From 659a0999fd12dbf5b4db6a158adca6e72fa4293a Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Wed, 29 Jun 2016 20:40:21 -0300 Subject: [PATCH] [media] af9033: move statistics to read_status() Move statistics polling to read_status() in order to avoid use of kernel work. Signed-off-by: Antti Palosaari Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/af9033.c | 326 +++++++++++++-------------- 1 file changed, 154 insertions(+), 172 deletions(-) diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c index efebe5ce2429..42fbd0fb27c8 100644 --- a/drivers/media/dvb-frontends/af9033.c +++ b/drivers/media/dvb-frontends/af9033.c @@ -41,7 +41,6 @@ struct af9033_dev { u64 post_bit_count; u64 error_block_count; u64 total_block_count; - struct delayed_work stat_work; }; /* write multiple registers */ @@ -468,8 +467,6 @@ static int af9033_init(struct dvb_frontend *fe) c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; c->post_bit_error.len = 1; c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; - /* start statistics polling */ - schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); return 0; @@ -485,9 +482,6 @@ static int af9033_sleep(struct dvb_frontend *fe) int ret, i; u8 tmp; - /* stop statistics polling */ - cancel_delayed_work_sync(&dev->stat_work); - ret = af9033_wr_reg(dev, 0x80004c, 1); if (ret < 0) goto err; @@ -821,36 +815,39 @@ err: static int af9033_read_status(struct dvb_frontend *fe, enum fe_status *status) { struct af9033_dev *dev = fe->demodulator_priv; - int ret; - u8 tmp; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, i, tmp; + u8 u8tmp, buf[7]; + + dev_dbg(&dev->client->dev, "\n"); *status = 0; /* radio channel status, 0=no result, 1=has signal, 2=no signal */ - ret = af9033_rd_reg(dev, 0x800047, &tmp); + ret = af9033_rd_reg(dev, 0x800047, &u8tmp); if (ret < 0) goto err; /* has signal */ - if (tmp == 0x01) + if (u8tmp == 0x01) *status |= FE_HAS_SIGNAL; - if (tmp != 0x02) { + if (u8tmp != 0x02) { /* TPS lock */ - ret = af9033_rd_reg_mask(dev, 0x80f5a9, &tmp, 0x01); + ret = af9033_rd_reg_mask(dev, 0x80f5a9, &u8tmp, 0x01); if (ret < 0) goto err; - if (tmp) + if (u8tmp) *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI; /* full lock */ - ret = af9033_rd_reg_mask(dev, 0x80f999, &tmp, 0x01); + ret = af9033_rd_reg_mask(dev, 0x80f999, &u8tmp, 0x01); if (ret < 0) goto err; - if (tmp) + if (u8tmp) *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; @@ -858,6 +855,148 @@ static int af9033_read_status(struct dvb_frontend *fe, enum fe_status *status) dev->fe_status = *status; + /* signal strength */ + if (dev->fe_status & FE_HAS_SIGNAL) { + if (dev->is_af9035) { + ret = af9033_rd_reg(dev, 0x80004a, &u8tmp); + if (ret) + goto err; + tmp = -u8tmp * 1000; + } else { + ret = af9033_rd_reg(dev, 0x8000f7, &u8tmp); + if (ret) + goto err; + tmp = (u8tmp - 100) * 1000; + } + + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_DECIBEL; + c->strength.stat[0].svalue = tmp; + } else { + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* CNR */ + if (dev->fe_status & FE_HAS_VITERBI) { + u32 snr_val, snr_lut_size; + const struct val_snr *snr_lut; + + /* read value */ + ret = af9033_rd_regs(dev, 0x80002c, buf, 3); + if (ret) + goto err; + + snr_val = (buf[2] << 16) | (buf[1] << 8) | (buf[0] << 0); + + /* read superframe number */ + ret = af9033_rd_reg(dev, 0x80f78b, &u8tmp); + if (ret) + goto err; + + if (u8tmp) + snr_val /= u8tmp; + + /* read current transmission mode */ + ret = af9033_rd_reg(dev, 0x80f900, &u8tmp); + if (ret) + goto err; + + switch ((u8tmp >> 0) & 3) { + case 0: + snr_val *= 4; + break; + case 1: + snr_val *= 1; + break; + case 2: + snr_val *= 2; + break; + default: + snr_val *= 0; + break; + } + + /* read current modulation */ + ret = af9033_rd_reg(dev, 0x80f903, &u8tmp); + if (ret) + goto err; + + switch ((u8tmp >> 0) & 3) { + case 0: + snr_lut_size = ARRAY_SIZE(qpsk_snr_lut); + snr_lut = qpsk_snr_lut; + break; + case 1: + snr_lut_size = ARRAY_SIZE(qam16_snr_lut); + snr_lut = qam16_snr_lut; + break; + case 2: + snr_lut_size = ARRAY_SIZE(qam64_snr_lut); + snr_lut = qam64_snr_lut; + break; + default: + snr_lut_size = 0; + tmp = 0; + break; + } + + for (i = 0; i < snr_lut_size; i++) { + tmp = snr_lut[i].snr * 1000; + if (snr_val < snr_lut[i].val) + break; + } + + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = tmp; + } else { + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* UCB/PER/BER */ + if (dev->fe_status & FE_HAS_LOCK) { + /* outer FEC, 204 byte packets */ + u16 abort_packet_count, rsd_packet_count; + /* inner FEC, bits */ + u32 rsd_bit_err_count; + + /* + * Packet count used for measurement is 10000 + * (rsd_packet_count). Maybe it should be increased? + */ + + ret = af9033_rd_regs(dev, 0x800032, buf, 7); + if (ret) + goto err; + + abort_packet_count = (buf[1] << 8) | (buf[0] << 0); + rsd_bit_err_count = (buf[4] << 16) | (buf[3] << 8) | buf[2]; + rsd_packet_count = (buf[6] << 8) | (buf[5] << 0); + + dev->error_block_count += abort_packet_count; + dev->total_block_count += rsd_packet_count; + dev->post_bit_error += rsd_bit_err_count; + dev->post_bit_count += rsd_packet_count * 204 * 8; + + c->block_count.len = 1; + c->block_count.stat[0].scale = FE_SCALE_COUNTER; + c->block_count.stat[0].uvalue = dev->total_block_count; + + c->block_error.len = 1; + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue = dev->error_block_count; + + c->post_bit_count.len = 1; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue = dev->post_bit_count; + + c->post_bit_error.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue = dev->post_bit_error; + } + return 0; err: @@ -1059,159 +1198,6 @@ err: return ret; } -static void af9033_stat_work(struct work_struct *work) -{ - struct af9033_dev *dev = container_of(work, struct af9033_dev, stat_work.work); - struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; - int ret, tmp, i, len; - u8 u8tmp, buf[7]; - - dev_dbg(&dev->client->dev, "\n"); - - /* signal strength */ - if (dev->fe_status & FE_HAS_SIGNAL) { - if (dev->is_af9035) { - ret = af9033_rd_reg(dev, 0x80004a, &u8tmp); - tmp = -u8tmp * 1000; - } else { - ret = af9033_rd_reg(dev, 0x8000f7, &u8tmp); - tmp = (u8tmp - 100) * 1000; - } - if (ret) - goto err; - - c->strength.len = 1; - c->strength.stat[0].scale = FE_SCALE_DECIBEL; - c->strength.stat[0].svalue = tmp; - } else { - c->strength.len = 1; - c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; - } - - /* CNR */ - if (dev->fe_status & FE_HAS_VITERBI) { - u32 snr_val; - const struct val_snr *snr_lut; - - /* read value */ - ret = af9033_rd_regs(dev, 0x80002c, buf, 3); - if (ret) - goto err; - - snr_val = (buf[2] << 16) | (buf[1] << 8) | (buf[0] << 0); - - /* read superframe number */ - ret = af9033_rd_reg(dev, 0x80f78b, &u8tmp); - if (ret) - goto err; - - if (u8tmp) - snr_val /= u8tmp; - - /* read current transmission mode */ - ret = af9033_rd_reg(dev, 0x80f900, &u8tmp); - if (ret) - goto err; - - switch ((u8tmp >> 0) & 3) { - case 0: - snr_val *= 4; - break; - case 1: - snr_val *= 1; - break; - case 2: - snr_val *= 2; - break; - default: - goto err_schedule_delayed_work; - } - - /* read current modulation */ - ret = af9033_rd_reg(dev, 0x80f903, &u8tmp); - if (ret) - goto err; - - switch ((u8tmp >> 0) & 3) { - case 0: - len = ARRAY_SIZE(qpsk_snr_lut); - snr_lut = qpsk_snr_lut; - break; - case 1: - len = ARRAY_SIZE(qam16_snr_lut); - snr_lut = qam16_snr_lut; - break; - case 2: - len = ARRAY_SIZE(qam64_snr_lut); - snr_lut = qam64_snr_lut; - break; - default: - goto err_schedule_delayed_work; - } - - for (i = 0; i < len; i++) { - tmp = snr_lut[i].snr * 1000; - if (snr_val < snr_lut[i].val) - break; - } - - c->cnr.len = 1; - c->cnr.stat[0].scale = FE_SCALE_DECIBEL; - c->cnr.stat[0].svalue = tmp; - } else { - c->cnr.len = 1; - c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; - } - - /* UCB/PER/BER */ - if (dev->fe_status & FE_HAS_LOCK) { - /* outer FEC, 204 byte packets */ - u16 abort_packet_count, rsd_packet_count; - /* inner FEC, bits */ - u32 rsd_bit_err_count; - - /* - * Packet count used for measurement is 10000 - * (rsd_packet_count). Maybe it should be increased? - */ - - ret = af9033_rd_regs(dev, 0x800032, buf, 7); - if (ret) - goto err; - - abort_packet_count = (buf[1] << 8) | (buf[0] << 0); - rsd_bit_err_count = (buf[4] << 16) | (buf[3] << 8) | buf[2]; - rsd_packet_count = (buf[6] << 8) | (buf[5] << 0); - - dev->error_block_count += abort_packet_count; - dev->total_block_count += rsd_packet_count; - dev->post_bit_error += rsd_bit_err_count; - dev->post_bit_count += rsd_packet_count * 204 * 8; - - c->block_count.len = 1; - c->block_count.stat[0].scale = FE_SCALE_COUNTER; - c->block_count.stat[0].uvalue = dev->total_block_count; - - c->block_error.len = 1; - c->block_error.stat[0].scale = FE_SCALE_COUNTER; - c->block_error.stat[0].uvalue = dev->error_block_count; - - c->post_bit_count.len = 1; - c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; - c->post_bit_count.stat[0].uvalue = dev->post_bit_count; - - c->post_bit_error.len = 1; - c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; - c->post_bit_error.stat[0].uvalue = dev->post_bit_error; - } - -err_schedule_delayed_work: - schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); - return; -err: - dev_dbg(&dev->client->dev, "failed=%d\n", ret); -} - static struct dvb_frontend_ops af9033_ops = { .delsys = { SYS_DVBT }, .info = { @@ -1272,7 +1258,6 @@ static int af9033_probe(struct i2c_client *client, /* setup the state */ dev->client = client; - INIT_DELAYED_WORK(&dev->stat_work, af9033_stat_work); memcpy(&dev->cfg, cfg, sizeof(struct af9033_config)); if (dev->cfg.clock != 12000000) { @@ -1372,9 +1357,6 @@ static int af9033_remove(struct i2c_client *client) dev_dbg(&dev->client->dev, "\n"); - /* stop statistics polling */ - cancel_delayed_work_sync(&dev->stat_work); - dev->fe.ops.release = NULL; dev->fe.demodulator_priv = NULL; kfree(dev); -- 2.39.5