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fsl/qe: Add QE TDM lib

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QE has module to support TDM, some other protocols
supported by QE are based on TDM.
add a qe-tdm lib, this lib provides functions to the protocols
using TDM to configurate QE-TDM.

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Zhao Qiang
2016-06-06 14:30:01 +08:00
committed by David S. Miller
parent 19163ac312
commit 35ef1c20fd
5 changed files with 377 additions and 5 deletions
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5
include/soc/fsl/qe/immap_qe.h
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@@ -159,10 +159,7 @@ struct spi {
/* SI */
struct si1 {
__be16 siamr1; /* SI1 TDMA mode register */
__be16 sibmr1; /* SI1 TDMB mode register */
__be16 sicmr1; /* SI1 TDMC mode register */
__be16 sidmr1; /* SI1 TDMD mode register */
__be16 sixmr1[4]; /* SI1 TDMx (x = A B C D) mode register */
u8 siglmr1_h; /* SI1 global mode register high */
u8 res0[0x1];
u8 sicmdr1_h; /* SI1 command register high */

94
include/soc/fsl/qe/qe_tdm.h Normal file
View File

@@ -0,0 +1,94 @@
/*
* Internal header file for QE TDM mode routines.
*
* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
*
* Authors: Zhao Qiang <qiang.zhao@nxp.com>
*
* 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 CONFIG_QE_TDM_H
#define CONFIG_QE_TDM_H
#include <linux/kernel.h>
#include <linux/list.h>
#include <soc/fsl/qe/immap_qe.h>
#include <soc/fsl/qe/qe.h>
#include <soc/fsl/qe/ucc.h>
#include <soc/fsl/qe/ucc_fast.h>
/* SI RAM entries */
#define SIR_LAST 0x0001
#define SIR_BYTE 0x0002
#define SIR_CNT(x) ((x) << 2)
#define SIR_CSEL(x) ((x) << 5)
#define SIR_SGS 0x0200
#define SIR_SWTR 0x4000
#define SIR_MCC 0x8000
#define SIR_IDLE 0
/* SIxMR fields */
#define SIMR_SAD(x) ((x) << 12)
#define SIMR_SDM_NORMAL 0x0000
#define SIMR_SDM_INTERNAL_LOOPBACK 0x0800
#define SIMR_SDM_MASK 0x0c00
#define SIMR_CRT 0x0040
#define SIMR_SL 0x0020
#define SIMR_CE 0x0010
#define SIMR_FE 0x0008
#define SIMR_GM 0x0004
#define SIMR_TFSD(n) (n)
#define SIMR_RFSD(n) ((n) << 8)
enum tdm_ts_t {
TDM_TX_TS,
TDM_RX_TS
};
enum tdm_framer_t {
TDM_FRAMER_T1,
TDM_FRAMER_E1
};
enum tdm_mode_t {
TDM_INTERNAL_LOOPBACK,
TDM_NORMAL
};
struct si_mode_info {
u8 simr_rfsd;
u8 simr_tfsd;
u8 simr_crt;
u8 simr_sl;
u8 simr_ce;
u8 simr_fe;
u8 simr_gm;
};
struct ucc_tdm_info {
struct ucc_fast_info uf_info;
struct si_mode_info si_info;
};
struct ucc_tdm {
u16 tdm_port; /* port for this tdm:TDMA,TDMB */
u32 siram_entry_id;
u16 __iomem *siram;
struct si1 __iomem *si_regs;
enum tdm_framer_t tdm_framer_type;
enum tdm_mode_t tdm_mode;
u8 num_of_ts; /* the number of timeslots in this tdm frame */
u32 tx_ts_mask; /* tx time slot mask */
u32 rx_ts_mask; /* rx time slot mask */
};
int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
struct ucc_tdm_info *ut_info);
void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info);
#endif