include/linux/serial_sci.h

   1 #ifndef __LINUX_SERIAL_SCI_H
   2 #define __LINUX_SERIAL_SCI_H
   3
   4 #include <linux/bitops.h>
   5 #include <linux/serial_core.h>
   6 #include <linux/sh_dma.h>
   7
   8 /*
   9  * Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts)
  10  */
  11
  12 #define SCIx_NOT_SUPPORTED      (-1)
  13
  14 /* Serial Control Register (@ = not supported by all parts) */
  15 #define SCSCR_TIE       BIT(7)  /* Transmit Interrupt Enable */
  16 #define SCSCR_RIE       BIT(6)  /* Receive Interrupt Enable */
  17 #define SCSCR_TE        BIT(5)  /* Transmit Enable */
  18 #define SCSCR_RE        BIT(4)  /* Receive Enable */
  19 #define SCSCR_REIE      BIT(3)  /* Receive Error Interrupt Enable @ */
  20 #define SCSCR_TOIE      BIT(2)  /* Timeout Interrupt Enable @ */
  21 #define SCSCR_CKE1      BIT(1)  /* Clock Enable 1 */
  22 #define SCSCR_CKE0      BIT(0)  /* Clock Enable 0 */
  23
  24
  25 enum {
  26         SCIx_PROBE_REGTYPE,
  27
  28         SCIx_SCI_REGTYPE,
  29         SCIx_IRDA_REGTYPE,
  30         SCIx_SCIFA_REGTYPE,
  31         SCIx_SCIFB_REGTYPE,
  32         SCIx_SH2_SCIF_FIFODATA_REGTYPE,
  33         SCIx_SH3_SCIF_REGTYPE,
  34         SCIx_SH4_SCIF_REGTYPE,
  35         SCIx_SH4_SCIF_BRG_REGTYPE,
  36         SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
  37         SCIx_SH4_SCIF_FIFODATA_REGTYPE,
  38         SCIx_SH7705_SCIF_REGTYPE,
  39         SCIx_HSCIF_REGTYPE,
  40
  41         SCIx_NR_REGTYPES,
  42 };
  43
  44 struct device;
  45
  46 struct plat_sci_port_ops {
  47         void (*init_pins)(struct uart_port *, unsigned int cflag);
  48 };
  49
  50 /*
  51  * Port-specific capabilities
  52  */
  53 #define SCIx_HAVE_RTSCTS        BIT(0)
  54
  55 /*
  56  * Platform device specific platform_data struct
  57  */
  58 struct plat_sci_port {
  59         unsigned int    type;                   /* SCI / SCIF / IRDA / HSCIF */
  60         upf_t           flags;                  /* UPF_* flags */
  61         unsigned long   capabilities;           /* Port features/capabilities */
  62
  63         unsigned int    sampling_rate;
  64         unsigned int    scscr;                  /* SCSCR initialization */
  65
  66         /*
  67          * Platform overrides if necessary, defaults otherwise.
  68          */
  69         int             port_reg;
  70         unsigned char   regshift;
  71         unsigned char   regtype;
  72
  73         struct plat_sci_port_ops        *ops;
  74
  75         unsigned int    dma_slave_tx;
  76         unsigned int    dma_slave_rx;
  77 };
  78
  79 #endif /* __LINUX_SERIAL_SCI_H */