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Commit a4080225 authored by Venkat Gopalakrishnan's avatar Venkat Gopalakrishnan Committed by Ulf Hansson
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mmc: cqhci: support for command queue enabled host 



This patch adds CMDQ support for command-queue compatible
hosts.

Command queue is added in eMMC-5.1 specification. This
enables the controller to process upto 32 requests at
a time.

Adrian Hunter contributed renaming to cqhci, recovery, suspend
and resume, cqhci_off, cqhci_wait_for_idle, and external timeout
handling.

Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
Signed-off-by: default avatarSujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: default avatarKonstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: default avatarVenkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: default avatarRitesh Harjani <riteshh@codeaurora.org>
Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Tested-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 1e8e55b6

drivers/mmc/host/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -857,6 +857,19 @@ config MMC_SUNXI 
	  This selects support for the SD/MMC Host Controller on

	  Allwinner sunxi SoCs.



config MMC_CQHCI

	tristate "Command Queue Host Controller Interface support"

	depends on HAS_DMA

	help

	  This selects the Command Queue Host Controller Interface (CQHCI)

	  support present in host controllers of Qualcomm Technologies, Inc

	  amongst others.

	  This controller supports eMMC devices with command queue support.



	  If you have a controller with this interface, say Y or M here.



	  If unsure, say N.



config MMC_TOSHIBA_PCI

	tristate "Toshiba Type A SD/MMC Card Interface Driver"

	depends on PCI

drivers/mmc/host/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ obj-$(CONFIG_MMC_SDHCI_ST) += sdhci-st.o 
obj-$(CONFIG_MMC_SDHCI_MICROCHIP_PIC32)	+= sdhci-pic32.o

obj-$(CONFIG_MMC_SDHCI_BRCMSTB)		+= sdhci-brcmstb.o

obj-$(CONFIG_MMC_SDHCI_OMAP)		+= sdhci-omap.o

obj-$(CONFIG_MMC_CQHCI)			+= cqhci.o



ifeq ($(CONFIG_CB710_DEBUG),y)

	CFLAGS-cb710-mmc	+= -DDEBUG