kernel/linux.git/drivers/gpu/drm/pl111, branch v5.1.16

drm/pl111: Initialize clock spinlock early

2019-06-15T09:52:50+00:00

[ Upstream commit 3e01ae2612bdd7975c74ec7123d7f8f5e6eed795 ] The following warning is seen on systems with broken clock divider. INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 1 Comm: swapper Not tainted 5.1.0-09698-g1fb3b52 #1 Hardware name: ARM Integrator/CP (Device Tree) [] (unwind_backtrace) from [] (show_stack+0x10/0x18) [] (show_stack) from [] (dump_stack+0x18/0x24) [] (dump_stack) from [] (register_lock_class+0x674/0x6f8) [] (register_lock_class) from [] (__lock_acquire+0x68/0x2128) [] (__lock_acquire) from [] (lock_acquire+0x110/0x21c) [] (lock_acquire) from [] (_raw_spin_lock+0x34/0x48) [] (_raw_spin_lock) from [] (pl111_display_enable+0xf8/0x5fc) [] (pl111_display_enable) from [] (drm_atomic_helper_commit_modeset_enables+0x1ec/0x244) Since commit eedd6033b4c8 ("drm/pl111: Support variants with broken clock divider"), the spinlock is not initialized if the clock divider is broken. Initialize it earlier to fix the problem. Fixes: eedd6033b4c8 ("drm/pl111: Support variants with broken clock divider") Cc: Linus Walleij Signed-off-by: Guenter Roeck Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/1557758781-23586-1-git-send-email-linux@roeck-us.net Signed-off-by: Sasha Levin

drm/pl111: fix possible object reference leak

2019-05-31T13:43:37+00:00

[ Upstream commit bc29d3a69d4c1bd1a103e8b3c1ed81b807c1870b ] The call to of_find_matching_node_and_match returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: drivers/gpu/drm/pl111/pl111_versatile.c:333:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 317, but without a corresponding object release within this function. drivers/gpu/drm/pl111/pl111_versatile.c:340:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 317, but without a corresponding object release within this function. drivers/gpu/drm/pl111/pl111_versatile.c:346:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 317, but without a corresponding object release within this function. drivers/gpu/drm/pl111/pl111_versatile.c:354:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 317, but without a corresponding object release within this function. drivers/gpu/drm/pl111/pl111_versatile.c:395:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 317, but without a corresponding object release within this function. drivers/gpu/drm/pl111/pl111_versatile.c:402:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 317, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Eric Anholt (supporter:DRM DRIVER FOR ARM PL111 CLCD) Cc: David Airlie (maintainer:DRM DRIVERS) Cc: Daniel Vetter (maintainer:DRM DRIVERS) Cc: dri-devel@lists.freedesktop.org (open list:DRM DRIVERS) Cc: linux-kernel@vger.kernel.org (open list) Signed-off-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/1554307455-40361-6-git-send-email-wen.yang99@zte.com.cn Signed-off-by: Sasha Levin

drm: Split out drm_probe_helper.h

2019-01-24T12:20:42+00:00

Having the probe helper stuff (which pretty much everyone needs) in the drm_crtc_helper.h file (which atomic drivers should never need) is confusing. Split them out. To make sure I actually achieved the goal here I went through all drivers. And indeed, all atomic drivers are now free of drm_crtc_helper.h includes. v2: Make it compile. There was so much compile fail on arm drivers that I figured I'll better not include any of the acks on v1. v3: Massive rebase because i915 has lost a lot of drmP.h includes, but not all: Through drm_crtc_helper.h > drm_modeset_helper.h -> drmP.h there was still one, which this patch largely removes. Which means rolling out lots more includes all over. This will also conflict with ongoing drmP.h cleanup by others I expect. v3: Rebase on top of atomic bochs. v4: Review from Laurent for bridge/rcar/omap/shmob/core bits: - (re)move some of the added includes, use the better include files in other places (all suggested from Laurent adopted unchanged). - sort alphabetically v5: Actually try to sort them, and while at it, sort all the ones I touch. v6: Rebase onto i915 changes. v7: Rebase once more. Acked-by: Harry Wentland Acked-by: Sam Ravnborg Cc: Sam Ravnborg Cc: Jani Nikula Cc: Laurent Pinchart Acked-by: Rodrigo Vivi Acked-by: Benjamin Gaignard Acked-by: Jani Nikula Acked-by: Neil Armstrong Acked-by: Oleksandr Andrushchenko Acked-by: CK Hu Acked-by: Alex Deucher Acked-by: Sam Ravnborg Reviewed-by: Laurent Pinchart Acked-by: Liviu Dudau Signed-off-by: Daniel Vetter Cc: linux-arm-kernel@lists.infradead.org Cc: virtualization@lists.linux-foundation.org Cc: etnaviv@lists.freedesktop.org Cc: linux-samsung-soc@vger.kernel.org Cc: intel-gfx@lists.freedesktop.org Cc: linux-mediatek@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: spice-devel@lists.freedesktop.org Cc: amd-gfx@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-tegra@vger.kernel.org Cc: xen-devel@lists.xen.org Link: https://patchwork.freedesktop.org/patch/msgid/20190117210334.13234-1-daniel.vetter@ffwll.ch

drm/pl111: add of_node_put()

2018-11-28T17:31:07+00:00

of_find_node_by_path() acquires a reference to the node returned by it and that reference needs to be dropped by its caller. Signed-off-by: Yangtao Li Signed-off-by: Eric Anholt Reviewed-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20181121131723.22431-1-tiny.windzz@gmail.com

Merge drm/drm-next into drm-misc-next

2018-09-27T06:54:54+00:00

Backmerging 4.19-rc5 to pick up sun4i fix Signed-off-by: Sean Paul

drm/pl111: Use drm_fbdev_generic_setup()

2018-09-25T09:33:06+00:00

The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. Cc: Eric Anholt Signed-off-by: Noralf Trønnes Acked-by: Sam Ravnborg Acked-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20180908134648.2582-13-noralf@tronnes.org

drm/pl111: Make sure of_device_id tables are NULL terminated

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

We prefer to of_device_id tables are NULL terminated. So make vexpress_muxfpga_match is NULL terminated. Signed-off-by: zhong jiang Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/1533379767-15629-1-git-send-email-zhongjiang@huawei.com Signed-off-by: Sean Paul

drm/pl111: Use 64-bit arithmetic instead of 32-bit

2018-07-17T18:25:18+00:00

Add suffix ULL to constant 1000 in order to give the compiler complete information about the proper arithmetic to use. Notice that such constant is used in a context that expects an expression of type u64 (64 bits, unsigned) and the following expression is currently being evaluated using 32-bit arithmetic: mode->clock * 1000 Addresses-Coverity-ID: 1466139 ("Unintentional integer overflow") Signed-off-by: Gustavo A. R. Silva Signed-off-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20180704142255.GA8614@embeddedor.com

drm/pl111: Replace drm_dev_unref with drm_dev_put

2018-07-17T18:24:44+00:00

This patch unifies the naming of DRM functions for reference counting of struct drm_device. The resulting code is more aligned with the rest of the Linux kernel interfaces. Signed-off-by: Thomas Zimmermann Signed-off-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20180717083657.16262-1-tzimmermann@suse.de

drm/pl111: Set .gem_prime_vmap and .gem_prime_mmap

2018-07-10T12:52:54+00:00

These are needed for pl111 to use the generic fbdev emulation. Cc: Eric Anholt Signed-off-by: Noralf Trønnes Reviewed-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20180703160354.59955-4-noralf@tronnes.org