arch/arm/mach-pxa/pcm027.c - kernel/bruno - Git at Google

 /*
  *  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/spi/max7301.h>
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/leds.h>

 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <mach/pxa27x.h>
 #include <mach/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
  */

 static unsigned long pcm027_pin_config[] __initdata = {
 	/* Chip Selects */
 	GPIO20_nSDCS_2,
 	GPIO21_nSDCS_3,
 	GPIO15_nCS_1,
 	GPIO78_nCS_2,
 	GPIO80_nCS_4,
 	GPIO33_nCS_5,	/* Ethernet */

 	/* I2C */
 	GPIO117_I2C_SCL,
 	GPIO118_I2C_SDA,

 	/* GPIO */
 	GPIO52_GPIO,	/* IRQ from network controller */
 #ifdef CONFIG_LEDS_GPIO
 	GPIO90_GPIO,	/* PCM027_LED_CPU */
 	GPIO91_GPIO,	/* PCM027_LED_HEART_BEAT */
 #endif
 	GPIO114_GPIO,	/* IRQ from CAN controller */
 };

 /*
  * 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,
 };

 /*
  * SPI host and devices
  */
 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 	.num_chipselect	= 1,
 };

 static struct max7301_platform_data max7301_info = {
 	.base = -1,
 };

 /* bus_num must match id in pxa2xx_set_spi_info() call */
 static struct spi_board_info spi_board_info[] __initdata = {
 	{
 		.modalias	= "max7301",
 		.platform_data	= &max7301_info,
 		.max_speed_hz	= 13000000,
 		.bus_num	= 1,
 		.chip_select	= 0,
 		.mode		= SPI_MODE_0,
 	},
 };

 /*
  * NOR flash
  */
 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;

 	pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));

 	pxa_set_ffuart_info(NULL);
 	pxa_set_btuart_info(NULL);
 	pxa_set_stuart_info(NULL);

 	platform_add_devices(devices, ARRAY_SIZE(devices));

 	/* at last call the baseboard to initialize itself */
 #ifdef CONFIG_MACH_PCM990_BASEBOARD
 	pcm990_baseboard_init();
 #endif

 	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 }

 static void __init pcm027_map_io(void)
 {
 	pxa27x_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 */
 	.atag_offset	= 0x100,
 	.map_io		= pcm027_map_io,
 	.nr_irqs	= PCM027_NR_IRQS,
 	.init_irq	= pxa27x_init_irq,
 	.handle_irq	= pxa27x_handle_irq,
 	.init_time	= pxa_timer_init,
 	.init_machine	= pcm027_init,
 	.restart	= pxa_restart,
 MACHINE_END
	/*
	* 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/spi/max7301.h>
	#include <linux/spi/pxa2xx_spi.h>
	#include <linux/leds.h>

	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>
	#include <mach/pxa27x.h>
	#include <mach/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
	*/

	static unsigned long pcm027_pin_config[] __initdata = {
	/* Chip Selects */
	GPIO20_nSDCS_2,
	GPIO21_nSDCS_3,
	GPIO15_nCS_1,
	GPIO78_nCS_2,
	GPIO80_nCS_4,
	GPIO33_nCS_5, /* Ethernet */

	/* I2C */
	GPIO117_I2C_SCL,
	GPIO118_I2C_SDA,

	/* GPIO */
	GPIO52_GPIO, /* IRQ from network controller */
	#ifdef CONFIG_LEDS_GPIO
	GPIO90_GPIO, /* PCM027_LED_CPU */
	GPIO91_GPIO, /* PCM027_LED_HEART_BEAT */
	#endif
	GPIO114_GPIO, /* IRQ from CAN controller */
	};

	/*
	* 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,
	};

	/*
	* SPI host and devices
	*/
	static struct pxa2xx_spi_master pxa_ssp_master_info = {
	.num_chipselect = 1,
	};

	static struct max7301_platform_data max7301_info = {
	.base = -1,
	};

	/* bus_num must match id in pxa2xx_set_spi_info() call */
	static struct spi_board_info spi_board_info[] __initdata = {
	{
	.modalias = "max7301",
	.platform_data = &max7301_info,
	.max_speed_hz = 13000000,
	.bus_num = 1,
	.chip_select = 0,
	.mode = SPI_MODE_0,
	},
	};

	/*
	* NOR flash
	*/
	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;

	pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));

	pxa_set_ffuart_info(NULL);
	pxa_set_btuart_info(NULL);
	pxa_set_stuart_info(NULL);

	platform_add_devices(devices, ARRAY_SIZE(devices));

	/* at last call the baseboard to initialize itself */
	#ifdef CONFIG_MACH_PCM990_BASEBOARD
	pcm990_baseboard_init();
	#endif

	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
	}

	static void __init pcm027_map_io(void)
	{
	pxa27x_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 */
	.atag_offset = 0x100,
	.map_io = pcm027_map_io,
	.nr_irqs = PCM027_NR_IRQS,
	.init_irq = pxa27x_init_irq,
	.handle_irq = pxa27x_handle_irq,
	.init_time = pxa_timer_init,
	.init_machine = pcm027_init,
	.restart = pxa_restart,
	MACHINE_END