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path: root/drivers/video/exynos
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2013-04-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual stuff, mostly comment fixes, typo fixes, printk fixes and small code cleanups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (45 commits) mm: Convert print_symbol to %pSR gfs2: Convert print_symbol to %pSR m32r: Convert print_symbol to %pSR iostats.txt: add easy-to-find description for field 6 x86 cmpxchg.h: fix wrong comment treewide: Fix typo in printk and comments doc: devicetree: Fix various typos docbook: fix 8250 naming in device-drivers pata_pdc2027x: Fix compiler warning treewide: Fix typo in printks mei: Fix comments in drivers/misc/mei treewide: Fix typos in kernel messages pm44xx: Fix comment for "CONFIG_CPU_IDLE" doc: Fix typo "CONFIG_CGROUP_CGROUP_MEMCG_SWAP" mmzone: correct "pags" to "pages" in comment. kernel-parameters: remove outdated 'noresidual' parameter Remove spurious _H suffixes from ifdef comments sound: Remove stray pluses from Kconfig file radio-shark: Fix printk "CONFIG_LED_CLASS" doc: put proper reference to CONFIG_MODULE_SIG_ENFORCE ...
2013-04-29drivers/video/exynos/exynos_mipi_dsi.c: convert to devm_ioremap_resource()Sachin Kamat
Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Donghwa Lee <dh09.lee@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-11video/exynos: remove unnecessary header inclusionsArnd Bergmann
In multiplatform configurations, we cannot include headers provided by only the exynos platform. Fortunately a number of drivers that include those headers do not actually need them, so we can just remove the inclusions. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: linux-fbdev@vger.kernel.org Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2013-03-31treewide: Fix typos in kernel messagesMasanari Iida
Correct spelling typos in various part of printk. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-02-21Merge branch 'akpm' (incoming from Andrew)Linus Torvalds
Merge misc patches from Andrew Morton: - Florian has vanished so I appear to have become fbdev maintainer again :( - Joel and Mark are distracted to welcome to the new OCFS2 maintainer - The backlight queue - Small core kernel changes - lib/ updates - The rtc queue - Various random bits * akpm: (164 commits) rtc: rtc-davinci: use devm_*() functions rtc: rtc-max8997: use devm_request_threaded_irq() rtc: rtc-max8907: use devm_request_threaded_irq() rtc: rtc-da9052: use devm_request_threaded_irq() rtc: rtc-wm831x: use devm_request_threaded_irq() rtc: rtc-tps80031: use devm_request_threaded_irq() rtc: rtc-lp8788: use devm_request_threaded_irq() rtc: rtc-coh901331: use devm_clk_get() rtc: rtc-vt8500: use devm_*() functions rtc: rtc-tps6586x: use devm_request_threaded_irq() rtc: rtc-imxdi: use devm_clk_get() rtc: rtc-cmos: use dev_warn()/dev_dbg() instead of printk()/pr_debug() rtc: rtc-pcf8583: use dev_warn() instead of printk() rtc: rtc-sun4v: use pr_warn() instead of printk() rtc: rtc-vr41xx: use dev_info() instead of printk() rtc: rtc-rs5c313: use pr_err() instead of printk() rtc: rtc-at91rm9200: use dev_dbg()/dev_err() instead of printk()/pr_debug() rtc: rtc-rs5c372: use dev_dbg()/dev_warn() instead of printk()/pr_debug() rtc: rtc-ds2404: use dev_err() instead of printk() rtc: rtc-efi: use dev_err()/dev_warn()/pr_err() instead of printk() ...
2013-02-21video: exynos_dp: move disable_irq() to exynos_dp_suspend()Ajay Kumar
disable_irq() should be moved to exynos_dp_suspend(), because enable_irq() is called at exynos_dp_resume(). Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21video: exynos_dp: add missing of_node_put()Jingoo Han
of_find_node_by_name() returns a node pointer with refcount incremented, use of_node_put() on it when done. of_find_node_by_name() will call of_node_put() against the node pass to from parameter, thus we also need to call of_node_get(from) before calling of_find_node_by_name(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Ajay Kumar <ajaykumar.rs@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21drivers/video/exynos/exynos_mipi_dsi.c: use devm_* APIsSachin Kamat
devm_* APIs are device managed and make exit and cleanup code simpler. While at it also remove some unused labels and fix an error path. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Donghwa Lee <dh09.lee@samsung.com> Cc: Inki Dae <inki.dae@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21drivers/video/exynos/exynos_mipi_dsi.c: fix an error check conditionSachin Kamat
Checking an unsigned variable for negative value returns false. Hence use the macro to fix it. Fixes the following smatch warning: drivers/video/exynos/exynos_mipi_dsi.c:417 exynos_mipi_dsi_probe() warn: unsigned 'dsim->irq' is never less than zero. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Donghwa Lee <dh09.lee@samsung.com> Cc: Inki Dae <inki.dae@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21drivers/video/exynos/s6e8ax0.c: use devm_* APIs in s6e8ax0.cSachin Kamat
devm_* APIs are device managed and make error handling and code cleanup simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Donghwa Lee <dh09.lee@samsung.com> Cc: Inki Dae <inki.dae@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21Merge tag 'tty-3.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial patches from Greg Kroah-Hartman: "Here's the big tty/serial driver patches for 3.9-rc1. More tty port rework and fixes from Jiri here, as well as lots of individual serial driver updates and fixes. All of these have been in the linux-next tree for a while." * tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (140 commits) tty: mxser: improve error handling in mxser_probe() and mxser_module_init() serial: imx: fix uninitialized variable warning serial: tegra: assume CONFIG_OF TTY: do not update atime/mtime on read/write lguest: select CONFIG_TTY to build properly. ARM defconfigs: add missing inclusions of linux/platform_device.h fb/exynos: include platform_device.h ARM: sa1100/assabet: include platform_device.h directly serial: imx: Fix recursive locking bug pps: Fix build breakage from decoupling pps from tty tty: Remove ancient hardpps() pps: Additional cleanups in uart_handle_dcd_change pps: Move timestamp read into PPS code proper pps: Don't crash the machine when exiting will do pps: Fix a use-after free bug when unregistering a source. pps: Use pps_lookup_dev to reduce ldisc coupling pps: Add pps_lookup_dev() function tty: serial: uartlite: Support uartlite on big and little endian systems tty: serial: uartlite: Fix sparse and checkpatch warnings serial/arc-uart: Miscll DT related updates (Grant's review comments) ... Fix up trivial conflicts, mostly just due to the TTY config option clashing with the EXPERIMENTAL removal.
2013-02-21Merge tag 'driver-core-3.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core patches from Greg Kroah-Hartman: "Here is the big driver core merge for 3.9-rc1 There are two major series here, both of which touch lots of drivers all over the kernel, and will cause you some merge conflicts: - add a new function called devm_ioremap_resource() to properly be able to check return values. - remove CONFIG_EXPERIMENTAL Other than those patches, there's not much here, some minor fixes and updates" Fix up trivial conflicts * tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits) base: memory: fix soft/hard_offline_page permissions drivercore: Fix ordering between deferred_probe and exiting initcalls backlight: fix class_find_device() arguments TTY: mark tty_get_device call with the proper const values driver-core: constify data for class_find_device() firmware: Ignore abort check when no user-helper is used firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER firmware: Make user-mode helper optional firmware: Refactoring for splitting user-mode helper code Driver core: treat unregistered bus_types as having no devices watchdog: Convert to devm_ioremap_resource() thermal: Convert to devm_ioremap_resource() spi: Convert to devm_ioremap_resource() power: Convert to devm_ioremap_resource() mtd: Convert to devm_ioremap_resource() mmc: Convert to devm_ioremap_resource() mfd: Convert to devm_ioremap_resource() media: Convert to devm_ioremap_resource() iommu: Convert to devm_ioremap_resource() drm: Convert to devm_ioremap_resource() ...
2013-02-19Merge branch 'for-3.9-cleanups' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue [delayed_]work_pending() cleanups from Tejun Heo: "This is part of on-going cleanups to remove / minimize usages of workqueue interfaces which are deprecated and/or misleading. This round drops a number of usages of [delayed_]work_pending(), which are dangerous as they lack any form of synchronization and thus often lead to buggy / unnecessary code. There are a couple legitimate use cases in kernel. Hopefully, they can be converted and [delayed_]work_pending() can be removed completely. Even if not, removing most of misuses should make it more difficult to find examples of misuses and thus slow down growth of them. These changes are independent from other workqueue changes." * 'for-3.9-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: wimax/i2400m: fix i2400m->wake_tx_skb handling kprobes: fix wait_for_kprobe_optimizer() ipw2x00: simplify scan_event handling video/exynos: don't use [delayed_]work_pending() tty/max3100: don't use [delayed_]work_pending() x86/mce: don't use [delayed_]work_pending() rfkill: don't use [delayed_]work_pending() wl1251: don't use [delayed_]work_pending() thinkpad_acpi: don't use [delayed_]work_pending() mwifiex: don't use [delayed_]work_pending() sja1000: don't use [delayed_]work_pending()
2013-02-14fb/exynos: include platform_device.hArnd Bergmann
Patch 16559ae "kgdb: remove #include <linux/serial_8250.h> from kgdb.h" removed an implicit inclusion of linux/platform_device.h from the exynos framebuffer driver. This adds back the required explicit header file inclusions. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ajay Kumar <ajaykumar.rs@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22video: Convert to devm_ioremap_resource()Thierry Reding
Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages so all explicit error messages can be removed from the failure code paths. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03Drivers: video: remove __dev* attributes.Greg Kroah-Hartman
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-28video/exynos: don't use [delayed_]work_pending()Tejun Heo
There's no need to test whether a (delayed) work item in pending before queueing, flushing or cancelling it. Most uses are unnecessary and quite a few of them are buggy. Remove unnecessary pending tests from exynos_dp_core. Only compile tested. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: remove redundant parametersAjay Kumar
This patch cleans up few redundant parameters keeping the same functionality intact. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Fix incorrect setting for INT_CTLAjay Kumar
INT_CTL register contains bits INT_POL0 and INT_POL1, and not INT_POL. This patch fixes the wrong register setting for INT_CTL. Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Reset and initialize DP before requesting irqAjay Kumar
If DP is not reset properly before kernel bootup(in bootloader code), there can be few pending interrupts, and sometimes they invoke DP irq handler as soon as the irq handler is registered in DP probe. So, we make the DP driver more robust by resetting and initializing DP at the earliest and then registering the irq handler. Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Enable hotplug interruptsSean Paul
Enable hotplug interrupts and move the hotplug scheduling into the interrupt handler. This allows us to introduce a screen at any time while we're running. [jg1.han@samsung.com: moved the bit masking of hotplug interrupts] Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Move hotplug into a workqueueSean Paul
Move the hotplug related code from probe and resume into a workqueue. This allows us to initialize the DP driver (and resume it) when there is no monitor connected. Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Remove sink control to D0Sean Paul
According to DP spec, it is not required in the Link Training procedure. [jg1.han@samsung.com: modified the commit message] Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Fix bug when checking dp->irqSean Paul
Fix a bug where we check !dp->irq instead of the correct check for -ENXIO. Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Improve EDID error handlingSean Paul
EDID error handling has 2 problems: - It doesn't fail as early as it can - The retry counts for i2c and aux transactions are huge This patch fails if the initial i2c transaction fails, and reduces the aux and i2c retry counts down to 3. [jg1.han@samsung.com: reduced the retry count of exynos_dp_read_byte_from_dpcd()] Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Get pll lock before pattern setSean Paul
According to the exynos datasheet (Figure 49-10), we should wait for PLL lock before programming the training pattern when doing software eDP link training. Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Clean up SW link trainingSean Paul
Clean up some of the SW training code to make it more clear and reduce duplicate code. [jg1.han@samsung.com: used exynos_dp_write_bytes_to_dpcd()] Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Check DPCD return codesSean Paul
Add return code checks to the DPCD transactions in the SW link training Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-11-29video: exynos_dp: Add device tree support to DP driverAjay Kumar
This patch enables device tree based discovery support for DP driver. The driver is modified to handle platform data in both the cases: with DT and non-DT. Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com>
2012-10-12Merge tag 'fbdev-updates-for-3.7' of git://github.com/schandinat/linux-2.6Linus Torvalds
Pull fbdev updates from Florian Tobias Schandinat: "This includes: - large updates for OMAP - basic OMAP5 DSS support for DPI and DSI outputs - large cleanups and restructuring - some update to Exynos and da8xx-fb - removal of the pnx4008 driver (arch removed) - various other small patches" Fix up some trivial conflicts (mostly just include line changes, but also some due to the renaming of the deferred work functions by Tejun). * tag 'fbdev-updates-for-3.7' of git://github.com/schandinat/linux-2.6: (193 commits) gbefb: fix compile error video: mark nuc900fb_map_video_memory as __devinit video/mx3fb: set .owner to prevent module unloading while being used video: exynos_dp: use clk_prepare_enable and clk_disable_unprepare drivers/video/exynos/exynos_mipi_dsi.c: fix error return code drivers/video/savage/savagefb_driver.c: fix error return code video: s3c-fb: use clk_prepare_enable and clk_disable_unprepare da8xx-fb: save and restore LCDC context across suspend/resume cycle da8xx-fb: add pm_runtime support video/udlfb: fix line counting in fb_write OMAPDSS: add missing include for string.h OMAPDSS: DISPC: Configure color conversion coefficients for writeback OMAPDSS: DISPC: Add manager like functions for writeback OMAPDSS: DISPC: Configure writeback FIFOs OMAPDSS: DISPC: Configure writeback specific parameters in dispc_wb_setup() OMAPDSS: DISPC: Configure overlay-like parameters in dispc_wb_setup OMAPDSS: DISPC: Add function to set channel in for writeback OMAPDSS: DISPC: Don't set chroma resampling bit for writeback OMAPDSS: DISPC: Downscale chroma if plane is writeback OMAPDSS: DISPC: Configure input and output sizes for writeback ...
2012-10-10video: exynos_dp: use clk_prepare_enable and clk_disable_unprepareJingoo Han
Convert clk_enable/clk_disable to clk_prepare_enable/clk_disable_unprepare calls as required by common clock framework. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-10-10drivers/video/exynos/exynos_mipi_dsi.c: fix error return codePeter Senna Tschudin
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> Acked-by: Donghwa Lee <dh09.lee@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-10-01Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull the trivial tree from Jiri Kosina: "Tiny usual fixes all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits) doc: fix old config name of kprobetrace fs/fs-writeback.c: cleanup riteback_sb_inodes kerneldoc btrfs: fix the commment for the action flags in delayed-ref.h btrfs: fix trivial typo for the comment of BTRFS_FREE_INO_OBJECTID vfs: fix kerneldoc for generic_fh_to_parent() treewide: fix comment/printk/variable typos ipr: fix small coding style issues doc: fix broken utf8 encoding nfs: comment fix platform/x86: fix asus_laptop.wled_type module parameter mfd: printk/comment fixes doc: getdelays.c: remember to close() socket on error in create_nl_socket() doc: aliasing-test: close fd on write error mmc: fix comment typos dma: fix comments spi: fix comment/printk typos in spi Coccinelle: fix typo in memdup_user.cocci tmiofb: missing NULL pointer checks tools: perf: Fix typo in tools/perf tools/testing: fix comment / output typos ...
2012-09-22video: exynos_mipi_dsi: Remove unnecessary NULL checkSachin Kamat
'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 Kamat
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: exynos_dp: increase AUX channel voltage levelJingoo Han
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 Han
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>
2012-09-22video: exynos_dp: replace link_status with link_align to check channel ↵Jingoo Han
equalization To check channel equalization, the value of LANE_ALIGN_STATUS_UPDATED is necessary in exynos_dp_channel_eq_ok(). Also, link_align includes this value. However, link_status does not include this value, so it makes the problem that channel equalization is failed during link training. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-09-01treewide: fix comment/printk/variable typosAnatol Pomozov
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-08-23video: exynos_dp: move setting analog parameter and interrupt to after sw resetJingoo Han
SW reset sets DP TX to initial value, so configurations for analog parameter and interrupt are not set properly. Therefore, exynos_dp_init_analog_param() and exynos_dp_init_interrupt() should be moved to after sw reset is called, in order to set these values properly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-23video: exynos_dp: change return type of exynos_dp_init_video to voidJingoo Han
This patch changes return type of exynos_dp_init_video to void, because the return value is unnecessary. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-23video: exynos_dp: Fix get_pll_lock_status return valueSean Paul
Fix the return value of exynos_dp_get_pll_lock_status to reflect what it actually returns. Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Olof Johansson <olofj@chromium.org> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-23video: exynos_dp: Change aux transaction failuresSean Paul
This patch adds the function name to aux transaction failure messages so we can tell which transaction is failing. It also changes the level of Aux Transaction fail messages from error to debug. We retry the transactions a few times and will report errors if warranted outside of this function. Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Bernie Thompson <bhthompson@chromium.org> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-23video: exynos_dp: check time loop for RPLY_RECEIVJingoo Han
This patch checks time loop for RPLY_RECEIV which means that AUX channel command reply is received. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-23video: exynos-mipi-dsi: Add missing static storage class specifiersSachin Kamat
Fixes the following sparse warnings: drivers/video/exynos/exynos_mipi_dsi.c:208:22: warning: symbol 'exynos_mipi_dsi_find_lcd_device' was not declared. Should it be static? drivers/video/exynos/exynos_mipi_dsi.c:268:22: warning: symbol 'exynos_mipi_dsi_bind_lcd_ddi' was not declared. Should it be static? Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Donghwa Lee <dh09.lee@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-23video: exynos_dp: use devm_clk_get functionDamien Cassou
The devm_clk_get function allocates memory that is released when a driver detaches. This patch uses this function for data that is allocated in the probe function of a platform device and is only freed in the remove function. Additionally, this patch removes a null check after platform_get_resource that is redundant with the one done by devm_request_and_ioremap. Signed-off-by: Damien Cassou <damien.cassou@lifl.fr> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-23video: exynos_dp: adjust voltage swing and pre-emphasis during Link TrainingJingoo Han
This patch adds adjustement for voltage swing and pre-emphasis during Link Training procedure. According to the DP specification, unless all the LANEx_CR_DONE bits are set, the transmitter must read the ADJUST_REQUEST_LANEx_x, increase the voltage swing according to the request, and update the TRAINING_LANEx_SET bytes to match the new voltage swing setting. Refer to the DP specification v1.1a, Section 3.5.1.3 Link Training. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-08-01Merge tag 'fbdev-updates-for-3.6' of git://github.com/schandinat/linux-2.6Linus Torvalds
Pull fbdev updates from Florian Tobias Schandinat: - large updates for OMAP - support for LCD3 overlay manager (omap5) - omapdss output cleanup - removal of passive matrix LCD support as there are no drivers for such panels for DSS or DSS2 and nobody complained (cleanup) - large updates for SH Mobile - overlay support - separating MERAM (cache) from framebuffer driver - some updates for Exynos and da8xx-fb - various other small patches * tag 'fbdev-updates-for-3.6' of git://github.com/schandinat/linux-2.6: (78 commits) da8xx-fb: fix compile issue due to missing include fbdev: Make pixel_to_pat() failure mode more friendly da8xx-fb: do not turn ON LCD backlight unless LCDC is enabled fbdev: sh_mobile_lcdc: Fix vertical panning step video: exynos mipi dsi: Fix mipi dsi regulators handling issue video: da8xx-fb: do clock reset of revision 2 LCDC before enabling arm: da850: configure LCDC fifo threshold video: da8xx-fb: configure FIFO threshold to reduce underflow errors video: da8xx-fb: fix flicker due to 1 frame delay in updated frame video: da8xx-fb rev2: fix disabling of palette completion interrupt da8xx-fb: add missing FB_BLANK operations video: exynos_dp: use usleep_range instead of delay video: exynos_dp: check the only INTERLANE_ALIGN_DONE bit during Link Training fb: epson1355fb: Fix section mismatch video: exynos_dp: fix wrong DPCD address during Link Training video/smscufx: fix line counting in fb_write aty128fb: Fix coding style issues fbdev: sh_mobile_lcdc: Fix pan offset computation in YUV mode fbdev: sh_mobile_lcdc: Fix overlay registers update during pan operation fbdev: sh_mobile_lcdc: Support horizontal panning ...
2012-07-29video: exynos mipi dsi: Fix mipi dsi regulators handling issueDonghwa Lee
When FB_BLANK_UNLANK event occured, exynos mipi dsi regulators have to turn on. Signed-off-by: Donghwa Lee <dh09.lee@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-07-24video: exynos_dp: use usleep_range instead of delayJingoo Han
This patch replaces udelay and mdelay with usleep_range to remove the busy loop waiting. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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