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 SCI(F) (used by sh/sh64/h8300 and related parts)
   9  */
  10
  11 enum {
  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 */
  29 enum {
  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
  45 struct device;
  46
  47 /*
  48  * Platform device specific platform_data struct
  49  */
  50 struct 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 */