diff options
author | Antti Palosaari <crope@iki.fi> | 2016-02-04 22:01:51 +0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-03-03 15:26:05 +0300 |
commit | 7908fad99a6cc08a41c666d425df42809b34dce2 (patch) | |
tree | ef02f147a33cf69b9b8cf027e178b51805b64f74 /drivers/media | |
parent | 877ba50b057f53b761c7acab6f4ae5376513b34f (diff) | |
download | linux-7908fad99a6cc08a41c666d425df42809b34dce2.tar.xz |
[media] mn88473: finalize driver
Finalize the driver.
It still lacks a lot of features, like all statistics and PLP
filtering, but basic functionality and sensitivity is pretty good
shape.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Benjamin Larsson <benjamin@southpole.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media')
-rw-r--r-- | drivers/media/dvb-frontends/mn88473.c | 388 | ||||
-rw-r--r-- | drivers/media/dvb-frontends/mn88473.h | 14 | ||||
-rw-r--r-- | drivers/media/dvb-frontends/mn88473_priv.h | 7 |
3 files changed, 246 insertions, 163 deletions
diff --git a/drivers/media/dvb-frontends/mn88473.c b/drivers/media/dvb-frontends/mn88473.c index a222e99935d2..6c5d592161d4 100644 --- a/drivers/media/dvb-frontends/mn88473.c +++ b/drivers/media/dvb-frontends/mn88473.c @@ -29,21 +29,17 @@ static int mn88473_set_frontend(struct dvb_frontend *fe) struct mn88473_dev *dev = i2c_get_clientdata(client); struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret, i; + unsigned int uitmp; u32 if_frequency; - u64 tmp; - u8 delivery_system_val, if_val[3], bw_val[7]; + u8 delivery_system_val, if_val[3], *conf_val_ptr; + u8 reg_bank2_2d_val, reg_bank0_d2_val; dev_dbg(&client->dev, "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n", - c->delivery_system, - c->modulation, - c->frequency, - c->bandwidth_hz, - c->symbol_rate, - c->inversion, - c->stream_id); - - if (!dev->warm) { + c->delivery_system, c->modulation, c->frequency, + c->bandwidth_hz, c->symbol_rate, c->inversion, c->stream_id); + + if (!dev->active) { ret = -EAGAIN; goto err; } @@ -51,30 +47,50 @@ static int mn88473_set_frontend(struct dvb_frontend *fe) switch (c->delivery_system) { case SYS_DVBT: delivery_system_val = 0x02; + reg_bank2_2d_val = 0x23; + reg_bank0_d2_val = 0x2a; break; case SYS_DVBT2: delivery_system_val = 0x03; + reg_bank2_2d_val = 0x3b; + reg_bank0_d2_val = 0x29; break; case SYS_DVBC_ANNEX_A: delivery_system_val = 0x04; + reg_bank2_2d_val = 0x3b; + reg_bank0_d2_val = 0x29; break; default: ret = -EINVAL; goto err; } - if (c->bandwidth_hz <= 6000000) { - memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7); - } else if (c->bandwidth_hz <= 7000000) { - memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7); - } else if (c->bandwidth_hz <= 8000000) { - memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7); - } else { - ret = -EINVAL; - goto err; + switch (c->delivery_system) { + case SYS_DVBT: + case SYS_DVBT2: + switch (c->bandwidth_hz) { + case 6000000: + conf_val_ptr = "\xe9\x55\x55\x1c\x29\x1c\x29"; + break; + case 7000000: + conf_val_ptr = "\xc8\x00\x00\x17\x0a\x17\x0a"; + break; + case 8000000: + conf_val_ptr = "\xaf\x00\x00\x11\xec\x11\xec"; + break; + default: + ret = -EINVAL; + goto err; + } + break; + case SYS_DVBC_ANNEX_A: + conf_val_ptr = "\x10\xab\x0d\xae\x1d\x9d"; + break; + default: + break; } - /* program tuner */ + /* Program tuner */ if (fe->ops.tuner_ops.set_params) { ret = fe->ops.tuner_ops.set_params(fe); if (ret) @@ -86,27 +102,45 @@ static int mn88473_set_frontend(struct dvb_frontend *fe) if (ret) goto err; - dev_dbg(&client->dev, "get_if_frequency=%d\n", if_frequency); + dev_dbg(&client->dev, "get_if_frequency=%u\n", if_frequency); } else { - if_frequency = 0; + ret = -EINVAL; + goto err; } - /* Calculate IF registers ( (1<<24)*IF / Xtal ) */ - tmp = div_u64(if_frequency * (u64)(1<<24) + (dev->xtal / 2), - dev->xtal); - if_val[0] = ((tmp >> 16) & 0xff); - if_val[1] = ((tmp >> 8) & 0xff); - if_val[2] = ((tmp >> 0) & 0xff); + /* Calculate IF registers */ + uitmp = DIV_ROUND_CLOSEST_ULL((u64) if_frequency * 0x1000000, dev->clk); + if_val[0] = (uitmp >> 16) & 0xff; + if_val[1] = (uitmp >> 8) & 0xff; + if_val[2] = (uitmp >> 0) & 0xff; ret = regmap_write(dev->regmap[2], 0x05, 0x00); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0xfb, 0x13); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0xef, 0x13); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0xf9, 0x13); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0x00, 0x18); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0x01, 0x01); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0x02, 0x21); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0x0b, 0x00); + if (ret) + goto err; for (i = 0; i < sizeof(if_val); i++) { ret = regmap_write(dev->regmap[2], 0x10 + i, if_val[i]); @@ -114,52 +148,85 @@ static int mn88473_set_frontend(struct dvb_frontend *fe) goto err; } - for (i = 0; i < sizeof(bw_val); i++) { - ret = regmap_write(dev->regmap[2], 0x13 + i, bw_val[i]); + switch (c->delivery_system) { + case SYS_DVBT: + case SYS_DVBT2: + for (i = 0; i < 7; i++) { + ret = regmap_write(dev->regmap[2], 0x13 + i, + conf_val_ptr[i]); + if (ret) + goto err; + } + break; + case SYS_DVBC_ANNEX_A: + ret = regmap_bulk_write(dev->regmap[1], 0x10, conf_val_ptr, 6); if (ret) goto err; + break; + default: + break; } - ret = regmap_write(dev->regmap[2], 0x2d, 0x3b); + ret = regmap_write(dev->regmap[2], 0x2d, reg_bank2_2d_val); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0x2e, 0x00); + if (ret) + goto err; ret = regmap_write(dev->regmap[2], 0x56, 0x0d); - ret = regmap_write(dev->regmap[0], 0x01, 0xba); - ret = regmap_write(dev->regmap[0], 0x02, 0x13); - ret = regmap_write(dev->regmap[0], 0x03, 0x80); - ret = regmap_write(dev->regmap[0], 0x04, 0xba); - ret = regmap_write(dev->regmap[0], 0x05, 0x91); - ret = regmap_write(dev->regmap[0], 0x07, 0xe7); - ret = regmap_write(dev->regmap[0], 0x08, 0x28); + if (ret) + goto err; + ret = regmap_bulk_write(dev->regmap[0], 0x01, + "\xba\x13\x80\xba\x91\xdd\xe7\x28", 8); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x0a, 0x1a); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x13, 0x1f); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x19, 0x03); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x1d, 0xb0); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x2a, 0x72); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x2d, 0x00); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x3c, 0x00); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0x3f, 0xf8); - ret = regmap_write(dev->regmap[0], 0x40, 0xf4); - ret = regmap_write(dev->regmap[0], 0x41, 0x08); - ret = regmap_write(dev->regmap[0], 0xd2, 0x29); + if (ret) + goto err; + ret = regmap_bulk_write(dev->regmap[0], 0x40, "\xf4\x08", 2); + if (ret) + goto err; + ret = regmap_write(dev->regmap[0], 0xd2, reg_bank0_d2_val); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0xd4, 0x55); - ret = regmap_write(dev->regmap[1], 0x10, 0x10); - ret = regmap_write(dev->regmap[1], 0x11, 0xab); - ret = regmap_write(dev->regmap[1], 0x12, 0x0d); - ret = regmap_write(dev->regmap[1], 0x13, 0xae); - ret = regmap_write(dev->regmap[1], 0x14, 0x1d); - ret = regmap_write(dev->regmap[1], 0x15, 0x9d); + if (ret) + goto err; ret = regmap_write(dev->regmap[1], 0xbe, 0x08); - ret = regmap_write(dev->regmap[2], 0x09, 0x08); - ret = regmap_write(dev->regmap[2], 0x08, 0x1d); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0xb2, 0x37); + if (ret) + goto err; ret = regmap_write(dev->regmap[0], 0xd7, 0x04); - ret = regmap_write(dev->regmap[2], 0x32, 0x80); - ret = regmap_write(dev->regmap[2], 0x36, 0x00); - ret = regmap_write(dev->regmap[2], 0xf8, 0x9f); if (ret) goto err; - dev->delivery_system = c->delivery_system; + /* Reset FSM */ + ret = regmap_write(dev->regmap[2], 0xf8, 0x9f); + if (ret) + goto err; return 0; err: @@ -173,51 +240,61 @@ static int mn88473_read_status(struct dvb_frontend *fe, enum fe_status *status) struct mn88473_dev *dev = i2c_get_clientdata(client); struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret; - unsigned int utmp; - int lock = 0; - - *status = 0; + unsigned int uitmp; - if (!dev->warm) { + if (!dev->active) { ret = -EAGAIN; goto err; } + *status = 0; + switch (c->delivery_system) { case SYS_DVBT: - ret = regmap_read(dev->regmap[0], 0x62, &utmp); + ret = regmap_read(dev->regmap[0], 0x62, &uitmp); if (ret) goto err; - if (!(utmp & 0xA0)) { - if ((utmp & 0xF) >= 0x03) - *status |= FE_HAS_SIGNAL; - if ((utmp & 0xF) >= 0x09) - lock = 1; + + if (!(uitmp & 0xa0)) { + if ((uitmp & 0x0f) >= 0x09) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | + FE_HAS_LOCK; + else if ((uitmp & 0x0f) >= 0x03) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; } break; case SYS_DVBT2: - ret = regmap_read(dev->regmap[2], 0x8B, &utmp); + ret = regmap_read(dev->regmap[2], 0x8b, &uitmp); if (ret) goto err; - if (!(utmp & 0x40)) { - if ((utmp & 0xF) >= 0x07) - *status |= FE_HAS_SIGNAL; - if ((utmp & 0xF) >= 0x0a) - *status |= FE_HAS_CARRIER; - if ((utmp & 0xF) >= 0x0d) - *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; + + if (!(uitmp & 0x40)) { + if ((uitmp & 0x0f) >= 0x0d) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | + FE_HAS_LOCK; + else if ((uitmp & 0x0f) >= 0x0a) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI; + else if ((uitmp & 0x0f) >= 0x07) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; } break; case SYS_DVBC_ANNEX_A: - ret = regmap_read(dev->regmap[1], 0x85, &utmp); + ret = regmap_read(dev->regmap[1], 0x85, &uitmp); if (ret) goto err; - if (!(utmp & 0x40)) { - ret = regmap_read(dev->regmap[1], 0x89, &utmp); + + if (!(uitmp & 0x40)) { + ret = regmap_read(dev->regmap[1], 0x89, &uitmp); if (ret) goto err; - if (utmp & 0x01) - lock = 1; + + if (uitmp & 0x01) + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI | FE_HAS_SYNC | + FE_HAS_LOCK; } break; default: @@ -225,10 +302,6 @@ static int mn88473_read_status(struct dvb_frontend *fe, enum fe_status *status) goto err; } - if (lock) - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | - FE_HAS_SYNC | FE_HAS_LOCK; - return 0; err: dev_dbg(&client->dev, "failed=%d\n", ret); @@ -239,85 +312,76 @@ static int mn88473_init(struct dvb_frontend *fe) { struct i2c_client *client = fe->demodulator_priv; struct mn88473_dev *dev = i2c_get_clientdata(client); - int ret, len, remaining; - const struct firmware *fw = NULL; - u8 *fw_file = MN88473_FIRMWARE; - unsigned int tmp; + int ret, len, remain; + unsigned int uitmp; + const struct firmware *fw; + const char *name = MN88473_FIRMWARE; dev_dbg(&client->dev, "\n"); - /* set cold state by default */ - dev->warm = false; - - /* check if firmware is already running */ - ret = regmap_read(dev->regmap[0], 0xf5, &tmp); + /* Check if firmware is already running */ + ret = regmap_read(dev->regmap[0], 0xf5, &uitmp); if (ret) goto err; - if (!(tmp & 0x1)) { - dev_info(&client->dev, "firmware already running\n"); - dev->warm = true; - return 0; - } + if (!(uitmp & 0x01)) + goto warm; - /* request the firmware, this will block and timeout */ - ret = request_firmware(&fw, fw_file, &client->dev); + /* Request the firmware, this will block and timeout */ + ret = request_firmware(&fw, name, &client->dev); if (ret) { - dev_err(&client->dev, "firmare file '%s' not found\n", fw_file); - goto err_request_firmware; + dev_err(&client->dev, "firmare file '%s' not found\n", name); + goto err; } - dev_info(&client->dev, "downloading firmware from file '%s'\n", - fw_file); + dev_info(&client->dev, "downloading firmware from file '%s'\n", name); ret = regmap_write(dev->regmap[0], 0xf5, 0x03); if (ret) - goto err; - - for (remaining = fw->size; remaining > 0; - remaining -= (dev->i2c_wr_max - 1)) { - len = remaining; - if (len > (dev->i2c_wr_max - 1)) - len = dev->i2c_wr_max - 1; + goto err_release_firmware; + for (remain = fw->size; remain > 0; remain -= (dev->i2c_wr_max - 1)) { + len = min(dev->i2c_wr_max - 1, remain); ret = regmap_bulk_write(dev->regmap[0], 0xf6, - &fw->data[fw->size - remaining], len); + &fw->data[fw->size - remain], len); if (ret) { - dev_err(&client->dev, "firmware download failed=%d\n", + dev_err(&client->dev, "firmware download failed %d\n", ret); - goto err; + goto err_release_firmware; } } - /* parity check of firmware */ - ret = regmap_read(dev->regmap[0], 0xf8, &tmp); - if (ret) { - dev_err(&client->dev, - "parity reg read failed=%d\n", ret); + release_firmware(fw); + + /* Parity check of firmware */ + ret = regmap_read(dev->regmap[0], 0xf8, &uitmp); + if (ret) goto err; - } - if (tmp & 0x10) { - dev_err(&client->dev, - "firmware parity check failed=0x%x\n", tmp); + + if (uitmp & 0x10) { + dev_err(&client->dev, "firmware parity check failed\n"); + ret = -EINVAL; goto err; } - dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp); ret = regmap_write(dev->regmap[0], 0xf5, 0x00); if (ret) goto err; +warm: + /* TS config */ + ret = regmap_write(dev->regmap[2], 0x09, 0x08); + if (ret) + goto err; + ret = regmap_write(dev->regmap[2], 0x08, 0x1d); + if (ret) + goto err; - release_firmware(fw); - fw = NULL; - - /* warm state */ - dev->warm = true; + dev->active = true; return 0; - -err: +err_release_firmware: release_firmware(fw); -err_request_firmware: +err: dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } @@ -330,20 +394,20 @@ static int mn88473_sleep(struct dvb_frontend *fe) dev_dbg(&client->dev, "\n"); + dev->active = false; + ret = regmap_write(dev->regmap[2], 0x05, 0x3e); if (ret) goto err; - dev->delivery_system = SYS_UNDEFINED; - return 0; err: dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } -static struct dvb_frontend_ops mn88473_ops = { - .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC}, +static const struct dvb_frontend_ops mn88473_ops = { + .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, .info = { .name = "Panasonic MN88473", .symbol_rate_min = 1000000, @@ -365,8 +429,7 @@ static struct dvb_frontend_ops mn88473_ops = { FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO | FE_CAN_MUTE_TS | - FE_CAN_2G_MODULATION | - FE_CAN_MULTISTREAM + FE_CAN_2G_MODULATION }, .get_tune_settings = mn88473_get_tune_settings, @@ -385,7 +448,7 @@ static int mn88473_probe(struct i2c_client *client, struct mn88473_config *config = client->dev.platform_data; struct mn88473_dev *dev; int ret; - unsigned int utmp; + unsigned int uitmp; static const struct regmap_config regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -393,7 +456,7 @@ static int mn88473_probe(struct i2c_client *client, dev_dbg(&client->dev, "\n"); - /* Caller really need to provide pointer for frontend we create. */ + /* Caller really need to provide pointer for frontend we create */ if (config->fe == NULL) { dev_err(&client->dev, "frontend pointer not defined\n"); ret = -EINVAL; @@ -406,11 +469,15 @@ static int mn88473_probe(struct i2c_client *client, goto err; } - dev->i2c_wr_max = config->i2c_wr_max; - if (!config->xtal) - dev->xtal = 25000000; + if (config->i2c_wr_max) + dev->i2c_wr_max = config->i2c_wr_max; else - dev->xtal = config->xtal; + dev->i2c_wr_max = ~0; + + if (config->xtal) + dev->clk = config->xtal; + else + dev->clk = 25000000; dev->client[0] = client; dev->regmap[0] = regmap_init_i2c(dev->client[0], ®map_config); if (IS_ERR(dev->regmap[0])) { @@ -418,15 +485,25 @@ static int mn88473_probe(struct i2c_client *client, goto err_kfree; } - /* check demod answers to I2C */ - ret = regmap_read(dev->regmap[0], 0x00, &utmp); + /* Check demod answers with correct chip id */ + ret = regmap_read(dev->regmap[0], 0xff, &uitmp); if (ret) goto err_regmap_0_regmap_exit; + dev_dbg(&client->dev, "chip id=%02x\n", uitmp); + + if (uitmp != 0x03) { + ret = -ENODEV; + goto err_regmap_0_regmap_exit; + } + /* - * Chip has three I2C addresses for different register pages. Used + * Chip has three I2C addresses for different register banks. Used * addresses are 0x18, 0x1a and 0x1c. We register two dummy clients, - * 0x1a and 0x1c, in order to get own I2C client for each register page. + * 0x1a and 0x1c, in order to get own I2C client for each register bank. + * + * Also, register bank 2 do not support sequential I/O. Only single + * register write or read is allowed to that bank. */ dev->client[1] = i2c_new_dummy(client->adapter, 0x1a); if (dev->client[1] == NULL) { @@ -456,13 +533,19 @@ static int mn88473_probe(struct i2c_client *client, } i2c_set_clientdata(dev->client[2], dev); - /* create dvb_frontend */ - memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops)); - dev->fe.demodulator_priv = client; - *config->fe = &dev->fe; + /* Sleep because chip is active by default */ + ret = regmap_write(dev->regmap[2], 0x05, 0x3e); + if (ret) + goto err_client_2_i2c_unregister_device; + + /* Create dvb frontend */ + memcpy(&dev->frontend.ops, &mn88473_ops, sizeof(dev->frontend.ops)); + dev->frontend.demodulator_priv = client; + *config->fe = &dev->frontend; i2c_set_clientdata(client, dev); - dev_info(&dev->client[0]->dev, "Panasonic MN88473 successfully attached\n"); + dev_info(&client->dev, "Panasonic MN88473 successfully identified\n"); + return 0; err_client_2_i2c_unregister_device: @@ -507,7 +590,8 @@ MODULE_DEVICE_TABLE(i2c, mn88473_id_table); static struct i2c_driver mn88473_driver = { .driver = { - .name = "mn88473", + .name = "mn88473", + .suppress_bind_attrs = true, }, .probe = mn88473_probe, .remove = mn88473_remove, diff --git a/drivers/media/dvb-frontends/mn88473.h b/drivers/media/dvb-frontends/mn88473.h index c717ebed0e03..2aa5181f3033 100644 --- a/drivers/media/dvb-frontends/mn88473.h +++ b/drivers/media/dvb-frontends/mn88473.h @@ -22,10 +22,16 @@ struct mn88473_config { /* * Max num of bytes given I2C adapter could write at once. - * Default: none + * Default: unlimited */ u16 i2c_wr_max; + /* + * Xtal frequency Hz. + * Default: 25000000 + */ + u32 xtal; + /* Everything after that is returned by the driver. */ @@ -33,12 +39,6 @@ struct mn88473_config { * DVB frontend. */ struct dvb_frontend **fe; - - /* - * Xtal frequency. - * Hz - */ - u32 xtal; }; #endif diff --git a/drivers/media/dvb-frontends/mn88473_priv.h b/drivers/media/dvb-frontends/mn88473_priv.h index 54beb4241ccf..e6c65893e451 100644 --- a/drivers/media/dvb-frontends/mn88473_priv.h +++ b/drivers/media/dvb-frontends/mn88473_priv.h @@ -27,11 +27,10 @@ struct mn88473_dev { struct i2c_client *client[3]; struct regmap *regmap[3]; - struct dvb_frontend fe; + struct dvb_frontend frontend; u16 i2c_wr_max; - enum fe_delivery_system delivery_system; - bool warm; /* FW running */ - u32 xtal; + bool active; + u32 clk; }; #endif |