PalmTX initial support

Hi,
the following patch adds initial support for PalmTX handheld computer. It 
originates from HnD kernel tree (www.hackndev.com), then I pushed it to 
handhelds.org and now I'd like it to be applied mainline.

PalmTX is pxa27x based handheld computer.

Currently supported - mmc, gpio keys, pxa matrix keypad, irda, framebuffer, 
ac97 port (for touchscreen).

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>

best regards
Marek Vasut

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 5da7a68..ee136b7 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -138,6 +138,19 @@ config MACH_PCM027
 	select PXA27x
 	select IWMMXT
 
+config ARCH_PXA_PALM
+	bool "PXA based Palm PDAs"
+
+config MACH_XSCALE_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.
+
 endchoice
 
 choice
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 0e6d05b..e74c043 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -36,6 +36,7 @@ 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_XSCALE_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..92f4d7c
--- /dev/null
+++ b/arch/arm/mach-pxa/palmtx.c
@@ -0,0 +1,299 @@
+/*
+ * Hardware definitions for PalmTX
+ *
+ * Authors:	Marek Vasut <marek.vasut@gmail.com>
+ *
+ * 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 <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/palmtx-init.h>
+#include <asm/arch/palmtx-gpio.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/pxa2xx-gpio.h>
+#include <asm/arch/irda.h>
+#include <asm/arch/pxa27x_keypad.h>
+
+#include "generic.h"
+
+/******************************************************************************
+ * SD/MMC card controller
+ ******************************************************************************/
+static int palmtx_mci_init(struct device *dev,
+				irqreturn_t (*palmtx_detect_int)(int, void *),
+				void *data)
+{
+	int err = 0;
+
+	/* Setup GPIOs for MMC/SD card controller. */
+	pxa_gpio_mode(GPIO32_MMCCLK_MD);
+	pxa_gpio_mode(GPIO92_MMCDAT0_MD);
+	pxa_gpio_mode(GPIO109_MMCDAT1_MD);
+	pxa_gpio_mode(GPIO110_MMCDAT2_MD);
+	pxa_gpio_mode(GPIO111_MMCDAT3_MD);
+	pxa_gpio_mode(GPIO112_MMCCMD_MD);
+	pxa_gpio_mode(GPIO_NR_PALMTX_SD_DETECT_N | GPIO_IN);
+
+	/* Setup an interrupt for detecting card insert/remove events */
+	set_irq_type(IRQ_GPIO_PALMTX_SD_DETECT_N, IRQ_TYPE_EDGE_BOTH);
+	err = request_irq(IRQ_GPIO_PALMTX_SD_DETECT_N, palmtx_detect_int,
+			IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
+			"SD/MMC card detect", data);
+	if (err) {
+		printk(KERN_ERR "%s: cannot request SD/MMC card detect IRQ\n",
+				__func__);
+		return err;
+	}
+
+	printk(KERN_DEBUG "%s: irq registered\n", __func__);
+
+	return 0;
+}
+
+static void palmtx_mci_exit(struct device *dev, void *data)
+{
+	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, !!((1 << vdd) & p_d->ocr_mask));
+}
+
+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
+ ******************************************************************************/
+#ifdef CONFIG_KEYBOARD_GPIO
+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",
+	.dev	= {
+		.platform_data = &palmtx_pxa_keys_data,
+	},
+};
+#endif
+
+/******************************************************************************
+ * Backlight
+ ******************************************************************************/
+static void palmtx_set_bl_intensity(int intensity)
+{
+	gpio_set_value(GPIO_NR_PALMTX_BL_POWER, intensity);
+	gpio_set_value(GPIO_NR_PALMTX_LCD_POWER, intensity);
+	if (intensity) {
+		PWM_CTRL0	= 0x7;
+		PWM_PERVAL0	= PALMTX_PERIOD;
+		PWM_PWDUTY0	= intensity;
+	}
+}
+
+static struct generic_bl_info palmtx_bl_info = {
+	.max_intensity		= PALMTX_MAX_INTENSITY,
+	.default_intensity	= PALMTX_MAX_INTENSITY,
+	.set_bl_intensity	= palmtx_set_bl_intensity,
+	.limit_mask		= PALMTX_LIMIT_MASK,
+};
+
+static struct platform_device palmtx_backlight = {
+	.name	= "generic-bl",
+	.id	= -1,
+	.dev	= {
+		.platform_data = &palmtx_bl_info,
+	},
+};
+
+/******************************************************************************
+ * IrDA
+ ******************************************************************************/
+static void palmtx_irda_transceiver_mode(struct device *dev, int mode)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	if (mode & IR_SIRMODE)
+		printk(KERN_INFO "IrDA: setting mode to SIR\n");
+	else if (mode & IR_FIRMODE)
+		printk(KERN_INFO "IrDA: setting mode to FIR\n");
+
+	if (mode & IR_OFF) {
+		printk(KERN_INFO "IrDA: turning transceiver OFF\n");
+		gpio_set_value(GPIO_NR_PALMTX_IR_DISABLE, 1);
+	} else {
+		printk(KERN_INFO "IrDA: turning transceiver ON\n");
+		gpio_set_value(GPIO_NR_PALMTX_IR_DISABLE, 0);
+		gpio_set_value(GPIO47_ICPTXD_MD, 1);
+		mdelay(30);
+		gpio_set_value(GPIO47_ICPTXD_MD, 0);
+	}
+
+	local_irq_restore(flags);
+}
+
+static struct pxaficp_platform_data palmtx_ficp_platform_data = {
+	.transceiver_cap	= IR_SIRMODE | IR_FIRMODE | IR_OFF,
+	.transceiver_mode	= palmtx_irda_transceiver_mode,
+};
+
+/******************************************************************************
+ * AC97
+ ******************************************************************************/
+static struct platform_device palmtx_ac97 = {
+	.name	= "pxa2xx-ac97",
+	.id	= 0,
+};
+
+/******************************************************************************
+ * 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,
+
+	.sync		= FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
+},
+};
+
+static struct pxafb_mach_info palmtx_lcd_screen = {
+	.modes		= palmtx_lcd_modes,
+	.num_modes	= ARRAY_SIZE(palmtx_lcd_modes),
+	.lccr0		= LCCR0_Color | LCCR0_Sngl | LCCR0_Act | LCCR0_RDSTM |
+			  LCCR0_CMDIM | LCCR0_OUC  | LCCR0_LDDALT,
+	.lccr3		= LCCR3_HorSnchL | LCCR3_VrtSnchL |
+			  LCCR3_PixFlEdg | LCCR3_Bpp(4),
+};
+
+/******************************************************************************
+ * Machine init
+ ******************************************************************************/
+static struct platform_device *devices[] __initdata = {
+#ifdef CONFIG_KEYBOARD_GPIO
+	&palmtx_pxa_keys,
+#endif
+	&palmtx_ac97,
+	&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)
+{
+	/* disable primary codec interrupt to prevent WM9712 constantly
+	 * interrupting the CPU and preventing the boot process to complete
+	 * (Thanx Alex & Shadowmite!) */
+	GCR &= ~GCR_PRIRDY_IEN;
+
+	/* configure AC97's GPIOs */
+	pxa_gpio_mode(GPIO28_BITCLK_AC97_MD);
+	pxa_gpio_mode(GPIO29_SDATA_IN_AC97_MD);
+	pxa_gpio_mode(GPIO30_SDATA_OUT_AC97_MD);
+	pxa_gpio_mode(GPIO31_SYNC_AC97_MD);
+
+	set_pxa_fb_info(&palmtx_lcd_screen);
+	pxa_set_mci_info(&palmtx_mci_platform_data);
+	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(XSCALE_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-gpio.h b/include/asm-arm/arch-pxa/palmtx-gpio.h
new file mode 100644
index 0000000..0f99490
--- /dev/null
+++ b/include/asm-arm/arch-pxa/palmtx-gpio.h
@@ -0,0 +1,73 @@
+/*
+ * 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 AT users DOT sourceforge DOT net>
+ *		Jan Herman <2hp AT seznam DOT 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_GPIO_H_
+#define _INCLUDE_PALMTX_GPIO_H_
+
+/* 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_SCREEN			19
+#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 ... these GPIOs are maybe incorrect! */
+#define GPIO_NR_PALMTX_NAND_CS1_N		15
+#define GPIO_NR_PALMTX_NAND_READY		18
+#define GPIO_NR_PALMTX_NAND_WE_N		49
+#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)
+
+#endif
diff --git a/include/asm-arm/arch-pxa/palmtx-init.h b/include/asm-arm/arch-pxa/palmtx-init.h
new file mode 100644
index 0000000..7522b1e
--- /dev/null
+++ b/include/asm-arm/arch-pxa/palmtx-init.h
@@ -0,0 +1,69 @@
+/*
+ * Init values for Palm T|X Handheld Computer
+ *
+ * Authors:	Marek Vasut <marek.vasut@gmail.com>
+ *		Cristiano P. <cristianop AT users DOT sourceforge DOT net>
+ *		Jan Herman <2hp AT seznam DOT 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.
+ *
+ *
+ * this code is in a very early stage:
+ * - use it at your own risk
+ * - any help is encouraged and will be highly appreciated
+ *
+ */
+
+#ifndef _INCLUDE_PALMTX_INIT_H_
+
+#define _INCLUDE_PALMTX_INIT_H_
+
+/* 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 */
+
+/* KEYPAD configuration */
+
+#define KPASMKP(col)		(col/2 == 0 ? KPASMKP0 : KPASMKP1)
+#define KPASMKPx_MKC(row, col)	(1 << (row + 16*(col%2)))
+
+#define PALMTX_KM_ROWS		4
+#define PALMTX_KM_COLS		3
+
+
+/* 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                   0x12C
+
+#endif