[v4,38/45] drm/rockchip: inno_hdmi: Switch to infoframe type

  The inno_hdmi driver relies on its own internal infoframe type matching
the hardware.

This works fine, but in order to make further reworks easier, let's
switch to the HDMI spec definition of those types.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
 drivers/gpu/drm/rockchip/inno_hdmi.c | 71 +++++++++++++++++++++++-------------
 1 file changed, 45 insertions(+), 26 deletions(-)
  

Hi,

Maximum for inno_hdmi is: 1920x1080.

Do we still need INFOFRAME_VSI?

From Rockchip RK3036 TRM V1.0 20150907-Part2 Peripheral and Interface.pdf:

- HDMI 1.4a/b/1.3/1.2/1.1, HDCP 1.2 and DVI 1.0 standard compliant transmitter
- Supports all DTV resolutions including 480p/576p/720p/1080p

https://elixir.bootlin.com/linux/latest/source/drivers/gpu/drm/drm_edid.c#L7015

* HDMI spec says if a mode is found in HDMI 1.4b 4K modes
* we should send its VIC in vendor infoframes, else send the
* VIC in AVI infoframes. Lets check if this mode is present in
* HDMI 1.4b 4K modes https://elixir.bootlin.com/linux/latest/source/drivers/gpu/drm/drm_edid.c#L7212 * Note that there's is a need to send HDMI vendor infoframes only when using a
* 4k or stereoscopic 3D mode. So when giving any other mode as input this
* function will return -EINVAL, error that can be safely ignored.


On 11/28/23 11:24, Maxime Ripard wrote:
> The inno_hdmi driver relies on its own internal infoframe type matching
> the hardware.
>
> This works fine, but in order to make further reworks easier, let's
> switch to the HDMI spec definition of those types.
>
> Signed-off-by: Maxime Ripard <mripard@kernel.org>
> ---
>  drivers/gpu/drm/rockchip/inno_hdmi.c | 71 +++++++++++++++++++++++-------------
>  1 file changed, 45 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
> index bc7fb1278cb2..ed1d10efbef4 100644
> --- a/drivers/gpu/drm/rockchip/inno_hdmi.c
> +++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
> @@ -156,61 +156,80 @@ static void inno_hdmi_reset(struct inno_hdmi *hdmi)
>  	inno_hdmi_set_pwr_mode(hdmi, NORMAL);
>  }
>  
> +static u32 inno_hdmi_get_frame_index(struct inno_hdmi *hdmi,
> +				    enum hdmi_infoframe_type type)
> +{
> +	struct drm_device *drm = hdmi->connector.dev;
> +
> +	switch (type) {
> +	case HDMI_INFOFRAME_TYPE_VENDOR:
> +		return INFOFRAME_VSI;
> +	case HDMI_INFOFRAME_TYPE_AVI:
> +		return INFOFRAME_AVI;
> +	default:
> +		drm_err(drm, "Unknown infoframe type: %u\n", type);
> +	}
> +
> +	return 0;
> +}
> +
>  static u32 inno_hdmi_get_frame_mask(struct inno_hdmi *hdmi,
> -				    u32 frame_index)
> +				    enum hdmi_infoframe_type type)
>  {
>  	struct drm_device *drm = hdmi->connector.dev;
>  
> -	switch (frame_index) {
> -	case INFOFRAME_VSI:
> +	switch (type) {
> +	case HDMI_INFOFRAME_TYPE_VENDOR:
>  		return m_PACKET_VSI_EN;
> -	case INFOFRAME_AVI:
> +	case HDMI_INFOFRAME_TYPE_AVI:
>  		return 0;
>  	default:
> -		drm_err(drm, "Unknown infoframe type: %u\n", frame_index);
> +		drm_err(drm, "Unknown infoframe type: %u\n", type);
>  	}
>  
>  	return 0;
>  }
>  
>  static u32 inno_hdmi_get_frame_disable(struct inno_hdmi *hdmi,
> -				       u32 frame_index)
> +				       enum hdmi_infoframe_type type)
>  {
>  	struct drm_device *drm = hdmi->connector.dev;
>  
> -	switch (frame_index) {
> -	case INFOFRAME_VSI:
> +	switch (type) {
> +	case HDMI_INFOFRAME_TYPE_VENDOR:
>  		return v_PACKET_VSI_EN(0);
> -	case INFOFRAME_AVI:
> +	case HDMI_INFOFRAME_TYPE_AVI:
>  		return 0;
>  	default:
> -		drm_err(drm, "Unknown infoframe type: %u\n", frame_index);
> +		drm_err(drm, "Unknown infoframe type: %u\n", type);
>  	}
>  
>  	return 0;
>  }
>  
>  static u32 inno_hdmi_get_frame_enable(struct inno_hdmi *hdmi,
> -				      u32 frame_index)
> +				      enum hdmi_infoframe_type type)
>  {
>  	struct drm_device *drm = hdmi->connector.dev;
>  
> -	switch (frame_index) {
> -	case INFOFRAME_VSI:
> +	switch (type) {
> +	case HDMI_INFOFRAME_TYPE_VENDOR:
>  		return v_PACKET_VSI_EN(1);
> -	case INFOFRAME_AVI:
> +	case HDMI_INFOFRAME_TYPE_AVI:
>  		return 0;
>  	default:
> -		drm_err(drm, "Unknown infoframe type: %u\n", frame_index);
> +		drm_err(drm, "Unknown infoframe type: %u\n", type);
>  	}
>  
>  	return 0;
>  }
>  
> -static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi, u32 frame_index)
> +static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi,
> +				    enum hdmi_infoframe_type type)
>  {
> -	u32 disable = inno_hdmi_get_frame_disable(hdmi, frame_index);
> -	u32 mask = inno_hdmi_get_frame_mask(hdmi, frame_index);
> +	u32 frame_index = inno_hdmi_get_frame_index(hdmi, type);
> +	u32 disable = inno_hdmi_get_frame_disable(hdmi, type);
> +	u32 mask = inno_hdmi_get_frame_mask(hdmi, type);
>  
>  	if (mask)
>  		hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, disable);
> @@ -219,14 +238,14 @@ static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi, u32 frame_index)
>  }
>  
>  static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi,
> -				  union hdmi_infoframe *frame, u32 frame_index)
> +				  union hdmi_infoframe *frame, enum hdmi_infoframe_type type)
>  {
> -	u32 enable = inno_hdmi_get_frame_enable(hdmi, frame_index);
> -	u32 mask = inno_hdmi_get_frame_mask(hdmi, frame_index);
> +	u32 enable = inno_hdmi_get_frame_enable(hdmi, type);
> +	u32 mask = inno_hdmi_get_frame_mask(hdmi, type);
>  	u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
>  	ssize_t rc, i;
>  
> -	inno_hdmi_disable_frame(hdmi, frame_index);
> +	inno_hdmi_disable_frame(hdmi, type);
>  
>  	rc = hdmi_infoframe_pack(frame, packed_frame,
>  				 sizeof(packed_frame));
> @@ -253,11 +272,11 @@ static int inno_hdmi_config_video_vsi(struct inno_hdmi *hdmi,
>  							 &hdmi->connector,
>  							 mode);
>  	if (rc) {
> -		inno_hdmi_disable_frame(hdmi, INFOFRAME_VSI);
> +		inno_hdmi_disable_frame(hdmi, HDMI_INFOFRAME_TYPE_VENDOR);
>  		return rc;
>  	}
>  
> -	return inno_hdmi_upload_frame(hdmi, &frame, INFOFRAME_VSI);
> +	return inno_hdmi_upload_frame(hdmi, &frame, HDMI_INFOFRAME_TYPE_VENDOR);
>  }
>  
>  static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
> @@ -270,13 +289,13 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
>  						      &hdmi->connector,
>  						      mode);
>  	if (rc) {
> -		inno_hdmi_disable_frame(hdmi, INFOFRAME_AVI);
> +		inno_hdmi_disable_frame(hdmi, HDMI_INFOFRAME_TYPE_AVI);
>  		return rc;
>  	}
>  
>  	frame.avi.colorspace = HDMI_COLORSPACE_RGB;
>  
> -	return inno_hdmi_upload_frame(hdmi, &frame, INFOFRAME_AVI);
> +	return inno_hdmi_upload_frame(hdmi, &frame, HDMI_INFOFRAME_TYPE_AVI);
>  }
>  
>  static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
>