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 SCI(F) (used by sh/sh64/h8300 and related parts)
11 #define SCIx_NOT_SUPPORTED (-1)
14 SCBRR_ALGO_1, /* ((clk + 16 * bps) / (16 * bps) - 1) */
15 SCBRR_ALGO_2, /* ((clk + 16 * bps) / (32 * bps) - 1) */
16 SCBRR_ALGO_3, /* (((clk * 2) + 16 * bps) / (16 * bps) - 1) */
17 SCBRR_ALGO_4, /* (((clk * 2) + 16 * bps) / (32 * bps) - 1) */
18 SCBRR_ALGO_5, /* (((clk * 1000 / 32) / bps) - 1) */
21 #define SCSCR_TIE (1 << 7)
22 #define SCSCR_RIE (1 << 6)
23 #define SCSCR_TE (1 << 5)
24 #define SCSCR_RE (1 << 4)
25 #define SCSCR_REIE (1 << 3) /* not supported by all parts */
26 #define SCSCR_TOIE (1 << 2) /* not supported by all parts */
27 #define SCSCR_CKE1 (1 << 1)
28 #define SCSCR_CKE0 (1 << 0)
38 #define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)
41 #define SCIF_ER 0x0080
42 #define SCIF_TEND 0x0040
43 #define SCIF_TDFE 0x0020
44 #define SCIF_BRK 0x0010
45 #define SCIF_FER 0x0008
46 #define SCIF_PER 0x0004
47 #define SCIF_RDF 0x0002
48 #define SCIF_DR 0x0001
50 #define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
52 /* Offsets into the sci_port->irqs array */
68 SCIx_SH3_SCIF_REGTYPE,
69 SCIx_SH4_SCIF_REGTYPE,
70 SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
71 SCIx_SH4_SCIF_FIFODATA_REGTYPE,
72 SCIx_SH7705_SCIF_REGTYPE,
77 #define SCIx_IRQ_MUXED(irq) \
79 [SCIx_ERI_IRQ] = (irq), \
80 [SCIx_RXI_IRQ] = (irq), \
81 [SCIx_TXI_IRQ] = (irq), \
82 [SCIx_BRI_IRQ] = (irq), \
86 * SCI register subset common for all port types.
87 * Not all registers will exist on all parts.
90 SCSMR, SCBRR, SCSCR, SCxSR,
91 SCFCR, SCFDR, SCxTDR, SCxRDR,
92 SCLSR, SCTFDR, SCRFDR, SCSPTR,
99 struct plat_sci_port_ops {
100 void (*init_pins)(struct uart_port *, unsigned int cflag);
104 * Platform device specific platform_data struct
106 struct plat_sci_port {
107 unsigned long mapbase; /* resource base */
108 unsigned int irqs[SCIx_NR_IRQS]; /* ERI, RXI, TXI, BRI */
109 unsigned int type; /* SCI / SCIF / IRDA */
110 upf_t flags; /* UPF_* flags */
112 unsigned int scbrr_algo_id; /* SCBRR calculation algo */
113 unsigned int scscr; /* SCSCR initialization */
116 * Platform overrides if necessary, defaults otherwise.
119 unsigned int error_mask;
122 unsigned char regshift;
123 unsigned char regtype;
125 struct plat_sci_port_ops *ops;
127 struct device *dma_dev;
129 unsigned int dma_slave_tx;
130 unsigned int dma_slave_rx;
133 #endif /* __LINUX_SERIAL_SCI_H */