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authorRobert Schwebel <robert@schwebel.de>2008-01-08 08:44:23 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-28 13:13:20 +0000
commit34e31d871ee4b6a9f6c5504da7d6dcc24967844c (patch)
treeab6f518113f9d13445c514ad5f36f0c5e2b6167f /arch/arm/mach-pxa/pcm027.c
parent[NET] smc91x: Make smc91x use IRQ resource trigger flags (diff)
downloadlinux-dev-34e31d871ee4b6a9f6c5504da7d6dcc24967844c.tar.xz
linux-dev-34e31d871ee4b6a9f6c5504da7d6dcc24967844c.zip
[ARM] 4744/1: pcm027: add support for phyCORE-PXA270 CPU module
This patch adds main support for the generic phyCORE-PXA270 CPU module (aka PCM-027). Its as generic as possible to support any kind of baseboard. Note: Neither the CPU module nor the pcm027.c implementation can work without a baseboard support. Baseboard support can be added by the PCM-990 or any custom variant. V2: After comments by Eric Miao: - Currently unsupported devices moved into separate patch - direct call of baseboard initialisation V3: After comments by Russell King - sort include files - setting RTC bit for power control removed - style problems fixed (discovered by checkpatch.pl) Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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-rw-r--r--arch/arm/mach-pxa/pcm027.c216
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diff --git a/arch/arm/mach-pxa/pcm027.c b/arch/arm/mach-pxa/pcm027.c
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+/*
+ * linux/arch/arm/mach-pxa/pcm027.c
+ * Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027).
+ *
+ * Refer
+ * http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html
+ * for additional hardware info
+ *
+ * Author: Juergen Kilb
+ * Created: April 05, 2005
+ * Copyright: Phytec Messtechnik GmbH
+ * e-Mail: armlinux@phytec.de
+ *
+ * based on Intel Mainstone Board
+ *
+ * Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
+ *
+ * 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.
+ */
+
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/spi/spi.h>
+#include <linux/leds.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx_spi.h>
+#include <asm/arch/pcm027.h>
+#include "generic.h"
+
+/*
+ * ABSTRACT:
+ *
+ * The PXA270 processor comes with a bunch of hardware on its silicon.
+ * Not all of this hardware can be used at the same time and not all
+ * is routed to module's connectors. Also it depends on the baseboard, what
+ * kind of hardware can be used in which way.
+ * -> So this file supports the main devices on the CPU card only!
+ * Refer pcm990-baseboard.c how to extend this features to get a full
+ * blown system with many common interfaces.
+ *
+ * The PCM-027 supports the following interfaces through its connectors and
+ * will be used in pcm990-baseboard.c:
+ *
+ * - LCD support
+ * - MMC support
+ * - IDE/CF card
+ * - FFUART
+ * - BTUART
+ * - IRUART
+ * - AC97
+ * - SSP
+ * - SSP3
+ *
+ * Claimed GPIOs:
+ * GPIO0 -> IRQ input from RTC
+ * GPIO2 -> SYS_ENA*)
+ * GPIO3 -> PWR_SCL
+ * GPIO4 -> PWR_SDA
+ * GPIO5 -> PowerCap0*)
+ * GPIO6 -> PowerCap1*)
+ * GPIO7 -> PowerCap2*)
+ * GPIO8 -> PowerCap3*)
+ * GPIO15 -> /CS1
+ * GPIO20 -> /CS2
+ * GPIO21 -> /CS3
+ * GPIO33 -> /CS5 network controller select
+ * GPIO52 -> IRQ from network controller
+ * GPIO78 -> /CS2
+ * GPIO80 -> /CS4
+ * GPIO90 -> LED0
+ * GPIO91 -> LED1
+ * GPIO114 -> IRQ from CAN controller
+ * GPIO117 -> SCL
+ * GPIO118 -> SDA
+ *
+ * *) CPU internal use only
+ */
+
+/*
+ * SMC91x network controller specific stuff
+ */
+static struct resource smc91x_resources[] = {
+ [0] = {
+ .start = PCM027_ETH_PHYS + 0x300,
+ .end = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = PCM027_ETH_IRQ,
+ .end = PCM027_ETH_IRQ,
+ /* note: smc91x's driver doesn't use the trigger bits yet */
+ .flags = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
+ }
+};
+
+static struct platform_device smc91x_device = {
+ .name = "smc91x",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(smc91x_resources),
+ .resource = smc91x_resources,
+};
+
+static struct physmap_flash_data pcm027_flash_data = {
+ .width = 4,
+};
+
+static struct resource pcm027_flash_resource = {
+ .start = PCM027_FLASH_PHYS,
+ .end = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device pcm027_flash = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &pcm027_flash_data,
+ },
+ .resource = &pcm027_flash_resource,
+ .num_resources = 1,
+};
+
+#ifdef CONFIG_LEDS_GPIO
+
+static struct gpio_led pcm027_led[] = {
+ {
+ .name = "led0:red", /* FIXME */
+ .gpio = PCM027_LED_CPU
+ },
+ {
+ .name = "led1:green", /* FIXME */
+ .gpio = PCM027_LED_HEARD_BEAT
+ },
+};
+
+static struct gpio_led_platform_data pcm027_led_data = {
+ .num_leds = ARRAY_SIZE(pcm027_led),
+ .leds = pcm027_led
+};
+
+static struct platform_device pcm027_led_dev = {
+ .name = "leds-gpio",
+ .id = 0,
+ .dev = {
+ .platform_data = &pcm027_led_data,
+ },
+};
+
+#endif /* CONFIG_LEDS_GPIO */
+
+/*
+ * declare the available device resources on this board
+ */
+static struct platform_device *devices[] __initdata = {
+ &smc91x_device,
+ &pcm027_flash,
+#ifdef CONFIG_LEDS_GPIO
+ &pcm027_led_dev
+#endif
+};
+
+/*
+ * pcm027_init - breath some life into the board
+ */
+static void __init pcm027_init(void)
+{
+ /* system bus arbiter setting
+ * - Core_Park
+ * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
+ */
+ ARB_CNTRL = ARB_CORE_PARK | 0x234;
+
+ platform_add_devices(devices, ARRAY_SIZE(devices));
+
+ /* LEDs (on demand only) */
+#ifdef CONFIG_LEDS_GPIO
+ pxa_gpio_mode(PCM027_LED_CPU | GPIO_OUT);
+ pxa_gpio_mode(PCM027_LED_HEARD_BEAT | GPIO_OUT);
+#endif /* CONFIG_LEDS_GPIO */
+
+ /* at last call the baseboard to initialize itself */
+#ifdef CONFIG_MACH_PCM990_BASEBOARD
+ pcm990_baseboard_init();
+#endif
+}
+
+static void __init pcm027_map_io(void)
+{
+ pxa_map_io();
+
+ /* initialize sleep mode regs (wake-up sources, etc) */
+ PGSR0 = 0x01308000;
+ PGSR1 = 0x00CF0002;
+ PGSR2 = 0x0E294000;
+ PGSR3 = 0x0000C000;
+ PWER = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
+ PRER = 0x00000000;
+ PFER = 0x00000003;
+}
+
+MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
+ /* Maintainer: Pengutronix */
+ .boot_params = 0xa0000100,
+ .phys_io = 0x40000000,
+ .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
+ .map_io = pcm027_map_io,
+ .init_irq = pxa27x_init_irq,
+ .timer = &pxa_timer,
+ .init_machine = pcm027_init,
+MACHINE_END