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| author | Michael Krufky <mkrufky@linuxtv.org> | 2008-11-27 23:02:56 -0500 |
|---|---|---|
| committer | Michael Krufky <mkrufky@linuxtv.org> | 2008-11-27 23:02:56 -0500 |
| commit | 1bdf13c6e1a9e64fb3074d35ed38f92b737088e1 (patch) | |
| tree | a73b06a61db74856be9c202984a19406eba2027c | |
| parent | 18efb709ad3602aebb032ef3f23aba5d45a44d38 (diff) | |
| download | mediapointer-dvb-s2-1bdf13c6e1a9e64fb3074d35ed38f92b737088e1.tar.gz mediapointer-dvb-s2-1bdf13c6e1a9e64fb3074d35ed38f92b737088e1.tar.bz2 | |
sms1xxx: add support for inverted gpio
From: Michael Krufky <mkrufky@linuxtv.org>
negative gpio values signify inverted polarity
Priority: normal
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
| -rw-r--r-- | linux/drivers/media/dvb/siano/sms-cards.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/linux/drivers/media/dvb/siano/sms-cards.c b/linux/drivers/media/dvb/siano/sms-cards.c index fd62e0b85..5a9882ffe 100644 --- a/linux/drivers/media/dvb/siano/sms-cards.c +++ b/linux/drivers/media/dvb/siano/sms-cards.c @@ -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) |