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android_kernel_motorola_sm6225/arch/arm/mach-pxa/palmtreo.c
Mike Dunn 2c33727a62 ARM: palmtreo: fix lcd initilialization on treo680 
This patch gets the LCD working on my Palm Treo680 by adding some code that
manages the three gpios interfaced to the lcd on the Treo 680.  The precise role
of each gpio in the hardware architecture is not entirely clear to me; this
patch is the result of trial-and-error and observing how the PalmOS code
initializes the lcd.

The need for this patch is not evident when Linux is loaded from PalmOS, because
at that point the lcd-related gpios have already been configured.  But when
booting the kernel by other means, this patch is required unless the bootloader
has performed the necessary initialializations.

Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Acked-by: Tomas Cech <sleep_walker@suse.cz>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2013-01-23 16:56:32 +08:00

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/*
* Hardware definitions for Palm Treo smartphones
*
* currently supported:
* Palm Treo 680 (GSM)
* Palm Centro 685 (GSM)
*
* Author: Tomas Cech <sleep_walker@suse.cz>
*
* 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.
*
* (find more info at www.hackndev.com)
*
*/
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/memblock.h>
#include <linux/pda_power.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.h>
#include <linux/power_supply.h>
#include <linux/w1-gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/pxa27x.h>
#include <mach/pxa27x-udc.h>
#include <mach/audio.h>
#include <mach/palmtreo.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/irda-pxaficp.h>
#include <linux/platform_data/keypad-pxa27x.h>
#include <mach/udc.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <mach/pxa2xx-regs.h>
#include <linux/platform_data/asoc-palm27x.h>
#include <linux/platform_data/camera-pxa.h>
#include <mach/palm27x.h>
#include <sound/pxa2xx-lib.h>
#include "generic.h"
#include "devices.h"
/******************************************************************************
* Pin configuration
******************************************************************************/
static unsigned long treo_pin_config[] __initdata = {
/* MMC */
GPIO32_MMC_CLK,
GPIO92_MMC_DAT_0,
GPIO109_MMC_DAT_1,
GPIO110_MMC_DAT_2,
GPIO111_MMC_DAT_3,
GPIO112_MMC_CMD,
GPIO113_GPIO, /* SD detect */
/* AC97 */
GPIO28_AC97_BITCLK,
GPIO29_AC97_SDATA_IN_0,
GPIO30_AC97_SDATA_OUT,
GPIO31_AC97_SYNC,
GPIO89_AC97_SYSCLK,
GPIO95_AC97_nRESET,
/* IrDA */
GPIO46_FICP_RXD,
GPIO47_FICP_TXD,
/* PWM */
GPIO16_PWM0_OUT,
/* USB */
GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH, /* usb detect */
/* MATRIX KEYPAD */
GPIO101_KP_MKIN_1,
GPIO102_KP_MKIN_2,
GPIO97_KP_MKIN_3,
GPIO98_KP_MKIN_4,
GPIO91_KP_MKIN_6,
GPIO13_KP_MKIN_7,
GPIO103_KP_MKOUT_0 | MFP_LPM_DRIVE_HIGH,
GPIO104_KP_MKOUT_1,
GPIO105_KP_MKOUT_2,
GPIO106_KP_MKOUT_3,
GPIO107_KP_MKOUT_4,
GPIO108_KP_MKOUT_5,
GPIO96_KP_MKOUT_6,
GPIO93_KP_DKIN_0 | WAKEUP_ON_LEVEL_HIGH, /* Hotsync button */
/* Quick Capture Interface */
GPIO84_CIF_FV,
GPIO85_CIF_LV,
GPIO53_CIF_MCLK,
GPIO54_CIF_PCLK,
GPIO81_CIF_DD_0,
GPIO55_CIF_DD_1,
GPIO51_CIF_DD_2,
GPIO50_CIF_DD_3,
GPIO52_CIF_DD_4,
GPIO48_CIF_DD_5,
GPIO17_CIF_DD_6,
GPIO12_CIF_DD_7,
/* I2C */
GPIO117_I2C_SCL,
GPIO118_I2C_SDA,
/* GSM */
GPIO14_GPIO | WAKEUP_ON_EDGE_BOTH, /* GSM host wake up */
GPIO34_FFUART_RXD,
GPIO35_FFUART_CTS,
GPIO39_FFUART_TXD,
GPIO41_FFUART_RTS,
/* MISC. */
GPIO0_GPIO | WAKEUP_ON_EDGE_BOTH, /* external power detect */
GPIO15_GPIO | WAKEUP_ON_EDGE_BOTH, /* silent switch */
GPIO116_GPIO, /* headphone detect */
GPIO11_GPIO | WAKEUP_ON_EDGE_BOTH, /* bluetooth host wake up */
};
#ifdef CONFIG_MACH_TREO680
static unsigned long treo680_pin_config[] __initdata = {
GPIO33_GPIO, /* SD read only */
/* MATRIX KEYPAD - different wake up source */
GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
GPIO99_KP_MKIN_5,
/* LCD... L_BIAS alt fn not configured on Treo680; is GPIO instead */
GPIOxx_LCD_16BPP,
GPIO74_LCD_FCLK,
GPIO75_LCD_LCLK,
GPIO76_LCD_PCLK,
};
#endif /* CONFIG_MACH_TREO680 */
#ifdef CONFIG_MACH_CENTRO
static unsigned long centro685_pin_config[] __initdata = {
/* Bluetooth attached to BT UART*/
MFP_CFG_OUT(GPIO80, AF0, DRIVE_LOW), /* power: LOW = off */
GPIO42_BTUART_RXD,
GPIO43_BTUART_TXD,
GPIO44_BTUART_CTS,
GPIO45_BTUART_RTS,
/* MATRIX KEYPAD - different wake up source */
GPIO100_KP_MKIN_0,
GPIO99_KP_MKIN_5 | WAKEUP_ON_LEVEL_HIGH,
/* LCD */
GPIOxx_LCD_TFT_16BPP,
};
#endif /* CONFIG_MACH_CENTRO */
/******************************************************************************
* GPIO keyboard
******************************************************************************/
#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
static unsigned int treo680_matrix_keys[] = {
KEY(0, 0, KEY_F8), /* Red/Off/Power */
KEY(0, 1, KEY_LEFT),
KEY(0, 2, KEY_LEFTCTRL), /* Alternate */
KEY(0, 3, KEY_L),
KEY(0, 4, KEY_A),
KEY(0, 5, KEY_Q),
KEY(0, 6, KEY_P),
KEY(1, 0, KEY_RIGHTCTRL), /* Menu */
KEY(1, 1, KEY_RIGHT),
KEY(1, 2, KEY_LEFTSHIFT), /* Left shift */
KEY(1, 3, KEY_Z),
KEY(1, 4, KEY_S),
KEY(1, 5, KEY_W),
KEY(2, 0, KEY_F1), /* Phone */
KEY(2, 1, KEY_UP),
KEY(2, 2, KEY_0),
KEY(2, 3, KEY_X),
KEY(2, 4, KEY_D),
KEY(2, 5, KEY_E),
KEY(3, 0, KEY_F10), /* Calendar */
KEY(3, 1, KEY_DOWN),
KEY(3, 2, KEY_SPACE),
KEY(3, 3, KEY_C),
KEY(3, 4, KEY_F),
KEY(3, 5, KEY_R),
KEY(4, 0, KEY_F12), /* Mail */
KEY(4, 1, KEY_KPENTER),
KEY(4, 2, KEY_RIGHTALT), /* Alt */
KEY(4, 3, KEY_V),
KEY(4, 4, KEY_G),
KEY(4, 5, KEY_T),
KEY(5, 0, KEY_F9), /* Home */
KEY(5, 1, KEY_PAGEUP), /* Side up */
KEY(5, 2, KEY_DOT),
KEY(5, 3, KEY_B),
KEY(5, 4, KEY_H),
KEY(5, 5, KEY_Y),
KEY(6, 0, KEY_TAB), /* Side Activate */
KEY(6, 1, KEY_PAGEDOWN), /* Side down */
KEY(6, 2, KEY_ENTER),
KEY(6, 3, KEY_N),
KEY(6, 4, KEY_J),
KEY(6, 5, KEY_U),
KEY(7, 0, KEY_F6), /* Green/Call */
KEY(7, 1, KEY_O),
KEY(7, 2, KEY_BACKSPACE),
KEY(7, 3, KEY_M),
KEY(7, 4, KEY_K),
KEY(7, 5, KEY_I),
};
static unsigned int centro_matrix_keys[] = {
KEY(0, 0, KEY_F9), /* Home */
KEY(0, 1, KEY_LEFT),
KEY(0, 2, KEY_LEFTCTRL), /* Alternate */
KEY(0, 3, KEY_L),
KEY(0, 4, KEY_A),
KEY(0, 5, KEY_Q),
KEY(0, 6, KEY_P),
KEY(1, 0, KEY_RIGHTCTRL), /* Menu */
KEY(1, 1, KEY_RIGHT),
KEY(1, 2, KEY_LEFTSHIFT), /* Left shift */
KEY(1, 3, KEY_Z),
KEY(1, 4, KEY_S),
KEY(1, 5, KEY_W),
KEY(2, 0, KEY_F1), /* Phone */
KEY(2, 1, KEY_UP),
KEY(2, 2, KEY_0),
KEY(2, 3, KEY_X),
KEY(2, 4, KEY_D),
KEY(2, 5, KEY_E),
KEY(3, 0, KEY_F10), /* Calendar */
KEY(3, 1, KEY_DOWN),
KEY(3, 2, KEY_SPACE),
KEY(3, 3, KEY_C),
KEY(3, 4, KEY_F),
KEY(3, 5, KEY_R),
KEY(4, 0, KEY_F12), /* Mail */
KEY(4, 1, KEY_KPENTER),
KEY(4, 2, KEY_RIGHTALT), /* Alt */
KEY(4, 3, KEY_V),
KEY(4, 4, KEY_G),
KEY(4, 5, KEY_T),
KEY(5, 0, KEY_F8), /* Red/Off/Power */
KEY(5, 1, KEY_PAGEUP), /* Side up */
KEY(5, 2, KEY_DOT),
KEY(5, 3, KEY_B),
KEY(5, 4, KEY_H),
KEY(5, 5, KEY_Y),
KEY(6, 0, KEY_TAB), /* Side Activate */
KEY(6, 1, KEY_PAGEDOWN), /* Side down */
KEY(6, 2, KEY_ENTER),
KEY(6, 3, KEY_N),
KEY(6, 4, KEY_J),
KEY(6, 5, KEY_U),
KEY(7, 0, KEY_F6), /* Green/Call */
KEY(7, 1, KEY_O),
KEY(7, 2, KEY_BACKSPACE),
KEY(7, 3, KEY_M),
KEY(7, 4, KEY_K),
KEY(7, 5, KEY_I),
};
static struct pxa27x_keypad_platform_data treo680_keypad_pdata = {
.matrix_key_rows = 8,
.matrix_key_cols = 7,
.matrix_key_map = treo680_matrix_keys,
.matrix_key_map_size = ARRAY_SIZE(treo680_matrix_keys),
.direct_key_map = { KEY_CONNECT },
.direct_key_num = 1,
.debounce_interval = 30,
};
static void __init palmtreo_kpc_init(void)
{
static struct pxa27x_keypad_platform_data *data = &treo680_keypad_pdata;
if (machine_is_centro()) {
data->matrix_key_map = centro_matrix_keys;
data->matrix_key_map_size = ARRAY_SIZE(centro_matrix_keys);
}
pxa_set_keypad_info(&treo680_keypad_pdata);
}
#else
static inline void palmtreo_kpc_init(void) {}
#endif
/******************************************************************************
* USB host
******************************************************************************/
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static struct pxaohci_platform_data treo680_ohci_info = {
.port_mode = PMM_PERPORT_MODE,
.flags = ENABLE_PORT1 | ENABLE_PORT3,
.power_budget = 0,
};
static void __init palmtreo_uhc_init(void)
{
if (machine_is_treo680())
pxa_set_ohci_info(&treo680_ohci_info);
}
#else
static inline void palmtreo_uhc_init(void) {}
#endif
/******************************************************************************
* Vibra and LEDs
******************************************************************************/
#ifdef CONFIG_MACH_TREO680
static struct gpio_led treo680_gpio_leds[] = {
{
.name = "treo680:vibra:vibra",
.default_trigger = "none",
.gpio = GPIO_NR_TREO680_VIBRATE_EN,
},
{
.name = "treo680:green:led",
.default_trigger = "mmc0",
.gpio = GPIO_NR_TREO_GREEN_LED,
},
{
.name = "treo680:white:keybbl",
.default_trigger = "none",
.gpio = GPIO_NR_TREO680_KEYB_BL,
},
};
static struct gpio_led_platform_data treo680_gpio_led_info = {
.leds = treo680_gpio_leds,
.num_leds = ARRAY_SIZE(treo680_gpio_leds),
};
static struct gpio_led centro_gpio_leds[] = {
{
.name = "centro:vibra:vibra",
.default_trigger = "none",
.gpio = GPIO_NR_CENTRO_VIBRATE_EN,
},
{
.name = "centro:green:led",
.default_trigger = "mmc0",
.gpio = GPIO_NR_TREO_GREEN_LED,
},
{
.name = "centro:white:keybbl",
.default_trigger = "none",
.active_low = 1,
.gpio = GPIO_NR_CENTRO_KEYB_BL,
},
};
static struct gpio_led_platform_data centro_gpio_led_info = {
.leds = centro_gpio_leds,
.num_leds = ARRAY_SIZE(centro_gpio_leds),
};
static struct platform_device palmtreo_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &treo680_gpio_led_info,
}
};
static void __init palmtreo_leds_init(void)
{
if (machine_is_centro())
palmtreo_leds.dev.platform_data = &centro_gpio_led_info;
platform_device_register(&palmtreo_leds);
}
#else
static inline void palmtreo_leds_init(void) {}
#endif
/******************************************************************************
* Machine init
******************************************************************************/
static void __init treo_reserve(void)
{
memblock_reserve(0xa0000000, 0x1000);
memblock_reserve(0xa2000000, 0x1000);
}
static void __init palmphone_common_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(treo_pin_config));
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
palm27x_pm_init(TREO_STR_BASE);
palm27x_lcd_init(GPIO_NR_TREO_BL_POWER, &palm_320x320_new_lcd_mode);
palm27x_udc_init(GPIO_NR_TREO_USB_DETECT, GPIO_NR_TREO_USB_PULLUP, 1);
palm27x_irda_init(GPIO_NR_TREO_IR_EN);
palm27x_ac97_init(-1, -1, -1, 95);
palm27x_pwm_init(GPIO_NR_TREO_BL_POWER, -1);
palm27x_power_init(GPIO_NR_TREO_POWER_DETECT, -1);
palm27x_pmic_init();
palmtreo_kpc_init();
palmtreo_uhc_init();
palmtreo_leds_init();
}
#ifdef CONFIG_MACH_TREO680
void __init treo680_gpio_init(void)
{
unsigned int gpio;
/* drive all three lcd gpios high initially */
const unsigned long lcd_flags = GPIOF_INIT_HIGH | GPIOF_DIR_OUT;
/*
* LCD GPIO initialization...
*/
/*
* This is likely the power to the lcd. Toggling it low/high appears to
* turn the lcd off/on. Can be toggled after lcd is initialized without
* any apparent adverse effects to the lcd operation. Note that this
* gpio line is used by the lcd controller as the L_BIAS signal, but
* treo680 configures it as gpio.
*/
gpio = GPIO_NR_TREO680_LCD_POWER;
if (gpio_request_one(gpio, lcd_flags, "LCD power") < 0)
goto fail;
/*
* These two are called "enables", for lack of a better understanding.
* If either of these are toggled after the lcd is initialized, the
* image becomes degraded. N.B. The IPL shipped with the treo
* configures GPIO_NR_TREO680_LCD_EN_N as output and drives it high. If
* the IPL is ever reprogrammed, this initialization may be need to be
* revisited.
*/
gpio = GPIO_NR_TREO680_LCD_EN;
if (gpio_request_one(gpio, lcd_flags, "LCD enable") < 0)
goto fail;
gpio = GPIO_NR_TREO680_LCD_EN_N;
if (gpio_request_one(gpio, lcd_flags, "LCD enable_n") < 0)
goto fail;
/* driving this low turns LCD on */
gpio_set_value(GPIO_NR_TREO680_LCD_EN_N, 0);
return;
fail:
pr_err("gpio %d initialization failed\n", gpio);
gpio_free(GPIO_NR_TREO680_LCD_POWER);
gpio_free(GPIO_NR_TREO680_LCD_EN);
gpio_free(GPIO_NR_TREO680_LCD_EN_N);
}
static void __init treo680_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(treo680_pin_config));
palmphone_common_init();
treo680_gpio_init();
palm27x_mmc_init(GPIO_NR_TREO_SD_DETECT_N, GPIO_NR_TREO680_SD_READONLY,
GPIO_NR_TREO680_SD_POWER, 0);
}
#endif
#ifdef CONFIG_MACH_CENTRO
static void __init centro_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(centro685_pin_config));
palmphone_common_init();
palm27x_mmc_init(GPIO_NR_TREO_SD_DETECT_N, -1,
GPIO_NR_CENTRO_SD_POWER, 1);
}
#endif
#ifdef CONFIG_MACH_TREO680
MACHINE_START(TREO680, "Palm Treo 680")
.atag_offset = 0x100,
.map_io = pxa27x_map_io,
.reserve = treo_reserve,
.nr_irqs = PXA_NR_IRQS,
.init_irq = pxa27x_init_irq,
.handle_irq = pxa27x_handle_irq,
.timer = &pxa_timer,
.init_machine = treo680_init,
.restart = pxa_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_CENTRO
MACHINE_START(CENTRO, "Palm Centro 685")
.atag_offset = 0x100,
.map_io = pxa27x_map_io,
.reserve = treo_reserve,
.nr_irqs = PXA_NR_IRQS,
.init_irq = pxa27x_init_irq,
.handle_irq = pxa27x_handle_irq,
.timer = &pxa_timer,
.init_machine = centro_init,
.restart = pxa_restart,
MACHINE_END
#endif
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