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2015-05-26backlight: pwm: Handle EPROBE_DEFER while requesting the PWMNicolas Ferre1-0/+4
When trying to request the PWM device with devm_pwm_get(), the EPROBE_DEFER flag is not handled properly. It can lead to the PWM not being found. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-04-21Merge tag 'fbdev-4.1' of ↵Linus Torvalds23-43/+187
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux Pull fbdev updates from Tomi Valkeinen: "Small fixes and improvements to various fbdev drivers" * tag 'fbdev-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (24 commits) omapdss: extend pm notifier to handle hibernation OMAPDSS: Correct video ports description file path in DT binding doc OMAPDSS: disable VT switch fbdev: sh_mobile_lcdc: Fix destruction of uninitialized mutex video: fbdev: sh_mobile_lcdcfb: Fix ROP3 sysfs attribute parsing fbdev: pm3fb: cleanup some confusing indenting hyperv: hyperv_fb: match wait_for_completion_timeout return type video: fbdev: use msecs_to_jiffies for time conversions fbdev: via/via_clock: fix sparse warning video: fbdev: make of_device_id array const fbdev: sm501fb: use memset_io OMAPDSS: workaround for MFLAG + NV12 issue OMAPDSS: Add support for MFLAG OMAPDSS: setup default fifo thresholds OMAPDSS: DISPC: lock access to DISPC_CONTROL & DISPC_CONFIG OMAPDSS: DISPC: fix div by zero issue in overlay scaling OMAPDSS: DISPC: change sync_pclk_edge default value OMAPDSS: change signal_level & signal_edge enum values OMAPDSS: DISPC: explicit handling for sync and de levels OMAPDSS: DISPC: remove OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES ...
2015-04-20Merge omapdss topic branch for fbdev 4.1Tomi Valkeinen16-25/+166
2015-04-20omapdss: extend pm notifier to handle hibernationGrygorii Strashko1-0/+4
Add handling of missed events in omap_dss_pm_notif which are needed to support hibernation (suspend to disk). Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-04-20OMAPDSS: disable VT switchTomi Valkeinen1-0/+3
We don't need VT switch when suspending/resuming, so disable it. This speeds up suspend/resume. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: NeilBrown <neil@brown.name>
2015-04-18Merge tag 'devicetree-for-linus' of ↵Linus Torvalds1-6/+1
git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux Pull devicetree changes from Grant Likely: "Here are the devicetree changes queued up for v4.1. Nothing really exciting here. Rob has another few commits for big-endian attached UARTs, but those will be sent in a separate merge request since they haven't been as thoroughly tested as this batch. Here are the highlights: - lots of unittest cleanup from Frank Rowand - bugfixes and updates to the of_graph code - tighten up of_get_mac_address() code - documentation updates" * tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: of/unittest: Fix of_platform_depopulate test case of/unittest: early return from test skips tests of/unittest: breadcrumbs to reduce pain of future maintainers of/unittest: reduce checkpatch noise - line after declarations of/unittest: typo in error string of/unittest: add const where needed of_net: factor out repetitive code from of_get_mac_address() drivers/of: Add empty ranges quirk for PA-Semi of: Allow selection of OF_DYNAMIC and OF_OVERLAY if OF_UNITTEST of: Empty node & property flag accessors when !OF of: Explicitly include linux/types.h in of_graph.h dt-bindings: brcm: rationalize Broadcom documentation naming of/unittest: replace 'selftest' with 'unittest' Documentation: rename of_selftest.txt to of_unittest.txt Documentation: update the of_selftest.txt dt: OF_UNITTEST make dependency broken MAINTAINERS: Pantelis Antoniou device tree overlay maintainer of: Add of_graph_get_port_by_id function of: Add for_each_endpoint_of_node helper macro of: Decrement refcount of previous endpoint in of_graph_get_next_endpoint
2015-04-16Merge tag 'powerpc-4.1-1' of ↵Linus Torvalds15-74/+47
git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull powerpc updates from Michael Ellerman: - Numerous minor fixes, cleanups etc. - More EEH work from Gavin to remove its dependency on device_nodes. - Memory hotplug implemented entirely in the kernel from Nathan Fontenot. - Removal of redundant CONFIG_PPC_OF by Kevin Hao. - Rewrite of VPHN parsing logic & tests from Greg Kurz. - A fix from Nish Aravamudan to reduce memory usage by clamping nodes_possible_map. - Support for pstore on powernv from Hari Bathini. - Removal of old powerpc specific byte swap routines by David Gibson. - Fix from Vasant Hegde to prevent the flash driver telling you it was flashing your firmware when it wasn't. - Patch from Ben Herrenschmidt to add an OPAL heartbeat driver. - Fix for an oops causing get/put_cpu_var() imbalance in perf by Jan Stancek. - Some fixes for migration from Tyrel Datwyler. - A new syscall to switch the cpu endian by Michael Ellerman. - Large series from Wei Yang to implement SRIOV, reviewed and acked by Bjorn. - A fix for the OPAL sensor driver from Cédric Le Goater. - Fixes to get STRICT_MM_TYPECHECKS building again by Michael Ellerman. - Large series from Daniel Axtens to make our PCI hooks per PHB rather than per machine. - Small patch from Sam Bobroff to explicitly abort non-suspended transactions on syscalls, plus a test to exercise it. - Numerous reworks and fixes for the 24x7 PMU from Sukadev Bhattiprolu. - Small patch to enable the hard lockup detector from Anton Blanchard. - Fix from Dave Olson for missing L2 cache information on some CPUs. - Some fixes from Michael Ellerman to get Cell machines booting again. - Freescale updates from Scott: Highlights include BMan device tree nodes, an MSI erratum workaround, a couple minor performance improvements, config updates, and misc fixes/cleanup. * tag 'powerpc-4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (196 commits) powerpc/powermac: Fix build error seen with powermac smp builds powerpc/pseries: Fix compile of memory hotplug without CONFIG_MEMORY_HOTREMOVE powerpc: Remove PPC32 code from pseries specific find_and_init_phbs() powerpc/cell: Fix iommu breakage caused by controller_ops change powerpc/eeh: Fix crash in eeh_add_device_early() on Cell powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH powerpc/perf/hv-24x7: Fail 24x7 initcall if create_events_from_catalog() fails powerpc/pseries: Correct memory hotplug locking powerpc: Fix missing L2 cache size in /sys/devices/system/cpu powerpc: Add ppc64 hard lockup detector support oprofile: Disable oprofile NMI timer on ppc64 powerpc/perf/hv-24x7: Add missing put_cpu_var() powerpc/perf/hv-24x7: Break up single_24x7_request powerpc/perf/hv-24x7: Define update_event_count() powerpc/perf/hv-24x7: Whitespace cleanup powerpc/perf/hv-24x7: Define add_event_to_24x7_request() powerpc/perf/hv-24x7: Rename hv_24x7_event_update powerpc/perf/hv-24x7: Move debug prints to separate function powerpc/perf/hv-24x7: Drop event_24x7_request() powerpc/perf/hv-24x7: Use pr_devel() to log message ... Conflicts: tools/testing/selftests/powerpc/Makefile tools/testing/selftests/powerpc/tm/Makefile
2015-04-15Merge tag 'backlight-for-linus-4.1' of ↵Linus Torvalds2-4/+2
git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight Pull backlight updates from Lee Jones: "Changes to existing drivers: - Use of_get_child_by_name() instead of refcount; 88pm860x_bl - Terminate array with NULL element; da9052_bl" * tag 'backlight-for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: da9052_bl: Terminate da9052_wled_ids array with empty element backlight: 88pm860x_bl: Use of_get_child_by_name() instead of refcount hack
2015-04-15Merge tag 'mfd-for-linus-4.1' of ↵Linus Torvalds3-0/+364
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "Changes to existing drivers: - Rename child driver [axp288_battery => axp288_fuel_gauge]; axp20x - Rename child driver [max77693-flash => max77693-led]; max77693 - Error handling fixes; intel_soc_pmic - GPIO tweaking; intel_soc_pmic - Remove non-DT code; vexpress-sysreg, tc3589x - Remove unused/legacy code; ti_am335x_tscadc, rts5249, rtsx_gops, rtsx_pcr, rtc-s5m, sec-core, max77693, menelaus, wm5102-tables - Trivial fixups; rtsx_pci, da9150-core, sec-core, max7769, max77693, mc13xxx-core, dln2, hi6421-pmic-core, rk808, twl4030-power, lpc_ich, menelaus, twl6040 - Update register/address values; rts5227, rts5249 - DT and/or binding document fixups; arizona, da9150, mt6397, axp20x, qcom-rpm, qcom-spmi-pmic - Couple of trivial core Kconfig fixups - Remove use of seq_printf return value; ab8500-debugfs - Remove __exit markups; menelaus, tps65010 - Fix platform-device name collisions; mfd-core New drivers/supported devices: - Add support for wm8280/wm8281 into arizona - Add support for COMe-cBL6 into kempld-core - Add support for rts524a and rts525a into rts5249 - Add support for ipq8064 into qcom_rpm - Add support for extcon into axp20x - New MediaTek MT6397 PMIC driver - New Maxim MAX77843 PMIC dirver - New Intel Quark X1000 I2C-GPIO driver - New Skyworks SKY81452 driver" * tag 'mfd-for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (76 commits) mfd: sec: Fix RTC alarm interrupt number on S2MPS11 mfd: wm5102: Remove registers for output 3R from readable list mfd: tps65010: Remove incorrect __exit markups mfd: devicetree: bindings: Add Qualcomm RPM regulator subnodes mfd: axp20x: Add support for extcon cell mfd: lpc_ich: Sort IDs mfd: twl6040: Remove wrong and unneeded "platform:twl6040" modalias mfd: qcom-spmi-pmic: Add specific compatible strings for Qualcomm's SPMI PMIC's mfd: axp20x: Fix duplicate const for model names mfd: menelaus: Use macro for magic number mfd: menelaus: Drop support for SW controller VCORE mfd: menelaus: Delete omap_has_menelaus mfd: arizona: Correct type of gpio_defaults mfd: lpc_ich: Sort IDs mfd: Fix a typo in Kconfig mfd: qcom_rpm: Add support for IPQ8064 mfd: devicetree: qcom_rpm: Document IPQ8064 resources mfd: core: Fix platform-device name collisions mfd: intel_quark_i2c_gpio: Don't crash if !DMI dt-bindings: Add vendor-prefix for X-Powers ...
2015-04-09backlight: da9052_bl: Terminate da9052_wled_ids array with empty elementAndrey Ryabinin1-0/+1
Array of platform_device_id elements should be terminated with empty element. Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-04-09backlight: 88pm860x_bl: Use of_get_child_by_name() instead of refcount hackGeert Uytterhoeven1-4/+1
of_find_node_by_name() calls of_node_put() on its "from" parameter. To counter this, pm860x_backlight_dt_init() calls of_node_get() first. Use of_get_child_by_name() instead to get rid of the refcount hack. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-04-07fbdev: sh_mobile_lcdc: Fix destruction of uninitialized mutexGeert Uytterhoeven1-6/+7
If sh_mobile_lcdc_probe() fails after the allocation of driver-private data, but before the initialization of all channels, a warning will be printed due to the destruction of an uninitialized mutex: WARNING: CPU: 0 PID: 1 at kernel/locking/mutex-debug.c:116 mutex_destroy+0x5c/0x7c() DEBUG_LOCKS_WARN_ON(mutex_is_locked(lock)) ... Backtrace: ... [<c00425b4>] (mutex_destroy) from [<c01d5858>] (sh_mobile_lcdc_remove+0x1bc/0x230) r4:df6a4800 r3:00000000 [<c01d569c>] (sh_mobile_lcdc_remove) from [<c01d6620>] (sh_mobile_lcdc_probe+0xd54/0xe28) Move the initialization of the mutexes from sh_mobile_lcdc_channel_init() to immediately after the allocation of driver-private data to fix this. Note that the interrupt number is moved to a new variable "irq", so we can reuse the existing variable "i" for iterating over the channels. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-04-07Merge branch 'next-remove-ldst' of ↵Michael Ellerman2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into next
2015-03-25Merge tag 'of-graph-for-4.0' of git://git.pengutronix.de/git/pza/linux into ↵Rob Herring1-6/+1
for-next Pull of-graph helpers from Philipp Zabel: of: Add of-graph helpers to loop over endpoints and find ports by id This series converts of_graph_get_next_endpoint to decrement the refcount of the passed prev parameter. This allows to add a for_each_endpoint_of_node helper macro to loop over all endpoints in a device tree node. The of_graph_get_port_by_id function is added to retrieve a port by its known port id (contained in the reg property) from the device tree.
2015-03-23powerpc: Move Power Macintosh drivers to generic byteswappersDavid Gibson2-2/+2
ppc has special instruction forms to efficiently load and store values in non-native endianness. These can be accessed via the arch-specific {ld,st}_le{16,32}() inlines in arch/powerpc/include/asm/swab.h. However, gcc is perfectly capable of generating the byte-reversing load/store instructions when using the normal, generic cpu_to_le*() and le*_to_cpu() functions eaning the arch-specific functions don't have much point. Worse the "le" in the names of the arch specific functions is now misleading, because they always generate byte-reversing forms, but some ppc machines can now run a little-endian kernel. To start getting rid of the arch-specific forms, this patch removes them from all the old Power Macintosh drivers, replacing them with the generic byteswappers. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2015-03-20video: fbdev: sh_mobile_lcdcfb: Fix ROP3 sysfs attribute parsingLaurent Pinchart1-1/+1
The ROP3 attribute is expressed as an integer in the 0-255 range. Remove the wrong conversion to boolean when parsing it. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-03-17fbdev: kconfig: replace PPC_OF with PPCKevin Hao1-1/+1
The PPC_OF is a ppc specific option which is used to mean that the firmware device tree access functions are available. Since all the ppc platforms have a device tree, it is aways set to 'y' for ppc. So it makes no sense to keep a such option in the current kernel. Replace it with PPC. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-17fbdev: remove the unnecessary includes of ppc specific header filesKevin Hao1-4/+0
In the current kernel, we don't need to include these arch specific header files for ppc. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-17fbdev: riva: remove the dependency on PPC_OFKevin Hao1-10/+7
The OF functionality has moved to a common place and be used by many archs. So we don't need to include the ppc arch specific header files and depend on PPC_OF option any more. This is a preparation for killing PPC_OF. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-17fbdev: nvidia: remove the dependency on PPC_OFKevin Hao4-17/+1
The OF functionality has moved to a common place and be used by many archs. So we don't need to include the ppc arch specific header files and depend on PPC_OF option any more. This is a preparation for killing PPC_OF. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-17fbdev: imsttfb: remove the dependency on PPC_OFKevin Hao1-5/+1
The OF functionality has moved to a common place and be used by many archs. So we don't need to depend on PPC_OF option any more. This is a preparation for killing PPC_OF. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-17fbdev: radeon: replace PPC_OF with PPCKevin Hao5-33/+33
The PPC_OF is a ppc specific option which is used to mean that the firmware device tree access functions are available. Since all the ppc platforms have a device tree, it is aways set to 'y' for ppc. So it makes no sense to keep a such option in the current kernel. Replace it with PPC. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-17fbdev: aty128fb: replace PPC_OF with PPCKevin Hao1-2/+2
The PPC_OF is a ppc specific option which is used to mean that the firmware device tree access functions are available. Since all the ppc platforms have a device tree, it is aways set to 'y' for ppc. So it makes no sense to keep a such option in the current kernel. Replace it with PPC. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-12backlight: Add support Skyworks SKY81452 backlight driverGyungoh Yoo3-0/+364
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Bryan Wu <cooloney@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-03-10fbdev: pm3fb: cleanup some confusing indentingDan Carpenter1-3/+3
This if statement should be pushed out one tab to line up with the rest. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-03-10hyperv: hyperv_fb: match wait_for_completion_timeout return typeNicholas Mc Guire1-2/+4
The return type of wait_for_completion_timeout is unsigned long not int. This patch fixes up the declarations only. Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-03-10video: fbdev: use msecs_to_jiffies for time conversionsNicholas Mc Guire1-3/+3
This is only an API consolidation and should make things more readable by replacing var * HZ / 1000 by msecs_to_jiffies(var). Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-03-02fbdev: via/via_clock: fix sparse warningLad, Prabhakar1-1/+1
this patch fixes following sparse warning: via_clock.c:33:12: warning: symbol 'via_slap' was not declared. Should it be static? Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-03-02video: fbdev: make of_device_id array constSanjeev Sharma1-1/+1
Make of_device_id array const. Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@mentor.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-03-02fbdev: sm501fb: use memset_ioSudip Mukherjee1-1/+1
we should really be using memset_io() instead of using memset() as this is actually io space mapped into our memory. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: workaround for MFLAG + NV12 issueTomi Valkeinen1-1/+11
It was found that having two displays enabled and having an NV12 overlay on one of the displays will cause underflows/synclosts. Debugging this pointed to some issue with MFLAG. It is unclear why this issue is happening, but it looks like there is a HW bug related to MFLAG and FIFO management. Disabling MFLAG makes this issue go away, but then we lose the benefit of MFLAG. Also forcing MFLAG always on makes the issue go away. Also, using certain values for MFLAG_START, MFLAG thresholds and PRELOAD makes the issue go away, but there was no obvious logic to which values work and which don't. As a workaround until more information about this is found, force MFLAG always on to make NV12 usable. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: Add support for MFLAGTomi Valkeinen1-0/+50
OMAP5 has support for MFLAG feature, which allows DSS to dynamically increase the priority of DISPC's DMA traffic. At the moment we don't have support for it. It was noticed that on DRA7 with high bandwidth use cases we see FIFO underflows. Implementing MFLAG support removed those underflows. Interestingly, on OMAP5 uEVM no such overflows were seen. This patch adds a simple MFLAG implementation, where we use a fixed MFLAG threshold value based on the FIFO size. The thresholds are set to 4/8 of fifo size for low threshold, and 5/8 of fifo size for high threshold. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: setup default fifo thresholdsTomi Valkeinen1-0/+15
At the moment we don't setup FIFO thresholds by default in omapdss. It's supposed to be done by the user of omapdss. And that is missing from omapdrm, causing unoptimal thresholds to be used when using omapdrm. While I believe it's in theory better to allow the user of omapdss to setup the fifo thresholds, in practice we always use the same values, and we could as well setup the thresholds in omapdss. Furthermore, in omapdss init we always swap the FIFO used for GFX and WB overlays, but we don't swap the FIFO thresholds for those overlays (which is the reason for omapdrm using unoptimal HW reset values). So it would make sense to setup the thresholds to account for the swapping of the FIFOs. So, this patch adds code to setup default FIFO tresholds at omapdss init. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: DISPC: lock access to DISPC_CONTROL & DISPC_CONFIGTomi Valkeinen1-0/+14
Dispc driver presumes that the callers handle locking for all normal functions. However, omapdrm doesn't handle this, and presumes that all overlay manager registers are private to that overlay manager, and thus presumes that configurations for overlay managers can be written via different threads freely. For many registers the above is true. The exceptions are DISPC_CONTROL and DISPC_CONFIG registers, which contain bits for both LCD and TV overlay managers. Fixing this properly in omapdrm means a big omapdrm rewrite. So, for now, add locking to dispc for the problematic registers. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reported-by: Somnath Mukherjee <somnath@ti.com>
2015-02-26OMAPDSS: DISPC: fix div by zero issue in overlay scalingTomi Valkeinen1-0/+5
omapdrm doesn't always configure the overlays correctly, causing the overlay setup functions to be called with zero timings. This leads to division by zero error. This happens, for example, when a HDMI cable is not connected, but a user tries to setup a plane with scaling. Fixing omapdrm is a big job, so for now let's check for the bad timings in DISPC and return an error. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: DISPC: change sync_pclk_edge default valueTomi Valkeinen1-3/+1
The common 'struct videomode' does not have a flag to select when the sync signals should be driven. The default behavior of DISPC HW is to drive the sync signal on the opposite pixel clock edge from data signal, which is also what the videomode_to_omap_video_timings() uses. However, it looks like what panels usually expect is that the data and sync signals are driven on the same edge, so let's change videomode_to_omap_video_timings() to set the sync_pclk_edge accordingly. Note that this only affect panels drivers that use videomode_to_omap_video_timings(), probably when getting the video timings directly from DT data. The drivers can still configure the sync_pclk_edge independently if they so wish. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: DISPC: explicit handling for sync and de levelsTomi Valkeinen1-4/+37
When configuring the lcd timings, instead of writing enum values directly to the HW, use switch-case to get the value to be programmed. This is safer and also allows us to change the enum values. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: DISPC: remove OMAPDSS_DRIVE_SIG_OPPOSITE_EDGESTomi Valkeinen11-18/+16
DISPC can drive data lines either on rising or falling pixel clock edge, which can be configured by the user. Sync lines can also be driven on rising or falling pixel clock edge, but additionally the HW can be configured to drive the sync lines on opposite clock edge from the data lines. This opposite edge setting does not make any sense, as the same effect can be achieved by just setting the sync lines to be driven on the other edge compared to the data lines. It feels like some kind of backward compatibility option, even if all DSS versions seem to have the same implementation. To simplify the code and configuration of the signals, and to make the dispc timings more compatible with what is used on other platforms, let's just remove the whole opposite-edge support. The drivers that used OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES setting are changed so that they use the opposite setting from the data edge. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: TFP410: fix input sync signalsTomi Valkeinen1-0/+11
TFP410 requires that DE is active high and the data and syncs are driven on rising pixel clock edge. However, at the moment the driver doesn't request such syncs, and the end result is that the sync settings depend on default values, which are not right in all cases. Set the sync values explicitly. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26OMAPDSS: fix paddr check for TILER addressesTomi Valkeinen1-1/+1
The DISPC driver checks that the buffer address is not 0. However, when using TILER, the address space is TILER specific and 0 is a valid address. Fix the check to allow address of 0 for TILER. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reported-by: srinivas pulukuru <srinivas.pulukuru@ti.com>
2015-02-26OMAPDSS: fix regression with display sysfs filesTomi Valkeinen1-84/+95
omapdss's sysfs directories for displays used to have 'name' file, giving the name for the display. This file was later renamed to 'display_name' to avoid conflicts with i2c sysfs 'name' file. Looks like at least xserver-xorg-video-omap3 requires the 'name' file to be present. To fix the regression, this patch creates new kobjects for each display, allowing us to create sysfs directories for the displays. This way we have the whole directory for omapdss, and there will be no sysfs file clashes with the underlying display device's sysfs files. We can thus add the 'name' sysfs file back. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Tested-by: NeilBrown <neilb@suse.de>
2015-02-26video: fbdev: fix possible null dereferenceSudip Mukherjee1-3/+3
we were dereferencing edid first and the NULL check was after accessing that. now we are using edid only if we know that it is not NULL. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-26video: ARM CLCD: Add missing error check for devm_kzallocKiran Padwal1-0/+3
This patch add a missing check on the return value of devm_kzalloc, which would cause a NULL pointer dereference in a OOM situation. Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-25OMAPDSS: HDMI5: Increase DDC SDA-HOLD timeTomi Valkeinen1-1/+1
It has been observed that the current SDA-HOLD time is too short for some board/cable/monitor combinations. Increase the SDA-HOLD time to 1000ns. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-25OMAPDSS: fix AM43xx minimum pixel clock dividerTomi Valkeinen1-1/+1
AM43xx supports pixel clock divider of 1, just like all OMAP3+ SoCs. Fix the minimum divider value. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-23of: Decrement refcount of previous endpoint in of_graph_get_next_endpointPhilipp Zabel1-6/+1
Decrementing the reference count of the previous endpoint node allows to use the of_graph_get_next_endpoint function in a for_each_... style macro. All current users of this function that pass a non-NULL prev parameter (that is, soc_camera and imx-drm) are changed to not decrement the passed prev argument's refcount themselves. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-02-12mm: gup: use get_user_pages_unlockedAndrea Arcangeli1-4/+2
This allows those get_user_pages calls to pass FAULT_FLAG_ALLOW_RETRY to the page fault in order to release the mmap_sem during the I/O. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andres Lagar-Cavilla <andreslc@google.com> Cc: Peter Feiner <pfeiner@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-11Merge tag 'fbdev-3.20' of ↵Linus Torvalds39-301/+1223
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux Pull fbdev changes from Tomi Valkeinen: - omapdss: add DRA7xxx SoC support - fbdev: support DMT (Display Monitor Timing) calculation * tag 'fbdev-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (40 commits) omapfb: Return error code when applying overlay settings fails OMAPDSS: DPI: DRA7xx support OMAPDSS: HDMI: Add DRA7xx support OMAPDSS: DISPC: program dispc polarities to control module OMAPDSS: DISPC: Add DRA7xx support OMAPDSS: Add Video PLLs for DRA7xx OMAPDSS: Add functions for external control of PLL OMAPDSS: DSS: Add DRA7xx base support Doc/DT: Add DT binding doc for DRA7xx DSS OMAPDSS: add define for DRA7xx HW version OMAPDSS: encoder-tpd12s015: Fix race issue with LS_OE OMAPDSS: OMAP5: fix digit output's allowed mgrs OMAPDSS: constify port arrays OMAPDSS: PLL: add dss_pll_wait_reset_done() OMAPDSS: Add enum dss_pll_id video: fbdev: fix sys_copyarea video/mmpfb: allow modular build fb: via: turn gpiolib and i2c selects into dependencies fbdev: ssd1307fb: return proper error code if write command fails fbdev: fix CVT vertical front and back porch values ...
2015-02-11Merge tag 'media/v3.20-1' of ↵Linus Torvalds1-7/+815
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - Some documentation updates and a few new pixel formats - Stop btcx-risc abuse by cx88 and move it to bt8xx driver - New platform driver: am437x - New webcam driver: toptek - New remote controller hardware protocols added to img-ir driver - Removal of a few very old drivers that relies on old kABIs and are for very hard to find hardware: parallel port webcam drivers (bw-qcam, c-cam, pms and w9966), tlg2300, Video In/Out for SGI (vino) - Removal of the USB Telegent driver (tlg2300). The company that developed this driver has long gone and the hardware is hard to find. As it relies on a legacy set of kABI symbols and nobody seems to care about it, remove it. - several improvements at rtl2832 driver - conversion on cx28521 and au0828 to use videobuf2 (VB2) - several improvements, fixups and board additions * tag 'media/v3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (321 commits) [media] dvb_net: Convert local hex dump to print_hex_dump_debug [media] dvb_net: Use standard debugging facilities [media] dvb_net: Use vsprintf %pM extension to print Ethernet addresses [media] staging: lirc_serial: adjust boolean assignments [media] stb0899: use sign_extend32() for sign extension [media] si2168: add support for 1.7MHz bandwidth [media] si2168: return error if set_frontend is called with invalid parameters [media] lirc_dev: avoid potential null-dereference [media] mn88472: simplify bandwidth registers setting code [media] dvb: tc90522: re-add symbol-rate report [media] lmedm04: add read snr, signal strength and ber call backs [media] lmedm04: Create frontend call back for read status [media] lmedm04: create frontend callbacks for signal/snr/ber/ucblocks [media] lmedm04: Fix usb_submit_urb BOGUS urb xfer, pipe 1 != type 3 in interrupt urb [media] lmedm04: Increase Interupt due time to 200 msec [media] cx88-dvb: whitespace cleanup [media] rtl28xxu: properly initialize pdata [media] rtl2832: declare functions as static [media] rtl2830: declare functions as static [media] rtl2832_sdr: add kernel-doc comments for platform_data ...
2015-02-11Merge branch 'for-linus' of ↵Linus Torvalds1-2/+1
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull m68k updates from Geert Uytterhoeven: "Summary: - switch to asm-generic/futex.h - various cleanups - defconfig updates" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k/defconfig: Enable Ethernet bridging m68k/defconfig: Enable Atari EtherNAT and EtherNEC Ethernet support m68k/defconfig: Enable automounting of devtmpfs at /dev m68k/defconfig: Enable early printk support m68k/defconfig: Enable test modules m68k/defconfig: Refresh defconfigs for v3.16-rc1--v3.19-rc2 m68k/atari: Remove obsolete IRQ_TYPE_* sound: dmasound_atari: Remove obsolete IRQ_TYPE_SLOW video: atafb: Remove obsolete IRQ_TYPE_PRIO parport: parport_atari: Remove obsolete IRQ_TYPE_SLOW net: atarilance: Remove obsolete IRQ_TYPE_PRIO m68k/atari: Remove obsolete keyboard_tasklet scheduling m68k/mac: Fix scsi_type for Mac LC and similar models m68k: Switch to asm-generic/futex.h m68k/mvme147: config.c - Remove unused functions m68k/atari: atakeyb.c - Remove some unused functions m68k/mvme16x: rtc - Don't use module_init in non-modular code
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