target/linux/mpc83xx/patches-2.6.36/030-ucc_tdm.patch

   1 --- /dev/null
   2 +++ b/drivers/misc/ucc_tdm.h
   3 @@ -0,0 +1,221 @@
   4 +/*
   5 + * drivers/misc/ucc_tdm.h
   6 + *
   7 + * UCC Based Linux TDM Driver
   8 + * This driver is designed to support UCC based TDM for PowerPC processors.
   9 + * This driver can interface with SLIC device to run VOIP kind of
  10 + * applications.
  11 + *
  12 + * Author: Ashish Kalra & Poonam Aggrwal
  13 + *
  14 + * Copyright (c) 2007 Freescale Semiconductor, Inc.
  15 + *
  16 + * This program is free software; you can redistribute it and/or modify it
  17 + * under the terms of the GNU General Public License as published by the
  18 + * Free Software Foundation; either version 2 of the License, or (at your
  19 + * option) any later version.
  20 + */
  21 +
  22 +#ifndef TDM_H
  23 +#define TDM_H
  24 +
  25 +#define NUM_TS 8
  26 +#define ACTIVE_CH 8
  27 +
  28 +/* SAMPLE_DEPTH is the sample depth is the number of frames before
  29 + * an interrupt. Must be a multiple of 4
  30 + */
  31 +#define SAMPLE_DEPTH 80
  32 +
  33 +/* define the number of Rx interrupts to go by for initial stuttering */
  34 +#define STUTTER_INT_CNT 1
  35 +
  36 +/* BMRx Field Descriptions to specify tstate and rstate in UCC parameter RAM*/
  37 +#define EN_BUS_SNOOPING 0x20
  38 +#define BE_BO 0x10
  39 +
  40 +/* UPSMR Register for Transparent UCC controller Bit definitions*/
  41 +#define NBO 0x00000000 /* Normal Mode 1 bit of data per clock */
  42 +
  43 +/* SI Mode register bit definitions */
  44 +#define NORMAL_OPERATION 0x0000
  45 +#define AUTO_ECHO 0x0400
  46 +#define INTERNAL_LB 0x0800
  47 +#define CONTROL_LB 0x0c00
  48 +#define SIMODE_CRT (0x8000 >> 9)
  49 +#define SIMODE_SL (0x8000 >> 10)
  50 +#define SIMODE_CE (0x8000 >> 11)
  51 +#define SIMODE_FE (0x8000 >> 12)
  52 +#define SIMODE_GM (0x8000 >> 13)
  53 +#define SIMODE_TFSD(val) (val)
  54 +#define SIMODE_RFSD(val) ((val) << 8)
  55 +
  56 +#define SI_TDM_MODE_REGISTER_OFFSET 0
  57 +
  58 +#define R_CM 0x02000000
  59 +#define T_CM 0x02000000
  60 +
  61 +#define SET_RX_SI_RAM(n, val) \
  62 + out_be16((u16 *)&qe_immr->sir.rx[(n)*2], (u16)(val))
  63 +
  64 +#define SET_TX_SI_RAM(n, val) \
  65 + out_be16((u16 *)&qe_immr->sir.tx[(n)*2], (u16)(val))
  66 +
  67 +/* SI RAM entries */
  68 +#define SIR_LAST 0x0001
  69 +#define SIR_CNT(n) ((n) << 2)
  70 +#define SIR_BYTE 0x0002
  71 +#define SIR_BIT 0x0000
  72 +#define SIR_IDLE 0
  73 +#define SIR_UCC(uccx) (((uccx+9)) << 5)
  74 +
  75 +/* BRGC Register Bit definitions */
  76 +#define BRGC_RESET (0x1<<17)
  77 +#define BRGC_EN (0x1<<16)
  78 +#define BRGC_EXTC_QE (0x00<<14)
  79 +#define BRGC_EXTC_CLK3 (0x01<<14)
  80 +#define BRGC_EXTC_CLK5 (0x01<<15)
  81 +#define BRGC_EXTC_CLK9 (0x01<<14)
  82 +#define BRGC_EXTC_CLK11 (0x01<<14)
  83 +#define BRGC_EXTC_CLK13 (0x01<<14)
  84 +#define BRGC_EXTC_CLK15 (0x01<<15)
  85 +#define BRGC_ATB (0x1<<13)
  86 +#define BRGC_DIV16 (0x1)
  87 +
  88 +/* structure representing UCC transparent parameter RAM */
  89 +struct ucc_transparent_pram {
  90 + __be16 riptr;
  91 + __be16 tiptr;
  92 + __be16 res0;
  93 + __be16 mrblr;
  94 + __be32 rstate;
  95 + __be32 rbase;
  96 + __be16 rbdstat;
  97 + __be16 rbdlen;
  98 + __be32 rdptr;
  99 + __be32 tstate;
 100 + __be32 tbase;
 101 + __be16 tbdstat;
 102 + __be16 tbdlen;
 103 + __be32 tdptr;
 104 + __be32 rbptr;
 105 + __be32 tbptr;
 106 + __be32 rcrc;
 107 + __be32 res1;
 108 + __be32 tcrc;
 109 + __be32 res2;
 110 + __be32 res3;
 111 + __be32 c_mask;
 112 + __be32 c_pres;
 113 + __be16 disfc;
 114 + __be16 crcec;
 115 + __be32 res4[4];
 116 + __be16 ts_tmp;
 117 + __be16 tmp_mb;
 118 +};
 119 +
 120 +#define UCC_TRANSPARENT_PRAM_SIZE 0x100
 121 +
 122 +struct tdm_cfg {
 123 + u8 com_pin; /* Common receive and transmit pins
 124 + * 0 = separate pins
 125 + * 1 = common pins
 126 + */
 127 +
 128 + u8 fr_sync_level; /* SLx bit Frame Sync Polarity
 129 + * 0 = L1R/TSYNC active logic "1"
 130 + * 1 = L1R/TSYNC active logic "0"
 131 + */
 132 +
 133 + u8 clk_edge; /* CEx bit Tx Rx Clock Edge
 134 + * 0 = TX data on rising edge of clock
 135 + * RX data on falling edge
 136 + * 1 = TX data on falling edge of clock
 137 + * RX data on rising edge
 138 + */
 139 +
 140 + u8 fr_sync_edge; /* FEx bit Frame sync edge
 141 + * Determine when the sync pulses are sampled
 142 + * 0 = Falling edge
 143 + * 1 = Rising edge
 144 + */
 145 +
 146 + u8 rx_fr_sync_delay; /* TFSDx/RFSDx bits Frame Sync Delay
 147 + * 00 = no bit delay
 148 + * 01 = 1 bit delay
 149 + * 10 = 2 bit delay
 150 + * 11 = 3 bit delay
 151 + */
 152 +
 153 + u8 tx_fr_sync_delay; /* TFSDx/RFSDx bits Frame Sync Delay
 154 + * 00 = no bit delay
 155 + * 01 = 1 bit delay
 156 + * 10 = 2 bit delay
 157 + * 11 = 3 bit delay
 158 + */
 159 +
 160 + u8 active_num_ts; /* Number of active time slots in TDM
 161 + * assume same active Rx/Tx time slots
 162 + */
 163 +};
 164 +
 165 +struct ucc_tdm_info {
 166 + struct ucc_fast_info uf_info;
 167 + u32 ucc_busy;
 168 +};
 169 +
 170 +struct tdm_ctrl {
 171 + u32 device_busy;
 172 + struct device *device;
 173 + struct ucc_fast_private *uf_private;
 174 + struct ucc_tdm_info *ut_info;
 175 + u32 tdm_port; /* port for this tdm:TDMA,TDMB,TDMC,TDMD */
 176 + u32 si; /* serial interface: 0 or 1 */
 177 + struct ucc_fast __iomem *uf_regs; /* UCC Fast registers */
 178 + u16 rx_mask[8]; /* Active Receive channels LSB is ch0 */
 179 + u16 tx_mask[8]; /* Active Transmit channels LSB is ch0 */
 180 + /* Only channels less than the number of FRAME_SIZE are implemented */
 181 + struct tdm_cfg cfg_ctrl; /* Signaling controls configuration */
 182 + u8 *tdm_input_data; /* buffer used for Rx by the tdm */
 183 + u8 *tdm_output_data; /* buffer used for Tx by the tdm */
 184 +
 185 + dma_addr_t dma_input_addr; /* dma mapped buffer for TDM Rx */
 186 + dma_addr_t dma_output_addr; /* dma mapped buffer for TDM Tx */
 187 + u16 physical_num_ts; /* physical number of timeslots in the tdm
 188 + frame */
 189 + u32 phase_rx; /* cycles through 0, 1, 2 */
 190 + u32 phase_tx; /* cycles through 0, 1, 2 */
 191 + /*
 192 + * the following two variables are for dealing with "stutter" problem
 193 + * "stutter" period is about 20 frames or so, varies depending active
 194 + * channel num depending on the sample depth, the code should let a
 195 + * few Rx interrupts go by
 196 + */
 197 + u32 tdm_icnt;
 198 + u32 tdm_flag;
 199 + struct ucc_transparent_pram __iomem *ucc_pram;
 200 + struct qe_bd __iomem *tx_bd;
 201 + struct qe_bd __iomem *rx_bd;
 202 + u32 ucc_pram_offset;
 203 + u32 tx_bd_offset;
 204 + u32 rx_bd_offset;
 205 + u32 rx_ucode_buf_offset;
 206 + u32 tx_ucode_buf_offset;
 207 + bool leg_slic;
 208 + wait_queue_head_t wakeup_event;
 209 +};
 210 +
 211 +struct tdm_client {
 212 + u32 client_id;
 213 + void (*tdm_read)(u32 client_id, short chn_id,
 214 + short *pcm_buffer, short len);
 215 + void (*tdm_write)(u32 client_id, short chn_id,
 216 + short *pcm_buffer, short len);
 217 + wait_queue_head_t *wakeup_event;
 218 + };
 219 +
 220 +#define MAX_PHASE 1
 221 +#define NR_BUFS 2
 222 +#define EFF_ACTIVE_CH ACTIVE_CH / 2
 223 +
 224 +#endif
 225 --- /dev/null
 226 +++ b/drivers/misc/ucc_tdm.c
 227 @@ -0,0 +1,1017 @@
 228 +/*
 229 + * drivers/misc/ucc_tdm.c
 230 + *
 231 + * UCC Based Linux TDM Driver
 232 + * This driver is designed to support UCC based TDM for PowerPC processors.
 233 + * This driver can interface with SLIC device to run VOIP kind of
 234 + * applications.
 235 + *
 236 + * Author: Ashish Kalra & Poonam Aggrwal
 237 + *
 238 + * Copyright (c) 2007 Freescale Semiconductor, Inc.
 239 + *
 240 + * This program is free software; you can redistribute it and/or modify it
 241 + * under the terms of the GNU General Public License as published by the
 242 + * Free Software Foundation; either version 2 of the License, or (at your
 243 + * option) any later version.
 244 + */
 245 +
 246 +#include <generated/autoconf.h>
 247 +#include <linux/module.h>
 248 +#include <linux/sched.h>
 249 +#include <linux/kernel.h>
 250 +#include <linux/slab.h>
 251 +#include <linux/errno.h>
 252 +#include <linux/types.h>
 253 +#include <linux/interrupt.h>
 254 +#include <linux/time.h>
 255 +#include <linux/skbuff.h>
 256 +#include <linux/proc_fs.h>
 257 +#include <linux/delay.h>
 258 +#include <linux/dma-mapping.h>
 259 +#include <linux/string.h>
 260 +#include <linux/irq.h>
 261 +#include <linux/of_platform.h>
 262 +#include <linux/io.h>
 263 +#include <linux/wait.h>
 264 +#include <linux/timer.h>
 265 +
 266 +#include <asm/immap_qe.h>
 267 +#include <asm/qe.h>
 268 +#include <asm/ucc.h>
 269 +#include <asm/ucc_fast.h>
 270 +#include <asm/ucc_slow.h>
 271 +
 272 +#include "ucc_tdm.h"
 273 +#define DRV_DESC "Freescale QE UCC TDM Driver"
 274 +#define DRV_NAME "ucc_tdm"
 275 +
 276 +
 277 +/*
 278 + * define the following #define if snooping or hardware-based cache coherency
 279 + * is disabled on the UCC transparent controller.This flag enables
 280 + * software-based cache-coherency support by explicitly flushing data cache
 281 + * contents after setting up the TDM output buffer(s) and invalidating the
 282 + * data cache contents before the TDM input buffer(s) are read.
 283 + */
 284 +#undef UCC_CACHE_SNOOPING_DISABLED
 285 +
 286 +#define MAX_NUM_TDM_DEVICES 8
 287 +
 288 +static struct tdm_ctrl *tdm_ctrl[MAX_NUM_TDM_DEVICES];
 289 +
 290 +static int num_tdm_devices;
 291 +static int num_tdm_clients;
 292 +
 293 +static struct ucc_tdm_info utdm_primary_info = {
 294 + .uf_info = {
 295 + .tsa = 1,
 296 + .cdp = 1,
 297 + .cds = 1,
 298 + .ctsp = 1,
 299 + .ctss = 1,
 300 + .revd = 1,
 301 + .urfs = 0x128,
 302 + .utfs = 0x128,
 303 + .utfet = 0,
 304 + .utftt = 0x128,
 305 + .ufpt = 256,
 306 + .ttx_trx = UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_TRANSPARENT,
 307 + .tenc = UCC_FAST_TX_ENCODING_NRZ,
 308 + .renc = UCC_FAST_RX_ENCODING_NRZ,
 309 + .tcrc = UCC_FAST_16_BIT_CRC,
 310 + .synl = UCC_FAST_SYNC_LEN_NOT_USED,
 311 + },
 312 + .ucc_busy = 0,
 313 +};
 314 +
 315 +static struct ucc_tdm_info utdm_info[8];
 316 +
 317 +static void dump_siram(struct tdm_ctrl *tdm_c)
 318 +{
 319 +#ifdef DEBUG
 320 + int i;
 321 + u16 phy_num_ts;
 322 +
 323 + phy_num_ts = tdm_c->physical_num_ts;
 324 +
 325 + pr_debug("SI TxRAM dump\n");
 326 + /* each slot entry in SI RAM is of 2 bytes */
 327 + for (i = 0; i < phy_num_ts * 2; i++)
 328 + pr_debug("%x ", in_8(&qe_immr->sir.tx[i]));
 329 + pr_debug("\nSI RxRAM dump\n");
 330 + for (i = 0; i < phy_num_ts * 2; i++)
 331 + pr_debug("%x ", in_8(&qe_immr->sir.rx[i]));
 332 + pr_debug("\n");
 333 +#endif
 334 +}
 335 +
 336 +static void dump_ucc(struct tdm_ctrl *tdm_c)
 337 +{
 338 +#ifdef DEBUG
 339 + struct ucc_transparent_pram *ucc_pram;
 340 +
 341 + ucc_pram = tdm_c->ucc_pram;
 342 +
 343 + pr_debug("%s Dumping UCC Registers\n", __FUNCTION__);
 344 + ucc_fast_dump_regs(tdm_c->uf_private);
 345 + pr_debug("%s Dumping UCC Parameter RAM\n", __FUNCTION__);
 346 + pr_debug("rbase = 0x%x\n", in_be32(&ucc_pram->rbase));
 347 + pr_debug("rbptr = 0x%x\n", in_be32(&ucc_pram->rbptr));
 348 + pr_debug("mrblr = 0x%x\n", in_be16(&ucc_pram->mrblr));
 349 + pr_debug("rbdlen = 0x%x\n", in_be16(&ucc_pram->rbdlen));
 350 + pr_debug("rbdstat = 0x%x\n", in_be16(&ucc_pram->rbdstat));
 351 + pr_debug("rstate = 0x%x\n", in_be32(&ucc_pram->rstate));
 352 + pr_debug("rdptr = 0x%x\n", in_be32(&ucc_pram->rdptr));
 353 + pr_debug("tbase = 0x%x\n", in_be32(&ucc_pram->tbase));
 354 + pr_debug("tbptr = 0x%x\n", in_be32(&ucc_pram->tbptr));
 355 + pr_debug("tbdlen = 0x%x\n", in_be16(&ucc_pram->tbdlen));
 356 + pr_debug("tbdstat = 0x%x\n", in_be16(&ucc_pram->tbdstat));
 357 + pr_debug("tstate = 0x%x\n", in_be32(&ucc_pram->tstate));
 358 + pr_debug("tdptr = 0x%x\n", in_be32(&ucc_pram->tdptr));
 359 +#endif
 360 +}
 361 +
 362 +/*
 363 + * For use when a framing bit is not present
 364 + * Program current-route SI ram
 365 + * Set SIxRAM TDMx
 366 + * Entries must be in units of 8.
 367 + * SIR_UCC -> Channel Select
 368 + * SIR_CNT -> Number of bits or bytes
 369 + * SIR_BYTE -> Byte or Bit resolution
 370 + * SIR_LAST -> Indicates last entry in SIxRAM
 371 + * SIR_IDLE -> The Tx data pin is Tri-stated and the Rx data pin is
 372 + * ignored
 373 + */
 374 +static void set_siram(struct tdm_ctrl *tdm_c, enum comm_dir dir)
 375 +{
 376 + const u16 *mask;
 377 + u16 temp_mask = 1;
 378 + u16 siram_code = 0;
 379 + u32 i, j, k;
 380 + u32 ucc;
 381 + u32 phy_num_ts;
 382 +
 383 + phy_num_ts = tdm_c->physical_num_ts;
 384 + ucc = tdm_c->ut_info->uf_info.ucc_num;
 385 +
 386 + if (dir == COMM_DIR_RX)
 387 + mask = tdm_c->rx_mask;
 388 + else
 389 + mask = tdm_c->tx_mask;
 390 + k = 0;
 391 + j = 0;
 392 + for (i = 0; i < phy_num_ts; i++) {
 393 + if ((mask[k] & temp_mask) == temp_mask)
 394 + siram_code = SIR_UCC(ucc) | SIR_CNT(0) | SIR_BYTE;
 395 + else
 396 + siram_code = SIR_IDLE | SIR_CNT(0) | SIR_BYTE;
 397 + if (dir == COMM_DIR_RX)
 398 + out_be16((u16 *)&qe_immr->sir.rx[i * 2], siram_code);
 399 + else
 400 + out_be16((u16 *)&qe_immr->sir.tx[i * 2], siram_code);
 401 + temp_mask = temp_mask << 1;
 402 + j++;
 403 + if (j >= 16) {
 404 + j = 0;
 405 + temp_mask = 0x0001;
 406 + k++;
 407 + }
 408 + }
 409 + siram_code = siram_code | SIR_LAST;
 410 +
 411 + if (dir == COMM_DIR_RX)
 412 + out_be16((u16 *)&qe_immr->sir.rx[(phy_num_ts - 1) * 2],
 413 + siram_code);
 414 + else
 415 + out_be16((u16 *)&qe_immr->sir.tx[(phy_num_ts - 1) * 2],
 416 + siram_code);
 417 +}
 418 +
 419 +static void config_si(struct tdm_ctrl *tdm_c)
 420 +{
 421 + u8 rxsyncdelay, txsyncdelay, tdm_port;
 422 + u16 sixmr_val = 0;
 423 + u32 tdma_mode_off;
 424 + u16 *si1_tdm_mode_reg;
 425 +
 426 + tdm_port = tdm_c->tdm_port;
 427 +
 428 + set_siram(tdm_c, COMM_DIR_RX);
 429 +
 430 + set_siram(tdm_c, COMM_DIR_TX);
 431 +
 432 + rxsyncdelay = tdm_c->cfg_ctrl.rx_fr_sync_delay;
 433 + txsyncdelay = tdm_c->cfg_ctrl.tx_fr_sync_delay;
 434 + if (tdm_c->cfg_ctrl.com_pin)
 435 + sixmr_val |= SIMODE_CRT;
 436 + if (tdm_c->cfg_ctrl.fr_sync_level == 1)
 437 + sixmr_val |= SIMODE_SL;
 438 + if (tdm_c->cfg_ctrl.clk_edge == 1)
 439 + sixmr_val |= SIMODE_CE;
 440 + if (tdm_c->cfg_ctrl.fr_sync_edge == 1)
 441 + sixmr_val |= SIMODE_FE;
 442 + sixmr_val |= (SIMODE_TFSD(txsyncdelay) | SIMODE_RFSD(rxsyncdelay));
 443 +
 444 + tdma_mode_off = SI_TDM_MODE_REGISTER_OFFSET * tdm_c->tdm_port;
 445 +
 446 + si1_tdm_mode_reg = (u8 *)&qe_immr->si1 + tdma_mode_off;
 447 + out_be16(si1_tdm_mode_reg, sixmr_val);
 448 +
 449 + dump_siram(tdm_c);
 450 +}
 451 +
 452 +static int tdm_init(struct tdm_ctrl *tdm_c)
 453 +{
 454 + u32 tdm_port, ucc, act_num_ts;
 455 + int ret, i, err;
 456 + u32 cecr_subblock;
 457 + u32 pram_offset;
 458 + u32 rxbdt_offset;
 459 + u32 txbdt_offset;
 460 + u32 rx_ucode_buf_offset, tx_ucode_buf_offset;
 461 + u16 bd_status, bd_len;
 462 + enum qe_clock clock;
 463 + struct qe_bd __iomem *rx_bd, *tx_bd;
 464 +
 465 + tdm_port = tdm_c->tdm_port;
 466 + ucc = tdm_c->ut_info->uf_info.ucc_num;
 467 + act_num_ts = tdm_c->cfg_ctrl.active_num_ts;
 468 +
 469 + /*
 470 + * TDM Tx and Rx CLKs = 2048 KHz.
 471 + */
 472 + if (strstr(tdm_c->ut_info->uf_info.tdm_tx_clk, "BRG")) {
 473 + clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_tx_clk);
 474 + err = qe_setbrg(clock, 2048000, 1);
 475 + if (err < 0) {
 476 + printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
 477 + tdm_c->ut_info->uf_info.tdm_tx_clk);
 478 + return err;
 479 + }
 480 + }
 481 + if (strstr(tdm_c->ut_info->uf_info.tdm_rx_clk, "BRG")) {
 482 + clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_rx_clk);
 483 + err = qe_setbrg(clock, 2048000, 1);
 484 + if (err < 0) {
 485 + printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
 486 + tdm_c->ut_info->uf_info.tdm_rx_clk);
 487 + return err;
 488 + }
 489 + }
 490 + /*
 491 + * TDM FSyncs = 4 KHz.
 492 + */
 493 + if (strstr(tdm_c->ut_info->uf_info.tdm_tx_sync, "BRG")) {
 494 + clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_tx_sync);
 495 + err = qe_setbrg(clock, 4000, 1);
 496 + if (err < 0) {
 497 + printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
 498 + tdm_c->ut_info->uf_info.tdm_tx_sync);
 499 + return err;
 500 + }
 501 + }
 502 + if (strstr(tdm_c->ut_info->uf_info.tdm_rx_sync, "BRG")) {
 503 + clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_rx_sync);
 504 + err = qe_setbrg(clock, 4000, 1);
 505 + if (err < 0) {
 506 + printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
 507 + tdm_c->ut_info->uf_info.tdm_rx_sync);
 508 + return err;
 509 + }
 510 + }
 511 +
 512 + tdm_c->ut_info->uf_info.uccm_mask = (u32)
 513 + ((UCC_TRANS_UCCE_RXB | UCC_TRANS_UCCE_BSY) << 16);
 514 +
 515 + if (ucc_fast_init(&(tdm_c->ut_info->uf_info), &tdm_c->uf_private)) {
 516 + printk(KERN_ERR "%s: Failed to init uccf\n", __FUNCTION__);
 517 + return -ENOMEM;
 518 + }
 519 +
 520 + ucc_fast_disable(tdm_c->uf_private, COMM_DIR_RX | COMM_DIR_TX);
 521 +
 522 + /* Write to QE CECR, UCCx channel to Stop Transmission */
 523 + cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
 524 + qe_issue_cmd(QE_STOP_TX, cecr_subblock,
 525 + (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
 526 +
 527 + pram_offset = qe_muram_alloc(UCC_TRANSPARENT_PRAM_SIZE,
 528 + ALIGNMENT_OF_UCC_SLOW_PRAM);
 529 + if (IS_ERR_VALUE(pram_offset)) {
 530 + printk(KERN_ERR "%s: Cannot allocate MURAM memory for"
 531 + " transparent UCC\n", __FUNCTION__);
 532 + ret = -ENOMEM;
 533 + goto pram_alloc_error;
 534 + }
 535 +
 536 + cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
 537 + qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, cecr_subblock,
 538 + QE_CR_PROTOCOL_UNSPECIFIED, pram_offset);
 539 +
 540 + tdm_c->ucc_pram = qe_muram_addr(pram_offset);
 541 + tdm_c->ucc_pram_offset = pram_offset;
 542 +
 543 + /*
 544 + * zero-out pram, this will also ensure RSTATE, TSTATE are cleared, also
 545 + * DISFC & CRCEC counters will be initialized.
 546 + */
 547 + memset(tdm_c->ucc_pram, 0, sizeof(struct ucc_transparent_pram));
 548 +
 549 + /* rbase, tbase alignment is 8. */
 550 + rxbdt_offset = qe_muram_alloc(NR_BUFS * sizeof(struct qe_bd),
 551 + QE_ALIGNMENT_OF_BD);
 552 + if (IS_ERR_VALUE(rxbdt_offset)) {
 553 + printk(KERN_ERR "%s: Cannot allocate MURAM memory for RxBDs\n",
 554 + __FUNCTION__);
 555 + ret = -ENOMEM;
 556 + goto rxbd_alloc_error;
 557 + }
 558 + txbdt_offset = qe_muram_alloc(NR_BUFS * sizeof(struct qe_bd),
 559 + QE_ALIGNMENT_OF_BD);
 560 + if (IS_ERR_VALUE(txbdt_offset)) {
 561 + printk(KERN_ERR "%s: Cannot allocate MURAM memory for TxBDs\n",
 562 + __FUNCTION__);
 563 + ret = -ENOMEM;
 564 + goto txbd_alloc_error;
 565 + }
 566 + tdm_c->tx_bd = qe_muram_addr(txbdt_offset);
 567 + tdm_c->rx_bd = qe_muram_addr(rxbdt_offset);
 568 +
 569 + tdm_c->tx_bd_offset = txbdt_offset;
 570 + tdm_c->rx_bd_offset = rxbdt_offset;
 571 +
 572 + rx_bd = tdm_c->rx_bd;
 573 + tx_bd = tdm_c->tx_bd;
 574 +
 575 + out_be32(&tdm_c->ucc_pram->rbase, (u32) immrbar_virt_to_phys(rx_bd));
 576 + out_be32(&tdm_c->ucc_pram->tbase, (u32) immrbar_virt_to_phys(tx_bd));
 577 +
 578 + for (i = 0; i < NR_BUFS - 1; i++) {
 579 + bd_status = (u16) ((R_E | R_CM | R_I) >> 16);
 580 + bd_len = 0;
 581 + out_be16(&rx_bd->length, bd_len);
 582 + out_be16(&rx_bd->status, bd_status);
 583 + out_be32(&rx_bd->buf,
 584 + tdm_c->dma_input_addr + i * SAMPLE_DEPTH * act_num_ts);
 585 + rx_bd += 1;
 586 +
 587 + bd_status = (u16) ((T_R | T_CM) >> 16);
 588 + bd_len = SAMPLE_DEPTH * act_num_ts;
 589 + out_be16(&tx_bd->length, bd_len);
 590 + out_be16(&tx_bd->status, bd_status);
 591 + out_be32(&tx_bd->buf,
 592 + tdm_c->dma_output_addr + i * SAMPLE_DEPTH * act_num_ts);
 593 + tx_bd += 1;
 594 + }
 595 +
 596 + bd_status = (u16) ((R_E | R_CM | R_I | R_W) >> 16);
 597 + bd_len = 0;
 598 + out_be16(&rx_bd->length, bd_len);
 599 + out_be16(&rx_bd->status, bd_status);
 600 + out_be32(&rx_bd->buf,
 601 + tdm_c->dma_input_addr + i * SAMPLE_DEPTH * act_num_ts);
 602 +
 603 + bd_status = (u16) ((T_R | T_CM | T_W) >> 16);
 604 + bd_len = SAMPLE_DEPTH * act_num_ts;
 605 + out_be16(&tx_bd->length, bd_len);
 606 + out_be16(&tx_bd->status, bd_status);
 607 + out_be32(&tx_bd->buf,
 608 + tdm_c->dma_output_addr + i * SAMPLE_DEPTH * act_num_ts);
 609 +
 610 + config_si(tdm_c);
 611 +
 612 + setbits32(&qe_immr->ic.qimr, (0x80000000UL >> ucc));
 613 +
 614 + rx_ucode_buf_offset = qe_muram_alloc(32, 32);
 615 + if (IS_ERR_VALUE(rx_ucode_buf_offset)) {
 616 + printk(KERN_ERR "%s: Cannot allocate MURAM mem for Rx"
 617 + " ucode buf\n", __FUNCTION__);
 618 + ret = -ENOMEM;
 619 + goto rxucode_buf_alloc_error;
 620 + }
 621 +
 622 + tx_ucode_buf_offset = qe_muram_alloc(32, 32);
 623 + if (IS_ERR_VALUE(tx_ucode_buf_offset)) {
 624 + printk(KERN_ERR "%s: Cannot allocate MURAM mem for Tx"
 625 + " ucode buf\n", __FUNCTION__);
 626 + ret = -ENOMEM;
 627 + goto txucode_buf_alloc_error;
 628 + }
 629 + out_be16(&tdm_c->ucc_pram->riptr, (u16) rx_ucode_buf_offset);
 630 + out_be16(&tdm_c->ucc_pram->tiptr, (u16) tx_ucode_buf_offset);
 631 +
 632 + tdm_c->rx_ucode_buf_offset = rx_ucode_buf_offset;
 633 + tdm_c->tx_ucode_buf_offset = tx_ucode_buf_offset;
 634 +
 635 + /*
 636 + * set the receive buffer descriptor maximum size to be
 637 + * SAMPLE_DEPTH * number of active RX channels
 638 + */
 639 + out_be16(&tdm_c->ucc_pram->mrblr, (u16) SAMPLE_DEPTH * act_num_ts);
 640 +
 641 + /*
 642 + * enable snooping and BE byte ordering on the UCC pram's
 643 + * tstate & rstate registers.
 644 + */
 645 + out_be32(&tdm_c->ucc_pram->tstate, 0x30000000UL);
 646 + out_be32(&tdm_c->ucc_pram->rstate, 0x30000000UL);
 647 +
 648 + /*Put UCC transparent controller into serial interface mode. */
 649 + out_be32(&tdm_c->uf_regs->upsmr, 0);
 650 +
 651 + /* Reset TX and RX for UCCx */
 652 + cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
 653 + qe_issue_cmd(QE_INIT_TX_RX, cecr_subblock,
 654 + (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
 655 +
 656 + return 0;
 657 +
 658 +txucode_buf_alloc_error:
 659 + qe_muram_free(rx_ucode_buf_offset);
 660 +rxucode_buf_alloc_error:
 661 + qe_muram_free(txbdt_offset);
 662 +txbd_alloc_error:
 663 + qe_muram_free(rxbdt_offset);
 664 +rxbd_alloc_error:
 665 + qe_muram_free(pram_offset);
 666 +pram_alloc_error:
 667 + ucc_fast_free(tdm_c->uf_private);
 668 + return ret;
 669 +}
 670 +
 671 +static void tdm_deinit(struct tdm_ctrl *tdm_c)
 672 +{
 673 + qe_muram_free(tdm_c->rx_ucode_buf_offset);
 674 + qe_muram_free(tdm_c->tx_ucode_buf_offset);
 675 +
 676 + if (tdm_c->rx_bd_offset) {
 677 + qe_muram_free(tdm_c->rx_bd_offset);
 678 + tdm_c->rx_bd = NULL;
 679 + tdm_c->rx_bd_offset = 0;
 680 + }
 681 + if (tdm_c->tx_bd_offset) {
 682 + qe_muram_free(tdm_c->tx_bd_offset);
 683 + tdm_c->tx_bd = NULL;
 684 + tdm_c->tx_bd_offset = 0;
 685 + }
 686 + if (tdm_c->ucc_pram_offset) {
 687 + qe_muram_free(tdm_c->ucc_pram_offset);
 688 + tdm_c->ucc_pram = NULL;
 689 + tdm_c->ucc_pram_offset = 0;
 690 + }
 691 +}
 692 +
 693 +
 694 +static irqreturn_t tdm_isr(int irq, void *dev_id)
 695 +{
 696 + u8 *input_tdm_buffer, *output_tdm_buffer;
 697 + u32 txb, rxb;
 698 + u32 ucc;
 699 + register u32 ucce = 0;
 700 + struct tdm_ctrl *tdm_c;
 701 + tdm_c = (struct tdm_ctrl *)dev_id;
 702 +
 703 + tdm_c->tdm_icnt++;
 704 + ucc = tdm_c->ut_info->uf_info.ucc_num;
 705 + input_tdm_buffer = tdm_c->tdm_input_data;
 706 + output_tdm_buffer = tdm_c->tdm_output_data;
 707 +
 708 + if (in_be32(tdm_c->uf_private->p_ucce) &
 709 + (UCC_TRANS_UCCE_BSY << 16)) {
 710 + out_be32(tdm_c->uf_private->p_ucce,
 711 + (UCC_TRANS_UCCE_BSY << 16));
 712 + pr_info("%s: From tdm isr busy interrupt\n",
 713 + __FUNCTION__);
 714 + dump_ucc(tdm_c);
 715 +
 716 + return IRQ_HANDLED;
 717 + }
 718 +
 719 + if (tdm_c->tdm_flag == 1) {
 720 + /* track phases for Rx/Tx */
 721 + tdm_c->phase_rx += 1;
 722 + if (tdm_c->phase_rx == MAX_PHASE)
 723 + tdm_c->phase_rx = 0;
 724 +
 725 + tdm_c->phase_tx += 1;
 726 + if (tdm_c->phase_tx == MAX_PHASE)
 727 + tdm_c->phase_tx = 0;
 728 +
 729 +#ifdef CONFIG_TDM_HW_LB_TSA_SLIC
 730 + {
 731 + u32 temp_rx, temp_tx, phase_tx, phase_rx;
 732 + int i;
 733 + phase_rx = tdm_c->phase_rx;
 734 + phase_tx = tdm_c->phase_tx;
 735 + if (phase_rx == 0)
 736 + phase_rx = MAX_PHASE;
 737 + else
 738 + phase_rx -= 1;
 739 + if (phase_tx == 0)
 740 + phase_tx = MAX_PHASE;
 741 + else
 742 + phase_tx -= 1;
 743 + temp_rx = phase_rx * SAMPLE_DEPTH * ACTIVE_CH;
 744 + temp_tx = phase_tx * SAMPLE_DEPTH * ACTIVE_CH;
 745 +
 746 + /*check if loopback received data on TS0 is correct. */
 747 + pr_debug("%s: check if loopback received data on TS0"
 748 + " is correct\n", __FUNCTION__);
 749 + pr_debug("%d,%d ", phase_rx, phase_tx);
 750 + for (i = 0; i < 8; i++)
 751 + pr_debug("%1d,%1d ",
 752 + input_tdm_buffer[temp_rx + i],
 753 + output_tdm_buffer[temp_tx + i]);
 754 + pr_debug("\n");
 755 + }
 756 +#endif
 757 +
 758 + /* schedule BH */
 759 + wake_up_interruptible(&tdm_c->wakeup_event);
 760 + } else {
 761 + if (tdm_c->tdm_icnt == STUTTER_INT_CNT) {
 762 + txb = in_be32(&tdm_c->ucc_pram->tbptr) -
 763 + in_be32(&tdm_c->ucc_pram->tbase);
 764 + rxb = in_be32(&tdm_c->ucc_pram->rbptr) -
 765 + in_be32(&tdm_c->ucc_pram->rbase);
 766 + tdm_c->phase_tx = txb / sizeof(struct qe_bd);
 767 + tdm_c->phase_rx = rxb / sizeof(struct qe_bd);
 768 +
 769 +#ifdef CONFIG_TDM_HW_LB_TSA_SLIC
 770 + tdm_c->phase_tx = tdm_c->phase_rx;
 771 +#endif
 772 +
 773 + /* signal "stuttering" period is over */
 774 + tdm_c->tdm_flag = 1;
 775 +
 776 + pr_debug("%s: stuttering period is over\n",
 777 + __FUNCTION__);
 778 +
 779 + if (in_be32(tdm_c->uf_private->p_ucce) &
 780 + (UCC_TRANS_UCCE_TXE << 16)) {
 781 + u32 cecr_subblock;
 782 + out_be32(tdm_c->uf_private->p_ucce,
 783 + (UCC_TRANS_UCCE_TXE << 16));
 784 + pr_debug("%s: From tdm isr txe interrupt\n",
 785 + __FUNCTION__);
 786 +
 787 + cecr_subblock =
 788 + ucc_fast_get_qe_cr_subblock(ucc);
 789 + qe_issue_cmd(QE_RESTART_TX, cecr_subblock,
 790 + (u8) QE_CR_PROTOCOL_UNSPECIFIED,
 791 + 0);
 792 + }
 793 + }
 794 + }
 795 +
 796 + ucce = (in_be32(tdm_c->uf_private->p_ucce)
 797 + & in_be32(tdm_c->uf_private->p_uccm));
 798 +
 799 + out_be32(tdm_c->uf_private->p_ucce, ucce);
 800 +
 801 + return IRQ_HANDLED;
 802 +}
 803 +
 804 +static int tdm_start(struct tdm_ctrl *tdm_c)
 805 +{
 806 + if (request_irq(tdm_c->ut_info->uf_info.irq, tdm_isr,
 807 + 0, "tdm", tdm_c)) {
 808 + printk(KERN_ERR "%s: request_irq for tdm_isr failed\n",
 809 + __FUNCTION__);
 810 + return -ENODEV;
 811 + }
 812 +
 813 + ucc_fast_enable(tdm_c->uf_private, COMM_DIR_RX | COMM_DIR_TX);
 814 +
 815 + pr_info("%s 16-bit linear pcm mode active with"
 816 + " slots 0 & 2\n", __FUNCTION__);
 817 +
 818 + dump_siram(tdm_c);
 819 + dump_ucc(tdm_c);
 820 +
 821 + setbits8(&(qe_immr->si1.siglmr1_h), (0x1 << tdm_c->tdm_port));
 822 + pr_info("%s UCC based TDM enabled\n", __FUNCTION__);
 823 +
 824 + return 0;
 825 +}
 826 +
 827 +static void tdm_stop(struct tdm_ctrl *tdm_c)
 828 +{
 829 + u32 port, si;
 830 + u32 ucc;
 831 + u32 cecr_subblock;
 832 +
 833 + port = tdm_c->tdm_port;
 834 + si = tdm_c->si;
 835 + ucc = tdm_c->ut_info->uf_info.ucc_num;
 836 + cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
 837 +
 838 + qe_issue_cmd(QE_GRACEFUL_STOP_TX, cecr_subblock,
 839 + (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
 840 + qe_issue_cmd(QE_CLOSE_RX_BD, cecr_subblock,
 841 + (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
 842 +
 843 + clrbits8(&qe_immr->si1.siglmr1_h, (0x1 << port));
 844 + ucc_fast_disable(tdm_c->uf_private, COMM_DIR_RX);
 845 + ucc_fast_disable(tdm_c->uf_private, COMM_DIR_TX);
 846 + free_irq(tdm_c->ut_info->uf_info.irq, tdm_c);
 847 +}
 848 +
 849 +
 850 +static void config_tdm(struct tdm_ctrl *tdm_c)
 851 +{
 852 + u32 i, j, k;
 853 +
 854 + j = 0;
 855 + k = 0;
 856 +
 857 + /* Set Mask Bits */
 858 + for (i = 0; i < ACTIVE_CH; i++) {
 859 + tdm_c->tx_mask[k] |= (1 << j);
 860 + tdm_c->rx_mask[k] |= (1 << j);
 861 + j++;
 862 + if (j >= 16) {
 863 + j = 0;
 864 + k++;
 865 + }
 866 + }
 867 + /* physical number of slots in a frame */
 868 + tdm_c->physical_num_ts = NUM_TS;
 869 +
 870 + /* common receive and transmit pins */
 871 + tdm_c->cfg_ctrl.com_pin = 1;
 872 +
 873 + /* L1R/TSYNC active logic "1" */
 874 + tdm_c->cfg_ctrl.fr_sync_level = 0;
 875 +
 876 + /*
 877 + * TX data on rising edge of clock
 878 + * RX data on falling edge
 879 + */
 880 + tdm_c->cfg_ctrl.clk_edge = 0;
 881 +
 882 + /* Frame sync sampled on falling edge */
 883 + tdm_c->cfg_ctrl.fr_sync_edge = 0;
 884 +
 885 + /* no bit delay */
 886 + tdm_c->cfg_ctrl.rx_fr_sync_delay = 0;
 887 +
 888 + /* no bit delay */
 889 + tdm_c->cfg_ctrl.tx_fr_sync_delay = 0;
 890 +
 891 +#ifndef CONFIG_TDM_HW_LB_TSA_SLIC
 892 + if (tdm_c->leg_slic) {
 893 + /* Need 1 bit delay for Legrity SLIC */
 894 + tdm_c->cfg_ctrl.rx_fr_sync_delay = 1;
 895 + tdm_c->cfg_ctrl.tx_fr_sync_delay = 1;
 896 + pr_info("%s Delay for Legerity!\n", __FUNCTION__);
 897 + }
 898 +#endif
 899 +
 900 + tdm_c->cfg_ctrl.active_num_ts = ACTIVE_CH;
 901 +}
 902 +
 903 +static void tdm_read(u32 client_id, short chn_id, short *pcm_buffer,
 904 + short len)
 905 +{
 906 + int i;
 907 + u32 phase_rx;
 908 + /* point to where to start for the current phase data processing */
 909 + u32 temp_rx;
 910 +
 911 + struct tdm_ctrl *tdm_c = tdm_ctrl[client_id];
 912 +
 913 + u16 *input_tdm_buffer =
 914 + (u16 *)tdm_c->tdm_input_data;
 915 +
 916 + phase_rx = tdm_c->phase_rx;
 917 + if (phase_rx == 0)
 918 + phase_rx = MAX_PHASE;
 919 + else
 920 + phase_rx -= 1;
 921 +
 922 + temp_rx = phase_rx * SAMPLE_DEPTH * EFF_ACTIVE_CH;
 923 +
 924 +#ifdef UCC_CACHE_SNOOPING_DISABLED
 925 + flush_dcache_range((size_t) &input_tdm_buffer[temp_rx],
 926 + (size_t) &input_tdm_buffer[temp_rx +
 927 + SAMPLE_DEPTH * ACTIVE_CH]);
 928 +#endif
 929 + for (i = 0; i < len; i++)
 930 + pcm_buffer[i] =
 931 + input_tdm_buffer[i * EFF_ACTIVE_CH + temp_rx + chn_id];
 932 +
 933 +}
 934 +
 935 +static void tdm_write(u32 client_id, short chn_id, short *pcm_buffer,
 936 + short len)
 937 +{
 938 + int i;
 939 + int phase_tx;
 940 + u32 txb;
 941 + /* point to where to start for the current phase data processing */
 942 + int temp_tx;
 943 + struct tdm_ctrl *tdm_c = tdm_ctrl[client_id];
 944 +
 945 + u16 *output_tdm_buffer;
 946 + output_tdm_buffer = (u16 *)tdm_c->tdm_output_data;
 947 + txb = in_be32(&tdm_c->ucc_pram->tbptr) -
 948 + in_be32(&tdm_c->ucc_pram->tbase);
 949 + phase_tx = txb / sizeof(struct qe_bd);
 950 +
 951 + if (phase_tx == 0)
 952 + phase_tx = MAX_PHASE;
 953 + else
 954 + phase_tx -= 1;
 955 +
 956 + temp_tx = phase_tx * SAMPLE_DEPTH * EFF_ACTIVE_CH;
 957 +
 958 + for (i = 0; i < len; i++)
 959 + output_tdm_buffer[i * EFF_ACTIVE_CH + temp_tx + chn_id] =
 960 + pcm_buffer[i];
 961 +
 962 +#ifdef UCC_CACHE_SNOOPING_DISABLED
 963 + flush_dcache_range((size_t) &output_tdm_buffer[temp_tx],
 964 + (size_t) &output_tdm_buffer[temp_tx + SAMPLE_DEPTH *
 965 + ACTIVE_CH]);
 966 +#endif
 967 +}
 968 +
 969 +
 970 +static int tdm_register_client(struct tdm_client *tdm_client)
 971 +{
 972 + u32 i;
 973 + if (num_tdm_clients == num_tdm_devices) {
 974 + printk(KERN_ERR "all TDM devices busy\n");
 975 + return -EBUSY;
 976 + }
 977 +
 978 + for (i = 0; i < num_tdm_devices; i++) {
 979 + if (!tdm_ctrl[i]->device_busy) {
 980 + tdm_ctrl[i]->device_busy = 1;
 981 + break;
 982 + }
 983 + }
 984 + num_tdm_clients++;
 985 + tdm_client->client_id = i;
 986 + tdm_client->tdm_read = tdm_read;
 987 + tdm_client->tdm_write = tdm_write;
 988 + tdm_client->wakeup_event =
 989 + &(tdm_ctrl[i]->wakeup_event);
 990 + return 0;
 991 +}
 992 +EXPORT_SYMBOL_GPL(tdm_register_client);
 993 +
 994 +static int tdm_deregister_client(struct tdm_client *tdm_client)
 995 +{
 996 + num_tdm_clients--;
 997 + tdm_ctrl[tdm_client->client_id]->device_busy = 0;
 998 + return 0;
 999 +}
1000 +EXPORT_SYMBOL_GPL(tdm_deregister_client);
1001 +
1002 +static int ucc_tdm_probe(struct of_device *ofdev,
1003 + const struct of_device_id *match)
1004 +{
1005 + struct device_node *np = ofdev->node;
1006 + struct resource res;
1007 + const unsigned int *prop;
1008 + u32 ucc_num, device_num, err, ret = 0;
1009 + struct device_node *np_tmp;
1010 + dma_addr_t physaddr;
1011 + void *tdm_buff;
1012 + struct ucc_tdm_info *ut_info;
1013 +
1014 + prop = of_get_property(np, "device-id", NULL);
1015 + if (prop == NULL) {
1016 + printk(KERN_ERR "ucc_tdm: device-id missing\n");
1017 + return -ENODEV;
1018 + }
1019 +
1020 + ucc_num = *prop - 1;
1021 + if ((ucc_num < 0) || (ucc_num > 7))
1022 + return -ENODEV;
1023 +
1024 + ut_info = &utdm_info[ucc_num];
1025 + if (ut_info->ucc_busy) {
1026 + printk(KERN_ERR "ucc_tdm: UCC in use by another TDM driver"
1027 + "instance\n");
1028 + return -EBUSY;
1029 + }
1030 + if (num_tdm_devices == MAX_NUM_TDM_DEVICES) {
1031 + printk(KERN_ERR "ucc_tdm: All TDM devices already"
1032 + " initialized\n");
1033 + return -ENODEV;
1034 + }
1035 +
1036 + ut_info->ucc_busy = 1;
1037 + tdm_ctrl[num_tdm_devices++] =
1038 + kzalloc(sizeof(struct tdm_ctrl), GFP_KERNEL);
1039 + if (!tdm_ctrl[num_tdm_devices - 1]) {
1040 + printk(KERN_ERR "ucc_tdm: no memory to allocate for"
1041 + " tdm control structure\n");
1042 + num_tdm_devices--;
1043 + return -ENOMEM;
1044 + }
1045 + device_num = num_tdm_devices - 1;
1046 +
1047 + tdm_ctrl[device_num]->device = &ofdev->dev;
1048 + tdm_ctrl[device_num]->ut_info = ut_info;
1049 +
1050 + tdm_ctrl[device_num]->ut_info->uf_info.ucc_num = ucc_num;
1051 +
1052 + prop = of_get_property(np, "fsl,tdm-num", NULL);
1053 + if (prop == NULL) {
1054 + ret = -EINVAL;
1055 + goto get_property_error;
1056 + }
1057 +
1058 + tdm_ctrl[device_num]->tdm_port = *prop - 1;
1059 +
1060 + if (tdm_ctrl[device_num]->tdm_port > 3) {
1061 + ret = -EINVAL;
1062 + goto get_property_error;
1063 + }
1064 +
1065 + prop = of_get_property(np, "fsl,si-num", NULL);
1066 + if (prop == NULL) {
1067 + ret = -EINVAL;
1068 + goto get_property_error;
1069 + }
1070 +
1071 + tdm_ctrl[device_num]->si = *prop - 1;
1072 +
1073 + tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_clk =
1074 + of_get_property(np, "fsl,tdm-tx-clk", NULL);
1075 + if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_clk == NULL) {
1076 + ret = -EINVAL;
1077 + goto get_property_error;
1078 + }
1079 +
1080 + tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_clk =
1081 + of_get_property(np, "fsl,tdm-rx-clk", NULL);
1082 + if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_clk == NULL) {
1083 + ret = -EINVAL;
1084 + goto get_property_error;
1085 + }
1086 +
1087 + tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_sync =
1088 + of_get_property(np, "fsl,tdm-tx-sync", NULL);
1089 + if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_sync == NULL) {
1090 + ret = -EINVAL;
1091 + goto get_property_error;
1092 + }
1093 +
1094 + tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_sync =
1095 + of_get_property(np, "fsl,tdm-rx-sync", NULL);
1096 + if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_sync == NULL) {
1097 + ret = -EINVAL;
1098 + goto get_property_error;
1099 + }
1100 +
1101 + tdm_ctrl[device_num]->ut_info->uf_info.irq =
1102 + irq_of_parse_and_map(np, 0);
1103 + err = of_address_to_resource(np, 0, &res);
1104 + if (err) {
1105 + ret = -EINVAL;
1106 + goto get_property_error;
1107 + }
1108 + tdm_ctrl[device_num]->ut_info->uf_info.regs = res.start;
1109 + tdm_ctrl[device_num]->uf_regs = of_iomap(np, 0);
1110 +
1111 + np_tmp = NULL;
1112 + np_tmp = of_find_compatible_node(np_tmp, "slic", "legerity-slic");
1113 + if (np_tmp != NULL) {
1114 + tdm_ctrl[device_num]->leg_slic = 1;
1115 + of_node_put(np_tmp);
1116 + } else
1117 + tdm_ctrl[device_num]->leg_slic = 0;
1118 +
1119 + config_tdm(tdm_ctrl[device_num]);
1120 +
1121 + tdm_buff = dma_alloc_coherent(NULL, 2 * NR_BUFS * SAMPLE_DEPTH *
1122 + tdm_ctrl[device_num]->cfg_ctrl.active_num_ts,
1123 + &physaddr, GFP_KERNEL);
1124 + if (!tdm_buff) {
1125 + printk(KERN_ERR "ucc-tdm: could not allocate buffer"
1126 + "descriptors\n");
1127 + ret = -ENOMEM;
1128 + goto alloc_error;
1129 + }
1130 +
1131 + tdm_ctrl[device_num]->tdm_input_data = tdm_buff;
1132 + tdm_ctrl[device_num]->dma_input_addr = physaddr;
1133 +
1134 + tdm_ctrl[device_num]->tdm_output_data = tdm_buff + NR_BUFS *
1135 + SAMPLE_DEPTH * tdm_ctrl[device_num]->cfg_ctrl.active_num_ts;
1136 + tdm_ctrl[device_num]->dma_output_addr = physaddr + NR_BUFS *
1137 + SAMPLE_DEPTH * tdm_ctrl[device_num]->cfg_ctrl.active_num_ts;
1138 +
1139 + init_waitqueue_head(&(tdm_ctrl[device_num]->wakeup_event));
1140 +
1141 + ret = tdm_init(tdm_ctrl[device_num]);
1142 + if (ret != 0)
1143 + goto tdm_init_error;
1144 +
1145 + ret = tdm_start(tdm_ctrl[device_num]);
1146 + if (ret != 0)
1147 + goto tdm_start_error;
1148 +
1149 + dev_set_drvdata(&(ofdev->dev), tdm_ctrl[device_num]);
1150 +
1151 + pr_info("%s UCC based tdm module installed\n", __FUNCTION__);
1152 + return 0;
1153 +
1154 +tdm_start_error:
1155 + tdm_deinit(tdm_ctrl[device_num]);
1156 +tdm_init_error:
1157 + dma_free_coherent(NULL, 2 * NR_BUFS * SAMPLE_DEPTH *
1158 + tdm_ctrl[device_num]->cfg_ctrl.active_num_ts,
1159 + tdm_ctrl[device_num]->tdm_input_data,
1160 + tdm_ctrl[device_num]->dma_input_addr);
1161 +
1162 +alloc_error:
1163 + irq_dispose_mapping(tdm_ctrl[device_num]->ut_info->uf_info.irq);
1164 + iounmap(tdm_ctrl[device_num]->uf_regs);
1165 +
1166 +get_property_error:
1167 + num_tdm_devices--;
1168 + kfree(tdm_ctrl[device_num]);
1169 + ut_info->ucc_busy = 0;
1170 + return ret;
1171 +}
1172 +
1173 +static int ucc_tdm_remove(struct of_device *ofdev)
1174 +{
1175 + struct tdm_ctrl *tdm_c;
1176 + struct ucc_tdm_info *ut_info;
1177 + u32 ucc_num;
1178 +
1179 + tdm_c = dev_get_drvdata(&(ofdev->dev));
1180 + dev_set_drvdata(&(ofdev->dev), NULL);
1181 + ucc_num = tdm_c->ut_info->uf_info.ucc_num;
1182 + ut_info = &utdm_info[ucc_num];
1183 + tdm_stop(tdm_c);
1184 + tdm_deinit(tdm_c);
1185 +
1186 + ucc_fast_free(tdm_c->uf_private);
1187 +
1188 + dma_free_coherent(NULL, 2 * NR_BUFS * SAMPLE_DEPTH *
1189 + tdm_c->cfg_ctrl.active_num_ts,
1190 + tdm_c->tdm_input_data,
1191 + tdm_c->dma_input_addr);
1192 +
1193 + irq_dispose_mapping(tdm_c->ut_info->uf_info.irq);
1194 + iounmap(tdm_c->uf_regs);
1195 +
1196 + num_tdm_devices--;
1197 + kfree(tdm_c);
1198 +
1199 + ut_info->ucc_busy = 0;
1200 +
1201 + pr_info("%s UCC based tdm module uninstalled\n", __FUNCTION__);
1202 + return 0;
1203 +}
1204 +
1205 +const struct of_device_id ucc_tdm_match[] = {
1206 + { .type = "tdm", .compatible = "fsl,ucc-tdm", },
1207 + {},
1208 +};
1209 +
1210 +MODULE_DEVICE_TABLE(of, ucc_tdm_match);
1211 +
1212 +static struct of_platform_driver ucc_tdm_driver = {
1213 + .name = DRV_NAME,
1214 + .match_table = ucc_tdm_match,
1215 + .probe = ucc_tdm_probe,
1216 + .remove = ucc_tdm_remove,
1217 + .driver = {
1218 + .name = DRV_NAME,
1219 + .owner = THIS_MODULE,
1220 + },
1221 +};
1222 +
1223 +static int __init ucc_tdm_init(void)
1224 +{
1225 + u32 i;
1226 +
1227 + pr_info("ucc_tdm: " DRV_DESC "\n");
1228 + for (i = 0; i < 8; i++)
1229 + memcpy(&(utdm_info[i]), &utdm_primary_info,
1230 + sizeof(utdm_primary_info));
1231 +
1232 + return of_register_platform_driver(&ucc_tdm_driver);
1233 +}
1234 +
1235 +static void __exit ucc_tdm_exit(void)
1236 +{
1237 + of_unregister_platform_driver(&ucc_tdm_driver);
1238 +}
1239 +
1240 +module_init(ucc_tdm_init);
1241 +module_exit(ucc_tdm_exit);
1242 +MODULE_AUTHOR("Freescale Semiconductor, Inc");
1243 +MODULE_DESCRIPTION(DRV_DESC);
1244 +MODULE_LICENSE("GPL");
1245 --- a/drivers/misc/Makefile
1246 +++ b/drivers/misc/Makefile
1247 @@ -9,6 +9,7 @@ obj-$(CONFIG_AD525X_DPOT_SPI)   += ad525x_
1248  obj-$(CONFIG_ATMEL_PWM)                += atmel_pwm.o
1249  obj-$(CONFIG_ATMEL_SSC)                += atmel-ssc.o
1250  obj-$(CONFIG_ATMEL_TCLIB)      += atmel_tclib.o
1251 +obj-$(CONFIG_UCC_TDM)          += ucc_tdm.o
1252  obj-$(CONFIG_BMP085)           += bmp085.o
1253  obj-$(CONFIG_ICS932S401)       += ics932s401.o
1254  obj-$(CONFIG_LKDTM)            += lkdtm.o
1255 --- a/drivers/misc/Kconfig
1256 +++ b/drivers/misc/Kconfig
1257 @@ -164,6 +164,20 @@ config ATMEL_SSC
1258
1259           If unsure, say N.
1260
1261 +config UCC_TDM
1262 +       tristate "Freescale UCC TDM Driver"
1263 +       depends on QUICC_ENGINE && UCC_FAST
1264 +       default n
1265 +       help
1266 +        The TDM driver is for UCC based TDM devices for example, TDM device on
1267 +        MPC832x RDB. Select it to run PowerVoIP on MPC832x RDB board.
1268 +        The TDM driver can interface with SLIC kind of devices to transmit
1269 +        and receive TDM samples. The TDM driver receives Time Division
1270 +        multiplexed samples(for different channels) from the SLIC device,
1271 +        demutiplexes them and sends them to the upper layers. At the transmit
1272 +        end the TDM drivers receives samples for different channels, it
1273 +        multiplexes them and sends them to the SLIC device.
1274 +
1275  config ENCLOSURE_SERVICES
1276         tristate "Enclosure Services"
1277         default n
1278 --- a/arch/powerpc/include/asm/ucc_fast.h
1279 +++ b/arch/powerpc/include/asm/ucc_fast.h
1280 @@ -150,6 +150,10 @@ struct ucc_fast_info {
1281         enum ucc_fast_rx_decoding_method renc;
1282         enum ucc_fast_transparent_tcrc tcrc;
1283         enum ucc_fast_sync_len synl;
1284 +       char *tdm_rx_clk;
1285 +       char *tdm_tx_clk;
1286 +       char *tdm_rx_sync;
1287 +       char *tdm_tx_sync;
1288  };
1289
1290  struct ucc_fast_private {
1291 --- a/arch/powerpc/include/asm/qe.h
1292 +++ b/arch/powerpc/include/asm/qe.h
1293 @@ -669,6 +669,14 @@ struct ucc_slow_pram {
1294  #define UCC_GETH_UCCE_RXF1      0x00000002
1295  #define UCC_GETH_UCCE_RXF0      0x00000001
1296
1297 +/* Transparent UCC Event Register (UCCE) */
1298 +#define UCC_TRANS_UCCE_GRA 0x0080
1299 +#define UCC_TRANS_UCCE_TXE 0x0010
1300 +#define UCC_TRANS_UCCE_RXF 0x0008
1301 +#define UCC_TRANS_UCCE_BSY 0x0004
1302 +#define UCC_TRANS_UCCE_TXB 0x0002
1303 +#define UCC_TRANS_UCCE_RXB 0x0001
1304 +
1305  /* UCC Protocol Specific Mode Register (UPSMR), when used for UART */
1306  #define UCC_UART_UPSMR_FLC             0x8000
1307  #define UCC_UART_UPSMR_SL              0x4000