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path: root/drivers/regulator/slg51000-regulator.c
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* regulator: slg51000: Wait after asserting CS pinKonrad Dybcio2022-11-181-0/+2
| | | | | | | | | | | | | | | | | Sony's downstream driver [1], among some other changes, adds a seemingly random 10ms usleep_range, which turned out to be necessary for the hardware to function properly on at least Sony Xperia 1 IV. Without this, I2C transactions with the SLG51000 straight up fail. Relax (10-10ms -> 10-11ms) and add the aforementioned sleep to make sure the hardware has some time to wake up. (nagara-2.0.0-mlc/vendor/semc/hardware/camera-kernel-module/) [1] https://developer.sony.com/file/download/open-source-archive-for-64-0-m-4-29/ Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20221118131035.54874-1-konrad.dybcio@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
* Merge series "Support ROHM BD9576MUF and BD9573MUF PMICs" from Matti ↵Mark Brown2020-09-171-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Vaittinen <matti.vaittinen@fi.rohmeurope.com>: Initial support for ROHM BD9576MUF and BD9573MUF PMICs. These PMICs are primarily intended to be used to power the R-Car family processors. BD9576MUF includes some additional safety features the BD9573MUF does not have. This initial version of drivers does not utilize these features and for now the SW behaviour is identical. Please note that this version of drivers is only tested on BD9576MUF but according to the data-sheets the relevant parts of registers should be same so drivers should also work on BD9573MUF. This patch series includes MFD, watchdog and regulator drivers with basic functionality such as: - Enabling and pinging the watchdog - configuring watchog timeout / window from device-tree - reading regulator states/voltages - enabling/disabling VOUT1 (VD50) when control mode B is used. This patch series does not bring interrupt support. BD9576MUF and BD9573MUF are designed to keep the IRQ line low for whole duration of error condition. IRQ can't be 'acked'. So proper IRQ support would require some IRQ limiter implementation (delayed unmask?) in order to not hog the CPU. --- Matti Vaittinen (6): dt_bindings: mfd: Add ROHM BD9576MUF and BD9573MUF PMICs dt_bindings: regulator: Add ROHM BD9576MUF and BD9573MUF PMICs mfd: Support ROHM BD9576MUF and BD9573MUF wdt: Support wdt on ROHM BD9576MUF and BD9573MUF regulator: Support ROHM BD9576MUF and BD9573MUF MAINTAINERS: Add ROHM BD9576MUF and BD9573MUF drivers .../bindings/mfd/rohm,bd9576-pmic.yaml | 129 +++++++ .../regulator/rohm,bd9576-regulator.yaml | 33 ++ MAINTAINERS | 4 + drivers/mfd/Kconfig | 11 + drivers/mfd/Makefile | 1 + drivers/mfd/rohm-bd9576.c | 130 +++++++ drivers/regulator/Kconfig | 10 + drivers/regulator/Makefile | 1 + drivers/regulator/bd9576-regulator.c | 337 ++++++++++++++++++ drivers/watchdog/Kconfig | 13 + drivers/watchdog/Makefile | 1 + drivers/watchdog/bd9576_wdt.c | 295 +++++++++++++++ include/linux/mfd/rohm-bd957x.h | 61 ++++ include/linux/mfd/rohm-generic.h | 2 + 14 files changed, 1028 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd9576-regulator.yaml create mode 100644 drivers/mfd/rohm-bd9576.c create mode 100644 drivers/regulator/bd9576-regulator.c create mode 100644 drivers/watchdog/bd9576_wdt.c create mode 100644 include/linux/mfd/rohm-bd957x.h base-commit: f4d51dffc6c01a9e94650d95ce0104964f8ae822 -- 2.21.0 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]
| * treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva2020-08-231-1/+1
| | | | | | | | | | | | | | | | | | | | Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
* | regulator: remove locking around regulator_notifier_call_chain()Michał Mirosław2020-09-071-4/+0
|/ | | | | | | | | | | regulator_notifier_call_chain() doesn't need rdev lock and rdev's existence is assumed in the code anyway. Remove the locks from drivers. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/42393f66dcc4d80dcd9797be45216b4035aa96cb.1597032945.git.mirq-linux@rere.qmqm.pl Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: Convert i2c drivers to use .probe_newAxel Lin2020-01-131-3/+2
| | | | | | | | | | Use the new .probe_new for i2c drivers. These drivers do not use const struct i2c_device_id * argument, so convert them to utilise the simplified i2c driver registration. Signed-off-by: Axel Lin <axel.lin@ingics.com> Link: https://lore.kernel.org/r/20200109155808.22003-1-axel.lin@ingics.com Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: slg51000: switch to using fwnode_gpiod_get_indexDmitry Torokhov2019-10-071-8/+5
| | | | | | | | | | | | | | | | | | | devm_gpiod_get_from_of_node() is being retired in favor of [devm_]fwnode_gpiod_get_index(), that behaves similar to devm_gpiod_get_index(), but can work with arbitrary firmware node. It will also be able to support secondary software nodes. Let's switch this driver over. Note that now that we have a good non-devm API for getting GPIO from arbitrary firmware node, there is no reason to use devm API here as regulator core takes care of managing lifetime of "enable" GPIO and we were immediately detaching requested GPIO from devm anyway. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20191004231017.130290-3-dmitry.torokhov@gmail.com Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: slg51000: use devm_gpiod_get_optional() in probeDmitry Torokhov2019-09-091-7/+8
| | | | | | | | | | | | | | | | | | | | The CS GPIO line is clearly optional GPIO (and marked as such in the binding document) and we should handle it accordingly. The current code treats all errors as meaning that there is no GPIO defined, which is wrong, as it does not handle deferrals raised by the underlying code properly, nor does it recognize non-existing GPIO from any other initialization error. As far as I can see the only reason the driver, unlike all others, is using OF-specific devm_gpiod_get_from_of_node() so that it can assign a custom label to the selected GPIO line. Given that noone else needs that, it should not be doing that either. Let's switch to using more appropriate devm_gpiod_get_optional(). Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20190904214200.GA66118@dtor-ws Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: slg51000: Fix a couple NULL vs IS_ERR() checksDan Carpenter2019-08-081-2/+2
| | | | | | | | | | The devm_gpiod_get_from_of_node() function never returns NULL, it returns error pointers on error. Fixes: a867bde3dd03 ("regulator: slg51000: add slg51000 regulator driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20190808103335.GD30506@mwanda Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: slg51000: Remove unneeded regl_pdata from struct slg51000Axel Lin2019-05-241-11/+6
| | | | | | | | Just use a local variable *ena_gpiod in slg51000_of_parse_cb instead. With this change, the struct slg51000_pdata can be removed. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: slg51000: Constify slg51000_regl_ops and slg51000_switch_opsAxel Lin2019-05-241-2/+2
| | | | | | | | These regulator_ops variables never need to be modified, make them const so compiler can put them to .rodata. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* regulator: slg51000: add slg51000 regulator driverEric Jeong2019-05-131-0/+528
Adding regulator driver for the device Dialog SLG51000. The SLG51000 device contains seven compact and customizable low dropout regulators and is designed for high performance camera modules and other small multi-rail applications. Signed-off-by: Eric Jeong <eric.jeong.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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