652bcd8f72
Most of the omap1 MMC boards got broken by an earlier patch
138ab9f832. If you look closely,
the MMC init funtions are pretty much just stubs.
Remove broken init code to make room for cleaner MMC init code.
Cc: Pierre Ossman <drzeus-mmc@drzeus.cx>
Signed-off-by: Tony Lindgren <tony@atomide.com>
398 lines
9.9 KiB
C
398 lines
9.9 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/err.h>
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#include <linux/clk.h>
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#include <mach/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 <mach/gpio.h>
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#include <mach/led.h>
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#include <mach/mux.h>
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#include <mach/usb.h>
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#include <mach/board.h>
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#include <mach/common.h>
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#include <mach/gpmc.h>
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#include <mach/control.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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unsigned int rate;
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struct clk *gpmc_fck;
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int eth_cs;
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gpmc_fck = clk_get(NULL, "gpmc_fck"); /* Always on ENABLE_ON_INIT */
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if (IS_ERR(gpmc_fck)) {
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WARN_ON(1);
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return;
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}
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clk_enable(gpmc_fck);
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rate = clk_get_rate(gpmc_fck);
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eth_cs = APOLLON_ETH_CS;
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/* Make sure CS1 timings are correct */
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
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if (rate >= 160000000) {
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
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} else if (rate >= 130000000) {
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
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} else {/* rate = 100000000 */
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
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gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
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}
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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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goto out;
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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 (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x 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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goto out;
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}
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gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
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out:
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clk_disable(gpmc_fck);
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clk_put(gpmc_fck);
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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_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_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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gpio_direction_input(SW_ENTER_GPIO16);
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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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gpio_direction_input(SW_UP_GPIO17);
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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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gpio_direction_input(SW_DOWN_GPIO58);
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set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQ_TYPE_EDGE_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), IRQ_TYPE_EDGE_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), IRQ_TYPE_EDGE_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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gpio_request(12, "USB suspend");
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gpio_direction_output(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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u32 v;
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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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v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
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v |= (1 << 24);
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omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
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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_set_globals_242x();
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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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