Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Montage M88TS2022 silicon tuner driver |
| 3 | * |
| 4 | * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | * Some calculations are taken from existing TS2020 driver. |
| 21 | */ |
| 22 | |
| 23 | #include "m88ts2022_priv.h" |
| 24 | |
| 25 | /* write multiple registers */ |
| 26 | static int m88ts2022_wr_regs(struct m88ts2022_priv *priv, |
| 27 | u8 reg, const u8 *val, int len) |
| 28 | { |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 29 | #define MAX_WR_LEN 3 |
| 30 | #define MAX_WR_XFER_LEN (MAX_WR_LEN + 1) |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 31 | int ret; |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 32 | u8 buf[MAX_WR_XFER_LEN]; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 33 | struct i2c_msg msg[1] = { |
| 34 | { |
| 35 | .addr = priv->cfg->i2c_addr, |
| 36 | .flags = 0, |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 37 | .len = 1 + len, |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 38 | .buf = buf, |
| 39 | } |
| 40 | }; |
| 41 | |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 42 | if (WARN_ON(len > MAX_WR_LEN)) |
| 43 | return -EINVAL; |
| 44 | |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 45 | buf[0] = reg; |
| 46 | memcpy(&buf[1], val, len); |
| 47 | |
| 48 | ret = i2c_transfer(priv->i2c, msg, 1); |
| 49 | if (ret == 1) { |
| 50 | ret = 0; |
| 51 | } else { |
| 52 | dev_warn(&priv->i2c->dev, |
| 53 | "%s: i2c wr failed=%d reg=%02x len=%d\n", |
| 54 | KBUILD_MODNAME, ret, reg, len); |
| 55 | ret = -EREMOTEIO; |
| 56 | } |
| 57 | |
| 58 | return ret; |
| 59 | } |
| 60 | |
| 61 | /* read multiple registers */ |
| 62 | static int m88ts2022_rd_regs(struct m88ts2022_priv *priv, u8 reg, |
| 63 | u8 *val, int len) |
| 64 | { |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 65 | #define MAX_RD_LEN 1 |
| 66 | #define MAX_RD_XFER_LEN (MAX_RD_LEN) |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 67 | int ret; |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 68 | u8 buf[MAX_RD_XFER_LEN]; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 69 | struct i2c_msg msg[2] = { |
| 70 | { |
| 71 | .addr = priv->cfg->i2c_addr, |
| 72 | .flags = 0, |
| 73 | .len = 1, |
| 74 | .buf = ®, |
| 75 | }, { |
| 76 | .addr = priv->cfg->i2c_addr, |
| 77 | .flags = I2C_M_RD, |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 78 | .len = len, |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 79 | .buf = buf, |
| 80 | } |
| 81 | }; |
| 82 | |
Antti Palosaari | 050ae82 | 2013-11-07 17:01:31 -0300 | [diff] [blame] | 83 | if (WARN_ON(len > MAX_RD_LEN)) |
| 84 | return -EINVAL; |
| 85 | |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 86 | ret = i2c_transfer(priv->i2c, msg, 2); |
| 87 | if (ret == 2) { |
| 88 | memcpy(val, buf, len); |
| 89 | ret = 0; |
| 90 | } else { |
| 91 | dev_warn(&priv->i2c->dev, |
| 92 | "%s: i2c rd failed=%d reg=%02x len=%d\n", |
| 93 | KBUILD_MODNAME, ret, reg, len); |
| 94 | ret = -EREMOTEIO; |
| 95 | } |
| 96 | |
| 97 | return ret; |
| 98 | } |
| 99 | |
| 100 | /* write single register */ |
| 101 | static int m88ts2022_wr_reg(struct m88ts2022_priv *priv, u8 reg, u8 val) |
| 102 | { |
| 103 | return m88ts2022_wr_regs(priv, reg, &val, 1); |
| 104 | } |
| 105 | |
| 106 | /* read single register */ |
| 107 | static int m88ts2022_rd_reg(struct m88ts2022_priv *priv, u8 reg, u8 *val) |
| 108 | { |
| 109 | return m88ts2022_rd_regs(priv, reg, val, 1); |
| 110 | } |
| 111 | |
| 112 | /* write single register with mask */ |
| 113 | static int m88ts2022_wr_reg_mask(struct m88ts2022_priv *priv, |
| 114 | u8 reg, u8 val, u8 mask) |
| 115 | { |
| 116 | int ret; |
| 117 | u8 u8tmp; |
| 118 | |
| 119 | /* no need for read if whole reg is written */ |
| 120 | if (mask != 0xff) { |
| 121 | ret = m88ts2022_rd_regs(priv, reg, &u8tmp, 1); |
| 122 | if (ret) |
| 123 | return ret; |
| 124 | |
| 125 | val &= mask; |
| 126 | u8tmp &= ~mask; |
| 127 | val |= u8tmp; |
| 128 | } |
| 129 | |
| 130 | return m88ts2022_wr_regs(priv, reg, &val, 1); |
| 131 | } |
| 132 | |
| 133 | static int m88ts2022_cmd(struct dvb_frontend *fe, |
| 134 | int op, int sleep, u8 reg, u8 mask, u8 val, u8 *reg_val) |
| 135 | { |
| 136 | struct m88ts2022_priv *priv = fe->tuner_priv; |
| 137 | int ret, i; |
| 138 | u8 u8tmp; |
| 139 | struct m88ts2022_reg_val reg_vals[] = { |
| 140 | {0x51, 0x1f - op}, |
| 141 | {0x51, 0x1f}, |
| 142 | {0x50, 0x00 + op}, |
| 143 | {0x50, 0x00}, |
| 144 | }; |
| 145 | |
| 146 | for (i = 0; i < 2; i++) { |
| 147 | dev_dbg(&priv->i2c->dev, |
| 148 | "%s: i=%d op=%02x reg=%02x mask=%02x val=%02x\n", |
| 149 | __func__, i, op, reg, mask, val); |
| 150 | |
| 151 | for (i = 0; i < ARRAY_SIZE(reg_vals); i++) { |
| 152 | ret = m88ts2022_wr_reg(priv, reg_vals[i].reg, |
| 153 | reg_vals[i].val); |
| 154 | if (ret) |
| 155 | goto err; |
| 156 | } |
| 157 | |
| 158 | usleep_range(sleep * 1000, sleep * 10000); |
| 159 | |
| 160 | ret = m88ts2022_rd_reg(priv, reg, &u8tmp); |
| 161 | if (ret) |
| 162 | goto err; |
| 163 | |
| 164 | if ((u8tmp & mask) != val) |
| 165 | break; |
| 166 | } |
| 167 | |
| 168 | if (reg_val) |
| 169 | *reg_val = u8tmp; |
| 170 | err: |
| 171 | return ret; |
| 172 | } |
| 173 | |
| 174 | static int m88ts2022_set_params(struct dvb_frontend *fe) |
| 175 | { |
| 176 | struct m88ts2022_priv *priv = fe->tuner_priv; |
| 177 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 178 | int ret; |
| 179 | unsigned int frequency_khz, frequency_offset_khz, f_3db_hz; |
| 180 | unsigned int f_ref_khz, f_vco_khz, div_ref, div_out, pll_n, gdiv28; |
| 181 | u8 buf[3], u8tmp, cap_code, lpf_gm, lpf_mxdiv, div_max, div_min; |
| 182 | u16 u16tmp; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 183 | dev_dbg(&priv->i2c->dev, |
| 184 | "%s: frequency=%d symbol_rate=%d rolloff=%d\n", |
| 185 | __func__, c->frequency, c->symbol_rate, c->rolloff); |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 186 | /* |
| 187 | * Integer-N PLL synthesizer |
| 188 | * kHz is used for all calculations to keep calculations within 32-bit |
| 189 | */ |
| 190 | f_ref_khz = DIV_ROUND_CLOSEST(priv->cfg->clock, 1000); |
| 191 | div_ref = DIV_ROUND_CLOSEST(f_ref_khz, 2000); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 192 | |
| 193 | if (c->symbol_rate < 5000000) |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 194 | frequency_offset_khz = 3000; /* 3 MHz */ |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 195 | else |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 196 | frequency_offset_khz = 0; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 197 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 198 | frequency_khz = c->frequency + frequency_offset_khz; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 199 | |
| 200 | if (frequency_khz < 1103000) { |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 201 | div_out = 4; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 202 | u8tmp = 0x1b; |
| 203 | } else { |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 204 | div_out = 2; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 205 | u8tmp = 0x0b; |
| 206 | } |
| 207 | |
| 208 | buf[0] = u8tmp; |
| 209 | buf[1] = 0x40; |
| 210 | ret = m88ts2022_wr_regs(priv, 0x10, buf, 2); |
| 211 | if (ret) |
| 212 | goto err; |
| 213 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 214 | f_vco_khz = frequency_khz * div_out; |
| 215 | pll_n = f_vco_khz * div_ref / f_ref_khz; |
| 216 | pll_n += pll_n % 2; |
| 217 | priv->frequency_khz = pll_n * f_ref_khz / div_ref / div_out; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 218 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 219 | if (pll_n < 4095) |
| 220 | u16tmp = pll_n - 1024; |
| 221 | else if (pll_n < 6143) |
| 222 | u16tmp = pll_n + 1024; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 223 | else |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 224 | u16tmp = pll_n + 3072; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 225 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 226 | buf[0] = (u16tmp >> 8) & 0x3f; |
| 227 | buf[1] = (u16tmp >> 0) & 0xff; |
| 228 | buf[2] = div_ref - 8; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 229 | ret = m88ts2022_wr_regs(priv, 0x01, buf, 3); |
| 230 | if (ret) |
| 231 | goto err; |
| 232 | |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 233 | dev_dbg(&priv->i2c->dev, |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 234 | "%s: frequency=%u offset=%d f_vco_khz=%u pll_n=%u div_ref=%u div_out=%u\n", |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 235 | __func__, priv->frequency_khz, |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 236 | priv->frequency_khz - c->frequency, f_vco_khz, pll_n, |
| 237 | div_ref, div_out); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 238 | |
| 239 | ret = m88ts2022_cmd(fe, 0x10, 5, 0x15, 0x40, 0x00, NULL); |
| 240 | if (ret) |
| 241 | goto err; |
| 242 | |
| 243 | ret = m88ts2022_rd_reg(priv, 0x14, &u8tmp); |
| 244 | if (ret) |
| 245 | goto err; |
| 246 | |
| 247 | u8tmp &= 0x7f; |
| 248 | if (u8tmp < 64) { |
| 249 | ret = m88ts2022_wr_reg_mask(priv, 0x10, 0x80, 0x80); |
| 250 | if (ret) |
| 251 | goto err; |
| 252 | |
| 253 | ret = m88ts2022_wr_reg(priv, 0x11, 0x6f); |
| 254 | if (ret) |
| 255 | goto err; |
| 256 | |
| 257 | ret = m88ts2022_cmd(fe, 0x10, 5, 0x15, 0x40, 0x00, NULL); |
| 258 | if (ret) |
| 259 | goto err; |
| 260 | } |
| 261 | |
| 262 | ret = m88ts2022_rd_reg(priv, 0x14, &u8tmp); |
| 263 | if (ret) |
| 264 | goto err; |
| 265 | |
| 266 | u8tmp &= 0x1f; |
| 267 | if (u8tmp > 19) { |
| 268 | ret = m88ts2022_wr_reg_mask(priv, 0x10, 0x00, 0x02); |
| 269 | if (ret) |
| 270 | goto err; |
| 271 | } |
| 272 | |
| 273 | ret = m88ts2022_cmd(fe, 0x08, 5, 0x3c, 0xff, 0x00, NULL); |
| 274 | if (ret) |
| 275 | goto err; |
| 276 | |
| 277 | ret = m88ts2022_wr_reg(priv, 0x25, 0x00); |
| 278 | if (ret) |
| 279 | goto err; |
| 280 | |
| 281 | ret = m88ts2022_wr_reg(priv, 0x27, 0x70); |
| 282 | if (ret) |
| 283 | goto err; |
| 284 | |
| 285 | ret = m88ts2022_wr_reg(priv, 0x41, 0x09); |
| 286 | if (ret) |
| 287 | goto err; |
| 288 | |
| 289 | ret = m88ts2022_wr_reg(priv, 0x08, 0x0b); |
| 290 | if (ret) |
| 291 | goto err; |
| 292 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 293 | /* filters */ |
| 294 | gdiv28 = DIV_ROUND_CLOSEST(f_ref_khz * 1694U, 1000000U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 295 | |
| 296 | ret = m88ts2022_wr_reg(priv, 0x04, gdiv28); |
| 297 | if (ret) |
| 298 | goto err; |
| 299 | |
| 300 | ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); |
| 301 | if (ret) |
| 302 | goto err; |
| 303 | |
| 304 | cap_code = u8tmp & 0x3f; |
| 305 | |
| 306 | ret = m88ts2022_wr_reg(priv, 0x41, 0x0d); |
| 307 | if (ret) |
| 308 | goto err; |
| 309 | |
| 310 | ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); |
| 311 | if (ret) |
| 312 | goto err; |
| 313 | |
| 314 | u8tmp &= 0x3f; |
| 315 | cap_code = (cap_code + u8tmp) / 2; |
| 316 | gdiv28 = gdiv28 * 207 / (cap_code * 2 + 151); |
| 317 | div_max = gdiv28 * 135 / 100; |
| 318 | div_min = gdiv28 * 78 / 100; |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 319 | div_max = clamp_val(div_max, 0U, 63U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 320 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 321 | f_3db_hz = c->symbol_rate * 135UL / 200UL; |
| 322 | f_3db_hz += 2000000U + (frequency_offset_khz * 1000U); |
| 323 | f_3db_hz = clamp(f_3db_hz, 7000000U, 40000000U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 324 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 325 | #define LPF_COEFF 3200U |
| 326 | lpf_gm = DIV_ROUND_CLOSEST(f_3db_hz * gdiv28, LPF_COEFF * f_ref_khz); |
| 327 | lpf_gm = clamp_val(lpf_gm, 1U, 23U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 328 | |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 329 | lpf_mxdiv = DIV_ROUND_CLOSEST(lpf_gm * LPF_COEFF * f_ref_khz, f_3db_hz); |
| 330 | if (lpf_mxdiv < div_min) |
| 331 | lpf_mxdiv = DIV_ROUND_CLOSEST(++lpf_gm * LPF_COEFF * f_ref_khz, f_3db_hz); |
| 332 | lpf_mxdiv = clamp_val(lpf_mxdiv, 0U, div_max); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 333 | |
| 334 | ret = m88ts2022_wr_reg(priv, 0x04, lpf_mxdiv); |
| 335 | if (ret) |
| 336 | goto err; |
| 337 | |
| 338 | ret = m88ts2022_wr_reg(priv, 0x06, lpf_gm); |
| 339 | if (ret) |
| 340 | goto err; |
| 341 | |
| 342 | ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); |
| 343 | if (ret) |
| 344 | goto err; |
| 345 | |
| 346 | cap_code = u8tmp & 0x3f; |
| 347 | |
| 348 | ret = m88ts2022_wr_reg(priv, 0x41, 0x09); |
| 349 | if (ret) |
| 350 | goto err; |
| 351 | |
| 352 | ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp); |
| 353 | if (ret) |
| 354 | goto err; |
| 355 | |
| 356 | u8tmp &= 0x3f; |
| 357 | cap_code = (cap_code + u8tmp) / 2; |
| 358 | |
| 359 | u8tmp = cap_code | 0x80; |
| 360 | ret = m88ts2022_wr_reg(priv, 0x25, u8tmp); |
| 361 | if (ret) |
| 362 | goto err; |
| 363 | |
| 364 | ret = m88ts2022_wr_reg(priv, 0x27, 0x30); |
| 365 | if (ret) |
| 366 | goto err; |
| 367 | |
| 368 | ret = m88ts2022_wr_reg(priv, 0x08, 0x09); |
| 369 | if (ret) |
| 370 | goto err; |
| 371 | |
| 372 | ret = m88ts2022_cmd(fe, 0x01, 20, 0x21, 0xff, 0x00, NULL); |
| 373 | if (ret) |
| 374 | goto err; |
| 375 | err: |
| 376 | if (ret) |
| 377 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| 378 | |
| 379 | return ret; |
| 380 | } |
| 381 | |
| 382 | static int m88ts2022_init(struct dvb_frontend *fe) |
| 383 | { |
| 384 | struct m88ts2022_priv *priv = fe->tuner_priv; |
| 385 | int ret, i; |
| 386 | u8 u8tmp; |
| 387 | static const struct m88ts2022_reg_val reg_vals[] = { |
| 388 | {0x7d, 0x9d}, |
| 389 | {0x7c, 0x9a}, |
| 390 | {0x7a, 0x76}, |
| 391 | {0x3b, 0x01}, |
| 392 | {0x63, 0x88}, |
| 393 | {0x61, 0x85}, |
| 394 | {0x22, 0x30}, |
| 395 | {0x30, 0x40}, |
| 396 | {0x20, 0x23}, |
| 397 | {0x24, 0x02}, |
| 398 | {0x12, 0xa0}, |
| 399 | }; |
| 400 | dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| 401 | |
| 402 | ret = m88ts2022_wr_reg(priv, 0x00, 0x01); |
| 403 | if (ret) |
| 404 | goto err; |
| 405 | |
| 406 | ret = m88ts2022_wr_reg(priv, 0x00, 0x03); |
| 407 | if (ret) |
| 408 | goto err; |
| 409 | |
| 410 | switch (priv->cfg->clock_out) { |
| 411 | case M88TS2022_CLOCK_OUT_DISABLED: |
| 412 | u8tmp = 0x60; |
| 413 | break; |
| 414 | case M88TS2022_CLOCK_OUT_ENABLED: |
| 415 | u8tmp = 0x70; |
| 416 | ret = m88ts2022_wr_reg(priv, 0x05, priv->cfg->clock_out_div); |
| 417 | if (ret) |
| 418 | goto err; |
| 419 | break; |
| 420 | case M88TS2022_CLOCK_OUT_ENABLED_XTALOUT: |
| 421 | u8tmp = 0x6c; |
| 422 | break; |
| 423 | default: |
| 424 | goto err; |
| 425 | } |
| 426 | |
| 427 | ret = m88ts2022_wr_reg(priv, 0x42, u8tmp); |
| 428 | if (ret) |
| 429 | goto err; |
| 430 | |
| 431 | if (priv->cfg->loop_through) |
| 432 | u8tmp = 0xec; |
| 433 | else |
| 434 | u8tmp = 0x6c; |
| 435 | |
| 436 | ret = m88ts2022_wr_reg(priv, 0x62, u8tmp); |
| 437 | if (ret) |
| 438 | goto err; |
| 439 | |
| 440 | for (i = 0; i < ARRAY_SIZE(reg_vals); i++) { |
| 441 | ret = m88ts2022_wr_reg(priv, reg_vals[i].reg, reg_vals[i].val); |
| 442 | if (ret) |
| 443 | goto err; |
| 444 | } |
| 445 | err: |
| 446 | if (ret) |
| 447 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| 448 | return ret; |
| 449 | } |
| 450 | |
| 451 | static int m88ts2022_sleep(struct dvb_frontend *fe) |
| 452 | { |
| 453 | struct m88ts2022_priv *priv = fe->tuner_priv; |
| 454 | int ret; |
| 455 | dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| 456 | |
| 457 | ret = m88ts2022_wr_reg(priv, 0x00, 0x00); |
| 458 | if (ret) |
| 459 | goto err; |
| 460 | err: |
| 461 | if (ret) |
| 462 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| 463 | return ret; |
| 464 | } |
| 465 | |
| 466 | static int m88ts2022_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
| 467 | { |
| 468 | struct m88ts2022_priv *priv = fe->tuner_priv; |
| 469 | dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| 470 | |
| 471 | *frequency = priv->frequency_khz; |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | static int m88ts2022_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) |
| 476 | { |
| 477 | struct m88ts2022_priv *priv = fe->tuner_priv; |
| 478 | dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| 479 | |
| 480 | *frequency = 0; /* Zero-IF */ |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | static int m88ts2022_get_rf_strength(struct dvb_frontend *fe, u16 *strength) |
| 485 | { |
| 486 | struct m88ts2022_priv *priv = fe->tuner_priv; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 487 | int ret; |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 488 | u8 u8tmp; |
| 489 | u16 gain, u16tmp; |
| 490 | unsigned int gain1, gain2, gain3; |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 491 | |
| 492 | ret = m88ts2022_rd_reg(priv, 0x3d, &u8tmp); |
| 493 | if (ret) |
| 494 | goto err; |
| 495 | |
| 496 | gain1 = (u8tmp >> 0) & 0x1f; |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 497 | gain1 = clamp(gain1, 0U, 15U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 498 | |
| 499 | ret = m88ts2022_rd_reg(priv, 0x21, &u8tmp); |
| 500 | if (ret) |
| 501 | goto err; |
| 502 | |
| 503 | gain2 = (u8tmp >> 0) & 0x1f; |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 504 | gain2 = clamp(gain2, 2U, 16U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 505 | |
| 506 | ret = m88ts2022_rd_reg(priv, 0x66, &u8tmp); |
| 507 | if (ret) |
| 508 | goto err; |
| 509 | |
| 510 | gain3 = (u8tmp >> 3) & 0x07; |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 511 | gain3 = clamp(gain3, 0U, 6U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 512 | |
| 513 | gain = gain1 * 265 + gain2 * 338 + gain3 * 285; |
| 514 | |
| 515 | /* scale value to 0x0000-0xffff */ |
| 516 | u16tmp = (0xffff - gain); |
Antti Palosaari | c19314b | 2013-12-02 01:39:24 -0300 | [diff] [blame^] | 517 | u16tmp = clamp_val(u16tmp, 59000U, 61500U); |
Antti Palosaari | 695efd0 | 2013-02-25 08:43:32 -0300 | [diff] [blame] | 518 | |
| 519 | *strength = (u16tmp - 59000) * 0xffff / (61500 - 59000); |
| 520 | err: |
| 521 | if (ret) |
| 522 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| 523 | return ret; |
| 524 | } |
| 525 | |
| 526 | static int m88ts2022_release(struct dvb_frontend *fe) |
| 527 | { |
| 528 | struct m88ts2022_priv *priv = fe->tuner_priv; |
| 529 | dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| 530 | |
| 531 | kfree(fe->tuner_priv); |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | static const struct dvb_tuner_ops m88ts2022_tuner_ops = { |
| 536 | .info = { |
| 537 | .name = "Montage M88TS2022", |
| 538 | .frequency_min = 950000, |
| 539 | .frequency_max = 2150000, |
| 540 | }, |
| 541 | |
| 542 | .release = m88ts2022_release, |
| 543 | |
| 544 | .init = m88ts2022_init, |
| 545 | .sleep = m88ts2022_sleep, |
| 546 | .set_params = m88ts2022_set_params, |
| 547 | |
| 548 | .get_frequency = m88ts2022_get_frequency, |
| 549 | .get_if_frequency = m88ts2022_get_if_frequency, |
| 550 | .get_rf_strength = m88ts2022_get_rf_strength, |
| 551 | }; |
| 552 | |
| 553 | struct dvb_frontend *m88ts2022_attach(struct dvb_frontend *fe, |
| 554 | struct i2c_adapter *i2c, const struct m88ts2022_config *cfg) |
| 555 | { |
| 556 | struct m88ts2022_priv *priv; |
| 557 | int ret; |
| 558 | u8 chip_id, u8tmp; |
| 559 | |
| 560 | priv = kzalloc(sizeof(struct m88ts2022_priv), GFP_KERNEL); |
| 561 | if (!priv) { |
| 562 | ret = -ENOMEM; |
| 563 | dev_err(&i2c->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME); |
| 564 | goto err; |
| 565 | } |
| 566 | |
| 567 | priv->cfg = cfg; |
| 568 | priv->i2c = i2c; |
| 569 | priv->fe = fe; |
| 570 | |
| 571 | /* check if the tuner is there */ |
| 572 | ret = m88ts2022_rd_reg(priv, 0x00, &u8tmp); |
| 573 | if (ret) |
| 574 | goto err; |
| 575 | |
| 576 | if ((u8tmp & 0x03) == 0x00) { |
| 577 | ret = m88ts2022_wr_reg(priv, 0x00, 0x01); |
| 578 | if (ret < 0) |
| 579 | goto err; |
| 580 | |
| 581 | usleep_range(2000, 50000); |
| 582 | } |
| 583 | |
| 584 | ret = m88ts2022_wr_reg(priv, 0x00, 0x03); |
| 585 | if (ret) |
| 586 | goto err; |
| 587 | |
| 588 | usleep_range(2000, 50000); |
| 589 | |
| 590 | ret = m88ts2022_rd_reg(priv, 0x00, &chip_id); |
| 591 | if (ret) |
| 592 | goto err; |
| 593 | |
| 594 | dev_dbg(&priv->i2c->dev, "%s: chip_id=%02x\n", __func__, chip_id); |
| 595 | |
| 596 | switch (chip_id) { |
| 597 | case 0xc3: |
| 598 | case 0x83: |
| 599 | break; |
| 600 | default: |
| 601 | goto err; |
| 602 | } |
| 603 | |
| 604 | switch (priv->cfg->clock_out) { |
| 605 | case M88TS2022_CLOCK_OUT_DISABLED: |
| 606 | u8tmp = 0x60; |
| 607 | break; |
| 608 | case M88TS2022_CLOCK_OUT_ENABLED: |
| 609 | u8tmp = 0x70; |
| 610 | ret = m88ts2022_wr_reg(priv, 0x05, priv->cfg->clock_out_div); |
| 611 | if (ret) |
| 612 | goto err; |
| 613 | break; |
| 614 | case M88TS2022_CLOCK_OUT_ENABLED_XTALOUT: |
| 615 | u8tmp = 0x6c; |
| 616 | break; |
| 617 | default: |
| 618 | goto err; |
| 619 | } |
| 620 | |
| 621 | ret = m88ts2022_wr_reg(priv, 0x42, u8tmp); |
| 622 | if (ret) |
| 623 | goto err; |
| 624 | |
| 625 | if (priv->cfg->loop_through) |
| 626 | u8tmp = 0xec; |
| 627 | else |
| 628 | u8tmp = 0x6c; |
| 629 | |
| 630 | ret = m88ts2022_wr_reg(priv, 0x62, u8tmp); |
| 631 | if (ret) |
| 632 | goto err; |
| 633 | |
| 634 | /* sleep */ |
| 635 | ret = m88ts2022_wr_reg(priv, 0x00, 0x00); |
| 636 | if (ret) |
| 637 | goto err; |
| 638 | |
| 639 | dev_info(&priv->i2c->dev, |
| 640 | "%s: Montage M88TS2022 successfully identified\n", |
| 641 | KBUILD_MODNAME); |
| 642 | |
| 643 | fe->tuner_priv = priv; |
| 644 | memcpy(&fe->ops.tuner_ops, &m88ts2022_tuner_ops, |
| 645 | sizeof(struct dvb_tuner_ops)); |
| 646 | err: |
| 647 | if (ret) { |
| 648 | dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret); |
| 649 | kfree(priv); |
| 650 | return NULL; |
| 651 | } |
| 652 | |
| 653 | return fe; |
| 654 | } |
| 655 | EXPORT_SYMBOL(m88ts2022_attach); |
| 656 | |
| 657 | MODULE_DESCRIPTION("Montage M88TS2022 silicon tuner driver"); |
| 658 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| 659 | MODULE_LICENSE("GPL"); |