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authorLinus Torvalds <torvalds@linux-foundation.org>2019-06-20 20:08:38 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-06-20 20:08:38 +0300
commit6331d118ac61454ee52d5f9be098e9ddab6d6572 (patch)
tree7c7e72b9d50669655fcd58db3209bc2d3215c420 /drivers
parent41a247d896d20b2b7c73ec40523d7caf058c0698 (diff)
parent83293386bc95cf5e9f0c0175794455835bd1cb4a (diff)
downloadlinux-6331d118ac61454ee52d5f9be098e9ddab6d6572.tar.xz
Merge tag 'mmc-v5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson: "Here's quite a few MMC fixes intended for v5.2-rc6. This time it also contains fixes for a WiFi driver, which device is attached to the SDIO interface. Patches for the WiFi driver have been acked by the corresponding maintainers. Summary: MMC core: - Make switch to eMMC HS400 more robust for some controllers - Add two SDIO func API to manage re-tuning constraints - Prevent processing SDIO IRQs when the card is suspended MMC host: - sdhi: Disallow broken HS400 for M3-W ES1.2, RZ/G2M and V3H - mtk-sd: Fixup support for SDIO IRQs - sdhci-pci-o2micro: Fixup support for tuning Wireless BRCMFMAC (SDIO): - Deal with expected transmission errors related to the idle states (handled by the Always-On-Subsystem or AOS) on the SDIO-based WiFi on rk3288-veyron-minnie, rk3288-veyron-speedy and rk3288-veyron-mickey" * tag 'mmc-v5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: core: Prevent processing SDIO IRQs when the card is suspended mmc: sdhci: sdhci-pci-o2micro: Correctly set bus width when tuning brcmfmac: sdio: Don't tune while the card is off mmc: core: Add sdio_retune_hold_now() and sdio_retune_release() brcmfmac: sdio: Disable auto-tuning around commands expected to fail mmc: core: API to temporarily disable retuning for SDIO CRC errors Revert "brcmfmac: disable command decode in sdio_aos" mmc: mediatek: fix SDIO IRQ detection issue mmc: mediatek: fix SDIO IRQ interrupt handle flow mmc: core: complete HS400 before checking status mmc: sdhi: disallow HS400 for M3-W ES1.2, RZ/G2M, and V3H
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/core/core.c5
-rw-r--r--drivers/mmc/core/mmc.c6
-rw-r--r--drivers/mmc/core/sdio.c13
-rw-r--r--drivers/mmc/core/sdio_io.c77
-rw-r--r--drivers/mmc/core/sdio_irq.c4
-rw-r--r--drivers/mmc/host/mtk-sd.c39
-rw-r--r--drivers/mmc/host/renesas_sdhi_core.c9
-rw-r--r--drivers/mmc/host/sdhci-pci-o2micro.c5
-rw-r--r--drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c17
9 files changed, 144 insertions, 31 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 6db36dc870b5..9020cb2490f7 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -144,8 +144,9 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
int err = cmd->error;
/* Flag re-tuning needed on CRC errors */
- if ((cmd->opcode != MMC_SEND_TUNING_BLOCK &&
- cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200) &&
+ if (cmd->opcode != MMC_SEND_TUNING_BLOCK &&
+ cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200 &&
+ !host->retune_crc_disable &&
(err == -EILSEQ || (mrq->sbc && mrq->sbc->error == -EILSEQ) ||
(mrq->data && mrq->data->error == -EILSEQ) ||
(mrq->stop && mrq->stop->error == -EILSEQ)))
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 3e786ba204c3..671bfcceea6a 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1212,13 +1212,13 @@ static int mmc_select_hs400(struct mmc_card *card)
mmc_set_timing(host, MMC_TIMING_MMC_HS400);
mmc_set_bus_speed(card);
+ if (host->ops->hs400_complete)
+ host->ops->hs400_complete(host);
+
err = mmc_switch_status(card);
if (err)
goto out_err;
- if (host->ops->hs400_complete)
- host->ops->hs400_complete(host);
-
return 0;
out_err:
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index d1aa1c7577bb..712a7742765e 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -937,6 +937,10 @@ static int mmc_sdio_pre_suspend(struct mmc_host *host)
*/
static int mmc_sdio_suspend(struct mmc_host *host)
{
+ /* Prevent processing of SDIO IRQs in suspended state. */
+ mmc_card_set_suspended(host->card);
+ cancel_delayed_work_sync(&host->sdio_irq_work);
+
mmc_claim_host(host);
if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host))
@@ -985,13 +989,20 @@ static int mmc_sdio_resume(struct mmc_host *host)
err = sdio_enable_4bit_bus(host->card);
}
- if (!err && host->sdio_irqs) {
+ if (err)
+ goto out;
+
+ /* Allow SDIO IRQs to be processed again. */
+ mmc_card_clr_suspended(host->card);
+
+ if (host->sdio_irqs) {
if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD))
wake_up_process(host->sdio_irq_thread);
else if (host->caps & MMC_CAP_SDIO_IRQ)
host->ops->enable_sdio_irq(host, 1);
}
+out:
mmc_release_host(host);
host->pm_flags &= ~MMC_PM_KEEP_POWER;
diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c
index f79f0b0caab8..2ba00acf64e6 100644
--- a/drivers/mmc/core/sdio_io.c
+++ b/drivers/mmc/core/sdio_io.c
@@ -15,6 +15,7 @@
#include "sdio_ops.h"
#include "core.h"
#include "card.h"
+#include "host.h"
/**
* sdio_claim_host - exclusively claim a bus for a certain SDIO function
@@ -734,3 +735,79 @@ int sdio_set_host_pm_flags(struct sdio_func *func, mmc_pm_flag_t flags)
return 0;
}
EXPORT_SYMBOL_GPL(sdio_set_host_pm_flags);
+
+/**
+ * sdio_retune_crc_disable - temporarily disable retuning on CRC errors
+ * @func: SDIO function attached to host
+ *
+ * If the SDIO card is known to be in a state where it might produce
+ * CRC errors on the bus in response to commands (like if we know it is
+ * transitioning between power states), an SDIO function driver can
+ * call this function to temporarily disable the SD/MMC core behavior of
+ * triggering an automatic retuning.
+ *
+ * This function should be called while the host is claimed and the host
+ * should remain claimed until sdio_retune_crc_enable() is called.
+ * Specifically, the expected sequence of calls is:
+ * - sdio_claim_host()
+ * - sdio_retune_crc_disable()
+ * - some number of calls like sdio_writeb() and sdio_readb()
+ * - sdio_retune_crc_enable()
+ * - sdio_release_host()
+ */
+void sdio_retune_crc_disable(struct sdio_func *func)
+{
+ func->card->host->retune_crc_disable = true;
+}
+EXPORT_SYMBOL_GPL(sdio_retune_crc_disable);
+
+/**
+ * sdio_retune_crc_enable - re-enable retuning on CRC errors
+ * @func: SDIO function attached to host
+ *
+ * This is the compement to sdio_retune_crc_disable().
+ */
+void sdio_retune_crc_enable(struct sdio_func *func)
+{
+ func->card->host->retune_crc_disable = false;
+}
+EXPORT_SYMBOL_GPL(sdio_retune_crc_enable);
+
+/**
+ * sdio_retune_hold_now - start deferring retuning requests till release
+ * @func: SDIO function attached to host
+ *
+ * This function can be called if it's currently a bad time to do
+ * a retune of the SDIO card. Retune requests made during this time
+ * will be held and we'll actually do the retune sometime after the
+ * release.
+ *
+ * This function could be useful if an SDIO card is in a power state
+ * where it can respond to a small subset of commands that doesn't
+ * include the retuning command. Care should be taken when using
+ * this function since (presumably) the retuning request we might be
+ * deferring was made for a good reason.
+ *
+ * This function should be called while the host is claimed.
+ */
+void sdio_retune_hold_now(struct sdio_func *func)
+{
+ mmc_retune_hold_now(func->card->host);
+}
+EXPORT_SYMBOL_GPL(sdio_retune_hold_now);
+
+/**
+ * sdio_retune_release - signal that it's OK to retune now
+ * @func: SDIO function attached to host
+ *
+ * This is the complement to sdio_retune_hold_now(). Calling this
+ * function won't make a retune happen right away but will allow
+ * them to be scheduled normally.
+ *
+ * This function should be called while the host is claimed.
+ */
+void sdio_retune_release(struct sdio_func *func)
+{
+ mmc_retune_release(func->card->host);
+}
+EXPORT_SYMBOL_GPL(sdio_retune_release);
diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
index 931e6226c0b3..9f54a259a1b3 100644
--- a/drivers/mmc/core/sdio_irq.c
+++ b/drivers/mmc/core/sdio_irq.c
@@ -34,6 +34,10 @@ static int process_sdio_pending_irqs(struct mmc_host *host)
unsigned char pending;
struct sdio_func *func;
+ /* Don't process SDIO IRQs if the card is suspended. */
+ if (mmc_card_suspended(card))
+ return 0;
+
/*
* Optimization, if there is only 1 function interrupt registered
* and we know an IRQ was signaled then call irq handler directly.
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 5a6d885994e6..33f4b6387ef7 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -1023,6 +1023,8 @@ static void msdc_request_done(struct msdc_host *host, struct mmc_request *mrq)
msdc_track_cmd_data(host, mrq->cmd, mrq->data);
if (mrq->data)
msdc_unprepare_data(host, mrq);
+ if (host->error)
+ msdc_reset_hw(host);
mmc_request_done(host->mmc, mrq);
}
@@ -1375,24 +1377,25 @@ static void msdc_request_timeout(struct work_struct *work)
}
}
-static void __msdc_enable_sdio_irq(struct mmc_host *mmc, int enb)
+static void __msdc_enable_sdio_irq(struct msdc_host *host, int enb)
{
- unsigned long flags;
- struct msdc_host *host = mmc_priv(mmc);
-
- spin_lock_irqsave(&host->lock, flags);
- if (enb)
+ if (enb) {
sdr_set_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ);
- else
+ sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
+ } else {
sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ);
- spin_unlock_irqrestore(&host->lock, flags);
+ sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
+ }
}
static void msdc_enable_sdio_irq(struct mmc_host *mmc, int enb)
{
+ unsigned long flags;
struct msdc_host *host = mmc_priv(mmc);
- __msdc_enable_sdio_irq(mmc, enb);
+ spin_lock_irqsave(&host->lock, flags);
+ __msdc_enable_sdio_irq(host, enb);
+ spin_unlock_irqrestore(&host->lock, flags);
if (enb)
pm_runtime_get_noresume(host->dev);
@@ -1414,6 +1417,8 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
spin_lock_irqsave(&host->lock, flags);
events = readl(host->base + MSDC_INT);
event_mask = readl(host->base + MSDC_INTEN);
+ if ((events & event_mask) & MSDC_INT_SDIOIRQ)
+ __msdc_enable_sdio_irq(host, 0);
/* clear interrupts */
writel(events & event_mask, host->base + MSDC_INT);
@@ -1422,10 +1427,8 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
data = host->data;
spin_unlock_irqrestore(&host->lock, flags);
- if ((events & event_mask) & MSDC_INT_SDIOIRQ) {
- __msdc_enable_sdio_irq(host->mmc, 0);
+ if ((events & event_mask) & MSDC_INT_SDIOIRQ)
sdio_signal_irq(host->mmc);
- }
if ((events & event_mask) & MSDC_INT_CDSC) {
if (host->internal_cd)
@@ -1564,10 +1567,7 @@ static void msdc_init_hw(struct msdc_host *host)
sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO);
/* Config SDIO device detect interrupt function */
- if (host->mmc->caps & MMC_CAP_SDIO_IRQ)
- sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
- else
- sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
+ sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
/* Configure to default data timeout */
sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, 3);
@@ -2095,7 +2095,12 @@ static void msdc_hw_reset(struct mmc_host *mmc)
static void msdc_ack_sdio_irq(struct mmc_host *mmc)
{
- __msdc_enable_sdio_irq(mmc, 1);
+ unsigned long flags;
+ struct msdc_host *host = mmc_priv(mmc);
+
+ spin_lock_irqsave(&host->lock, flags);
+ __msdc_enable_sdio_irq(host, 1);
+ spin_unlock_irqrestore(&host->lock, flags);
}
static int msdc_get_cd(struct mmc_host *mmc)
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 5e9e36ed2107..5f8d57ac084f 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -620,11 +620,16 @@ static const struct renesas_sdhi_quirks sdhi_quirks_h3_es2 = {
.hs400_4taps = true,
};
+static const struct renesas_sdhi_quirks sdhi_quirks_nohs400 = {
+ .hs400_disabled = true,
+};
+
static const struct soc_device_attribute sdhi_quirks_match[] = {
{ .soc_id = "r8a7795", .revision = "ES1.*", .data = &sdhi_quirks_h3_m3w_es1 },
{ .soc_id = "r8a7795", .revision = "ES2.0", .data = &sdhi_quirks_h3_es2 },
- { .soc_id = "r8a7796", .revision = "ES1.0", .data = &sdhi_quirks_h3_m3w_es1 },
- { .soc_id = "r8a7796", .revision = "ES1.1", .data = &sdhi_quirks_h3_m3w_es1 },
+ { .soc_id = "r8a7796", .revision = "ES1.[012]", .data = &sdhi_quirks_h3_m3w_es1 },
+ { .soc_id = "r8a774a1", .revision = "ES1.[012]", .data = &sdhi_quirks_h3_m3w_es1 },
+ { .soc_id = "r8a77980", .data = &sdhi_quirks_nohs400 },
{ /* Sentinel. */ },
};
diff --git a/drivers/mmc/host/sdhci-pci-o2micro.c b/drivers/mmc/host/sdhci-pci-o2micro.c
index b29bf4e7dcb4..dd21315922c8 100644
--- a/drivers/mmc/host/sdhci-pci-o2micro.c
+++ b/drivers/mmc/host/sdhci-pci-o2micro.c
@@ -115,6 +115,7 @@ static int sdhci_o2_execute_tuning(struct mmc_host *mmc, u32 opcode)
*/
if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) {
current_bus_width = mmc->ios.bus_width;
+ mmc->ios.bus_width = MMC_BUS_WIDTH_4;
sdhci_set_bus_width(host, MMC_BUS_WIDTH_4);
}
@@ -126,8 +127,10 @@ static int sdhci_o2_execute_tuning(struct mmc_host *mmc, u32 opcode)
sdhci_end_tuning(host);
- if (current_bus_width == MMC_BUS_WIDTH_8)
+ if (current_bus_width == MMC_BUS_WIDTH_8) {
+ mmc->ios.bus_width = MMC_BUS_WIDTH_8;
sdhci_set_bus_width(host, current_bus_width);
+ }
host->flags &= ~SDHCI_HS400_TUNING;
return 0;
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
index 22b73da42822..9a51f1ba87c3 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -678,6 +678,12 @@ brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on)
brcmf_dbg(TRACE, "Enter: on=%d\n", on);
+ sdio_retune_crc_disable(bus->sdiodev->func1);
+
+ /* Cannot re-tune if device is asleep; defer till we're awake */
+ if (on)
+ sdio_retune_hold_now(bus->sdiodev->func1);
+
wr_val = (on << SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT);
/* 1st KSO write goes to AOS wake up core if device is asleep */
brcmf_sdiod_writeb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, wr_val, &err);
@@ -738,6 +744,11 @@ brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on)
if (try_cnt > MAX_KSO_ATTEMPTS)
brcmf_err("max tries: rd_val=0x%x err=%d\n", rd_val, err);
+ if (on)
+ sdio_retune_release(bus->sdiodev->func1);
+
+ sdio_retune_crc_enable(bus->sdiodev->func1);
+
return err;
}
@@ -3375,11 +3386,7 @@ err:
static bool brcmf_sdio_aos_no_decode(struct brcmf_sdio *bus)
{
- if (bus->ci->chip == CY_CC_43012_CHIP_ID ||
- bus->ci->chip == CY_CC_4373_CHIP_ID ||
- bus->ci->chip == BRCM_CC_4339_CHIP_ID ||
- bus->ci->chip == BRCM_CC_4345_CHIP_ID ||
- bus->ci->chip == BRCM_CC_4354_CHIP_ID)
+ if (bus->ci->chip == CY_CC_43012_CHIP_ID)
return true;
else
return false;