[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 8f0ec46a7096..5375740cac64 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 faa2c3f6c1af..2793076bd33a 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 c4dfbe87fc4e..d7dc3a76e33c 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 000000000000..ae8973279c20
--- /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 000000000000..1e8bccbda510
--- /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