David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 1 | /* |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 2 | * Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator |
| 3 | * LGS8913, LGS8GL5, LGS8G75 |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 4 | * experimental support LGS8G42, LGS8G52 |
| 5 | * |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 6 | * Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com> |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 7 | * Copyright (C) 2008 Sirius International (Hong Kong) Limited |
| 8 | * Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5) |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #include <asm/div64.h> |
Ben Hutchings | 7638699 | 2009-10-31 23:14:35 -0300 | [diff] [blame] | 27 | #include <linux/firmware.h> |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 28 | |
| 29 | #include "dvb_frontend.h" |
| 30 | |
| 31 | #include "lgs8gxx.h" |
| 32 | #include "lgs8gxx_priv.h" |
| 33 | |
| 34 | #define dprintk(args...) \ |
| 35 | do { \ |
| 36 | if (debug) \ |
| 37 | printk(KERN_DEBUG "lgs8gxx: " args); \ |
| 38 | } while (0) |
| 39 | |
| 40 | static int debug; |
David Wong | ba7d457 | 2009-06-11 09:38:54 -0300 | [diff] [blame] | 41 | static int fake_signal_str = 1; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 42 | |
| 43 | module_param(debug, int, 0644); |
| 44 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); |
| 45 | |
| 46 | module_param(fake_signal_str, int, 0644); |
| 47 | MODULE_PARM_DESC(fake_signal_str, "fake signal strength for LGS8913." |
David Wong | ba7d457 | 2009-06-11 09:38:54 -0300 | [diff] [blame] | 48 | "Signal strength calculation is slow.(default:on)."); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 49 | |
| 50 | /* LGS8GXX internal helper functions */ |
| 51 | |
| 52 | static int lgs8gxx_write_reg(struct lgs8gxx_state *priv, u8 reg, u8 data) |
| 53 | { |
| 54 | int ret; |
| 55 | u8 buf[] = { reg, data }; |
| 56 | struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 }; |
| 57 | |
| 58 | msg.addr = priv->config->demod_address; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 59 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75 && reg >= 0xC0) |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 60 | msg.addr += 0x02; |
| 61 | |
| 62 | if (debug >= 2) |
Joe Perches | c429e7b | 2010-10-25 23:44:25 -0300 | [diff] [blame^] | 63 | dprintk("%s: reg=0x%02X, data=0x%02X\n", __func__, reg, data); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 64 | |
| 65 | ret = i2c_transfer(priv->i2c, &msg, 1); |
| 66 | |
| 67 | if (ret != 1) |
Joe Perches | c429e7b | 2010-10-25 23:44:25 -0300 | [diff] [blame^] | 68 | dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n", |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 69 | __func__, reg, data, ret); |
| 70 | |
| 71 | return (ret != 1) ? -1 : 0; |
| 72 | } |
| 73 | |
| 74 | static int lgs8gxx_read_reg(struct lgs8gxx_state *priv, u8 reg, u8 *p_data) |
| 75 | { |
| 76 | int ret; |
| 77 | u8 dev_addr; |
| 78 | |
| 79 | u8 b0[] = { reg }; |
| 80 | u8 b1[] = { 0 }; |
| 81 | struct i2c_msg msg[] = { |
| 82 | { .flags = 0, .buf = b0, .len = 1 }, |
| 83 | { .flags = I2C_M_RD, .buf = b1, .len = 1 }, |
| 84 | }; |
| 85 | |
| 86 | dev_addr = priv->config->demod_address; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 87 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75 && reg >= 0xC0) |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 88 | dev_addr += 0x02; |
| 89 | msg[1].addr = msg[0].addr = dev_addr; |
| 90 | |
| 91 | ret = i2c_transfer(priv->i2c, msg, 2); |
| 92 | if (ret != 2) { |
Joe Perches | c429e7b | 2010-10-25 23:44:25 -0300 | [diff] [blame^] | 93 | dprintk("%s: error reg=0x%x, ret=%i\n", __func__, reg, ret); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 94 | return -1; |
| 95 | } |
| 96 | |
| 97 | *p_data = b1[0]; |
| 98 | if (debug >= 2) |
Joe Perches | c429e7b | 2010-10-25 23:44:25 -0300 | [diff] [blame^] | 99 | dprintk("%s: reg=0x%02X, data=0x%02X\n", __func__, reg, b1[0]); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | static int lgs8gxx_soft_reset(struct lgs8gxx_state *priv) |
| 104 | { |
| 105 | lgs8gxx_write_reg(priv, 0x02, 0x00); |
| 106 | msleep(1); |
| 107 | lgs8gxx_write_reg(priv, 0x02, 0x01); |
| 108 | msleep(100); |
| 109 | |
| 110 | return 0; |
| 111 | } |
| 112 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 113 | static int wait_reg_mask(struct lgs8gxx_state *priv, u8 reg, u8 mask, |
| 114 | u8 val, u8 delay, u8 tries) |
| 115 | { |
| 116 | u8 t; |
| 117 | int i; |
| 118 | |
| 119 | for (i = 0; i < tries; i++) { |
| 120 | lgs8gxx_read_reg(priv, reg, &t); |
| 121 | |
| 122 | if ((t & mask) == val) |
| 123 | return 0; |
| 124 | msleep(delay); |
| 125 | } |
| 126 | |
| 127 | return 1; |
| 128 | } |
| 129 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 130 | static int lgs8gxx_set_ad_mode(struct lgs8gxx_state *priv) |
| 131 | { |
| 132 | const struct lgs8gxx_config *config = priv->config; |
| 133 | u8 if_conf; |
| 134 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 135 | if_conf = 0x10; /* AGC output on, RF_AGC output off; */ |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 136 | |
| 137 | if_conf |= |
| 138 | ((config->ext_adc) ? 0x80 : 0x00) | |
| 139 | ((config->if_neg_center) ? 0x04 : 0x00) | |
| 140 | ((config->if_freq == 0) ? 0x08 : 0x00) | /* Baseband */ |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 141 | ((config->adc_signed) ? 0x02 : 0x00) | |
| 142 | ((config->if_neg_edge) ? 0x01 : 0x00); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 143 | |
| 144 | if (config->ext_adc && |
| 145 | (config->prod == LGS8GXX_PROD_LGS8G52)) { |
| 146 | lgs8gxx_write_reg(priv, 0xBA, 0x40); |
| 147 | } |
| 148 | |
| 149 | lgs8gxx_write_reg(priv, 0x07, if_conf); |
| 150 | |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static int lgs8gxx_set_if_freq(struct lgs8gxx_state *priv, u32 freq /*in kHz*/) |
| 155 | { |
| 156 | u64 val; |
| 157 | u32 v32; |
| 158 | u32 if_clk; |
| 159 | |
| 160 | if_clk = priv->config->if_clk_freq; |
| 161 | |
| 162 | val = freq; |
| 163 | if (freq != 0) { |
David Howells | 3ab1b9c | 2009-12-11 13:11:05 -0300 | [diff] [blame] | 164 | val <<= 32; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 165 | if (if_clk != 0) |
| 166 | do_div(val, if_clk); |
| 167 | v32 = val & 0xFFFFFFFF; |
| 168 | dprintk("Set IF Freq to %dkHz\n", freq); |
| 169 | } else { |
| 170 | v32 = 0; |
| 171 | dprintk("Set IF Freq to baseband\n"); |
| 172 | } |
| 173 | dprintk("AFC_INIT_FREQ = 0x%08X\n", v32); |
| 174 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 175 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 176 | lgs8gxx_write_reg(priv, 0x08, 0xFF & (v32)); |
| 177 | lgs8gxx_write_reg(priv, 0x09, 0xFF & (v32 >> 8)); |
| 178 | lgs8gxx_write_reg(priv, 0x0A, 0xFF & (v32 >> 16)); |
| 179 | lgs8gxx_write_reg(priv, 0x0B, 0xFF & (v32 >> 24)); |
| 180 | } else { |
| 181 | lgs8gxx_write_reg(priv, 0x09, 0xFF & (v32)); |
| 182 | lgs8gxx_write_reg(priv, 0x0A, 0xFF & (v32 >> 8)); |
| 183 | lgs8gxx_write_reg(priv, 0x0B, 0xFF & (v32 >> 16)); |
| 184 | lgs8gxx_write_reg(priv, 0x0C, 0xFF & (v32 >> 24)); |
| 185 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 190 | static int lgs8gxx_get_afc_phase(struct lgs8gxx_state *priv) |
| 191 | { |
| 192 | u64 val; |
| 193 | u32 v32 = 0; |
| 194 | u8 reg_addr, t; |
| 195 | int i; |
| 196 | |
| 197 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
| 198 | reg_addr = 0x23; |
| 199 | else |
| 200 | reg_addr = 0x48; |
| 201 | |
| 202 | for (i = 0; i < 4; i++) { |
| 203 | lgs8gxx_read_reg(priv, reg_addr, &t); |
| 204 | v32 <<= 8; |
| 205 | v32 |= t; |
| 206 | reg_addr--; |
| 207 | } |
| 208 | |
| 209 | val = v32; |
| 210 | val *= priv->config->if_clk_freq; |
David Howells | 3ab1b9c | 2009-12-11 13:11:05 -0300 | [diff] [blame] | 211 | val >>= 32; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 212 | dprintk("AFC = %u kHz\n", (u32)val); |
| 213 | return 0; |
| 214 | } |
| 215 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 216 | static int lgs8gxx_set_mode_auto(struct lgs8gxx_state *priv) |
| 217 | { |
| 218 | u8 t; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 219 | u8 prod = priv->config->prod; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 220 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 221 | if (prod == LGS8GXX_PROD_LGS8913) |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 222 | lgs8gxx_write_reg(priv, 0xC6, 0x01); |
| 223 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 224 | if (prod == LGS8GXX_PROD_LGS8G75) { |
| 225 | lgs8gxx_read_reg(priv, 0x0C, &t); |
| 226 | t &= (~0x04); |
| 227 | lgs8gxx_write_reg(priv, 0x0C, t | 0x80); |
| 228 | lgs8gxx_write_reg(priv, 0x39, 0x00); |
| 229 | lgs8gxx_write_reg(priv, 0x3D, 0x04); |
| 230 | } else if (prod == LGS8GXX_PROD_LGS8913 || |
| 231 | prod == LGS8GXX_PROD_LGS8GL5 || |
| 232 | prod == LGS8GXX_PROD_LGS8G42 || |
| 233 | prod == LGS8GXX_PROD_LGS8G52 || |
| 234 | prod == LGS8GXX_PROD_LGS8G54) { |
| 235 | lgs8gxx_read_reg(priv, 0x7E, &t); |
| 236 | lgs8gxx_write_reg(priv, 0x7E, t | 0x01); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 237 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 238 | /* clear FEC self reset */ |
| 239 | lgs8gxx_read_reg(priv, 0xC5, &t); |
| 240 | lgs8gxx_write_reg(priv, 0xC5, t & 0xE0); |
| 241 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 242 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 243 | if (prod == LGS8GXX_PROD_LGS8913) { |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 244 | /* FEC auto detect */ |
| 245 | lgs8gxx_write_reg(priv, 0xC1, 0x03); |
| 246 | |
| 247 | lgs8gxx_read_reg(priv, 0x7C, &t); |
| 248 | t = (t & 0x8C) | 0x03; |
| 249 | lgs8gxx_write_reg(priv, 0x7C, t); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 250 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 251 | /* BER test mode */ |
| 252 | lgs8gxx_read_reg(priv, 0xC3, &t); |
| 253 | t = (t & 0xEF) | 0x10; |
| 254 | lgs8gxx_write_reg(priv, 0xC3, t); |
| 255 | } |
| 256 | |
| 257 | if (priv->config->prod == LGS8GXX_PROD_LGS8G52) |
| 258 | lgs8gxx_write_reg(priv, 0xD9, 0x40); |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static int lgs8gxx_set_mode_manual(struct lgs8gxx_state *priv) |
| 264 | { |
| 265 | int ret = 0; |
| 266 | u8 t; |
| 267 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 268 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 269 | u8 t2; |
| 270 | lgs8gxx_read_reg(priv, 0x0C, &t); |
| 271 | t &= (~0x80); |
| 272 | lgs8gxx_write_reg(priv, 0x0C, t); |
| 273 | |
| 274 | lgs8gxx_read_reg(priv, 0x0C, &t); |
| 275 | lgs8gxx_read_reg(priv, 0x19, &t2); |
| 276 | |
| 277 | if (((t&0x03) == 0x01) && (t2&0x01)) { |
| 278 | lgs8gxx_write_reg(priv, 0x6E, 0x05); |
| 279 | lgs8gxx_write_reg(priv, 0x39, 0x02); |
| 280 | lgs8gxx_write_reg(priv, 0x39, 0x03); |
| 281 | lgs8gxx_write_reg(priv, 0x3D, 0x05); |
| 282 | lgs8gxx_write_reg(priv, 0x3E, 0x28); |
| 283 | lgs8gxx_write_reg(priv, 0x53, 0x80); |
| 284 | } else { |
| 285 | lgs8gxx_write_reg(priv, 0x6E, 0x3F); |
| 286 | lgs8gxx_write_reg(priv, 0x39, 0x00); |
| 287 | lgs8gxx_write_reg(priv, 0x3D, 0x04); |
| 288 | } |
| 289 | |
| 290 | lgs8gxx_soft_reset(priv); |
| 291 | return 0; |
| 292 | } |
| 293 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 294 | /* turn off auto-detect; manual settings */ |
| 295 | lgs8gxx_write_reg(priv, 0x7E, 0); |
| 296 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) |
| 297 | lgs8gxx_write_reg(priv, 0xC1, 0); |
| 298 | |
| 299 | ret = lgs8gxx_read_reg(priv, 0xC5, &t); |
| 300 | t = (t & 0xE0) | 0x06; |
| 301 | lgs8gxx_write_reg(priv, 0xC5, t); |
| 302 | |
| 303 | lgs8gxx_soft_reset(priv); |
| 304 | |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | static int lgs8gxx_is_locked(struct lgs8gxx_state *priv, u8 *locked) |
| 309 | { |
| 310 | int ret = 0; |
| 311 | u8 t; |
| 312 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 313 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
| 314 | ret = lgs8gxx_read_reg(priv, 0x13, &t); |
| 315 | else |
| 316 | ret = lgs8gxx_read_reg(priv, 0x4B, &t); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 317 | if (ret != 0) |
| 318 | return ret; |
| 319 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 320 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
| 321 | *locked = ((t & 0x80) == 0x80) ? 1 : 0; |
| 322 | else |
| 323 | *locked = ((t & 0xC0) == 0xC0) ? 1 : 0; |
| 324 | return 0; |
| 325 | } |
| 326 | |
| 327 | /* Wait for Code Acquisition Lock */ |
| 328 | static int lgs8gxx_wait_ca_lock(struct lgs8gxx_state *priv, u8 *locked) |
| 329 | { |
| 330 | int ret = 0; |
| 331 | u8 reg, mask, val; |
| 332 | |
| 333 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 334 | reg = 0x13; |
| 335 | mask = 0x80; |
| 336 | val = 0x80; |
| 337 | } else { |
| 338 | reg = 0x4B; |
| 339 | mask = 0xC0; |
| 340 | val = 0xC0; |
| 341 | } |
| 342 | |
| 343 | ret = wait_reg_mask(priv, reg, mask, val, 50, 40); |
| 344 | *locked = (ret == 0) ? 1 : 0; |
| 345 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 346 | return 0; |
| 347 | } |
| 348 | |
| 349 | static int lgs8gxx_is_autodetect_finished(struct lgs8gxx_state *priv, |
| 350 | u8 *finished) |
| 351 | { |
| 352 | int ret = 0; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 353 | u8 reg, mask, val; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 354 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 355 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 356 | reg = 0x1f; |
| 357 | mask = 0xC0; |
| 358 | val = 0x80; |
| 359 | } else { |
| 360 | reg = 0xA4; |
| 361 | mask = 0x03; |
| 362 | val = 0x01; |
| 363 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 364 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 365 | ret = wait_reg_mask(priv, reg, mask, val, 10, 20); |
| 366 | *finished = (ret == 0) ? 1 : 0; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 367 | |
| 368 | return 0; |
| 369 | } |
| 370 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 371 | static int lgs8gxx_autolock_gi(struct lgs8gxx_state *priv, u8 gi, u8 cpn, |
| 372 | u8 *locked) |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 373 | { |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 374 | int err = 0; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 375 | u8 ad_fini = 0; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 376 | u8 t1, t2; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 377 | |
| 378 | if (gi == GI_945) |
| 379 | dprintk("try GI 945\n"); |
| 380 | else if (gi == GI_595) |
| 381 | dprintk("try GI 595\n"); |
| 382 | else if (gi == GI_420) |
| 383 | dprintk("try GI 420\n"); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 384 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 385 | lgs8gxx_read_reg(priv, 0x0C, &t1); |
| 386 | lgs8gxx_read_reg(priv, 0x18, &t2); |
| 387 | t1 &= ~(GI_MASK); |
| 388 | t1 |= gi; |
| 389 | t2 &= 0xFE; |
| 390 | t2 |= cpn ? 0x01 : 0x00; |
| 391 | lgs8gxx_write_reg(priv, 0x0C, t1); |
| 392 | lgs8gxx_write_reg(priv, 0x18, t2); |
| 393 | } else { |
| 394 | lgs8gxx_write_reg(priv, 0x04, gi); |
| 395 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 396 | lgs8gxx_soft_reset(priv); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 397 | err = lgs8gxx_wait_ca_lock(priv, locked); |
| 398 | if (err || !(*locked)) |
| 399 | return err; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 400 | err = lgs8gxx_is_autodetect_finished(priv, &ad_fini); |
| 401 | if (err != 0) |
| 402 | return err; |
| 403 | if (ad_fini) { |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 404 | dprintk("auto detect finished\n"); |
| 405 | } else |
| 406 | *locked = 0; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 407 | |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | static int lgs8gxx_auto_detect(struct lgs8gxx_state *priv, |
| 412 | u8 *detected_param, u8 *gi) |
| 413 | { |
| 414 | int i, j; |
| 415 | int err = 0; |
| 416 | u8 locked = 0, tmp_gi; |
| 417 | |
| 418 | dprintk("%s\n", __func__); |
| 419 | |
| 420 | lgs8gxx_set_mode_auto(priv); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 421 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 422 | lgs8gxx_write_reg(priv, 0x67, 0xAA); |
| 423 | lgs8gxx_write_reg(priv, 0x6E, 0x3F); |
| 424 | } else { |
| 425 | /* Guard Interval */ |
| 426 | lgs8gxx_write_reg(priv, 0x03, 00); |
| 427 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 428 | |
| 429 | for (i = 0; i < 2; i++) { |
| 430 | for (j = 0; j < 2; j++) { |
| 431 | tmp_gi = GI_945; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 432 | err = lgs8gxx_autolock_gi(priv, GI_945, j, &locked); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 433 | if (err) |
| 434 | goto out; |
| 435 | if (locked) |
| 436 | goto locked; |
| 437 | } |
| 438 | for (j = 0; j < 2; j++) { |
| 439 | tmp_gi = GI_420; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 440 | err = lgs8gxx_autolock_gi(priv, GI_420, j, &locked); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 441 | if (err) |
| 442 | goto out; |
| 443 | if (locked) |
| 444 | goto locked; |
| 445 | } |
| 446 | tmp_gi = GI_595; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 447 | err = lgs8gxx_autolock_gi(priv, GI_595, 1, &locked); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 448 | if (err) |
| 449 | goto out; |
| 450 | if (locked) |
| 451 | goto locked; |
| 452 | } |
| 453 | |
| 454 | locked: |
| 455 | if ((err == 0) && (locked == 1)) { |
| 456 | u8 t; |
| 457 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 458 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75) { |
| 459 | lgs8gxx_read_reg(priv, 0xA2, &t); |
| 460 | *detected_param = t; |
| 461 | } else { |
| 462 | lgs8gxx_read_reg(priv, 0x1F, &t); |
| 463 | *detected_param = t & 0x3F; |
| 464 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 465 | |
| 466 | if (tmp_gi == GI_945) |
| 467 | dprintk("GI 945 locked\n"); |
| 468 | else if (tmp_gi == GI_595) |
| 469 | dprintk("GI 595 locked\n"); |
| 470 | else if (tmp_gi == GI_420) |
| 471 | dprintk("GI 420 locked\n"); |
| 472 | *gi = tmp_gi; |
| 473 | } |
| 474 | if (!locked) |
| 475 | err = -1; |
| 476 | |
| 477 | out: |
| 478 | return err; |
| 479 | } |
| 480 | |
| 481 | static void lgs8gxx_auto_lock(struct lgs8gxx_state *priv) |
| 482 | { |
| 483 | s8 err; |
| 484 | u8 gi = 0x2; |
| 485 | u8 detected_param = 0; |
| 486 | |
| 487 | err = lgs8gxx_auto_detect(priv, &detected_param, &gi); |
| 488 | |
| 489 | if (err != 0) { |
| 490 | dprintk("lgs8gxx_auto_detect failed\n"); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 491 | } else |
| 492 | dprintk("detected param = 0x%02X\n", detected_param); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 493 | |
| 494 | /* Apply detected parameters */ |
| 495 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) { |
| 496 | u8 inter_leave_len = detected_param & TIM_MASK ; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 497 | /* Fix 8913 time interleaver detection bug */ |
| 498 | inter_leave_len = (inter_leave_len == TIM_MIDDLE) ? 0x60 : 0x40; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 499 | detected_param &= CF_MASK | SC_MASK | LGS_FEC_MASK; |
| 500 | detected_param |= inter_leave_len; |
| 501 | } |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 502 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 503 | u8 t; |
| 504 | lgs8gxx_read_reg(priv, 0x19, &t); |
| 505 | t &= 0x81; |
| 506 | t |= detected_param << 1; |
| 507 | lgs8gxx_write_reg(priv, 0x19, t); |
| 508 | } else { |
| 509 | lgs8gxx_write_reg(priv, 0x7D, detected_param); |
| 510 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) |
| 511 | lgs8gxx_write_reg(priv, 0xC0, detected_param); |
| 512 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 513 | /* lgs8gxx_soft_reset(priv); */ |
| 514 | |
| 515 | /* Enter manual mode */ |
| 516 | lgs8gxx_set_mode_manual(priv); |
| 517 | |
| 518 | switch (gi) { |
| 519 | case GI_945: |
| 520 | priv->curr_gi = 945; break; |
| 521 | case GI_595: |
| 522 | priv->curr_gi = 595; break; |
| 523 | case GI_420: |
| 524 | priv->curr_gi = 420; break; |
| 525 | default: |
| 526 | priv->curr_gi = 945; break; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | static int lgs8gxx_set_mpeg_mode(struct lgs8gxx_state *priv, |
| 531 | u8 serial, u8 clk_pol, u8 clk_gated) |
| 532 | { |
| 533 | int ret = 0; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 534 | u8 t, reg_addr; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 535 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 536 | reg_addr = (priv->config->prod == LGS8GXX_PROD_LGS8G75) ? 0x30 : 0xC2; |
| 537 | ret = lgs8gxx_read_reg(priv, reg_addr, &t); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 538 | if (ret != 0) |
| 539 | return ret; |
| 540 | |
| 541 | t &= 0xF8; |
| 542 | t |= serial ? TS_SERIAL : TS_PARALLEL; |
| 543 | t |= clk_pol ? TS_CLK_INVERTED : TS_CLK_NORMAL; |
| 544 | t |= clk_gated ? TS_CLK_GATED : TS_CLK_FREERUN; |
| 545 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 546 | ret = lgs8gxx_write_reg(priv, reg_addr, t); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 547 | if (ret != 0) |
| 548 | return ret; |
| 549 | |
| 550 | return 0; |
| 551 | } |
| 552 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 553 | /* A/D input peak-to-peak voltage range */ |
| 554 | static int lgs8g75_set_adc_vpp(struct lgs8gxx_state *priv, |
| 555 | u8 sel) |
| 556 | { |
| 557 | u8 r26 = 0x73, r27 = 0x90; |
| 558 | |
| 559 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75) |
| 560 | return 0; |
| 561 | |
| 562 | r26 |= (sel & 0x01) << 7; |
| 563 | r27 |= (sel & 0x02) >> 1; |
| 564 | lgs8gxx_write_reg(priv, 0x26, r26); |
| 565 | lgs8gxx_write_reg(priv, 0x27, r27); |
| 566 | |
| 567 | return 0; |
| 568 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 569 | |
| 570 | /* LGS8913 demod frontend functions */ |
| 571 | |
| 572 | static int lgs8913_init(struct lgs8gxx_state *priv) |
| 573 | { |
| 574 | u8 t; |
| 575 | |
| 576 | /* LGS8913 specific */ |
| 577 | lgs8gxx_write_reg(priv, 0xc1, 0x3); |
| 578 | |
| 579 | lgs8gxx_read_reg(priv, 0x7c, &t); |
| 580 | lgs8gxx_write_reg(priv, 0x7c, (t&0x8c) | 0x3); |
| 581 | |
| 582 | /* LGS8913 specific */ |
| 583 | lgs8gxx_read_reg(priv, 0xc3, &t); |
| 584 | lgs8gxx_write_reg(priv, 0xc3, t&0x10); |
| 585 | |
| 586 | |
| 587 | return 0; |
| 588 | } |
| 589 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 590 | static int lgs8g75_init_data(struct lgs8gxx_state *priv) |
| 591 | { |
Ben Hutchings | 7638699 | 2009-10-31 23:14:35 -0300 | [diff] [blame] | 592 | const struct firmware *fw; |
| 593 | int rc; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 594 | int i; |
| 595 | |
Ben Hutchings | 7638699 | 2009-10-31 23:14:35 -0300 | [diff] [blame] | 596 | rc = request_firmware(&fw, "lgs8g75.fw", &priv->i2c->dev); |
| 597 | if (rc) |
| 598 | return rc; |
| 599 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 600 | lgs8gxx_write_reg(priv, 0xC6, 0x40); |
| 601 | |
| 602 | lgs8gxx_write_reg(priv, 0x3D, 0x04); |
| 603 | lgs8gxx_write_reg(priv, 0x39, 0x00); |
| 604 | |
| 605 | lgs8gxx_write_reg(priv, 0x3A, 0x00); |
| 606 | lgs8gxx_write_reg(priv, 0x38, 0x00); |
| 607 | lgs8gxx_write_reg(priv, 0x3B, 0x00); |
| 608 | lgs8gxx_write_reg(priv, 0x38, 0x00); |
| 609 | |
Ben Hutchings | 7638699 | 2009-10-31 23:14:35 -0300 | [diff] [blame] | 610 | for (i = 0; i < fw->size; i++) { |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 611 | lgs8gxx_write_reg(priv, 0x38, 0x00); |
| 612 | lgs8gxx_write_reg(priv, 0x3A, (u8)(i&0xff)); |
| 613 | lgs8gxx_write_reg(priv, 0x3B, (u8)(i>>8)); |
Ben Hutchings | 7638699 | 2009-10-31 23:14:35 -0300 | [diff] [blame] | 614 | lgs8gxx_write_reg(priv, 0x3C, fw->data[i]); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | lgs8gxx_write_reg(priv, 0x38, 0x00); |
| 618 | |
Ben Hutchings | 7638699 | 2009-10-31 23:14:35 -0300 | [diff] [blame] | 619 | release_firmware(fw); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 620 | return 0; |
| 621 | } |
| 622 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 623 | static int lgs8gxx_init(struct dvb_frontend *fe) |
| 624 | { |
| 625 | struct lgs8gxx_state *priv = |
| 626 | (struct lgs8gxx_state *)fe->demodulator_priv; |
| 627 | const struct lgs8gxx_config *config = priv->config; |
| 628 | u8 data = 0; |
| 629 | s8 err; |
| 630 | dprintk("%s\n", __func__); |
| 631 | |
| 632 | lgs8gxx_read_reg(priv, 0, &data); |
| 633 | dprintk("reg 0 = 0x%02X\n", data); |
| 634 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 635 | if (config->prod == LGS8GXX_PROD_LGS8G75) |
| 636 | lgs8g75_set_adc_vpp(priv, config->adc_vpp); |
| 637 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 638 | /* Setup MPEG output format */ |
| 639 | err = lgs8gxx_set_mpeg_mode(priv, config->serial_ts, |
| 640 | config->ts_clk_pol, |
| 641 | config->ts_clk_gated); |
| 642 | if (err != 0) |
| 643 | return -EIO; |
| 644 | |
| 645 | if (config->prod == LGS8GXX_PROD_LGS8913) |
| 646 | lgs8913_init(priv); |
| 647 | lgs8gxx_set_if_freq(priv, priv->config->if_freq); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 648 | lgs8gxx_set_ad_mode(priv); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 649 | |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | static void lgs8gxx_release(struct dvb_frontend *fe) |
| 654 | { |
| 655 | struct lgs8gxx_state *state = fe->demodulator_priv; |
| 656 | dprintk("%s\n", __func__); |
| 657 | |
| 658 | kfree(state); |
| 659 | } |
| 660 | |
| 661 | |
lawrence rust | 2e4e98e | 2010-08-25 09:50:20 -0300 | [diff] [blame] | 662 | static int lgs8gxx_write(struct dvb_frontend *fe, const u8 buf[], int len) |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 663 | { |
| 664 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
| 665 | |
| 666 | if (len != 2) |
| 667 | return -EINVAL; |
| 668 | |
| 669 | return lgs8gxx_write_reg(priv, buf[0], buf[1]); |
| 670 | } |
| 671 | |
| 672 | static int lgs8gxx_set_fe(struct dvb_frontend *fe, |
| 673 | struct dvb_frontend_parameters *fe_params) |
| 674 | { |
| 675 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
| 676 | |
| 677 | dprintk("%s\n", __func__); |
| 678 | |
| 679 | /* set frequency */ |
| 680 | if (fe->ops.tuner_ops.set_params) { |
| 681 | fe->ops.tuner_ops.set_params(fe, fe_params); |
| 682 | if (fe->ops.i2c_gate_ctrl) |
| 683 | fe->ops.i2c_gate_ctrl(fe, 0); |
| 684 | } |
| 685 | |
| 686 | /* start auto lock */ |
| 687 | lgs8gxx_auto_lock(priv); |
| 688 | |
| 689 | msleep(10); |
| 690 | |
| 691 | return 0; |
| 692 | } |
| 693 | |
| 694 | static int lgs8gxx_get_fe(struct dvb_frontend *fe, |
| 695 | struct dvb_frontend_parameters *fe_params) |
| 696 | { |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 697 | dprintk("%s\n", __func__); |
| 698 | |
| 699 | /* TODO: get real readings from device */ |
| 700 | /* inversion status */ |
| 701 | fe_params->inversion = INVERSION_OFF; |
| 702 | |
| 703 | /* bandwidth */ |
| 704 | fe_params->u.ofdm.bandwidth = BANDWIDTH_8_MHZ; |
| 705 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 706 | fe_params->u.ofdm.code_rate_HP = FEC_AUTO; |
| 707 | fe_params->u.ofdm.code_rate_LP = FEC_AUTO; |
| 708 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 709 | fe_params->u.ofdm.constellation = QAM_AUTO; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 710 | |
| 711 | /* transmission mode */ |
| 712 | fe_params->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO; |
| 713 | |
| 714 | /* guard interval */ |
| 715 | fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO; |
| 716 | |
| 717 | /* hierarchy */ |
| 718 | fe_params->u.ofdm.hierarchy_information = HIERARCHY_NONE; |
| 719 | |
| 720 | return 0; |
| 721 | } |
| 722 | |
| 723 | static |
| 724 | int lgs8gxx_get_tune_settings(struct dvb_frontend *fe, |
| 725 | struct dvb_frontend_tune_settings *fesettings) |
| 726 | { |
| 727 | /* FIXME: copy from tda1004x.c */ |
| 728 | fesettings->min_delay_ms = 800; |
| 729 | fesettings->step_size = 0; |
| 730 | fesettings->max_drift = 0; |
| 731 | return 0; |
| 732 | } |
| 733 | |
| 734 | static int lgs8gxx_read_status(struct dvb_frontend *fe, fe_status_t *fe_status) |
| 735 | { |
| 736 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
| 737 | s8 ret; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 738 | u8 t, locked = 0; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 739 | |
| 740 | dprintk("%s\n", __func__); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 741 | *fe_status = 0; |
| 742 | |
| 743 | lgs8gxx_get_afc_phase(priv); |
| 744 | lgs8gxx_is_locked(priv, &locked); |
| 745 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 746 | if (locked) |
| 747 | *fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
| 748 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; |
| 749 | return 0; |
| 750 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 751 | |
| 752 | ret = lgs8gxx_read_reg(priv, 0x4B, &t); |
| 753 | if (ret != 0) |
| 754 | return -EIO; |
| 755 | |
| 756 | dprintk("Reg 0x4B: 0x%02X\n", t); |
| 757 | |
| 758 | *fe_status = 0; |
| 759 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) { |
| 760 | if ((t & 0x40) == 0x40) |
| 761 | *fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER; |
| 762 | if ((t & 0x80) == 0x80) |
| 763 | *fe_status |= FE_HAS_VITERBI | FE_HAS_SYNC | |
| 764 | FE_HAS_LOCK; |
| 765 | } else { |
| 766 | if ((t & 0x80) == 0x80) |
| 767 | *fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
| 768 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; |
| 769 | } |
| 770 | |
| 771 | /* success */ |
| 772 | dprintk("%s: fe_status=0x%x\n", __func__, *fe_status); |
| 773 | return 0; |
| 774 | } |
| 775 | |
| 776 | static int lgs8gxx_read_signal_agc(struct lgs8gxx_state *priv, u16 *signal) |
| 777 | { |
| 778 | u16 v; |
| 779 | u8 agc_lvl[2], cat; |
| 780 | |
| 781 | dprintk("%s()\n", __func__); |
| 782 | lgs8gxx_read_reg(priv, 0x3F, &agc_lvl[0]); |
| 783 | lgs8gxx_read_reg(priv, 0x3E, &agc_lvl[1]); |
| 784 | |
| 785 | v = agc_lvl[0]; |
| 786 | v <<= 8; |
| 787 | v |= agc_lvl[1]; |
| 788 | |
| 789 | dprintk("agc_lvl: 0x%04X\n", v); |
| 790 | |
| 791 | if (v < 0x100) |
| 792 | cat = 0; |
| 793 | else if (v < 0x190) |
| 794 | cat = 5; |
| 795 | else if (v < 0x2A8) |
| 796 | cat = 4; |
| 797 | else if (v < 0x381) |
| 798 | cat = 3; |
| 799 | else if (v < 0x400) |
| 800 | cat = 2; |
| 801 | else if (v == 0x400) |
| 802 | cat = 1; |
| 803 | else |
| 804 | cat = 0; |
| 805 | |
David Wong | 6762d95 | 2009-06-11 09:39:04 -0300 | [diff] [blame] | 806 | *signal = cat * 65535 / 5; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 807 | |
| 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | static int lgs8913_read_signal_strength(struct lgs8gxx_state *priv, u16 *signal) |
| 812 | { |
| 813 | u8 t; s8 ret; |
| 814 | s16 max_strength = 0; |
| 815 | u8 str; |
| 816 | u16 i, gi = priv->curr_gi; |
| 817 | |
| 818 | dprintk("%s\n", __func__); |
| 819 | |
| 820 | ret = lgs8gxx_read_reg(priv, 0x4B, &t); |
| 821 | if (ret != 0) |
| 822 | return -EIO; |
| 823 | |
| 824 | if (fake_signal_str) { |
| 825 | if ((t & 0xC0) == 0xC0) { |
David Wong | 6762d95 | 2009-06-11 09:39:04 -0300 | [diff] [blame] | 826 | dprintk("Fake signal strength\n"); |
| 827 | *signal = 0x7FFF; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 828 | } else |
| 829 | *signal = 0; |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | dprintk("gi = %d\n", gi); |
| 834 | for (i = 0; i < gi; i++) { |
| 835 | |
| 836 | if ((i & 0xFF) == 0) |
| 837 | lgs8gxx_write_reg(priv, 0x84, 0x03 & (i >> 8)); |
| 838 | lgs8gxx_write_reg(priv, 0x83, i & 0xFF); |
| 839 | |
| 840 | lgs8gxx_read_reg(priv, 0x94, &str); |
| 841 | if (max_strength < str) |
| 842 | max_strength = str; |
| 843 | } |
| 844 | |
| 845 | *signal = max_strength; |
| 846 | dprintk("%s: signal=0x%02X\n", __func__, *signal); |
| 847 | |
| 848 | lgs8gxx_read_reg(priv, 0x95, &t); |
| 849 | dprintk("%s: AVG Noise=0x%02X\n", __func__, t); |
| 850 | |
| 851 | return 0; |
| 852 | } |
| 853 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 854 | static int lgs8g75_read_signal_strength(struct lgs8gxx_state *priv, u16 *signal) |
| 855 | { |
| 856 | u8 t; |
| 857 | s16 v = 0; |
| 858 | |
| 859 | dprintk("%s\n", __func__); |
| 860 | |
| 861 | lgs8gxx_read_reg(priv, 0xB1, &t); |
| 862 | v |= t; |
| 863 | v <<= 8; |
| 864 | lgs8gxx_read_reg(priv, 0xB0, &t); |
| 865 | v |= t; |
| 866 | |
| 867 | *signal = v; |
| 868 | dprintk("%s: signal=0x%02X\n", __func__, *signal); |
| 869 | |
| 870 | return 0; |
| 871 | } |
| 872 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 873 | static int lgs8gxx_read_signal_strength(struct dvb_frontend *fe, u16 *signal) |
| 874 | { |
| 875 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
| 876 | |
| 877 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) |
| 878 | return lgs8913_read_signal_strength(priv, signal); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 879 | else if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
| 880 | return lgs8g75_read_signal_strength(priv, signal); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 881 | else |
| 882 | return lgs8gxx_read_signal_agc(priv, signal); |
| 883 | } |
| 884 | |
| 885 | static int lgs8gxx_read_snr(struct dvb_frontend *fe, u16 *snr) |
| 886 | { |
| 887 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
| 888 | u8 t; |
| 889 | *snr = 0; |
| 890 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 891 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
| 892 | lgs8gxx_read_reg(priv, 0x34, &t); |
| 893 | else |
| 894 | lgs8gxx_read_reg(priv, 0x95, &t); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 895 | dprintk("AVG Noise=0x%02X\n", t); |
| 896 | *snr = 256 - t; |
| 897 | *snr <<= 8; |
| 898 | dprintk("snr=0x%x\n", *snr); |
| 899 | |
| 900 | return 0; |
| 901 | } |
| 902 | |
| 903 | static int lgs8gxx_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
| 904 | { |
| 905 | *ucblocks = 0; |
| 906 | dprintk("%s: ucblocks=0x%x\n", __func__, *ucblocks); |
| 907 | return 0; |
| 908 | } |
| 909 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 910 | static void packet_counter_start(struct lgs8gxx_state *priv) |
| 911 | { |
| 912 | u8 orig, t; |
| 913 | |
| 914 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 915 | lgs8gxx_read_reg(priv, 0x30, &orig); |
| 916 | orig &= 0xE7; |
| 917 | t = orig | 0x10; |
| 918 | lgs8gxx_write_reg(priv, 0x30, t); |
| 919 | t = orig | 0x18; |
| 920 | lgs8gxx_write_reg(priv, 0x30, t); |
| 921 | t = orig | 0x10; |
| 922 | lgs8gxx_write_reg(priv, 0x30, t); |
| 923 | } else { |
| 924 | lgs8gxx_write_reg(priv, 0xC6, 0x01); |
| 925 | lgs8gxx_write_reg(priv, 0xC6, 0x41); |
| 926 | lgs8gxx_write_reg(priv, 0xC6, 0x01); |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | static void packet_counter_stop(struct lgs8gxx_state *priv) |
| 931 | { |
| 932 | u8 t; |
| 933 | |
| 934 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 935 | lgs8gxx_read_reg(priv, 0x30, &t); |
| 936 | t &= 0xE7; |
| 937 | lgs8gxx_write_reg(priv, 0x30, t); |
| 938 | } else { |
| 939 | lgs8gxx_write_reg(priv, 0xC6, 0x81); |
| 940 | } |
| 941 | } |
| 942 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 943 | static int lgs8gxx_read_ber(struct dvb_frontend *fe, u32 *ber) |
| 944 | { |
| 945 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 946 | u8 reg_err, reg_total, t; |
| 947 | u32 total_cnt = 0, err_cnt = 0; |
| 948 | int i; |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 949 | |
| 950 | dprintk("%s\n", __func__); |
| 951 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 952 | packet_counter_start(priv); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 953 | msleep(200); |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 954 | packet_counter_stop(priv); |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 955 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 956 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
| 957 | reg_total = 0x28; reg_err = 0x2C; |
| 958 | } else { |
| 959 | reg_total = 0xD0; reg_err = 0xD4; |
| 960 | } |
| 961 | |
| 962 | for (i = 0; i < 4; i++) { |
| 963 | total_cnt <<= 8; |
| 964 | lgs8gxx_read_reg(priv, reg_total+3-i, &t); |
| 965 | total_cnt |= t; |
| 966 | } |
| 967 | for (i = 0; i < 4; i++) { |
| 968 | err_cnt <<= 8; |
| 969 | lgs8gxx_read_reg(priv, reg_err+3-i, &t); |
| 970 | err_cnt |= t; |
| 971 | } |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 972 | dprintk("error=%d total=%d\n", err_cnt, total_cnt); |
| 973 | |
| 974 | if (total_cnt == 0) |
| 975 | *ber = 0; |
| 976 | else |
| 977 | *ber = err_cnt * 100 / total_cnt; |
| 978 | |
| 979 | dprintk("%s: ber=0x%x\n", __func__, *ber); |
| 980 | return 0; |
| 981 | } |
| 982 | |
| 983 | static int lgs8gxx_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) |
| 984 | { |
| 985 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
| 986 | |
| 987 | if (priv->config->tuner_address == 0) |
| 988 | return 0; |
| 989 | if (enable) { |
| 990 | u8 v = 0x80 | priv->config->tuner_address; |
| 991 | return lgs8gxx_write_reg(priv, 0x01, v); |
| 992 | } |
| 993 | return lgs8gxx_write_reg(priv, 0x01, 0); |
| 994 | } |
| 995 | |
| 996 | static struct dvb_frontend_ops lgs8gxx_ops = { |
| 997 | .info = { |
| 998 | .name = "Legend Silicon LGS8913/LGS8GXX DMB-TH", |
| 999 | .type = FE_OFDM, |
| 1000 | .frequency_min = 474000000, |
| 1001 | .frequency_max = 858000000, |
| 1002 | .frequency_stepsize = 10000, |
| 1003 | .caps = |
| 1004 | FE_CAN_FEC_AUTO | |
| 1005 | FE_CAN_QAM_AUTO | |
| 1006 | FE_CAN_TRANSMISSION_MODE_AUTO | |
| 1007 | FE_CAN_GUARD_INTERVAL_AUTO |
| 1008 | }, |
| 1009 | |
| 1010 | .release = lgs8gxx_release, |
| 1011 | |
| 1012 | .init = lgs8gxx_init, |
| 1013 | .write = lgs8gxx_write, |
| 1014 | .i2c_gate_ctrl = lgs8gxx_i2c_gate_ctrl, |
| 1015 | |
| 1016 | .set_frontend = lgs8gxx_set_fe, |
| 1017 | .get_frontend = lgs8gxx_get_fe, |
| 1018 | .get_tune_settings = lgs8gxx_get_tune_settings, |
| 1019 | |
| 1020 | .read_status = lgs8gxx_read_status, |
| 1021 | .read_ber = lgs8gxx_read_ber, |
| 1022 | .read_signal_strength = lgs8gxx_read_signal_strength, |
| 1023 | .read_snr = lgs8gxx_read_snr, |
| 1024 | .read_ucblocks = lgs8gxx_read_ucblocks, |
| 1025 | }; |
| 1026 | |
| 1027 | struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, |
| 1028 | struct i2c_adapter *i2c) |
| 1029 | { |
| 1030 | struct lgs8gxx_state *priv = NULL; |
| 1031 | u8 data = 0; |
| 1032 | |
| 1033 | dprintk("%s()\n", __func__); |
| 1034 | |
| 1035 | if (config == NULL || i2c == NULL) |
| 1036 | return NULL; |
| 1037 | |
| 1038 | priv = kzalloc(sizeof(struct lgs8gxx_state), GFP_KERNEL); |
| 1039 | if (priv == NULL) |
| 1040 | goto error_out; |
| 1041 | |
| 1042 | priv->config = config; |
| 1043 | priv->i2c = i2c; |
| 1044 | |
| 1045 | /* check if the demod is there */ |
| 1046 | if (lgs8gxx_read_reg(priv, 0, &data) != 0) { |
| 1047 | dprintk("%s lgs8gxx not found at i2c addr 0x%02X\n", |
| 1048 | __func__, priv->config->demod_address); |
| 1049 | goto error_out; |
| 1050 | } |
| 1051 | |
| 1052 | lgs8gxx_read_reg(priv, 1, &data); |
| 1053 | |
| 1054 | memcpy(&priv->frontend.ops, &lgs8gxx_ops, |
| 1055 | sizeof(struct dvb_frontend_ops)); |
| 1056 | priv->frontend.demodulator_priv = priv; |
| 1057 | |
David Wong | b80dc1c | 2009-06-17 01:38:10 -0300 | [diff] [blame] | 1058 | if (config->prod == LGS8GXX_PROD_LGS8G75) |
| 1059 | lgs8g75_init_data(priv); |
| 1060 | |
David Wong | f15da16 | 2009-04-01 04:35:10 -0300 | [diff] [blame] | 1061 | return &priv->frontend; |
| 1062 | |
| 1063 | error_out: |
| 1064 | dprintk("%s() error_out\n", __func__); |
| 1065 | kfree(priv); |
| 1066 | return NULL; |
| 1067 | |
| 1068 | } |
| 1069 | EXPORT_SYMBOL(lgs8gxx_attach); |
| 1070 | |
| 1071 | MODULE_DESCRIPTION("Legend Silicon LGS8913/LGS8GXX DMB-TH demodulator driver"); |
| 1072 | MODULE_AUTHOR("David T. L. Wong <davidtlwong@gmail.com>"); |
| 1073 | MODULE_LICENSE("GPL"); |