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-rw-r--r--Documentation/devicetree/bindings/mmc/sdhci-cadence.txt6
-rw-r--r--drivers/mmc/core/core.c12
-rw-r--r--drivers/mmc/core/sd.c12
-rw-r--r--drivers/mmc/host/sdhci-cadence.c1
-rw-r--r--drivers/mmc/host/sdhci.c33
5 files changed, 39 insertions, 25 deletions
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-cadence.txt b/Documentation/devicetree/bindings/mmc/sdhci-cadence.txt
index 750374fc9d94..c0f37cb41a9b 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-cadence.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-cadence.txt
@@ -1,7 +1,9 @@
* Cadence SD/SDIO/eMMC Host Controller
Required properties:
-- compatible: should be "cdns,sd4hc".
+- compatible: should be one of the following:
+ "cdns,sd4hc" - default of the IP
+ "socionext,uniphier-sd4hc" - for Socionext UniPhier SoCs
- reg: offset and length of the register set for the device.
- interrupts: a single interrupt specifier.
- clocks: phandle to the input clock.
@@ -19,7 +21,7 @@ if supported. See mmc.txt for details.
Example:
emmc: sdhci@5a000000 {
- compatible = "cdns,sd4hc";
+ compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
reg = <0x5a000000 0x400>;
interrupts = <0 78 4>;
clocks = <&clk 4>;
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 543eadd230e5..1076b9d89df3 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -496,8 +496,7 @@ static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
* Returns enum mmc_blk_status after checking errors.
*/
static enum mmc_blk_status mmc_wait_for_data_req_done(struct mmc_host *host,
- struct mmc_request *mrq,
- struct mmc_async_req *next_req)
+ struct mmc_request *mrq)
{
struct mmc_command *cmd;
struct mmc_context_info *context_info = &host->context_info;
@@ -507,7 +506,7 @@ static enum mmc_blk_status mmc_wait_for_data_req_done(struct mmc_host *host,
wait_event_interruptible(context_info->wait,
(context_info->is_done_rcv ||
context_info->is_new_req));
- context_info->is_waiting_last_req = false;
+
if (context_info->is_done_rcv) {
context_info->is_done_rcv = false;
cmd = mrq->cmd;
@@ -527,10 +526,9 @@ static enum mmc_blk_status mmc_wait_for_data_req_done(struct mmc_host *host,
__mmc_start_request(host, mrq);
continue; /* wait for done/new event again */
}
- } else if (context_info->is_new_req) {
- if (!next_req)
- return MMC_BLK_NEW_REQUEST;
}
+
+ return MMC_BLK_NEW_REQUEST;
}
mmc_retune_release(host);
return status;
@@ -660,7 +658,7 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host,
mmc_pre_req(host, areq->mrq);
if (host->areq) {
- status = mmc_wait_for_data_req_done(host, host->areq->mrq, areq);
+ status = mmc_wait_for_data_req_done(host, host->areq->mrq);
if (status == MMC_BLK_NEW_REQUEST) {
if (ret_stat)
*ret_stat = status;
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index deb90c2ff6b4..a614f37faf27 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -223,6 +223,7 @@ static int mmc_decode_scr(struct mmc_card *card)
static int mmc_read_ssr(struct mmc_card *card)
{
unsigned int au, es, et, eo;
+ u32 *raw_ssr;
int i;
if (!(card->csd.cmdclass & CCC_APP_SPEC)) {
@@ -231,14 +232,21 @@ static int mmc_read_ssr(struct mmc_card *card)
return 0;
}
- if (mmc_app_sd_status(card, card->raw_ssr)) {
+ raw_ssr = kmalloc(sizeof(card->raw_ssr), GFP_KERNEL);
+ if (!raw_ssr)
+ return -ENOMEM;
+
+ if (mmc_app_sd_status(card, raw_ssr)) {
pr_warn("%s: problem reading SD Status register\n",
mmc_hostname(card->host));
+ kfree(raw_ssr);
return 0;
}
for (i = 0; i < 16; i++)
- card->raw_ssr[i] = be32_to_cpu(card->raw_ssr[i]);
+ card->raw_ssr[i] = be32_to_cpu(raw_ssr[i]);
+
+ kfree(raw_ssr);
/*
* UNSTUFF_BITS only works with four u32s so we have to offset the
diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
index 1501cfdac473..4b0ecb981842 100644
--- a/drivers/mmc/host/sdhci-cadence.c
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -262,6 +262,7 @@ disable_clk:
}
static const struct of_device_id sdhci_cdns_match[] = {
+ { .compatible = "socionext,uniphier-sd4hc" },
{ .compatible = "cdns,sd4hc" },
{ /* sentinel */ }
};
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 111991e5b9a0..23909804ffb8 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1576,6 +1576,9 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
unsigned long flags;
u8 ctrl;
+ if (ios->power_mode == MMC_POWER_UNDEFINED)
+ return;
+
spin_lock_irqsave(&host->lock, flags);
if (host->flags & SDHCI_DEVICE_DEAD) {
@@ -2938,22 +2941,24 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
sdhci_init(host, 0);
- /* Force clock and power re-program */
- host->pwr = 0;
- host->clock = 0;
- mmc->ops->start_signal_voltage_switch(mmc, &mmc->ios);
- mmc->ops->set_ios(mmc, &mmc->ios);
+ if (mmc->ios.power_mode != MMC_POWER_UNDEFINED) {
+ /* Force clock and power re-program */
+ host->pwr = 0;
+ host->clock = 0;
+ mmc->ops->start_signal_voltage_switch(mmc, &mmc->ios);
+ mmc->ops->set_ios(mmc, &mmc->ios);
- if ((host_flags & SDHCI_PV_ENABLED) &&
- !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {
- spin_lock_irqsave(&host->lock, flags);
- sdhci_enable_preset_value(host, true);
- spin_unlock_irqrestore(&host->lock, flags);
- }
+ if ((host_flags & SDHCI_PV_ENABLED) &&
+ !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {
+ spin_lock_irqsave(&host->lock, flags);
+ sdhci_enable_preset_value(host, true);
+ spin_unlock_irqrestore(&host->lock, flags);
+ }
- if ((mmc->caps2 & MMC_CAP2_HS400_ES) &&
- mmc->ops->hs400_enhanced_strobe)
- mmc->ops->hs400_enhanced_strobe(mmc, &mmc->ios);
+ if ((mmc->caps2 & MMC_CAP2_HS400_ES) &&
+ mmc->ops->hs400_enhanced_strobe)
+ mmc->ops->hs400_enhanced_strobe(mmc, &mmc->ios);
+ }
spin_lock_irqsave(&host->lock, flags);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 20:44:31 +0000