From d57fe404019b3c720e188156080c614290e1b78c Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Fri, 18 Jul 2014 16:22:29 -0300 Subject: [PATCH] [media] rtl2832_sdr: fill FMT buffer size Fill FMT buffer size field in order to inform app which will be used streaming buffer size. Currently driver doesn't allow buffer size value proposed by application. Signed-off-by: Antti Palosaari Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/rtl2832_sdr.c | 27 +++++++++++++++++------ 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c index 8665ea37b1b3..f58bd746d823 100644 --- a/drivers/media/dvb-frontends/rtl2832_sdr.c +++ b/drivers/media/dvb-frontends/rtl2832_sdr.c @@ -84,15 +84,18 @@ static const struct v4l2_frequency_band bands_fm[] = { struct rtl2832_sdr_format { char *name; u32 pixelformat; + u32 buffersize; }; static struct rtl2832_sdr_format formats[] = { { .name = "Complex U8", - .pixelformat = V4L2_SDR_FMT_CU8, + .pixelformat = V4L2_SDR_FMT_CU8, + .buffersize = BULK_BUFFER_SIZE, }, { .name = "Complex U16LE (emulated)", .pixelformat = V4L2_SDR_FMT_CU16LE, + .buffersize = BULK_BUFFER_SIZE * 2, }, }; @@ -143,6 +146,7 @@ struct rtl2832_sdr_state { unsigned int f_adc, f_tuner; u32 pixelformat; + u32 buffersize; unsigned int num_formats; /* Controls */ @@ -633,8 +637,7 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq, if (vq->num_buffers + *nbuffers < 8) *nbuffers = 8 - vq->num_buffers; *nplanes = 1; - /* 2 = max 16-bit sample returned */ - sizes[0] = PAGE_ALIGN(BULK_BUFFER_SIZE * 2); + sizes[0] = PAGE_ALIGN(s->buffersize); dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n", __func__, *nbuffers, sizes[0]); return 0; @@ -1233,6 +1236,8 @@ static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, dev_dbg(&s->udev->dev, "%s:\n", __func__); f->fmt.sdr.pixelformat = s->pixelformat; + f->fmt.sdr.buffersize = s->buffersize; + memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); return 0; @@ -1254,13 +1259,17 @@ static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); for (i = 0; i < s->num_formats; i++) { if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { - s->pixelformat = f->fmt.sdr.pixelformat; + s->pixelformat = formats[i].pixelformat; + s->buffersize = formats[i].buffersize; + f->fmt.sdr.buffersize = formats[i].buffersize; return 0; } } - f->fmt.sdr.pixelformat = formats[0].pixelformat; s->pixelformat = formats[0].pixelformat; + s->buffersize = formats[0].buffersize; + f->fmt.sdr.pixelformat = formats[0].pixelformat; + f->fmt.sdr.buffersize = formats[0].buffersize; return 0; } @@ -1276,11 +1285,14 @@ static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); for (i = 0; i < s->num_formats; i++) { - if (formats[i].pixelformat == f->fmt.sdr.pixelformat) + if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { + f->fmt.sdr.buffersize = formats[i].buffersize; return 0; + } } f->fmt.sdr.pixelformat = formats[0].pixelformat; + f->fmt.sdr.buffersize = formats[0].buffersize; return 0; } @@ -1418,7 +1430,8 @@ struct dvb_frontend *rtl2832_sdr_attach(struct dvb_frontend *fe, s->cfg = cfg; s->f_adc = bands_adc[0].rangelow; s->f_tuner = bands_fm[0].rangelow; - s->pixelformat = V4L2_SDR_FMT_CU8; + s->pixelformat = formats[0].pixelformat; + s->buffersize = formats[0].buffersize; s->num_formats = NUM_FORMATS; if (rtl2832_sdr_emulated_fmt == false) s->num_formats -= 1; -- 2.39.5