From: Robert Schwebel Date: Tue, 8 Jan 2008 07:44:23 +0000 (+0100) Subject: [ARM] 4744/1: pcm027: add support for phyCORE-PXA270 CPU module X-Git-Tag: v2.6.25-rc1~1175^2^2~6 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34e31d871ee4b6a9f6c5504da7d6dcc24967844c;p=linux-2.6 [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 Signed-off-by: Russell King --- diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig index c73da5e330..958303c100 100644 --- a/arch/arm/mach-pxa/Kconfig +++ b/arch/arm/mach-pxa/Kconfig @@ -123,6 +123,11 @@ config MACH_MAGICIAN select PXA27x select IWMMXT +config MACH_PCM027 + bool "Phytec phyCORE-PXA270 CPU module (PCM-027)" + select PXA27x + select IWMMXT + endchoice if PXA_SHARPSL diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile index 5e9aec5764..61d301805c 100644 --- a/arch/arm/mach-pxa/Makefile +++ b/arch/arm/mach-pxa/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o cor obj-$(CONFIG_PXA_SHARP_Cxx00) += spitz.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o spitz_pm.o obj-$(CONFIG_MACH_AKITA) += akita-ioexp.o obj-$(CONFIG_MACH_POODLE) += poodle.o corgi_ssp.o +obj-$(CONFIG_MACH_PCM027) += pcm027.o obj-$(CONFIG_MACH_TOSA) += tosa.o obj-$(CONFIG_MACH_EM_X270) += em-x270.o obj-$(CONFIG_MACH_MAGICIAN) += magician.o diff --git a/arch/arm/mach-pxa/pcm027.c b/arch/arm/mach-pxa/pcm027.c new file mode 100644 index 0000000000..540c3bba5f --- /dev/null +++ b/arch/arm/mach-pxa/pcm027.c @@ -0,0 +1,216 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#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 diff --git a/include/asm-arm/arch-pxa/irqs.h b/include/asm-arm/arch-pxa/irqs.h index b76ee6d1f5..c562b972a4 100644 --- a/include/asm-arm/arch-pxa/irqs.h +++ b/include/asm-arm/arch-pxa/irqs.h @@ -180,7 +180,8 @@ #define NR_IRQS (IRQ_LOCOMO_SPI_TEND + 1) #elif defined(CONFIG_ARCH_LUBBOCK) || \ defined(CONFIG_MACH_LOGICPD_PXA270) || \ - defined(CONFIG_MACH_MAINSTONE) + defined(CONFIG_MACH_MAINSTONE) || \ + defined(CONFIG_MACH_PCM027) #define NR_IRQS (IRQ_BOARD_END) #else #define NR_IRQS (IRQ_BOARD_START) @@ -227,6 +228,13 @@ #define IRQ_LOCOMO_LT_BASE (IRQ_BOARD_START + 2) #define IRQ_LOCOMO_SPI_BASE (IRQ_BOARD_START + 3) +/* phyCORE-PXA270 (PCM027) Interrupts */ +#define PCM027_IRQ(x) (IRQ_BOARD_START + (x)) +#define PCM027_BTDET_IRQ PCM027_IRQ(0) +#define PCM027_FF_RI_IRQ PCM027_IRQ(1) +#define PCM027_MMCDET_IRQ PCM027_IRQ(2) +#define PCM027_PM_5V_IRQ PCM027_IRQ(3) + /* ITE8152 irqs */ /* add IT8152 IRQs beyond BOARD_END */ #ifdef CONFIG_PCI_HOST_ITE8152 diff --git a/include/asm-arm/arch-pxa/pcm027.h b/include/asm-arm/arch-pxa/pcm027.h new file mode 100644 index 0000000000..7beae1472c --- /dev/null +++ b/include/asm-arm/arch-pxa/pcm027.h @@ -0,0 +1,75 @@ +/* + * linux/include/asm-arm/arch-pxa/pcm027.h + * + * (c) 2003 Phytec Messtechnik GmbH + * (c) 2007 Juergen Beisert + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * Definitions of CPU card resources only + */ + +/* I2C RTC */ +#define PCM027_RTC_IRQ_GPIO 0 +#define PCM027_RTC_IRQ IRQ_GPIO(PCM027_RTC_IRQ_GPIO) +#define PCM027_RTC_IRQ_EDGE IRQ_TYPE_EDGE_FALLING +#define ADR_PCM027_RTC 0x51 /* I2C address */ + +/* I2C EEPROM */ +#define ADR_PCM027_EEPROM 0x54 /* I2C address */ + +/* Ethernet chip (SMSC91C111) */ +#define PCM027_ETH_IRQ_GPIO 52 +#define PCM027_ETH_IRQ IRQ_GPIO(PCM027_ETH_IRQ_GPIO) +#define PCM027_ETH_IRQ_EDGE IRQ_TYPE_EDGE_RISING +#define PCM027_ETH_PHYS PXA_CS5_PHYS +#define PCM027_ETH_SIZE (1*1024*1024) + +/* CAN controller SJA1000 (unsupported yet) */ +#define PCM027_CAN_IRQ_GPIO 114 +#define PCM027_CAN_IRQ IRQ_GPIO(PCM027_CAN_IRQ_GPIO) +#define PCM027_CAN_IRQ_EDGE IRQ_TYPE_EDGE_FALLING +#define PCM027_CAN_PHYS 0x22000000 +#define PCM027_CAN_SIZE 0x100 + +/* SPI GPIO expander (unsupported yet) */ +#define PCM027_EGPIO_IRQ_GPIO 27 +#define PCM027_EGPIO_IRQ IRQ_GPIO(PCM027_EGPIO_IRQ_GPIO) +#define PCM027_EGPIO_IRQ_EDGE IRQ_TYPE_EDGE_FALLING +#define PCM027_EGPIO_CS 24 +/* + * TODO: Switch this pin from dedicated usage to GPIO if + * more than the MAX7301 device is connected to this SPI bus + */ +#define PCM027_EGPIO_CS_MODE GPIO24_SFRM_MD + +/* Flash memory */ +#define PCM027_FLASH_PHYS 0x00000000 +#define PCM027_FLASH_SIZE 0x02000000 + +/* onboard LEDs connected to GPIO */ +#define PCM027_LED_CPU 90 +#define PCM027_LED_HEARD_BEAT 91 + +/* + * This CPU module needs a baseboard to work. After basic initializing + * its own devices, it calls baseboard's init function. + * TODO: Add your own basebaord init function and call it from + * inside pcm027_init(). This example here is for the developmen board. + * Refer pcm990-baseboard.c + */ +extern void pcm990_baseboard_init(void);