+++ /dev/null
-/*
- * 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, j;
- 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 (j = 0; j < ARRAY_SIZE(reg_vals); j++) {
- ret = regmap_write(dev->regmap, reg_vals[j].reg,
- reg_vals[j].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");
projects / linux.git / commitdiff