aboutsummaryrefslogtreecommitdiff
path: root/drivers
AgeCommit message (Collapse)Author
2014-04-22clocksource: arm_global_timer: Only check for unusable timer on A9Matthew Leach
The check for a usable global timer in the probe code does not enquire which CPU we are currently running on. This can cause the driver to incorrectly assume we have an unusable global timer if we are running on a CPU other than A9. Before checking the CPU revision, ensure we are running on an A9 CPU. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Matthew Leach <matthew.leach@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2014-04-22drm: kill drm_bus->bus_typeDaniel Vetter
Completely unused. Hooray, midlayer mistakes that didn't cause work to undo! v2: Rebase on top of the recent tegra changes which added a host1x drm bus. Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm: remove drm_dev_to_irq from driversDaniel Vetter
Only used in some legacy pci drivers, and dereferencing the PCI irq is actually shorter ... Since this removes all users for drm_dev_to_irq from the tree except in drm_irq.c, move the inline helper in there. It'll disappear soon, too. v2: Polish commit message (Thierry) Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/irq: remove cargo-culted locking from irq_install/uninstallDaniel Vetter
The dev->struct_mutex locking in drm_irq.c only protects dev->irq_enabled. Which isn't really much at all and only prevents especially nasty ums userspace from concurrently installing the interrupt handling a few times. Or at least trying. There are tons of unlocked readers of dev->irqs_enabled in the vblank wait code (and by extension also in the pageflip code since that uses the same vblank timestamp engine). Real modesetting drivers should ensure that nothing can go haywire with a sane setup teardown sequence. So we only really need this for the drm_control ioctl, everywhere else this will just paper over nastiness. Note that drm/i915 is a bit specially due to the gem+ums combination. So there we also need to properly protect the entervt and leavevt ioctls. But it's definitely saner to do everything in one go than to drop the lock in-between. Finally there's the gpu reset code in drm/i915. That one's just race (concurrent userspace calls to for vblank waits of pageflips could spuriously fail). So wrap it up in with a nice comment since fixing this is more involved. v2: Rebase and fix commit message (Thierry) Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/irq: drm_control is a legacy ioctl, so pci devices onlyDaniel Vetter
This just adds a correspdonding check, follow-up patches will exploit this. v2: Whitespace polish (Thierry) Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/pci: fold in irq_by_busid supportDaniel Vetter
This is a ums-only ioctl, and we've only ever supported ums (at least in upstream) on pci devices. So no point in keeping that piece of legacy logic abstracted within the drm bus driver. To keep things work without CONFIG_PCI also add a dummy ioctl. v2: Block the irq_by_busid ioctl for modeset drivers. v3: Spelling/whitespace polish (Thierry) Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/irq: simplify irq checks in drm_wait_vblankDaniel Vetter
Checking for both an irq number _and_ whether it's enabled is redundant. Originally I've thought the drm_dev_to_irq call would break drivers which do their own irq checking, but those shouldn't have DRIVER_HAVE_IRQ set as Thierry Reding pointed out. But such drivers already need to set dev->irq_enabled for other reasons, so we might as well ditch that check, too. v2: Also drop the HAVE_IRQ check. Cc: Thierry Reding <thierry.reding@gmail.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/crtc-helper: gc usless connector loop in disable_unused_functionsDaniel Vetter
I've forgotten to clean this all up correctly in commit e3d6ddb35f6221859b6054879d186e13a3af351e Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Tue Apr 1 22:15:00 2014 +0200 drm/crtc-helper: don't disable disconnected outputs Reported-by: Russell King - ARM Linux <linux@arm.linux.org.uk> Cc: Russell King - ARM Linux <linux@arm.linux.org.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/plane_helper: don't disable plane in destroy functionDaniel Vetter
By the time drm_mode_config_cleanup calls this all the hw state should be cleaned up already - we even have a WARN right before calling plane->destroy callbacks asserting that all framebuffers are gone. So trying to disable things harder is a bit a bug. Caught by Thierry since it resulted in some mode_config.mutex locking backtraces. Cc: Thierry Reding <treding@nvidia.com> Cc: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Tested-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/plane-helper: Fix primary plane scaling checkMatt Roper
The src_w / src_h parameters to update_plane include a subpixel offset; we need to shift off the subpixel bits before comparing to CRTC size when checking for primary plane scaling. Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm: make mode_valid callback optionalAndrzej Hajda
Many drm connectors do not need mode validation. The patch makes this callback optional and removes dumb implementations. v2: Rebase: - imx move to a shared (but still dummy) ->mode_valid implementation. - probe helpers have been extracted to drm_probe_helper.c Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> (v1) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22drm/radeon/aux: fix hpd assignment for aux busAlex Deucher
The hpd (hot plug detect) pin assignment got lost in the conversion to to the common i2c over aux code. Without this information, aux transactions do not work properly. Fixes DP failures. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2014-04-22drm/edid: Fill PAR in AVI infoframe based on CEA mode listVandana Kannan
Populate PAR in infoframe structure. If there is a user setting for PAR, then that value is set. Else, value is taken from CEA mode list if VIC is found. Else, PAR is calculated from resolution. If none of these conditions are satisfied, PAR is NONE as per initialization. v2: Removed the part which sets PAR according to user input, based on Daniel's review comments. A separate patch will be submitted to create a property that would enable a user space app to set aspect ratio for AVI infoframe. v2: Removed the part which sets PAR according to user input, based on Daniel's review comments. v3: Removed calculation of PAR for non-CEA modes as per discussion with Ville. A separate patch will be submitted to create a property that would enable a user space app to set aspect ratio for AVI infoframe. Signed-off-by: Vandana Kannan <vandana.kannan@intel.com> Cc: Jesse Barnes <jesse.barnes@intel.com> Cc: Vijay Purushothaman <vijay.a.purushothaman@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: intel-gfx@lists.freedesktop.org Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> [danvet: Squash in fixup for htmldocs.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-22pinctrl: st: Use ARRAY_SIZE for STiH415 dataMaxime COQUELIN
This patch completes the one that used ARRAY_SIZE for STiH407 and STiH416 for setting ninput_delays and noutput_delays fields. Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: st: Use const qualifier when requiredMaxime COQUELIN
This patch adds const qualifier where applicable. Reported-by: Joe Perches <joe@perches.com> Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: lantiq: Fix header file include guardAxel Lin
Define __PINCTRL_LANTIQ_H to prevent multiple inclusion. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: adi2: Statize adi_gpio_irq_domain_opsAxel Lin
It's only referenced in this file, make it static. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: sh-pfc: r8a7791: Split the DU sync and cde/disp groupsLaurent Pinchart
The DU parallel interface ODDF signal is optional, move it out of the HSYNC/VSYNC group into a group of its down. The CDE and DISP signals are independent, split them to two different groups. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: msm8x74: make Kconfig dependency more strictUwe Kleine-König
This driver is only useful on MSM8x74, so let the driver depend on ARCH_QCOM but allow compile coverage testing. The main benefit is that the driver isn't available to be selected for machines that don't have the matching hardware. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: msm: Add definitions for the APQ8064 platformBjorn Andersson
This adds pinctrl definitions for the GPIO pins of the TLMM v2 block in the Qualcomm APQ8064 platform. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: msm: Make number of functions variableBjorn Andersson
The various pins may have different number of functions defined, so make this number definable per pin instead of just increasing it to the largest one for all of the platforms. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22pinctrl: st: use gpiolib irqchip helpersLinus Walleij
This lets the gpiolib core handle the irqchip set-up and chained IRQ on the primary (behind the mux) IRQ chip in the st pinctrl driver. Default irq type is set to level low at irqchip add time. The v1 was sent by Linus (https://lkml.org/lkml/2014/4/4/287). Two changes were necessary to make it to work properly on STiH416: 1 - dev reference was not passed to the gpio_chip struct, causing a panic. 2 - gpiochip_irqchip_add passed IRQ_TYPE_NONE as default type, which caused lot of warnings at init time. I choose IRQ_TYPE_LEVEL_LOW as default. Cc: Srinivas Kandagatla <srinivas.kandagatla@gmail.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Maxime COQUELIN <maxime.coquelin@st.com>
2014-04-22pinctrl: st: switch IRQ locking to resource callbacksLinus Walleij
In the mass-conversion to the new irqchip callbacks, this in-transit IRQ support was missed. Fix it. Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com> Cc: Maxime COQUELIN <maxime.coquelin@st.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-22extcon: palmas: explicitly set edev name as node nameKishon Vijay Abraham I
commit ca488 (extcon: of: Remove unnecessary function call by using the name of device_node) started using node name instead of device name to get the extcon device. This breaks dwc3-omap since it's not able to get the extcon device anymore. Fixed it by setting edev name of palmas to be the same as its node name. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reported-by: Felipe Balbi <balbi@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2014-04-22video: Check EDID for HDMI connectionDavid Ung
Check EDID Vendor Specific Data Block bytes to see if the connection is HDMI and set FB_MISC_HDMI. Signed-off-by: David Ung <davidu@nvidia.com> Signed-off-by: Christopher Freeman <cfreeman@nvidia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-04-22video: da8xx-fb: Add support for Densitron 84-0023-001TJon Ringle
Signed-off-by: Jon Ringle <jringle@gridpoint.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-04-21i40e/i40evf: add tracking to NVM busy stateShannon Nelson
The NVM updates take some time and are asynchronous actions that signal their completion with an AdminQ event. This code tracks when there is an NVM update outstanding and won't allow a new update command until a completion event is received from the current update. Change-ID: Ic132fe16bd9dc09b002ed38297a877c1a01553ce Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: Mitch Williams <mitch.a.williams@intel.com> Acked-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21i40e: Fix an issue with displaying IPv4 FD filtersAnjali Singhai Jain
The flow spec coming in for IPv4 filters is IP_USER_FLOW, which needed some more info to be communicated up above in order for it to be displayed correctly. Change-ID: Ia968238e0d7c4c4df12908ba81f0c4501280f3ec Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21i40e: Remove a FW workaroundCatherine Sullivan
Remove the FW workaround to increment the number of msix vectors. Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21i40e/i40evf: Bump build versionsCatherine Sullivan
Bump i40e to 0.3.41 and i40evf to 0.9.20. Change-ID: If49251a1a81a0f25e8f74bc8b7d086befb6df676 Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21i40e: Enable VF Tx bandwidth settingMitch Williams
Implement the net device op for Tx bandwidth setting. Setting the Tx bandwidth is done by 'ip link set <PF device> vf <VF num> rate <Tx rate>', with the rate specified in Mbit/sec. The rate setting is displayed with 'ip link show'. Change-ID: I4d45dda8320632fdb6ec92c87d083e51070b46ab Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21i40e: Reset the VF upon conflicting VLAN configurationGreg Rose
If a host VMM administrator hoses his VF by assigning a port VLAN after it is already up and running with implicit permission to set local VLANs then we print a message warning the host administrator that the VF driver needs to be reloaded. In addition we need to knock the VF offline so that it does not continue to receive traffic not on the port VLAN assigned to it. So we reset the VF. The VF will cease operation and the administrator will be forced to unload and reload the VF driver to make it work again. Change-ID: Iae1ae006b244e74e30a4ee546b3c5fca5cfb40aa Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21i40e/i40evf: unhide and enable to one prefena fieldJesse Brandeburg
The PREFENA field in the receive host memory cache (RX-HMC) must be visible in order to be set to 1 at driver init for best performance. Change-ID: I16b0bcd84cf56f4b6c938201ff5e954bee5a1992 Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21i40e: Add bridge FDB add/del/dump opsGreg Rose
Add the netdev ops to support addition of static FDB entries in the physical function (PF) MAC/VLAN filter table so that virtual functions (VFs) can communicate with bridged virtual Ethernet ports such as those provided by the virtio driver. Change-ID: Ifbd6817a75074e3b5cdf945a5635f26440bf15df Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-04-21cciss: Use pci_enable_msix_exact() instead of pci_enable_msix()Alexander Gordeev
As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() or pci_enable_msi_exact() and pci_enable_msix_range() or pci_enable_msix_exact() interfaces. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Cc: Mike Miller <mike.miller@hp.com> Cc: iss_storagedev@hp.com Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-pci@vger.kernel.org Signed-off-by: Jens Axboe <axboe@fb.com>
2014-04-21skd: Use pci_enable_msix_exact() instead of pci_enable_msix_range()Alexander Gordeev
Function pci_enable_msix_exact() is a variation of pci_enable_msix_range() that allows a device driver to request a particular number of MSI-X interrupts, rather than any number within a specified range. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: linux-pci@vger.kernel.org Signed-off-by: Jens Axboe <axboe@fb.com>
2014-04-22NFC: st21nfca: Improve st21nfca initialization by handling reboot properlyChristophe Ricard
Change in st21nfca_hci_platform_init in order to handle in a better way the internal reboot command. Once the reboot is completed, the driver expect to receive a 0x7e filled buffer. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Reworked st21nfca_request_resourcesChristophe Ricard
Remove struct st21nfca_i2c_phy* as this parameter can be retrieve through i2c_get_clientdata(client) Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: st21nfca_hci_i2c_probe returns st21nfca_hci_probe result.Christophe Ricard
st21nfca_hci_probe return 0 in case of successful call and a different value in any other cases. There is no need to check for st21nfca_hci_probe return as this will be checked after st21nfca_hci_i2c_probe is completed. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Add __packed to struct st21nfca_pipe_infoChristophe Ricard
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Remove sporadic wait_tab variable from functions.Christophe Ricard
wait_tab variable is already global and may create conflicts. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Fix warning: array subscript is above array boundsChristophe Ricard
Fix "warning: array subscript is above array bounds" in load_session Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Fix sparse: cast to restricted __be16Christophe Ricard
Fixing "sparse: cast to restricted __be16" message when building with make C=1 CF=-D__CHECK_ENDIAN__ Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: pn544_i2c: Fix null pointer exception when not using platform dataClement Perrochaud
Fixes a null pointer exception occurring when the IRQ request in pn544_hci_i2c_probe fails and no platform data is available. Signed-off-by: Clément Perrochaud <clement.perrochaud@nxp.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Add support for the ISO/IEC 14443-B and Type 4B tagsMark A. Greer
Now that the NFC digital layer has support for the ISO/IEC 14443-B protocol and type 4B tags, add the corresponding support to the trf7970a driver. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Add 'autosuspend-delay' DTS propertyMark A. Greer
The trf7970a driver currently uses a fixed autosuspend delay of 30 seconds. To enable users to customize the delay as they see fit, add support for the new 'autosuspend-delay' DTS property (part of the nfc node) which can override the default 30 seconds. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Don't return value from trf7970a_switch_rf_on()Mark A. Greer
trf7970a_switch_rf_on() no longer returns anything other than 0 so make it void and clean up the code that checks for errors when its called. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Add pm_runtime supportMark A. Greer
Add pm_runtime support by moving the code that enables the trf7970a to the pm_runtime hook routines. The pm_runtime 'autosuspend' feature is used so that the device isn't disabled until at least 30 seconds have passed since trf7970a_switch_rf_off() was last called. The result is that when trf7970a_switch_rf_on() is called, the device will be enabled and initialized (if it isn't already). When trf7970a_switch_rf_off() is called, it will turn off the RF immediately but leave the device enabled for at least 30 seconds. If 30 seconds have passed and the pm_runtime facility decides to suspend the driver, the device will be disabled then. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Turn RF on after hardware is configuredMark A. Greer
The NFC digital layer calls the 'switch_rf' hook to turn the RF on before it configures the RF technology and framing. There is potential to confuse a tag doing it this way so don't enable the RF until the RF technology and initial framing have been configured. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Set correct Vin voltage in Chip Status Control registerMark A. Greer
Currently, the trf7970a driver assumes that the Vin voltage is 5V when it writes to the 'Chip Status Control' register. That may not be correct so use the regulator facility to get the Vin voltage and set the VRS5_3 bit correctly when writing to that register. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>