Initial B&N Nook Color support, take four

From: Oleg Drokin <[email protected]>

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

Signed-off-by Oleg Drokin <[email protected]>

---
 arch/arm/mach-omap2/Kconfig                  |    5 +
 arch/arm/mach-omap2/Makefile                 |    2 +
 arch/arm/mach-omap2/board-omap3encore.c      |  350 ++++++++++++++++++++++++++
 arch/arm/plat-omap/include/plat/uncompress.h |    1 +
 4 files changed, 358 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-omap2/board-omap3encore.c

arch/arm/mach-omap2/Kconfig +5 -0

index b997a35..5370561 100644
@@ -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

arch/arm/mach-omap2/Makefile +2 -0

index a0c2cae..619e5ca 100644
@@ -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 \

arch/arm/mach-omap2/board-omap3encore.c new file +1 -0

new file mode 100644
index 0000000..e4a0a98
@@ -0,0 +1,350 @@
+/*

arch/arm/mach-omap2/board-omap3encore.c new file +132 -0

+ *
+ */
+
+#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);

arch/arm/mach-omap2/board-omap3encore.c new file +152 -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  = 1,
+	.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  = 1,
+	.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,
+	},
+};

arch/arm/mach-omap2/board-omap3encore.c new file +35 -0

+#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

arch/arm/plat-omap/include/plat/uncompress.h +1 -0

index 30b891c..21c4ca9 100644
@@ -151,6 +151,7 @@ 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);

Hello!

Next attempt at B&N Nook Color board file submission. USB peripheral mode is fully operational as is serial console and MMC/SDCard.

Thank you very much for this work. I am considering the idea of buying one of these Nook Color things; at least it would get good company from a couple of other half-finished ARM-type projects lying around. But, most particularly, I would be interested to know exactly what is meant by

"USB peripheral mode is fully operational"

because one of the things I would wish to be able to do with the Nook is to hook up a keyboard or, alternatively, a USB VGA adapter. Thus, do you mean exactly that the Nook is supported as a client when hooked by USB to another computer? Or does this mean that there actually is hope of having it act as a USB host?

Hello!

Next attempt at B&N Nook Color board file submission. USB peripheral mode is fully operational as is serial console and MMC/SDCard.

Changes
since v3:
Separated mach-types change into a separate patch (already got RMK approval) Dramatically cut number of includes in the board file again.
No longer set voltage regulator dev, just device name in the supply. Style fixes
Serial in uncompress.h sorted by name
Corrected MUX package to CBP in board file.
omap_i2c_init now has no return since it's unused anyway.
Fixed keypad definition.

since v2:
rebased on devel-cleanup branch

since v1:
Threw away all the android stuff as suggested
Cleaned up voltage regulators and removed the ones our twl chip actually
does not have
Changed the split of the patches to board file + twl update

Bye,
Oleg