summaryrefslogtreecommitdiff
path: root/ANDROID_3.4.5/drivers/mmc/card/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'ANDROID_3.4.5/drivers/mmc/card/Kconfig')
-rw-r--r--ANDROID_3.4.5/drivers/mmc/card/Kconfig78
1 files changed, 78 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/drivers/mmc/card/Kconfig b/ANDROID_3.4.5/drivers/mmc/card/Kconfig
new file mode 100644
index 00000000..ebb4afe6
--- /dev/null
+++ b/ANDROID_3.4.5/drivers/mmc/card/Kconfig
@@ -0,0 +1,78 @@
+#
+# MMC/SD card drivers
+#
+
+comment "MMC/SD/SDIO Card Drivers"
+
+config MMC_BLOCK
+ tristate "MMC block device driver"
+ depends on BLOCK
+ default y
+ help
+ Say Y here to enable the MMC block device driver support.
+ This provides a block device driver, which you can use to
+ mount the filesystem. Almost everyone wishing MMC support
+ should say Y or M here.
+
+config MMC_BLOCK_MINORS
+ int "Number of minors per block device"
+ depends on MMC_BLOCK
+ range 4 256
+ default 8
+ help
+ Number of minors per block device. One is needed for every
+ partition on the disk (plus one for the whole disk).
+
+ Number of total MMC minors available is 256, so your number
+ of supported block devices will be limited to 256 divided
+ by this number.
+
+ Default is 8 to be backwards compatible with previous
+ hardwired device numbering.
+
+ If unsure, say 8 here.
+
+config MMC_BLOCK_BOUNCE
+ bool "Use bounce buffer for simple hosts"
+ depends on MMC_BLOCK
+ default y
+ help
+ SD/MMC is a high latency protocol where it is crucial to
+ send large requests in order to get high performance. Many
+ controllers, however, are restricted to continuous memory
+ (i.e. they can't do scatter-gather), something the kernel
+ rarely can provide.
+
+ Say Y here to help these restricted hosts by bouncing
+ requests back and forth from a large buffer. You will get
+ a big performance gain at the cost of up to 64 KiB of
+ physical memory.
+
+ If unsure, say Y here.
+
+config MMC_BLOCK_DEFERRED_RESUME
+ bool "Deferr MMC layer resume until I/O is requested"
+ depends on MMC_BLOCK
+ default n
+ help
+ Say Y here to enable deferred MMC resume until I/O
+ is requested. This will reduce overall resume latency and
+ save power when theres an SD card inserted but not being used.
+
+config SDIO_UART
+ tristate "SDIO UART/GPS class support"
+ help
+ SDIO function driver for SDIO cards that implements the UART
+ class, as well as the GPS class which appears like a UART.
+
+config MMC_TEST
+ tristate "MMC host test driver"
+ help
+ Development driver that performs a series of reads and writes
+ to a memory card in order to expose certain well known bugs
+ in host controllers. The tests are executed by writing to the
+ "test" file in debugfs under each card. Note that whatever is
+ on your card will be overwritten by these tests.
+
+ This driver is only of interest to those developing or
+ testing a host driver. Most people should say N here.