ide: move xfer mode tuning code to ide-xfer-mode.c

* Move xfer mode tuning code to ide-xfer-mode.c.

* Add CONFIG_IDE_XFER_MODE config option to be selected by host drivers
  that support xfer mode tuning.

* Add CONFIG_IDE_XFER_MODE=n static inline versions of ide_set_pio()
  and ide_set_xfer_rate().

* Make IDE_TIMINGS and BLK_DEV_IDEDMA config options select IDE_XFER_MODE,
  also add explicit selects for few host drivers that need it.

* Build/link ide-xfer-mode.o and ide-pio-blacklist.o (it is needed only
  by ide-xfer-mode.o) only if CONFIG_IDE_XFER_MODE=y.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index 83a970ee4bfe..d0976e6ee090 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -5,10 +5,10 @@
 EXTRA_CFLAGS                            += -Idrivers/ide
 
 ide-core-y += ide.o ide-ioctls.o ide-io.o ide-iops.o ide-lib.o ide-probe.o \
-              ide-taskfile.o ide-pm.o ide-park.o ide-pio-blacklist.o \
-              ide-sysfs.o ide-devsets.o
+              ide-taskfile.o ide-pm.o ide-park.o ide-sysfs.o ide-devsets.o
 
 # core IDE code
+ide-core-$(CONFIG_IDE_XFER_MODE)        += ide-pio-blacklist.o ide-xfer-mode.o
 ide-core-$(CONFIG_IDE_TIMINGS)          += ide-timings.o
 ide-core-$(CONFIG_IDE_ATAPI)            += ide-atapi.o
 ide-core-$(CONFIG_BLK_DEV_IDEPCI)       += setup-pci.o