Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef __LINUX_SERIAL_SCI_H
2#define __LINUX_SERIAL_SCI_H
3
4#include <linux/bitops.h>
5#include <linux/serial_core.h>
6#include <linux/sh_dma.h>
7
8/*
9 * Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts)
10 */
11
12#define SCIx_NOT_SUPPORTED (-1)
13
14/* Serial Control Register (@ = not supported by all parts) */
15#define SCSCR_TIE BIT(7) /* Transmit Interrupt Enable */
16#define SCSCR_RIE BIT(6) /* Receive Interrupt Enable */
17#define SCSCR_TE BIT(5) /* Transmit Enable */
18#define SCSCR_RE BIT(4) /* Receive Enable */
19#define SCSCR_REIE BIT(3) /* Receive Error Interrupt Enable @ */
20#define SCSCR_TOIE BIT(2) /* Timeout Interrupt Enable @ */
21#define SCSCR_CKE1 BIT(1) /* Clock Enable 1 */
22#define SCSCR_CKE0 BIT(0) /* Clock Enable 0 */
23
24
25enum {
26 SCIx_PROBE_REGTYPE,
27
28 SCIx_SCI_REGTYPE,
29 SCIx_IRDA_REGTYPE,
30 SCIx_SCIFA_REGTYPE,
31 SCIx_SCIFB_REGTYPE,
32 SCIx_SH2_SCIF_FIFODATA_REGTYPE,
33 SCIx_SH3_SCIF_REGTYPE,
34 SCIx_SH4_SCIF_REGTYPE,
35 SCIx_SH4_SCIF_BRG_REGTYPE,
36 SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
37 SCIx_SH4_SCIF_FIFODATA_REGTYPE,
38 SCIx_SH7705_SCIF_REGTYPE,
39 SCIx_HSCIF_REGTYPE,
40
41 SCIx_NR_REGTYPES,
42};
43
44struct device;
45
46struct plat_sci_port_ops {
47 void (*init_pins)(struct uart_port *, unsigned int cflag);
48};
49
50/*
51 * Port-specific capabilities
52 */
53#define SCIx_HAVE_RTSCTS BIT(0)
54
55/*
56 * Platform device specific platform_data struct
57 */
58struct plat_sci_port {
59 unsigned int type; /* SCI / SCIF / IRDA / HSCIF */
60 upf_t flags; /* UPF_* flags */
61 unsigned long capabilities; /* Port features/capabilities */
62
63 unsigned int sampling_rate;
64 unsigned int scscr; /* SCSCR initialization */
65
66 /*
67 * Platform overrides if necessary, defaults otherwise.
68 */
69 int port_reg;
70 unsigned char regshift;
71 unsigned char regtype;
72
73 struct plat_sci_port_ops *ops;
74
75 unsigned int dma_slave_tx;
76 unsigned int dma_slave_rx;
77};
78
79#endif /* __LINUX_SERIAL_SCI_H */