}
if ((caps2 & MMC_CAP2_HS400_ES) &&
- card->ext_csd.strobe_support &&
- (avail_type & EXT_CSD_CARD_TYPE_HS400))
+ card->ext_csd.strobe_support &&
+ (avail_type & EXT_CSD_CARD_TYPE_HS400))
avail_type |= EXT_CSD_CARD_TYPE_HS400ES;
card->ext_csd.hs_max_dtr = hs_max_dtr;
mmc_card_set_blockaddr(card);
}
- /*
- * Enhance Strobe is supported since v5.1 which rev should be
- * 8 but some eMMC devices can support it with rev 7. So handle
- * Enhance Strobe here.
- */
card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT];
-
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
mmc_select_card_type(card);
MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
+MMC_DEV_ATTR(ocr, "%08x\n", card->ocr);
static ssize_t mmc_fwrev_show(struct device *dev,
struct device_attribute *attr,
static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL);
+static ssize_t mmc_dsr_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct mmc_card *card = mmc_dev_to_card(dev);
+ struct mmc_host *host = card->host;
+
+ if (card->csd.dsr_imp && host->dsr_req)
+ return sprintf(buf, "0x%x\n", host->dsr);
+ else
+ /* return default DSR value */
+ return sprintf(buf, "0x%x\n", 0x404);
+}
+
+static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
+
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
&dev_attr_csd.attr,
&dev_attr_enhanced_area_size.attr,
&dev_attr_raw_rpmb_size_mult.attr,
&dev_attr_rel_sectors.attr,
+ &dev_attr_ocr.attr,
+ &dev_attr_dsr.attr,
NULL,
};
ATTRIBUTE_GROUPS(mmc_std);
break;
} else {
pr_warn("%s: switch to bus width %d failed\n",
- mmc_hostname(host), ext_csd_bits[idx]);
+ mmc_hostname(host), 1 << bus_width);
}
}
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
*/
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);
+ }
+
+ if (err)
+ pr_warn("%s: switch to high-speed failed, err:%d\n",
+ mmc_hostname(card->host), err);
return err;
}
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;
host->ios.bus_width == MMC_BUS_WIDTH_8))
return 0;
- if (host->caps & MMC_CAP_WAIT_WHILE_BUSY)
- send_status = false;
-
/* Switch card to HS mode */
val = EXT_CSD_TIMING_HS;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
max_dtr = card->ext_csd.hs_max_dtr;
mmc_set_clock(host, max_dtr);
- 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,
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);
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;
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);
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);
return err;
}
-static void mmc_select_driver_type(struct mmc_card *card)
-{
- int card_drv_type, drive_strength, drv_type;
-
- card_drv_type = card->ext_csd.raw_driver_strength |
- mmc_driver_type_mask(0);
-
- drive_strength = mmc_select_drive_strength(card,
- card->ext_csd.hs200_max_dtr,
- card_drv_type, &drv_type);
-
- card->drive_strength = drive_strength;
-
- if (drv_type)
- mmc_set_driver_type(card->host, drv_type);
-}
-
-/*
- * For device supporting HS200 mode, the following sequence
- * should be done before executing the tuning process.
- * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported)
- * 2. switch to HS200 mode
- * 3. set the clock to > 52Mhz and <=200MHz
- */
-static int mmc_select_hs200(struct mmc_card *card)
-{
- struct mmc_host *host = card->host;
- bool send_status = true;
- unsigned int old_timing;
- int err = -EINVAL;
- u8 val;
-
- if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V)
- err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
-
- if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V)
- err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
-
- /* If fails try again during next card power cycle */
- if (err)
- goto err;
-
- 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.
- */
- err = mmc_select_bus_width(card);
- if (!IS_ERR_VALUE(err)) {
- 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, 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:
- if (err)
- pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
- __func__, err);
- return err;
-}
-
static int mmc_select_hs400es(struct mmc_card *card)
{
struct mmc_host *host = card->host;
}
err = mmc_select_bus_width(card);
- if (IS_ERR_VALUE(err))
+ if (err < 0)
goto out_err;
/* Switch card to HS mode */
err = mmc_select_hs(card);
- if (err) {
- pr_err("%s: switch to high-speed failed, err:%d\n",
- mmc_hostname(host), err);
+ if (err)
goto out_err;
- }
err = mmc_switch_status(card);
if (err)
/* Switch card to DDR with strobe bit */
val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE;
-
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
val,
true, false, true);
if (err) {
pr_err("%s: switch to hs400es failed, err:%d\n",
- mmc_hostname(host), err);
+ mmc_hostname(host), err);
goto out_err;
}
return err;
}
+static void mmc_select_driver_type(struct mmc_card *card)
+{
+ int card_drv_type, drive_strength, drv_type;
+
+ card_drv_type = card->ext_csd.raw_driver_strength |
+ mmc_driver_type_mask(0);
+
+ drive_strength = mmc_select_drive_strength(card,
+ card->ext_csd.hs200_max_dtr,
+ card_drv_type, &drv_type);
+
+ card->drive_strength = drive_strength;
+
+ if (drv_type)
+ mmc_set_driver_type(card->host, drv_type);
+}
+
+/*
+ * For device supporting HS200 mode, the following sequence
+ * should be done before executing the tuning process.
+ * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported)
+ * 2. switch to HS200 mode
+ * 3. set the clock to > 52Mhz and <=200MHz
+ */
+static int mmc_select_hs200(struct mmc_card *card)
+{
+ struct mmc_host *host = card->host;
+ unsigned int old_timing, old_signal_voltage;
+ int err = -EINVAL;
+ u8 val;
+
+ old_signal_voltage = host->ios.signal_voltage;
+ if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V)
+ err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
+
+ if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V)
+ err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
+
+ /* If fails try again during next card power cycle */
+ if (err)
+ return err;
+
+ mmc_select_driver_type(card);
+
+ /*
+ * Set the bus width(4 or 8) with host's support and
+ * switch to HS200 mode if bus width is set successfully.
+ */
+ err = mmc_select_bus_width(card);
+ if (err > 0) {
+ 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, false, true);
+ if (err)
+ goto err;
+ old_timing = host->ios.timing;
+ mmc_set_timing(host, MMC_TIMING_MMC_HS200);
+
+ 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) {
+ /* fall back to the old signal voltage, if fails report error */
+ if (__mmc_set_signal_voltage(host, old_signal_voltage))
+ err = -EIO;
+
+ pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
+ __func__, err);
+ }
+ return err;
+}
+
/*
- * Activate High Speed or HS200 or HS400ES mode if supported.
+ * Activate High Speed, HS200 or HS400ES mode if supported.
*/
static int mmc_select_timing(struct mmc_card *card)
{
if (err && err != -EBADMSG)
return err;
- if (err) {
- pr_warn("%s: switch to %s failed\n",
- mmc_card_hs(card) ? "high-speed" :
- (mmc_card_hs200(card) ? "hs200" : ""),
- mmc_hostname(card->host));
- err = 0;
- }
-
bus_speed:
/*
* Set the bus speed to the selected bus timing.
* If timing is not selected, backward compatible is the default.
*/
mmc_set_bus_speed(card);
- return err;
+ return 0;
}
/*
if (err)
goto free_card;
- /* If doing byte addressing, check if required to do sector
+ /*
+ * If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
- if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
+ if (rocr & BIT(30))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
} else if (mmc_card_hs(card)) {
/* Select the desired bus width optionally */
err = mmc_select_bus_width(card);
- if (!IS_ERR_VALUE(err)) {
+ if (err > 0) {
err = mmc_select_hs_ddr(card);
if (err)
goto free_card;
*/
static int mmc_resume(struct mmc_host *host)
{
- int err = 0;
-
- if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) {
- err = _mmc_resume(host);
- pm_runtime_set_active(&host->card->dev);
- pm_runtime_mark_last_busy(&host->card->dev);
- }
pm_runtime_enable(&host->card->dev);
-
- return err;
+ return 0;
}
/*
{
int err;
- if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME)))
- return 0;
-
err = _mmc_resume(host);
- if (err)
- pr_err("%s: error %d doing aggressive resume\n",
+ if (err && err != -ENOMEDIUM)
+ pr_err("%s: error %d doing runtime resume\n",
mmc_hostname(host), err);
return 0;
projects / firefly-linux-kernel-4.4.55.git / commitdiff