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Vijay Viswanath c0309b3803 mmc: sdhci-msm: Add sdhci msm register write APIs which wait for pwr irq
Register writes which change voltage of IO lines or turn the IO bus
on/off require controller to be ready before progressing further. When
the controller is ready, it will generate a power irq which needs to be
handled. The thread which initiated the register write should wait for
power irq to complete. This will be done through the new sdhc msm write
APIs which will check whether the particular write can trigger a power
irq and wait for it with a timeout if it is expected.
The SDHC core power control IRQ gets triggered when -
* There is a state change in power control bit (bit 0)
  of SDHCI_POWER_CONTROL register.
* There is a state change in 1.8V enable bit (bit 3) of
  SDHCI_HOST_CONTROL2 register.
* Bit 1 of SDHCI_SOFTWARE_RESET is set.

Also add support APIs which are used by sdhc msm write APIs to check
if power irq is expected to be generated and wait for the power irq
to come and complete if the irq is expected.

This patch requires CONFIG_MMC_SDHCI_IO_ACCESSORS to be enabled.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:45:59 +01:00
arch pci-v4.14-fixes-6 2017-10-28 10:53:24 -07:00
block bio_copy_user_iov(): don't ignore ->iov_offset 2017-10-10 23:55:14 -04:00
certs modsign: add markers to endif-statements in certs/Makefile 2017-07-14 11:01:37 +10:00
crypto Merge commit 'tags/keys-fixes-20171018' into fixes-v4.14-rc5 2017-10-19 12:28:38 +11:00
Documentation mmc: sdhci-msm: Enable delay circuit calibration clocks 2017-10-30 11:40:08 +01:00
drivers mmc: sdhci-msm: Add sdhci msm register write APIs which wait for pwr irq 2017-10-30 11:45:59 +01:00
firmware firmware: Restore support for built-in firmware 2017-09-16 10:58:48 -07:00
fs Various SMB3 fixes for 4.14 and stable 2017-10-28 08:39:35 -07:00
include mmc: rtsx: fix tuning fail on gen3 PCI-Express 2017-10-30 11:45:53 +01:00
init kbuild: Fix optimization level choice default 2017-10-07 20:08:05 +09:00
ipc fix a typo in put_compat_shm_info() 2017-09-25 20:41:46 -04:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-29 08:11:49 -07:00
lib assoc_array: Fix a buggy node-splitting case 2017-10-28 10:31:07 -07:00
mm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-21 22:44:48 -04:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-29 08:11:49 -07:00
samples Fix tracing sample code warning. 2017-10-27 20:35:31 -07:00
scripts Kbuild fixes for v4.14 (2nd) 2017-10-28 11:01:57 -07:00
security Revert "apparmor: add base infastructure for socket mediation" 2017-10-26 19:35:35 +02:00
sound ALSA: hda - fix headset mic problem for Dell machines with alc236 2017-10-24 14:32:24 +02:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-29 08:11:49 -07:00
usr ramfs: clarify help text that compression applies to ramfs as well as legacy ramdisk. 2017-07-06 16:24:30 -07:00
virt Revert "KVM: Don't accept obviously wrong gsi values via KVM_IRQFD" 2017-09-19 08:37:17 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: Add support to generate LLVM assembly files 2017-04-25 08:13:52 +09:00
.mailmap Update James Hogan's email address 2017-10-04 17:11:53 -07:00
COPYING
CREDITS selinux/stable-4.14 PR 20170831 2017-09-12 13:21:00 -07:00
Kbuild kbuild: Consolidate header generation from ASM offset information 2017-04-13 05:43:37 +09:00
Kconfig
MAINTAINERS Merge branch 'omap_hsmmc' into next 2017-10-30 11:36:42 +01:00
Makefile Linux 4.14-rc7 2017-10-29 13:58:38 -07:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.