[PATCH i-g-t 1/2] lib/igt_kms: Add 6k resolution support for a single CRTC

[Sharma, Swati2]

Hi Jeevan,

On 12-11-2024 10:04 pm, Jeevan B wrote:
> increase big_joiner limitation to 6k from 5k for display version
> greater than 30.
>
> Bspec: 68858
>
> Signed-off-by: Jeevan B <jeevan.b at intel.com>
> ---
>   lib/igt_kms.c | 22 ++++++++++++++--------
>   lib/igt_kms.h |  5 +++--
>   2 files changed, 17 insertions(+), 10 deletions(-)
>
> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> index 5d8096a17..ca7f90ca8 100644
> --- a/lib/igt_kms.c
> +++ b/lib/igt_kms.c
> @@ -6330,6 +6330,7 @@ int igt_get_max_dotclock(int fd)
>   
>   /**
>    * igt_bigjoiner_possible:
> + * @fd: drm file descriptor
>    * @mode: libdrm mode
>    * @max_dotclock: Max pixel clock frequency
>    *
> @@ -6338,10 +6339,13 @@ int igt_get_max_dotclock(int fd)
>    *
>    * Returns: True if mode requires Bigjoiner, else False.
>    */
> -bool igt_bigjoiner_possible(drmModeModeInfo *mode, int max_dotclock)
> +bool igt_bigjoiner_possible(int fd, drmModeModeInfo *mode, int max_dotclock)
>   {
> -	return (mode->hdisplay > MAX_HDISPLAY_PER_PIPE ||
> -		mode->clock > max_dotclock);
> +	int max_hdisplay, dev_id;
> +	dev_id = intel_get_drm_devid(fd);
> +	max_hdisplay = (intel_display_ver(dev_id) >= 30) ? HDISPLAY_6K_PER_PIPE :
> +							   HDISPLAY_5K_PER_PIPE;
> +	return (mode->hdisplay > max_hdisplay || mode->clock > max_dotclock);
>   }
>   
>   /**
> @@ -6362,10 +6366,10 @@ bool bigjoiner_mode_found(int drm_fd, drmModeConnector *connector,
>   	bool found = false;
>   
>   	igt_sort_connector_modes(connector, sort_drm_modes_by_res_dsc);
> -	found = igt_bigjoiner_possible(&connector->modes[0], max_dotclock);
> +	found = igt_bigjoiner_possible(drm_fd, &connector->modes[0], max_dotclock);
>   	if (!found) {
>   		igt_sort_connector_modes(connector, sort_drm_modes_by_clk_dsc);
> -		found = igt_bigjoiner_possible(&connector->modes[0], max_dotclock);
> +		found = igt_bigjoiner_possible(drm_fd, &connector->modes[0], max_dotclock);
>   	}
>   	if (found)
>   		*mode = connector->modes[0];
> @@ -6384,7 +6388,7 @@ bool bigjoiner_mode_found(int drm_fd, drmModeConnector *connector,
>    */
>   bool igt_ultrajoiner_possible(drmModeModeInfo *mode, int max_dotclock)
>   {
> -	return (mode->hdisplay > 2 * MAX_HDISPLAY_PER_PIPE ||
> +	return (mode->hdisplay > 2 * HDISPLAY_5K_PER_PIPE ||
>   		mode->clock > 2 * max_dotclock);

Is there any change in ultra joiner condition?

>   }
>   
> @@ -6549,7 +6553,8 @@ bool igt_check_bigjoiner_support(igt_display_t *display)
>   	 *  - current & previous crtcs are consecutive
>   	 */
>   	for (i = 0; i < pipes_in_use; i++) {
> -		if (pipes[i].force_joiner || igt_bigjoiner_possible(pipes[i].mode, max_dotclock)) {
> +		if (pipes[i].force_joiner || igt_bigjoiner_possible(display->drm_fd, pipes[i].mode,
> +		    max_dotclock)) {
>   			igt_info("pipe-%s-%s: (Max dot-clock: %d KHz), force joiner: %s\n",
>   				 kmstest_pipe_name(pipes[i].idx),
>   				 igt_output_name(pipes[i].output),
> @@ -6576,7 +6581,8 @@ bool igt_check_bigjoiner_support(igt_display_t *display)
>   			}
>   		}
>   
> -		if ((i > 0) && (pipes[i - 1].force_joiner || igt_bigjoiner_possible(pipes[i - 1].mode, max_dotclock))) {
> +		if ((i > 0) && (pipes[i - 1].force_joiner || igt_bigjoiner_possible(display->drm_fd,
> +		    pipes[i - 1].mode, max_dotclock))) {
>   			igt_info("pipe-%s-%s: (Max dot-clock: %d KHz), force joiner: %s\n",
>   				 kmstest_pipe_name(pipes[i - 1].idx),
>   				 igt_output_name(pipes[i - 1].output),
> diff --git a/lib/igt_kms.h b/lib/igt_kms.h
> index bd154d1c1..a1d2b8632 100644
> --- a/lib/igt_kms.h
> +++ b/lib/igt_kms.h
> @@ -146,7 +146,8 @@ const char *kmstest_scaling_filter_str(int filter);
>   const char *kmstest_dsc_output_format_str(int output_format);
>   
>   void kmstest_dump_mode(drmModeModeInfo *mode);
> -#define MAX_HDISPLAY_PER_PIPE 5120
> +#define HDISPLAY_6K_PER_PIPE 6144
> +#define HDISPLAY_5K_PER_PIPE 5120
>   
>   int kmstest_get_pipe_from_crtc_id(int fd, int crtc_id);
>   void kmstest_set_vt_graphics_mode(void);
> @@ -1238,7 +1239,7 @@ void igt_sort_connector_modes(drmModeConnector *connector,
>   bool igt_max_bpc_constraint(igt_display_t *display, enum pipe pipe,
>   		igt_output_t *output, int bpc);
>   int igt_get_max_dotclock(int fd);
> -bool igt_bigjoiner_possible(drmModeModeInfo *mode, int max_dotclock);
> +bool igt_bigjoiner_possible(int fd, drmModeModeInfo *mode, int max_dotclock);
>   bool bigjoiner_mode_found(int drm_fd, drmModeConnector *connector,
>   			  int max_dotclock, drmModeModeInfo *mode);
>   bool igt_ultrajoiner_possible(drmModeModeInfo *mode, int max_dotclock);