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 7f465265cf04..a6c5df6d41ef 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 c85ba32d8956..d5440fa34b04 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 000000000000..8603b577a24b
--- /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