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path: root/drivers/mmc/core/mmc.c
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Diffstat (limited to 'drivers/mmc/core/mmc.c')
-rw-r--r--drivers/mmc/core/mmc.c115
1 files changed, 47 insertions, 68 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 97a664f..490229e 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -965,6 +965,19 @@ static int mmc_select_bus_width(struct mmc_card *card)
return err;
}
+/* Caller must hold re-tuning */
+static int mmc_switch_status(struct mmc_card *card)
+{
+ u32 status;
+ int err;
+
+ err = mmc_send_status(card, &status);
+ if (err)
+ return err;
+
+ return mmc_switch_status_error(card->host, status);
+}
+
/*
* Switch to the high-speed mode
*/
@@ -975,9 +988,11 @@ static int mmc_select_hs(struct mmc_card *card)
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS,
card->ext_csd.generic_cmd6_time,
- true, true, true);
- if (!err)
+ true, false, true);
+ if (!err) {
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
+ err = mmc_switch_status(card);
+ }
return err;
}
@@ -1053,23 +1068,9 @@ static int mmc_select_hs_ddr(struct mmc_card *card)
return err;
}
-/* Caller must hold re-tuning */
-static int mmc_switch_status(struct mmc_card *card)
-{
- u32 status;
- int err;
-
- err = mmc_send_status(card, &status);
- if (err)
- return err;
-
- return mmc_switch_status_error(card->host, status);
-}
-
static int mmc_select_hs400(struct mmc_card *card)
{
struct mmc_host *host = card->host;
- bool send_status = true;
unsigned int max_dtr;
int err = 0;
u8 val;
@@ -1081,9 +1082,6 @@ static int mmc_select_hs400(struct mmc_card *card)
host->ios.bus_width == MMC_BUS_WIDTH_8))
return 0;
- if (host->caps & MMC_CAP_WAIT_WHILE_BUSY)
- send_status = false;
-
/* Reduce frequency to HS frequency */
max_dtr = card->ext_csd.hs_max_dtr;
mmc_set_clock(host, max_dtr);
@@ -1093,7 +1091,7 @@ static int mmc_select_hs400(struct mmc_card *card)
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, val,
card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err) {
pr_err("%s: switch to high-speed from hs200 failed, err:%d\n",
mmc_hostname(host), err);
@@ -1103,11 +1101,9 @@ static int mmc_select_hs400(struct mmc_card *card)
/* Set host controller to HS timing */
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
/* Switch card to DDR */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@@ -1126,7 +1122,7 @@ static int mmc_select_hs400(struct mmc_card *card)
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, val,
card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err) {
pr_err("%s: switch to hs400 failed, err:%d\n",
mmc_hostname(host), err);
@@ -1137,11 +1133,9 @@ static int mmc_select_hs400(struct mmc_card *card)
mmc_set_timing(host, MMC_TIMING_MMC_HS400);
mmc_set_bus_speed(card);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
return 0;
@@ -1159,14 +1153,10 @@ int mmc_hs200_to_hs400(struct mmc_card *card)
int mmc_hs400_to_hs200(struct mmc_card *card)
{
struct mmc_host *host = card->host;
- bool send_status = true;
unsigned int max_dtr;
int err;
u8 val;
- if (host->caps & MMC_CAP_WAIT_WHILE_BUSY)
- send_status = false;
-
/* Reduce frequency to HS */
max_dtr = card->ext_csd.hs_max_dtr;
mmc_set_clock(host, max_dtr);
@@ -1175,49 +1165,43 @@ int mmc_hs400_to_hs200(struct mmc_card *card)
val = EXT_CSD_TIMING_HS;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
val, card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err)
goto out_err;
mmc_set_timing(host, MMC_TIMING_MMC_DDR52);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
/* Switch HS DDR to HS */
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err)
goto out_err;
mmc_set_timing(host, MMC_TIMING_MMC_HS);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
/* Switch HS to HS200 */
val = EXT_CSD_TIMING_HS200 |
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
- val, card->ext_csd.generic_cmd6_time, true,
- send_status, true);
+ val, card->ext_csd.generic_cmd6_time,
+ true, false, true);
if (err)
goto out_err;
mmc_set_timing(host, MMC_TIMING_MMC_HS200);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
mmc_set_bus_speed(card);
@@ -1328,7 +1312,6 @@ static void mmc_select_driver_type(struct mmc_card *card)
static int mmc_select_hs200(struct mmc_card *card)
{
struct mmc_host *host = card->host;
- bool send_status = true;
unsigned int old_timing, old_signal_voltage;
int err = -EINVAL;
u8 val;
@@ -1346,9 +1329,6 @@ static int mmc_select_hs200(struct mmc_card *card)
mmc_select_driver_type(card);
- if (host->caps & MMC_CAP_WAIT_WHILE_BUSY)
- send_status = false;
-
/*
* Set the bus width(4 or 8) with host's support and
* switch to HS200 mode if bus width is set successfully.
@@ -1360,20 +1340,19 @@ static int mmc_select_hs200(struct mmc_card *card)
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, val,
card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err)
goto err;
old_timing = host->ios.timing;
mmc_set_timing(host, MMC_TIMING_MMC_HS200);
- if (!send_status) {
- err = mmc_switch_status(card);
- /*
- * mmc_select_timing() assumes timing has not changed if
- * it is a switch error.
- */
- if (err == -EBADMSG)
- mmc_set_timing(host, old_timing);
- }
+
+ err = mmc_switch_status(card);
+ /*
+ * mmc_select_timing() assumes timing has not changed if
+ * it is a switch error.
+ */
+ if (err == -EBADMSG)
+ mmc_set_timing(host, old_timing);
}
err:
if (err) {
generated by cgit v1.1 at 2024-06-17 02:17:44 +0000