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author | 2020-03-13 12:21:10 -0700 | |
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committer | 2020-03-13 12:21:10 -0700 | |
commit | d36561296bb510bf339750ea22efaa660277642e (patch) | |
tree | 7db5adec1f1de5ca98818ce382d28fbaecec6ef9 /drivers | |
parent | afs: Use kfree_rcu() instead of casting kfree() to rcu_callback_t (diff) | |
parent | mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for eMMC sleep command (diff) | |
download | linux-d36561296bb510bf339750ea22efaa660277642e.tar.gz linux-d36561296bb510bf339750ea22efaa660277642e.tar.bz2 linux-d36561296bb510bf339750ea22efaa660277642e.zip |
Merge tag 'mmc-v5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix HW busy detection support for host controllers requiring the
MMC_RSP_BUSY response flag (R1B) to be set for the command. In
particular for CMD6 (eMMC), erase/trim/discard (SD/eMMC) and CMD5
(eMMC sleep).
MMC host:
- sdhci-omap|tegra: Fix support for HW busy detection"
* tag 'mmc-v5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for eMMC sleep command
mmc: sdhci-tegra: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
mmc: sdhci-omap: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for erase/trim/discard
mmc: core: Allow host controllers to require R1B for CMD6
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/mmc/core/core.c | 5 | ||||
-rw-r--r-- | drivers/mmc/core/mmc.c | 7 | ||||
-rw-r--r-- | drivers/mmc/core/mmc_ops.c | 6 | ||||
-rw-r--r-- | drivers/mmc/host/sdhci-omap.c | 3 | ||||
-rw-r--r-- | drivers/mmc/host/sdhci-tegra.c | 3 |
5 files changed, 19 insertions, 5 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index aa54d359dab7..a971c4bcc442 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1732,8 +1732,11 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from, * the erase operation does not exceed the max_busy_timeout, we should * use R1B response. Or we need to prevent the host from doing hw busy * detection, which is done by converting to a R1 response instead. + * Note, some hosts requires R1B, which also means they are on their own + * when it comes to deal with the busy timeout. */ - if (card->host->max_busy_timeout && + if (!(card->host->caps & MMC_CAP_NEED_RSP_BUSY) && + card->host->max_busy_timeout && busy_timeout > card->host->max_busy_timeout) { cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; } else { diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index f6912ded652d..de14b5845f52 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1910,9 +1910,12 @@ static int mmc_sleep(struct mmc_host *host) * If the max_busy_timeout of the host is specified, validate it against * the sleep cmd timeout. A failure means we need to prevent the host * from doing hw busy detection, which is done by converting to a R1 - * response instead of a R1B. + * response instead of a R1B. Note, some hosts requires R1B, which also + * means they are on their own when it comes to deal with the busy + * timeout. */ - if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { + if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout && + (timeout_ms > host->max_busy_timeout)) { cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; } else { cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index da425ee2d9bf..e025604e17d4 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -542,9 +542,11 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, * If the max_busy_timeout of the host is specified, make sure it's * enough to fit the used timeout_ms. In case it's not, let's instruct * the host to avoid HW busy detection, by converting to a R1 response - * instead of a R1B. + * instead of a R1B. Note, some hosts requires R1B, which also means + * they are on their own when it comes to deal with the busy timeout. */ - if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) + if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout && + (timeout_ms > host->max_busy_timeout)) use_r1b_resp = false; cmd.opcode = MMC_SWITCH; diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index 882053151a47..c4978177ef88 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -1192,6 +1192,9 @@ static int sdhci_omap_probe(struct platform_device *pdev) if (of_find_property(dev->of_node, "dmas", NULL)) sdhci_switch_external_dma(host, true); + /* R1B responses is required to properly manage HW busy detection. */ + mmc->caps |= MMC_CAP_NEED_RSP_BUSY; + ret = sdhci_setup_host(host); if (ret) goto err_put_sync; diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 403ac44a7378..a25c3a4d3f6c 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -1552,6 +1552,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev) if (tegra_host->soc_data->nvquirks & NVQUIRK_ENABLE_DDR50) host->mmc->caps |= MMC_CAP_1_8V_DDR; + /* R1B responses is required to properly manage HW busy detection. */ + host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY; + tegra_sdhci_parse_dt(host); tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power", |