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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 21:15:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 21:15:42 -0700
commit0dd5198672dd2bbeb933862e1fc82162e0b636be (patch)
treec9efed20d90603c4d1626c21bd7aab1e7fc74a58 /arch/arm
parentc868d550115b9ccc0027c67265b9520790f05601 (diff)
parent11c635a25b9f3a5d87409ce46cf2e05c500251ec (diff)
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (425 commits) V4L/DVB (11870): gspca - main: VIDIOC_ENUM_FRAMESIZES ioctl added. V4L/DVB (12004): poll method lose race condition V4L/DVB (11894): flexcop-pci: dmesg visible names broken V4L/DVB (11892): Siano: smsendian - declare function as extern V4L/DVB (11891): Siano: smscore - bind the GPIO SMS protocol V4L/DVB (11890): Siano: smscore - remove redundant code V4L/DVB (11889): Siano: smsdvb - add DVB v3 events V4L/DVB (11888): Siano: smsusb - remove redundant ifdef V4L/DVB (11887): Siano: smscards - add board (target) events V4L/DVB (11886): Siano: smscore - fix some new GPIO definitions names V4L/DVB (11885): Siano: Add new GPIO management interface V4L/DVB (11884): Siano: smssdio - revert to stand alone module V4L/DVB (11883): Siano: cards - add two additional (USB) devices V4L/DVB (11824): Siano: smsusb - change exit func debug msg V4L/DVB (11823): Siano: smsusb - fix typo in module description V4L/DVB (11822): Siano: smscore - bug fix at get_device_mode V4L/DVB (11821): Siano: smscore - fix isdb-t firmware name V4L/DVB (11820): Siano: smscore - fix byte ordering bug V4L/DVB (11819): Siano: smscore - fix get_common_buffer bug V4L/DVB (11818): Siano: smscards - assign gpio to HPG targets ...
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-pxa/pcm990-baseboard.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/arch/arm/mach-pxa/pcm990-baseboard.c b/arch/arm/mach-pxa/pcm990-baseboard.c
index 095521e9ee2..01791d74e08 100644
--- a/arch/arm/mach-pxa/pcm990-baseboard.c
+++ b/arch/arm/mach-pxa/pcm990-baseboard.c
@@ -380,12 +380,12 @@ static struct pca953x_platform_data pca9536_data = {
.gpio_base = NR_BUILTIN_GPIO,
};
-static int gpio_bus_switch;
+static int gpio_bus_switch = -EINVAL;
static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
- unsigned long flags)
+ unsigned long flags)
{
- if (gpio_bus_switch <= 0) {
+ if (gpio_bus_switch < 0) {
if (flags == SOCAM_DATAWIDTH_10)
return 0;
else
@@ -404,25 +404,34 @@ static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
{
int ret;
- if (!gpio_bus_switch) {
+ if (gpio_bus_switch < 0) {
ret = gpio_request(NR_BUILTIN_GPIO, "camera");
if (!ret) {
gpio_bus_switch = NR_BUILTIN_GPIO;
gpio_direction_output(gpio_bus_switch, 0);
- } else
- gpio_bus_switch = -EINVAL;
+ }
}
- if (gpio_bus_switch > 0)
+ if (gpio_bus_switch >= 0)
return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
else
return SOCAM_DATAWIDTH_10;
}
+static void pcm990_camera_free_bus(struct soc_camera_link *link)
+{
+ if (gpio_bus_switch < 0)
+ return;
+
+ gpio_free(gpio_bus_switch);
+ gpio_bus_switch = -EINVAL;
+}
+
static struct soc_camera_link iclink = {
.bus_id = 0, /* Must match with the camera ID above */
.query_bus_param = pcm990_camera_query_bus_param,
.set_bus_param = pcm990_camera_set_bus_param,
+ .free_bus = pcm990_camera_free_bus,
};
/* Board I2C devices. */