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linux-stable/arch/arm/mach-omap2/board-apollon.c
Paul Walmsley 4805734bcc OMAP2+: io: split omap2_init_common_hw() 
Split omap2_init_common_hw() into two functions.  The first,
omap2_init_common_infrastructure(), initializes the hwmod code and
data, the OMAP PM code, and the clock code and data.  The second,
omap2_init_common_devices(), handles any other early device
initialization that, for whatever reason, has not been or cannot be
moved to initcalls or early platform devices.

This patch is required for the hwmod postsetup patch, which allows
board files to change the state that hwmods should be placed into at
the conclusion of the hwmod _setup() function.  For example, for a
board whose creators wish to ensure watchdog coverage across the
entire kernel boot process, code to change the watchdog's postsetup
state will be added in the board-*.c file between the
omap2_init_common_infrastructure() and omap2_init_common_devices() function
calls.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>
2010-12-21 19:55:11 -07:00

363 lines
8.8 KiB
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/*
* linux/arch/arm/mach-omap2/board-apollon.c
*
* Copyright (C) 2005,2006 Samsung Electronics
* Author: Kyungmin Park <kyungmin.park@samsung.com>
*
* Modified from mach-omap/omap2/board-h4.c
*
* Code for apollon OMAP2 board. Should work on many OMAP2 systems where
* the bootloader passes the board-specific data to the kernel.
* Do not put any board specific code to this file; create a new machine
* type if you need custom low-level initializations.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/onenand.h>
#include <linux/delay.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/smc91x.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <mach/gpio.h>
#include <plat/led.h>
#include <plat/usb.h>
#include <plat/board.h>
#include <plat/common.h>
#include <plat/gpmc.h>
#include "mux.h"
#include "control.h"
/* LED & Switch macros */
#define LED0_GPIO13 13
#define LED1_GPIO14 14
#define LED2_GPIO15 15
#define SW_ENTER_GPIO16 16
#define SW_UP_GPIO17 17
#define SW_DOWN_GPIO58 58
#define APOLLON_FLASH_CS 0
#define APOLLON_ETH_CS 1
#define APOLLON_ETHR_GPIO_IRQ 74
static struct mtd_partition apollon_partitions[] = {
{
.name = "X-Loader + U-Boot",
.offset = 0,
.size = SZ_128K,
.mask_flags = MTD_WRITEABLE,
},
{
.name = "params",
.offset = MTDPART_OFS_APPEND,
.size = SZ_128K,
},
{
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
},
{
.name = "rootfs",
.offset = MTDPART_OFS_APPEND,
.size = SZ_16M,
},
{
.name = "filesystem00",
.offset = MTDPART_OFS_APPEND,
.size = SZ_32M,
},
{
.name = "filesystem01",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static struct onenand_platform_data apollon_flash_data = {
.parts = apollon_partitions,
.nr_parts = ARRAY_SIZE(apollon_partitions),
};
static struct resource apollon_flash_resource[] = {
[0] = {
.flags = IORESOURCE_MEM,
},
};
static struct platform_device apollon_onenand_device = {
.name = "onenand-flash",
.id = -1,
.dev = {
.platform_data = &apollon_flash_data,
},
.num_resources = ARRAY_SIZE(apollon_flash_resource),
.resource = apollon_flash_resource,
};
static void __init apollon_flash_init(void)
{
unsigned long base;
if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
return;
}
apollon_flash_resource[0].start = base;
apollon_flash_resource[0].end = base + SZ_128K - 1;
}
static struct smc91x_platdata appolon_smc91x_info = {
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
.leda = RPC_LED_100_10,
.ledb = RPC_LED_TX_RX,
};
static struct resource apollon_smc91x_resources[] = {
[0] = {
.flags = IORESOURCE_MEM,
},
[1] = {
.start = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
.end = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
},
};
static struct platform_device apollon_smc91x_device = {
.name = "smc91x",
.id = -1,
.dev = {
.platform_data = &appolon_smc91x_info,
},
.num_resources = ARRAY_SIZE(apollon_smc91x_resources),
.resource = apollon_smc91x_resources,
};
static struct platform_device apollon_lcd_device = {
.name = "apollon_lcd",
.id = -1,
};
static struct omap_led_config apollon_led_config[] = {
{
.cdev = {
.name = "apollon:led0",
},
.gpio = LED0_GPIO13,
},
{
.cdev = {
.name = "apollon:led1",
},
.gpio = LED1_GPIO14,
},
{
.cdev = {
.name = "apollon:led2",
},
.gpio = LED2_GPIO15,
},
};
static struct omap_led_platform_data apollon_led_data = {
.nr_leds = ARRAY_SIZE(apollon_led_config),
.leds = apollon_led_config,
};
static struct platform_device apollon_led_device = {
.name = "omap-led",
.id = -1,
.dev = {
.platform_data = &apollon_led_data,
},
};
static struct platform_device *apollon_devices[] __initdata = {
&apollon_onenand_device,
&apollon_smc91x_device,
&apollon_lcd_device,
&apollon_led_device,
};
static inline void __init apollon_init_smc91x(void)
{
unsigned long base;
unsigned int rate;
struct clk *gpmc_fck;
int eth_cs;
gpmc_fck = clk_get(NULL, "gpmc_fck"); /* Always on ENABLE_ON_INIT */
if (IS_ERR(gpmc_fck)) {
WARN_ON(1);
return;
}
clk_enable(gpmc_fck);
rate = clk_get_rate(gpmc_fck);
eth_cs = APOLLON_ETH_CS;
/* Make sure CS1 timings are correct */
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
if (rate >= 160000000) {
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
} else if (rate >= 130000000) {
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
} else {/* rate = 100000000 */
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
}
if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
goto out;
}
apollon_smc91x_resources[0].start = base + 0x300;
apollon_smc91x_resources[0].end = base + 0x30f;
udelay(100);
omap_mux_init_gpio(74, 0);
if (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
APOLLON_ETHR_GPIO_IRQ);
gpmc_cs_free(APOLLON_ETH_CS);
goto out;
}
gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
out:
clk_disable(gpmc_fck);
clk_put(gpmc_fck);
}
static struct omap_usb_config apollon_usb_config __initdata = {
.register_dev = 1,
.hmc_mode = 0x14, /* 0:dev 1:host1 2:disable */
.pins[0] = 6,
};
static struct omap_lcd_config apollon_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel apollon_config[] __initdata = {
{ OMAP_TAG_LCD, &apollon_lcd_config },
};
static void __init omap_apollon_init_irq(void)
{
omap_board_config = apollon_config;
omap_board_config_size = ARRAY_SIZE(apollon_config);
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
omap_init_irq();
}
static void __init apollon_led_init(void)
{
/* LED0 - AA10 */
omap_mux_init_signal("vlynq_clk.gpio_13", 0);
gpio_request(LED0_GPIO13, "LED0");
gpio_direction_output(LED0_GPIO13, 0);
/* LED1 - AA6 */
omap_mux_init_signal("vlynq_rx1.gpio_14", 0);
gpio_request(LED1_GPIO14, "LED1");
gpio_direction_output(LED1_GPIO14, 0);
/* LED2 - AA4 */
omap_mux_init_signal("vlynq_rx0.gpio_15", 0);
gpio_request(LED2_GPIO15, "LED2");
gpio_direction_output(LED2_GPIO15, 0);
}
static void __init apollon_usb_init(void)
{
/* USB device */
/* DEVICE_SUSPEND */
omap_mux_init_signal("mcbsp2_clkx.gpio_12", 0);
gpio_request(12, "USB suspend");
gpio_direction_output(12, 0);
omap2_usbfs_init(&apollon_usb_config);
}
#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif
static void __init omap_apollon_init(void)
{
u32 v;
omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC);
apollon_init_smc91x();
apollon_led_init();
apollon_flash_init();
apollon_usb_init();
/* REVISIT: where's the correct place */
omap_mux_init_signal("sys_nirq", OMAP_PULL_ENA | OMAP_PULL_UP);
/* LCD PWR_EN */
omap_mux_init_signal("mcbsp2_dr.gpio_11", OMAP_PULL_ENA | OMAP_PULL_UP);
/* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
v |= (1 << 24);
omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
/*
* Make sure the serial ports are muxed on at this point.
* You have to mux them off in device drivers later on
* if not needed.
*/
platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
omap_serial_init();
}
static void __init omap_apollon_map_io(void)
{
omap2_set_globals_242x();
omap242x_map_common_io();
}
MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
/* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
.boot_params = 0x80000100,
.map_io = omap_apollon_map_io,
.reserve = omap_reserve,
.init_irq = omap_apollon_init_irq,
.init_machine = omap_apollon_init,
.timer = &omap_timer,
MACHINE_END
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