[PATCH 1/3] Initial B&N Nook Color (encore) support.

[green@linuxhacker.ru]

From: Oleg Drokin <green@linuxhacker.ru>

Bare-bones board file, comes with serial console, gpio keys,
MMC/SDCard and USB (peripheral) support.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
 arch/arm/mach-omap2/Kconfig                  |    5 +
 arch/arm/mach-omap2/Makefile                 |    2 +
 arch/arm/mach-omap2/board-omap3encore.c      |  348 ++++++++++++++++++++++++++
 arch/arm/plat-omap/include/plat/uncompress.h |    1 +
 4 files changed, 356 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-omap2/board-omap3encore.c

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 19d5891..b525308 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -173,6 +173,11 @@ config MACH_OMAP3_TORPEDO
 	 for full description please see the products webpage at
 	 http://www.logicpd.com/products/development-kits/zoom-omap35x-torpedo-development-kit
 
+config MACH_ENCORE
+        bool "Barnes & Noble Encore (Nook Color)"
+        depends on ARCH_OMAP3
+        select OMAP_PACKAGE_CBP
+
 config MACH_OVERO
 	bool "Gumstix Overo board"
 	depends on ARCH_OMAP3
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index b148077..8fe635c 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -189,6 +189,8 @@ obj-$(CONFIG_MACH_OMAP3530_LV_SOM)      += board-omap3logic.o \
 					   hsmmc.o
 obj-$(CONFIG_MACH_OMAP3_TORPEDO)        += board-omap3logic.o \
 					   hsmmc.o
+obj-$(CONFIG_MACH_ENCORE)		+= board-omap3encore.o \
+					   hsmmc.o
 obj-$(CONFIG_MACH_OVERO)		+= board-overo.o \
 					   hsmmc.o
 obj-$(CONFIG_MACH_OMAP3EVM)		+= board-omap3evm.o \
diff --git a/arch/arm/mach-omap2/board-omap3encore.c b/arch/arm/mach-omap2/board-omap3encore.c
new file mode 100644
index 0000000..350c8dd
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3encore.c
@@ -0,0 +1,348 @@
+/*
+ * Support for Barns&Noble Nook Color
+ *
+ * Loosely based on mach-omap2/board-zoom.c
+ * Copyright (C) 2008-2010 Texas Instruments Inc.
+ *
+ * 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.
+ *
+ * June 2011 Oleg Drokin <green@linuxhacker.ru> - Port to mainline
+ *
+ */
+
+#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
+#include <linux/i2c/twl.h>
+#include <linux/regulator/machine.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <plat/common.h>
+#include <plat/usb.h>
+#include <plat/mux.h>
+#include <plat/mmc.h>
+
+#include "mux.h"
+#include "hsmmc.h"
+#include "sdram-hynix-h8mbx00u0mer-0em.h"
+
+/* Encore-specific device-info and i2c addresses. */
+/* Battery, bus 1 */
+#define MAX17042_I2C_SLAVE_ADDRESS	0x36
+#define MAX17042_GPIO_FOR_IRQ		100
+
+/*addition of MAXIM8903/TI GPIO mapping WRT schematics */
+#define MAX8903_UOK_GPIO_FOR_IRQ	115
+#define MAX8903_DOK_GPIO_FOR_IRQ	114
+#define MAX8903_GPIO_CHG_EN		110
+#define MAX8903_GPIO_CHG_STATUS		111
+#define MAX8903_GPIO_CHG_FLT		101
+#define MAX8903_GPIO_CHG_IUSB		102
+#define MAX8903_GPIO_CHG_USUS		104
+#define MAX8903_GPIO_CHG_ILM		61
+
+/* TI WLAN */
+#define ENCORE_WIFI_PMENA_GPIO		22
+#define ENCORE_WIFI_IRQ_GPIO		15
+#define ENCORE_WIFI_EN_POW		16
+
+/* Accelerometer i2c bus 1*/
+#define KXTF9_I2C_SLAVE_ADDRESS		0x0F
+#define KXTF9_GPIO_FOR_PWR		34
+#define KXTF9_GPIO_FOR_IRQ		113
+
+/* Touch screen i2c bus 2*/
+#define CYTTSP_I2C_SLAVEADDRESS		34
+#define ENCORE_CYTTSP_GPIO		99
+#define ENCORE_CYTTSP_RESET_GPIO	46
+
+/* Audio codec, i2c bus 2 */
+#define AUDIO_CODEC_POWER_ENABLE_GPIO	103
+#define AUDIO_CODEC_RESET_GPIO		37
+#define AUDIO_CODEC_IRQ_GPIO		59
+#define AIC3100_I2CSLAVEADDRESS		0x18
+
+
+/* Different HW revisions */
+#define BOARD_ENCORE_REV_EVT1A		0x1
+#define BOARD_ENCORE_REV_EVT1B		0x2
+#define BOARD_ENCORE_REV_EVT2		0x3
+#define BOARD_ENCORE_REV_DVT		0x4
+#define BOARD_ENCORE_REV_PVT		0x5
+#define BOARD_ENCORE_REV_UNKNOWN	0x6
+
+static inline int is_encore_board_evt2(void)
+{
+	return system_rev >= BOARD_ENCORE_REV_EVT2;
+}
+
+static inline int is_encore_board_evt1b(void)
+{
+	return system_rev == BOARD_ENCORE_REV_EVT1B;
+}
+
+static int encore_twl4030_keymap[] = {
+	KEY(1, 0, KEY_VOLUMEUP),
+	KEY(2, 0, KEY_VOLUMEDOWN),
+};
+
+static struct matrix_keymap_data encore_twl4030_keymap_data = {
+	.keymap			= encore_twl4030_keymap,
+	.keymap_size		= ARRAY_SIZE(encore_twl4030_keymap),
+};
+
+static struct twl4030_keypad_data encore_kp_twl4030_data = {
+	.rows			= 8,
+	.cols			= 8,
+	.keymap_data		= &encore_twl4030_keymap_data,
+	.rep			= 1,
+};
+
+/* HOME key code for HW > EVT2A */
+static struct gpio_keys_button encore_gpio_buttons[] = {
+	{
+		.code			= KEY_POWER,
+		.gpio			= 14,
+		.desc			= "POWER",
+		.active_low		= 0,
+		.wakeup			= 1,
+	},
+	{
+		.code			= KEY_HOME,
+		.gpio			= 48,
+		.desc			= "HOME",
+		.active_low		= 1,
+		.wakeup			= 1,
+	},
+};
+
+static struct gpio_keys_platform_data encore_gpio_key_info = {
+	.buttons	= encore_gpio_buttons,
+	.nbuttons	= ARRAY_SIZE(encore_gpio_buttons),
+};
+
+static struct platform_device encore_keys_gpio = {
+	.name	= "gpio-keys",
+	.id	= -1,
+	.dev	= {
+		.platform_data	= &encore_gpio_key_info,
+	},
+};
+
+static struct platform_device *encore_devices[] __initdata = {
+	&encore_keys_gpio,
+};
+
+static void __init omap_encore_init_early(void)
+{
+	omap2_init_common_infrastructure();
+	omap2_init_common_devices(h8mbx00u0mer0em_sdrc_params,
+				  h8mbx00u0mer0em_sdrc_params);
+}
+
+static struct twl4030_usb_data encore_usb_data = {
+	.usb_mode	= T2_USB_MODE_ULPI,
+};
+
+static struct regulator_consumer_supply encore_vmmc1_supply[] = {
+	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
+};
+
+static struct regulator_consumer_supply encore_vdda_dac_supply[] = {
+	REGULATOR_SUPPLY("vdda_dac", "omapdss_venc"),
+};
+
+/* VMMC1 for OMAP VDD_MMC1 (i/o) and MMC1 card */
+static struct regulator_init_data encore_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  = ARRAY_SIZE(encore_vmmc1_supply),
+	.consumer_supplies      = encore_vmmc1_supply,
+};
+
+static struct regulator_init_data encore_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  = ARRAY_SIZE(encore_vdda_dac_supply),
+	.consumer_supplies      = encore_vdda_dac_supply,
+};
+
+/*
+ * The order is reverted in this table so that internal eMMC is presented
+ * as first mmc card for compatibility with existing installations and
+ * for common sense reasons
+ */
+static struct omap2_hsmmc_info mmc[] __initdata = {
+	{
+		.name		= "internal",
+		.mmc		= 2,
+		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+		.nonremovable	= true,
+		.power_saving	= true,
+		.ocr_mask	= MMC_VDD_165_195, /* 1.85V */
+	},
+	{
+		.name		= "external",
+		.mmc		= 1,
+		.caps		= MMC_CAP_4_BIT_DATA,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+		.power_saving	= true,
+	},
+	{
+		.name		= "internal",
+		.mmc		= 3,
+		.caps		= MMC_CAP_4_BIT_DATA,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+		.nonremovable	= true,
+		.power_saving	= true,
+	},
+	{}      /* Terminator */
+};
+
+static int encore_hsmmc_card_detect(struct device *dev, int slot)
+{
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+	/* Encore board EVT2 and later has pin high when card is present */
+	return gpio_get_value_cansleep(mmc->slots[0].switch_pin);
+}
+
+static int encore_twl4030_hsmmc_late_init(struct device *dev)
+{
+	int ret = 0;
+	struct platform_device *pdev = container_of(dev,
+						struct platform_device, dev);
+	struct omap_mmc_platform_data *pdata = dev->platform_data;
+
+	if (is_encore_board_evt2()) {
+		/* Setting MMC1 (external) Card detect */
+		if (pdev->id == 0)
+			pdata->slots[0].card_detect = encore_hsmmc_card_detect;
+	}
+
+	return ret;
+}
+
+static __init void encore_hsmmc_set_late_init(struct device *dev)
+{
+	struct omap_mmc_platform_data *pdata;
+
+	/* dev can be null if CONFIG_MMC_OMAP_HS is not set */
+	if (!dev)
+		return;
+
+	pdata = dev->platform_data;
+	pdata->init = encore_twl4030_hsmmc_late_init;
+}
+
+static int __ref encore_twl_gpio_setup(struct device *dev,
+		unsigned gpio, unsigned ngpio)
+{
+	struct omap2_hsmmc_info *c;
+	/*
+	 * gpio + 0 is "mmc0_cd" (input/IRQ),
+	 * gpio + 1 is "mmc1_cd" (input/IRQ)
+	 */
+	mmc[1].gpio_cd = gpio + 0;
+	mmc[0].gpio_cd = gpio + 1;
+	omap2_hsmmc_init(mmc);
+	for (c = mmc; c->mmc; c++)
+		encore_hsmmc_set_late_init(c->dev);
+
+	return 0;
+}
+
+static struct twl4030_gpio_platform_data encore_gpio_data = {
+	.gpio_base	= OMAP_MAX_GPIO_LINES,
+	.irq_base	= TWL4030_GPIO_IRQ_BASE,
+	.irq_end	= TWL4030_GPIO_IRQ_END,
+	.setup		= encore_twl_gpio_setup,
+};
+
+static struct twl4030_madc_platform_data encore_madc_data = {
+	.irq_line	= 1,
+};
+
+static struct twl4030_platform_data __refdata encore_twldata = {
+	.irq_base	= TWL4030_IRQ_BASE,
+	.irq_end	= TWL4030_IRQ_END,
+
+	.madc		= &encore_madc_data,
+	.usb		= &encore_usb_data,
+	.gpio		= &encore_gpio_data,
+	.keypad		= &encore_kp_twl4030_data,
+	.vmmc1		= &encore_vmmc1,
+	.vdac		= &encore_vdac,
+};
+
+static struct i2c_board_info __initdata encore_i2c_bus1_info[] = {
+	{
+		I2C_BOARD_INFO("tps65921", 0x48),
+		.flags = I2C_CLIENT_WAKE,
+		.irq = INT_34XX_SYS_NIRQ,
+		.platform_data = &encore_twldata,
+	},
+};
+
+static struct i2c_board_info __initdata encore_i2c_bus2_info[] = {
+};
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#endif
+
+static struct omap_board_config_kernel encore_config[] __initdata = {
+};
+
+static void __init omap_i2c_init(void)
+{
+	omap_register_i2c_bus(1, 100, encore_i2c_bus1_info,
+			ARRAY_SIZE(encore_i2c_bus1_info));
+	omap_register_i2c_bus(2, 400, encore_i2c_bus2_info,
+			ARRAY_SIZE(encore_i2c_bus2_info));
+}
+
+static void __init omap_encore_init(void)
+{
+	omap3_mux_init(board_mux, OMAP_PACKAGE_CBP);
+	omap_i2c_init();
+	omap_serial_init();
+	usb_musb_init(NULL);
+
+	omap_board_config = encore_config;
+	omap_board_config_size = ARRAY_SIZE(encore_config);
+
+	platform_add_devices(encore_devices, ARRAY_SIZE(encore_devices));
+}
+
+MACHINE_START(ENCORE, "encore")
+	.boot_params	= 0x80000100,
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap_encore_init_early,
+	.init_irq	= omap_init_irq,
+	.init_machine	= omap_encore_init,
+	.timer		= &omap_timer,
+MACHINE_END
diff --git a/arch/arm/plat-omap/include/plat/uncompress.h b/arch/arm/plat-omap/include/plat/uncompress.h
index ac4b60d..2d93126 100644
--- a/arch/arm/plat-omap/include/plat/uncompress.h
+++ b/arch/arm/plat-omap/include/plat/uncompress.h
@@ -150,6 +150,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id)
 		DEBUG_LL_OMAP3(3, cm_t3517);
 		DEBUG_LL_OMAP3(3, craneboard);
 		DEBUG_LL_OMAP3(3, devkit8000);
+		DEBUG_LL_OMAP3(3, encore);
 		DEBUG_LL_OMAP3(3, igep0020);
 		DEBUG_LL_OMAP3(3, igep0030);
 		DEBUG_LL_OMAP3(3, nokia_rm680);
-- 
1.7.4.4