diff mbox series

[13/14] drm/bridge: synopsys: Add DW HDMI QP TX controller driver

Message ID 20240601-b4-rk3588-bridge-upstream-v1-13-f6203753232b@collabora.com (mailing list archive)
State New, archived
Headers show
Series Add initial support for the Rockchip RK3588 HDMI TX Controller | expand

Commit Message

Cristian Ciocaltea June 1, 2024, 1:12 p.m. UTC
The Synopsys DesignWare HDMI 2.1 Quad-Pixel (QP) TX controller supports
the following features, among others:

* Fixed Rate Link (FRL)
* 4K@120Hz and 8K@60Hz video modes
* Variable Refresh Rate (VRR) including Quick Media Switching (QMS), aka
  Cinema VRR
* Fast Vactive (FVA), aka Quick Frame Transport (QFT)
* SCDC I2C DDC access
* TMDS Scrambler enabling 2160p@60Hz with RGB/YCbCr4:4:4
* YCbCr4:2:0 enabling 2160p@60Hz at lower HDMI link speeds
* Multi-stream audio
* Enhanced Audio Return Channel (EARC)

Add driver to enable basic support, i.e. RGB output up to 4K@60Hz,
without audio, CEC or any HDMI 2.1 specific features.

Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
 drivers/gpu/drm/bridge/synopsys/Makefile     |   2 +-
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 787 +++++++++++++++++++++++++
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h | 831 +++++++++++++++++++++++++++
 include/drm/bridge/dw_hdmi.h                 |   8 +
 4 files changed, 1627 insertions(+), 1 deletion(-)

Comments

Sam Ravnborg June 1, 2024, 2:32 p.m. UTC | #1
Hi Cristian,

a few drive-by comments below.

	Sam


> +
> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
> +	.fill_modes = drm_helper_probe_single_connector_modes,
> +	.detect = dw_hdmi_connector_detect,
> +	.destroy = drm_connector_cleanup,
> +	.force = dw_hdmi_qp_connector_force,
> +	.reset = drm_atomic_helper_connector_reset,
> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> +};
> +
> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
> +				    enum drm_bridge_attach_flags flags)
> +{
> +	struct dw_hdmi *hdmi = bridge->driver_private;
> +
> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
> +					 bridge, flags);
> +
> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
> +}

Are there any users left that requires the display driver to create the
connector?
In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
is not passed and drop dw_hdmi_connector_create()?

I did not try to verify this - just a naive question.

> +
> +static enum drm_mode_status
> +dw_hdmi_qp_bridge_mode_valid(struct drm_bridge *bridge,
> +			     const struct drm_display_info *info,
> +			     const struct drm_display_mode *mode)
> +{
> +	struct dw_hdmi *hdmi = bridge->driver_private;
> +	const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
> +	enum drm_mode_status mode_status = MODE_OK;
> +
> +	if (pdata->mode_valid)
> +		mode_status = pdata->mode_valid(hdmi, pdata->priv_data, info,
> +						mode);
> +
> +	return mode_status;
> +}
> +
> +static void dw_hdmi_qp_bridge_atomic_disable(struct drm_bridge *bridge,
> +					     struct drm_bridge_state *old_state)
> +{
> +	struct dw_hdmi *hdmi = bridge->driver_private;
> +
> +	mutex_lock(&hdmi->mutex);
> +	hdmi->disabled = true;
> +	hdmi->curr_conn = NULL;
> +	dw_hdmi_qp_update_power(hdmi);
> +	dw_handle_plugged_change(hdmi, false);
> +	mutex_unlock(&hdmi->mutex);
> +}
> +
> +static void dw_hdmi_qp_bridge_atomic_enable(struct drm_bridge *bridge,
> +					    struct drm_bridge_state *old_state)
> +{
> +	struct dw_hdmi *hdmi = bridge->driver_private;
> +	struct drm_atomic_state *state = old_state->base.state;
> +	struct drm_connector *connector;
> +
> +	connector = drm_atomic_get_new_connector_for_encoder(state,
> +							     bridge->encoder);
> +
> +	mutex_lock(&hdmi->mutex);
> +	hdmi->disabled = false;
> +	hdmi->curr_conn = connector;
> +	dw_hdmi_qp_update_power(hdmi);
> +	dw_handle_plugged_change(hdmi, true);
> +	mutex_unlock(&hdmi->mutex);
> +}
> +
> +static const struct drm_bridge_funcs dw_hdmi_qp_bridge_funcs = {
> +	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
> +	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
> +	.atomic_reset = drm_atomic_helper_bridge_reset,
> +	.attach = dw_hdmi_qp_bridge_attach,
> +	.detach = dw_hdmi_bridge_detach,
> +	.atomic_check = dw_hdmi_bridge_atomic_check,
> +	.atomic_enable = dw_hdmi_qp_bridge_atomic_enable,
> +	.atomic_disable = dw_hdmi_qp_bridge_atomic_disable,
> +	.mode_set = dw_hdmi_bridge_mode_set,

The use of mode_set is deprecated - see drm_bridge.h
Cristian Ciocaltea June 4, 2024, 7:32 p.m. UTC | #2
Hi Sam,

On 6/1/24 5:32 PM, Sam Ravnborg wrote:
> Hi Cristian,
> 
> a few drive-by comments below.
> 
> 	Sam
> 
> 
>> +
>> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
>> +	.fill_modes = drm_helper_probe_single_connector_modes,
>> +	.detect = dw_hdmi_connector_detect,
>> +	.destroy = drm_connector_cleanup,
>> +	.force = dw_hdmi_qp_connector_force,
>> +	.reset = drm_atomic_helper_connector_reset,
>> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>> +};
>> +
>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
>> +				    enum drm_bridge_attach_flags flags)
>> +{
>> +	struct dw_hdmi *hdmi = bridge->driver_private;
>> +
>> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
>> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
>> +					 bridge, flags);
>> +
>> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
>> +}
> 
> Are there any users left that requires the display driver to create the
> connector?
> In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
> is not passed and drop dw_hdmi_connector_create()?
> 
> I did not try to verify this - just a naive question.

I've just tested this and it doesn't work - dw_hdmi_connector_create()
is still needed.

Regards,
Cristian
Sam Ravnborg June 4, 2024, 8:41 p.m. UTC | #3
Hi Cristian.

On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
> Hi Sam,
> 
> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
> > Hi Cristian,
> > 
> > a few drive-by comments below.
> > 
> > 	Sam
> > 
> > 
> >> +
> >> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
> >> +	.fill_modes = drm_helper_probe_single_connector_modes,
> >> +	.detect = dw_hdmi_connector_detect,
> >> +	.destroy = drm_connector_cleanup,
> >> +	.force = dw_hdmi_qp_connector_force,
> >> +	.reset = drm_atomic_helper_connector_reset,
> >> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> >> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> >> +};
> >> +
> >> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
> >> +				    enum drm_bridge_attach_flags flags)
> >> +{
> >> +	struct dw_hdmi *hdmi = bridge->driver_private;
> >> +
> >> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
> >> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
> >> +					 bridge, flags);
> >> +
> >> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
> >> +}
> > 
> > Are there any users left that requires the display driver to create the
> > connector?
> > In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
> > is not passed and drop dw_hdmi_connector_create()?
> > 
> > I did not try to verify this - just a naive question.
> 
> I've just tested this and it doesn't work - dw_hdmi_connector_create()
> is still needed.

Hmm, seems the display driver or some other bridge driver fails to
support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
what other drivers are involved?

Note that my comments here should be seen as potential future
improvements, and do not block the patch from being used.

	Sam
Cristian Ciocaltea June 4, 2024, 9:34 p.m. UTC | #4
On 6/4/24 11:41 PM, Sam Ravnborg wrote:
> Hi Cristian.
> 
> On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
>> Hi Sam,
>>
>> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
>>> Hi Cristian,
>>>
>>> a few drive-by comments below.
>>>
>>> 	Sam
>>>
>>>
>>>> +
>>>> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
>>>> +	.fill_modes = drm_helper_probe_single_connector_modes,
>>>> +	.detect = dw_hdmi_connector_detect,
>>>> +	.destroy = drm_connector_cleanup,
>>>> +	.force = dw_hdmi_qp_connector_force,
>>>> +	.reset = drm_atomic_helper_connector_reset,
>>>> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>>>> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>>>> +};
>>>> +
>>>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
>>>> +				    enum drm_bridge_attach_flags flags)
>>>> +{
>>>> +	struct dw_hdmi *hdmi = bridge->driver_private;
>>>> +
>>>> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
>>>> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
>>>> +					 bridge, flags);
>>>> +
>>>> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
>>>> +}
>>>
>>> Are there any users left that requires the display driver to create the
>>> connector?
>>> In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
>>> is not passed and drop dw_hdmi_connector_create()?
>>>
>>> I did not try to verify this - just a naive question.
>>
>> I've just tested this and it doesn't work - dw_hdmi_connector_create()
>> is still needed.
> 
> Hmm, seems the display driver or some other bridge driver fails to
> support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
> what other drivers are involved?

Could it be related to the glue driver (updated in the next patch) which
is also responsible for setting up the encoder?

> Note that my comments here should be seen as potential future
> improvements, and do not block the patch from being used.

Thanks for the heads up! Will try to get back to this soon and investigate.

Cristian
Cristian Ciocaltea June 5, 2024, 10:11 a.m. UTC | #5
On 6/5/24 12:34 AM, Cristian Ciocaltea wrote:
> On 6/4/24 11:41 PM, Sam Ravnborg wrote:
>> Hi Cristian.
>>
>> On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
>>> Hi Sam,
>>>
>>> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
>>>> Hi Cristian,
>>>>
>>>> a few drive-by comments below.
>>>>
>>>> 	Sam
>>>>
>>>>
>>>>> +
>>>>> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
>>>>> +	.fill_modes = drm_helper_probe_single_connector_modes,
>>>>> +	.detect = dw_hdmi_connector_detect,
>>>>> +	.destroy = drm_connector_cleanup,
>>>>> +	.force = dw_hdmi_qp_connector_force,
>>>>> +	.reset = drm_atomic_helper_connector_reset,
>>>>> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>>>>> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>>>>> +};
>>>>> +
>>>>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
>>>>> +				    enum drm_bridge_attach_flags flags)
>>>>> +{
>>>>> +	struct dw_hdmi *hdmi = bridge->driver_private;
>>>>> +
>>>>> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
>>>>> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
>>>>> +					 bridge, flags);
>>>>> +
>>>>> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
>>>>> +}
>>>>
>>>> Are there any users left that requires the display driver to create the
>>>> connector?
>>>> In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
>>>> is not passed and drop dw_hdmi_connector_create()?
>>>>
>>>> I did not try to verify this - just a naive question.
>>>
>>> I've just tested this and it doesn't work - dw_hdmi_connector_create()
>>> is still needed.
>>
>> Hmm, seems the display driver or some other bridge driver fails to
>> support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
>> what other drivers are involved?
> 
> Could it be related to the glue driver (updated in the next patch) which
> is also responsible for setting up the encoder?
> 
>> Note that my comments here should be seen as potential future
>> improvements, and do not block the patch from being used.
> 
> Thanks for the heads up! Will try to get back to this soon and investigate.
 
IIUC, modern bridges should not create the connector but rely on display
drivers to take care of, which in this case is the VOP2 driver. However,
it also handles some of the older SoCs relying on the non-QP variant of
DW HDMI IP. Hence the existing dw-hdmi driver would be also impacted in
order to come up with a proper solution.

A quick check shows there are several users of this IP:

$ git grep -E '= dw_hdmi_(bind|probe)\('
drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c:    hdmi->dw_hdmi = dw_hdmi_probe(pdev, plat_data);
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, plat_data);
drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c:        hdmi->hdmi = dw_hdmi_probe(pdev, match->data);
drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);
drivers/gpu/drm/meson/meson_dw_hdmi.c:  meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
drivers/gpu/drm/renesas/rcar-du/rcar_dw_hdmi.c: hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:            hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c:  hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);

I didn't check which display drivers would be involved, I'd guess there
are quite a few of them as well. So it seems this ends up being a pretty
complex task.

Cristian
Neil Armstrong June 5, 2024, 11:48 a.m. UTC | #6
On 05/06/2024 12:11, Cristian Ciocaltea wrote:
> On 6/5/24 12:34 AM, Cristian Ciocaltea wrote:
>> On 6/4/24 11:41 PM, Sam Ravnborg wrote:
>>> Hi Cristian.
>>>
>>> On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
>>>> Hi Sam,
>>>>
>>>> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
>>>>> Hi Cristian,
>>>>>
>>>>> a few drive-by comments below.
>>>>>
>>>>> 	Sam
>>>>>
>>>>>
>>>>>> +
>>>>>> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
>>>>>> +	.fill_modes = drm_helper_probe_single_connector_modes,
>>>>>> +	.detect = dw_hdmi_connector_detect,
>>>>>> +	.destroy = drm_connector_cleanup,
>>>>>> +	.force = dw_hdmi_qp_connector_force,
>>>>>> +	.reset = drm_atomic_helper_connector_reset,
>>>>>> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>>>>>> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>>>>>> +};
>>>>>> +
>>>>>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
>>>>>> +				    enum drm_bridge_attach_flags flags)
>>>>>> +{
>>>>>> +	struct dw_hdmi *hdmi = bridge->driver_private;
>>>>>> +
>>>>>> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
>>>>>> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
>>>>>> +					 bridge, flags);
>>>>>> +
>>>>>> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
>>>>>> +}
>>>>>
>>>>> Are there any users left that requires the display driver to create the
>>>>> connector?
>>>>> In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
>>>>> is not passed and drop dw_hdmi_connector_create()?
>>>>>
>>>>> I did not try to verify this - just a naive question.
>>>>
>>>> I've just tested this and it doesn't work - dw_hdmi_connector_create()
>>>> is still needed.
>>>
>>> Hmm, seems the display driver or some other bridge driver fails to
>>> support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
>>> what other drivers are involved?
>>
>> Could it be related to the glue driver (updated in the next patch) which
>> is also responsible for setting up the encoder?
>>
>>> Note that my comments here should be seen as potential future
>>> improvements, and do not block the patch from being used.
>>
>> Thanks for the heads up! Will try to get back to this soon and investigate.
>   
> IIUC, modern bridges should not create the connector but rely on display
> drivers to take care of, which in this case is the VOP2 driver. However,
> it also handles some of the older SoCs relying on the non-QP variant of
> DW HDMI IP. Hence the existing dw-hdmi driver would be also impacted in
> order to come up with a proper solution.
> 
> A quick check shows there are several users of this IP:
> 
> $ git grep -E '= dw_hdmi_(bind|probe)\('
> drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c:    hdmi->dw_hdmi = dw_hdmi_probe(pdev, plat_data);
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, plat_data);
> drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c:        hdmi->hdmi = dw_hdmi_probe(pdev, match->data);
> drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);
> drivers/gpu/drm/meson/meson_dw_hdmi.c:  meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
> drivers/gpu/drm/renesas/rcar-du/rcar_dw_hdmi.c: hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:            hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c:  hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
> 
> I didn't check which display drivers would be involved, I'd guess there
> are quite a few of them as well. So it seems this ends up being a pretty
> complex task.

If this would be a brand new driver, then it should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR,
so you should not create a connector from the driver.

The fact dw-hdmi accepts an attach without the flag is for legacy purpose
since some DRM drivers haven't switched to DRM_BRIDGE_ATTACH_NO_CONNECTOR yes,
but it's a requirement for new bridges so at some point you'll need to make
sure the rockchip glue and drm driver supports DRM_BRIDGE_ATTACH_NO_CONNECTOR.

This will greatly simplify the driver!

Neil

> 
> Cristian
Cristian Ciocaltea June 5, 2024, 1:57 p.m. UTC | #7
On 6/5/24 2:48 PM, Neil Armstrong wrote:
> On 05/06/2024 12:11, Cristian Ciocaltea wrote:
>> On 6/5/24 12:34 AM, Cristian Ciocaltea wrote:
>>> On 6/4/24 11:41 PM, Sam Ravnborg wrote:
>>>> Hi Cristian.
>>>>
>>>> On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
>>>>> Hi Sam,
>>>>>
>>>>> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
>>>>>> Hi Cristian,
>>>>>>
>>>>>> a few drive-by comments below.
>>>>>>
>>>>>>     Sam
>>>>>>
>>>>>>
>>>>>>> +
>>>>>>> +static const struct drm_connector_funcs
>>>>>>> dw_hdmi_qp_connector_funcs = {
>>>>>>> +    .fill_modes = drm_helper_probe_single_connector_modes,
>>>>>>> +    .detect = dw_hdmi_connector_detect,
>>>>>>> +    .destroy = drm_connector_cleanup,
>>>>>>> +    .force = dw_hdmi_qp_connector_force,
>>>>>>> +    .reset = drm_atomic_helper_connector_reset,
>>>>>>> +    .atomic_duplicate_state =
>>>>>>> drm_atomic_helper_connector_duplicate_state,
>>>>>>> +    .atomic_destroy_state =
>>>>>>> drm_atomic_helper_connector_destroy_state,
>>>>>>> +};
>>>>>>> +
>>>>>>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
>>>>>>> +                    enum drm_bridge_attach_flags flags)
>>>>>>> +{
>>>>>>> +    struct dw_hdmi *hdmi = bridge->driver_private;
>>>>>>> +
>>>>>>> +    if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
>>>>>>> +        return drm_bridge_attach(bridge->encoder,
>>>>>>> hdmi->next_bridge,
>>>>>>> +                     bridge, flags);
>>>>>>> +
>>>>>>> +    return dw_hdmi_connector_create(hdmi,
>>>>>>> &dw_hdmi_qp_connector_funcs);
>>>>>>> +}
>>>>>>
>>>>>> Are there any users left that requires the display driver to
>>>>>> create the
>>>>>> connector?
>>>>>> In other words - could this driver fail if
>>>>>> DRM_BRIDGE_ATTACH_NO_CONNECTOR
>>>>>> is not passed and drop dw_hdmi_connector_create()?
>>>>>>
>>>>>> I did not try to verify this - just a naive question.
>>>>>
>>>>> I've just tested this and it doesn't work - dw_hdmi_connector_create()
>>>>> is still needed.
>>>>
>>>> Hmm, seems the display driver or some other bridge driver fails to
>>>> support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
>>>> what other drivers are involved?
>>>
>>> Could it be related to the glue driver (updated in the next patch) which
>>> is also responsible for setting up the encoder?
>>>
>>>> Note that my comments here should be seen as potential future
>>>> improvements, and do not block the patch from being used.
>>>
>>> Thanks for the heads up! Will try to get back to this soon and
>>> investigate.
>>   IIUC, modern bridges should not create the connector but rely on
>> display
>> drivers to take care of, which in this case is the VOP2 driver. However,
>> it also handles some of the older SoCs relying on the non-QP variant of
>> DW HDMI IP. Hence the existing dw-hdmi driver would be also impacted in
>> order to come up with a proper solution.
>>
>> A quick check shows there are several users of this IP:
>>
>> $ git grep -E '= dw_hdmi_(bind|probe)\('
>> drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c:    hdmi->dw_hdmi =
>> dw_hdmi_probe(pdev, plat_data);
>> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c:      hdmi =
>> dw_hdmi_probe(pdev, plat_data);
>> drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c:        hdmi->hdmi =
>> dw_hdmi_probe(pdev, match->data);
>> drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c:      hdmi =
>> dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);
>> drivers/gpu/drm/meson/meson_dw_hdmi.c:  meson_dw_hdmi->hdmi =
>> dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
>> drivers/gpu/drm/renesas/rcar-du/rcar_dw_hdmi.c: hdmi =
>> dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
>> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:            hdmi->hdmi =
>> dw_hdmi_bind(pdev, encoder, plat_data);
>> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c:  hdmi->hdmi =
>> dw_hdmi_bind(pdev, encoder, plat_data);
>>
>> I didn't check which display drivers would be involved, I'd guess there
>> are quite a few of them as well. So it seems this ends up being a pretty
>> complex task.
> 
> If this would be a brand new driver, then it should only support
> DRM_BRIDGE_ATTACH_NO_CONNECTOR,
> so you should not create a connector from the driver.
> 
> The fact dw-hdmi accepts an attach without the flag is for legacy purpose
> since some DRM drivers haven't switched to
> DRM_BRIDGE_ATTACH_NO_CONNECTOR yes,
> but it's a requirement for new bridges so at some point you'll need to make
> sure the rockchip glue and drm driver supports
> DRM_BRIDGE_ATTACH_NO_CONNECTOR.
> 
> This will greatly simplify the driver!

Got it, thanks for the clarifications!

Cristian
Heiko Stübner June 5, 2024, 2:48 p.m. UTC | #8
Am Samstag, 1. Juni 2024, 15:12:35 CEST schrieb Cristian Ciocaltea:
> The Synopsys DesignWare HDMI 2.1 Quad-Pixel (QP) TX controller supports
> the following features, among others:
> 
> * Fixed Rate Link (FRL)
> * 4K@120Hz and 8K@60Hz video modes
> * Variable Refresh Rate (VRR) including Quick Media Switching (QMS), aka
>   Cinema VRR
> * Fast Vactive (FVA), aka Quick Frame Transport (QFT)
> * SCDC I2C DDC access
> * TMDS Scrambler enabling 2160p@60Hz with RGB/YCbCr4:4:4
> * YCbCr4:2:0 enabling 2160p@60Hz at lower HDMI link speeds
> * Multi-stream audio
> * Enhanced Audio Return Channel (EARC)
> 
> Add driver to enable basic support, i.e. RGB output up to 4K@60Hz,
> without audio, CEC or any HDMI 2.1 specific features.
> 
> Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
> Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
> ---
>  drivers/gpu/drm/bridge/synopsys/Makefile     |   2 +-
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 787 +++++++++++++++++++++++++
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h | 831 +++++++++++++++++++++++++++
>  include/drm/bridge/dw_hdmi.h                 |   8 +
>  4 files changed, 1627 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/bridge/synopsys/Makefile b/drivers/gpu/drm/bridge/synopsys/Makefile
> index ce715562e9e5..8354e4879f70 100644
> --- a/drivers/gpu/drm/bridge/synopsys/Makefile
> +++ b/drivers/gpu/drm/bridge/synopsys/Makefile

> +static int dw_hdmi_qp_i2c_read(struct dw_hdmi *hdmi,
> +			       unsigned char *buf, unsigned int length)
> +{
> +	struct dw_hdmi_i2c *i2c = hdmi->i2c;
> +	int stat;
> +
> +	if (!i2c->is_regaddr) {
> +		dev_dbg(hdmi->dev, "set read register address to 0\n");
> +		i2c->slave_reg = 0x00;
> +		i2c->is_regaddr = true;
> +	}
> +
> +	while (length--) {
> +		reinit_completion(&i2c->cmp);
> +
> +		dw_hdmi_qp_mod(hdmi, i2c->slave_reg++ << 12, I2CM_ADDR,
> +			       I2CM_INTERFACE_CONTROL0);
> +
> +		dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
> +			       I2CM_INTERFACE_CONTROL0);

Somehow the segment handling is present in the rest of the i2c code here, but
not the actual handling for reads.

The vendor-kernel does:

-               dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
-                              I2CM_INTERFACE_CONTROL0);
+               if (i2c->is_segment)
+                       dw_hdmi_qp_mod(hdmi, I2CM_EXT_READ, I2CM_WR_MASK,
+                                      I2CM_INTERFACE_CONTROL0);
+               else
+                       dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
+                                      I2CM_INTERFACE_CONTROL0);

Without this change, connecting to a DVI display does not work, and
reading the EDID ends in the "i2c read error" below.

Adding the segment handling as above makes the DVI connection
work (as it does in the vendor-kernel).

So it would be nice if you could maybe incorporate this in the next version?


Thanks
Heiko


> +
> +		stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
> +		if (!stat) {
> +			dev_err(hdmi->dev, "i2c read timed out\n");
> +			dw_hdmi_qp_write(hdmi, 0x01, I2CM_CONTROL0);
> +			return -EAGAIN;
> +		}
> +
> +		/* Check for error condition on the bus */
> +		if (i2c->stat & I2CM_NACK_RCVD_IRQ) {
> +			dev_err(hdmi->dev, "i2c read error\n");
> +			dw_hdmi_qp_write(hdmi, 0x01, I2CM_CONTROL0);
> +			return -EIO;
> +		}
> +
> +		*buf++ = dw_hdmi_qp_read(hdmi, I2CM_INTERFACE_RDDATA_0_3) & 0xff;
> +		dw_hdmi_qp_mod(hdmi, 0, I2CM_WR_MASK, I2CM_INTERFACE_CONTROL0);
> +	}
> +
> +	i2c->is_segment = false;
> +
> +	return 0;
> +}
Luis de Arquer June 5, 2024, 7:58 p.m. UTC | #9
On 6/5/24 16:48, Heiko Stübner wrote:
> Without this change, connecting to a DVI display does not work, and
> reading the EDID ends in the "i2c read error" below.

I had a lot of problems initially with the vendor driver on my DVI 
display, and am aware that several changes were required.

However, I tested Cristian patch and worked fine. All modes were 
apparently detected from the display and they all worked. But maybe I 
was just lucky and it was using a somehow cached table, I can't say.

This is an AOC DVI display from 2011 with a passive adapter.



Luis
Heiko Stübner June 5, 2024, 10:16 p.m. UTC | #10
Am Mittwoch, 5. Juni 2024, 21:58:23 CEST schrieb Luis de Arquer:
> On 6/5/24 16:48, Heiko Stübner wrote:
> > Without this change, connecting to a DVI display does not work, and
> > reading the EDID ends in the "i2c read error" below.
> 
> I had a lot of problems initially with the vendor driver on my DVI 
> display, and am aware that several changes were required.
> 
> However, I tested Cristian patch and worked fine. All modes were 
> apparently detected from the display and they all worked. But maybe I 
> was just lucky and it was using a somehow cached table, I can't say.
> 
> This is an AOC DVI display from 2011 with a passive adapter.

For me it is an LG IPS235. On its native hdmi input I always get regular
1080p output. But on its DVI input I always ran into the i2c read error
before adding that change.

I guess I should determine which reads actually fail.
Cristian Ciocaltea June 6, 2024, 9:53 a.m. UTC | #11
On 6/5/24 5:48 PM, Heiko Stübner wrote:
> Am Samstag, 1. Juni 2024, 15:12:35 CEST schrieb Cristian Ciocaltea:
>> The Synopsys DesignWare HDMI 2.1 Quad-Pixel (QP) TX controller supports
>> the following features, among others:
>>
>> * Fixed Rate Link (FRL)
>> * 4K@120Hz and 8K@60Hz video modes
>> * Variable Refresh Rate (VRR) including Quick Media Switching (QMS), aka
>>   Cinema VRR
>> * Fast Vactive (FVA), aka Quick Frame Transport (QFT)
>> * SCDC I2C DDC access
>> * TMDS Scrambler enabling 2160p@60Hz with RGB/YCbCr4:4:4
>> * YCbCr4:2:0 enabling 2160p@60Hz at lower HDMI link speeds
>> * Multi-stream audio
>> * Enhanced Audio Return Channel (EARC)
>>
>> Add driver to enable basic support, i.e. RGB output up to 4K@60Hz,
>> without audio, CEC or any HDMI 2.1 specific features.
>>
>> Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
>> Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
>> ---
>>  drivers/gpu/drm/bridge/synopsys/Makefile     |   2 +-
>>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 787 +++++++++++++++++++++++++
>>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h | 831 +++++++++++++++++++++++++++
>>  include/drm/bridge/dw_hdmi.h                 |   8 +
>>  4 files changed, 1627 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/bridge/synopsys/Makefile b/drivers/gpu/drm/bridge/synopsys/Makefile
>> index ce715562e9e5..8354e4879f70 100644
>> --- a/drivers/gpu/drm/bridge/synopsys/Makefile
>> +++ b/drivers/gpu/drm/bridge/synopsys/Makefile
> 
>> +static int dw_hdmi_qp_i2c_read(struct dw_hdmi *hdmi,
>> +			       unsigned char *buf, unsigned int length)
>> +{
>> +	struct dw_hdmi_i2c *i2c = hdmi->i2c;
>> +	int stat;
>> +
>> +	if (!i2c->is_regaddr) {
>> +		dev_dbg(hdmi->dev, "set read register address to 0\n");
>> +		i2c->slave_reg = 0x00;
>> +		i2c->is_regaddr = true;
>> +	}
>> +
>> +	while (length--) {
>> +		reinit_completion(&i2c->cmp);
>> +
>> +		dw_hdmi_qp_mod(hdmi, i2c->slave_reg++ << 12, I2CM_ADDR,
>> +			       I2CM_INTERFACE_CONTROL0);
>> +
>> +		dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
>> +			       I2CM_INTERFACE_CONTROL0);
> 
> Somehow the segment handling is present in the rest of the i2c code here, but
> not the actual handling for reads.
> 
> The vendor-kernel does:
> 
> -               dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
> -                              I2CM_INTERFACE_CONTROL0);
> +               if (i2c->is_segment)
> +                       dw_hdmi_qp_mod(hdmi, I2CM_EXT_READ, I2CM_WR_MASK,
> +                                      I2CM_INTERFACE_CONTROL0);
> +               else
> +                       dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
> +                                      I2CM_INTERFACE_CONTROL0);

Hmm, for some reason this is not present in the stable-5.10-rock5 branch 
I've been using as an implementation reference:

https://github.com/radxa/kernel/blob/stable-5.10-rock5/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c#L760

Is there an updated fork?

> Without this change, connecting to a DVI display does not work, and
> reading the EDID ends in the "i2c read error" below.
> 
> Adding the segment handling as above makes the DVI connection
> work (as it does in the vendor-kernel).
> 
> So it would be nice if you could maybe incorporate this in the next version?

Sure, thanks for pointing this out!

Cristian
Heiko Stübner June 6, 2024, 10:16 a.m. UTC | #12
Am Donnerstag, 6. Juni 2024, 11:53:23 CEST schrieb Cristian Ciocaltea:
> On 6/5/24 5:48 PM, Heiko Stübner wrote:
> > Am Samstag, 1. Juni 2024, 15:12:35 CEST schrieb Cristian Ciocaltea:
> >> The Synopsys DesignWare HDMI 2.1 Quad-Pixel (QP) TX controller supports
> >> the following features, among others:
> >>
> >> * Fixed Rate Link (FRL)
> >> * 4K@120Hz and 8K@60Hz video modes
> >> * Variable Refresh Rate (VRR) including Quick Media Switching (QMS), aka
> >>   Cinema VRR
> >> * Fast Vactive (FVA), aka Quick Frame Transport (QFT)
> >> * SCDC I2C DDC access
> >> * TMDS Scrambler enabling 2160p@60Hz with RGB/YCbCr4:4:4
> >> * YCbCr4:2:0 enabling 2160p@60Hz at lower HDMI link speeds
> >> * Multi-stream audio
> >> * Enhanced Audio Return Channel (EARC)
> >>
> >> Add driver to enable basic support, i.e. RGB output up to 4K@60Hz,
> >> without audio, CEC or any HDMI 2.1 specific features.
> >>
> >> Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
> >> Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
> >> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
> >> ---
> >>  drivers/gpu/drm/bridge/synopsys/Makefile     |   2 +-
> >>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 787 +++++++++++++++++++++++++
> >>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h | 831 +++++++++++++++++++++++++++
> >>  include/drm/bridge/dw_hdmi.h                 |   8 +
> >>  4 files changed, 1627 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/gpu/drm/bridge/synopsys/Makefile b/drivers/gpu/drm/bridge/synopsys/Makefile
> >> index ce715562e9e5..8354e4879f70 100644
> >> --- a/drivers/gpu/drm/bridge/synopsys/Makefile
> >> +++ b/drivers/gpu/drm/bridge/synopsys/Makefile
> > 
> >> +static int dw_hdmi_qp_i2c_read(struct dw_hdmi *hdmi,
> >> +			       unsigned char *buf, unsigned int length)
> >> +{
> >> +	struct dw_hdmi_i2c *i2c = hdmi->i2c;
> >> +	int stat;
> >> +
> >> +	if (!i2c->is_regaddr) {
> >> +		dev_dbg(hdmi->dev, "set read register address to 0\n");
> >> +		i2c->slave_reg = 0x00;
> >> +		i2c->is_regaddr = true;
> >> +	}
> >> +
> >> +	while (length--) {
> >> +		reinit_completion(&i2c->cmp);
> >> +
> >> +		dw_hdmi_qp_mod(hdmi, i2c->slave_reg++ << 12, I2CM_ADDR,
> >> +			       I2CM_INTERFACE_CONTROL0);
> >> +
> >> +		dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
> >> +			       I2CM_INTERFACE_CONTROL0);
> > 
> > Somehow the segment handling is present in the rest of the i2c code here, but
> > not the actual handling for reads.
> > 
> > The vendor-kernel does:
> > 
> > -               dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
> > -                              I2CM_INTERFACE_CONTROL0);
> > +               if (i2c->is_segment)
> > +                       dw_hdmi_qp_mod(hdmi, I2CM_EXT_READ, I2CM_WR_MASK,
> > +                                      I2CM_INTERFACE_CONTROL0);
> > +               else
> > +                       dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
> > +                                      I2CM_INTERFACE_CONTROL0);
> 
> Hmm, for some reason this is not present in the stable-5.10-rock5 branch 
> I've been using as an implementation reference:
> 
> https://github.com/radxa/kernel/blob/stable-5.10-rock5/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c#L760
> 
> Is there an updated fork?

I think the radxa code-base is quite old in terms of sdk-version it's based on.
Grabbing a 6.1 branch from Radxa shows it in:
https://github.com/radxa/kernel/blob/linux-6.1-stan-rkr1/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c#L995

> > Without this change, connecting to a DVI display does not work, and
> > reading the EDID ends in the "i2c read error" below.
> > 
> > Adding the segment handling as above makes the DVI connection
> > work (as it does in the vendor-kernel).
> > 
> > So it would be nice if you could maybe incorporate this in the next version?
> 
> Sure, thanks for pointing this out!
> 
> Cristian
>
Cristian Ciocaltea June 6, 2024, 11:32 a.m. UTC | #13
On 6/6/24 1:16 PM, Heiko Stübner wrote:
> Am Donnerstag, 6. Juni 2024, 11:53:23 CEST schrieb Cristian Ciocaltea:
>> On 6/5/24 5:48 PM, Heiko Stübner wrote:
>>> Am Samstag, 1. Juni 2024, 15:12:35 CEST schrieb Cristian Ciocaltea:
>>>> The Synopsys DesignWare HDMI 2.1 Quad-Pixel (QP) TX controller supports
>>>> the following features, among others:
>>>>
>>>> * Fixed Rate Link (FRL)
>>>> * 4K@120Hz and 8K@60Hz video modes
>>>> * Variable Refresh Rate (VRR) including Quick Media Switching (QMS), aka
>>>>   Cinema VRR
>>>> * Fast Vactive (FVA), aka Quick Frame Transport (QFT)
>>>> * SCDC I2C DDC access
>>>> * TMDS Scrambler enabling 2160p@60Hz with RGB/YCbCr4:4:4
>>>> * YCbCr4:2:0 enabling 2160p@60Hz at lower HDMI link speeds
>>>> * Multi-stream audio
>>>> * Enhanced Audio Return Channel (EARC)
>>>>
>>>> Add driver to enable basic support, i.e. RGB output up to 4K@60Hz,
>>>> without audio, CEC or any HDMI 2.1 specific features.
>>>>
>>>> Co-developed-by: Algea Cao <algea.cao@rock-chips.com>
>>>> Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
>>>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
>>>> ---
>>>>  drivers/gpu/drm/bridge/synopsys/Makefile     |   2 +-
>>>>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 787 +++++++++++++++++++++++++
>>>>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h | 831 +++++++++++++++++++++++++++
>>>>  include/drm/bridge/dw_hdmi.h                 |   8 +
>>>>  4 files changed, 1627 insertions(+), 1 deletion(-)
>>>>
>>>> diff --git a/drivers/gpu/drm/bridge/synopsys/Makefile b/drivers/gpu/drm/bridge/synopsys/Makefile
>>>> index ce715562e9e5..8354e4879f70 100644
>>>> --- a/drivers/gpu/drm/bridge/synopsys/Makefile
>>>> +++ b/drivers/gpu/drm/bridge/synopsys/Makefile
>>>
>>>> +static int dw_hdmi_qp_i2c_read(struct dw_hdmi *hdmi,
>>>> +			       unsigned char *buf, unsigned int length)
>>>> +{
>>>> +	struct dw_hdmi_i2c *i2c = hdmi->i2c;
>>>> +	int stat;
>>>> +
>>>> +	if (!i2c->is_regaddr) {
>>>> +		dev_dbg(hdmi->dev, "set read register address to 0\n");
>>>> +		i2c->slave_reg = 0x00;
>>>> +		i2c->is_regaddr = true;
>>>> +	}
>>>> +
>>>> +	while (length--) {
>>>> +		reinit_completion(&i2c->cmp);
>>>> +
>>>> +		dw_hdmi_qp_mod(hdmi, i2c->slave_reg++ << 12, I2CM_ADDR,
>>>> +			       I2CM_INTERFACE_CONTROL0);
>>>> +
>>>> +		dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
>>>> +			       I2CM_INTERFACE_CONTROL0);
>>>
>>> Somehow the segment handling is present in the rest of the i2c code here, but
>>> not the actual handling for reads.
>>>
>>> The vendor-kernel does:
>>>
>>> -               dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
>>> -                              I2CM_INTERFACE_CONTROL0);
>>> +               if (i2c->is_segment)
>>> +                       dw_hdmi_qp_mod(hdmi, I2CM_EXT_READ, I2CM_WR_MASK,
>>> +                                      I2CM_INTERFACE_CONTROL0);
>>> +               else
>>> +                       dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
>>> +                                      I2CM_INTERFACE_CONTROL0);
>>
>> Hmm, for some reason this is not present in the stable-5.10-rock5 branch 
>> I've been using as an implementation reference:
>>
>> https://github.com/radxa/kernel/blob/stable-5.10-rock5/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c#L760
>>
>> Is there an updated fork?
> 
> I think the radxa code-base is quite old in terms of sdk-version it's based on.
> Grabbing a 6.1 branch from Radxa shows it in:
> https://github.com/radxa/kernel/blob/linux-6.1-stan-rkr1/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c#L995

Indeed, I should have switched to using this one as it seems to include 
quite a few potentially interesting updates (will check in detail for v2).

For now, we miss cdc0984c90dc ("drm/bridge: synopsys: dw-hdmi-qp: Support 
read ext block edid"), which provides an additional change:

@@ -1086,7 +1090,7 @@ static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap,
                        i2c->is_segment = true;
                        hdmi_modb(hdmi, DDC_SEGMENT_ADDR, I2CM_SEG_ADDR,
                                  I2CM_INTERFACE_CONTROL1);
-                       hdmi_modb(hdmi, *msgs[i].buf, I2CM_SEG_PTR,
+                       hdmi_modb(hdmi, *msgs[i].buf << 7, I2CM_SEG_PTR,
                                  I2CM_INTERFACE_CONTROL1);
                } else {
                        if (msgs[i].flags & I2C_M_RD)

Will try to grab some more displays to improve testing on my end.

Thanks,
Cristian
Andy Yan June 14, 2024, 6:56 a.m. UTC | #14
Hi Neil,

At 2024-06-05 19:48:09, "Neil Armstrong" <neil.armstrong@linaro.org> wrote:
>On 05/06/2024 12:11, Cristian Ciocaltea wrote:
>> On 6/5/24 12:34 AM, Cristian Ciocaltea wrote:
>>> On 6/4/24 11:41 PM, Sam Ravnborg wrote:
>>>> Hi Cristian.
>>>>
>>>> On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
>>>>> Hi Sam,
>>>>>
>>>>> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
>>>>>> Hi Cristian,
>>>>>>
>>>>>> a few drive-by comments below.
>>>>>>
>>>>>> 	Sam
>>>>>>
>>>>>>
>>>>>>> +
>>>>>>> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
>>>>>>> +	.fill_modes = drm_helper_probe_single_connector_modes,
>>>>>>> +	.detect = dw_hdmi_connector_detect,
>>>>>>> +	.destroy = drm_connector_cleanup,
>>>>>>> +	.force = dw_hdmi_qp_connector_force,
>>>>>>> +	.reset = drm_atomic_helper_connector_reset,
>>>>>>> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>>>>>>> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>>>>>>> +};
>>>>>>> +
>>>>>>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
>>>>>>> +				    enum drm_bridge_attach_flags flags)
>>>>>>> +{
>>>>>>> +	struct dw_hdmi *hdmi = bridge->driver_private;
>>>>>>> +
>>>>>>> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
>>>>>>> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
>>>>>>> +					 bridge, flags);
>>>>>>> +
>>>>>>> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
>>>>>>> +}
>>>>>>
>>>>>> Are there any users left that requires the display driver to create the
>>>>>> connector?
>>>>>> In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
>>>>>> is not passed and drop dw_hdmi_connector_create()?
>>>>>>
>>>>>> I did not try to verify this - just a naive question.
>>>>>
>>>>> I've just tested this and it doesn't work - dw_hdmi_connector_create()
>>>>> is still needed.
>>>>
>>>> Hmm, seems the display driver or some other bridge driver fails to
>>>> support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
>>>> what other drivers are involved?
>>>
>>> Could it be related to the glue driver (updated in the next patch) which
>>> is also responsible for setting up the encoder?
>>>
>>>> Note that my comments here should be seen as potential future
>>>> improvements, and do not block the patch from being used.
>>>
>>> Thanks for the heads up! Will try to get back to this soon and investigate.
>>   
>> IIUC, modern bridges should not create the connector but rely on display
>> drivers to take care of, which in this case is the VOP2 driver. However,
>> it also handles some of the older SoCs relying on the non-QP variant of
>> DW HDMI IP. Hence the existing dw-hdmi driver would be also impacted in
>> order to come up with a proper solution.
>> 
>> A quick check shows there are several users of this IP:
>> 
>> $ git grep -E '= dw_hdmi_(bind|probe)\('
>> drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c:    hdmi->dw_hdmi = dw_hdmi_probe(pdev, plat_data);
>> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, plat_data);
>> drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c:        hdmi->hdmi = dw_hdmi_probe(pdev, match->data);
>> drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);
>> drivers/gpu/drm/meson/meson_dw_hdmi.c:  meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
>> drivers/gpu/drm/renesas/rcar-du/rcar_dw_hdmi.c: hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
>> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:            hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
>> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c:  hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
>> 
>> I didn't check which display drivers would be involved, I'd guess there
>> are quite a few of them as well. So it seems this ends up being a pretty
>> complex task.
>
>If this would be a brand new driver, then it should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR,
>so you should not create a connector from the driver.
>
>The fact dw-hdmi accepts an attach without the flag is for legacy purpose
>since some DRM drivers haven't switched to DRM_BRIDGE_ATTACH_NO_CONNECTOR yes,
>but it's a requirement for new bridges so at some point you'll need to make
>sure the rockchip glue and drm driver supports DRM_BRIDGE_ATTACH_NO_CONNECTOR.
>
>This will greatly simplify the driver!

Based on the previous discussion, the DW HDMI QP drivers will be implemented like this:

Core bridge library: 
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
Rockchip platform specific glue:
drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c

As a new bridge driver should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR, 
Is it acceptable if we implement the connector at  the rockchip glue dw_hdmi_qp-rockchip.c ?

Our current combination is a bit complex:
The display controller driver is  drivers/gpu/drm/rockchip/rockchip_drm_vop2.c ,which shared
by rk3568, rk3588 and some upcoming soc like rk3528/rk3562.

For rk3588, we have totally new HDMI、DP、DSI2  IP, they need brand new bridge driver that
should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR, and there is also an eDP on rk3588
use analogix_dp_core.c that create connector by analogix_dp bridge。

For  rk3568, the HDMI/eDP/DSI IP are based on old IP, the corresponding drivers are dw-hdmi,analogix_dp
and dw-mipi-dsi, they both create drm connector by it's bridge driver. And rk3528/rk3562 are like this too。

So if we can create drm_connector at glue side (such as dw_hdmi_qp-rockchip.c), let the interface driver decide
if it should create drm_connector or not will make the vop2 driver simpler。





>
>Neil
>
>> 
>> Cristian
Maxime Ripard June 14, 2024, 8:34 a.m. UTC | #15
Hi,

On Fri, Jun 14, 2024 at 02:56:00PM GMT, Andy Yan wrote:
> At 2024-06-05 19:48:09, "Neil Armstrong" <neil.armstrong@linaro.org> wrote:
> >On 05/06/2024 12:11, Cristian Ciocaltea wrote:
> >> On 6/5/24 12:34 AM, Cristian Ciocaltea wrote:
> >>> On 6/4/24 11:41 PM, Sam Ravnborg wrote:
> >>>> Hi Cristian.
> >>>>
> >>>> On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
> >>>>> Hi Sam,
> >>>>>
> >>>>> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
> >>>>>> Hi Cristian,
> >>>>>>
> >>>>>> a few drive-by comments below.
> >>>>>>
> >>>>>> 	Sam
> >>>>>>
> >>>>>>
> >>>>>>> +
> >>>>>>> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
> >>>>>>> +	.fill_modes = drm_helper_probe_single_connector_modes,
> >>>>>>> +	.detect = dw_hdmi_connector_detect,
> >>>>>>> +	.destroy = drm_connector_cleanup,
> >>>>>>> +	.force = dw_hdmi_qp_connector_force,
> >>>>>>> +	.reset = drm_atomic_helper_connector_reset,
> >>>>>>> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> >>>>>>> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> >>>>>>> +};
> >>>>>>> +
> >>>>>>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
> >>>>>>> +				    enum drm_bridge_attach_flags flags)
> >>>>>>> +{
> >>>>>>> +	struct dw_hdmi *hdmi = bridge->driver_private;
> >>>>>>> +
> >>>>>>> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
> >>>>>>> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
> >>>>>>> +					 bridge, flags);
> >>>>>>> +
> >>>>>>> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
> >>>>>>> +}
> >>>>>>
> >>>>>> Are there any users left that requires the display driver to create the
> >>>>>> connector?
> >>>>>> In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
> >>>>>> is not passed and drop dw_hdmi_connector_create()?
> >>>>>>
> >>>>>> I did not try to verify this - just a naive question.
> >>>>>
> >>>>> I've just tested this and it doesn't work - dw_hdmi_connector_create()
> >>>>> is still needed.
> >>>>
> >>>> Hmm, seems the display driver or some other bridge driver fails to
> >>>> support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
> >>>> what other drivers are involved?
> >>>
> >>> Could it be related to the glue driver (updated in the next patch) which
> >>> is also responsible for setting up the encoder?
> >>>
> >>>> Note that my comments here should be seen as potential future
> >>>> improvements, and do not block the patch from being used.
> >>>
> >>> Thanks for the heads up! Will try to get back to this soon and investigate.
> >>   
> >> IIUC, modern bridges should not create the connector but rely on display
> >> drivers to take care of, which in this case is the VOP2 driver. However,
> >> it also handles some of the older SoCs relying on the non-QP variant of
> >> DW HDMI IP. Hence the existing dw-hdmi driver would be also impacted in
> >> order to come up with a proper solution.
> >> 
> >> A quick check shows there are several users of this IP:
> >> 
> >> $ git grep -E '= dw_hdmi_(bind|probe)\('
> >> drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c:    hdmi->dw_hdmi = dw_hdmi_probe(pdev, plat_data);
> >> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, plat_data);
> >> drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c:        hdmi->hdmi = dw_hdmi_probe(pdev, match->data);
> >> drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);
> >> drivers/gpu/drm/meson/meson_dw_hdmi.c:  meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
> >> drivers/gpu/drm/renesas/rcar-du/rcar_dw_hdmi.c: hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
> >> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:            hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
> >> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c:  hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
> >> 
> >> I didn't check which display drivers would be involved, I'd guess there
> >> are quite a few of them as well. So it seems this ends up being a pretty
> >> complex task.
> >
> >If this would be a brand new driver, then it should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR,
> >so you should not create a connector from the driver.
> >
> >The fact dw-hdmi accepts an attach without the flag is for legacy purpose
> >since some DRM drivers haven't switched to DRM_BRIDGE_ATTACH_NO_CONNECTOR yes,
> >but it's a requirement for new bridges so at some point you'll need to make
> >sure the rockchip glue and drm driver supports DRM_BRIDGE_ATTACH_NO_CONNECTOR.
> >
> >This will greatly simplify the driver!
> 
> Based on the previous discussion, the DW HDMI QP drivers will be implemented like this:
> 
> Core bridge library: 
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
> Rockchip platform specific glue:
> drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c

Note that the bridge HDMI helpers Dmitry was mentioning have now been
merged, so I'd expect the core bridge library to be fairly minimal. And
the new driver should obviously use it as much as it can.

Maxime
Neil Armstrong June 14, 2024, 8:39 a.m. UTC | #16
On 14/06/2024 08:56, Andy Yan wrote:
> 
> 
> 
> 
> 
> 
> 
> Hi Neil,
> 
> At 2024-06-05 19:48:09, "Neil Armstrong" <neil.armstrong@linaro.org> wrote:
>> On 05/06/2024 12:11, Cristian Ciocaltea wrote:
>>> On 6/5/24 12:34 AM, Cristian Ciocaltea wrote:
>>>> On 6/4/24 11:41 PM, Sam Ravnborg wrote:
>>>>> Hi Cristian.
>>>>>
>>>>> On Tue, Jun 04, 2024 at 10:32:04PM +0300, Cristian Ciocaltea wrote:
>>>>>> Hi Sam,
>>>>>>
>>>>>> On 6/1/24 5:32 PM, Sam Ravnborg wrote:
>>>>>>> Hi Cristian,
>>>>>>>
>>>>>>> a few drive-by comments below.
>>>>>>>
>>>>>>> 	Sam
>>>>>>>
>>>>>>>
>>>>>>>> +
>>>>>>>> +static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
>>>>>>>> +	.fill_modes = drm_helper_probe_single_connector_modes,
>>>>>>>> +	.detect = dw_hdmi_connector_detect,
>>>>>>>> +	.destroy = drm_connector_cleanup,
>>>>>>>> +	.force = dw_hdmi_qp_connector_force,
>>>>>>>> +	.reset = drm_atomic_helper_connector_reset,
>>>>>>>> +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>>>>>>>> +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>>>>>>>> +};
>>>>>>>> +
>>>>>>>> +static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
>>>>>>>> +				    enum drm_bridge_attach_flags flags)
>>>>>>>> +{
>>>>>>>> +	struct dw_hdmi *hdmi = bridge->driver_private;
>>>>>>>> +
>>>>>>>> +	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
>>>>>>>> +		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
>>>>>>>> +					 bridge, flags);
>>>>>>>> +
>>>>>>>> +	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
>>>>>>>> +}
>>>>>>>
>>>>>>> Are there any users left that requires the display driver to create the
>>>>>>> connector?
>>>>>>> In other words - could this driver fail if DRM_BRIDGE_ATTACH_NO_CONNECTOR
>>>>>>> is not passed and drop dw_hdmi_connector_create()?
>>>>>>>
>>>>>>> I did not try to verify this - just a naive question.
>>>>>>
>>>>>> I've just tested this and it doesn't work - dw_hdmi_connector_create()
>>>>>> is still needed.
>>>>>
>>>>> Hmm, seems the display driver or some other bridge driver fails to
>>>>> support "DRM_BRIDGE_ATTACH_NO_CONNECTOR".
>>>>> what other drivers are involved?
>>>>
>>>> Could it be related to the glue driver (updated in the next patch) which
>>>> is also responsible for setting up the encoder?
>>>>
>>>>> Note that my comments here should be seen as potential future
>>>>> improvements, and do not block the patch from being used.
>>>>
>>>> Thanks for the heads up! Will try to get back to this soon and investigate.
>>>    
>>> IIUC, modern bridges should not create the connector but rely on display
>>> drivers to take care of, which in this case is the VOP2 driver. However,
>>> it also handles some of the older SoCs relying on the non-QP variant of
>>> DW HDMI IP. Hence the existing dw-hdmi driver would be also impacted in
>>> order to come up with a proper solution.
>>>
>>> A quick check shows there are several users of this IP:
>>>
>>> $ git grep -E '= dw_hdmi_(bind|probe)\('
>>> drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c:    hdmi->dw_hdmi = dw_hdmi_probe(pdev, plat_data);
>>> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, plat_data);
>>> drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c:        hdmi->hdmi = dw_hdmi_probe(pdev, match->data);
>>> drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c:      hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);
>>> drivers/gpu/drm/meson/meson_dw_hdmi.c:  meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
>>> drivers/gpu/drm/renesas/rcar-du/rcar_dw_hdmi.c: hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
>>> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:            hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
>>> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c:  hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
>>>
>>> I didn't check which display drivers would be involved, I'd guess there
>>> are quite a few of them as well. So it seems this ends up being a pretty
>>> complex task.
>>
>> If this would be a brand new driver, then it should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR,
>> so you should not create a connector from the driver.
>>
>> The fact dw-hdmi accepts an attach without the flag is for legacy purpose
>> since some DRM drivers haven't switched to DRM_BRIDGE_ATTACH_NO_CONNECTOR yes,
>> but it's a requirement for new bridges so at some point you'll need to make
>> sure the rockchip glue and drm driver supports DRM_BRIDGE_ATTACH_NO_CONNECTOR.
>>
>> This will greatly simplify the driver!
> 
> Based on the previous discussion, the DW HDMI QP drivers will be implemented like this:
> 
> Core bridge library:
>   drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
> Rockchip platform specific glue:
> drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
> 
> As a new bridge driver should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR,
> Is it acceptable if we implement the connector at  the rockchip glue dw_hdmi_qp-rockchip.c ?
> 
> Our current combination is a bit complex:
> The display controller driver is  drivers/gpu/drm/rockchip/rockchip_drm_vop2.c ,which shared
> by rk3568, rk3588 and some upcoming soc like rk3528/rk3562.
> 
> For rk3588, we have totally new HDMI、DP、DSI2  IP, they need brand new bridge driver that
> should only support DRM_BRIDGE_ATTACH_NO_CONNECTOR, and there is also an eDP on rk3588
> use analogix_dp_core.c that create connector by analogix_dp bridge。
> 
> For  rk3568, the HDMI/eDP/DSI IP are based on old IP, the corresponding drivers are dw-hdmi,analogix_dp
> and dw-mipi-dsi, they both create drm connector by it's bridge driver. And rk3528/rk3562 are like this too。
> 
> So if we can create drm_connector at glue side (such as dw_hdmi_qp-rockchip.c), let the interface driver decide
> if it should create drm_connector or not will make the vop2 driver simpler。

I think you should start migration to drm_bridge_connector instead of hacking dw_hdmi_qp-rockchip.c into
fitting into DRM_BRIDGE_ATTACH_NO_CONNECTOR.

You'll add technical dept, and the migration will be even harder afterwards.

But in any case, bridge/synopsys/dw-hdmi-qp.c and rockchip/dw_hdmi_qp-rockchip.c should be send
in two separate patchsets, so how rockchip DRM_BRIDGE_ATTACH_NO_CONNECTOR is a different story.

Neil

> 
> 
> 
> 
> 
>>
>> Neil
>>
>>>
>>> Cristian
diff mbox series

Patch

diff --git a/drivers/gpu/drm/bridge/synopsys/Makefile b/drivers/gpu/drm/bridge/synopsys/Makefile
index ce715562e9e5..8354e4879f70 100644
--- a/drivers/gpu/drm/bridge/synopsys/Makefile
+++ b/drivers/gpu/drm/bridge/synopsys/Makefile
@@ -1,5 +1,5 @@ 
 # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o
+obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o dw-hdmi-qp.o
 obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o
 obj-$(CONFIG_DRM_DW_HDMI_GP_AUDIO) += dw-hdmi-gp-audio.o
 obj-$(CONFIG_DRM_DW_HDMI_I2S_AUDIO) += dw-hdmi-i2s-audio.o
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
new file mode 100644
index 000000000000..0ff7c2e259f5
--- /dev/null
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
@@ -0,0 +1,787 @@ 
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2021-2022 Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2024 Collabora Ltd.
+ *
+ * Author: Algea Cao <algea.cao@rock-chips.com>
+ * Author: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
+ */
+#include <linux/hdmi.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_scdc_helper.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_probe_helper.h>
+
+#include "dw-hdmi-common.h"
+#include "dw-hdmi-qp.h"
+
+static void dw_hdmi_qp_write(struct dw_hdmi *hdmi, unsigned int val, int offset)
+{
+	regmap_write(hdmi->regm, offset, val);
+}
+
+static unsigned int dw_hdmi_qp_read(struct dw_hdmi *hdmi, int offset)
+{
+	unsigned int val = 0;
+
+	regmap_read(hdmi->regm, offset, &val);
+
+	return val;
+}
+
+static void dw_hdmi_qp_mod(struct dw_hdmi *hdmi, unsigned int data,
+			   unsigned int mask, unsigned int reg)
+{
+	regmap_update_bits(hdmi->regm, reg, mask, data);
+}
+
+static void dw_hdmi_qp_i2c_init(struct dw_hdmi *hdmi)
+{
+	/* Software reset */
+	dw_hdmi_qp_write(hdmi, 0x01, I2CM_CONTROL0);
+
+	dw_hdmi_qp_write(hdmi, 0x085c085c, I2CM_FM_SCL_CONFIG0);
+
+	dw_hdmi_qp_mod(hdmi, 0, I2CM_FM_EN, I2CM_INTERFACE_CONTROL0);
+
+	/* Clear DONE and ERROR interrupts */
+	dw_hdmi_qp_write(hdmi, I2CM_OP_DONE_CLEAR | I2CM_NACK_RCVD_CLEAR,
+			 MAINUNIT_1_INT_CLEAR);
+}
+
+static int dw_hdmi_qp_i2c_read(struct dw_hdmi *hdmi,
+			       unsigned char *buf, unsigned int length)
+{
+	struct dw_hdmi_i2c *i2c = hdmi->i2c;
+	int stat;
+
+	if (!i2c->is_regaddr) {
+		dev_dbg(hdmi->dev, "set read register address to 0\n");
+		i2c->slave_reg = 0x00;
+		i2c->is_regaddr = true;
+	}
+
+	while (length--) {
+		reinit_completion(&i2c->cmp);
+
+		dw_hdmi_qp_mod(hdmi, i2c->slave_reg++ << 12, I2CM_ADDR,
+			       I2CM_INTERFACE_CONTROL0);
+
+		dw_hdmi_qp_mod(hdmi, I2CM_FM_READ, I2CM_WR_MASK,
+			       I2CM_INTERFACE_CONTROL0);
+
+		stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
+		if (!stat) {
+			dev_err(hdmi->dev, "i2c read timed out\n");
+			dw_hdmi_qp_write(hdmi, 0x01, I2CM_CONTROL0);
+			return -EAGAIN;
+		}
+
+		/* Check for error condition on the bus */
+		if (i2c->stat & I2CM_NACK_RCVD_IRQ) {
+			dev_err(hdmi->dev, "i2c read error\n");
+			dw_hdmi_qp_write(hdmi, 0x01, I2CM_CONTROL0);
+			return -EIO;
+		}
+
+		*buf++ = dw_hdmi_qp_read(hdmi, I2CM_INTERFACE_RDDATA_0_3) & 0xff;
+		dw_hdmi_qp_mod(hdmi, 0, I2CM_WR_MASK, I2CM_INTERFACE_CONTROL0);
+	}
+
+	i2c->is_segment = false;
+
+	return 0;
+}
+
+static int dw_hdmi_qp_i2c_write(struct dw_hdmi *hdmi,
+				unsigned char *buf, unsigned int length)
+{
+	struct dw_hdmi_i2c *i2c = hdmi->i2c;
+	int stat;
+
+	if (!i2c->is_regaddr) {
+		/* Use the first write byte as register address */
+		i2c->slave_reg = buf[0];
+		length--;
+		buf++;
+		i2c->is_regaddr = true;
+	}
+
+	while (length--) {
+		reinit_completion(&i2c->cmp);
+
+		dw_hdmi_qp_write(hdmi, *buf++, I2CM_INTERFACE_WRDATA_0_3);
+		dw_hdmi_qp_mod(hdmi, i2c->slave_reg++ << 12, I2CM_ADDR,
+			       I2CM_INTERFACE_CONTROL0);
+		dw_hdmi_qp_mod(hdmi, I2CM_FM_WRITE, I2CM_WR_MASK,
+			       I2CM_INTERFACE_CONTROL0);
+
+		stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
+		if (!stat) {
+			dev_err(hdmi->dev, "i2c write time out!\n");
+			dw_hdmi_qp_write(hdmi, 0x01, I2CM_CONTROL0);
+			return -EAGAIN;
+		}
+
+		/* Check for error condition on the bus */
+		if (i2c->stat & I2CM_NACK_RCVD_IRQ) {
+			dev_err(hdmi->dev, "i2c write nack!\n");
+			dw_hdmi_qp_write(hdmi, 0x01, I2CM_CONTROL0);
+			return -EIO;
+		}
+
+		dw_hdmi_qp_mod(hdmi, 0, I2CM_WR_MASK, I2CM_INTERFACE_CONTROL0);
+	}
+
+	return 0;
+}
+
+static int dw_hdmi_qp_i2c_xfer(struct i2c_adapter *adap,
+			       struct i2c_msg *msgs, int num)
+{
+	struct dw_hdmi *hdmi = i2c_get_adapdata(adap);
+	struct dw_hdmi_i2c *i2c = hdmi->i2c;
+	u8 addr = msgs[0].addr;
+	int i, ret = 0;
+
+	if (addr == DDC_CI_ADDR)
+		/*
+		 * The internal I2C controller does not support the multi-byte
+		 * read and write operations needed for DDC/CI.
+		 * TOFIX: Blacklist the DDC/CI address until we filter out
+		 * unsupported I2C operations.
+		 */
+		return -EOPNOTSUPP;
+
+	for (i = 0; i < num; i++) {
+		if (msgs[i].len == 0) {
+			dev_err(hdmi->dev,
+				"unsupported transfer %d/%d, no data\n",
+				i + 1, num);
+			return -EOPNOTSUPP;
+		}
+	}
+
+	mutex_lock(&i2c->lock);
+
+	/* Unmute DONE and ERROR interrupts */
+	dw_hdmi_qp_mod(hdmi, I2CM_NACK_RCVD_MASK_N | I2CM_OP_DONE_MASK_N,
+		       I2CM_NACK_RCVD_MASK_N | I2CM_OP_DONE_MASK_N,
+		       MAINUNIT_1_INT_MASK_N);
+
+	/* Set slave device address taken from the first I2C message */
+	if (addr == DDC_SEGMENT_ADDR && msgs[0].len == 1)
+		addr = DDC_ADDR;
+
+	dw_hdmi_qp_mod(hdmi, addr << 5, I2CM_SLVADDR, I2CM_INTERFACE_CONTROL0);
+
+	/* Set slave device register address on transfer */
+	i2c->is_regaddr = false;
+
+	/* Set segment pointer for I2C extended read mode operation */
+	i2c->is_segment = false;
+
+	for (i = 0; i < num; i++) {
+		if (msgs[i].addr == DDC_SEGMENT_ADDR && msgs[i].len == 1) {
+			i2c->is_segment = true;
+			dw_hdmi_qp_mod(hdmi, DDC_SEGMENT_ADDR, I2CM_SEG_ADDR,
+				       I2CM_INTERFACE_CONTROL1);
+			dw_hdmi_qp_mod(hdmi, *msgs[i].buf, I2CM_SEG_PTR,
+				       I2CM_INTERFACE_CONTROL1);
+		} else {
+			if (msgs[i].flags & I2C_M_RD)
+				ret = dw_hdmi_qp_i2c_read(hdmi, msgs[i].buf,
+							  msgs[i].len);
+			else
+				ret = dw_hdmi_qp_i2c_write(hdmi, msgs[i].buf,
+							   msgs[i].len);
+		}
+		if (ret < 0)
+			break;
+	}
+
+	if (!ret)
+		ret = num;
+
+	/* Mute DONE and ERROR interrupts */
+	dw_hdmi_qp_mod(hdmi, 0, I2CM_OP_DONE_MASK_N | I2CM_NACK_RCVD_MASK_N,
+		       MAINUNIT_1_INT_MASK_N);
+
+	mutex_unlock(&i2c->lock);
+
+	return ret;
+}
+
+static u32 dw_hdmi_qp_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm dw_hdmi_algorithm = {
+	.master_xfer	= dw_hdmi_qp_i2c_xfer,
+	.functionality	= dw_hdmi_qp_i2c_func,
+};
+
+static void hdmi_infoframe_set_checksum(u8 *ptr, int size)
+{
+	u8 csum = 0;
+	int i;
+
+	ptr[3] = 0;
+	/* compute checksum */
+	for (i = 0; i < size; i++)
+		csum += ptr[i];
+
+	ptr[3] = 256 - csum;
+}
+
+static void hdmi_config_AVI(struct dw_hdmi *hdmi,
+			    const struct drm_connector *connector,
+			    const struct drm_display_mode *mode)
+{
+	struct hdmi_avi_infoframe frame;
+	u32 val, i, j;
+	u8 buf[17];
+
+	dw_hdmi_prep_avi_infoframe(&frame, hdmi, connector, mode);
+
+	frame.scan_mode = HDMI_SCAN_MODE_NONE;
+	frame.video_code = hdmi->vic;
+
+	hdmi_avi_infoframe_pack_only(&frame, buf, 17);
+
+	/* mode which vic >= 128 must use avi version 3 */
+	if (hdmi->vic >= 128) {
+		frame.version = 3;
+		buf[1] = frame.version;
+		buf[4] &= 0x1f;
+		buf[4] |= ((frame.colorspace & 0x7) << 5);
+		buf[7] = frame.video_code;
+		hdmi_infoframe_set_checksum(buf, 17);
+	}
+
+	/*
+	 * The Designware IP uses a different byte format from standard
+	 * AVI info frames, though generally the bits are in the correct
+	 * bytes.
+	 */
+
+	val = (frame.version << 8) | (frame.length << 16);
+	dw_hdmi_qp_write(hdmi, val, PKT_AVI_CONTENTS0);
+
+	for (i = 0; i < 4; i++) {
+		for (j = 0; j < 4; j++) {
+			if (i * 4 + j >= 14)
+				break;
+			if (!j)
+				val = buf[i * 4 + j + 3];
+			val |= buf[i * 4 + j + 3] << (8 * j);
+		}
+
+		dw_hdmi_qp_write(hdmi, val, PKT_AVI_CONTENTS1 + i * 4);
+	}
+
+	dw_hdmi_qp_mod(hdmi, 0, PKTSCHED_AVI_FIELDRATE, PKTSCHED_PKT_CONFIG1);
+
+	dw_hdmi_qp_mod(hdmi, PKTSCHED_AVI_TX_EN | PKTSCHED_GCP_TX_EN,
+		       PKTSCHED_AVI_TX_EN | PKTSCHED_GCP_TX_EN, PKTSCHED_PKT_EN);
+}
+
+static void hdmi_config_drm_infoframe(struct dw_hdmi *hdmi,
+				      const struct drm_connector *connector)
+{
+	const struct drm_connector_state *conn_state = connector->state;
+	struct hdr_output_metadata *hdr_metadata;
+	struct hdmi_drm_infoframe frame;
+	u8 buffer[30];
+	ssize_t err;
+	int i;
+	u32 val;
+
+	if (!hdmi->plat_data->use_drm_infoframe)
+		return;
+
+	dw_hdmi_qp_mod(hdmi, 0, PKTSCHED_DRMI_TX_EN, PKTSCHED_PKT_EN);
+
+	if (!hdmi->connector.hdr_sink_metadata.hdmi_type1.eotf) {
+		dev_dbg(hdmi->dev, "No need to set HDR metadata in infoframe\n");
+		return;
+	}
+
+	if (!conn_state->hdr_output_metadata) {
+		dev_dbg(hdmi->dev, "source metadata not set yet\n");
+		return;
+	}
+
+	hdr_metadata = (struct hdr_output_metadata *)
+		conn_state->hdr_output_metadata->data;
+
+	if (!(hdmi->connector.hdr_sink_metadata.hdmi_type1.eotf &
+	      BIT(hdr_metadata->hdmi_metadata_type1.eotf))) {
+		dev_err(hdmi->dev, "EOTF %d not supported\n",
+			hdr_metadata->hdmi_metadata_type1.eotf);
+		return;
+	}
+
+	err = drm_hdmi_infoframe_set_hdr_metadata(&frame, conn_state);
+	if (err < 0)
+		return;
+
+	err = hdmi_drm_infoframe_pack(&frame, buffer, sizeof(buffer));
+	if (err < 0) {
+		dev_err(hdmi->dev, "Failed to pack drm infoframe: %zd\n", err);
+		return;
+	}
+
+	val = (frame.version << 8) | (frame.length << 16);
+	dw_hdmi_qp_write(hdmi, val, PKT_DRMI_CONTENTS0);
+
+	for (i = 0; i <= frame.length; i++) {
+		if (i % 4 == 0)
+			val = buffer[3 + i];
+		val |= buffer[3 + i] << ((i % 4) * 8);
+
+		if ((i % 4 == 3) || i == frame.length)
+			dw_hdmi_qp_write(hdmi, val,
+					 PKT_DRMI_CONTENTS1 + ((i / 4) * 4));
+	}
+
+	dw_hdmi_qp_mod(hdmi, 0, PKTSCHED_DRMI_FIELDRATE, PKTSCHED_PKT_CONFIG1);
+	dw_hdmi_qp_mod(hdmi, PKTSCHED_DRMI_TX_EN, PKTSCHED_DRMI_TX_EN,
+		       PKTSCHED_PKT_EN);
+}
+
+static int dw_hdmi_qp_setup(struct dw_hdmi *hdmi,
+			    struct drm_connector *connector,
+			    struct drm_display_mode *mode)
+{
+	u8 bytes = 0;
+	int ret;
+
+	dw_hdmi_prep_data(hdmi, mode);
+
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
+		hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 1;
+		hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 1;
+	}
+
+	/*
+	 * According to the dw-hdmi specification 6.4.2
+	 * vp_pr_cd[3:0]:
+	 * 0000b: No pixel repetition (pixel sent only once)
+	 * 0001b: Pixel sent two times (pixel repeated once)
+	 */
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+		hdmi->hdmi_data.pix_repet_factor = 1;
+
+	/* HDMI Initialization Step B.1 */
+	dw_hdmi_prep_vmode(hdmi, mode);
+
+	/* HDMI Initialization Step B.2 */
+	ret = hdmi->phy.ops->init(hdmi, hdmi->phy.data,
+				  &connector->display_info,
+				  &hdmi->previous_mode);
+	if (ret)
+		return ret;
+	hdmi->phy.enabled = true;
+
+	/* not for DVI mode */
+	if (hdmi->sink_is_hdmi) {
+		dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__);
+
+		dw_hdmi_qp_mod(hdmi, 0, OPMODE_DVI, LINK_CONFIG0);
+		dw_hdmi_qp_mod(hdmi, HDCP2_BYPASS, HDCP2_BYPASS, HDCP2LOGIC_CONFIG0);
+
+		if (hdmi->hdmi_data.video_mode.mtmdsclock > HDMI14_MAX_TMDSCLK) {
+			if (dw_hdmi_support_scdc(hdmi, &connector->display_info)) {
+				drm_scdc_readb(hdmi->ddc, SCDC_SINK_VERSION, &bytes);
+				drm_scdc_writeb(hdmi->ddc, SCDC_SOURCE_VERSION,
+						min_t(u8, bytes, SCDC_MIN_SOURCE_VERSION));
+				drm_scdc_set_high_tmds_clock_ratio(connector, 1);
+				drm_scdc_set_scrambling(connector, 1);
+			}
+			dw_hdmi_qp_write(hdmi, 1, SCRAMB_CONFIG0);
+		} else {
+			if (dw_hdmi_support_scdc(hdmi, &connector->display_info)) {
+				drm_scdc_set_high_tmds_clock_ratio(connector, 0);
+				drm_scdc_set_scrambling(connector, 0);
+			}
+			dw_hdmi_qp_write(hdmi, 0, SCRAMB_CONFIG0);
+		}
+
+		/* HDMI Initialization Step F */
+		hdmi_config_AVI(hdmi, connector, mode);
+		hdmi_config_drm_infoframe(hdmi, connector);
+	} else {
+		dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
+
+		dw_hdmi_qp_mod(hdmi, HDCP2_BYPASS, HDCP2_BYPASS, HDCP2LOGIC_CONFIG0);
+		dw_hdmi_qp_mod(hdmi, OPMODE_DVI, OPMODE_DVI, LINK_CONFIG0);
+	}
+
+	return 0;
+}
+
+static void dw_hdmi_qp_update_power(struct dw_hdmi *hdmi)
+{
+	int force = hdmi->force;
+
+	if (hdmi->disabled) {
+		force = DRM_FORCE_OFF;
+	} else if (force == DRM_FORCE_UNSPECIFIED) {
+		if (hdmi->rxsense)
+			force = DRM_FORCE_ON;
+		else
+			force = DRM_FORCE_OFF;
+	}
+
+	if (force == DRM_FORCE_OFF) {
+		if (hdmi->bridge_is_on) {
+			if (hdmi->phy.enabled) {
+				hdmi->phy.ops->disable(hdmi, hdmi->phy.data);
+				hdmi->phy.enabled = false;
+			}
+
+			hdmi->bridge_is_on = false;
+		}
+	} else {
+		if (!hdmi->bridge_is_on) {
+			hdmi->bridge_is_on = true;
+
+			/*
+			 * The curr_conn field is guaranteed to be valid here, as this function
+			 * is only be called when !hdmi->disabled.
+			 */
+			dw_hdmi_qp_setup(hdmi, hdmi->curr_conn, &hdmi->previous_mode);
+		}
+	}
+}
+
+static void dw_hdmi_qp_connector_force(struct drm_connector *connector)
+{
+	struct dw_hdmi *hdmi =
+		container_of(connector, struct dw_hdmi, connector);
+
+	mutex_lock(&hdmi->mutex);
+	hdmi->force = connector->force;
+	dw_hdmi_qp_update_power(hdmi);
+	mutex_unlock(&hdmi->mutex);
+}
+
+static const struct drm_connector_funcs dw_hdmi_qp_connector_funcs = {
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.detect = dw_hdmi_connector_detect,
+	.destroy = drm_connector_cleanup,
+	.force = dw_hdmi_qp_connector_force,
+	.reset = drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int dw_hdmi_qp_bridge_attach(struct drm_bridge *bridge,
+				    enum drm_bridge_attach_flags flags)
+{
+	struct dw_hdmi *hdmi = bridge->driver_private;
+
+	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
+		return drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
+					 bridge, flags);
+
+	return dw_hdmi_connector_create(hdmi, &dw_hdmi_qp_connector_funcs);
+}
+
+static enum drm_mode_status
+dw_hdmi_qp_bridge_mode_valid(struct drm_bridge *bridge,
+			     const struct drm_display_info *info,
+			     const struct drm_display_mode *mode)
+{
+	struct dw_hdmi *hdmi = bridge->driver_private;
+	const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
+	enum drm_mode_status mode_status = MODE_OK;
+
+	if (pdata->mode_valid)
+		mode_status = pdata->mode_valid(hdmi, pdata->priv_data, info,
+						mode);
+
+	return mode_status;
+}
+
+static void dw_hdmi_qp_bridge_atomic_disable(struct drm_bridge *bridge,
+					     struct drm_bridge_state *old_state)
+{
+	struct dw_hdmi *hdmi = bridge->driver_private;
+
+	mutex_lock(&hdmi->mutex);
+	hdmi->disabled = true;
+	hdmi->curr_conn = NULL;
+	dw_hdmi_qp_update_power(hdmi);
+	dw_handle_plugged_change(hdmi, false);
+	mutex_unlock(&hdmi->mutex);
+}
+
+static void dw_hdmi_qp_bridge_atomic_enable(struct drm_bridge *bridge,
+					    struct drm_bridge_state *old_state)
+{
+	struct dw_hdmi *hdmi = bridge->driver_private;
+	struct drm_atomic_state *state = old_state->base.state;
+	struct drm_connector *connector;
+
+	connector = drm_atomic_get_new_connector_for_encoder(state,
+							     bridge->encoder);
+
+	mutex_lock(&hdmi->mutex);
+	hdmi->disabled = false;
+	hdmi->curr_conn = connector;
+	dw_hdmi_qp_update_power(hdmi);
+	dw_handle_plugged_change(hdmi, true);
+	mutex_unlock(&hdmi->mutex);
+}
+
+static const struct drm_bridge_funcs dw_hdmi_qp_bridge_funcs = {
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
+	.attach = dw_hdmi_qp_bridge_attach,
+	.detach = dw_hdmi_bridge_detach,
+	.atomic_check = dw_hdmi_bridge_atomic_check,
+	.atomic_enable = dw_hdmi_qp_bridge_atomic_enable,
+	.atomic_disable = dw_hdmi_qp_bridge_atomic_disable,
+	.mode_set = dw_hdmi_bridge_mode_set,
+	.mode_valid = dw_hdmi_qp_bridge_mode_valid,
+	.detect = dw_hdmi_bridge_detect,
+	.edid_read = dw_hdmi_bridge_edid_read,
+};
+
+static irqreturn_t dw_hdmi_qp_main_hardirq(int irq, void *dev_id)
+{
+	struct dw_hdmi *hdmi = dev_id;
+	struct dw_hdmi_i2c *i2c = hdmi->i2c;
+	u32 stat;
+
+	stat = dw_hdmi_qp_read(hdmi, MAINUNIT_1_INT_STATUS);
+
+	i2c->stat = stat & (I2CM_OP_DONE_IRQ | I2CM_READ_REQUEST_IRQ |
+			    I2CM_NACK_RCVD_IRQ);
+
+	if (i2c->stat) {
+		dw_hdmi_qp_write(hdmi, i2c->stat, MAINUNIT_1_INT_CLEAR);
+		complete(&i2c->cmp);
+	}
+
+	if (stat)
+		return IRQ_HANDLED;
+
+	return IRQ_NONE;
+}
+
+static int dw_hdmi_qp_detect_phy(struct dw_hdmi *hdmi)
+{
+	if (!hdmi->plat_data->phy_force_vendor) {
+		dev_err(hdmi->dev, "Internal HDMI PHY not supported\n");
+		return -ENODEV;
+	}
+
+	/* Vendor PHYs require support from the glue layer. */
+	if (!hdmi->plat_data->phy_ops || !hdmi->plat_data->phy_name) {
+		dev_err(hdmi->dev,
+			"Vendor HDMI PHY not supported by glue layer\n");
+		return -ENODEV;
+	}
+
+	hdmi->phy.ops = hdmi->plat_data->phy_ops;
+	hdmi->phy.data = hdmi->plat_data->phy_data;
+	hdmi->phy.name = hdmi->plat_data->phy_name;
+
+	return 0;
+}
+
+static const struct regmap_config dw_hdmi_qp_regmap_config = {
+	.reg_bits	= 32,
+	.val_bits	= 32,
+	.reg_stride	= 4,
+	.max_register	= EARCRX_1_INT_FORCE,
+};
+
+static void dw_hdmi_qp_init_hw(struct dw_hdmi *hdmi)
+{
+	dw_hdmi_qp_write(hdmi, 0, MAINUNIT_0_INT_MASK_N);
+	dw_hdmi_qp_write(hdmi, 0, MAINUNIT_1_INT_MASK_N);
+	dw_hdmi_qp_write(hdmi, 428571429, TIMER_BASE_CONFIG0);
+
+	dw_hdmi_qp_i2c_init(hdmi);
+
+	if (hdmi->phy.ops->setup_hpd)
+		hdmi->phy.ops->setup_hpd(hdmi, hdmi->phy.data);
+}
+
+static struct dw_hdmi *
+dw_hdmi_qp_probe(struct platform_device *pdev,
+		 const struct dw_hdmi_plat_data *plat_data)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *ddc_node;
+	struct dw_hdmi *hdmi;
+	struct resource *iores = NULL;
+	int irq, ret;
+
+	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
+	if (!hdmi)
+		return ERR_PTR(-ENOMEM);
+
+	hdmi->plat_data = plat_data;
+	hdmi->dev = dev;
+	hdmi->disabled = true;
+	hdmi->rxsense = true;
+	hdmi->last_connector_result = connector_status_disconnected;
+
+	mutex_init(&hdmi->mutex);
+	mutex_init(&hdmi->audio_mutex);
+	mutex_init(&hdmi->cec_notifier_mutex);
+	spin_lock_init(&hdmi->audio_lock);
+
+	ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
+	if (ddc_node) {
+		hdmi->ddc = of_get_i2c_adapter_by_node(ddc_node);
+		of_node_put(ddc_node);
+		if (!hdmi->ddc) {
+			dev_dbg(hdmi->dev, "failed to read ddc node\n");
+			return ERR_PTR(-EPROBE_DEFER);
+		}
+
+	} else {
+		dev_dbg(hdmi->dev, "no ddc property found\n");
+	}
+
+	if (!plat_data->regm) {
+		const struct regmap_config *reg_config;
+
+		reg_config = &dw_hdmi_qp_regmap_config;
+
+		iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		hdmi->regs = devm_ioremap_resource(dev, iores);
+		if (IS_ERR(hdmi->regs)) {
+			ret = PTR_ERR(hdmi->regs);
+			goto err_put;
+		}
+
+		hdmi->regm = devm_regmap_init_mmio(dev, hdmi->regs, reg_config);
+		if (IS_ERR(hdmi->regm)) {
+			dev_err(dev, "Failed to configure regmap\n");
+			ret = PTR_ERR(hdmi->regm);
+			goto err_put;
+		}
+	} else {
+		hdmi->regm = plat_data->regm;
+	}
+
+	/* Allow SCDC advertising in dw_hdmi_support_scdc() */
+	hdmi->version = 0x200a;
+
+	ret = dw_hdmi_qp_detect_phy(hdmi);
+	if (ret < 0)
+		goto err_put;
+
+	dw_hdmi_qp_init_hw(hdmi);
+
+	if ((dw_hdmi_qp_read(hdmi, CMU_STATUS) & DISPLAY_CLK_MONITOR) ==
+			DISPLAY_CLK_LOCKED)
+		hdmi->disabled = false;
+
+	/* Not handled for now: IRQ0 (AVP), IRQ1 (CEC), IRQ2 (EARC) */
+	irq = platform_get_irq(pdev, 3);
+	if (irq < 0) {
+		ret = irq;
+		goto err_put;
+	}
+
+	ret = devm_request_threaded_irq(dev, irq,
+					dw_hdmi_qp_main_hardirq, NULL,
+					IRQF_SHARED, dev_name(dev), hdmi);
+	if (ret)
+		goto err_put;
+
+	/* If DDC bus is not specified, try to register HDMI I2C bus */
+	if (!hdmi->ddc) {
+		hdmi->ddc = dw_hdmi_i2c_adapter(hdmi, &dw_hdmi_algorithm);
+		if (IS_ERR(hdmi->ddc))
+			hdmi->ddc = NULL;
+	}
+
+	hdmi->bridge.driver_private = hdmi;
+	hdmi->bridge.funcs = &dw_hdmi_qp_bridge_funcs;
+	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
+			 | DRM_BRIDGE_OP_HPD;
+	hdmi->bridge.ddc = hdmi->ddc;
+	hdmi->bridge.of_node = pdev->dev.of_node;
+	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
+
+	drm_bridge_add(&hdmi->bridge);
+
+	return hdmi;
+
+err_put:
+	i2c_put_adapter(hdmi->ddc);
+
+	return ERR_PTR(ret);
+}
+
+static void dw_hdmi_qp_remove(struct dw_hdmi *hdmi)
+{
+	drm_bridge_remove(&hdmi->bridge);
+
+	if (hdmi->audio && !IS_ERR(hdmi->audio))
+		platform_device_unregister(hdmi->audio);
+	if (!IS_ERR(hdmi->cec))
+		platform_device_unregister(hdmi->cec);
+
+	if (hdmi->i2c)
+		i2c_del_adapter(&hdmi->i2c->adap);
+	else
+		i2c_put_adapter(hdmi->ddc);
+}
+
+struct dw_hdmi *dw_hdmi_qp_bind(struct platform_device *pdev,
+				struct drm_encoder *encoder,
+				struct dw_hdmi_plat_data *plat_data)
+{
+	struct dw_hdmi *hdmi;
+	int ret;
+
+	hdmi = dw_hdmi_qp_probe(pdev, plat_data);
+	if (IS_ERR(hdmi))
+		return hdmi;
+
+	ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0);
+	if (ret) {
+		dw_hdmi_qp_remove(hdmi);
+		return ERR_PTR(ret);
+	}
+
+	return hdmi;
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_qp_bind);
+
+void dw_hdmi_qp_unbind(struct dw_hdmi *hdmi)
+{
+	dw_hdmi_qp_remove(hdmi);
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_qp_unbind);
+
+void dw_hdmi_qp_resume(struct device *dev, struct dw_hdmi *hdmi)
+{
+	dw_hdmi_qp_init_hw(hdmi);
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_qp_resume);
+
+MODULE_AUTHOR("Algea Cao <algea.cao@rock-chips.com>");
+MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@collabora.com>");
+MODULE_DESCRIPTION("DW HDMI QP transmitter driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:dw-hdmi-qp");
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h
new file mode 100644
index 000000000000..a953cc00161d
--- /dev/null
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h
@@ -0,0 +1,831 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) Rockchip Electronics Co.Ltd
+ * Author:
+ *      Algea Cao <algea.cao@rock-chips.com>
+ */
+#ifndef __DW_HDMI_QP_H__
+#define __DW_HDMI_QP_H__
+/* Main Unit Registers */
+#define CORE_ID						0x0
+#define VER_NUMBER					0x4
+#define VER_TYPE					0x8
+#define CONFIG_REG					0xc
+#define CONFIG_CEC					BIT(28)
+#define CONFIG_AUD_UD					BIT(23)
+#define CORE_TIMESTAMP_HHMM				0x14
+#define CORE_TIMESTAMP_MMDD				0x18
+#define CORE_TIMESTAMP_YYYY				0x1c
+/* Reset Manager Registers */
+#define GLOBAL_SWRESET_REQUEST				0x40
+#define EARCRX_CMDC_SWINIT_P				BIT(27)
+#define AVP_DATAPATH_PACKET_AUDIO_SWINIT_P		BIT(10)
+#define GLOBAL_SWDISABLE				0x44
+#define CEC_SWDISABLE					BIT(17)
+#define AVP_DATAPATH_PACKET_AUDIO_SWDISABLE		BIT(10)
+#define AVP_DATAPATH_VIDEO_SWDISABLE			BIT(6)
+#define RESET_MANAGER_CONFIG0				0x48
+#define RESET_MANAGER_STATUS0				0x50
+#define RESET_MANAGER_STATUS1				0x54
+#define RESET_MANAGER_STATUS2				0x58
+/* Timer Base Registers */
+#define TIMER_BASE_CONFIG0				0x80
+#define TIMER_BASE_STATUS0				0x84
+/* CMU Registers */
+#define CMU_CONFIG0					0xa0
+#define CMU_CONFIG1					0xa4
+#define CMU_CONFIG2					0xa8
+#define CMU_CONFIG3					0xac
+#define CMU_STATUS					0xb0
+#define DISPLAY_CLK_MONITOR				0x3f
+#define DISPLAY_CLK_LOCKED				0X15
+#define EARC_BPCLK_OFF					BIT(9)
+#define AUDCLK_OFF					BIT(7)
+#define LINKQPCLK_OFF					BIT(5)
+#define VIDQPCLK_OFF					BIT(3)
+#define IPI_CLK_OFF					BIT(1)
+#define CMU_IPI_CLK_FREQ				0xb4
+#define CMU_VIDQPCLK_FREQ				0xb8
+#define CMU_LINKQPCLK_FREQ				0xbc
+#define CMU_AUDQPCLK_FREQ				0xc0
+#define CMU_EARC_BPCLK_FREQ				0xc4
+/* I2CM Registers */
+#define I2CM_SM_SCL_CONFIG0				0xe0
+#define I2CM_FM_SCL_CONFIG0				0xe4
+#define I2CM_CONFIG0					0xe8
+#define I2CM_CONTROL0					0xec
+#define I2CM_STATUS0					0xf0
+#define I2CM_INTERFACE_CONTROL0				0xf4
+#define I2CM_ADDR					0xff000
+#define I2CM_SLVADDR					0xfe0
+#define I2CM_WR_MASK					0x1e
+#define I2CM_EXT_READ					BIT(4)
+#define I2CM_SHORT_READ					BIT(3)
+#define I2CM_FM_READ					BIT(2)
+#define I2CM_FM_WRITE					BIT(1)
+#define I2CM_FM_EN					BIT(0)
+#define I2CM_INTERFACE_CONTROL1				0xf8
+#define I2CM_SEG_PTR					0x7f80
+#define I2CM_SEG_ADDR					0x7f
+#define I2CM_INTERFACE_WRDATA_0_3			0xfc
+#define I2CM_INTERFACE_WRDATA_4_7			0x100
+#define I2CM_INTERFACE_WRDATA_8_11			0x104
+#define I2CM_INTERFACE_WRDATA_12_15			0x108
+#define I2CM_INTERFACE_RDDATA_0_3			0x10c
+#define I2CM_INTERFACE_RDDATA_4_7			0x110
+#define I2CM_INTERFACE_RDDATA_8_11			0x114
+#define I2CM_INTERFACE_RDDATA_12_15			0x118
+/* SCDC Registers */
+#define SCDC_CONFIG0					0x140
+#define SCDC_I2C_FM_EN					BIT(12)
+#define SCDC_UPD_FLAGS_AUTO_CLR				BIT(6)
+#define SCDC_UPD_FLAGS_POLL_EN				BIT(4)
+#define SCDC_CONTROL0					0x148
+#define SCDC_STATUS0					0x150
+#define STATUS_UPDATE					BIT(0)
+#define FRL_START					BIT(4)
+#define FLT_UPDATE					BIT(5)
+/* FLT Registers */
+#define FLT_CONFIG0					0x160
+#define FLT_CONFIG1					0x164
+#define FLT_CONFIG2					0x168
+#define FLT_CONTROL0					0x170
+/*  Main Unit 2 Registers */
+#define MAINUNIT_STATUS0				0x180
+/* Video Interface Registers */
+#define VIDEO_INTERFACE_CONFIG0				0x800
+#define VIDEO_INTERFACE_CONFIG1				0x804
+#define VIDEO_INTERFACE_CONFIG2				0x808
+#define VIDEO_INTERFACE_CONTROL0			0x80c
+#define VIDEO_INTERFACE_STATUS0				0x814
+/* Video Packing Registers */
+#define VIDEO_PACKING_CONFIG0				0x81c
+/* Audio Interface Registers */
+#define AUDIO_INTERFACE_CONFIG0				0x820
+#define AUD_IF_SEL_MSK					0x3
+#define AUD_IF_SPDIF					0x2
+#define AUD_IF_I2S					0x1
+#define AUD_IF_PAI					0x0
+#define AUD_FIFO_INIT_ON_OVF_MSK			BIT(2)
+#define AUD_FIFO_INIT_ON_OVF_EN				BIT(2)
+#define I2S_LINES_EN_MSK				GENMASK(7, 4)
+#define I2S_LINES_EN(x)					BIT((x) + 4)
+#define I2S_BPCUV_RCV_MSK				BIT(12)
+#define I2S_BPCUV_RCV_EN				BIT(12)
+#define I2S_BPCUV_RCV_DIS				0
+#define SPDIF_LINES_EN					GENMASK(19, 16)
+#define AUD_FORMAT_MSK					GENMASK(26, 24)
+#define AUD_3DOBA					(0x7 << 24)
+#define AUD_3DASP					(0x6 << 24)
+#define AUD_MSOBA					(0x5 << 24)
+#define AUD_MSASP					(0x4 << 24)
+#define AUD_HBR						(0x3 << 24)
+#define AUD_DST						(0x2 << 24)
+#define AUD_OBA						(0x1 << 24)
+#define AUD_ASP						(0x0 << 24)
+#define AUDIO_INTERFACE_CONFIG1				0x824
+#define AUDIO_INTERFACE_CONTROL0			0x82c
+#define AUDIO_FIFO_CLR_P				BIT(0)
+#define AUDIO_INTERFACE_STATUS0				0x834
+/* Frame Composer Registers */
+#define FRAME_COMPOSER_CONFIG0				0x840
+#define FRAME_COMPOSER_CONFIG1				0x844
+#define FRAME_COMPOSER_CONFIG2				0x848
+#define FRAME_COMPOSER_CONFIG3				0x84c
+#define FRAME_COMPOSER_CONFIG4				0x850
+#define FRAME_COMPOSER_CONFIG5				0x854
+#define FRAME_COMPOSER_CONFIG6				0x858
+#define FRAME_COMPOSER_CONFIG7				0x85c
+#define FRAME_COMPOSER_CONFIG8				0x860
+#define FRAME_COMPOSER_CONFIG9				0x864
+#define FRAME_COMPOSER_CONTROL0				0x86c
+/* Video Monitor Registers */
+#define VIDEO_MONITOR_CONFIG0				0x880
+#define VIDEO_MONITOR_STATUS0				0x884
+#define VIDEO_MONITOR_STATUS1				0x888
+#define VIDEO_MONITOR_STATUS2				0x88c
+#define VIDEO_MONITOR_STATUS3				0x890
+#define VIDEO_MONITOR_STATUS4				0x894
+#define VIDEO_MONITOR_STATUS5				0x898
+#define VIDEO_MONITOR_STATUS6				0x89c
+/* HDCP2 Logic Registers */
+#define HDCP2LOGIC_CONFIG0				0x8e0
+#define HDCP2_BYPASS					BIT(0)
+#define HDCP2LOGIC_ESM_GPIO_IN				0x8e4
+#define HDCP2LOGIC_ESM_GPIO_OUT				0x8e8
+/* HDCP14 Registers */
+#define HDCP14_CONFIG0					0x900
+#define HDCP14_CONFIG1					0x904
+#define HDCP14_CONFIG2					0x908
+#define HDCP14_CONFIG3					0x90c
+#define HDCP14_KEY_SEED					0x914
+#define HDCP14_KEY_H					0x918
+#define HDCP14_KEY_L					0x91c
+#define HDCP14_KEY_STATUS				0x920
+#define HDCP14_AKSV_H					0x924
+#define HDCP14_AKSV_L					0x928
+#define HDCP14_AN_H					0x92c
+#define HDCP14_AN_L					0x930
+#define HDCP14_STATUS0					0x934
+#define HDCP14_STATUS1					0x938
+/* Scrambler Registers */
+#define SCRAMB_CONFIG0					0x960
+/* Video Configuration Registers */
+#define LINK_CONFIG0					0x968
+#define OPMODE_FRL_4LANES				BIT(8)
+#define OPMODE_DVI					BIT(4)
+#define OPMODE_FRL					BIT(0)
+/* TMDS FIFO Registers */
+#define TMDS_FIFO_CONFIG0				0x970
+#define TMDS_FIFO_CONTROL0				0x974
+/* FRL RSFEC Registers */
+#define FRL_RSFEC_CONFIG0				0xa20
+#define FRL_RSFEC_STATUS0				0xa30
+/* FRL Packetizer Registers */
+#define FRL_PKTZ_CONFIG0				0xa40
+#define FRL_PKTZ_CONTROL0				0xa44
+#define FRL_PKTZ_CONTROL1				0xa50
+#define FRL_PKTZ_STATUS1				0xa54
+/* Packet Scheduler Registers */
+#define PKTSCHED_CONFIG0				0xa80
+#define PKTSCHED_PRQUEUE0_CONFIG0			0xa84
+#define PKTSCHED_PRQUEUE1_CONFIG0			0xa88
+#define PKTSCHED_PRQUEUE2_CONFIG0			0xa8c
+#define PKTSCHED_PRQUEUE2_CONFIG1			0xa90
+#define PKTSCHED_PRQUEUE2_CONFIG2			0xa94
+#define PKTSCHED_PKT_CONFIG0				0xa98
+#define PKTSCHED_PKT_CONFIG1				0xa9c
+#define PKTSCHED_DRMI_FIELDRATE				BIT(13)
+#define PKTSCHED_AVI_FIELDRATE				BIT(12)
+#define PKTSCHED_PKT_CONFIG2				0xaa0
+#define PKTSCHED_PKT_CONFIG3				0xaa4
+#define PKTSCHED_PKT_EN					0xaa8
+#define PKTSCHED_DRMI_TX_EN				BIT(17)
+#define PKTSCHED_AUDI_TX_EN				BIT(15)
+#define PKTSCHED_AVI_TX_EN				BIT(13)
+#define PKTSCHED_EMP_CVTEM_TX_EN			BIT(10)
+#define PKTSCHED_AMD_TX_EN				BIT(8)
+#define PKTSCHED_GCP_TX_EN				BIT(3)
+#define PKTSCHED_AUDS_TX_EN				BIT(2)
+#define PKTSCHED_ACR_TX_EN				BIT(1)
+#define PKTSCHED_NULL_TX_EN				BIT(0)
+#define PKTSCHED_PKT_CONTROL0				0xaac
+#define PKTSCHED_PKT_SEND				0xab0
+#define PKTSCHED_PKT_STATUS0				0xab4
+#define PKTSCHED_PKT_STATUS1				0xab8
+#define PKT_NULL_CONTENTS0				0xb00
+#define PKT_NULL_CONTENTS1				0xb04
+#define PKT_NULL_CONTENTS2				0xb08
+#define PKT_NULL_CONTENTS3				0xb0c
+#define PKT_NULL_CONTENTS4				0xb10
+#define PKT_NULL_CONTENTS5				0xb14
+#define PKT_NULL_CONTENTS6				0xb18
+#define PKT_NULL_CONTENTS7				0xb1c
+#define PKT_ACP_CONTENTS0				0xb20
+#define PKT_ACP_CONTENTS1				0xb24
+#define PKT_ACP_CONTENTS2				0xb28
+#define PKT_ACP_CONTENTS3				0xb2c
+#define PKT_ACP_CONTENTS4				0xb30
+#define PKT_ACP_CONTENTS5				0xb34
+#define PKT_ACP_CONTENTS6				0xb38
+#define PKT_ACP_CONTENTS7				0xb3c
+#define PKT_ISRC1_CONTENTS0				0xb40
+#define PKT_ISRC1_CONTENTS1				0xb44
+#define PKT_ISRC1_CONTENTS2				0xb48
+#define PKT_ISRC1_CONTENTS3				0xb4c
+#define PKT_ISRC1_CONTENTS4				0xb50
+#define PKT_ISRC1_CONTENTS5				0xb54
+#define PKT_ISRC1_CONTENTS6				0xb58
+#define PKT_ISRC1_CONTENTS7				0xb5c
+#define PKT_ISRC2_CONTENTS0				0xb60
+#define PKT_ISRC2_CONTENTS1				0xb64
+#define PKT_ISRC2_CONTENTS2				0xb68
+#define PKT_ISRC2_CONTENTS3				0xb6c
+#define PKT_ISRC2_CONTENTS4				0xb70
+#define PKT_ISRC2_CONTENTS5				0xb74
+#define PKT_ISRC2_CONTENTS6				0xb78
+#define PKT_ISRC2_CONTENTS7				0xb7c
+#define PKT_GMD_CONTENTS0				0xb80
+#define PKT_GMD_CONTENTS1				0xb84
+#define PKT_GMD_CONTENTS2				0xb88
+#define PKT_GMD_CONTENTS3				0xb8c
+#define PKT_GMD_CONTENTS4				0xb90
+#define PKT_GMD_CONTENTS5				0xb94
+#define PKT_GMD_CONTENTS6				0xb98
+#define PKT_GMD_CONTENTS7				0xb9c
+#define PKT_AMD_CONTENTS0				0xba0
+#define PKT_AMD_CONTENTS1				0xba4
+#define PKT_AMD_CONTENTS2				0xba8
+#define PKT_AMD_CONTENTS3				0xbac
+#define PKT_AMD_CONTENTS4				0xbb0
+#define PKT_AMD_CONTENTS5				0xbb4
+#define PKT_AMD_CONTENTS6				0xbb8
+#define PKT_AMD_CONTENTS7				0xbbc
+#define PKT_VSI_CONTENTS0				0xbc0
+#define PKT_VSI_CONTENTS1				0xbc4
+#define PKT_VSI_CONTENTS2				0xbc8
+#define PKT_VSI_CONTENTS3				0xbcc
+#define PKT_VSI_CONTENTS4				0xbd0
+#define PKT_VSI_CONTENTS5				0xbd4
+#define PKT_VSI_CONTENTS6				0xbd8
+#define PKT_VSI_CONTENTS7				0xbdc
+#define PKT_AVI_CONTENTS0				0xbe0
+#define HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT	BIT(4)
+#define HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR		0x04
+#define HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR		0x08
+#define HDMI_FC_AVICONF2_IT_CONTENT_VALID		0x80
+#define PKT_AVI_CONTENTS1				0xbe4
+#define PKT_AVI_CONTENTS2				0xbe8
+#define PKT_AVI_CONTENTS3				0xbec
+#define PKT_AVI_CONTENTS4				0xbf0
+#define PKT_AVI_CONTENTS5				0xbf4
+#define PKT_AVI_CONTENTS6				0xbf8
+#define PKT_AVI_CONTENTS7				0xbfc
+#define PKT_SPDI_CONTENTS0				0xc00
+#define PKT_SPDI_CONTENTS1				0xc04
+#define PKT_SPDI_CONTENTS2				0xc08
+#define PKT_SPDI_CONTENTS3				0xc0c
+#define PKT_SPDI_CONTENTS4				0xc10
+#define PKT_SPDI_CONTENTS5				0xc14
+#define PKT_SPDI_CONTENTS6				0xc18
+#define PKT_SPDI_CONTENTS7				0xc1c
+#define PKT_AUDI_CONTENTS0				0xc20
+#define PKT_AUDI_CONTENTS1				0xc24
+#define PKT_AUDI_CONTENTS2				0xc28
+#define PKT_AUDI_CONTENTS3				0xc2c
+#define PKT_AUDI_CONTENTS4				0xc30
+#define PKT_AUDI_CONTENTS5				0xc34
+#define PKT_AUDI_CONTENTS6				0xc38
+#define PKT_AUDI_CONTENTS7				0xc3c
+#define PKT_NVI_CONTENTS0				0xc40
+#define PKT_NVI_CONTENTS1				0xc44
+#define PKT_NVI_CONTENTS2				0xc48
+#define PKT_NVI_CONTENTS3				0xc4c
+#define PKT_NVI_CONTENTS4				0xc50
+#define PKT_NVI_CONTENTS5				0xc54
+#define PKT_NVI_CONTENTS6				0xc58
+#define PKT_NVI_CONTENTS7				0xc5c
+#define PKT_DRMI_CONTENTS0				0xc60
+#define PKT_DRMI_CONTENTS1				0xc64
+#define PKT_DRMI_CONTENTS2				0xc68
+#define PKT_DRMI_CONTENTS3				0xc6c
+#define PKT_DRMI_CONTENTS4				0xc70
+#define PKT_DRMI_CONTENTS5				0xc74
+#define PKT_DRMI_CONTENTS6				0xc78
+#define PKT_DRMI_CONTENTS7				0xc7c
+#define PKT_GHDMI1_CONTENTS0				0xc80
+#define PKT_GHDMI1_CONTENTS1				0xc84
+#define PKT_GHDMI1_CONTENTS2				0xc88
+#define PKT_GHDMI1_CONTENTS3				0xc8c
+#define PKT_GHDMI1_CONTENTS4				0xc90
+#define PKT_GHDMI1_CONTENTS5				0xc94
+#define PKT_GHDMI1_CONTENTS6				0xc98
+#define PKT_GHDMI1_CONTENTS7				0xc9c
+#define PKT_GHDMI2_CONTENTS0				0xca0
+#define PKT_GHDMI2_CONTENTS1				0xca4
+#define PKT_GHDMI2_CONTENTS2				0xca8
+#define PKT_GHDMI2_CONTENTS3				0xcac
+#define PKT_GHDMI2_CONTENTS4				0xcb0
+#define PKT_GHDMI2_CONTENTS5				0xcb4
+#define PKT_GHDMI2_CONTENTS6				0xcb8
+#define PKT_GHDMI2_CONTENTS7				0xcbc
+/* EMP Packetizer Registers */
+#define PKT_EMP_CONFIG0					0xce0
+#define PKT_EMP_CONTROL0				0xcec
+#define PKT_EMP_CONTROL1				0xcf0
+#define PKT_EMP_CONTROL2				0xcf4
+#define PKT_EMP_VTEM_CONTENTS0				0xd00
+#define PKT_EMP_VTEM_CONTENTS1				0xd04
+#define PKT_EMP_VTEM_CONTENTS2				0xd08
+#define PKT_EMP_VTEM_CONTENTS3				0xd0c
+#define PKT_EMP_VTEM_CONTENTS4				0xd10
+#define PKT_EMP_VTEM_CONTENTS5				0xd14
+#define PKT_EMP_VTEM_CONTENTS6				0xd18
+#define PKT_EMP_VTEM_CONTENTS7				0xd1c
+#define PKT0_EMP_CVTEM_CONTENTS0			0xd20
+#define PKT0_EMP_CVTEM_CONTENTS1			0xd24
+#define PKT0_EMP_CVTEM_CONTENTS2			0xd28
+#define PKT0_EMP_CVTEM_CONTENTS3			0xd2c
+#define PKT0_EMP_CVTEM_CONTENTS4			0xd30
+#define PKT0_EMP_CVTEM_CONTENTS5			0xd34
+#define PKT0_EMP_CVTEM_CONTENTS6			0xd38
+#define PKT0_EMP_CVTEM_CONTENTS7			0xd3c
+#define PKT1_EMP_CVTEM_CONTENTS0			0xd40
+#define PKT1_EMP_CVTEM_CONTENTS1			0xd44
+#define PKT1_EMP_CVTEM_CONTENTS2			0xd48
+#define PKT1_EMP_CVTEM_CONTENTS3			0xd4c
+#define PKT1_EMP_CVTEM_CONTENTS4			0xd50
+#define PKT1_EMP_CVTEM_CONTENTS5			0xd54
+#define PKT1_EMP_CVTEM_CONTENTS6			0xd58
+#define PKT1_EMP_CVTEM_CONTENTS7			0xd5c
+#define PKT2_EMP_CVTEM_CONTENTS0			0xd60
+#define PKT2_EMP_CVTEM_CONTENTS1			0xd64
+#define PKT2_EMP_CVTEM_CONTENTS2			0xd68
+#define PKT2_EMP_CVTEM_CONTENTS3			0xd6c
+#define PKT2_EMP_CVTEM_CONTENTS4			0xd70
+#define PKT2_EMP_CVTEM_CONTENTS5			0xd74
+#define PKT2_EMP_CVTEM_CONTENTS6			0xd78
+#define PKT2_EMP_CVTEM_CONTENTS7			0xd7c
+#define PKT3_EMP_CVTEM_CONTENTS0			0xd80
+#define PKT3_EMP_CVTEM_CONTENTS1			0xd84
+#define PKT3_EMP_CVTEM_CONTENTS2			0xd88
+#define PKT3_EMP_CVTEM_CONTENTS3			0xd8c
+#define PKT3_EMP_CVTEM_CONTENTS4			0xd90
+#define PKT3_EMP_CVTEM_CONTENTS5			0xd94
+#define PKT3_EMP_CVTEM_CONTENTS6			0xd98
+#define PKT3_EMP_CVTEM_CONTENTS7			0xd9c
+#define PKT4_EMP_CVTEM_CONTENTS0			0xda0
+#define PKT4_EMP_CVTEM_CONTENTS1			0xda4
+#define PKT4_EMP_CVTEM_CONTENTS2			0xda8
+#define PKT4_EMP_CVTEM_CONTENTS3			0xdac
+#define PKT4_EMP_CVTEM_CONTENTS4			0xdb0
+#define PKT4_EMP_CVTEM_CONTENTS5			0xdb4
+#define PKT4_EMP_CVTEM_CONTENTS6			0xdb8
+#define PKT4_EMP_CVTEM_CONTENTS7			0xdbc
+#define PKT5_EMP_CVTEM_CONTENTS0			0xdc0
+#define PKT5_EMP_CVTEM_CONTENTS1			0xdc4
+#define PKT5_EMP_CVTEM_CONTENTS2			0xdc8
+#define PKT5_EMP_CVTEM_CONTENTS3			0xdcc
+#define PKT5_EMP_CVTEM_CONTENTS4			0xdd0
+#define PKT5_EMP_CVTEM_CONTENTS5			0xdd4
+#define PKT5_EMP_CVTEM_CONTENTS6			0xdd8
+#define PKT5_EMP_CVTEM_CONTENTS7			0xddc
+/* Audio Packetizer Registers */
+#define AUDPKT_CONTROL0					0xe20
+#define AUDPKT_PBIT_FORCE_EN_MASK			BIT(12)
+#define AUDPKT_PBIT_FORCE_EN				BIT(12)
+#define AUDPKT_CHSTATUS_OVR_EN_MASK			BIT(0)
+#define AUDPKT_CHSTATUS_OVR_EN				BIT(0)
+#define AUDPKT_CONTROL1					0xe24
+#define AUDPKT_ACR_CONTROL0				0xe40
+#define AUDPKT_ACR_N_VALUE				0xfffff
+#define AUDPKT_ACR_CONTROL1				0xe44
+#define AUDPKT_ACR_CTS_OVR_VAL_MSK			GENMASK(23, 4)
+#define AUDPKT_ACR_CTS_OVR_VAL(x)			((x) << 4)
+#define AUDPKT_ACR_CTS_OVR_EN_MSK			BIT(1)
+#define AUDPKT_ACR_CTS_OVR_EN				BIT(1)
+#define AUDPKT_ACR_STATUS0				0xe4c
+#define AUDPKT_CHSTATUS_OVR0				0xe60
+#define AUDPKT_CHSTATUS_OVR1				0xe64
+/* IEC60958 Byte 3: Sampleing frenuency Bits 24 to 27 */
+#define AUDPKT_CHSTATUS_SR_MASK				GENMASK(3, 0)
+#define AUDPKT_CHSTATUS_SR_22050			0x4
+#define AUDPKT_CHSTATUS_SR_24000			0x6
+#define AUDPKT_CHSTATUS_SR_32000			0x3
+#define AUDPKT_CHSTATUS_SR_44100			0x0
+#define AUDPKT_CHSTATUS_SR_48000			0x2
+#define AUDPKT_CHSTATUS_SR_88200			0x8
+#define AUDPKT_CHSTATUS_SR_96000			0xa
+#define AUDPKT_CHSTATUS_SR_176400			0xc
+#define AUDPKT_CHSTATUS_SR_192000			0xe
+#define AUDPKT_CHSTATUS_SR_768000			0x9
+#define AUDPKT_CHSTATUS_SR_NOT_INDICATED		0x1
+/* IEC60958 Byte 4: Original Sampleing frenuency Bits 36 to 39 */
+#define AUDPKT_CHSTATUS_0SR_MASK			GENMASK(15, 12)
+#define AUDPKT_CHSTATUS_OSR_8000			0x6
+#define AUDPKT_CHSTATUS_OSR_11025			0xa
+#define AUDPKT_CHSTATUS_OSR_12000			0x2
+#define AUDPKT_CHSTATUS_OSR_16000			0x8
+#define AUDPKT_CHSTATUS_OSR_22050			0xb
+#define AUDPKT_CHSTATUS_OSR_24000			0x9
+#define AUDPKT_CHSTATUS_OSR_32000			0xc
+#define AUDPKT_CHSTATUS_OSR_44100			0xf
+#define AUDPKT_CHSTATUS_OSR_48000			0xd
+#define AUDPKT_CHSTATUS_OSR_88200			0x7
+#define AUDPKT_CHSTATUS_OSR_96000			0x5
+#define AUDPKT_CHSTATUS_OSR_176400			0x3
+#define AUDPKT_CHSTATUS_OSR_192000			0x1
+#define AUDPKT_CHSTATUS_OSR_NOT_INDICATED		0x0
+#define AUDPKT_CHSTATUS_OVR2				0xe68
+#define AUDPKT_CHSTATUS_OVR3				0xe6c
+#define AUDPKT_CHSTATUS_OVR4				0xe70
+#define AUDPKT_CHSTATUS_OVR5				0xe74
+#define AUDPKT_CHSTATUS_OVR6				0xe78
+#define AUDPKT_CHSTATUS_OVR7				0xe7c
+#define AUDPKT_CHSTATUS_OVR8				0xe80
+#define AUDPKT_CHSTATUS_OVR9				0xe84
+#define AUDPKT_CHSTATUS_OVR10				0xe88
+#define AUDPKT_CHSTATUS_OVR11				0xe8c
+#define AUDPKT_CHSTATUS_OVR12				0xe90
+#define AUDPKT_CHSTATUS_OVR13				0xe94
+#define AUDPKT_CHSTATUS_OVR14				0xe98
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC0			0xea0
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC1			0xea4
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC2			0xea8
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC3			0xeac
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC4			0xeb0
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC5			0xeb4
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC6			0xeb8
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC7			0xebc
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC8			0xec0
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC9			0xec4
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC10		0xec8
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC11		0xecc
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC12		0xed0
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC13		0xed4
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC14		0xed8
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC15		0xedc
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC16		0xee0
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC17		0xee4
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC18		0xee8
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC19		0xeec
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC20		0xef0
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC21		0xef4
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC22		0xef8
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC23		0xefc
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC24		0xf00
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC25		0xf04
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC26		0xf08
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC27		0xf0c
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC28		0xf10
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC29		0xf14
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC30		0xf18
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC31		0xf1c
+#define AUDPKT_USRDATA_OVR_MSG_GENERIC32		0xf20
+#define AUDPKT_VBIT_OVR0				0xf24
+/* CEC Registers */
+#define CEC_TX_CONTROL					0x1000
+#define CEC_STATUS					0x1004
+#define CEC_CONFIG					0x1008
+#define CEC_ADDR					0x100c
+#define CEC_TX_COUNT					0x1020
+#define CEC_TX_DATA3_0					0x1024
+#define CEC_TX_DATA7_4					0x1028
+#define CEC_TX_DATA11_8					0x102c
+#define CEC_TX_DATA15_12				0x1030
+#define CEC_RX_COUNT_STATUS				0x1040
+#define CEC_RX_DATA3_0					0x1044
+#define CEC_RX_DATA7_4					0x1048
+#define CEC_RX_DATA11_8					0x104c
+#define CEC_RX_DATA15_12				0x1050
+#define CEC_LOCK_CONTROL				0x1054
+#define CEC_RXQUAL_BITTIME_CONFIG			0x1060
+#define CEC_RX_BITTIME_CONFIG				0x1064
+#define CEC_TX_BITTIME_CONFIG				0x1068
+/* eARC RX CMDC Registers */
+#define EARCRX_CMDC_CONFIG0				0x1800
+#define EARCRX_XACTREAD_STOP_CFG			BIT(26)
+#define EARCRX_XACTREAD_RETRY_CFG			BIT(25)
+#define EARCRX_CMDC_DSCVR_EARCVALID0_TO_DISC1		BIT(24)
+#define EARCRX_CMDC_XACT_RESTART_EN			BIT(18)
+#define EARCRX_CMDC_CONFIG1				0x1804
+#define EARCRX_CMDC_CONTROL				0x1808
+#define EARCRX_CMDC_HEARTBEAT_LOSS_EN			BIT(4)
+#define EARCRX_CMDC_DISCOVERY_EN			BIT(3)
+#define EARCRX_CONNECTOR_HPD				BIT(1)
+#define EARCRX_CMDC_WHITELIST0_CONFIG			0x180c
+#define EARCRX_CMDC_WHITELIST1_CONFIG			0x1810
+#define EARCRX_CMDC_WHITELIST2_CONFIG			0x1814
+#define EARCRX_CMDC_WHITELIST3_CONFIG			0x1818
+#define EARCRX_CMDC_STATUS				0x181c
+#define EARCRX_CMDC_XACT_INFO				0x1820
+#define EARCRX_CMDC_XACT_ACTION				0x1824
+#define EARCRX_CMDC_HEARTBEAT_RXSTAT_SE			0x1828
+#define EARCRX_CMDC_HEARTBEAT_STATUS			0x182c
+#define EARCRX_CMDC_XACT_WR0				0x1840
+#define EARCRX_CMDC_XACT_WR1				0x1844
+#define EARCRX_CMDC_XACT_WR2				0x1848
+#define EARCRX_CMDC_XACT_WR3				0x184c
+#define EARCRX_CMDC_XACT_WR4				0x1850
+#define EARCRX_CMDC_XACT_WR5				0x1854
+#define EARCRX_CMDC_XACT_WR6				0x1858
+#define EARCRX_CMDC_XACT_WR7				0x185c
+#define EARCRX_CMDC_XACT_WR8				0x1860
+#define EARCRX_CMDC_XACT_WR9				0x1864
+#define EARCRX_CMDC_XACT_WR10				0x1868
+#define EARCRX_CMDC_XACT_WR11				0x186c
+#define EARCRX_CMDC_XACT_WR12				0x1870
+#define EARCRX_CMDC_XACT_WR13				0x1874
+#define EARCRX_CMDC_XACT_WR14				0x1878
+#define EARCRX_CMDC_XACT_WR15				0x187c
+#define EARCRX_CMDC_XACT_WR16				0x1880
+#define EARCRX_CMDC_XACT_WR17				0x1884
+#define EARCRX_CMDC_XACT_WR18				0x1888
+#define EARCRX_CMDC_XACT_WR19				0x188c
+#define EARCRX_CMDC_XACT_WR20				0x1890
+#define EARCRX_CMDC_XACT_WR21				0x1894
+#define EARCRX_CMDC_XACT_WR22				0x1898
+#define EARCRX_CMDC_XACT_WR23				0x189c
+#define EARCRX_CMDC_XACT_WR24				0x18a0
+#define EARCRX_CMDC_XACT_WR25				0x18a4
+#define EARCRX_CMDC_XACT_WR26				0x18a8
+#define EARCRX_CMDC_XACT_WR27				0x18ac
+#define EARCRX_CMDC_XACT_WR28				0x18b0
+#define EARCRX_CMDC_XACT_WR29				0x18b4
+#define EARCRX_CMDC_XACT_WR30				0x18b8
+#define EARCRX_CMDC_XACT_WR31				0x18bc
+#define EARCRX_CMDC_XACT_WR32				0x18c0
+#define EARCRX_CMDC_XACT_WR33				0x18c4
+#define EARCRX_CMDC_XACT_WR34				0x18c8
+#define EARCRX_CMDC_XACT_WR35				0x18cc
+#define EARCRX_CMDC_XACT_WR36				0x18d0
+#define EARCRX_CMDC_XACT_WR37				0x18d4
+#define EARCRX_CMDC_XACT_WR38				0x18d8
+#define EARCRX_CMDC_XACT_WR39				0x18dc
+#define EARCRX_CMDC_XACT_WR40				0x18e0
+#define EARCRX_CMDC_XACT_WR41				0x18e4
+#define EARCRX_CMDC_XACT_WR42				0x18e8
+#define EARCRX_CMDC_XACT_WR43				0x18ec
+#define EARCRX_CMDC_XACT_WR44				0x18f0
+#define EARCRX_CMDC_XACT_WR45				0x18f4
+#define EARCRX_CMDC_XACT_WR46				0x18f8
+#define EARCRX_CMDC_XACT_WR47				0x18fc
+#define EARCRX_CMDC_XACT_WR48				0x1900
+#define EARCRX_CMDC_XACT_WR49				0x1904
+#define EARCRX_CMDC_XACT_WR50				0x1908
+#define EARCRX_CMDC_XACT_WR51				0x190c
+#define EARCRX_CMDC_XACT_WR52				0x1910
+#define EARCRX_CMDC_XACT_WR53				0x1914
+#define EARCRX_CMDC_XACT_WR54				0x1918
+#define EARCRX_CMDC_XACT_WR55				0x191c
+#define EARCRX_CMDC_XACT_WR56				0x1920
+#define EARCRX_CMDC_XACT_WR57				0x1924
+#define EARCRX_CMDC_XACT_WR58				0x1928
+#define EARCRX_CMDC_XACT_WR59				0x192c
+#define EARCRX_CMDC_XACT_WR60				0x1930
+#define EARCRX_CMDC_XACT_WR61				0x1934
+#define EARCRX_CMDC_XACT_WR62				0x1938
+#define EARCRX_CMDC_XACT_WR63				0x193c
+#define EARCRX_CMDC_XACT_WR64				0x1940
+#define EARCRX_CMDC_XACT_RD0				0x1960
+#define EARCRX_CMDC_XACT_RD1				0x1964
+#define EARCRX_CMDC_XACT_RD2				0x1968
+#define EARCRX_CMDC_XACT_RD3				0x196c
+#define EARCRX_CMDC_XACT_RD4				0x1970
+#define EARCRX_CMDC_XACT_RD5				0x1974
+#define EARCRX_CMDC_XACT_RD6				0x1978
+#define EARCRX_CMDC_XACT_RD7				0x197c
+#define EARCRX_CMDC_XACT_RD8				0x1980
+#define EARCRX_CMDC_XACT_RD9				0x1984
+#define EARCRX_CMDC_XACT_RD10				0x1988
+#define EARCRX_CMDC_XACT_RD11				0x198c
+#define EARCRX_CMDC_XACT_RD12				0x1990
+#define EARCRX_CMDC_XACT_RD13				0x1994
+#define EARCRX_CMDC_XACT_RD14				0x1998
+#define EARCRX_CMDC_XACT_RD15				0x199c
+#define EARCRX_CMDC_XACT_RD16				0x19a0
+#define EARCRX_CMDC_XACT_RD17				0x19a4
+#define EARCRX_CMDC_XACT_RD18				0x19a8
+#define EARCRX_CMDC_XACT_RD19				0x19ac
+#define EARCRX_CMDC_XACT_RD20				0x19b0
+#define EARCRX_CMDC_XACT_RD21				0x19b4
+#define EARCRX_CMDC_XACT_RD22				0x19b8
+#define EARCRX_CMDC_XACT_RD23				0x19bc
+#define EARCRX_CMDC_XACT_RD24				0x19c0
+#define EARCRX_CMDC_XACT_RD25				0x19c4
+#define EARCRX_CMDC_XACT_RD26				0x19c8
+#define EARCRX_CMDC_XACT_RD27				0x19cc
+#define EARCRX_CMDC_XACT_RD28				0x19d0
+#define EARCRX_CMDC_XACT_RD29				0x19d4
+#define EARCRX_CMDC_XACT_RD30				0x19d8
+#define EARCRX_CMDC_XACT_RD31				0x19dc
+#define EARCRX_CMDC_XACT_RD32				0x19e0
+#define EARCRX_CMDC_XACT_RD33				0x19e4
+#define EARCRX_CMDC_XACT_RD34				0x19e8
+#define EARCRX_CMDC_XACT_RD35				0x19ec
+#define EARCRX_CMDC_XACT_RD36				0x19f0
+#define EARCRX_CMDC_XACT_RD37				0x19f4
+#define EARCRX_CMDC_XACT_RD38				0x19f8
+#define EARCRX_CMDC_XACT_RD39				0x19fc
+#define EARCRX_CMDC_XACT_RD40				0x1a00
+#define EARCRX_CMDC_XACT_RD41				0x1a04
+#define EARCRX_CMDC_XACT_RD42				0x1a08
+#define EARCRX_CMDC_XACT_RD43				0x1a0c
+#define EARCRX_CMDC_XACT_RD44				0x1a10
+#define EARCRX_CMDC_XACT_RD45				0x1a14
+#define EARCRX_CMDC_XACT_RD46				0x1a18
+#define EARCRX_CMDC_XACT_RD47				0x1a1c
+#define EARCRX_CMDC_XACT_RD48				0x1a20
+#define EARCRX_CMDC_XACT_RD49				0x1a24
+#define EARCRX_CMDC_XACT_RD50				0x1a28
+#define EARCRX_CMDC_XACT_RD51				0x1a2c
+#define EARCRX_CMDC_XACT_RD52				0x1a30
+#define EARCRX_CMDC_XACT_RD53				0x1a34
+#define EARCRX_CMDC_XACT_RD54				0x1a38
+#define EARCRX_CMDC_XACT_RD55				0x1a3c
+#define EARCRX_CMDC_XACT_RD56				0x1a40
+#define EARCRX_CMDC_XACT_RD57				0x1a44
+#define EARCRX_CMDC_XACT_RD58				0x1a48
+#define EARCRX_CMDC_XACT_RD59				0x1a4c
+#define EARCRX_CMDC_XACT_RD60				0x1a50
+#define EARCRX_CMDC_XACT_RD61				0x1a54
+#define EARCRX_CMDC_XACT_RD62				0x1a58
+#define EARCRX_CMDC_XACT_RD63				0x1a5c
+#define EARCRX_CMDC_XACT_RD64				0x1a60
+#define EARCRX_CMDC_SYNC_CONFIG				0x1b00
+/* eARC RX DMAC Registers */
+#define EARCRX_DMAC_PHY_CONTROL				0x1c00
+#define EARCRX_DMAC_CONFIG				0x1c08
+#define EARCRX_DMAC_CONTROL0				0x1c0c
+#define EARCRX_DMAC_AUDIO_EN				BIT(1)
+#define EARCRX_DMAC_EN					BIT(0)
+#define EARCRX_DMAC_CONTROL1				0x1c10
+#define EARCRX_DMAC_STATUS				0x1c14
+#define EARCRX_DMAC_CHSTATUS0				0x1c18
+#define EARCRX_DMAC_CHSTATUS1				0x1c1c
+#define EARCRX_DMAC_CHSTATUS2				0x1c20
+#define EARCRX_DMAC_CHSTATUS3				0x1c24
+#define EARCRX_DMAC_CHSTATUS4				0x1c28
+#define EARCRX_DMAC_CHSTATUS5				0x1c2c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC0		0x1c30
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC1		0x1c34
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC2		0x1c38
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC3		0x1c3c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC4		0x1c40
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC5		0x1c44
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC6		0x1c48
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC7		0x1c4c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC8		0x1c50
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC9		0x1c54
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC10		0x1c58
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_AC11		0x1c5c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT0		0x1c60
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT1		0x1c64
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT2		0x1c68
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT3		0x1c6c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT4		0x1c70
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT5		0x1c74
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT6		0x1c78
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT7		0x1c7c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT8		0x1c80
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT9		0x1c84
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT10	0x1c88
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC1_PKT11	0x1c8c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT0		0x1c90
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT1		0x1c94
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT2		0x1c98
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT3		0x1c9c
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT4		0x1ca0
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT5		0x1ca4
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT6		0x1ca8
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT7		0x1cac
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT8		0x1cb0
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT9		0x1cb4
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT10	0x1cb8
+#define EARCRX_DMAC_USRDATA_MSG_HDMI_ISRC2_PKT11	0x1cbc
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC0		0x1cc0
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC1		0x1cc4
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC2		0x1cc8
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC3		0x1ccc
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC4		0x1cd0
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC5		0x1cd4
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC6		0x1cd8
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC7		0x1cdc
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC8		0x1ce0
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC9		0x1ce4
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC10		0x1ce8
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC11		0x1cec
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC12		0x1cf0
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC13		0x1cf4
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC14		0x1cf8
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC15		0x1cfc
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC16		0x1d00
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC17		0x1d04
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC18		0x1d08
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC19		0x1d0c
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC20		0x1d10
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC21		0x1d14
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC22		0x1d18
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC23		0x1d1c
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC24		0x1d20
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC25		0x1d24
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC26		0x1d28
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC27		0x1d2c
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC28		0x1d30
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC29		0x1d34
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC30		0x1d38
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC31		0x1d3c
+#define EARCRX_DMAC_USRDATA_MSG_GENERIC32		0x1d40
+#define EARCRX_DMAC_CHSTATUS_STREAMER0			0x1d44
+#define EARCRX_DMAC_CHSTATUS_STREAMER1			0x1d48
+#define EARCRX_DMAC_CHSTATUS_STREAMER2			0x1d4c
+#define EARCRX_DMAC_CHSTATUS_STREAMER3			0x1d50
+#define EARCRX_DMAC_CHSTATUS_STREAMER4			0x1d54
+#define EARCRX_DMAC_CHSTATUS_STREAMER5			0x1d58
+#define EARCRX_DMAC_CHSTATUS_STREAMER6			0x1d5c
+#define EARCRX_DMAC_CHSTATUS_STREAMER7			0x1d60
+#define EARCRX_DMAC_CHSTATUS_STREAMER8			0x1d64
+#define EARCRX_DMAC_CHSTATUS_STREAMER9			0x1d68
+#define EARCRX_DMAC_CHSTATUS_STREAMER10			0x1d6c
+#define EARCRX_DMAC_CHSTATUS_STREAMER11			0x1d70
+#define EARCRX_DMAC_CHSTATUS_STREAMER12			0x1d74
+#define EARCRX_DMAC_CHSTATUS_STREAMER13			0x1d78
+#define EARCRX_DMAC_CHSTATUS_STREAMER14			0x1d7c
+#define EARCRX_DMAC_USRDATA_STREAMER0			0x1d80
+/* Main Unit Interrupt Registers */
+#define MAIN_INTVEC_INDEX				0x3000
+#define MAINUNIT_0_INT_STATUS				0x3010
+#define MAINUNIT_0_INT_MASK_N				0x3014
+#define MAINUNIT_0_INT_CLEAR				0x3018
+#define MAINUNIT_0_INT_FORCE				0x301c
+#define MAINUNIT_1_INT_STATUS				0x3020
+#define FLT_EXIT_TO_LTSL_IRQ				BIT(22)
+#define FLT_EXIT_TO_LTS4_IRQ				BIT(21)
+#define FLT_EXIT_TO_LTSP_IRQ				BIT(20)
+#define SCDC_NACK_RCVD_IRQ				BIT(12)
+#define SCDC_RR_REPLY_STOP_IRQ				BIT(11)
+#define SCDC_UPD_FLAGS_CLR_IRQ				BIT(10)
+#define SCDC_UPD_FLAGS_CHG_IRQ				BIT(9)
+#define SCDC_UPD_FLAGS_RD_IRQ				BIT(8)
+#define I2CM_NACK_RCVD_IRQ				BIT(2)
+#define I2CM_READ_REQUEST_IRQ				BIT(1)
+#define I2CM_OP_DONE_IRQ				BIT(0)
+#define MAINUNIT_1_INT_MASK_N				0x3024
+#define I2CM_NACK_RCVD_MASK_N				BIT(2)
+#define I2CM_READ_REQUEST_MASK_N			BIT(1)
+#define I2CM_OP_DONE_MASK_N				BIT(0)
+#define MAINUNIT_1_INT_CLEAR				0x3028
+#define I2CM_NACK_RCVD_CLEAR				BIT(2)
+#define I2CM_READ_REQUEST_CLEAR				BIT(1)
+#define I2CM_OP_DONE_CLEAR				BIT(0)
+#define MAINUNIT_1_INT_FORCE				0x302c
+/* AVPUNIT Interrupt Registers */
+#define AVP_INTVEC_INDEX				0x3800
+#define AVP_0_INT_STATUS				0x3810
+#define AVP_0_INT_MASK_N				0x3814
+#define AVP_0_INT_CLEAR					0x3818
+#define AVP_0_INT_FORCE					0x381c
+#define AVP_1_INT_STATUS				0x3820
+#define AVP_1_INT_MASK_N				0x3824
+#define HDCP14_AUTH_CHG_MASK_N				BIT(6)
+#define AVP_1_INT_CLEAR					0x3828
+#define AVP_1_INT_FORCE					0x382c
+#define AVP_2_INT_STATUS				0x3830
+#define AVP_2_INT_MASK_N				0x3834
+#define AVP_2_INT_CLEAR					0x3838
+#define AVP_2_INT_FORCE					0x383c
+#define AVP_3_INT_STATUS				0x3840
+#define AVP_3_INT_MASK_N				0x3844
+#define AVP_3_INT_CLEAR					0x3848
+#define AVP_3_INT_FORCE					0x384c
+#define AVP_4_INT_STATUS				0x3850
+#define AVP_4_INT_MASK_N				0x3854
+#define AVP_4_INT_CLEAR					0x3858
+#define AVP_4_INT_FORCE					0x385c
+#define AVP_5_INT_STATUS				0x3860
+#define AVP_5_INT_MASK_N				0x3864
+#define AVP_5_INT_CLEAR					0x3868
+#define AVP_5_INT_FORCE					0x386c
+#define AVP_6_INT_STATUS				0x3870
+#define AVP_6_INT_MASK_N				0x3874
+#define AVP_6_INT_CLEAR					0x3878
+#define AVP_6_INT_FORCE					0x387c
+/* CEC Interrupt Registers */
+#define CEC_INT_STATUS					0x4000
+#define CEC_INT_MASK_N					0x4004
+#define CEC_INT_CLEAR					0x4008
+#define CEC_INT_FORCE					0x400c
+/* eARC RX Interrupt Registers  */
+#define EARCRX_INTVEC_INDEX				0x4800
+#define EARCRX_0_INT_STATUS				0x4810
+#define EARCRX_CMDC_DISCOVERY_TIMEOUT_IRQ		BIT(9)
+#define EARCRX_CMDC_DISCOVERY_DONE_IRQ			BIT(8)
+#define EARCRX_0_INT_MASK_N				0x4814
+#define EARCRX_0_INT_CLEAR				0x4818
+#define EARCRX_0_INT_FORCE				0x481c
+#define EARCRX_1_INT_STATUS				0x4820
+#define EARCRX_1_INT_MASK_N				0x4824
+#define EARCRX_1_INT_CLEAR				0x4828
+#define EARCRX_1_INT_FORCE				0x482c
+
+#endif /* __DW_HDMI_QP_H__ */
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 6a46baa0737c..a9cc4604222a 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -131,6 +131,7 @@  struct dw_hdmi_plat_data {
 	unsigned long input_bus_encoding;
 	bool use_drm_infoframe;
 	bool ycbcr_420_allowed;
+	bool is_hdmi_qp;
 
 	/*
 	 * Private data passed to all the .mode_valid() and .configure_phy()
@@ -162,6 +163,7 @@  struct dw_hdmi_plat_data {
 			     unsigned long mpixelclock);
 
 	unsigned int disable_cec : 1;
+
 };
 
 struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
@@ -206,6 +208,12 @@  void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data,
 			    bool force, bool disabled, bool rxsense);
 void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data);
 
+void dw_hdmi_qp_unbind(struct dw_hdmi *hdmi);
+struct dw_hdmi *dw_hdmi_qp_bind(struct platform_device *pdev,
+				struct drm_encoder *encoder,
+				struct dw_hdmi_plat_data *plat_data);
+void dw_hdmi_qp_resume(struct device *dev, struct dw_hdmi *hdmi);
+
 bool dw_hdmi_bus_fmt_is_420(struct dw_hdmi *hdmi);
 
 #endif /* __IMX_HDMI_H__ */