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mmc: trace added

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Defining CONFIG_MMC_TRACE in the include board file it is possible to activate
a tracing support.
This code helps in case of eMMC hw failure or to investigate possible eMMC
initialization issues.

Signed-off-by: Raffaele Recalcati <raffaele.recalcati@bticino.it>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Raffaele Recalcati 2011-03-11 02:01:14 +00:00 committed by Andy Fleming
parent 31cacbabf0
commit 5db2fe3ad9
1 changed files with 57 additions and 0 deletions
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57
drivers/mmc/mmc.c
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@ -49,7 +49,60 @@ int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak,
int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
{
#ifdef CONFIG_MMC_TRACE
int ret;
int i;
u8 *ptr;
printf("CMD_SEND:%d\n", cmd->cmdidx);
printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
printf("\t\tFLAG\t\t\t %d\n", cmd->flags);
ret = mmc->send_cmd(mmc, cmd, data);
switch (cmd->resp_type) {
case MMC_RSP_NONE:
printf("\t\tMMC_RSP_NONE\n");
break;
case MMC_RSP_R1:
printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
cmd->response[0]);
break;
case MMC_RSP_R1b:
printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
cmd->response[0]);
break;
case MMC_RSP_R2:
printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
cmd->response[0]);
printf("\t\t \t\t 0x%08X \n",
cmd->response[1]);
printf("\t\t \t\t 0x%08X \n",
cmd->response[2]);
printf("\t\t \t\t 0x%08X \n",
cmd->response[3]);
printf("\n");
printf("\t\t\t\t\tDUMPING DATA\n");
for (i = 0; i < 4; i++) {
int j;
printf("\t\t\t\t\t%03d - ", i*4);
ptr = &cmd->response[i];
ptr += 3;
for (j = 0; j < 4; j++)
printf("%02X ", *ptr--);
printf("\n");
}
break;
case MMC_RSP_R3:
printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
cmd->response[0]);
break;
default:
printf("\t\tERROR MMC rsp not supported\n");
break;
}
return ret;
#else
return mmc->send_cmd(mmc, cmd, data);
#endif
}
int mmc_send_status(struct mmc *mmc, int timeout)
@ -80,6 +133,10 @@ int mmc_send_status(struct mmc *mmc, int timeout)
}
} while (timeout--);
#ifdef CONFIG_MMC_TRACE
status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
printf("CURR STATE:%d\n", status);
#endif
if (!timeout) {
printf("Timeout waiting card ready\n");
return TIMEOUT;