diff options
Diffstat (limited to 'drivers/serial/sh-sci.c')
| -rw-r--r-- | drivers/serial/sh-sci.c | 62 |
1 files changed, 25 insertions, 37 deletions
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index f0658d2c45b..165fc010978 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -144,9 +144,9 @@ static void put_char(struct uart_port *port, char c) status = sci_in(port, SCxSR); } while (!(status & SCxSR_TDxE(port))); - sci_out(port, SCxTDR, c); sci_in(port, SCxSR); /* Dummy read */ sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port)); + sci_out(port, SCxTDR, c); spin_unlock_irqrestore(&port->lock, flags); } @@ -250,8 +250,7 @@ static inline void h8300_sci_disable(struct uart_port *port) } #endif -#if defined(SCI_ONLY) || defined(SCI_AND_SCIF) && \ - defined(__H8300H__) || defined(__H8300S__) +#if defined(__H8300H__) || defined(__H8300S__) static void sci_init_pins_sci(struct uart_port* port, unsigned int cflag) { int ch = (port->mapbase - SMR0) >> 3; @@ -285,11 +284,6 @@ static void sci_init_pins_irda(struct uart_port *port, unsigned int cflag) #define sci_init_pins_irda NULL #endif -#ifdef SCI_ONLY -#define sci_init_pins_scif NULL -#endif - -#if defined(SCIF_ONLY) || defined(SCI_AND_SCIF) #if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712) static void sci_init_pins_scif(struct uart_port* port, unsigned int cflag) { @@ -449,7 +443,6 @@ static inline int scif_rxroom(struct uart_port *port) return sci_in(port, SCFDR) & SCIF_RFDC_MASK; } #endif -#endif /* SCIF_ONLY || SCI_AND_SCIF */ static inline int sci_txroom(struct uart_port *port) { @@ -485,12 +478,10 @@ static void sci_transmit_chars(struct uart_port *port) return; } -#ifndef SCI_ONLY - if (port->type == PORT_SCIF) - count = scif_txroom(port); - else -#endif + if (port->type == PORT_SCI) count = sci_txroom(port); + else + count = scif_txroom(port); do { unsigned char c; @@ -519,12 +510,10 @@ static void sci_transmit_chars(struct uart_port *port) } else { ctrl = sci_in(port, SCSCR); -#if !defined(SCI_ONLY) - if (port->type == PORT_SCIF) { + if (port->type != PORT_SCI) { sci_in(port, SCxSR); /* Dummy read */ sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port)); } -#endif ctrl |= SCI_CTRL_FLAGS_TIE; sci_out(port, SCSCR, ctrl); @@ -547,12 +536,10 @@ static inline void sci_receive_chars(struct uart_port *port) return; while (1) { -#if !defined(SCI_ONLY) - if (port->type == PORT_SCIF) - count = scif_rxroom(port); - else -#endif + if (port->type == PORT_SCI) count = sci_rxroom(port); + else + count = scif_rxroom(port); /* Don't copy more bytes than there is room for in the buffer */ count = tty_buffer_request_room(tty, count); @@ -727,7 +714,7 @@ static inline int sci_handle_breaks(struct uart_port *port) #if defined(SCIF_ORER) /* XXX: Handle SCIF overrun error */ - if (port->type == PORT_SCIF && (sci_in(port, SCLSR) & SCIF_ORER) != 0) { + if (port->type != PORT_SCI && (sci_in(port, SCLSR) & SCIF_ORER) != 0) { sci_out(port, SCLSR, 0); if (tty_insert_flip_char(tty, 0, TTY_OVERRUN)) { copied++; @@ -810,26 +797,27 @@ static irqreturn_t sci_br_interrupt(int irq, void *ptr) static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr) { - unsigned short ssr_status, scr_status; - struct uart_port *port = ptr; + unsigned short ssr_status, scr_status; + struct uart_port *port = ptr; + irqreturn_t ret = IRQ_NONE; ssr_status = sci_in(port,SCxSR); scr_status = sci_in(port,SCSCR); /* Tx Interrupt */ - if ((ssr_status & 0x0020) && (scr_status & 0x0080)) - sci_tx_interrupt(irq, ptr); + if ((ssr_status & 0x0020) && (scr_status & SCI_CTRL_FLAGS_TIE)) + ret = sci_tx_interrupt(irq, ptr); /* Rx Interrupt */ - if ((ssr_status & 0x0002) && (scr_status & 0x0040)) - sci_rx_interrupt(irq, ptr); + if ((ssr_status & 0x0002) && (scr_status & SCI_CTRL_FLAGS_RIE)) + ret = sci_rx_interrupt(irq, ptr); /* Error Interrupt */ - if ((ssr_status & 0x0080) && (scr_status & 0x0400)) - sci_er_interrupt(irq, ptr); + if ((ssr_status & 0x0080) && (scr_status & SCI_CTRL_FLAGS_REIE)) + ret = sci_er_interrupt(irq, ptr); /* Break Interrupt */ - if ((ssr_status & 0x0010) && (scr_status & 0x0200)) - sci_br_interrupt(irq, ptr); + if ((ssr_status & 0x0010) && (scr_status & SCI_CTRL_FLAGS_REIE)) + ret = sci_br_interrupt(irq, ptr); - return IRQ_HANDLED; + return ret; } #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_HAVE_CLK) @@ -1054,10 +1042,8 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios, sci_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */ -#if !defined(SCI_ONLY) - if (port->type == PORT_SCIF) + if (port->type != PORT_SCI) sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST); -#endif smr_val = sci_in(port, SCSMR) & 3; if ((termios->c_cflag & CSIZE) == CS7) @@ -1099,6 +1085,7 @@ static const char *sci_type(struct uart_port *port) case PORT_SCI: return "sci"; case PORT_SCIF: return "scif"; case PORT_IRDA: return "irda"; + case PORT_SCIFA: return "scifa"; } return NULL; @@ -1126,6 +1113,7 @@ static void sci_config_port(struct uart_port *port, int flags) s->init_pins = sci_init_pins_sci; break; case PORT_SCIF: + case PORT_SCIFA: s->init_pins = sci_init_pins_scif; break; case PORT_IRDA: |