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3b45eee87da171caa28f61240ddb5c21170cda53
linux/drivers/gpu/drm
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Dave Stevenson 3b45eee87d drm/vc4: dsi: Correct DSI divider calculations 
The divider calculations tried to find the divider just faster than the
clock requested. However if it required a divider of 7 then the for loop
aborted without handling the "error" case, and could end up with a clock
lower than requested.

The integer divider from parent PLL to DSI clock is also capable of
going up to /255, not just /7 that the driver was trying.  This allows
for slower link frequencies on the DSI bus where the resolution permits.

Correct the loop so that we always have a clock greater than requested,
and covering the whole range of dividers.

Fixes: 86c1b9eff3 ("drm/vc4: Adjust modes in DSI to work around the integer PLL divider.")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20220613144800.326124-13-maxime@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-06-28 14:55:26 +02:00
..
amd
drm/amdgpu/display: drop set but unused variable
2022-06-20 18:18:49 -04:00
arm
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
armada
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
aspeed
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
ast
drm/ast: Enable primary plane with CRTC
2022-06-27 11:10:43 +02:00
atmel-hlcdc
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
bridge
drm: bridge: adv7511: Add check for mipi_dsi_driver_register
2022-06-24 22:32:02 +02:00
display
drm/display: Fix build error without CONFIG_OF
2022-06-23 16:18:02 +02:00
etnaviv
Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into drm-next
2022-05-17 12:20:04 +10:00
exynos
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
fsl-dcu
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
gma500
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
gud
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
hisilicon
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
hyperv
drm/hyperv-drm: Include framebuffer and EDID headers
2022-06-22 16:07:38 +02:00
i2c
…
i810
…
i915
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
imx
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
ingenic
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
kmb
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
lib
…
lima
…
logicvc
drm/logicvc: add missing of_node_put() in logicvc_layers_init()
2022-06-24 17:23:38 +02:00
mcde
drm/mcde: Fix refcount leak in mcde_dsi_bind
2022-06-27 09:58:41 +02:00
mediatek
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
meson
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
mga
…
mgag200
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
msm
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
mxsfb
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
nouveau
drm/nouveau/Kconfig: Drop duplicate "select ACPI_VIDEO"
2022-06-23 12:15:04 +02:00
omapdrm
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
panel
drm/panel: introduce ebbg,ft8719 panel
2022-06-24 22:35:38 +02:00
panfrost
Merge tag 'drm-misc-next-2022-06-08' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
2022-06-15 19:12:17 +02:00
pl111
drm/pl111: drop unexpected word "the" in the comments
2022-06-24 21:32:40 +02:00
qxl
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
r128
drm/r128: Fix undefined behavior due to shift overflowing the constant
2022-05-21 18:02:47 +02:00
radeon
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
rcar-du
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
rockchip
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
savage
…
scheduler
drm/scheduler: Don't kill jobs in interrupt context
2022-05-17 10:06:41 -04:00
selftests
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
shmobile
drm: shmobile: Use backlight helper
2022-06-24 21:45:28 +02:00
sis
…
solomon
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
sprd
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
sti
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
stm
drm/stm: ltdc: update hardware error management
2022-06-27 16:01:50 +02:00
sun4i
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
tdfx
…
tegra
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
tests
drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_rgb332()
2022-06-27 13:45:53 +02:00
tidss
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
tilcdc
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
tiny
drm: Implement DRM aperture helpers under video/
2022-06-27 11:07:55 +02:00
ttm
Merge tag 'drm-misc-next-2022-06-08' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
2022-06-15 19:12:17 +02:00
tve200
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
udl
drm: Drop drm_edid.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
v3d
drm/v3d: Add support for bcm2711
2022-06-12 22:10:50 -01:00
vboxvideo
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
vc4
drm/vc4: dsi: Correct DSI divider calculations
2022-06-28 14:55:26 +02:00
vgem
…
via
…
virtio
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
vkms
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
vmwgfx
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
xen
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
xlnx
drm/xlnx: Fix build failure due to missing include
2022-06-21 11:23:52 +03:00
drm_agpsupport.c
…
drm_aperture.c
drm: Implement DRM aperture helpers under video/
2022-06-27 11:07:55 +02:00
drm_atomic_helper.c
drm/atomic-helper: Add helper drm_atomic_helper_check_crtc_state()
2022-06-27 11:10:43 +02:00
drm_atomic_state_helper.c
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_atomic_uapi.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_atomic.c
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_auth.c
…
drm_blend.c
drm/doc: Fix comment typo
2022-06-28 07:56:32 +02:00
drm_bridge_connector.c
drm: Config orientation property if panel provides it
2022-06-21 08:52:59 -07:00
drm_bridge.c
drm/bridge: Add devm_drm_bridge_add()
2022-06-02 15:15:10 -07:00
drm_buddy.c
…
drm_bufs.c
…
drm_cache.c
…
drm_client_modeset.c
drm: Drop drm_edid.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_client.c
…
drm_color_mgmt.c
drm: fix typo in comment
2022-05-04 14:09:34 +02:00
drm_connector.c
drm/connector: Remove usage of the deprecated ida_simple_xxx API
2022-06-25 00:04:19 +02:00
drm_context.c
…
drm_crtc_helper_internal.h
…
drm_crtc_helper.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_crtc_internal.h
…
drm_crtc.c
drm: Drop drm_blend.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_damage_helper.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_debugfs_crc.c
…
drm_debugfs.c
drm/debug: Expose connector's max supported bpc via debugfs
2022-05-23 11:27:36 +03:00
drm_displayid.c
drm/displayid: convert to drm_edid
2022-05-13 18:55:13 +03:00
drm_dma.c
…
drm_drv.c
…
drm_dumb_buffers.c
…
drm_edid_load.c
…
drm_edid.c
drm/edid: add new interfaces around struct drm_edid
2022-06-13 12:30:54 +03:00
drm_encoder_slave.c
…
drm_encoder.c
drm: use ENOMEM for drmm_kzalloc allocation failures
2022-05-25 17:39:49 +02:00
drm_fb_cma_helper.c
…
drm_fb_helper.c
drm/fb-helper: Fix out-of-bounds access
2022-06-27 11:10:43 +02:00
drm_file.c
…
drm_flip_work.c
…
drm_format_helper.c
drm/format-helper: Share implementation among conversion helpers
2022-05-05 08:54:09 +02:00
drm_fourcc.c
…
drm_framebuffer.c
…
drm_gem_atomic_helper.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_gem_cma_helper.c
drm/cma-helper: Describe what a "contiguous chunk" actually means
2022-06-08 17:36:15 +02:00
drm_gem_framebuffer_helper.c
drm/gem: Warn on trying to use a non-existing framebuffer plane
2022-05-19 19:25:23 +02:00
drm_gem_shmem_helper.c
…
drm_gem_ttm_helper.c
…
drm_gem_vram_helper.c
drm/gem-vram: Ignore planes that are unused by framebuffer format
2022-05-19 19:25:19 +02:00
drm_gem.c
…
drm_hashtab.c
…
drm_internal.h
…
drm_ioc32.c
…
drm_ioctl.c
GPU: drm: drop unexpected word "the" in the comments
2022-06-22 09:23:08 +02:00
drm_irq.c
…
drm_kms_helper_common.c
drm: Drop drm_edid.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_lease.c
…
drm_legacy_misc.c
…
drm_legacy.h
…
drm_lock.c
…
drm_managed.c
drm: Add DRM-managed mutex_init()
2022-05-05 09:04:10 +02:00
drm_memory.c
…
drm_mipi_dbi.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_mipi_dsi.c
…
drm_mm.c
…
drm_mode_config.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_mode_object.c
…
drm_modes.c
drm: Drop drm_edid.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_modeset_helper.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
drm_modeset_lock.c
…
drm_nomodeset.c
…
drm_of.c
drm: of: Add drm_of_get_data_lanes_count and drm_of_get_data_lanes_ep
2022-06-12 12:22:22 +02:00
drm_panel_orientation_quirks.c
drm: panel-orientation-quirks: drop unexpected word "the" in the comments
2022-06-22 09:23:01 +02:00
drm_panel.c
…
drm_pci.c
…
drm_plane_helper.c
…
drm_plane.c
…
drm_prime.c
drm/prime: drop unexpected word "the" in the comments
2022-06-22 09:22:05 +02:00
drm_print.c
…
drm_privacy_screen_x86.c
…
drm_privacy_screen.c
…
drm_probe_helper.c
drm/probe-helper: abstract .get_modes() connector helper call
2022-06-13 12:31:27 +03:00
drm_property.c
…
drm_rect.c
…
drm_scatter.c
…
drm_self_refresh_helper.c
…
drm_simple_kms_helper.c
drm/simple-kms: Use drm_atomic_helper_check_crtc_state()
2022-06-27 11:10:43 +02:00
drm_syncobj.c
drm/syncobj: add missing error return code in drm_syncobj_transfer_to_timeline()
2022-06-13 08:54:16 +02:00
drm_sysfs.c
…
drm_trace_points.c
…
drm_trace.h
…
drm_vblank_work.c
…
drm_vblank.c
…
drm_vm.c
LoongArch: Add writecombine support for drm
2022-06-03 20:09:27 +08:00
drm_vma_manager.c
…
drm_writeback.c
drm: Drop drm_framebuffer.h from drm_crtc.h
2022-06-20 23:53:55 +03:00
Kconfig
drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_rgb332()
2022-06-27 13:45:53 +02:00
Makefile
drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_rgb332()
2022-06-27 13:45:53 +02:00