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1 | #ifndef __LINUX_SERIAL_SCI_H | |
2 | #define __LINUX_SERIAL_SCI_H | |
3 | ||
4 | #include <linux/serial_core.h> | |
5 | #include <linux/sh_dma.h> | |
6 | ||
7 | /* | |
8 | * Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts) | |
9 | */ | |
10 | ||
11 | #define SCIx_NOT_SUPPORTED (-1) | |
12 | ||
13 | enum { | |
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) */ | |
19 | }; | |
20 | ||
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) | |
29 | ||
30 | /* SCxSR SCI */ | |
31 | #define SCI_TDRE 0x80 | |
32 | #define SCI_RDRF 0x40 | |
33 | #define SCI_ORER 0x20 | |
34 | #define SCI_FER 0x10 | |
35 | #define SCI_PER 0x08 | |
36 | #define SCI_TEND 0x04 | |
37 | ||
38 | #define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER) | |
39 | ||
40 | /* SCxSR SCIF */ | |
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 | |
49 | ||
50 | #define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK) | |
51 | ||
52 | /* SCSPTR, optional */ | |
53 | #define SCSPTR_RTSIO (1 << 7) | |
54 | #define SCSPTR_CTSIO (1 << 5) | |
55 | #define SCSPTR_SPB2IO (1 << 1) | |
56 | #define SCSPTR_SPB2DT (1 << 0) | |
57 | ||
58 | /* Offsets into the sci_port->irqs array */ | |
59 | enum { | |
60 | SCIx_ERI_IRQ, | |
61 | SCIx_RXI_IRQ, | |
62 | SCIx_TXI_IRQ, | |
63 | SCIx_BRI_IRQ, | |
64 | SCIx_NR_IRQS, | |
65 | ||
66 | SCIx_MUX_IRQ = SCIx_NR_IRQS, /* special case */ | |
67 | }; | |
68 | ||
69 | /* Offsets into the sci_port->gpios array */ | |
70 | enum { | |
71 | SCIx_SCK, | |
72 | SCIx_RXD, | |
73 | SCIx_TXD, | |
74 | SCIx_CTS, | |
75 | SCIx_RTS, | |
76 | ||
77 | SCIx_NR_FNS, | |
78 | }; | |
79 | ||
80 | enum { | |
81 | SCIx_PROBE_REGTYPE, | |
82 | ||
83 | SCIx_SCI_REGTYPE, | |
84 | SCIx_IRDA_REGTYPE, | |
85 | SCIx_SCIFA_REGTYPE, | |
86 | SCIx_SCIFB_REGTYPE, | |
87 | SCIx_SH2_SCIF_FIFODATA_REGTYPE, | |
88 | SCIx_SH3_SCIF_REGTYPE, | |
89 | SCIx_SH4_SCIF_REGTYPE, | |
90 | SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE, | |
91 | SCIx_SH4_SCIF_FIFODATA_REGTYPE, | |
92 | SCIx_SH7705_SCIF_REGTYPE, | |
93 | ||
94 | SCIx_NR_REGTYPES, | |
95 | }; | |
96 | ||
97 | #define SCIx_IRQ_MUXED(irq) \ | |
98 | { \ | |
99 | [SCIx_ERI_IRQ] = (irq), \ | |
100 | [SCIx_RXI_IRQ] = (irq), \ | |
101 | [SCIx_TXI_IRQ] = (irq), \ | |
102 | [SCIx_BRI_IRQ] = (irq), \ | |
103 | } | |
104 | ||
105 | #define SCIx_IRQ_IS_MUXED(port) \ | |
106 | ((port)->cfg->irqs[SCIx_ERI_IRQ] == \ | |
107 | (port)->cfg->irqs[SCIx_RXI_IRQ]) || \ | |
108 | ((port)->cfg->irqs[SCIx_ERI_IRQ] && \ | |
109 | !(port)->cfg->irqs[SCIx_RXI_IRQ]) | |
110 | /* | |
111 | * SCI register subset common for all port types. | |
112 | * Not all registers will exist on all parts. | |
113 | */ | |
114 | enum { | |
115 | SCSMR, SCBRR, SCSCR, SCxSR, | |
116 | SCFCR, SCFDR, SCxTDR, SCxRDR, | |
117 | SCLSR, SCTFDR, SCRFDR, SCSPTR, | |
118 | ||
119 | SCIx_NR_REGS, | |
120 | }; | |
121 | ||
122 | struct device; | |
123 | ||
124 | struct plat_sci_port_ops { | |
125 | void (*init_pins)(struct uart_port *, unsigned int cflag); | |
126 | }; | |
127 | ||
128 | /* | |
129 | * Port-specific capabilities | |
130 | */ | |
131 | #define SCIx_HAVE_RTSCTS (1 << 0) | |
132 | ||
133 | /* | |
134 | * Platform device specific platform_data struct | |
135 | */ | |
136 | struct plat_sci_port { | |
137 | unsigned long mapbase; /* resource base */ | |
138 | unsigned int irqs[SCIx_NR_IRQS]; /* ERI, RXI, TXI, BRI */ | |
139 | unsigned int gpios[SCIx_NR_FNS]; /* SCK, RXD, TXD, CTS, RTS */ | |
140 | unsigned int type; /* SCI / SCIF / IRDA */ | |
141 | upf_t flags; /* UPF_* flags */ | |
142 | unsigned long capabilities; /* Port features/capabilities */ | |
143 | ||
144 | unsigned int scbrr_algo_id; /* SCBRR calculation algo */ | |
145 | unsigned int scscr; /* SCSCR initialization */ | |
146 | ||
147 | /* | |
148 | * Platform overrides if necessary, defaults otherwise. | |
149 | */ | |
150 | int overrun_bit; | |
151 | unsigned int error_mask; | |
152 | ||
153 | int port_reg; | |
154 | unsigned char regshift; | |
155 | unsigned char regtype; | |
156 | ||
157 | struct plat_sci_port_ops *ops; | |
158 | ||
159 | unsigned int dma_slave_tx; | |
160 | unsigned int dma_slave_rx; | |
161 | }; | |
162 | ||
163 | #endif /* __LINUX_SERIAL_SCI_H */ |