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9fb97412c3
linux-next/arch/arm/mach-omap2/board-omap3pandora.c
Jean Pihet 9fb97412c3 OMAP3: Setup MUX settings for SDRC CKE signals 
This patches ensures the MUX settings are correct for the SDRC
CKE signals to SDRAM. This allows the self-refresh to work when
2 chip-selects are in use.

A warning is thrown away in case the initial muxing is incorrect,
in order to track faulty or old-dated bootloaders.
Note: The CONFIG_OMAP_MUX and CONFIG_OMAP_MUX_WARNINGS options
must be enabled for the mux code to have effect.

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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/*
* board-omap3pandora.c (Pandora Handheld Console)
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl4030.h>
#include <linux/leds.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/gpio.h>
#include <mach/hardware.h>
#include <mach/mcspi.h>
#include <mach/usb.h>
#include <mach/keypad.h>
#include <mach/mux.h>
#include "sdram-micron-mt46h32m32lf-6.h"
#include "mmc-twl4030.h"
#define OMAP3_PANDORA_TS_GPIO 94
/* hardware debounce: (value + 1) * 31us */
#define GPIO_DEBOUNCE_TIME 127
static struct gpio_led pandora_gpio_leds[] = {
{
.name = "pandora::sd1",
.default_trigger = "mmc0",
.gpio = 128,
}, {
.name = "pandora::sd2",
.default_trigger = "mmc1",
.gpio = 129,
}, {
.name = "pandora::bluetooth",
.gpio = 158,
}, {
.name = "pandora::wifi",
.gpio = 159,
},
};
static struct gpio_led_platform_data pandora_gpio_led_data = {
.leds = pandora_gpio_leds,
.num_leds = ARRAY_SIZE(pandora_gpio_leds),
};
static struct platform_device pandora_leds_gpio = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &pandora_gpio_led_data,
},
};
#define GPIO_BUTTON(gpio_num, ev_type, ev_code, act_low, descr) \
{ \
.gpio = gpio_num, \
.type = ev_type, \
.code = ev_code, \
.active_low = act_low, \
.desc = "btn " descr, \
}
#define GPIO_BUTTON_LOW(gpio_num, event_code, description) \
GPIO_BUTTON(gpio_num, EV_KEY, event_code, 1, description)
static struct gpio_keys_button pandora_gpio_keys[] = {
GPIO_BUTTON_LOW(110, KEY_UP, "up"),
GPIO_BUTTON_LOW(103, KEY_DOWN, "down"),
GPIO_BUTTON_LOW(96, KEY_LEFT, "left"),
GPIO_BUTTON_LOW(98, KEY_RIGHT, "right"),
GPIO_BUTTON_LOW(111, BTN_A, "a"),
GPIO_BUTTON_LOW(106, BTN_B, "b"),
GPIO_BUTTON_LOW(109, BTN_X, "x"),
GPIO_BUTTON_LOW(101, BTN_Y, "y"),
GPIO_BUTTON_LOW(102, BTN_TL, "l"),
GPIO_BUTTON_LOW(97, BTN_TL2, "l2"),
GPIO_BUTTON_LOW(105, BTN_TR, "r"),
GPIO_BUTTON_LOW(107, BTN_TR2, "r2"),
GPIO_BUTTON_LOW(104, KEY_LEFTCTRL, "ctrl"),
GPIO_BUTTON_LOW(99, KEY_MENU, "menu"),
GPIO_BUTTON_LOW(176, KEY_COFFEE, "hold"),
GPIO_BUTTON(100, EV_KEY, KEY_LEFTALT, 0, "alt"),
GPIO_BUTTON(108, EV_SW, SW_LID, 1, "lid"),
};
static struct gpio_keys_platform_data pandora_gpio_key_info = {
.buttons = pandora_gpio_keys,
.nbuttons = ARRAY_SIZE(pandora_gpio_keys),
};
static struct platform_device pandora_keys_gpio = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &pandora_gpio_key_info,
},
};
static void __init pandora_keys_gpio_init(void)
{
/* set debounce time for GPIO banks 4 and 6 */
omap_set_gpio_debounce_time(32 * 3, GPIO_DEBOUNCE_TIME);
omap_set_gpio_debounce_time(32 * 5, GPIO_DEBOUNCE_TIME);
}
static int pandora_keypad_map[] = {
/* col, row, code */
KEY(0, 0, KEY_9),
KEY(0, 1, KEY_0),
KEY(0, 2, KEY_BACKSPACE),
KEY(0, 3, KEY_O),
KEY(0, 4, KEY_P),
KEY(0, 5, KEY_K),
KEY(0, 6, KEY_L),
KEY(0, 7, KEY_ENTER),
KEY(1, 0, KEY_8),
KEY(1, 1, KEY_7),
KEY(1, 2, KEY_6),
KEY(1, 3, KEY_5),
KEY(1, 4, KEY_4),
KEY(1, 5, KEY_3),
KEY(1, 6, KEY_2),
KEY(1, 7, KEY_1),
KEY(2, 0, KEY_I),
KEY(2, 1, KEY_U),
KEY(2, 2, KEY_Y),
KEY(2, 3, KEY_T),
KEY(2, 4, KEY_R),
KEY(2, 5, KEY_E),
KEY(2, 6, KEY_W),
KEY(2, 7, KEY_Q),
KEY(3, 0, KEY_J),
KEY(3, 1, KEY_H),
KEY(3, 2, KEY_G),
KEY(3, 3, KEY_F),
KEY(3, 4, KEY_D),
KEY(3, 5, KEY_S),
KEY(3, 6, KEY_A),
KEY(3, 7, KEY_LEFTSHIFT),
KEY(4, 0, KEY_N),
KEY(4, 1, KEY_B),
KEY(4, 2, KEY_V),
KEY(4, 3, KEY_C),
KEY(4, 4, KEY_X),
KEY(4, 5, KEY_Z),
KEY(4, 6, KEY_DOT),
KEY(4, 7, KEY_COMMA),
KEY(5, 0, KEY_M),
KEY(5, 1, KEY_SPACE),
KEY(5, 2, KEY_FN),
};
static struct twl4030_keypad_data pandora_kp_data = {
.rows = 8,
.cols = 6,
.keymap = pandora_keypad_map,
.keymapsize = ARRAY_SIZE(pandora_keypad_map),
.rep = 1,
};
static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
{
.mmc = 1,
.wires = 4,
.gpio_cd = -EINVAL,
.gpio_wp = 126,
.ext_clock = 0,
},
{
.mmc = 2,
.wires = 4,
.gpio_cd = -EINVAL,
.gpio_wp = 127,
.ext_clock = 1,
.transceiver = true,
},
{
.mmc = 3,
.wires = 4,
.gpio_cd = -EINVAL,
.gpio_wp = -EINVAL,
},
{} /* Terminator */
};
static struct omap_uart_config omap3pandora_uart_config __initdata = {
.enabled_uarts = (1 << 2), /* UART3 */
};
static struct regulator_consumer_supply pandora_vmmc1_supply = {
.supply = "vmmc",
};
static struct regulator_consumer_supply pandora_vmmc2_supply = {
.supply = "vmmc",
};
static int omap3pandora_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
/* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
omap3pandora_mmc[0].gpio_cd = gpio + 0;
omap3pandora_mmc[1].gpio_cd = gpio + 1;
twl4030_mmc_init(omap3pandora_mmc);
/* link regulators to MMC adapters */
pandora_vmmc1_supply.dev = omap3pandora_mmc[0].dev;
pandora_vmmc2_supply.dev = omap3pandora_mmc[1].dev;
return 0;
}
static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
.setup = omap3pandora_twl_gpio_setup,
};
/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data pandora_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 = &pandora_vmmc1_supply,
};
/* VMMC2 for MMC2 pins CMD, CLK, DAT0..DAT3 (max 100 mA) */
static struct regulator_init_data pandora_vmmc2 = {
.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 = &pandora_vmmc2_supply,
};
static struct twl4030_usb_data omap3pandora_usb_data = {
.usb_mode = T2_USB_MODE_ULPI,
};
static struct twl4030_platform_data omap3pandora_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,
.gpio = &omap3pandora_gpio_data,
.usb = &omap3pandora_usb_data,
.vmmc1 = &pandora_vmmc1,
.vmmc2 = &pandora_vmmc2,
.keypad = &pandora_kp_data,
};
static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
{
I2C_BOARD_INFO("tps65950", 0x48),
.flags = I2C_CLIENT_WAKE,
.irq = INT_34XX_SYS_NIRQ,
.platform_data = &omap3pandora_twldata,
},
};
static int __init omap3pandora_i2c_init(void)
{
omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
ARRAY_SIZE(omap3pandora_i2c_boardinfo));
/* i2c2 pins are not connected */
omap_register_i2c_bus(3, 400, NULL, 0);
return 0;
}
static void __init omap3pandora_init_irq(void)
{
omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_init_irq();
omap_gpio_init();
}
static void __init omap3pandora_ads7846_init(void)
{
int gpio = OMAP3_PANDORA_TS_GPIO;
int ret;
ret = gpio_request(gpio, "ads7846_pen_down");
if (ret < 0) {
printk(KERN_ERR "Failed to request GPIO %d for "
"ads7846 pen down IRQ\n", gpio);
return;
}
gpio_direction_input(gpio);
}
static int ads7846_get_pendown_state(void)
{
return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
}
static struct ads7846_platform_data ads7846_config = {
.x_max = 0x0fff,
.y_max = 0x0fff,
.x_plate_ohms = 180,
.pressure_max = 255,
.debounce_max = 10,
.debounce_tol = 3,
.debounce_rep = 1,
.get_pendown_state = ads7846_get_pendown_state,
.keep_vref_on = 1,
};
static struct omap2_mcspi_device_config ads7846_mcspi_config = {
.turbo_mode = 0,
.single_channel = 1, /* 0: slave, 1: master */
};
static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
{
.modalias = "ads7846",
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 1500000,
.controller_data = &ads7846_mcspi_config,
.irq = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
.platform_data = &ads7846_config,
}
};
static struct platform_device omap3pandora_lcd_device = {
.name = "pandora_lcd",
.id = -1,
};
static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
{ OMAP_TAG_UART, &omap3pandora_uart_config },
{ OMAP_TAG_LCD, &omap3pandora_lcd_config },
};
static struct platform_device *omap3pandora_devices[] __initdata = {
&omap3pandora_lcd_device,
&pandora_leds_gpio,
&pandora_keys_gpio,
};
static void __init omap3pandora_init(void)
{
omap3pandora_i2c_init();
platform_add_devices(omap3pandora_devices,
ARRAY_SIZE(omap3pandora_devices));
omap_board_config = omap3pandora_config;
omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
omap_serial_init();
spi_register_board_info(omap3pandora_spi_board_info,
ARRAY_SIZE(omap3pandora_spi_board_info));
omap3pandora_ads7846_init();
pandora_keys_gpio_init();
usb_musb_init();
/* Ensure SDRC pins are mux'd for self-refresh */
omap_cfg_reg(H16_34XX_SDRC_CKE0);
omap_cfg_reg(H17_34XX_SDRC_CKE1);
}
static void __init omap3pandora_map_io(void)
{
omap2_set_globals_343x();
omap2_map_common_io();
}
MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap3pandora_map_io,
.init_irq = omap3pandora_init_irq,
.init_machine = omap3pandora_init,
.timer = &omap_timer,
MACHINE_END
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