diff options
Diffstat (limited to 'drivers/tty/serial/sh-sci.h')
| -rw-r--r-- | drivers/tty/serial/sh-sci.h | 140 |
1 files changed, 124 insertions, 16 deletions
diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h index d5db81a0a430..3393f67b4e84 100644 --- a/drivers/tty/serial/sh-sci.h +++ b/drivers/tty/serial/sh-sci.h @@ -1,7 +1,115 @@ +#include <linux/bitops.h> #include <linux/serial_core.h> #include <linux/io.h> #include <linux/gpio.h> +#define SCI_MAJOR 204 +#define SCI_MINOR_START 8 + + +/* + * 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 */ + SCPCR, /* Serial Port Control Register */ + SCPDR, /* Serial Port Data Register */ + + SCIx_NR_REGS, +}; + + +/* SCSMR (Serial Mode Register) */ +#define SCSMR_CHR BIT(6) /* 7-bit Character Length */ +#define SCSMR_PE BIT(5) /* Parity Enable */ +#define SCSMR_ODD BIT(4) /* Odd Parity */ +#define SCSMR_STOP BIT(3) /* Stop Bit Length */ +#define SCSMR_CKS 0x0003 /* Clock Select */ + +/* Serial Control Register, SCIFA/SCIFB only bits */ +#define SCSCR_TDRQE BIT(15) /* Tx Data Transfer Request Enable */ +#define SCSCR_RDRQE BIT(14) /* Rx Data Transfer Request Enable */ + +/* SCxSR (Serial Status Register) on SCI */ +#define SCI_TDRE BIT(7) /* Transmit Data Register Empty */ +#define SCI_RDRF BIT(6) /* Receive Data Register Full */ +#define SCI_ORER BIT(5) /* Overrun Error */ +#define SCI_FER BIT(4) /* Framing Error */ +#define SCI_PER BIT(3) /* Parity Error */ +#define SCI_TEND BIT(2) /* Transmit End */ +#define SCI_RESERVED 0x03 /* All reserved bits */ + +#define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER) + +#define SCI_RDxF_CLEAR ~(SCI_RESERVED | SCI_RDRF) +#define SCI_ERROR_CLEAR ~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER) +#define SCI_TDxE_CLEAR ~(SCI_RESERVED | SCI_TEND | SCI_TDRE) +#define SCI_BREAK_CLEAR ~(SCI_RESERVED | SCI_PER | SCI_FER | SCI_ORER) + +/* SCxSR (Serial Status Register) on SCIF, SCIFA, SCIFB, HSCIF */ +#define SCIF_ER BIT(7) /* Receive Error */ +#define SCIF_TEND BIT(6) /* Transmission End */ +#define SCIF_TDFE BIT(5) /* Transmit FIFO Data Empty */ +#define SCIF_BRK BIT(4) /* Break Detect */ +#define SCIF_FER BIT(3) /* Framing Error */ +#define SCIF_PER BIT(2) /* Parity Error */ +#define SCIF_RDF BIT(1) /* Receive FIFO Data Full */ +#define SCIF_DR BIT(0) /* Receive Data Ready */ +/* SCIF only (optional) */ +#define SCIF_PERC 0xf000 /* Number of Parity Errors */ +#define SCIF_FERC 0x0f00 /* Number of Framing Errors */ +/*SCIFA/SCIFB and SCIF on SH7705/SH7720/SH7721 only */ +#define SCIFA_ORER BIT(9) /* Overrun Error */ + +#define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_BRK | SCIF_ER) + +#define SCIF_RDxF_CLEAR ~(SCIF_DR | SCIF_RDF) +#define SCIF_ERROR_CLEAR ~(SCIFA_ORER | SCIF_PER | SCIF_FER | SCIF_ER) +#define SCIF_TDxE_CLEAR ~(SCIF_TDFE) +#define SCIF_BREAK_CLEAR ~(SCIF_PER | SCIF_FER | SCIF_BRK) + +/* SCFCR (FIFO Control Register) */ +#define SCFCR_MCE BIT(3) /* Modem Control Enable */ +#define SCFCR_TFRST BIT(2) /* Transmit FIFO Data Register Reset */ +#define SCFCR_RFRST BIT(1) /* Receive FIFO Data Register Reset */ +#define SCFCR_LOOP BIT(0) /* Loopback Test */ + +/* SCLSR (Line Status Register) on (H)SCIF */ +#define SCLSR_ORER BIT(0) /* Overrun Error */ + +/* SCSPTR (Serial Port Register), optional */ +#define SCSPTR_RTSIO BIT(7) /* Serial Port RTS Pin Input/Output */ +#define SCSPTR_RTSDT BIT(6) /* Serial Port RTS Pin Data */ +#define SCSPTR_CTSIO BIT(5) /* Serial Port CTS Pin Input/Output */ +#define SCSPTR_CTSDT BIT(4) /* Serial Port CTS Pin Data */ +#define SCSPTR_SPB2IO BIT(1) /* Serial Port Break Input/Output */ +#define SCSPTR_SPB2DT BIT(0) /* Serial Port Break Data */ + +/* HSSRR HSCIF */ +#define HSCIF_SRE BIT(15) /* Sampling Rate Register Enable */ + +/* SCPCR (Serial Port Control Register), SCIFA/SCIFB only */ +#define SCPCR_RTSC BIT(4) /* Serial Port RTS Pin / Output Pin */ +#define SCPCR_CTSC BIT(3) /* Serial Port CTS Pin / Input Pin */ + +/* SCPDR (Serial Port Data Register), SCIFA/SCIFB only */ +#define SCPDR_RTSD BIT(4) /* Serial Port RTS Output Pin Data */ +#define SCPDR_CTSD BIT(3) /* Serial Port CTS Input Pin Data */ + + #define SCxSR_TEND(port) (((port)->type == PORT_SCI) ? SCI_TEND : SCIF_TEND) #define SCxSR_RDxF(port) (((port)->type == PORT_SCI) ? SCI_RDRF : SCIF_RDF) #define SCxSR_TDxE(port) (((port)->type == PORT_SCI) ? SCI_TDRE : SCIF_TDFE) @@ -15,24 +123,24 @@ defined(CONFIG_CPU_SUBTYPE_SH7720) || \ defined(CONFIG_CPU_SUBTYPE_SH7721) || \ defined(CONFIG_ARCH_SH73A0) || \ - defined(CONFIG_ARCH_SH7372) || \ defined(CONFIG_ARCH_R8A7740) -# define SCxSR_RDxF_CLEAR(port) (serial_port_in(port, SCxSR) & 0xfffc) -# define SCxSR_ERROR_CLEAR(port) (serial_port_in(port, SCxSR) & 0xfd73) -# define SCxSR_TDxE_CLEAR(port) (serial_port_in(port, SCxSR) & 0xffdf) -# define SCxSR_BREAK_CLEAR(port) (serial_port_in(port, SCxSR) & 0xffe3) +# define SCxSR_RDxF_CLEAR(port) \ + (serial_port_in(port, SCxSR) & SCIF_RDxF_CLEAR) +# define SCxSR_ERROR_CLEAR(port) \ + (serial_port_in(port, SCxSR) & SCIF_ERROR_CLEAR) +# define SCxSR_TDxE_CLEAR(port) \ + (serial_port_in(port, SCxSR) & SCIF_TDxE_CLEAR) +# define SCxSR_BREAK_CLEAR(port) \ + (serial_port_in(port, SCxSR) & SCIF_BREAK_CLEAR) #else -# define SCxSR_RDxF_CLEAR(port) (((port)->type == PORT_SCI) ? 0xbc : 0x00fc) -# define SCxSR_ERROR_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x0073) -# define SCxSR_TDxE_CLEAR(port) (((port)->type == PORT_SCI) ? 0x78 : 0x00df) -# define SCxSR_BREAK_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x00e3) +# define SCxSR_RDxF_CLEAR(port) \ + ((((port)->type == PORT_SCI) ? SCI_RDxF_CLEAR : SCIF_RDxF_CLEAR) & 0xff) +# define SCxSR_ERROR_CLEAR(port) \ + ((((port)->type == PORT_SCI) ? SCI_ERROR_CLEAR : SCIF_ERROR_CLEAR) & 0xff) +# define SCxSR_TDxE_CLEAR(port) \ + ((((port)->type == PORT_SCI) ? SCI_TDxE_CLEAR : SCIF_TDxE_CLEAR) & 0xff) +# define SCxSR_BREAK_CLEAR(port) \ + ((((port)->type == PORT_SCI) ? SCI_BREAK_CLEAR : SCIF_BREAK_CLEAR) & 0xff) #endif -/* SCFCR */ -#define SCFCR_RFRST 0x0002 -#define SCFCR_TFRST 0x0004 -#define SCFCR_MCE 0x0008 - -#define SCI_MAJOR 204 -#define SCI_MINOR_START 8 |