diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c index 20c6fe48567f..573898984726 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c @@ -70,6 +70,7 @@ static uint32_t dcn31_panel_cntl_hw_init(struct panel_cntl *panel_cntl) struct dcn31_panel_cntl *dcn31_panel_cntl = TO_DCN31_PANEL_CNTL(panel_cntl); struct dc_dmub_srv *dc_dmub_srv = panel_cntl->ctx->dmub_srv; union dmub_rb_cmd cmd; + uint32_t freq_to_set = panel_cntl->ctx->dc->debug.pwm_freq; if (!dc_dmub_srv) return 0; @@ -96,6 +97,19 @@ static uint32_t dcn31_panel_cntl_hw_init(struct panel_cntl *panel_cntl) panel_cntl->stored_backlight_registers.PANEL_PWRSEQ_REF_DIV2 = cmd.panel_cntl.data.bl_pwm_ref_div2; + if (freq_to_set >= MIN_DEBUG_FREQ_HZ && freq_to_set <= MAX_DEBUG_FREQ_HZ) { + uint32_t xtal = panel_cntl->ctx->dc->res_pool->ref_clocks.dccg_ref_clock_inKhz; + + memset(&cmd, 0, sizeof(cmd)); + cmd.panel_cntl.header.type = DMUB_CMD__PANEL_CNTL; + cmd.panel_cntl.header.sub_type = DMUB_CMD__PANEL_DEBUG_PWM_FREQ; + cmd.panel_cntl.header.payload_bytes = sizeof(cmd.panel_cntl.data); + cmd.panel_cntl.data.pwrseq_inst = dcn31_panel_cntl->base.pwrseq_inst; + cmd.panel_cntl.data.bl_pwm_cntl = xtal; + cmd.panel_cntl.data.bl_pwm_period_cntl = freq_to_set; + if (!dc_wake_and_execute_dmub_cmd(dc_dmub_srv->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY)) + return 0; + } return cmd.panel_cntl.data.current_backlight; } |