kernel/linux.git/drivers/gpu/drm/sun4i, branch v4.19.39

drm/sun4i: tcon: Prepare and enable TCON channel 0 clock at init

2019-03-13T21:02:36+00:00

[ Upstream commit b14e945bda8ae227d1bf2b1837c0c4a61721cd1a ] When initializing clocks, a reference to the TCON channel 0 clock is obtained. However, the clock is never prepared and enabled later. Switching from simplefb to DRM actually disables the clock (that was usually configured by U-Boot) because of that. On the V3s, this results in a hang when writing to some mixer registers when switching over to DRM from simplefb. Fix this by preparing and enabling the clock when initializing other clocks. Waiting for sun4i_tcon_channel_enable to enable the clock is apparently too late and results in the same mixer register access hang. Signed-off-by: Paul Kocialkowski Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20190131132550.26355-1-paul.kocialkowski@bootlin.com Signed-off-by: Sasha Levin

drm/sun4i: hdmi: Fix usage of TMDS clock

2019-03-05T16:58:50+00:00

[ Upstream commit 5e1bc251cebc84b41b8eb5d2434e54d939a85430 ] Although TMDS clock is required for HDMI to properly function, nobody called clk_prepare_enable(). This fixes reference counting issues and makes sure clock is running when it needs to be running. Due to TDMS clock being parent clock for DDC clock, TDMS clock was turned on/off for each EDID probe, causing spurious failures for certain HDMI/DVI screens. Fixes: 9c5681011a0c ("drm/sun4i: Add HDMI support") Signed-off-by: Priit Laes [Maxime: Moved the TMDS clock enable earlier] Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20190122073232.7240-1-plaes@plaes.org Signed-off-by: Sasha Levin

drm/sun4i: backend: add missing of_node_puts

2019-02-27T09:08:56+00:00

[ Upstream commit 4bb0e6d7258213d4893c2c876712fbba40e712fe ] The device node iterators perform an of_node_get on each iteration, so a jump out of the loop requires an of_node_put. Remote and port also have augmented reference counts, so drop them on each iteration and at the end of the function, respectively. Remote is only used for the address it contains, not for the contents of that address, so the reference count can be dropped immediately. The semantic patch that fixes the first part of this problem is as follows (http://coccinelle.lip6.fr): // @@ expression root,e; local idexpression child; iterator name for_each_child_of_node; @@ for_each_available_child_of_node(root, child) { ... when != of_node_put(child) when != e = child + of_node_put(child); ? break; ... } ... when != child // Signed-off-by: Julia Lawall Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/1547369264-24831-5-git-send-email-Julia.Lawall@lip6.fr Signed-off-by: Sasha Levin

drm/sun4i: Initialize registers in tcon-top driver

2019-02-12T18:46:57+00:00

[ Upstream commit c96d62215fb540e2ae61de44cb7caf4db50958e3 ] It turns out that TCON TOP registers in H6 SoC have non-zero reset value. This may cause issues if bits are not changed during configuration. To prevent that, initialize registers to 0. Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20181104182705.18047-24-jernej.skrabec@siol.net Signed-off-by: Sasha Levin

drm/sun4i: Fix an ulong overflow in the dotclock driver

2018-10-19T09:50:25+00:00

The calculated ideal rate can easily overflow an unsigned long, thus making the best div selection buggy as soon as no ideal match is found before the overflow occurs. Fixes: 4731a72df273 ("drm/sun4i: request exact rates to our parents") Cc: Signed-off-by: Boris Brezillon Acked-by: Maxime Ripard Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20181018100250.12565-1-boris.brezillon@bootlin.com

drm: sun4i: drop second PLL from A64 HDMI PHY

2018-09-19T07:58:40+00:00

The A64 HDMI PHY seems to be not able to use the second video PLL as clock parent in experiments. Drop the support for the second PLL from A64 HDMI PHY driver. Fixes: b46e2c9f5f64 ("drm/sun4i: Add support for A64 HDMI PHY") Signed-off-by: Icenowy Zheng Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180916043409.62374-2-icenowy@aosc.io

drm/sun4i: Remove R40 display pipeline compatibles

2018-09-10T20:01:22+00:00

Two patches from the R40 display pipeline support series weren't applied with the rest of the series. When they did get applied, the -rc6 deadline for drm-misc-next had past, so they didn't get into 4.19-rc1 with the rest of the series. However, the two patches are crucial in the parsing of the R40's display pipeline graph in the device tree. Without them, the driver crashes because it can't follow the odd graph structure. This patch removes the R40 compatibles from the sun4i-drm driver, effectively disabling DRM support for the R40 for one release cycle. This will prevent the driver from crashing upon probing. The compatibles should be reinstated for the next release. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180827083950.602-1-wens@csie.org Signed-off-by: Sean Paul

Merge tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2018-08-18T18:04:51+00:00

Pull char/misc driver updates from Greg KH: "Here is the bit set of char/misc drivers for 4.19-rc1 There is a lot here, much more than normal, seems like everyone is writing new driver subsystems these days... Anyway, major things here are: - new FSI driver subsystem, yet-another-powerpc low-level hardware bus - gnss, finally an in-kernel GPS subsystem to try to tame all of the crazy out-of-tree drivers that have been floating around for years, combined with some really hacky userspace implementations. This is only for GNSS receivers, but you have to start somewhere, and this is great to see. Other than that, there are new slimbus drivers, new coresight drivers, new fpga drivers, and loads of DT bindings for all of these and existing drivers. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits) android: binder: Rate-limit debug and userspace triggered err msgs fsi: sbefifo: Bump max command length fsi: scom: Fix NULL dereference misc: mic: SCIF Fix scif_get_new_port() error handling misc: cxl: changed asterisk position genwqe: card_base: Use true and false for boolean values misc: eeprom: assignment outside the if statement uio: potential double frees if __uio_register_device() fails eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency misc: ti-st: Fix memory leak in the error path of probe() android: binder: Show extra_buffers_size in trace firmware: vpd: Fix section enabled flag on vpd_section_destroy platform: goldfish: Retire pdev_bus goldfish: Use dedicated macros instead of manual bit shifting goldfish: Add missing includes to goldfish.h mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux dt-bindings: mux: add adi,adgs1408 Drivers: hv: vmbus: Cleanup synic memory free path Drivers: hv: vmbus: Remove use of slow_virt_to_phys() Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind() ...

BackMerge v4.18-rc7 into drm-next

2018-07-30T00:39:22+00:00

rmk requested this for armada and I think we've had a few conflicts build up. Signed-off-by: Dave Airlie

drm/sun4i: Substitute sun4i_backend_format_is_yuv() with format->is_yuv

2018-07-18T16:00:29+00:00

drm_format_info table has a field 'is_yuv' to denote if the format is yuv or not. The driver is expected to use this instead of having a function for the same purpose. Signed-off-by: Ayan Kumar halder Reviewed-by: Ville Syrjala Link: https://patchwork.freedesktop.org/patch/msgid/1531847626-22248-5-git-send-email-ayan.halder@arm.com