自学教程：C++ EXYNOS4_GPD0函数代码示例

int s3cfb_lcd_on(struct platform_device *pdev){#if !defined(CONFIG_FB_MDNIE_PWM)	int err;	err = gpio_request_one(EXYNOS4_GPD0(1), GPIOF_OUT_INIT_HIGH, "GPD0");	if (err) {		printk(KERN_ERR "failed to request GPD0 for lcd reset control/n");		return err;	}	gpio_set_value(GPIO_LCD_EN, GPIO_LEVEL_HIGH);	msleep(40);	/* LVDS_N_SHDN to high*/	gpio_set_value(GPIO_LVDS_NSHDN, GPIO_LEVEL_HIGH);	msleep(300);#if defined(CONFIG_FB_S5P_S6C1372)	gpio_set_value(GPIO_LED_BACKLIGHT_RESET, GPIO_LEVEL_HIGH);	mdelay(2);#else	gpio_set_value(GPIO_LCD_LDO_EN, GPIO_LEVEL_HIGH);	msleep(200);#endif	gpio_set_value(EXYNOS4_GPD0(1), GPIO_LEVEL_HIGH);	gpio_free(EXYNOS4_GPD0(1));#endif	return 0;}

static void lcd_lte480wv_set_power(struct plat_lcd_data *pd,				   unsigned int power){	if (power) {#if !defined(CONFIG_BACKLIGHT_PWM)		gpio_request_one(EXYNOS4_GPD0(1), GPIOF_OUT_INIT_HIGH, "GPD0");		gpio_free(EXYNOS4_GPD0(1));#endif		/* fire nRESET on power up */		gpio_request(EXYNOS4_GPX0(6), "GPX0");		gpio_direction_output(EXYNOS4_GPX0(6), 1);		mdelay(100);		gpio_set_value(EXYNOS4_GPX0(6), 0);		mdelay(10);		gpio_set_value(EXYNOS4_GPX0(6), 1);		mdelay(10);		gpio_free(EXYNOS4_GPX0(6));	} else {#if !defined(CONFIG_BACKLIGHT_PWM)		gpio_request_one(EXYNOS4_GPD0(1), GPIOF_OUT_INIT_LOW, "GPD0");		gpio_free(EXYNOS4_GPD0(1));#endif	}}

int s3cfb_backlight_off(struct platform_device *pdev){#if !defined(CONFIG_BACKLIGHT_PWM)	int err;	/* Backlight Low */	err = gpio_request_one(EXYNOS4_GPD0(0), GPIOF_OUT_INIT_LOW, "GPD0");	if (err) {		printk(KERN_ERR "failed to request GPD0 for "			"lcd backlight control/n");		return err;	}	gpio_free(EXYNOS4_GPD0(0));	/* LED_EN (SPI1_MOSI) Low */	err = gpio_request_one(EXYNOS4_GPB(2), GPIOF_OUT_INIT_LOW, "GPB");	if (err) {		printk(KERN_ERR "failed to request GPB for "			"lcd LED_EN control/n");		return err;	}	gpio_free(EXYNOS4_GPB(2));#endif	return 0;}

int s3cfb_lcd_off(struct platform_device *pdev){#if !defined(CONFIG_FB_MDNIE_PWM)	int err;	err = gpio_request_one(EXYNOS4_GPD0(1), GPIOF_OUT_INIT_LOW, "GPD0");	if (err) {		printk(KERN_ERR "failed to request GPD0 for "			"lcd reset control/n");		return err;	}	/* LVDS_nSHDN low*/	gpio_set_value(EXYNOS4_GPD0(1), GPIO_LEVEL_LOW);	gpio_free(EXYNOS4_GPD0(1));#if defined(CONFIG_FB_S5P_S6C1372)	gpio_set_value(GPIO_LED_BACKLIGHT_RESET, GPIO_LEVEL_LOW);	msleep(200);#else	gpio_set_value(GPIO_LCD_LDO_EN, GPIO_LEVEL_LOW);	msleep(200);#endif	/* LVDS_nSHDN low*/	gpio_set_value(GPIO_LVDS_NSHDN, GPIO_LEVEL_LOW);	msleep(40);	/* Disable LVDS Panel Power, 1.2, 1.8, display 3.3V */	gpio_set_value(GPIO_LCD_EN, GPIO_LEVEL_LOW);	msleep(400);#endif	return 0;}

static void motor_init_hw(void){	if (gpio_request(EXYNOS4_GPD0(0), "VIBTONE_PWM") < 0)		printk(KERN_ERR "[VIB] gpio requst is failed/n");	else {		gpio_direction_output(EXYNOS4_GPD0(0), 0);		printk(KERN_DEBUG "[VIB] gpio request is succeed/n");	}}

void ips_bl_on(int on){	int err;		err = gpio_request(EXYNOS4_GPD0(1), "PWMEN");	if (err) {		printk(KERN_ERR "failed to request PWMEN for "			"I2C control/n");		//return err;	}#if !defined(CONFIG_BACKLIGHT_PWM)	gpio_direction_output(EXYNOS4_GPD0(1), 1);	gpio_free(EXYNOS4_GPD0(1));	printk("SCP(%s, %d): LCD_PWM_ON/n", __FUNCTION__, __LINE__);#else	gpio_direction_output(EXYNOS4_GPD0(1), 0);	s3c_gpio_cfgpin(EXYNOS4_GPD0(1), (0x2 << 4));	gpio_free(EXYNOS4_GPD0(1));	printk("SCP(%s, %d): LCD_PWM_ON/n", __FUNCTION__, __LINE__);#endif}

	&s5p_device_hdmi,	&s5p_device_i2c_hdmiphy,	&s5p_device_jpeg,	&s5p_device_mfc,	&s5p_device_mfc_l,	&s5p_device_mfc_r,	&s5p_device_mixer,	&exynos4_device_ohci,	&origen_device_gpiokeys,	&origen_lcd_hv070wsa,	&origen_device_bluetooth,};/* LCD Backlight data */static struct samsung_bl_gpio_info origen_bl_gpio_info = {	.no		= EXYNOS4_GPD0(0),	.func		= S3C_GPIO_SFN(2),};static struct platform_pwm_backlight_data origen_bl_data = {	.pwm_id		= 0,	.pwm_period_ns	= 1000,};static void __init origen_bt_setup(void){	gpio_request(EXYNOS4_GPA0(0), "GPIO BT_UART");	/* 4 UART Pins configuration */	s3c_gpio_cfgrange_nopull(EXYNOS4_GPA0(0), 4, S3C_GPIO_SFN(2));	/* Setup BT Reset, this gpio will be requesed by rfkill-gpio */	s3c_gpio_cfgpin(EXYNOS4_GPX2(2), S3C_GPIO_OUTPUT);

static void motor_en(bool enable){	gpio_direction_output(EXYNOS4_GPD0(0), enable);	printk(KERN_DEBUG "[VIB] motor_enabled GPIO GPD0(0) : %d/n",	       gpio_get_value(EXYNOS4_GPD0(0)));}

void s3c_i2c7_cfg_gpio(struct platform_device *dev){	s3c_gpio_cfgall_range(EXYNOS4_GPD0(2), 2,			      S3C_GPIO_SFN(3), S3C_GPIO_PULL_UP);}

};static struct i2c_board_info smdk4x12_i2c_devs1[] __initdata = {	{ I2C_BOARD_INFO("wm8994", 0x1a), }};static struct i2c_board_info smdk4x12_i2c_devs3[] __initdata = {	/* nothing here yet */};static struct i2c_board_info smdk4x12_i2c_devs7[] __initdata = {	/* nothing here yet */};static struct samsung_bl_gpio_info smdk4x12_bl_gpio_info = {	.no = EXYNOS4_GPD0(1),	.func = S3C_GPIO_SFN(2),};static struct platform_pwm_backlight_data smdk4x12_bl_data = {	.pwm_id = 1,	.pwm_period_ns  = 1000,};static uint32_t smdk4x12_keymap[] __initdata = {	/* KEY(row, col, keycode) */	KEY(1, 0, KEY_D), KEY(1, 1, KEY_A), KEY(1, 2, KEY_B),	KEY(1, 3, KEY_E), KEY(1, 4, KEY_C)};static struct matrix_keymap_data smdk4x12_keymap_data __initdata = {

int s3cfb_backlight_on(struct platform_device *pdev){	int err;#if 0		//VLED_EN	err = gpio_request(EXYNOS4_GPC1(2), "GPC1_2");	if (err) {		printk(KERN_ERR "failed to request GPC1_2 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC1(2), 1);	s3c_gpio_cfgpin(EXYNOS4_GPC1(2), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC1(2));	mdelay(5);	printk("(%s, %d): BK_LCD_EN/n", __FUNCTION__, __LINE__);#endif	/*modify by cym 20121017 */#if 0	//VLED_ON	err = gpio_request(EXYNOS4_GPC0(1), "GPC0_1");	if (err) {		printk(KERN_ERR "failed to request GPC0_1 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC0(1), 1);	s3c_gpio_cfgpin(EXYNOS4_GPC0(1), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC0(1));	mdelay(5);	//err = gpio_request(EXYNOS4_GPD0(1), "GPD0_1");	if (err) {		printk(KERN_ERR "failed to request GPD0 for "			"lcd backlight control/n");		//return err;	}#if !defined(CONFIG_BACKLIGHT_PWM)	gpio_direction_output(EXYNOS4_GPD0(1), 1);	gpio_free(EXYNOS4_GPD0(1));#else	gpio_direction_output(EXYNOS4_GPD0(1), 0);	s3c_gpio_cfgpin(EXYNOS4_GPD0(1), EXYNOS4_GPD_0_1_TOUT_1);	//gpio_free(EXYNOS4_GPD0(1));#endif	mdelay(5);	//LED_EN18	err = gpio_request(EXYNOS4_GPC1(1), "GPC1_1");	if (err) {		printk(KERN_ERR "failed to request GPC1_1 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC1(1), 1);	s3c_gpio_cfgpin(EXYNOS4_GPC1(1), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC1(1));	mdelay(5);#else	//VLED_ON#if 0	err = gpio_request(EXYNOS4_GPC0(1), "GPC0_1");	if (err) {		printk(KERN_ERR "failed to request GPC0_1 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC0(1), 1);	s3c_gpio_cfgpin(EXYNOS4_GPC0(1), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC0(1));	printk("(%s, %d): VLED_ON/n", __FUNCTION__, __LINE__);#endif		//mdelay(5);        	mdelay(250);	//PWM	err = gpio_request(EXYNOS4_GPD0(1), "GPD0_1");	if (err) {		printk(KERN_ERR "failed to request GPD0 for "			"lcd backlight control/n");		//return err;	}#if !defined(CONFIG_BACKLIGHT_PWM)	gpio_direction_output(EXYNOS4_GPD0(1), 1);	gpio_free(EXYNOS4_GPD0(1));#else/* modify by cym 20130417 for TSC2007 TouchScreen *///#ifdef CONFIG_TOUCHSCREEN_TSC2007//	gpio_direction_output(EXYNOS4_GPD0(1), 0);//#else	gpio_direction_output(EXYNOS4_GPD0(1), 0);//.........这里部分代码省略.........

		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* MHL_DSDA_1.8V */	{EXYNOS4_GPB(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* MHL_DSCL_1.8V */#endif#if defined(CONFIG_TARGET_TAB3_WIFI8)	{EXYNOS4_GPC1(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_DOWN, S5P_GPIO_DRVSTR_LV1}, /* NC */	{EXYNOS4_GPC1(4), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_DOWN, S5P_GPIO_DRVSTR_LV1}, /* NC */#else	{EXYNOS4_GPC1(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* GRIP_SDA */	{EXYNOS4_GPC1(4), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* GRIP_SCL */#endif	{EXYNOS4_GPD0(2), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1},	{EXYNOS4_GPD0(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1},	{EXYNOS4_GPD1(0), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1},	{EXYNOS4_GPD1(1), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1},	{EXYNOS4_GPD1(2), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* SENSOR_I2C_SDA */	{EXYNOS4_GPD1(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* SENSOR_I2C_SCL */#if defined(CONFIG_TARGET_TAB3_WIFI8) || defined(CONFIG_TARGET_TAB3_3G8) || /	defined(CONFIG_TARGET_TAB3_LTE8)

int s3cfb_backlight_off(struct platform_device *pdev){	gpio_request_one(EXYNOS4_GPD0(1), GPIOF_OUT_INIT_LOW, "GPD0");	gpio_free(EXYNOS4_GPD0(1));	return 0;}

int s3cfb_backlight_off(struct platform_device *pdev){	int err;	//err = gpio_request(EXYNOS4_GPD0(1), "GPD0");	//if (err) {	//	printk(KERN_ERR "failed to request GPD0 for "	//		"lcd backlight control/n");	//	return err;	//}	/* modify by cym 20121017 */#if 0	gpio_direction_output(EXYNOS4_GPD0(1), 0);	//gpio_free(EXYNOS4_GPD0(1));		//LED_EN18	err = gpio_request(EXYNOS4_GPC1(1), "GPC1_1");	if (err) {		printk(KERN_ERR "failed to request GPC1_1 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC1(1), 0);	s3c_gpio_cfgpin(EXYNOS4_GPC1(1), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC1(1));	//VLED_EN	err = gpio_request(EXYNOS4_GPC1(2), "GPC1_2");	if (err) {		printk(KERN_ERR "failed to request GPC1_2 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC1(2), 0);	s3c_gpio_cfgpin(EXYNOS4_GPC1(2), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC1(2));	//VLED_ON	err = gpio_request(EXYNOS4_GPC0(1), "GPC0_1");	if (err) {		printk(KERN_ERR "failed to request GPC0_1 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC0(1), 0);	s3c_gpio_cfgpin(EXYNOS4_GPC0(1), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC0(1));#else	//gpio_direction_output(EXYNOS4_GPD0(1), 0);	//gpio_free(EXYNOS4_GPD0(1));	//printk("(%s, %d): LCD_PWM_OFF/n", __FUNCTION__, __LINE__);#if 0		//TP1_EN	err = gpio_request(EXYNOS4_GPL0(2), "TP1_EN");	if (err) {		printk(KERN_ERR "failed to request TP1_EN for "			"I2C control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPL0(2), 0);	s3c_gpio_cfgpin(EXYNOS4_GPL0(2), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPL0(2));	mdelay(5);	printk("(%s, %d): TP1_EN_OFF/n", __FUNCTION__, __LINE__);#endif	//VLED_ON#if 0	err = gpio_request(EXYNOS4_GPC0(1), "GPC0_1");	if (err) {		printk(KERN_ERR "failed to request GPC0_1 for "			"lcd power control/n");		return err;	}	gpio_direction_output(EXYNOS4_GPC0(1), 0);	s3c_gpio_cfgpin(EXYNOS4_GPC0(1), S3C_GPIO_OUTPUT);	gpio_free(EXYNOS4_GPC0(1));	printk("(%s, %d): VLED_OFF/n", __FUNCTION__, __LINE__);#endif#endif	/* end modify */	/* add by cym 20150120 */#if 1        err = gpio_request(EXYNOS4_GPD0(1), "GPD0_1");        if (err) {                printk(KERN_ERR "failed to request GPD0 for "			"lcd backlight control/n");                //return err;        }        gpio_direction_output(EXYNOS4_GPD0(1), 0);        s3c_gpio_cfgpin(EXYNOS4_GPD0(1), S3C_GPIO_OUTPUT);        gpio_free(EXYNOS4_GPD0(1));//.........这里部分代码省略.........

struct gpio_init_data {	uint num;	uint cfg;	uint val;	uint pud;	uint drv;};static struct gpio_init_data u1_init_gpios[] = {	{EXYNOS4_GPC1(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* CODEC_SDA_1.8V */	{EXYNOS4_GPC1(4), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* CODEC_SCL_1.8V */	{EXYNOS4_GPD0(2), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* MHL_SDA_2.8V */	{EXYNOS4_GPD0(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* MHL_SCL_2.8V */	{EXYNOS4_GPD1(0), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* 8M_CAM_SDA_2.8V */	{EXYNOS4_GPD1(1), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* 8M_CAM_SCL_2.8V */	{EXYNOS4_GPD1(2), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* SENSE_SDA_2.8V */	{EXYNOS4_GPD1(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* SENSE_SCL_2.8V */	{EXYNOS4_GPK3(1), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* WLAN_SDIO_CMD */

		},	}, {		.base   = (S5P_VA_GPIO1 + 0x80),		.eint_offset = 0x10,		.group	= 4,		.chip	= {			.base	= EXYNOS4_GPC1(0),			.ngpio	= EXYNOS4_GPIO_C1_NR,			.label	= "GPC1",		},	}, {		.base   = (S5P_VA_GPIO1 + 0xA0),		.eint_offset = 0x14,		.group	= 5,		.chip	= {			.base	= EXYNOS4_GPD0(0),			.ngpio	= EXYNOS4_GPIO_D0_NR,			.label	= "GPD0",		},	}, {		.base   = (S5P_VA_GPIO1 + 0xC0),		.eint_offset = 0x18,		.group	= 6,		.chip	= {			.base	= EXYNOS4_GPD1(0),			.ngpio	= EXYNOS4_GPIO_D1_NR,			.label	= "GPD1",		},	}, {		.base   = (S5P_VA_GPIO1 + 0x180),		.eint_offset = 0x30,

	uint pud;	uint drv;};extern int s3c_gpio_slp_cfgpin(unsigned int pin, unsigned int config);extern int s3c_gpio_slp_setpull_updown(unsigned int pin, unsigned int config);/* * baffin GPIO Init Table */static struct gpio_init_data baffin_init_gpios[] = {	{EXYNOS4_GPA1(4), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_DOWN, S5P_GPIO_DRVSTR_LV1}, /* NC */	{EXYNOS4_GPA1(5), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_DOWN, S5P_GPIO_DRVSTR_LV1}, /* NC */	{EXYNOS4_GPD0(2), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1},	{EXYNOS4_GPD0(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1},	{EXYNOS4_GPD1(0), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* NFC_SDA_1.8V */	{EXYNOS4_GPD1(1), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* NFC_SCL_1.8V */	{EXYNOS4_GPD1(2), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* GSENSE_SDA_1.8V */	{EXYNOS4_GPD1(3), S3C_GPIO_INPUT, S3C_GPIO_SETPIN_NONE,		S3C_GPIO_PULL_NONE, S5P_GPIO_DRVSTR_LV1}, /* GSENSE_SCL_1.8V */#if defined(CONFIG_MACH_BAFFIN_KOR_LGT)