The patch number 10167 was added via Michael Krufky <[email protected]>
to http://linuxtv.org/hg/v4l-dvb master development tree.
Kernel patches in this development tree may be modified to be backward
compatible with older kernels. Compatibility modifications will be
removed before inclusion into the mainstream Kernel
If anyone has any objections, please let us know by sending a message to:
[email protected]
------
From: Michael Krufky <[email protected]>
sms1xxx: add support for inverted gpio
negative gpio values signify inverted polarity
Priority: normal
Signed-off-by: Michael Krufky <[email protected]>
---
linux/drivers/media/dvb/siano/sms-cards.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff -r 494b3fb0d443 -r 621c0db605f3 linux/drivers/media/dvb/siano/sms-cards.c
--- a/linux/drivers/media/dvb/siano/sms-cards.c Mon Nov 24 08:35:23 2008 -0200
+++ b/linux/drivers/media/dvb/siano/sms-cards.c Thu Nov 27 23:02:56 2008 -0500
@@ -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)
-{
- int ret;
+static int sms_set_gpio(struct smscore_device_t *coredev, int pin, int enable)
+{
+ 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_d
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)
---
Patch is available at:
http://linuxtv.org/hg/v4l-dvb/rev/621c0db605f3f6775b71ee8263637be57ee96567
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