According to the PHY IP core vendor, the SVSRET signal must be asserted
before resetting the PHY. Tests on RK3288 and R-Car Gen3 showed no
regression, the change should thus be safe.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-20-laurent.pinchart+renesas@ideasonboard.com
The PHY reset signal is controlled by bit PHYRSTZ in the MC_PHYRSTZ
register. The signal is active low on Gen1 PHYs and active high on Gen2
PHYs. The driver toggles the signal high then low, which is correct for
all currently supported platforms, but the register values macros are
incorrectly named. Replace them with a single macro named after the bit,
and add a comment to the source code to explain the behaviour.
The driver's behaviour isn't changed by this rename, the code will still
need to be fixed to support Gen1 PHYs.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-19-laurent.pinchart+renesas@ideasonboard.com
Replace the hardcoded register address numerical values with macros to
clarify the code.
This change has been tested by comparing the assembly code before and
after the change.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-18-laurent.pinchart+renesas@ideasonboard.com
Use the device version queried at runtime instead of the device type
provided through platform data to handle the overflow workaround. This
will make support of other SoCs integrating the same HDMI TX controller
version easier.
Among the supported platforms only i.MX6DL and i.MX6Q have been
identified as needing the workaround. Disabling it on Rockchip RK3288
(which integrates a v2.00a controller) didn't produce any error or
artifact.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-16-laurent.pinchart+renesas@ideasonboard.com
Bit 0 in CONFIG1_ID tells whether the IP core uses an AHB slave
interface for control. The correct way to identify AHB audio DMA support
is through bit 1 in CONFIG3_ID.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-15-laurent.pinchart+renesas@ideasonboard.com
The DWC HDMI TX can be recognized by the two product identification
registers. If the registers don't read as expect the IP will be very
different than what the driver has been designed for, or will be
misconfigured in a way that makes it non-operational (invalid memory
address, incorrect clocks, ...). We should reject this situation with an
error.
While this isn't critical for proper operation with supported IPs at the
moment, the driver will soon gain automatic device-specific handling
based on runtime device identification. This change makes it easier to
implement that without having to default to a random guess in case the
device can't be identified.
While at it print a readable version number in the device identification
message instead of raw register values.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-14-laurent.pinchart+renesas@ideasonboard.com
The bit is documented in a Rockchip BSP as
#define m_SVSRET_SIG (1 << 5) /* depend on PHY_MHL_COMB0=1 */
This is confirmed by a Renesas platform, which uses a 2.0 DWC HDMI TX as
the RK3288. Rename the bit accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-13-laurent.pinchart+renesas@ideasonboard.com
The current code hard codes the call of hdmi_phy_configure() to be 8bpp
and provides extraneous error checking to verify that this hardcoded
value is correct. Simplify the implementation by removing the argument.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-12-laurent.pinchart+renesas@ideasonboard.com
As an option for drivers not based on the component framework, register
the bridge with the DRM core with the DRM bridge API. Existing drivers
based on dw_hdmi_bind() and dw_hdmi_unbind() are not affected as those
functions are preserved with their current behaviour.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-11-laurent.pinchart+renesas@ideasonboard.com
The DRM device is not guaranteed by the bridge API to be available
before the attach callback. The driver performs properly at the moment
as it doesn't use the drm_bridge_add() registration method. As this will
be changed later, move connector creation to attach time to ensure
compatibility with the API.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-10-laurent.pinchart+renesas@ideasonboard.com
The next commit will reference structures and functions in a way that
currently requires forward declarations. Reorder the functions to avoid
that. No functional change to the code is performed.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-9-laurent.pinchart+renesas@ideasonboard.com
There's no need to duplicate identical code in multiple drivers (two at
the moment, one more to come soon). Move it to the dw-hdmi core where it
can be shared. If resource allocation ever becomes device-specific later
we'll always have the option of splitting it out again.
While it at pass the platform device to the bind function to avoid
having to cast struct device to struct platform_device.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-8-laurent.pinchart+renesas@ideasonboard.com
Hotplug events should only be forwarded to the DRM core by the interrupt
handler when the bridge has been attached, otherwise the DRM device
pointer will be NULL, resulting in a crash.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-7-laurent.pinchart+renesas@ideasonboard.com
The 'prep' parameter passed to hdmi_phy_configure() is useless. It is
hardcoded as 0, and if set, simply prevents the configure function from
executing.
Remove it.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-4-laurent.pinchart+renesas@ideasonboard.com
The master argument isn't used. The data argument, a void pointer, is
used by the bind function only where it's cast to a drm_device pointer,
which can easily be obtained from the encoder argument instead. Remove
them.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-3-laurent.pinchart+renesas@ideasonboard.com
The latter is just an int wrapper around the former void function that
unconditionally returns 0. As the return value is never checked, merge
the two functions into one.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-2-laurent.pinchart+renesas@ideasonboard.com
Instead of linking encoders and bridges in every driver (and getting it
wrong half of the time, as many drivers forget to set the drm_bridge
encoder pointer), do so in core code. The drm_bridge_attach() function
needs the encoder and optional previous bridge to perform that task,
update all the callers.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Stefan Agner <stefan@agner.ch> # For DCU
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> # For atmel-hlcdc
Acked-by: Vincent Abriou <vincent.abriou@st.com> # For STI
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> # For sun4i
Acked-by: Xinliang Liu <z.liuxinliang@hisilicon.com> # For hisilicon
Acked-by: Jyri Sarha <jsarha@ti.com> # For tilcdc
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1481709550-29226-4-git-send-email-laurent.pinchart+renesas@ideasonboard.com
Current dw-hdmi is supporting sound via AHB bus, but it has
I2S audio feature too. This patch adds I2S audio support to dw-hdmi.
This HDMI I2S is supported by using ALSA SoC common HDMI encoder
driver.
Tested-by: Jose Abreu <joabreu@synopsys.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/8737j2bxba.wl%kuninori.morimoto.gx@renesas.com
- add support for the HDMI I2C master controller, for boards that
can have their DDC pins connected only to the HDMI TX directly.
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Merge tag 'dw-hdmi-next-2016-09-19' of git://git.pengutronix.de/git/pza/linux into drm-next
dw-hdmi i2c master controller
- add support for the HDMI I2C master controller, for boards that
can have their DDC pins connected only to the HDMI TX directly.
* tag 'dw-hdmi-next-2016-09-19' of git://git.pengutronix.de/git/pza/linux:
drm: bridge/dw_hdmi: add dw hdmi i2c bus adapter support
drm: dw_hdmi: use of_get_i2c_adapter_by_node interface
Drop unneeded drm_connector_unregister() and remove the unnecessary
wrapper functions around drm_connector_cleanup().
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161005143133.5549-1-marex@denx.de
- add active plane reconfiguration support (v4),
use the atomic_disable callback
- stop calling disable_plane manually in the plane destroy path
- let mode cleanup destroy mode objects on driver unbind
- drop deprecated load/unload drm_driver ops
- add exclusive fence to plane state, so the atomic helper can
wait on them, remove the open-coded fence wait from imx-drm
- add low level deinterlacer (VDIC) support
- add support for channel linking via the frame synchronisation unit (FSU)
- add queued image conversion support for memory-to-memory scaling, rotation,
and color space conversion, using IC and IRT.
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Merge tag 'imx-drm-next-2016-09-19' of git://git.pengutronix.de/git/pza/linux into drm-next
imx-drm active plane reconfiguration, cleanup, FSU/IC/IRT/VDIC support
- add active plane reconfiguration support (v4),
use the atomic_disable callback
- stop calling disable_plane manually in the plane destroy path
- let mode cleanup destroy mode objects on driver unbind
- drop deprecated load/unload drm_driver ops
- add exclusive fence to plane state, so the atomic helper can
wait on them, remove the open-coded fence wait from imx-drm
- add low level deinterlacer (VDIC) support
- add support for channel linking via the frame synchronisation unit (FSU)
- add queued image conversion support for memory-to-memory scaling, rotation,
and color space conversion, using IC and IRT.
* tag 'imx-drm-next-2016-09-19' of git://git.pengutronix.de/git/pza/linux:
gpu: ipu-v3: Add queued image conversion support
gpu: ipu-v3: Add ipu_rot_mode_is_irt()
gpu: ipu-v3: fix a possible NULL dereference
drm/imx: parallel-display: detach bridge or panel on unbind
drm/imx: imx-ldb: detach bridge on unbind
drm/imx: imx-ldb: detach panel on unbind
gpu: ipu-v3: Add FSU channel linking support
gpu: ipu-v3: Add Video Deinterlacer unit
drm/imx: add exclusive fence to plane state
drm/imx: fold ipu_plane_disable into ipu_disable_plane
drm/imx: don't destroy mode objects manually on driver unbind
drm/imx: drop deprecated load/unload drm_driver ops
drm/imx: don't call disable_plane in plane destroy path
drm/imx: Add active plane reconfiguration support
drm/imx: Use DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET flag
drm/imx: ipuv3-crtc: Use the callback ->atomic_disable instead of ->disable
gpu: ipu-v3: Do not wait for DMFC FIFO to clear when disabling DMFC channel
The change adds support of internal HDMI I2C master controller, this
subdevice is used by default, if "ddc-i2c-bus" DT property is omitted.
The main purpose of this functionality is to support reading EDID from
an HDMI monitor on boards, which don't have an I2C bus connected to
DDC pins.
The current implementation does not support "I2C Master Interface
Extended Read Mode" to read data addressed by non-zero segment
pointer, this means that if EDID has more than 1 extension blocks,
EDID reading operation won't succeed, in my practice all tested HDMI
monitors have at maximum one extension block.
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This change is needed to properly lock I2C bus driver, which serves
DDC.
The change fixes an overflow over zero of I2C bus driver user counter:
root@imx6q:~# lsmod
Not tainted
dw_hdmi_ahb_audio 4082 0 - Live 0xbf02c000
dw_hdmi_imx 3498 0 - Live 0xbf00d000
dw_hdmi 16398 2 dw_hdmi_ahb_audio,dw_hdmi_imx, Live 0xbf004000
i2c_imx 16687 0 - Live 0xbf017000
root@imx6q:~# rmmod dw_hdmi_imx
root@imx6q:~# lsmod
Not tainted
dw_hdmi_ahb_audio 4082 0 - Live 0xbf02c000
dw_hdmi 16398 1 dw_hdmi_ahb_audio, Live 0xbf004000
i2c_imx 16687 -1 - Live 0xbf017000
^^
root@imx6q:~# rmmod i2c_imx
rmmod: ERROR: Module i2c_imx is in use
Note that prior to this change put_device() coupled with
of_find_i2c_adapter_by_node() was missing on error path of
dw_hdmi_bind(), added i2c_put_adapter() there along with the change.
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Colorspace and scan information values were being written in wrong
offsets. This patch corrects this and writes the values at the
offsets specified in the databook.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Carlos Palminha <palminha@synopsys.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/96fd0f06b7ebc2ee5cb8239a99648f3107e24497.1471530573.git.joabreu@synopsys.com
Instead let drm_mode_config_cleanup() do the work when taking down
the master device. This requires all cleanup functions to be
properly hooked up to the mode object .destroy callback.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
There is no one using the legacy drm_connector_funcs structure since
the imx-drm has been converted to atomic, so we may remove it.
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Wire up CRTCs', planes' and connectors' ->reset, ->duplicate and ->destroy state
hooks to use the default implementations from the atomic helper library.
The helpers track each DRM object state.
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
We have a 1:1 relationship between connectors and encoders, which means
we can rely on the drm_atomic_helper_best_encoder() behavior.
We still have to explicitly assign ->best_encoder() to
drm_atomic_helper_best_encoder(), because the automated fallback to
drm_atomic_helper_best_encoder() when ->best_encoder() is NULL is only
available when the DRM device is using the atomic helpers, and this bridge
is compatible with non-atomic and atomic devices.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465300095-16971-21-git-send-email-boris.brezillon@free-electrons.com
Since your main drm-next pull isn't out of the door yet I figured I might
as well flush out drm-misc instead of delaying for 4.6. It's really just
random stuff all over, biggest thing probably connector_mask tracking from
Maarten.
* tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel: (24 commits)
drm/fb_cma_helper: Remove implicit call to disable_unused_functions
drm/sysfs: use kobj_to_dev()
drm/i915: Init power domains early in driver load
drm: Do not set connector->encoder in drivers
apple-gmux: Add initial documentation
drm: move MODULE_PARM_DESC to other file
drm/edid: index CEA/HDMI mode tables using the VIC
drm/atomic: Remove drm_atomic_connectors_for_crtc.
drm/i915: Update connector_mask during readout, v2.
drm: Remove opencoded drm_gem_object_release_handle()
drm: Do not set outparam on error during GEM handle allocation
drm/docs: more leftovers from the big vtable documentation pile
drm/atomic-helper: Reject legacy flips on a disabled pipe
drm/atomic: add connector mask to drm_crtc_state.
drm/tegra: Use __drm_atomic_helper_reset_connector for subclassing connector state, v2.
drm/atomic: Add __drm_atomic_helper_connector_reset, v2.
drm/i915: Set connector_state->connector using the helper.
drm: Use a normal idr allocation for the obj->name
drm: Only bump object-reference count when adding first handle
drm: Balance error path for GEM handle allocation
...
Fill atomic needed funcs with default atomic helper library.
Rockchip use dw_hdmi, and drm/rockchip will covert to atomic api,
we need dw_hdmi support atomic funcs.
Now another drm driver use dw_hdmi is imx, not yet atomic, so
check DRIVER_ATOMIC at runtime to spilt atomic and not atomic.
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Seems I lied in my last drm-misc pull request and suddenly there's a big
pile of random stuff. Boris dug out Thierry's drm-trivial branch and
resubmitted everything since that branch didn't really work out.
On top of that Nicolas' changes to drm_dev_set_unique - this might
conflict with new driver pulls (I double checked and current drm-next
should be fine), so please beware. The -next/-fixes conflict in vmwgfx
will change slightly with this here too.
* tag 'topic/drm-misc-2015-12-18' of git://anongit.freedesktop.org/drm-intel: (36 commits)
drm: use dev_name as default unique name in drm_dev_alloc()
drm: make drm_dev_set_unique() not use a format string
drm/vmwgfx: Constify function pointer structs
drm/udl: Constify function pointer structs
drm/tegra: Constify function pointer structs
drm/rockchip: Constify function pointer structs
drm/nouveau: Constify function pointer structs
drm/mgag200: Constify function pointer structs
drm/imx: Constify function pointer structs
drm/i2c/sil164: Constify function pointer structs
drm/i2c/adv7511: Constify function pointer structs
drm/exynos: Constify function pointer structs
drm/cirrus: Constify function pointer structs
drm/i2c/ch7006: Constify function pointer structs
drm/bridge/nxp-ptn3460: Constify function pointer structs
drm/bridge/dw_hdmi: Constify function pointer structs
drm/bochs: Constify function pointer structs
drm/atmel-hlcdc: Constify function pointer structs
drm/armada: Constify function pointer structs
drm: Constify drm_encoder_slave_funcs
...
