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linux-stable/drivers/gpu/drm
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Laurent Pinchart b4734f43f3 drm: rcar-du: Use LVDS PLL clock as dot clock when possible 
On selected SoCs, the DU can use the clock output by the LVDS encoder
PLL as its input dot clock. This feature is optional, but on the D3 and
E3 SoC it is often the only way to obtain a precise dot clock frequency,
as the other available clocks (CPG-generated clock and external clock)
usually have fixed rates.

Add a DU model information field to describe which DU channels can use
the LVDS PLL output clock as their input clock, and configure clock
routing accordingly.

This feature is available on H2, M2-W, M2-N, D3 and E3 SoCs, with D3 and
E3 being the primary targets. It is left disabled in this commit, and
will be enabled per-SoC after careful testing.

At the hardware level, clock routing is configured at runtime in two
steps, first selecting an internal dot clock between the LVDS PLL clock
and the external DOTCLKIN clock, and then selecting between the internal
dot clock and the CPG-generated clock. The first part requires stopping
the whole DU group in order for the change to take effect, thus causing
flickering on the screen. For this reason we currently hardcode the
clock source to the LVDS PLL clock if available, and allow flicker-free
selection of the external DOTCLKIN clock or CPG-generated clock
otherwise. A more dynamic clock selection process can be implemented
later if the need arises.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
2018-09-25 00:41:03 +03:00
..
amd Merge branch 'drm-next-4.20' of git://people.freedesktop.org/~agd5f/linux into drm-next 2018-09-21 09:52:53 +10:00
arc drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
arm Merge drm/drm-next into drm-misc-next 2018-08-27 10:00:03 -04:00
armada drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
ast drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
atmel-hlcdc drm/atmel-hlcdc: support bus-width (12/16/18/24) in endpoint nodes 2018-08-27 21:22:52 +02:00
bochs bochs: convert to drm_dev_register 2018-09-10 07:10:38 +02:00
bridge drm: bridge: thc63: Restrict modes based on hardware operating frequency 2018-09-25 00:40:51 +03:00
cirrus drm/cirrus: use simpler remove_conflicting_pci_framebuffers() 2018-09-03 18:16:47 +02:00
etnaviv Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into drm-next 2018-08-08 06:07:30 +10:00
exynos drm/exynos/mixer: Remove unused local variable priv 2018-07-24 16:28:53 +09:00
fsl-dcu drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
gma500 Merge drm/drm-next into drm-misc-next 2018-08-27 10:00:03 -04:00
hisilicon drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
i2c VLA leftovers pull summary: 2018-08-17 10:40:09 -07:00
i810 drm/i810: off by one in i810_dma_vertex() 2018-07-03 15:00:42 +02:00
i915 drm-misc-next for 4.20: 2018-09-20 10:15:05 +10:00
imx Merge drm/drm-next into drm-misc-next 2018-08-27 10:00:03 -04:00
lib
mediatek drm/mediatek: fix connection from RDMA2 to DSI1 2018-08-27 11:24:37 +08:00
meson drm/meson: Make DMT timings parameters and pixel clock generic 2018-07-16 11:14:59 +02:00
mga
mgag200 drm/mgag200: use simpler remove_conflicting_pci_framebuffers() 2018-09-03 18:17:32 +02:00
msm drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
mxsfb
nouveau fbdev: Drop FBINFO_CAN_FORCE_OUTPUT flag 2018-09-11 14:11:01 +02:00
omapdrm drm/omap: Don't call .set_timings() operation recursively 2018-09-03 16:13:30 +03:00
panel drm: panel-lvds: convert to SPDX identifiers 2018-09-14 13:54:02 +03:00
pl111 drm/pl111: Use 64-bit arithmetic instead of 32-bit 2018-07-17 11:25:18 -07:00
qxl qxl: refactor to use drm_fb_helper_fbdev_setup 2018-09-12 09:01:18 +02:00
r128
radeon Merge branch 'drm-next-4.20' of git://people.freedesktop.org/~agd5f/linux into drm-next 2018-09-21 09:52:53 +10:00
rcar-du drm: rcar-du: Use LVDS PLL clock as dot clock when possible 2018-09-25 00:41:03 +03:00
rockchip drm/rockchip: Allow driver to be shutdown on reboot/kexec 2018-09-10 10:52:27 +02:00
savage drm/savage: off by one in savage_bci_cmdbuf() 2018-07-04 14:27:01 +02:00
scheduler drm/scheduler: avoid redundant shifting of the entity v2 2018-08-27 11:11:14 -05:00
selftests drm-misc-next for 4.19: 2018-06-22 12:58:08 +10:00
shmobile drm: shmobile: convert to SPDX identifiers 2018-09-14 13:54:02 +03:00
sis
sti drm/sti: do not remove the drm_bridge that was never added 2018-08-07 15:33:00 +02:00
stm drm/stm: Replace drm_dev_unref with drm_dev_put 2018-07-13 10:11:02 +02:00
sun4i drm/sun4i: add support for R40 HDMI PHY 2018-09-19 10:59:21 +02:00
tdfx
tegra drm/tegra: kick out simplefb 2018-09-03 18:18:08 +02:00
tilcdc drm-misc-next for 4.19: 2018-07-20 10:46:49 +10:00
tinydrm drm/tinydrm: Replace drm_dev_unref with drm_dev_put 2018-08-07 17:09:15 +02:00
ttm drm/ttm: once more fix ttm_bo_bulk_move_lru_tail 2018-09-13 15:14:11 -05:00
tve200
udl Merge branch 'drm-udl-next' of git://people.freedesktop.org/~airlied/linux into drm-next 2018-07-31 08:24:33 +10:00
v3d drm: expand replace_fence to support timeline point v2 2018-09-06 11:09:31 +02:00
vc4 drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
vgem drm/vgem: Remove unecessary dma_fence_ops 2018-08-17 11:22:58 +02:00
via treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
virtio drm/virtio: add dma sync for dma mapped virtio gpu framebuffer pages 2018-09-19 13:33:06 +02:00
vkms drm/vkms: Add kerneldoc entry 2018-09-11 20:06:35 +02:00
vmwgfx Merge drm/drm-next into drm-misc-next 2018-08-27 10:00:03 -04:00
xen drm: Replace NULL with error value in drm_prime_pages_to_sg 2018-07-23 11:47:35 +03:00
zte drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_atomic_helper.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_atomic_uapi.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_auth.c
drm_blend.c drm: Clarify DRM_MODE_REFLECT_X/Y documentation 2018-09-11 11:21:30 +01:00
drm_bridge.c drm: bridge: document bridge attach/detach imbalance 2018-09-13 11:28:12 +02:00
drm_bufs.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_cache.c
drm_client.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_color_mgmt.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_connector.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_context.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_crtc.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_crtc_helper.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_crtc_helper_internal.h
drm_crtc_internal.h drm: refuse ADDFB2 ioctl for broken bigendian drivers 2018-09-10 07:10:36 +02:00
drm_debugfs.c drm: drop _mode_ from update_edit_property() 2018-07-13 18:40:27 +02:00
drm_debugfs_crc.c Revert "drm: crc: Wait for a frame before returning from open()" 2018-08-22 09:50:16 -07:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_cec.c drm_dp_cec: add note about good MegaChips 2900 CEC support 2018-08-31 10:20:38 +02:00
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm: add LG eDP panel to quirk database 2018-09-19 16:44:12 +03:00
drm_dp_mst_topology.c drm_dp_mst_topology: fix broken drm_dp_sideband_parse_remote_dpcd_read() 2018-08-31 10:20:38 +02:00
drm_drv.c drm: Introduce per-device driver_features 2018-09-13 18:44:06 +03:00
drm_dumb_buffers.c drm-misc-next for 4.19: 2018-06-28 13:29:07 +10:00
drm_edid.c drm/edid: Add 6 bpc quirk for SDC panel in Lenovo B50-80 2018-08-23 10:25:39 +02:00
drm_edid_load.c
drm_encoder.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_encoder_slave.c
drm_fb_cma_helper.c drm: Use horizontal and vertical chroma subsampling factor while calculating offsets in the physical address of framebuffer 2018-08-20 14:13:43 +01:00
drm_fb_helper.c drm/fb: Stop leaking physical address 2018-09-11 14:11:54 +02:00
drm_file.c drm: Begin an API for in-kernel clients 2018-07-10 14:51:37 +02:00
drm_flip_work.c
drm_fourcc.c drm: Reject unknown legacy bpp and depth for drm_mode_addfb ioctl 2018-09-06 08:07:41 +01:00
drm_framebuffer.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_gem.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_gem_cma_helper.c drm: Replace NULL with error value in drm_prime_pages_to_sg 2018-07-23 11:47:35 +03:00
drm_gem_framebuffer_helper.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_global.c drm: add SPDX identifier and clarify license 2018-06-29 15:28:47 -05:00
drm_hashtab.c treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
drm_info.c
drm_internal.h drm: Drop drmP.h from drm_connector.c 2018-09-09 14:19:17 +02:00
drm_ioc32.c
drm_ioctl.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_irq.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_kms_helper_common.c
drm_lease.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_legacy.h
drm_lock.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_memory.c treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
drm_mipi_dsi.c drm: Add support for pps and compression mode command packet 2018-07-25 07:51:05 -04:00
drm_mm.c drm/mm: Add a search-by-address variant to only inspect a single hole 2018-05-24 15:04:30 +01:00
drm_mode_config.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_mode_object.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_modes.c drm: drop _mode_ from remaining connector functions 2018-07-13 18:40:27 +02:00
drm_modeset_helper.c
drm_modeset_lock.c drm: Change deadlock-avoidance algorithm for the modeset locks. 2018-07-03 09:46:05 +02:00
drm_of.c drm/doc: Include drm_of.c helpers 2018-07-13 18:40:28 +02:00
drm_panel.c drm/panel: Fix sphinx warning 2018-08-16 11:30:02 -04:00
drm_panel_orientation_quirks.c
drm_pci.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_plane.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_plane_helper.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_prime.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_print.c drm: Add puts callback for the coredump printer 2018-07-30 08:49:41 -04:00
drm_probe_helper.c drm: drop _mode_ from remaining connector functions 2018-07-13 18:40:27 +02:00
drm_property.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_rect.c
drm_scatter.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_scdc_helper.c
drm_simple_kms_helper.c drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
drm_syncobj.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_sysfs.c
drm_trace.h
drm_trace_points.c
drm_vblank.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_vm.c gpu: drm: drm_vm: Adding new typedef vm_fault_t 2018-05-29 08:58:46 +02:00
drm_vma_manager.c drm: Remove "protection" around drm_vma_offset_manager_destroy() 2018-09-04 19:00:32 +01:00
drm_writeback.c drm: writeback: Fix doc that says connector should be disconnected 2018-07-16 16:35:27 +01:00
Kconfig drm/amdgpu: Merge amdkfd into amdgpu 2018-08-28 11:22:42 -05:00
Makefile drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00