include/linux/serial_sci.h

   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 #define SCSCR_TIE       (1 << 7)
  14 #define SCSCR_RIE       (1 << 6)
  15 #define SCSCR_TE        (1 << 5)
  16 #define SCSCR_RE        (1 << 4)
  17 #define SCSCR_REIE      (1 << 3)        /* not supported by all parts */
  18 #define SCSCR_TOIE      (1 << 2)        /* not supported by all parts */
  19 #define SCSCR_CKE1      (1 << 1)
  20 #define SCSCR_CKE0      (1 << 0)
  21
  22 /* SCxSR SCI */
  23 #define SCI_TDRE  0x80
  24 #define SCI_RDRF  0x40
  25 #define SCI_ORER  0x20
  26 #define SCI_FER   0x10
  27 #define SCI_PER   0x08
  28 #define SCI_TEND  0x04
  29
  30 #define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)
  31
  32 /* SCxSR SCIF, HSCIF */
  33 #define SCIF_ER    0x0080
  34 #define SCIF_TEND  0x0040
  35 #define SCIF_TDFE  0x0020
  36 #define SCIF_BRK   0x0010
  37 #define SCIF_FER   0x0008
  38 #define SCIF_PER   0x0004
  39 #define SCIF_RDF   0x0002
  40 #define SCIF_DR    0x0001
  41
  42 #define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
  43
  44 /* SCSPTR, optional */
  45 #define SCSPTR_RTSIO    (1 << 7)
  46 #define SCSPTR_CTSIO    (1 << 5)
  47 #define SCSPTR_SPB2IO   (1 << 1)
  48 #define SCSPTR_SPB2DT   (1 << 0)
  49
  50 /* HSSRR HSCIF */
  51 #define HSCIF_SRE       0x8000
  52
  53 enum {
  54         SCIx_PROBE_REGTYPE,
  55
  56         SCIx_SCI_REGTYPE,
  57         SCIx_IRDA_REGTYPE,
  58         SCIx_SCIFA_REGTYPE,
  59         SCIx_SCIFB_REGTYPE,
  60         SCIx_SH2_SCIF_FIFODATA_REGTYPE,
  61         SCIx_SH3_SCIF_REGTYPE,
  62         SCIx_SH4_SCIF_REGTYPE,
  63         SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
  64         SCIx_SH4_SCIF_FIFODATA_REGTYPE,
  65         SCIx_SH7705_SCIF_REGTYPE,
  66         SCIx_HSCIF_REGTYPE,
  67
  68         SCIx_NR_REGTYPES,
  69 };
  70
  71 /*
  72  * SCI register subset common for all port types.
  73  * Not all registers will exist on all parts.
  74  */
  75 enum {
  76         SCSMR, SCBRR, SCSCR, SCxSR,
  77         SCFCR, SCFDR, SCxTDR, SCxRDR,
  78         SCLSR, SCTFDR, SCRFDR, SCSPTR,
  79         HSSRR,
  80
  81         SCIx_NR_REGS,
  82 };
  83
  84 struct device;
  85
  86 struct plat_sci_port_ops {
  87         void (*init_pins)(struct uart_port *, unsigned int cflag);
  88 };
  89
  90 /*
  91  * Port-specific capabilities
  92  */
  93 #define SCIx_HAVE_RTSCTS        (1 << 0)
  94
  95 /*
  96  * Platform device specific platform_data struct
  97  */
  98 struct plat_sci_port {
  99         unsigned int    type;                   /* SCI / SCIF / IRDA / HSCIF */
 100         upf_t           flags;                  /* UPF_* flags */
 101         unsigned long   capabilities;           /* Port features/capabilities */
 102
 103         unsigned int    sampling_rate;
 104         unsigned int    scscr;                  /* SCSCR initialization */
 105
 106         /*
 107          * Platform overrides if necessary, defaults otherwise.
 108          */
 109         int             port_reg;
 110         unsigned char   regshift;
 111         unsigned char   regtype;
 112
 113         struct plat_sci_port_ops        *ops;
 114
 115         unsigned int    dma_slave_tx;
 116         unsigned int    dma_slave_rx;
 117 };
 118
 119 #endif /* __LINUX_SERIAL_SCI_H */