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2022-05-25Merge back reboot/poweroff notifiers rework for 5.19-rc1.Rafael J. Wysocki1-25/+17
2022-05-19regulator: pfuze100: Use devm_register_sys_off_handler()Dmitry Osipenko1-25/+17
Use devm_register_sys_off_handler() that replaces global pm_power_off_prepare variable and allows to register multiple power-off handlers. Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-05-17Merge remote-tracking branch 'regulator/for-5.19' into regulator-nextMark Brown14-57/+915
2022-05-17regulator: scmi: Fix refcount leak in scmi_regulator_probeMiaoqian Lin1-1/+1
of_find_node_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak. Fixes: 0fbeae70ee7c ("regulator: add SCMI driver") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Link: https://lore.kernel.org/r/20220516074433.32433-1-linmq006@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-11regulator: pfuze100: Fix refcount leak in pfuze_parse_regulators_dtMiaoqian Lin1-0/+2
of_node_get() returns a node with refcount incremented. Calling of_node_put() to drop the reference when not needed anymore. Fixes: 3784b6d64dc5 ("regulator: pfuze100: add pfuze100 regulator driver") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Link: https://lore.kernel.org/r/20220511113506.45185-1-linmq006@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-09regulator: qcom_smd: Fix up PM8950 regulator configurationKonrad Dybcio1-18/+17
Following changes have been made: - S5, L4, L18, L20 and L21 were removed (S5 is managed by SPMI, whereas the rest seems not to exist [or at least it's blocked by Sony Loire /MSM8956/ RPM firmware]) - Supply maps have were adjusted to reflect regulator changes. Fixes: e44adca5fa25 ("regulator: qcom_smd: Add PM8950 regulators") Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org> Link: https://lore.kernel.org/r/20220430163753.609909-1-konrad.dybcio@somainline.org Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-05regulator: core: Fix enable_count imbalance with EXCLUSIVE_GETZev Weiss1-2/+5
Since the introduction of regulator->enable_count, a driver that did an exclusive get on an already-enabled regulator would end up with enable_count initialized to 0 but rdev->use_count initialized to 1. With that starting point the regulator is effectively stuck enabled, because if the driver attempted to disable it it would fail the enable_count underflow check in _regulator_handle_consumer_disable(). The EXCLUSIVE_GET path in _regulator_get() now initializes enable_count along with rdev->use_count so that the regulator can be disabled without underflowing the former. Signed-off-by: Zev Weiss <zev@bewilderbeest.net> Fixes: 5451781dadf85 ("regulator: core: Only count load for enabled consumers") Link: https://lore.kernel.org/r/20220505043152.12933-1-zev@bewilderbeest.net Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-04regulator: core: Add error flags to sysfs attributesZev Weiss1-0/+45
If a regulator provides a get_error_flags() operation, its sysfs attributes will now include an entry for each defined REGULATOR_ERROR_* flag. Signed-off-by: Zev Weiss <zev@bewilderbeest.net> Link: https://lore.kernel.org/r/20220504065252.6955-3-zev@bewilderbeest.net Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-03regulator: pca9450: Enable DVS control via PMIC_STBY_REQRickard x Andersson1-0/+8
When DVS is enabled via the devicetree properties "nxp,dvs-run-voltage" and "nxp,dvs-standby-voltage" then also the bit that enables DVS control via PMIC_STBY_REQ pin should be set. Signed-off-by: Rickard x Andersson <rickaran@axis.com> Link: https://lore.kernel.org/r/20220429072211.24957-5-rickaran@axis.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-03regulator: pca9450: Make warm reset on WDOG_B assertionRickard x Andersson1-1/+7
The default configuration of the PMIC behavior makes the PMIC power cycle most regulators on WDOG_B assertion. This power cycling causes the memory contents of OCRAM to be lost. Some systems neeeds some memory that survives reset and reboot, therefore this patch is created. Signed-off-by: Rickard x Andersson <rickaran@axis.com> Link: https://lore.kernel.org/r/20220429072211.24957-4-rickaran@axis.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-03regulator: pca9450: Make I2C Level Translator configurablePer-Daniel Olsson1-0/+11
Make the I2C Level Translator included in PCA9450 configurable from devicetree. The reset state is off. By setting nxp,i2c-lt-enable, the I2C Level Translator will be enabled while in STANDBY or RUN state. Signed-off-by: Per-Daniel Olsson <perdo@axis.com> Signed-off-by: Rickard x Andersson <rickaran@axis.com> Link: https://lore.kernel.org/r/20220429072211.24957-2-rickaran@axis.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-26regulator: sm5703-regulator: Add regulators support for SM5703 MFDMarkuss Broks3-0/+175
Regulators block of SM5703 controls several voltage regulators which are used to power various components. There are 3 LDO outputs ranging from 1.5 to 3.3V, a buck regulator ranging from 1V to 3V, two fixed voltage LDO regulators for powering the USB devices and one high-power fixed voltage LDO line (actually two lines) meant to power high-power USB devices. Signed-off-by: Markuss Broks <markuss.broks@gmail.com> Link: https://lore.kernel.org/r/20220423085319.483524-6-markuss.broks@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25regulator: richtek,rt4801: parse GPIOs per regulatorKrzysztof Kozlowski1-11/+38
Having one enable-gpios property for all regulators is discouraged and instead, similarly to regulator core ena_gpiod feature, each GPIO should be present in each regulator node. Add support for parsing such GPIOs, keeping backwards compatibility. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Tested-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/20220425072455.27356-3-krzysztof.kozlowski@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-21regulator: core: Sleep (not delay) in set_voltage()Brian Norris1-6/+1
These delays can be relatively large (e.g., hundreds of microseconds to several milliseconds on RK3399 Gru systems). Per Documentation/timers/timers-howto.rst, that should usually use a sleeping delay. Let's use the existing regulator delay helper to handle both large and small delays appropriately. This avoids burning a bunch of CPU time and hurting scheduling latencies when hitting regulators a lot (e.g., during cpufreq). The sleep vs. delay issue choice has been made differently over time -- early versions of RK3399 Gru PWM-regulator support used usleep_range() in pwm-regulator.c. More of this got moved into the regulator core, in commits like: 73e705bf81ce regulator: core: Add set_voltage_time op At the same time, the sleep turned into a delay. It's OK to sleep in _regulator_do_set_voltage(), as we aren't in an atomic context. (All our callers grab various mutexes already.) I avoid using fsleep() because it uses a usleep_range() of [N to N*2], and usleep_range() very commonly biases to the high end of the range. We don't want to double the expected delay, especially for long delays. Signed-off-by: Brian Norris <briannorris@chromium.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20220420141511.v2.2.If0fc61a894f537b052ca41572aff098cf8e7e673@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-21regulator: core: Rename _regulator_enable_delay()Brian Norris1-8/+8
I want to use it in other contexts besides _regulator_do_enable(). Signed-off-by: Brian Norris <briannorris@chromium.org> Link: https://lore.kernel.org/r/20220420141511.v2.1.I31ef0014c9597d53722ab513890f839f357fdfb3@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-21regulator: da9121: Fix uninit-value in da9121_assign_chip_model()Wei Yongjun1-0/+2
KASAN report slab-out-of-bounds in __regmap_init as follows: BUG: KASAN: slab-out-of-bounds in __regmap_init drivers/base/regmap/regmap.c:841 Read of size 1 at addr ffff88803678cdf1 by task xrun/9137 CPU: 0 PID: 9137 Comm: xrun Tainted: G W 5.18.0-rc2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xe8/0x15a lib/dump_stack.c:88 print_report.cold+0xcd/0x69b mm/kasan/report.c:313 kasan_report+0x8e/0xc0 mm/kasan/report.c:491 __regmap_init+0x4540/0x4ba0 drivers/base/regmap/regmap.c:841 __devm_regmap_init+0x7a/0x100 drivers/base/regmap/regmap.c:1266 __devm_regmap_init_i2c+0x65/0x80 drivers/base/regmap/regmap-i2c.c:394 da9121_i2c_probe+0x386/0x6d1 drivers/regulator/da9121-regulator.c:1039 i2c_device_probe+0x959/0xac0 drivers/i2c/i2c-core-base.c:563 This happend when da9121 device is probe by da9121_i2c_id, but with invalid dts. Thus, chip->subvariant_id is set to -EINVAL, and later da9121_assign_chip_model() will access 'regmap' without init it. Fix it by return -EINVAL from da9121_assign_chip_model() if 'chip->subvariant_id' is invalid. Fixes: f3fbd5566f6a ("regulator: da9121: Add device variants") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Adam Ward <Adam.Ward.Opensource@diasemi.com> Link: https://lore.kernel.org/r/20220421090335.1876149-1-weiyongjun1@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19regulator: stm32-vrefbuf: using pm_runtime_resume_and_get instead of ↵Minghao Chi1-20/+10
pm_runtime_get_sync Using pm_runtime_resume_and_get is more appropriate for simplifing code Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Link: https://lore.kernel.org/r/20220412071030.2532230-1-chi.minghao@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-07regulator Add Richtek RT5759 buck converter supportMark Brown3-0/+380
Merge series from cy_huang <u0084500@gmail.com>: This patch series add Richtek RT5759 buck converter support.
2022-04-06regulator: rpi-panel-attiny: Get rid of duplicate of_node assignmentAndy Shevchenko1-1/+0
GPIO library does copy the of_node from the parent device of the GPIO chip, there is no need to repeat this in the individual drivers. Remove these assignment all at once. For the details one may look into the of_gpio_dev_init() implementation. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220325184508.45670-1-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-05regulator: Add support for MediaTek PMIC MT6366Mark Brown1-5/+208
Merge series from Johnson Wang <johnson.wang@mediatek.com>: This patchset adds support for MediaTek PMIC MT6366. MT6366 is the primary PMIC for MT8186 and probably other SOCs.
2022-04-04regulator: mt6366: Add support for MT6366 regulatorJohnson Wang1-5/+208
The MT6366 is a regulator found on boards based on MediaTek MT8186 and probably other SoCs. It is a so called pmic and connects as a slave to SoC using SPI, wrapped inside the pmic-wrapper. Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Johnson Wang <johnson.wang@mediatek.com> Link: https://lore.kernel.org/r/20220401080212.27383-2-johnson.wang@mediatek.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-04regulator: atc260x: Fix missing active_discharge_on settingAxel Lin1-0/+1
Without active_discharge_on setting, the SWITCH1 discharge enable control is always disabled. Fix it. Fixes: 3b15ccac161a ("regulator: Add regulator driver for ATC260x PMICs") Signed-off-by: Axel Lin <axel.lin@ingics.com> Link: https://lore.kernel.org/r/20220403132235.123727-1-axel.lin@ingics.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-04regulator: Flag uncontrollable regulators as always_onMark Brown1-0/+18
While we currently assume that regulators with no control available are just uncontionally enabled this isn't always as clearly displayed to users as is desirable, for example the code for disabling unused regulators will log that it is about to disable them. Clean this up a bit by setting always_on during constraint evaluation if we have no available mechanism for controlling the regualtor so things that check the constraint will do the right thing. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220325144637.1543496-1-broonie@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-04regulator: fixed: Remove print on allocation failureMark Brown1-4/+1
OOMs are very verbose, we don't need to print an additional error message when we fail to allocate. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220324201854.3107077-1-broonie@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-04regulator: rt5759: Add support for Richtek RT5759 DCDC converterChiYuan Huang3-0/+380
Add support for Richtek RT5759 high-performance DCDC converter. Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/1648294788-11758-3-git-send-email-u0084500@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-04regulator: rtq2134: Fix missing active_discharge_on settingAxel Lin1-0/+1
The active_discharge_on setting was missed, so output discharge resistor is always disabled. Fix it. Fixes: 0555d41497de ("regulator: rtq2134: Add support for Richtek RTQ2134 SubPMIC") Signed-off-by: Axel Lin <axel.lin@ingics.com> Link: https://lore.kernel.org/r/20220404022514.449231-1-axel.lin@ingics.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-04regulator: wm8994: Add an off-on delay for WM8994 variantJonathan Bakker1-3/+39
As per Table 130 of the wm8994 datasheet at [1], there is an off-on delay for LDO1 and LDO2. In the wm8958 datasheet [2], I could not find any reference to it. I could not find a wm1811 datasheet to double-check there, but as no one has complained presumably it works without it. This solves the issue on Samsung Aries boards with a wm8994 where register writes fail when the device is powered off and back-on quickly. [1] https://statics.cirrus.com/pubs/proDatasheet/WM8994_Rev4.6.pdf [2] https://statics.cirrus.com/pubs/proDatasheet/WM8958_v3.5.pdf Signed-off-by: Jonathan Bakker <xc-racer2@live.ca> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/CY4PR04MB056771CFB80DC447C30D5A31CB1D9@CY4PR04MB0567.namprd04.prod.outlook.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-30Merge tag 'regulator-fix-v5.18' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "A couple of fixes for the rt4831 driver which fix features that didn't work due to incomplete description of the register configuration" * tag 'regulator-fix-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: rt4831: Add active_discharge_on to fix discharge API regulator: rt4831: Add bypass mask to fix set_bypass API work
2022-03-25Merge tag 'mfd-next-5.18' of ↵Linus Torvalds2-3/+5
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "New Drivers: - Add support for Maxim MAX77714 PMIC Removed Drivers: - Remove support for ST-Ericsson AB8500 DebugFS New Device Support: - Add support for Silergy SY7636A to Simple MFD I2C - Add support for MediaTek MT6366 PMIC to MT6358 IRQ - Add support for Charger to Intel PMIC CRC - Add support for Raptor Lake to Intel LPSS PCI New Functionality: - Add support for Reboot to Rockchip RK808 Fix-ups: - Device Tree changes (includcing YAML conversion) for silergy,sy7636a, maxim,max77843, google,cros-ec, maxim,max14577, maxim,max77802, maxim,max77714, qcom,tcsr, qcom,spmi-pmic, stericsson,ab8500, stericsson,db8500-prcmu, samsung,exynos5433-lpass, mt6397, syscon, brcm,cru - Visible to menuconfig; simple-mfd-i2c - Clean-up or clarify code; max77686, intel_soc_pmic_crc - Improve error handling; mc13xxx-core, stmfx, asic3 - Pass device information to child devices; iqs62x, intel-lpss-acpi - Individually identify IRQ domains; intel_soc_pmic_core - Remove superfluous code; dbx500-prcmu, exynos-lpass - Staticify and constify; arizona-i2c - Mark sometimes used data as __maybe_unused; atmel-flexcom - Account for different ACPI tables on AOSP/Windows platforms; arizona-spi - Use provided (platform) APIs; ab8500-core - Trivial (whitespace, spelling); rohm-bd9576" * tag 'mfd-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (50 commits) dt-bindings: mfd: syscon: Add microchip,lan966x-cpu-syscon compatible mfd: bd9576: fix typos in comments mfd: Use platform_get_irq() to get the interrupt mfd: db8500-prcmu: Remove unused inline function mfd: arizona-spi: Add Android board ACPI table handling mfd: arizona-spi: Split Windows ACPI init code into its own function mfd: asic3: Add missing iounmap() on error asic3_mfd_probe MAINTAINERS: Rectify entry for ROHM MULTIFUNCTION BD9571MWV-M PMIC DEVICE DRIVERS mfd: intel-lpss: Provide an SSP type to the driver dt-bindings: mfd: brcm,cru: Rename pinctrl node dt-bindings: Add compatibles for undocumented trivial syscons mfd: atmel-flexcom: Fix compilation warning dt-bindings: mfd: Add compatible for the MediaTek MT6366 PMIC dt-bindings: mfd: samsung,exynos5433-lpass: Convert to dtschema mfd: exynos-lpass: Drop unneeded syscon.h include mfd: intel-lpss: Add Intel Raptor Lake PCH-S PCI IDs mfd: ab8500: Drop debugfs module mfd: sta2x11: Use GFP_KERNEL instead of GFP_ATOMIC mfd: ab8500: Rewrite bindings in YAML mfd: qcom-spmi-pmic: Add pm8953 compatible ...
2022-03-25regulator: rt4831: Add active_discharge_on to fix discharge APIChiYuan Huang1-0/+2
To use set_discharge helper function, active_discharge_on need to be added. Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/1648171577-9663-3-git-send-email-u0084500@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-25regulator: rt4831: Add bypass mask to fix set_bypass API workChiYuan Huang1-0/+1
To use set/get_bypass helper function, bypass mask need to be specified. Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/1648171577-9663-2-git-send-email-u0084500@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-21Merge tag 'regulator-v5.18' of ↵Linus Torvalds13-61/+1023
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator updates from Mark Brown: "Quite a quiet release for the regulator API, mainly a few new drivers plus a lot of fixes for the Raspberry Pi panel driver. There's also a SPI commit in here which I managed to apply to the wrong tree and then didn't notice until there were too many commits on top of it, sorry about that. - Make it easier to use the virtual consumer test driver with DT systems. - Substantial overhaul providing various fixes and robustness improvements for the Raspberry Pi panel driver. - Support for Qualcomm PMX65 and SDX65, Richtek RT5190A, and Texas Instruments TPS62864x" * tag 'regulator-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (26 commits) regulator: qcom-rpmh: Add support for SDX65 regulator: dt-bindings: Add PMX65 compatibles regulator: vctrl: Use min() instead of doing it manually regulator: rt5190a: Add support for Richtek RT5190A PMIC regulator: Add bindings for Richtek RT5190A PMIC regulator: Convert TPS62360 binding to json-schema regulator: cleanup comments regulator: virtual: add devicetree support regulator: virtual: warn against production use regulator: virtual: use dev_err_probe() regulator: tps62864: Fix bindings for SW property regulator: Add support for TPS6286x regulator: Add bindings for TPS62864x regulator/rpi-panel-attiny: Use two transactions for I2C read regulator/rpi-panel-attiny: Use the regmap cache regulator: rpi-panel: Remove get_brightness hook regulator: rpi-panel: Add GPIO control for panel and touch resets regulator: rpi-panel: Convert to drive lines directly regulator: rpi-panel: Ensure the backlight is off during probe. regulator: rpi-panel: Serialise operations. ...
2022-03-18regulator: qcom-rpmh: Add support for SDX65Rohit Agarwal1-0/+37
Add support from RPMH regulators found in SDX65 platform. Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com> Link: https://lore.kernel.org/r/1647410837-22537-3-git-send-email-quic_rohiagar@quicinc.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-15regulator: vctrl: Use min() instead of doing it manuallyHaowen Bai1-4/+1
Fix following coccicheck warning: drivers/regulator/vctrl-regulator.c:188:15-17: WARNING opportunity for max() Signed-off-by: Haowen Bai <baihaowen@meizu.com> Link: https://lore.kernel.org/r/1647315190-16139-1-git-send-email-baihaowen@meizu.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-09regulator: rt5190a: Add support for Richtek RT5190A PMICChiYuan Huang3-0/+524
Add support for Richtek RT5190A PMIC. Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/1646812903-32496-3-git-send-email-u0084500@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-07regulator: cleanup commentsTom Rix4-6/+6
For spdx Remove leading space, add space after // Replacements overriden to overridden Calulate to Calculate addional to additional regulatior to regulator devive to device Signed-off-by: Tom Rix <trix@redhat.com> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20220305162438.689442-1-trix@redhat.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-02regulator: virtual: add devicetree supportVincent Whitchurch1-0/+18
The reg-virt-consumer is very useful for development and testing of regulator drivers since it allows voltages and modes to be set from userspace. However, it currently requires platform data so it cannot be used without patching the kernel. Add support for probing it from the devicetree to remedy this. Since this driver is only meant for testing and is a purely software construct, no binding documentation is added. Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Link: https://lore.kernel.org/r/20220301111831.3742383-4-vincent.whitchurch@axis.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-02regulator: virtual: warn against production useVincent Whitchurch1-0/+13
This driver is only meant for debugging and testing. Currently, it's not possible to use it without patching the kernel since it requires platform data, but we'll be adding devicetree support, so add a loud warning to make it clear that it's still only meant for debugging and testing. Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Link: https://lore.kernel.org/r/20220301111831.3742383-3-vincent.whitchurch@axis.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-02regulator: virtual: use dev_err_probe()Vincent Whitchurch1-6/+4
Use dev_err_probe() to avoid printing spurious warnings on probe deferral. Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Link: https://lore.kernel.org/r/20220301111831.3742383-2-vincent.whitchurch@axis.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-22regulator: da9121: Remove surplus DA9141 parametersAdam Ward1-4/+0
Remove ramp_delay/enable_time values - subject to OTP, incorrect Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com> Link: https://lore.kernel.org/r/a175201b4a7ea323c6a70d77f7f6d2124bfc0bed.1645489455.git.Adam.Ward.opensource@diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-22regulator: da9121: Fix DA914x voltage valueAdam Ward1-1/+1
Update DA9141/2 max voltage to match spec change Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com> Link: https://lore.kernel.org/r/9d1ec5b6db70d27f56d05b8a0139fc0840f03e20.1645489455.git.Adam.Ward.opensource@diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-22regulator: da9121: Fix DA914x current valuesAdam Ward1-5/+5
Update DA9141/2 ranges to correct errors Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com> Link: https://lore.kernel.org/r/cd5732c5061ce49dcfbcebb306d12ba1664b4ea6.1645489455.git.Adam.Ward.opensource@diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-08regulator: Add support for TPS6286xVincent Whitchurch3-0/+169
TI's TPS62864/TPS6286/TPS62868/TPS62869 are high-frequency synchronous step-down converters controlled via I2C. There are differences in the electrical characteristics and packaging between the variants, but the register interfaces are identical. Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Link: https://lore.kernel.org/r/20220204155241.576342-3-vincent.whitchurch@axis.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-08regulator: core: fix false positive in regulator_late_cleanup()Oliver Barta1-10/+3
The check done by regulator_late_cleanup() to detect whether a regulator is on was inconsistent with the check done by _regulator_is_enabled(). While _regulator_is_enabled() takes the enable GPIO into account, regulator_late_cleanup() was not doing that. This resulted in a false positive, e.g. when a GPIO-controlled fixed regulator was used, which was not enabled at boot time, e.g. reg_disp_1v2: reg_disp_1v2 { compatible = "regulator-fixed"; regulator-name = "display_1v2"; regulator-min-microvolt = <1200000>; regulator-max-microvolt = <1200000>; gpio = <&tlmm 148 0>; enable-active-high; }; Such regulator doesn't have an is_enabled() operation. Nevertheless it's state can be determined based on the enable GPIO. The check in regulator_late_cleanup() wrongly assumed that the regulator is on and tried to disable it. Signed-off-by: Oliver Barta <oliver.barta@aptiv.com> Link: https://lore.kernel.org/r/20220208084645.8686-1-oliver.barta@aptiv.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-08regulator: sy7636a: Remove requirement on sy7636a mfdAlistair Francis2-3/+5
Signed-off-by: Alistair Francis <alistair@alistair23.me> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2022-01-28regulator/rpi-panel-attiny: Use two transactions for I2C readDave Stevenson1-1/+34
The I2C to the Atmel is very fussy, and locks up easily on Pi0-3 particularly on reads. If running at 100kHz on Pi3, reading the ID register generally locks up the Atmel, but splitting the register select write and read into two transactions is reliable. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Link: https://lore.kernel.org/r/20220124220129.158891-10-detlev.casanova@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28regulator/rpi-panel-attiny: Use the regmap cacheDave Stevenson1-1/+1
The I2C to the Atmel is very fussy, and locks up easily on Pi0-3 particularly on reads. The LCD power status is controlled solely by this driver, so rather than reading it back from the Atmel, use the regmap cache to avoid reading values. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Link: https://lore.kernel.org/r/20220124220129.158891-9-detlev.casanova@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28regulator: rpi-panel: Remove get_brightness hookDave Stevenson1-23/+0
The driver was implementing a get_brightness function that tried to read back the PWM setting of the display to report as the current brightness. The controller on the display does not support that, therefore we end up reporting a brightness of 0, and that confuses systemd's backlight service. Remove the hook so that the framework returns the current brightness automatically. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Link: https://lore.kernel.org/r/20220124220129.158891-8-detlev.casanova@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28regulator: rpi-panel: Add GPIO control for panel and touch resetsDave Stevenson2-18/+98
We need independent control of the resets for the panel&bridge, vs the touch controller. Expose the reset lines that are on the Atmel's port C via the GPIO API so that they can be controlled appropriately. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Link: https://lore.kernel.org/r/20220124220129.158891-7-detlev.casanova@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28regulator: rpi-panel: Convert to drive lines directlyDave Stevenson1-51/+60
The Atmel was doing a load of automatic sequencing of control lines, however it was combining the touch controller's reset with the bridge/panel control. Change to control the control signals directly rather than through the automatic POWERON control. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Link: https://lore.kernel.org/r/20220124220129.158891-6-detlev.casanova@collabora.com Signed-off-by: Mark Brown <broonie@kernel.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 14:52:02 +0000