ivtv-controls.c

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3    ioctl control functions
  4    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
  5    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@kernel.org>
  6
  7 */
  8
  9#include "ivtv-driver.h"
 10#include "ivtv-ioctl.h"
 11#include "ivtv-controls.h"
 12#include "ivtv-mailbox.h"
 13
 14static int ivtv_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
 15{
 16	struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
 17
 18	/* First try to allocate sliced VBI buffers if needed. */
 19	if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
 20		int i;
 21
 22		for (i = 0; i < IVTV_VBI_FRAMES; i++) {
 23			/* Yuck, hardcoded. Needs to be a define */
 24			itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
 25			if (itv->vbi.sliced_mpeg_data[i] == NULL) {
 26				while (--i >= 0) {
 27					kfree(itv->vbi.sliced_mpeg_data[i]);
 28					itv->vbi.sliced_mpeg_data[i] = NULL;
 29				}
 30				return -ENOMEM;
 31			}
 32		}
 33	}
 34
 35	itv->vbi.insert_mpeg = fmt;
 36
 37	if (itv->vbi.insert_mpeg == 0) {
 38		return 0;
 39	}
 40	/* Need sliced data for mpeg insertion */
 41	if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
 42		if (itv->is_60hz)
 43			itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
 44		else
 45			itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
 46		ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
 47	}
 48	return 0;
 49}
 50
 51static int ivtv_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
 52{
 53	struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
 54	int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
 55	struct v4l2_subdev_format format = {
 56		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
 57	};
 58
 59	/* fix videodecoder resolution */
 60	format.format.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
 61	format.format.height = cxhdl->height;
 62	format.format.code = MEDIA_BUS_FMT_FIXED;
 63	v4l2_subdev_call(itv->sd_video, pad, set_fmt, NULL, &format);
 64	return 0;
 65}
 66
 67static int ivtv_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
 68{
 69	static const u32 freqs[3] = { 44100, 48000, 32000 };
 70	struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
 71
 72	/* The audio clock of the digitizer must match the codec sample
 73	   rate otherwise you get some very strange effects. */
 74	if (idx < ARRAY_SIZE(freqs))
 75		ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
 76	return 0;
 77}
 78
 79static int ivtv_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
 80{
 81	struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
 82
 83	itv->dualwatch_stereo_mode = val;
 84	return 0;
 85}
 86
 87const struct cx2341x_handler_ops ivtv_cxhdl_ops = {
 88	.s_audio_mode = ivtv_s_audio_mode,
 89	.s_audio_sampling_freq = ivtv_s_audio_sampling_freq,
 90	.s_video_encoding = ivtv_s_video_encoding,
 91	.s_stream_vbi_fmt = ivtv_s_stream_vbi_fmt,
 92};
 93
 94int ivtv_g_pts_frame(struct ivtv *itv, s64 *pts, s64 *frame)
 95{
 96	u32 data[CX2341X_MBOX_MAX_DATA];
 97
 98	if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
 99		*pts = (s64)((u64)itv->last_dec_timing[2] << 32) |
100			(u64)itv->last_dec_timing[1];
101		*frame = itv->last_dec_timing[0];
102		return 0;
103	}
104	*pts = 0;
105	*frame = 0;
106	if (atomic_read(&itv->decoding)) {
107		if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
108			IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
109			return -EIO;
110		}
111		memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
112		set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
113		*pts = (s64)((u64) data[2] << 32) | (u64) data[1];
114		*frame = data[0];
115		/*timing->scr = (u64) (((u64) data[4] << 32) | (u64) (data[3]));*/
116	}
117	return 0;
118}
119
120static int ivtv_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
121{
122	struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
123
124	switch (ctrl->id) {
125	/* V4L2_CID_MPEG_VIDEO_DEC_PTS and V4L2_CID_MPEG_VIDEO_DEC_FRAME
126	   control cluster */
127	case V4L2_CID_MPEG_VIDEO_DEC_PTS:
128		return ivtv_g_pts_frame(itv, itv->ctrl_pts->p_new.p_s64,
129					     itv->ctrl_frame->p_new.p_s64);
130	}
131	return 0;
132}
133
134static int ivtv_s_ctrl(struct v4l2_ctrl *ctrl)
135{
136	struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
137
138	switch (ctrl->id) {
139	/* V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK and MULTILINGUAL_PLAYBACK
140	   control cluster */
141	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
142		itv->audio_stereo_mode = itv->ctrl_audio_playback->val - 1;
143		itv->audio_bilingual_mode = itv->ctrl_audio_multilingual_playback->val - 1;
144		ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
145		break;
146	}
147	return 0;
148}
149
150const struct v4l2_ctrl_ops ivtv_hdl_out_ops = {
151	.s_ctrl = ivtv_s_ctrl,
152	.g_volatile_ctrl = ivtv_g_volatile_ctrl,
153};