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 */ 66