[PATCH 7/9] omap3: Board file of Always Innovating OMAP3-based Touch Book

[Tony Lindgren <tony@atomide.com>]

From: Gregoire Gentil <gregoire@gentil.com>

Board file of Always Innovating OMAP3-based Touch Book

Signed-off-by: Gregoire Gentil <gregoire@gentil.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/mach-omap2/Kconfig                |    5 
 arch/arm/mach-omap2/Makefile               |    3 
 arch/arm/mach-omap2/board-omap3touchbook.c |  572 ++++++++++++++++++++++++++++
 3 files changed, 579 insertions(+), 1 deletions(-)
 create mode 100644 arch/arm/mach-omap2/board-omap3touchbook.c

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index afa184a..2ea50bf 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -90,6 +90,11 @@ config MACH_OMAP3_PANDORA
 	depends on ARCH_OMAP3 && ARCH_OMAP34XX
 	select OMAP_PACKAGE_CBB
 
+config MACH_OMAP3_TOUCHBOOK
+	bool "OMAP3 Touch Book"
+	depends on ARCH_OMAP3 && ARCH_OMAP34XX
+	select BACKLIGHT_CLASS_DEVICE
+
 config MACH_OMAP_3430SDP
 	bool "OMAP 3430 SDP board"
 	depends on ARCH_OMAP3 && ARCH_OMAP34XX
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 1cc1d26..0c5d886 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -99,7 +99,8 @@ obj-$(CONFIG_MACH_CM_T35)		+= board-cm-t35.o \
 					   mmc-twl4030.o
 obj-$(CONFIG_MACH_IGEP0020)		+= board-igep0020.o \
 					   mmc-twl4030.o
-
+obj-$(CONFIG_MACH_OMAP3_TOUCHBOOK)	+= board-omap3touchbook.o \
+					   mmc-twl4030.o
 obj-$(CONFIG_MACH_OMAP_4430SDP)		+= board-4430sdp.o
 
 obj-$(CONFIG_MACH_OMAP3517EVM)     += board-am3517evm.o
diff --git a/arch/arm/mach-omap2/board-omap3touchbook.c b/arch/arm/mach-omap2/board-omap3touchbook.c
new file mode 100644
index 0000000..c9e5ebb
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3touchbook.c
@@ -0,0 +1,572 @@
+/*
+ * linux/arch/arm/mach-omap2/board-omap3touchbook.c
+ *
+ * Copyright (C) 2009 Always Innovating
+ *
+ * Modified from mach-omap2/board-omap3beagleboard.c
+ *
+ * Initial code: Grégoire Gentil, Tim Yamin
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
+
+#include <plat/mcspi.h>
+#include <linux/spi/spi.h>
+
+#include <linux/spi/ads7846.h>
+
+#include <linux/regulator/machine.h>
+#include <linux/i2c/twl4030.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <plat/board.h>
+#include <plat/common.h>
+#include <plat/gpmc.h>
+#include <plat/nand.h>
+#include <plat/usb.h>
+#include <plat/timer-gp.h>
+
+#include "mux.h"
+#include "mmc-twl4030.h"
+
+#include <asm/setup.h>
+
+#define GPMC_CS0_BASE  0x60
+#define GPMC_CS_SIZE   0x30
+
+#define NAND_BLOCK_SIZE		SZ_128K
+
+#define OMAP3_AC_GPIO		136
+#define OMAP3_TS_GPIO		162
+#define TB_BL_PWM_TIMER		9
+#define TB_KILL_POWER_GPIO	168
+
+unsigned long touchbook_revision;
+
+static struct mtd_partition omap3touchbook_nand_partitions[] = {
+	/* All the partition sizes are listed in terms of NAND block size */
+	{
+		.name		= "X-Loader",
+		.offset		= 0,
+		.size		= 4 * NAND_BLOCK_SIZE,
+		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
+	},
+	{
+		.name		= "U-Boot",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
+		.size		= 15 * NAND_BLOCK_SIZE,
+		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
+	},
+	{
+		.name		= "U-Boot Env",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
+		.size		= 1 * NAND_BLOCK_SIZE,
+	},
+	{
+		.name		= "Kernel",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
+		.size		= 32 * NAND_BLOCK_SIZE,
+	},
+	{
+		.name		= "File System",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
+		.size		= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct omap_nand_platform_data omap3touchbook_nand_data = {
+	.options	= NAND_BUSWIDTH_16,
+	.parts		= omap3touchbook_nand_partitions,
+	.nr_parts	= ARRAY_SIZE(omap3touchbook_nand_partitions),
+	.dma_channel	= -1,		/* disable DMA in OMAP NAND driver */
+	.nand_setup	= NULL,
+	.dev_ready	= NULL,
+};
+
+static struct resource omap3touchbook_nand_resource = {
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device omap3touchbook_nand_device = {
+	.name		= "omap2-nand",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &omap3touchbook_nand_data,
+	},
+	.num_resources	= 1,
+	.resource	= &omap3touchbook_nand_resource,
+};
+
+#include "sdram-micron-mt46h32m32lf-6.h"
+
+static struct twl4030_hsmmc_info mmc[] = {
+	{
+		.mmc		= 1,
+		.wires		= 8,
+		.gpio_wp	= 29,
+	},
+	{}	/* Terminator */
+};
+
+static struct platform_device omap3_touchbook_lcd_device = {
+	.name		= "omap3touchbook_lcd",
+	.id		= -1,
+};
+
+static struct omap_lcd_config omap3_touchbook_lcd_config __initdata = {
+	.ctrl_name	= "internal",
+};
+
+static struct regulator_consumer_supply touchbook_vmmc1_supply = {
+	.supply			= "vmmc",
+};
+
+static struct regulator_consumer_supply touchbook_vsim_supply = {
+	.supply			= "vmmc_aux",
+};
+
+static struct gpio_led gpio_leds[];
+
+static int touchbook_twl_gpio_setup(struct device *dev,
+		unsigned gpio, unsigned ngpio)
+{
+	if (system_rev >= 0x20 && system_rev <= 0x34301000) {
+		omap_mux_init_gpio(23, OMAP_PIN_INPUT);
+		mmc[0].gpio_wp = 23;
+	} else {
+		omap_mux_init_gpio(29, OMAP_PIN_INPUT);
+	}
+	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
+	mmc[0].gpio_cd = gpio + 0;
+	twl4030_mmc_init(mmc);
+
+	/* link regulators to MMC adapters */
+	touchbook_vmmc1_supply.dev = mmc[0].dev;
+	touchbook_vsim_supply.dev = mmc[0].dev;
+
+	/* REVISIT: need ehci-omap hooks for external VBUS
+	 * power switch and overcurrent detect
+	 */
+
+	gpio_request(gpio + 1, "EHCI_nOC");
+	gpio_direction_input(gpio + 1);
+
+	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
+	gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
+	gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
+
+	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
+	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
+
+	return 0;
+}
+
+static struct twl4030_gpio_platform_data touchbook_gpio_data = {
+	.gpio_base	= OMAP_MAX_GPIO_LINES,
+	.irq_base	= TWL4030_GPIO_IRQ_BASE,
+	.irq_end	= TWL4030_GPIO_IRQ_END,
+	.use_leds	= true,
+	.pullups	= BIT(1),
+	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
+				| BIT(15) | BIT(16) | BIT(17),
+	.setup		= touchbook_twl_gpio_setup,
+};
+
+static struct regulator_consumer_supply touchbook_vdac_supply = {
+	.supply		= "vdac",
+	.dev		= &omap3_touchbook_lcd_device.dev,
+};
+
+static struct regulator_consumer_supply touchbook_vdvi_supply = {
+	.supply		= "vdvi",
+	.dev		= &omap3_touchbook_lcd_device.dev,
+};
+
+/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
+static struct regulator_init_data touchbook_vmmc1 = {
+	.constraints = {
+		.min_uV			= 1850000,
+		.max_uV			= 3150000,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
+					| REGULATOR_CHANGE_MODE
+					| REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= 1,
+	.consumer_supplies	= &touchbook_vmmc1_supply,
+};
+
+/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
+static struct regulator_init_data touchbook_vsim = {
+	.constraints = {
+		.min_uV			= 1800000,
+		.max_uV			= 3000000,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
+					| REGULATOR_CHANGE_MODE
+					| REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= 1,
+	.consumer_supplies	= &touchbook_vsim_supply,
+};
+
+/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
+static struct regulator_init_data touchbook_vdac = {
+	.constraints = {
+		.min_uV			= 1800000,
+		.max_uV			= 1800000,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_MODE
+					| REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= 1,
+	.consumer_supplies	= &touchbook_vdac_supply,
+};
+
+/* VPLL2 for digital video outputs */
+static struct regulator_init_data touchbook_vpll2 = {
+	.constraints = {
+		.name			= "VDVI",
+		.min_uV			= 1800000,
+		.max_uV			= 1800000,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_MODE
+					| REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= 1,
+	.consumer_supplies	= &touchbook_vdvi_supply,
+};
+
+static struct twl4030_usb_data touchbook_usb_data = {
+	.usb_mode	= T2_USB_MODE_ULPI,
+};
+
+static struct twl4030_codec_audio_data touchbook_audio_data = {
+	.audio_mclk = 26000000,
+};
+
+static struct twl4030_codec_data touchbook_codec_data = {
+	.audio_mclk = 26000000,
+	.audio = &touchbook_audio_data,
+};
+
+static struct twl4030_platform_data touchbook_twldata = {
+	.irq_base	= TWL4030_IRQ_BASE,
+	.irq_end	= TWL4030_IRQ_END,
+
+	/* platform_data for children goes here */
+	.usb		= &touchbook_usb_data,
+	.gpio		= &touchbook_gpio_data,
+	.codec		= &touchbook_codec_data,
+	.vmmc1		= &touchbook_vmmc1,
+	.vsim		= &touchbook_vsim,
+	.vdac		= &touchbook_vdac,
+	.vpll2		= &touchbook_vpll2,
+};
+
+static struct i2c_board_info __initdata touchbook_i2c_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("twl4030", 0x48),
+		.flags = I2C_CLIENT_WAKE,
+		.irq = INT_34XX_SYS_NIRQ,
+		.platform_data = &touchbook_twldata,
+	},
+};
+
+static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("bq27200", 0x55),
+	},
+};
+
+static int __init omap3_touchbook_i2c_init(void)
+{
+	/* Standard TouchBook bus */
+	omap_register_i2c_bus(1, 2600, touchbook_i2c_boardinfo,
+			ARRAY_SIZE(touchbook_i2c_boardinfo));
+
+	/* Additional TouchBook bus */
+	omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
+			ARRAY_SIZE(touchBook_i2c_boardinfo));
+
+	return 0;
+}
+
+static void __init omap3_ads7846_init(void)
+{
+	if (gpio_request(OMAP3_TS_GPIO, "ads7846_pen_down")) {
+		printk(KERN_ERR "Failed to request GPIO %d for "
+				"ads7846 pen down IRQ\n", OMAP3_TS_GPIO);
+		return;
+	}
+
+	gpio_direction_input(OMAP3_TS_GPIO);
+	omap_set_gpio_debounce(OMAP3_TS_GPIO, 1);
+	omap_set_gpio_debounce_time(OMAP3_TS_GPIO, 0xa);
+}
+
+static struct ads7846_platform_data ads7846_config = {
+	.x_min			= 100,
+	.y_min			= 265,
+	.x_max			= 3950,
+	.y_max			= 3750,
+	.x_plate_ohms		= 40,
+	.pressure_max		= 255,
+	.debounce_max		= 10,
+	.debounce_tol		= 5,
+	.debounce_rep		= 1,
+	.gpio_pendown		= OMAP3_TS_GPIO,
+	.keep_vref_on		= 1,
+};
+
+static struct omap2_mcspi_device_config ads7846_mcspi_config = {
+	.turbo_mode	= 0,
+	.single_channel	= 1,	/* 0: slave, 1: master */
+};
+
+static struct spi_board_info omap3_ads7846_spi_board_info[] __initdata = {
+	{
+		.modalias		= "ads7846",
+		.bus_num		= 4,
+		.chip_select		= 0,
+		.max_speed_hz		= 1500000,
+		.controller_data	= &ads7846_mcspi_config,
+		.irq			= OMAP_GPIO_IRQ(OMAP3_TS_GPIO),
+		.platform_data		= &ads7846_config,
+	}
+};
+
+static struct gpio_led gpio_leds[] = {
+	{
+		.name			= "touchbook::usr0",
+		.default_trigger	= "heartbeat",
+		.gpio			= 150,
+	},
+	{
+		.name			= "touchbook::usr1",
+		.default_trigger	= "mmc0",
+		.gpio			= 149,
+	},
+	{
+		.name			= "touchbook::pmu_stat",
+		.gpio			= -EINVAL,	/* gets replaced */
+		.active_low		= true,
+	},
+};
+
+static struct gpio_led_platform_data gpio_led_info = {
+	.leds		= gpio_leds,
+	.num_leds	= ARRAY_SIZE(gpio_leds),
+};
+
+static struct platform_device leds_gpio = {
+	.name	= "leds-gpio",
+	.id	= -1,
+	.dev	= {
+		.platform_data	= &gpio_led_info,
+	},
+};
+
+static struct gpio_keys_button gpio_buttons[] = {
+	{
+		.code			= BTN_EXTRA,
+		.gpio			= 7,
+		.desc			= "user",
+		.wakeup			= 1,
+	},
+	{
+		.code			= KEY_POWER,
+		.gpio			= 183,
+		.desc			= "power",
+		.wakeup			= 1,
+	},
+};
+
+static struct gpio_keys_platform_data gpio_key_info = {
+	.buttons	= gpio_buttons,
+	.nbuttons	= ARRAY_SIZE(gpio_buttons),
+};
+
+static struct platform_device keys_gpio = {
+	.name	= "gpio-keys",
+	.id	= -1,
+	.dev	= {
+		.platform_data	= &gpio_key_info,
+	},
+};
+
+static struct omap_board_config_kernel omap3_touchbook_config[] __initdata = {
+	{ OMAP_TAG_LCD,		&omap3_touchbook_lcd_config },
+};
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#else
+#define board_mux	NULL
+#endif
+
+static void __init omap3_touchbook_init_irq(void)
+{
+	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+	omap_board_config = omap3_touchbook_config;
+	omap_board_config_size = ARRAY_SIZE(omap3_touchbook_config);
+	omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
+			     mt46h32m32lf6_sdrc_params);
+	omap_init_irq();
+#ifdef CONFIG_OMAP_32K_TIMER
+	omap2_gp_clockevent_set_gptimer(12);
+#endif
+	omap_gpio_init();
+}
+
+static struct platform_device *omap3_touchbook_devices[] __initdata = {
+	&omap3_touchbook_lcd_device,
+	&leds_gpio,
+	&keys_gpio,
+};
+
+static void __init omap3touchbook_flash_init(void)
+{
+	u8 cs = 0;
+	u8 nandcs = GPMC_CS_NUM + 1;
+
+	u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
+
+	/* find out the chip-select on which NAND exists */
+	while (cs < GPMC_CS_NUM) {
+		u32 ret = 0;
+		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
+
+		if ((ret & 0xC00) == 0x800) {
+			printk(KERN_INFO "Found NAND on CS%d\n", cs);
+			if (nandcs > GPMC_CS_NUM)
+				nandcs = cs;
+		}
+		cs++;
+	}
+
+	if (nandcs > GPMC_CS_NUM) {
+		printk(KERN_INFO "NAND: Unable to find configuration "
+				 "in GPMC\n ");
+		return;
+	}
+
+	if (nandcs < GPMC_CS_NUM) {
+		omap3touchbook_nand_data.cs = nandcs;
+		omap3touchbook_nand_data.gpmc_cs_baseaddr = (void *)
+			(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
+		omap3touchbook_nand_data.gpmc_baseaddr =
+						(void *) (gpmc_base_add);
+
+		printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
+		if (platform_device_register(&omap3touchbook_nand_device) < 0)
+			printk(KERN_ERR "Unable to register NAND device\n");
+	}
+}
+
+static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
+
+	.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
+	.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
+	.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
+
+	.phy_reset  = true,
+	.reset_gpio_port[0]  = -EINVAL,
+	.reset_gpio_port[1]  = 147,
+	.reset_gpio_port[2]  = -EINVAL
+};
+
+static void omap3_touchbook_poweroff(void)
+{
+	int r;
+
+	r = gpio_request(TB_KILL_POWER_GPIO, "DVI reset");
+	if (r < 0) {
+		printk(KERN_ERR "Unable to get kill power GPIO\n");
+		return;
+	}
+
+	gpio_direction_output(TB_KILL_POWER_GPIO, 0);
+}
+
+static void __init early_touchbook_revision(char **p)
+{
+	if (!*p)
+		return;
+
+	strict_strtoul(*p, 10, &touchbook_revision);
+}
+__early_param("tbr=", early_touchbook_revision);
+
+static void __init omap3_touchbook_init(void)
+{
+	pm_power_off = omap3_touchbook_poweroff;
+
+	omap3_touchbook_i2c_init();
+	platform_add_devices(omap3_touchbook_devices,
+			ARRAY_SIZE(omap3_touchbook_devices));
+	omap_serial_init();
+
+	omap_mux_init_gpio(170, OMAP_PIN_INPUT);
+	gpio_request(176, "DVI_nPD");
+	/* REVISIT leave DVI powered down until it's needed ... */
+	gpio_direction_output(176, true);
+
+	/* Touchscreen and accelerometer */
+	spi_register_board_info(omap3_ads7846_spi_board_info,
+				ARRAY_SIZE(omap3_ads7846_spi_board_info));
+	omap3_ads7846_init();
+	usb_musb_init();
+	usb_ehci_init(&ehci_pdata);
+	omap3touchbook_flash_init();
+
+	/* Ensure SDRC pins are mux'd for self-refresh */
+	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
+	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
+}
+
+static void __init omap3_touchbook_map_io(void)
+{
+	omap2_set_globals_343x();
+	omap2_map_common_io();
+}
+
+MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
+	/* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
+	.phys_io	= 0x48000000,
+	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
+	.boot_params	= 0x80000100,
+	.map_io		= omap3_touchbook_map_io,
+	.init_irq	= omap3_touchbook_init_irq,
+	.init_machine	= omap3_touchbook_init,
+	.timer		= &omap_timer,
+MACHINE_END

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