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linux/arch/arm/mach-omap2/board-ldp.c
Jean Pihet 58cda884ec OMAP3 SDRC: add support for 2 SDRAM chip selects 
Some OMAP3 boards (Beagle Cx, Overo, RX51, Pandora) have 2
SDRAM parts connected to the SDRC.

This patch adds the following:
- add a new argument of type omap_sdrc_params struct*
to omap2_init_common_hw and omap2_sdrc_init for the 2nd CS params
- adapted the OMAP boards files to the new prototype of
omap2_init_common_hw
- add the SDRC 2nd CS registers offsets defines
- adapt the sram sleep code to configure the SDRC for the 2nd CS

Note: If the 2nd param to omap2_init_common_hw is NULL, then the
parameters are not programmed into the SDRC CS1 registers

Tested on 3430 SDP and Beagleboard rev C2 and B5, with
suspend/resume and frequency changes (cpufreq).

Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2009-07-24 19:43:25 -06:00

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/*
* linux/arch/arm/mach-omap2/board-ldp.c
*
* Copyright (C) 2008 Texas Instruments Inc.
* Nishant Kamat <nskamat@ti.com>
*
* Modified from mach-omap2/board-3430sdp.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/delay.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/workqueue.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl4030.h>
#include <linux/io.h>
#include <linux/smsc911x.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/mcspi.h>
#include <mach/gpio.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/gpmc.h>
#include <asm/delay.h>
#include <mach/control.h>
#include <mach/usb.h>
#include <mach/keypad.h>
#include "mmc-twl4030.h"
#define LDP_SMSC911X_CS 1
#define LDP_SMSC911X_GPIO 152
#define DEBUG_BASE 0x08000000
#define LDP_ETHR_START DEBUG_BASE
static struct resource ldp_smsc911x_resources[] = {
[0] = {
.start = LDP_ETHR_START,
.end = LDP_ETHR_START + SZ_4K,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = 0,
.end = 0,
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
},
};
static struct smsc911x_platform_config ldp_smsc911x_config = {
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
.flags = SMSC911X_USE_32BIT,
.phy_interface = PHY_INTERFACE_MODE_MII,
};
static struct platform_device ldp_smsc911x_device = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(ldp_smsc911x_resources),
.resource = ldp_smsc911x_resources,
.dev = {
.platform_data = &ldp_smsc911x_config,
},
};
static int ldp_twl4030_keymap[] = {
KEY(0, 0, KEY_1),
KEY(1, 0, KEY_2),
KEY(2, 0, KEY_3),
KEY(0, 1, KEY_4),
KEY(1, 1, KEY_5),
KEY(2, 1, KEY_6),
KEY(3, 1, KEY_F5),
KEY(0, 2, KEY_7),
KEY(1, 2, KEY_8),
KEY(2, 2, KEY_9),
KEY(3, 2, KEY_F6),
KEY(0, 3, KEY_F7),
KEY(1, 3, KEY_0),
KEY(2, 3, KEY_F8),
PERSISTENT_KEY(4, 5),
KEY(4, 4, KEY_VOLUMEUP),
KEY(5, 5, KEY_VOLUMEDOWN),
0
};
static struct twl4030_keypad_data ldp_kp_twl4030_data = {
.rows = 6,
.cols = 6,
.keymap = ldp_twl4030_keymap,
.keymapsize = ARRAY_SIZE(ldp_twl4030_keymap),
.rep = 1,
};
static struct gpio_keys_button ldp_gpio_keys_buttons[] = {
[0] = {
.code = KEY_ENTER,
.gpio = 101,
.desc = "enter sw",
.active_low = 1,
.debounce_interval = 30,
},
[1] = {
.code = KEY_F1,
.gpio = 102,
.desc = "func 1",
.active_low = 1,
.debounce_interval = 30,
},
[2] = {
.code = KEY_F2,
.gpio = 103,
.desc = "func 2",
.active_low = 1,
.debounce_interval = 30,
},
[3] = {
.code = KEY_F3,
.gpio = 104,
.desc = "func 3",
.active_low = 1,
.debounce_interval = 30,
},
[4] = {
.code = KEY_F4,
.gpio = 105,
.desc = "func 4",
.active_low = 1,
.debounce_interval = 30,
},
[5] = {
.code = KEY_LEFT,
.gpio = 106,
.desc = "left sw",
.active_low = 1,
.debounce_interval = 30,
},
[6] = {
.code = KEY_RIGHT,
.gpio = 107,
.desc = "right sw",
.active_low = 1,
.debounce_interval = 30,
},
[7] = {
.code = KEY_UP,
.gpio = 108,
.desc = "up sw",
.active_low = 1,
.debounce_interval = 30,
},
[8] = {
.code = KEY_DOWN,
.gpio = 109,
.desc = "down sw",
.active_low = 1,
.debounce_interval = 30,
},
};
static struct gpio_keys_platform_data ldp_gpio_keys = {
.buttons = ldp_gpio_keys_buttons,
.nbuttons = ARRAY_SIZE(ldp_gpio_keys_buttons),
.rep = 1,
};
static struct platform_device ldp_gpio_keys_device = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &ldp_gpio_keys,
},
};
static int ts_gpio;
/**
* @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
*
* @return - void. If request gpio fails then Flag KERN_ERR.
*/
static void ads7846_dev_init(void)
{
if (gpio_request(ts_gpio, "ads7846 irq") < 0) {
printk(KERN_ERR "can't get ads746 pen down GPIO\n");
return;
}
gpio_direction_input(ts_gpio);
omap_set_gpio_debounce(ts_gpio, 1);
omap_set_gpio_debounce_time(ts_gpio, 0xa);
}
static int ads7846_get_pendown_state(void)
{
return !gpio_get_value(ts_gpio);
}
static struct ads7846_platform_data tsc2046_config __initdata = {
.get_pendown_state = ads7846_get_pendown_state,
.keep_vref_on = 1,
};
static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
.turbo_mode = 0,
.single_channel = 1, /* 0: slave, 1: master */
};
static struct spi_board_info ldp_spi_board_info[] __initdata = {
[0] = {
/*
* TSC2046 operates at a max freqency of 2MHz, so
* operate slightly below at 1.5MHz
*/
.modalias = "ads7846",
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 1500000,
.controller_data = &tsc2046_mcspi_config,
.irq = 0,
.platform_data = &tsc2046_config,
},
};
static inline void __init ldp_init_smsc911x(void)
{
int eth_cs;
unsigned long cs_mem_base;
int eth_gpio = 0;
eth_cs = LDP_SMSC911X_CS;
if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");
return;
}
ldp_smsc911x_resources[0].start = cs_mem_base + 0x0;
ldp_smsc911x_resources[0].end = cs_mem_base + 0xff;
udelay(100);
eth_gpio = LDP_SMSC911X_GPIO;
ldp_smsc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
if (gpio_request(eth_gpio, "smsc911x irq") < 0) {
printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
eth_gpio);
return;
}
gpio_direction_input(eth_gpio);
}
static void __init omap_ldp_init_irq(void)
{
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
omap_gpio_init();
ldp_init_smsc911x();
}
static struct omap_uart_config ldp_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct platform_device ldp_lcd_device = {
.name = "ldp_lcd",
.id = -1,
};
static struct omap_lcd_config ldp_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel ldp_config[] __initdata = {
{ OMAP_TAG_UART, &ldp_uart_config },
{ OMAP_TAG_LCD, &ldp_lcd_config },
};
static struct twl4030_usb_data ldp_usb_data = {
.usb_mode = T2_USB_MODE_ULPI,
};
static struct twl4030_gpio_platform_data ldp_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
};
static struct twl4030_madc_platform_data ldp_madc_data = {
.irq_line = 1,
};
static struct regulator_consumer_supply ldp_vmmc1_supply = {
.supply = "vmmc",
};
/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data ldp_vmmc1 = {
.constraints = {
.min_uV = 1850000,
.max_uV = 3150000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
.consumer_supplies = &ldp_vmmc1_supply,
};
static struct twl4030_platform_data ldp_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,
/* platform_data for children goes here */
.madc = &ldp_madc_data,
.usb = &ldp_usb_data,
.vmmc1 = &ldp_vmmc1,
.gpio = &ldp_gpio_data,
.keypad = &ldp_kp_twl4030_data,
};
static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
{
I2C_BOARD_INFO("twl4030", 0x48),
.flags = I2C_CLIENT_WAKE,
.irq = INT_34XX_SYS_NIRQ,
.platform_data = &ldp_twldata,
},
};
static int __init omap_i2c_init(void)
{
omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
ARRAY_SIZE(ldp_i2c_boardinfo));
omap_register_i2c_bus(2, 400, NULL, 0);
omap_register_i2c_bus(3, 400, NULL, 0);
return 0;
}
static struct twl4030_hsmmc_info mmc[] __initdata = {
{
.mmc = 1,
.wires = 4,
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
},
{} /* Terminator */
};
static struct platform_device *ldp_devices[] __initdata = {
&ldp_smsc911x_device,
&ldp_lcd_device,
&ldp_gpio_keys_device,
};
static void __init omap_ldp_init(void)
{
omap_i2c_init();
platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
omap_board_config = ldp_config;
omap_board_config_size = ARRAY_SIZE(ldp_config);
ts_gpio = 54;
ldp_spi_board_info[0].irq = gpio_to_irq(ts_gpio);
spi_register_board_info(ldp_spi_board_info,
ARRAY_SIZE(ldp_spi_board_info));
ads7846_dev_init();
omap_serial_init();
usb_musb_init();
twl4030_mmc_init(mmc);
/* link regulators to MMC adapters */
ldp_vmmc1_supply.dev = mmc[0].dev;
}
static void __init omap_ldp_map_io(void)
{
omap2_set_globals_343x();
omap2_map_common_io();
}
MACHINE_START(OMAP_LDP, "OMAP LDP board")
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap_ldp_map_io,
.init_irq = omap_ldp_init_irq,
.init_machine = omap_ldp_init,
.timer = &omap_timer,
MACHINE_END
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