Maxim/driver: Add driver for maxim ds26522

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wan/slic_ds26522.h b/drivers/net/wan/slic_ds26522.h
new file mode 100644
index 0000000..22aa0ec
--- /dev/null
+++ b/drivers/net/wan/slic_ds26522.h
@@ -0,0 +1,134 @@
+/*
+ * drivers/tdm/line_ctrl/slic_ds26522.h
+ *
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ *
+ * Author: Zhao Qiang <B45475@freescale.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.
+ */
+
+#define DS26522_RF_ADDR_START	0x00
+#define DS26522_RF_ADDR_END	0xef
+#define DS26522_GLB_ADDR_START	0xf0
+#define DS26522_GLB_ADDR_END	0xff
+#define DS26522_TF_ADDR_START	0x100
+#define DS26522_TF_ADDR_END	0x1ef
+#define DS26522_LIU_ADDR_START	0x1000
+#define DS26522_LIU_ADDR_END	0x101f
+#define DS26522_TEST_ADDR_START	0x1008
+#define DS26522_TEST_ADDR_END	0x101f
+#define DS26522_BERT_ADDR_START	0x1100
+#define DS26522_BERT_ADDR_END	0x110f
+
+#define DS26522_RMMR_ADDR	0x80
+#define DS26522_RCR1_ADDR	0x81
+#define DS26522_RCR3_ADDR	0x83
+#define DS26522_RIOCR_ADDR	0x84
+
+#define DS26522_GTCR1_ADDR	0xf0
+#define DS26522_GFCR_ADDR	0xf1
+#define DS26522_GTCR2_ADDR	0xf2
+#define DS26522_GTCCR_ADDR	0xf3
+#define DS26522_GLSRR_ADDR	0xf5
+#define DS26522_GFSRR_ADDR	0xf6
+#define DS26522_IDR_ADDR	0xf8
+
+#define DS26522_E1TAF_ADDR	0x164
+#define DS26522_E1TNAF_ADDR	0x165
+#define DS26522_TMMR_ADDR	0x180
+#define DS26522_TCR1_ADDR	0x181
+#define DS26522_TIOCR_ADDR	0x184
+
+#define DS26522_LTRCR_ADDR	0x1000
+#define DS26522_LTITSR_ADDR	0x1001
+#define DS26522_LMCR_ADDR	0x1002
+#define DS26522_LRISMR_ADDR	0x1007
+
+#define MAX_NUM_OF_CHANNELS	8
+#define PQ_MDS_8E1T1_BRD_REV	0x00
+#define PQ_MDS_8E1T1_PLD_REV	0x00
+
+#define DS26522_GTCCR_BPREFSEL_REFCLKIN	0xa0
+#define DS26522_GTCCR_BFREQSEL_1544KHZ	0x08
+#define DS26522_GTCCR_FREQSEL_1544KHZ	0x04
+#define DS26522_GTCCR_BFREQSEL_2048KHZ	0x00
+#define DS26522_GTCCR_FREQSEL_2048KHZ	0x00
+
+#define DS26522_GFCR_BPCLK_2048KHZ	0x00
+
+#define DS26522_GTCR2_TSSYNCOUT	0x02
+#define DS26522_GTCR1	0x00
+
+#define DS26522_GFSRR_RESET	0x01
+#define DS26522_GFSRR_NORMAL	0x00
+
+#define DS26522_GLSRR_RESET	0x01
+#define DS26522_GLSRR_NORMAL	0x00
+
+#define DS26522_RMMR_SFTRST	0x02
+#define DS26522_RMMR_FRM_EN	0x80
+#define DS26522_RMMR_INIT_DONE	0x40
+#define DS26522_RMMR_T1		0x00
+#define DS26522_RMMR_E1		0x01
+
+#define DS26522_E1TAF_DEFAULT	0x1b
+#define DS26522_E1TNAF_DEFAULT	0x40
+
+#define DS26522_TMMR_SFTRST	0x02
+#define DS26522_TMMR_FRM_EN	0x80
+#define DS26522_TMMR_INIT_DONE	0x40
+#define DS26522_TMMR_T1		0x00
+#define DS26522_TMMR_E1		0x01
+
+#define DS26522_RCR1_T1_SYNCT	0x80
+#define DS26522_RCR1_T1_RB8ZS	0x40
+#define DS26522_RCR1_T1_SYNCC	0x08
+
+#define DS26522_RCR1_E1_HDB3	0x40
+#define DS26522_RCR1_E1_CCS	0x20
+
+#define DS26522_RIOCR_1544KHZ	0x00
+#define DS26522_RIOCR_2048KHZ	0x10
+#define DS26522_RIOCR_RSIO_OUT	0x00
+
+#define DS26522_RCR3_FLB	0x01
+
+#define DS26522_TIOCR_1544KHZ	0x00
+#define DS26522_TIOCR_2048KHZ	0x10
+#define DS26522_TIOCR_TSIO_OUT	0x04
+
+#define DS26522_TCR1_TB8ZS	0x04
+
+#define DS26522_LTRCR_T1	0x02
+#define DS26522_LTRCR_E1	0x00
+
+#define DS26522_LTITSR_TLIS_75OHM	0x00
+#define DS26522_LTITSR_LBOS_75OHM	0x00
+#define DS26522_LTITSR_TLIS_100OHM	0x10
+#define DS26522_LTITSR_TLIS_0DB_CSU	0x00
+
+#define DS26522_LRISMR_75OHM	0x00
+#define DS26522_LRISMR_100OHM	0x10
+#define DS26522_LRISMR_MAX	0x03
+
+#define DS26522_LMCR_TE	0x01
+
+enum line_rate {
+	LINE_RATE_T1,	/* T1 line rate (1.544 Mbps)      */
+	LINE_RATE_E1	/* E1 line rate (2.048 Mbps)     */
+};
+
+enum tdm_trans_mode {
+	NORMAL = 0,
+	FRAMER_LB
+};
+
+enum card_support_type {
+	LM_CARD = 0,
+	DS26522_CARD,
+	NO_CARD
+};