include/soc/fsl/qe/qe_tdm.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Internal header file for QE TDM mode routines.
   4  *
   5  * Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
   6  *
   7  * Authors:     Zhao Qiang <qiang.zhao@nxp.com>
   8  */
   9
  10 #ifndef _QE_TDM_H_
  11 #define _QE_TDM_H_
  12
  13 #include <linux/kernel.h>
  14 #include <linux/list.h>
  15
  16 #include <soc/fsl/qe/immap_qe.h>
  17 #include <soc/fsl/qe/qe.h>
  18
  19 #include <soc/fsl/qe/ucc.h>
  20 #include <soc/fsl/qe/ucc_fast.h>
  21
  22 /* SI RAM entries */
  23 #define SIR_LAST        0x0001
  24 #define SIR_BYTE        0x0002
  25 #define SIR_CNT(x)      ((x) << 2)
  26 #define SIR_CSEL(x)     ((x) << 5)
  27 #define SIR_SGS         0x0200
  28 #define SIR_SWTR        0x4000
  29 #define SIR_MCC         0x8000
  30 #define SIR_IDLE        0
  31
  32 /* SIxMR fields */
  33 #define SIMR_SAD(x) ((x) << 12)
  34 #define SIMR_SDM_NORMAL 0x0000
  35 #define SIMR_SDM_INTERNAL_LOOPBACK      0x0800
  36 #define SIMR_SDM_MASK   0x0c00
  37 #define SIMR_CRT        0x0040
  38 #define SIMR_SL         0x0020
  39 #define SIMR_CE         0x0010
  40 #define SIMR_FE         0x0008
  41 #define SIMR_GM         0x0004
  42 #define SIMR_TFSD(n)    (n)
  43 #define SIMR_RFSD(n)    ((n) << 8)
  44
  45 enum tdm_ts_t {
  46         TDM_TX_TS,
  47         TDM_RX_TS
  48 };
  49
  50 enum tdm_framer_t {
  51         TDM_FRAMER_T1,
  52         TDM_FRAMER_E1
  53 };
  54
  55 enum tdm_mode_t {
  56         TDM_INTERNAL_LOOPBACK,
  57         TDM_NORMAL
  58 };
  59
  60 struct si_mode_info {
  61         u8 simr_rfsd;
  62         u8 simr_tfsd;
  63         u8 simr_crt;
  64         u8 simr_sl;
  65         u8 simr_ce;
  66         u8 simr_fe;
  67         u8 simr_gm;
  68 };
  69
  70 struct ucc_tdm_info {
  71         struct ucc_fast_info uf_info;
  72         struct si_mode_info si_info;
  73 };
  74
  75 struct ucc_tdm {
  76         u16 tdm_port;           /* port for this tdm:TDMA,TDMB */
  77         u32 siram_entry_id;
  78         u16 __iomem *siram;
  79         struct si1 __iomem *si_regs;
  80         enum tdm_framer_t tdm_framer_type;
  81         enum tdm_mode_t tdm_mode;
  82         u8 num_of_ts;           /* the number of timeslots in this tdm frame */
  83         u32 tx_ts_mask;         /* tx time slot mask */
  84         u32 rx_ts_mask;         /* rx time slot mask */
  85 };
  86
  87 int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
  88                      struct ucc_tdm_info *ut_info);
  89 void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info);
  90 #endif