ARM: OMAP: Palm Tungsten E board update

General update of the board file for Palm Tungsten E. Registers the
platform devices contained in the PDA (ROM chip, keypad, infra-red)
and updates the configuration for USB and MMC, whose config values
were previously guessed in most cases due to lack of documentation
(and now are confirmed by a number of users). Macros for GPIO pins are
moved to a file in include/asm-arm/arch-omap.

Signed-off-by: Andrzej Zaborowski <balrog@zabor.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

2 files changed, 363 insertions, 23 deletions

diff --git a/arch/arm/mach-omap1/Kconfig b/arch/arm/mach-omap1/Kconfig
index f6ecdd3a2478..84a3b085ac78 100644
--- a/arch/arm/mach-omap1/Kconfig
+++ b/arch/arm/mach-omap1/Kconfig
@@ -84,11 +84,10 @@ config MACH_OMAP_PALMTE
 	bool "Palm Tungsten E"
 	depends on ARCH_OMAP1 && ARCH_OMAP15XX
 	help
-          Support for the Palm Tungsten E PDA. Currently only the LCD panel
-          is supported. To boot the kernel, you'll need a PalmOS compatible
-          bootloader; check out http://palmtelinux.sourceforge.net for more
-          information.
-          Say Y here if you have such a PDA, say NO otherwise.
+	  Support for the Palm Tungsten E PDA.  To boot the kernel, you'll
+	  need a PalmOS compatible bootloader; check out
+	  http://palmtelinux.sourceforge.net/ for more information.
+	  Say Y here if you have this PDA model, say N otherwise.
 
 config MACH_NOKIA770
 	bool "Nokia 770"
diff --git a/arch/arm/mach-omap1/board-palmte.c b/arch/arm/mach-omap1/board-palmte.c
index 015824185629..2f9d00a00135 100644
--- a/arch/arm/mach-omap1/board-palmte.c
+++ b/arch/arm/mach-omap1/board-palmte.c
@@ -17,49 +17,189 @@
 
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/input.h>
 #include <linux/platform_device.h>
-#include <linux/notifier.h>
-#include <linux/clk.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/tsc2102.h>
+#include <linux/interrupt.h>
 
+#include <asm/apm.h>
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
+#include <asm/mach/flash.h>
 
 #include <asm/arch/gpio.h>
 #include <asm/arch/mux.h>
 #include <asm/arch/usb.h>
+#include <asm/arch/tc.h>
+#include <asm/arch/dma.h>
 #include <asm/arch/board.h>
+#include <asm/arch/irda.h>
+#include <asm/arch/keypad.h>
 #include <asm/arch/common.h>
+#include <asm/arch/mcbsp.h>
+#include <asm/arch/omap-alsa.h>
 
-static void __init omap_generic_init_irq(void)
+static void __init omap_palmte_init_irq(void)
 {
 	omap1_init_common_hw();
 	omap_init_irq();
+	omap_gpio_init();
 }
 
+static int palmte_keymap[] = {
+	KEY(0, 0, KEY_F1),
+	KEY(0, 1, KEY_F2),
+	KEY(0, 2, KEY_F3),
+	KEY(0, 3, KEY_F4),
+	KEY(0, 4, KEY_POWER),
+	KEY(1, 0, KEY_LEFT),
+	KEY(1, 1, KEY_DOWN),
+	KEY(1, 2, KEY_UP),
+	KEY(1, 3, KEY_RIGHT),
+	KEY(1, 4, KEY_CENTER),
+	0,
+};
+
+static struct omap_kp_platform_data palmte_kp_data = {
+	.rows	= 8,
+	.cols	= 8,
+	.keymap = palmte_keymap,
+	.rep	= 1,
+	.delay	= 12,
+};
+
+static struct resource palmte_kp_resources[] = {
+	[0]	= {
+		.start	= INT_KEYBOARD,
+		.end	= INT_KEYBOARD,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device palmte_kp_device = {
+	.name		= "omap-keypad",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &palmte_kp_data,
+	},
+	.num_resources	= ARRAY_SIZE(palmte_kp_resources),
+	.resource	= palmte_kp_resources,
+};
+
+static struct mtd_partition palmte_rom_partitions[] = {
+	/* PalmOS "Small ROM", contains the bootloader and the debugger */
+	{
+		.name		= "smallrom",
+		.offset		= 0,
+		.size		= 0xa000,
+		.mask_flags	= MTD_WRITEABLE,
+	},
+	/* PalmOS "Big ROM", a filesystem with all the OS code and data */
+	{
+		.name		= "bigrom",
+		.offset		= SZ_128K,
+		/*
+		 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
+		 * 0x7b0000 bytes in the English-only ("enUS") version.
+		 */
+		.size		= 0x7b0000,
+		.mask_flags	= MTD_WRITEABLE,
+	},
+};
+
+static struct flash_platform_data palmte_rom_data = {
+	.map_name	= "map_rom",
+	.width		= 2,
+	.parts		= palmte_rom_partitions,
+	.nr_parts	= ARRAY_SIZE(palmte_rom_partitions),
+};
+
+static struct resource palmte_rom_resource = {
+	.start		= OMAP_CS0_PHYS,
+	.end		= OMAP_CS0_PHYS + SZ_8M - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device palmte_rom_device = {
+	.name		= "omapflash",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &palmte_rom_data,
+	},
+	.num_resources	= 1,
+	.resource	= &palmte_rom_resource,
+};
+
 static struct platform_device palmte_lcd_device = {
 	.name		= "lcd_palmte",
 	.id		= -1,
 };
 
+static struct omap_backlight_config palmte_backlight_config = {
+	.default_intensity	= 0xa0,
+};
+
+static struct platform_device palmte_backlight_device = {
+	.name		= "omap-bl",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &palmte_backlight_config,
+	},
+};
+
+static struct omap_irda_config palmte_irda_config = {
+	.transceiver_cap	= IR_SIRMODE,
+	.rx_channel		= OMAP_DMA_UART3_RX,
+	.tx_channel		= OMAP_DMA_UART3_TX,
+	.dest_start		= UART3_THR,
+	.src_start		= UART3_RHR,
+	.tx_trigger		= 0,
+	.rx_trigger		= 0,
+};
+
+static struct resource palmte_irda_resources[] = {
+	[0]	= {
+		.start	= INT_UART3,
+		.end	= INT_UART3,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device palmte_irda_device = {
+	.name		= "omapirda",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &palmte_irda_config,
+	},
+	.num_resources	= ARRAY_SIZE(palmte_irda_resources),
+	.resource	= palmte_irda_resources,
+};
+
 static struct platform_device *devices[] __initdata = {
+	&palmte_rom_device,
+	&palmte_kp_device,
 	&palmte_lcd_device,
+	&palmte_backlight_device,
+	&palmte_irda_device,
 };
 
 static struct omap_usb_config palmte_usb_config __initdata = {
-	.register_dev	= 1,
+	.register_dev	= 1,	/* Mini-B only receptacle */
 	.hmc_mode	= 0,
-	.pins[0]	= 3,
+	.pins[0]	= 2,
 };
 
 static struct omap_mmc_config palmte_mmc_config __initdata = {
-	.mmc [0] = {
+	.mmc[0]		= {
 		.enabled 	= 1,
-		.wire4		= 1,
-		.wp_pin		= OMAP_MPUIO(3),
-		.power_pin	= -1,
-		.switch_pin	= -1,
+		.wp_pin		= PALMTE_MMC_WP_GPIO,
+		.power_pin	= PALMTE_MMC_POWER_GPIO,
+		.switch_pin	= PALMTE_MMC_SWITCH_GPIO,
 	},
 };
 
@@ -67,21 +207,222 @@ static struct omap_lcd_config palmte_lcd_config __initdata = {
 	.ctrl_name	= "internal",
 };
 
+static struct omap_uart_config palmte_uart_config __initdata = {
+	.enabled_uarts = (1 << 0) | (1 << 1) | (0 << 2),
+};
+
+static struct omap_mcbsp_reg_cfg palmte_mcbsp1_regs = {
+	.spcr2	= FRST | GRST | XRST | XINTM(3),
+	.xcr2	= XDATDLY(1) | XFIG,
+	.xcr1	= XWDLEN1(OMAP_MCBSP_WORD_32),
+	.pcr0	= SCLKME | FSXP | CLKXP,
+};
+
+static struct omap_alsa_codec_config palmte_alsa_config = {
+	.name			= "TSC2102 audio",
+	.mcbsp_regs_alsa	= &palmte_mcbsp1_regs,
+	.codec_configure_dev	= NULL,	/* tsc2102_configure, */
+	.codec_set_samplerate	= NULL,	/* tsc2102_set_samplerate, */
+	.codec_clock_setup	= NULL,	/* tsc2102_clock_setup, */
+	.codec_clock_on		= NULL,	/* tsc2102_clock_on, */
+	.codec_clock_off	= NULL,	/* tsc2102_clock_off, */
+	.get_default_samplerate	= NULL,	/* tsc2102_get_default_samplerate, */
+};
+
+#ifdef CONFIG_APM
+/*
+ * Values measured in 10 minute intervals averaged over 10 samples.
+ * May differ slightly from device to device but should be accurate
+ * enough to give basic idea of battery life left and trigger
+ * potential alerts.
+ */
+static const int palmte_battery_sample[] = {
+	2194, 2157, 2138, 2120,
+	2104, 2089, 2075, 2061,
+	2048, 2038, 2026, 2016,
+	2008, 1998, 1989, 1980,
+	1970, 1958, 1945, 1928,
+	1910, 1888, 1860, 1827,
+	1791, 1751, 1709, 1656,
+};
+
+#define INTERVAL		10
+#define BATTERY_HIGH_TRESHOLD	66
+#define BATTERY_LOW_TRESHOLD	33
+
+static void palmte_get_power_status(struct apm_power_info *info, int *battery)
+{
+	int charging, batt, hi, lo, mid;
+
+	charging = !omap_get_gpio_datain(PALMTE_DC_GPIO);
+	batt = battery[0];
+	if (charging)
+		batt -= 60;
+
+	hi = ARRAY_SIZE(palmte_battery_sample);
+	lo = 0;
+
+	info->battery_flag = 0;
+	info->units = APM_UNITS_MINS;
+
+	if (batt > palmte_battery_sample[lo]) {
+		info->battery_life = 100;
+		info->time = INTERVAL * ARRAY_SIZE(palmte_battery_sample);
+	} else if (batt <= palmte_battery_sample[hi - 1]) {
+		info->battery_life = 0;
+		info->time = 0;
+	} else {
+		while (hi > lo + 1) {
+			mid = (hi + lo) >> 2;
+			if (batt <= palmte_battery_sample[mid])
+				lo = mid;
+			else
+				hi = mid;
+		}
+
+		mid = palmte_battery_sample[lo] - palmte_battery_sample[hi];
+		hi = palmte_battery_sample[lo] - batt;
+		info->battery_life = 100 - (100 * lo + 100 * hi / mid) /
+			ARRAY_SIZE(palmte_battery_sample);
+		info->time = INTERVAL * (ARRAY_SIZE(palmte_battery_sample) -
+				lo) - INTERVAL * hi / mid;
+	}
+
+	if (charging) {
+		info->ac_line_status = APM_AC_ONLINE;
+		info->battery_status = APM_BATTERY_STATUS_CHARGING;
+		info->battery_flag |= APM_BATTERY_FLAG_CHARGING;
+	} else {
+		info->ac_line_status = APM_AC_OFFLINE;
+		if (info->battery_life > BATTERY_HIGH_TRESHOLD)
+			info->battery_status = APM_BATTERY_STATUS_HIGH;
+		else if (info->battery_life > BATTERY_LOW_TRESHOLD)
+			info->battery_status = APM_BATTERY_STATUS_LOW;
+		else
+			info->battery_status = APM_BATTERY_STATUS_CRITICAL;
+	}
+
+	if (info->battery_life > BATTERY_HIGH_TRESHOLD)
+		info->battery_flag |= APM_BATTERY_FLAG_HIGH;
+	else if (info->battery_life > BATTERY_LOW_TRESHOLD)
+		info->battery_flag |= APM_BATTERY_FLAG_LOW;
+	else
+		info->battery_flag |= APM_BATTERY_FLAG_CRITICAL;
+}
+#else
+#define palmte_get_power_status	NULL
+#endif
+
+static struct tsc2102_config palmte_tsc2102_config = {
+	.use_internal	= 0,
+	.monitor	= TSC_BAT1 | TSC_AUX | TSC_TEMP,
+	.temp_at25c	= { 2200, 2615 },
+	.apm_report	= palmte_get_power_status,
+	.alsa_config	= &palmte_alsa_config,
+};
+
 static struct omap_board_config_kernel palmte_config[] = {
-	{ OMAP_TAG_USB, &palmte_usb_config },
-	{ OMAP_TAG_MMC,	&palmte_mmc_config },
-	{ OMAP_TAG_LCD,	&palmte_lcd_config },
+	{ OMAP_TAG_USB,		&palmte_usb_config },
+	{ OMAP_TAG_MMC,		&palmte_mmc_config },
+	{ OMAP_TAG_LCD,		&palmte_lcd_config },
+	{ OMAP_TAG_UART,	&palmte_uart_config },
 };
 
-static void __init omap_generic_init(void)
+static struct spi_board_info palmte_spi_info[] __initdata = {
+	{
+		.modalias	= "tsc2102",
+		.bus_num	= 2,	/* uWire (officially) */
+		.chip_select	= 0,	/* As opposed to 3 */
+		.irq		= OMAP_GPIO_IRQ(PALMTE_PINTDAV_GPIO),
+		.platform_data	= &palmte_tsc2102_config,
+		.max_speed_hz	= 8000000,
+	},
+};
+
+/* Periodically check for changes on important input pins */
+struct timer_list palmte_pin_timer;
+int prev_power, prev_headphones;
+
+static void palmte_pin_handler(unsigned long data) {
+	int power, headphones;
+
+	power = !omap_get_gpio_datain(PALMTE_DC_GPIO);
+	headphones = omap_get_gpio_datain(PALMTE_HEADPHONES_GPIO);
+
+	if (power && !prev_power)
+		printk(KERN_INFO "PM: cable connected\n");
+	else if (!power && prev_power)
+		printk(KERN_INFO "PM: cable disconnected\n");
+
+	if (headphones && !prev_headphones) {
+		/* Headphones connected, disable speaker */
+		omap_set_gpio_dataout(PALMTE_SPEAKER_GPIO, 0);
+		printk(KERN_INFO "PM: speaker off\n");
+	} else if (!headphones && prev_headphones) {
+		/* Headphones unplugged, re-enable speaker */
+		omap_set_gpio_dataout(PALMTE_SPEAKER_GPIO, 1);
+		printk(KERN_INFO "PM: speaker on\n");
+	}
+
+	prev_power = power;
+	prev_headphones = headphones;
+	mod_timer(&palmte_pin_timer, jiffies + msecs_to_jiffies(500));
+}
+
+static void __init palmte_gpio_setup(void)
+{
+	/* Set TSC2102 PINTDAV pin as input */
+	if (omap_request_gpio(PALMTE_PINTDAV_GPIO)) {
+		printk(KERN_ERR "Could not reserve PINTDAV GPIO!\n");
+		return;
+	}
+	omap_set_gpio_direction(PALMTE_PINTDAV_GPIO, 1);
+
+	/* Monitor cable-connected signals */
+	if (omap_request_gpio(PALMTE_DC_GPIO) ||
+			omap_request_gpio(PALMTE_USB_OR_DC_GPIO) ||
+			omap_request_gpio(PALMTE_USBDETECT_GPIO)) {
+		printk(KERN_ERR "Could not reserve cable signal GPIO!\n");
+		return;
+	}
+	omap_set_gpio_direction(PALMTE_DC_GPIO, 1);
+	omap_set_gpio_direction(PALMTE_USB_OR_DC_GPIO, 1);
+	omap_set_gpio_direction(PALMTE_USBDETECT_GPIO, 1);
+
+	/* Set speaker-enable pin as output */
+	if (omap_request_gpio(PALMTE_SPEAKER_GPIO)) {
+		printk(KERN_ERR "Could not reserve speaker GPIO!\n");
+		return;
+	}
+	omap_set_gpio_direction(PALMTE_SPEAKER_GPIO, 0);
+
+	/* Monitor the headphones-connected signal */
+	if (omap_request_gpio(PALMTE_HEADPHONES_GPIO)) {
+		printk(KERN_ERR "Could not reserve headphones signal GPIO!\n");
+		return;
+	}
+	omap_set_gpio_direction(PALMTE_HEADPHONES_GPIO, 1);
+
+	prev_power = omap_get_gpio_datain(PALMTE_DC_GPIO);
+	prev_headphones = !omap_get_gpio_datain(PALMTE_HEADPHONES_GPIO);
+	setup_timer(&palmte_pin_timer, palmte_pin_handler, 0);
+	palmte_pin_handler(0);
+}
+
+static void __init omap_palmte_init(void)
 {
 	omap_board_config = palmte_config;
 	omap_board_config_size = ARRAY_SIZE(palmte_config);
 
 	platform_add_devices(devices, ARRAY_SIZE(devices));
+
+	spi_register_board_info(palmte_spi_info, ARRAY_SIZE(palmte_spi_info));
+
+	omap_serial_init();
+	palmte_gpio_setup();
 }
 
-static void __init omap_generic_map_io(void)
+static void __init omap_palmte_map_io(void)
 {
 	omap1_map_common_io();
 }
@@ -90,8 +431,8 @@ MACHINE_START(OMAP_PALMTE, "OMAP310 based Palm Tungsten E")
 	.phys_io	= 0xfff00000,
 	.io_pg_offst	= ((0xfef00000) >> 18) & 0xfffc,
 	.boot_params	= 0x10000100,
-	.map_io		= omap_generic_map_io,
-	.init_irq	= omap_generic_init_irq,
-	.init_machine	= omap_generic_init,
+	.map_io		= omap_palmte_map_io,
+	.init_irq	= omap_palmte_init_irq,
+	.init_machine	= omap_palmte_init,
 	.timer		= &omap_timer,
 MACHINE_END