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3d19306a82
linux/drivers/gpu/drm
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Darren Etheridge 3d19306a82 drm/tilcdc: rewrite pixel clock calculation 
Updating the tilcdc DRM driver code to calculate the LCD controller
pixel clock more accurately. Based on a suggested implementation by
Tomi Valkeinen.

The current code does not work correctly and produces wrong results
with many requested clock rates. It also oddly uses two different
clocks, a display pll clock and a divider clock (child of display
pll), instead of just using the clock coming to the lcdc.

This patch removes the use of the display pll clock, and rewrites the
code to calculate the clock rates. The idea is simply to request a
clock rate of pixelclock*2, as the LCD controller has an internal
divider which we set to 2.

Signed-off-by: Darren Etheridge <detheridge@ti.com>
[Rewrapped description]
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-02-25 16:39:28 +02:00
..
amd Merge branch 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-02-19 11:13:01 +10:00
arm drm: Add support for ARM's HDLCD controller. 2016-02-10 13:44:16 +00:00
armada drm/armada: Remove NULL open/pre/postclose hooks 2016-01-25 19:35:05 +01:00
ast drm/ast: removed optional dummy encoder mode_fixup function. 2016-02-16 15:32:15 +01:00
atmel-hlcdc drm/atmel: Nuke preclose 2016-02-08 09:55:48 +01:00
bochs drm/bochs: removed optional dummy encoder mode_fixup function. 2016-02-16 15:32:19 +01:00
bridge drm/bridge: removed dummy mode_fixup function from dw-hdmi. 2016-02-11 09:24:01 +01:00
cirrus drm/cirrus: removed optional dummy encoder mode_fixup function. 2016-02-16 15:32:24 +01:00
etnaviv drm/etnaviv: call correct function when trying to vmap a DMABUF 2016-01-26 18:54:01 +01:00
exynos drm/exynos: removed optional dummy encoder mode_fixup function. 2016-02-16 15:30:36 +01:00
fsl-dcu drm/fsl: Remove preclose hook 2016-01-25 19:35:04 +01:00
gma500 drm/gma500: removed optional dummy encoder mode_fixup function. 2016-02-16 15:32:43 +01:00
i2c drm/i2c/tda998x: removed unnecessary code, mode_fixup is now optional. 2016-02-11 09:24:01 +01:00
i810
i915 drm/i915: Set aux.dev to the drm_connector device, instead of drm_device. 2016-02-14 19:21:01 +01:00
imx drm/imx: removed optional dummy encoder mode_fixup function. 2016-02-16 15:33:05 +01:00
mga
mgag200 drm/mgag200: removed optional dummy encoder mode_fixup function. 2016-02-16 15:33:26 +01:00
msm Merge tag 'topic/drm-misc-2016-02-18' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-02-19 10:57:44 +10:00
nouveau drm/nouveau: Defer probe if gmux is present but its driver isn't 2016-02-09 11:21:12 +01:00
omapdrm dma-buf: Remove range-based flush 2016-02-09 09:25:22 +01:00
panel drm/panel: simple: Add QiaoDian qd43003c0-40 2015-12-16 18:15:26 +01:00
qxl drm/qxl: removed optional dummy encoder mode_fixup function. 2016-02-16 15:34:00 +01:00
r128
radeon Merge branch 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-02-19 11:13:01 +10:00
rcar-du drm: rcar-du: Add tri-planar memory formats support 2016-02-23 09:34:33 +02:00
rockchip Merge branch 'drm-rockchip-next-2016-02-18' of https://github.com/markyzq/kernel-drm-rockchip into drm-next 2016-02-19 13:10:18 +10:00
savage
shmobile Merge tag 'topic/drm-misc-2016-02-08' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-02-09 10:39:11 +10:00
sis
sti drm/sti: removed optional dummy encoder mode_fixup function. 2016-02-16 15:34:24 +01:00
tdfx
tegra drm/tegra: drop unused variable. 2016-02-09 11:17:37 +10:00
tilcdc drm/tilcdc: rewrite pixel clock calculation 2016-02-25 16:39:28 +02:00
ttm Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-01-17 13:40:25 -08:00
udl drm/udl: Use module_usb_driver 2016-02-17 14:19:30 +01:00
vc4 drm/vc4: Add support for YUV planes. 2016-02-16 11:24:08 -08:00
vgem
via
virtio Merge tag 'topic/drm-misc-2016-02-18' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-02-19 10:57:44 +10:00
vmwgfx Merge tag 'topic/drm-misc-2016-02-08' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-02-09 10:39:11 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c drm/atomic: Add encoder_mask to crtc_state, v3. 2016-02-09 11:21:06 +01:00
drm_atomic.c drm: Add functions to setup/tear down drm_events. 2016-01-25 08:40:09 +01:00
drm_auth.c
drm_bridge.c drm/bridge: Improve kerneldoc 2015-12-08 16:07:53 +01:00
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc_helper.c drm: fixes crct set_mode when crtc mode_fixup is null. 2016-02-16 15:36:49 +01:00
drm_crtc_internal.h
drm_crtc.c drm: Add drm_format_plane_width() and drm_format_plane_height() 2016-02-09 16:34:58 +01:00
drm_debugfs.c
drm_dma.c
drm_dp_aux_dev.c drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers. 2016-02-12 14:22:40 +01:00
drm_dp_helper.c drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers. 2016-02-12 14:22:40 +01:00
drm_dp_mst_topology.c drm/dp/mst: deallocate payload on port destruction 2016-02-05 15:23:49 +10:00
drm_drv.c drm: move MODULE_PARM_DESC to other file 2016-01-08 15:32:29 +01:00
drm_edid_load.c
drm_edid.c drm/edid: Switch DDC when reading the EDID 2016-02-09 11:21:09 +01:00
drm_encoder_slave.c drm: fixes when i2c encoder slave mode_fixup is null. 2016-02-10 15:14:49 +01:00
drm_fb_cma_helper.c drm/fb_cma_helper: remove duplicate const from drm_fb_cma_alloc 2016-01-20 13:55:57 +01:00
drm_fb_helper.c drm/fb_helper: Use add_one_connector in add_all_connectors. 2016-02-15 14:56:46 +01:00
drm_flip_work.c
drm_fops.c drm: Nuke vblank event file cleanup code 2016-02-08 09:55:47 +01:00
drm_gem_cma_helper.c drm: Use the driver's gem_object_free function from CMA helpers. 2015-12-15 10:23:44 +01:00
drm_gem.c drm: Remove opencoded drm_gem_object_release_handle() 2016-01-05 16:23:09 +01:00
drm_global.c
drm_hashtab.c tree wide: use kvfree() than conditional kfree()/vfree() 2016-01-22 17:02:18 -08:00
drm_info.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c
drm_irq.c drm/vblank: Use drm_event_reserve_init 2016-02-08 09:54:54 +01:00
drm_kms_helper_common.c drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers. 2016-02-12 14:22:40 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c drm/dsi: Add Turn On/Shutdown Peripheral command helpers 2015-11-24 10:25:14 +01:00
drm_mm.c
drm_modes.c drm: modes: add missing [drm] to message printing 2016-02-09 16:34:44 +01:00
drm_modeset_lock.c drm/doc: Convert to markdown 2015-12-15 10:22:26 +01:00
drm_of.c
drm_panel.c
drm_pci.c drm: add drm_pcie_get_max_link_width helper (v2) 2015-12-21 16:42:31 -05:00
drm_plane_helper.c drm: Pass 'name' to drm_universal_plane_init() 2015-12-11 09:13:10 +01:00
drm_platform.c
drm_prime.c drm: prime: Honour O_RDWR during prime-handle-to-fd 2016-02-09 09:25:12 +01:00
drm_probe_helper.c Merge branch 'for-linus' into for-next 2015-12-23 08:33:34 +01:00
drm_rect.c drm: Add "prefix" parameter to drm_rect_debug_print() 2015-11-24 11:47:46 +01:00
drm_scatter.c
drm_sysfs.c drm/sysfs: use kobj_to_dev() 2016-01-13 16:43:07 +01:00
drm_trace_points.c
drm_trace.h
drm_vm.c
drm_vma_manager.c
Kconfig Merge branch 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-02-19 11:13:01 +10:00
Makefile Merge tag 'topic/drm-misc-2016-02-18' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-02-19 10:57:44 +10:00