[U-Boot] [PATCH] fsl_esdhc: Add Auto command 12 interrupt bit detecting

[Zhang Haijun]

:-)

Thanks.

于 2013/11/1 15:45, Pantelis Antoniou 写道:
> Hi Zhang,
>
> I'll take a look at it over the weekend.
>
> Regards
>
> -- Pantelis
>
> On Nov 1, 2013, at 9:44 AM, Zhang Haijun wrote:
>
>> Hi,  Antonious
>>
>> How about this patch?
>> Could you give some advice?
>>
>> 于 2013/10/21 17:23, Zhang Haijun 写道:
>>> Hi, Babic
>>>
>>> Thanks.
>>>
>>> This patch is test on PPC.
>>>
>>>
>>> Regards,
>>> Haijun
>>>
>>>
>>> 于 2013/10/21 17:19, Stefano Babic 写道:
>>>> Hi,
>>>>
>>>> On 21/10/2013 10:23, Zhang Haijun wrote:
>>>>> Hi, all
>>>>>
>>>>> Who can give some comments?
>>>> I put Antonius in CC, he's the MMC custodian.
>>>>
>>>>
>>>> The driver is for both PPC and i.MX. On which platform do you test these
>>>> changes ?
>>>>
>>>> Best regards,
>>>> Stefano Babic
>>>>
>>>>> 于 2013/10/12 17:50, Haijun Zhang 写道:
>>>>>> When Auto-CMD12 is used, the corresponding interrupt and error bit
>>>>>> should be enabled and set to reflect auto cmd 12 error.
>>>>>> Also add other command error detecting, like command index error,
>>>>>> CRC error etc. Without this command error bit set system will hang
>>>>>> due to the while loop.
>>>>>>
>>>>>> Signed-off-by: Haijun Zhang <Haijun.Zhang at freescale.com>
>>>>>> ---
>>>>>>   drivers/mmc/fsl_esdhc.c | 10 +++++-----
>>>>>>   include/fsl_esdhc.h     |  3 ++-
>>>>>>   2 files changed, 7 insertions(+), 6 deletions(-)
>>>>>>
>>>>>> diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
>>>>>> index dc1d002..5aa592b 100644
>>>>>> --- a/drivers/mmc/fsl_esdhc.c
>>>>>> +++ b/drivers/mmc/fsl_esdhc.c
>>>>>> @@ -342,13 +342,13 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
>>>>>>   #endif
>>>>>>         /* Wait for the command to complete */
>>>>>> -    while (!(esdhc_read32(&regs->irqstat) & (IRQSTAT_CC | IRQSTAT_CTOE)))
>>>>>> +    while (!(esdhc_read32(&regs->irqstat) & (IRQSTAT_CC | CMD_ERR)))
>>>>>>           ;
>>>>>>         irqstat = esdhc_read32(&regs->irqstat);
>>>>>>         /* Reset CMD and DATA portions on error */
>>>>>> -    if (irqstat & (CMD_ERR | IRQSTAT_CTOE)) {
>>>>>> +    if (irqstat & CMD_ERR) {
>>>>>>           esdhc_write32(&regs->sysctl, esdhc_read32(&regs->sysctl) |
>>>>>>                     SYSCTL_RSTC);
>>>>>>           while (esdhc_read32(&regs->sysctl) & SYSCTL_RSTC)
>>>>>> @@ -363,12 +363,12 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
>>>>>>           }
>>>>>>       }
>>>>>>   -    if (irqstat & CMD_ERR)
>>>>>> -        return COMM_ERR;
>>>>>> -
>>>>>>       if (irqstat & IRQSTAT_CTOE)
>>>>>>           return TIMEOUT;
>>>>>>   +    if (irqstat & CMD_ERR)
>>>>>> +        return COMM_ERR;
>>>>>> +
>>>>>>       /* Workaround for ESDHC errata ENGcm03648 */
>>>>>>       if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
>>>>>>           int timeout = 2500;
>>>>>> diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h
>>>>>> index 67d6057..37dbe27 100644
>>>>>> --- a/include/fsl_esdhc.h
>>>>>> +++ b/include/fsl_esdhc.h
>>>>>> @@ -62,7 +62,8 @@
>>>>>>   #define IRQSTAT_TC        (0x00000002)
>>>>>>   #define IRQSTAT_CC        (0x00000001)
>>>>>>   -#define CMD_ERR        (IRQSTAT_CIE | IRQSTAT_CEBE | IRQSTAT_CCE)
>>>>>> +#define CMD_ERR        (IRQSTAT_CIE | IRQSTAT_CEBE | IRQSTAT_CCE | \
>>>>>> +                IRQSTAT_CTOE | IRQSTAT_AC12E)
>>>>>>   #define DATA_ERR    (IRQSTAT_DEBE | IRQSTAT_DCE | IRQSTAT_DTOE | \
>>>>>>                   IRQSTAT_DMAE)
>>>>>>   #define DATA_COMPLETE    (IRQSTAT_TC | IRQSTAT_DINT)
>> -- 
>> Thanks & Regards
>> Haijun.
>>
>>
>

-- 
Thanks & Regards
Haijun.