diff options
Diffstat (limited to 'drivers/media/dvb-frontends/rtl2830.c')
| -rw-r--r-- | drivers/media/dvb-frontends/rtl2830.c | 944 |
1 files changed, 551 insertions, 393 deletions
diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c index 50e8b63e5169..e1b8df62bd59 100644 --- a/drivers/media/dvb-frontends/rtl2830.c +++ b/drivers/media/dvb-frontends/rtl2830.c @@ -13,261 +13,154 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - - -/* - * Driver implements own I2C-adapter for tuner I2C access. That's since chip - * have unusual I2C-gate control which closes gate automatically after each - * I2C transfer. Using own I2C adapter we can workaround that. */ #include "rtl2830_priv.h" -/* Max transfer size done by I2C transfer functions */ -#define MAX_XFER_SIZE 64 - -/* write multiple hardware registers */ -static int rtl2830_wr(struct rtl2830_priv *priv, u8 reg, const u8 *val, int len) +/* Our regmap is bypassing I2C adapter lock, thus we do it! */ +static int rtl2830_bulk_write(struct i2c_client *client, unsigned int reg, + const void *val, size_t val_count) { + struct rtl2830_dev *dev = i2c_get_clientdata(client); int ret; - u8 buf[MAX_XFER_SIZE]; - struct i2c_msg msg[1] = { - { - .addr = priv->cfg.i2c_addr, - .flags = 0, - .len = 1 + len, - .buf = buf, - } - }; - - if (1 + len > sizeof(buf)) { - dev_warn(&priv->i2c->dev, - "%s: i2c wr reg=%04x: len=%d is too big!\n", - KBUILD_MODNAME, reg, len); - return -EINVAL; - } - - buf[0] = reg; - memcpy(&buf[1], val, len); - ret = i2c_transfer(priv->i2c, msg, 1); - if (ret == 1) { - ret = 0; - } else { - dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x " \ - "len=%d\n", KBUILD_MODNAME, ret, reg, len); - ret = -EREMOTEIO; - } + i2c_lock_adapter(client->adapter); + ret = regmap_bulk_write(dev->regmap, reg, val, val_count); + i2c_unlock_adapter(client->adapter); return ret; } -/* read multiple hardware registers */ -static int rtl2830_rd(struct rtl2830_priv *priv, u8 reg, u8 *val, int len) +static int rtl2830_update_bits(struct i2c_client *client, unsigned int reg, + unsigned int mask, unsigned int val) { + struct rtl2830_dev *dev = i2c_get_clientdata(client); int ret; - struct i2c_msg msg[2] = { - { - .addr = priv->cfg.i2c_addr, - .flags = 0, - .len = 1, - .buf = ®, - }, { - .addr = priv->cfg.i2c_addr, - .flags = I2C_M_RD, - .len = len, - .buf = val, - } - }; - ret = i2c_transfer(priv->i2c, msg, 2); - if (ret == 2) { - ret = 0; - } else { - dev_warn(&priv->i2c->dev, "%s: i2c rd failed=%d reg=%02x " \ - "len=%d\n", KBUILD_MODNAME, ret, reg, len); - ret = -EREMOTEIO; - } + i2c_lock_adapter(client->adapter); + ret = regmap_update_bits(dev->regmap, reg, mask, val); + i2c_unlock_adapter(client->adapter); return ret; } -/* write multiple registers */ -static int rtl2830_wr_regs(struct rtl2830_priv *priv, u16 reg, const u8 *val, - int len) +static int rtl2830_bulk_read(struct i2c_client *client, unsigned int reg, + void *val, size_t val_count) { + struct rtl2830_dev *dev = i2c_get_clientdata(client); int ret; - u8 reg2 = (reg >> 0) & 0xff; - u8 page = (reg >> 8) & 0xff; - - /* switch bank if needed */ - if (page != priv->page) { - ret = rtl2830_wr(priv, 0x00, &page, 1); - if (ret) - return ret; - - priv->page = page; - } - - return rtl2830_wr(priv, reg2, val, len); -} - -/* read multiple registers */ -static int rtl2830_rd_regs(struct rtl2830_priv *priv, u16 reg, u8 *val, int len) -{ - int ret; - u8 reg2 = (reg >> 0) & 0xff; - u8 page = (reg >> 8) & 0xff; - - /* switch bank if needed */ - if (page != priv->page) { - ret = rtl2830_wr(priv, 0x00, &page, 1); - if (ret) - return ret; - - priv->page = page; - } - return rtl2830_rd(priv, reg2, val, len); -} - -/* read single register */ -static int rtl2830_rd_reg(struct rtl2830_priv *priv, u16 reg, u8 *val) -{ - return rtl2830_rd_regs(priv, reg, val, 1); -} - -/* write single register with mask */ -static int rtl2830_wr_reg_mask(struct rtl2830_priv *priv, u16 reg, u8 val, u8 mask) -{ - int ret; - u8 tmp; - - /* no need for read if whole reg is written */ - if (mask != 0xff) { - ret = rtl2830_rd_regs(priv, reg, &tmp, 1); - if (ret) - return ret; - - val &= mask; - tmp &= ~mask; - val |= tmp; - } - - return rtl2830_wr_regs(priv, reg, &val, 1); -} - -/* read single register with mask */ -static int rtl2830_rd_reg_mask(struct rtl2830_priv *priv, u16 reg, u8 *val, u8 mask) -{ - int ret, i; - u8 tmp; - - ret = rtl2830_rd_regs(priv, reg, &tmp, 1); - if (ret) - return ret; - - tmp &= mask; - - /* find position of the first bit */ - for (i = 0; i < 8; i++) { - if ((mask >> i) & 0x01) - break; - } - *val = tmp >> i; - - return 0; + i2c_lock_adapter(client->adapter); + ret = regmap_bulk_read(dev->regmap, reg, val, val_count); + i2c_unlock_adapter(client->adapter); + return ret; } static int rtl2830_init(struct dvb_frontend *fe) { - struct rtl2830_priv *priv = fe->demodulator_priv; + struct i2c_client *client = fe->demodulator_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); + struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; int ret, i; struct rtl2830_reg_val_mask tab[] = { - { 0x00d, 0x01, 0x03 }, - { 0x00d, 0x10, 0x10 }, - { 0x104, 0x00, 0x1e }, - { 0x105, 0x80, 0x80 }, - { 0x110, 0x02, 0x03 }, - { 0x110, 0x08, 0x0c }, - { 0x17b, 0x00, 0x40 }, - { 0x17d, 0x05, 0x0f }, - { 0x17d, 0x50, 0xf0 }, - { 0x18c, 0x08, 0x0f }, - { 0x18d, 0x00, 0xc0 }, - { 0x188, 0x05, 0x0f }, - { 0x189, 0x00, 0xfc }, - { 0x2d5, 0x02, 0x02 }, - { 0x2f1, 0x02, 0x06 }, - { 0x2f1, 0x20, 0xf8 }, - { 0x16d, 0x00, 0x01 }, - { 0x1a6, 0x00, 0x80 }, - { 0x106, priv->cfg.vtop, 0x3f }, - { 0x107, priv->cfg.krf, 0x3f }, - { 0x112, 0x28, 0xff }, - { 0x103, priv->cfg.agc_targ_val, 0xff }, - { 0x00a, 0x02, 0x07 }, - { 0x140, 0x0c, 0x3c }, - { 0x140, 0x40, 0xc0 }, - { 0x15b, 0x05, 0x07 }, - { 0x15b, 0x28, 0x38 }, - { 0x15c, 0x05, 0x07 }, - { 0x15c, 0x28, 0x38 }, - { 0x115, priv->cfg.spec_inv, 0x01 }, - { 0x16f, 0x01, 0x07 }, - { 0x170, 0x18, 0x38 }, - { 0x172, 0x0f, 0x0f }, - { 0x173, 0x08, 0x38 }, - { 0x175, 0x01, 0x07 }, - { 0x176, 0x00, 0xc0 }, + {0x00d, 0x01, 0x03}, + {0x00d, 0x10, 0x10}, + {0x104, 0x00, 0x1e}, + {0x105, 0x80, 0x80}, + {0x110, 0x02, 0x03}, + {0x110, 0x08, 0x0c}, + {0x17b, 0x00, 0x40}, + {0x17d, 0x05, 0x0f}, + {0x17d, 0x50, 0xf0}, + {0x18c, 0x08, 0x0f}, + {0x18d, 0x00, 0xc0}, + {0x188, 0x05, 0x0f}, + {0x189, 0x00, 0xfc}, + {0x2d5, 0x02, 0x02}, + {0x2f1, 0x02, 0x06}, + {0x2f1, 0x20, 0xf8}, + {0x16d, 0x00, 0x01}, + {0x1a6, 0x00, 0x80}, + {0x106, dev->pdata->vtop, 0x3f}, + {0x107, dev->pdata->krf, 0x3f}, + {0x112, 0x28, 0xff}, + {0x103, dev->pdata->agc_targ_val, 0xff}, + {0x00a, 0x02, 0x07}, + {0x140, 0x0c, 0x3c}, + {0x140, 0x40, 0xc0}, + {0x15b, 0x05, 0x07}, + {0x15b, 0x28, 0x38}, + {0x15c, 0x05, 0x07}, + {0x15c, 0x28, 0x38}, + {0x115, dev->pdata->spec_inv, 0x01}, + {0x16f, 0x01, 0x07}, + {0x170, 0x18, 0x38}, + {0x172, 0x0f, 0x0f}, + {0x173, 0x08, 0x38}, + {0x175, 0x01, 0x07}, + {0x176, 0x00, 0xc0}, }; for (i = 0; i < ARRAY_SIZE(tab); i++) { - ret = rtl2830_wr_reg_mask(priv, tab[i].reg, tab[i].val, - tab[i].mask); + ret = rtl2830_update_bits(client, tab[i].reg, tab[i].mask, + tab[i].val); if (ret) goto err; } - ret = rtl2830_wr_regs(priv, 0x18f, "\x28\x00", 2); + ret = rtl2830_bulk_write(client, 0x18f, "\x28\x00", 2); if (ret) goto err; - ret = rtl2830_wr_regs(priv, 0x195, - "\x04\x06\x0a\x12\x0a\x12\x1e\x28", 8); + ret = rtl2830_bulk_write(client, 0x195, + "\x04\x06\x0a\x12\x0a\x12\x1e\x28", 8); if (ret) goto err; /* TODO: spec init */ /* soft reset */ - ret = rtl2830_wr_reg_mask(priv, 0x101, 0x04, 0x04); + ret = rtl2830_update_bits(client, 0x101, 0x04, 0x04); if (ret) goto err; - ret = rtl2830_wr_reg_mask(priv, 0x101, 0x00, 0x04); + ret = rtl2830_update_bits(client, 0x101, 0x04, 0x00); if (ret) goto err; - priv->sleeping = false; + /* init stats here in order signal app which stats are supported */ + c->strength.len = 1; + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_error.len = 1; + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.len = 1; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + /* start statistics polling */ + schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); + + dev->sleeping = false; return ret; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } static int rtl2830_sleep(struct dvb_frontend *fe) { - struct rtl2830_priv *priv = fe->demodulator_priv; - priv->sleeping = true; + struct i2c_client *client = fe->demodulator_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); + + dev->sleeping = true; + /* stop statistics polling */ + cancel_delayed_work_sync(&dev->stat_work); + dev->fe_status = 0; + return 0; } static int rtl2830_get_tune_settings(struct dvb_frontend *fe, - struct dvb_frontend_tune_settings *s) + struct dvb_frontend_tune_settings *s) { s->min_delay_ms = 500; s->step_size = fe->ops.info.frequency_stepsize * 2; @@ -278,11 +171,12 @@ static int rtl2830_get_tune_settings(struct dvb_frontend *fe, static int rtl2830_set_frontend(struct dvb_frontend *fe) { - struct rtl2830_priv *priv = fe->demodulator_priv; + struct i2c_client *client = fe->demodulator_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret, i; u64 num; - u8 buf[3], tmp; + u8 buf[3], u8tmp; u32 if_ctl, if_frequency; static const u8 bw_params1[3][34] = { { @@ -308,9 +202,8 @@ static int rtl2830_set_frontend(struct dvb_frontend *fe) {0xae, 0xba, 0xf3, 0x26, 0x66, 0x64}, /* 8 MHz */ }; - dev_dbg(&priv->i2c->dev, - "%s: frequency=%d bandwidth_hz=%d inversion=%d\n", - __func__, c->frequency, c->bandwidth_hz, c->inversion); + dev_dbg(&client->dev, "frequency=%u bandwidth_hz=%u inversion=%u\n", + c->frequency, c->bandwidth_hz, c->inversion); /* program tuner */ if (fe->ops.tuner_ops.set_params) @@ -327,11 +220,12 @@ static int rtl2830_set_frontend(struct dvb_frontend *fe) i = 2; break; default: - dev_dbg(&priv->i2c->dev, "%s: invalid bandwidth\n", __func__); + dev_err(&client->dev, "invalid bandwidth_hz %u\n", + c->bandwidth_hz); return -EINVAL; } - ret = rtl2830_wr_reg_mask(priv, 0x008, i << 1, 0x06); + ret = rtl2830_update_bits(client, 0x008, 0x06, i << 1); if (ret) goto err; @@ -340,70 +234,71 @@ static int rtl2830_set_frontend(struct dvb_frontend *fe) ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); else ret = -EINVAL; - - if (ret < 0) + if (ret) goto err; - num = if_frequency % priv->cfg.xtal; + num = if_frequency % dev->pdata->clk; num *= 0x400000; - num = div_u64(num, priv->cfg.xtal); + num = div_u64(num, dev->pdata->clk); num = -num; if_ctl = num & 0x3fffff; - dev_dbg(&priv->i2c->dev, "%s: if_frequency=%d if_ctl=%08x\n", - __func__, if_frequency, if_ctl); + dev_dbg(&client->dev, "if_frequency=%d if_ctl=%08x\n", + if_frequency, if_ctl); - ret = rtl2830_rd_reg_mask(priv, 0x119, &tmp, 0xc0); /* b[7:6] */ + buf[0] = (if_ctl >> 16) & 0x3f; + buf[1] = (if_ctl >> 8) & 0xff; + buf[2] = (if_ctl >> 0) & 0xff; + + ret = rtl2830_bulk_read(client, 0x119, &u8tmp, 1); if (ret) goto err; - buf[0] = tmp << 6; - buf[0] |= (if_ctl >> 16) & 0x3f; - buf[1] = (if_ctl >> 8) & 0xff; - buf[2] = (if_ctl >> 0) & 0xff; + buf[0] |= u8tmp & 0xc0; /* [7:6] */ - ret = rtl2830_wr_regs(priv, 0x119, buf, 3); + ret = rtl2830_bulk_write(client, 0x119, buf, 3); if (ret) goto err; /* 1/2 split I2C write */ - ret = rtl2830_wr_regs(priv, 0x11c, &bw_params1[i][0], 17); + ret = rtl2830_bulk_write(client, 0x11c, &bw_params1[i][0], 17); if (ret) goto err; /* 2/2 split I2C write */ - ret = rtl2830_wr_regs(priv, 0x12d, &bw_params1[i][17], 17); + ret = rtl2830_bulk_write(client, 0x12d, &bw_params1[i][17], 17); if (ret) goto err; - ret = rtl2830_wr_regs(priv, 0x19d, bw_params2[i], 6); + ret = rtl2830_bulk_write(client, 0x19d, bw_params2[i], 6); if (ret) goto err; return ret; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } static int rtl2830_get_frontend(struct dvb_frontend *fe) { - struct rtl2830_priv *priv = fe->demodulator_priv; + struct i2c_client *client = fe->demodulator_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret; u8 buf[3]; - if (priv->sleeping) + if (dev->sleeping) return 0; - ret = rtl2830_rd_regs(priv, 0x33c, buf, 2); + ret = rtl2830_bulk_read(client, 0x33c, buf, 2); if (ret) goto err; - ret = rtl2830_rd_reg(priv, 0x351, &buf[2]); + ret = rtl2830_bulk_read(client, 0x351, &buf[2], 1); if (ret) goto err; - dev_dbg(&priv->i2c->dev, "%s: TPS=%*ph\n", __func__, 3, buf); + dev_dbg(&client->dev, "TPS=%*ph\n", 3, buf); switch ((buf[0] >> 2) & 3) { case 0: @@ -493,280 +388,543 @@ static int rtl2830_get_frontend(struct dvb_frontend *fe) return 0; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } static int rtl2830_read_status(struct dvb_frontend *fe, fe_status_t *status) { - struct rtl2830_priv *priv = fe->demodulator_priv; + struct i2c_client *client = fe->demodulator_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); int ret; - u8 tmp; + u8 u8tmp; + *status = 0; - if (priv->sleeping) + if (dev->sleeping) return 0; - ret = rtl2830_rd_reg_mask(priv, 0x351, &tmp, 0x78); /* [6:3] */ + ret = rtl2830_bulk_read(client, 0x351, &u8tmp, 1); if (ret) goto err; - if (tmp == 11) { + u8tmp = (u8tmp >> 3) & 0x0f; /* [6:3] */ + if (u8tmp == 11) { *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; - } else if (tmp == 10) { + } else if (u8tmp == 10) { *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI; } + dev->fe_status = *status; + return ret; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } static int rtl2830_read_snr(struct dvb_frontend *fe, u16 *snr) { - struct rtl2830_priv *priv = fe->demodulator_priv; - int ret, hierarchy, constellation; - u8 buf[2], tmp; - u16 tmp16; -#define CONSTELLATION_NUM 3 -#define HIERARCHY_NUM 4 - static const u32 snr_constant[CONSTELLATION_NUM][HIERARCHY_NUM] = { - { 70705899, 70705899, 70705899, 70705899 }, - { 82433173, 82433173, 87483115, 94445660 }, - { 92888734, 92888734, 95487525, 99770748 }, - }; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; - if (priv->sleeping) - return 0; + if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL) + *snr = div_s64(c->cnr.stat[0].svalue, 100); + else + *snr = 0; - /* reports SNR in resolution of 0.1 dB */ + return 0; +} - ret = rtl2830_rd_reg(priv, 0x33c, &tmp); - if (ret) - goto err; +static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct i2c_client *client = fe->demodulator_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); - constellation = (tmp >> 2) & 0x03; /* [3:2] */ - if (constellation > CONSTELLATION_NUM - 1) - goto err; + *ber = (dev->post_bit_error - dev->post_bit_error_prev); + dev->post_bit_error_prev = dev->post_bit_error; - hierarchy = (tmp >> 4) & 0x07; /* [6:4] */ - if (hierarchy > HIERARCHY_NUM - 1) - goto err; + return 0; +} - ret = rtl2830_rd_regs(priv, 0x40c, buf, 2); - if (ret) - goto err; +static int rtl2830_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + *ucblocks = 0; - tmp16 = buf[0] << 8 | buf[1]; + return 0; +} + +static int rtl2830_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; - if (tmp16) - *snr = (snr_constant[constellation][hierarchy] - - intlog10(tmp16)) / ((1 << 24) / 100); + if (c->strength.stat[0].scale == FE_SCALE_RELATIVE) + *strength = c->strength.stat[0].uvalue; else - *snr = 0; + *strength = 0; return 0; +} + +static struct dvb_frontend_ops rtl2830_ops = { + .delsys = {SYS_DVBT}, + .info = { + .name = "Realtek RTL2830 (DVB-T)", + .caps = FE_CAN_FEC_1_2 | + FE_CAN_FEC_2_3 | + FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | + FE_CAN_FEC_7_8 | + FE_CAN_FEC_AUTO | + FE_CAN_QPSK | + FE_CAN_QAM_16 | + FE_CAN_QAM_64 | + FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_HIERARCHY_AUTO | + FE_CAN_RECOVER | + FE_CAN_MUTE_TS + }, + + .init = rtl2830_init, + .sleep = rtl2830_sleep, + + .get_tune_settings = rtl2830_get_tune_settings, + + .set_frontend = rtl2830_set_frontend, + .get_frontend = rtl2830_get_frontend, + + .read_status = rtl2830_read_status, + .read_snr = rtl2830_read_snr, + .read_ber = rtl2830_read_ber, + .read_ucblocks = rtl2830_read_ucblocks, + .read_signal_strength = rtl2830_read_signal_strength, +}; + +static void rtl2830_stat_work(struct work_struct *work) +{ + struct rtl2830_dev *dev = container_of(work, struct rtl2830_dev, stat_work.work); + struct i2c_client *client = dev->client; + struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; + int ret, tmp; + u8 u8tmp, buf[2]; + u16 u16tmp; + + dev_dbg(&client->dev, "\n"); + + /* signal strength */ + if (dev->fe_status & FE_HAS_SIGNAL) { + struct {signed int x:14; } s; + + /* read IF AGC */ + ret = rtl2830_bulk_read(client, 0x359, buf, 2); + if (ret) + goto err; + + u16tmp = buf[0] << 8 | buf[1] << 0; + u16tmp &= 0x3fff; /* [13:0] */ + tmp = s.x = u16tmp; /* 14-bit bin to 2 complement */ + u16tmp = clamp_val(-4 * tmp + 32767, 0x0000, 0xffff); + + dev_dbg(&client->dev, "IF AGC=%d\n", tmp); + + c->strength.stat[0].scale = FE_SCALE_RELATIVE; + c->strength.stat[0].uvalue = u16tmp; + } else { + c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* CNR */ + if (dev->fe_status & FE_HAS_VITERBI) { + unsigned hierarchy, constellation; + #define CONSTELLATION_NUM 3 + #define HIERARCHY_NUM 4 + static const u32 constant[CONSTELLATION_NUM][HIERARCHY_NUM] = { + {70705899, 70705899, 70705899, 70705899}, + {82433173, 82433173, 87483115, 94445660}, + {92888734, 92888734, 95487525, 99770748}, + }; + + ret = rtl2830_bulk_read(client, 0x33c, &u8tmp, 1); + if (ret) + goto err; + + constellation = (u8tmp >> 2) & 0x03; /* [3:2] */ + if (constellation > CONSTELLATION_NUM - 1) + goto err_schedule_delayed_work; + + hierarchy = (u8tmp >> 4) & 0x07; /* [6:4] */ + if (hierarchy > HIERARCHY_NUM - 1) + goto err_schedule_delayed_work; + + ret = rtl2830_bulk_read(client, 0x40c, buf, 2); + if (ret) + goto err; + + u16tmp = buf[0] << 8 | buf[1] << 0; + if (u16tmp) + tmp = (constant[constellation][hierarchy] - + intlog10(u16tmp)) / ((1 << 24) / 10000); + else + tmp = 0; + + dev_dbg(&client->dev, "CNR raw=%u\n", u16tmp); + + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = tmp; + } else { + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* BER */ + if (dev->fe_status & FE_HAS_LOCK) { + ret = rtl2830_bulk_read(client, 0x34e, buf, 2); + if (ret) + goto err; + + u16tmp = buf[0] << 8 | buf[1] << 0; + dev->post_bit_error += u16tmp; + dev->post_bit_count += 1000000; + + dev_dbg(&client->dev, "BER errors=%u total=1000000\n", u16tmp); + + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue = dev->post_bit_error; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue = dev->post_bit_count; + } else { + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + +err_schedule_delayed_work: + schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); + return; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); - return ret; + dev_dbg(&client->dev, "failed=%d\n", ret); } -static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber) +static int rtl2830_pid_filter_ctrl(struct dvb_frontend *fe, int onoff) { - struct rtl2830_priv *priv = fe->demodulator_priv; + struct i2c_client *client = fe->demodulator_priv; int ret; - u8 buf[2]; + u8 u8tmp; - if (priv->sleeping) - return 0; + dev_dbg(&client->dev, "onoff=%d\n", onoff); + + /* enable / disable PID filter */ + if (onoff) + u8tmp = 0x80; + else + u8tmp = 0x00; - ret = rtl2830_rd_regs(priv, 0x34e, buf, 2); + ret = rtl2830_update_bits(client, 0x061, 0x80, u8tmp); if (ret) goto err; - *ber = buf[0] << 8 | buf[1]; - return 0; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } -static int rtl2830_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +static int rtl2830_pid_filter(struct dvb_frontend *fe, u8 index, u16 pid, int onoff) { - *ucblocks = 0; - return 0; -} - -static int rtl2830_read_signal_strength(struct dvb_frontend *fe, u16 *strength) -{ - struct rtl2830_priv *priv = fe->demodulator_priv; + struct i2c_client *client = fe->demodulator_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); int ret; - u8 buf[2]; - u16 if_agc_raw, if_agc; + u8 buf[4]; - if (priv->sleeping) + dev_dbg(&client->dev, "index=%d pid=%04x onoff=%d\n", + index, pid, onoff); + + /* skip invalid PIDs (0x2000) */ + if (pid > 0x1fff || index > 32) return 0; - ret = rtl2830_rd_regs(priv, 0x359, buf, 2); + if (onoff) + set_bit(index, &dev->filters); + else + clear_bit(index, &dev->filters); + + /* enable / disable PIDs */ + buf[0] = (dev->filters >> 0) & 0xff; + buf[1] = (dev->filters >> 8) & 0xff; + buf[2] = (dev->filters >> 16) & 0xff; + buf[3] = (dev->filters >> 24) & 0xff; + ret = rtl2830_bulk_write(client, 0x062, buf, 4); if (ret) goto err; - if_agc_raw = (buf[0] << 8 | buf[1]) & 0x3fff; - - if (if_agc_raw & (1 << 9)) - if_agc = -(~(if_agc_raw - 1) & 0x1ff); - else - if_agc = if_agc_raw; - - *strength = (u8) (55 - if_agc / 182); - *strength |= *strength << 8; + /* add PID */ + buf[0] = (pid >> 8) & 0xff; + buf[1] = (pid >> 0) & 0xff; + ret = rtl2830_bulk_write(client, 0x066 + 2 * index, buf, 2); + if (ret) + goto err; return 0; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } -static struct dvb_frontend_ops rtl2830_ops; - -static u32 rtl2830_tuner_i2c_func(struct i2c_adapter *adapter) -{ - return I2C_FUNC_I2C; -} - -static int rtl2830_tuner_i2c_xfer(struct i2c_adapter *i2c_adap, - struct i2c_msg msg[], int num) +/* + * I2C gate/mux/repeater logic + * We must use unlocked __i2c_transfer() here (through regmap) because of I2C + * adapter lock is already taken by tuner driver. + * Gate is closed automatically after single I2C transfer. + */ +static int rtl2830_select(struct i2c_adapter *adap, void *mux_priv, u32 chan_id) { - struct rtl2830_priv *priv = i2c_get_adapdata(i2c_adap); + struct i2c_client *client = mux_priv; + struct rtl2830_dev *dev = i2c_get_clientdata(client); int ret; - /* open i2c-gate */ - ret = rtl2830_wr_reg_mask(priv, 0x101, 0x08, 0x08); + dev_dbg(&client->dev, "\n"); + + /* open I2C repeater for 1 transfer, closes automatically */ + /* XXX: regmap_update_bits() does not lock I2C adapter */ + ret = regmap_update_bits(dev->regmap, 0x101, 0x08, 0x08); if (ret) goto err; - ret = i2c_transfer(priv->i2c, msg, num); - if (ret < 0) - dev_warn(&priv->i2c->dev, "%s: tuner i2c failed=%d\n", - KBUILD_MODNAME, ret); - - return ret; + return 0; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } -static struct i2c_algorithm rtl2830_tuner_i2c_algo = { - .master_xfer = rtl2830_tuner_i2c_xfer, - .functionality = rtl2830_tuner_i2c_func, -}; +static struct dvb_frontend *rtl2830_get_dvb_frontend(struct i2c_client *client) +{ + struct rtl2830_dev *dev = i2c_get_clientdata(client); -struct i2c_adapter *rtl2830_get_tuner_i2c_adapter(struct dvb_frontend *fe) + dev_dbg(&client->dev, "\n"); + + return &dev->fe; +} + +static struct i2c_adapter *rtl2830_get_i2c_adapter(struct i2c_client *client) { - struct rtl2830_priv *priv = fe->demodulator_priv; - return &priv->tuner_i2c_adapter; + struct rtl2830_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + return dev->adapter; } -EXPORT_SYMBOL(rtl2830_get_tuner_i2c_adapter); -static void rtl2830_release(struct dvb_frontend *fe) +/* + * We implement own I2C access routines for regmap in order to get manual access + * to I2C adapter lock, which is needed for I2C mux adapter. + */ +static int rtl2830_regmap_read(void *context, const void *reg_buf, + size_t reg_size, void *val_buf, size_t val_size) { - struct rtl2830_priv *priv = fe->demodulator_priv; + struct i2c_client *client = context; + int ret; + struct i2c_msg msg[2] = { + { + .addr = client->addr, + .flags = 0, + .len = reg_size, + .buf = (u8 *)reg_buf, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = val_size, + .buf = val_buf, + } + }; - i2c_del_adapter(&priv->tuner_i2c_adapter); - kfree(priv); + ret = __i2c_transfer(client->adapter, msg, 2); + if (ret != 2) { + dev_warn(&client->dev, "i2c reg read failed %d\n", ret); + if (ret >= 0) + ret = -EREMOTEIO; + return ret; + } + return 0; } -struct dvb_frontend *rtl2830_attach(const struct rtl2830_config *cfg, - struct i2c_adapter *i2c) +static int rtl2830_regmap_write(void *context, const void *data, size_t count) { - struct rtl2830_priv *priv = NULL; - int ret = 0; - u8 tmp; + struct i2c_client *client = context; + int ret; + struct i2c_msg msg[1] = { + { + .addr = client->addr, + .flags = 0, + .len = count, + .buf = (u8 *)data, + } + }; + + ret = __i2c_transfer(client->adapter, msg, 1); + if (ret != 1) { + dev_warn(&client->dev, "i2c reg write failed %d\n", ret); + if (ret >= 0) + ret = -EREMOTEIO; + return ret; + } + return 0; +} + +static int rtl2830_regmap_gather_write(void *context, const void *reg, + size_t reg_len, const void *val, + size_t val_len) +{ + struct i2c_client *client = context; + int ret; + u8 buf[256]; + struct i2c_msg msg[1] = { + { + .addr = client->addr, + .flags = 0, + .len = 1 + val_len, + .buf = buf, + } + }; + + buf[0] = *(u8 const *)reg; + memcpy(&buf[1], val, val_len); + + ret = __i2c_transfer(client->adapter, msg, 1); + if (ret != 1) { + dev_warn(&client->dev, "i2c reg write failed %d\n", ret); + if (ret >= 0) + ret = -EREMOTEIO; + return ret; + } + return 0; +} + +static int rtl2830_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct rtl2830_platform_data *pdata = client->dev.platform_data; + struct rtl2830_dev *dev; + int ret; + u8 u8tmp; + static const struct regmap_bus regmap_bus = { + .read = rtl2830_regmap_read, + .write = rtl2830_regmap_write, + .gather_write = rtl2830_regmap_gather_write, + .val_format_endian_default = REGMAP_ENDIAN_NATIVE, + }; + static const struct regmap_range_cfg regmap_range_cfg[] = { + { + .selector_reg = 0x00, + .selector_mask = 0xff, + .selector_shift = 0, + .window_start = 0, + .window_len = 0x100, + .range_min = 0 * 0x100, + .range_max = 5 * 0x100, + }, + }; + static const struct regmap_config regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 5 * 0x100, + .ranges = regmap_range_cfg, + .num_ranges = ARRAY_SIZE(regmap_range_cfg), + }; + + dev_dbg(&client->dev, "\n"); + + if (pdata == NULL) { + ret = -EINVAL; + goto err; + } /* allocate memory for the internal state */ - priv = kzalloc(sizeof(struct rtl2830_priv), GFP_KERNEL); - if (priv == NULL) + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (dev == NULL) { + ret = -ENOMEM; goto err; + } - /* setup the priv */ - priv->i2c = i2c; - memcpy(&priv->cfg, cfg, sizeof(struct rtl2830_config)); + /* setup the state */ + i2c_set_clientdata(client, dev); + dev->client = client; + dev->pdata = client->dev.platform_data; + dev->sleeping = true; + INIT_DELAYED_WORK(&dev->stat_work, rtl2830_stat_work); + dev->regmap = regmap_init(&client->dev, ®map_bus, client, + ®map_config); + if (IS_ERR(dev->regmap)) { + ret = PTR_ERR(dev->regmap); + goto err_kfree; + } /* check if the demod is there */ - ret = rtl2830_rd_reg(priv, 0x000, &tmp); + ret = rtl2830_bulk_read(client, 0x000, &u8tmp, 1); if (ret) - goto err; - - /* create dvb_frontend */ - memcpy(&priv->fe.ops, &rtl2830_ops, sizeof(struct dvb_frontend_ops)); - priv->fe.demodulator_priv = priv; - - /* create tuner i2c adapter */ - strlcpy(priv->tuner_i2c_adapter.name, "RTL2830 tuner I2C adapter", - sizeof(priv->tuner_i2c_adapter.name)); - priv->tuner_i2c_adapter.algo = &rtl2830_tuner_i2c_algo; - priv->tuner_i2c_adapter.algo_data = NULL; - priv->tuner_i2c_adapter.dev.parent = &i2c->dev; - i2c_set_adapdata(&priv->tuner_i2c_adapter, priv); - if (i2c_add_adapter(&priv->tuner_i2c_adapter) < 0) { - dev_err(&i2c->dev, - "%s: tuner i2c bus could not be initialized\n", - KBUILD_MODNAME); - goto err; + goto err_regmap_exit; + + /* create muxed i2c adapter for tuner */ + dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, + client, 0, 0, 0, rtl2830_select, NULL); + if (dev->adapter == NULL) { + ret = -ENODEV; + goto err_regmap_exit; } - priv->sleeping = true; + /* create dvb frontend */ + memcpy(&dev->fe.ops, &rtl2830_ops, sizeof(dev->fe.ops)); + dev->fe.demodulator_priv = client; + + /* setup callbacks */ + pdata->get_dvb_frontend = rtl2830_get_dvb_frontend; + pdata->get_i2c_adapter = rtl2830_get_i2c_adapter; + pdata->pid_filter = rtl2830_pid_filter; + pdata->pid_filter_ctrl = rtl2830_pid_filter_ctrl; - return &priv->fe; + dev_info(&client->dev, "Realtek RTL2830 successfully attached\n"); + + return 0; +err_regmap_exit: + regmap_exit(dev->regmap); +err_kfree: + kfree(dev); err: - dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret); - kfree(priv); - return NULL; + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; } -EXPORT_SYMBOL(rtl2830_attach); -static struct dvb_frontend_ops rtl2830_ops = { - .delsys = { SYS_DVBT }, - .info = { - .name = "Realtek RTL2830 (DVB-T)", - .caps = FE_CAN_FEC_1_2 | - FE_CAN_FEC_2_3 | - FE_CAN_FEC_3_4 | - FE_CAN_FEC_5_6 | - FE_CAN_FEC_7_8 | - FE_CAN_FEC_AUTO | - FE_CAN_QPSK | - FE_CAN_QAM_16 | - FE_CAN_QAM_64 | - FE_CAN_QAM_AUTO | - FE_CAN_TRANSMISSION_MODE_AUTO | - FE_CAN_GUARD_INTERVAL_AUTO | - FE_CAN_HIERARCHY_AUTO | - FE_CAN_RECOVER | - FE_CAN_MUTE_TS - }, +static int rtl2830_remove(struct i2c_client *client) +{ + struct rtl2830_dev *dev = i2c_get_clientdata(client); - .release = rtl2830_release, + dev_dbg(&client->dev, "\n"); - .init = rtl2830_init, - .sleep = rtl2830_sleep, + i2c_del_mux_adapter(dev->adapter); + regmap_exit(dev->regmap); + kfree(dev); - .get_tune_settings = rtl2830_get_tune_settings, + return 0; +} - .set_frontend = rtl2830_set_frontend, - .get_frontend = rtl2830_get_frontend, +static const struct i2c_device_id rtl2830_id_table[] = { + {"rtl2830", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, rtl2830_id_table); - .read_status = rtl2830_read_status, - .read_snr = rtl2830_read_snr, - .read_ber = rtl2830_read_ber, - .read_ucblocks = rtl2830_read_ucblocks, - .read_signal_strength = rtl2830_read_signal_strength, +static struct i2c_driver rtl2830_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "rtl2830", + }, + .probe = rtl2830_probe, + .remove = rtl2830_remove, + .id_table = rtl2830_id_table, }; +module_i2c_driver(rtl2830_driver); + MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); MODULE_DESCRIPTION("Realtek RTL2830 DVB-T demodulator driver"); MODULE_LICENSE("GPL"); |