ARM: S3C64XX: Initial support for Wolfson/Simtec Cragganmore/Banff

The Cragganmore carrier card and Banff CPU module are used on Wolfson
Microelectronics reference systems.  This initial support covers the
core system which is a fairly generic S3C6410 based design, further
patches will add support for the key features of the reference system.

The initial board bringup and therefore much of the key code was done by
Ben Dooks for Simtec, with additional work (especially around the
integration of the Wolfson devices) being done by myself.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
[kgene.kim@samsung.com: removed inclusion of <mach/regs-fb.h>]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 574 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
new file mode 100644
index 00000000000..97077536370
--- /dev/null
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -0,0 +1,574 @@
+/* linux/arch/arm/mach-s3c64xx/mach-crag6410.c
+ *
+ * Copyright 2011 Wolfson Microelectronics plc
+ *	Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * Copyright 2011 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * 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/list.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/fb.h>
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/regulator/machine.h>
+#include <linux/pwm_backlight.h>
+#include <linux/dm9000.h>
+#include <linux/gpio_keys.h>
+#include <linux/basic_mmio_gpio.h>
+#include <linux/spi/spi.h>
+
+#include <linux/i2c/pca953x.h>
+
+#include <video/platform_lcd.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/pdata.h>
+#include <linux/mfd/wm831x/gpio.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+
+#include <mach/hardware.h>
+#include <mach/map.h>
+
+#include <mach/s3c6410.h>
+#include <mach/regs-sys.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-modem.h>
+
+#include <mach/gpio-bank-o.h>
+#include <mach/regs-gpio-memport.h>
+
+#include <plat/regs-serial.h>
+#include <plat/regs-fb-v4.h>
+#include <plat/fb.h>
+#include <plat/sdhci.h>
+#include <plat/gpio-cfg.h>
+#include <plat/s3c64xx-spi.h>
+
+#include <plat/keypad.h>
+#include <plat/clock.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/adc.h>
+#include <plat/iic.h>
+#include <plat/pm.h>
+
+#define BANFF_PMIC_IRQ_BASE IRQ_BOARD_START
+
+#define PCA935X_GPIO_BASE GPIO_BOARD_START
+#define CODEC_GPIO_BASE (GPIO_BOARD_START + 8)
+
+/* serial port setup */
+
+#define UCON (S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK)
+#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
+#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
+
+static struct s3c2410_uartcfg crag6410_uartcfgs[] __initdata = {
+	[0] = {
+		.hwport	= 0,
+		.flags	= 0,
+		.ucon	= UCON,
+		.ulcon	= ULCON,
+		.ufcon	= UFCON,
+	},
+	[1] = {
+		.hwport	= 1,
+		.flags	= 0,
+		.ucon	= UCON,
+		.ulcon	= ULCON,
+		.ufcon	= UFCON,
+	},
+	[2] = {
+		.hwport	= 2,
+		.flags	= 0,
+		.ucon	= UCON,
+		.ulcon	= ULCON,
+		.ufcon	= UFCON,
+	},
+	[3] = {
+		.hwport	= 3,
+		.flags	= 0,
+		.ucon	= UCON,
+		.ulcon	= ULCON,
+		.ufcon	= UFCON,
+	},
+};
+
+static struct platform_pwm_backlight_data crag6410_backlight_data = {
+	.pwm_id		= 0,
+	.max_brightness	= 1000,
+	.dft_brightness	= 600,
+	.pwm_period_ns	= 100000,	/* about 1kHz */
+};
+
+static struct platform_device crag6410_backlight_device = {
+	.name		= "pwm-backlight",
+	.id		= -1,
+	.dev		= {
+		.parent	= &s3c_device_timer[0].dev,
+		.platform_data = &crag6410_backlight_data,
+	},
+};
+
+static void crag6410_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
+{
+	pr_debug("%s: setting power %d\n", __func__, power);
+
+	if (power) {
+		gpio_set_value(S3C64XX_GPB(0), 1);
+		msleep(1);
+		s3c_gpio_cfgpin(S3C64XX_GPF(14), S3C_GPIO_SFN(2));
+	} else {
+		gpio_direction_output(S3C64XX_GPF(14), 0);
+		gpio_set_value(S3C64XX_GPB(0), 0);
+	}
+}
+
+static struct platform_device crag6410_lcd_powerdev = {
+	.name			= "platform-lcd",
+	.id			= -1,
+	.dev.parent		= &s3c_device_fb.dev,
+	.dev.platform_data	= &(struct plat_lcd_data) {
+		.set_power	= crag6410_lcd_power_set,
+	},
+};
+
+/* 640x480 URT */
+static struct s3c_fb_pd_win crag6410_fb_win0 = {
+	/* this is to ensure we use win0 */
+	.win_mode	= {
+		.left_margin	= 150,
+		.right_margin	= 80,
+		.upper_margin	= 40,
+		.lower_margin	= 5,
+		.hsync_len	= 40,
+		.vsync_len	= 5,
+		.xres		= 640,
+		.yres		= 480,
+	},
+	.max_bpp	= 32,
+	.default_bpp	= 16,
+	.virtual_y	= 480 * 2,
+	.virtual_x	= 640,
+};
+
+/* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
+static struct s3c_fb_platdata crag6410_lcd_pdata __initdata = {
+	.setup_gpio	= s3c64xx_fb_gpio_setup_24bpp,
+	.win[0]		= &crag6410_fb_win0,
+	.vidcon0	= VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
+	.vidcon1	= VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
+};
+
+/* 2x6 keypad */
+
+static uint32_t crag6410_keymap[] __initdata = {
+	/* KEY(row, col, keycode) */
+	KEY(0, 0, KEY_VOLUMEUP),
+	KEY(0, 1, KEY_HOME),
+	KEY(0, 2, KEY_VOLUMEDOWN),
+	KEY(0, 3, KEY_HELP),
+	KEY(0, 4, KEY_MENU),
+	KEY(0, 5, KEY_MEDIA),
+	KEY(1, 0, 232),
+	KEY(1, 1, KEY_DOWN),
+	KEY(1, 2, KEY_LEFT),
+	KEY(1, 3, KEY_UP),
+	KEY(1, 4, KEY_RIGHT),
+	KEY(1, 5, KEY_CAMERA),
+};
+
+static struct matrix_keymap_data crag6410_keymap_data __initdata = {
+	.keymap		= crag6410_keymap,
+	.keymap_size	= ARRAY_SIZE(crag6410_keymap),
+};
+
+static struct samsung_keypad_platdata crag6410_keypad_data __initdata = {
+	.keymap_data	= &crag6410_keymap_data,
+	.rows		= 2,
+	.cols		= 6,
+};
+
+static struct gpio_keys_button crag6410_gpio_keys[] = {
+	[0] = {
+		.code	= KEY_SUSPEND,
+		.gpio	= S3C64XX_GPL(10),	/* EINT 18 */
+		.type	= EV_SW,
+		.wakeup	= 1,
+		.active_low = 1,
+	},
+};
+
+static struct gpio_keys_platform_data crag6410_gpio_keydata = {
+	.buttons	= crag6410_gpio_keys,
+	.nbuttons	= ARRAY_SIZE(crag6410_gpio_keys),
+};
+
+static struct platform_device crag6410_gpio_keydev = {
+	.name		= "gpio-keys",
+	.id		= 0,
+	.dev.platform_data = &crag6410_gpio_keydata,
+};
+
+static struct resource crag6410_dm9k_resource[] = {
+	[0] = {
+		.start	= S3C64XX_PA_XM0CSN5,
+		.end	= S3C64XX_PA_XM0CSN5 + 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= S3C64XX_PA_XM0CSN5 + (1 << 8),
+		.end	= S3C64XX_PA_XM0CSN5 + (1 << 8) + 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[2] = {
+		.start	= S3C_EINT(17),
+		.end	= S3C_EINT(17),
+		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
+	},
+};
+
+static struct dm9000_plat_data mini6410_dm9k_pdata = {
+	.flags	= DM9000_PLATF_16BITONLY,
+};
+
+static struct platform_device crag6410_dm9k_device = {
+	.name		= "dm9000",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(crag6410_dm9k_resource),
+	.resource	= crag6410_dm9k_resource,
+	.dev.platform_data = &mini6410_dm9k_pdata,
+};
+
+static struct resource crag6410_mmgpio_resource[] = {
+	[0] = {
+		.start	= S3C64XX_PA_XM0CSN4 + 1,
+		.end	= S3C64XX_PA_XM0CSN4 + 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device crag6410_mmgpio = {
+	.name		= "basic-mmio-gpio",
+	.id		= -1,
+	.resource	= crag6410_mmgpio_resource,
+	.num_resources	= ARRAY_SIZE(crag6410_mmgpio_resource),
+	.dev.platform_data = &(struct bgpio_pdata) {
+		.base	= -1,
+	},
+};
+
+static struct platform_device *crag6410_devices[] __initdata = {
+	&s3c_device_hsmmc0,
+	&s3c_device_hsmmc1,
+	&s3c_device_hsmmc2,
+	&s3c_device_i2c0,
+	&s3c_device_i2c1,
+	&s3c_device_fb,
+	&s3c_device_ohci,
+	&s3c_device_usb_hsotg,
+	&s3c_device_adc,
+	&s3c_device_rtc,
+	&s3c_device_ts,
+	&s3c_device_timer[0],
+	&s3c64xx_device_iis0,
+	&s3c64xx_device_iis1,
+	&samsung_asoc_dma,
+	&samsung_device_keypad,
+	&crag6410_gpio_keydev,
+	&crag6410_dm9k_device,
+	&s3c64xx_device_spi0,
+	&crag6410_mmgpio,
+	&crag6410_lcd_powerdev,
+	&crag6410_backlight_device,
+};
+
+static struct pca953x_platform_data crag6410_pca_data = {
+	.gpio_base	= PCA935X_GPIO_BASE,
+	.irq_base	= 0,
+};
+
+static struct regulator_consumer_supply vddarm_consumers[] __initdata = {
+	REGULATOR_SUPPLY("vddarm", NULL),
+};
+
+static struct regulator_init_data vddarm __initdata = {
+	.constraints = {
+		.name = "VDDARM",
+		.min_uV = 1000000,
+		.max_uV = 1300000,
+		.always_on = 1,
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(vddarm_consumers),
+	.consumer_supplies = vddarm_consumers,
+};
+
+static struct regulator_init_data vddint __initdata = {
+	.constraints = {
+		.name = "VDDINT",
+		.min_uV = 1000000,
+		.max_uV = 1200000,
+		.always_on = 1,
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+	},
+};
+
+static struct regulator_init_data vddmem __initdata = {
+	.constraints = {
+		.name = "VDDMEM",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddsys __initdata = {
+	.constraints = {
+		.name = "VDDSYS,VDDEXT,VDDPCM,VDDSS",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_consumer_supply vddmmc_consumers[] __initdata = {
+	REGULATOR_SUPPLY("vmmc", "s3c-sdhci.0"),
+	REGULATOR_SUPPLY("vmmc", "s3c-sdhci.1"),
+	REGULATOR_SUPPLY("vmmc", "s3c-sdhci.2"),
+};
+
+static struct regulator_init_data vddmmc __initdata = {
+	.constraints = {
+		.name = "VDDMMC,UH",
+		.always_on = 1,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(vddmmc_consumers),
+	.consumer_supplies = vddmmc_consumers,
+};
+
+static struct regulator_init_data vddotgi __initdata = {
+	.constraints = {
+		.name = "VDDOTGi",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddotg __initdata = {
+	.constraints = {
+		.name = "VDDOTG",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddhi __initdata = {
+	.constraints = {
+		.name = "VDDHI",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddadc __initdata = {
+	.constraints = {
+		.name = "VDDADC,VDDDAC",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddmem0 __initdata = {
+	.constraints = {
+		.name = "VDDMEM0",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddpll __initdata = {
+	.constraints = {
+		.name = "VDDPLL",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddlcd __initdata = {
+	.constraints = {
+		.name = "VDDLCD",
+		.always_on = 1,
+	},
+};
+
+static struct regulator_init_data vddalive __initdata = {
+	.constraints = {
+		.name = "VDDALIVE",
+		.always_on = 1,
+	},
+};
+
+static struct wm831x_status_pdata banff_red_led __initdata = {
+	.name = "banff:red:",
+	.default_src = WM831X_STATUS_MANUAL,
+};
+
+static struct wm831x_status_pdata banff_green_led __initdata = {
+	.name = "banff:green:",
+	.default_src = WM831X_STATUS_MANUAL,
+};
+
+static struct wm831x_touch_pdata touch_pdata __initdata = {
+	.data_irq = S3C_EINT(26),
+};
+
+static __init int crag_pmic_pre_init(struct wm831x *wm831x)
+{
+	/* Touchscreen data IRQ - CMOS, DBVDD, active high*/
+	wm831x_reg_write(wm831x, WM831X_GPIO11_CONTROL,
+			 WM831X_GPN_POL | WM831X_GPN_ENA | 0x6);
+
+	/* Touchscreen pen down IRQ - CMOS, DBVDD, active high*/
+	wm831x_reg_write(wm831x, WM831X_GPIO12_CONTROL,
+			 WM831X_GPN_POL | WM831X_GPN_ENA | 0x7);
+
+	return 0;
+}
+
+static struct wm831x_pdata crag_pmic_pdata __initdata = {
+	.pre_init = crag_pmic_pre_init,
+
+	.irq_base = BANFF_PMIC_IRQ_BASE,
+	.gpio_base = GPIO_BOARD_START + 8,
+
+	.dcdc = {
+		&vddarm,  /* DCDC1 */
+		&vddint,  /* DCDC2 */
+		&vddmem,  /* DCDC3 */
+	},
+
+	.ldo = {
+		&vddsys,   /* LDO1 */
+		&vddmmc,   /* LDO2 */
+		NULL,      /* LDO3 */
+		&vddotgi,  /* LDO4 */
+		&vddotg,   /* LDO5 */
+		&vddhi,    /* LDO6 */
+		&vddadc,   /* LDO7 */
+		&vddmem0,  /* LDO8 */
+		&vddpll,   /* LDO9 */
+		&vddlcd,   /* LDO10 */
+		&vddalive, /* LDO11 */
+	},
+
+	.status = {
+		&banff_green_led,
+		&banff_red_led,
+	},
+
+	.touch = &touch_pdata,
+};
+
+static struct i2c_board_info i2c_devs0[] __initdata = {
+	{ I2C_BOARD_INFO("24c08", 0x50), },
+	{ I2C_BOARD_INFO("tca6408", 0x20),
+	  .platform_data = &crag6410_pca_data,
+	},
+	{ I2C_BOARD_INFO("wm8312", 0x34),
+	  .platform_data = &crag_pmic_pdata,
+	  .irq = S3C_EINT(23),
+	},
+};
+
+static struct s3c2410_platform_i2c i2c0_pdata = {
+	.frequency = 400000,
+};
+
+static struct i2c_board_info i2c_devs1[] __initdata = {
+	{ I2C_BOARD_INFO("wm8311", 0x34),
+	  .platform_data = &glenfarclas_pmic_pdata,
+	},
+};
+
+static void __init crag6410_map_io(void)
+{
+	s3c64xx_init_io(NULL, 0);
+	s3c24xx_init_clocks(12000000);
+	s3c24xx_init_uarts(crag6410_uartcfgs, ARRAY_SIZE(crag6410_uartcfgs));
+
+	/* LCD type and Bypass set by bootloader */
+}
+
+static struct s3c_sdhci_platdata crag6410_hsmmc2_pdata = {
+	.max_width		= 4,
+	.cd_type		= S3C_SDHCI_CD_PERMANENT,
+};
+
+static struct s3c_sdhci_platdata crag6410_hsmmc1_pdata = {
+	.max_width		= 4,
+	.cd_type		= S3C_SDHCI_CD_GPIO,
+	.ext_cd_gpio		= S3C64XX_GPF(11),
+};
+
+static void crag6410_cfg_sdhci0(struct platform_device *dev, int width)
+{
+	/* Set all the necessary GPG pins to special-function 2 */
+	s3c_gpio_cfgrange_nopull(S3C64XX_GPG(0), 2 + width, S3C_GPIO_SFN(2));
+
+	/* force card-detected for prototype 0 */
+	s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_DOWN);
+}
+
+static struct s3c_sdhci_platdata crag6410_hsmmc0_pdata = {
+	.max_width		= 4,
+	.cd_type		= S3C_SDHCI_CD_INTERNAL,
+	.cfg_gpio		= crag6410_cfg_sdhci0,
+};
+
+static void __init crag6410_machine_init(void)
+{
+	/* Open drain IRQs need pullups */
+	s3c_gpio_setpull(S3C64XX_GPM(0), S3C_GPIO_PULL_UP);
+	s3c_gpio_setpull(S3C64XX_GPN(0), S3C_GPIO_PULL_UP);
+
+	gpio_request(S3C64XX_GPB(0), "LCD power");
+	gpio_direction_output(S3C64XX_GPB(0), 0);
+
+	gpio_request(S3C64XX_GPF(14), "LCD PWM");
+	gpio_direction_output(S3C64XX_GPF(14), 0);  /* turn off */
+
+	gpio_request(S3C64XX_GPB(1), "SD power");
+	gpio_direction_output(S3C64XX_GPB(1), 0);
+
+	gpio_request(S3C64XX_GPF(10), "nRESETSEL");
+	gpio_direction_output(S3C64XX_GPF(10), 1);
+
+	s3c_sdhci0_set_platdata(&crag6410_hsmmc0_pdata);
+	s3c_sdhci1_set_platdata(&crag6410_hsmmc1_pdata);
+	s3c_sdhci2_set_platdata(&crag6410_hsmmc2_pdata);
+
+	s3c_i2c0_set_platdata(&i2c0_pdata);
+	s3c_i2c1_set_platdata(NULL);
+	s3c_fb_set_platdata(&crag6410_lcd_pdata);
+
+	i2c_register_board_info(0, i2c_devs0, ARRAY_SIZE(i2c_devs0));
+	i2c_register_board_info(1, i2c_devs1, ARRAY_SIZE(i2c_devs1));
+
+	samsung_keypad_set_platdata(&crag6410_keypad_data);
+
+	platform_add_devices(crag6410_devices, ARRAY_SIZE(crag6410_devices));
+
+	s3c_pm_init();
+}
+
+MACHINE_START(WLF_CRAGG_6410, "Wolfson Cragganmore 6410")
+	/* Maintainer: Mark Brown <broonie@opensource.wolfsonmicro.com> */
+	.boot_params	= S3C64XX_PA_SDRAM + 0x100,
+	.init_irq	= s3c6410_init_irq,
+	.map_io		= crag6410_map_io,
+	.init_machine	= crag6410_machine_init,
+	.timer		= &s3c24xx_timer,
+MACHINE_END