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e7b3dc7ef1
smc91x is shared between many different platforms. Each platform needs to specify the interrupt type, and in some cases the irq type depends on more than just the build configuration - it depends on runtime checks. Rather than throwing this code into the SMC_IRQ_FLAGS definition, provide a way for these flags to be passed via the IRQ resource itself. Note that IRQF_TRIGGER_* constants are intentionally defined to correspond with the IORESOURCE_IRQ_* interrupt type flags, in much the same way that the low bits of PCI iomem resources correspond with the BAR flag bits. Also provide a way to configure smc91x to read the IRQ flags from the resource. Once all platforms have been converted over (signified by all definitions of SMC_IRQ_FLAGS being -1) SMC_IRQ_FLAGS should be removed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Nicolas Pitre <nico@cam.org> Acked-by: Jeff Garzik <jgarzik@redhat.com>
371 lines
8.9 KiB
C
371 lines
8.9 KiB
C
/*
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* linux/arch/arm/mach-omap2/board-apollon.c
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*
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* Copyright (C) 2005,2006 Samsung Electronics
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* Author: Kyungmin Park <kyungmin.park@samsung.com>
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*
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* Modified from mach-omap/omap2/board-h4.c
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*
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* Code for apollon OMAP2 board. Should work on many OMAP2 systems where
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* the bootloader passes the board-specific data to the kernel.
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* Do not put any board specific code to this file; create a new machine
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* type if you need custom low-level initializations.
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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/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/onenand.h>
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#include <linux/irq.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/leds.h>
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#include <linux/irq.h>
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/led.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/usb.h>
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#include <asm/arch/board.h>
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#include <asm/arch/common.h>
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#include <asm/arch/gpmc.h>
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#include "prcm-regs.h"
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/* LED & Switch macros */
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#define LED0_GPIO13 13
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#define LED1_GPIO14 14
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#define LED2_GPIO15 15
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#define SW_ENTER_GPIO16 16
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#define SW_UP_GPIO17 17
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#define SW_DOWN_GPIO58 58
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#define APOLLON_FLASH_CS 0
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#define APOLLON_ETH_CS 1
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static struct mtd_partition apollon_partitions[] = {
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{
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.name = "X-Loader + U-Boot",
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.offset = 0,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE,
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},
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{
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_128K,
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},
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{
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_2M,
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},
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{
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.name = "rootfs",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_16M,
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},
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{
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.name = "filesystem00",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_32M,
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},
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{
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.name = "filesystem01",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct flash_platform_data apollon_flash_data = {
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.parts = apollon_partitions,
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.nr_parts = ARRAY_SIZE(apollon_partitions),
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};
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static struct resource apollon_flash_resource[] = {
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[0] = {
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device apollon_onenand_device = {
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.name = "onenand",
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.id = -1,
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.dev = {
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.platform_data = &apollon_flash_data,
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},
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.num_resources = ARRAY_SIZE(apollon_flash_resource),
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.resource = apollon_flash_resource,
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};
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static void __init apollon_flash_init(void)
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{
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unsigned long base;
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if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
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printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
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return;
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}
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apollon_flash_resource[0].start = base;
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apollon_flash_resource[0].end = base + SZ_128K - 1;
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}
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static struct resource apollon_smc91x_resources[] = {
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[0] = {
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
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.end = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
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.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
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},
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};
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static struct platform_device apollon_smc91x_device = {
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.name = "smc91x",
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.id = -1,
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.num_resources = ARRAY_SIZE(apollon_smc91x_resources),
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.resource = apollon_smc91x_resources,
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};
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static struct platform_device apollon_lcd_device = {
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.name = "apollon_lcd",
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.id = -1,
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};
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static struct omap_led_config apollon_led_config[] = {
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{
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.cdev = {
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.name = "apollon:led0",
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},
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.gpio = LED0_GPIO13,
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},
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{
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.cdev = {
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.name = "apollon:led1",
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},
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.gpio = LED1_GPIO14,
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},
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{
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.cdev = {
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.name = "apollon:led2",
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},
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.gpio = LED2_GPIO15,
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},
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};
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static struct omap_led_platform_data apollon_led_data = {
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.nr_leds = ARRAY_SIZE(apollon_led_config),
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.leds = apollon_led_config,
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};
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static struct platform_device apollon_led_device = {
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.name = "omap-led",
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.id = -1,
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.dev = {
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.platform_data = &apollon_led_data,
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},
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};
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static struct platform_device *apollon_devices[] __initdata = {
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&apollon_onenand_device,
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&apollon_smc91x_device,
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&apollon_lcd_device,
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&apollon_led_device,
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};
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static inline void __init apollon_init_smc91x(void)
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{
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unsigned long base;
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/* Make sure CS1 timings are correct */
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GPMC_CONFIG1_1 = 0x00011203;
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GPMC_CONFIG2_1 = 0x001f1f01;
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GPMC_CONFIG3_1 = 0x00080803;
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GPMC_CONFIG4_1 = 0x1c091c09;
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GPMC_CONFIG5_1 = 0x041f1f1f;
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GPMC_CONFIG6_1 = 0x000004c4;
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if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
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printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
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return;
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}
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apollon_smc91x_resources[0].start = base + 0x300;
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apollon_smc91x_resources[0].end = base + 0x30f;
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udelay(100);
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omap_cfg_reg(W4__24XX_GPIO74);
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if (omap_request_gpio(APOLLON_ETHR_GPIO_IRQ) < 0) {
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printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
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APOLLON_ETHR_GPIO_IRQ);
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gpmc_cs_free(APOLLON_ETH_CS);
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return;
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}
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omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
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}
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static void __init omap_apollon_init_irq(void)
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{
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omap2_init_common_hw();
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omap_init_irq();
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omap_gpio_init();
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apollon_init_smc91x();
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}
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static struct omap_uart_config apollon_uart_config __initdata = {
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.enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
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};
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static struct omap_mmc_config apollon_mmc_config __initdata = {
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.mmc [0] = {
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.enabled = 1,
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.wire4 = 1,
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.wp_pin = -1,
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.power_pin = -1,
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.switch_pin = -1,
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},
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};
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static struct omap_usb_config apollon_usb_config __initdata = {
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.register_dev = 1,
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.hmc_mode = 0x14, /* 0:dev 1:host1 2:disable */
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.pins[0] = 6,
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};
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static struct omap_lcd_config apollon_lcd_config __initdata = {
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.ctrl_name = "internal",
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};
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static struct omap_board_config_kernel apollon_config[] = {
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{ OMAP_TAG_UART, &apollon_uart_config },
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{ OMAP_TAG_MMC, &apollon_mmc_config },
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{ OMAP_TAG_USB, &apollon_usb_config },
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{ OMAP_TAG_LCD, &apollon_lcd_config },
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};
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static void __init apollon_led_init(void)
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{
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/* LED0 - AA10 */
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omap_cfg_reg(AA10_242X_GPIO13);
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omap_request_gpio(LED0_GPIO13);
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omap_set_gpio_direction(LED0_GPIO13, 0);
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omap_set_gpio_dataout(LED0_GPIO13, 0);
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/* LED1 - AA6 */
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omap_cfg_reg(AA6_242X_GPIO14);
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omap_request_gpio(LED1_GPIO14);
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omap_set_gpio_direction(LED1_GPIO14, 0);
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omap_set_gpio_dataout(LED1_GPIO14, 0);
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/* LED2 - AA4 */
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omap_cfg_reg(AA4_242X_GPIO15);
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omap_request_gpio(LED2_GPIO15);
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omap_set_gpio_direction(LED2_GPIO15, 0);
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omap_set_gpio_dataout(LED2_GPIO15, 0);
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}
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static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
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{
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static unsigned int led0, led1, led2;
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if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
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omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
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else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
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omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
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else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
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omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
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return IRQ_HANDLED;
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}
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static void __init apollon_sw_init(void)
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{
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/* Enter SW - Y11 */
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omap_cfg_reg(Y11_242X_GPIO16);
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omap_request_gpio(SW_ENTER_GPIO16);
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omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
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/* Up SW - AA12 */
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omap_cfg_reg(AA12_242X_GPIO17);
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omap_request_gpio(SW_UP_GPIO17);
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omap_set_gpio_direction(SW_UP_GPIO17, 1);
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/* Down SW - AA8 */
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omap_cfg_reg(AA8_242X_GPIO58);
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omap_request_gpio(SW_DOWN_GPIO58);
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omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
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set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQT_RISING);
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if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
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IRQF_SHARED, "enter sw",
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&apollon_sw_interrupt))
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return;
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set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQT_RISING);
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if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
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IRQF_SHARED, "up sw",
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&apollon_sw_interrupt))
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return;
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set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQT_RISING);
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if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
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IRQF_SHARED, "down sw",
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&apollon_sw_interrupt))
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return;
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}
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static void __init apollon_usb_init(void)
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{
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/* USB device */
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/* DEVICE_SUSPEND */
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omap_cfg_reg(P21_242X_GPIO12);
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omap_request_gpio(12);
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omap_set_gpio_direction(12, 0); /* OUT */
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omap_set_gpio_dataout(12, 0);
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}
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static void __init omap_apollon_init(void)
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{
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apollon_led_init();
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apollon_sw_init();
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apollon_flash_init();
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apollon_usb_init();
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/* REVISIT: where's the correct place */
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omap_cfg_reg(W19_24XX_SYS_NIRQ);
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/* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
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CONTROL_DEVCONF |= (1 << 24);
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/*
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* Make sure the serial ports are muxed on at this point.
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* You have to mux them off in device drivers later on
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* if not needed.
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*/
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platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
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omap_board_config = apollon_config;
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omap_board_config_size = ARRAY_SIZE(apollon_config);
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omap_serial_init();
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}
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static void __init omap_apollon_map_io(void)
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{
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omap2_map_common_io();
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}
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MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
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/* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
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.phys_io = 0x48000000,
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.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
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.boot_params = 0x80000100,
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.map_io = omap_apollon_map_io,
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.init_irq = omap_apollon_init_irq,
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.init_machine = omap_apollon_init,
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.timer = &omap_timer,
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MACHINE_END
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