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Call the 64bit versions of rtc_tm time conversion to allow extending
support after 2106 and properly supporting the STv2 range.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200306005809.38530-3-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The PL031 and ST v1 RTC are 32bit seconds counters. STv2 is a BCD RTC
apparently going from 0000 to 9999, hopefully handling the leap days
properly until then.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200306005809.38530-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The datasheet states that 4052 is the maximum value for year. However, the
mpc5121 read_time and set_time function abuse the target time register
instead of using the broken down time so it is limited to 2106.
Link: https://lore.kernel.org/r/20200306074404.58909-3-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The RTC IRQ is requested before the struct rtc_device is allocated,
this may lead to a NULL pointer dereference in the IRQ handler.
To fix this issue, allocating the rtc_device struct before requesting
the RTC IRQ using devm_rtc_allocate_device, and use rtc_register_device
to register the RTC device.
Link: https://lore.kernel.org/r/20200306073404.56921-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The CPCAP rtc is a 14bit day counter plus a 17bit seconds counter.
Note that this failed on Nov 10 2014 so it is very likely this driver as
never been used since.
Link: https://lore.kernel.org/r/20200306015703.42101-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Both RTC IRQs are requested before the struct rtc_device is allocated,
this may lead to a NULL pointer dereference in the IRQ handler.
To fix this issue, allocating the rtc_device struct before requesting
the IRQs using devm_rtc_allocate_device, and use rtc_register_device
to register the RTC device.
Link: https://lore.kernel.org/r/20200306010146.39762-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Let the core handle offsetting and windowing the RTC range.
This rtc has hours, minutes, seconds and 16bit days. As the driver has the
RTC epoch set to year 2000, this means that the end of the range is 2^16
days minus one second later. This is Sun Jun 6 23:59:59 UTC 2179. This
is better than the currently set year 2099.
Link: https://lore.kernel.org/r/20200305215022.32533-3-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The code handling invalid alarms meaning the alarm is in the next 24 hours
is not necessary since commit f8245c2688 ("rtc: remove "RTC_ALM_SET mode"
bugs") which actually predates this driver. Since then, .set_alarm is never
called with an invalid alarm and this handling is not necessary in the
driver.
Link: https://lore.kernel.org/r/20200305215022.32533-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This RTC is a 32bit counter running at 16Hz. This overflows every eight
years and a half. However, the driver uses the SW_VALUE register to store
the overflow, extending the counter to 64bit as long as the update happens
before the overflow.
Link: https://lore.kernel.org/r/20200305160452.27808-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Fix multiple occurring interrupts for alarm interrupt. RTC module doesn't
clear the alarm interrupt status bit immediately after the interrupt is
triggered.This is due to the sticky nature of the alarm interrupt status
register. The alarm interrupt status register can be cleared only after
the second counter outruns the set alarm value. To fix multiple spurious
interrupts, disable alarm interrupt in the handler and clear the status
bit before enabling the alarm interrupt.
Fixes: 11143c19eb ("rtc: add xilinx zynqmp rtc driver")
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/1581503079-387-1-git-send-email-srinivas.neeli@xilinx.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The alignment of the continuation of the devm_ioremap() call in
sh_rtc_probe() was broken. Join the lines, as all parameters can fit on
a single line.
Fixes: 4bdc0d676a ("remove ioremap_nocache and devm_ioremap_nocache")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200212084836.9511-1-geert+renesas@glider.be
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* CrOS EC
- Refactoring of some of cros_ec's headers. include/linux/mfd/cros_ec.h now
removed, new cros_ec.h added drivers/platform/chrome which contains shared
operations of cros_ec transport drivers.
- Response tracing in cros_ec_proto
* Wilco EC
- Fix unregistration order.
- Fix keyboard backlight probing on systems without keyboard backlight
- Minor cleanup (newlines in printks, COMPILE_TEST)
* Misc
- chromeos_laptop converted to use i2c_new_scanned_device instead of
i2c_new_probed_device
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Merge tag 'tag-chrome-platform-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux
Pull chrome platform updates from Benson Leung:
"CrOS EC:
- Refactoring of some of cros_ec's headers:
include/linux/mfd/cros_ec.h now removed, new cros_ec.h added to
drivers/platform/chrome which contains shared operations of cros_ec
transport drivers.
- Response tracing in cros_ec_proto
Wilco EC:
- Fix unregistration order.
- Fix keyboard backlight probing on systems without keyboard
backlight
- Minor cleanup (newlines in printks, COMPILE_TEST)
Misc:
- chromeos_laptop converted to use i2c_new_scanned_device instead of
i2c_new_probed_device"
* tag 'tag-chrome-platform-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
platform/chrome: cros_ec: Match implementation with headers
platform/chrome: cros_ec: Drop unaligned.h include
platform/chrome: wilco_ec: Allow wilco to be compiled in COMPILE_TEST
platform/chrome: wilco_ec: Add newlines to printks
platform/chrome: wilco_ec: Fix unregistration order
cros_ec: treewide: Remove 'include/linux/mfd/cros_ec.h'
platform/chrome: cros_ec_ishtp: Make init_lock static
platform/chrome: chromeos_laptop: Convert to i2c_new_scanned_device
platform/chrome: cros_ec_lpc: Use platform_get_irq_optional() for optional IRQs
platform/chrome: cros_ec_proto: Add response tracing
platform/chrome: cros_ec_trace: Match trace commands with EC commands
Subsystem:
- the VL_READ and VL_CLR ioctls are now documented and their behavior is
unified across all the drivers.
- RTC_I2C_AND_SPI Kconfig option rework to avoid selecting both REGMAP_I2C and
REGMAP_SPI unecessarily.
Drivers:
- at91rm9200: remove deprecated procfs, add sam9x60, sama5d4 and sama5d2
compatibles.
- cmos: solve lost interrupts issue on MS Surface 3
- hym8563: return proper errno when time is invalid
- rv3029: many fixes, nvram support
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Merge tag 'rtc-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"The VL_READ and VL_CLR ioctls have been reworked to be more useful.
This will not break userspace as there are very few users and they are
using the integer value as a boolean.
Apart from that, two drivers were reworked and a few fixes here and
there for a net reduction of number of lines.
Summary:
Subsystem:
- the VL_READ and VL_CLR ioctls are now documented and their behavior
is unified across all the drivers.
- RTC_I2C_AND_SPI Kconfig option rework to avoid selecting both
REGMAP_I2C and REGMAP_SPI unecessarily.
Drivers:
- at91rm9200: remove deprecated procfs, add sam9x60, sama5d4 and
sama5d2 compatibles.
- cmos: solve lost interrupts issue on MS Surface 3
- hym8563: return proper errno when time is invalid
- rv3029: many fixes, nvram support"
* tag 'rtc-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (63 commits)
dt-bindings: rtc: at91rm9200: document clocks property
rtc: i2c/spi: Avoid inclusion of REGMAP support when not needed
rtc: Kconfig: select REGMAP_I2C when necessary
rtc: Kconfig: properly indent sd3078 entry
rtc: cmos: Refactor code by using the new dmi_get_bios_year() helper
rtc: cmos: Use predefined value for RTC IRQ on legacy x86
rtc: cmos: Stop using shared IRQ
rtc: tps6586x: Use IRQ_NOAUTOEN flag
rtc: at91rm9200: use FIELD_PREP/FIELD_GET
rtc: at91rm9200: avoid time readout in at91_rtc_setalarm
rtc: at91rm9200: move register definitions to C file
rtc: at91rm9200: add sama5d4 and sama5d2 compatibles
dt-bindings: rtc: at91rm9200: convert bindings to json-schema
rtc: at91rm9200: remove procfs information
dt-bindings: atmel, at91rm9200-rtc: add microchip, sam9x60-rtc
rtc: pcf8563: Use BIT
rtc: moxart: Convert to SPDX identifier
rtc: ds1343: Remove unused struct spi_device in struct ds1343_priv
rtc: rx8025: Remove struct i2c_client from struct rx8025_data
rtc: hym8563: Read the valid flag directly instead of caching it
...
- Add support for ROHM BD71828 PMICs and GPIOs
- Add support for Qualcomm Aqstic Audio Codecs WCD9340 and WCD9341
- New Device Support
- Add support for BD71828 to BD70528 RTC driver
- Add support for Intel's Jasper Lake to LPSS PCI
- New Functionality
- Add support for Power Key to ROHM BD71828
- Add support for Clocks to ROHM BD71828
- Add support for GPIOs to Dialog DA9062
- Add support for USB PD Notify to ChromiumOS EC
- Allow callers to specify args when requesting regmap lookup; syscon
- Fix-ups
- Improve error handling and sanity checking; atmel-hlcdc, dln2
- Device Tree support/documentation; bd71828, da9062, xylon,logicvc,
ab8500, max14577, atmel-usart
- Match devices using platform IDs; bd7xxxx
- Refactor BD718x7 regulator component; bd718x7-regulator
- Use standard interfaces/helpers; syscon, sm501
- Trivial (whitespace, spelling, etc); ab8500-core, Kconfig
- Remove unused code; db8500-prcmu, tqmx86
- Wait until boot has finished before accessing registers; madera-core
- Provide missing register value defaults; cs47l15-tables
- Allow more time for hardware to reset; madera-core
- Bug Fixes
- Fix erroneous register values; rohm-bd70528
- Fix register volatility; axp20x, rn5t618
- Fix Kconfig dependencies; MFD_MAX77650
- Fix incorrect compatible string; da9062-core
- Fix syscon_regmap_lookup_by_phandle_args() stub; syscon
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Merge tag 'mfd-next-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers:
- Add support for ROHM BD71828 PMICs and GPIOs
- Add support for Qualcomm Aqstic Audio Codecs WCD9340 and WCD9341
New Device Support:
- Add support for BD71828 to BD70528 RTC driver
- Add support for Intel's Jasper Lake to LPSS PCI
New Functionality:
- Add support for Power Key to ROHM BD71828
- Add support for Clocks to ROHM BD71828
- Add support for GPIOs to Dialog DA9062
- Add support for USB PD Notify to ChromiumOS EC
- Allow callers to specify args when requesting regmap lookup; syscon
Fix-ups:
- Improve error handling and sanity checking; atmel-hlcdc, dln2
- Device Tree support/documentation; bd71828, da9062, xylon,logicvc,
ab8500, max14577, atmel-usart
- Match devices using platform IDs; bd7xxxx
- Refactor BD718x7 regulator component; bd718x7-regulator
- Use standard interfaces/helpers; syscon, sm501
- Trivial (whitespace, spelling, etc); ab8500-core, Kconfig
- Remove unused code; db8500-prcmu, tqmx86
- Wait until boot has finished before accessing registers;
madera-core
- Provide missing register value defaults; cs47l15-tables
- Allow more time for hardware to reset; madera-core
Bug Fixes:
- Fix erroneous register values; rohm-bd70528
- Fix register volatility; axp20x, rn5t618
- Fix Kconfig dependencies; MFD_MAX77650
- Fix incorrect compatible string; da9062-core
- Fix syscon_regmap_lookup_by_phandle_args() stub; syscon"
* tag 'mfd-next-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (41 commits)
mfd: syscon: Fix syscon_regmap_lookup_by_phandle_args() dummy
mfd: wcd934x: Add support to wcd9340/wcd9341 codec
mfd: syscon: Add arguments support for syscon reference
mfd: rn5t618: Mark ADC control register volatile
dt-bindings: atmel-usart: Add microchip,sam9x60-{usart, dbgu}
dt-bindings: atmel-usart: Remove wildcard
mfd: cros_ec: Add cros-usbpd-notify subdevice
mfd: da9062: Fix watchdog compatible string
mfd: madera: Allow more time for hardware reset
mfd: cs47l15: Add missing register default
mfd: madera: Wait for boot done before accessing any other registers
mfd: Kconfig: Rename Samsung to lowercase
mfd: tqmx86: remove set but not used variable 'i2c_ien'
mfd: dbx500-prcmu: Drop DSI pll clock functions
mfd: dbx500-prcmu: Drop set_display_clocks()
mfd: max77650: Select REGMAP_IRQ in Kconfig
mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile
mfd: ab8500: Fix ab8500-clk typo
mfd: intel-lpss: Add Intel Jasper Lake PCI IDs
dt-bindings: mfd: max14577: Add reference to max14040_battery.txt descriptions
...
