summaryrefslogtreecommitdiffstats
path: root/kernel/include/linux/serial_sci.h
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/include/linux/serial_sci.h')
-rw-r--r--kernel/include/linux/serial_sci.h142
1 files changed, 142 insertions, 0 deletions
diff --git a/kernel/include/linux/serial_sci.h b/kernel/include/linux/serial_sci.h
new file mode 100644
index 000000000..6c5e3bb28
--- /dev/null
+++ b/kernel/include/linux/serial_sci.h
@@ -0,0 +1,142 @@
+#ifndef __LINUX_SERIAL_SCI_H
+#define __LINUX_SERIAL_SCI_H
+
+#include <linux/serial_core.h>
+#include <linux/sh_dma.h>
+
+/*
+ * Generic header for SuperH (H)SCI(F) (used by sh/sh64 and related parts)
+ */
+
+#define SCIx_NOT_SUPPORTED (-1)
+
+/* SCSMR (Serial Mode Register) */
+#define SCSMR_CHR (1 << 6) /* 7-bit Character Length */
+#define SCSMR_PE (1 << 5) /* Parity Enable */
+#define SCSMR_ODD (1 << 4) /* Odd Parity */
+#define SCSMR_STOP (1 << 3) /* Stop Bit Length */
+#define SCSMR_CKS 0x0003 /* Clock Select */
+
+/* Serial Control Register (@ = not supported by all parts) */
+#define SCSCR_TIE (1 << 7) /* Transmit Interrupt Enable */
+#define SCSCR_RIE (1 << 6) /* Receive Interrupt Enable */
+#define SCSCR_TE (1 << 5) /* Transmit Enable */
+#define SCSCR_RE (1 << 4) /* Receive Enable */
+#define SCSCR_REIE (1 << 3) /* Receive Error Interrupt Enable @ */
+#define SCSCR_TOIE (1 << 2) /* Timeout Interrupt Enable @ */
+#define SCSCR_CKE1 (1 << 1) /* Clock Enable 1 */
+#define SCSCR_CKE0 (1 << 0) /* Clock Enable 0 */
+/* SCIFA/SCIFB only */
+#define SCSCR_TDRQE (1 << 15) /* Tx Data Transfer Request Enable */
+#define SCSCR_RDRQE (1 << 14) /* Rx Data Transfer Request Enable */
+
+/* SCxSR (Serial Status Register) on SCI */
+#define SCI_TDRE 0x80 /* Transmit Data Register Empty */
+#define SCI_RDRF 0x40 /* Receive Data Register Full */
+#define SCI_ORER 0x20 /* Overrun Error */
+#define SCI_FER 0x10 /* Framing Error */
+#define SCI_PER 0x08 /* Parity Error */
+#define SCI_TEND 0x04 /* Transmit End */
+
+#define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)
+
+/* SCxSR (Serial Status Register) on SCIF, HSCIF */
+#define SCIF_ER 0x0080 /* Receive Error */
+#define SCIF_TEND 0x0040 /* Transmission End */
+#define SCIF_TDFE 0x0020 /* Transmit FIFO Data Empty */
+#define SCIF_BRK 0x0010 /* Break Detect */
+#define SCIF_FER 0x0008 /* Framing Error */
+#define SCIF_PER 0x0004 /* Parity Error */
+#define SCIF_RDF 0x0002 /* Receive FIFO Data Full */
+#define SCIF_DR 0x0001 /* Receive Data Ready */
+
+#define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
+
+/* SCFCR (FIFO Control Register) */
+#define SCFCR_LOOP (1 << 0) /* Loopback Test */
+
+/* SCSPTR (Serial Port Register), optional */
+#define SCSPTR_RTSIO (1 << 7) /* Serial Port RTS Pin Input/Output */
+#define SCSPTR_CTSIO (1 << 5) /* Serial Port CTS Pin Input/Output */
+#define SCSPTR_SPB2IO (1 << 1) /* Serial Port Break Input/Output */
+#define SCSPTR_SPB2DT (1 << 0) /* Serial Port Break Data */
+
+/* HSSRR HSCIF */
+#define HSCIF_SRE 0x8000 /* Sampling Rate Register Enable */
+
+enum {
+ SCIx_PROBE_REGTYPE,
+
+ SCIx_SCI_REGTYPE,
+ SCIx_IRDA_REGTYPE,
+ SCIx_SCIFA_REGTYPE,
+ SCIx_SCIFB_REGTYPE,
+ SCIx_SH2_SCIF_FIFODATA_REGTYPE,
+ SCIx_SH3_SCIF_REGTYPE,
+ SCIx_SH4_SCIF_REGTYPE,
+ SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
+ SCIx_SH4_SCIF_FIFODATA_REGTYPE,
+ SCIx_SH7705_SCIF_REGTYPE,
+ SCIx_HSCIF_REGTYPE,
+
+ SCIx_NR_REGTYPES,
+};
+
+/*
+ * SCI register subset common for all port types.
+ * Not all registers will exist on all parts.
+ */
+enum {
+ SCSMR, /* Serial Mode Register */
+ SCBRR, /* Bit Rate Register */
+ SCSCR, /* Serial Control Register */
+ SCxSR, /* Serial Status Register */
+ SCFCR, /* FIFO Control Register */
+ SCFDR, /* FIFO Data Count Register */
+ SCxTDR, /* Transmit (FIFO) Data Register */
+ SCxRDR, /* Receive (FIFO) Data Register */
+ SCLSR, /* Line Status Register */
+ SCTFDR, /* Transmit FIFO Data Count Register */
+ SCRFDR, /* Receive FIFO Data Count Register */
+ SCSPTR, /* Serial Port Register */
+ HSSRR, /* Sampling Rate Register */
+
+ SCIx_NR_REGS,
+};
+
+struct device;
+
+struct plat_sci_port_ops {
+ void (*init_pins)(struct uart_port *, unsigned int cflag);
+};
+
+/*
+ * Port-specific capabilities
+ */
+#define SCIx_HAVE_RTSCTS (1 << 0)
+
+/*
+ * Platform device specific platform_data struct
+ */
+struct plat_sci_port {
+ unsigned int type; /* SCI / SCIF / IRDA / HSCIF */
+ upf_t flags; /* UPF_* flags */
+ unsigned long capabilities; /* Port features/capabilities */
+
+ unsigned int sampling_rate;
+ unsigned int scscr; /* SCSCR initialization */
+
+ /*
+ * Platform overrides if necessary, defaults otherwise.
+ */
+ int port_reg;
+ unsigned char regshift;
+ unsigned char regtype;
+
+ struct plat_sci_port_ops *ops;
+
+ unsigned int dma_slave_tx;
+ unsigned int dma_slave_rx;
+};
+
+#endif /* __LINUX_SERIAL_SCI_H */