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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/media/pci/cx18/cx18-controls.c
Initial import
Diffstat (limited to 'drivers/media/pci/cx18/cx18-controls.c')
-rw-r--r--drivers/media/pci/cx18/cx18-controls.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/media/pci/cx18/cx18-controls.c b/drivers/media/pci/cx18/cx18-controls.c
new file mode 100644
index 000000000..4aeb7c6b8
--- /dev/null
+++ b/drivers/media/pci/cx18/cx18-controls.c
@@ -0,0 +1,131 @@
+/*
+ * cx18 ioctl control functions
+ *
+ * Derived from ivtv-controls.c
+ *
+ * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include "cx18-driver.h"
+#include "cx18-cards.h"
+#include "cx18-ioctl.h"
+#include "cx18-audio.h"
+#include "cx18-mailbox.h"
+#include "cx18-controls.h"
+
+static int cx18_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
+{
+ struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
+ int type = cxhdl->stream_type->val;
+
+ if (atomic_read(&cx->ana_capturing) > 0)
+ return -EBUSY;
+
+ if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV ||
+ !(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS ||
+ type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD ||
+ type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) {
+ /* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */
+ cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
+ CX18_DEBUG_INFO("disabled insertion of sliced VBI data into "
+ "the MPEG stream\n");
+ return 0;
+ }
+
+ /* Allocate sliced VBI buffers if needed. */
+ if (cx->vbi.sliced_mpeg_data[0] == NULL) {
+ int i;
+
+ for (i = 0; i < CX18_VBI_FRAMES; i++) {
+ cx->vbi.sliced_mpeg_data[i] =
+ kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
+ if (cx->vbi.sliced_mpeg_data[i] == NULL) {
+ while (--i >= 0) {
+ kfree(cx->vbi.sliced_mpeg_data[i]);
+ cx->vbi.sliced_mpeg_data[i] = NULL;
+ }
+ cx->vbi.insert_mpeg =
+ V4L2_MPEG_STREAM_VBI_FMT_NONE;
+ CX18_WARN("Unable to allocate buffers for "
+ "sliced VBI data insertion\n");
+ return -ENOMEM;
+ }
+ }
+ }
+
+ cx->vbi.insert_mpeg = fmt;
+ CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,"
+ "when sliced VBI is enabled\n");
+
+ /*
+ * If our current settings have no lines set for capture, store a valid,
+ * default set of service lines to capture, in our current settings.
+ */
+ if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
+ if (cx->is_60hz)
+ cx->vbi.sliced_in->service_set =
+ V4L2_SLICED_CAPTION_525;
+ else
+ cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
+ cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
+ }
+ return 0;
+}
+
+static int cx18_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
+{
+ struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
+ int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
+ struct v4l2_mbus_framefmt fmt;
+
+ /* fix videodecoder resolution */
+ fmt.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
+ fmt.height = cxhdl->height;
+ fmt.code = MEDIA_BUS_FMT_FIXED;
+ v4l2_subdev_call(cx->sd_av, video, s_mbus_fmt, &fmt);
+ return 0;
+}
+
+static int cx18_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
+{
+ static const u32 freqs[3] = { 44100, 48000, 32000 };
+ struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
+
+ /* The audio clock of the digitizer must match the codec sample
+ rate otherwise you get some very strange effects. */
+ if (idx < ARRAY_SIZE(freqs))
+ cx18_call_all(cx, audio, s_clock_freq, freqs[idx]);
+ return 0;
+}
+
+static int cx18_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
+{
+ struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
+
+ cx->dualwatch_stereo_mode = val;
+ return 0;
+}
+
+struct cx2341x_handler_ops cx18_cxhdl_ops = {
+ .s_audio_mode = cx18_s_audio_mode,
+ .s_audio_sampling_freq = cx18_s_audio_sampling_freq,
+ .s_video_encoding = cx18_s_video_encoding,
+ .s_stream_vbi_fmt = cx18_s_stream_vbi_fmt,
+};