kernel/linux.git/drivers/gpu/drm/pl111, branch linux-4.20.y

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

drm/pl111: Support Nomadik LCDC variant

2018-07-01T19:36:47+00:00

The Nomadik has a variant of the PL110 known as "Color LCD Controller" LCDC. This variant has the same bit ordering as the DRM subsystem (in difference from the other variants) and adds a few bits for the control of 5551, 565 etc in the control register. Notably it also adds a packed RGB888 24BPP mode. We add support by detecting this variant and also adding a small plug-in that will mux the LCDC out if the ASIC happens to be muxed to the other graphics controller (they are mutually exclusive). Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180621184450.25377-1-linus.walleij@linaro.org

drm/pl111: Fix module probe bug

2018-05-03T22:13:41+00:00

Commit a30933c27602 ("drm/pl111: Support the Versatile Express") Added a second module using the builtin_platform_driver() call, which works fine as long as you do not try to build the PL111 driver as a module, because a module can only have one initcall and cause the following build bug: (...) multiple definition of `init_module' (...) Reported-by: Daniel Vetter Cc: Liviu Dudau Cc: Pawel Moll Cc: Eric Anholt Cc: Robin Murphy Reviewed-by: Sean Paul Reviewed-by: Daniel Vetter Fixes: a30933c27602 ("drm/pl111: Support the Versatile Express") Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180503140431.5798-1-linus.walleij@linaro.org

drm/pl111: Enable device-specific assigned memory

2018-05-02T17:13:42+00:00

The Versatile Express has 8 MB of dedicated video RAM (VRAM) on the motherboard, which is what we should be using for the PL111 if available. On this platform, the memory backplane is constructed so that only this memory will work properly with the CLCD on the motherboard, using any other memory area just gives random snow on the display. The CA9 Versatile Express also has a PL111 instance on its core tile that can address all memory, and this does not have the restriction. The memory is assigned to the device using the memory-region device tree property and a "shared-dma-pool" reserved memory pool like this: reserved-memory { #address-cells = <1>; #size-cells = <1>; ranges; vram: vram@48000000 { compatible = "shared-dma-pool"; reg = <0x48000000 0x00800000>; no-map; }; }; clcd@1f000 { compatible = "arm,pl111", "arm,primecell"; (...) memory-region = <&vram>; }·; Cc: Liviu Dudau Cc: Mali DP Maintainers Reviewed-by: Eric Anholt Tested-by: Robin Murphy Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180502134719.8388-2-linus.walleij@linaro.org

drm/pl111: Support the Versatile Express

2018-05-02T17:13:28+00:00

The Versatile Express uses a special configuration controller deeply embedded in the system motherboard FPGA to multiplex the two to three (!) display controller instances out to the single SiI9022 bridge. Set up an extra file with the logic to probe to the FPGA mux register on the system controller bus, then parse the device tree to see if there is a CLCD or HDLCD instance on the core tile (also known as the daughterboard) by looking in the root of the device tree for compatible nodes. - If there is a HDLCD on the core tile, and there is a driver for it, we exit probe and deactivate the motherboard CLCD. We do not touch the DVI mux in this case, to make sure we don't break HDLCD. - If there is a CLCD on both the motherboard and the core tile (only the CA9 has this) the core tile CLCD takes precedence and get muxed to the DVI connector. - Only if there is no working graphics on the core tile, the motherboard CLCD is probed and muxed to the DVI connector. Core tile graphics should always take precedence as it can address all memory and is also faster, however the motherboard CLCD is good to have around for diagnostics and testing. It is possible to test the motherboard CLCD by setting the status = "disabled" property on the core tile CLCD or HDLCD. Scale down the Versatile Express to 16BPP so we can support a 1024x768 display despite the bus bandwidth restrictions on this platform. (The motherboard CLCD supports slightly lower resolution.) Cc: Liviu Dudau Cc: Pawel Moll Acked-by: Eric Anholt Tested-by: Robin Murphy Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180502134719.8388-1-linus.walleij@linaro.org