1 #ifndef __LINUX_SERIAL_SCI_H
2 #define __LINUX_SERIAL_SCI_H
4 #include <linux/serial_core.h>
5 #include <linux/sh_dma.h>
8 * Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts)
11 #define SCIx_NOT_SUPPORTED (-1)
13 /* SCSMR (Serial Mode Register) */
14 #define SCSMR_CHR (1 << 6) /* 7-bit Character Length */
15 #define SCSMR_PE (1 << 5) /* Parity Enable */
16 #define SCSMR_ODD (1 << 4) /* Odd Parity */
17 #define SCSMR_STOP (1 << 3) /* Stop Bit Length */
18 #define SCSMR_CKS 0x0003 /* Clock Select */
20 /* Serial Control Register (@ = not supported by all parts) */
21 #define SCSCR_TIE (1 << 7) /* Transmit Interrupt Enable */
22 #define SCSCR_RIE (1 << 6) /* Receive Interrupt Enable */
23 #define SCSCR_TE (1 << 5) /* Transmit Enable */
24 #define SCSCR_RE (1 << 4) /* Receive Enable */
25 #define SCSCR_REIE (1 << 3) /* Receive Error Interrupt Enable @ */
26 #define SCSCR_TOIE (1 << 2) /* Timeout Interrupt Enable @ */
27 #define SCSCR_CKE1 (1 << 1) /* Clock Enable 1 */
28 #define SCSCR_CKE0 (1 << 0) /* Clock Enable 0 */
29 /* SCIFA/SCIFB only */
30 #define SCSCR_TDRQE (1 << 15) /* Tx Data Transfer Request Enable */
31 #define SCSCR_RDRQE (1 << 14) /* Rx Data Transfer Request Enable */
33 /* SCxSR (Serial Status Register) on SCI */
34 #define SCI_TDRE 0x80 /* Transmit Data Register Empty */
35 #define SCI_RDRF 0x40 /* Receive Data Register Full */
36 #define SCI_ORER 0x20 /* Overrun Error */
37 #define SCI_FER 0x10 /* Framing Error */
38 #define SCI_PER 0x08 /* Parity Error */
39 #define SCI_TEND 0x04 /* Transmit End */
41 #define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)
43 /* SCxSR (Serial Status Register) on SCIF, HSCIF */
44 #define SCIF_ER 0x0080 /* Receive Error */
45 #define SCIF_TEND 0x0040 /* Transmission End */
46 #define SCIF_TDFE 0x0020 /* Transmit FIFO Data Empty */
47 #define SCIF_BRK 0x0010 /* Break Detect */
48 #define SCIF_FER 0x0008 /* Framing Error */
49 #define SCIF_PER 0x0004 /* Parity Error */
50 #define SCIF_RDF 0x0002 /* Receive FIFO Data Full */
51 #define SCIF_DR 0x0001 /* Receive Data Ready */
53 #define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
55 /* SCFCR (FIFO Control Register) */
56 #define SCFCR_LOOP (1 << 0) /* Loopback Test */
58 /* SCSPTR (Serial Port Register), optional */
59 #define SCSPTR_RTSIO (1 << 7) /* Serial Port RTS Pin Input/Output */
60 #define SCSPTR_CTSIO (1 << 5) /* Serial Port CTS Pin Input/Output */
61 #define SCSPTR_SPB2IO (1 << 1) /* Serial Port Break Input/Output */
62 #define SCSPTR_SPB2DT (1 << 0) /* Serial Port Break Data */
65 #define HSCIF_SRE 0x8000 /* Sampling Rate Register Enable */
74 SCIx_SH2_SCIF_FIFODATA_REGTYPE,
75 SCIx_SH3_SCIF_REGTYPE,
76 SCIx_SH4_SCIF_REGTYPE,
77 SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
78 SCIx_SH4_SCIF_FIFODATA_REGTYPE,
79 SCIx_SH7705_SCIF_REGTYPE,
86 * SCI register subset common for all port types.
87 * Not all registers will exist on all parts.
90 SCSMR, /* Serial Mode Register */
91 SCBRR, /* Bit Rate Register */
92 SCSCR, /* Serial Control Register */
93 SCxSR, /* Serial Status Register */
94 SCFCR, /* FIFO Control Register */
95 SCFDR, /* FIFO Data Count Register */
96 SCxTDR, /* Transmit (FIFO) Data Register */
97 SCxRDR, /* Receive (FIFO) Data Register */
98 SCLSR, /* Line Status Register */
99 SCTFDR, /* Transmit FIFO Data Count Register */
100 SCRFDR, /* Receive FIFO Data Count Register */
101 SCSPTR, /* Serial Port Register */
102 HSSRR, /* Sampling Rate Register */
109 struct plat_sci_port_ops {
110 void (*init_pins)(struct uart_port *, unsigned int cflag);
114 * Port-specific capabilities
116 #define SCIx_HAVE_RTSCTS (1 << 0)
119 * Platform device specific platform_data struct
121 struct plat_sci_port {
122 unsigned int type; /* SCI / SCIF / IRDA / HSCIF */
123 upf_t flags; /* UPF_* flags */
124 unsigned long capabilities; /* Port features/capabilities */
126 unsigned int sampling_rate;
127 unsigned int scscr; /* SCSCR initialization */
130 * Platform overrides if necessary, defaults otherwise.
133 unsigned char regshift;
134 unsigned char regtype;
136 struct plat_sci_port_ops *ops;
138 unsigned int dma_slave_tx;
139 unsigned int dma_slave_rx;
142 #endif /* __LINUX_SERIAL_SCI_H */