LXR linux/include/linux/serial

   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 SCI(F) (used by sh/sh64/h8300 and related parts)
   9 */
  10
  11enum {
  12        SCBRR_ALGO_1,           /* ((clk + 16 * bps) / (16 * bps) - 1) */
  13        SCBRR_ALGO_2,           /* ((clk + 16 * bps) / (32 * bps) - 1) */
  14        SCBRR_ALGO_3,           /* (((clk * 2) + 16 * bps) / (16 * bps) - 1) */
  15        SCBRR_ALGO_4,           /* (((clk * 2) + 16 * bps) / (32 * bps) - 1) */
  16        SCBRR_ALGO_5,           /* (((clk * 1000 / 32) / bps) - 1) */
  17};
  18
  19#define SCSCR_TIE       (1 << 7)
  20#define SCSCR_RIE       (1 << 6)
  21#define SCSCR_TE        (1 << 5)
  22#define SCSCR_RE        (1 << 4)
  23#define SCSCR_REIE      (1 << 3)        /* not supported by all parts */
  24#define SCSCR_TOIE      (1 << 2)        /* not supported by all parts */
  25#define SCSCR_CKE1      (1 << 1)
  26#define SCSCR_CKE0      (1 << 0)
  27
  28/* Offsets into the sci_port->irqs array */
  29enum {
  30        SCIx_ERI_IRQ,
  31        SCIx_RXI_IRQ,
  32        SCIx_TXI_IRQ,
  33        SCIx_BRI_IRQ,
  34        SCIx_NR_IRQS,
  35};
  36
  37#define SCIx_IRQ_MUXED(irq)             \
  38{                                       \
  39        [SCIx_ERI_IRQ]  = (irq),        \
  40        [SCIx_RXI_IRQ]  = (irq),        \
  41        [SCIx_TXI_IRQ]  = (irq),        \
  42        [SCIx_BRI_IRQ]  = (irq),        \
  43}
  44
  45struct device;
  46
  47/*
  48 * Platform device specific platform_data struct
  49 */
  50struct plat_sci_port {
  51        unsigned long   mapbase;                /* resource base */
  52        unsigned int    irqs[SCIx_NR_IRQS];     /* ERI, RXI, TXI, BRI */
  53        unsigned int    type;                   /* SCI / SCIF / IRDA */
  54        upf_t           flags;                  /* UPF_* flags */
  55
  56        unsigned int    scbrr_algo_id;          /* SCBRR calculation algo */
  57        unsigned int    scscr;                  /* SCSCR initialization */
  58
  59        struct device   *dma_dev;
  60
  61        unsigned int    dma_slave_tx;
  62        unsigned int    dma_slave_rx;
  63};
  64
  65#endif /* __LINUX_SERIAL_SCI_H */
  66