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 struct device;
  38
  39 /*
  40  * Platform device specific platform_data struct
  41  */
  42 struct plat_sci_port {
  43         void __iomem    *membase;               /* io cookie */
  44         unsigned long   mapbase;                /* resource base */
  45         unsigned int    irqs[SCIx_NR_IRQS];     /* ERI, RXI, TXI, BRI */
  46         unsigned int    type;                   /* SCI / SCIF / IRDA */
  47         upf_t           flags;                  /* UPF_* flags */
  48         char            *clk;                   /* clock string */
  49
  50         unsigned int    scbrr_algo_id;          /* SCBRR calculation algo */
  51         unsigned int    scscr;                  /* SCSCR initialization */
  52
  53         struct device   *dma_dev;
  54
  55 #ifdef CONFIG_SERIAL_SH_SCI_DMA
  56         unsigned int dma_slave_tx;
  57         unsigned int dma_slave_rx;
  58 #endif
  59 };
  60
  61 #endif /* __LINUX_SERIAL_SCI_H */