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Ulf Hansson a9cbd79c7e mmc: mmci: Clarify comments and some code for busy detection 
The code dealing with busy detection is somewhat complicated. In a way to
make it a bit clearer, let's try to clarify the comments in the code about
it.

Additionally, move the part for clearing the so called busy start IRQ, to
the place where the IRQ is actually delivered. Ideally, this should make
the code a bit more robust.

Finally, to improve understanding of the code and the sequence of the busy
detection, move the corresponding code around a bit in mmci_cmd_irq().

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Jean Nicolas GRAUX <jean-nicolas.graux@st.com>
Reviewed-by: Jean Nicolas GRAUX <jean-nicolas.graux@st.com>
 		2019-09-11 15:58:39 +02:00
..
Kconfig mmc: sdhci_am654: Add dependency on MMC_SDHCI_AM654 2019-07-10 13:17:30 +02:00
Makefile mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver 2018-12-17 08:26:24 +01:00
alcor.c mmc: alcor: remove a redundant greater or equal to zero comparison 2019-07-10 13:17:30 +02:00
android-goldfish.c MMC core: 2019-07-11 18:11:21 -07:00
atmel-mci.c MMC core: 2019-07-11 18:11:21 -07:00
au1xmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
bcm2835.c mmc: bcm2835: Deduplicate reset of driver data on remove 2019-02-25 08:40:58 +01:00
cavium-octeon.c mmc: cavium-octeon: Convert to use module_platform_driver 2017-08-30 15:03:38 +02:00
cavium-thunderx.c mmc: cavium: Fix use-after-free in of_platform_device_destroy 2017-09-08 15:38:22 +02:00
cavium.c mmc: cavium: Add the missing dma unmap when the dma has finished. 2019-08-06 18:59:14 +02:00
cavium.h mmc: cavium: Add scatter-gather DMA support 2017-04-24 21:42:10 +02:00
cb710-mmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cb710-mmc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cqhci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
cqhci.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
davinci_mmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
dw_mmc-bluefield.c mmc: dw_mmc-bluefield: : Fix the license information 2019-01-22 08:46:20 +01:00
dw_mmc-exynos.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-exynos.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-hi3798cv200.c mmc: dw_mmc: hi3798cv200: add MMC_CAP_CMD23 cap 2018-10-08 11:40:43 +02:00
dw_mmc-k3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-pltfm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-pltfm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-rockchip.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-zx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-zx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dw_mmc.c mmc: dw_mmc: Fix occasional hang after tuning on eMMC 2019-07-22 14:30:23 +02:00
dw_mmc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
jz4740_mmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 151 2019-05-30 11:26:28 -07:00
meson-gx-mmc.c MMC core: 2019-07-11 18:11:21 -07:00
meson-mx-sdio.c mmc: meson-mx-sdio: Fix misuse of GENMASK macro 2019-07-22 15:09:23 +02:00
mmc_spi.c mmc: mmc_spi: Convert to use SPDX identifier 2019-04-15 11:55:54 +02:00
mmci.c mmc: mmci: Clarify comments and some code for busy detection 2019-09-11 15:58:39 +02:00
mmci.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mmci_qcom_dml.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
mmci_stm32_sdmmc.c mmc: mmci: stm32: define get_dctrl_cfg 2019-04-15 11:55:54 +02:00
moxart-mmc.c mmc: moxart: constify mmc_host_ops structures 2017-08-30 14:01:41 +02:00
mtk-sd.c mmc: mediatek: fix SDIO IRQ detection issue 2019-06-17 13:26:50 +02:00
mvsdio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mvsdio.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mxcmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mxs-mmc.c mmc: mxs: use devm_platform_ioremap_resource() to simplify code 2019-09-11 15:58:39 +02:00
of_mmc_spi.c mmc: mmc_spi: Convert to use SPDX identifier 2019-04-15 11:55:54 +02:00
omap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap_hsmmc.c mmc: omap_hsmmc: Use dev_get_drvdata() 2019-05-06 11:55:39 +02:00
pxamci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pxamci.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
renesas_sdhi.h mmc: renesas_sdhi: update copyright information 2019-04-15 11:55:54 +02:00
renesas_sdhi_core.c mmc: sdhi: remove unneeded initialization 2019-06-10 17:13:25 +02:00
renesas_sdhi_internal_dmac.c mmc: renesas_sdhi: prevent overflow for max_req_size 2019-04-15 11:55:54 +02:00
renesas_sdhi_sys_dmac.c mmc: renesas_sdhi: prevent overflow for max_req_size 2019-04-15 11:55:54 +02:00
rtsx_pci_sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 17 2019-05-21 11:28:46 +02:00
rtsx_usb_sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
s3cmci.c MMC core: 2019-07-11 18:11:21 -07:00
s3cmci.h MMC core: 2019-07-11 18:11:21 -07:00
sdhci-acpi.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-bcm-kona.c mmc: sdhci-bcm-kona: Drop unused includes 2019-02-25 08:40:58 +01:00
sdhci-brcmstb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
sdhci-cadence.c mmc: sdhci-cadence: enable v4_mode to fix ADMA 64-bit addressing 2019-08-30 09:17:53 +02:00
sdhci-cns3xxx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sdhci-dove.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
sdhci-esdhc-imx.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-esdhc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178 2019-05-30 11:29:19 -07:00
sdhci-iproc.c mmc: sdhci-iproc: Add support for emmc2 of the BCM2711 2019-09-11 15:58:39 +02:00
sdhci-msm.c mmc: sdhci-msm: fix mutex while in spinlock 2019-07-10 13:17:30 +02:00
sdhci-of-arasan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sdhci-of-at91.c mmc: sdhci-of-at91: add quirk for broken HS200 2019-08-22 13:49:40 +02:00
sdhci-of-dwcmshc.c mmc: sdhci-of-dwcmshc: solve 128MB DMA boundary limitation 2018-10-08 11:40:43 +02:00
sdhci-of-esdhc.c mmc: sdhci-of-esdhc: use 1/2 periperhal clock for ls1028a 2019-06-17 13:33:54 +02:00
sdhci-of-hlwd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sdhci-omap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 341 2019-06-05 17:37:07 +02:00
sdhci-pci-arasan.c mmc:host:sdhci-pci:Addition of Arasan PCI Controller with integrated phy. 2018-01-04 12:46:11 +01:00
sdhci-pci-core.c mmc: sdhci-pci: Use dev_get_drvdata 2019-09-11 15:58:39 +02:00
sdhci-pci-data.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
sdhci-pci-dwc-mshc.c mmc: sdhci-pci-dwc-mshc: synopsys dwc mshc support 2018-07-16 11:21:45 +02:00
sdhci-pci-o2micro.c mmc: sdhci: sdhci-pci-o2micro: Check if controller supports 8-bit width 2019-06-18 13:39:03 +02:00
sdhci-pci.h mmc: sdhci-pci: Add support for Intel EHL 2019-07-10 13:17:30 +02:00
sdhci-pic32.c mmc: sdhci-*: Don't emit error msg if sdhci_add_host() fails 2018-05-29 12:24:26 +02:00
sdhci-pltfm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
sdhci-pltfm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sdhci-pxav2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
sdhci-pxav3.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-s3c.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-sirf.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
sdhci-spear.c mmc: sdhci: spear: Use the slot GPIO descriptor 2018-10-08 11:40:43 +02:00
sdhci-sprd.c mmc: sdhci-sprd: clear the UHS-I modes read from registers 2019-08-30 09:17:53 +02:00
sdhci-st.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
sdhci-tegra.c Revert "mmc: sdhci-tegra: drop ->get_ro() implementation" 2019-08-21 14:48:30 +02:00
sdhci-xenon-phy.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
sdhci-xenon.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-xenon.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
sdhci.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci.h mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci_am654.c mmc: sdhci_am654: Make some symbols static 2019-07-10 13:17:30 +02:00
sdhci_f_sdh30.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
sdricoh_cs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
sh_mmcif.c mmc: use SPDX identifier for Renesas drivers 2018-10-08 11:40:43 +02:00
sunxi-mmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tifm_sd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
tmio_mmc.c mmc: tmio: move runtime PM enablement to the driver implementations 2019-06-10 17:09:56 +02:00
tmio_mmc.h mmc: tmio: introduce macro for max block size 2019-04-15 11:55:54 +02:00
tmio_mmc_core.c mmc: tmio: Use dma_max_mapping_size() instead of a workaround 2019-07-10 13:17:30 +02:00
toshsd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
toshsd.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
uniphier-sd.c mmc: tmio: move runtime PM enablement to the driver implementations 2019-06-10 17:09:56 +02:00
usdhi6rol0.c mmc: usdhi6rol0: mark expected switch fall-throughs 2019-05-06 12:33:03 +02:00
ushc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
via-sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vub300.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
wbsd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
wbsd.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
wmt-sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00