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| author | Jarkko Nikula <jhnikula@gmail.com> | 2011-01-24 15:51:22 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-03 22:10:22 (GMT) |
| commit | 78841462d72fe7038cb7ea48adecc6fc395f2dc5 (patch) | |
| tree | 1722a48da7a6890b6d1c215f5cf6204580d2b459 /drivers/tty/serial/omap-serial.c | |
| parent | 364a6ece62455f669336e50d5b00f14ba650da93 (diff) | |
| download | linux-fsl-qoriq-78841462d72fe7038cb7ea48adecc6fc395f2dc5.tar.xz | |
serial: omap-serial: Enable the UART wake-up bits always
OMAP can do also dynamic idling so wake-up enable register should be set
also while system is running. If UART_OMAP_WER is not set, then for instance
the RX activity cannot wake up the UART port that is sleeping.
This RX wake-up feature was working when the 8250 driver was used instead
of omap-serial. Reason for this is that the 8250 doesn't set the
UART_OMAP_WER and then arch/arm/mach-omap2/pm34xx.c ends up saving and
restoring the reset default which is the same than value
OMAP_UART_WER_MOD_WKUP here.
Fix this by moving the conditional UART_OMAP_WER write from serial_omap_pm
into serial_omap_startup where wake-up bits are set unconditionally.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty/serial/omap-serial.c')
| -rw-r--r-- | drivers/tty/serial/omap-serial.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 699b344..7635379 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -520,6 +520,9 @@ static int serial_omap_startup(struct uart_port *port) up->ier = UART_IER_RLSI | UART_IER_RDI; serial_out(up, UART_IER, up->ier); + /* Enable module level wake up */ + serial_out(up, UART_OMAP_WER, OMAP_UART_WER_MOD_WKUP); + up->port_activity = jiffies; return 0; } @@ -827,9 +830,6 @@ serial_omap_pm(struct uart_port *port, unsigned int state, serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); serial_out(up, UART_EFR, efr); serial_out(up, UART_LCR, 0); - /* Enable module level wake up */ - serial_out(up, UART_OMAP_WER, - (state != 0) ? OMAP_UART_WER_MOD_WKUP : 0); } static void serial_omap_release_port(struct uart_port *port) |