Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Sony CXD2820R demodulator driver |
| 3 | * |
| 4 | * Copyright (C) 2010 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 | |
| 21 | |
| 22 | #include "cxd2820r_priv.h" |
| 23 | |
| 24 | int cxd2820r_debug; |
| 25 | module_param_named(debug, cxd2820r_debug, int, 0644); |
| 26 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); |
| 27 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 28 | /* write multiple registers */ |
| 29 | static int cxd2820r_wr_regs_i2c(struct cxd2820r_priv *priv, u8 i2c, u8 reg, |
| 30 | u8 *val, int len) |
| 31 | { |
| 32 | int ret; |
| 33 | u8 buf[len+1]; |
| 34 | struct i2c_msg msg[1] = { |
| 35 | { |
| 36 | .addr = i2c, |
| 37 | .flags = 0, |
| 38 | .len = sizeof(buf), |
| 39 | .buf = buf, |
| 40 | } |
| 41 | }; |
| 42 | |
| 43 | buf[0] = reg; |
| 44 | memcpy(&buf[1], val, len); |
| 45 | |
| 46 | ret = i2c_transfer(priv->i2c, msg, 1); |
| 47 | if (ret == 1) { |
| 48 | ret = 0; |
| 49 | } else { |
| 50 | warn("i2c wr failed ret:%d reg:%02x len:%d", ret, reg, len); |
| 51 | ret = -EREMOTEIO; |
| 52 | } |
| 53 | return ret; |
| 54 | } |
| 55 | |
| 56 | /* read multiple registers */ |
| 57 | static int cxd2820r_rd_regs_i2c(struct cxd2820r_priv *priv, u8 i2c, u8 reg, |
| 58 | u8 *val, int len) |
| 59 | { |
| 60 | int ret; |
| 61 | u8 buf[len]; |
| 62 | struct i2c_msg msg[2] = { |
| 63 | { |
| 64 | .addr = i2c, |
| 65 | .flags = 0, |
| 66 | .len = 1, |
| 67 | .buf = ®, |
| 68 | }, { |
| 69 | .addr = i2c, |
| 70 | .flags = I2C_M_RD, |
| 71 | .len = sizeof(buf), |
| 72 | .buf = buf, |
| 73 | } |
| 74 | }; |
| 75 | |
| 76 | ret = i2c_transfer(priv->i2c, msg, 2); |
| 77 | if (ret == 2) { |
| 78 | memcpy(val, buf, len); |
| 79 | ret = 0; |
| 80 | } else { |
| 81 | warn("i2c rd failed ret:%d reg:%02x len:%d", ret, reg, len); |
| 82 | ret = -EREMOTEIO; |
| 83 | } |
| 84 | |
| 85 | return ret; |
| 86 | } |
| 87 | |
| 88 | /* write multiple registers */ |
Steve Kerrison | 9ac51c5 | 2011-05-02 18:19:13 -0300 | [diff] [blame] | 89 | int cxd2820r_wr_regs(struct cxd2820r_priv *priv, u32 reginfo, u8 *val, |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 90 | int len) |
| 91 | { |
| 92 | int ret; |
| 93 | u8 i2c_addr; |
| 94 | u8 reg = (reginfo >> 0) & 0xff; |
| 95 | u8 bank = (reginfo >> 8) & 0xff; |
| 96 | u8 i2c = (reginfo >> 16) & 0x01; |
| 97 | |
| 98 | /* select I2C */ |
| 99 | if (i2c) |
| 100 | i2c_addr = priv->cfg.i2c_address | (1 << 1); /* DVB-C */ |
| 101 | else |
| 102 | i2c_addr = priv->cfg.i2c_address; /* DVB-T/T2 */ |
| 103 | |
| 104 | /* switch bank if needed */ |
| 105 | if (bank != priv->bank[i2c]) { |
| 106 | ret = cxd2820r_wr_regs_i2c(priv, i2c_addr, 0x00, &bank, 1); |
| 107 | if (ret) |
| 108 | return ret; |
| 109 | priv->bank[i2c] = bank; |
| 110 | } |
| 111 | return cxd2820r_wr_regs_i2c(priv, i2c_addr, reg, val, len); |
| 112 | } |
| 113 | |
| 114 | /* read multiple registers */ |
Steve Kerrison | 9ac51c5 | 2011-05-02 18:19:13 -0300 | [diff] [blame] | 115 | int cxd2820r_rd_regs(struct cxd2820r_priv *priv, u32 reginfo, u8 *val, |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 116 | int len) |
| 117 | { |
| 118 | int ret; |
| 119 | u8 i2c_addr; |
| 120 | u8 reg = (reginfo >> 0) & 0xff; |
| 121 | u8 bank = (reginfo >> 8) & 0xff; |
| 122 | u8 i2c = (reginfo >> 16) & 0x01; |
| 123 | |
| 124 | /* select I2C */ |
| 125 | if (i2c) |
| 126 | i2c_addr = priv->cfg.i2c_address | (1 << 1); /* DVB-C */ |
| 127 | else |
| 128 | i2c_addr = priv->cfg.i2c_address; /* DVB-T/T2 */ |
| 129 | |
| 130 | /* switch bank if needed */ |
| 131 | if (bank != priv->bank[i2c]) { |
| 132 | ret = cxd2820r_wr_regs_i2c(priv, i2c_addr, 0x00, &bank, 1); |
| 133 | if (ret) |
| 134 | return ret; |
| 135 | priv->bank[i2c] = bank; |
| 136 | } |
| 137 | return cxd2820r_rd_regs_i2c(priv, i2c_addr, reg, val, len); |
| 138 | } |
| 139 | |
| 140 | /* write single register */ |
Steve Kerrison | 9ac51c5 | 2011-05-02 18:19:13 -0300 | [diff] [blame] | 141 | int cxd2820r_wr_reg(struct cxd2820r_priv *priv, u32 reg, u8 val) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 142 | { |
| 143 | return cxd2820r_wr_regs(priv, reg, &val, 1); |
| 144 | } |
| 145 | |
| 146 | /* read single register */ |
Steve Kerrison | 9ac51c5 | 2011-05-02 18:19:13 -0300 | [diff] [blame] | 147 | int cxd2820r_rd_reg(struct cxd2820r_priv *priv, u32 reg, u8 *val) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 148 | { |
| 149 | return cxd2820r_rd_regs(priv, reg, val, 1); |
| 150 | } |
| 151 | |
| 152 | /* write single register with mask */ |
Steve Kerrison | 9ac51c5 | 2011-05-02 18:19:13 -0300 | [diff] [blame] | 153 | int cxd2820r_wr_reg_mask(struct cxd2820r_priv *priv, u32 reg, u8 val, |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 154 | u8 mask) |
| 155 | { |
| 156 | int ret; |
| 157 | u8 tmp; |
| 158 | |
| 159 | /* no need for read if whole reg is written */ |
| 160 | if (mask != 0xff) { |
| 161 | ret = cxd2820r_rd_reg(priv, reg, &tmp); |
| 162 | if (ret) |
| 163 | return ret; |
| 164 | |
| 165 | val &= mask; |
| 166 | tmp &= ~mask; |
| 167 | val |= tmp; |
| 168 | } |
| 169 | |
| 170 | return cxd2820r_wr_reg(priv, reg, val); |
| 171 | } |
| 172 | |
Steve Kerrison | 9ac51c5 | 2011-05-02 18:19:13 -0300 | [diff] [blame] | 173 | int cxd2820r_gpio(struct dvb_frontend *fe) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 174 | { |
| 175 | struct cxd2820r_priv *priv = fe->demodulator_priv; |
| 176 | int ret, i; |
| 177 | u8 *gpio, tmp0, tmp1; |
| 178 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
| 179 | |
| 180 | switch (fe->dtv_property_cache.delivery_system) { |
| 181 | case SYS_DVBT: |
| 182 | gpio = priv->cfg.gpio_dvbt; |
| 183 | break; |
| 184 | case SYS_DVBT2: |
| 185 | gpio = priv->cfg.gpio_dvbt2; |
| 186 | break; |
| 187 | case SYS_DVBC_ANNEX_AC: |
| 188 | gpio = priv->cfg.gpio_dvbc; |
| 189 | break; |
| 190 | default: |
| 191 | ret = -EINVAL; |
| 192 | goto error; |
| 193 | } |
| 194 | |
| 195 | /* update GPIOs only when needed */ |
| 196 | if (!memcmp(gpio, priv->gpio, sizeof(priv->gpio))) |
| 197 | return 0; |
| 198 | |
| 199 | tmp0 = 0x00; |
| 200 | tmp1 = 0x00; |
| 201 | for (i = 0; i < sizeof(priv->gpio); i++) { |
| 202 | /* enable / disable */ |
| 203 | if (gpio[i] & CXD2820R_GPIO_E) |
| 204 | tmp0 |= (2 << 6) >> (2 * i); |
| 205 | else |
| 206 | tmp0 |= (1 << 6) >> (2 * i); |
| 207 | |
| 208 | /* input / output */ |
| 209 | if (gpio[i] & CXD2820R_GPIO_I) |
| 210 | tmp1 |= (1 << (3 + i)); |
| 211 | else |
| 212 | tmp1 |= (0 << (3 + i)); |
| 213 | |
| 214 | /* high / low */ |
| 215 | if (gpio[i] & CXD2820R_GPIO_H) |
| 216 | tmp1 |= (1 << (0 + i)); |
| 217 | else |
| 218 | tmp1 |= (0 << (0 + i)); |
| 219 | |
| 220 | dbg("%s: GPIO i=%d %02x %02x", __func__, i, tmp0, tmp1); |
| 221 | } |
| 222 | |
| 223 | dbg("%s: wr gpio=%02x %02x", __func__, tmp0, tmp1); |
| 224 | |
| 225 | /* write bits [7:2] */ |
| 226 | ret = cxd2820r_wr_reg_mask(priv, 0x00089, tmp0, 0xfc); |
| 227 | if (ret) |
| 228 | goto error; |
| 229 | |
| 230 | /* write bits [5:0] */ |
| 231 | ret = cxd2820r_wr_reg_mask(priv, 0x0008e, tmp1, 0x3f); |
| 232 | if (ret) |
| 233 | goto error; |
| 234 | |
| 235 | memcpy(priv->gpio, gpio, sizeof(priv->gpio)); |
| 236 | |
| 237 | return ret; |
| 238 | error: |
| 239 | dbg("%s: failed:%d", __func__, ret); |
| 240 | return ret; |
| 241 | } |
| 242 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 243 | /* 64 bit div with round closest, like DIV_ROUND_CLOSEST but 64 bit */ |
Steve Kerrison | 9ac51c5 | 2011-05-02 18:19:13 -0300 | [diff] [blame] | 244 | u32 cxd2820r_div_u64_round_closest(u64 dividend, u32 divisor) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 245 | { |
| 246 | return div_u64(dividend + (divisor / 2), divisor); |
| 247 | } |
| 248 | |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 249 | static int cxd2820r_set_frontend(struct dvb_frontend *fe) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 250 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 251 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| 252 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 253 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 254 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 255 | switch (c->delivery_system) { |
| 256 | case SYS_DVBT: |
| 257 | ret = cxd2820r_init_t(fe); |
| 258 | if (ret < 0) |
| 259 | goto err; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 260 | ret = cxd2820r_set_frontend_t(fe); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 261 | if (ret < 0) |
| 262 | goto err; |
| 263 | break; |
| 264 | case SYS_DVBT2: |
| 265 | ret = cxd2820r_init_t(fe); |
| 266 | if (ret < 0) |
| 267 | goto err; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 268 | ret = cxd2820r_set_frontend_t2(fe); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 269 | if (ret < 0) |
| 270 | goto err; |
| 271 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 272 | case SYS_DVBC_ANNEX_A: |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 273 | ret = cxd2820r_init_c(fe); |
| 274 | if (ret < 0) |
| 275 | goto err; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 276 | ret = cxd2820r_set_frontend_c(fe); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 277 | if (ret < 0) |
| 278 | goto err; |
| 279 | break; |
| 280 | default: |
| 281 | dbg("%s: error state=%d", __func__, fe->dtv_property_cache.delivery_system); |
| 282 | ret = -EINVAL; |
| 283 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 284 | } |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 285 | err: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 286 | return ret; |
| 287 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 288 | static int cxd2820r_read_status(struct dvb_frontend *fe, fe_status_t *status) |
| 289 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 290 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 291 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 292 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 293 | switch (fe->dtv_property_cache.delivery_system) { |
| 294 | case SYS_DVBT: |
| 295 | ret = cxd2820r_read_status_t(fe, status); |
| 296 | break; |
| 297 | case SYS_DVBT2: |
| 298 | ret = cxd2820r_read_status_t2(fe, status); |
| 299 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 300 | case SYS_DVBC_ANNEX_A: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 301 | ret = cxd2820r_read_status_c(fe, status); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 302 | break; |
| 303 | default: |
| 304 | ret = -EINVAL; |
| 305 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 306 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 307 | return ret; |
| 308 | } |
| 309 | |
| 310 | static int cxd2820r_get_frontend(struct dvb_frontend *fe, |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 311 | struct dtv_frontend_properties *c) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 312 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 313 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 314 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 315 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 316 | switch (fe->dtv_property_cache.delivery_system) { |
| 317 | case SYS_DVBT: |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 318 | ret = cxd2820r_get_frontend_t(fe); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 319 | break; |
| 320 | case SYS_DVBT2: |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 321 | ret = cxd2820r_get_frontend_t2(fe); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 322 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 323 | case SYS_DVBC_ANNEX_A: |
| 324 | ret = cxd2820r_get_frontend_c(fe); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 325 | break; |
| 326 | default: |
| 327 | ret = -EINVAL; |
| 328 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 329 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 330 | return ret; |
| 331 | } |
| 332 | |
| 333 | static int cxd2820r_read_ber(struct dvb_frontend *fe, u32 *ber) |
| 334 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 335 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 336 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 337 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 338 | switch (fe->dtv_property_cache.delivery_system) { |
| 339 | case SYS_DVBT: |
| 340 | ret = cxd2820r_read_ber_t(fe, ber); |
| 341 | break; |
| 342 | case SYS_DVBT2: |
| 343 | ret = cxd2820r_read_ber_t2(fe, ber); |
| 344 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 345 | case SYS_DVBC_ANNEX_A: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 346 | ret = cxd2820r_read_ber_c(fe, ber); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 347 | break; |
| 348 | default: |
| 349 | ret = -EINVAL; |
| 350 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 351 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 352 | return ret; |
| 353 | } |
| 354 | |
| 355 | static int cxd2820r_read_signal_strength(struct dvb_frontend *fe, u16 *strength) |
| 356 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 357 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 358 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 359 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 360 | switch (fe->dtv_property_cache.delivery_system) { |
| 361 | case SYS_DVBT: |
| 362 | ret = cxd2820r_read_signal_strength_t(fe, strength); |
| 363 | break; |
| 364 | case SYS_DVBT2: |
| 365 | ret = cxd2820r_read_signal_strength_t2(fe, strength); |
| 366 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 367 | case SYS_DVBC_ANNEX_A: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 368 | ret = cxd2820r_read_signal_strength_c(fe, strength); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 369 | break; |
| 370 | default: |
| 371 | ret = -EINVAL; |
| 372 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 373 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 374 | return ret; |
| 375 | } |
| 376 | |
| 377 | static int cxd2820r_read_snr(struct dvb_frontend *fe, u16 *snr) |
| 378 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 379 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 380 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 381 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 382 | switch (fe->dtv_property_cache.delivery_system) { |
| 383 | case SYS_DVBT: |
| 384 | ret = cxd2820r_read_snr_t(fe, snr); |
| 385 | break; |
| 386 | case SYS_DVBT2: |
| 387 | ret = cxd2820r_read_snr_t2(fe, snr); |
| 388 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 389 | case SYS_DVBC_ANNEX_A: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 390 | ret = cxd2820r_read_snr_c(fe, snr); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 391 | break; |
| 392 | default: |
| 393 | ret = -EINVAL; |
| 394 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 395 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 396 | return ret; |
| 397 | } |
| 398 | |
| 399 | static int cxd2820r_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
| 400 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 401 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 402 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 403 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 404 | switch (fe->dtv_property_cache.delivery_system) { |
| 405 | case SYS_DVBT: |
| 406 | ret = cxd2820r_read_ucblocks_t(fe, ucblocks); |
| 407 | break; |
| 408 | case SYS_DVBT2: |
| 409 | ret = cxd2820r_read_ucblocks_t2(fe, ucblocks); |
| 410 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 411 | case SYS_DVBC_ANNEX_A: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 412 | ret = cxd2820r_read_ucblocks_c(fe, ucblocks); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 413 | break; |
| 414 | default: |
| 415 | ret = -EINVAL; |
| 416 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 417 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 418 | return ret; |
| 419 | } |
| 420 | |
| 421 | static int cxd2820r_init(struct dvb_frontend *fe) |
| 422 | { |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 423 | return 0; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | static int cxd2820r_sleep(struct dvb_frontend *fe) |
| 427 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 428 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 429 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 430 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 431 | switch (fe->dtv_property_cache.delivery_system) { |
| 432 | case SYS_DVBT: |
| 433 | ret = cxd2820r_sleep_t(fe); |
| 434 | break; |
| 435 | case SYS_DVBT2: |
| 436 | ret = cxd2820r_sleep_t2(fe); |
| 437 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 438 | case SYS_DVBC_ANNEX_A: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 439 | ret = cxd2820r_sleep_c(fe); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 440 | break; |
| 441 | default: |
| 442 | ret = -EINVAL; |
| 443 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 444 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 445 | return ret; |
| 446 | } |
| 447 | |
| 448 | static int cxd2820r_get_tune_settings(struct dvb_frontend *fe, |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 449 | struct dvb_frontend_tune_settings *s) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 450 | { |
Antti Palosaari | e47b78f | 2011-05-03 20:31:36 -0300 | [diff] [blame] | 451 | int ret; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 452 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 453 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 454 | switch (fe->dtv_property_cache.delivery_system) { |
| 455 | case SYS_DVBT: |
| 456 | ret = cxd2820r_get_tune_settings_t(fe, s); |
| 457 | break; |
| 458 | case SYS_DVBT2: |
| 459 | ret = cxd2820r_get_tune_settings_t2(fe, s); |
| 460 | break; |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 461 | case SYS_DVBC_ANNEX_A: |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 462 | ret = cxd2820r_get_tune_settings_c(fe, s); |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 463 | break; |
| 464 | default: |
| 465 | ret = -EINVAL; |
| 466 | break; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 467 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 468 | return ret; |
| 469 | } |
| 470 | |
Mauro Carvalho Chehab | 41da532 | 2011-12-26 18:03:12 -0300 | [diff] [blame] | 471 | static enum dvbfe_search cxd2820r_search(struct dvb_frontend *fe) |
Antti Palosaari | e47b78f | 2011-05-03 20:31:36 -0300 | [diff] [blame] | 472 | { |
| 473 | struct cxd2820r_priv *priv = fe->demodulator_priv; |
| 474 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| 475 | int ret, i; |
| 476 | fe_status_t status = 0; |
| 477 | dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system); |
| 478 | |
| 479 | /* switch between DVB-T and DVB-T2 when tune fails */ |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 480 | if (priv->last_tune_failed && (priv->delivery_system != SYS_DVBC_ANNEX_A)) { |
Antti Palosaari | e47b78f | 2011-05-03 20:31:36 -0300 | [diff] [blame] | 481 | if (priv->delivery_system == SYS_DVBT) |
| 482 | c->delivery_system = SYS_DVBT2; |
| 483 | else |
| 484 | c->delivery_system = SYS_DVBT; |
| 485 | } |
| 486 | |
| 487 | /* set frontend */ |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 488 | ret = cxd2820r_set_frontend(fe); |
Antti Palosaari | e47b78f | 2011-05-03 20:31:36 -0300 | [diff] [blame] | 489 | if (ret) |
| 490 | goto error; |
| 491 | |
| 492 | |
| 493 | /* frontend lock wait loop count */ |
| 494 | switch (priv->delivery_system) { |
| 495 | case SYS_DVBT: |
| 496 | i = 20; |
| 497 | break; |
| 498 | case SYS_DVBT2: |
| 499 | i = 40; |
| 500 | break; |
| 501 | case SYS_UNDEFINED: |
| 502 | default: |
| 503 | i = 0; |
| 504 | break; |
| 505 | } |
| 506 | |
| 507 | /* wait frontend lock */ |
| 508 | for (; i > 0; i--) { |
| 509 | dbg("%s: LOOP=%d", __func__, i); |
| 510 | msleep(50); |
| 511 | ret = cxd2820r_read_status(fe, &status); |
| 512 | if (ret) |
| 513 | goto error; |
| 514 | |
| 515 | if (status & FE_HAS_SIGNAL) |
| 516 | break; |
| 517 | } |
| 518 | |
| 519 | /* check if we have a valid signal */ |
| 520 | if (status) { |
| 521 | priv->last_tune_failed = 0; |
| 522 | return DVBFE_ALGO_SEARCH_SUCCESS; |
| 523 | } else { |
| 524 | priv->last_tune_failed = 1; |
| 525 | return DVBFE_ALGO_SEARCH_AGAIN; |
| 526 | } |
| 527 | |
| 528 | error: |
| 529 | dbg("%s: failed:%d", __func__, ret); |
| 530 | return DVBFE_ALGO_SEARCH_ERROR; |
| 531 | } |
| 532 | |
| 533 | static int cxd2820r_get_frontend_algo(struct dvb_frontend *fe) |
| 534 | { |
| 535 | return DVBFE_ALGO_CUSTOM; |
| 536 | } |
| 537 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 538 | static void cxd2820r_release(struct dvb_frontend *fe) |
| 539 | { |
| 540 | struct cxd2820r_priv *priv = fe->demodulator_priv; |
| 541 | dbg("%s", __func__); |
| 542 | |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 543 | kfree(priv); |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 544 | return; |
| 545 | } |
| 546 | |
Steve Kerrison | 0db4bf4 | 2011-08-09 07:16:21 -0300 | [diff] [blame] | 547 | static int cxd2820r_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 548 | { |
| 549 | struct cxd2820r_priv *priv = fe->demodulator_priv; |
Steve Kerrison | 0db4bf4 | 2011-08-09 07:16:21 -0300 | [diff] [blame] | 550 | dbg("%s: %d", __func__, enable); |
| 551 | |
| 552 | /* Bit 0 of reg 0xdb in bank 0x00 controls I2C repeater */ |
| 553 | return cxd2820r_wr_reg_mask(priv, 0xdb, enable ? 1 : 0, 0x1); |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 554 | } |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 555 | |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 556 | static const struct dvb_frontend_ops cxd2820r_ops = { |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 557 | .delsys = { SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A }, |
| 558 | |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 559 | /* default: DVB-T/T2 */ |
| 560 | .info = { |
| 561 | .name = "Sony CXD2820R (DVB-T/T2)", |
| 562 | .type = FE_OFDM, |
| 563 | |
| 564 | .caps = FE_CAN_FEC_1_2 | |
| 565 | FE_CAN_FEC_2_3 | |
| 566 | FE_CAN_FEC_3_4 | |
| 567 | FE_CAN_FEC_5_6 | |
| 568 | FE_CAN_FEC_7_8 | |
| 569 | FE_CAN_FEC_AUTO | |
| 570 | FE_CAN_QPSK | |
| 571 | FE_CAN_QAM_16 | |
| 572 | FE_CAN_QAM_64 | |
| 573 | FE_CAN_QAM_256 | |
| 574 | FE_CAN_QAM_AUTO | |
| 575 | FE_CAN_TRANSMISSION_MODE_AUTO | |
| 576 | FE_CAN_GUARD_INTERVAL_AUTO | |
| 577 | FE_CAN_HIERARCHY_AUTO | |
| 578 | FE_CAN_MUTE_TS | |
| 579 | FE_CAN_2G_MODULATION |
| 580 | }, |
| 581 | |
| 582 | .release = cxd2820r_release, |
| 583 | .init = cxd2820r_init, |
| 584 | .sleep = cxd2820r_sleep, |
| 585 | |
| 586 | .get_tune_settings = cxd2820r_get_tune_settings, |
| 587 | .i2c_gate_ctrl = cxd2820r_i2c_gate_ctrl, |
| 588 | |
Mauro Carvalho Chehab | f311f68 | 2011-12-30 22:22:10 -0300 | [diff] [blame] | 589 | .get_frontend = cxd2820r_get_frontend, |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 590 | |
| 591 | .get_frontend_algo = cxd2820r_get_frontend_algo, |
| 592 | .search = cxd2820r_search, |
| 593 | |
| 594 | .read_status = cxd2820r_read_status, |
| 595 | .read_snr = cxd2820r_read_snr, |
| 596 | .read_ber = cxd2820r_read_ber, |
| 597 | .read_ucblocks = cxd2820r_read_ucblocks, |
| 598 | .read_signal_strength = cxd2820r_read_signal_strength, |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 599 | }; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 600 | |
| 601 | struct dvb_frontend *cxd2820r_attach(const struct cxd2820r_config *cfg, |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 602 | struct i2c_adapter *i2c, |
| 603 | struct dvb_frontend *fe) |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 604 | { |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 605 | struct cxd2820r_priv *priv = NULL; |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 606 | int ret; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 607 | u8 tmp; |
| 608 | |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 609 | priv = kzalloc(sizeof (struct cxd2820r_priv), GFP_KERNEL); |
| 610 | if (!priv) |
| 611 | goto error; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 612 | |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 613 | priv->i2c = i2c; |
| 614 | memcpy(&priv->cfg, cfg, sizeof (struct cxd2820r_config)); |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 615 | |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 616 | priv->bank[0] = priv->bank[1] = 0xff; |
| 617 | ret = cxd2820r_rd_reg(priv, 0x000fd, &tmp); |
| 618 | dbg("%s: chip id=%02x", __func__, tmp); |
| 619 | if (ret || tmp != 0xe1) |
| 620 | goto error; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 621 | |
Manu Abraham | 14c0386 | 2011-11-24 11:59:53 -0300 | [diff] [blame] | 622 | memcpy(&priv->fe.ops, &cxd2820r_ops, sizeof (struct dvb_frontend_ops)); |
| 623 | priv->fe.demodulator_priv = priv; |
| 624 | return &priv->fe; |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 625 | error: |
| 626 | kfree(priv); |
| 627 | return NULL; |
| 628 | } |
| 629 | EXPORT_SYMBOL(cxd2820r_attach); |
| 630 | |
Antti Palosaari | 27cfc85 | 2011-04-07 16:27:43 -0300 | [diff] [blame] | 631 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| 632 | MODULE_DESCRIPTION("Sony CXD2820R demodulator driver"); |
| 633 | MODULE_LICENSE("GPL"); |