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| author | Cosmin Cojocar <cosmin.cojocar@gmail.com> | 2010-12-05 18:15:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-11 02:17:19 +0300 |
| commit | 1b41dbc1296269797efbb2b0837732b74de4731d (patch) | |
| tree | 96281f7869f5b98f7cd9082d52d781ed86b85ebb /drivers/serial | |
| parent | 5ac387d983149d4658aad17242d24eef85a43fa8 (diff) | |
| download | linux-1b41dbc1296269797efbb2b0837732b74de4731d.tar.xz | |
serial: omap-serial: Add support for kernel debugger
The kgdb invokes the poll_put_char and poll_get_char when communicating
with the host. This patch also changes the initialization order because the
kgdb will check at the very beginning, if there is a valid serial
driver.
Signed-off-by: Cosmin Cojocar <cosmin.cojocar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/Makefile | 2 | ||||
| -rw-r--r-- | drivers/serial/omap-serial.c | 38 |
2 files changed, 33 insertions, 7 deletions
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index f9b26dfb175d..8ea92e9c73b0 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_SERIAL_NETX) += netx-serial.o obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o obj-$(CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL) += nwpserial.o obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o +obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o obj-$(CONFIG_SERIAL_QE) += ucc_uart.o obj-$(CONFIG_SERIAL_TIMBERDALE) += timbuart.o @@ -89,6 +90,5 @@ obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o obj-$(CONFIG_SERIAL_MRST_MAX3110) += mrst_max3110.o obj-$(CONFIG_SERIAL_MFD_HSU) += mfd.o -obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o obj-$(CONFIG_SERIAL_IFX6X60) += ifx6x60.o obj-$(CONFIG_SERIAL_PCH_UART) += pch_uart.o diff --git a/drivers/serial/omap-serial.c b/drivers/serial/omap-serial.c index 14365f72b664..54239f5a9948 100644 --- a/drivers/serial/omap-serial.c +++ b/drivers/serial/omap-serial.c @@ -866,12 +866,6 @@ serial_omap_type(struct uart_port *port) return up->name; } -#ifdef CONFIG_SERIAL_OMAP_CONSOLE - -static struct uart_omap_port *serial_omap_console_ports[4]; - -static struct uart_driver serial_omap_reg; - #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) static inline void wait_for_xmitr(struct uart_omap_port *up) @@ -905,6 +899,34 @@ static inline void wait_for_xmitr(struct uart_omap_port *up) } } +#ifdef CONFIG_CONSOLE_POLL + +static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch) +{ + struct uart_omap_port *up = (struct uart_omap_port *)port; + wait_for_xmitr(up); + serial_out(up, UART_TX, ch); +} + +static int serial_omap_poll_get_char(struct uart_port *port) +{ + struct uart_omap_port *up = (struct uart_omap_port *)port; + unsigned int status = serial_in(up, UART_LSR); + + if (!(status & UART_LSR_DR)) + return NO_POLL_CHAR; + + return serial_in(up, UART_RX); +} + +#endif /* CONFIG_CONSOLE_POLL */ + +#ifdef CONFIG_SERIAL_OMAP_CONSOLE + +static struct uart_omap_port *serial_omap_console_ports[4]; + +static struct uart_driver serial_omap_reg; + static void serial_omap_console_putchar(struct uart_port *port, int ch) { struct uart_omap_port *up = (struct uart_omap_port *)port; @@ -1022,6 +1044,10 @@ static struct uart_ops serial_omap_pops = { .request_port = serial_omap_request_port, .config_port = serial_omap_config_port, .verify_port = serial_omap_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_put_char = serial_omap_poll_put_char, + .poll_get_char = serial_omap_poll_get_char, +#endif }; static struct uart_driver serial_omap_reg = { |