On Wed, Feb 27, 2019 at 12:27:39PM -0600, Brad Love wrote:
> Include set_analog_params, get_frequency, and get_bandwidth.
>
> Tested with NTSC and PAL standards via ch3/4 generator. Other standards
> are included, but are untested due to lack of generator.
There are quite a few warnings from checkpatch on this patch. Please
run patches through "./scripts/checkpatch.pl --strict" before submitting.
Generally there should be no output from checkpatch if possible.
Thanks
Sean
>
> Signed-off-by: Brad Love <b...@nextdimension.cc>
> ---
> Changes since v1:
> - remove __func__ from dev_dbg macros
>
> drivers/media/tuners/si2157.c | 245
> ++++++++++++++++++++++++++++++++++++-
> drivers/media/tuners/si2157_priv.h | 2 +
> 2 files changed, 244 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
> index f3a60a1..1006172 100644
> --- a/drivers/media/tuners/si2157.c
> +++ b/drivers/media/tuners/si2157.c
> @@ -371,7 +371,7 @@ static int si2157_set_params(struct dvb_frontend *fe)
> if (ret)
> goto err;
>
> - /* set if frequency if needed */
> + /* set digital if frequency if needed */
> if (if_frequency != dev->if_frequency) {
> memcpy(cmd.args, "\x14\x00\x06\x07", 4);
> cmd.args[4] = (if_frequency / 1000) & 0xff;
> @@ -385,7 +385,7 @@ static int si2157_set_params(struct dvb_frontend *fe)
> dev->if_frequency = if_frequency;
> }
>
> - /* set frequency */
> + /* set digital frequency */
> memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8);
> cmd.args[4] = (c->frequency >> 0) & 0xff;
> cmd.args[5] = (c->frequency >> 8) & 0xff;
> @@ -397,18 +397,254 @@ static int si2157_set_params(struct dvb_frontend *fe)
> if (ret)
> goto err;
>
> + dev->bandwidth = bandwidth;
> + dev->frequency = c->frequency;
> +
> + return 0;
> +err:
> + dev->bandwidth = 0;
> + dev->frequency = 0;
> + dev->if_frequency = 0;
> + dev_dbg(&client->dev, "failed=%d\n", ret);
> + return ret;
> +}
> +
> +static int si2157_set_analog_params(struct dvb_frontend *fe,
> + struct analog_parameters *params)
> +{
> + struct i2c_client *client = fe->tuner_priv;
> + struct si2157_dev *dev = i2c_get_clientdata(client);
> + char *std; /* for debugging */
> + int ret;
> + struct si2157_cmd cmd;
> + u32 bandwidth = 0;
> + u32 if_frequency = 0;
> + u32 freq = 0;
> + u64 tmp_lval = 0;
> + u8 system = 0;
> + u8 color = 0; /* 0=NTSC/PAL, 0x10=SECAM */
> + u8 invert_analog = 1; /* analog tuner spectrum; 0=normal, 1=inverted */
> +
> + if (dev->chiptype != SI2157_CHIPTYPE_SI2157) {
> + dev_info(&client->dev, "Analog tuning not supported for
> chiptype=%u\n",
> + dev->chiptype);
> + ret = -EINVAL;
> + goto err;
> + }
> +
> + if (!dev->active)
> + si2157_init(fe);
> +
> + if (!dev->active) {
> + ret = -EAGAIN;
> + goto err;
> + }
> + if (params->mode == V4L2_TUNER_RADIO) {
> + /*
> + * std = "fm";
> + * bandwidth = 1700000; //best can do for FM, AGC will be a mess though
> + * if_frequency = 1250000; //HVR-225x(saa7164), HVR-12xx(cx23885)
> + * if_frequency = 6600000; //HVR-9xx(cx231xx)
> + * if_frequency = 5500000; //HVR-19xx(pvrusb2)
> + */
> + dev_err(&client->dev, "si2157 does not currently support FM
> radio\n");
> + ret = -EINVAL;
> + goto err;
> + }
> + tmp_lval = params->frequency * 625LL;
> + do_div(tmp_lval, 10); /* convert to HZ */
> + freq = (u32)tmp_lval;
> +
> + if (freq < 1000000) /* is freq in KHz */
> + freq = freq * 1000;
> + dev->frequency = freq;
> +
> + /* if_frequency values based on tda187271C2 */
> + if (params->std & (V4L2_STD_B|V4L2_STD_GH)) {
> + if (freq >= 470000000) {
> + std = "palGH";
> + bandwidth = 8000000;
> + if_frequency = 6000000;
> + system = 1;
> + if (params->std & (V4L2_STD_SECAM_G|V4L2_STD_SECAM_H)) {
> + std = "secamGH";
> + color = 0x10;
> + }
> + } else {
> + std = "palB";
> + bandwidth = 7000000;
> + if_frequency = 6000000;
> + system = 0;
> + if (params->std & V4L2_STD_SECAM_B) {
> + std = "secamB";
> + color = 0x10;
> + }
> + }
> + } else if (params->std & V4L2_STD_MN) {
> + std = "MN";
> + bandwidth = 6000000;
> + if_frequency = 5400000;
> + system = 2;
> + } else if (params->std & V4L2_STD_PAL_I) {
> + std = "palI";
> + bandwidth = 8000000;
> + if_frequency = 7250000; /* TODO: does not work yet */
> + system = 4;
> + } else if (params->std & V4L2_STD_DK) {
> + std = "palDK";
> + bandwidth = 8000000;
> + if_frequency = 6900000; /* TODO: does not work yet */
> + system = 5;
> + if (params->std & V4L2_STD_SECAM_DK) {
> + std = "secamDK";
> + color = 0x10;
> + }
> + } else if (params->std & V4L2_STD_SECAM_L) {
> + std = "secamL";
> + bandwidth = 8000000;
> + if_frequency = 6750000; /* TODO: untested */
> + system = 6;
> + color = 0x10;
> + } else if (params->std & V4L2_STD_SECAM_LC) {
> + std = "secamL'";
> + bandwidth = 7000000;
> + if_frequency = 1250000; /* TODO: untested */
> + system = 7;
> + color = 0x10;
> + } else {
> + std = "unknown";
> + }
> + /* calc channel center freq */
> + freq = freq - 1250000 + (bandwidth/2);
> +
> + dev_dbg(&client->dev,
> + "mode=%d system=%u std='%s' params->frequency=%u center
> freq=%u if=%u bandwidth=%u\n",
> + params->mode, system, std, params->frequency,
> + freq, if_frequency, bandwidth);
> +
> + /* set analog IF port */
> + memcpy(cmd.args, "\x14\x00\x03\x06\x08\x02", 6);
> + /* in using dev->if_port, we assume analog and digital IF's */
> + /* are always on different ports */
> + /* assumes if_port definition is 0 or 1 for digital out */
> + cmd.args[4] = (dev->if_port == 1)?8:10;
> + cmd.args[5] = (dev->if_port == 1)?2:1; /* Analog AGC assumed external */
> + cmd.wlen = 6;
> + cmd.rlen = 4;
> + ret = si2157_cmd_execute(client, &cmd);
> + if (ret)
> + goto err;
> +
> + /* set analog IF output config */
> + memcpy(cmd.args, "\x14\x00\x0d\x06\x94\x64", 6);
> + cmd.wlen = 6;
> + cmd.rlen = 4;
> + ret = si2157_cmd_execute(client, &cmd);
> + if (ret)
> + goto err;
> +
> + /* make this distinct from a digital IF */
> + dev->if_frequency = if_frequency | 1;
> +
> + /* calc and set tuner analog if center frequency */
> + if_frequency = if_frequency + 1250000 - (bandwidth/2);
> + dev_dbg(&client->dev, "IF Ctr freq=%d\n", if_frequency);
> +
> + memcpy(cmd.args, "\x14\x00\x0C\x06", 4);
> + cmd.args[4] = (if_frequency / 1000) & 0xff;
> + cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff;
> + cmd.wlen = 6;
> + cmd.rlen = 4;
> + ret = si2157_cmd_execute(client, &cmd);
> + if (ret)
> + goto err;
> +
> + /* set analog AGC config */
> + memcpy(cmd.args, "\x14\x00\x07\x06\x32\xc8", 6);
> + cmd.wlen = 6;
> + cmd.rlen = 4;
> + ret = si2157_cmd_execute(client, &cmd);
> + if (ret)
> + goto err;
> +
> + /* set analog video mode */
> + memcpy(cmd.args, "\x14\x00\x04\x06\x00\x00", 6);
> + cmd.args[4] = system | color;
> +#if 1 /* can use dev->inversion if assumed it applies to both digital/analog
> */
> + if (invert_analog)
> + cmd.args[5] |= 0x02;
> +#else
> + if (dev->inversion)
> + cmd.args[5] |= 0x02;
> +#endif
> + cmd.wlen = 6;
> + cmd.rlen = 1;
> + ret = si2157_cmd_execute(client, &cmd);
> + if (ret)
> + goto err;
> +
> + /* set analog frequency */
> + memcpy(cmd.args, "\x41\x01\x00\x00\x00\x00\x00\x00", 8);
> + cmd.args[4] = (freq >> 0) & 0xff;
> + cmd.args[5] = (freq >> 8) & 0xff;
> + cmd.args[6] = (freq >> 16) & 0xff;
> + cmd.args[7] = (freq >> 24) & 0xff;
> + cmd.wlen = 8;
> + cmd.rlen = 1;
> + ret = si2157_cmd_execute(client, &cmd);
> + if (ret)
> + goto err;
> +
> +#if 0 /* testing */
> + /* get tuner status, RSSI values */
> + memcpy(cmd.args, "\x42\x01", 2);
> + cmd.wlen = 2;
> + cmd.rlen = 12;
> + ret = si2157_cmd_execute(client, &cmd);
> +
> + dev_info(&client->dev, "tuner status: ret=%d rssi=%d mode=%x freq=%d\n",
> + ret, cmd.args[3], cmd.args[8],
> + (cmd.args[7]<<24 | cmd.args[6]<<16 |
> + cmd.args[5]<<8 | cmd.args[4]));
> +#endif
> + dev->bandwidth = bandwidth;
> +
> return 0;
> err:
> + dev->bandwidth = 0;
> + dev->frequency = 0;
> + dev->if_frequency = 0;
> dev_dbg(&client->dev, "failed=%d\n", ret);
> return ret;
> }
>
> +static int si2157_get_frequency(struct dvb_frontend *fe, u32 *frequency)
> +{
> + struct i2c_client *client = fe->tuner_priv;
> + struct si2157_dev *dev = i2c_get_clientdata(client);
> +
> + *frequency = dev->frequency;
> + dev_dbg(&client->dev, "freq=%u\n", dev->frequency);
> + return 0;
> +}
> +
> +static int si2157_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
> +{
> + struct i2c_client *client = fe->tuner_priv;
> + struct si2157_dev *dev = i2c_get_clientdata(client);
> +
> + *bandwidth = dev->bandwidth;
> + dev_dbg(&client->dev, "bandwidth=%u\n", dev->bandwidth);
> + return 0;
> +}
> +
> static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
> {
> struct i2c_client *client = fe->tuner_priv;
> struct si2157_dev *dev = i2c_get_clientdata(client);
>
> - *frequency = dev->if_frequency;
> + *frequency = dev->if_frequency & ~1; /* strip analog IF indicator bit */
> + dev_dbg(&client->dev, "if_frequency=%u\n", *frequency);
> return 0;
> }
>
> @@ -422,6 +658,9 @@ static const struct dvb_tuner_ops si2157_ops = {
> .init = si2157_init,
> .sleep = si2157_sleep,
> .set_params = si2157_set_params,
> + .set_analog_params = si2157_set_analog_params,
> + .get_frequency = si2157_get_frequency,
> + .get_bandwidth = si2157_get_bandwidth,
> .get_if_frequency = si2157_get_if_frequency,
> };
>
> diff --git a/drivers/media/tuners/si2157_priv.h
> b/drivers/media/tuners/si2157_priv.h
> index 50f8630..1e5ce5b 100644
> --- a/drivers/media/tuners/si2157_priv.h
> +++ b/drivers/media/tuners/si2157_priv.h
> @@ -37,6 +37,8 @@ struct si2157_dev {
> u8 chiptype;
> u8 if_port;
> u32 if_frequency;
> + u32 bandwidth;
> + u32 frequency;
> struct delayed_work stat_work;
>
> #if defined(CONFIG_MEDIA_CONTROLLER)
> --
> 2.7.4
