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