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Added Kernel logs Tracked-On: #40

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Added Kernel logs Tracked-On: #40

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1 change: 1 addition & 0 deletions drivers/mmc/core/core.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1477,6 +1477,7 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage)
if (err)
host->ios.signal_voltage = old_signal_voltage;

pr_info("############ %s: Inside Set signal voltage Err:%d \n",__func__, err);
return err;

}
Expand Down
6 changes: 6 additions & 0 deletions drivers/mmc/core/mmc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -997,6 +997,7 @@ static int mmc_select_bus_width(struct mmc_card *card)
unsigned idx, bus_width = 0;
int err = 0;

pr_info("############ In # %s: \n",__func__);
if (!mmc_can_ext_csd(card) ||
!(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA)))
return 0;
Expand Down Expand Up @@ -1046,6 +1047,7 @@ static int mmc_select_bus_width(struct mmc_card *card)
}
}

pr_info("############ %s: Bus width Err:%d \n",__func__);
return err;
}

Expand Down Expand Up @@ -1441,6 +1443,7 @@ static int mmc_select_hs200(struct mmc_card *card)
if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V)
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);

pr_info("############ %s: After Set signal voltage Err:%d \n",__func__, err);
/* If fails try again during next card power cycle */
if (err)
return err;
Expand All @@ -1452,6 +1455,7 @@ static int mmc_select_hs200(struct mmc_card *card)
* switch to HS200 mode if bus width is set successfully.
*/
err = mmc_select_bus_width(card);
pr_info("############ %s: After Set the bus width(4 or 8) with host's Err:%d \n",__func__, err);
if (err > 0) {
val = EXT_CSD_TIMING_HS200 |
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
Expand All @@ -1470,6 +1474,7 @@ static int mmc_select_hs200(struct mmc_card *card)
* tuning will fail and the result ends up the same.
*/
err = __mmc_switch_status(card, false);
pr_info("############ %s: After Switch Status Err:%d \n",__func__, err);

/*
* mmc_select_timing() assumes timing has not changed if
Expand All @@ -1479,6 +1484,7 @@ static int mmc_select_hs200(struct mmc_card *card)
mmc_set_timing(host, old_timing);
}
err:
pr_info("############ %s: Befor err: Err:%d \n",__func__, err);
if (err) {
/* fall back to the old signal voltage, if fails report error */
if (mmc_set_signal_voltage(host, old_signal_voltage))
Expand Down