summaryrefslogtreecommitdiff
path: root/drivers/media/video/ivtv/ivtv-firmware.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-firmware.c')
-rw-r--r--drivers/media/video/ivtv/ivtv-firmware.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/drivers/media/video/ivtv/ivtv-firmware.c b/drivers/media/video/ivtv/ivtv-firmware.c
index a71e8ba306b0..d8bf2b01729d 100644
--- a/drivers/media/video/ivtv/ivtv-firmware.c
+++ b/drivers/media/video/ivtv/ivtv-firmware.c
@@ -23,7 +23,10 @@
#include "ivtv-mailbox.h"
#include "ivtv-firmware.h"
#include "ivtv-yuv.h"
+#include "ivtv-ioctl.h"
+#include "ivtv-cards.h"
#include <linux/firmware.h>
+#include <media/saa7127.h>
#define IVTV_MASK_SPU_ENABLE 0xFFFFFFFE
#define IVTV_MASK_VPU_ENABLE15 0xFFFFFFF6
@@ -271,3 +274,122 @@ void ivtv_init_mpeg_decoder(struct ivtv *itv)
}
ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 4, 0, 0, 0, 1);
}
+
+/* Try to restart the card & restore previous settings */
+int ivtv_firmware_restart(struct ivtv *itv)
+{
+ int rc = 0;
+ v4l2_std_id std;
+ struct ivtv_open_id fh;
+ fh.itv = itv;
+
+ if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
+ /* Display test image during restart */
+ ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_routing,
+ SAA7127_INPUT_TYPE_TEST_IMAGE,
+ itv->card->video_outputs[itv->active_output].video_output,
+ 0);
+
+ mutex_lock(&itv->udma.lock);
+
+ rc = ivtv_firmware_init(itv);
+ if (rc) {
+ mutex_unlock(&itv->udma.lock);
+ return rc;
+ }
+
+ /* Allow settings to reload */
+ ivtv_mailbox_cache_invalidate(itv);
+
+ /* Restore video standard */
+ std = itv->std;
+ itv->std = 0;
+ ivtv_s_std(NULL, &fh, &std);
+
+ if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
+ ivtv_init_mpeg_decoder(itv);
+
+ /* Restore framebuffer if active */
+ if (itv->ivtvfb_restore)
+ itv->ivtvfb_restore(itv);
+
+ /* Restore alpha settings */
+ ivtv_set_osd_alpha(itv);
+
+ /* Restore normal output */
+ ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_routing,
+ SAA7127_INPUT_TYPE_NORMAL,
+ itv->card->video_outputs[itv->active_output].video_output,
+ 0);
+ }
+
+ mutex_unlock(&itv->udma.lock);
+ return rc;
+}
+
+/* Check firmware running state. The checks fall through
+ allowing multiple failures to be logged. */
+int ivtv_firmware_check(struct ivtv *itv, char *where)
+{
+ int res = 0;
+
+ /* Check encoder is still running */
+ if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0) < 0) {
+ IVTV_WARN("Encoder has died : %s\n", where);
+ res = -1;
+ }
+
+ /* Also check audio. Only check if not in use & encoder is okay */
+ if (!res && !atomic_read(&itv->capturing) &&
+ (!atomic_read(&itv->decoding) ||
+ (atomic_read(&itv->decoding) < 2 && test_bit(IVTV_F_I_DEC_YUV,
+ &itv->i_flags)))) {
+
+ if (ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12) < 0) {
+ IVTV_WARN("Audio has died (Encoder OK) : %s\n", where);
+ res = -2;
+ }
+ }
+
+ if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
+ /* Second audio check. Skip if audio already failed */
+ if (res != -2 && read_dec(0x100) != read_dec(0x104)) {
+ /* Wait & try again to be certain. */
+ ivtv_msleep_timeout(14, 0);
+ if (read_dec(0x100) != read_dec(0x104)) {
+ IVTV_WARN("Audio has died (Decoder) : %s\n",
+ where);
+ res = -1;
+ }
+ }
+
+ /* Check decoder is still running */
+ if (ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0) < 0) {
+ IVTV_WARN("Decoder has died : %s\n", where);
+ res = -1;
+ }
+ }
+
+ /* If something failed & currently idle, try to reload */
+ if (res && !atomic_read(&itv->capturing) &&
+ !atomic_read(&itv->decoding)) {
+ IVTV_INFO("Detected in %s that firmware had failed - "
+ "Reloading\n", where);
+ res = ivtv_firmware_restart(itv);
+ /*
+ * Even if restarted ok, still signal a problem had occured.
+ * The caller can come through this function again to check
+ * if things are really ok after the restart.
+ */
+ if (!res) {
+ IVTV_INFO("Firmware restart okay\n");
+ res = -EAGAIN;
+ } else {
+ IVTV_INFO("Firmware restart failed\n");
+ }
+ } else if (res) {
+ res = -EIO;
+ }
+
+ return res;
+}