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[ARM] pxa: PalmTE2 support for battery, UDC, IrDA and backlight
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Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
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Marek Vasut authored and Eric Miao committed Apr 4, 2009
1 parent 54088bf commit 8c8aa5f
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25 changes: 25 additions & 0 deletions arch/arm/mach-pxa/include/mach/palmte2.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,26 @@
/** HERE ARE GPIOs **/

/* GPIOs */
#define GPIO_NR_PALMTE2_POWER_DETECT 9
#define GPIO_NR_PALMTE2_HOTSYNC_BUTTON_N 4
#define GPIO_NR_PALMTE2_EARPHONE_DETECT 15

/* SD/MMC */
#define GPIO_NR_PALMTE2_SD_DETECT_N 10
#define GPIO_NR_PALMTE2_SD_POWER 55
#define GPIO_NR_PALMTE2_SD_READONLY 51

/* IRDA - disable GPIO connected to SD pin of tranceiver (TFBS4710?) ? */
#define GPIO_NR_PALMTE2_IR_DISABLE 48

/* USB */
#define GPIO_NR_PALMTE2_USB_DETECT_N 35
#define GPIO_NR_PALMTE2_USB_PULLUP 53

/* LCD/BACKLIGHT */
#define GPIO_NR_PALMTE2_BL_POWER 56
#define GPIO_NR_PALMTE2_LCD_POWER 37

/* KEYS */
#define GPIO_NR_PALMTE2_KEY_NOTES 5
#define GPIO_NR_PALMTE2_KEY_TASKS 7
Expand All @@ -40,4 +56,13 @@
#define PALMTE2_PRESCALER 0x3F
#define PALMTE2_PERIOD_NS 3500

/* BATTERY */
#define PALMTE2_BAT_MAX_VOLTAGE 4000 /* 4.00v current voltage */
#define PALMTE2_BAT_MIN_VOLTAGE 3550 /* 3.55v critical voltage */
#define PALMTE2_BAT_MAX_CURRENT 0 /* unknokn */
#define PALMTE2_BAT_MIN_CURRENT 0 /* unknown */
#define PALMTE2_BAT_MAX_CHARGE 1 /* unknown */
#define PALMTE2_BAT_MIN_CHARGE 1 /* unknown */
#define PALMTE2_MAX_LIFE_MINS 360 /* on-life in minutes */

#endif
188 changes: 188 additions & 0 deletions arch/arm/mach-pxa/palmte2.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,11 @@
#include <linux/irq.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/pda_power.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.h>
#include <linux/wm97xx_batt.h>
#include <linux/power_supply.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
Expand All @@ -32,6 +35,8 @@
#include <mach/mmc.h>
#include <mach/pxafb.h>
#include <mach/mfp-pxa25x.h>
#include <mach/irda.h>
#include <mach/udc.h>

#include "generic.h"
#include "devices.h"
Expand All @@ -56,6 +61,15 @@ static unsigned long palmte2_pin_config[] __initdata = {
/* PWM */
GPIO16_PWM0_OUT,

/* USB */
GPIO15_GPIO, /* usb detect */
GPIO53_GPIO, /* usb power */

/* IrDA */
GPIO48_GPIO, /* ir disable */
GPIO46_FICP_RXD,
GPIO47_FICP_TXD,

/* LCD */
GPIO58_LCD_LDD_0,
GPIO59_LCD_LDD_1,
Expand All @@ -76,6 +90,7 @@ static unsigned long palmte2_pin_config[] __initdata = {
GPIO74_LCD_FCLK,
GPIO75_LCD_LCLK,
GPIO76_LCD_PCLK,
GPIO77_LCD_BIAS,

/* GPIO KEYS */
GPIO5_GPIO, /* notes */
Expand All @@ -90,6 +105,10 @@ static unsigned long palmte2_pin_config[] __initdata = {

/* MISC */
GPIO1_RST, /* reset */
GPIO4_GPIO, /* Hotsync button */
GPIO9_GPIO, /* power detect */
GPIO37_GPIO, /* LCD power */
GPIO56_GPIO, /* Backlight power */
};

/******************************************************************************
Expand Down Expand Up @@ -205,11 +224,53 @@ static struct platform_device palmte2_pxa_keys = {
/******************************************************************************
* Backlight
******************************************************************************/
static int palmte2_backlight_init(struct device *dev)
{
int ret;

ret = gpio_request(GPIO_NR_PALMTE2_BL_POWER, "BL POWER");
if (ret)
goto err;
ret = gpio_direction_output(GPIO_NR_PALMTE2_BL_POWER, 0);
if (ret)
goto err2;
ret = gpio_request(GPIO_NR_PALMTE2_LCD_POWER, "LCD POWER");
if (ret)
goto err2;
ret = gpio_direction_output(GPIO_NR_PALMTE2_LCD_POWER, 0);
if (ret)
goto err3;

return 0;
err3:
gpio_free(GPIO_NR_PALMTE2_LCD_POWER);
err2:
gpio_free(GPIO_NR_PALMTE2_BL_POWER);
err:
return ret;
}

static int palmte2_backlight_notify(int brightness)
{
gpio_set_value(GPIO_NR_PALMTE2_BL_POWER, brightness);
gpio_set_value(GPIO_NR_PALMTE2_LCD_POWER, brightness);
return brightness;
}

static void palmte2_backlight_exit(struct device *dev)
{
gpio_free(GPIO_NR_PALMTE2_BL_POWER);
gpio_free(GPIO_NR_PALMTE2_LCD_POWER);
}

static struct platform_pwm_backlight_data palmte2_backlight_data = {
.pwm_id = 0,
.max_brightness = PALMTE2_MAX_INTENSITY,
.dft_brightness = PALMTE2_MAX_INTENSITY,
.pwm_period_ns = PALMTE2_PERIOD_NS,
.init = palmte2_backlight_init,
.notify = palmte2_backlight_notify,
.exit = palmte2_backlight_exit,
};

static struct platform_device palmte2_backlight = {
Expand All @@ -220,6 +281,119 @@ static struct platform_device palmte2_backlight = {
},
};

/******************************************************************************
* IrDA
******************************************************************************/
static int palmte2_irda_startup(struct device *dev)
{
int err;
err = gpio_request(GPIO_NR_PALMTE2_IR_DISABLE, "IR DISABLE");
if (err)
goto err;
err = gpio_direction_output(GPIO_NR_PALMTE2_IR_DISABLE, 1);
if (err)
gpio_free(GPIO_NR_PALMTE2_IR_DISABLE);
err:
return err;
}

static void palmte2_irda_shutdown(struct device *dev)
{
gpio_free(GPIO_NR_PALMTE2_IR_DISABLE);
}

static void palmte2_irda_transceiver_mode(struct device *dev, int mode)
{
gpio_set_value(GPIO_NR_PALMTE2_IR_DISABLE, mode & IR_OFF);
pxa2xx_transceiver_mode(dev, mode);
}

static struct pxaficp_platform_data palmte2_ficp_platform_data = {
.startup = palmte2_irda_startup,
.shutdown = palmte2_irda_shutdown,
.transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
.transceiver_mode = palmte2_irda_transceiver_mode,
};

/******************************************************************************
* UDC
******************************************************************************/
static struct pxa2xx_udc_mach_info palmte2_udc_info __initdata = {
.gpio_vbus = GPIO_NR_PALMTE2_USB_DETECT_N,
.gpio_vbus_inverted = 1,
.gpio_pullup = GPIO_NR_PALMTE2_USB_PULLUP,
.gpio_pullup_inverted = 0,
};

/******************************************************************************
* Power supply
******************************************************************************/
static int power_supply_init(struct device *dev)
{
int ret;

ret = gpio_request(GPIO_NR_PALMTE2_POWER_DETECT, "CABLE_STATE_AC");
if (ret)
goto err1;
ret = gpio_direction_input(GPIO_NR_PALMTE2_POWER_DETECT);
if (ret)
goto err2;

return 0;

err2:
gpio_free(GPIO_NR_PALMTE2_POWER_DETECT);
err1:
return ret;
}

static int palmte2_is_ac_online(void)
{
return gpio_get_value(GPIO_NR_PALMTE2_POWER_DETECT);
}

static void power_supply_exit(struct device *dev)
{
gpio_free(GPIO_NR_PALMTE2_POWER_DETECT);
}

static char *palmte2_supplicants[] = {
"main-battery",
};

static struct pda_power_pdata power_supply_info = {
.init = power_supply_init,
.is_ac_online = palmte2_is_ac_online,
.exit = power_supply_exit,
.supplied_to = palmte2_supplicants,
.num_supplicants = ARRAY_SIZE(palmte2_supplicants),
};

static struct platform_device power_supply = {
.name = "pda-power",
.id = -1,
.dev = {
.platform_data = &power_supply_info,
},
};

/******************************************************************************
* WM97xx battery
******************************************************************************/
static struct wm97xx_batt_info wm97xx_batt_pdata = {
.batt_aux = WM97XX_AUX_ID3,
.temp_aux = WM97XX_AUX_ID2,
.charge_gpio = -1,
.max_voltage = PALMTE2_BAT_MAX_VOLTAGE,
.min_voltage = PALMTE2_BAT_MIN_VOLTAGE,
.batt_mult = 1000,
.batt_div = 414,
.temp_mult = 1,
.temp_div = 1,
.batt_tech = POWER_SUPPLY_TECHNOLOGY_LIPO,
.batt_name = "main-batt",
};

/******************************************************************************
* Framebuffer
******************************************************************************/
Expand Down Expand Up @@ -254,15 +428,29 @@ static struct platform_device *devices[] __initdata = {
&palmte2_pxa_keys,
#endif
&palmte2_backlight,
&power_supply,
};

/* setup udc GPIOs initial state */
static void __init palmte2_udc_init(void)
{
if (!gpio_request(GPIO_NR_PALMTE2_USB_PULLUP, "UDC Vbus")) {
gpio_direction_output(GPIO_NR_PALMTE2_USB_PULLUP, 1);
gpio_free(GPIO_NR_PALMTE2_USB_PULLUP);
}
}

static void __init palmte2_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(palmte2_pin_config));

set_pxa_fb_info(&palmte2_lcd_screen);
pxa_set_mci_info(&palmte2_mci_platform_data);
palmte2_udc_init();
pxa_set_udc_info(&palmte2_udc_info);
pxa_set_ac97_info(NULL);
pxa_set_ficp_info(&palmte2_ficp_platform_data);
wm97xx_bat_set_pdata(&wm97xx_batt_pdata);

platform_add_devices(devices, ARRAY_SIZE(devices));
}
Expand Down

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