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* mfd: t7l66xb: Handle return value of clk_prepare_enableArvind Yadav2017-09-051-3/+14
| | | | | | | | clk_prepare_enable() can fail here and we must check its return value. we must disable clock, if t7l66xb_probe is not successful. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: t7l66xb: Make use of raw_spinlock variantsJulia Cartwright2017-04-271-10/+10
| | | | | | | | | | | | | | The t7l66xb mfd driver currently implements an irq_chip for handling interrupts; due to how irq_chip handling is done, it's necessary for the irq_chip methods to be invoked from hardirq context, even on a a real-time kernel. Because the spinlock_t type becomes a "sleeping" spinlock w/ RT kernels, it is not suitable to be used with irq_chips. A quick audit of the operations under the lock reveal that they do only minimal, bounded work, and are therefore safe to do under a raw spinlock. Signed-off-by: Julia Cartwright <julia@ni.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* genirq: Remove irq argument from irq flow handlersThomas Gleixner2015-09-161-1/+1
| | | | | | | | | | | | | | Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
* mfd: Use irq_desc_get_xxx() to avoid redundant lookup of irq_descJiang Liu2015-08-111-1/+1
| | | | | | | | | | | Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we already have a pointer to corresponding irq_desc. Do the same change to avoid the pattern "irq_get_chip_data(data->irq)". Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: t7l66xb: Consolidate chained IRQ handler install/removeThomas Gleixner2015-08-111-4/+2
| | | | | | | | | | | | Chained irq handlers usually set up handler data as well. We now have a function to set both under irq_desc->lock. Replace the two calls with one. Search and conversion was done with coccinelle. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: Kill off set_irq_flags usageRob Herring2015-08-111-6/+0
| | | | | | | | | | | | | | | | | | | | | set_irq_flags is ARM specific with custom flags which have genirq equivalents. Convert drivers to use the genirq interfaces directly, so we can kill off set_irq_flags. The translation of flags is as follows: IRQF_VALID -> !IRQ_NOREQUEST IRQF_PROBE -> !IRQ_NOPROBE IRQF_NOAUTOEN -> IRQ_NOAUTOEN For IRQs managed by an irqdomain, the irqdomain core code handles clearing and setting IRQ_NOREQUEST already, so there is no need to do this in .map() functions and we can simply remove the set_irq_flags calls. Some users also modify IRQ_NOPROBE and this has been maintained although it is not clear that is really needed. There appears to be a great deal of blind copy and paste of this code. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: t7l66xb: Remove unnecessary pdata checkManinder Singh2015-08-111-2/+2
| | | | | | | | | | o Making pdata NULL check to (!pdata) as coding standard and all other checks in file. o Removing redundant check of pdata, because we already check for pdata, and also derefernced before this check. Signed-off-by: Maninder Singh <maninder1.s@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds2014-12-141-1/+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 ...
| * mfd: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+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>
* | mfd: t7l66xb: prepare/unprepare clocksDmitry Eremin-Solenikov2014-11-251-7/+7
|/ | | | | | | Change clk_enable/disable() calls to clk_prepare_enable() and clk_disable_unprepare(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
* mfd: Use dev_get_platdata()Jingoo Han2013-07-311-4/+4
| | | | | | | | Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: t7l66xb: Remove unnecessary platform_set_drvdata()Jingoo Han2013-06-111-1/+0
| | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d (device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: core: Push irqdomain mapping out into devicesMark Brown2012-09-151-1/+1
| | | | | | | | | | | | | | | | | | | | | Currently the MFD core supports remapping MFD cell interrupts using an irqdomain but only if the MFD is being instantiated using device tree and only if the device tree bindings use the pattern of registering IPs in the device tree with compatible properties. This will be actively harmful for drivers which support non-DT platforms and use this pattern for their DT bindings as it will mean that the core will silently change remapping behaviour and it is also limiting for drivers which don't do DT with this particular pattern. There is also a potential fragility if there are interrupts not associated with MFD cells and all the cells are omitted from the device tree for some reason. Instead change the code to take an IRQ domain as an optional argument, allowing drivers to take the decision about the parent domain for their interrupts. The one current user of this feature is ab8500-core, it has the domain lookup pushed out into the driver. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Convert MFD drivers to use module_platform_driverMark Brown2012-01-091-15/+1
| | | | | | | | | Factors out some boilerplate code for drivers doing the default thing for platform driver registration. Drivers using platform_driver_probe or an initcall other than module_init can't be converted. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mtd: Use platform_data to retrieve tmio_nand platform bitsSamuel Ortiz2011-05-261-1/+2
| | | | | | | | | | | With the addition of the platform device mfd_cell pointer, we can now cleanly pass the sub device drivers platform data pointers through the regular device platform_data one, and get rid of mfd_get_data(). Cc: Ian Molton <spyro@f2s.com> Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mmc: Use device platform_data to retrieve tmio_mmc platform bitsSamuel Ortiz2011-05-261-1/+2
| | | | | | | | | | | | With the addition of the platform device mfd_cell pointer, we can now cleanly pass the sub device drivers platform data pointers through the regular device platform_data one, and get rid of mfd_get_data() Cc: Ian Molton <spyro@f2s.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Philipp Zabel <philipp.zabel@gmail.com> Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Fold irq_set_chip/irq_set_handlerThomas Gleixner2011-03-271-2/+1
| | | | | | | | Use the combined irq_set_chip_and_handler() function instead. Converted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Cleanup irq namespaceThomas Gleixner2011-03-271-11/+11
| | | | | | | | Converted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mtd: Use mfd_data instead of driver_data for tmio_nandAndres Salomon2011-03-231-1/+1
| | | | | | | | | | | | Use mfd_data for passing information from mfd drivers to mfd clients. The mfd_cell's driver_data field is being phased out. Clients that were using driver_data now access .mfd_data via mfd_get_data(). This changes tmio-nand only; mfd drivers with other cells are not modified. Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mmc: Use mfd_data instead of driver_data for tmio-mmcAndres Salomon2011-03-231-1/+1
| | | | | | | | | | | | Use mfd_data for passing information from mfd drivers to mfd clients. The mfd_cell's driver_data field is being phased out. Clients that were using driver_data now access .mfd_data via mfd_get_data(). This changes tmio-mmc only; mfd drivers with other cells are not modified. Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: mfd_cell is now implicitly available to t7166xb driversAndres Salomon2011-03-231-9/+0
| | | | | | | | | | No need to explicitly set the cell's platform_data/data_size. Modify clients to use mfd_get_cell helper function instead of accessing platform_data directly. Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Convert t7166xb driver to new irq_ APIMark Brown2011-01-141-10/+10
| | | | | | | | | | The genirq core is being updated to pass struct irq_data rather than an irq number to irq_chip operations. Update the t7166xb driver to the new APIs. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Properly free t7l66xb clk32k clock sourceAxel Lin2010-08-121-1/+2
| | | | | | | | | | This patch includes below fixes to properly free clk32k clock source: 1. remove a redundant clk_put in t7l66xb_probe error path 2. add missing clk_disable(t7l66xb->clk32k) and clk_put(t7l66xb->clk32k) to properly free the clock source. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: Check t7l66 platform_data pointerSamuel Ortiz2010-05-281-0/+3
| | | | | | | We should check for pdata being not NULL before dereferencing it. Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* mfd: Correct use after free for t7l66xbJulia Lawall2010-03-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The structure t7l66xb should not be freed before the subsequent references to its fields in the arguments to clk_put. Furthermore, this structure is allocated near the beginning of the function, and a goto to the label err_noirq appears after a successful allocation, so it would seem that the kfree should be moved down below this label. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,e; identifier f; iterator I; statement S; @@ *kfree(x); ... when != &x when != x = e when != I(x,...) S *x->f // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk>
* mfd: Use resource_size() for t7l66xbH Hartley Sweeten2010-03-071-1/+1
| | | | | | | | Use resource_size() for ioremap. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: tmio_mmc hardware abstraction for CNF areaIan Molton2010-01-181-18/+37
| | | | | | | | | | | | This patch abstracts out the CNF area code from tmio_mmc which is not present in all hardware that can use this driver. This is required so that we can support non-toshiba based hardware. ASIC3 support by Philipp Zabel Signed-off-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* mfd: fix tmio related warningsSamuel Ortiz2009-06-171-1/+1
| | | | | | | | We can not have .driver_data as const since platform_set_drvdata() doesnt take a const. The hclk mmc_data field can be const though. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* MFD,mmc: tmio_mmc: make HCLK configurablePhilipp Zabel2009-06-131-0/+5
| | | | | | | | | | | The Toshiba parts all have a 24 MHz HCLK, but HTC ASIC3 has a 24.576 MHz HCLK and AMD Imageon w228x's HCLK is 80 MHz. With this patch, the MFD driver provides the HCLK frequency to tmio_mmc via mfd_cell->driver_data. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Acked-by: Ian Molton <ian@mnementh.co.uk> Acked-by: Samuel Ortiz <sameo@openedhand.com> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
* mfd: Storage class should be before const qualifierTobias Klauser2009-04-051-2/+2
| | | | | | | | | | | The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* mfd: update TMIO drivers to use the clock APIIan Molton2008-10-191-8/+32
| | | | | | | | This patch updates the remaining two TMIO drivers to use the clock API rather than callback hooks into platform code. Signed-off-by: Ian Molton <spyro@f2s.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* mfd: t7l66 MMC platform dataIan Molton2008-08-101-0/+5
| | | | | | The tmio MMC driver needs the cell to be passed as a platform data. Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* mfd: Fix 7l66 and 6387 according to the new mfd-core APISamuel Ortiz2008-08-101-3/+8
| | | | Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
* mfd: driver for the T7L66XB TMIO SoCIan Molton2008-08-101-0/+409
This patchset provides support for the core functinality of the T7L66XB SoC from Toshiba. Supported in this patchset is the IRQ MUX, MMC controller and NAND flash controller. Signed-off-by: Ian Molton <spyro@f2s.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
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