+--- /dev/null
++++ b/drivers/misc/ucc_tdm.h
+@@ -0,0 +1,221 @@
++/*
++ * drivers/misc/ucc_tdm.h
++ *
++ * UCC Based Linux TDM Driver
++ * This driver is designed to support UCC based TDM for PowerPC processors.
++ * This driver can interface with SLIC device to run VOIP kind of
++ * applications.
++ *
++ * Author: Ashish Kalra & Poonam Aggrwal
++ *
++ * Copyright (c) 2007 Freescale Semiconductor, Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License as published by the
++ * Free Software Foundation; either version 2 of the License, or (at your
++ * option) any later version.
++ */
++
++#ifndef TDM_H
++#define TDM_H
++
++#define NUM_TS 8
++#define ACTIVE_CH 8
++
++/* SAMPLE_DEPTH is the sample depth is the number of frames before
++ * an interrupt. Must be a multiple of 4
++ */
++#define SAMPLE_DEPTH 80
++
++/* define the number of Rx interrupts to go by for initial stuttering */
++#define STUTTER_INT_CNT 1
++
++/* BMRx Field Descriptions to specify tstate and rstate in UCC parameter RAM*/
++#define EN_BUS_SNOOPING 0x20
++#define BE_BO 0x10
++
++/* UPSMR Register for Transparent UCC controller Bit definitions*/
++#define NBO 0x00000000 /* Normal Mode 1 bit of data per clock */
++
++/* SI Mode register bit definitions */
++#define NORMAL_OPERATION 0x0000
++#define AUTO_ECHO 0x0400
++#define INTERNAL_LB 0x0800
++#define CONTROL_LB 0x0c00
++#define SIMODE_CRT (0x8000 >> 9)
++#define SIMODE_SL (0x8000 >> 10)
++#define SIMODE_CE (0x8000 >> 11)
++#define SIMODE_FE (0x8000 >> 12)
++#define SIMODE_GM (0x8000 >> 13)
++#define SIMODE_TFSD(val) (val)
++#define SIMODE_RFSD(val) ((val) << 8)
++
++#define SI_TDM_MODE_REGISTER_OFFSET 0
++
++#define R_CM 0x02000000
++#define T_CM 0x02000000
++
++#define SET_RX_SI_RAM(n, val) \
++ out_be16((u16 *)&qe_immr->sir.rx[(n)*2], (u16)(val))
++
++#define SET_TX_SI_RAM(n, val) \
++ out_be16((u16 *)&qe_immr->sir.tx[(n)*2], (u16)(val))
++
++/* SI RAM entries */
++#define SIR_LAST 0x0001
++#define SIR_CNT(n) ((n) << 2)
++#define SIR_BYTE 0x0002
++#define SIR_BIT 0x0000
++#define SIR_IDLE 0
++#define SIR_UCC(uccx) (((uccx+9)) << 5)
++
++/* BRGC Register Bit definitions */
++#define BRGC_RESET (0x1<<17)
++#define BRGC_EN (0x1<<16)
++#define BRGC_EXTC_QE (0x00<<14)
++#define BRGC_EXTC_CLK3 (0x01<<14)
++#define BRGC_EXTC_CLK5 (0x01<<15)
++#define BRGC_EXTC_CLK9 (0x01<<14)
++#define BRGC_EXTC_CLK11 (0x01<<14)
++#define BRGC_EXTC_CLK13 (0x01<<14)
++#define BRGC_EXTC_CLK15 (0x01<<15)
++#define BRGC_ATB (0x1<<13)
++#define BRGC_DIV16 (0x1)
++
++/* structure representing UCC transparent parameter RAM */
++struct ucc_transparent_pram {
++ __be16 riptr;
++ __be16 tiptr;
++ __be16 res0;
++ __be16 mrblr;
++ __be32 rstate;
++ __be32 rbase;
++ __be16 rbdstat;
++ __be16 rbdlen;
++ __be32 rdptr;
++ __be32 tstate;
++ __be32 tbase;
++ __be16 tbdstat;
++ __be16 tbdlen;
++ __be32 tdptr;
++ __be32 rbptr;
++ __be32 tbptr;
++ __be32 rcrc;
++ __be32 res1;
++ __be32 tcrc;
++ __be32 res2;
++ __be32 res3;
++ __be32 c_mask;
++ __be32 c_pres;
++ __be16 disfc;
++ __be16 crcec;
++ __be32 res4[4];
++ __be16 ts_tmp;
++ __be16 tmp_mb;
++};
++
++#define UCC_TRANSPARENT_PRAM_SIZE 0x100
++
++struct tdm_cfg {
++ u8 com_pin; /* Common receive and transmit pins
++ * 0 = separate pins
++ * 1 = common pins
++ */
++
++ u8 fr_sync_level; /* SLx bit Frame Sync Polarity
++ * 0 = L1R/TSYNC active logic "1"
++ * 1 = L1R/TSYNC active logic "0"
++ */
++
++ u8 clk_edge; /* CEx bit Tx Rx Clock Edge
++ * 0 = TX data on rising edge of clock
++ * RX data on falling edge
++ * 1 = TX data on falling edge of clock
++ * RX data on rising edge
++ */
++
++ u8 fr_sync_edge; /* FEx bit Frame sync edge
++ * Determine when the sync pulses are sampled
++ * 0 = Falling edge
++ * 1 = Rising edge
++ */
++
++ u8 rx_fr_sync_delay; /* TFSDx/RFSDx bits Frame Sync Delay
++ * 00 = no bit delay
++ * 01 = 1 bit delay
++ * 10 = 2 bit delay
++ * 11 = 3 bit delay
++ */
++
++ u8 tx_fr_sync_delay; /* TFSDx/RFSDx bits Frame Sync Delay
++ * 00 = no bit delay
++ * 01 = 1 bit delay
++ * 10 = 2 bit delay
++ * 11 = 3 bit delay
++ */
++
++ u8 active_num_ts; /* Number of active time slots in TDM
++ * assume same active Rx/Tx time slots
++ */
++};
++
++struct ucc_tdm_info {
++ struct ucc_fast_info uf_info;
++ u32 ucc_busy;
++};
++
++struct tdm_ctrl {
++ u32 device_busy;
++ struct device *device;
++ struct ucc_fast_private *uf_private;
++ struct ucc_tdm_info *ut_info;
++ u32 tdm_port; /* port for this tdm:TDMA,TDMB,TDMC,TDMD */
++ u32 si; /* serial interface: 0 or 1 */
++ struct ucc_fast __iomem *uf_regs; /* UCC Fast registers */
++ u16 rx_mask[8]; /* Active Receive channels LSB is ch0 */
++ u16 tx_mask[8]; /* Active Transmit channels LSB is ch0 */
++ /* Only channels less than the number of FRAME_SIZE are implemented */
++ struct tdm_cfg cfg_ctrl; /* Signaling controls configuration */
++ u8 *tdm_input_data; /* buffer used for Rx by the tdm */
++ u8 *tdm_output_data; /* buffer used for Tx by the tdm */
++
++ dma_addr_t dma_input_addr; /* dma mapped buffer for TDM Rx */
++ dma_addr_t dma_output_addr; /* dma mapped buffer for TDM Tx */
++ u16 physical_num_ts; /* physical number of timeslots in the tdm
++ frame */
++ u32 phase_rx; /* cycles through 0, 1, 2 */
++ u32 phase_tx; /* cycles through 0, 1, 2 */
++ /*
++ * the following two variables are for dealing with "stutter" problem
++ * "stutter" period is about 20 frames or so, varies depending active
++ * channel num depending on the sample depth, the code should let a
++ * few Rx interrupts go by
++ */
++ u32 tdm_icnt;
++ u32 tdm_flag;
++ struct ucc_transparent_pram __iomem *ucc_pram;
++ struct qe_bd __iomem *tx_bd;
++ struct qe_bd __iomem *rx_bd;
++ u32 ucc_pram_offset;
++ u32 tx_bd_offset;
++ u32 rx_bd_offset;
++ u32 rx_ucode_buf_offset;
++ u32 tx_ucode_buf_offset;
++ bool leg_slic;
++ wait_queue_head_t wakeup_event;
++};
++
++struct tdm_client {
++ u32 client_id;
++ void (*tdm_read)(u32 client_id, short chn_id,
++ short *pcm_buffer, short len);
++ void (*tdm_write)(u32 client_id, short chn_id,
++ short *pcm_buffer, short len);
++ wait_queue_head_t *wakeup_event;
++ };
++
++#define MAX_PHASE 1
++#define NR_BUFS 2
++#define EFF_ACTIVE_CH ACTIVE_CH / 2
++
++#endif
+--- /dev/null
++++ b/drivers/misc/ucc_tdm.c
+@@ -0,0 +1,1017 @@
++/*
++ * drivers/misc/ucc_tdm.c
++ *
++ * UCC Based Linux TDM Driver
++ * This driver is designed to support UCC based TDM for PowerPC processors.
++ * This driver can interface with SLIC device to run VOIP kind of
++ * applications.
++ *
++ * Author: Ashish Kalra & Poonam Aggrwal
++ *
++ * Copyright (c) 2007 Freescale Semiconductor, Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License as published by the
++ * Free Software Foundation; either version 2 of the License, or (at your
++ * option) any later version.
++ */
++
++#include <generated/autoconf.h>
++#include <linux/module.h>
++#include <linux/sched.h>
++#include <linux/kernel.h>
++#include <linux/slab.h>
++#include <linux/errno.h>
++#include <linux/types.h>
++#include <linux/interrupt.h>
++#include <linux/time.h>
++#include <linux/skbuff.h>
++#include <linux/proc_fs.h>
++#include <linux/delay.h>
++#include <linux/dma-mapping.h>
++#include <linux/string.h>
++#include <linux/irq.h>
++#include <linux/of_platform.h>
++#include <linux/io.h>
++#include <linux/wait.h>
++#include <linux/timer.h>
++
++#include <asm/immap_qe.h>
++#include <asm/qe.h>
++#include <asm/ucc.h>
++#include <asm/ucc_fast.h>
++#include <asm/ucc_slow.h>
++
++#include "ucc_tdm.h"
++#define DRV_DESC "Freescale QE UCC TDM Driver"
++#define DRV_NAME "ucc_tdm"
++
++
++/*
++ * define the following #define if snooping or hardware-based cache coherency
++ * is disabled on the UCC transparent controller.This flag enables
++ * software-based cache-coherency support by explicitly flushing data cache
++ * contents after setting up the TDM output buffer(s) and invalidating the
++ * data cache contents before the TDM input buffer(s) are read.
++ */
++#undef UCC_CACHE_SNOOPING_DISABLED
++
++#define MAX_NUM_TDM_DEVICES 8
++
++static struct tdm_ctrl *tdm_ctrl[MAX_NUM_TDM_DEVICES];
++
++static int num_tdm_devices;
++static int num_tdm_clients;
++
++static struct ucc_tdm_info utdm_primary_info = {
++ .uf_info = {
++ .tsa = 1,
++ .cdp = 1,
++ .cds = 1,
++ .ctsp = 1,
++ .ctss = 1,
++ .revd = 1,
++ .urfs = 0x128,
++ .utfs = 0x128,
++ .utfet = 0,
++ .utftt = 0x128,
++ .ufpt = 256,
++ .ttx_trx = UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_TRANSPARENT,
++ .tenc = UCC_FAST_TX_ENCODING_NRZ,
++ .renc = UCC_FAST_RX_ENCODING_NRZ,
++ .tcrc = UCC_FAST_16_BIT_CRC,
++ .synl = UCC_FAST_SYNC_LEN_NOT_USED,
++ },
++ .ucc_busy = 0,
++};
++
++static struct ucc_tdm_info utdm_info[8];
++
++static void dump_siram(struct tdm_ctrl *tdm_c)
++{
++#ifdef DEBUG
++ int i;
++ u16 phy_num_ts;
++
++ phy_num_ts = tdm_c->physical_num_ts;
++
++ pr_debug("SI TxRAM dump\n");
++ /* each slot entry in SI RAM is of 2 bytes */
++ for (i = 0; i < phy_num_ts * 2; i++)
++ pr_debug("%x ", in_8(&qe_immr->sir.tx[i]));
++ pr_debug("\nSI RxRAM dump\n");
++ for (i = 0; i < phy_num_ts * 2; i++)
++ pr_debug("%x ", in_8(&qe_immr->sir.rx[i]));
++ pr_debug("\n");
++#endif
++}
++
++static void dump_ucc(struct tdm_ctrl *tdm_c)
++{
++#ifdef DEBUG
++ struct ucc_transparent_pram *ucc_pram;
++
++ ucc_pram = tdm_c->ucc_pram;
++
++ pr_debug("%s Dumping UCC Registers\n", __FUNCTION__);
++ ucc_fast_dump_regs(tdm_c->uf_private);
++ pr_debug("%s Dumping UCC Parameter RAM\n", __FUNCTION__);
++ pr_debug("rbase = 0x%x\n", in_be32(&ucc_pram->rbase));
++ pr_debug("rbptr = 0x%x\n", in_be32(&ucc_pram->rbptr));
++ pr_debug("mrblr = 0x%x\n", in_be16(&ucc_pram->mrblr));
++ pr_debug("rbdlen = 0x%x\n", in_be16(&ucc_pram->rbdlen));
++ pr_debug("rbdstat = 0x%x\n", in_be16(&ucc_pram->rbdstat));
++ pr_debug("rstate = 0x%x\n", in_be32(&ucc_pram->rstate));
++ pr_debug("rdptr = 0x%x\n", in_be32(&ucc_pram->rdptr));
++ pr_debug("tbase = 0x%x\n", in_be32(&ucc_pram->tbase));
++ pr_debug("tbptr = 0x%x\n", in_be32(&ucc_pram->tbptr));
++ pr_debug("tbdlen = 0x%x\n", in_be16(&ucc_pram->tbdlen));
++ pr_debug("tbdstat = 0x%x\n", in_be16(&ucc_pram->tbdstat));
++ pr_debug("tstate = 0x%x\n", in_be32(&ucc_pram->tstate));
++ pr_debug("tdptr = 0x%x\n", in_be32(&ucc_pram->tdptr));
++#endif
++}
++
++/*
++ * For use when a framing bit is not present
++ * Program current-route SI ram
++ * Set SIxRAM TDMx
++ * Entries must be in units of 8.
++ * SIR_UCC -> Channel Select
++ * SIR_CNT -> Number of bits or bytes
++ * SIR_BYTE -> Byte or Bit resolution
++ * SIR_LAST -> Indicates last entry in SIxRAM
++ * SIR_IDLE -> The Tx data pin is Tri-stated and the Rx data pin is
++ * ignored
++ */
++static void set_siram(struct tdm_ctrl *tdm_c, enum comm_dir dir)
++{
++ const u16 *mask;
++ u16 temp_mask = 1;
++ u16 siram_code = 0;
++ u32 i, j, k;
++ u32 ucc;
++ u32 phy_num_ts;
++
++ phy_num_ts = tdm_c->physical_num_ts;
++ ucc = tdm_c->ut_info->uf_info.ucc_num;
++
++ if (dir == COMM_DIR_RX)
++ mask = tdm_c->rx_mask;
++ else
++ mask = tdm_c->tx_mask;
++ k = 0;
++ j = 0;
++ for (i = 0; i < phy_num_ts; i++) {
++ if ((mask[k] & temp_mask) == temp_mask)
++ siram_code = SIR_UCC(ucc) | SIR_CNT(0) | SIR_BYTE;
++ else
++ siram_code = SIR_IDLE | SIR_CNT(0) | SIR_BYTE;
++ if (dir == COMM_DIR_RX)
++ out_be16((u16 *)&qe_immr->sir.rx[i * 2], siram_code);
++ else
++ out_be16((u16 *)&qe_immr->sir.tx[i * 2], siram_code);
++ temp_mask = temp_mask << 1;
++ j++;
++ if (j >= 16) {
++ j = 0;
++ temp_mask = 0x0001;
++ k++;
++ }
++ }
++ siram_code = siram_code | SIR_LAST;
++
++ if (dir == COMM_DIR_RX)
++ out_be16((u16 *)&qe_immr->sir.rx[(phy_num_ts - 1) * 2],
++ siram_code);
++ else
++ out_be16((u16 *)&qe_immr->sir.tx[(phy_num_ts - 1) * 2],
++ siram_code);
++}
++
++static void config_si(struct tdm_ctrl *tdm_c)
++{
++ u8 rxsyncdelay, txsyncdelay, tdm_port;
++ u16 sixmr_val = 0;
++ u32 tdma_mode_off;
++ u16 *si1_tdm_mode_reg;
++
++ tdm_port = tdm_c->tdm_port;
++
++ set_siram(tdm_c, COMM_DIR_RX);
++
++ set_siram(tdm_c, COMM_DIR_TX);
++
++ rxsyncdelay = tdm_c->cfg_ctrl.rx_fr_sync_delay;
++ txsyncdelay = tdm_c->cfg_ctrl.tx_fr_sync_delay;
++ if (tdm_c->cfg_ctrl.com_pin)
++ sixmr_val |= SIMODE_CRT;
++ if (tdm_c->cfg_ctrl.fr_sync_level == 1)
++ sixmr_val |= SIMODE_SL;
++ if (tdm_c->cfg_ctrl.clk_edge == 1)
++ sixmr_val |= SIMODE_CE;
++ if (tdm_c->cfg_ctrl.fr_sync_edge == 1)
++ sixmr_val |= SIMODE_FE;
++ sixmr_val |= (SIMODE_TFSD(txsyncdelay) | SIMODE_RFSD(rxsyncdelay));
++
++ tdma_mode_off = SI_TDM_MODE_REGISTER_OFFSET * tdm_c->tdm_port;
++
++ si1_tdm_mode_reg = (u8 *)&qe_immr->si1 + tdma_mode_off;
++ out_be16(si1_tdm_mode_reg, sixmr_val);
++
++ dump_siram(tdm_c);
++}
++
++static int tdm_init(struct tdm_ctrl *tdm_c)
++{
++ u32 tdm_port, ucc, act_num_ts;
++ int ret, i, err;
++ u32 cecr_subblock;
++ u32 pram_offset;
++ u32 rxbdt_offset;
++ u32 txbdt_offset;
++ u32 rx_ucode_buf_offset, tx_ucode_buf_offset;
++ u16 bd_status, bd_len;
++ enum qe_clock clock;
++ struct qe_bd __iomem *rx_bd, *tx_bd;
++
++ tdm_port = tdm_c->tdm_port;
++ ucc = tdm_c->ut_info->uf_info.ucc_num;
++ act_num_ts = tdm_c->cfg_ctrl.active_num_ts;
++
++ /*
++ * TDM Tx and Rx CLKs = 2048 KHz.
++ */
++ if (strstr(tdm_c->ut_info->uf_info.tdm_tx_clk, "BRG")) {
++ clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_tx_clk);
++ err = qe_setbrg(clock, 2048000, 1);
++ if (err < 0) {
++ printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
++ tdm_c->ut_info->uf_info.tdm_tx_clk);
++ return err;
++ }
++ }
++ if (strstr(tdm_c->ut_info->uf_info.tdm_rx_clk, "BRG")) {
++ clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_rx_clk);
++ err = qe_setbrg(clock, 2048000, 1);
++ if (err < 0) {
++ printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
++ tdm_c->ut_info->uf_info.tdm_rx_clk);
++ return err;
++ }
++ }
++ /*
++ * TDM FSyncs = 4 KHz.
++ */
++ if (strstr(tdm_c->ut_info->uf_info.tdm_tx_sync, "BRG")) {
++ clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_tx_sync);
++ err = qe_setbrg(clock, 4000, 1);
++ if (err < 0) {
++ printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
++ tdm_c->ut_info->uf_info.tdm_tx_sync);
++ return err;
++ }
++ }
++ if (strstr(tdm_c->ut_info->uf_info.tdm_rx_sync, "BRG")) {
++ clock = qe_clock_source(tdm_c->ut_info->uf_info.tdm_rx_sync);
++ err = qe_setbrg(clock, 4000, 1);
++ if (err < 0) {
++ printk(KERN_ERR "%s: Failed to set %s\n", __FUNCTION__,
++ tdm_c->ut_info->uf_info.tdm_rx_sync);
++ return err;
++ }
++ }
++
++ tdm_c->ut_info->uf_info.uccm_mask = (u32)
++ ((UCC_TRANS_UCCE_RXB | UCC_TRANS_UCCE_BSY) << 16);
++
++ if (ucc_fast_init(&(tdm_c->ut_info->uf_info), &tdm_c->uf_private)) {
++ printk(KERN_ERR "%s: Failed to init uccf\n", __FUNCTION__);
++ return -ENOMEM;
++ }
++
++ ucc_fast_disable(tdm_c->uf_private, COMM_DIR_RX | COMM_DIR_TX);
++
++ /* Write to QE CECR, UCCx channel to Stop Transmission */
++ cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
++ qe_issue_cmd(QE_STOP_TX, cecr_subblock,
++ (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
++
++ pram_offset = qe_muram_alloc(UCC_TRANSPARENT_PRAM_SIZE,
++ ALIGNMENT_OF_UCC_SLOW_PRAM);
++ if (IS_ERR_VALUE(pram_offset)) {
++ printk(KERN_ERR "%s: Cannot allocate MURAM memory for"
++ " transparent UCC\n", __FUNCTION__);
++ ret = -ENOMEM;
++ goto pram_alloc_error;
++ }
++
++ cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
++ qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, cecr_subblock,
++ QE_CR_PROTOCOL_UNSPECIFIED, pram_offset);
++
++ tdm_c->ucc_pram = qe_muram_addr(pram_offset);
++ tdm_c->ucc_pram_offset = pram_offset;
++
++ /*
++ * zero-out pram, this will also ensure RSTATE, TSTATE are cleared, also
++ * DISFC & CRCEC counters will be initialized.
++ */
++ memset(tdm_c->ucc_pram, 0, sizeof(struct ucc_transparent_pram));
++
++ /* rbase, tbase alignment is 8. */
++ rxbdt_offset = qe_muram_alloc(NR_BUFS * sizeof(struct qe_bd),
++ QE_ALIGNMENT_OF_BD);
++ if (IS_ERR_VALUE(rxbdt_offset)) {
++ printk(KERN_ERR "%s: Cannot allocate MURAM memory for RxBDs\n",
++ __FUNCTION__);
++ ret = -ENOMEM;
++ goto rxbd_alloc_error;
++ }
++ txbdt_offset = qe_muram_alloc(NR_BUFS * sizeof(struct qe_bd),
++ QE_ALIGNMENT_OF_BD);
++ if (IS_ERR_VALUE(txbdt_offset)) {
++ printk(KERN_ERR "%s: Cannot allocate MURAM memory for TxBDs\n",
++ __FUNCTION__);
++ ret = -ENOMEM;
++ goto txbd_alloc_error;
++ }
++ tdm_c->tx_bd = qe_muram_addr(txbdt_offset);
++ tdm_c->rx_bd = qe_muram_addr(rxbdt_offset);
++
++ tdm_c->tx_bd_offset = txbdt_offset;
++ tdm_c->rx_bd_offset = rxbdt_offset;
++
++ rx_bd = tdm_c->rx_bd;
++ tx_bd = tdm_c->tx_bd;
++
++ out_be32(&tdm_c->ucc_pram->rbase, (u32) immrbar_virt_to_phys(rx_bd));
++ out_be32(&tdm_c->ucc_pram->tbase, (u32) immrbar_virt_to_phys(tx_bd));
++
++ for (i = 0; i < NR_BUFS - 1; i++) {
++ bd_status = (u16) ((R_E | R_CM | R_I) >> 16);
++ bd_len = 0;
++ out_be16(&rx_bd->length, bd_len);
++ out_be16(&rx_bd->status, bd_status);
++ out_be32(&rx_bd->buf,
++ tdm_c->dma_input_addr + i * SAMPLE_DEPTH * act_num_ts);
++ rx_bd += 1;
++
++ bd_status = (u16) ((T_R | T_CM) >> 16);
++ bd_len = SAMPLE_DEPTH * act_num_ts;
++ out_be16(&tx_bd->length, bd_len);
++ out_be16(&tx_bd->status, bd_status);
++ out_be32(&tx_bd->buf,
++ tdm_c->dma_output_addr + i * SAMPLE_DEPTH * act_num_ts);
++ tx_bd += 1;
++ }
++
++ bd_status = (u16) ((R_E | R_CM | R_I | R_W) >> 16);
++ bd_len = 0;
++ out_be16(&rx_bd->length, bd_len);
++ out_be16(&rx_bd->status, bd_status);
++ out_be32(&rx_bd->buf,
++ tdm_c->dma_input_addr + i * SAMPLE_DEPTH * act_num_ts);
++
++ bd_status = (u16) ((T_R | T_CM | T_W) >> 16);
++ bd_len = SAMPLE_DEPTH * act_num_ts;
++ out_be16(&tx_bd->length, bd_len);
++ out_be16(&tx_bd->status, bd_status);
++ out_be32(&tx_bd->buf,
++ tdm_c->dma_output_addr + i * SAMPLE_DEPTH * act_num_ts);
++
++ config_si(tdm_c);
++
++ setbits32(&qe_immr->ic.qimr, (0x80000000UL >> ucc));
++
++ rx_ucode_buf_offset = qe_muram_alloc(32, 32);
++ if (IS_ERR_VALUE(rx_ucode_buf_offset)) {
++ printk(KERN_ERR "%s: Cannot allocate MURAM mem for Rx"
++ " ucode buf\n", __FUNCTION__);
++ ret = -ENOMEM;
++ goto rxucode_buf_alloc_error;
++ }
++
++ tx_ucode_buf_offset = qe_muram_alloc(32, 32);
++ if (IS_ERR_VALUE(tx_ucode_buf_offset)) {
++ printk(KERN_ERR "%s: Cannot allocate MURAM mem for Tx"
++ " ucode buf\n", __FUNCTION__);
++ ret = -ENOMEM;
++ goto txucode_buf_alloc_error;
++ }
++ out_be16(&tdm_c->ucc_pram->riptr, (u16) rx_ucode_buf_offset);
++ out_be16(&tdm_c->ucc_pram->tiptr, (u16) tx_ucode_buf_offset);
++
++ tdm_c->rx_ucode_buf_offset = rx_ucode_buf_offset;
++ tdm_c->tx_ucode_buf_offset = tx_ucode_buf_offset;
++
++ /*
++ * set the receive buffer descriptor maximum size to be
++ * SAMPLE_DEPTH * number of active RX channels
++ */
++ out_be16(&tdm_c->ucc_pram->mrblr, (u16) SAMPLE_DEPTH * act_num_ts);
++
++ /*
++ * enable snooping and BE byte ordering on the UCC pram's
++ * tstate & rstate registers.
++ */
++ out_be32(&tdm_c->ucc_pram->tstate, 0x30000000UL);
++ out_be32(&tdm_c->ucc_pram->rstate, 0x30000000UL);
++
++ /*Put UCC transparent controller into serial interface mode. */
++ out_be32(&tdm_c->uf_regs->upsmr, 0);
++
++ /* Reset TX and RX for UCCx */
++ cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
++ qe_issue_cmd(QE_INIT_TX_RX, cecr_subblock,
++ (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
++
++ return 0;
++
++txucode_buf_alloc_error:
++ qe_muram_free(rx_ucode_buf_offset);
++rxucode_buf_alloc_error:
++ qe_muram_free(txbdt_offset);
++txbd_alloc_error:
++ qe_muram_free(rxbdt_offset);
++rxbd_alloc_error:
++ qe_muram_free(pram_offset);
++pram_alloc_error:
++ ucc_fast_free(tdm_c->uf_private);
++ return ret;
++}
++
++static void tdm_deinit(struct tdm_ctrl *tdm_c)
++{
++ qe_muram_free(tdm_c->rx_ucode_buf_offset);
++ qe_muram_free(tdm_c->tx_ucode_buf_offset);
++
++ if (tdm_c->rx_bd_offset) {
++ qe_muram_free(tdm_c->rx_bd_offset);
++ tdm_c->rx_bd = NULL;
++ tdm_c->rx_bd_offset = 0;
++ }
++ if (tdm_c->tx_bd_offset) {
++ qe_muram_free(tdm_c->tx_bd_offset);
++ tdm_c->tx_bd = NULL;
++ tdm_c->tx_bd_offset = 0;
++ }
++ if (tdm_c->ucc_pram_offset) {
++ qe_muram_free(tdm_c->ucc_pram_offset);
++ tdm_c->ucc_pram = NULL;
++ tdm_c->ucc_pram_offset = 0;
++ }
++}
++
++
++static irqreturn_t tdm_isr(int irq, void *dev_id)
++{
++ u8 *input_tdm_buffer, *output_tdm_buffer;
++ u32 txb, rxb;
++ u32 ucc;
++ register u32 ucce = 0;
++ struct tdm_ctrl *tdm_c;
++ tdm_c = (struct tdm_ctrl *)dev_id;
++
++ tdm_c->tdm_icnt++;
++ ucc = tdm_c->ut_info->uf_info.ucc_num;
++ input_tdm_buffer = tdm_c->tdm_input_data;
++ output_tdm_buffer = tdm_c->tdm_output_data;
++
++ if (in_be32(tdm_c->uf_private->p_ucce) &
++ (UCC_TRANS_UCCE_BSY << 16)) {
++ out_be32(tdm_c->uf_private->p_ucce,
++ (UCC_TRANS_UCCE_BSY << 16));
++ pr_info("%s: From tdm isr busy interrupt\n",
++ __FUNCTION__);
++ dump_ucc(tdm_c);
++
++ return IRQ_HANDLED;
++ }
++
++ if (tdm_c->tdm_flag == 1) {
++ /* track phases for Rx/Tx */
++ tdm_c->phase_rx += 1;
++ if (tdm_c->phase_rx == MAX_PHASE)
++ tdm_c->phase_rx = 0;
++
++ tdm_c->phase_tx += 1;
++ if (tdm_c->phase_tx == MAX_PHASE)
++ tdm_c->phase_tx = 0;
++
++#ifdef CONFIG_TDM_HW_LB_TSA_SLIC
++ {
++ u32 temp_rx, temp_tx, phase_tx, phase_rx;
++ int i;
++ phase_rx = tdm_c->phase_rx;
++ phase_tx = tdm_c->phase_tx;
++ if (phase_rx == 0)
++ phase_rx = MAX_PHASE;
++ else
++ phase_rx -= 1;
++ if (phase_tx == 0)
++ phase_tx = MAX_PHASE;
++ else
++ phase_tx -= 1;
++ temp_rx = phase_rx * SAMPLE_DEPTH * ACTIVE_CH;
++ temp_tx = phase_tx * SAMPLE_DEPTH * ACTIVE_CH;
++
++ /*check if loopback received data on TS0 is correct. */
++ pr_debug("%s: check if loopback received data on TS0"
++ " is correct\n", __FUNCTION__);
++ pr_debug("%d,%d ", phase_rx, phase_tx);
++ for (i = 0; i < 8; i++)
++ pr_debug("%1d,%1d ",
++ input_tdm_buffer[temp_rx + i],
++ output_tdm_buffer[temp_tx + i]);
++ pr_debug("\n");
++ }
++#endif
++
++ /* schedule BH */
++ wake_up_interruptible(&tdm_c->wakeup_event);
++ } else {
++ if (tdm_c->tdm_icnt == STUTTER_INT_CNT) {
++ txb = in_be32(&tdm_c->ucc_pram->tbptr) -
++ in_be32(&tdm_c->ucc_pram->tbase);
++ rxb = in_be32(&tdm_c->ucc_pram->rbptr) -
++ in_be32(&tdm_c->ucc_pram->rbase);
++ tdm_c->phase_tx = txb / sizeof(struct qe_bd);
++ tdm_c->phase_rx = rxb / sizeof(struct qe_bd);
++
++#ifdef CONFIG_TDM_HW_LB_TSA_SLIC
++ tdm_c->phase_tx = tdm_c->phase_rx;
++#endif
++
++ /* signal "stuttering" period is over */
++ tdm_c->tdm_flag = 1;
++
++ pr_debug("%s: stuttering period is over\n",
++ __FUNCTION__);
++
++ if (in_be32(tdm_c->uf_private->p_ucce) &
++ (UCC_TRANS_UCCE_TXE << 16)) {
++ u32 cecr_subblock;
++ out_be32(tdm_c->uf_private->p_ucce,
++ (UCC_TRANS_UCCE_TXE << 16));
++ pr_debug("%s: From tdm isr txe interrupt\n",
++ __FUNCTION__);
++
++ cecr_subblock =
++ ucc_fast_get_qe_cr_subblock(ucc);
++ qe_issue_cmd(QE_RESTART_TX, cecr_subblock,
++ (u8) QE_CR_PROTOCOL_UNSPECIFIED,
++ 0);
++ }
++ }
++ }
++
++ ucce = (in_be32(tdm_c->uf_private->p_ucce)
++ & in_be32(tdm_c->uf_private->p_uccm));
++
++ out_be32(tdm_c->uf_private->p_ucce, ucce);
++
++ return IRQ_HANDLED;
++}
++
++static int tdm_start(struct tdm_ctrl *tdm_c)
++{
++ if (request_irq(tdm_c->ut_info->uf_info.irq, tdm_isr,
++ 0, "tdm", tdm_c)) {
++ printk(KERN_ERR "%s: request_irq for tdm_isr failed\n",
++ __FUNCTION__);
++ return -ENODEV;
++ }
++
++ ucc_fast_enable(tdm_c->uf_private, COMM_DIR_RX | COMM_DIR_TX);
++
++ pr_info("%s 16-bit linear pcm mode active with"
++ " slots 0 & 2\n", __FUNCTION__);
++
++ dump_siram(tdm_c);
++ dump_ucc(tdm_c);
++
++ setbits8(&(qe_immr->si1.siglmr1_h), (0x1 << tdm_c->tdm_port));
++ pr_info("%s UCC based TDM enabled\n", __FUNCTION__);
++
++ return 0;
++}
++
++static void tdm_stop(struct tdm_ctrl *tdm_c)
++{
++ u32 port, si;
++ u32 ucc;
++ u32 cecr_subblock;
++
++ port = tdm_c->tdm_port;
++ si = tdm_c->si;
++ ucc = tdm_c->ut_info->uf_info.ucc_num;
++ cecr_subblock = ucc_fast_get_qe_cr_subblock(ucc);
++
++ qe_issue_cmd(QE_GRACEFUL_STOP_TX, cecr_subblock,
++ (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
++ qe_issue_cmd(QE_CLOSE_RX_BD, cecr_subblock,
++ (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
++
++ clrbits8(&qe_immr->si1.siglmr1_h, (0x1 << port));
++ ucc_fast_disable(tdm_c->uf_private, COMM_DIR_RX);
++ ucc_fast_disable(tdm_c->uf_private, COMM_DIR_TX);
++ free_irq(tdm_c->ut_info->uf_info.irq, tdm_c);
++}
++
++
++static void config_tdm(struct tdm_ctrl *tdm_c)
++{
++ u32 i, j, k;
++
++ j = 0;
++ k = 0;
++
++ /* Set Mask Bits */
++ for (i = 0; i < ACTIVE_CH; i++) {
++ tdm_c->tx_mask[k] |= (1 << j);
++ tdm_c->rx_mask[k] |= (1 << j);
++ j++;
++ if (j >= 16) {
++ j = 0;
++ k++;
++ }
++ }
++ /* physical number of slots in a frame */
++ tdm_c->physical_num_ts = NUM_TS;
++
++ /* common receive and transmit pins */
++ tdm_c->cfg_ctrl.com_pin = 1;
++
++ /* L1R/TSYNC active logic "1" */
++ tdm_c->cfg_ctrl.fr_sync_level = 0;
++
++ /*
++ * TX data on rising edge of clock
++ * RX data on falling edge
++ */
++ tdm_c->cfg_ctrl.clk_edge = 0;
++
++ /* Frame sync sampled on falling edge */
++ tdm_c->cfg_ctrl.fr_sync_edge = 0;
++
++ /* no bit delay */
++ tdm_c->cfg_ctrl.rx_fr_sync_delay = 0;
++
++ /* no bit delay */
++ tdm_c->cfg_ctrl.tx_fr_sync_delay = 0;
++
++#ifndef CONFIG_TDM_HW_LB_TSA_SLIC
++ if (tdm_c->leg_slic) {
++ /* Need 1 bit delay for Legrity SLIC */
++ tdm_c->cfg_ctrl.rx_fr_sync_delay = 1;
++ tdm_c->cfg_ctrl.tx_fr_sync_delay = 1;
++ pr_info("%s Delay for Legerity!\n", __FUNCTION__);
++ }
++#endif
++
++ tdm_c->cfg_ctrl.active_num_ts = ACTIVE_CH;
++}
++
++static void tdm_read(u32 client_id, short chn_id, short *pcm_buffer,
++ short len)
++{
++ int i;
++ u32 phase_rx;
++ /* point to where to start for the current phase data processing */
++ u32 temp_rx;
++
++ struct tdm_ctrl *tdm_c = tdm_ctrl[client_id];
++
++ u16 *input_tdm_buffer =
++ (u16 *)tdm_c->tdm_input_data;
++
++ phase_rx = tdm_c->phase_rx;
++ if (phase_rx == 0)
++ phase_rx = MAX_PHASE;
++ else
++ phase_rx -= 1;
++
++ temp_rx = phase_rx * SAMPLE_DEPTH * EFF_ACTIVE_CH;
++
++#ifdef UCC_CACHE_SNOOPING_DISABLED
++ flush_dcache_range((size_t) &input_tdm_buffer[temp_rx],
++ (size_t) &input_tdm_buffer[temp_rx +
++ SAMPLE_DEPTH * ACTIVE_CH]);
++#endif
++ for (i = 0; i < len; i++)
++ pcm_buffer[i] =
++ input_tdm_buffer[i * EFF_ACTIVE_CH + temp_rx + chn_id];
++
++}
++
++static void tdm_write(u32 client_id, short chn_id, short *pcm_buffer,
++ short len)
++{
++ int i;
++ int phase_tx;
++ u32 txb;
++ /* point to where to start for the current phase data processing */
++ int temp_tx;
++ struct tdm_ctrl *tdm_c = tdm_ctrl[client_id];
++
++ u16 *output_tdm_buffer;
++ output_tdm_buffer = (u16 *)tdm_c->tdm_output_data;
++ txb = in_be32(&tdm_c->ucc_pram->tbptr) -
++ in_be32(&tdm_c->ucc_pram->tbase);
++ phase_tx = txb / sizeof(struct qe_bd);
++
++ if (phase_tx == 0)
++ phase_tx = MAX_PHASE;
++ else
++ phase_tx -= 1;
++
++ temp_tx = phase_tx * SAMPLE_DEPTH * EFF_ACTIVE_CH;
++
++ for (i = 0; i < len; i++)
++ output_tdm_buffer[i * EFF_ACTIVE_CH + temp_tx + chn_id] =
++ pcm_buffer[i];
++
++#ifdef UCC_CACHE_SNOOPING_DISABLED
++ flush_dcache_range((size_t) &output_tdm_buffer[temp_tx],
++ (size_t) &output_tdm_buffer[temp_tx + SAMPLE_DEPTH *
++ ACTIVE_CH]);
++#endif
++}
++
++
++static int tdm_register_client(struct tdm_client *tdm_client)
++{
++ u32 i;
++ if (num_tdm_clients == num_tdm_devices) {
++ printk(KERN_ERR "all TDM devices busy\n");
++ return -EBUSY;
++ }
++
++ for (i = 0; i < num_tdm_devices; i++) {
++ if (!tdm_ctrl[i]->device_busy) {
++ tdm_ctrl[i]->device_busy = 1;
++ break;
++ }
++ }
++ num_tdm_clients++;
++ tdm_client->client_id = i;
++ tdm_client->tdm_read = tdm_read;
++ tdm_client->tdm_write = tdm_write;
++ tdm_client->wakeup_event =
++ &(tdm_ctrl[i]->wakeup_event);
++ return 0;
++}
++EXPORT_SYMBOL_GPL(tdm_register_client);
++
++static int tdm_deregister_client(struct tdm_client *tdm_client)
++{
++ num_tdm_clients--;
++ tdm_ctrl[tdm_client->client_id]->device_busy = 0;
++ return 0;
++}
++EXPORT_SYMBOL_GPL(tdm_deregister_client);
++
++static int ucc_tdm_probe(struct of_device *ofdev,
++ const struct of_device_id *match)
++{
++ struct device_node *np = ofdev->node;
++ struct resource res;
++ const unsigned int *prop;
++ u32 ucc_num, device_num, err, ret = 0;
++ struct device_node *np_tmp;
++ dma_addr_t physaddr;
++ void *tdm_buff;
++ struct ucc_tdm_info *ut_info;
++
++ prop = of_get_property(np, "device-id", NULL);
++ if (prop == NULL) {
++ printk(KERN_ERR "ucc_tdm: device-id missing\n");
++ return -ENODEV;
++ }
++
++ ucc_num = *prop - 1;
++ if ((ucc_num < 0) || (ucc_num > 7))
++ return -ENODEV;
++
++ ut_info = &utdm_info[ucc_num];
++ if (ut_info->ucc_busy) {
++ printk(KERN_ERR "ucc_tdm: UCC in use by another TDM driver"
++ "instance\n");
++ return -EBUSY;
++ }
++ if (num_tdm_devices == MAX_NUM_TDM_DEVICES) {
++ printk(KERN_ERR "ucc_tdm: All TDM devices already"
++ " initialized\n");
++ return -ENODEV;
++ }
++
++ ut_info->ucc_busy = 1;
++ tdm_ctrl[num_tdm_devices++] =
++ kzalloc(sizeof(struct tdm_ctrl), GFP_KERNEL);
++ if (!tdm_ctrl[num_tdm_devices - 1]) {
++ printk(KERN_ERR "ucc_tdm: no memory to allocate for"
++ " tdm control structure\n");
++ num_tdm_devices--;
++ return -ENOMEM;
++ }
++ device_num = num_tdm_devices - 1;
++
++ tdm_ctrl[device_num]->device = &ofdev->dev;
++ tdm_ctrl[device_num]->ut_info = ut_info;
++
++ tdm_ctrl[device_num]->ut_info->uf_info.ucc_num = ucc_num;
++
++ prop = of_get_property(np, "fsl,tdm-num", NULL);
++ if (prop == NULL) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++
++ tdm_ctrl[device_num]->tdm_port = *prop - 1;
++
++ if (tdm_ctrl[device_num]->tdm_port > 3) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++
++ prop = of_get_property(np, "fsl,si-num", NULL);
++ if (prop == NULL) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++
++ tdm_ctrl[device_num]->si = *prop - 1;
++
++ tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_clk =
++ of_get_property(np, "fsl,tdm-tx-clk", NULL);
++ if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_clk == NULL) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++
++ tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_clk =
++ of_get_property(np, "fsl,tdm-rx-clk", NULL);
++ if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_clk == NULL) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++
++ tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_sync =
++ of_get_property(np, "fsl,tdm-tx-sync", NULL);
++ if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_tx_sync == NULL) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++
++ tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_sync =
++ of_get_property(np, "fsl,tdm-rx-sync", NULL);
++ if (tdm_ctrl[device_num]->ut_info->uf_info.tdm_rx_sync == NULL) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++
++ tdm_ctrl[device_num]->ut_info->uf_info.irq =
++ irq_of_parse_and_map(np, 0);
++ err = of_address_to_resource(np, 0, &res);
++ if (err) {
++ ret = -EINVAL;
++ goto get_property_error;
++ }
++ tdm_ctrl[device_num]->ut_info->uf_info.regs = res.start;
++ tdm_ctrl[device_num]->uf_regs = of_iomap(np, 0);
++
++ np_tmp = NULL;
++ np_tmp = of_find_compatible_node(np_tmp, "slic", "legerity-slic");
++ if (np_tmp != NULL) {
++ tdm_ctrl[device_num]->leg_slic = 1;
++ of_node_put(np_tmp);
++ } else
++ tdm_ctrl[device_num]->leg_slic = 0;
++
++ config_tdm(tdm_ctrl[device_num]);
++
++ tdm_buff = dma_alloc_coherent(NULL, 2 * NR_BUFS * SAMPLE_DEPTH *
++ tdm_ctrl[device_num]->cfg_ctrl.active_num_ts,
++ &physaddr, GFP_KERNEL);
++ if (!tdm_buff) {
++ printk(KERN_ERR "ucc-tdm: could not allocate buffer"
++ "descriptors\n");
++ ret = -ENOMEM;
++ goto alloc_error;
++ }
++
++ tdm_ctrl[device_num]->tdm_input_data = tdm_buff;
++ tdm_ctrl[device_num]->dma_input_addr = physaddr;
++
++ tdm_ctrl[device_num]->tdm_output_data = tdm_buff + NR_BUFS *
++ SAMPLE_DEPTH * tdm_ctrl[device_num]->cfg_ctrl.active_num_ts;
++ tdm_ctrl[device_num]->dma_output_addr = physaddr + NR_BUFS *
++ SAMPLE_DEPTH * tdm_ctrl[device_num]->cfg_ctrl.active_num_ts;
++
++ init_waitqueue_head(&(tdm_ctrl[device_num]->wakeup_event));
++
++ ret = tdm_init(tdm_ctrl[device_num]);
++ if (ret != 0)
++ goto tdm_init_error;
++
++ ret = tdm_start(tdm_ctrl[device_num]);
++ if (ret != 0)
++ goto tdm_start_error;
++
++ dev_set_drvdata(&(ofdev->dev), tdm_ctrl[device_num]);
++
++ pr_info("%s UCC based tdm module installed\n", __FUNCTION__);
++ return 0;
++
++tdm_start_error:
++ tdm_deinit(tdm_ctrl[device_num]);
++tdm_init_error:
++ dma_free_coherent(NULL, 2 * NR_BUFS * SAMPLE_DEPTH *
++ tdm_ctrl[device_num]->cfg_ctrl.active_num_ts,
++ tdm_ctrl[device_num]->tdm_input_data,
++ tdm_ctrl[device_num]->dma_input_addr);
++
++alloc_error:
++ irq_dispose_mapping(tdm_ctrl[device_num]->ut_info->uf_info.irq);
++ iounmap(tdm_ctrl[device_num]->uf_regs);
++
++get_property_error:
++ num_tdm_devices--;
++ kfree(tdm_ctrl[device_num]);
++ ut_info->ucc_busy = 0;
++ return ret;
++}
++
++static int ucc_tdm_remove(struct of_device *ofdev)
++{
++ struct tdm_ctrl *tdm_c;
++ struct ucc_tdm_info *ut_info;
++ u32 ucc_num;
++
++ tdm_c = dev_get_drvdata(&(ofdev->dev));
++ dev_set_drvdata(&(ofdev->dev), NULL);
++ ucc_num = tdm_c->ut_info->uf_info.ucc_num;
++ ut_info = &utdm_info[ucc_num];
++ tdm_stop(tdm_c);
++ tdm_deinit(tdm_c);
++
++ ucc_fast_free(tdm_c->uf_private);
++
++ dma_free_coherent(NULL, 2 * NR_BUFS * SAMPLE_DEPTH *
++ tdm_c->cfg_ctrl.active_num_ts,
++ tdm_c->tdm_input_data,
++ tdm_c->dma_input_addr);
++
++ irq_dispose_mapping(tdm_c->ut_info->uf_info.irq);
++ iounmap(tdm_c->uf_regs);
++
++ num_tdm_devices--;
++ kfree(tdm_c);
++
++ ut_info->ucc_busy = 0;
++
++ pr_info("%s UCC based tdm module uninstalled\n", __FUNCTION__);
++ return 0;
++}
++
++const struct of_device_id ucc_tdm_match[] = {
++ { .type = "tdm", .compatible = "fsl,ucc-tdm", },
++ {},
++};
++
++MODULE_DEVICE_TABLE(of, ucc_tdm_match);
++
++static struct of_platform_driver ucc_tdm_driver = {
++ .name = DRV_NAME,
++ .match_table = ucc_tdm_match,
++ .probe = ucc_tdm_probe,
++ .remove = ucc_tdm_remove,
++ .driver = {
++ .name = DRV_NAME,
++ .owner = THIS_MODULE,
++ },
++};
++
++static int __init ucc_tdm_init(void)
++{
++ u32 i;
++
++ pr_info("ucc_tdm: " DRV_DESC "\n");
++ for (i = 0; i < 8; i++)
++ memcpy(&(utdm_info[i]), &utdm_primary_info,
++ sizeof(utdm_primary_info));
++
++ return of_register_platform_driver(&ucc_tdm_driver);
++}
++
++static void __exit ucc_tdm_exit(void)
++{
++ of_unregister_platform_driver(&ucc_tdm_driver);
++}
++
++module_init(ucc_tdm_init);
++module_exit(ucc_tdm_exit);
++MODULE_AUTHOR("Freescale Semiconductor, Inc");
++MODULE_DESCRIPTION(DRV_DESC);
++MODULE_LICENSE("GPL");
+--- a/drivers/misc/Makefile
++++ b/drivers/misc/Makefile
+@@ -8,6 +8,7 @@ obj-$(CONFIG_AD525X_DPOT) += ad525x_dpot
+ obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
+ obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
+ obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
++obj-$(CONFIG_UCC_TDM) += ucc_tdm.o
+ obj-$(CONFIG_ICS932S401) += ics932s401.o
+ obj-$(CONFIG_LKDTM) += lkdtm.o
+ obj-$(CONFIG_TIFM_CORE) += tifm_core.o
+--- a/drivers/misc/Kconfig
++++ b/drivers/misc/Kconfig
+@@ -164,6 +164,20 @@ config ATMEL_SSC
+
+ If unsure, say N.
+
++config UCC_TDM
++ tristate "Freescale UCC TDM Driver"
++ depends on QUICC_ENGINE && UCC_FAST
++ default n
++ help
++ The TDM driver is for UCC based TDM devices for example, TDM device on
++ MPC832x RDB. Select it to run PowerVoIP on MPC832x RDB board.
++ The TDM driver can interface with SLIC kind of devices to transmit
++ and receive TDM samples. The TDM driver receives Time Division
++ multiplexed samples(for different channels) from the SLIC device,
++ demutiplexes them and sends them to the upper layers. At the transmit
++ end the TDM drivers receives samples for different channels, it
++ multiplexes them and sends them to the SLIC device.
++
+ config ENCLOSURE_SERVICES
+ tristate "Enclosure Services"
+ default n
+--- a/arch/powerpc/include/asm/ucc_fast.h
++++ b/arch/powerpc/include/asm/ucc_fast.h
+@@ -150,6 +150,10 @@ struct ucc_fast_info {
+ enum ucc_fast_rx_decoding_method renc;
+ enum ucc_fast_transparent_tcrc tcrc;
+ enum ucc_fast_sync_len synl;
++ char *tdm_rx_clk;
++ char *tdm_tx_clk;
++ char *tdm_rx_sync;
++ char *tdm_tx_sync;
+ };
+
+ struct ucc_fast_private {
+--- a/arch/powerpc/include/asm/qe.h
++++ b/arch/powerpc/include/asm/qe.h
+@@ -669,6 +669,14 @@ struct ucc_slow_pram {
+ #define UCC_GETH_UCCE_RXF1 0x00000002
+ #define UCC_GETH_UCCE_RXF0 0x00000001
+
++/* Transparent UCC Event Register (UCCE) */
++#define UCC_TRANS_UCCE_GRA 0x0080
++#define UCC_TRANS_UCCE_TXE 0x0010
++#define UCC_TRANS_UCCE_RXF 0x0008
++#define UCC_TRANS_UCCE_BSY 0x0004
++#define UCC_TRANS_UCCE_TXB 0x0002
++#define UCC_TRANS_UCCE_RXB 0x0001
++
+ /* UCC Protocol Specific Mode Register (UPSMR), when used for UART */
+ #define UCC_UART_UPSMR_FLC 0x8000
+ #define UCC_UART_UPSMR_SL 0x4000
projects / openwrt.git / commitdiff