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Connecting a 320x240 parallel display on i.MX6 resulted in an invalid DRDY
signal because the DC would not receive NL/EOL events on every line.
Reducing the allocated DMFC space from 4 slots (256 * 128-bit) to 2 slots
(128 * 128-bit) solved the problem.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Booting a mx6 with CONFIG_PROVE_LOCKING we get:
======================================================
[ INFO: possible circular locking dependency detected ]
3.12.0-rc4-next-20131009+ #34 Not tainted
-------------------------------------------------------
swapper/0/1 is trying to acquire lock:
(&imx_drm_device->mutex){+.+.+.}, at: [<804575a8>] imx_drm_encoder_get_mux_id+0x28/0x98
but task is already holding lock:
(&crtc->mutex){+.+...}, at: [<802fe778>] drm_modeset_lock_all+0x40/0x54
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&crtc->mutex){+.+...}:
[<800777d0>] __lock_acquire+0x18d4/0x1c24
[<80077fec>] lock_acquire+0x68/0x7c
[<805ead5c>] _mutex_lock_nest_lock+0x58/0x3a8
[<802fec50>] drm_crtc_init+0x48/0xa8
[<80457c88>] imx_drm_add_crtc+0xd4/0x144
[<8045e2e8>] ipu_drm_probe+0x114/0x1fc
[<80312278>] platform_drv_probe+0x20/0x50
[<80310c68>] driver_probe_device+0x110/0x22c
[<80310e20>] __driver_attach+0x9c/0xa0
[<8030f218>] bus_for_each_dev+0x5c/0x90
[<80310750>] driver_attach+0x20/0x28
[<8031034c>] bus_add_driver+0xdc/0x1dc
[<803114d8>] driver_register+0x80/0xfc
[<80312198>] __platform_driver_register+0x50/0x64
[<808172fc>] ipu_drm_driver_init+0x18/0x20
[<800088c0>] do_one_initcall+0xfc/0x160
[<807e7c5c>] kernel_init_freeable+0x104/0x1d4
[<805e2930>] kernel_init+0x10/0xec
[<8000ea68>] ret_from_fork+0x14/0x2c
-> #1 (&dev->mode_config.mutex){+.+.+.}:
[<800777d0>] __lock_acquire+0x18d4/0x1c24
[<80077fec>] lock_acquire+0x68/0x7c
[<805eb100>] mutex_lock_nested+0x54/0x3a4
[<802fe758>] drm_modeset_lock_all+0x20/0x54
[<802fead4>] drm_encoder_init+0x20/0x7c
[<80457ae4>] imx_drm_add_encoder+0x88/0xec
[<80459838>] imx_ldb_probe+0x344/0x4fc
[<80312278>] platform_drv_probe+0x20/0x50
[<80310c68>] driver_probe_device+0x110/0x22c
[<80310e20>] __driver_attach+0x9c/0xa0
[<8030f218>] bus_for_each_dev+0x5c/0x90
[<80310750>] driver_attach+0x20/0x28
[<8031034c>] bus_add_driver+0xdc/0x1dc
[<803114d8>] driver_register+0x80/0xfc
[<80312198>] __platform_driver_register+0x50/0x64
[<8081722c>] imx_ldb_driver_init+0x18/0x20
[<800088c0>] do_one_initcall+0xfc/0x160
[<807e7c5c>] kernel_init_freeable+0x104/0x1d4
[<805e2930>] kernel_init+0x10/0xec
[<8000ea68>] ret_from_fork+0x14/0x2c
-> #0 (&imx_drm_device->mutex){+.+.+.}:
[<805e510c>] print_circular_bug+0x74/0x2e0
[<80077ad0>] __lock_acquire+0x1bd4/0x1c24
[<80077fec>] lock_acquire+0x68/0x7c
[<805eb100>] mutex_lock_nested+0x54/0x3a4
[<804575a8>] imx_drm_encoder_get_mux_id+0x28/0x98
[<80459a98>] imx_ldb_encoder_prepare+0x34/0x114
[<802ef724>] drm_crtc_helper_set_mode+0x1f0/0x4c0
[<802f0344>] drm_crtc_helper_set_config+0x828/0x99c
[<802ff270>] drm_mode_set_config_internal+0x5c/0xdc
[<802eebe0>] drm_fb_helper_set_par+0x50/0xb4
[<802af580>] fbcon_init+0x490/0x500
[<802dd104>] visual_init+0xa8/0xf8
[<802df414>] do_bind_con_driver+0x140/0x37c
[<802df764>] do_take_over_console+0x114/0x1c4
[<802af65c>] do_fbcon_takeover+0x6c/0xd4
[<802b2b30>] fbcon_event_notify+0x7c8/0x818
[<80049954>] notifier_call_chain+0x4c/0x8c
[<80049cd8>] __blocking_notifier_call_chain+0x50/0x68
[<80049d10>] blocking_notifier_call_chain+0x20/0x28
[<802a75f0>] fb_notifier_call_chain+0x1c/0x24
[<802a9224>] register_framebuffer+0x188/0x268
[<802ee994>] drm_fb_helper_initial_config+0x2bc/0x4b8
[<802f118c>] drm_fbdev_cma_init+0x7c/0xec
[<80817288>] imx_fb_helper_init+0x54/0x90
[<800088c0>] do_one_initcall+0xfc/0x160
[<807e7c5c>] kernel_init_freeable+0x104/0x1d4
[<805e2930>] kernel_init+0x10/0xec
[<8000ea68>] ret_from_fork+0x14/0x2c
other info that might help us debug this:
Chain exists of:
&imx_drm_device->mutex --> &dev->mode_config.mutex --> &crtc->mutex
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&crtc->mutex);
lock(&dev->mode_config.mutex);
lock(&crtc->mutex);
lock(&imx_drm_device->mutex);
*** DEADLOCK ***
6 locks held by swapper/0/1:
#0: (registration_lock){+.+.+.}, at: [<802a90bc>] register_framebuffer+0x20/0x268
#1: (&fb_info->lock){+.+.+.}, at: [<802a7a90>] lock_fb_info+0x20/0x44
#2: (console_lock){+.+.+.}, at: [<802a9218>] register_framebuffer+0x17c/0x268
#3: ((fb_notifier_list).rwsem){.+.+.+}, at: [<80049cbc>] __blocking_notifier_call_chain+0x34/0x68
#4: (&dev->mode_config.mutex){+.+.+.}, at: [<802fe758>] drm_modeset_lock_all+0x20/0x54
#5: (&crtc->mutex){+.+...}, at: [<802fe778>] drm_modeset_lock_all+0x40/0x54
In order to avoid this lockdep warning, remove the locking from
imx_drm_encoder_get_mux_id() and imx_drm_crtc_panel_format_pins().
Tested on a mx6sabrelite and mx53qsb.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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'imx_ldb_dt_ids' is always compiled in. Hence of_match_ptr() is
not needed.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We want the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Staticize of_get_data_mapping() in order to fix the following sparse warning:
drivers/staging/imx-drm/imx-ldb.c:424:11: warning: symbol 'of_get_data_mapping' was not declared. Should it be static?
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since commit b5dc0d10 (drm/imx: kill firstopen callback) the following probe
failure is seen:
[drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[drm] No driver support for vblank timestamp query.
[drm] Initialized imx-drm 1.0.0 20120507 on minor 0
imx-ldb ldb.10: adding encoder failed with -16
imx-ldb: probe of ldb.10 failed with error -16
imx-ipuv3 2400000.ipu: IPUv3H probed
imx-ipuv3 2800000.ipu: IPUv3H probed
imx-ipuv3-crtc imx-ipuv3-crtc.0: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.0 failed with error -16
imx-ipuv3-crtc imx-ipuv3-crtc.1: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.1 failed with error -16
imx-ipuv3-crtc imx-ipuv3-crtc.2: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.2 failed with error -16
imx-ipuv3-crtc imx-ipuv3-crtc.3: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.3 failed with error -16
The reason for the probe failure is that now 'imxdrm->references' is incremented
early in imx_drm_driver_load(), so the following checks in imx_drm_add_crtc()
and imx_drm_add_encoder():
if (imxdrm->references) {
ret = -EBUSY;
goto err_busy;
}
,will always fail.
Instead of manually keeping the references in the imx-drm driver, let's use
drm->open_count.
After this patch, lvds panel is functional on a mx6qsabrelite board.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull drm tree changes from Dave Airlie:
"This is the main drm pull request, I have some overlap with sound and
arm-soc, the sound patch is acked and may conflict based on -next
reports but should be a trivial fixup, which I'll leave to you!
Highlights:
- new drivers:
MSM driver from Rob Clark
- non-drm:
switcheroo and hdmi audio driver support for secondary GPU
poweroff, so drivers can use runtime PM to poweroff the GPUs. This
can save 5 or 6W on some optimus laptops.
- drm core:
combined GEM and TTM VMA manager
per-filp mmap permission tracking
initial rendernode support (via a runtime enable for now, until we get api stable),
remove old proc support,
lots of cleanups of legacy code
hdmi vendor infoframes and 4k modes
lots of gem/prime locking and races fixes
async pageflip scaffolding
drm bridge objects
- i915:
Haswell PC8+ support and eLLC support, HDMI 4K support, initial
per-process VMA pieces, watermark reworks, convert to generic hdmi
infoframes, encoder reworking, fastboot support,
- radeon:
CIK PM support, remove 3d blit code in favour of DMA engines,
Berlin GPU support, HDMI audio fixes
- nouveau:
secondary GPU power down support for optimus laptops, lots of
fixes, use MSI, VP3 engine support
- exynos:
runtime pm support for g2d, DT support, remove non-DT,
- tda998x i2c driver:
lots of fixes for sync issues
- gma500:
lots of cleanups
- rcar:
add LVDS support, fbdev emulation,
- tegra:
just minor fixes"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (684 commits)
drm/exynos: Fix build error with exynos_drm_connector.c
drm/exynos: Remove non-DT support in exynos_drm_fimd
drm/exynos: Remove non-DT support in exynos_hdmi
drm/exynos: Remove non-DT support in exynos_drm_g2d
drm/exynos: Remove non-DT support in exynos_hdmiphy
drm/exynos: Remove non-DT support in exynos_ddc
drm/exynos: Make Exynos DRM drivers depend on OF
drm/exynos: Consider fallback option to allocation fail
drm/exynos: fimd: move platform data parsing to separate function
drm/exynos: fimd: get signal polarities from device tree
drm/exynos: fimd: replace struct fb_videomode with videomode
drm/exynos: check a pixel format to a particular window layer
drm/exynos: fix fimd pixel format setting
drm/exynos: Add NULL pointer check
drm/exynos: Remove redundant error messages
drm/exynos: Add missing of.h header include
drm/exynos: Remove redundant NULL check in exynos_drm_buf
drm/exynos: add device tree support for rotator
drm/exynos: Add missing includes
drm/exynos: add runtime pm interfaces to g2d driver
...
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"Highlights:
- OF and ACPI helpers are now included in the core, and not in
external files anymore. This removes dependency problems for
modules and is cleaner, in general.
- mv64xxx-driver gains fifo usage to support mv78230
- imx-driver overhaul to support VF610
- various cleanups, most notably related to devm_* and CONFIG_PM
usage
- driver bugfixes and smaller feature additions"
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (51 commits)
i2c: rcar: add rcar-H2 support
i2c: sirf: retry 3 times as sometimes we get random noack and timeout
i2c: sirf: support reverse direction of address
i2c: sirf: fix the typo for setting bitrate to less than 100k
i2c: sirf: we need to wait I2C_RESET status in resume
i2c: sirf: reset i2c controller early after we get a noack
i2c: designware: get SDA hold time, HCNT and LCNT configuration from ACPI
i2c: designware: make HCNT/LCNT values configurable
i2c: mpc: cleanup clock API use
i2c: pnx: fix error return code in i2c_pnx_probe()
i2c: ismt: add error return code in probe()
i2c: mv64xxx: fix typo in binding documentation
i2c: imx: use exact SoC revision to document binding
i2c: move ACPI helpers into the core
i2c: move OF helpers into the core
i2c: mv64xxx: Fix timing issue on Armada XP (errata FE-8471889)
i2c: mv64xxx: Add I2C Transaction Generator support
i2c: powermac: fix return path on error
Documentation: i2c: Fix example in instantiating-devices
i2c: tiny-usb: do not use stack as URB transfer_buffer
...
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This lets drivers see the flags requested by the application
[airlied: fixup for rcar/imx/msm]
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
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I2C of helpers used to live in of_i2c.c but experience (from SPI) shows
that it is much cleaner to have this in the core. This also removes a
circular dependency between the helpers and the core, and so we can
finally register child nodes in the core instead of doing this manually
in each driver. So, fix the drivers and documentation, too.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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"map" needs to be signed for the error handling to work. In the success
case then it holds a small non-negative value.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add MODULE_ALIAS, so that auto module loading can work.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add MODULE_ALIAS, so that auto module loading can work.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add MODULE_ALIAS, so that auto module loading can work.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add MODULE_ALIAS, so that auto module loading can work.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This thing seems to do some kind of delayed setup. Really, real kms
drivers shouldn't do that at all. Either stuff needs to be dynamically
hotplugged or the driver setup sequence needs to be fixed.
This patch here just moves the setup at the very end of the driver
load callback, with the locking adjusted accordingly.
v2: Also move the corresponding put from ->lastclose to ->unload.
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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So I've stumbled over drm_fasync and wondered what it does. Digging
that up is quite a story.
First I've had to read up on what this does and ended up being rather
bewildered why peopled loved signals so much back in the days that
they've created SIGIO just for that ...
Then I wondered how this ever works, and what that strange "No-op."
comment right above it should mean. After all calling the core fasync
helper is pretty obviously not a noop. After reading through the
kernels FASYNC implementation I've noticed that signals are only sent
out to the processes attached with FASYNC by calling kill_fasync.
No merged drm driver has ever done that.
After more digging I've found out that the only driver that ever used
this is the so called GAMMA driver. I've frankly never heard of such a
gpu brand ever before. Now FASYNC seems to not have been the only bad
thing with that driver, since Dave Airlie removed it from the drm
driver with prejudice:
commit 1430163b4bbf7b00367ea1066c1c5fe85dbeefed
Author: Dave Airlie <airlied@linux.ie>
Date: Sun Aug 29 12:04:35 2004 +0000
Drop GAMMA DRM from a great height ...
Long story short, the drm fasync support seems to be doing absolutely
nothing. And the only user of it was never merged into the upstream
kernel. And we don't need any fops->fasync callback since the fcntl
implementation in the kernel already implements the noop case
correctly.
So stop this particular cargo-cult and rip it all out.
v2: Kill drm_fasync assignments in rcar (newly added) and imx drivers
(somehow I've missed that one in staging). Also drop the reference in
the drm DocBook. ARM compile-fail reported by Rob Clark.
v3: Move the removal of dev->buf_asnyc assignment in drm_setup to this
patch here.
v4: Actually git add ... tsk.
Cc: Dave Airlie <airlied@linux.ie>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Rob Clark <robdclark@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Merge the rcar stable branch that is being shared with the arm-soc tree.
Signed-off-by: Dave Airlie <airlied@redhat.com>
* pfdo/drm-rcar-for-v3.12: (220 commits)
drm/rcar-du: Add FBDEV emulation support
drm/rcar-du: Add internal LVDS encoder support
drm/rcar-du: Configure RGB output routing to DPAD0
drm/rcar-du: Rework output routing support
drm/rcar-du: Add support for DEFR8 register
drm/rcar-du: Add support for multiple groups
drm/rcar-du: Fix buffer pitch alignment for R8A7790 DU
drm/rcar-du: Add support for the R8A7790 DU
drm/rcar-du: Move output routing configuration to group
drm/rcar-du: Remove register definitions for the second channel
drm/rcar-du: Use dynamic number of CRTCs instead of CRTCs array size
drm/rcar-du: Introduce CRTCs groups
drm/rcar-du: Rename rcar_du_plane_(init|register) to rcar_du_planes_*
drm/rcar-du: Create rcar_du_planes structure
drm/rcar-du: Rename platform data fields to match what they describe
drm/rcar-du: Merge LVDS and VGA encoder code
drm/rcar-du: Split VGA encoder and connector
drm/rcar-du: Split LVDS encoder and connector
drm/rcar-du: Clarify comment regarding plane Y source coordinate
drm/rcar-du: Support per-CRTC clock and IRQ
...
Conflicts:
drivers/gpu/drm/i915/i915_dma.c
drivers/gpu/drm/i915/intel_pm.c
drivers/gpu/drm/qxl/qxl_release.c
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Fixed a coding style issue of 80 character per line.
Signed-off-by: Andreas Werner <wernerandy@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Because, there is no reason for it not to be const.
v1: original
v2: fix compile break in vmwgfx, and couple related cleanups suggested
by Ville Syrjälä
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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All the gem based kms drivers really want the same function to
destroy a dumb framebuffer backing storage object.
So give it to them and roll it out in all drivers.
This still leaves the option open for kms drivers which don't use GEM
for backing storage, but it does decently simplify matters for gem
drivers.
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>
Cc: Ben Skeggs <skeggsb@gmail.com>
Reviwed-by: Rob Clark <robdclark@gmail.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Added missing MFD_SYSCON dependency for LVDS display bridge
in order to fix the following link error.
drivers/staging/imx-drm/imx-ldb.c:484: undefined reference to `syscon_regmap_lookup_by_phandle'
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We want these fixes here.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This thing seems to do some kind of delayed setup. Really, real kms
drivers shouldn't do that at all. Either stuff needs to be dynamically
hotplugged or the driver setup sequence needs to be fixed.
This patch here just moves the setup at the very end of the driver
load callback, with the locking adjusted accordingly.
v2: Also move the corresponding put from ->lastclose to ->unload.
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add MODULE_ALIAS, so that auto module loading can work.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Instead of jumping to goto labels, just return the error code directly.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As devm_ioremap_resource() is used on probe, there is no need to explicitly
check the return value from platform_get_resource(), as this is something that
devm_ioremap_resource() takes care by itself.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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LVDS Display Bridge is currently supported, so remove it from the missing
features list.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix the following sparse warnings:
drivers/staging/imx-drm/imx-tve.c:133:13: warning: context imbalance in 'tve_lock' - wrong count at exit
drivers/staging/imx-drm/imx-tve.c:139:13: warning: context imbalance in 'tve_unlock' - unexpected unlock
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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IPUv3 has a total of 3 flows (one synchronous flow and 2 asynchronous flows).
Let's add a definition for such number in order to let the code easier to
understand.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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No need to have braces for a single line 'if' block
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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devm_kzalloc() may fail, so let's check its return value.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When building imx_v6_v7_defconfig with imx-drm drivers selected as modules, we
get the following build error:
ERROR: "imx_drm_encoder_get_mux_id" [drivers/staging/imx-drm/imx-ldb.ko] undefined!
Export the required function to avoid this problem.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit ac4c1a9b33 ("staging: drm/imx: Add LDB support") added the
DRM_IMX_LDB Kconfig entry. That entry selects OF_VIDEOMODE. But there is
no Kconfig symbol named OF_VIDEOMODE. The select statement for that
symbol is a nop. Drop it.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Correct spelling typo in staging/imx-drm
Singed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull drm updates from Dave Airlie:
"Okay this is the big one, I was stalled on the fbdev pull req as I
stupidly let fbdev guys merge a patch I required to fix a warning with
some patches I had, they ended up merging the patch from the wrong
place, but the warning should be fixed. In future I'll just take the
patch myself!
Outside drm:
There are some snd changes for the HDMI audio interactions on haswell,
they've been acked for inclusion via my tree. This relies on the
wound/wait tree from Ingo which is already merged.
Major changes:
AMD finally released the dynamic power management code for all their
GPUs from r600->present day, this is great, off by default for now but
also a huge amount of code, in fact it is most of this pull request.
Since it landed there has been a lot of community testing and Alex has
sent a lot of fixes for any bugs found so far. I suspect radeon might
now be the biggest kernel driver ever :-P p.s. radeon.dpm=1 to enable
dynamic powermanagement for anyone.
New drivers:
Renesas r-car display unit.
Other highlights:
- core: GEM CMA prime support, use new w/w mutexs for TTM
reservations, cursor hotspot, doc updates
- dvo chips: chrontel 7010B support
- i915: Haswell (fbc, ips, vecs, watermarks, audio powerwell),
Valleyview (enabled by default, rc6), lots of pll reworking, 30bpp
support (this time for sure)
- nouveau: async buffer object deletion, context/register init
updates, kernel vp2 engine support, GF117 support, GK110 accel
support (with external nvidia ucode), context cleanups.
- exynos: memory leak fixes, Add S3C64XX SoC series support, device
tree updates, common clock framework support,
- qxl: cursor hotspot support, multi-monitor support, suspend/resume
support
- mgag200: hw cursor support, g200 mode limiting
- shmobile: prime support
- tegra: fixes mostly
I've been banging on this quite a lot due to the size of it, and it
seems to okay on everything I've tested it on."
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (811 commits)
drm/radeon/dpm: implement vblank_too_short callback for si
drm/radeon/dpm: implement vblank_too_short callback for cayman
drm/radeon/dpm: implement vblank_too_short callback for btc
drm/radeon/dpm: implement vblank_too_short callback for evergreen
drm/radeon/dpm: implement vblank_too_short callback for 7xx
drm/radeon/dpm: add checks against vblank time
drm/radeon/dpm: add helper to calculate vblank time
drm/radeon: remove stray line in old pm code
drm/radeon/dpm: fix display_gap programming on rv7xx
drm/nvc0/gr: fix gpc firmware regression
drm/nouveau: fix minor thinko causing bo moves to not be async on kepler
drm/radeon/dpm: implement force performance level for TN
drm/radeon/dpm: implement force performance level for ON/LN
drm/radeon/dpm: implement force performance level for SI
drm/radeon/dpm: implement force performance level for cayman
drm/radeon/dpm: implement force performance levels for 7xx/eg/btc
drm/radeon/dpm: add infrastructure to force performance levels
drm/radeon: fix surface setup on r1xx
drm/radeon: add support for 3d perf states on older asics
drm/radeon: set default clocks for SI when DPM is disabled
...
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This depends on the patch "genirq: irqchip: Add mask to block out invalid irqs"
and masks out reserved bits using the unused interrupt bitfield.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This depends on the patch "genirq: Generic chip: Add linear irq domain support"
and removes the custom IPU irq_chip and irq_domain_ops. Instead, the generic
irq chip implementation is reused.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since commit 8cf1e9811471f2910fa38dc1b28e1789080ba961
("drm: Add consistency check for page-flipping") drm_mode_page_flip_ioctl
contains a WARN_ON that triggers if the .page_flip callback didn't update
the crtc->fb pointer to the new framebuffer immediately.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The IPU can request up to four pixels per access, which gives four
times the bandwidth compared to what the driver currently assumes.
After correcting this, we have to increase safety margins for
bandwidth requirement calculations.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The IPU has a lot of interrupts. Instead of allocating descs for all
of them, register a linear irq domain and create mappings as needed.
This was listed in the TODO as a prerequisite to move the IPU driver
out of staging.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There are 15 32-bit registers altogether.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since 18 bit is supported as datawidth in device tree it should be
supported in driver. Beside the LDB channel the IPU channel has also
to be configured to use BGR666.
Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This adds support for the LVDS Display Bridge contained
in i.MX5 and i.MX6 SoCs.
Bit mapping, data width, and video timings are configurable
via device tree. Dual-channel mode is supported for a single
high-resolution source.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Many of the drivers didn't implement palette/gamma handling, but were forced
to provide stubs for the hooks to avoid drm_fb_helper from oopsing. Now that
the hooks are optional, we can eliminate all the stubs.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@gmail.com>
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Add a MODULE_DEVICE_TABLE annotation so that parallel display module
can be autoloaded based on the device-tree information.
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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