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authorRaffaele Recalcati <raffaele.recalcati@bticino.it>2011-03-11 02:01:14 +0000
committerAndy Fleming <afleming@freescale.com>2011-04-13 07:09:04 -0500
commit5db2fe3ad9bdf4f32d72dbf2d3e3042bcd137a52 (patch)
treebc41107ea03285f1eb0a80ab63d89e984bb24262 /drivers
parent31cacbabf07ce00f5250b9826d5e48d4bbee1f94 (diff)
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mmc: trace added
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/mmc.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 64c8d56..36f80fa 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -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;