LXR linux/include/linux/serial

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __LINUX_SERIAL_SCI_H
   3#define __LINUX_SERIAL_SCI_H
   4
   5#include <linux/bitops.h>
   6#include <linux/serial_core.h>
   7#include <linux/sh_dma.h>
   8
   9/*
  10 * Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts)
  11 */
  12
  13/* Serial Control Register (@ = not supported by all parts) */
  14#define SCSCR_TIE       BIT(7)  /* Transmit Interrupt Enable */
  15#define SCSCR_RIE       BIT(6)  /* Receive Interrupt Enable */
  16#define SCSCR_TE        BIT(5)  /* Transmit Enable */
  17#define SCSCR_RE        BIT(4)  /* Receive Enable */
  18#define SCSCR_REIE      BIT(3)  /* Receive Error Interrupt Enable @ */
  19#define SCSCR_TOIE      BIT(2)  /* Timeout Interrupt Enable @ */
  20#define SCSCR_CKE1      BIT(1)  /* Clock Enable 1 */
  21#define SCSCR_CKE0      BIT(0)  /* Clock Enable 0 */
  22
  23
  24enum {
  25        SCIx_PROBE_REGTYPE,
  26
  27        SCIx_SCI_REGTYPE,
  28        SCIx_IRDA_REGTYPE,
  29        SCIx_SCIFA_REGTYPE,
  30        SCIx_SCIFB_REGTYPE,
  31        SCIx_SH2_SCIF_FIFODATA_REGTYPE,
  32        SCIx_SH3_SCIF_REGTYPE,
  33        SCIx_SH4_SCIF_REGTYPE,
  34        SCIx_SH4_SCIF_BRG_REGTYPE,
  35        SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
  36        SCIx_SH4_SCIF_FIFODATA_REGTYPE,
  37        SCIx_SH7705_SCIF_REGTYPE,
  38        SCIx_HSCIF_REGTYPE,
  39        SCIx_RZ_SCIFA_REGTYPE,
  40
  41        SCIx_NR_REGTYPES,
  42};
  43
  44struct plat_sci_port_ops {
  45        void (*init_pins)(struct uart_port *, unsigned int cflag);
  46};
  47
  48/*
  49 * Platform device specific platform_data struct
  50 */
  51struct plat_sci_port {
  52        unsigned int    type;                   /* SCI / SCIF / IRDA / HSCIF */
  53        upf_t           flags;                  /* UPF_* flags */
  54
  55        unsigned int    sampling_rate;
  56        unsigned int    scscr;                  /* SCSCR initialization */
  57
  58        /*
  59         * Platform overrides if necessary, defaults otherwise.
  60         */
  61        unsigned char   regtype;
  62
  63        struct plat_sci_port_ops        *ops;
  64};
  65
  66#endif /* __LINUX_SERIAL_SCI_H */
  67