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021db8e2bd
* 'next-spi' of git://git.secretlab.ca/git/linux-2.6: (77 commits) spi/omap: Fix DMA API usage in OMAP MCSPI driver spi/imx: correct the test on platform_get_irq() return value spi/topcliff: Typo fix threhold to threshold spi/dw_spi Typo change diable to disable. spi/fsl_espi: change the read behaviour of the SPIRF spi/mpc52xx-psc-spi: move probe/remove to proper sections spi/dw_spi: add DMA support spi/dw_spi: change to EXPORT_SYMBOL_GPL for exported APIs spi/dw_spi: Fix too short timeout in spi polling loop spi/pl022: convert running variable spi/pl022: convert busy flag to a bool spi/pl022: pass the returned sglen to the DMA engine spi/pl022: map the buffers on the DMA engine spi/topcliff_pch: Fix data transfer issue spi/imx: remove autodetection spi/pxa2xx: pass of_node to spi device and set a parent device spi/pxa2xx: Modify RX-Tresh instead of busy-loop for the remaining RX bytes. spi/pxa2xx: Add chipselect support for Sodaville spi/pxa2xx: Consider CE4100's FIFO depth spi/pxa2xx: Add CE4100 support ...
268 lines
6.0 KiB
C
268 lines
6.0 KiB
C
/*
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* linux/arch/arm/mach-pxa/pcm027.c
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* Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027).
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*
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* Refer
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* http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html
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* for additional hardware info
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*
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* Author: Juergen Kilb
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* Created: April 05, 2005
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* Copyright: Phytec Messtechnik GmbH
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* e-Mail: armlinux@phytec.de
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*
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* based on Intel Mainstone Board
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*
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* Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/irq.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/physmap.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/max7301.h>
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#include <linux/spi/pxa2xx_spi.h>
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#include <linux/leds.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/pxa27x.h>
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#include <mach/pcm027.h>
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#include "generic.h"
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/*
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* ABSTRACT:
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*
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* The PXA270 processor comes with a bunch of hardware on its silicon.
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* Not all of this hardware can be used at the same time and not all
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* is routed to module's connectors. Also it depends on the baseboard, what
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* kind of hardware can be used in which way.
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* -> So this file supports the main devices on the CPU card only!
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* Refer pcm990-baseboard.c how to extend this features to get a full
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* blown system with many common interfaces.
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*
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* The PCM-027 supports the following interfaces through its connectors and
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* will be used in pcm990-baseboard.c:
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*
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* - LCD support
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* - MMC support
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* - IDE/CF card
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* - FFUART
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* - BTUART
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* - IRUART
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* - AC97
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* - SSP
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* - SSP3
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*
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* Claimed GPIOs:
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* GPIO0 -> IRQ input from RTC
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* GPIO2 -> SYS_ENA*)
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* GPIO3 -> PWR_SCL
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* GPIO4 -> PWR_SDA
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* GPIO5 -> PowerCap0*)
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* GPIO6 -> PowerCap1*)
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* GPIO7 -> PowerCap2*)
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* GPIO8 -> PowerCap3*)
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* GPIO15 -> /CS1
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* GPIO20 -> /CS2
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* GPIO21 -> /CS3
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* GPIO33 -> /CS5 network controller select
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* GPIO52 -> IRQ from network controller
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* GPIO78 -> /CS2
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* GPIO80 -> /CS4
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* GPIO90 -> LED0
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* GPIO91 -> LED1
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* GPIO114 -> IRQ from CAN controller
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* GPIO117 -> SCL
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* GPIO118 -> SDA
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*
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* *) CPU internal use only
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*/
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static unsigned long pcm027_pin_config[] __initdata = {
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/* Chip Selects */
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GPIO20_nSDCS_2,
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GPIO21_nSDCS_3,
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GPIO15_nCS_1,
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GPIO78_nCS_2,
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GPIO80_nCS_4,
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GPIO33_nCS_5, /* Ethernet */
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/* I2C */
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GPIO117_I2C_SCL,
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GPIO118_I2C_SDA,
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/* GPIO */
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GPIO52_GPIO, /* IRQ from network controller */
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#ifdef CONFIG_LEDS_GPIO
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GPIO90_GPIO, /* PCM027_LED_CPU */
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GPIO91_GPIO, /* PCM027_LED_HEART_BEAT */
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#endif
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GPIO114_GPIO, /* IRQ from CAN controller */
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};
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/*
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* SMC91x network controller specific stuff
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*/
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static struct resource smc91x_resources[] = {
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[0] = {
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.start = PCM027_ETH_PHYS + 0x300,
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.end = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = PCM027_ETH_IRQ,
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.end = PCM027_ETH_IRQ,
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/* note: smc91x's driver doesn't use the trigger bits yet */
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.flags = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
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}
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = 0,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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};
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/*
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* SPI host and devices
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*/
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static struct pxa2xx_spi_master pxa_ssp_master_info = {
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.num_chipselect = 1,
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};
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static struct max7301_platform_data max7301_info = {
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.base = -1,
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};
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/* bus_num must match id in pxa2xx_set_spi_info() call */
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static struct spi_board_info spi_board_info[] __initdata = {
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{
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.modalias = "max7301",
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.platform_data = &max7301_info,
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.max_speed_hz = 13000000,
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.bus_num = 1,
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.chip_select = 0,
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.mode = SPI_MODE_0,
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},
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};
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/*
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* NOR flash
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*/
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static struct physmap_flash_data pcm027_flash_data = {
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.width = 4,
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};
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static struct resource pcm027_flash_resource = {
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.start = PCM027_FLASH_PHYS,
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.end = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device pcm027_flash = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &pcm027_flash_data,
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},
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.resource = &pcm027_flash_resource,
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.num_resources = 1,
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};
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#ifdef CONFIG_LEDS_GPIO
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static struct gpio_led pcm027_led[] = {
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{
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.name = "led0:red", /* FIXME */
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.gpio = PCM027_LED_CPU
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},
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{
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.name = "led1:green", /* FIXME */
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.gpio = PCM027_LED_HEARD_BEAT
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},
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};
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static struct gpio_led_platform_data pcm027_led_data = {
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.num_leds = ARRAY_SIZE(pcm027_led),
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.leds = pcm027_led
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};
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static struct platform_device pcm027_led_dev = {
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.name = "leds-gpio",
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.id = 0,
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.dev = {
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.platform_data = &pcm027_led_data,
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},
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};
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#endif /* CONFIG_LEDS_GPIO */
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/*
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* declare the available device resources on this board
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*/
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static struct platform_device *devices[] __initdata = {
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&smc91x_device,
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&pcm027_flash,
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#ifdef CONFIG_LEDS_GPIO
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&pcm027_led_dev
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#endif
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};
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/*
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* pcm027_init - breath some life into the board
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*/
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static void __init pcm027_init(void)
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{
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/* system bus arbiter setting
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* - Core_Park
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* - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
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*/
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ARB_CNTRL = ARB_CORE_PARK | 0x234;
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pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));
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pxa_set_ffuart_info(NULL);
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pxa_set_btuart_info(NULL);
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pxa_set_stuart_info(NULL);
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platform_add_devices(devices, ARRAY_SIZE(devices));
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/* at last call the baseboard to initialize itself */
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#ifdef CONFIG_MACH_PCM990_BASEBOARD
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pcm990_baseboard_init();
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#endif
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pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
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spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
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}
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static void __init pcm027_map_io(void)
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{
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pxa27x_map_io();
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/* initialize sleep mode regs (wake-up sources, etc) */
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PGSR0 = 0x01308000;
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PGSR1 = 0x00CF0002;
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PGSR2 = 0x0E294000;
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PGSR3 = 0x0000C000;
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PWER = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
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PRER = 0x00000000;
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PFER = 0x00000003;
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}
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MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
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/* Maintainer: Pengutronix */
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.boot_params = 0xa0000100,
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.map_io = pcm027_map_io,
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.nr_irqs = PCM027_NR_IRQS,
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.init_irq = pxa27x_init_irq,
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.timer = &pxa_timer,
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.init_machine = pcm027_init,
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MACHINE_END
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