linux/drivers/media/pci/ivtv/ivtv-controls.c
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   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@xs4all.nl>
   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};
 154