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From: Baolin Wang <baolin.wang7@gmail.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: orsonzhai@gmail.com, zhang.lyra@gmail.com,
	baolin.wang7@gmail.com, arnd@arndb.de, linux-mmc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3 0/4] Introduce the request_atomic() for the host
Date: Thu, 19 Mar 2020 18:54:18 +0800	[thread overview]
Message-ID: <cover.1584615043.git.baolin.wang7@gmail.com> (raw)

This patch set introduces a new request_atomic() interface for the
MMC host controller, which is used to submit a request to host in
the atomic context, such as in the irq hard handler, to reduce the
request latency.

Any comments are welcome. Thanks.

Changes from v2:
 - Return busy flag if encountering unusual card busy state
 instead of polling in interrupt context.
 - Add a work for HSQ to try again in non-atomic context if the host
 returns busy flag.

Changes from v1:
 - Re-split the changes to make them more clear suggested by Ulf.
 - Factor out the auto CMD23 checking into a separate function.

Baolin Wang (4):
  mmc: host: Introduce the request_atomic() for the host
  mmc: host: sdhci: Implement the request_atomic() API
  mmc: host: hsq: Handle an unusual case of returing busy
  mmc: host: sdhci-sprd: Implement the request_atomic() API

 drivers/mmc/host/mmc_hsq.c    | 40 +++++++++++++++++++++++++-
 drivers/mmc/host/mmc_hsq.h    |  1 +
 drivers/mmc/host/sdhci-sprd.c | 23 +++++++++++++--
 drivers/mmc/host/sdhci.c      | 65 ++++++++++++++++++++++++++++++++-----------
 drivers/mmc/host/sdhci.h      |  4 ++-
 include/linux/mmc/host.h      |  3 ++
 6 files changed, 114 insertions(+), 22 deletions(-)

-- 
1.9.1


             reply	other threads:[~2020-03-19 10:55 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-19 10:54 Baolin Wang [this message]
2020-03-19 10:54 ` [PATCH v3 1/4] mmc: host: " Baolin Wang
2020-03-19 10:54 ` [PATCH v3 2/4] mmc: host: sdhci: Implement the request_atomic() API Baolin Wang
2020-03-19 10:54 ` [PATCH v3 3/4] mmc: host: hsq: Handle an unusual case of returing busy Baolin Wang
2020-04-02 10:45   ` Adrian Hunter
2020-04-03  1:21     ` Baolin Wang
2020-03-19 10:54 ` [PATCH v3 4/4] mmc: host: sdhci-sprd: Implement the request_atomic() API Baolin Wang

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