kernel/drivers/gpu/drm/pl111/pl111_drm.h, branch linux-4.17.y

drm/pl111: Use max memory bandwidth for resolution

2018-03-07T22:14:24Z

We were previously selecting 1024x768 and 32BPP as the default set-up for the PL111 consumers. This does not work on elder systems: the device tree bindings support a property "max-memory-bandwidth" in bytes/second that states that if you exceed this the memory bus will saturate. The result is flickering and unstable images. Parse the "max-memory-bandwidth" and respect it when intializing the driver. On the RealView PB11MP, Versatile and Integrator/CP we get a nice console as default with this code. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180307215819.15814-1-linus.walleij@linaro.org

drm/pl111: Make the default BPP a per-variant variable

2018-03-07T21:46:46Z

The PL110, Integrator and Versatile boards strongly prefer to use 16 BPP even if other modes are supported, both to keep down memory consumption and also to easier find a good match to supported resolutions with consideration taken to the memory bandwidth of the platforms. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180302090948.6399-2-linus.walleij@linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20180307084316.23623-1-linus.walleij@linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20180307084316.23623-1-linus.walleij@linaro.org

drm/pl111: Do not use deprecated drm_driver.{enable|disable)_vblank

2018-02-22T16:58:59Z

Do not use deprecated drm_driver.{enable|disable)_vblank callbacks, but use drm_simple_kms_helpe's pipe callbacks instead. Signed-off-by: Oleksandr Andrushchenko Cc: Eric Anholt Reviewed-by: Eric Anholt Tested-by: Eric Anholt Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/1518425574-32671-5-git-send-email-andr2000@gmail.com

drm/pl111: Support variants with broken VBLANK

2018-02-07T08:08:46Z

The early Integrator CLCD synthesized in the Integrator CP and IM-PD1 FPGAs are broken: their vertical and next base interrupts are not functional. Support these variants by simply disabling the use of the vblank interrupt on these variants. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180206093540.8147-4-linus.walleij@linaro.org

drm/pl111: Support variants with broken clock divider

2018-02-07T08:08:40Z

The early Integrator CLCD synthesized in the Integrator CP and IM-PD1 FPGAs are broken: their clock dividers do not work properly. Support disabling the clock divider and drive the clock directly from the parent under these circumstances. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180206093540.8147-3-linus.walleij@linaro.org

drm/pl111: Properly detect the ARM PL110 variants

2018-02-07T08:08:23Z

With a bit of refactoring we can contain the variant data for the strange PL110 versions that is feature-incomplete PL110 for the ARM Integrator/CP and somewhere inbetween PL110 and PL111 for the ARM Versatile AB and Versatile PB. We also accomodate for the custom duct-taped RGB565/BGR565 support in the Versatile variant. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180206093540.8147-1-linus.walleij@linaro.org

drm/pl111: Use drm_fb_cma_fbdev_init/fini()

2017-12-08T13:47:41Z

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on the fact that drm_device holds a pointer to the drm_fb_helper structure. This means that the driver doesn't have to keep track of that. Also use the drm_fb_helper functions directly. Cc: Eric Anholt Signed-off-by: Noralf Trønnes Reviewed-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20171115142001.45358-11-noralf@tronnes.org

drm/pl111: Add optional variant display en/disable callbacks

2017-09-10T21:58:35Z

The silcon and components around the PL111 may require some variants to perform special set-up of the display. Add two callbacks to manage this. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20170908124709.4758-6-linus.walleij@linaro.org

drm/pl111: Enable PL110 variant

2017-09-10T21:58:16Z

We detect and enable the use of the PL110 variant, an earlier incarnation of PL111. The only real difference is that the control and interrupt enable registers have swapped place. The Versatile AB and Versatile PB have a variant inbetween PL110 and PL111, it is PL110 but they have already swapped the two registers so those two need a bit of special handling. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20170908124709.4758-4-linus.walleij@linaro.org

drm/pl111: Replace custom connector with panel bridge

2017-09-10T21:58:02Z

This replaces the custom connector in the PL111 with the panel bridge helper. This works nicely for all standard panels, but since there are several PL11x-based systems that will need to use the dumb VGA connector bridge we use drm_of_find_panel_or_bridge() and make some headroom for dealing with bridges that are not panels as well, and drop a TODO in the code. Reviewed-by: Eric Anholt Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20170908124709.4758-3-linus.walleij@linaro.org