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[media] tlg2300: fix frequency handling
The usual set of problems: the frequency isn't clamped to the frequency range, no tuner index check and the frequency isn't initialized properly on module load. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -36,8 +36,8 @@
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#define V4L_PAL_VBI_FRAMESIZE (V4L_PAL_VBI_LINES * 1440 * 2)
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#define V4L_NTSC_VBI_FRAMESIZE (V4L_NTSC_VBI_LINES * 1440 * 2)
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#define TUNER_FREQ_MIN (45000000)
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#define TUNER_FREQ_MAX (862000000)
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#define TUNER_FREQ_MIN (45000000U)
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#define TUNER_FREQ_MAX (862000000U)
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struct vbi_data {
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struct video_device v_dev;
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@ -940,7 +940,7 @@ static int vidioc_s_input(struct file *file, void *fh, unsigned int i)
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return 0;
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}
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static struct poseidon_control *check_control_id(__u32 id)
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static struct poseidon_control *check_control_id(u32 id)
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{
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struct poseidon_control *control = &controls[0];
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int array_size = ARRAY_SIZE(controls);
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@ -1134,21 +1134,21 @@ static int vidioc_g_frequency(struct file *file, void *fh,
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return 0;
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}
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static int set_frequency(struct poseidon *pd, __u32 frequency)
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static int set_frequency(struct poseidon *pd, u32 *frequency)
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{
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s32 ret = 0, param, cmd_status;
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struct running_context *context = &pd->video_data.context;
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param = frequency * 62500 / 1000;
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if (param < TUNER_FREQ_MIN/1000 || param > TUNER_FREQ_MAX / 1000)
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return -EINVAL;
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*frequency = clamp(*frequency,
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TUNER_FREQ_MIN / 62500, TUNER_FREQ_MAX / 62500);
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param = (*frequency) * 62500 / 1000;
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mutex_lock(&pd->lock);
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ret = send_set_req(pd, TUNE_FREQ_SELECT, param, &cmd_status);
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ret = send_set_req(pd, TAKE_REQUEST, 0, &cmd_status);
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msleep(250); /* wait for a while until the hardware is ready. */
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context->freq = frequency;
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context->freq = *frequency;
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mutex_unlock(&pd->lock);
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return ret;
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}
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@ -1159,12 +1159,14 @@ static int vidioc_s_frequency(struct file *file, void *fh,
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struct front_face *front = fh;
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struct poseidon *pd = front->pd;
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if (freq->tuner)
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return -EINVAL;
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logs(front);
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#ifdef CONFIG_PM
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pd->pm_suspend = pm_video_suspend;
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pd->pm_resume = pm_video_resume;
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#endif
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return set_frequency(pd, freq->frequency);
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return set_frequency(pd, &freq->frequency);
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}
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static int vidioc_reqbufs(struct file *file, void *fh,
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@ -1351,7 +1353,7 @@ static int restore_v4l2_context(struct poseidon *pd,
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vidioc_s_input(NULL, front, context->sig_index);
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pd_vidioc_s_tuner(pd, context->audio_idx);
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pd_vidioc_s_fmt(pd, &context->pix);
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set_frequency(pd, context->freq);
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set_frequency(pd, &context->freq);
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return 0;
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}
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@ -1615,8 +1617,10 @@ int pd_video_init(struct poseidon *pd)
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{
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struct video_data *video = &pd->video_data;
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struct vbi_data *vbi = &pd->vbi_data;
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u32 freq = TUNER_FREQ_MIN / 62500;
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int ret = -ENOMEM;
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set_frequency(pd, &freq);
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video->v_dev = pd_video_template;
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video->v_dev.v4l2_dev = &pd->v4l2_dev;
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video_set_drvdata(&video->v_dev, pd);
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