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authorLinus Torvalds <torvalds@linux-foundation.org>2016-11-11 16:23:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-11-11 16:23:14 -0800
commitb8b73df3450c9dc953e2bfb4d1f03a4cdd7d8dc6 (patch)
tree5b62bf95e7cc2324b1ec77a719d88388f8bc498f
parent5c03b53cb7386a5a9ee16b50de4d77d5cd06a438 (diff)
parentf91346e8b5f46aaf12f1df26e87140584ffd1b3f (diff)
downloadlinux-sh-b8b73df3450c9dc953e2bfb4d1f03a4cdd7d8dc6.tar.gz
Merge tag 'mmc-v4.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson: "MMC core: - Fix mmc card initialization for hosts not supporting HW busy detection - Fix mmc_test for sending commands during non-blocking write MMC host: - mxs: Avoid using an uninitialized - sdhci: Restore enhanced strobe setting during runtime resume - sdhci: Fix a couple of reset related issues - dw_mmc: Fix a reset controller issue" * tag 'mmc-v4.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: mxs: Initialize the spinlock prior to using it mmc: mmc: Use 500ms as the default generic CMD6 timeout mmc: mmc_test: Fix "Commands during non-blocking write" tests mmc: sdhci: Fix missing enhanced strobe setting during runtime resume mmc: sdhci: Reset cmd and data circuits after tuning failure mmc: sdhci: Fix unexpected data interrupt handling mmc: sdhci: Fix CMD line reset interfering with ongoing data transfer mmc: dw_mmc: add the "reset" as name of reset controller Documentation: synopsys-dw-mshc: add binding for reset-names
-rw-r--r--Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt5
-rw-r--r--drivers/mmc/card/mmc_test.c8
-rw-r--r--drivers/mmc/core/mmc.c3
-rw-r--r--drivers/mmc/host/dw_mmc.c2
-rw-r--r--drivers/mmc/host/mxs-mmc.c4
-rw-r--r--drivers/mmc/host/sdhci.c36
6 files changed, 41 insertions, 17 deletions
diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
index 4e00e859e885..bfa461aaac99 100644
--- a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
+++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
@@ -43,6 +43,9 @@ Optional properties:
reset signal present internally in some host controller IC designs.
See Documentation/devicetree/bindings/reset/reset.txt for details.
+* reset-names: request name for using "resets" property. Must be "reset".
+ (It will be used together with "resets" property.)
+
* clocks: from common clock binding: handle to biu and ciu clocks for the
bus interface unit clock and the card interface unit clock.
@@ -103,6 +106,8 @@ board specific portions as listed below.
interrupts = <0 75 0>;
#address-cells = <1>;
#size-cells = <0>;
+ resets = <&rst 20>;
+ reset-names = "reset";
};
[board specific internal DMA resources]
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 5a8dc5a76e0d..3678220964fe 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -2347,7 +2347,7 @@ static int mmc_test_ongoing_transfer(struct mmc_test_card *test,
struct mmc_test_req *rq = mmc_test_req_alloc();
struct mmc_host *host = test->card->host;
struct mmc_test_area *t = &test->area;
- struct mmc_async_req areq;
+ struct mmc_test_async_req test_areq = { .test = test };
struct mmc_request *mrq;
unsigned long timeout;
bool expired = false;
@@ -2363,8 +2363,8 @@ static int mmc_test_ongoing_transfer(struct mmc_test_card *test,
mrq->sbc = &rq->sbc;
mrq->cap_cmd_during_tfr = true;
- areq.mrq = mrq;
- areq.err_check = mmc_test_check_result_async;
+ test_areq.areq.mrq = mrq;
+ test_areq.areq.err_check = mmc_test_check_result_async;
mmc_test_prepare_mrq(test, mrq, t->sg, t->sg_len, dev_addr, t->blocks,
512, write);
@@ -2378,7 +2378,7 @@ static int mmc_test_ongoing_transfer(struct mmc_test_card *test,
/* Start ongoing data request */
if (use_areq) {
- mmc_start_req(host, &areq, &ret);
+ mmc_start_req(host, &test_areq.areq, &ret);
if (ret)
goto out_free;
} else {
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 39fc5b2b96c5..df19777068a6 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -26,6 +26,8 @@
#include "mmc_ops.h"
#include "sd_ops.h"
+#define DEFAULT_CMD6_TIMEOUT_MS 500
+
static const unsigned int tran_exp[] = {
10000, 100000, 1000000, 10000000,
0, 0, 0, 0
@@ -571,6 +573,7 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
card->erased_byte = 0x0;
/* eMMC v4.5 or later */
+ card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS;
if (card->ext_csd.rev >= 6) {
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 4fcbc4012ed0..50a674be6655 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2940,7 +2940,7 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
return ERR_PTR(-ENOMEM);
/* find reset controller when exist */
- pdata->rstc = devm_reset_control_get_optional(dev, NULL);
+ pdata->rstc = devm_reset_control_get_optional(dev, "reset");
if (IS_ERR(pdata->rstc)) {
if (PTR_ERR(pdata->rstc) == -EPROBE_DEFER)
return ERR_PTR(-EPROBE_DEFER);
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index d839147e591d..44ecebd1ea8c 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -661,13 +661,13 @@ static int mxs_mmc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mmc);
+ spin_lock_init(&host->lock);
+
ret = devm_request_irq(&pdev->dev, irq_err, mxs_mmc_irq_handler, 0,
dev_name(&pdev->dev), host);
if (ret)
goto out_free_dma;
- spin_lock_init(&host->lock);
-
ret = mmc_add_host(mmc);
if (ret)
goto out_free_dma;
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 71654b90227f..42ef3ebb1d8c 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2086,6 +2086,10 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
if (!host->tuning_done) {
pr_info(DRIVER_NAME ": Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock\n");
+
+ sdhci_do_reset(host, SDHCI_RESET_CMD);
+ sdhci_do_reset(host, SDHCI_RESET_DATA);
+
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
ctrl &= ~SDHCI_CTRL_TUNED_CLK;
ctrl &= ~SDHCI_CTRL_EXEC_TUNING;
@@ -2286,10 +2290,8 @@ static bool sdhci_request_done(struct sdhci_host *host)
for (i = 0; i < SDHCI_MAX_MRQS; i++) {
mrq = host->mrqs_done[i];
- if (mrq) {
- host->mrqs_done[i] = NULL;
+ if (mrq)
break;
- }
}
if (!mrq) {
@@ -2320,6 +2322,17 @@ static bool sdhci_request_done(struct sdhci_host *host)
* upon error conditions.
*/
if (sdhci_needs_reset(host, mrq)) {
+ /*
+ * Do not finish until command and data lines are available for
+ * reset. Note there can only be one other mrq, so it cannot
+ * also be in mrqs_done, otherwise host->cmd and host->data_cmd
+ * would both be null.
+ */
+ if (host->cmd || host->data_cmd) {
+ spin_unlock_irqrestore(&host->lock, flags);
+ return true;
+ }
+
/* Some controllers need this kick or reset won't work here */
if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)
/* This is to force an update */
@@ -2327,10 +2340,8 @@ static bool sdhci_request_done(struct sdhci_host *host)
/* Spec says we should do both at the same time, but Ricoh
controllers do not like that. */
- if (!host->cmd)
- sdhci_do_reset(host, SDHCI_RESET_CMD);
- if (!host->data_cmd)
- sdhci_do_reset(host, SDHCI_RESET_DATA);
+ sdhci_do_reset(host, SDHCI_RESET_CMD);
+ sdhci_do_reset(host, SDHCI_RESET_DATA);
host->pending_reset = false;
}
@@ -2338,6 +2349,8 @@ static bool sdhci_request_done(struct sdhci_host *host)
if (!sdhci_has_requests(host))
sdhci_led_deactivate(host);
+ host->mrqs_done[i] = NULL;
+
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
@@ -2512,9 +2525,6 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
if (!host->data) {
struct mmc_command *data_cmd = host->data_cmd;
- if (data_cmd)
- host->data_cmd = NULL;
-
/*
* The "data complete" interrupt is also used to
* indicate that a busy state has ended. See comment
@@ -2522,11 +2532,13 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
*/
if (data_cmd && (data_cmd->flags & MMC_RSP_BUSY)) {
if (intmask & SDHCI_INT_DATA_TIMEOUT) {
+ host->data_cmd = NULL;
data_cmd->error = -ETIMEDOUT;
sdhci_finish_mrq(host, data_cmd->mrq);
return;
}
if (intmask & SDHCI_INT_DATA_END) {
+ host->data_cmd = NULL;
/*
* Some cards handle busy-end interrupt
* before the command completed, so make
@@ -2912,6 +2924,10 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
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);
+
spin_lock_irqsave(&host->lock, flags);
host->runtime_suspended = false;