tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * Internal header file for QE TDM mode routines.
3 *
4 * Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
5 *
6 * Authors: Zhao Qiang <qiang.zhao@nxp.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version
12 */
13
14#ifndef _QE_TDM_H_
15#define _QE_TDM_H_
16
17#include <linux/kernel.h>
18#include <linux/list.h>
19
20#include <soc/fsl/qe/immap_qe.h>
21#include <soc/fsl/qe/qe.h>
22
23#include <soc/fsl/qe/ucc.h>
24#include <soc/fsl/qe/ucc_fast.h>
25
26/* SI RAM entries */
27#define SIR_LAST 0x0001
28#define SIR_BYTE 0x0002
29#define SIR_CNT(x) ((x) << 2)
30#define SIR_CSEL(x) ((x) << 5)
31#define SIR_SGS 0x0200
32#define SIR_SWTR 0x4000
33#define SIR_MCC 0x8000
34#define SIR_IDLE 0
35
36/* SIxMR fields */
37#define SIMR_SAD(x) ((x) << 12)
38#define SIMR_SDM_NORMAL 0x0000
39#define SIMR_SDM_INTERNAL_LOOPBACK 0x0800
40#define SIMR_SDM_MASK 0x0c00
41#define SIMR_CRT 0x0040
42#define SIMR_SL 0x0020
43#define SIMR_CE 0x0010
44#define SIMR_FE 0x0008
45#define SIMR_GM 0x0004
46#define SIMR_TFSD(n) (n)
47#define SIMR_RFSD(n) ((n) << 8)
48
49enum tdm_ts_t {
50 TDM_TX_TS,
51 TDM_RX_TS
52};
53
54enum tdm_framer_t {
55 TDM_FRAMER_T1,
56 TDM_FRAMER_E1
57};
58
59enum tdm_mode_t {
60 TDM_INTERNAL_LOOPBACK,
61 TDM_NORMAL
62};
63
64struct si_mode_info {
65 u8 simr_rfsd;
66 u8 simr_tfsd;
67 u8 simr_crt;
68 u8 simr_sl;
69 u8 simr_ce;
70 u8 simr_fe;
71 u8 simr_gm;
72};
73
74struct ucc_tdm_info {
75 struct ucc_fast_info uf_info;
76 struct si_mode_info si_info;
77};
78
79struct ucc_tdm {
80 u16 tdm_port; /* port for this tdm:TDMA,TDMB */
81 u32 siram_entry_id;
82 u16 __iomem *siram;
83 struct si1 __iomem *si_regs;
84 enum tdm_framer_t tdm_framer_type;
85 enum tdm_mode_t tdm_mode;
86 u8 num_of_ts; /* the number of timeslots in this tdm frame */
87 u32 tx_ts_mask; /* tx time slot mask */
88 u32 rx_ts_mask; /* rx time slot mask */
89};
90
91int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
92 struct ucc_tdm_info *ut_info);
93void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info);
94#endif