1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __LINUX_SERIAL_SCI_H 3 #define __LINUX_SERIAL_SCI_H 4 5 #include <linux/bitops.h> 6 #include <linux/serial_core.h> 7 #include <linux/sh_dma.h> 8 9 /* 10 * Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts) 11 */ 12 13 /* Serial Control Register (@ = not supported by all parts) */ 14 #define SCSCR_TIE BIT(7) /* Transmit Interrupt Enable */ 15 #define SCSCR_RIE BIT(6) /* Receive Interrupt Enable */ 16 #define SCSCR_TE BIT(5) /* Transmit Enable */ 17 #define SCSCR_RE BIT(4) /* Receive Enable */ 18 #define SCSCR_REIE BIT(3) /* Receive Error Interrupt Enable @ */ 19 #define SCSCR_TOIE BIT(2) /* Timeout Interrupt Enable @ */ 20 #define SCSCR_CKE1 BIT(1) /* Clock Enable 1 */ 21 #define SCSCR_CKE0 BIT(0) /* Clock Enable 0 */ 22 23 24 enum { 25 SCIx_PROBE_REGTYPE, 26 27 SCIx_SCI_REGTYPE, 28 SCIx_IRDA_REGTYPE, 29 SCIx_SCIFA_REGTYPE, 30 SCIx_SCIFB_REGTYPE, 31 SCIx_SH2_SCIF_FIFODATA_REGTYPE, 32 SCIx_SH3_SCIF_REGTYPE, 33 SCIx_SH4_SCIF_REGTYPE, 34 SCIx_SH4_SCIF_BRG_REGTYPE, 35 SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE, 36 SCIx_SH4_SCIF_FIFODATA_REGTYPE, 37 SCIx_SH7705_SCIF_REGTYPE, 38 SCIx_HSCIF_REGTYPE, 39 SCIx_RZ_SCIFA_REGTYPE, 40 41 SCIx_NR_REGTYPES, 42 }; 43 44 struct plat_sci_port_ops { 45 void (*init_pins)(struct uart_port *, unsigned int cflag); 46 }; 47 48 /* 49 * Platform device specific platform_data struct 50 */ 51 struct plat_sci_port { 52 unsigned int type; /* SCI / SCIF / IRDA / HSCIF */ 53 upf_t flags; /* UPF_* flags */ 54 55 unsigned int sampling_rate; 56 unsigned int scscr; /* SCSCR initialization */ 57 58 /* 59 * Platform overrides if necessary, defaults otherwise. 60 */ 61 unsigned char regtype; 62 63 struct plat_sci_port_ops *ops; 64 }; 65 66 #endif /* __LINUX_SERIAL_SCI_H */ 67