[PATCH] PalmTX initial support

From: Marek VaÅut
Date: Wed Jul 02 2008 - 16:31:33 EST

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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@xxxxxxxxx>

best regards
Marek Vasut
Signed-off-by: Marek Vasut <marek.vasut@xxxxxxxxx>
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@xxxxxxxxx>
+ *
+ * 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@xxxxxxxxx>
+ * 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@xxxxxxxxx>
+ * 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

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