/*
* HTC Herald board configuration
* Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
* Copyright (C) 2009 Wing Linux
*
* Based on the board-htcwizard.c file from the linwizard project:
* Copyright (C) 2006 Unai Uribarri
* Copyright (C) 2008 linwizard.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* 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 Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/htcpld.h>
#include <linux/leds.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <plat/omap7xx.h>
#include <plat/common.h>
#include <plat/board.h>
#include <plat/keypad.h>
#include <plat/usb.h>
#include <plat/mmc.h>
#include <mach/irqs.h>
#include <linux/delay.h>
/* LCD register definition */
#define OMAP_LCDC_CONTROL (0xfffec000 + 0x00)
#define OMAP_LCDC_STATUS (0xfffec000 + 0x10)
#define OMAP_DMA_LCD_CCR (0xfffee300 + 0xc2)
#define OMAP_DMA_LCD_CTRL (0xfffee300 + 0xc4)
#define OMAP_LCDC_CTRL_LCD_EN (1 << 0)
#define OMAP_LCDC_STAT_DONE (1 << 0)
/* GPIO definitions for the power button and keyboard slide switch */
#define HTCHERALD_GPIO_POWER 139
#define HTCHERALD_GPIO_SLIDE 174
#define HTCHERALD_GIRQ_BTNS 141
/* GPIO definitions for the touchscreen */
#define HTCHERALD_GPIO_TS 76
/* HTCPLD definitions */
/*
* CPLD Logic
*
* Chip 3 - 0x03
*
* Function 7 6 5 4 3 2 1 0
* ------------------------------------
* DPAD light x x x x x x x 1
* SoundDev x x x x 1 x x x
* Screen white 1 x x x x x x x
* MMC power on x x x x x 1 x x
* Happy times (n) 0 x x x x 1 x x
*
* Chip 4 - 0x04
*
* Function 7 6 5 4 3 2 1 0
* ------------------------------------
* Keyboard light x x x x x x x 1
* LCD Bright (4) x x x x x 1 1 x
* LCD Bright (3) x x x x x 0 1 x
* LCD Bright (2) x x x x x 1 0 x
* LCD Bright (1) x x x x x 0 0 x
* LCD Off x x x x 0 x x x
* LCD image (fb) 1 x x x x x x x
* LCD image (white) 0 x x x x x x x
* Caps lock LED x x 1 x x x x x
*
* Chip 5 - 0x05
*
* Function 7 6 5 4 3 2 1 0
* ------------------------------------
* Red (solid) x x x x x 1 x x
* Red (flash) x x x x x x 1 x
* Green (GSM flash) x x x x 1 x x x
* Green (GSM solid) x x x 1 x x x x
* Green (wifi flash) x x 1 x x x x x
* Blue (bt flash) x 1 x x x x x x
* DPAD Int Enable 1 x x x x x x 0
*
* (Combinations of the above can be made for different colors.)
* The direction pad interrupt enable must be set each time the
* interrupt is handled.
*
* Chip 6 - 0x06
*
* Function 7 6 5 4 3 2 1 0
* ------------------------------------
* Vibrator x x x x 1 x x x
* Alt LED x x x 1 x x x x
* Screen white 1 x x x x x x x
* Screen white x x 1 x x x x x
* Screen white x 0 x x x x x x
* Enable kbd dpad x x x x x x 0 x
* Happy Times 0 1 0 x x x 0 x
*/
/*
* HTCPLD GPIO lines start 16 after OMAP_MAX_GPIO_LINES to account
* for the 16 MPUIO lines.
*/
#define HTCPLD_GPIO_START_OFFSET (OMAP_MAX_GPIO_LINES + 16)
#define HTCPLD_IRQ(chip, offset) (OMAP_IRQ_END + 8 * (chip) + (offset))
#define HTCPLD_BASE(chip, offset) \
(HTCPLD_GPIO_START_OFFSET + 8 * (chip) + (offset))
#define HTCPLD_GPIO_LED_DPAD HTCPLD_BASE(0, 0)
#define HTCPLD_GPIO_LED_KBD HTCPLD_BASE(1, 0)
#define HTCPLD_GPIO_LED_CAPS HTCPLD_BASE(1, 5)
#define HTCPLD_GPIO_LED_RED_FLASH HTCPLD_BASE(2, 1)
#define HTCPLD_GPIO_LED_RED_SOLID HTCPLD_BASE(2, 2)
#define HTCPLD_GPIO_LED_GREEN_FLASH HTCPLD_BASE(2, 3)
#define HTCPLD_GPIO_LED_GREEN_SOLID HTCPLD_BASE(2, 4)
#define HTCPLD_GPIO_LED_WIFI HTCPLD_BASE(2, 5)
#define HTCPLD_GPIO_LED_BT HTCPLD_BASE(2, 6)
#define HTCPLD_GPIO_LED_VIBRATE HTCPLD_BASE(3, 3)
#define HTCPLD_GPIO_LED_ALT HTCPLD_BASE(3, 4)
#define HTCPLD_GPIO_RIGHT_KBD HTCPLD_BASE(6, 7)
#define HTCPLD_GPIO_UP_KBD HTCPLD_BASE(6, 6)
#define HTCPLD_GPIO_LEFT_KBD HTCPLD_BASE(6, 5)
#define HTCPLD_GPIO_DOWN_KBD HTCPLD_BASE(6, 4)
#define HTCPLD_GPIO_RIGHT_DPAD HTCPLD_BASE(7, 7)
#define HTCPLD_GPIO_UP_DPAD HTCPLD_BASE(7, 6)
#define HTCPLD_GPIO_LEFT_DPAD HTCPLD_BASE(7, 5)
#define HTCPLD_GPIO_DOWN_DPAD HTCPLD_BASE(7, 4)
#define HTCPLD_GPIO_ENTER_DPAD HTCPLD_BASE(7, 3)
/*
* The htcpld chip requires a gpio write to a specific line
* to re-enable interrupts after one has occurred.
*/
#define HTCPLD_GPIO_INT_RESET_HI HTCPLD_BASE(2, 7)
#define HTCPLD_GPIO_INT_RESET_LO HTCPLD_BASE(2, 0)
/* Chip 5 */
#define HTCPLD_IRQ_RIGHT_KBD HTCPLD_IRQ(0, 7)
#define HTCPLD_IRQ_UP_KBD HTCPLD_IRQ(0, 6)
#define HTCPLD_IRQ_LEFT_KBD HTCPLD_IRQ(0, 5)
#define HTCPLD_IRQ_DOWN_KBD HTCPLD_IRQ(0, 4)
/* Chip 6 */
#define HTCPLD_IRQ_RIGHT_DPAD HTCPLD_IRQ(1, 7)
#define HTCPLD_IRQ_UP_DPAD HTCPLD_IRQ(1, 6)
#define HTCPLD_IRQ_LEFT_DPAD HTCPLD_IRQ(1, 5)
#define HTCPLD_IRQ_DOWN_DPAD HTCPLD_IRQ(1, 4)
#define HTCPLD_IRQ_ENTER_DPAD HTCPLD_IRQ(1, 3)
/* Keyboard definition */
static int htc_herald_keymap[] = {
KEY(0, 0, KEY_RECORD), /* Mail button */
KEY(0, 1, KEY_CAMERA), /* Camera */
KEY(0, 2, KEY_PHONE), /* Send key */
KEY(0, 3, KEY_VOLUMEUP), /* Volume up */
KEY(0, 4, KEY_F2), /* Right bar (landscape) */
KEY(0, 5, KEY_MAIL), /* Win key (portrait) */
KEY(0, 6, KEY_DIRECTORY), /* Right bar (protrait) */
KEY(1, 0, KEY_LEFTCTRL), /* Windows key */
KEY(1, 1, KEY_COMMA),
KEY(1, 2, KEY_M),
KEY(1, 3, KEY_K),
KEY(1, 4, KEY_SLASH), /* OK key */
KEY(1, 5, KEY_I),
KEY(1, 6, KEY_U),
KEY(2, 0, KEY_LEFTALT),
KEY(2, 1, KEY_TAB),
KEY(2, 2, KEY_N),
KEY(2, 3, KEY_J),
KEY(2, 4, KEY_ENTER),
KEY(2, 5, KEY_H),
KEY(2, 6, KEY_Y),
KEY(3, 0, KEY_SPACE),
KEY(3, 1, KEY_L),
KEY(3, 2, KEY_B),
KEY(3, 3, KEY_V),
KEY(3, 4, KEY_BACKSPACE),
KEY(3, 5, KEY_G),
KEY(3, 6, KEY_T),
KEY(4, 0, KEY_CAPSLOCK), /* Shift */
KEY(4, 1, KEY_C),
KEY(4, 2, KEY_F),
KEY(4, 3, KEY_R),
KEY(4, 4, KEY_O),
KEY(4, 5, KEY_E),
KEY(4, 6, KEY_D),
KEY(5, 0, KEY_X),
KEY(5, 1, KEY_Z),
KEY(5, 2, KEY_S),
KEY(5, 3, KEY_W),
KEY(5, 4, KEY_P),
KEY(5, 5, KEY_Q),
KEY(5, 6, KEY_A),
KEY(6, 0, KEY_CONNECT), /* Voice button */
KEY(6, 2, KEY_CANCEL), /* End key */
KEY(6, 3, KEY_VOLUMEDOWN), /* Volume down */
KEY(6, 4, KEY_F1), /* Left bar (landscape) */
KEY(6, 5, KEY_WWW), /* OK button (portrait) */
KEY(6, 6, KEY_CALENDAR), /* Left bar (portrait) */
0
};
struct omap_kp_platform_data htcherald_kp_data = {
.rows = 7,
.cols = 7,
.delay = 20,
.rep = 1,
.keymap = htc_herald_keymap,
};
static struct resource kp_resources[] = {
[0] = {
.start = INT_7XX_MPUIO_KEYPAD,
.end = INT_7XX_MPUIO_KEYPAD,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device kp_device = {
.name = "omap-keypad",
.id = -1,
.dev = {
.platform_data = &htcherald_kp_data,
},
.num_resources = ARRAY_SIZE(kp_resources),
.resource = kp_resources,
};
/* GPIO buttons for keyboard slide and power button */
static struct gpio_keys_button herald_gpio_keys_table[] = {
{BTN_0, HTCHERALD_GPIO_POWER, 1, "POWER", EV_KEY, 1, 20},
{SW_LID, HTCHERALD_GPIO_SLIDE, 0, "SLIDE", EV_SW, 1, 20},
{KEY_LEFT, HTCPLD_GPIO_LEFT_KBD, 1, "LEFT", EV_KEY, 1, 20},
{KEY_RIGHT, HTCPLD_GPIO_RIGHT_KBD, 1, "RIGHT", EV_KEY, 1, 20},
{KEY_UP, HTCPLD_GPIO_UP_KBD, 1, "UP", EV_KEY, 1, 20},
{KEY_DOWN, HTCPLD_GPIO_DOWN_KBD, 1, "DOWN", EV_KEY, 1, 20},
{KEY_LEFT, HTCPLD_GPIO_LEFT_DPAD, 1, "DLEFT", EV_KEY, 1, 20},
{KEY_RIGHT, HTCPLD_GPIO_RIGHT_DPAD, 1, "DRIGHT", EV_KEY, 1, 20},
{KEY_UP, HTCPLD_GPIO_UP_DPAD, 1, "DUP", EV_KEY, 1, 20},
{KEY_DOWN, HTCPLD_GPIO_DOWN_DPAD, 1, "DDOWN", EV_KEY, 1, 20},
{KEY_ENTER, HTCPLD_GPIO_ENTER_DPAD, 1, "DENTER", EV_KEY, 1, 20},
};
static struct gpio_keys_platform_data herald_gpio_keys_data = {
.buttons = herald_gpio_keys_table,
.nbuttons = ARRAY_SIZE(herald_gpio_keys_table),
.rep = 1,
};
static struct platform_device herald_gpiokeys_device = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &herald_gpio_keys_data,
},
};
/* LEDs for the Herald. These connect to the HTCPLD GPIO device. */
static struct gpio_led gpio_leds[] = {
{"dpad", NULL, HTCPLD_GPIO_LED_DPAD, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"kbd", NULL, HTCPLD_GPIO_LED_KBD, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"vibrate", NULL, HTCPLD_GPIO_LED_VIBRATE, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"green_solid", NULL, HTCPLD_GPIO_LED_GREEN_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"green_flash", NULL, HTCPLD_GPIO_LED_GREEN_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"red_solid", "mmc0", HTCPLD_GPIO_LED_RED_SOLID, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"red_flash", NULL, HTCPLD_GPIO_LED_RED_FLASH, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"wifi", NULL, HTCPLD_GPIO_LED_WIFI, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"bt", NULL, HTCPLD_GPIO_LED_BT, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"caps", NULL, HTCPLD_GPIO_LED_CAPS, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
{"alt", NULL, HTCPLD_GPIO_LED_ALT, 0, 0, LEDS_GPIO_DEFSTATE_OFF},
};
static struct gpio_led_platform_data gpio_leds_data = {
.leds = gpio_leds,
.num_leds = ARRAY_SIZE(gpio_leds),
};
static struct platform_device gpio_leds_device = {
.name = "leds-gpio",
.id = 0,
.dev = {
.platform_data = &gpio_leds_data,
},
};
/* HTC PLD chips */
static struct resource htcpld_resources[] = {
[0] = {
.start = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
.end = OMAP_GPIO_IRQ(HTCHERALD_GIRQ_BTNS),
.flags = IORESOURCE_IRQ,
},
};
struct htcpld_chip_platform_data htcpld_chips[] = {
[0] = {
.addr = 0x03,
.reset = 0x04,
.num_gpios = 8,
.gpio_out_base = HTCPLD_BASE(0, 0),
.gpio_in_base = HTCPLD_BASE(4, 0),
},
[1] = {
.addr = 0x04,
.reset = 0x8e,
.num_gpios = 8,
.gpio_out_base = HTCPLD_BASE(1, 0),
.gpio_in_base = HTCPLD_BASE(5, 0),
},
[2] = {
.addr = 0x05,
.reset = 0x80,
.num_gpios = 8,
.gpio_out_base = HTCPLD_BASE(2, 0),
.gpio_in_base = HTCPLD_BASE(6, 0),
.irq_base = HTCPLD_IRQ(0, 0),
.num_irqs = 8,
},
[3] = {
.addr = 0x06,
.reset = 0x40,
.num_gpios = 8,
.gpio_out_base = HTCPLD_BASE(3, 0),
.gpio_in_base = HTCPLD_BASE(7, 0),
.irq_base = HTCPLD_IRQ(1, 0),
.num_irqs = 8,
},
};
struct htcpld_core_platform_data htcpld_pfdata = {
.int_reset_gpio_hi = HTCPLD_GPIO_INT_RESET_HI,
.int_reset_gpio_lo = HTCPLD_GPIO_INT_RESET_LO,
.i2c_adapter_id = 1,
.chip = htcpld_chips,
.num_chip = ARRAY_SIZE(htcpld_chips),
};
static struct platform_device htcpld_device = {
.name = "i2c-htcpld",
.id = -1,
.resource = htcpld_resources,
.num_resources = ARRAY_SIZE(htcpld_resources),
.dev = {
.platform_data = &htcpld_pfdata,
},
};
/* USB Device */
static struct omap_usb_config htcherald_usb_config __initdata = {
.otg = 0,
.register_host = 0,
.register_dev = 1,
.hmc_mode = 4,
.pins[0] = 2,
};
/* LCD Device resources */
static struct omap_lcd_config htcherald_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel htcherald_config[] __initdata = {
{ OMAP_TAG_LCD, &htcherald_lcd_config },
};
static struct platform_device lcd_device = {
.name = "lcd_htcherald",
.id = -1,
};
/* MMC Card */
#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
static struct omap_mmc_platform_data htc_mmc1_data = {
.nr_slots = 1,
.switch_slot = NULL,
.slots[0] = {
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
.name = "mmcblk",
.nomux = 1,
.wires = 4,
.switch_pin = -1,
},
};
static struct omap_mmc_platform_data *htc_mmc_data[1];
#endif
/* Platform devices for the Herald */
static struct platform_device *devices[] __initdata = {
&kp_device,
&lcd_device,
&htcpld_device,
&gpio_leds_device,
&herald_gpiokeys_device,
};
/*
* Touchscreen
*/
static const struct ads7846_platform_data htcherald_ts_platform_data = {
.model = 7846,
.keep_vref_on = 1,
.x_plate_ohms = 496,
.gpio_pendown = HTCHERALD_GPIO_TS,
.pressure_max = 100000,
.pressure_min = 5000,
.x_min = 528,
.x_max = 3760,
.y_min = 624,
.y_max = 3760,
};
static struct spi_board_info __initdata htcherald_spi_board_info[] = {
{
.modalias = "ads7846",
.platform_data = &htcherald_ts_platform_data,
.irq = OMAP_GPIO_IRQ(HTCHERALD_GPIO_TS),
.max_speed_hz = 2500000,
.bus_num = 2,
.chip_select = 1,
}
};
/*
* Init functions from here on
*/
static void __init htcherald_lcd_init(void)
{
u32 reg;
unsigned int tries = 200;
/* disable controller if active */
reg = omap_readl(OMAP_LCDC_CONTROL);
if (reg & OMAP_LCDC_CTRL_LCD_EN) {
reg &= ~OMAP_LCDC_CTRL_LCD_EN;
omap_writel(reg, OMAP_LCDC_CONTROL);
/* wait for end of frame */
while (!(omap_readl(OMAP_LCDC_STATUS) & OMAP_LCDC_STAT_DONE)) {
tries--;
if (!tries)
break;
}
if (!tries)
printk(KERN_WARNING "Timeout waiting for end of frame "
"-- LCD may not be available\n");
/* turn off DMA */
reg = omap_readw(OMAP_DMA_LCD_CCR);
reg &= ~(1 << 7);
omap_writew(reg, OMAP_DMA_LCD_CCR);
reg = omap_readw(OMAP_DMA_LCD_CTRL);
reg &= ~(1 << 8);
omap_writew(reg, OMAP_DMA_LCD_CTRL);
}
}
static void __init htcherald_map_io(void)
{
omap1_map_common_io();
/*
* The LCD panel must be disabled and DMA turned off here, as doing
* it later causes the LCD never to reinitialize.
*/
htcherald_lcd_init();
printk(KERN_INFO "htcherald_map_io done.\n");
}
static void __init htcherald_disable_watchdog(void)
{
/* Disable watchdog if running */
if (omap_readl(OMAP_WDT_TIMER_MODE) & 0x8000) {
/*
* disable a potentially running watchdog timer before
* it kills us.
*/
printk(KERN_WARNING "OMAP850 Watchdog seems to be activated, disabling it for now.\n");
omap_writel(0xF5, OMAP_WDT_TIMER_MODE);
omap_writel(0xA0, OMAP_WDT_TIMER_MODE);
}
}
#define HTCHERALD_GPIO_USB_EN1 33
#define HTCHERALD_GPIO_USB_EN2 73
#define HTCHERALD_GPIO_USB_DM 35
#define HTCHERALD_GPIO_USB_DP 36
static void __init htcherald_usb_enable(void)
{
unsigned int tries = 20;
unsigned int value = 0;
/* Request the GPIOs we need to control here */
if (gpio_request(HTCHERALD_GPIO_USB_EN1, "herald_usb") < 0)
goto err1;
if (gpio_request(HTCHERALD_GPIO_USB_EN2, "herald_usb") < 0)
goto err2;
if (gpio_request(HTCHERALD_GPIO_USB_DM, "herald_usb") < 0)
goto err3;
if (gpio_request(HTCHERALD_GPIO_USB_DP, "herald_usb") < 0)
goto err4;
/* force USB_EN GPIO to 0 */
do {
/* output low */
gpio_direction_output(HTCHERALD_GPIO_USB_EN1, 0);
} while ((value = gpio_get_value(HTCHERALD_GPIO_USB_EN1)) == 1 &&
--tries);
if (value == 1)
printk(KERN_WARNING "Unable to reset USB, trying to continue\n");
gpio_direction_output(HTCHERALD_GPIO_USB_EN2, 0); /* output low */
gpio_direction_input(HTCHERALD_GPIO_USB_DM); /* input */
gpio_direction_input(HTCHERALD_GPIO_USB_DP); /* input */
goto done;
err4:
gpio_free(HTCHERALD_GPIO_USB_DM);
err3:
gpio_free(HTCHERALD_GPIO_USB_EN2);
err2:
gpio_free(HTCHERALD_GPIO_USB_EN1);
err1:
printk(KERN_ERR "Unabled to request GPIO for USB\n");
done:
printk(KERN_INFO "USB setup complete.\n");
}
static void __init htcherald_init(void)
{
printk(KERN_INFO "HTC Herald init.\n");
/* Do board initialization before we register all the devices */
omap_gpio_init();
omap_board_config = htcherald_config;
omap_board_config_size = ARRAY_SIZE(htcherald_config);
platform_add_devices(devices, ARRAY_SIZE(devices));
htcherald_disable_watchdog();
htcherald_usb_enable();
omap1_usb_init(&htcherald_usb_config);
spi_register_board_info(htcherald_spi_board_info,
ARRAY_SIZE(htcherald_spi_board_info));
omap_register_i2c_bus(1, 100, NULL, 0);
#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
htc_mmc_data[0] = &htc_mmc1_data;
omap1_init_mmc(htc_mmc_data, 1);
#endif
}
static void __init htcherald_init_irq(void)
{
printk(KERN_INFO "htcherald_init_irq.\n");
omap1_init_common_hw();
omap_init_irq();
}
MACHINE_START(HERALD, "HTC Herald")
/* Maintainer: Cory Maccarrone <darkstar6262@gmail.com> */
/* Maintainer: wing-linux.sourceforge.net */
.boot_params = 0x10000100,
.map_io = htcherald_map_io,
.reserve = omap_reserve,
.init_irq = htcherald_init_irq,
.init_machine = htcherald_init,
.timer = &omap_timer,
MACHINE_END
