X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fserial%2Fserial_txx9.c;h=7ad21925869a0550465b56bac0e5a7c771f2fb31;hb=61243d8e79de67d703b192fae2c4ab80fc0fac34;hp=509ace7e6881a84cf88f0329247aea4a308add43;hpb=5cb69bcacea70024252138a9cb4229a142a93389;p=linux-2.6-omap-h63xx.git diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c index 509ace7e688..7ad21925869 100644 --- a/drivers/serial/serial_txx9.c +++ b/drivers/serial/serial_txx9.c @@ -15,31 +15,6 @@ * published by the Free Software Foundation. * * Serial driver for TX3927/TX4927/TX4925/TX4938 internal SIO controller - * - * Revision History: - * 0.30 Initial revision. (Renamed from serial_txx927.c) - * 0.31 Use save_flags instead of local_irq_save. - * 0.32 Support SCLK. - * 0.33 Switch TXX9_TTY_NAME by CONFIG_SERIAL_TXX9_STDSERIAL. - * Support TIOCSERGETLSR. - * 0.34 Support slow baudrate. - * 0.40 Merge codes from mainstream kernel (2.4.22). - * 0.41 Fix console checking in rs_shutdown_port(). - * Disable flow-control in serial_console_write(). - * 0.42 Fix minor compiler warning. - * 1.00 Kernel 2.6. Converted to new serial core (based on 8250.c). - * 1.01 Set fifosize to make tx_empry called properly. - * Use standard uart_get_divisor. - * 1.02 Cleanup. (import 8250.c changes) - * 1.03 Fix low-latency mode. (import 8250.c changes) - * 1.04 Remove usage of deprecated functions, cleanup. - * 1.05 More strict check in verify_port. Cleanup. - * 1.06 Do not insert a char caused previous overrun. - * Fix some spin_locks. - * Do not call uart_add_one_port for absent ports. - * 1.07 Use CONFIG_SERIAL_TXX9_NR_UARTS. Cleanup. - * 1.08 Use platform_device. - * Fix and cleanup suspend/resume/initialization codes. */ #if defined(CONFIG_SERIAL_TXX9_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -50,19 +25,15 @@ #include #include #include -#include #include #include #include -#include -#include #include #include -#include #include -static char *serial_version = "1.08"; +static char *serial_version = "1.11"; static char *serial_name = "TX39/49 Serial driver"; #define PASS_LIMIT 256 @@ -70,13 +41,14 @@ static char *serial_name = "TX39/49 Serial driver"; #if !defined(CONFIG_SERIAL_TXX9_STDSERIAL) /* "ttyS" is used for standard serial driver */ #define TXX9_TTY_NAME "ttyTX" -#define TXX9_TTY_MINOR_START (64 + 64) /* ttyTX0(128), ttyTX1(129) */ +#define TXX9_TTY_MINOR_START 196 +#define TXX9_TTY_MAJOR 204 #else /* acts like standard serial driver */ #define TXX9_TTY_NAME "ttyS" #define TXX9_TTY_MINOR_START 64 -#endif #define TXX9_TTY_MAJOR TTY_MAJOR +#endif /* flag aliases */ #define UPF_TXX9_HAVE_CTS_LINE UPF_BUGGY_UART @@ -92,8 +64,6 @@ static char *serial_name = "TX39/49 Serial driver"; */ #define UART_NR CONFIG_SERIAL_TXX9_NR_UARTS -#define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8) - struct uart_txx9_port { struct uart_port port; /* No additional info for now */ @@ -460,8 +430,10 @@ static unsigned int serial_txx9_get_mctrl(struct uart_port *port) struct uart_txx9_port *up = (struct uart_txx9_port *)port; unsigned int ret; - ret = ((sio_in(up, TXX9_SIFLCR) & TXX9_SIFLCR_RTSSC) ? 0 : TIOCM_RTS) - | ((sio_in(up, TXX9_SICISR) & TXX9_SICISR_CTSS) ? 0 : TIOCM_CTS); + /* no modem control lines */ + ret = TIOCM_CAR | TIOCM_DSR; + ret |= (sio_in(up, TXX9_SIFLCR) & TXX9_SIFLCR_RTSSC) ? 0 : TIOCM_RTS; + ret |= (sio_in(up, TXX9_SICISR) & TXX9_SICISR_CTSS) ? 0 : TIOCM_CTS; return ret; } @@ -581,6 +553,12 @@ serial_txx9_set_termios(struct uart_port *port, struct ktermios *termios, unsigned long flags; unsigned int baud, quot; + /* + * We don't support modem control lines. + */ + termios->c_cflag &= ~(HUPCL | CMSPAR); + termios->c_cflag |= CLOCAL; + cval = sio_in(up, TXX9_SILCR); /* byte size and parity */ cval &= ~TXX9_SILCR_UMODE_MASK; @@ -679,7 +657,15 @@ static void serial_txx9_pm(struct uart_port *port, unsigned int state, unsigned int oldstate) { - if (state == 0) + /* + * If oldstate was -1 this is called from + * uart_configure_port(). In this case do not initialize the + * port now, because the port was already initialized (for + * non-console port) or should not be initialized here (for + * console port). If we initialized the port here we lose + * serial console settings. + */ + if (state == 0 && oldstate != -1) serial_txx9_initialize(port); } @@ -772,21 +758,6 @@ static void serial_txx9_config_port(struct uart_port *port, int uflags) serial_txx9_initialize(port); } -static int -serial_txx9_verify_port(struct uart_port *port, struct serial_struct *ser) -{ - unsigned long new_port = ser->port; - if (HIGH_BITS_OFFSET) - new_port += (unsigned long)ser->port_high << HIGH_BITS_OFFSET; - if (ser->type != port->type || - ser->irq != port->irq || - ser->io_type != port->iotype || - new_port != port->iobase || - (unsigned long)ser->iomem_base != port->mapbase) - return -EINVAL; - return 0; -} - static const char * serial_txx9_type(struct uart_port *port) { @@ -810,7 +781,6 @@ static struct uart_ops serial_txx9_pops = { .release_port = serial_txx9_release_port, .request_port = serial_txx9_request_port, .config_port = serial_txx9_config_port, - .verify_port = serial_txx9_verify_port, }; static struct uart_txx9_port serial_txx9_ports[UART_NR]; @@ -966,7 +936,8 @@ int __init early_serial_txx9_setup(struct uart_port *port) serial_txx9_ports[port->line].port = *port; serial_txx9_ports[port->line].port.ops = &serial_txx9_pops; - serial_txx9_ports[port->line].port.flags |= UPF_BOOT_AUTOCONF; + serial_txx9_ports[port->line].port.flags |= + UPF_BOOT_AUTOCONF | UPF_FIXED_PORT; return 0; } @@ -1011,7 +982,8 @@ static int __devinit serial_txx9_register_port(struct uart_port *port) uart->port.irq = port->irq; uart->port.uartclk = port->uartclk; uart->port.iotype = port->iotype; - uart->port.flags = port->flags | UPF_BOOT_AUTOCONF; + uart->port.flags = port->flags + | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT; uart->port.mapbase = port->mapbase; if (port->dev) uart->port.dev = port->dev; @@ -1067,8 +1039,9 @@ static int __devinit serial_txx9_probe(struct platform_device *dev) ret = serial_txx9_register_port(&port); if (ret < 0) { dev_err(&dev->dev, "unable to register port at index %d " - "(IO%x MEM%lx IRQ%d): %d\n", i, - p->iobase, p->mapbase, p->irq, ret); + "(IO%x MEM%llx IRQ%d): %d\n", i, + p->iobase, (unsigned long long)p->mapbase, + p->irq, ret); } } return 0;