linux-kernel - [PATCH v5 0/4] mmc: dw_mmc: fixes for suspend/resume on exynos

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Message-Id: <1376066000-5495-1-git-send-email-dianders@chromium.org>
Date:	Fri,  9 Aug 2013 09:33:16 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Chris Ball <cjb@...top.org>
Cc:	Jaehoon Chung <jh80.chung@...sung.com>,
	Seungwon Jeon <tgih.jun@...sung.com>,
	James Hogan <james.hogan@...tec.com>,
	Grant Grundler <grundler@...omium.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Abhilash Kesavan <a.kesavan@...sung.com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Olof Johansson <olof@...om.net>,
	Doug Anderson <dianders@...omium.org>,
	linux-samsung-soc@...r.kernel.org, linux-mmc@...r.kernel.org,
	Kukjin Kim <kgene.kim@...sung.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v5 0/4] mmc: dw_mmc: fixes for suspend/resume on exynos

This series of patches addresses some suspend/resume problems with
dw_mmc on exynos platforms, espeically exynos5420.  Since
suspend/resume is not fully working on ToT Linux (v3.11-rc4) on
exynos5250-snow, this series was tested against the current ToT
ChromeOS 3.8 tree.  I have confirmed basic booting and eMMC / SD card
usage (and compiling, honest!) against ToT Linux.

I have received confirmation from Samsung that the problem solved is a
silicon errata on exynos5420 and that this is a good fix.

Changes in v5:
- Remove force_clkinit as per Jaehoon.
- Update commit message to (hopefully) be clearer.
- Cleaned up dw_mci_exynos_resume_noirq() comment as per Seungwon.
- Don't memcpy dev_pm_ops structure, define a new one.

Changes in v4:
- Take Seungwon's suggestion and don't add any dw_mmc-pltfm code.

Changes in v3:
- Add freeze/thaw and poweroff/restore noirq entries.

Changes in v2:
- Fix typo (some -> come)
- Use ~0 instead of 0xFFFFFFFF; add comment about value
- Use suspend_noirq as per James Hogan.

Doug Anderson (4):
  mmc: dw_mmc: Invalidate cache of current_speed after suspend/resume
  mmc: dw_mmc: Add exynos resume_noirq callback to clear WAKEUP_INT
  mmc: dw_mmc: Always setup the bus after suspend/resume
  mmc: dw_mmc: Set timeout to max upon resume

 drivers/mmc/host/dw_mmc-exynos.c | 56 +++++++++++++++++++++++++++++++++++++++-
 drivers/mmc/host/dw_mmc.c        | 21 ++++++++++-----
 2 files changed, 69 insertions(+), 8 deletions(-)

-- 
1.8.3

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