diff mbox

[Trusty/Utopic/Vivid/Wily] mmc: sdhci-pci: set the clear transfer mode register quirk for O2Micro

Message ID 1441949469-27283-1-git-send-email-adam.lee@canonical.com
State New
Headers show

Commit Message

Adam Lee Sept. 11, 2015, 5:31 a.m. UTC
BugLink: https://bugs.launchpad.net/bugs/1472843

This patch fixes MMC not working issue on O2Micro/BayHub Host, which
requires transfer mode register to be cleared when sending no DMA
command.

Signed-off-by: Peter Guo <peter.guo@bayhubtech.com>
Signed-off-by: Adam Lee <adam.lee@canonical.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
(cherry picked from commit 143b648ddf1583905fa15d32be27a31442fc7933)
Signed-off-by: Adam Lee <adam.lee@canonical.com>
---
 drivers/mmc/host/sdhci-pci.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Tim Gardner Sept. 11, 2015, 1:28 p.m. UTC | #1
On 09/10/2015 11:31 PM, Adam Lee wrote:
> BugLink: https://bugs.launchpad.net/bugs/1472843
> 
> This patch fixes MMC not working issue on O2Micro/BayHub Host, which
> requires transfer mode register to be cleared when sending no DMA
> command.
> 
> Signed-off-by: Peter Guo <peter.guo@bayhubtech.com>
> Signed-off-by: Adam Lee <adam.lee@canonical.com>
> Cc: stable <stable@vger.kernel.org>
> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
> (cherry picked from commit 143b648ddf1583905fa15d32be27a31442fc7933)
> Signed-off-by: Adam Lee <adam.lee@canonical.com>
> ---
>  drivers/mmc/host/sdhci-pci.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
> index 0955777..0339120 100644
> --- a/drivers/mmc/host/sdhci-pci.c
> +++ b/drivers/mmc/host/sdhci-pci.c
> @@ -517,6 +517,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
>  static const struct sdhci_pci_fixes sdhci_o2 = {
>  	.probe = sdhci_pci_o2_probe,
>  	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
> +	.quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
>  	.probe_slot = sdhci_pci_o2_probe_slot,
>  	.resume = sdhci_pci_o2_resume,
>  };
> 

How is this going to compile in Trusty and Utopic ?
SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD was not introduced until
3.19, nor do I see any backports of that commit in Trusty/Utopic(LTS).

rtg
Adam Lee Sept. 11, 2015, 2:30 p.m. UTC | #2
On Fri, Sep 11, 2015 at 07:28:52AM -0600, Tim Gardner wrote:
> How is this going to compile in Trusty and Utopic ?
> SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD was not introduced until
> 3.19, nor do I see any backports of that commit in Trusty/Utopic(LTS).
> 
> rtg

Sorry, my fault. Appended those two missed patches:
[Trusty][PATCH][Append 1/2] mmc: sdhci: Add a quirk for AMD SDHC transfer mode register need to be cleared for cmd without data
[Utopic][PATCH][Append 2/2] mmc: sdhci: Add a quirk for AMD SDHC transfer mode register need to be cleared for cmd without data

Great thanks for reviewing.
Tim Gardner Sept. 11, 2015, 4:44 p.m. UTC | #3
On 09/11/2015 08:30 AM, Adam Lee wrote:
> On Fri, Sep 11, 2015 at 07:28:52AM -0600, Tim Gardner wrote:
>> How is this going to compile in Trusty and Utopic ?
>> SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD was not introduced until
>> 3.19, nor do I see any backports of that commit in Trusty/Utopic(LTS).
>>
>> rtg
>
> Sorry, my fault. Appended those two missed patches:
> [Trusty][PATCH][Append 1/2] mmc: sdhci: Add a quirk for AMD SDHC transfer mode register need to be cleared for cmd without data
> [Utopic][PATCH][Append 2/2] mmc: sdhci: Add a quirk for AMD SDHC transfer mode register need to be cleared for cmd without data
>
> Great thanks for reviewing.
>


That looks better.
Brad Figg Sept. 14, 2015, 2:33 p.m. UTC | #4
On Fri, Sep 11, 2015 at 01:31:09PM +0800, Adam Lee wrote:
> BugLink: https://bugs.launchpad.net/bugs/1472843
> 
> This patch fixes MMC not working issue on O2Micro/BayHub Host, which
> requires transfer mode register to be cleared when sending no DMA
> command.
> 
> Signed-off-by: Peter Guo <peter.guo@bayhubtech.com>
> Signed-off-by: Adam Lee <adam.lee@canonical.com>
> Cc: stable <stable@vger.kernel.org>
> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
> (cherry picked from commit 143b648ddf1583905fa15d32be27a31442fc7933)
> Signed-off-by: Adam Lee <adam.lee@canonical.com>
> ---
>  drivers/mmc/host/sdhci-pci.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
> index 0955777..0339120 100644
> --- a/drivers/mmc/host/sdhci-pci.c
> +++ b/drivers/mmc/host/sdhci-pci.c
> @@ -517,6 +517,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
>  static const struct sdhci_pci_fixes sdhci_o2 = {
>  	.probe = sdhci_pci_o2_probe,
>  	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
> +	.quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
>  	.probe_slot = sdhci_pci_o2_probe_slot,
>  	.resume = sdhci_pci_o2_resume,
>  };
> -- 
> 2.5.1
> 
> 
> -- 
> kernel-team mailing list
> kernel-team@lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team
Brad Figg Sept. 15, 2015, 2:56 p.m. UTC | #5
Applied to the master-next branch of Trusty and Vivid and the
lts-backport-utopic-next branch of Trusty.
diff mbox

Patch

diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 0955777..0339120 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -517,6 +517,7 @@  static int jmicron_resume(struct sdhci_pci_chip *chip)
 static const struct sdhci_pci_fixes sdhci_o2 = {
 	.probe = sdhci_pci_o2_probe,
 	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+	.quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
 	.probe_slot = sdhci_pci_o2_probe_slot,
 	.resume = sdhci_pci_o2_resume,
 };