On 05/04/2019 08.24, Sean Young wrote:
> 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.
Hi Sean,
Kernel patch guidelines suggest ./scripts/checkpatch.pl without
--strict, so that is what I've always used. I have no problems switching
to strict from now on.
Regards,
Brad
> 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
