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2012-09-26OMAPDSS: OVERLAY/MANAGER: Get device via outputArchit Taneja2-2/+4
A manager is not connected to a device directly any more. It first connects to an output, and then to the display. Update overlay and manager get_device ops to return the device via the connected output. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: MANAGER: Update display sysfs storeArchit Taneja1-5/+16
The display sysfs attribute's store function needs to be changed with the introduction of outputs. The DSS driver ensures that there is one display per output, and that a registered omap_dss_device will have an output connected to it. The display sysfs store function unsets the current output connected to the manager, and sets it with the output connected to the new display. If the new display doesn't have an output for some reason, we just bail out. The function doesn't set/unset output->device links. These remain the same as when the omap_dss_device was registered. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPFB: Change dssdev->manager referencesArchit Taneja1-2/+5
To retrieve the manager pointer via a device, we need to now access it via the output to which the device is connected. Make this change in omapfb_ioctl() where the WAITFORVSYNC ioctl tries to access the manager's device. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: HDMI: Replace dssdev->manager with dssdev->output->manager referencesArchit Taneja1-6/+10
With addition of output entities, a device connects to an output, and an output connects to overlay manager. Replace the dssdev->manager references with dssdev->output->manager to access the manager correctly. When enabling the HDMI output, check whether the output entity connected to display is not NULL. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: VENC: Replace dssdev->manager with dssdev->output->manager referencesArchit Taneja1-5/+9
With addition of output entities, a device connects to an output, and an output connects to overlay manager. Replace the dssdev->manager references with dssdev->output->manager to access the manager correctly. When enabling the VENC output, check whether the output entity connected to display is not NULL. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: RFBI: Replace dssdev->manager with dssdev->output->manager referencesArchit Taneja1-6/+9
With addition of output entities, a device connects to an output, and an output connects to overlay manager. Replace the dssdev->manager references with dssdev->output->manager to access the manager correctly. When enabling the RFBI output, check whether the output entity connected to display is not NULL. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: SDI: Replace dssdev->manager with dssdev->output->manager referencesArchit Taneja1-8/+12
With addition of output entities, a device connects to an output, and an output connects to overlay manager. Replace the dssdev->manager references with dssdev->output->manager to access the manager correctly. When enabling the SDI output, check whether the output entity connected to display is not NULL. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: DSI: Replace dssdev->manager with dssdev->output->manager referencesArchit Taneja1-14/+23
With addition of output entities, a device connects to an output, and an output connects to overlay manager. Replace the dssdev->manager references with dssdev->output->manager to access the manager correctly. When enabling the DSI output, check whether the output entity connected to display is not NULL. In dsi_init_display(), the display won't be connected to the DSI output yet, that happens later in dss_recheck_connections() in the panel driver's probe. Get the dsidev platform device pointer using the DSI moudle number provided in the omap_dss_device struct. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: DSI: Remove dsi_pdev_map global structArchit Taneja1-5/+9
dsi_pdev_map is a struct visible globally in the DSI driver to get the platform device pointer of the DSI device corresponding to it's module ID. This was required because there was no clean way to derive the platform device from the DSI module instance number or from the connected panel. With the new output entity, it is possible to retrieve the platform device pointer if the omap_dss_output pointer is available. Modify the functions dsi_get_dsidev_from_dssdev() dsi_get_dsidev_from_id() so that they use output instead of dsi_pdev_map to retrieve the dsi platform device pointer. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: DPI: Replace dssdev->manager with dssdev->output->manager referencesArchit Taneja1-9/+16
With addition of output entities, a device connects to an output, and an output connects to overlay manager. Replace the dssdev->manager references with dssdev->output->manager to access the manager correctly. When enabling the DPI output, check whether the output entity connected to display is not NULL. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: Create links between managers, outputs and devicesArchit Taneja3-8/+61
Links between DSS entities are made in dss_init_connections() when a panel device is registered, and are removed in dss_uninit_connections() when the device is unregistered. Modify these functions to incorporate the addition of outputs. The fields in omap_dss_device struct gives information on which output and manager to connect to. The desired manager and output pointers are retrieved and prepared to form the desired links. The output is linked to the device, and then the manager to the output. A helper function omapdss_get_output_from_device() is created to retrieve the output from the display by checking it's type, and the module id in case of DSI. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPFB: remove manager->device referencesArchit Taneja2-4/+7
With the introduction of output entities, managers will now connect to outputs. Use the helper op for overlays named get_device. This will abstract away the information on how to get the device from an overlay. Using the helper function will reduce the number of pointer dereferences a user of OMAPDSS needs to do and reduce risk of a NULL dereference. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: Remove manager->device referencesArchit Taneja5-10/+29
With the introduction of output entities, managers will now connect to outputs. Create helper ops for overlays and managers named get_device. This will abstract away the information on how to get the device from an overlay or an overlay manager. The get_device ops currently retrieve the output via a ovl->manager->device reference. This will be later replaced by ovl->manager->output->device references. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: APPLY: Add manager set/unset output ops for omap_overlay_managerArchit Taneja5-0/+149
Add set_output/unset_output ops for overlay managers, these form links between managers and outputs. Create a function in dss features which tell all the output instances that connect to a manager, use it when a manager tries to set an output. Add a constraint of not unsetting an output when the manager is enabled. Keep the omap_dss_device pointer and set/unset_device ops in overlay_manager for now to not break things. Keep the dss feature function get_supported_displays as it's used in some places. These will be removed later. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: output: Add set/unset device ops for omap_dss_outputArchit Taneja1-0/+67
An output entity represented by the struct omap_dss_output connects to a omap_dss_device entity. Add functions to set or unset an output's device. This is similar to how managers and devices were connected previously. An output can connect to a device without being connected to a manager. However, the output needs to eventually connect to a manager so that the connected panel can be enabled. Keep the omap_overlay_manager pointer in omap_dss_device for now to prevent breaking things. This will be removed later when outputs are supported completely. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: outputs: Create and register output instancesArchit Taneja6-0/+150
Add output structs to output driver's private data. Register output instances by having an init function in the probes of the platform device drivers for different outputs. The *_init_output for each output registers the output and fill up the output's plaform device, type and id fields. The *_uninit_output functions unregister the output. In the probe of each interface driver, the output entities are initialized before the *_probe_pdata() functions intentionally. This is done to ensure that the output entity is prepared before the panels connected to the output are registered. We need the output entities to be ready because OMAPDSS will try to make connections between overlays, managers, outputs and devices during the panel's probe. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: outputs: Create a new entity called outputsArchit Taneja3-1/+53
The current OMAPDSS design contains 3 software entities: Overlays, Managers and Devices. These map to pipelines, overlay managers and the panels respectively in hardware. One or more overlays connect to a manager to represent a composition, the manager connects to a device(generally a display) to display the content. The part of DSS hardware which isn't represented by any of the above entities are interfaces/outputs that connect to an overlay manager, i.e blocks like DSI, HDMI, VENC and so on. Currently, an overlay manager directly connects to the display, and the output to which it is actually connected is ignored. The panel driver of the display is responsible of calling output specific functions to configure the output. Adding outputs as a new software entity gives us the following benefits: - Have exact information on the possible connections between managers and outputs: A manager can't connect to each and every output, there only limited hardware links between a manager's video port and some of the outputs. - Remove hacks related to connecting managers and devices: Currently, default links between managers and devices are set in a not so clean way. Matching is done via comparing the device type, and the display types supported by the manager. This isn't sufficient to establish all the possible links between managers, outputs and devices in hardware. - Make panel drivers more generic: The DSS panel drivers currently call interface/output specific functions to configure the hardware IP. When making these calls, the driver isn't actually aware of the underlying output. The output driver extracts information from the panel's omap_dss_device pointer to figure out which interface it is connected to, and then configures the corresponding output block. An example of this is when a DSI panel calls dsi functions, the dsi driver figures out whether the panel is connected to DSI1 or DSI2. This isn't correct, and having output as entities will give the panel driver the exact information on which output to configure. Having outputs also gives the opportunity to make panel drivers generic across different platforms/SoCs, this is achieved as omap specific output calls can be replaced by ops of a particular output type. - Have more complex connections between managers, outputs and devices: OMAPDSS currently doesn't support use cases like 2 outputs connect to a single device. This can be achieved by extending properties of outputs to connect to more managers or devices. - Represent writeback as an output: The writeback pipeline fits well in OMAPDSS as compared to overlays, managers or devices. Add a new struct to represent outputs. An output struct holds pointers to the manager and device structs to which it is connected. Add functions which can register/unregister an output, or look for one. Create an enum which represent each output instance. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: APPLY: Remove omap_dss_device references in wait_for_go functionsArchit Taneja1-11/+25
The functions dss_mgr_wait_for_go() and dss_mgr_wait_for_go_ovl() check if there is an enabled display connected to the manager before trying to see the state of the GO bit. The checks related to the display can be replaced by checking the state of the manager, i.e, whether the manager is enabled or not. This makes more sense than checking with the connected display as the GO bit behaviour is more connected with the manager state rather than the display state. A GO bit can only be set if the manager is enabled. If a manager isn't enabled, we can safely assume that the GO bit is not set. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: DSI: Pass dsi platform device wherever possibleArchit Taneja1-50/+39
Many of the DSI functions receive the connected panel's omap_dss_device pointer as an argument. The platform device pointer is then derived via omap_dss_device pointers. Most of these functions don't really require omap_dss_device pointer anymore since we now keep copies of parameters in the driver data which were previously available only via omap_dss_device. Replace the arguments with platform device pointers for such functions. Signed-off-by: Archit Taneja <archit@ti.com>
2012-09-26OMAPDSS: DSI: fix tlpx_half reg field lengthTomi Valkeinen1-2/+2
tlpx_half bit field in DSI_DSIPHY_CFG1 is [20,16], not [22,16] as accessed in the code currently. Fix this. The bug should not have caused any problems on OMAP3/4, as the bits 21,22 are unused. They are used on OMAP5, though. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-25OMAPDSS: DISPC: Add predecimation limit for TILER based rotationsChandrabhanu Mahapatra1-3/+6
In OMAP4 and OMAP5 when TILER 2D burst mode is used, a maximum of one line can be skipped as per the respective TRMs. The MBlockStride OCP signal, which is sum of ROWINC and image width in memory, is only 17 bits wide. In 2D mode TILER supports 8192, 16384, 32768 and 65536 values of MBlockStride. In case when 2 or more lines are skipped the ROWINC value exceeds 65536 resulting in OCP errors. So, maximum vertical predecimation achievable is 2. Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-25backlight: Add TPS65217 WLED driverMatthias Kaehlcke3-0/+360
The TPS65217 chip contains a boost converter and current sinks which can be used to drive LEDs for use as backlights. Expose this functionality via the backlight API. Tested on an AM335x based custom board with a single WLED string, using different values for ISEL and FDIM (though it would be hard to tell the difference except for the value in WLEDCTRL1). Both instantiation through the device tree and by passing platform data have been tested. Testing has been done with an Androidized 3.2 kernel from the rowboat project. Koen Kooi reported the driver to be working on a Beaglebone board with LCD3 cape Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-09-25Merge OMAP5 DSS changes to omapdssTomi Valkeinen8-60/+337
This series adds basic OMAP5 DSS functionality, mainly related to DSS core, DPI and DSI. * omap5-dss: OMAPDSS: DSI: make OMAP2_DSS_DSI depend on ARCH_OMAP5 OMAPDSS: DSI: Add code to disable PHY DCC OMAPDSS: DSI: Add new linebuffer size for OMAP5 OMAPDSS: DSI: Add FEAT_DSI_PLL_REFSEL OMAPDSS: DSI: Add FEAT_DSI_PLL_SELFREQDCO OMAPDSS: Add support for DPI source selection OMAPDSS: move dss feats to the end of dss.c OMAPDSS: Add basic omap5 features to dss and dispc OMAPDSS: DSI: improve DSI clock calcs for DISPC
2012-09-25Merge omapdss single-dssdev seriesTomi Valkeinen10-198/+428
This series contains patches that change how omapdss's panel devices (omap_dss_device) are initialized and registered. There are two patches that change behaviour, the rest are just cleanups: The patch "omap_dss_register_device() doesn't take display index" affects the number for the "displayX" sysfs files. This hopefully doesn't affect the userspace, as the number has never been a clear indication of what the particular display is. The patch "register only one display device per output" affects how panel devices are created. Currently we support multiple panels per output, i.e. you could have DVI and an LCD displays using the same DPI output, as long as the DVI and LCD are not used at the same time. This patch changes the omapdss driver to only register one display device per output. If there are multiple displays for the output, either the first one is picked or, if def_display has been defined in kernel parameters and the def_display is one of the displays for this output, the def_display is picked. See the patch for more information. OMAPDSS: alloc dssdevs dynamically OMAPDSS: cleanup dss_recheck_connections further OMAPDSS: cleanup dss_recheck_connections OMAPDSS: handle errors in dss_init_device OMAPDSS: explicitely initialize dssdev->channel for new displays OMAPDSS: register only one display device per output OMAPDSS: Add dss_get_default_display_name() OMAPDSS: omap_dss_register_device() doesn't take display index
2012-09-25OMAPDSS: Do not require a VDDS_DSI regulator on AM35xxRaphaël Assénat1-2/+49
On our AM3505 based board, dpi.c complains that there is no VDDS_DSI regulator and the framebuffer cannot be enabled. However, this check does not seem to apply to AM3505/17 chips. This patch adds new features list for AM35xxx, which is the same as for OMAP3 except the VDDS_DSI is removed. Signed-off-by: Raphael Assenat <raph@8d.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: DSI: make OMAP2_DSS_DSI depend on ARCH_OMAP5Tomi Valkeinen1-1/+1
Change omapdss Kconfig file to make OMAP2_DSS_DSI depend on ARCH_OMAP5. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: DSI: Add code to disable PHY DCCTomi Valkeinen3-0/+9
OMAP5 DSI PHY has DCC (Duty Cycle Corrector) block, and by default DCC is enabled and thus the PLL clock is divided by 2 to get the DSI DDR clk. This divider has been 4 for all previous OMAPs, and changing it needs some reorganization of the code. The DCC can be disabled, and in that case the divider is back to the old 4. This patch adds dss feature for the DCC, and adds code to always disable the DCC. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: DSI: Add new linebuffer size for OMAP5Tomi Valkeinen1-0/+2
OMAP5's DSI has a larger line buffer than earlier OMAPs. This patch adds support for this to the DSI driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: DSI: Add FEAT_DSI_PLL_REFSELTomi Valkeinen3-0/+4
Add FEAT_DSI_PLL_REFSEL. OMAP5's DSI PLL needs configuration to select the reference clock to be used. We always use SYSCLK. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: DSI: Add FEAT_DSI_PLL_SELFREQDCOTomi Valkeinen3-4/+10
Add FEAT_DSI_PLL_SELFREQDCO. OMAP5's DSI PLL has a new configuration option that needs to be programmed depending on the PLL's output clock frequency. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: Add support for DPI source selectionTomi Valkeinen3-0/+71
We can select the video source for DPI output as follows: OMAP2/3: always LCD1 OMAP4: LCD2 or DIGIT OMAP5: LCD1/LCD2/LCD3/DIGIT This patch adds support to select the source, and makes dpi.c call the function to set the source. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: David Anders <x0132446@ti.com>
2012-09-24OMAPDSS: move dss feats to the end of dss.cTomi Valkeinen1-30/+30
Move dss_features to the end of dss.c the same way they are in dispc.c, so that we don't have to declare prototypes for static feat-related functions. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: Add basic omap5 features to dss and dispcArchit Taneja3-0/+103
Add basic omap5 features for dss and dispc. Signed-off-by: Archit Taneja <archit@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-24OMAPDSS: DSI: improve DSI clock calcs for DISPCTomi Valkeinen1-31/+113
Commit ee144e645a081daad5de1ccac77f0a0e98e6a67b added dsi_pll_calc_ddrfreq() which calculates PLL dividers based on given DSI bus clock speed. The function works ok, but it can be improved for the DISPC clock calc. The current version calculates the clock going from the PLL to the DISPC simply by setting the clock as close to DISPC maximum as possible, and the pixel clock is calculated based on that. This patch changes the function to calculate DISPC clock more dynamically, iterating through different DISPC clocks and pixel clock values, and thus we'll get more suitable pixel clocks. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-09-23Merge tag 'vt8500-for-next' of git://git.code.sf.net/p/linuxwmt/code into next/dtOlof Johansson4-30/+161
From Tony Prisk: Update arch-vt8500 and drivers to device tree and remove existing non-dt code. * tag 'vt8500-for-next' of git://git.code.sf.net/p/linuxwmt/code: arm: vt8500: Update arch-vt8500 to devicetree support. arm: vt8500: gpio: Devicetree support for arch-vt8500 arm: vt8500: doc: Add device tree bindings for arch-vt8500 devices arm: vt8500: clk: Add Common Clock Framework support video: vt8500: Add devicetree support for vt8500-fb and wm8505-fb serial: vt8500: Add devicetree support for vt8500-serial rtc: vt8500: Add devicetree support for vt8500-rtc arm: vt8500: Add device tree files for VIA/Wondermedia SoC's Resolved add/change conflict in drivers/clk/Makefile. Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-22video: exynos_mipi_dsi: Remove unnecessary NULL checkSachin Kamat1-5/+0
'dsim' is allocated and checked for NULL in the probe function. Hence this check is redundant. This cleanup also fixes a potential NULL pointer dereference error when dsim which is NULL references its member in the error print message. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22video: exynos_mipi_dsi: Remove unused codeSachin Kamat1-3/+0
This code is never executed and hence removed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22video: msm: Remove useless mach/* includesStephen Boyd3-5/+0
This driver doesn't need to use these mach includes so remove them. This is a necessary step to support a single zImage. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/arcfb.c: fix error return codePeter Senna Tschudin1-0/+1
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/ps3fb.c: fix error return codePeter Senna Tschudin1-1/+6
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/cyber2000fb.c: fix error return codePeter Senna Tschudin1-1/+3
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/bw2.c: fix error return codePeter Senna Tschudin1-1/+3
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/imxfb.c: fix error return codePeter Senna Tschudin1-0/+1
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/atmel_lcdfb.c: fix error return codePeter Senna Tschudin1-1/+4
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/sunxvr500.c: fix error return codePeter Senna Tschudin1-2/+6
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/cg3.c: fix error return codePeter Senna Tschudin1-1/+2
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/sunxvr1000.c: fix error return codePeter Senna Tschudin1-1/+3
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22drivers/video/mb862xx/mb862xxfbdrv.c: fix error return codePeter Senna Tschudin1-3/+7
Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22video: exynos_dp: increase AUX channel voltage levelJingoo Han2-2/+2
The value of AUX channel differential amplitude current is changed from 8 mA to 16 mA, in order to increase AUX channel voltage level. In this case, AUX channel voltage level can be changed from 400 mV to 800 mV, when resistance between AUX TX and RX is 100 ohm. According to DP spec, although the normative voltage level is 390 mV, the informative voltage level is 430 mV. So, 800 mV can be helpful to improve voltage margin of AUX channel. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-22video: exynos_dp: add bit-masking for LINK_TRAINING_CTL registerJingoo Han2-4/+13
This patch adds bit-masking for LINK_TRAINING_CTL register, when pre-emphasis level is set. The bit 3 and bit 2 of LINK_TRAINING_CTL register are used for pre-emphasis level setting, so other bits should be masked. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>