Allocate both the alignment and DMA descriptor buffers together. The
size of the alignment buffer will always be aligned to the hosts
required alignment, which gives appropriate alignment to the DMA
descriptors.
We have a maximum of 128 segments, and a maximum alignment of 64 bits.
This gives a maximum alignment buffer size of 1024 bytes.
The DMA descriptors are a maximum of 12 bytes, and we allocate 128 * 2
+ 1 of these, which gives a maximum DMA descriptor buffer size of 3084
bytes.
This means the allocation for a 4K page sized system will be an order-1
allocation, since the resulting overall size is 4108. This is more
prone to failure than page-sized allocations, but since this allocation
commonly occurs at startup, the chances of failure are small.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[ Changed to check ADMA table alignment ]
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The calculation for the timeout based on the number of card clocks is
incorrect. The calculation assumed:
timeout in microseconds = clock cycles / clock in Hz
which is clearly a several orders of magnitude wrong. Fix this by
multiplying the clock cycles by 1000000 prior to dividing by the Hz
based clock. Also, as per part 1, ensure that the division rounds
up.
As this needs 64-bit math via do_div(), avoid it if the clock cycles
is zero.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v3.15+
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The data timeout gives the minimum amount of time that should be
waited before timing out if no data is received from the card.
Simply dividing the nanosecond part by 1000 does not give this
required guarantee, since such a division rounds down. Use
DIV_ROUND_UP() to give the desired timeout.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v3.15+
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
sdhci_post_req() exists to unmap a previously mapped but already
finished request, while the next request is in progress. However, the
state of the SDHCI_REQ_USE_DMA flag depends on the last submitted
request.
This means we can end up clearing the flag due to a quirk, which then
means that sdhci_post_req() fails to unmap the DMA buffer, potentially
leading to data corruption.
We can safely ignore the SDHCI_REQ_USE_DMA here, as testing
data->host_cookie is entirely sufficient.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[ Re-based to apply as a separate fix ]
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.5+
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit 1140011ee9 ("mmc: sdhci-pxav3: Modify clock settings for the
SDR50 and DDR50 modes") broke any chance of the SDR50 or DDR50 modes
being used.
The commit claims that SDR50 and DDR50 require clock adjustments in
the SDIO3 Configuration register, which is located via the "conf-sdio3"
resource. However, when this resource is given, we fail to read the
host capabilities 1 register, resulting in host->caps1 being zero.
Hence, both SDHCI_SUPPORT_SDR50 and SDHCI_SUPPORT_DDR50 bits remain
zero, disabling the SDR50 and DDR50 modes.
The underlying idea in this function appears to be to read the device
capabilities, modify them, and set SDHCI_QUIRK_MISSING_CAPS to cause
our modified capabilities to be used. Implement exactly that.
Fixes: 1140011ee9 ("mmc: sdhci-pxav3: Modify clock settings for the SDR50 and DDR50 modes")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
If we terminate a command early, we fail to properly clean up the DMA
mappings for the data part of the request. Put this clean up to the
tasklet, which is the common path for finishing a request so we always
clean up after ourselves.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[ Split original patch so that it now contains only the fix ]
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.5+
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Unnecessarily mapping and unmapping the align buffer for SD cards is
expensive: performance measurements on iMX6 show that this gives a hit
of 10% on hdparm buffered disk reads.
MMC/SD card IO comes from the mm/vfs which gives us page based IO, so
for this case, the align buffer is not going to be used. However, we
still map and unmap this buffer.
Eliminate this by switching the align buffer to be a DMA coherent
buffer, which needs no DMA maintenance to access the buffer.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.5+
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When we get a response CRC error on a command, it means that the
response we received back from the card was not correct. It does not
mean that the card did not receive the command correctly. If the
command is one which initiates a data transfer, the card can enter the
data transfer state, and start sending data.
Moreover, if the request contained a data phase, we do not clean this
up, and this results in the driver triggering DMA API debug warnings,
and also creates a race condition in the driver, between running the
finish_tasklet and the data transfer interrupts, which can trigger a
"Got data interrupt" state dump.
Fix this by handing a response CRC error slightly differently: record
the failure of the data initiating command, but allow the remainder of
the request to be processed normally. This is safe as core MMC checks
the status of all commands and data transfer phases of the request.
If the card does not initiate a data transfer, then we should time out
according to the data transfer parameters.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[ Fix missing parenthesis around bitwise-AND expression, and tweak subject ]
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.5+
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When a command is started, logically it has no error. Initialise the
command's error member to zero whenever we start a command.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
[ Goes with "mmc: sdhci: fix command response CRC error handling" ]
Cc: stable@vger.kernel.org # v4.5+
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
sdhci_add_host() allows the Host Controller Capability registers
to be supplied by the calling driver by using
SDHCI_QUIRK_MISSING_CAPS, but the check for the Capabilities bit
SDHCI_CAN_64BIT doesn't use the applied value and instead reads
the Host register directly. This change uses the supplied "caps"
register instead of reading the host register.
This change will allow a calling driver to simply clear the
SDHCI_CAN_64BIT bit in "caps" to handle some cases of
SDHCI_QUIRK2_BROKEN_64_BIT_DMA.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This driver supports the SDHCI host controller found on a PIC32.
Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com>
Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
This patch make num_slots to 1 if pdata->num_slot is not
defined. Meanwhile, we need to make sure num_slots should
not larger that the supported slots
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
dw_mci_probe clear interrupts and disable all interrupts firstly.
While it clear interrupt again before enable some interrupts. We
can't see any reason to clear it twice here, so remove the second one.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
dw_mmc already use mmc_of_parse to get "broken-cd" property,
but it considered "broken-cd" to be a quirk in its driver. We
don't need this quirk here, and just take what we need from
mmc->caps.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch implement hw_reset function for DesignWare
MMC controller. By adding this feature, mmc blk can
do some basic recovery.
Set the following resets:
software reset – BMOD[0] for IDMAC only
DMA reset - CTRL[2]
FIFO reset - CTRL[1] bits
Program the CARD_RESET register with a value of 0 for the bit
corresponding to the card number; This programming asserts the
RST_n signal and resets the card. After a minimum of 1 ?s, de-asserts the
RST_n signal and takes the card out of reset. The application can program
a new CMD only after a minimum of 200 us
This implementation can be easily tested by cutting off->On vmmc
while doing data accessing in background to simulate that case.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch removes the prepare_command hook from entire dw_mmc driver.
Now, almost all SoCs are using by default, except Exynos.
It seems that dwmmc controller is using unnecessary hook.
To know whether needs to set this bit or not,
add the DW_MMC_CARD_NO_USE_HOLD bit.
If some SoCs need to disable this in future, just set the
DW_MMC_CARD_NO_USE_HOLD bit.
set_bit(DW_MMC_CARD_NO_USE_HOLD, &slot->flags),
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Rcar2 & 3 docs state that for going to and coming from the 0xff setting,
the clock must first be disabled before the DIV bits are changed.
Instead of tracking this, let's just do this unconditionally.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Some of the indentation made the code awful to read. Fix that. Also,
introduce defines instead of magic hex values. Note that this includes
one change: We mask out know 0xff instead of 0x1ff. But 0x100 has always
been the clock enable bit. It doesn't make any sense to set it depending
on the clock calculation. Update copyright notices, too. I'll be working
on those files some more in the future.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
These don't make sense anymore. Since commit 5d60e50054 ("mmc: tmio:
add new TMIO_MMC_HAVE_HIGH_REG flags"), we don't deal with a resource
here.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The docs for RCar Gen2 & 3 I have access to, mention delays of 5ms after
stop and 1ms after start. Make it possible to apply these values.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
All the docs I have access to say that this register needs the bus busy
check.
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Ai Kyuse <ai.kyuse.uw@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When compiling the driver with CONFIG_MMC_DEBUG set, I got build
warnings. They have been 'fixed' meanwhile. However, because these debug
messages look random anyhow (some duplicate information printed etc),
let's just drop them and rather re-add something consistent if that
should ever be needed.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Remove the MMC_DATA_STREAM flag because it isn't used anymore.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Now that clock delay settings for 8 bit DDR are correct, and vqmmc
support is available, we can enable MMC_CAP_1_8V_DDR support. This
enables MMC HS-DDR at up to 52 MHz, even if signal voltage switching
is not available.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Allwinner's MMC controller needs to run at double the card clock rate
for 8 bit DDR transfer modes. Interestingly, this is not needed for
4 bit DDR transfers.
Different clock delays are needed for 8 bit eMMC DDR, due to the
increased module clock rate. For the A80 though, the same values for
4 bit and 8 bit are shared. The new values for the other SoCs were from
A83T user manual's "new timing mode" default values, which describes
them in clock phase, rather than delay periods. These values were used
without any modification. They may not be correct, but they work.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
DDR transfer modes include UHS-1 DDR50 and MMC HS-DDR (or MMC_DDR52).
Consider MMC_DDR52 when setting clock delays.
Since MMC high speed mode goes up to 52 MHz instead of 50 MHz for SD,
and this number is visible in the capability macro, increase the
clock rate upper limit to 52 MHz.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The sdhci_iproc_remove() is jsut a wrapper to sdhci_pltfm_unregister.
So use the sdhci_pltfm_unregister() for the .remove hook directly.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Scott Branden from Broadcom said that the BCM2835 eMMC IP core is
very similar to IPROC and share most of the quirks. So use this driver
instead of separate one.
The sdhci-iproc contains a better workaround for the clock domain
crossing problem which doesn't need any delays. This results in a
better write performance.
Btw we get the rid of the SDHCI_CAPABILITIES hack in the sdhci_readl
function.
Suggested-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Eric Anholt <eric@anholt.net>
Acked-by: Scott Branden <sbranden@broadcom.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch moves the definition of the MMC capabilities
from the probe function into iproc platform data. After
that we are able to add support for another platform more
easily.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Suggested-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Scott Branden <sbranden@broadcom.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
I don't see a reason why a host driver should depend on the card driver.
It also prevents that we can use the mmc_test driver. So, remove it.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When DT based probing is used but the DMA request fails, the
driver will print uninitialized stack data from the rx_req
and tx_req variables, as indicated by this warning:
drivers/mmc/host/omap_hsmmc.c: In function 'omap_hsmmc_probe':
drivers/mmc/host/omap_hsmmc.c:2162:3: warning: 'rx_req' may be used uninitialized in this function [-Wmaybe-uninitialized]
dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req);
This removes the DMA request line number from the warning, which
is the easiest solution and won't hurt us any more as we are
planning to remove the legacy code path anyway.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch enables sdhci-acpi devices to suspend/resume asynchronously.
This will improve system suspend/resume speed. After enabling the
sdhci-acpi devices and all their child devices to suspend/resume
asynchronously on ASUS T100TA, the system suspend-to-idle time is
reduced from 1645ms to 1089ms, and the system resume time is reduced
from 940ms to 908ms.
Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
eMMC chips require 2 power supplies, vmmc for internal logic, and vqmmc
for driving output buffers. vqmmc also controls signaling voltage. Most
boards we've seen use the same regulator for both, nevertheless the 2
have different usages, and should be set separately.
This patch adds support for vqmmc regulator supply, including voltage
switching. The MMC core can use this to try different signaling voltages
for eMMC.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Let .set_ios() fail if mmc_regulator_set_ocr() fails to enable and set a
proper voltage for vmmc.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
sunxi_mmc_init_host() originated from Allwinner kernel sources. The
magic numbers written to various registers was never documented.
Add comments for values found in Allwinner user manuals.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The RPi firmware-based clocks driver can actually disable
unused clocks, so when switching to use it we ended up losing
our MMC clock once all devices were probed.
This patch adopts the changes from 1e5a0a9a58 ("mmc: sdhci-bcm2835:
Actually enable the clock") to sdhci-iproc.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch adopts the changes from 475c9e43bf ("mmc: sdhci-bcm2835:
Clean up platform allocations if sdhci init fails") to sdhci-iproc.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The Arason SD host controller supports set block count command (cmd23)
and high speed mode. This patch re-enable both of these features that
was disabled. For device that doesn't support high speed, it should
configure its capability register accordingly instead disables it
explicitly.
Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Since v4.3+, CONFIG_REGULATOR_PBIAS should be enabled (for platforms that
have PBIAS regulator) in order for MMC1 to work.
Add a more verbose print to help enable CONFIG_REGULATOR_PBIAS for users
using a olddefconfig or a custom .config.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This issue was detected by using the Coccinelle software.
Two pointer checks could be repeated by the sdricoh_init_mmc() function
during error handling even if the relevant properties can be determined
for the involved variables before by source code analysis.
* This implementation detail could be improved by adjustments
for jump targets according to the Linux coding style convention.
* Drop an unnecessary initialisation for the variable "mmc" then.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
These variables will eventually be set to an appropriate value a bit later.
* host
* iobase
* result
Thus let us omit the explicit initialisation at the beginning.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit 5de85b9d57 ("PM / runtime: Re-init runtime PM states at probe
error and driver unbind") introduced pm_runtime_reinit() that is used
to reinitialize PM runtime after -EPROBE_DEFER. This allows shutting
down the device after a failed probe.
However, for drivers using pm_runtime_use_autosuspend() this can cause
a state where suspend callback is never called after -EPROBE_DEFER.
On the following device driver probe, hardware state is different from
the PM runtime state causing omap_device to produce the following
error:
omap_device_enable() called from invalid state 1
And with omap_device and omap hardware being picky for PM, this will
block any deeper idle states in hardware.
The solution is to fix the drivers to follow the PM runtime documentation:
1. For sections of code that needs the device disabled, use
pm_runtime_put_sync_suspend() if pm_runtime_set_autosuspend() has
been set.
2. For driver exit code, use pm_runtime_dont_use_autosuspend() before
pm_runtime_put_sync() if pm_runtime_use_autosuspend() has been
set.
Fixes: 5de85b9d57 ("PM / runtime: Re-init runtime PM states at probe
error and driver unbind")
Cc: linux-mmc@vger.kernel.org
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Intel BXT/APL use a card detect GPIO however the host controller
will not enable bus power unless it's card detect also reflects
the presence of a card. Unfortunately those 2 things race which
can result in commands not starting, after which the controller
does nothing and there is a 10 second wait for the driver's
10-second timer to timeout.
That is fixed by having the driver look also at the present state
register to determine if the card is present. Consequently, provide
a 'get_cd' mmc host operation for BXT/APL that does that.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Intel BXT/APL use a card detect GPIO however the host controller
will not enable bus power unless it's card detect also reflects
the presence of a card. Unfortunately those 2 things race which
can result in commands not starting, after which the controller
does nothing and there is a 10 second wait for the driver's
10-second timer to timeout.
That is fixed by having the driver look also at the present state
register to determine if the card is present. Consequently, provide
a 'get_cd' mmc host operation for BXT/APL that does that.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Drivers may need to provide their own get_cd() mmc host op, but
currently the internals of the current op (sdhci_get_cd()) are
provided by sdhci_do_get_cd() which is also called from
sdhci_request().
To allow override of the get_cd functionality, change sdhci_request()
to call ->get_cd() instead of sdhci_do_get_cd().
Note, in the future the call to ->get_cd() will likely be removed
from sdhci_request() since most drivers don't need actually it.
However this change is being done now to facilitate a subsequent
bug fix.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
In the past, fixes for specific hardware devices were implemented
in sdhci using quirks. That approach is no longer accepted because
the growing number of quirks was starting to make the code difficult
to understand and maintain.
One alternative to quirks, is to allow drivers to override the default
mmc host operations. This patch makes it easy to do that, and it is
needed for a subsequent bug fix, for which separate patches are
provided.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When the gpio driver is probed after the mmc one, the read/write gpio
and card detection one return -EPROBE_DEFER. Unfortunately, the memory
region remains requested, and upon the next probe, the probe will fail
anyway with -EBUSY.
Fix this by releasing the memory resource upon probe failure.
More broadly, this patch uses devm_*() primitives whenever possible in
the probe function.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
There is no checks for dma mapping errors in mmc_spi.
Tha patch fixes that and by the way it adds dma_unmap_single(ones_dma)
that was left on a failure path mmc_spi_probe().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The device power usage counter is increased by pm_runtime_get_noresume
but isn't decreased in err_add_host error path.
Fix this issue by calling pm_runtime_put_noidle() in the error path to
restore the device's power usage counter.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Fixes: f5f17813ae ("mmc: sdhci-of-at91: add PM support)
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The commit fixing the conversion of pxamci to slot-gpio API fixed the
inverted the logic of the read-only gpio. Unfortunately, the commit was
tested on a non-inverted gpio, and not on the inverted one. And the fix
did work partially, by luck.
This is the remaining missing part of the fix, trivial but still necessary.
Fixes: Fixes: 26d49fe719 ("mmc: pxamci: fix read-only gpio detection polarity")
Reported-by: Andrea Adami <andrea.adami@gmail.com>
Tested-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
- Restore reset-gpios to be optional in pwrseq_simple
- Allow SDIO tuple for CISTPL_SDIO_STD
- Print correct voltage value in debugfs
- Enable tuning according to the actual timing
- Limit SD card power limit according to cards capabilities
MMC host:
- tmio_mmc_dma: don't print invalid DMA cookie
- mmci: Pick the correct variant and allow 8-bit mode for Nomadik
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Merge tag 'mmc-v4.5-rc1' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fixes from Ulf Hansson:
"Here are some mmc fixes intended for v4.5 rc1.
MMC core:
- Restore reset-gpios to be optional in pwrseq_simple
- Allow SDIO tuple for CISTPL_SDIO_STD
- Print correct voltage value in debugfs
- Enable tuning according to the actual timing
- Limit SD card power limit according to cards capabilities
MMC host:
- tmio_mmc_dma: don't print invalid DMA cookie
- mmci: Pick the correct variant and allow 8-bit mode for Nomadik"
* tag 'mmc-v4.5-rc1' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: pwrseq_simple: Make reset-gpios optional to match doc
mmc: sdio_cis: fix unknown tuple for CISTPL_SDIO_STD
mmc: debugfs: correct wrong voltage value
mmc: tmio_mmc_dma: don't print invalid DMA cookie
mmc: core: Enable tuning according to the actual timing
mmc: mmci: support 8bit mode on the Nomadik
mmc: mmci: fix an ages old detection error
mmc: sd: limit SD card power limit according to cards capabilities
Pull AVR32 updates from Hans-Christian Noren Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
mmc: atmel: get rid of struct mci_dma_data
mmc: atmel-mci: restore dma on AVR32
avr32: wire up missing syscalls
avr32: wire up accept4 syscall
As struct mci_dma_data is now only used by AVR32, it is nothing but
pointless indirection. Replace it with struct dw_dma_slave in the
AVR32 platform code and with a void pointer elsewhere.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit ecb89f2f5f ("mmc: atmel-mci: remove compat for non DT board
when requesting dma chan") broke dma on AVR32 and any other boards not
using DT. This restores a fallback mechanism for such cases.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
The tmio_mmc_start_dma_{rx,tx} function functions contain debug
code that prints the dma cookie among other things. However,
in case we fall back to PIO mode for some reason, the cookie
variable is never initialized, and gcc warns about this:
In file included from ../include/linux/printk.h:277:0,
from ../include/linux/kernel.h:13,
from ../include/linux/list.h:8,
from ../include/linux/kobject.h:20,
from ../include/linux/device.h:17,
from ../drivers/mmc/host/tmio_mmc_dma.c:13:
../drivers/mmc/host/tmio_mmc_dma.c: In function 'tmio_mmc_start_dma':
../include/linux/dynamic_debug.h:86:3: warning: 'cookie' may be used uninitialized in this function [-Wmaybe-uninitialized]
__dynamic_dev_dbg(&descriptor, dev, fmt, \
^
../drivers/mmc/host/tmio_mmc_dma.c:128:15: note: 'cookie' was declared here
dma_cookie_t cookie;
This modifies the dev_dbg() statements so we only print the cookie
when we are already in the DMA path.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
commit 4956e10903 ("ARM: 6244/1: mmci: add variant data and default
MCICLOCK support") added variant data for ARM, U300 and Ux500 variants.
The Nomadik NHK8815/8820 variant was erroneously labeled as a U300
variant, and when the proper Nomadik variant was later introduced in
commit 34fd421349 ("ARM: 7378/1: mmci: add support for the Nomadik MMCI
variant") this was not fixes. Let's say this fixes the latter commit as
there was no proper Nomadik support until then.
Cc: stable@vger.kernel.org
Fixes: 34fd421349 ("ARM: 7378/1: mmci: add support for the Nomadik...")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Use to_platform_device() instead of open-coding it.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The misc control register is 32bit wide, the used readw/writew
accessors only mainipulate the low 16bit of this register. It
currently doesn't matter as all the bit changed are located in
the lower half, but together with the u32 variable used to hold
the contents of the register it is seriously confusing.
Switch to 32bit accessors to avoid any future breakage.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Keep the quirk bits, as Tegra30 and Tegra114 host have different levels
of support for UHS-I modes and so need different spare bits to be set,
but change the logic to be positive.
Tegra210 needs a different tuning sequence than Tegra30+. Disable
UHS modes until support for this is properly added.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This implements the UHS tuning sequence in a similar way to the one
contained in the TRM. It deviates in the way how to check if the tap
value is passing, by using the common Linux MMC function, which does
not only check for data CRC errors, but also if the received block
pattern is correct.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The Tegra30 and up TRM states that this bit should always be
programmed to 0 by driver software.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Allow the the driver to change the clock supplied from the CAR directly,
minimizing the need to divide the clock inside the SDMMC module itself.
This allows for higher clock speeds than the default 48MHz supplied to
the module and is a prerequisite to support DDR signaling modes, where
the Tegra host needs to be run with a fixed internal divider of 2 for
data to be sampled correctly. (Tegra K1 TRM v03p chapter 29.7.1.1)
Also enable the broken preset value quirk as the preset values need to
be adapted to the changed clocking. While Tegra114+ allows this through
vendor registers, there is no such way for Tegra30. Takes the easy way
out and keep things consistent between the different SoC generations by
flagging the preset registers as unusable.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
After commit 52221610dd ("mmc: sdhci: Improve external VDD regulator
support"), for the VDD is supplied via external regulators, we ignore
the code to convert a VDD voltage request into one of the standard
SDHCI voltage levels, then program it in the SDHCI_POWER_CONTROL. This
brings two issues:
1. SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON quirk isn't handled properly any
more.
2. What's more, once SDHCI_POWER_ON bit is set, some controllers such
as the sdhci-pxav3 used in marvell berlin SoCs require the voltage
levels programming in the SDHCI_POWER_CONTROL register, even the VDD
is supplied by external regulator. So the host in marvell berlin SoCs
still works fine after the commit. However, commit 3cbc6123a9 ("mmc:
sdhci: Set SDHCI_POWER_ON with external vmmc") sets the SDHCI_POWER_ON
bit, this would make the host in marvell berlin SoCs won't work any
more with external vmmc.
This patch restores the behavior when setting VDD through external
regulator by moving the call of mmc_regulator_set_ocr() to the end
of sdhci_set_power() function.
After this patch, the sdcard on Marvell Berlin SoC boards work again.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Fixes: 52221610dd ("mmc: sdhci: Improve external VDD ...")
Reviewed-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The dw_mmc driver stores the physical address of the MMIO registers
in a pointer, which requires the use of type casts, and is actually
broken if anyone ever has this device on a 32-bit SoC in registers
above 4GB. Gcc warns about this possibility when the driver is built
with ARM LPAE enabled:
mmc/host/dw_mmc.c: In function 'dw_mci_edmac_start_dma':
mmc/host/dw_mmc.c:702:17: warning: cast from pointer to integer of different size
cfg.dst_addr = (dma_addr_t)(host->phy_regs + fifo_offset);
^
mmc/host/dw_mmc-pltfm.c: In function 'dw_mci_pltfm_register':
mmc/host/dw_mmc-pltfm.c:63:19: warning: cast to pointer from integer of different size
host->phy_regs = (void *)(regs->start);
This changes the code to use resource_size_t, which gets rid of the
warning, the bug and the useless casts.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit bb08a7d489 ("mmc: usdhi6rol0: fix NULL pointer deref in debug
print") fixed one NULL pointer dereference but unfortunately introduced
another. "data" may be NULL if this is a command timeout for a command
without any data, so we should only use it if we're actually waiting for
data.
Fixes: bb08a7d489 ("mmc: usdhi6rol0: fix NULL pointer deref in debug print")
Cc: stable@vger.kernel.org # v4.3
Signed-off-by: Rabin Vincent <rabin.vincent@axis.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
If no primary handler is specified for threaded_irq then a
default one is assigned which always returns IRQ_WAKE_THREAD.
This handler requires the IRQF_ONESHOT, because the source of
interrupt is not disabled
Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
there are too many error logs shown when use CMD21/CMD19 to do tune,
and it will appear at each resume time, print out so many logs to the
uart console cost too mush time. so change it to dev_dbg.
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
sdhci has a legacy facility to prevent runtime suspend if the
bus power is on. This is needed in cases where the power to
the card is dependent on the bus power. It is controlled by
a pair of functions: sdhci_runtime_pm_bus_on() and
sdhci_runtime_pm_bus_off(). These functions use a boolean
variable 'bus_on' to ensure changes are always paired.
There is an additional check for 'runtime_suspended' which is
the problem. In fact, its use is ill-conceived as the only
requirement for the logic is that 'on' and 'off' are paired,
which is actually broken by the check, for example if the bus
power is turned on during runtime resume. So remove the check.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v3.11+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The version 3.00 SDHCI spec. was a bit unclear about the
required data alignment for 64-bit DMA, whereas the version
4.10 spec. uses different language and indicates that only
4-byte alignment is required rather than the 8-byte alignment
currently implemented. That make no difference to SD and EMMC
which invariably transfer data in sector-aligned blocks.
However with SDIO, it results in using more DMA descriptors
than necessary. Theoretically that slows DMA slightly although
DMA is not the limiting factor for throughput, so there is no
discernable impact on performance. Nevertheless, the driver
should follw the spec unless there is good reason not to, so
this patch corrects the alignment criterion.
There is a more complicated criterion for the DMA descriptor
table itself. However the table is allocated by dma_alloc_coherent()
which allocates pages (i.e. aligned to a page boundary).
For simplicity just check it is 8-byte aligned, but add a comment
that some Intel controllers actually require 8-byte alignment
even when using 32-bit DMA.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
SDHCI has built-in DMA called ADMA2. ADMA2 uses a descriptor
table to define DMA scatter-gather. Each desciptor can specify
a data length up to 65536 bytes, however the length field is
only 16-bits so zero means 65536. Consequently, putting zero
when the size is zero must not be allowed. This patch fixes
one case where zero data length could be set inadvertently.
The problem happens because unaligned data gets split and the
code did not consider that the remaining aligned portion might
be zero length. That case really only happens for SDIO because
SD and eMMC cards transfer blocks that are invariably sector-
aligned. For SDIO, access to function registers is done by
data transfer (CMD53) when the register is bigger than 1 byte.
Generally registers are 4 bytes but 2-byte registers are possible.
So DMA of 4 bytes or less can happen. When 32-bit DMA is used,
the data alignment must be 4, so 4-byte transfers won't casue a
problem, but a 2-byte transfer could. However with the introduction
of 64-bit DMA, the data alignment for 64-bit DMA was made 8 bytes,
so all 4-byte transfers not on 8-byte boundaries get "split" into
a 4-byte chunk and a 0-byte chunk, thereby hitting the bug.
In fact, a closer look at the SDHCI specs indicates that only the
descriptor table requires 8-byte alignment for 64-bit DMA. That
will be dealt with in a separate patch, but the potential for a
2-byte access remains, so this fix is needed anyway.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The driver may not be able to set the power correctly but that
is not a reason to BUG().
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
In some cases, the stronger 33 Ohm driver strength must not be used
so it is not a suitable default. Change it to the standard default
50 Ohm value.
The patch applies to v4.2+ except the file name changed. It is
drivers/mmc/host/sdhci-pci.c prior to v.4.4.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.2+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
There are no in-kernel users of the MVSDIO platform data method
(instantiating from a board file) so just delete this code and
make this a DT-only driver. We depend on OF and check that we have
an OF node in probe().
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This platform data struct is only used inside the MVSDIO driver,
nowhere else in the entire kernel. Move the struct into the
driver and delete the external header.
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
A previous patch had removed esdhc_of_platform_init() by mistake.
static void esdhc_of_platform_init(struct sdhci_host *host)
{
u32 vvn;
vvn = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS);
vvn = (vvn & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
if (vvn == VENDOR_V_22)
host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23;
if (vvn > VENDOR_V_22)
host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
}
This patch is used to fix it by add/remove some quirks according to
verdor version in probe.
Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
Fixes: f4932cfd22 ("mmc: sdhci-of-esdhc: support both BE and LE host controller")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The atmci_convert_chksize() function is no more valid for controller
version 0x600 due to the introduction of '2 data' chunk size.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
atmel-mci-regs.h is only included in atmel-mci.c so move its content in
the driver and do some cleanup in these definitions to remove checkpatch
errors.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Here we use '|=' to set the tuning-step, but before that, we should
clear the tuning-step, otherwise we could got the wrong setting.
Signed-off-by: Haibo Chen <haibo.chen@freescale.com>
Acked-by: Dong Aisheng <aisheng.dong@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When compiling the sh_mmcif driver for ARM64, we currently
get a harmless build warning:
../drivers/mmc/host/sh_mmcif.c: In function 'sh_mmcif_request_dma_one':
../drivers/mmc/host/sh_mmcif.c:417:4: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
(void *)pdata->slave_id_tx :
^
../drivers/mmc/host/sh_mmcif.c:418:4: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
(void *)pdata->slave_id_rx;
This could be worked around by adding another cast to uintptr_t, but
I decided to simplify the code a little more to avoid that. This
splits out the platform data using code into a separate function
and builds that only for CONFIG_SUPERH. This part still has a typecast
but does not need a second one. The SH platform code could be further
modified to pass a pointer directly as we do on other architectures
when we have a filter function.
The normal case is simplified further and now just calls
dma_request_slave_channel() directly without going through the
compat handling.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This is a trivial patch which fixes printed strings split across two
or more lines in the source. I tried to grep for some error output*,
but I couldn't find it easily because it was broken across multiple
lines. This patch makes my life easier.
* in particular "Timeout waiting for hardware interrupt."
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Russell King