Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 1 | /* |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 2 | * Support for LGDT3302 and LGDT3303 - VSB/QAM |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net> |
| 5 | * |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 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 |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * NOTES ABOUT THIS DRIVER |
| 24 | * |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 25 | * This Linux driver supports: |
| 26 | * DViCO FusionHDTV 3 Gold-Q |
| 27 | * DViCO FusionHDTV 3 Gold-T |
| 28 | * DViCO FusionHDTV 5 Gold |
Michael Krufky | 3cff00d | 2005-11-08 21:35:12 -0800 | [diff] [blame] | 29 | * DViCO FusionHDTV 5 Lite |
Michael Krufky | d8e6acf | 2006-01-09 15:32:42 -0200 | [diff] [blame] | 30 | * DViCO FusionHDTV 5 USB Gold |
Michael Krufky | c0b11b9 | 2005-11-08 21:35:32 -0800 | [diff] [blame] | 31 | * Air2PC/AirStar 2 ATSC 3rd generation (HD5000) |
Michael Krufky | 20fe4f65 | 2006-04-10 09:40:40 -0300 | [diff] [blame] | 32 | * pcHDTV HD5500 |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 33 | * |
| 34 | * TODO: |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 35 | * signal strength always returns 0. |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 36 | * |
| 37 | */ |
| 38 | |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 39 | #include <linux/kernel.h> |
| 40 | #include <linux/module.h> |
| 41 | #include <linux/moduleparam.h> |
| 42 | #include <linux/init.h> |
| 43 | #include <linux/delay.h> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 44 | #include <linux/string.h> |
| 45 | #include <linux/slab.h> |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 46 | #include <asm/byteorder.h> |
| 47 | |
| 48 | #include "dvb_frontend.h" |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 49 | #include "lgdt330x_priv.h" |
| 50 | #include "lgdt330x.h" |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 51 | |
| 52 | static int debug = 0; |
| 53 | module_param(debug, int, 0644); |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 54 | MODULE_PARM_DESC(debug,"Turn on/off lgdt330x frontend debugging (default:off)."); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 55 | #define dprintk(args...) \ |
| 56 | do { \ |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 57 | if (debug) printk(KERN_DEBUG "lgdt330x: " args); \ |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 58 | } while (0) |
| 59 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 60 | struct lgdt330x_state |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 61 | { |
| 62 | struct i2c_adapter* i2c; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 63 | |
| 64 | /* Configuration settings */ |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 65 | const struct lgdt330x_config* config; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 66 | |
| 67 | struct dvb_frontend frontend; |
| 68 | |
| 69 | /* Demodulator private data */ |
| 70 | fe_modulation_t current_modulation; |
| 71 | |
| 72 | /* Tuner private data */ |
| 73 | u32 current_frequency; |
| 74 | }; |
| 75 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 76 | static int i2c_write_demod_bytes (struct lgdt330x_state* state, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 77 | u8 *buf, /* data bytes to send */ |
| 78 | int len /* number of bytes to send */ ) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 79 | { |
Michael Krufky | b6aef07 | 2005-07-27 11:45:54 -0700 | [diff] [blame] | 80 | struct i2c_msg msg = |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 81 | { .addr = state->config->demod_address, |
| 82 | .flags = 0, |
| 83 | .buf = buf, |
| 84 | .len = 2 }; |
Michael Krufky | b6aef07 | 2005-07-27 11:45:54 -0700 | [diff] [blame] | 85 | int i; |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 86 | int err; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 87 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 88 | for (i=0; i<len-1; i+=2){ |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 89 | if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 90 | printk(KERN_WARNING "lgdt330x: %s error (addr %02x <- %02x, err = %i)\n", __FUNCTION__, msg.buf[0], msg.buf[1], err); |
Michael Krufky | 58ba006 | 2005-07-12 13:58:37 -0700 | [diff] [blame] | 91 | if (err < 0) |
| 92 | return err; |
| 93 | else |
| 94 | return -EREMOTEIO; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 95 | } |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 96 | msg.buf += 2; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 97 | } |
| 98 | return 0; |
| 99 | } |
Michael Krufky | b6aef07 | 2005-07-27 11:45:54 -0700 | [diff] [blame] | 100 | |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 101 | /* |
| 102 | * This routine writes the register (reg) to the demod bus |
| 103 | * then reads the data returned for (len) bytes. |
| 104 | */ |
| 105 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 106 | static u8 i2c_read_demod_bytes (struct lgdt330x_state* state, |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 107 | enum I2C_REG reg, u8* buf, int len) |
| 108 | { |
| 109 | u8 wr [] = { reg }; |
| 110 | struct i2c_msg msg [] = { |
| 111 | { .addr = state->config->demod_address, |
| 112 | .flags = 0, .buf = wr, .len = 1 }, |
| 113 | { .addr = state->config->demod_address, |
| 114 | .flags = I2C_M_RD, .buf = buf, .len = len }, |
| 115 | }; |
| 116 | int ret; |
| 117 | ret = i2c_transfer(state->i2c, msg, 2); |
| 118 | if (ret != 2) { |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 119 | printk(KERN_WARNING "lgdt330x: %s: addr 0x%02x select 0x%02x error (ret == %i)\n", __FUNCTION__, state->config->demod_address, reg, ret); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 120 | } else { |
| 121 | ret = 0; |
| 122 | } |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | /* Software reset */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 127 | static int lgdt3302_SwReset(struct lgdt330x_state* state) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 128 | { |
| 129 | u8 ret; |
| 130 | u8 reset[] = { |
| 131 | IRQ_MASK, |
| 132 | 0x00 /* bit 6 is active low software reset |
| 133 | * bits 5-0 are 1 to mask interrupts */ |
| 134 | }; |
| 135 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 136 | ret = i2c_write_demod_bytes(state, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 137 | reset, sizeof(reset)); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 138 | if (ret == 0) { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 139 | |
| 140 | /* force reset high (inactive) and unmask interrupts */ |
| 141 | reset[1] = 0x7f; |
| 142 | ret = i2c_write_demod_bytes(state, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 143 | reset, sizeof(reset)); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 144 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 145 | return ret; |
| 146 | } |
| 147 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 148 | static int lgdt3303_SwReset(struct lgdt330x_state* state) |
| 149 | { |
| 150 | u8 ret; |
| 151 | u8 reset[] = { |
| 152 | 0x02, |
| 153 | 0x00 /* bit 0 is active low software reset */ |
| 154 | }; |
| 155 | |
| 156 | ret = i2c_write_demod_bytes(state, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 157 | reset, sizeof(reset)); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 158 | if (ret == 0) { |
| 159 | |
| 160 | /* force reset high (inactive) */ |
| 161 | reset[1] = 0x01; |
| 162 | ret = i2c_write_demod_bytes(state, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 163 | reset, sizeof(reset)); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 164 | } |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | static int lgdt330x_SwReset(struct lgdt330x_state* state) |
| 169 | { |
| 170 | switch (state->config->demod_chip) { |
| 171 | case LGDT3302: |
| 172 | return lgdt3302_SwReset(state); |
| 173 | case LGDT3303: |
| 174 | return lgdt3303_SwReset(state); |
| 175 | default: |
| 176 | return -ENODEV; |
| 177 | } |
| 178 | } |
| 179 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 180 | static int lgdt330x_init(struct dvb_frontend* fe) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 181 | { |
| 182 | /* Hardware reset is done using gpio[0] of cx23880x chip. |
| 183 | * I'd like to do it here, but don't know how to find chip address. |
| 184 | * cx88-cards.c arranges for the reset bit to be inactive (high). |
| 185 | * Maybe there needs to be a callable function in cx88-core or |
| 186 | * the caller of this function needs to do it. */ |
| 187 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 188 | /* |
| 189 | * Array of byte pairs <address, value> |
| 190 | * to initialize each different chip |
| 191 | */ |
| 192 | static u8 lgdt3302_init_data[] = { |
| 193 | /* Use 50MHz parameter values from spec sheet since xtal is 50 */ |
| 194 | /* Change the value of NCOCTFV[25:0] of carrier |
| 195 | recovery center frequency register */ |
| 196 | VSB_CARRIER_FREQ0, 0x00, |
| 197 | VSB_CARRIER_FREQ1, 0x87, |
| 198 | VSB_CARRIER_FREQ2, 0x8e, |
| 199 | VSB_CARRIER_FREQ3, 0x01, |
| 200 | /* Change the TPCLK pin polarity |
| 201 | data is valid on falling clock */ |
| 202 | DEMUX_CONTROL, 0xfb, |
| 203 | /* Change the value of IFBW[11:0] of |
| 204 | AGC IF/RF loop filter bandwidth register */ |
| 205 | AGC_RF_BANDWIDTH0, 0x40, |
| 206 | AGC_RF_BANDWIDTH1, 0x93, |
| 207 | AGC_RF_BANDWIDTH2, 0x00, |
| 208 | /* Change the value of bit 6, 'nINAGCBY' and |
| 209 | 'NSSEL[1:0] of ACG function control register 2 */ |
| 210 | AGC_FUNC_CTRL2, 0xc6, |
| 211 | /* Change the value of bit 6 'RFFIX' |
| 212 | of AGC function control register 3 */ |
| 213 | AGC_FUNC_CTRL3, 0x40, |
| 214 | /* Set the value of 'INLVTHD' register 0x2a/0x2c |
| 215 | to 0x7fe */ |
| 216 | AGC_DELAY0, 0x07, |
| 217 | AGC_DELAY2, 0xfe, |
| 218 | /* Change the value of IAGCBW[15:8] |
Adrian Bunk | 9aaeded | 2006-06-30 18:19:55 +0200 | [diff] [blame] | 219 | of inner AGC loop filter bandwidth */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 220 | AGC_LOOP_BANDWIDTH0, 0x08, |
| 221 | AGC_LOOP_BANDWIDTH1, 0x9a |
| 222 | }; |
| 223 | |
| 224 | static u8 lgdt3303_init_data[] = { |
| 225 | 0x4c, 0x14 |
| 226 | }; |
| 227 | |
Michael Krufky | c0b11b9 | 2005-11-08 21:35:32 -0800 | [diff] [blame] | 228 | static u8 flip_lgdt3303_init_data[] = { |
| 229 | 0x4c, 0x14, |
| 230 | 0x87, 0xf3 |
| 231 | }; |
| 232 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 233 | struct lgdt330x_state* state = fe->demodulator_priv; |
| 234 | char *chip_name; |
| 235 | int err; |
| 236 | |
| 237 | switch (state->config->demod_chip) { |
| 238 | case LGDT3302: |
| 239 | chip_name = "LGDT3302"; |
| 240 | err = i2c_write_demod_bytes(state, lgdt3302_init_data, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 241 | sizeof(lgdt3302_init_data)); |
| 242 | break; |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 243 | case LGDT3303: |
| 244 | chip_name = "LGDT3303"; |
Michael Krufky | c0b11b9 | 2005-11-08 21:35:32 -0800 | [diff] [blame] | 245 | if (state->config->clock_polarity_flip) { |
| 246 | err = i2c_write_demod_bytes(state, flip_lgdt3303_init_data, |
| 247 | sizeof(flip_lgdt3303_init_data)); |
| 248 | } else { |
| 249 | err = i2c_write_demod_bytes(state, lgdt3303_init_data, |
| 250 | sizeof(lgdt3303_init_data)); |
| 251 | } |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 252 | break; |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 253 | default: |
| 254 | chip_name = "undefined"; |
| 255 | printk (KERN_WARNING "Only LGDT3302 and LGDT3303 are supported chips.\n"); |
| 256 | err = -ENODEV; |
| 257 | } |
| 258 | dprintk("%s entered as %s\n", __FUNCTION__, chip_name); |
| 259 | if (err < 0) |
| 260 | return err; |
| 261 | return lgdt330x_SwReset(state); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 262 | } |
| 263 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 264 | static int lgdt330x_read_ber(struct dvb_frontend* fe, u32* ber) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 265 | { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 266 | *ber = 0; /* Not supplied by the demod chips */ |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 267 | return 0; |
| 268 | } |
| 269 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 270 | static int lgdt330x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 271 | { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 272 | struct lgdt330x_state* state = fe->demodulator_priv; |
| 273 | int err; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 274 | u8 buf[2]; |
| 275 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 276 | switch (state->config->demod_chip) { |
| 277 | case LGDT3302: |
| 278 | err = i2c_read_demod_bytes(state, LGDT3302_PACKET_ERR_COUNTER1, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 279 | buf, sizeof(buf)); |
| 280 | break; |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 281 | case LGDT3303: |
| 282 | err = i2c_read_demod_bytes(state, LGDT3303_PACKET_ERR_COUNTER1, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 283 | buf, sizeof(buf)); |
| 284 | break; |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 285 | default: |
| 286 | printk(KERN_WARNING |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 287 | "Only LGDT3302 and LGDT3303 are supported chips.\n"); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 288 | err = -ENODEV; |
| 289 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 290 | |
| 291 | *ucblocks = (buf[0] << 8) | buf[1]; |
| 292 | return 0; |
| 293 | } |
| 294 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 295 | static int lgdt330x_set_parameters(struct dvb_frontend* fe, |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 296 | struct dvb_frontend_parameters *param) |
| 297 | { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 298 | /* |
| 299 | * Array of byte pairs <address, value> |
| 300 | * to initialize 8VSB for lgdt3303 chip 50 MHz IF |
| 301 | */ |
| 302 | static u8 lgdt3303_8vsb_44_data[] = { |
| 303 | 0x04, 0x00, |
| 304 | 0x0d, 0x40, |
Mauro Carvalho Chehab | 9101e62 | 2005-12-12 00:37:24 -0800 | [diff] [blame] | 305 | 0x0e, 0x87, |
| 306 | 0x0f, 0x8e, |
| 307 | 0x10, 0x01, |
| 308 | 0x47, 0x8b }; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 309 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 310 | /* |
| 311 | * Array of byte pairs <address, value> |
| 312 | * to initialize QAM for lgdt3303 chip |
| 313 | */ |
| 314 | static u8 lgdt3303_qam_data[] = { |
| 315 | 0x04, 0x00, |
| 316 | 0x0d, 0x00, |
| 317 | 0x0e, 0x00, |
| 318 | 0x0f, 0x00, |
| 319 | 0x10, 0x00, |
| 320 | 0x51, 0x63, |
| 321 | 0x47, 0x66, |
| 322 | 0x48, 0x66, |
| 323 | 0x4d, 0x1a, |
| 324 | 0x49, 0x08, |
| 325 | 0x4a, 0x9b }; |
| 326 | |
| 327 | struct lgdt330x_state* state = fe->demodulator_priv; |
| 328 | |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 329 | static u8 top_ctrl_cfg[] = { TOP_CONTROL, 0x03 }; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 330 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 331 | int err; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 332 | /* Change only if we are actually changing the modulation */ |
| 333 | if (state->current_modulation != param->u.vsb.modulation) { |
| 334 | switch(param->u.vsb.modulation) { |
| 335 | case VSB_8: |
| 336 | dprintk("%s: VSB_8 MODE\n", __FUNCTION__); |
| 337 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 338 | /* Select VSB mode */ |
| 339 | top_ctrl_cfg[1] = 0x03; |
Michael Krufky | 0ccef6d | 2005-07-27 11:45:55 -0700 | [diff] [blame] | 340 | |
| 341 | /* Select ANT connector if supported by card */ |
| 342 | if (state->config->pll_rf_set) |
| 343 | state->config->pll_rf_set(fe, 1); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 344 | |
| 345 | if (state->config->demod_chip == LGDT3303) { |
| 346 | err = i2c_write_demod_bytes(state, lgdt3303_8vsb_44_data, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 347 | sizeof(lgdt3303_8vsb_44_data)); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 348 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 349 | break; |
| 350 | |
| 351 | case QAM_64: |
| 352 | dprintk("%s: QAM_64 MODE\n", __FUNCTION__); |
| 353 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 354 | /* Select QAM_64 mode */ |
| 355 | top_ctrl_cfg[1] = 0x00; |
Michael Krufky | 0ccef6d | 2005-07-27 11:45:55 -0700 | [diff] [blame] | 356 | |
| 357 | /* Select CABLE connector if supported by card */ |
| 358 | if (state->config->pll_rf_set) |
| 359 | state->config->pll_rf_set(fe, 0); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 360 | |
| 361 | if (state->config->demod_chip == LGDT3303) { |
| 362 | err = i2c_write_demod_bytes(state, lgdt3303_qam_data, |
| 363 | sizeof(lgdt3303_qam_data)); |
| 364 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 365 | break; |
| 366 | |
| 367 | case QAM_256: |
| 368 | dprintk("%s: QAM_256 MODE\n", __FUNCTION__); |
| 369 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 370 | /* Select QAM_256 mode */ |
| 371 | top_ctrl_cfg[1] = 0x01; |
Michael Krufky | 0ccef6d | 2005-07-27 11:45:55 -0700 | [diff] [blame] | 372 | |
| 373 | /* Select CABLE connector if supported by card */ |
| 374 | if (state->config->pll_rf_set) |
| 375 | state->config->pll_rf_set(fe, 0); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 376 | |
| 377 | if (state->config->demod_chip == LGDT3303) { |
| 378 | err = i2c_write_demod_bytes(state, lgdt3303_qam_data, |
| 379 | sizeof(lgdt3303_qam_data)); |
| 380 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 381 | break; |
| 382 | default: |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 383 | printk(KERN_WARNING "lgdt330x: %s: Modulation type(%d) UNSUPPORTED\n", __FUNCTION__, param->u.vsb.modulation); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 384 | return -1; |
| 385 | } |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 386 | /* |
| 387 | * select serial or parallel MPEG harware interface |
| 388 | * Serial: 0x04 for LGDT3302 or 0x40 for LGDT3303 |
| 389 | * Parallel: 0x00 |
| 390 | */ |
| 391 | top_ctrl_cfg[1] |= state->config->serial_mpeg; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 392 | |
| 393 | /* Select the requested mode */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 394 | i2c_write_demod_bytes(state, top_ctrl_cfg, |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 395 | sizeof(top_ctrl_cfg)); |
| 396 | if (state->config->set_ts_params) |
| 397 | state->config->set_ts_params(fe, 0); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 398 | state->current_modulation = param->u.vsb.modulation; |
| 399 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 400 | |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 401 | /* Tune to the specified frequency */ |
Patrick Boettcher | dea7486 | 2006-05-14 05:01:31 -0300 | [diff] [blame] | 402 | if (fe->ops.tuner_ops.set_params) { |
| 403 | fe->ops.tuner_ops.set_params(fe, param); |
| 404 | if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); |
Andrew de Quincey | 02269f3 | 2006-04-18 17:47:11 -0300 | [diff] [blame] | 405 | } |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 406 | |
| 407 | /* Keep track of the new frequency */ |
Mauro Carvalho Chehab | 4302c15 | 2006-01-09 15:25:22 -0200 | [diff] [blame] | 408 | /* FIXME this is the wrong way to do this... */ |
| 409 | /* The tuner is shared with the video4linux analog API */ |
Michael Krufky | dc9ca2a | 2005-09-06 15:19:40 -0700 | [diff] [blame] | 410 | state->current_frequency = param->frequency; |
| 411 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 412 | lgdt330x_SwReset(state); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 413 | return 0; |
| 414 | } |
| 415 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 416 | static int lgdt330x_get_frontend(struct dvb_frontend* fe, |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 417 | struct dvb_frontend_parameters* param) |
| 418 | { |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 419 | struct lgdt330x_state *state = fe->demodulator_priv; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 420 | param->frequency = state->current_frequency; |
| 421 | return 0; |
| 422 | } |
| 423 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 424 | static int lgdt3302_read_status(struct dvb_frontend* fe, fe_status_t* status) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 425 | { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 426 | struct lgdt330x_state* state = fe->demodulator_priv; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 427 | u8 buf[3]; |
| 428 | |
| 429 | *status = 0; /* Reset status result */ |
| 430 | |
Michael Krufky | 08d8052 | 2005-07-07 17:58:43 -0700 | [diff] [blame] | 431 | /* AGC status register */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 432 | i2c_read_demod_bytes(state, AGC_STATUS, buf, 1); |
Michael Krufky | 08d8052 | 2005-07-07 17:58:43 -0700 | [diff] [blame] | 433 | dprintk("%s: AGC_STATUS = 0x%02x\n", __FUNCTION__, buf[0]); |
| 434 | if ((buf[0] & 0x0c) == 0x8){ |
| 435 | /* Test signal does not exist flag */ |
| 436 | /* as well as the AGC lock flag. */ |
| 437 | *status |= FE_HAS_SIGNAL; |
| 438 | } else { |
| 439 | /* Without a signal all other status bits are meaningless */ |
| 440 | return 0; |
| 441 | } |
| 442 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 443 | /* |
| 444 | * You must set the Mask bits to 1 in the IRQ_MASK in order |
| 445 | * to see that status bit in the IRQ_STATUS register. |
| 446 | * This is done in SwReset(); |
| 447 | */ |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 448 | /* signal status */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 449 | i2c_read_demod_bytes(state, TOP_CONTROL, buf, sizeof(buf)); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 450 | dprintk("%s: TOP_CONTROL = 0x%02x, IRO_MASK = 0x%02x, IRQ_STATUS = 0x%02x\n", __FUNCTION__, buf[0], buf[1], buf[2]); |
Michael Krufky | 08d8052 | 2005-07-07 17:58:43 -0700 | [diff] [blame] | 451 | |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 452 | |
| 453 | /* sync status */ |
| 454 | if ((buf[2] & 0x03) == 0x01) { |
| 455 | *status |= FE_HAS_SYNC; |
| 456 | } |
| 457 | |
| 458 | /* FEC error status */ |
| 459 | if ((buf[2] & 0x0c) == 0x08) { |
| 460 | *status |= FE_HAS_LOCK; |
| 461 | *status |= FE_HAS_VITERBI; |
| 462 | } |
| 463 | |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 464 | /* Carrier Recovery Lock Status Register */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 465 | i2c_read_demod_bytes(state, CARRIER_LOCK, buf, 1); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 466 | dprintk("%s: CARRIER_LOCK = 0x%02x\n", __FUNCTION__, buf[0]); |
| 467 | switch (state->current_modulation) { |
| 468 | case QAM_256: |
| 469 | case QAM_64: |
| 470 | /* Need to undestand why there are 3 lock levels here */ |
| 471 | if ((buf[0] & 0x07) == 0x07) |
| 472 | *status |= FE_HAS_CARRIER; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 473 | break; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 474 | case VSB_8: |
| 475 | if ((buf[0] & 0x80) == 0x80) |
| 476 | *status |= FE_HAS_CARRIER; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 477 | break; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 478 | default: |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 479 | printk("KERN_WARNING lgdt330x: %s: Modulation set to unsupported value\n", __FUNCTION__); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 480 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 481 | |
| 482 | return 0; |
| 483 | } |
| 484 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 485 | static int lgdt3303_read_status(struct dvb_frontend* fe, fe_status_t* status) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 486 | { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 487 | struct lgdt330x_state* state = fe->demodulator_priv; |
| 488 | int err; |
| 489 | u8 buf[3]; |
| 490 | |
| 491 | *status = 0; /* Reset status result */ |
| 492 | |
| 493 | /* lgdt3303 AGC status register */ |
| 494 | err = i2c_read_demod_bytes(state, 0x58, buf, 1); |
| 495 | if (err < 0) |
| 496 | return err; |
| 497 | |
| 498 | dprintk("%s: AGC_STATUS = 0x%02x\n", __FUNCTION__, buf[0]); |
| 499 | if ((buf[0] & 0x21) == 0x01){ |
| 500 | /* Test input signal does not exist flag */ |
| 501 | /* as well as the AGC lock flag. */ |
| 502 | *status |= FE_HAS_SIGNAL; |
| 503 | } else { |
| 504 | /* Without a signal all other status bits are meaningless */ |
| 505 | return 0; |
| 506 | } |
| 507 | |
| 508 | /* Carrier Recovery Lock Status Register */ |
| 509 | i2c_read_demod_bytes(state, CARRIER_LOCK, buf, 1); |
| 510 | dprintk("%s: CARRIER_LOCK = 0x%02x\n", __FUNCTION__, buf[0]); |
| 511 | switch (state->current_modulation) { |
| 512 | case QAM_256: |
| 513 | case QAM_64: |
| 514 | /* Need to undestand why there are 3 lock levels here */ |
| 515 | if ((buf[0] & 0x07) == 0x07) |
| 516 | *status |= FE_HAS_CARRIER; |
| 517 | else |
| 518 | break; |
| 519 | i2c_read_demod_bytes(state, 0x8a, buf, 1); |
| 520 | if ((buf[0] & 0x04) == 0x04) |
| 521 | *status |= FE_HAS_SYNC; |
| 522 | if ((buf[0] & 0x01) == 0x01) |
| 523 | *status |= FE_HAS_LOCK; |
| 524 | if ((buf[0] & 0x08) == 0x08) |
| 525 | *status |= FE_HAS_VITERBI; |
| 526 | break; |
| 527 | case VSB_8: |
| 528 | if ((buf[0] & 0x80) == 0x80) |
| 529 | *status |= FE_HAS_CARRIER; |
| 530 | else |
| 531 | break; |
| 532 | i2c_read_demod_bytes(state, 0x38, buf, 1); |
| 533 | if ((buf[0] & 0x02) == 0x00) |
| 534 | *status |= FE_HAS_SYNC; |
| 535 | if ((buf[0] & 0x01) == 0x01) { |
| 536 | *status |= FE_HAS_LOCK; |
| 537 | *status |= FE_HAS_VITERBI; |
| 538 | } |
| 539 | break; |
| 540 | default: |
| 541 | printk("KERN_WARNING lgdt330x: %s: Modulation set to unsupported value\n", __FUNCTION__); |
| 542 | } |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 543 | return 0; |
| 544 | } |
| 545 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 546 | static int lgdt330x_read_signal_strength(struct dvb_frontend* fe, u16* strength) |
| 547 | { |
| 548 | /* not directly available. */ |
| 549 | *strength = 0; |
| 550 | return 0; |
| 551 | } |
| 552 | |
| 553 | static int lgdt3302_read_snr(struct dvb_frontend* fe, u16* snr) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 554 | { |
| 555 | #ifdef SNR_IN_DB |
| 556 | /* |
| 557 | * Spec sheet shows formula for SNR_EQ = 10 log10(25 * 24**2 / noise) |
| 558 | * and SNR_PH = 10 log10(25 * 32**2 / noise) for equalizer and phase tracker |
| 559 | * respectively. The following tables are built on these formulas. |
| 560 | * The usual definition is SNR = 20 log10(signal/noise) |
| 561 | * If the specification is wrong the value retuned is 1/2 the actual SNR in db. |
| 562 | * |
| 563 | * This table is a an ordered list of noise values computed by the |
| 564 | * formula from the spec sheet such that the index into the table |
| 565 | * starting at 43 or 45 is the SNR value in db. There are duplicate noise |
| 566 | * value entries at the beginning because the SNR varies more than |
| 567 | * 1 db for a change of 1 digit in noise at very small values of noise. |
| 568 | * |
| 569 | * Examples from SNR_EQ table: |
| 570 | * noise SNR |
| 571 | * 0 43 |
| 572 | * 1 42 |
| 573 | * 2 39 |
| 574 | * 3 37 |
| 575 | * 4 36 |
| 576 | * 5 35 |
| 577 | * 6 34 |
| 578 | * 7 33 |
| 579 | * 8 33 |
| 580 | * 9 32 |
| 581 | * 10 32 |
| 582 | * 11 31 |
| 583 | * 12 31 |
| 584 | * 13 30 |
| 585 | */ |
| 586 | |
| 587 | static const u32 SNR_EQ[] = |
| 588 | { 1, 2, 2, 2, 3, 3, 4, 4, 5, 7, |
| 589 | 9, 11, 13, 17, 21, 26, 33, 41, 52, 65, |
| 590 | 81, 102, 129, 162, 204, 257, 323, 406, 511, 644, |
| 591 | 810, 1020, 1284, 1616, 2035, 2561, 3224, 4059, 5110, 6433, |
| 592 | 8098, 10195, 12835, 16158, 20341, 25608, 32238, 40585, 51094, 64323, |
| 593 | 80978, 101945, 128341, 161571, 203406, 256073, 0x40000 |
| 594 | }; |
| 595 | |
| 596 | static const u32 SNR_PH[] = |
| 597 | { 1, 2, 2, 2, 3, 3, 4, 5, 6, 8, |
| 598 | 10, 12, 15, 19, 23, 29, 37, 46, 58, 73, |
| 599 | 91, 115, 144, 182, 229, 288, 362, 456, 574, 722, |
| 600 | 909, 1144, 1440, 1813, 2282, 2873, 3617, 4553, 5732, 7216, |
| 601 | 9084, 11436, 14396, 18124, 22817, 28724, 36161, 45524, 57312, 72151, |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 602 | 90833, 114351, 143960, 181235, 228161, 0x080000 |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 603 | }; |
| 604 | |
| 605 | static u8 buf[5];/* read data buffer */ |
| 606 | static u32 noise; /* noise value */ |
| 607 | static u32 snr_db; /* index into SNR_EQ[] */ |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 608 | struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 609 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 610 | /* read both equalizer and phase tracker noise data */ |
| 611 | i2c_read_demod_bytes(state, EQPH_ERR0, buf, sizeof(buf)); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 612 | |
| 613 | if (state->current_modulation == VSB_8) { |
| 614 | /* Equalizer Mean-Square Error Register for VSB */ |
| 615 | noise = ((buf[0] & 7) << 16) | (buf[1] << 8) | buf[2]; |
| 616 | |
| 617 | /* |
| 618 | * Look up noise value in table. |
| 619 | * A better search algorithm could be used... |
| 620 | * watch out there are duplicate entries. |
| 621 | */ |
| 622 | for (snr_db = 0; snr_db < sizeof(SNR_EQ); snr_db++) { |
| 623 | if (noise < SNR_EQ[snr_db]) { |
| 624 | *snr = 43 - snr_db; |
| 625 | break; |
| 626 | } |
| 627 | } |
| 628 | } else { |
| 629 | /* Phase Tracker Mean-Square Error Register for QAM */ |
| 630 | noise = ((buf[0] & 7<<3) << 13) | (buf[3] << 8) | buf[4]; |
| 631 | |
| 632 | /* Look up noise value in table. */ |
| 633 | for (snr_db = 0; snr_db < sizeof(SNR_PH); snr_db++) { |
| 634 | if (noise < SNR_PH[snr_db]) { |
| 635 | *snr = 45 - snr_db; |
| 636 | break; |
| 637 | } |
| 638 | } |
| 639 | } |
| 640 | #else |
| 641 | /* Return the raw noise value */ |
| 642 | static u8 buf[5];/* read data buffer */ |
| 643 | static u32 noise; /* noise value */ |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 644 | struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 645 | |
| 646 | /* read both equalizer and pase tracker noise data */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 647 | i2c_read_demod_bytes(state, EQPH_ERR0, buf, sizeof(buf)); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 648 | |
| 649 | if (state->current_modulation == VSB_8) { |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 650 | /* Phase Tracker Mean-Square Error Register for VSB */ |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 651 | noise = ((buf[0] & 7<<3) << 13) | (buf[3] << 8) | buf[4]; |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 652 | } else { |
| 653 | |
| 654 | /* Carrier Recovery Mean-Square Error for QAM */ |
| 655 | i2c_read_demod_bytes(state, 0x1a, buf, 2); |
| 656 | noise = ((buf[0] & 3) << 8) | buf[1]; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 657 | } |
| 658 | |
| 659 | /* Small values for noise mean signal is better so invert noise */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 660 | *snr = ~noise; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 661 | #endif |
| 662 | |
| 663 | dprintk("%s: noise = 0x%05x, snr = %idb\n",__FUNCTION__, noise, *snr); |
| 664 | |
| 665 | return 0; |
| 666 | } |
| 667 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 668 | static int lgdt3303_read_snr(struct dvb_frontend* fe, u16* snr) |
| 669 | { |
| 670 | /* Return the raw noise value */ |
| 671 | static u8 buf[5];/* read data buffer */ |
| 672 | static u32 noise; /* noise value */ |
| 673 | struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; |
| 674 | |
| 675 | if (state->current_modulation == VSB_8) { |
| 676 | |
Mac Michaels | 87057d2 | 2006-06-20 09:18:13 -0300 | [diff] [blame] | 677 | i2c_read_demod_bytes(state, 0x6e, buf, 5); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 678 | /* Phase Tracker Mean-Square Error Register for VSB */ |
| 679 | noise = ((buf[0] & 7) << 16) | (buf[3] << 8) | buf[4]; |
| 680 | } else { |
| 681 | |
| 682 | /* Carrier Recovery Mean-Square Error for QAM */ |
| 683 | i2c_read_demod_bytes(state, 0x1a, buf, 2); |
| 684 | noise = (buf[0] << 8) | buf[1]; |
| 685 | } |
| 686 | |
| 687 | /* Small values for noise mean signal is better so invert noise */ |
| 688 | *snr = ~noise; |
| 689 | |
| 690 | dprintk("%s: noise = 0x%05x, snr = %idb\n",__FUNCTION__, noise, *snr); |
| 691 | |
| 692 | return 0; |
| 693 | } |
| 694 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 695 | static int lgdt330x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 696 | { |
| 697 | /* I have no idea about this - it may not be needed */ |
| 698 | fe_tune_settings->min_delay_ms = 500; |
| 699 | fe_tune_settings->step_size = 0; |
| 700 | fe_tune_settings->max_drift = 0; |
| 701 | return 0; |
| 702 | } |
| 703 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 704 | static void lgdt330x_release(struct dvb_frontend* fe) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 705 | { |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 706 | struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 707 | kfree(state); |
| 708 | } |
| 709 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 710 | static struct dvb_frontend_ops lgdt3302_ops; |
| 711 | static struct dvb_frontend_ops lgdt3303_ops; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 712 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 713 | struct dvb_frontend* lgdt330x_attach(const struct lgdt330x_config* config, |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 714 | struct i2c_adapter* i2c) |
| 715 | { |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 716 | struct lgdt330x_state* state = NULL; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 717 | u8 buf[1]; |
| 718 | |
| 719 | /* Allocate memory for the internal state */ |
Panagiotis Issaris | 7408187 | 2006-01-11 19:40:56 -0200 | [diff] [blame] | 720 | state = kzalloc(sizeof(struct lgdt330x_state), GFP_KERNEL); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 721 | if (state == NULL) |
| 722 | goto error; |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 723 | |
| 724 | /* Setup the state */ |
| 725 | state->config = config; |
| 726 | state->i2c = i2c; |
Patrick Boettcher | dea7486 | 2006-05-14 05:01:31 -0300 | [diff] [blame] | 727 | |
| 728 | /* Create dvb_frontend */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 729 | switch (config->demod_chip) { |
| 730 | case LGDT3302: |
Patrick Boettcher | dea7486 | 2006-05-14 05:01:31 -0300 | [diff] [blame] | 731 | memcpy(&state->frontend.ops, &lgdt3302_ops, sizeof(struct dvb_frontend_ops)); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 732 | break; |
| 733 | case LGDT3303: |
Patrick Boettcher | dea7486 | 2006-05-14 05:01:31 -0300 | [diff] [blame] | 734 | memcpy(&state->frontend.ops, &lgdt3303_ops, sizeof(struct dvb_frontend_ops)); |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 735 | break; |
| 736 | default: |
| 737 | goto error; |
| 738 | } |
Patrick Boettcher | dea7486 | 2006-05-14 05:01:31 -0300 | [diff] [blame] | 739 | state->frontend.demodulator_priv = state; |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 740 | |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 741 | /* Verify communication with demod chip */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 742 | if (i2c_read_demod_bytes(state, 2, buf, 1)) |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 743 | goto error; |
| 744 | |
| 745 | state->current_frequency = -1; |
| 746 | state->current_modulation = -1; |
| 747 | |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 748 | return &state->frontend; |
| 749 | |
| 750 | error: |
Jesper Juhl | 2ea7533 | 2005-11-07 01:01:31 -0800 | [diff] [blame] | 751 | kfree(state); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 752 | dprintk("%s: ERROR\n",__FUNCTION__); |
| 753 | return NULL; |
| 754 | } |
| 755 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 756 | static struct dvb_frontend_ops lgdt3302_ops = { |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 757 | .info = { |
Michael Krufky | e179d8b | 2005-08-09 17:48:54 -0700 | [diff] [blame] | 758 | .name= "LG Electronics LGDT3302 VSB/QAM Frontend", |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 759 | .type = FE_ATSC, |
| 760 | .frequency_min= 54000000, |
| 761 | .frequency_max= 858000000, |
| 762 | .frequency_stepsize= 62500, |
Michael Krufky | 66944e9 | 2005-11-08 21:35:55 -0800 | [diff] [blame] | 763 | .symbol_rate_min = 5056941, /* QAM 64 */ |
| 764 | .symbol_rate_max = 10762000, /* VSB 8 */ |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 765 | .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB |
| 766 | }, |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 767 | .init = lgdt330x_init, |
| 768 | .set_frontend = lgdt330x_set_parameters, |
| 769 | .get_frontend = lgdt330x_get_frontend, |
| 770 | .get_tune_settings = lgdt330x_get_tune_settings, |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 771 | .read_status = lgdt3302_read_status, |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 772 | .read_ber = lgdt330x_read_ber, |
| 773 | .read_signal_strength = lgdt330x_read_signal_strength, |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 774 | .read_snr = lgdt3302_read_snr, |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 775 | .read_ucblocks = lgdt330x_read_ucblocks, |
| 776 | .release = lgdt330x_release, |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 777 | }; |
| 778 | |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 779 | static struct dvb_frontend_ops lgdt3303_ops = { |
| 780 | .info = { |
| 781 | .name= "LG Electronics LGDT3303 VSB/QAM Frontend", |
| 782 | .type = FE_ATSC, |
| 783 | .frequency_min= 54000000, |
| 784 | .frequency_max= 858000000, |
| 785 | .frequency_stepsize= 62500, |
Michael Krufky | 66944e9 | 2005-11-08 21:35:55 -0800 | [diff] [blame] | 786 | .symbol_rate_min = 5056941, /* QAM 64 */ |
| 787 | .symbol_rate_max = 10762000, /* VSB 8 */ |
Michael Krufky | 1963c90 | 2005-08-08 09:22:43 -0700 | [diff] [blame] | 788 | .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB |
| 789 | }, |
| 790 | .init = lgdt330x_init, |
| 791 | .set_frontend = lgdt330x_set_parameters, |
| 792 | .get_frontend = lgdt330x_get_frontend, |
| 793 | .get_tune_settings = lgdt330x_get_tune_settings, |
| 794 | .read_status = lgdt3303_read_status, |
| 795 | .read_ber = lgdt330x_read_ber, |
| 796 | .read_signal_strength = lgdt330x_read_signal_strength, |
| 797 | .read_snr = lgdt3303_read_snr, |
| 798 | .read_ucblocks = lgdt330x_read_ucblocks, |
| 799 | .release = lgdt330x_release, |
| 800 | }; |
| 801 | |
| 802 | MODULE_DESCRIPTION("LGDT330X (ATSC 8VSB & ITU-T J.83 AnnexB 64/256 QAM) Demodulator Driver"); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 803 | MODULE_AUTHOR("Wilson Michaels"); |
| 804 | MODULE_LICENSE("GPL"); |
| 805 | |
Michael Krufky | 6ddcc91 | 2005-07-27 11:46:00 -0700 | [diff] [blame] | 806 | EXPORT_SYMBOL(lgdt330x_attach); |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 807 | |
| 808 | /* |
| 809 | * Local variables: |
| 810 | * c-basic-offset: 8 |
Mac Michaels | d8667cb | 2005-07-07 17:58:29 -0700 | [diff] [blame] | 811 | * End: |
| 812 | */ |