linux-kernel - Re: [PATCH V6 0/3] mmc: mmci: add busy detect for stm32 sdmmc variant

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Date:   Wed, 18 Sep 2019 11:33:08 +0200
From:   Ludovic BARRE <ludovic.barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <srinivas.kandagatla@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>
Subject: Re: [PATCH V6 0/3] mmc: mmci: add busy detect for stm32 sdmmc variant

hi Ulf

Just a "gentleman ping" about this series and
https://lkml.org/lkml/2019/9/4/747

Regards
Ludo

Le 9/5/19 à 2:21 PM, Ludovic Barre a écrit :
> From: Ludovic Barre <ludovic.barre@...com>
> 
> This patch series adds busy detect for stm32 sdmmc variant.
> Some adaptations are required:
> -On sdmmc the data timer is started on data transfert
> and busy state, so we must add hardware busy timeout support.
> -Add busy_complete callback at mmci_host_ops to allow to define
> a specific busy completion by variant.
> -Add sdmmc busy_complete callback.
> 
> V6:
> -mmci_start_command: set datatimer only on rsp_busy flag
> (remove host->mrq->data).
> -move max_busy_timeout in set_ios callback.
> -typo fix: err_msk, clks on one lines.
> 
> V5:
> -Replaces !cmd->data to !host->mrq->data to avoid overwrite
>   of datatimer register by the first command (cmd23, without data) of
>   SBC request.
> 
> V4:
> -Re-work with busy_complete callback
> -In series, move "mmc: mmci: add hardware busy timeout feature" in
> first to simplify busy_complete prototype with err_msk parameter.
> 
> V3:
> -rebase on latest mmc next
> -replace re-read by status parameter.
> 
> V2:
> -mmci_cmd_irq cleanup in separate patch.
> -simplify the busy_detect_flag exclude
> -replace sdmmc specific comment in
> "mmc: mmci: avoid fake busy polling in mmci_irq"
> to focus on common behavior
> 
> Ludovic Barre (3):
>    mmc: mmci: add hardware busy timeout feature
>    mmc: mmci: add busy_complete callback
>    mmc: mmci: sdmmc: add busy_complete callback
> 
>   drivers/mmc/host/mmci.c             | 183 +++++++++++++++++-----------
>   drivers/mmc/host/mmci.h             |   7 +-
>   drivers/mmc/host/mmci_stm32_sdmmc.c |  38 ++++++
>   3 files changed, 156 insertions(+), 72 deletions(-)
>