Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Let the dma map ops deal with bouncing and drop dma_max_pfn() from
     the dma-mapping interface for ARM
   - Convert the generic MMC DT doc to YAML schemas
   - Drop questionable support for powered-on re-init of SDIO cards at
     runtime resume and for SDIO HW reset
   - Prevent questionable re-init of powered-on removable SDIO cards at
     system resume
   - Cleanup and clarify some SDIO core code

  MMC host:
   - tmio: Make runtime PM enablement more flexible for variants
   - tmio/renesas_sdhi: Rename DT doc tmio_mmc.txt to renesas,sdhi.txt
     to clarify
   - sdhci-pci: Add support for Intel EHL
   - sdhci-pci-o2micro: Enable support for 8-bit bus
   - sdhci-msm: Prevent acquiring a mutex while holding a spin_lock
   - sdhci-of-esdhc: Improve clock management and tuning
   - sdhci_am654: Enable support for 4 and 8-bit bus on J721E
   - sdhci-sprd: Use pinctrl for a proper signal voltage switch
   - sdhci-sprd: Add support for HS400 enhanced strobe mode
   - sdhci-sprd: Enable PHY DLL and allow delay config to stabilize the
     clock
   - sdhci-sprd: Add support for optional gate clock
   - sunxi-mmc: Convert DT doc to YAML schemas
   - meson-gx: Add support for broken DRAM access for DMA

  MEMSTICK core:
   - Fixup error path of memstick_init()"

* tag 'mmc-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (52 commits)
  mmc: sdhci_am654: Add dependency on MMC_SDHCI_AM654
  mmc: alcor: remove a redundant greater or equal to zero comparison
  mmc: sdhci-msm: fix mutex while in spinlock
  mmc: sdhci_am654: Make some symbols static
  dma-mapping: remove dma_max_pfn
  mmc: core: let the dma map ops handle bouncing
  dt-binding: mmc: rename tmio_mmc.txt to renesas,sdhi.txt
  mmc: sdhci-sprd: Add pin control support for voltage switch
  dt-bindings: mmc: sprd: Add pinctrl support
  mmc: sdhci-sprd: Add start_signal_voltage_switch ops
  mmc: sdhci-pci: Add support for Intel EHL
  mmc: tmio: Use dma_max_mapping_size() instead of a workaround
  mmc: sdio: Drop unused in-parameter from mmc_sdio_init_card()
  mmc: sdio: Drop unused in-parameter to mmc_sdio_reinit_card()
  mmc: sdio: Don't re-initialize powered-on removable SDIO cards at resume
  mmc: sdio: Drop powered-on re-init at runtime resume and HW reset
  mmc: sdio: Move comment about re-initialization to mmc_sdio_reinit_card()
  mmc: sdio: Drop mmc_claim|release_host() in mmc_sdio_power_restore()
  mmc: sdio: Turn sdio_run_irqs() into static
  mmc: sdhci: Fix indenting on SDHCI_CTRL_8BITBUS
  ...

Fix build error:

drivers/mmc/host/sdhci_am654.o: In function `sdhci_am654_probe':
drivers/mmc/host/sdhci_am654.c:464: undefined reference to `__devm_regmap_init_mmio_clk'
drivers/mmc/host/sdhci_am654.o:(.debug_addr+0x3f8): undefined reference to `__devm_regmap_init_mmio_clk'

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: aff88ff23512 ("mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

A greater or equal comparison on the unsigned int variable tmp_diff
is always true as unsigned ints are never negative.  Hence the
comparison is redundant and can be removed.

Addresses-Coverity: ("Unsigned compared against 0")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

mutexes can sleep and therefore should not be taken while holding a
spinlock. move clk_get_rate (can sleep) outside the spinlock protected
region.

Fixes: 83736352e0ca ("mmc: sdhci-msm: Update DLL reset sequence")
Cc: stable@vger.kernel.org
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Fix sparse warnings:

drivers/mmc/host/sdhci_am654.c:192:6: warning: symbol 'sdhci_j721e_4bit_set_clock' was not declared. Should it be static?
drivers/mmc/host/sdhci_am654.c:261:18: warning: symbol 'sdhci_j721e_8bit_ops' was not declared. Should it be static?
drivers/mmc/host/sdhci_am654.c:284:18: warning: symbol 'sdhci_j721e_4bit_ops' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Just like we do for all other block drivers. Especially as the limit
imposed at the moment might be way to pessimistic for iommus.

This also means we are not going to set a bounce limit for the queue, in
case we have a dma mask. On most architectures it was never needed, the
major hold out was x86-32 with PAE, but that has been fixed by now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

For Spreadtrum SD card voltage switching, besides regulator setting,
it also need switch related pin's state to output corresponding voltage.

This patch adds pin control operation to support voltage switch.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

For Spreadtrum SD host controller, we can not use standard SD registers
to change and detect the I/O voltage signals, since our voltage regulator
for I/O is fixed in hardware, and no signals were connected to the SD
controller. Thus add Spreadtrum specific voltage switch ops to change
voltage instead of using standard SD host registers.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Add PCI Ids for Intel EHL.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Since the commit 133d624b1cee ("dma: Introduce dma_max_mapping_size()")
provides a helper function to get the max mapping size, we can use
the function instead of the workaround code for swiotlb.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>