diff options
Diffstat (limited to 'drivers/media/tuners/m88ts2022.c')
| -rw-r--r-- | drivers/media/tuners/m88ts2022.c | 579 |
1 files changed, 0 insertions, 579 deletions
diff --git a/drivers/media/tuners/m88ts2022.c b/drivers/media/tuners/m88ts2022.c deleted file mode 100644 index 066e5431da93..000000000000 --- a/drivers/media/tuners/m88ts2022.c +++ /dev/null @@ -1,579 +0,0 @@ -/* - * Montage M88TS2022 silicon tuner driver - * - * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> - * - * 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. - * - * Some calculations are taken from existing TS2020 driver. - */ - -#include "m88ts2022_priv.h" - -static int m88ts2022_cmd(struct m88ts2022_dev *dev, int op, int sleep, u8 reg, - u8 mask, u8 val, u8 *reg_val) -{ - int ret, i; - unsigned int utmp; - struct m88ts2022_reg_val reg_vals[] = { - {0x51, 0x1f - op}, - {0x51, 0x1f}, - {0x50, 0x00 + op}, - {0x50, 0x00}, - }; - - for (i = 0; i < 2; i++) { - dev_dbg(&dev->client->dev, - "i=%d op=%02x reg=%02x mask=%02x val=%02x\n", - i, op, reg, mask, val); - - 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; - } - - usleep_range(sleep * 1000, sleep * 10000); - - ret = regmap_read(dev->regmap, reg, &utmp); - if (ret) - goto err; - - if ((utmp & mask) != val) - break; - } - - if (reg_val) - *reg_val = utmp; -err: - return ret; -} - -static int m88ts2022_set_params(struct dvb_frontend *fe) -{ - struct m88ts2022_dev *dev = fe->tuner_priv; - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - int ret; - unsigned int utmp, frequency_khz, frequency_offset_khz, f_3db_hz; - unsigned int f_ref_khz, f_vco_khz, div_ref, div_out, pll_n, gdiv28; - u8 buf[3], u8tmp, cap_code, lpf_gm, lpf_mxdiv, div_max, div_min; - u16 u16tmp; - - dev_dbg(&dev->client->dev, - "frequency=%d symbol_rate=%d rolloff=%d\n", - c->frequency, c->symbol_rate, c->rolloff); - /* - * Integer-N PLL synthesizer - * kHz is used for all calculations to keep calculations within 32-bit - */ - f_ref_khz = DIV_ROUND_CLOSEST(dev->cfg.clock, 1000); - div_ref = DIV_ROUND_CLOSEST(f_ref_khz, 2000); - - if (c->symbol_rate < 5000000) - frequency_offset_khz = 3000; /* 3 MHz */ - else - frequency_offset_khz = 0; - - frequency_khz = c->frequency + frequency_offset_khz; - - if (frequency_khz < 1103000) { - div_out = 4; - u8tmp = 0x1b; - } else { - div_out = 2; - u8tmp = 0x0b; - } - - buf[0] = u8tmp; - buf[1] = 0x40; - ret = regmap_bulk_write(dev->regmap, 0x10, buf, 2); - if (ret) - goto err; - - f_vco_khz = frequency_khz * div_out; - pll_n = f_vco_khz * div_ref / f_ref_khz; - pll_n += pll_n % 2; - dev->frequency_khz = pll_n * f_ref_khz / div_ref / div_out; - - if (pll_n < 4095) - u16tmp = pll_n - 1024; - else if (pll_n < 6143) - u16tmp = pll_n + 1024; - else - u16tmp = pll_n + 3072; - - buf[0] = (u16tmp >> 8) & 0x3f; - buf[1] = (u16tmp >> 0) & 0xff; - buf[2] = div_ref - 8; - ret = regmap_bulk_write(dev->regmap, 0x01, buf, 3); - if (ret) - goto err; - - dev_dbg(&dev->client->dev, - "frequency=%u offset=%d f_vco_khz=%u pll_n=%u div_ref=%u div_out=%u\n", - dev->frequency_khz, dev->frequency_khz - c->frequency, - f_vco_khz, pll_n, div_ref, div_out); - - ret = m88ts2022_cmd(dev, 0x10, 5, 0x15, 0x40, 0x00, NULL); - if (ret) - goto err; - - ret = regmap_read(dev->regmap, 0x14, &utmp); - if (ret) - goto err; - - utmp &= 0x7f; - if (utmp < 64) { - ret = regmap_update_bits(dev->regmap, 0x10, 0x80, 0x80); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x11, 0x6f); - if (ret) - goto err; - - ret = m88ts2022_cmd(dev, 0x10, 5, 0x15, 0x40, 0x00, NULL); - if (ret) - goto err; - } - - ret = regmap_read(dev->regmap, 0x14, &utmp); - if (ret) - goto err; - - utmp &= 0x1f; - if (utmp > 19) { - ret = regmap_update_bits(dev->regmap, 0x10, 0x02, 0x00); - if (ret) - goto err; - } - - ret = m88ts2022_cmd(dev, 0x08, 5, 0x3c, 0xff, 0x00, NULL); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x25, 0x00); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x27, 0x70); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x41, 0x09); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x08, 0x0b); - if (ret) - goto err; - - /* filters */ - gdiv28 = DIV_ROUND_CLOSEST(f_ref_khz * 1694U, 1000000U); - - ret = regmap_write(dev->regmap, 0x04, gdiv28); - if (ret) - goto err; - - ret = m88ts2022_cmd(dev, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); - if (ret) - goto err; - - cap_code = u8tmp & 0x3f; - - ret = regmap_write(dev->regmap, 0x41, 0x0d); - if (ret) - goto err; - - ret = m88ts2022_cmd(dev, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); - if (ret) - goto err; - - u8tmp &= 0x3f; - cap_code = (cap_code + u8tmp) / 2; - gdiv28 = gdiv28 * 207 / (cap_code * 2 + 151); - div_max = gdiv28 * 135 / 100; - div_min = gdiv28 * 78 / 100; - div_max = clamp_val(div_max, 0U, 63U); - - f_3db_hz = mult_frac(c->symbol_rate, 135, 200); - f_3db_hz += 2000000U + (frequency_offset_khz * 1000U); - f_3db_hz = clamp(f_3db_hz, 7000000U, 40000000U); - -#define LPF_COEFF 3200U - lpf_gm = DIV_ROUND_CLOSEST(f_3db_hz * gdiv28, LPF_COEFF * f_ref_khz); - lpf_gm = clamp_val(lpf_gm, 1U, 23U); - - lpf_mxdiv = DIV_ROUND_CLOSEST(lpf_gm * LPF_COEFF * f_ref_khz, f_3db_hz); - if (lpf_mxdiv < div_min) - lpf_mxdiv = DIV_ROUND_CLOSEST(++lpf_gm * LPF_COEFF * f_ref_khz, f_3db_hz); - lpf_mxdiv = clamp_val(lpf_mxdiv, 0U, div_max); - - ret = regmap_write(dev->regmap, 0x04, lpf_mxdiv); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x06, lpf_gm); - if (ret) - goto err; - - ret = m88ts2022_cmd(dev, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); - if (ret) - goto err; - - cap_code = u8tmp & 0x3f; - - ret = regmap_write(dev->regmap, 0x41, 0x09); - if (ret) - goto err; - - ret = m88ts2022_cmd(dev, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); - if (ret) - goto err; - - u8tmp &= 0x3f; - cap_code = (cap_code + u8tmp) / 2; - - u8tmp = cap_code | 0x80; - ret = regmap_write(dev->regmap, 0x25, u8tmp); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x27, 0x30); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x08, 0x09); - if (ret) - goto err; - - ret = m88ts2022_cmd(dev, 0x01, 20, 0x21, 0xff, 0x00, NULL); - if (ret) - goto err; -err: - if (ret) - dev_dbg(&dev->client->dev, "failed=%d\n", ret); - - return ret; -} - -static int m88ts2022_init(struct dvb_frontend *fe) -{ - struct m88ts2022_dev *dev = fe->tuner_priv; - int ret, i; - u8 u8tmp; - static const struct m88ts2022_reg_val reg_vals[] = { - {0x7d, 0x9d}, - {0x7c, 0x9a}, - {0x7a, 0x76}, - {0x3b, 0x01}, - {0x63, 0x88}, - {0x61, 0x85}, - {0x22, 0x30}, - {0x30, 0x40}, - {0x20, 0x23}, - {0x24, 0x02}, - {0x12, 0xa0}, - }; - - dev_dbg(&dev->client->dev, "\n"); - - ret = regmap_write(dev->regmap, 0x00, 0x01); - if (ret) - goto err; - - ret = regmap_write(dev->regmap, 0x00, 0x03); - if (ret) - goto err; - - switch (dev->cfg.clock_out) { - case M88TS2022_CLOCK_OUT_DISABLED: - u8tmp = 0x60; - break; - case M88TS2022_CLOCK_OUT_ENABLED: - u8tmp = 0x70; - ret = regmap_write(dev->regmap, 0x05, dev->cfg.clock_out_div); - if (ret) - goto err; - break; - case M88TS2022_CLOCK_OUT_ENABLED_XTALOUT: - u8tmp = 0x6c; - break; - default: - goto err; - } - - ret = regmap_write(dev->regmap, 0x42, u8tmp); - if (ret) - goto err; - - if (dev->cfg.loop_through) - u8tmp = 0xec; - else - u8tmp = 0x6c; - - ret = regmap_write(dev->regmap, 0x62, u8tmp); - 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; - } -err: - if (ret) - dev_dbg(&dev->client->dev, "failed=%d\n", ret); - return ret; -} - -static int m88ts2022_sleep(struct dvb_frontend *fe) -{ - struct m88ts2022_dev *dev = fe->tuner_priv; - int ret; - - dev_dbg(&dev->client->dev, "\n"); - - ret = regmap_write(dev->regmap, 0x00, 0x00); - if (ret) - goto err; -err: - if (ret) - dev_dbg(&dev->client->dev, "failed=%d\n", ret); - return ret; -} - -static int m88ts2022_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct m88ts2022_dev *dev = fe->tuner_priv; - - dev_dbg(&dev->client->dev, "\n"); - - *frequency = dev->frequency_khz; - return 0; -} - -static int m88ts2022_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct m88ts2022_dev *dev = fe->tuner_priv; - - dev_dbg(&dev->client->dev, "\n"); - - *frequency = 0; /* Zero-IF */ - return 0; -} - -static int m88ts2022_get_rf_strength(struct dvb_frontend *fe, u16 *strength) -{ - struct m88ts2022_dev *dev = fe->tuner_priv; - int ret; - u16 gain, u16tmp; - unsigned int utmp, gain1, gain2, gain3; - - ret = regmap_read(dev->regmap, 0x3d, &utmp); - if (ret) - goto err; - - gain1 = (utmp >> 0) & 0x1f; - gain1 = clamp(gain1, 0U, 15U); - - ret = regmap_read(dev->regmap, 0x21, &utmp); - if (ret) - goto err; - - gain2 = (utmp >> 0) & 0x1f; - gain2 = clamp(gain2, 2U, 16U); - - ret = regmap_read(dev->regmap, 0x66, &utmp); - if (ret) - goto err; - - gain3 = (utmp >> 3) & 0x07; - gain3 = clamp(gain3, 0U, 6U); - - gain = gain1 * 265 + gain2 * 338 + gain3 * 285; - - /* scale value to 0x0000-0xffff */ - u16tmp = (0xffff - gain); - u16tmp = clamp_val(u16tmp, 59000U, 61500U); - - *strength = (u16tmp - 59000) * 0xffff / (61500 - 59000); -err: - if (ret) - dev_dbg(&dev->client->dev, "failed=%d\n", ret); - return ret; -} - -static const struct dvb_tuner_ops m88ts2022_tuner_ops = { - .info = { - .name = "Montage M88TS2022", - .frequency_min = 950000, - .frequency_max = 2150000, - }, - - .init = m88ts2022_init, - .sleep = m88ts2022_sleep, - .set_params = m88ts2022_set_params, - - .get_frequency = m88ts2022_get_frequency, - .get_if_frequency = m88ts2022_get_if_frequency, - .get_rf_strength = m88ts2022_get_rf_strength, -}; - -static int m88ts2022_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct m88ts2022_config *cfg = client->dev.platform_data; - struct dvb_frontend *fe = cfg->fe; - struct m88ts2022_dev *dev; - int ret; - u8 u8tmp; - unsigned int utmp; - static const struct regmap_config regmap_config = { - .reg_bits = 8, - .val_bits = 8, - }; - - 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 m88ts2022_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; - } - - /* check if the tuner is there */ - ret = regmap_read(dev->regmap, 0x00, &utmp); - if (ret) - goto err; - - if ((utmp & 0x03) == 0x00) { - ret = regmap_write(dev->regmap, 0x00, 0x01); - if (ret) - goto err; - - usleep_range(2000, 50000); - } - - ret = regmap_write(dev->regmap, 0x00, 0x03); - if (ret) - goto err; - - usleep_range(2000, 50000); - - ret = regmap_read(dev->regmap, 0x00, &utmp); - if (ret) - goto err; - - dev_dbg(&dev->client->dev, "chip_id=%02x\n", utmp); - - switch (utmp) { - case 0xc3: - case 0x83: - break; - default: - ret = -ENODEV; - goto err; - } - - switch (dev->cfg.clock_out) { - case M88TS2022_CLOCK_OUT_DISABLED: - u8tmp = 0x60; - break; - case M88TS2022_CLOCK_OUT_ENABLED: - u8tmp = 0x70; - ret = regmap_write(dev->regmap, 0x05, dev->cfg.clock_out_div); - if (ret) - goto err; - break; - case M88TS2022_CLOCK_OUT_ENABLED_XTALOUT: - u8tmp = 0x6c; - break; - default: - ret = -EINVAL; - goto err; - } - - ret = regmap_write(dev->regmap, 0x42, u8tmp); - if (ret) - goto err; - - if (dev->cfg.loop_through) - u8tmp = 0xec; - else - u8tmp = 0x6c; - - ret = regmap_write(dev->regmap, 0x62, u8tmp); - if (ret) - goto err; - - /* sleep */ - ret = regmap_write(dev->regmap, 0x00, 0x00); - if (ret) - goto err; - - dev_info(&dev->client->dev, "Montage M88TS2022 successfully identified\n"); - - fe->tuner_priv = dev; - memcpy(&fe->ops.tuner_ops, &m88ts2022_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 m88ts2022_remove(struct i2c_client *client) -{ - struct m88ts2022_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 m88ts2022_id[] = { - {"m88ts2022", 0}, - {} -}; -MODULE_DEVICE_TABLE(i2c, m88ts2022_id); - -static struct i2c_driver m88ts2022_driver = { - .driver = { - .owner = THIS_MODULE, - .name = "m88ts2022", - }, - .probe = m88ts2022_probe, - .remove = m88ts2022_remove, - .id_table = m88ts2022_id, -}; - -module_i2c_driver(m88ts2022_driver); - -MODULE_DESCRIPTION("Montage M88TS2022 silicon tuner driver"); -MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); -MODULE_LICENSE("GPL"); |