The Synopsys Designware HDMI TX Controller does not enforce register
access on platforms instanciating it. The current driver supports two
different types of memory-mapped flat register access, but in order to
support the Amlogic Meson SoCs integration, and provide a more generic
way to handle all sorts of register mapping, switch the register access
to use the regmap infrastructure.
In the case of registers that are not flat memory-mapped or do not
conform to the current driver implementation, a regmap struct can be
given in the plat_data and be used at probe or bind.
Since the AHB audio driver is only available with direct memory access,
only allow the I2S audio driver to be registered is directly
memory-mapped.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170303172007.26541-10-laurent.pinchart+renesas@ideasonboard.com
When powering the PHY up we need to wait for the PLL to lock. This is
done by polling the TX_PHY_LOCK bit in the HDMI_PHY_STAT0 register
(interrupt-based wait could be implemented as well but is likely
overkill). The bit is asserted when the PLL locks, but the current code
incorrectly waits for the bit to be deasserted. Fix it, and while at it,
replace the udelay() with a sleep as the code never runs in
non-sleepable context.
To be consistent with the power down implementation move the poll loop
to the power off function.
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/20170305233557.11945-1-laurent.pinchart+renesas@ideasonboard.com
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
The THC63LVDM83D is a transparent LVDS encoder. Unlike dumb LVDS
encoders it can be controlled through a few pins (power down, LVDS
swing, clock edge selection) and requires power supplies. However, on
several boards where the device is used neither the control pins nor the
power supply are controllable.
To avoid developing a separate device-specific driver add a
"thine,thc63lvdm83d" compatible entry to the lvds-encoder driver. This
will allow supporting many THC63LVDM83D-based boards easily, while
allowing future development of an thc63lvdm83d driver when needed
without breaking backward compatibility.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170302104728.7150-5-laurent.pinchart+renesas@ideasonboard.com
The ADV7123 is a transparent VGA DAC. Unlike dumb VGA DACs it can be
controlled through a power save pin, and requires a power supply.
However, on most boards where the device is used neither the power save
signal nor the power supply are controllable.
To avoid developing a separate device-specific driver add an
"adi,adv7123" compatible entry to the dumb-vga-dac driver. This will
allow supporting most ADV7123-based boards easily, while allowing future
development of an adv7123 driver when needed without breaking backward
compatibility.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170302104728.7150-4-laurent.pinchart+renesas@ideasonboard.com
MHL3 protocol requires registry adjustments depending on chosen video mode.
Necessary information is gathered in mode_fixup callback. In case of HDMI
video modes driver should also send special AVI and MHL3 infoframes.
The patch introduces generic helpers for handling MHL3 infoframes, in
case of appearance of other users of MHL3 infoframes these function can
be moved to common library.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1485935272-17337-21-git-send-email-a.hajda@samsung.com
Another round of -misc stuff:
- Noralf debugfs cleanup cleanup (not yet everything, some more driver
patches awaiting acks).
- More doc work.
- edid/infoframe fixes from Ville.
- misc 1-patch fixes all over, as usual
Noralf needs this for his tinydrm pull request.
* tag 'drm-misc-next-2017-01-30' of git://anongit.freedesktop.org/git/drm-misc: (48 commits)
drm/vc4: Remove vc4_debugfs_cleanup()
dma/fence: Export enable-signaling tracepoint for emission by drivers
drm/tilcdc: Remove tilcdc_debugfs_cleanup()
drm/tegra: Remove tegra_debugfs_cleanup()
drm/sti: Remove drm_debugfs_remove_files() calls
drm/radeon: Remove drm_debugfs_remove_files() call
drm/omap: Remove omap_debugfs_cleanup()
drm/hdlcd: Remove hdlcd_debugfs_cleanup()
drm/etnaviv: Remove etnaviv_debugfs_cleanup()
drm/etnaviv: allow build with COMPILE_TEST
drm/amd/amdgpu: Remove drm_debugfs_remove_files() call
drm/prime: Clarify DMA-BUF/GEM Object lifetime
drm/ttm: Make sure BOs being swapped out are cacheable
drm/atomic: Remove drm_atomic_debugfs_cleanup()
drm: drm_minor_register(): Clean up debugfs on failure
drm: debugfs: Remove all files automatically on cleanup
drm/fourcc: add vivante tiled layout format modifiers
drm/edid: Set YQ bits in the AVI infoframe according to CEA-861-F
drm/edid: Set AVI infoframe Q even when QS=0
drm/edid: Introduce drm_hdmi_avi_infoframe_quant_range()
...
- cleanups&fixes for dw-hdmi bride driver (Laurent)
- updates for adv bridge driver (John Stultz) for nexus
- drm_crtc_from_index helper rollout (Shawn Guo)
- removing drm_framebuffer_unregister_private from drivers&core
- target_vblank (Andrey Grodzovsky)
- misc tiny stuff
* tag 'drm-misc-next-2017-01-23' of git://anongit.freedesktop.org/git/drm-misc: (49 commits)
drm: qxl: Open code teardown function for qxl
drm: qxl: Open code probing sequence for qxl
drm/bridge: adv7511: Re-write the i2c address before EDID probing
drm/bridge: adv7511: Reuse __adv7511_power_on/off() when probing EDID
drm/bridge: adv7511: Rework adv7511_power_on/off() so they can be reused internally
drm/bridge: adv7511: Enable HPD interrupts to support hotplug and improve monitor detection
drm/bridge: adv7511: Switch to using drm_kms_helper_hotplug_event()
drm/bridge: adv7511: Use work_struct to defer hotplug handing to out of irq context
drm: vc4: use crtc helper drm_crtc_from_index()
drm: tegra: use crtc helper drm_crtc_from_index()
drm: nouveau: use crtc helper drm_crtc_from_index()
drm: mediatek: use crtc helper drm_crtc_from_index()
drm: kirin: use crtc helper drm_crtc_from_index()
drm: exynos: use crtc helper drm_crtc_from_index()
dt-bindings: display: dw-hdmi: Clean up DT bindings documentation
drm: bridge: dw-hdmi: Assert SVSRET before resetting the PHY
drm: bridge: dw-hdmi: Fix the name of the PHY reset macros
drm: bridge: dw-hdmi: Define and use macros for PHY register addresses
drm: bridge: dw-hdmi: Detect PHY type at runtime
drm: bridge: dw-hdmi: Handle overflow workaround based on device version
...
Backmerge Linus master to get the connector locking revert.
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux: (645 commits)
sysctl: fix proc_doulongvec_ms_jiffies_minmax()
Revert "drm/probe-helpers: Drop locking from poll_enable"
MAINTAINERS: add Dan Streetman to zbud maintainers
MAINTAINERS: add Dan Streetman to zswap maintainers
mm: do not export ioremap_page_range symbol for external module
mn10300: fix build error of missing fpu_save()
romfs: use different way to generate fsid for BLOCK or MTD
frv: add missing atomic64 operations
mm, page_alloc: fix premature OOM when racing with cpuset mems update
mm, page_alloc: move cpuset seqcount checking to slowpath
mm, page_alloc: fix fast-path race with cpuset update or removal
mm, page_alloc: fix check for NULL preferred_zone
kernel/panic.c: add missing \n
fbdev: color map copying bounds checking
frv: add atomic64_add_unless()
mm/mempolicy.c: do not put mempolicy before using its nodemask
radix-tree: fix private list warnings
Documentation/filesystems/proc.txt: add VmPin
mm, memcg: do not retry precharge charges
proc: add a schedule point in proc_pid_readdir()
...
The of_node member in struct drm_bridge is hidden when CONFIG_OF
is disabled, causing a build error:
drivers/gpu/drm/bridge/dw-hdmi.c: In function '__dw_hdmi_probe':
drivers/gpu/drm/bridge/dw-hdmi.c:2063:14: error: 'struct drm_bridge' has no member named 'of_node'
We could fix this either using a Kconfig dependency on CONFIG_OF
or making the one line conditional. The latter gives us better
compile test coverage, so this is what I'm doing here.
Fixes: 69497eb923 ("drm: bridge: dw-hdmi: Implement DRM bridge registration")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170123122312.3290934-1-arnd@arndb.de
