[ARM] 5153/1: Add support for PalmTX handheld computer

PalmTX is PXA27x based device with wifi, bluetooth,
touchscreen, sdio slot, irda, keypad, nand flash,
pxa framebuffer, serial and usb gadget interface.

Supported by this patch is pxafb, touchscreen, irda,
keypad and sdio slot.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

5 files changed, 469 insertions, 0 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 8f0ec46..5375740 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -571,6 +571,12 @@ P:	Dirk Opfer
 M:	dirk@opfer-online.de
 S:	Maintained
 
+ARM/PALMTX SUPPORT
+P:	Marek Vasut
+M:	marek.vasut@gmail.com
+W:	http://hackndev.com
+S:	Maintained
+
 ARM/PLEB SUPPORT
 P:	Peter Chubb
 M:	pleb@gelato.unsw.edu.au
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index faa2c3f..2793076 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -199,6 +199,20 @@ config MACH_PCM027
 	select IWMMXT
 	select PXA_SSP
 
+config ARCH_PXA_PALM
+	bool "PXA based Palm PDAs"
+	select HAVE_PWM
+
+config MACH_PALMTX
+	bool "Palm T|X"
+	default y
+	depends on ARCH_PXA_PALM
+	select PXA27x
+	select IWMMXT
+	help
+	  Say Y here if you intend to run this kernel on a Palm T|X
+	  handheld computer.
+
 config MACH_PCM990_BASEBOARD
 	bool "PHYTEC PCM-990 development board"
 	select HAVE_PWM
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index c4dfbe8..d7dc3a7 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_MACH_TOSA)		+= tosa.o
 obj-$(CONFIG_MACH_EM_X270)	+= em-x270.o
 obj-$(CONFIG_MACH_MAGICIAN)	+= magician.o
 obj-$(CONFIG_ARCH_PXA_ESERIES)	+= eseries.o
+obj-$(CONFIG_MACH_PALMTX)+= palmtx.o
 
 ifeq ($(CONFIG_MACH_ZYLONITE),y)
   obj-y				+= zylonite.o
diff --git a/arch/arm/mach-pxa/palmtx.c b/arch/arm/mach-pxa/palmtx.c
new file mode 100644
index 0000000..ae89732
--- /dev/null
+++ b/arch/arm/mach-pxa/palmtx.c
@@ -0,0 +1,342 @@
+/*
+ * Hardware definitions for PalmTX
+ *
+ * Author:     Marek Vasut <marek.vasut@gmail.com>
+ *
+ * Based on work of:
+ *		Alex Osborne <ato@meshy.org>
+ *		Cristiano P. <cristianop@users.sourceforge.net>
+ *		Jan Herman <2hp@seznam.cz>
+ *		Michal Hrusecky
+ *
+ * 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.
+ *
+ * (find more info at www.hackndev.com)
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/pwm_backlight.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/audio.h>
+#include <asm/arch/palmtx.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/mfp-pxa27x.h>
+#include <asm/arch/irda.h>
+#include <asm/arch/pxa27x_keypad.h>
+#include <asm/arch/udc.h>
+
+#include "generic.h"
+#include "devices.h"
+
+/******************************************************************************
+ * Pin configuration
+ ******************************************************************************/
+static unsigned long palmtx_pin_config[] __initdata = {
+	/* MMC */
+	GPIO32_MMC_CLK,
+	GPIO92_MMC_DAT_0,
+	GPIO109_MMC_DAT_1,
+	GPIO110_MMC_DAT_2,
+	GPIO111_MMC_DAT_3,
+	GPIO112_MMC_CMD,
+
+	/* AC97 */
+	GPIO28_AC97_BITCLK,
+	GPIO29_AC97_SDATA_IN_0,
+	GPIO30_AC97_SDATA_OUT,
+	GPIO31_AC97_SYNC,
+
+	/* IrDA */
+	GPIO46_FICP_RXD,
+	GPIO47_FICP_TXD,
+
+	/* PWM */
+	GPIO16_PWM0_OUT,
+
+	/* USB */
+	GPIO13_GPIO,
+};
+
+/******************************************************************************
+ * SD/MMC card controller
+ ******************************************************************************/
+static int palmtx_mci_init(struct device *dev, irq_handler_t palmtx_detect_int,
+				void *data)
+{
+	int err = 0;
+
+	/* Setup an interrupt for detecting card insert/remove events */
+	err = request_irq(IRQ_GPIO_PALMTX_SD_DETECT_N, palmtx_detect_int,
+			IRQF_DISABLED | IRQF_SAMPLE_RANDOM |
+			IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+			"SD/MMC card detect", data);
+	if (err) {
+		printk(KERN_ERR "%s: cannot request SD/MMC card detect IRQ\n",
+				__func__);
+		return err;
+	}
+
+	err = gpio_request(GPIO_NR_PALMTX_SD_POWER, "SD_POWER");
+	if (err)
+		goto pwr_err;
+
+	err = gpio_request(GPIO_NR_PALMTX_SD_READONLY, "SD_READONLY");
+	if (err)
+		goto ro_err;
+
+	printk(KERN_DEBUG "%s: irq registered\n", __func__);
+
+	return 0;
+
+ro_err:
+	gpio_free(GPIO_NR_PALMTX_SD_POWER);
+pwr_err:
+	free_irq(IRQ_GPIO_PALMTX_SD_DETECT_N, data);
+	return err;
+}
+
+static void palmtx_mci_exit(struct device *dev, void *data)
+{
+	gpio_free(GPIO_NR_PALMTX_SD_READONLY);
+	gpio_free(GPIO_NR_PALMTX_SD_POWER);
+	free_irq(IRQ_GPIO_PALMTX_SD_DETECT_N, data);
+}
+
+static void palmtx_mci_power(struct device *dev, unsigned int vdd)
+{
+	struct pxamci_platform_data *p_d = dev->platform_data;
+	gpio_set_value(GPIO_NR_PALMTX_SD_POWER, p_d->ocr_mask & (1 << vdd));
+}
+
+static int palmtx_mci_get_ro(struct device *dev)
+{
+	return gpio_get_value(GPIO_NR_PALMTX_SD_READONLY);
+}
+
+static struct pxamci_platform_data palmtx_mci_platform_data = {
+	.ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,
+	.setpower	= palmtx_mci_power,
+	.get_ro		= palmtx_mci_get_ro,
+	.init 		= palmtx_mci_init,
+	.exit		= palmtx_mci_exit,
+};
+
+/******************************************************************************
+ * GPIO keyboard
+ ******************************************************************************/
+static unsigned int palmtx_matrix_keys[] = {
+	KEY(0, 0, KEY_POWER),
+	KEY(0, 1, KEY_F1),
+	KEY(0, 2, KEY_ENTER),
+
+	KEY(1, 0, KEY_F2),
+	KEY(1, 1, KEY_F3),
+	KEY(1, 2, KEY_F4),
+
+	KEY(2, 0, KEY_UP),
+	KEY(2, 2, KEY_DOWN),
+
+	KEY(3, 0, KEY_RIGHT),
+	KEY(3, 2, KEY_LEFT),
+
+};
+
+static struct pxa27x_keypad_platform_data palmtx_keypad_platform_data = {
+	.matrix_key_rows	= 4,
+	.matrix_key_cols	= 3,
+	.matrix_key_map		= palmtx_matrix_keys,
+	.matrix_key_map_size	= ARRAY_SIZE(palmtx_matrix_keys),
+
+	.debounce_interval	= 30,
+};
+
+/******************************************************************************
+ * GPIO keys
+ ******************************************************************************/
+static struct gpio_keys_button palmtx_pxa_buttons[] = {
+	{KEY_F8, GPIO_NR_PALMTX_HOTSYNC_BUTTON_N, 1, "HotSync Button" },
+};
+
+static struct gpio_keys_platform_data palmtx_pxa_keys_data = {
+	.buttons	= palmtx_pxa_buttons,
+	.nbuttons	= ARRAY_SIZE(palmtx_pxa_buttons),
+};
+
+static struct platform_device palmtx_pxa_keys = {
+	.name	= "gpio-keys",
+	.id	= -1,
+	.dev	= {
+		.platform_data = &palmtx_pxa_keys_data,
+	},
+};
+
+/******************************************************************************
+ * Backlight
+ ******************************************************************************/
+static int palmtx_backlight_init(struct device *dev)
+{
+	int ret;
+
+	ret = gpio_request(GPIO_NR_PALMTX_BL_POWER, "BL POWER");
+	if (ret)
+		goto err;
+	ret = gpio_request(GPIO_NR_PALMTX_LCD_POWER, "LCD POWER");
+	if (ret)
+		goto err2;
+
+	return 0;
+err2:
+	gpio_free(GPIO_NR_PALMTX_BL_POWER);
+err:
+	return ret;
+}
+
+static int palmtx_backlight_notify(int brightness)
+{
+	gpio_set_value(GPIO_NR_PALMTX_BL_POWER, brightness);
+	gpio_set_value(GPIO_NR_PALMTX_LCD_POWER, brightness);
+	return brightness;
+}
+
+static void palmtx_backlight_exit(struct device *dev)
+{
+	gpio_free(GPIO_NR_PALMTX_BL_POWER);
+	gpio_free(GPIO_NR_PALMTX_LCD_POWER);
+}
+
+static struct platform_pwm_backlight_data palmtx_backlight_data = {
+	.pwm_id		= 0,
+	.max_brightness	= PALMTX_MAX_INTENSITY,
+	.dft_brightness	= PALMTX_MAX_INTENSITY,
+	.pwm_period_ns	= PALMTX_PERIOD_NS,
+	.init		= palmtx_backlight_init,
+	.notify		= palmtx_backlight_notify,
+	.exit		= palmtx_backlight_exit,
+};
+
+static struct platform_device palmtx_backlight = {
+	.name	= "pwm-backlight",
+	.dev	= {
+		.parent		= &pxa27x_device_pwm0.dev,
+		.platform_data	= &palmtx_backlight_data,
+	},
+};
+
+/******************************************************************************
+ * IrDA
+ ******************************************************************************/
+static void palmtx_irda_transceiver_mode(struct device *dev, int mode)
+{
+	gpio_set_value(GPIO_NR_PALMTX_IR_DISABLE, mode & IR_OFF);
+	pxa2xx_transceiver_mode(dev, mode);
+}
+
+static struct pxaficp_platform_data palmtx_ficp_platform_data = {
+	.transceiver_cap	= IR_SIRMODE | IR_FIRMODE | IR_OFF,
+	.transceiver_mode	= palmtx_irda_transceiver_mode,
+};
+
+/******************************************************************************
+ * UDC
+ ******************************************************************************/
+static void palmtx_udc_command(int cmd)
+{
+	gpio_set_value(GPIO_NR_PALMTX_USB_POWER, !cmd);
+	udelay(50);
+	gpio_set_value(GPIO_NR_PALMTX_USB_PULLUP, !cmd);
+}
+
+static struct pxa2xx_udc_mach_info palmtx_udc_info __initdata = {
+	.gpio_vbus		= GPIO_NR_PALMTX_USB_DETECT_N,
+	.gpio_vbus_inverted	= 1,
+	.udc_command		= palmtx_udc_command,
+};
+
+/******************************************************************************
+ * Framebuffer
+ ******************************************************************************/
+static struct pxafb_mode_info palmtx_lcd_modes[] = {
+{
+	.pixclock	= 57692,
+	.xres		= 320,
+	.yres		= 480,
+	.bpp		= 16,
+
+	.left_margin	= 32,
+	.right_margin	= 1,
+	.upper_margin	= 7,
+	.lower_margin	= 1,
+
+	.hsync_len	= 4,
+	.vsync_len	= 1,
+},
+};
+
+static struct pxafb_mach_info palmtx_lcd_screen = {
+	.modes		= palmtx_lcd_modes,
+	.num_modes	= ARRAY_SIZE(palmtx_lcd_modes),
+	.lcd_conn	= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
+};
+
+/******************************************************************************
+ * Machine init
+ ******************************************************************************/
+static struct platform_device *devices[] __initdata = {
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+	&palmtx_pxa_keys,
+#endif
+	&palmtx_backlight,
+};
+
+static struct map_desc palmtx_io_desc[] __initdata = {
+{
+	.virtual	= PALMTX_PCMCIA_VIRT,
+	.pfn		= __phys_to_pfn(PALMTX_PCMCIA_PHYS),
+	.length		= PALMTX_PCMCIA_SIZE,
+	.type		= MT_DEVICE
+},
+};
+
+static void __init palmtx_map_io(void)
+{
+	pxa_map_io();
+	iotable_init(palmtx_io_desc, ARRAY_SIZE(palmtx_io_desc));
+}
+
+static void __init palmtx_init(void)
+{
+	pxa2xx_mfp_config(ARRAY_AND_SIZE(palmtx_pin_config));
+
+	set_pxa_fb_info(&palmtx_lcd_screen);
+	pxa_set_mci_info(&palmtx_mci_platform_data);
+	pxa_set_udc_info(&palmtx_udc_info);
+	pxa_set_ac97_info(NULL);
+	pxa_set_ficp_info(&palmtx_ficp_platform_data);
+	pxa_set_keypad_info(&palmtx_keypad_platform_data);
+
+	platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+MACHINE_START(PALMTX, "Palm T|X")
+	.phys_io	= PALMTX_PHYS_IO_START,
+	.io_pg_offst	= io_p2v(0x40000000),
+	.boot_params	= 0xa0000100,
+	.map_io		= palmtx_map_io,
+	.init_irq	= pxa27x_init_irq,
+	.timer		= &pxa_timer,
+	.init_machine	= palmtx_init
+MACHINE_END
diff --git a/include/asm-arm/arch-pxa/palmtx.h b/include/asm-arm/arch-pxa/palmtx.h
new file mode 100644
index 0000000..1e8bccb
--- /dev/null
+++ b/include/asm-arm/arch-pxa/palmtx.h
@@ -0,0 +1,106 @@
+/*
+ * GPIOs and interrupts for Palm T|X Handheld Computer
+ *
+ * Based on palmld-gpio.h by Alex Osborne
+ *
+ * Authors:	Marek Vasut <marek.vasut@gmail.com>
+ *		Cristiano P. <cristianop@users.sourceforge.net>
+ *		Jan Herman <2hp@seznam.cz>
+ *
+ * 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.
+ *
+ */
+
+#ifndef _INCLUDE_PALMTX_H_
+#define _INCLUDE_PALMTX_H_
+
+/** HERE ARE GPIOs **/
+
+/* GPIOs */
+#define GPIO_NR_PALMTX_GPIO_RESET		1
+
+#define GPIO_NR_PALMTX_POWER_DETECT		12 /* 90 */
+#define GPIO_NR_PALMTX_HOTSYNC_BUTTON_N		10
+#define GPIO_NR_PALMTX_EARPHONE_DETECT		107
+
+/* SD/MMC */
+#define GPIO_NR_PALMTX_SD_DETECT_N		14
+#define GPIO_NR_PALMTX_SD_POWER			114 /* probably */
+#define GPIO_NR_PALMTX_SD_READONLY		115 /* probably */
+
+/* TOUCHSCREEN */
+#define GPIO_NR_PALMTX_WM9712_IRQ		27
+
+/* IRDA -  disable GPIO connected to SD pin of tranceiver (TFBS4710?) ? */
+#define GPIO_NR_PALMTX_IR_DISABLE		40
+
+/* USB */
+#define GPIO_NR_PALMTX_USB_DETECT_N		13
+#define GPIO_NR_PALMTX_USB_POWER		95
+#define GPIO_NR_PALMTX_USB_PULLUP		93
+
+/* LCD/BACKLIGHT */
+#define GPIO_NR_PALMTX_BL_POWER			84
+#define GPIO_NR_PALMTX_LCD_POWER		96
+
+/* LCD BORDER */
+#define GPIO_NR_PALMTX_BORDER_SWITCH		98
+#define GPIO_NR_PALMTX_BORDER_SELECT		22
+
+/* BLUETOOTH */
+#define GPIO_NR_PALMTX_BT_POWER			17
+#define GPIO_NR_PALMTX_BT_RESET			83
+
+/* PCMCIA (WiFi) */
+#define GPIO_NR_PALMTX_PCMCIA_POWER1		94
+#define GPIO_NR_PALMTX_PCMCIA_POWER2		108
+#define GPIO_NR_PALMTX_PCMCIA_RESET		79
+#define GPIO_NR_PALMTX_PCMCIA_READY		116
+
+/* NAND Flash ... this GPIO may be incorrect! */
+#define GPIO_NR_PALMTX_NAND_BUFFER_DIR		79
+
+/* INTERRUPTS */
+#define IRQ_GPIO_PALMTX_SD_DETECT_N	IRQ_GPIO(GPIO_NR_PALMTX_SD_DETECT_N)
+#define IRQ_GPIO_PALMTX_WM9712_IRQ	IRQ_GPIO(GPIO_NR_PALMTX_WM9712_IRQ)
+#define IRQ_GPIO_PALMTX_USB_DETECT	IRQ_GPIO(GPIO_NR_PALMTX_USB_DETECT)
+#define IRQ_GPIO_PALMTX_GPIO_RESET	IRQ_GPIO(GPIO_NR_PALMTX_GPIO_RESET)
+
+/** HERE ARE INIT VALUES **/
+
+/* Various addresses  */
+#define PALMTX_PCMCIA_PHYS	0x28000000
+#define PALMTX_PCMCIA_VIRT	0xf0000000
+#define PALMTX_PCMCIA_SIZE	0x100000
+
+#define PALMTX_PHYS_RAM_START	0xa0000000
+#define PALMTX_PHYS_IO_START	0x40000000
+
+#define PALMTX_PHYS_FLASH_START	PXA_CS0_PHYS	/* ChipSelect 0 */
+#define PALMTX_PHYS_NAND_START	PXA_CS1_PHYS	/* ChipSelect 1 */
+
+/* TOUCHSCREEN */
+#define AC97_LINK_FRAME			21
+
+
+/* BATTERY */
+#define PALMTX_BAT_MAX_VOLTAGE		4000	/* 4.00v current voltage */
+#define PALMTX_BAT_MIN_VOLTAGE		3550	/* 3.55v critical voltage */
+#define PALMTX_BAT_MAX_CURRENT		0	/* unknokn */
+#define PALMTX_BAT_MIN_CURRENT		0	/* unknown */
+#define PALMTX_BAT_MAX_CHARGE		1	/* unknown */
+#define PALMTX_BAT_MIN_CHARGE		1	/* unknown */
+#define PALMTX_MAX_LIFE_MINS		360	/* on-life in minutes */
+
+#define PALMTX_BAT_MEASURE_DELAY	(HZ * 1)
+
+/* BACKLIGHT */
+#define PALMTX_MAX_INTENSITY		0xFE
+#define PALMTX_DEFAULT_INTENSITY	0x7E
+#define PALMTX_LIMIT_MASK		0x7F
+#define PALMTX_PRESCALER		0x3F
+#define PALMTX_PERIOD_NS		3500
+
+#endif