1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __LINUX_SERIAL_SCI_H
3#define __LINUX_SERIAL_SCI_H
4
5#include <linux/bitops.h>
6#include <linux/serial_core.h>
7#include <linux/sh_dma.h>
8
9/*
10 * Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts)
11 */
12
13/* Serial Control Register (@ = not supported by all parts) */
14#define SCSCR_TIE	BIT(7)	/* Transmit Interrupt Enable */
15#define SCSCR_RIE	BIT(6)	/* Receive Interrupt Enable */
16#define SCSCR_TE	BIT(5)	/* Transmit Enable */
17#define SCSCR_RE	BIT(4)	/* Receive Enable */
18#define SCSCR_REIE	BIT(3)	/* Receive Error Interrupt Enable @ */
19#define SCSCR_TOIE	BIT(2)	/* Timeout Interrupt Enable @ */
20#define SCSCR_CKE1	BIT(1)	/* Clock Enable 1 */
21#define SCSCR_CKE0	BIT(0)	/* Clock Enable 0 */
22
23
24enum {
25	SCIx_PROBE_REGTYPE,
26
27	SCIx_SCI_REGTYPE,
28	SCIx_IRDA_REGTYPE,
29	SCIx_SCIFA_REGTYPE,
30	SCIx_SCIFB_REGTYPE,
31	SCIx_SH2_SCIF_FIFODATA_REGTYPE,
32	SCIx_SH3_SCIF_REGTYPE,
33	SCIx_SH4_SCIF_REGTYPE,
34	SCIx_SH4_SCIF_BRG_REGTYPE,
35	SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
36	SCIx_SH4_SCIF_FIFODATA_REGTYPE,
37	SCIx_SH7705_SCIF_REGTYPE,
38	SCIx_HSCIF_REGTYPE,
39	SCIx_RZ_SCIFA_REGTYPE,
40
41	SCIx_NR_REGTYPES,
42};
43
44struct plat_sci_port_ops {
45	void (*init_pins)(struct uart_port *, unsigned int cflag);
46};
47
48/*
49 * Platform device specific platform_data struct
50 */
51struct plat_sci_port {
52	unsigned int	type;			/* SCI / SCIF / IRDA / HSCIF */
53	upf_t		flags;			/* UPF_* flags */
54
55	unsigned int	sampling_rate;
56	unsigned int	scscr;			/* SCSCR initialization */
57
58	/*
59	 * Platform overrides if necessary, defaults otherwise.
60	 */
61	unsigned char	regtype;
62
63	struct plat_sci_port_ops	*ops;
64};
65
66#endif /* __LINUX_SERIAL_SCI_H */
67