Op 05-05-10 16:59, Ben Dooks schreef:
> On Tue, May 04, 2010 at 11:43:22AM +0200, Maurus Cuelenaere wrote:
>
> The 'From:' line seems to have been lost?
>
Hmm that's odd, I'm sure it was in the patch though..
Perhaps Thunderbird/Gmail stripped it while sending..
To be clear: the original author of this patch (and PATCH 2/3) is
Thomas Abraham <thomas...@samsung.com>, not me.
I wrote PATCH 3/3.
>> The s3c6410 sdhci controller does not support the 'End' attribute and
>> NOP attribute in the same 8-Byte ADMA descriptor. This patch adds a
>> new quirk to identify sdhci host contollers with such behaviour.
>> In addition to this, for controllers using the new quirk, the last
>> entry in the ADMA descritor table is marked with the 'End' attribute
>> (instead of using a NOP descriptor with 'End' attribute).
>>
>> Signed-off-by: Thomas Abraham <thomas...@samsung.com>
>> Acked-by: Ben Dooks <ben-li...@fluff.org>
>> Signed-off-by: Maurus Cuelenaere <mcuelena...@gmail.com>
>> ---
>> drivers/mmc/host/sdhci.c | 20 +++++++++++++++-----
>> drivers/mmc/host/sdhci.h | 2 ++
>> 2 files changed, 17 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
>> index 9d4fdfa..db5d566 100644
>> --- a/drivers/mmc/host/sdhci.c
>> +++ b/drivers/mmc/host/sdhci.c
>> @@ -496,12 +496,22 @@ static int sdhci_adma_table_pre(struct sdhci_host
>> *host,
>> WARN_ON((desc - host->adma_desc) > (128 * 2 + 1) * 4);
>> }
>>
>> - /*
>> - * Add a terminating entry.
>> - */
>> + if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) {
>> + /*
>> + * Mark the last descriptor as the terminating descriptor
>> + */
>> + if (desc != host->adma_desc) {
>> + desc -= 8;
>> + desc[0] |= 0x2; /* end */
>> + }
>> + } else {
>> + /*
>> + * Add a terminating entry.
>> + */
>>
>> - /* nop, end, valid */
>> - sdhci_set_adma_desc(desc, 0, 0, 0x3);
>> + /* nop, end, valid */
>> + sdhci_set_adma_desc(desc, 0, 0, 0x3);
>> + }
>>
>> /*
>> * Resync align buffer as we might have changed it.
>> diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
>> index 842f46f..7ba0006 100644
>> --- a/drivers/mmc/host/sdhci.h
>> +++ b/drivers/mmc/host/sdhci.h
>> @@ -236,6 +236,8 @@ struct sdhci_host {
>> #define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23)
>> /* Controller uses SDCLK instead of TMCLK for data timeouts */
>> #define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<24)
>> +/* Controller cannot support End Attribute in NOP ADMA descriptor */
>> +#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<25)
>>
>> int irq; /* Device IRQ */
>> void __iomem * ioaddr; /* Mapped address */
>> --
>> 1.7.1
>>
>>
>> --
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>
--
Maurus Cuelenaere
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