fsl/qe: Add QE TDM lib

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>

2 files changed, 95 insertions, 4 deletions

diff --git a/include/soc/fsl/qe/immap_qe.h b/include/soc/fsl/qe/immap_qe.h
index bedbff891423..c76ef30b05ba 100644
--- a/include/soc/fsl/qe/immap_qe.h
+++ b/include/soc/fsl/qe/immap_qe.h
@@ -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 */
diff --git a/include/soc/fsl/qe/qe_tdm.h b/include/soc/fsl/qe/qe_tdm.h
new file mode 100644
index 000000000000..4c91498ab117
--- /dev/null
+++ b/include/soc/fsl/qe/qe_tdm.h
@@ -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