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Commit dd72f31b authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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V4L/DVB (10167): sms1xxx: add support for inverted gpio 



negative gpio values signify inverted polarity

Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e4cda3e0

drivers/media/dvb/siano/sms-cards.c

+13 −4
Original line number Diff line number Diff line
@@ -131,9 +131,10 @@ struct sms_board *sms_get_board(int id) 
	return &sms_boards[id];

}



static int sms_set_gpio(struct smscore_device_t *coredev, u32 pin, int enable)

static int sms_set_gpio(struct smscore_device_t *coredev, int pin, int enable)

{

	int ret;

	int lvl, ret;

	u32 gpio;

	struct smscore_gpio_config gpioconfig = {

		.direction            = SMS_GPIO_DIRECTION_OUTPUT,

		.pullupdown           = SMS_GPIO_PULLUPDOWN_NONE,
@@ -145,12 +146,20 @@ static int sms_set_gpio(struct smscore_device_t *coredev, u32 pin, int enable) 
	if (pin == 0)

		return -EINVAL;



	ret = smscore_configure_gpio(coredev, pin, &gpioconfig);

	if (pin < 0) {

		/* inverted gpio */

		gpio = pin * -1;

		lvl = enable ? 0 : 1;

	} else {

		gpio = pin;

		lvl = enable ? 1 : 0;

	}



	ret = smscore_configure_gpio(coredev, gpio, &gpioconfig);

	if (ret < 0)

		return ret;



	return smscore_set_gpio(coredev, pin, enable);

	return smscore_set_gpio(coredev, gpio, lvl);

}



int sms_board_setup(struct smscore_device_t *coredev)