/*
* 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/irq.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/arch/gpio.h>
#include <asm/arch/led.h>
#include <asm/arch/mux.h>
#include <asm/arch/usb.h>
#include <asm/arch/board.h>
#include <asm/arch/common.h>
#include <asm/arch/gpmc.h>
#include <asm/arch/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
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 flash_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",
.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 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,
.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_cfg_reg(W4__24XX_GPIO74);
if (omap_request_gpio(APOLLON_ETHR_GPIO_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;
}
omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
out:
clk_disable(gpmc_fck);
clk_put(gpmc_fck);
}
static void __init omap_apollon_init_irq(void)
{
omap2_init_common_hw();
omap_init_irq();
omap_gpio_init();
apollon_init_smc91x();
}
static struct omap_uart_config apollon_uart_config __initdata = {
.enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
};
static struct omap_mmc_config apollon_mmc_config __initdata = {
.mmc [0] = {
.enabled = 1,
.wire4 = 1,
.wp_pin = -1,
.power_pin = -1,
.switch_pin = -1,
},
};
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[] = {
{ OMAP_TAG_UART, &apollon_uart_config },
{ OMAP_TAG_MMC, &apollon_mmc_config },
{ OMAP_TAG_USB, &apollon_usb_config },
{ OMAP_TAG_LCD, &apollon_lcd_config },
};
static void __init apollon_led_init(void)
{
/* LED0 - AA10 */
omap_cfg_reg(AA10_242X_GPIO13);
omap_request_gpio(LED0_GPIO13);
omap_set_gpio_direction(LED0_GPIO13, 0);
omap_set_gpio_dataout(LED0_GPIO13, 0);
/* LED1 - AA6 */
omap_cfg_reg(AA6_242X_GPIO14);
omap_request_gpio(LED1_GPIO14);
omap_set_gpio_direction(LED1_GPIO14, 0);
omap_set_gpio_dataout(LED1_GPIO14, 0);
/* LED2 - AA4 */
omap_cfg_reg(AA4_242X_GPIO15);
omap_request_gpio(LED2_GPIO15);
omap_set_gpio_direction(LED2_GPIO15, 0);
omap_set_gpio_dataout(LED2_GPIO15, 0);
}
static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
{
static unsigned int led0, led1, led2;
if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
return IRQ_HANDLED;
}
static void __init apollon_sw_init(void)
{
/* Enter SW - Y11 */
omap_cfg_reg(Y11_242X_GPIO16);
omap_request_gpio(SW_ENTER_GPIO16);
omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
/* Up SW - AA12 */
omap_cfg_reg(AA12_242X_GPIO17);
omap_request_gpio(SW_UP_GPIO17);
omap_set_gpio_direction(SW_UP_GPIO17, 1);
/* Down SW - AA8 */
omap_cfg_reg(AA8_242X_GPIO58);
omap_request_gpio(SW_DOWN_GPIO58);
omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQT_RISING);
if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
IRQF_SHARED, "enter sw",
&apollon_sw_interrupt))
return;
set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQT_RISING);
if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
IRQF_SHARED, "up sw",
&apollon_sw_interrupt))
return;
set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQT_RISING);
if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
IRQF_SHARED, "down sw",
&apollon_sw_interrupt))
return;
}
static void __init apollon_usb_init(void)
{
/* USB device */
/* DEVICE_SUSPEND */
omap_cfg_reg(P21_242X_GPIO12);
omap_request_gpio(12);
omap_set_gpio_direction(12, 0); /* OUT */
omap_set_gpio_dataout(12, 0);
}
static void __init omap_apollon_init(void)
{
u32 v;
apollon_led_init();
apollon_sw_init();
apollon_flash_init();
apollon_usb_init();
/* REVISIT: where's the correct place */
omap_cfg_reg(W19_24XX_SYS_NIRQ);
/* 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_board_config = apollon_config;
omap_board_config_size = ARRAY_SIZE(apollon_config);
omap_serial_init();
}
static void __init omap_apollon_map_io(void)
{
omap2_map_common_io();
}
MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
/* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap_apollon_map_io,
.init_irq = omap_apollon_init_irq,
.init_machine = omap_apollon_init,
.timer = &omap_timer,
MACHINE_END
