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author | Anton Vorontsov <anton.vorontsov@linaro.org> | 2012-12-11 22:15:57 -0800 |
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committer | Anton Vorontsov <anton.vorontsov@linaro.org> | 2012-12-11 22:15:57 -0800 |
commit | 76d8a23b127020472207b281427d3e9f4f1227e4 (patch) | |
tree | e14d7063d96d850fb259115d6fb08cbeb98ccf88 /drivers/tty/serial/pxa.c | |
parent | eba3b670a9166a91be5a11fe33290dca6b9457a2 (diff) | |
parent | 1ebaf4f4e6912199f8a4e30ba3ab55da2b71bcdf (diff) | |
download | op-kernel-dev-76d8a23b127020472207b281427d3e9f4f1227e4.zip op-kernel-dev-76d8a23b127020472207b281427d3e9f4f1227e4.tar.gz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
The merge is merely to fix conflicts before sending a pull request.
Conflicts:
drivers/power/ab8500_btemp.c
drivers/power/ab8500_charger.c
drivers/power/ab8500_fg.c
drivers/power/abx500_chargalg.c
drivers/power/max8925_power.c
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Diffstat (limited to 'drivers/tty/serial/pxa.c')
-rw-r--r-- | drivers/tty/serial/pxa.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c index 9033fc6..2764828 100644 --- a/drivers/tty/serial/pxa.c +++ b/drivers/tty/serial/pxa.c @@ -705,6 +705,57 @@ serial_pxa_console_write(struct console *co, const char *s, unsigned int count) clk_disable_unprepare(up->clk); } +#ifdef CONFIG_CONSOLE_POLL +/* + * Console polling routines for writing and reading from the uart while + * in an interrupt or debug context. + */ + +static int serial_pxa_get_poll_char(struct uart_port *port) +{ + struct uart_pxa_port *up = (struct uart_pxa_port *)port; + unsigned char lsr = serial_in(up, UART_LSR); + + while (!(lsr & UART_LSR_DR)) + lsr = serial_in(up, UART_LSR); + + return serial_in(up, UART_RX); +} + + +static void serial_pxa_put_poll_char(struct uart_port *port, + unsigned char c) +{ + unsigned int ier; + struct uart_pxa_port *up = (struct uart_pxa_port *)port; + + /* + * First save the IER then disable the interrupts + */ + ier = serial_in(up, UART_IER); + serial_out(up, UART_IER, UART_IER_UUE); + + wait_for_xmitr(up); + /* + * Send the character out. + * If a LF, also do CR... + */ + serial_out(up, UART_TX, c); + if (c == 10) { + wait_for_xmitr(up); + serial_out(up, UART_TX, 13); + } + + /* + * Finally, wait for transmitter to become empty + * and restore the IER + */ + wait_for_xmitr(up); + serial_out(up, UART_IER, ier); +} + +#endif /* CONFIG_CONSOLE_POLL */ + static int __init serial_pxa_console_setup(struct console *co, char *options) { @@ -759,6 +810,10 @@ struct uart_ops serial_pxa_pops = { .request_port = serial_pxa_request_port, .config_port = serial_pxa_config_port, .verify_port = serial_pxa_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = serial_pxa_get_poll_char, + .poll_put_char = serial_pxa_put_poll_char, +#endif }; static struct uart_driver serial_pxa_reg = { |