From: Adrian Hunter <adrian.hunter-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Gregory CLEMENT
<gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Ulf Hansson <ulf.hansson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>,
Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>,
Sebastian Hesselbarth
<sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Thomas Petazzoni
<thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Nadav Haklai <nadavh-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Victor Gu <xigu-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Romain Perier
<romain.perier-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Omri Itach <omrii-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Marcin Wojtas <mw-nYOzD4b6Jr9Wk0Htik3J/w@public.gmane.org>,
Wilson Ding <dingwei-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Shadi Ammouri <shadi-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
Subject: Re: [PATCH 09/12] mmc: sdhci-xenon: add initial Xenon eMMC driver
Date: Tue, 14 Jun 2016 11:36:22 +0300 [thread overview]
Message-ID: <575FC206.4030903@intel.com> (raw)
In-Reply-To: <878ty8chdr.fsf-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
On 14/06/16 11:19, Gregory CLEMENT wrote:
> Hi Adrian,
>
> On mar., juin 14 2016, Adrian Hunter <adrian.hunter-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:
>
>> On 09/06/16 10:10, Gregory CLEMENT wrote:
>>> From: Victor Gu <xigu-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
>>>
>>> This path adds the driver for the Marvell Xenon eMMC host controller
>>> which supports eMMC 5.1, SD 3.0.
>>>
>>> However this driver supports only up to eMMC 5.0 since the command queue
>>> feature is not included (yet) in the driver.
>>>
>>> [gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org:
>>> - reformulate commit log
>>> - overload the sdhci_set_uhs_signaling function instead of using a quirk
>>> - fix a kconfig dependency
>>> - remove dead code]
>>>
>>> Signed-off-by: Victor Gu <xigu-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
>>> Signed-off-by: Gregory CLEMENT <gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
>>> ---
>>> drivers/mmc/host/Kconfig | 10 +
>>> drivers/mmc/host/Makefile | 1 +
>>> drivers/mmc/host/sdhci-xenon.c | 1164 ++++++++++++++++++++++++++++++++++++++++
>>> 3 files changed, 1175 insertions(+)
>>> create mode 100644 drivers/mmc/host/sdhci-xenon.c
>>>
>>
>> <SNIP>
>>
>>> diff --git a/drivers/mmc/host/sdhci-xenon.c b/drivers/mmc/host/sdhci-xenon.c
>>> new file mode 100644
>>> index 000000000000..43c06db95872
>>> --- /dev/null
>>> +++ b/drivers/mmc/host/sdhci-xenon.c
>>
>> <SNIP>
>>
>>> +static int sdhci_xenon_delay_adj_test(struct sdhci_host *host,
>>> + struct mmc_card *card, unsigned int delay,
>>> + bool invert, bool phase)
>>> +{
>>> + int ret;
>>> + struct mmc_card *oldcard;
>>> +
>>> + sdhci_xenon_set_fix_delay(host, delay, invert, phase);
>>> +
>>> + /*
>>> + * If the card is not yet associated to the host, we
>>> + * temporally do it
>>> + */
>>> + oldcard = card->host->card;
>>> + if (!oldcard)
>>> + card->host->card = card;
>>> + ret = card_alive(card);
>>
>> This looks like an abuse of bus_ops->alive(). You will need to get
>> agreement with Ulf how to handle this. I will wait for Ulf's comments
>> before reviewing this patch set further.
>
> Actually I modified this part of the driver to use
> bus_ops->alive(). Initially, the alive() code was more or less copied
> and paste from the mmc core with ugly include from mmc_ops.h and
> sdio_ops.h to make it work. I find it cleaner to directly access the
> alive() function.
>
> Could you explain why it is an abuse of bus_ops->alive()?
bus_ops->alive() is used to determine if the card is present and able to
respond. You seem to be using it for a different purpose. I will wait for
Ulf's comments.
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next prev parent reply other threads:[~2016-06-14 8:36 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-09 7:10 [PATCH 00/12] Add SDHCI Xenon driver Gregory CLEMENT
[not found] ` <1465456218-28354-1-git-send-email-gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2016-06-09 7:10 ` [PATCH 01/12] mmc: sdhci: add init_card callback to sdhci Gregory CLEMENT
2016-06-13 8:32 ` Adrian Hunter
2016-06-14 7:58 ` Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 10/12] arm64: dts: marvell: add eMMC support for Armada 37xx Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 02/12] mmc: sdhci_f_sdh30: restrict voltage_switch() callback to the 1.8V case Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 03/12] mmc: tegra: restrict the " Gregory CLEMENT
2016-06-09 9:54 ` Lucas Stach
2016-06-09 12:27 ` Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 04/12] mmc: sdhci: call voltage_switch callback also for the 3.3V case Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 05/12] mmc: sdhci: add a pre voltage switch callback function Gregory CLEMENT
[not found] ` <1465456218-28354-6-git-send-email-gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2016-06-13 8:46 ` Adrian Hunter
[not found] ` <575E72DC.5090604-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-06-13 14:04 ` Ziji Hu
[not found] ` <D7CF8A19-9181-4A97-90AF-AC5A6517CE2B-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2016-06-14 7:07 ` Adrian Hunter
2016-06-14 7:59 ` Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 06/12] mmc: sdhci: add delay adjust feature including phy reset Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 07/12] mmc: core: export the alive operation Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 08/12] dt-bindings: mmc: Add Xenon description Gregory CLEMENT
2016-06-10 14:16 ` Rob Herring
2016-06-14 8:02 ` Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 09/12] mmc: sdhci-xenon: add initial Xenon eMMC driver Gregory CLEMENT
2016-06-09 13:45 ` kbuild test robot
2016-06-09 14:33 ` Gregory CLEMENT
2016-06-09 14:20 ` kbuild test robot
2016-06-09 14:54 ` Gregory CLEMENT
[not found] ` <87r3c6mmyp.fsf-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2016-06-09 21:49 ` Arnd Bergmann
2016-06-14 6:52 ` Adrian Hunter
2016-06-14 8:19 ` Gregory CLEMENT
[not found] ` <878ty8chdr.fsf-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2016-06-14 8:36 ` Adrian Hunter [this message]
2016-06-22 11:04 ` Ulf Hansson
2016-06-09 7:10 ` [PATCH 11/12] arm64: dts: marvell: add SDIO support for Armada 37xx Gregory CLEMENT
2016-06-09 7:10 ` [PATCH 12/12] arm64: defconfig: Add Xenon sdhci Gregory CLEMENT
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