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path: root/drivers/regulator/da9063-regulator.c
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2023-08-04regulator: da9063: better fix null deref with partial DTMartin Fuzzey1-6/+6
Two versions of the original patch were sent but V1 was merged instead of V2 due to a mistake. So update to V2. The advantage of V2 is that it completely avoids dereferencing the pointer, even just to take the address, which may fix problems with some compilers. Both versions work on my gcc 9.4 but use the safer one. Fixes: 98e2dd5f7a8b ("regulator: da9063: fix null pointer deref with partial DT config") Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Tested-by: Benjamin Bara <benjamin.bara@skidata.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230804083514.1887124-1-martin.fuzzey@flowbird.group Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-17regulator: da9063: fix null pointer deref with partial DT configMartin Fuzzey1-0/+3
When some of the da9063 regulators do not have corresponding DT nodes a null pointer dereference occurs on boot because such regulators have no init_data causing the pointers calculated in da9063_check_xvp_constraints() to be invalid. Do not dereference them in this case. Fixes: b8717a80e6ee ("regulator: da9063: implement setter for voltage monitoring") Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Link: https://lore.kernel.org/r/20230616143736.2946173-1-martin.fuzzey@flowbird.group Signed-off-by: Mark Brown <broonie@kernel.org>
2023-04-12regulator: da9063: implement setter for voltage monitoringBenjamin Bara1-28/+90
Allow to en- and disable voltage monitoring from the device tree. Consider that the da9063 only monitors under- *and* over-voltage together, so both must be set to the same severity and value. Reviewed-by: Adam Ward <DLG-Adam.Ward.opensource@dm.renesas.com> Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com> Link: https://lore.kernel.org/r/20230403-da9063-disable-unused-v3-2-cc4dc698864c@skidata.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-04-12regulator: da9063: add voltage monitoring registersBenjamin Bara1-0/+29
Add the definitions for the registers responsible for voltage monitoring. Add a voltage monitor enable bitfield per regulator. Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Reviewed-by: Adam Ward <DLG-Adam.Ward.opensource@dm.renesas.com> Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com> Link: https://lore.kernel.org/r/20230403-da9063-disable-unused-v3-1-cc4dc698864c@skidata.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-03-20regulator: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in 4.14Douglas Anderson1-0/+1
Probing of regulators can be a slow operation and can contribute to slower boot times. This is especially true if a regulator is turned on at probe time (with regulator-boot-on or regulator-always-on) and the regulator requires delays (off-on-time, ramp time, etc). While the overall kernel is not ready to switch to async probe by default, as per the discussion on the mailing lists [1] it is believed that the regulator subsystem is in good shape and we can move regulator drivers over wholesale. There is no way to just magically opt in all regulators (regulators are just normal drivers like platform_driver), so we set PROBE_PREFER_ASYNCHRONOUS for all regulators found in 'drivers/regulator' individually. Given the number of drivers touched and the impossibility to test this ahead of time, it wouldn't be shocking at all if this caused a regression for someone. If there is a regression caused by this patch, it's likely to be one of the cases talked about in [1]. As a "quick fix", drivers involved in the regression could be fixed by changing them to PROBE_FORCE_SYNCHRONOUS. That being said, the correct fix would be to directly fix the problem that caused the issue with async probe. The approach here follows a similar approach that was used for the mmc subsystem several years ago [2]. In fact, I ran nearly the same python script to auto-generate the changes. The only thing I changed was to search for "i2c_driver", "spmi_driver", and "spi_driver" in addition to "platform_driver". [1] https://lore.kernel.org/r/06db017f-e985-4434-8d1d-02ca2100cca0@sirena.org.uk [2] https://lore.kernel.org/r/20200903232441.2694866-1-dianders@chromium.org/ Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20230316125351.1.I2a4677392a38db5758dee0788b2cea5872562a82@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
2021-07-15regulator: da9063: Add support for full-current mode.Vincent Pelletier1-2/+130
In addition to the ability of merging some power outputs, this chip has an overdrive mode. BCORE1, BCORE2 and BPRO have this ability, in which case the legal current draw is increased from 2 amps to 2.5 amps (at the expense of a quiescent current increase), and the configurable current limits are doubled. If a current higher than maximum half-current mode is requested, enable overdrive, and scale the current limit down. Symmetrically, scale the current limit up when querying a overdrive-enabled regulator. Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com> Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Link: https://lore.kernel.org/r/824518e6391b783a12eba9ff0527f06607a34bfb.1626160826.git.plr.vincent@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-07regulator: remove locking around regulator_notifier_call_chain()Michał Mirosław1-2/+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>
2020-06-12regulator: da9063: fix LDO9 suspend and warning.Martin Fuzzey1-1/+0
Commit 99f75ce66619 ("regulator: da9063: fix suspend") converted the regulators to use a common (corrected) suspend bit setting but one of regulators (LDO9) slipped through the crack. This means that the original problem was not fixed for LDO9 and also leads to a warning found by the test robot. da9063-regulator.c:515:3: warning: initialized field overwritten Fix this by converting that regulator too like the others. Fixes: 99f75ce66619 ("regulator: da9063: fix suspend") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Link: https://lore.kernel.org/r/1591959073-16792-1-git-send-email-martin.fuzzey@flowbird.group Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-24Merge branch 'regulator-5.7' into regulator-nextMark Brown1-29/+37
2020-03-24regulator: da9063: Fix get_mode() functions to read sleep fieldAdam Thomson1-26/+2
get_mode() is used to retrieve the active mode state. Settings-A config is used during active state, whilst Settings-B is for suspend. This means we only need to check the sleep field of each buck and LDO as that field solely relates to Settings-A config. This change is a clone of the get_mode() update which was committed as part of: - regulator: da9062: fix suspend_enable/disable preparation [a72865f057820ea9f57597915da4b651d65eb92f] Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Link: https://lore.kernel.org/r/20200324092516.60B5C3FB8D@swsrvapps-01.diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-18regulator: da9063: fix suspendMartin Fuzzey1-18/+2
The .set_suspend_enable() and .set_suspend_disable() methods are not supposed to immediately change the regulator state but just indicated if the regulator should be enabled or disabled when standby mode is entered (by a hardware signal). However currently they set control the SEL bits in the DVC registers, which causes the voltage to change to immediately between the "A" (normal) and "B" (standby) values as programmed and does nothing for the enable state... This means that "regulator-on-in-suspend" does not work (the regulator is switched off when the PMIC enters standby mode on the hardware signal) and, potentially, depending on the A and B voltage configurations the voltage could be incorrectly changed *before* actually entering suspend. The right bit to use for the functionality is the "CONF" bit in the "CONT" register. The detailed register description says "Sequencer target state" for this bit which is not very clear but the functional description is clearer. >From 5.1.5 System Enable: De-asserting SYS_EN (changing from active to passive state) clears control SYSTEM_EN which triggers a power down sequence into hibernate/standby mode ... With the exception of supplies that have the xxxx_CONF control bit asserted, all regulators in power domains POWER1, POWER, and SYSTEM are sequentially disabled in reverse order. Regulators with the <x>_CONF bit set remain on but change the active voltage controlregisters from V<x>_A to V<x>_B (if V<x>_B is notalready selected). Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Link: https://lore.kernel.org/r/1584461691-14344-1-git-send-email-martin.fuzzey@flowbird.group Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-13regulator: da9063: Replace zero-length array with flexible-array memberGustavo A. R. Silva1-1/+1
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertenly introduced[3] to the codebase from now on. This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Link: https://lore.kernel.org/r/20200211234710.GA29532@embeddedor Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-11regulator: da9063: remove redundant return statementRishi Gupta1-4/+2
The devm_request_threaded_irq() already returns 0 on success and negative error code on failure. So return from this itself can be used while preserving error log in case of failure. Signed-off-by: Rishi Gupta <gupt21@gmail.com> Link: https://lore.kernel.org/r/1580996996-28798-1-git-send-email-gupt21@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-11regulator: da9063: fix code formatting warnings and errorsRishi Gupta1-24/+34
This commit fixes following errors & warnings in this driver as reported by checkpatch.pl: - WARNING: Prefer 'unsigned int' to bare use of 'unsigned' - WARNING: line over 80 characters - ERROR: space prohibited before that ',' (ctx:WxW) - ERROR: code indent should use tabs where possible - WARNING: Block comments use * on subsequent lines Signed-off-by: Rishi Gupta <gupt21@gmail.com> Link: https://lore.kernel.org/r/1580996917-28494-1-git-send-email-gupt21@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01regulator: da9063: Simplify da9063_buck_set_mode for BUCK_MODE_MANUAL caseAxel Lin1-6/+3
The sleep flag bit decides the mode for BUCK_MODE_MANUAL case, simplify the logic as the result is the same. Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Link: https://lore.kernel.org/r/20190926055128.23434-2-axel.lin@ingics.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-02regulator: Remove dev_err() usage after platform_get_irq()Stephen Boyd1-3/+1
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-38-swboyd@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-20regulator: da9063: platform_data is gone, depend on OFWolfram Sang1-10/+0
With OF being the only configuration possibility left, depend on it to simplify some code. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Steve Twiss <stwiss.opensource@diasemi.com> Tested-by: Steve Twiss <stwiss.opensource@diasemi.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-20regulator: da9063: move definitions out of a header into the driverWolfram Sang1-1/+43
Those definitions are only used within the driver meanwhile, so put them there. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Steve Twiss <stwiss.opensource@diasemi.com> Tested-by: Steve Twiss <stwiss.opensource@diasemi.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-20regulator: da9063: remove platform_data supportWolfram Sang1-6/+1
There are no in-kernel users anymore, so remove this outdated interface. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Steve Twiss <stwiss.opensource@diasemi.com> Tested-by: Steve Twiss <stwiss.opensource@diasemi.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-26regulator: da9063: convert header to SPDXWolfram Sang1-14/+8
Covnert the header of the source file to SPDX. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-18regulator: da9063: Convert to use regulator_set/get_current_limit_regmapAxel Lin1-79/+28
Use regulator_set/get_current_limit_regmap helpers to save some code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Steve Twiss <stwiss@opensource.diasemi.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-13regulator: da9063: Fix notifier mutex lock warningSteve Twiss1-1/+4
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>
2019-02-22regulator: da9063: Use struct_size() in devm_kzalloc()Gustavo A. R. Silva1-4/+2
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; struct boo entry[]; }; size = sizeof(struct foo) + count * sizeof(struct boo); instance = alloc(size, GFP_KERNEL) Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = alloc(struct_size(instance, entry, count), GFP_KERNEL) Notice that, in this case, variable size is not necessary, hence it is removed. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-19regulator: da9063: Select maximum current in specific range for ↵Axel Lin1-1/+1
set_current_limit Selecting the minimal value is only true for voltage regulators. For current regulators the maximum in the given range should be selected instead. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-01-28regulator: da9063: Check return value of devm_regmap_field_alloc callsAxel Lin1-5/+24
Since devm_regmap_field_alloc can fail, add error checking for it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-07-04regulator: da9063: Handle less LDOs on DA9063LMarek Vasut1-31/+45
Move the LDOs present only on DA9063 at the end of the list, so that the DA9063L can simply indicate less LDOs and still share the list of regulators with DA9063. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Acked-by: Mark Brown <broonie@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-07-04mfd: da9063: Replace model with typeMarek Vasut1-4/+4
The model number stored in the struct da9063 is the same for all variants of the da9063 since it is the chip ID, which is always the same. Replace that with a separate identifier instead, which allows us to discern the DA9063 variants by setting the type based on either DT match or otherwise. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Acked-by: Mark Brown <broonie@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-07-04mfd: da9063: Rename PMIC_DA9063 to PMIC_CHIP_ID_DA9063Marek Vasut1-1/+1
The PMIC_DA9063 is a complete misnomer, it denotes the value of the DA9063 chip ID register, so rename it as such. It is also the value of chip ID register of DA9063L though, so drop the enum as all the DA9063 "models" share the same chip ID and thus the distinction will have to be made using DT or otherwise. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Acked-by: Mark Brown <broonie@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-06-13treewide: devm_kzalloc() -> devm_kcalloc()Kees Cook1-2/+2
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2017-08-30regulator: da9063: Return an error code on probe failureDan Carpenter1-1/+1
If "regl_pdata->n_regulators == 0" is true then we accidentally return PTR_ERR(<some_valid_pointer>) instead of an error code. I've changed it to return -ENODEV instead. Fixes: 69ca3e58d178 ("regulator: da9063: Add Dialog DA9063 voltage regulators support.") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-10regulator: da9063: Correct module alias prefix to fix module autoloadingGeert Uytterhoeven1-1/+1
s/paltform/platform/ Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-23regulator: da9*: constify regulator_ops structuresJulia Lawall1-2/+2
The regulator_ops structures are never modified, so declare them as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-09-14regulator: da9063: Remove unneeded semicolonJavier Martinez Canillas1-1/+1
It's clearly a typo error that just creates a null statement so remove it. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-06-02regulator: da9063: Fix up irq leakAxel Lin1-18/+3
Current code does not set regulators->irq_ldo_lim and regulators->irq_uvov, so it actually calls free_irq(0, regulators) twice in remove() but does not free the irq actually used. Convert to use devm_request_threaded_irq instead and then we don't need to take care the clean up irq so remove irq_ldo_lim and irq_uvov from struct da9063_regulators. Note, regulators->irq_uvov is not used at all in current code. There is a slightly change in this patch, it will return error in probe() if devm_request_threaded_irq fails. If the irq is optional, it should be fine to allow platform_get_irq_byname fails. But current code does not allow platform_get_irq_byname fails. So I think the reason to allow request irq failure is just because the irq leak. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-15Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-11-21regulator: da9063: Do not transform local IRQ to virtualDmitry Lavnikevich1-11/+8
Call platform_get_irq_byname() already returns VIRQ instead of local IRQ. Passing this value to regmap_irq_get_virq() causes error which results in IRQ registration failure. This patch fixes such behaviour. Signed-off-by: Dmitry Lavnikevich <d.lavnikevich@sam-solutions.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-20regulator: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-03-26Merge remote-tracking branches 'regulator/topic/bcm590xx', ↵Mark Brown1-7/+6
'regulator/topic/da9052', 'regulator/topic/da9055', 'regulator/topic/da9063', 'regulator/topic/da9210', 'regulator/topic/db8500' and 'regulator/topic/dbx500' into regulator-next
2014-03-11regulator: da9063: fix assignment of da9063_reg_matches to NULLColin Ian King1-1/+1
cppcheck detected an incorrect assignment: drivers/regulator/da9063-regulator.c:711]: (warning) Assignment of function parameter has no effect outside the function the original code didn't do anything, instead, *da9063_reg_matches needs to be set to NULL. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-20regulator: da9063: Remove redundant error messageSachin Kamat1-3/+1
kzalloc prints its own OOM message upon failure. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-19regulator: da9063: Do not hardcode return valuesSachin Kamat1-2/+2
Propagate the error values returned by the function instead. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-18regulator: da9063: Add missing of_node_putSachin Kamat1-0/+1
Add of_node_put to decrement the ref count. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-15regulator: da9063: Use of_get_child_by_nameSachin Kamat1-1/+1
of_find_node_by_name walks the allnodes list, and can thus walk outside of the parent node. Use of_get_child_by_name instead. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-12regulator: da9063: Bug fix when setting max voltage on LDOs 5-11Steve Twiss1-1/+3
Bug fix to allow the setting of maximum voltage for certain LDOs. What the bug is: There is a problem caused by an invalid calculation of n_voltages in the driver. This n_voltages value has the potential to be different for each regulator. The value for linear_min_sel is set as DA9063_V##regl_name# which can be different depending upon the regulator. This is chosen according to the following definitions in the DA9063 registers.h file: DA9063_VLDO1_BIAS 0 DA9063_VLDO2_BIAS 0 DA9063_VLDO3_BIAS 0 DA9063_VLDO4_BIAS 0 DA9063_VLDO5_BIAS 2 DA9063_VLDO6_BIAS 2 DA9063_VLDO7_BIAS 2 DA9063_VLDO8_BIAS 2 DA9063_VLDO9_BIAS 3 DA9063_VLDO10_BIAS 2 DA9063_VLDO11_BIAS 2 The calculation for n_voltages is valid for LDOs whose BIAS value is zero but this is not correct for those LDOs which have a non-zero value. What the fix is: In order to take into account the non-zero linear_min_sel value which is set for the regulators LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 and LDO11, the calculation for n_voltages should take into account the missing term defined by DA9063_V##regl_name#. This will in turn allow the core constraints calculation to set the maximum voltage limits correctly and therefore allow users to apply the maximum expected voltage to all of the LDOs. Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
2013-10-24Merge remote-tracking branch 'regulator/topic/devm' into regulator-nextMark Brown1-17/+4
2013-10-24Merge remote-tracking branch 'regulator/topic/da9063' into regulator-nextMark Brown1-1/+1
2013-09-30regulator: da9063: use devm_regulator_register()Jingoo Han1-17/+4
Use devm_regulator_register() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: da9063: Add missing initialization of da9063_reg_matchesGeert Uytterhoeven1-1/+1
With gcc 4.1.2: drivers/regulator/da9063-regulator.c: In function ‘da9063_regulator_probe’: drivers/regulator/da9063-regulator.c:847: warning: ‘da9063_reg_matches’ is used uninitialized in this function If the parent device already has platform data, da9063_reg_matches will not be initialized. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-10regulator: da9063: Fix PTR_ERR/ERR_PTR mismatchGeert Uytterhoeven1-1/+1
If CONFIG_OF=n: drivers/regulator/da9063-regulator.c: In function ‘da9063_parse_regulators_dt’: drivers/regulator/da9063-regulator.c:712: warning: passing argument 1 of ‘PTR_ERR’ makes pointer from integer without a cast drivers/regulator/da9063-regulator.c:712: warning: return makes pointer from integer without a cast Use ERR_PTR() to encode an error code in a pointer. PTR_ERR() is meant to decode an error code from a pointer. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-01regulator: da9063: Statize da9063_ldo_lim_eventAxel Lin1-1/+1
da9063_ldo_lim_event() is only referenced in this driver, make it static. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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