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Our chosen byte swapping, which is what firmware already uses, is to
do readl/writel by normal lw/sw intructions (data invariance). This
also means we need to mangle addresses for u8 and u16 accesses. The
mangling for 16bit has been done aready, but 8bit one was missing.
Correcting this causes different addresses for accesses to the
SuperIO and local bus of the IOC3 chip. This is fixed by changing
byte order in ioc3 and m48rtc_rtc structs.
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-rtc@vger.kernel.org
This header file now only includes the cros_ec_dev struct, however, is the
'include/linux/platform_data/cros_ec_proto.h' who contains the definition of
all the Chrome OS EC related structs. There is no reason to have a
separate include for this struct so move to the place where other
structs are defined. That way, we can remove the include itself, but also
simplify the common pattern
#include <linux/mfd/cros_ec.h>
#include <linux/platform_data/cros_ec_proto.h>
for a single include
#include <linux/platform_data/cros_ec_proto.h>
The changes to remove the cros_ec.h include were generated with the
following shell script:
git grep -l "<linux/mfd/cros_ec.h>" | xargs sed -i '/<linux\/mfd\/cros_ec.h>/d'
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
ioremap has provided non-cached semantics by default since the Linux 2.6
days, so remove the additional ioremap_nocache interface.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
struct i2c_client can be referenced from the device structure, so this
doesn't need to have it in struct rx8025_data.
Remove struct i2c_client from struct rx8025_data.
CC: Alessandro Zummo <a.zummo@towertech.it>
CC: Alexandre Belloni <alexandre.belloni@bootlin.com>
CC: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Link: https://lore.kernel.org/r/20191218081624.3307752-1-iwamatsu@nigauri.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The RTC has a valid bit in the seconds register that indicates whether
power was lost since the pevious time set. This bit is currently read
once at probe time, cached and updated with set_time.
Howeever, caching the bit may prevent detecting power loss at runtime
(which can happen if the RTC's supply is distinct from the the platform's).
Writing the seconds register when setting time will clear the bit,
so there should be no downside in reading the bit directly instead of
caching it.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://lore.kernel.org/r/20191212153111.966923-2-paul.kocialkowski@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The current code returns -EPERM when the voltage loss bit is set.
Since the bit indicates that the time value is not valid, return
-EINVAL instead, which is the appropriate error code for this
situation.
Fixes: dcaf03849352 ("rtc: add hym8563 rtc-driver")
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://lore.kernel.org/r/20191212153111.966923-1-paul.kocialkowski@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
In the current code, the return value of devm_request_threaded_irq may be
returned. This fixes it.
CC: Alessandro Zummo <a.zummo@towertech.it>
CC: Alexandre Belloni <alexandre.belloni@bootlin.com>
CC: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Link: https://lore.kernel.org/r/20191217121231.2698817-2-iwamatsu@nigauri.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The compatibles have been marked obsolete for more that 2 years, drop them
now. Note that this doesn't currently prevent the driver from probing
because the i2c core will still match using the i2c_device_id table.
Link: https://lore.kernel.org/r/20191212230239.65784-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The RV3029 can report three different conditions: power on, voltage dropped
and data is lost and voltage is low and temperature compensation has
stopped. The first two conditions amount to the same status, the RTC data
is invalid.
VLOW1 has to be cleared manually to resume temperature compensation, this
is achieved using RTC_VL_CLEAR.
Link: https://lore.kernel.org/r/20191214221022.622482-11-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
There is no point in having 2 indirections before calling regmap_read,
especially since rv3029_get_sr also changes the return value without any
good reason. Call regmap_read directly.
Link: https://lore.kernel.org/r/20191214221022.622482-7-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
There is no lock preventing concurrent access to the status register from
bth the rtc subsystem and the hwmon subsystem. Use regmap_update_bits to
ensure updating RV3029_STATUS is properly locked.
Link: https://lore.kernel.org/r/20191214221022.622482-5-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Instead of trying to validate the accessed registers in custom functions,
let regmap handle that. This allows to defines all the holes in the
register range and gives access to the regmap debugfs register dump.
Link: https://lore.kernel.org/r/20191214221022.622482-3-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Remove RTC_VL_CLR handling because it is a disservice to userspace as it
removes the important information that the RTC data is invalid. This may
lead userspace to set an invalid system time later on.
Link: https://lore.kernel.org/r/20191214220259.621996-17-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
RV8803_FLAG_V1F means the voltage is too low to keep the temperature
compensation running and the accuracy of the RTC is affected.
RV8803_FLAG_V2F means the voltage dropped so low that data is now invalid.
Link: https://lore.kernel.org/r/20191214220259.621996-16-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Stop clearing RV8803_FLAG_V2F in RTC_VL_CLR because it is a disservice to
userspace as it removes the important information that the RTC data is
invalid. This may lead userspace to set an invalid system time later on.
Link: https://lore.kernel.org/r/20191214220259.621996-15-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Remove RTC_VL_CLR handling because it is a disservice to userspace as it
removes the important information that the RTC data is invalid. This may
lead userspace to set an invalid system time later on.
Link: https://lore.kernel.org/r/20191214220259.621996-13-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Remove RTC_VL_CLR handling because it is a disservice to userspace as it
removes the important information that the RTC data is invalid. This may
lead userspace to set an invalid system time later on.
Link: https://lore.kernel.org/r/20191214220259.621996-11-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
voltage_low is only updated when reading the time, this means that using
RTC_VL_READ will miss the VL flag if the time has not been read before
using the ioctl. Always read the status from the hardware.
Link: https://lore.kernel.org/r/20191214220259.621996-9-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Remove RTC_VL_CLR handling because it is a disservice to userspace as it
removes the important information that the RTC data is invalid. This may
lead userspace to set an invalid system time later on.
Link: https://lore.kernel.org/r/20191214220259.621996-7-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Alarm registers high byte was reserved for other functions.
This add mask in alarm registers operation functions.
This also fix error condition in interrupt handler.
Fixes: fc2979118f3f ("rtc: mediatek: Add MT6397 RTC driver")
Signed-off-by: Ran Bi <ran.bi@mediatek.com>
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Link: https://lore.kernel.org/r/1576057435-3561-6-git-send-email-hsin-hsiung.wang@mediatek.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The current use of mode flags to us SPI_MODE_3 and
SPI_CS_HIGH is fragile: it overwrites anything already
assigned by the SPI core. Change it thusly:
- Just |= the SPI_MODE_3 so we keep other flags
- Assign ^= SPI_CS_HIGH since we might be active high
already, and that is usually the case with GPIOs used
for chip select, even if they are in practice active low.
Add a comment clarifying why ^= SPI_CS_HIGH is the right
choice here.
Reported-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20191204225731.20306-1-linus.walleij@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
When support for the R40 in the rtc-sun6i driver was split out for a
separate compatible string, only the RTC half was covered, and not the
clock half. Unfortunately this results in the whole driver not working,
as the RTC half expects the clock half to have been initialized.
Add support for the clock part as well. The clock part is like the H3,
but does not need to export the internal oscillator, nor does it have
a gateable LOSC external output.
This fixes issues with WiFi and Bluetooth not working on the BPI M2U.
Fixes: d6624cc75021 ("rtc: sun6i: Add R40 compatible")
Cc: <stable@vger.kernel.org> # 5.3.x
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20191205085054.6049-1-wens@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The resume() forgets to call clk_disable_unprepare() when failed.
Add the missed call to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Reviewed-by: Amelie Delaunay <amelie.delaunay@st.com>
Link: https://lore.kernel.org/r/20191205160655.32188-1-hslester96@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
