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[ Upstream commit 5e6afb3832bedf420dd8e4c5b32ed85117c5087d ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: f6130be652d0 ("regulator: DA9055 regulator driver")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 978995def0f6030aa6b3b494682f673aca13881b ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: 4068e5182ada ("regulator: da9062: DA9062 regulator driver")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 275513b7695a61b75b2546406ecd0f8e3d9fc8be ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: c90456e36d9c ("regulator: pv88090: new regulator driver")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 119c4f5085c45b60cb23c5595e45d06135b89518 ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: e4ee831f949a ("regulator: Add WM831x DC-DC buck convertor support")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 1867af94cfdf37fc70fe67b3d522e78352800196 ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: 99cf3af5e2d5 ("regulator: pv88080: new regulator driver")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 29d40b4a5776ec4727c9f0e00a884423dd5e3366 ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: 69ca3e58d178 ("regulator: da9063: Add Dialog DA9063 voltage regulators support.")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 65378de3359d30ebce44762d8b8027f372b5b1c4 ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: 1028a37daa14 ("regulator: da9211: new regulator driver")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 89b2758c192c35068b07766a6830433bfbdc1f44 ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: b59320cc5a5e ("regulator: lp8755: new driver for LP8755")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit f58213637206e190453e3bd91f98f535566290a3 ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: f307a7e9b7af ("regulator: pv88060: new regulator driver")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit f132da2534ec6599c78c4adcef15340cff2e9dd9 ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: 3eb2c7ecb7ea ("regulator: Add LTC3589 support")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 769fc8d4182c1d1875db7859852afeb436714c5c ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: 37b918a034fe ("regulator: Add LTC3676 support")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit f7a621728a6a23bfd2c6ac4d3e42e1303aefde0f ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: d4d6b722e780 ("regulator: Add WM831x ISINK support")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 8be64b6d87bd47d81753b60ddafe70102ebfd76b ]
The mutex for the regulator_dev must be controlled by the caller of
the regulator_notifier_call_chain(), as described in the comment
for that function.
Failure to mutex lock and unlock surrounding the notifier call results
in a kernel WARN_ON_ONCE() which will dump a backtrace for the
regulator_notifier_call_chain() when that function call is first made.
The mutex can be controlled using the regulator_lock/unlock() API.
Fixes: d1c6b4fe668b ("regulator: Add WM831x LDO support")
Suggested-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 063773011d33bb36588a90385aa9eb75d13c6d80 ]
Lockdep reports the following issue on my setup:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((work_completion)(&(&rdev->disable_work)->work));
lock(regulator_list_mutex);
lock((work_completion)(&(&rdev->disable_work)->work));
lock(regulator_list_mutex);
The problem is that regulator_unregister takes the
regulator_list_mutex and then calls flush_work on disable_work. But
regulator_disable_work calls regulator_lock_dependent which will
also take the regulator_list_mutex. Resulting in a deadlock if the
flush_work call actually needs to flush the work.
Fix this issue by moving the flush_work outside of the
regulator_list_mutex. The list mutex is not used to guard the point at
which the delayed work is queued, so its use adds no additional safety.
Fixes: f8702f9e4aa7 ("regulator: core: Use ww_mutex for regulators locking")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 70b464918e5331e488058870fcc6821d54c4e541 upstream.
During several error paths in the function
regulator_set_voltage_unlocked() the value of 'ret' can take on negative
error values. However, in calls that go through the 'goto out' statement,
this return value is lost and return 0 is used instead, indicating a
'pass'.
There are several cases where this function should legitimately return a
fail instead of a pass: one such case includes constraints check during
voltage selection in the call to regulator_check_voltage(), which can
have -EINVAL for the case when an unsupported voltage is incorrectly
requested. In that case, -22 is expected as the return value, not 0.
Fixes: 9243a195be7a ("regulator: core: Change voltage setting path")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit f01a7beb6791f1c419424c1a6958b7d0a289c974 ]
The act8600_sudcdc_voltage_ranges setting does not match the datasheet.
The problems in below entry:
REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000),
1. The off-by-one min_sel causes wrong volatage calculation.
The min_sel should be 192.
2. According to the datasheet[1] Table 7. (on page 43):
The selector 248 (0b11111000) ~ 255 (0b11111111) are 41.400V.
Also fix off-by-one for ACT8600_SUDCDC_VOLTAGE_NUM.
[1] https://active-semi.com/wp-content/uploads/ACT8600_Datasheet.pdf
Fixes: df3a950e4e73 ("regulator: act8865: Add act8600 support")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit f3c6a1a194317f3a31ee2b2067bb0a41de64bc8b ]
Fix below build error:
drivers/regulator/mcp16502.c: In function ‘mcp16502_gpio_set_mode’:
drivers/regulator/mcp16502.c:135:3: error: implicit declaration of function ‘gpiod_set_value’; did you mean ‘gpio_set_value’? [-Werror=implicit-function-declaration]
gpiod_set_value(mcp->lpm, 0);
^~~~~~~~~~~~~~~
gpio_set_value
drivers/regulator/mcp16502.c: In function ‘mcp16502_probe’:
drivers/regulator/mcp16502.c:486:13: error: implicit declaration of function ‘devm_gpiod_get’; did you mean ‘devm_gpio_free’? [-Werror=implicit-function-declaration]
mcp->lpm = devm_gpiod_get(dev, "lpm", GPIOD_OUT_LOW);
^~~~~~~~~~~~~~
devm_gpio_free
drivers/regulator/mcp16502.c:486:40: error: ‘GPIOD_OUT_LOW’ undeclared (first use in this function); did you mean ‘GPIOF_INIT_LOW’?
mcp->lpm = devm_gpiod_get(dev, "lpm", GPIOD_OUT_LOW);
^~~~~~~~~~~~~
GPIOF_INIT_LOW
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit e5e21f70bfd3a201e627b48aed82793d1bcd6f78 ]
Take the regulator lock before applying system load.
Fixes the following lockdep splat:
[ 5.583581] WARNING: CPU: 1 PID: 16 at drivers/regulator/core.c:925 drms_uA_update+0x114/0x360
[ 5.588467] Modules linked in:
[ 5.596833] CPU: 1 PID: 16 Comm: kworker/1:0 Not tainted 5.0.0-rc6-next-20190213-00002-g0fce66ab480f #18
[ 5.599933] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[ 5.609544] Workqueue: events qcom_channel_state_worker
[ 5.616209] pstate: 60000005 (nZCv daif -PAN -UAO)
[ 5.621152] pc : drms_uA_update+0x114/0x360
[ 5.626006] lr : drms_uA_update+0x110/0x360
[ 5.630084] sp : ffff0000124b3490
[ 5.634242] x29: ffff0000124b3490 x28: ffff800005326e00
[ 5.637735] x27: ffff0000124b35f8 x26: 000000000032bc48
[ 5.643117] x25: ffff800004c7e800 x24: ffff800004c6d500
[ 5.648411] x23: ffff800004c38a80 x22: 00000000000000d1
[ 5.653706] x21: 00000000001ab3f0 x20: ffff800004c7e800
[ 5.659001] x19: ffff0000114c3000 x18: ffffffffffffffff
[ 5.664297] x17: 0000000000000000 x16: 0000000000000000
[ 5.669592] x15: ffff0000114c3808 x14: 0720072007200720
[ 5.674888] x13: 00000000199c9b28 x12: ffff80002bcccc40
[ 5.680183] x11: ffff000012286000 x10: ffff0000114c3808
[ 5.685477] x9 : 0720072007200720 x8 : ffff000010e9e808
[ 5.690772] x7 : ffff0000106da568 x6 : 0000000000000000
[ 5.696067] x5 : 0000000000000000 x4 : 0000000000000000
[ 5.701362] x3 : 0000000000000004 x2 : 0000000000000000
[ 5.706658] x1 : 0000000000000000 x0 : 0000000000000000
[ 5.711952] Call trace:
[ 5.717223] drms_uA_update+0x114/0x360
[ 5.719405] regulator_register+0xb30/0x1140
[ 5.723230] devm_regulator_register+0x4c/0xa8
[ 5.727745] rpm_reg_probe+0xfc/0x1b0
[ 5.731992] platform_drv_probe+0x50/0xa0
[ 5.735727] really_probe+0x20c/0x2b8
[ 5.739718] driver_probe_device+0x58/0x100
[ 5.743368] __device_attach_driver+0x90/0xd0
[ 5.747363] bus_for_each_drv+0x64/0xc8
[ 5.751870] __device_attach+0xd8/0x138
[ 5.755516] device_initial_probe+0x10/0x18
[ 5.759341] bus_probe_device+0x98/0xa0
[ 5.763502] device_add+0x3d0/0x640
[ 5.767319] of_device_add+0x48/0x58
[ 5.770793] of_platform_device_create_pdata+0xb0/0x128
[ 5.774629] of_platform_bus_create+0x174/0x370
[ 5.779569] of_platform_populate+0x78/0xe0
[ 5.784082] qcom_smd_rpm_probe+0x80/0xa0
[ 5.788245] rpmsg_dev_probe+0x114/0x1a0
[ 5.792411] really_probe+0x20c/0x2b8
[ 5.796401] driver_probe_device+0x58/0x100
[ 5.799964] __device_attach_driver+0x90/0xd0
[ 5.803960] bus_for_each_drv+0x64/0xc8
[ 5.808468] __device_attach+0xd8/0x138
[ 5.812115] device_initial_probe+0x10/0x18
[ 5.815936] bus_probe_device+0x98/0xa0
[ 5.820099] device_add+0x3d0/0x640
[ 5.823916] device_register+0x1c/0x28
[ 5.827391] rpmsg_register_device+0x4c/0x90
[ 5.831216] qcom_channel_state_worker+0x170/0x298
[ 5.835651] process_one_work+0x294/0x6e8
[ 5.840241] worker_thread+0x40/0x450
[ 5.844318] kthread+0x11c/0x120
[ 5.847961] ret_from_fork+0x10/0x18
[ 5.851260] irq event stamp: 9090
[ 5.854820] hardirqs last enabled at (9089): [<ffff000010160798>] console_unlock+0x3e0/0x5b0
[ 5.858086] hardirqs last disabled at (9090): [<ffff0000100817cc>] do_debug_exception+0x104/0x140
[ 5.866596] softirqs last enabled at (9086): [<ffff000010082024>] __do_softirq+0x474/0x574
[ 5.875446] softirqs last disabled at (9079): [<ffff0000100f2254>] irq_exit+0x13c/0x148
[ 5.883598] ---[ end trace 6984ef7f081afa21 ]---
Fixes: fa94e48e13a1 ("regulator: core: Apply system load even if no consumer loads")
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 28c4f730d2a44f2591cb104091da29a38dac49fe upstream.
The step values for some of the LDOs appears to be incorrect, resulting
in incorrect voltages (or at least, ones which are different from the
Samsung 3.4 vendor kernel).
Signed-off-by: Stuart Menefy <stuart.menefy@mathembedded.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0ab66b3c326ef8f77dae9f528118966365757c0c upstream.
If regulator DT node doesn't exist, its of_parse_cb callback
function isn't called. Then all values for DT properties are
filled with zero. This leads to wrong register update for
FPS and POK settings.
Signed-off-by: Jinyoung Park <jinyoungp@nvidia.com>
Signed-off-by: Mark Zhang <markz@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 56b5d4ea778c1b0989c5cdb5406d4a488144c416 upstream.
LDO35 uses 25 mV step, not 50 mV. Bucks 7 and 8 use 12.5 mV step
instead of 6.25 mV. Wrong step caused over-voltage (LDO35) or
under-voltage (buck7 and 8) if regulators were used (e.g. on Exynos5420
Arndale Octa board).
Cc: <stable@vger.kernel.org>
Fixes: cb74685ecb39 ("regulator: s2mps11: Add samsung s2mps11 regulator driver")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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tps65910_reg_set_bits() may fail. The fix checks if it fails, and if so,
returns with its error code.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Fix build error when CONFIG_REGMAP_I2C=m && CONFIG_REGULATOR_MCP16502=y.
drivers/regulator/mcp16502.o: In function `mcp16502_probe':
mcp16502.c:(.text+0xca): undefined reference to `__devm_regmap_init_i2c'
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The n_voltages setting is not set, fix it.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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mcp16502_suspend/resume_noirq
mcp16502_suspend/resume_noirq is only used by SET_NOIRQ_SYSTEM_SLEEP_PM_OPS
when CONFIG_PM_SLEEP is defined.
So use #ifdef CONFIG_PM_SLEEP instead CONFIG_SUSPEND guard.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch does the following:
- align parameter with parenthesis
- fix compile error
If CONFIG_SUSPEND is not set the dummy pm_ops
callbacks are named mcp16502_suspend and mcp16502_resume
instead of mcp16502_suspend_noirq and mcp16502_resume_noirq.
Excerpt from compile log (kbuild test robot):
In file included from include/linux/device.h:23:0,
from include/linux/gpio/driver.h:5,
from include/asm-generic/gpio.h:13,
from include/linux/gpio.h:62,
from drivers/regulator/mcp16502.c:11:
>> drivers/regulator/mcp16502.c:527:32: error: 'mcp16502_suspend_noirq'
undeclared here (not in a function); did you mean 'mcp16502_suspend'?
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mcp16502_suspend_noirq,
>> drivers/regulator/mcp16502.c:528:10: error: 'mcp16502_resume_noirq'
undeclared here (not in a function); did you mean 'mcp16502_suspend_noirq'?
mcp16502_resume_noirq)
vim +527 drivers/regulator/mcp16502.c
524
525 #ifdef CONFIG_PM
526 static const struct dev_pm_ops mcp16502_pm_ops = {
> 527 SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mcp16502_suspend_noirq,
> 528 mcp16502_resume_noirq)
529 };
530 #endif
531 static const struct i2c_device_id mcp16502_i2c_id[] = {
532 { "mcp16502", 0 },
533 { }
534 };
535 MODULE_DEVICE_TABLE(i2c, mcp16502_i2c_id);
536
Signed-off-by: Andrei Stefanescu <andrei.stefanescu@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Fixes the following sparse warning:
drivers/regulator/act8945a-regulator.c:340:1: warning:
symbol 'act8945a_pm' was not declared. Should it be static?
Fixes: 7482d6ecc68e ("regulator: act8945a-regulator: Implement PM functionalities")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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If palmas_smps_read() fails, we should not use the read data in "reg"
which may contain random value. The fix inserts a check for the return
value of palmas_smps_read(): If it fails, we return the error code
upstream and stop using "reg".
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Fix 'defined but not used' compiler warning for act8945a_suspend()
function in case CONFIG_PM_SLEEP is not defined.
Fixes: b5ebba46e694 ("regulator: act8945a-regulator: add shutdown function")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reported-by: Andrei Stefanescu <andrei.stefanescu@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Initial commit of set_ramp_delay feature was missing an assignment which
should have populated slew_rate table for dcdc2 regulator. Add it.
Fixes: d29f54df8b16 ("regulator: axp20x: add support for set_ramp_delay for AXP209")
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch adds support for entering/resuming suspend states.
It does this by setting the LPM pin of the PMIC.
When suspending the PMIC will enter the Low-power mode
when the LPM pin will be set to high. If the suspend target state
is suspend-to-mem, the PMIC will transition to Hibernate mode,
otherwise, if it is standby, it will remain in Low-power mode.
Signed-off-by: Andrei Stefanescu <andrei.stefanescu@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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In the past, there have been words on various lists that if LDO3 is
disabled in u-boot, but enabled in the DTS, the axp209 driver would
fail to continue/hang. Several enable/disable patches have been
issues to devicetree's in both the kernel and u-boot to address
this issue.
What really happened however, was that the AXP209 shuts down without
a notice and without setting an interrupt. This is caused when LDO3
gets overloaded, for example with large capacitors on the LDO3 output.
Normally, we would expect that AXP209 would source 200 mA as per
datasheet and set and trigger an interrupt when being overloaded.
For some reason however, this does not happen.
As a work-around, we use the soft-start constraint of the regulator
node to first bring up the LDO3 to the lowest possible voltage and
then enable the LDO. After that, we can set the requested voltage
as usual.
Combining this setting with the regulator-ramp-delay allows LDO3 to
enable voltage slowly and staggered, potentially reducing overall
inrush current.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The AXP209 supports ramping up voltages on several regulators such as
DCDC2 and LDO3.
This patch adds preliminary support for the regulator-ramp-delay property
for these 2 regulators. Note that the voltage ramp only works when
regulator is already enabled. E.g. when going from say 0.7 V to 3.6 V.
When turning on the regulator, no voltage ramp is performed in hardware.
What this means, is that if the bootloader brings up the voltage at 0.7 V,
the ramp delay property is properly applied. If however, the bootloader
leaves the power off, no ramp delay is applied when the power is
enabled by the regulator framework.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-4.21
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This patch adds a regulator driver for the MCP16502 PMIC.
This drivers supports basic operations through the
regulator interface such as:
- setting/reading voltage
- setting/reading operating mode
- reading current status
Signed-off-by: Andrei Stefanescu <andrei.stefanescu@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Implement shutdown method to make sure the PMIC will not enter the suspend
state when the system is shutdown.
This work is based on work done by Borris Brezillon on [1].
[1] https://www.spinics.net/lists/kernel/msg2942960.html
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Fix line over 80 chars checkpatch.pl warning.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The regulator supports a dedicated suspend mode.
Implement the appropriate ->set_suspend_xx() hooks, add support for
->set_mode(), and provide basic PM ops functionalities to setup the
regulator in a suspend state when the system is entering suspend.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
[claudiu.beznea@microchip.com: remove shutdown function, use dev_pm_ops,
fix checkpatch warning, adapt commit message, add LDO modes support,
move modes constants to active-semi,8945a-regulator.h, remove rdevs from
struct act8945a_pmic, add op_mode to act8945a_pmic]
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Unlock expert registers for act8945a.
This is based on orginal work of Boris Brezillon at [1].
[1] https://www.spinics.net/lists/kernel/msg2942960.html
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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After making sure that the regulator core always take over
handling of the GPIO descriptors, the gpiod_put()
on the errorpath of the Arizona LDO1 driver becomes
redundant.
Reported-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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After making sure that the regulator core always take over
handling of the GPIO descriptors, the gpiod_put()
on the errorpath of the wm8994 driver becomes redundant.
Reported-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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At the end of regulator_resolve_supply() we have historically turned
on our supply in some cases. This could be for one of two reasons:
1. If resolving supplies was happening before the call to
set_machine_constraints() we needed to predict if
set_machine_constraints() was going to turn the regulator on and we
needed to preemptively turn the supply on.
2. Maybe set_machine_constraints() happened before we could resolve
supplies (because we failed the first time to resolve) and thus we
might need to propagate an enable that already happened up to our
supply.
Historically regulator_resolve_supply() used _regulator_is_enabled()
to decide whether to turn on the supply.
Let's change things a little bit. Specifically:
1. Let's try to enable the supply and the regulator in the same place,
both in set_machine_constraints(). This means that we have exactly
the same logic for enabling the supply and the regulator.
2. Let's properly set use_count when we enable always-on or boot-on
regulators even for those that don't have supplies. The previous
commit 1fc12b05895e ("regulator: core: Avoid propagating to
supplies when possible") only did this right for regulators with
supplies.
3. Let's make it clear that the only time we need to enable the supply
in regulator_resolve_supply() is if the main regulator is currently
in use. By using use_count (like the rest of the code) to decide
if we're going to enable our supply we keep everything consistent.
Overall the new scheme should be cleaner and easier to reason about.
In addition to fixing regulator_summary to be more correct (because of
the more correct use_count), this change also has the effect of no
longer using _regulator_is_enabled() in this code path.
_regulator_is_enabled() could return an error code for some regulators
at bootup (like RPMh) that can't read their initial state. While one
can argue that the design of those regulators is sub-optimal, the new
logic sidesteps this brokenness. This fix in particular fixes
observed problems on Qualcomm sdm845 boards which use the
above-mentioned RPMh regulator. Those problems were made worse by
commit 1fc12b05895e ("regulator: core: Avoid propagating to supplies
when possible") because now we'd think at bootup that the SD
regulators were already enabled and we'd never try them again.
Fixes: 1fc12b05895e ("regulator: core: Avoid propagating to supplies when possible")
Reported-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-4.21
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The GPIO descriptors used by the S2MPS11 driver are retrieved
during probe() and it is really helpful to have those under
devres management because of all the errorpaths in the
intialization.
Using the new dev_gpiod_unhinge() call we can remove the
devres management of the descriptor right before handing
it over to the regulators core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The GPIO descriptors used by the TPS65090 driver are retrieved
during probe() and it is really helpful to have those under
devres management because of all the errorpaths in the
intialization.
Using the new dev_gpiod_unhinge() call we can remove the
devres management of the descriptor right before handing
it over to the regulators core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The GPIO descriptors used by the S5M8767 driver are retrieved
during probe() and it is really helpful to have those under
devres management because of all the errorpaths in the
intialization.
Using the new dev_gpiod_unhinge() call we can remove the
devres management of the descriptor right before handing
it over to the regulators core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The GPIO descriptors used by the DA9211 driver are retrieved
during probe() and it is really helpful to have those under
devres management because of all the errorpaths in the
intialization.
Using the new dev_gpiod_unhinge() call we can remove the
devres management of the descriptor right before handing
it over to the regulators core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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