C++ (Cpp) mc33880_write_config примеры использования

Пример #1

Файл: gpio-mc33880.c Проект: DirtyDroidX/android_kernel_htc_m8ul

static int __devinit mc33880_probe(struct spi_device *spi)
{
	struct mc33880 *mc;
	struct mc33880_platform_data *pdata;
	int ret;

	pdata = spi->dev.platform_data;
	if (!pdata || !pdata->base) {
		dev_dbg(&spi->dev, "incorrect or missing platform data\n");
		return -EINVAL;
	}

	spi->bits_per_word = 8;

	ret = spi_setup(spi);
	if (ret < 0)
		return ret;

	mc = kzalloc(sizeof(struct mc33880), GFP_KERNEL);
	if (!mc)
		return -ENOMEM;

	mutex_init(&mc->lock);

	dev_set_drvdata(&spi->dev, mc);

	mc->spi = spi;

	mc->chip.label = DRIVER_NAME,
	mc->chip.set = mc33880_set;
	mc->chip.base = pdata->base;
	mc->chip.ngpio = PIN_NUMBER;
	mc->chip.can_sleep = 1;
	mc->chip.dev = &spi->dev;
	mc->chip.owner = THIS_MODULE;

	mc->port_config = 0x00;
	ret = mc33880_write_config(mc);
	mc->port_config = 0x00;
	if (!ret)
		ret = mc33880_write_config(mc);

	if (ret) {
		printk(KERN_ERR "Failed writing to " DRIVER_NAME ": %d\n", ret);
		goto exit_destroy;
	}

	ret = gpiochip_add(&mc->chip);
	if (ret)
		goto exit_destroy;

	return ret;

exit_destroy:
	dev_set_drvdata(&spi->dev, NULL);
	mutex_destroy(&mc->lock);
	kfree(mc);
	return ret;
}

Пример #2

Файл: gpio-mc33880.c Проект: adis1313/android_kernel_samsung_msm8974

static int __mc33880_set(struct mc33880 *mc, unsigned offset, int value)
{
	if (value)
		mc->port_config |= 1 << offset;
	else
		mc->port_config &= ~(1 << offset);

	return mc33880_write_config(mc);
}

Пример #3

Файл: gpio-mc33880.c Проект: rrowicki/Chrono_Kernel-1

static int __devinit mc33880_probe(struct spi_device *spi)
{
	struct mc33880 *mc;
	struct mc33880_platform_data *pdata;
	int ret;

	pdata = spi->dev.platform_data;
	if (!pdata || !pdata->base) {
		dev_dbg(&spi->dev, "incorrect or missing platform data\n");
		return -EINVAL;
	}

	/*
	 * bits_per_word cannot be configured in platform data
	 */
	spi->bits_per_word = 8;

	ret = spi_setup(spi);
	if (ret < 0)
		return ret;

	mc = kzalloc(sizeof(struct mc33880), GFP_KERNEL);
	if (!mc)
		return -ENOMEM;

	mutex_init(&mc->lock);

	dev_set_drvdata(&spi->dev, mc);

	mc->spi = spi;

	mc->chip.label = DRIVER_NAME,
	mc->chip.set = mc33880_set;
	mc->chip.base = pdata->base;
	mc->chip.ngpio = PIN_NUMBER;
	mc->chip.can_sleep = 1;
	mc->chip.dev = &spi->dev;
	mc->chip.owner = THIS_MODULE;

	mc->port_config = 0x00;
	/* write twice, because during initialisation the first setting
	 * is just for testing SPI communication, and the second is the
	 * "real" configuration
	 */
	ret = mc33880_write_config(mc);
	mc->port_config = 0x00;
	if (!ret)
		ret = mc33880_write_config(mc);

	if (ret) {
;
		goto exit_destroy;
	}

	ret = gpiochip_add(&mc->chip);
	if (ret)
		goto exit_destroy;

	return ret;

exit_destroy:
	dev_set_drvdata(&spi->dev, NULL);
	mutex_destroy(&mc->lock);
	kfree(mc);
	return ret;
}