Laurent Pinchart b0e583e5b6 drm: bridge: dw-hdmi: Fix the PHY power down sequence ... The PHY requires us to wait for the PHY to switch to low power mode after deasserting TXPWRON and before asserting PDDQ in the power down sequence, otherwise power down will fail. The PHY power down can be monitored though the TX_READY bit, available through I2C in the PHY registers, or the TX_PHY_LOCK bit, available through the HDMI TX registers. As the two are equivalent, let's pick the easier solution of polling the TX_PHY_LOCK bit. The power down code is currently duplicated in multiple places. To avoid spreading multiple calls to a TX_PHY_LOCK poll function, we have to refactor the power down code and group it all in a single function. Tests showed that one poll iteration was enough for TX_PHY_LOCK to become low, without requiring any additional delay. Retrying the read five times with a 1ms to 2ms delay between each attempt should thus be more than enough. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/20170305233539.11898-1-laurent.pinchart+renesas@ideasonboard.com		2017-03-10 14:24:50 +05:30
..
amd	Merge airlied/drm-next into drm-misc-next	2017-02-26 21:34:42 +01:00
arc	drm: remove drm_vblank_no_hw_counter assignment from driver code	2017-02-07 21:43:55 +01:00
arm	drm: Constify drm_mode_config atomic helper private pointer	2017-02-12 12:05:23 +01:00
armada	drm/armada: Remove armada_drm_debugfs_cleanup()	2017-03-01 16:09:51 +01:00
ast	Merge airlied/drm-next into drm-misc-next	2017-02-26 21:34:42 +01:00
atmel-hlcdc	drm/atmel-hlcdc: Simplify the HLCDC layer logic	2017-02-28 11:57:56 +01:00
bochs	drm/fb-helper: Automatically clean up fb_info	2017-02-07 21:36:28 +01:00
bridge	drm: bridge: dw-hdmi: Fix the PHY power down sequence	2017-03-10 14:24:50 +05:30
cirrus	drm/fb-helper: Automatically clean up fb_info	2017-02-07 21:36:28 +01:00
etnaviv	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
exynos	Merge airlied/drm-next into drm-misc-next	2017-02-26 21:34:42 +01:00
fsl-dcu	Merge airlied/drm-next into drm-misc-next	2017-02-26 21:34:42 +01:00
gma500	gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level>	2017-03-01 09:44:11 +01:00
hisilicon	drm: kirin: use vblank hooks in struct drm_crtc_funcs	2017-02-21 11:17:45 -05:00
i2c
i810	drm/i810: drop device_is_agp callback	2017-01-26 10:44:43 +01:00
i915	Revert "drm/i915: Implement Link Rate fallback on Link training failure"	2017-03-02 09:17:16 +01:00
imx	Merge airlied/drm-next into drm-misc-next	2017-02-26 21:34:42 +01:00
lib
mediatek	drm: mediatek: use vblank hooks in struct drm_crtc_funcs	2017-02-21 11:17:54 -05:00
meson	drm: meson: use vblank hooks in struct drm_crtc_funcs	2017-02-09 16:08:09 +08:00
mga	drm/mga: remove device_is_agp callback	2017-01-26 10:45:03 +01:00
mgag200	gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level>	2017-03-01 09:44:11 +01:00
msm	drm/msm: Remove msm_debugfs_cleanup()	2017-03-08 11:24:45 +01:00
mxsfb	drm: remove drm_vblank_no_hw_counter assignment from driver code	2017-02-07 21:43:55 +01:00
nouveau	drm/nouveau: Remove nouveau_drm_debugfs_cleanup()	2017-03-01 16:09:52 +01:00
omapdrm	gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level>	2017-03-01 09:44:11 +01:00
panel	drm/panel: simple: Specify bus width and flags for EDT displays	2017-01-26 10:57:18 +01:00
qxl	drm/qxl: Remove qxl_debugfs_remove_files()	2017-03-09 09:01:00 +01:00
r128	gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level>	2017-03-01 09:44:11 +01:00
radeon	Merge airlied/drm-next into drm-misc-next	2017-02-26 21:34:42 +01:00
rcar-du	drm: rcar-du: use vblank hooks in struct drm_crtc_funcs	2017-02-09 16:08:44 +08:00
rockchip	drm/rockchip: Fix link error when CONFIG_DRM_ANALOGIX_DP undefined	2017-03-06 18:18:03 -05:00
savage
selftests	drm: kselftest: fix spelling mistake: "misalinged" -> "misaligned"	2017-02-26 22:54:47 +01:00
shmobile	drm: shmobile: use vblank hooks in struct drm_crtc_funcs	2017-02-09 16:10:16 +08:00
sis	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
sti	drm: sti: make driver use devm_of_platform_populate()	2017-02-27 17:20:29 +01:00
sun4i	drm: sun4i: use vblank hooks in struct drm_crtc_funcs	2017-02-09 16:10:52 +08:00
tdfx
tegra	drm: tegra: use vblank hooks in struct drm_crtc_funcs	2017-02-09 16:11:31 +08:00
tilcdc	drm: tilcdc: use vblank hooks in struct drm_crtc_funcs	2017-02-09 16:12:01 +08:00
tinydrm	drm/tinydrm: fix semicolon.cocci warnings	2017-02-26 22:55:41 +01:00
ttm	gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level>	2017-03-01 09:44:11 +01:00
udl	drm/fb-helper: Automatically clean up fb_info	2017-02-07 21:36:28 +01:00
vc4	drm/vc4: Fix OOPSes from trying to cache a partially constructed BO.	2017-03-02 09:57:23 -08:00
vgem	drm/vgem: Switch to reservation_object_lock() helpers	2017-01-24 11:00:23 +01:00
via	drm/via: use get_user_pages_unlocked()	2017-02-28 10:00:50 +01:00
virtio	drm: virtio: use kmem_cache	2017-03-07 07:09:18 +01:00
vmwgfx	gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level>	2017-03-01 09:44:11 +01:00
zte	drm: zte: use vblank hooks in struct drm_crtc_funcs	2017-02-09 16:13:20 +08:00
ati_pcigart.c
drm_agpsupport.c	drm/i810: drop device_is_agp callback	2017-01-26 10:44:43 +01:00
drm_atomic_helper.c	drm/atomic: Convert get_existing_state callers to get_old/new_state, v4.	2017-03-06 11:43:05 +01:00
drm_atomic.c	drm/atomic: Convert get_existing_state callers to get_old/new_state, v4.	2017-03-06 11:43:05 +01:00
drm_auth.c	drm/core: Use recommened kerneldoc for struct member refs	2017-01-25 16:22:42 +01:00
drm_blend.c	drm/blend: Use new atomic iterator macros.	2017-03-06 11:43:43 +01:00
drm_bridge.c
drm_bufs.c
drm_cache.c	gpu: drm: core: Convert printk(KERN_<LEVEL> to pr_<level>	2017-02-28 14:32:19 +01:00
drm_color_mgmt.c	drm/color: un-inline drm_color_lut_extract()	2017-01-31 15:31:58 +02:00
drm_connector.c	drm: Rename connector list iterator API	2017-02-28 16:16:48 +01:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c	drm: Rename connector list iterator API	2017-02-28 16:16:48 +01:00
drm_crtc_internal.h	drm: Rename drm_mode_object_get()	2017-02-28 16:14:53 +01:00
drm_crtc.c	drm: Introduce drm_framebuffer_{get,put}()	2017-02-28 16:15:03 +01:00
drm_debugfs_crc.c
drm_debugfs.c	drm/debugfs: Remove the drm_driver.debugfs_cleanup callback	2017-03-08 11:29:08 +01:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_dual_mode_helper.c	drm: Add name for DRM_DP_DUAL_MODE_LSPCON	2017-02-23 11:06:12 -05:00
drm_dp_helper.c	drm/dp: Add missing description to parameter	2017-03-07 16:38:16 -05:00
drm_dp_mst_topology.c	drm/dp: Store drm_device in MST topology manager	2017-01-25 06:01:48 +01:00
drm_drv.c	Linux 4.10-rc8	2017-02-23 12:10:12 +10:00
drm_dumb_buffers.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_edid_load.c	drm: move edid property update and add modes out of edid firmware loader	2017-02-21 15:41:24 +02:00
drm_edid.c	gpu: drm: core: Convert printk(KERN_<LEVEL> to pr_<level>	2017-02-28 14:32:19 +01:00
drm_encoder_slave.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_encoder.c	drm: Rename connector list iterator API	2017-02-28 16:16:48 +01:00
drm_fb_cma_helper.c	drm: Update drm_fbdev_cma_init documentation	2017-03-01 23:52:35 +01:00
drm_fb_helper.c	drm/fb-helper: implement ioctl FBIO_WAITFORVSYNC	2017-03-02 08:12:15 +01:00
drm_file.c	drm: Extract drm_file.h	2017-03-09 16:18:02 +01:00
drm_flip_work.c
drm_fourcc.c
drm_framebuffer.c	drm: Introduce drm_framebuffer_{get,put}()	2017-02-28 16:15:03 +01:00
drm_gem_cma_helper.c	drm: Introduce drm_gem_object_{get,put}()	2017-02-28 16:16:43 +01:00
drm_gem.c	drm: Introduce drm_gem_object_{get,put}()	2017-02-28 16:16:43 +01:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h	drm: rename drm_fops.c to drm_file.c	2017-03-09 16:18:02 +01:00
drm_ioc32.c	gpu: drm: core: Convert printk(KERN_<LEVEL> to pr_<level>	2017-02-28 14:32:19 +01:00
drm_ioctl.c
drm_irq.c	drm: unexport function drm_vblank_no_hw_counter()	2017-02-07 21:45:02 +01:00
drm_kms_helper_common.c	drm: Remove drmP.h include from drm_kms_helper_common.c	2017-03-09 16:18:02 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c
drm_mm.c	drm: Micro-optimise drm_mm_for_each_node_in_range()	2017-02-06 16:57:37 +01:00
drm_mode_config.c	drm: Rename connector list iterator API	2017-02-28 16:16:48 +01:00
drm_mode_object.c	drm: Introduce drm_mode_object_{get,put}()	2017-02-28 16:14:55 +01:00
drm_modes.c	drm: Rename drm_mode_object_get()	2017-02-28 16:14:53 +01:00
drm_modeset_helper.c
drm_modeset_lock.c	drm/kms-core: Use recommened kerneldoc for struct member refs	2017-01-25 16:30:34 +01:00
drm_of.c
drm_panel.c
drm_pci.c	drm: Extract drm_pci.h	2017-03-09 16:18:02 +01:00
drm_plane_helper.c	drm/atomic: Make drm_atomic_plane_disabling easier to understand.	2017-03-06 11:41:55 +01:00
drm_plane.c	drm: Introduce drm_framebuffer_{get,put}()	2017-02-28 16:15:03 +01:00
drm_platform.c	drm/core: Use recommened kerneldoc for struct member refs	2017-01-25 16:22:42 +01:00
drm_prime.c	drm: Extract drm_prime.h	2017-03-09 16:18:02 +01:00
drm_print.c	drm: drm_printer: add __printf validation	2017-02-26 21:43:08 +01:00
drm_probe_helper.c	drm: Rename connector list iterator API	2017-02-28 16:16:48 +01:00
drm_property.c	drm: Introduce drm_property_blob_{get,put}()	2017-02-28 16:16:46 +01:00
drm_rect.c
drm_scatter.c
drm_simple_kms_helper.c	drm/atomic: Convert get_existing_state callers to get_old/new_state, v4.	2017-03-06 11:43:05 +01:00
drm_sysfs.c	drm/core: Use recommened kerneldoc for struct member refs	2017-01-25 16:22:42 +01:00
drm_trace_points.c
drm_trace.h
drm_vm.c
drm_vma_manager.c	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
Kconfig	drm/fb-helper: Add multi buffer support for cma fbdev	2017-02-26 22:11:37 +01:00
Makefile	drm: rename drm_fops.c to drm_file.c	2017-03-09 16:18:02 +01:00