C++ s3c2410_gpio_setpin函数代码示例

void gpio_wifi_reset(void)
{
	unsigned int pin;

	pin = S3C2410_GPF6;

	mdelay(1);
	s3c2410_gpio_setpin(pin, 0);
	mdelay(10);
	s3c2410_gpio_setpin(pin, 1);
	mdelay(1);
}

/*
 * Blue led.
 * (it can only be blue flashing led)
 */
static void h1940_blueled_set(struct led_classdev *led_dev,
			      enum led_brightness value)
{
	if (value) {
		/* flashing Blue */
		h1940_latch_control(0, H1940_LATCH_LED_FLASH);
		s3c2410_gpio_setpin(S3C2410_GPA3, 1);
	} else {
		h1940_latch_control(H1940_LATCH_LED_FLASH, 0);
		s3c2410_gpio_setpin(S3C2410_GPA3, 0);
	}

}

static void gsm_on_off(struct device *dev, int on)
{
	if (!on) {
		s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPIO_INPUT);
		s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPIO_INPUT);

		pcf50633_gpio_set(gta02_pcf, PCF50633_GPIO2, 0);

		if (gta02_gsm.con) {
			s3c24xx_serial_console_set_silence(0);
			console_start(gta02_gsm.con);

			dev_dbg(dev, "powered down gta02 GSM, enabling "
					"serial console\n");
		}

		return;
	}

	if (gta02_gsm.con) {
		dev_dbg(dev, "powering up GSM, thus "
				"disconnecting serial console\n");

		console_stop(gta02_gsm.con);
		s3c24xx_serial_console_set_silence(1);
	}

	/* allow UART to talk to GSM side now we will power it */
	s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0);
	s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPH2_TXD0);

	pcf50633_gpio_set(gta02_pcf, PCF50633_GPIO2, 7);

	msleep(100);

	s3c2410_gpio_setpin(GTA02_GPIO_MODEM_ON, 1);
	msleep(500);
	s3c2410_gpio_setpin(GTA02_GPIO_MODEM_ON, 0);

	/*
	 * workaround for calypso firmware moko10 and earlier,
	 * without this it will leave IRQ line high after
	 * booting
	 */
	s3c2410_gpio_setpin(S3C2410_GPH1, 1);
	s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_OUTP);
	msleep(1000);
	s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0);

}

static void __init nexcoder_sensorboard_init(void)
{
	// Initialize SCCB bus
	s3c2410_gpio_setpin(S3C2410_GPE14, 1); // IICSCL
	s3c2410_gpio_cfgpin(S3C2410_GPE14, S3C2410_GPE14_OUTP);
	s3c2410_gpio_setpin(S3C2410_GPE15, 1); // IICSDA
	s3c2410_gpio_cfgpin(S3C2410_GPE15, S3C2410_GPE15_OUTP);

	// Power up the sensor board
	s3c2410_gpio_setpin(S3C2410_GPF1, 1);
	s3c2410_gpio_cfgpin(S3C2410_GPF1, S3C2410_GPF1_OUTP); // CAM_GPIO7 => nLDO_PWRDN
	s3c2410_gpio_setpin(S3C2410_GPF2, 0);
	s3c2410_gpio_cfgpin(S3C2410_GPF2, S3C2410_GPF2_OUTP); // CAM_GPIO6 => CAM_PWRDN
}

static void __init nexcoder_sensorboard_init(void)
{
	// Initialize SCCB bus
	s3c2410_gpio_setpin(S3C2410_GPE(14), 1); // IICSCL
	s3c_gpio_cfgpin(S3C2410_GPE(14), S3C2410_GPIO_OUTPUT);
	s3c2410_gpio_setpin(S3C2410_GPE(15), 1); // IICSDA
	s3c_gpio_cfgpin(S3C2410_GPE(15), S3C2410_GPIO_OUTPUT);

	// Power up the sensor board
	s3c2410_gpio_setpin(S3C2410_GPF(1), 1);
	s3c_gpio_cfgpin(S3C2410_GPF(1), S3C2410_GPIO_OUTPUT); // CAM_GPIO7 => nLDO_PWRDN
	s3c2410_gpio_setpin(S3C2410_GPF(2), 0);
	s3c_gpio_cfgpin(S3C2410_GPF(2), S3C2410_GPIO_OUTPUT); // CAM_GPIO6 => CAM_PWRDN
}

static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	int val = ucontrol->value.integer.value[0];

	if (val) {
		lm4853_state |= LM4853_SPK;
		s3c2410_gpio_setpin(GTA02_GPIO_HP_IN, 0);
	} else {
		lm4853_state &= ~LM4853_SPK;
		s3c2410_gpio_setpin(GTA02_GPIO_HP_IN, 1);
	}

	return 0;
}

static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
{
	switch (cmd) {
	case S3C2410_UDC_P_ENABLE :
		s3c2410_gpio_setpin(S3C2410_GPB3, 1);
		break;
	case S3C2410_UDC_P_DISABLE :
		s3c2410_gpio_setpin(S3C2410_GPB3, 0);
		break;
	case S3C2410_UDC_P_RESET :
		break;
	default:
		break;
	}
}

static ssize_t gsm_write(struct device *dev, struct device_attribute *attr,
			 const char *buf, size_t count)
{
	unsigned long on = simple_strtoul(buf, NULL, 10);

	if (!strcmp(attr->attr.name, "power_on")) {
		gsm_on_off(dev, on);

		return count;
	}

	if (!strcmp(attr->attr.name, "download")) {
		/*
		 * the keyboard / buttons driver requests and enables
		 * the JACK_INSERT IRQ.  We have to take care about
		 * not enabling and disabling the IRQ when it was
		 * already in that state or we get "unblanaced IRQ"
		 * kernel warnings and stack dumps.  So we use the
		 * copy of the ndl_gsm state to figure out if we should
		 * enable or disable the jack interrupt
		 */
		if (on) {
			if (gta02_gsm.gpio_ndl_gsm)
				disable_irq(gpio_to_irq(
						   GTA02_GPIO_JACK_INSERT));
		} else {
			if (!gta02_gsm.gpio_ndl_gsm)
				enable_irq(gpio_to_irq(
						   GTA02_GPIO_JACK_INSERT));
		}

		gta02_gsm.gpio_ndl_gsm = !on;
		s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, !on);

		return count;
	}

	if (!strcmp(attr->attr.name, "flowcontrolled")) {
		if (on) {
			gta_gsm_interrupts = 0;
			s3c2410_gpio_setpin(S3C2410_GPH1, 1);
			s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_OUTP);
		} else
			s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0);
	}

	return count;
}

void __init smdk_machine_init(void)
{
#ifndef CONFIG_MACH_CANOPUS
	/* Configure the LEDs (even if we have no LED support)*/

	s3c2410_gpio_cfgpin(S3C2410_GPF4, S3C2410_GPF4_OUTP);
	s3c2410_gpio_cfgpin(S3C2410_GPF5, S3C2410_GPF5_OUTP);
	s3c2410_gpio_cfgpin(S3C2410_GPF6, S3C2410_GPF6_OUTP);
	s3c2410_gpio_cfgpin(S3C2410_GPF7, S3C2410_GPF7_OUTP);

	s3c2410_gpio_setpin(S3C2410_GPF4, 1);
	s3c2410_gpio_setpin(S3C2410_GPF5, 1);
	s3c2410_gpio_setpin(S3C2410_GPF6, 1);
	s3c2410_gpio_setpin(S3C2410_GPF7, 1);

	s3c_device_nand.dev.platform_data = &smdk_nand_info;
#else
	canopus_gpio_init();
	q_s3c2416_init_clocks();

	if (q_hw_ver(SWP2000)
			|| q_hw_ver(7800_MP2)) {
		q_clock_init(0, 48000000); /* for USB */
	} else if (q_hw_ver(KTQOOK_TP2)
			|| q_hw_ver(KTQOOK_MP)
			|| q_hw_ver(SKATM)) {
		q_clock_init(1, 48000000); /* for USB */
	}

	if (q_hw_ver(SKATM)) {
		q_clock_init(0, 12000000); /* for SmartCard reader */
	}
#endif	// CONFIG_MACH_CANOPUS
	
	//For s3c nand partition
	s3c_device_nand.dev.platform_data = &nand_mtd_info;

	platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs));

	if (q_hw_ver(KTQOOK))
		platform_add_devices(kt_devs, ARRAY_SIZE(kt_devs));

	s3c2410_pm_init();

#ifdef CONFIG_MACH_CANOPUS
	q_param_proc_init();
#endif
}

static void __init osiris_map_io(void)
{
	unsigned long flags;

	/* initialise the clocks */

	s3c24xx_dclk0.parent = NULL;
	s3c24xx_dclk0.rate   = 12*1000*1000;

	s3c24xx_dclk1.parent = NULL;
	s3c24xx_dclk1.rate   = 24*1000*1000;

	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;
	s3c24xx_clkout1.parent  = &s3c24xx_dclk1;

	s3c24xx_uclk.parent  = &s3c24xx_clkout1;

	s3c24xx_register_clocks(osiris_clocks, ARRAY_SIZE(osiris_clocks));

	s3c_device_nand.dev.platform_data = &osiris_nand_info;

	s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
	s3c24xx_init_clocks(0);
	s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));

	/* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */

	local_irq_save(flags);
	__raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
	local_irq_restore(flags);

	/* write-protect line to the NAND */
	s3c2410_gpio_setpin(S3C2410_GPA0, 1);
}

static void jive_power_off(void)
{
	printk(KERN_INFO "powering system down...\n");

	s3c2410_gpio_setpin(S3C2410_GPC(5), 1);
	s3c_gpio_cfgpin(S3C2410_GPC(5), S3C2410_GPIO_OUTPUT);
}

static void jive_lcm_reset(unsigned int set)
{
	printk(KERN_DEBUG "%s(%d)\n", __func__, set);

	s3c2410_gpio_setpin(S3C2410_GPG13, set);
	s3c2410_gpio_cfgpin(S3C2410_GPG13, S3C2410_GPIO_OUTPUT);
}

/*
 * 	udc_disable - disable USB device controller
 */
static void udc_disable(struct s3c_udc *dev)
{
	DEBUG_SETUP("%s: %p\n", __FUNCTION__, dev);

	udc_set_address(dev, 0);

	dev->ep0state = WAIT_FOR_SETUP;
	dev->gadget.speed = USB_SPEED_UNKNOWN;
	dev->usb_address = 0;

	/* usb power disable */
#if defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
	s3c2410_gpio_pullup(S3C2443_GPH14, 1); /* pull-down enable */
	s3c2410_gpio_pullup(S3C2410_GPF2, 1);  /* pull-down enable */
#else
	s3c2410_gpio_pullup(S3C2443_GPH14, 2); /* pull-down enable */
#endif
	s3c2410_gpio_cfgpin(S3C2443_GPH14, S3C2443_GPH14_OUTP);
	s3c2410_gpio_setpin(S3C2443_GPH14, 0);

	/* usb clock disable */
	__raw_writel(0, S3C_UCLKCON);

	/* USB Port is Suspend mode */
	__raw_writel(__raw_readl(S3C2410_MISCCR)|(1<<12), S3C2410_MISCCR);

	/* PHY power disable */
	__raw_writel(__raw_readl(S3C_PWRCFG)&~(1<<4), S3C_PWRCFG);

}

/*
 * HS-MMC GPIO Set function for S3C2443 SMDK board
 */
void hsmmc_set_gpio (uint channel, uint width)
{
	/* GPIO L */
	s3c2410_gpio_cfgpin(S3C2443_GPL0, S3C2443_GPL0_SD0DAT0);
	s3c2410_gpio_cfgpin(S3C2443_GPL1, S3C2443_GPL1_SD0DAT1);

	s3c2410_gpio_cfgpin(S3C2443_GPL2, S3C2443_GPL2_SD0DAT2);
	s3c2410_gpio_cfgpin(S3C2443_GPL3, S3C2443_GPL3_SD0DAT3);

	s3c2410_gpio_cfgpin(S3C2443_GPL4, S3C2443_GPL4_SD0DAT4);
	s3c2410_gpio_cfgpin(S3C2443_GPL5, S3C2443_GPL5_SD0DAT5);

	s3c2410_gpio_cfgpin(S3C2443_GPL6, S3C2443_GPL6_SD0DAT6);
	s3c2410_gpio_cfgpin(S3C2443_GPL7, S3C2443_GPL7_SD0DAT7);

	s3c2410_gpio_cfgpin(S3C2443_GPL8, S3C2443_GPL8_SD0CMD);
	s3c2410_gpio_cfgpin(S3C2443_GPL9, S3C2443_GPL9_SD0CLK);

	/* GPIO J */
	s3c2410_gpio_cfgpin(S3C2443_GPJ13, S3C2443_GPJ13_SD0LED);
	s3c2410_gpio_cfgpin(S3C2443_GPJ14, S3C2443_GPJ14_nSD0CD);
#if 0
	s3c2410_gpio_cfgpin(S3C2443_GPJ15, S3C2443_GPJ15_OUTP);
#endif
	s3c2410_gpio_cfgpin(S3C2443_GPJ15, S3C2443_GPJ15_nSD0WP); /* write protect enable */


	s3c2410_gpio_setpin(S3C2443_GPJ15, 1);
}

static int __init gta02_gsm_probe(struct platform_device *pdev)
{
	switch (S3C_SYSTEM_REV_ATAG) {
	case GTA02v1_SYSTEM_REV:
	case GTA02v2_SYSTEM_REV:
	case GTA02v3_SYSTEM_REV:
	case GTA02v4_SYSTEM_REV:
	case GTA02v5_SYSTEM_REV:
	case GTA02v6_SYSTEM_REV:
		break;
	default:
		dev_warn(&pdev->dev, "Unknown Freerunner Revision 0x%x, "
			 "some PM features not available!!!\n",
			 system_rev);
		break;
	}

	gta02_gsm.con = find_s3c24xx_console();
	if (!gta02_gsm.con)
		dev_warn(&pdev->dev,
			 "cannot find S3C24xx console driver\n");

	/* note that download initially disabled, and enforce that */
	gta02_gsm.gpio_ndl_gsm = 1;
	s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1);

	/* GSM is to be initially off (at boot, or if this module inserted) */
	gsm_on_off(&pdev->dev, 0);

	return sysfs_create_group(&pdev->dev.kobj, &gta02_gsm_attr_group);
}