This patch implements the power on/off sequence
of HDMI PHY in exynos5420 and exynos5250 as provided
by the hardware team.

This has been verified for mulitple iterations of
S2R.
Signed-off-by: NShirish S <s.shirish@samsung.com>
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

These symbols are local to this file.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

i2c.h was included twice.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Exynos drm hdmi driver used to get dummy hdmiphy clock to
control the PMU bit for hdmiphy. This bit needs to be set
before setting any resolution to hdmi hardware. This was
handled using dummy hdmiphy clock which is removed here.

PMU is already defined as system controller for exynos
SoCs. Hdmi driver is modified to control the phy enable bit
inside PMU using regmap interfaces.

Devicetree binding document for hdmi is also updated.
Signed-off-by: NRahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch considers legacy dt binding, and resolves
the issue that the use of existing dtb is broken.

To resove the dt broken issue, this path tries to get
legacy dt nodes from existing dtb directly prior to
getting new dt nodes.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Acked-by: NKyungmin Park <kyungmin.park@samsung.com>

In DVI mode the video preamble and Guard band should
be disabled whereas it should be applied in HDMI mode,
the re-applying of preamble and guard band was missing,
which resulted in display failures when switched to HDMI
mode from DVI mode.
This patch ensures the setting is applied in HDMI mode.
Signed-off-by: NShirish S <s.shirish@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Enable support for hdmi for exynos5420 hdmiphy. Add
compatible string in the of_match table. Also added
hdmiphy configuration values for exynos5420.
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NShirish S <s.shirish@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Previous SoCs have hdmi phys which are accessible through
dedicated i2c lines. Newer SoCs have Apb mapped hdmi phys.
Hdmi driver is modified to support apb mapped phys.
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Cleaning up unnecessary i2c read call after hdmiphy configuration.
This check is redundant since check for hdmiphy pll lock status
confirms the correct settings for phy.
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NDaniel Kurtz <djkurtz@chromium.org>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Before setting the core and timing generation registers,
hdmi driver resets the whole hdmi hardware, which also
resets the audio related registers.

Hdmi reset is replaced by hdmi disable which is called
just before setting the core and timing registers. It
also ensure that audio settings are not changed.
Signed-off-by: NRahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: NShirish S <s.shirish@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch adds a gpio read of hpd during the is_connected
callback. This fixes the case where hdmi is off going into
suspend and the cable is plugged in while suspended. In this
case, the hpd interrupt does not fire and is_connected will
return false.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Our resources were just zalloc'ed as part of hdata.
They are already 0.
Signed-off-by: NDaniel Kurtz <djkurtz@chromium.org>
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Smatch error from arm build: drivers/gpu/drm/exynos/
exynos_hdmi.c:2374 hdmi_probe() error: potential NULL
dereference 'hdata->hdmiphy_port'.

Added check for hdata->hdmiphy_port that it is not NULL.
Signed-off-by: NPaul Taysom <taysom@chromium.org>
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch debounces hotplug interrupts generated by the HDMI hotplug
gpio. The reason this is needed is that we get multiple (5) interrupts
every time a monitor is inserted which causes us to needlessly enable
and disable the IP block.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch removes the hdmiphy reset in hdmi_poweroff. The hdmiphy reset
was added to take advantage of exynos clockgating, doing it would gate
the entire TV domain. Unfortunately, mixer is included in the TV domain
and its vsync interrupts are stopped when TV is gated.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NRahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch updates phy settings of the below
mentioned pixel clocks in Exynos5250 and removes
support for 88.75MHz, for it is not supported.

71 MHz      - 1280x800@60Hz RB
73.25 MHz   - 800x600@120Hz RB
115.5 MHz   - 1024x768@120Hz RB
119 MHz     - 1680x1050@60Hz RB
Signed-off-by: NShirish S <s.shirish@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch adds component framework support to resolve
the probe order issue.

Until now, exynos drm had used codes specific to exynos drm
to resolve that issue so with this patch, the specific codes
are removed.
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Make local symbols static, because these are used only in this
file.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch changes i2c_client for ddc to i2c_adapter
because ddc needs only i2c_adapter.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

This patch returns error in case of using APB PHY.

Exynos5420 SoC and maybe later would use APB PHY instead of
I2C PHY so such case should be considered.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

This patch implements drm_connector in the hdmi driver directly, instead
of using exynos_drm_connector.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch removes all of the suspend/resume logic from the individual
drivers and consolidates it in drm_drv. This consolidation reduces the
number of functions which enable/disable the hardware to just one -- the
dpms callback. This ensures that we always power up/down in a consistent
manner.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch changes the manual copying of mode to adjusted_mode in
mode_fixup to use drm_mode_copy instead of handling things manually.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch trims exynos_drm_hdmi out of the driver. The reason it
existed in the first place was to make up for the mixture of
display/overlay/manager ops being spread across hdmi and mixer. With
that code now rationalized, mixer and hdmi map directly to
exynos_drm_crtc and exynos_drm_encoder, respectively. Since there is a
1:1 mapping, we no longer need this layer.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

The i2c client was previously being passed into the hdmi driver via a
dedicated i2c driver, and then a global variable. This patch removes all
of that and just uses the device tree to get the i2c_client. This patch
also properly references the client so we don't lose it before we're
done with it.
Signed-off-by: NDaniel Kurtz <djkurtz@chromium.org>
[seanpaul changed to phandle lookup instead of using of node name]
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch renames the display_op power_on to dpms to accurately reflect
what the function does.

The side-effect of this patch is that the new hdmi dpms callback is now
invoked twice in the dpms path. This is safe and will be dealt with when
the exynos_drm shim goes away.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch removes the apply() manager callback in favor of putting the
relevant commits in the individual drivers. This will mitigate some of
the difference between the suspend/resume path and the dpms path
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch implements the initialize callback in the hdmi and mixer
manager. This allows us to get rid of drm_dev in the drm_hdmi level and
track it in the mixer and hdmi drivers. This is one of the things
holding back the complete removal of the drm_hdmi layer.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Now that the drm_display_mode also provides aspect
ratio for all resolutions, this patch adds its usage
to set the active aspect ratio of AVI info frame
packets as per CEA-861-D standard's Table 9.

This is also needed to abide by the 7-27
compliance test of HDMI.
Signed-off-by: NShirish S <s.shirish@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch adds support for the below mentioned
pixel clocks in Exynos5250.
Without them, following display modes won¡¯t
be supported:

71 MHz 	- 1280x800@60Hz RB
73.25 MHz 	- 800x600@120Hz RB
88.75 MHz 	- 1440x900@60Hz RB
115.5 MHz 	- 1024x768@120Hz RB
119 MHz 	- 1680x1050@60Hz RB
Signed-off-by: NShirish S <s.shirish@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Remove local definitions and use the ones provided by hdmi.h.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Since commit 383ffda2 ("ARM: EXYNOS: no more support non-DT
for EXYNOS SoCs"), Exynos platform is DT only. Hence remove
all the conditional macros and make the driver DT only.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

kzalloc already has built-in error messages. Hence remove
additional ones.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Add of.h explicitly for of_* APIs.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Remove module.h header file inclusion from files since they do
not use/refer to any code from that file.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This patch adds new combatible strings for hdmi, mixer, ddc
and hdmiphy. It follows the convention of using compatible string
which represent the SoC in which the IP was added for the first
time.

Drivers continue to support the previous compatible strings
but further addition of these compatible strings in device tree
is deprecated.
Signed-off-by: NRahul Sharma <rahul.sharma@samsung.com>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Modified code for calculating hdmi IP register values from drm timing
values. The modification is based on the inputs from hw team and specifically
proposed for 1440x576i and 1440x480i. But same changes holds good for other
interlaced resolutions also.
Signed-off-by: NRahul Sharma <rahul.sharma@samsung.com>
Acked-by: NSeung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Cleanup by removing flags variable from drm_hdmi_dt_parse_pdata
which is not used anywhere. Swtiching to of_get_named_gpio instead
of of_get_named_gpio_flags solved this.
Signed-off-by: NRahul Sharma <rahul.sharma@samsung.com>
Acked-by: NSeung-Woo Kim <sw0312@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

HDMI driver needs to configure the mout_hdmi mux clock to change
the parent between sclk_hdmiphy and sclk_pixel.
Signed-off-by: NRahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Change the clk_enable/clk_disable calls in mixer and hdmi drivers into
clk_prepare_enable/clk_disable_unprepare, respectively.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NRahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>