Kevin Liu 52983382c7 mmc: sdhci: enhance preset value function ... 4d55c5a1 ("mmc: sdhci: enable preset value after uhs initialization") added preset value support and enabled it by default during sd card init. Below are the enhancements introduced by this patch: 1. In current code, preset value is enabled after setting clock finished, which means the clock is manually set by driver firstly and then suddenly switched to preset value at this point. So the first setting is useless and unnecessary. What's more, the first clock setting may differ from the preset one. The better way is enable preset value just after switch to UHS mode so the preset value can take effect immediately. So move preset value enable from mmc_sd_init_card to sdhci_set_ios which will be called during set timing. 2. In current code, preset value is disabled at the beginning of mmc_attach_sd. It's too late since low freq (400khz) should be set in mmc_power_up. So move preset value disable to sdhci_set_ios which will be called during power up. 3. host->clock and ios->drv_type should also be updated according to the preset value if it's enabled. Current code missed this. 4. This patch also introduce a quirk to disable preset value in case preset value doesn't work. This patch has been verified on sdhci-pxav3 platform with both preset enabled and disabled. Signed-off-by: Kevin Liu <kliu5@marvell.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>		2013-02-24 14:37:11 -05:00
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acpi	…
asm-generic	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k	2013-01-23 13:31:15 -08:00
clocksource	…
crypto	…
drm	Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel	2013-01-11 07:52:48 +10:00
keys	…
linux	mmc: sdhci: enhance preset value function	2013-02-24 14:37:11 -05:00
math-emu	…
media	…
memory	…
misc	…
net	ipv4: Add a socket release callback for datagram sockets	2013-01-21 14:17:05 -05:00
pcmcia	…
ras	…
rdma	UAPI: Remove empty Kbuild files	2013-01-02 17:36:10 -08:00
rxrpc	…
scsi	…
sound	Merge remote-tracking branch 'asoc/fix/cs4271' into tmp	2013-01-10 12:22:11 +00:00
target	target: Introduce TCM_NO_SENSE	2013-01-10 20:06:08 -08:00
trace	Various bug fixes for ext4. Perhaps the most serious bug fixed is one	2013-01-02 09:57:34 -08:00
uapi	TTY/serial fixes for 3.8-rc4	2013-01-18 14:05:59 -08:00
video	Merge branch 'omap-for-v3.8/fixes-for-merge-window' into omap-for-v3.8/fixes-for-merge-window-v2	2012-12-16 11:28:10 -08:00
xen	Bugfixes:	2012-12-18 12:26:54 -08:00
Kbuild	UAPI: Remove empty Kbuild files	2013-01-02 17:36:10 -08:00