diff options
Diffstat (limited to 'drivers/media/tuners/m88rs6000t.c')
| -rw-r--r-- | drivers/media/tuners/m88rs6000t.c | 744 |
1 files changed, 744 insertions, 0 deletions
diff --git a/drivers/media/tuners/m88rs6000t.c b/drivers/media/tuners/m88rs6000t.c new file mode 100644 index 000000000..d4c13fe6e --- /dev/null +++ b/drivers/media/tuners/m88rs6000t.c @@ -0,0 +1,744 @@ +/* + * Driver for the internal tuner of Montage M88RS6000 + * + * Copyright (C) 2014 Max nibble <nibble.max@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include "m88rs6000t.h" +#include <linux/regmap.h> + +struct m88rs6000t_dev { + struct m88rs6000t_config cfg; + struct i2c_client *client; + struct regmap *regmap; + u32 frequency_khz; +}; + +struct m88rs6000t_reg_val { + u8 reg; + u8 val; +}; + +/* set demod main mclk and ts mclk */ +static int m88rs6000t_set_demod_mclk(struct dvb_frontend *fe) +{ + struct m88rs6000t_dev *dev = fe->tuner_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + u8 reg11, reg15, reg16, reg1D, reg1E, reg1F; + u8 N, f0 = 0, f1 = 0, f2 = 0, f3 = 0; + u16 pll_div_fb; + u32 div, ts_mclk; + unsigned int utmp; + int ret; + + /* select demod main mclk */ + ret = regmap_read(dev->regmap, 0x15, &utmp); + if (ret) + goto err; + reg15 = utmp; + if (c->symbol_rate > 45010000) { + reg11 = 0x0E; + reg15 |= 0x02; + reg16 = 115; /* mclk = 110.25MHz */ + } else { + reg11 = 0x0A; + reg15 &= ~0x02; + reg16 = 96; /* mclk = 96MHz */ + } + + /* set ts mclk */ + if (c->delivery_system == SYS_DVBS) + ts_mclk = 96000; + else + ts_mclk = 144000; + + pll_div_fb = (reg15 & 0x01) << 8; + pll_div_fb += reg16; + pll_div_fb += 32; + + div = 36000 * pll_div_fb; + div /= ts_mclk; + + if (div <= 32) { + N = 2; + f0 = 0; + f1 = div / 2; + f2 = div - f1; + f3 = 0; + } else if (div <= 48) { + N = 3; + f0 = div / 3; + f1 = (div - f0) / 2; + f2 = div - f0 - f1; + f3 = 0; + } else if (div <= 64) { + N = 4; + f0 = div / 4; + f1 = (div - f0) / 3; + f2 = (div - f0 - f1) / 2; + f3 = div - f0 - f1 - f2; + } else { + N = 4; + f0 = 16; + f1 = 16; + f2 = 16; + f3 = 16; + } + + if (f0 == 16) + f0 = 0; + if (f1 == 16) + f1 = 0; + if (f2 == 16) + f2 = 0; + if (f3 == 16) + f3 = 0; + + ret = regmap_read(dev->regmap, 0x1D, &utmp); + if (ret) + goto err; + reg1D = utmp; + reg1D &= ~0x03; + reg1D |= N - 1; + reg1E = ((f3 << 4) + f2) & 0xFF; + reg1F = ((f1 << 4) + f0) & 0xFF; + + /* program and recalibrate demod PLL */ + ret = regmap_write(dev->regmap, 0x05, 0x40); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x11, 0x08); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x15, reg15); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x16, reg16); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x1D, reg1D); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x1E, reg1E); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x1F, reg1F); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x17, 0xc1); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x17, 0x81); + if (ret) + goto err; + usleep_range(5000, 50000); + ret = regmap_write(dev->regmap, 0x05, 0x00); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x11, reg11); + if (ret) + goto err; + usleep_range(5000, 50000); +err: + if (ret) + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + return ret; +} + +static int m88rs6000t_set_pll_freq(struct m88rs6000t_dev *dev, + u32 tuner_freq_MHz) +{ + u32 fcry_KHz, ulNDiv1, ulNDiv2, ulNDiv; + u8 refDiv, ucLoDiv1, ucLomod1, ucLoDiv2, ucLomod2, ucLoDiv, ucLomod; + u8 reg27, reg29, reg42, reg42buf; + unsigned int utmp; + int ret; + + fcry_KHz = 27000; /* in kHz */ + refDiv = 27; + + ret = regmap_write(dev->regmap, 0x36, (refDiv - 8)); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x31, 0x00); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x2c, 0x02); + if (ret) + goto err; + + if (tuner_freq_MHz >= 1550) { + ucLoDiv1 = 2; + ucLomod1 = 0; + ucLoDiv2 = 2; + ucLomod2 = 0; + } else if (tuner_freq_MHz >= 1380) { + ucLoDiv1 = 3; + ucLomod1 = 16; + ucLoDiv2 = 2; + ucLomod2 = 0; + } else if (tuner_freq_MHz >= 1070) { + ucLoDiv1 = 3; + ucLomod1 = 16; + ucLoDiv2 = 3; + ucLomod2 = 16; + } else if (tuner_freq_MHz >= 1000) { + ucLoDiv1 = 3; + ucLomod1 = 16; + ucLoDiv2 = 4; + ucLomod2 = 64; + } else if (tuner_freq_MHz >= 775) { + ucLoDiv1 = 4; + ucLomod1 = 64; + ucLoDiv2 = 4; + ucLomod2 = 64; + } else if (tuner_freq_MHz >= 700) { + ucLoDiv1 = 6; + ucLomod1 = 48; + ucLoDiv2 = 4; + ucLomod2 = 64; + } else if (tuner_freq_MHz >= 520) { + ucLoDiv1 = 6; + ucLomod1 = 48; + ucLoDiv2 = 6; + ucLomod2 = 48; + } else { + ucLoDiv1 = 8; + ucLomod1 = 96; + ucLoDiv2 = 8; + ucLomod2 = 96; + } + + ulNDiv1 = ((tuner_freq_MHz * ucLoDiv1 * 1000) * refDiv + / fcry_KHz - 1024) / 2; + ulNDiv2 = ((tuner_freq_MHz * ucLoDiv2 * 1000) * refDiv + / fcry_KHz - 1024) / 2; + + reg27 = (((ulNDiv1 >> 8) & 0x0F) + ucLomod1) & 0x7F; + ret = regmap_write(dev->regmap, 0x27, reg27); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x28, (u8)(ulNDiv1 & 0xFF)); + if (ret) + goto err; + reg29 = (((ulNDiv2 >> 8) & 0x0F) + ucLomod2) & 0x7f; + ret = regmap_write(dev->regmap, 0x29, reg29); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x2a, (u8)(ulNDiv2 & 0xFF)); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x2F, 0xf5); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x30, 0x05); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x08, 0x1f); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x08, 0x3f); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x09, 0x20); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x09, 0x00); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x3e, 0x11); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x08, 0x2f); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x08, 0x3f); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x09, 0x10); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x09, 0x00); + if (ret) + goto err; + usleep_range(2000, 50000); + + ret = regmap_read(dev->regmap, 0x42, &utmp); + if (ret) + goto err; + reg42 = utmp; + + ret = regmap_write(dev->regmap, 0x3e, 0x10); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x08, 0x2f); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x08, 0x3f); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x09, 0x10); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x09, 0x00); + if (ret) + goto err; + usleep_range(2000, 50000); + + ret = regmap_read(dev->regmap, 0x42, &utmp); + if (ret) + goto err; + reg42buf = utmp; + if (reg42buf < reg42) { + ret = regmap_write(dev->regmap, 0x3e, 0x11); + if (ret) + goto err; + } + usleep_range(5000, 50000); + + ret = regmap_read(dev->regmap, 0x2d, &utmp); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x2d, utmp); + if (ret) + goto err; + ret = regmap_read(dev->regmap, 0x2e, &utmp); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x2e, utmp); + if (ret) + goto err; + + ret = regmap_read(dev->regmap, 0x27, &utmp); + if (ret) + goto err; + reg27 = utmp & 0x70; + ret = regmap_read(dev->regmap, 0x83, &utmp); + if (ret) + goto err; + if (reg27 == (utmp & 0x70)) { + ucLoDiv = ucLoDiv1; + ulNDiv = ulNDiv1; + ucLomod = ucLomod1 / 16; + } else { + ucLoDiv = ucLoDiv2; + ulNDiv = ulNDiv2; + ucLomod = ucLomod2 / 16; + } + + if ((ucLoDiv == 3) || (ucLoDiv == 6)) { + refDiv = 18; + ret = regmap_write(dev->regmap, 0x36, (refDiv - 8)); + if (ret) + goto err; + ulNDiv = ((tuner_freq_MHz * ucLoDiv * 1000) * refDiv + / fcry_KHz - 1024) / 2; + } + + reg27 = (0x80 + ((ucLomod << 4) & 0x70) + + ((ulNDiv >> 8) & 0x0F)) & 0xFF; + ret = regmap_write(dev->regmap, 0x27, reg27); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x28, (u8)(ulNDiv & 0xFF)); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x29, 0x80); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x31, 0x03); + if (ret) + goto err; + + if (ucLoDiv == 3) + utmp = 0xCE; + else + utmp = 0x8A; + ret = regmap_write(dev->regmap, 0x3b, utmp); + if (ret) + goto err; + + dev->frequency_khz = fcry_KHz * (ulNDiv * 2 + 1024) / refDiv / ucLoDiv; + + dev_dbg(&dev->client->dev, + "actual tune frequency=%d\n", dev->frequency_khz); +err: + if (ret) + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + return ret; +} + +static int m88rs6000t_set_bb(struct m88rs6000t_dev *dev, + u32 symbol_rate_KSs, s32 lpf_offset_KHz) +{ + u32 f3dB; + u8 reg40; + + f3dB = symbol_rate_KSs * 9 / 14 + 2000; + f3dB += lpf_offset_KHz; + f3dB = clamp_val(f3dB, 6000U, 43000U); + reg40 = f3dB / 1000; + return regmap_write(dev->regmap, 0x40, reg40); +} + +static int m88rs6000t_set_params(struct dvb_frontend *fe) +{ + struct m88rs6000t_dev *dev = fe->tuner_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret; + s32 lpf_offset_KHz; + u32 realFreq, freq_MHz; + + dev_dbg(&dev->client->dev, + "frequency=%d symbol_rate=%d\n", + c->frequency, c->symbol_rate); + + if (c->symbol_rate < 5000000) + lpf_offset_KHz = 3000; + else + lpf_offset_KHz = 0; + + realFreq = c->frequency + lpf_offset_KHz; + /* set tuner pll.*/ + freq_MHz = (realFreq + 500) / 1000; + ret = m88rs6000t_set_pll_freq(dev, freq_MHz); + if (ret) + goto err; + ret = m88rs6000t_set_bb(dev, c->symbol_rate / 1000, lpf_offset_KHz); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x00, 0x01); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x00, 0x00); + if (ret) + goto err; + /* set demod mlck */ + ret = m88rs6000t_set_demod_mclk(fe); +err: + if (ret) + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + return ret; +} + +static int m88rs6000t_init(struct dvb_frontend *fe) +{ + struct m88rs6000t_dev *dev = fe->tuner_priv; + int ret; + + dev_dbg(&dev->client->dev, "%s:\n", __func__); + + ret = regmap_update_bits(dev->regmap, 0x11, 0x08, 0x08); + if (ret) + goto err; + usleep_range(5000, 50000); + ret = regmap_update_bits(dev->regmap, 0x10, 0x01, 0x01); + if (ret) + goto err; + usleep_range(10000, 50000); + ret = regmap_write(dev->regmap, 0x07, 0x7d); +err: + if (ret) + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + return ret; +} + +static int m88rs6000t_sleep(struct dvb_frontend *fe) +{ + struct m88rs6000t_dev *dev = fe->tuner_priv; + int ret; + + dev_dbg(&dev->client->dev, "%s:\n", __func__); + + ret = regmap_write(dev->regmap, 0x07, 0x6d); + if (ret) + goto err; + usleep_range(5000, 10000); +err: + if (ret) + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + return ret; +} + +static int m88rs6000t_get_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct m88rs6000t_dev *dev = fe->tuner_priv; + + dev_dbg(&dev->client->dev, "\n"); + + *frequency = dev->frequency_khz; + return 0; +} + +static int m88rs6000t_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct m88rs6000t_dev *dev = fe->tuner_priv; + + dev_dbg(&dev->client->dev, "\n"); + + *frequency = 0; /* Zero-IF */ + return 0; +} + + +static int m88rs6000t_get_rf_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct m88rs6000t_dev *dev = fe->tuner_priv; + unsigned int val, i; + int ret; + u16 gain; + u32 PGA2_cri_GS = 46, PGA2_crf_GS = 290, TIA_GS = 290; + u32 RF_GC = 1200, IF_GC = 1100, BB_GC = 300; + u32 PGA2_GC = 300, TIA_GC = 300, PGA2_cri = 0, PGA2_crf = 0; + u32 RFG = 0, IFG = 0, BBG = 0, PGA2G = 0, TIAG = 0; + u32 RFGS[13] = {0, 245, 266, 268, 270, 285, + 298, 295, 283, 285, 285, 300, 300}; + u32 IFGS[12] = {0, 300, 230, 270, 270, 285, + 295, 285, 290, 295, 295, 310}; + u32 BBGS[14] = {0, 286, 275, 290, 294, 300, 290, + 290, 285, 283, 260, 295, 290, 260}; + + ret = regmap_read(dev->regmap, 0x5A, &val); + if (ret) + goto err; + RF_GC = val & 0x0f; + + ret = regmap_read(dev->regmap, 0x5F, &val); + if (ret) + goto err; + IF_GC = val & 0x0f; + + ret = regmap_read(dev->regmap, 0x3F, &val); + if (ret) + goto err; + TIA_GC = (val >> 4) & 0x07; + + ret = regmap_read(dev->regmap, 0x77, &val); + if (ret) + goto err; + BB_GC = (val >> 4) & 0x0f; + + ret = regmap_read(dev->regmap, 0x76, &val); + if (ret) + goto err; + PGA2_GC = val & 0x3f; + PGA2_cri = PGA2_GC >> 2; + PGA2_crf = PGA2_GC & 0x03; + + for (i = 0; i <= RF_GC; i++) + RFG += RFGS[i]; + + if (RF_GC == 0) + RFG += 400; + if (RF_GC == 1) + RFG += 300; + if (RF_GC == 2) + RFG += 200; + if (RF_GC == 3) + RFG += 100; + + for (i = 0; i <= IF_GC; i++) + IFG += IFGS[i]; + + TIAG = TIA_GC * TIA_GS; + + for (i = 0; i <= BB_GC; i++) + BBG += BBGS[i]; + + PGA2G = PGA2_cri * PGA2_cri_GS + PGA2_crf * PGA2_crf_GS; + + gain = RFG + IFG - TIAG + BBG + PGA2G; + + /* scale value to 0x0000-0xffff */ + gain = clamp_val(gain, 1000U, 10500U); + *strength = (10500 - gain) * 0xffff / (10500 - 1000); +err: + if (ret) + dev_dbg(&dev->client->dev, "failed=%d\n", ret); + return ret; +} + +static const struct dvb_tuner_ops m88rs6000t_tuner_ops = { + .info = { + .name = "Montage M88RS6000 Internal Tuner", + .frequency_min = 950000, + .frequency_max = 2150000, + }, + + .init = m88rs6000t_init, + .sleep = m88rs6000t_sleep, + .set_params = m88rs6000t_set_params, + .get_frequency = m88rs6000t_get_frequency, + .get_if_frequency = m88rs6000t_get_if_frequency, + .get_rf_strength = m88rs6000t_get_rf_strength, +}; + +static int m88rs6000t_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct m88rs6000t_config *cfg = client->dev.platform_data; + struct dvb_frontend *fe = cfg->fe; + struct m88rs6000t_dev *dev; + int ret, i; + unsigned int utmp; + static const struct regmap_config regmap_config = { + .reg_bits = 8, + .val_bits = 8, + }; + static const struct m88rs6000t_reg_val reg_vals[] = { + {0x10, 0xfb}, + {0x24, 0x38}, + {0x11, 0x0a}, + {0x12, 0x00}, + {0x2b, 0x1c}, + {0x44, 0x48}, + {0x54, 0x24}, + {0x55, 0x06}, + {0x59, 0x00}, + {0x5b, 0x4c}, + {0x60, 0x8b}, + {0x61, 0xf4}, + {0x65, 0x07}, + {0x6d, 0x6f}, + {0x6e, 0x31}, + {0x3c, 0xf3}, + {0x37, 0x0f}, + {0x48, 0x28}, + {0x49, 0xd8}, + {0x70, 0x66}, + {0x71, 0xCF}, + {0x72, 0x81}, + {0x73, 0xA7}, + {0x74, 0x4F}, + {0x75, 0xFC}, + }; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + dev_err(&client->dev, "kzalloc() failed\n"); + goto err; + } + + memcpy(&dev->cfg, cfg, sizeof(struct m88rs6000t_config)); + dev->client = client; + dev->regmap = devm_regmap_init_i2c(client, ®map_config); + if (IS_ERR(dev->regmap)) { + ret = PTR_ERR(dev->regmap); + goto err; + } + + ret = regmap_update_bits(dev->regmap, 0x11, 0x08, 0x08); + if (ret) + goto err; + usleep_range(5000, 50000); + ret = regmap_update_bits(dev->regmap, 0x10, 0x01, 0x01); + if (ret) + goto err; + usleep_range(10000, 50000); + ret = regmap_write(dev->regmap, 0x07, 0x7d); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x04, 0x01); + if (ret) + goto err; + + /* check tuner chip id */ + ret = regmap_read(dev->regmap, 0x01, &utmp); + if (ret) + goto err; + dev_info(&dev->client->dev, "chip_id=%02x\n", utmp); + if (utmp != 0x64) { + ret = -ENODEV; + goto err; + } + + /* tuner init. */ + ret = regmap_write(dev->regmap, 0x05, 0x40); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x11, 0x08); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x15, 0x6c); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x17, 0xc1); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x17, 0x81); + if (ret) + goto err; + usleep_range(10000, 50000); + ret = regmap_write(dev->regmap, 0x05, 0x00); + if (ret) + goto err; + ret = regmap_write(dev->regmap, 0x11, 0x0a); + if (ret) + goto err; + + for (i = 0; i < ARRAY_SIZE(reg_vals); i++) { + ret = regmap_write(dev->regmap, + reg_vals[i].reg, reg_vals[i].val); + if (ret) + goto err; + } + + dev_info(&dev->client->dev, "Montage M88RS6000 internal tuner successfully identified\n"); + + fe->tuner_priv = dev; + memcpy(&fe->ops.tuner_ops, &m88rs6000t_tuner_ops, + sizeof(struct dvb_tuner_ops)); + i2c_set_clientdata(client, dev); + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + kfree(dev); + return ret; +} + +static int m88rs6000t_remove(struct i2c_client *client) +{ + struct m88rs6000t_dev *dev = i2c_get_clientdata(client); + struct dvb_frontend *fe = dev->cfg.fe; + + dev_dbg(&client->dev, "\n"); + + memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops)); + fe->tuner_priv = NULL; + kfree(dev); + + return 0; +} + +static const struct i2c_device_id m88rs6000t_id[] = { + {"m88rs6000t", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, m88rs6000t_id); + +static struct i2c_driver m88rs6000t_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "m88rs6000t", + }, + .probe = m88rs6000t_probe, + .remove = m88rs6000t_remove, + .id_table = m88rs6000t_id, +}; + +module_i2c_driver(m88rs6000t_driver); + +MODULE_AUTHOR("Max nibble <nibble.max@gmail.com>"); +MODULE_DESCRIPTION("Montage M88RS6000 internal tuner driver"); +MODULE_LICENSE("GPL"); |