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spi: omap2_mcspi supports wake events 

Currently mcspi wake-ups are not enabled.  This might cause cases where
OMAP is not waking up on mcspi events.

Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jouni Hogander 2009-07-29 15:02:11 -07:00 committed by Linus Torvalds
parent c42b110cae
commit ddb22195cb
1 changed files with 9 additions and 2 deletions
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11
drivers/spi/omap2_mcspi.c
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@ -59,6 +59,8 @@
/* per-register bitmasks: */
#define OMAP2_MCSPI_SYSCONFIG_SMARTIDLE (2 << 3)
#define OMAP2_MCSPI_SYSCONFIG_ENAWAKEUP (1 << 2)
#define OMAP2_MCSPI_SYSCONFIG_AUTOIDLE (1 << 0)
#define OMAP2_MCSPI_SYSCONFIG_SOFTRESET (1 << 1)
@ -90,6 +92,7 @@
#define OMAP2_MCSPI_CHCTRL_EN (1 << 0)
#define OMAP2_MCSPI_WAKEUPENABLE_WKEN (1 << 0)
/* We have 2 DMA channels per CS, one for RX and one for TX */
struct omap2_mcspi_dma {
@ -873,8 +876,12 @@ static int __init omap2_mcspi_reset(struct omap2_mcspi *mcspi)
} while (!(tmp & OMAP2_MCSPI_SYSSTATUS_RESETDONE));
mcspi_write_reg(master, OMAP2_MCSPI_SYSCONFIG,
/* (3 << 8) | (2 << 3) | */
OMAP2_MCSPI_SYSCONFIG_AUTOIDLE);
OMAP2_MCSPI_SYSCONFIG_AUTOIDLE |
OMAP2_MCSPI_SYSCONFIG_ENAWAKEUP |
OMAP2_MCSPI_SYSCONFIG_SMARTIDLE);
mcspi_write_reg(master, OMAP2_MCSPI_WAKEUPENABLE,
OMAP2_MCSPI_WAKEUPENABLE_WKEN);
omap2_mcspi_set_master_mode(master);