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alistair23-linux/arch/arm/mach-omap2/board-apollon.c
Tony Lindgren 741e3a89de omap: Use separate init_irq functions to avoid cpu_is_omap tests early 
This allows us to remove cpu_is_omap calls from init_irq functions.
There should not be any need for cpu_is_omap calls as at this point.
During the timer init we only care about SoC generation, and not about
subrevisions.

The main reason for the patch is that we want to initialize only
minimal omap specific code from the init_early call.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-06-16 05:42:09 -07:00

361 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 <linux/gpio.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.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;
int err;
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(APOLLON_ETHR_GPIO_IRQ, 0);
err = gpio_request_one(APOLLON_ETHR_GPIO_IRQ, GPIOF_IN, "SMC91x irq");
if (err) {
printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
APOLLON_ETHR_GPIO_IRQ);
gpmc_cs_free(APOLLON_ETH_CS);
}
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_early(void)
{
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
}
static struct gpio apollon_gpio_leds[] __initdata = {
{ LED0_GPIO13, GPIOF_OUT_INIT_LOW, "LED0" }, /* LED0 - AA10 */
{ LED1_GPIO14, GPIOF_OUT_INIT_LOW, "LED1" }, /* LED1 - AA6 */
{ LED2_GPIO15, GPIOF_OUT_INIT_LOW, "LED2" }, /* LED2 - AA4 */
};
static void __init apollon_led_init(void)
{
omap_mux_init_signal("vlynq_clk.gpio_13", 0);
omap_mux_init_signal("vlynq_rx1.gpio_14", 0);
omap_mux_init_signal("vlynq_rx0.gpio_15", 0);
gpio_request_array(apollon_gpio_leds, ARRAY_SIZE(apollon_gpio_leds));
}
static void __init apollon_usb_init(void)
{
/* USB device */
/* DEVICE_SUSPEND */
omap_mux_init_signal("mcbsp2_clkx.gpio_12", 0);
gpio_request_one(12, GPIOF_OUT_INIT_LOW, "USB suspend");
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);
omap_board_config = apollon_config;
omap_board_config_size = ARRAY_SIZE(apollon_config);
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,
.reserve = omap_reserve,
.map_io = omap_apollon_map_io,
.init_early = omap_apollon_init_early,
.init_irq = omap2_init_irq,
.init_machine = omap_apollon_init,
.timer = &omap_timer,
MACHINE_END
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