Re: [PATCH resend 2/2] mmc: sdhci: sdio-intel: Set SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON quirk

[Hans de Goede <hdegoede@redhat.com>]

Hi,

On 15-03-17 14:48, Ulf Hansson wrote:
> On 8 March 2017 at 09:49, Hans de Goede <hdegoede@redhat.com> wrote:
>> From: Dong Aisheng <b29396@freescale.com>
>>
>> SDIO cards may need clock to send the card interrupt to the host.
>> Set SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON to prevent the clock resource
>> being released.
>>
>> Hans de Goede:
>>
>> It looks like we still need this patch, on a cherrytrail tablet with
>> a RTL8723BS wifi chip, without this patch pinging the tablet results in:
>>
>> PING 192.168.1.14 (192.168.1.14) 56(84) bytes of data.
>> 64 bytes from 192.168.1.14: icmp_seq=1 ttl=64 time=78.6 ms
>> 64 bytes from 192.168.1.14: icmp_seq=2 ttl=64 time=1760 ms
>> 64 bytes from 192.168.1.14: icmp_seq=3 ttl=64 time=753 ms
>> 64 bytes from 192.168.1.14: icmp_seq=4 ttl=64 time=3.88 ms
>> 64 bytes from 192.168.1.14: icmp_seq=5 ttl=64 time=795 ms
>> 64 bytes from 192.168.1.14: icmp_seq=6 ttl=64 time=1841 ms
>> 64 bytes from 192.168.1.14: icmp_seq=7 ttl=64 time=810 ms
>> 64 bytes from 192.168.1.14: icmp_seq=8 ttl=64 time=1860 ms
>> 64 bytes from 192.168.1.14: icmp_seq=9 ttl=64 time=812 ms
>> 64 bytes from 192.168.1.14: icmp_seq=10 ttl=64 time=48.6 ms
>>
>> Where as with this patch I get:
>>
>> PING 192.168.1.14 (192.168.1.14) 56(84) bytes of data.
>> 64 bytes from 192.168.1.14: icmp_seq=1 ttl=64 time=3.96 ms
>> 64 bytes from 192.168.1.14: icmp_seq=2 ttl=64 time=1.97 ms
>> 64 bytes from 192.168.1.14: icmp_seq=3 ttl=64 time=17.2 ms
>> 64 bytes from 192.168.1.14: icmp_seq=4 ttl=64 time=2.46 ms
>> 64 bytes from 192.168.1.14: icmp_seq=5 ttl=64 time=2.83 ms
>> 64 bytes from 192.168.1.14: icmp_seq=6 ttl=64 time=1.40 ms
>> 64 bytes from 192.168.1.14: icmp_seq=7 ttl=64 time=2.10 ms
>> 64 bytes from 192.168.1.14: icmp_seq=8 ttl=64 time=1.40 ms
>> 64 bytes from 192.168.1.14: icmp_seq=9 ttl=64 time=2.04 ms
>> 64 bytes from 192.168.1.14: icmp_seq=10 ttl=64 time=1.40 ms
>>
>> Signed-off-by: Dong Aisheng <b29396@freescale.com>
>> [hdegoede@redhat.com: Updated commit msg with sdio wifi ping output]
>> [hdegoede@redhat.com: Add quirk to both acpi and pci intel-sdio entries]
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>> Note an alternative approach would be to add a new flag for this and do
>> a runtime_pm_get on sdio_irq_enable and runtime_pm_put on
>> sdio_irq_disable, that would safe some power if the sdio-driver properly
>> disables the irq when e.g. wifi is turned off, or an oob interrupt is
>> used.
>
> That approach seems more reasonable. Can you please try this instead?

Ok, done (just completed testing it) I will send a v2 of this set
with that approach right after this mail.

Regards,

Hans


>
> Kind regards
> Uffe
>
>> ---
>>  drivers/mmc/host/sdhci-acpi.c     | 1 +
>>  drivers/mmc/host/sdhci-pci-core.c | 1 +
>>  2 files changed, 2 insertions(+)
>>
>> diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
>> index 237f318..c107757 100644
>> --- a/drivers/mmc/host/sdhci-acpi.c
>> +++ b/drivers/mmc/host/sdhci-acpi.c
>> @@ -288,6 +288,7 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
>>  static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
>>         .quirks  = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
>>         .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
>> +                  SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
>>                    SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
>>         .caps    = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD |
>>                    MMC_CAP_WAIT_WHILE_BUSY,
>> diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
>> index 982b3e3..7cb54b0 100644
>> --- a/drivers/mmc/host/sdhci-pci-core.c
>> +++ b/drivers/mmc/host/sdhci-pci-core.c
>> @@ -498,6 +498,7 @@ static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
>>  static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
>>         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
>>         .quirks2        = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
>> +                       SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
>>                         SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
>>         .allow_runtime_pm = true,
>>         .probe_slot     = byt_sdio_probe_slot,
>> --
>> 2.9.3
>>