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linux-stable/arch/arm/mach-omap2/board-h4.c
Paul Walmsley 445959821f ARM: OMAP2: Change 24xx to use new register access 
This patch changes 24xx to use new register access, except for clock
framework. Clock framework register access will get updates in the
next patch.

Note that board-*.c files change GPMC (General Purpose Memory Controller)
access to use gpmc_cs_write_reg() instead of accessing the registers
directly. The code also uses gpmc_fck instead of it's parent clock
core_l3_ck for GPMC clock.

The H4 board file also adds h4_init_flash() function, which specify the
flash start and end addresses.

Also note that sleep.S removes some unused registers addresses.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14 10:29:37 -07:00

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/*
* linux/arch/arm/mach-omap2/board-h4.c
*
* Copyright (C) 2005 Nokia Corporation
* Author: Paul Mundt <paul.mundt@nokia.com>
*
* Modified from mach-omap/omap1/board-generic.c
*
* 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/delay.h>
#include <linux/workqueue.h>
#include <linux/input.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/map.h>
#include <asm/mach/flash.h>
#include <asm/arch/control.h>
#include <asm/arch/gpio.h>
#include <asm/arch/gpioexpander.h>
#include <asm/arch/mux.h>
#include <asm/arch/usb.h>
#include <asm/arch/irda.h>
#include <asm/arch/board.h>
#include <asm/arch/common.h>
#include <asm/arch/keypad.h>
#include <asm/arch/menelaus.h>
#include <asm/arch/dma.h>
#include <asm/arch/gpmc.h>
#include <asm/io.h>
#define H4_FLASH_CS 0
#define H4_SMC91X_CS 1
static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
static int h4_keymap[] = {
KEY(0, 0, KEY_LEFT),
KEY(0, 1, KEY_RIGHT),
KEY(0, 2, KEY_A),
KEY(0, 3, KEY_B),
KEY(0, 4, KEY_C),
KEY(1, 0, KEY_DOWN),
KEY(1, 1, KEY_UP),
KEY(1, 2, KEY_E),
KEY(1, 3, KEY_F),
KEY(1, 4, KEY_G),
KEY(2, 0, KEY_ENTER),
KEY(2, 1, KEY_I),
KEY(2, 2, KEY_J),
KEY(2, 3, KEY_K),
KEY(2, 4, KEY_3),
KEY(3, 0, KEY_M),
KEY(3, 1, KEY_N),
KEY(3, 2, KEY_O),
KEY(3, 3, KEY_P),
KEY(3, 4, KEY_Q),
KEY(4, 0, KEY_R),
KEY(4, 1, KEY_4),
KEY(4, 2, KEY_T),
KEY(4, 3, KEY_U),
KEY(4, 4, KEY_ENTER),
KEY(5, 0, KEY_V),
KEY(5, 1, KEY_W),
KEY(5, 2, KEY_L),
KEY(5, 3, KEY_S),
KEY(5, 4, KEY_ENTER),
0
};
static struct mtd_partition h4_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
.name = "bootloader",
.offset = 0,
.size = SZ_128K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* bootloader params in the next sector */
{
.name = "params",
.offset = MTDPART_OFS_APPEND,
.size = SZ_128K,
.mask_flags = 0,
},
/* kernel */
{
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
.mask_flags = 0
},
/* file system */
{
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0
}
};
static struct flash_platform_data h4_flash_data = {
.map_name = "cfi_probe",
.width = 2,
.parts = h4_partitions,
.nr_parts = ARRAY_SIZE(h4_partitions),
};
static struct resource h4_flash_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device h4_flash_device = {
.name = "omapflash",
.id = 0,
.dev = {
.platform_data = &h4_flash_data,
},
.num_resources = 1,
.resource = &h4_flash_resource,
};
/* Select between the IrDA and aGPS module
*/
static int h4_select_irda(struct device *dev, int state)
{
unsigned char expa;
int err = 0;
if ((err = read_gpio_expa(&expa, 0x21))) {
printk(KERN_ERR "Error reading from I/O expander\n");
return err;
}
/* 'P6' enable/disable IRDA_TX and IRDA_RX */
if (state & IR_SEL) { /* IrDa */
if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
printk(KERN_ERR "Error writing to I/O expander\n");
return err;
}
} else {
if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
printk(KERN_ERR "Error writing to I/O expander\n");
return err;
}
}
return err;
}
static void set_trans_mode(struct work_struct *work)
{
struct omap_irda_config *irda_config =
container_of(work, struct omap_irda_config, gpio_expa.work);
int mode = irda_config->mode;
unsigned char expa;
int err = 0;
if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
printk(KERN_ERR "Error reading from I/O expander\n");
}
expa &= ~0x01;
if (!(mode & IR_SIRMODE)) { /* MIR/FIR */
expa |= 0x01;
}
if ((err = write_gpio_expa(expa, 0x20)) != 0) {
printk(KERN_ERR "Error writing to I/O expander\n");
}
}
static int h4_transceiver_mode(struct device *dev, int mode)
{
struct omap_irda_config *irda_config = dev->platform_data;
irda_config->mode = mode;
cancel_delayed_work(&irda_config->gpio_expa);
PREPARE_DELAYED_WORK(&irda_config->gpio_expa, set_trans_mode);
schedule_delayed_work(&irda_config->gpio_expa, 0);
return 0;
}
static struct omap_irda_config h4_irda_data = {
.transceiver_cap = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
.transceiver_mode = h4_transceiver_mode,
.select_irda = h4_select_irda,
.rx_channel = OMAP24XX_DMA_UART3_RX,
.tx_channel = OMAP24XX_DMA_UART3_TX,
.dest_start = OMAP_UART3_BASE,
.src_start = OMAP_UART3_BASE,
.tx_trigger = OMAP24XX_DMA_UART3_TX,
.rx_trigger = OMAP24XX_DMA_UART3_RX,
};
static struct resource h4_irda_resources[] = {
[0] = {
.start = INT_24XX_UART3_IRQ,
.end = INT_24XX_UART3_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device h4_irda_device = {
.name = "omapirda",
.id = -1,
.dev = {
.platform_data = &h4_irda_data,
},
.num_resources = 1,
.resource = h4_irda_resources,
};
static struct omap_kp_platform_data h4_kp_data = {
.rows = 6,
.cols = 7,
.keymap = h4_keymap,
.keymapsize = ARRAY_SIZE(h4_keymap),
.rep = 1,
.row_gpios = row_gpios,
.col_gpios = col_gpios,
};
static struct platform_device h4_kp_device = {
.name = "omap-keypad",
.id = -1,
.dev = {
.platform_data = &h4_kp_data,
},
};
static struct platform_device h4_lcd_device = {
.name = "lcd_h4",
.id = -1,
};
static struct platform_device *h4_devices[] __initdata = {
&h4_flash_device,
&h4_irda_device,
&h4_kp_device,
&h4_lcd_device,
};
/* 2420 Sysboot setup (2430 is different) */
static u32 get_sysboot_value(void)
{
return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
(OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
}
/* H4-2420's always used muxed mode, H4-2422's always use non-muxed
*
* Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
* correctly. The macro needs to look at production_id not just hawkeye.
*/
static u32 is_gpmc_muxed(void)
{
u32 mux;
mux = get_sysboot_value();
if ((mux & 0xF) == 0xd)
return 1; /* NAND config (could be either) */
if (mux & 0x2) /* if mux'ed */
return 1;
else
return 0;
}
static inline void __init h4_init_debug(void)
{
int eth_cs;
unsigned long cs_mem_base;
unsigned int muxed, rate;
struct clk *gpmc_fck;
eth_cs = H4_SMC91X_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);
clk_disable(gpmc_fck);
clk_put(gpmc_fck);
if (is_gpmc_muxed())
muxed = 0x200;
else
muxed = 0;
/* Make sure CS1 timings are correct */
gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
0x00011000 | muxed);
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(eth_cs, SZ_16M, &cs_mem_base) < 0) {
printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
goto out;
}
udelay(100);
omap_cfg_reg(M15_24XX_GPIO92);
if (debug_card_init(cs_mem_base, OMAP24XX_ETHR_GPIO_IRQ) < 0)
gpmc_cs_free(eth_cs);
out:
clk_disable(gpmc_fck);
clk_put(gpmc_fck);
}
static void __init h4_init_flash(void)
{
unsigned long base;
if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
printk("Can't request GPMC CS for flash\n");
return;
}
h4_flash_resource.start = base;
h4_flash_resource.end = base + SZ_64M - 1;
}
static void __init omap_h4_init_irq(void)
{
omap2_init_common_hw();
omap_init_irq();
omap_gpio_init();
h4_init_flash();
}
static struct omap_uart_config h4_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct omap_mmc_config h4_mmc_config __initdata = {
.mmc [0] = {
.enabled = 1,
.wire4 = 1,
.wp_pin = -1,
.power_pin = -1,
.switch_pin = -1,
},
};
static struct omap_lcd_config h4_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel h4_config[] = {
{ OMAP_TAG_UART, &h4_uart_config },
{ OMAP_TAG_MMC, &h4_mmc_config },
{ OMAP_TAG_LCD, &h4_lcd_config },
};
static void __init omap_h4_init(void)
{
/*
* 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.
*/
#if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
omap_cfg_reg(K15_24XX_UART3_TX);
omap_cfg_reg(K14_24XX_UART3_RX);
#endif
#if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
if (omap_has_menelaus()) {
row_gpios[5] = 0;
col_gpios[2] = 15;
col_gpios[6] = 18;
}
#endif
platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
omap_board_config = h4_config;
omap_board_config_size = ARRAY_SIZE(h4_config);
omap_serial_init();
}
static void __init omap_h4_map_io(void)
{
omap2_map_common_io();
}
MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
/* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap_h4_map_io,
.init_irq = omap_h4_init_irq,
.init_machine = omap_h4_init,
.timer = &omap_timer,
MACHINE_END
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