Re: [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.zh...@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.


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