LXR linux/include/linux/serial

   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
  25enum {
  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
  44struct device;
  45
  46struct 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 */
  58struct 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 */
  80