> Subject: [PATCH v4 06/10] drm/i915/alpm: Half LFPS cycle calculation
>
> Add support for half LFPS cycle calculation for DP2.1 ALPM as dependent
> parameters got changed.
>
> v1: Initial version.
> v2: Avoid returning early. [Jani]
> v3: Use intel_crtc_has_type(). [Suraj]
>
> Cc: Jouni Högander <[email protected]>
> Signed-off-by: Animesh Manna <[email protected]>
> ---
> drivers/gpu/drm/i915/display/intel_alpm.c | 18 +++++++++++++-----
> 1 file changed, 13 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c
> b/drivers/gpu/drm/i915/display/intel_alpm.c
> index 81472254ab73..33620f95ecc5 100644
> --- a/drivers/gpu/drm/i915/display/intel_alpm.c
> +++ b/drivers/gpu/drm/i915/display/intel_alpm.c
> @@ -73,12 +73,20 @@ static int get_silence_period_symbols(const struct
> intel_crtc_state *crtc_state) static void get_lfps_cycle_min_max_time(const
> struct intel_crtc_state *crtc_state,
> int *min, int *max)
> {
> - if (crtc_state->port_clock < 540000) {
> - *min = 65 * LFPS_CYCLE_COUNT;
> - *max = 75 * LFPS_CYCLE_COUNT;
> + struct intel_display *display = to_intel_display(crtc_state);
> +
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) {
> + if (crtc_state->port_clock < 540000) {
> + *min = DISPLAY_VER(display) < 35 ? 65 *
> LFPS_CYCLE_COUNT : 140;
> + *max = DISPLAY_VER(display) < 35 ? 75 *
> LFPS_CYCLE_COUNT : 800;
> + } else {
> + *min = 140;
> + *max = 800;
> + }
> } else {
> - *min = 140;
> - *max = 800;
> + *min = 320;
> + *max = 1600;
> + return;
> }
This can be just
struct intel_display *display = to_intel_display(crtc_state);
*min = 140;
*max= 180;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) {
if (crtc_state->port_clock < 540000 && DISPLAY_VER < 540000) {
*min = 65 * LFPS_CYCLE_COUNT ;
*max = 75 * LFPS_CYCLE_COUNT;
} else {
*min = 320;
*max = 1600;
return;
}
Regards,
Suraj Kandpal
>
> --
> 2.29.0
