drivers/media/usb/as102/as10x_cmd.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Abilis Systems Single DVB-T Receiver
   4  * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
   5  * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include "as102_drv.h"
  10 #include "as10x_cmd.h"
  11
  12 /**
  13  * as10x_cmd_turn_on - send turn on command to AS10x
  14  * @adap:   pointer to AS10x bus adapter
  15  *
  16  * Return 0 when no error, < 0 in case of error.
  17  */
  18 int as10x_cmd_turn_on(struct as10x_bus_adapter_t *adap)
  19 {
  20         int error = AS10X_CMD_ERROR;
  21         struct as10x_cmd_t *pcmd, *prsp;
  22
  23         pcmd = adap->cmd;
  24         prsp = adap->rsp;
  25
  26         /* prepare command */
  27         as10x_cmd_build(pcmd, (++adap->cmd_xid),
  28                         sizeof(pcmd->body.turn_on.req));
  29
  30         /* fill command */
  31         pcmd->body.turn_on.req.proc_id = cpu_to_le16(CONTROL_PROC_TURNON);
  32
  33         /* send command */
  34         if (adap->ops->xfer_cmd) {
  35                 error = adap->ops->xfer_cmd(adap, (uint8_t *) pcmd,
  36                                             sizeof(pcmd->body.turn_on.req) +
  37                                             HEADER_SIZE,
  38                                             (uint8_t *) prsp,
  39                                             sizeof(prsp->body.turn_on.rsp) +
  40                                             HEADER_SIZE);
  41         }
  42
  43         if (error < 0)
  44                 goto out;
  45
  46         /* parse response */
  47         error = as10x_rsp_parse(prsp, CONTROL_PROC_TURNON_RSP);
  48
  49 out:
  50         return error;
  51 }
  52
  53 /**
  54  * as10x_cmd_turn_off - send turn off command to AS10x
  55  * @adap:   pointer to AS10x bus adapter
  56  *
  57  * Return 0 on success or negative value in case of error.
  58  */
  59 int as10x_cmd_turn_off(struct as10x_bus_adapter_t *adap)
  60 {
  61         int error = AS10X_CMD_ERROR;
  62         struct as10x_cmd_t *pcmd, *prsp;
  63
  64         pcmd = adap->cmd;
  65         prsp = adap->rsp;
  66
  67         /* prepare command */
  68         as10x_cmd_build(pcmd, (++adap->cmd_xid),
  69                         sizeof(pcmd->body.turn_off.req));
  70
  71         /* fill command */
  72         pcmd->body.turn_off.req.proc_id = cpu_to_le16(CONTROL_PROC_TURNOFF);
  73
  74         /* send command */
  75         if (adap->ops->xfer_cmd) {
  76                 error = adap->ops->xfer_cmd(
  77                         adap, (uint8_t *) pcmd,
  78                         sizeof(pcmd->body.turn_off.req) + HEADER_SIZE,
  79                         (uint8_t *) prsp,
  80                         sizeof(prsp->body.turn_off.rsp) + HEADER_SIZE);
  81         }
  82
  83         if (error < 0)
  84                 goto out;
  85
  86         /* parse response */
  87         error = as10x_rsp_parse(prsp, CONTROL_PROC_TURNOFF_RSP);
  88
  89 out:
  90         return error;
  91 }
  92
  93 /**
  94  * as10x_cmd_set_tune - send set tune command to AS10x
  95  * @adap:    pointer to AS10x bus adapter
  96  * @ptune:   tune parameters
  97  *
  98  * Return 0 on success or negative value in case of error.
  99  */
 100 int as10x_cmd_set_tune(struct as10x_bus_adapter_t *adap,
 101                        struct as10x_tune_args *ptune)
 102 {
 103         int error = AS10X_CMD_ERROR;
 104         struct as10x_cmd_t *preq, *prsp;
 105
 106         preq = adap->cmd;
 107         prsp = adap->rsp;
 108
 109         /* prepare command */
 110         as10x_cmd_build(preq, (++adap->cmd_xid),
 111                         sizeof(preq->body.set_tune.req));
 112
 113         /* fill command */
 114         preq->body.set_tune.req.proc_id = cpu_to_le16(CONTROL_PROC_SETTUNE);
 115         preq->body.set_tune.req.args.freq = (__force __u32)cpu_to_le32(ptune->freq);
 116         preq->body.set_tune.req.args.bandwidth = ptune->bandwidth;
 117         preq->body.set_tune.req.args.hier_select = ptune->hier_select;
 118         preq->body.set_tune.req.args.modulation = ptune->modulation;
 119         preq->body.set_tune.req.args.hierarchy = ptune->hierarchy;
 120         preq->body.set_tune.req.args.interleaving_mode  =
 121                 ptune->interleaving_mode;
 122         preq->body.set_tune.req.args.code_rate  = ptune->code_rate;
 123         preq->body.set_tune.req.args.guard_interval = ptune->guard_interval;
 124         preq->body.set_tune.req.args.transmission_mode  =
 125                 ptune->transmission_mode;
 126
 127         /* send command */
 128         if (adap->ops->xfer_cmd) {
 129                 error = adap->ops->xfer_cmd(adap,
 130                                             (uint8_t *) preq,
 131                                             sizeof(preq->body.set_tune.req)
 132                                             + HEADER_SIZE,
 133                                             (uint8_t *) prsp,
 134                                             sizeof(prsp->body.set_tune.rsp)
 135                                             + HEADER_SIZE);
 136         }
 137
 138         if (error < 0)
 139                 goto out;
 140
 141         /* parse response */
 142         error = as10x_rsp_parse(prsp, CONTROL_PROC_SETTUNE_RSP);
 143
 144 out:
 145         return error;
 146 }
 147
 148 /**
 149  * as10x_cmd_get_tune_status - send get tune status command to AS10x
 150  * @adap: pointer to AS10x bus adapter
 151  * @pstatus: pointer to updated status structure of the current tune
 152  *
 153  * Return 0 on success or negative value in case of error.
 154  */
 155 int as10x_cmd_get_tune_status(struct as10x_bus_adapter_t *adap,
 156                               struct as10x_tune_status *pstatus)
 157 {
 158         int error = AS10X_CMD_ERROR;
 159         struct as10x_cmd_t  *preq, *prsp;
 160
 161         preq = adap->cmd;
 162         prsp = adap->rsp;
 163
 164         /* prepare command */
 165         as10x_cmd_build(preq, (++adap->cmd_xid),
 166                         sizeof(preq->body.get_tune_status.req));
 167
 168         /* fill command */
 169         preq->body.get_tune_status.req.proc_id =
 170                 cpu_to_le16(CONTROL_PROC_GETTUNESTAT);
 171
 172         /* send command */
 173         if (adap->ops->xfer_cmd) {
 174                 error = adap->ops->xfer_cmd(
 175                         adap,
 176                         (uint8_t *) preq,
 177                         sizeof(preq->body.get_tune_status.req) + HEADER_SIZE,
 178                         (uint8_t *) prsp,
 179                         sizeof(prsp->body.get_tune_status.rsp) + HEADER_SIZE);
 180         }
 181
 182         if (error < 0)
 183                 goto out;
 184
 185         /* parse response */
 186         error = as10x_rsp_parse(prsp, CONTROL_PROC_GETTUNESTAT_RSP);
 187         if (error < 0)
 188                 goto out;
 189
 190         /* Response OK -> get response data */
 191         pstatus->tune_state = prsp->body.get_tune_status.rsp.sts.tune_state;
 192         pstatus->signal_strength  =
 193                 le16_to_cpu((__force __le16)prsp->body.get_tune_status.rsp.sts.signal_strength);
 194         pstatus->PER = le16_to_cpu((__force __le16)prsp->body.get_tune_status.rsp.sts.PER);
 195         pstatus->BER = le16_to_cpu((__force __le16)prsp->body.get_tune_status.rsp.sts.BER);
 196
 197 out:
 198         return error;
 199 }
 200
 201 /**
 202  * as10x_cmd_get_tps - send get TPS command to AS10x
 203  * @adap:      pointer to AS10x handle
 204  * @ptps:      pointer to TPS parameters structure
 205  *
 206  * Return 0 on success or negative value in case of error.
 207  */
 208 int as10x_cmd_get_tps(struct as10x_bus_adapter_t *adap, struct as10x_tps *ptps)
 209 {
 210         int error = AS10X_CMD_ERROR;
 211         struct as10x_cmd_t *pcmd, *prsp;
 212
 213         pcmd = adap->cmd;
 214         prsp = adap->rsp;
 215
 216         /* prepare command */
 217         as10x_cmd_build(pcmd, (++adap->cmd_xid),
 218                         sizeof(pcmd->body.get_tps.req));
 219
 220         /* fill command */
 221         pcmd->body.get_tune_status.req.proc_id =
 222                 cpu_to_le16(CONTROL_PROC_GETTPS);
 223
 224         /* send command */
 225         if (adap->ops->xfer_cmd) {
 226                 error = adap->ops->xfer_cmd(adap,
 227                                             (uint8_t *) pcmd,
 228                                             sizeof(pcmd->body.get_tps.req) +
 229                                             HEADER_SIZE,
 230                                             (uint8_t *) prsp,
 231                                             sizeof(prsp->body.get_tps.rsp) +
 232                                             HEADER_SIZE);
 233         }
 234
 235         if (error < 0)
 236                 goto out;
 237
 238         /* parse response */
 239         error = as10x_rsp_parse(prsp, CONTROL_PROC_GETTPS_RSP);
 240         if (error < 0)
 241                 goto out;
 242
 243         /* Response OK -> get response data */
 244         ptps->modulation = prsp->body.get_tps.rsp.tps.modulation;
 245         ptps->hierarchy = prsp->body.get_tps.rsp.tps.hierarchy;
 246         ptps->interleaving_mode = prsp->body.get_tps.rsp.tps.interleaving_mode;
 247         ptps->code_rate_HP = prsp->body.get_tps.rsp.tps.code_rate_HP;
 248         ptps->code_rate_LP = prsp->body.get_tps.rsp.tps.code_rate_LP;
 249         ptps->guard_interval = prsp->body.get_tps.rsp.tps.guard_interval;
 250         ptps->transmission_mode  = prsp->body.get_tps.rsp.tps.transmission_mode;
 251         ptps->DVBH_mask_HP = prsp->body.get_tps.rsp.tps.DVBH_mask_HP;
 252         ptps->DVBH_mask_LP = prsp->body.get_tps.rsp.tps.DVBH_mask_LP;
 253         ptps->cell_ID = le16_to_cpu((__force __le16)prsp->body.get_tps.rsp.tps.cell_ID);
 254
 255 out:
 256         return error;
 257 }
 258
 259 /**
 260  * as10x_cmd_get_demod_stats - send get demod stats command to AS10x
 261  * @adap:          pointer to AS10x bus adapter
 262  * @pdemod_stats:  pointer to demod stats parameters structure
 263  *
 264  * Return 0 on success or negative value in case of error.
 265  */
 266 int as10x_cmd_get_demod_stats(struct as10x_bus_adapter_t *adap,
 267                               struct as10x_demod_stats *pdemod_stats)
 268 {
 269         int error = AS10X_CMD_ERROR;
 270         struct as10x_cmd_t *pcmd, *prsp;
 271
 272         pcmd = adap->cmd;
 273         prsp = adap->rsp;
 274
 275         /* prepare command */
 276         as10x_cmd_build(pcmd, (++adap->cmd_xid),
 277                         sizeof(pcmd->body.get_demod_stats.req));
 278
 279         /* fill command */
 280         pcmd->body.get_demod_stats.req.proc_id =
 281                 cpu_to_le16(CONTROL_PROC_GET_DEMOD_STATS);
 282
 283         /* send command */
 284         if (adap->ops->xfer_cmd) {
 285                 error = adap->ops->xfer_cmd(adap,
 286                                 (uint8_t *) pcmd,
 287                                 sizeof(pcmd->body.get_demod_stats.req)
 288                                 + HEADER_SIZE,
 289                                 (uint8_t *) prsp,
 290                                 sizeof(prsp->body.get_demod_stats.rsp)
 291                                 + HEADER_SIZE);
 292         }
 293
 294         if (error < 0)
 295                 goto out;
 296
 297         /* parse response */
 298         error = as10x_rsp_parse(prsp, CONTROL_PROC_GET_DEMOD_STATS_RSP);
 299         if (error < 0)
 300                 goto out;
 301
 302         /* Response OK -> get response data */
 303         pdemod_stats->frame_count =
 304                 le32_to_cpu((__force __le32)prsp->body.get_demod_stats.rsp.stats.frame_count);
 305         pdemod_stats->bad_frame_count =
 306                 le32_to_cpu((__force __le32)prsp->body.get_demod_stats.rsp.stats.bad_frame_count);
 307         pdemod_stats->bytes_fixed_by_rs =
 308                 le32_to_cpu((__force __le32)prsp->body.get_demod_stats.rsp.stats.bytes_fixed_by_rs);
 309         pdemod_stats->mer =
 310                 le16_to_cpu((__force __le16)prsp->body.get_demod_stats.rsp.stats.mer);
 311         pdemod_stats->has_started =
 312                 prsp->body.get_demod_stats.rsp.stats.has_started;
 313
 314 out:
 315         return error;
 316 }
 317
 318 /**
 319  * as10x_cmd_get_impulse_resp - send get impulse response command to AS10x
 320  * @adap:     pointer to AS10x bus adapter
 321  * @is_ready: pointer to value indicating when impulse
 322  *            response data is ready
 323  *
 324  * Return 0 on success or negative value in case of error.
 325  */
 326 int as10x_cmd_get_impulse_resp(struct as10x_bus_adapter_t *adap,
 327                                uint8_t *is_ready)
 328 {
 329         int error = AS10X_CMD_ERROR;
 330         struct as10x_cmd_t *pcmd, *prsp;
 331
 332         pcmd = adap->cmd;
 333         prsp = adap->rsp;
 334
 335         /* prepare command */
 336         as10x_cmd_build(pcmd, (++adap->cmd_xid),
 337                         sizeof(pcmd->body.get_impulse_rsp.req));
 338
 339         /* fill command */
 340         pcmd->body.get_impulse_rsp.req.proc_id =
 341                 cpu_to_le16(CONTROL_PROC_GET_IMPULSE_RESP);
 342
 343         /* send command */
 344         if (adap->ops->xfer_cmd) {
 345                 error = adap->ops->xfer_cmd(adap,
 346                                         (uint8_t *) pcmd,
 347                                         sizeof(pcmd->body.get_impulse_rsp.req)
 348                                         + HEADER_SIZE,
 349                                         (uint8_t *) prsp,
 350                                         sizeof(prsp->body.get_impulse_rsp.rsp)
 351                                         + HEADER_SIZE);
 352         }
 353
 354         if (error < 0)
 355                 goto out;
 356
 357         /* parse response */
 358         error = as10x_rsp_parse(prsp, CONTROL_PROC_GET_IMPULSE_RESP_RSP);
 359         if (error < 0)
 360                 goto out;
 361
 362         /* Response OK -> get response data */
 363         *is_ready = prsp->body.get_impulse_rsp.rsp.is_ready;
 364
 365 out:
 366         return error;
 367 }
 368
 369 /**
 370  * as10x_cmd_build - build AS10x command header
 371  * @pcmd:     pointer to AS10x command buffer
 372  * @xid:      sequence id of the command
 373  * @cmd_len:  length of the command
 374  */
 375 void as10x_cmd_build(struct as10x_cmd_t *pcmd,
 376                      uint16_t xid, uint16_t cmd_len)
 377 {
 378         pcmd->header.req_id = cpu_to_le16(xid);
 379         pcmd->header.prog = cpu_to_le16(SERVICE_PROG_ID);
 380         pcmd->header.version = cpu_to_le16(SERVICE_PROG_VERSION);
 381         pcmd->header.data_len = cpu_to_le16(cmd_len);
 382 }
 383
 384 /**
 385  * as10x_rsp_parse - Parse command response
 386  * @prsp:       pointer to AS10x command buffer
 387  * @proc_id:    id of the command
 388  *
 389  * Return 0 on success or negative value in case of error.
 390  */
 391 int as10x_rsp_parse(struct as10x_cmd_t *prsp, uint16_t proc_id)
 392 {
 393         int error;
 394
 395         /* extract command error code */
 396         error = prsp->body.common.rsp.error;
 397
 398         if ((error == 0) &&
 399             (le16_to_cpu(prsp->body.common.rsp.proc_id) == proc_id)) {
 400                 return 0;
 401         }
 402
 403         return AS10X_CMD_ERROR;
 404 }