On Mon, Feb 21, 2011 at 11:09:05AM +0000, Russell King - ARM Linux wrote:

On Mon, Feb 21, 2011 at 11:46:08AM +0100, Wolfram Sang wrote:

quoted

quoted

quoted

quoted

-   if (cpu_is_mx35() || cpu_is_mx51())
+   if (cpu_is_mx53())
+           host->quirks |= SDHCI_QUIRK_FIX_NO_INT_IN_MULTI_BLK_IO;

Have you tried it doing it via IO-accessors?

Richard Zhu: This quirk is used to fix a mechanism problem in the MMC CMDs execution procedure.
It would be very abrupt and ugly, if the IO-accessors are added into these original procedures.

Please don't get it personal, but IMHO it is pretty ugly the way it is
now. This quirk is very imx-specific and calling something like
SDHCI_VENDOR_SPEC in sdhci.c looks clearly wrong to me. By the way, what
does this bit do, the description doesn't say so?

SDHCI_QUIRK_FIX_NO_INT_IN_MULTI_BLK_IO is rather too verbose.  Isn't
there a shorter version which could be used?  SDHCI_QUIRK_SDIO_MULTIBLK_INT
maybe?

As I understand, the non-SDIO part is handled here:

+       /*Set the CMD_TYPE of the CMD12, fix no INT in MULTI_BLK IO */
+       if (host->quirks & SDHCI_QUIRK_FIX_NO_INT_IN_MULTI_BLK_IO) {
+               if (cmd->opcode == 12)
+                       flags |= SDHCI_CMD_ABORTCMD;
+       }

But I'd really like to avoid the quirk bit. Maybe we'll get a better
idea once we understand what that magic bit actually does. For a start,
we might simply set SDHCI_QUIRK_NO_MULTIBLOCK for mx53 like we do for
other imx.

Regards,

   Wolfram

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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