cc155c6f2c
For some platforms, it is inappropriate to register all PXA UARTs. In some cases, the UARTs may not be used, and in others we may want to avoid registering the UARTs to allow other drivers (eg, FICP) to make use of the UART. In addition, a while back there was a request to be able to pass platform data to the UART driver. This patch enables all of this by providing functions platforms can call to register each individual UART. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
268 lines
6.1 KiB
C
268 lines
6.1 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/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/pxa2xx_spi.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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pxa_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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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.map_io = pcm027_map_io,
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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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