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 (H)SCI(F) (used by sh/sh64 and related parts) 9 */ 10 11 #define SCIx_NOT_SUPPORTED (-1) 12 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 */ 19 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 */ 32 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 */ 40 41 #define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER) 42 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 */ 52 53 #define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK) 54 55 /* SCFCR (FIFO Control Register) */ 56 #define SCFCR_LOOP (1 << 0) /* Loopback Test */ 57 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 */ 63 64 /* HSSRR HSCIF */ 65 #define HSCIF_SRE 0x8000 /* Sampling Rate Register Enable */ 66 67 enum { 68 SCIx_PROBE_REGTYPE, 69 70 SCIx_SCI_REGTYPE, 71 SCIx_IRDA_REGTYPE, 72 SCIx_SCIFA_REGTYPE, 73 SCIx_SCIFB_REGTYPE, 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, 80 SCIx_HSCIF_REGTYPE, 81 82 SCIx_NR_REGTYPES, 83 }; 84 85 /* 86 * SCI register subset common for all port types. 87 * Not all registers will exist on all parts. 88 */ 89 enum { 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 */ 103 104 SCIx_NR_REGS, 105 }; 106 107 struct device; 108 109 struct plat_sci_port_ops { 110 void (*init_pins)(struct uart_port *, unsigned int cflag); 111 }; 112 113 /* 114 * Port-specific capabilities 115 */ 116 #define SCIx_HAVE_RTSCTS (1 << 0) 117 118 /* 119 * Platform device specific platform_data struct 120 */ 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 */ 125 126 unsigned int sampling_rate; 127 unsigned int scscr; /* SCSCR initialization */ 128 129 /* 130 * Platform overrides if necessary, defaults otherwise. 131 */ 132 int port_reg; 133 unsigned char regshift; 134 unsigned char regtype; 135 136 struct plat_sci_port_ops *ops; 137 138 unsigned int dma_slave_tx; 139 unsigned int dma_slave_rx; 140 }; 141 142 #endif /* __LINUX_SERIAL_SCI_H */ 143