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 #define SCIx_NOT_SUPPORTED (-1) 12 13 enum { 14 SCBRR_ALGO_1, /* ((clk + 16 * bps) / (16 * bps) - 1) */ 15 SCBRR_ALGO_2, /* ((clk + 16 * bps) / (32 * bps) - 1) */ 16 SCBRR_ALGO_3, /* (((clk * 2) + 16 * bps) / (16 * bps) - 1) */ 17 SCBRR_ALGO_4, /* (((clk * 2) + 16 * bps) / (32 * bps) - 1) */ 18 SCBRR_ALGO_5, /* (((clk * 1000 / 32) / bps) - 1) */ 19 }; 20 21 #define SCSCR_TIE (1 << 7) 22 #define SCSCR_RIE (1 << 6) 23 #define SCSCR_TE (1 << 5) 24 #define SCSCR_RE (1 << 4) 25 #define SCSCR_REIE (1 << 3) /* not supported by all parts */ 26 #define SCSCR_TOIE (1 << 2) /* not supported by all parts */ 27 #define SCSCR_CKE1 (1 << 1) 28 #define SCSCR_CKE0 (1 << 0) 29 30 /* SCxSR SCI */ 31 #define SCI_TDRE 0x80 32 #define SCI_RDRF 0x40 33 #define SCI_ORER 0x20 34 #define SCI_FER 0x10 35 #define SCI_PER 0x08 36 #define SCI_TEND 0x04 37 38 #define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER) 39 40 /* SCxSR SCIF */ 41 #define SCIF_ER 0x0080 42 #define SCIF_TEND 0x0040 43 #define SCIF_TDFE 0x0020 44 #define SCIF_BRK 0x0010 45 #define SCIF_FER 0x0008 46 #define SCIF_PER 0x0004 47 #define SCIF_RDF 0x0002 48 #define SCIF_DR 0x0001 49 50 #define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK) 51 52 /* Offsets into the sci_port->irqs array */ 53 enum { 54 SCIx_ERI_IRQ, 55 SCIx_RXI_IRQ, 56 SCIx_TXI_IRQ, 57 SCIx_BRI_IRQ, 58 SCIx_NR_IRQS, 59 60 SCIx_MUX_IRQ = SCIx_NR_IRQS, /* special case */ 61 }; 62 63 enum { 64 SCIx_PROBE_REGTYPE, 65 66 SCIx_SCI_REGTYPE, 67 SCIx_IRDA_REGTYPE, 68 SCIx_SCIFA_REGTYPE, 69 SCIx_SCIFB_REGTYPE, 70 SCIx_SH3_SCIF_REGTYPE, 71 SCIx_SH4_SCIF_REGTYPE, 72 SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE, 73 SCIx_SH4_SCIF_FIFODATA_REGTYPE, 74 SCIx_SH7705_SCIF_REGTYPE, 75 76 SCIx_NR_REGTYPES, 77 }; 78 79 #define SCIx_IRQ_MUXED(irq) \ 80 { \ 81 [SCIx_ERI_IRQ] = (irq), \ 82 [SCIx_RXI_IRQ] = (irq), \ 83 [SCIx_TXI_IRQ] = (irq), \ 84 [SCIx_BRI_IRQ] = (irq), \ 85 } 86 87 #define SCIx_IRQ_IS_MUXED(port) \ 88 ((port)->cfg->irqs[SCIx_ERI_IRQ] == \ 89 (port)->cfg->irqs[SCIx_RXI_IRQ]) || \ 90 ((port)->cfg->irqs[SCIx_ERI_IRQ] && \ 91 !(port)->cfg->irqs[SCIx_RXI_IRQ]) 92 /* 93 * SCI register subset common for all port types. 94 * Not all registers will exist on all parts. 95 */ 96 enum { 97 SCSMR, SCBRR, SCSCR, SCxSR, 98 SCFCR, SCFDR, SCxTDR, SCxRDR, 99 SCLSR, SCTFDR, SCRFDR, SCSPTR, 100 101 SCIx_NR_REGS, 102 }; 103 104 struct device; 105 106 struct plat_sci_port_ops { 107 void (*init_pins)(struct uart_port *, unsigned int cflag); 108 }; 109 110 /* 111 * Platform device specific platform_data struct 112 */ 113 struct plat_sci_port { 114 unsigned long mapbase; /* resource base */ 115 unsigned int irqs[SCIx_NR_IRQS]; /* ERI, RXI, TXI, BRI */ 116 unsigned int type; /* SCI / SCIF / IRDA */ 117 upf_t flags; /* UPF_* flags */ 118 119 unsigned int scbrr_algo_id; /* SCBRR calculation algo */ 120 unsigned int scscr; /* SCSCR initialization */ 121 122 /* 123 * Platform overrides if necessary, defaults otherwise. 124 */ 125 int overrun_bit; 126 unsigned int error_mask; 127 128 int port_reg; 129 unsigned char regshift; 130 unsigned char regtype; 131 132 struct plat_sci_port_ops *ops; 133 134 struct device *dma_dev; 135 136 unsigned int dma_slave_tx; 137 unsigned int dma_slave_rx; 138 }; 139 140 #endif /* __LINUX_SERIAL_SCI_H */ 141