static int rx1950_backlight_notify(struct device *dev, int brightness)
+{
+	if (!brightness) {
+		rx1950_bl_power(0);
+		rx1950_lcd_power(0);
+	} else {
+		rx1950_lcd_power(1);
+		rx1950_bl_power(1);
+	}
+	return brightness;
+}
+
+static struct platform_pwm_backlight_data rx1950_backlight_data = {
+	.pwm_id = 0,
+	.max_brightness = 24,
+	.dft_brightness = 4,
+	.pwm_period_ns = 48000,
+	.init = rx1950_backlight_init,
+	.notify = rx1950_backlight_notify,
+	.exit = rx1950_backlight_exit,
+};
+
+static struct platform_device rx1950_backlight = {
+	.name = "pwm-backlight",
+	.dev = {
+		.parent = &s3c_device_timer[0].dev,
+		.platform_data = &rx1950_backlight_data,
+	},
+};
+
+static void rx1950_set_mmc_power(unsigned char power_mode, unsigned short vdd)
+{
+	switch (power_mode) {
+	case MMC_POWER_OFF:
+		gpio_direction_output(S3C2410_GPJ(1), 0);
+		break;
+	case MMC_POWER_UP:
+	case MMC_POWER_ON:
+		gpio_direction_output(S3C2410_GPJ(1), 1);
+		break;
+	default:
+		break;
+	}
+}
+
+static struct s3c24xx_mci_pdata rx1950_mmc_cfg __initdata = {
+	.gpio_detect = S3C2410_GPF(5),
+	.gpio_wprotect = S3C2410_GPH(8),
+	.set_power = rx1950_set_mmc_power,
+	.ocr_avail = MMC_VDD_32_33,
+};
+
+static struct mtd_partition rx1950_nand_part[] = {
+	[0] = {
+			.name = "Boot0",
+			.offset = 0,
+			.size = 0x4000,
+			.mask_flags = MTD_WRITEABLE,
+	},
+	[1] = {
+			.name = "Boot1",
+			.offset = MTDPART_OFS_APPEND,
+			.size = 0x40000,
+			.mask_flags = MTD_WRITEABLE,
+	},
+	[2] = {
+			.name = "Kernel",
+			.offset = MTDPART_OFS_APPEND,
+			.size = 0x300000,
+			.mask_flags = 0,
+	},
+	[3] = {
+			.name = "Filesystem",
+			.offset = MTDPART_OFS_APPEND,
+			.size = MTDPART_SIZ_FULL,
+			.mask_flags = 0,
+	},
+};
+
+static struct s3c2410_nand_set rx1950_nand_sets[] = {
+	[0] = {
+			.name = "Internal",
+			.nr_chips = 1,
+			.nr_partitions = ARRAY_SIZE(rx1950_nand_part),
+			.partitions = rx1950_nand_part,
+	},
+};
+
+static struct s3c2410_platform_nand rx1950_nand_info = {
+	.tacls = 25,
+	.twrph0 = 50,
+	.twrph1 = 15,
+	.nr_sets = ARRAY_SIZE(rx1950_nand_sets),
+	.sets = rx1950_nand_sets,
+};
+
+static void rx1950_udc_pullup(enum s3c2410_udc_cmd_e cmd)
+{
+	switch (cmd) {
+	case S3C2410_UDC_P_ENABLE:
+		gpio_direction_output(S3C2410_GPJ(5), 1);
+		break;
+	case S3C2410_UDC_P_DISABLE:
+		gpio_direction_output(S3C2410_GPJ(5), 0);
+		break;
+	case S3C2410_UDC_P_RESET:
+		break;
+	default:
+		break;
+	}
+}
+
+static struct s3c2410_udc_mach_info rx1950_udc_cfg __initdata = {
+	.udc_command = rx1950_udc_pullup,
+	.vbus_pin = S3C2410_GPG(5),
+	.vbus_pin_inverted = 1,
+};
+
+static struct s3c2410_ts_mach_info rx1950_ts_cfg __initdata = {
+	.delay = 10000,
+	.presc = 49,
+	.oversampling_shift = 3,
+};
+
+static struct gpio_keys_button rx1950_gpio_keys_table[] = {
+	{
+		.code		= KEY_POWER,
+		.gpio		= S3C2410_GPF(0),
+		.active_low	= 1,
+		.desc		= "Power button",
+		.wakeup		= 1,
+	},
+	{
+		.code		= KEY_F5,
+		.gpio		= S3C2410_GPF(7),
+		.active_low	= 1,
+		.desc		= "Record button",
+	},
+	{
+		.code		= KEY_F1,
+		.gpio		= S3C2410_GPG(0),
+		.active_low	= 1,
+		.desc		= "Calendar button",
+	},
+	{
+		.code		= KEY_F2,
+		.gpio		= S3C2410_GPG(2),
+		.active_low	= 1,
+		.desc		= "Contacts button",
+	},
+	{
+		.code		= KEY_F3,
+		.gpio		= S3C2410_GPG(3),
+		.active_low	= 1,
+		.desc		= "Mail button",
+	},
+	{
+		.code		= KEY_F4,
+		.gpio		= S3C2410_GPG(7),
+		.active_low	= 1,
+		.desc		= "WLAN button",
+	},
+	{
+		.code		= KEY_LEFT,
+		.gpio		= S3C2410_GPG(10),
+		.active_low	= 1,
+		.desc		= "Left button",
+	},
+	{
+		.code		= KEY_RIGHT,
+		.gpio		= S3C2410_GPG(11),
+		.active_low	= 1,
+		.desc		= "Right button",
+	},
+	{
+		.code		= KEY_UP,
+		.gpio		= S3C2410_GPG(4),
+		.active_low	= 1,
+		.desc		= "Up button",
+	},
+	{
+		.code		= KEY_DOWN,
+		.gpio		= S3C2410_GPG(6),
+		.active_low	= 1,
+		.desc		= "Down button",
+	},
+	{
+		.code		= KEY_ENTER,
+		.gpio		= S3C2410_GPG(9),
+		.active_low	= 1,
+		.desc		= "Ok button"
+	},
+};
+
+static struct gpio_keys_platform_data rx1950_gpio_keys_data = {
+	.buttons = rx1950_gpio_keys_table,
+	.nbuttons = ARRAY_SIZE(rx1950_gpio_keys_table),
+};
+
+static struct platform_device rx1950_device_gpiokeys = {
+	.name = "gpio-keys",
+	.dev.platform_data = &rx1950_gpio_keys_data,
+};
+
+static struct s3c2410_platform_i2c rx1950_i2c_data = {
+	.flags = 0,
+	.slave_addr = 0x42,
+	.frequency = 400 * 1000,
+	.sda_delay = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
+};
+
+static struct platform_device *rx1950_devices[] __initdata = {
+	&s3c_device_lcd,
+	&s3c_device_wdt,
+	&s3c_device_i2c0,
+	&s3c_device_iis,
+	&s3c_device_usbgadget,
+	&s3c_device_rtc,
+	&s3c_device_nand,
+	&s3c_device_sdi,
+	&s3c_device_adc,
+	&s3c_device_ts,
+	&s3c_device_timer[0],
+	&s3c_device_timer[1],
+	&rx1950_backlight,
+	&rx1950_device_gpiokeys,
+};
+
+static struct clk *rx1950_clocks[] __initdata = {
+	&s3c24xx_clkout0,
+	&s3c24xx_clkout1,
+};
+
+static void __init rx1950_map_io(void)
+{
+	s3c24xx_clkout0.parent  = &clk_h;
+	s3c24xx_clkout1.parent  = &clk_f;
+
+	s3c24xx_register_clocks(rx1950_clocks, ARRAY_SIZE(rx1950_clocks));
+
+	s3c24xx_init_io(rx1950_iodesc, ARRAY_SIZE(rx1950_iodesc));
+	s3c24xx_init_clocks(16934000);
+	s3c24xx_init_uarts(rx1950_uartcfgs, ARRAY_SIZE(rx1950_uartcfgs));
+
+	/* setup PM */
+
+#ifdef CONFIG_PM_H1940
+	memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 8);
+#endif
+
+	s3c_pm_init();
+}
+
+static void __init rx1950_init_machine(void)
+{
+	int i;
+
+	s3c24xx_fb_set_platdata(&rx1950_lcd_cfg);
+	s3c24xx_udc_set_platdata(&rx1950_udc_cfg);
+	s3c24xx_ts_set_platdata(&rx1950_ts_cfg);
+	s3c24xx_mci_set_platdata(&rx1950_mmc_cfg);
+	s3c_i2c0_set_platdata(&rx1950_i2c_data);
+	s3c_nand_set_platdata(&rx1950_nand_info);
+
+	/* 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);
+
+	WARN_ON(gpio_request(S3C2410_GPJ(5), "UDC pullup"));
+	gpio_direction_output(S3C2410_GPJ(5), 0);
+
+	/* mmc power is disabled by default */
+	WARN_ON(gpio_request(S3C2410_GPJ(1), "MMC power"));
+	gpio_direction_output(S3C2410_GPJ(1), 0);
+
+	for (i = 0; i < 8; i++)
+		WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
+
+	for (i = 10; i < 16; i++)
+		WARN_ON(gpio_request(S3C2410_GPC(i), "LCD power"));
+
+	for (i = 2; i < 8; i++)
+		WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
+
+	for (i = 11; i < 16; i++)
+		WARN_ON(gpio_request(S3C2410_GPD(i), "LCD power"));
+
+	WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power"));
+
+	platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
+}
+
+MACHINE_START(RX1950, "HP iPAQ RX1950")
+    /* Maintainers: Vasily Khoruzhick */
+    .phys_io = S3C2410_PA_UART,
+	.io_pg_offst = (((u32) S3C24XX_VA_UART) >> 18) & 0xfffc,
+	.boot_params = S3C2410_SDRAM_PA + 0x100,
+	.map_io = rx1950_map_io,
+	.init_irq = s3c24xx_init_irq,
+	.init_machine = rx1950_init_machine,
+	.timer = &s3c24xx_timer,
+MACHINE_END