From: Jake Wang Date: Wed, 22 Sep 2021 20:25:36 +0000 (-0400) Subject: drm/amd/display: Disable dsc root clock when not being used X-Git-Tag: v6.6.17~8832^2~13^2~41 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e22ad7e338230889e6bbb5e3ca599b5219aac700;p=platform%2Fkernel%2Flinux-rpi.git drm/amd/display: Disable dsc root clock when not being used [Why & How] Disable root clock for dsc when not being used. Reviewed-by: Nikola Cornij Acked-by: Agustin Gutierrez Sanchez Signed-off-by: Jake Wang Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h index ede65100a050..f6f2d48a70c1 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h @@ -169,7 +169,17 @@ type DTBCLK_DTO_DIV[MAX_PIPES];\ type DCCG_AUDIO_DTO_SEL;\ type DCCG_AUDIO_DTO0_SOURCE_SEL;\ - type DENTIST_DISPCLK_CHG_MODE; + type DENTIST_DISPCLK_CHG_MODE;\ + type DSCCLK0_DTO_PHASE;\ + type DSCCLK0_DTO_MODULO;\ + type DSCCLK1_DTO_PHASE;\ + type DSCCLK1_DTO_MODULO;\ + type DSCCLK2_DTO_PHASE;\ + type DSCCLK2_DTO_MODULO;\ + type DSCCLK0_DTO_ENABLE;\ + type DSCCLK1_DTO_ENABLE;\ + type DSCCLK2_DTO_ENABLE; + struct dccg_shift { DCCG_REG_FIELD_LIST(uint8_t) @@ -205,6 +215,10 @@ struct dccg_registers { uint32_t SYMCLK32_SE_CNTL; uint32_t SYMCLK32_LE_CNTL; uint32_t DENTIST_DISPCLK_CNTL; + uint32_t DSCCLK_DTO_CTRL; + uint32_t DSCCLK0_DTO_PARAM; + uint32_t DSCCLK1_DTO_PARAM; + uint32_t DSCCLK2_DTO_PARAM; }; struct dcn_dccg { diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c index 152adb597d48..3a325e4afe2f 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.c @@ -247,6 +247,76 @@ void dccg31_disable_symclk32_le( } } +static void dccg31_disable_dscclk(struct dccg *dccg, int inst) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + if (!dccg->ctx->dc->debug.root_clock_optimization.bits.dsc) + return; + //DTO must be enabled to generate a 0 Hz clock output + switch (inst) { + case 0: + REG_UPDATE(DSCCLK_DTO_CTRL, + DSCCLK0_DTO_ENABLE, 1); + REG_UPDATE_2(DSCCLK0_DTO_PARAM, + DSCCLK0_DTO_PHASE, 0, + DSCCLK0_DTO_MODULO, 1); + break; + case 1: + REG_UPDATE(DSCCLK_DTO_CTRL, + DSCCLK1_DTO_ENABLE, 1); + REG_UPDATE_2(DSCCLK1_DTO_PARAM, + DSCCLK1_DTO_PHASE, 0, + DSCCLK1_DTO_MODULO, 1); + break; + case 2: + REG_UPDATE(DSCCLK_DTO_CTRL, + DSCCLK2_DTO_ENABLE, 1); + REG_UPDATE_2(DSCCLK2_DTO_PARAM, + DSCCLK2_DTO_PHASE, 0, + DSCCLK2_DTO_MODULO, 1); + break; + default: + BREAK_TO_DEBUGGER(); + return; + } +} + +static void dccg31_enable_dscclk(struct dccg *dccg, int inst) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + if (!dccg->ctx->dc->debug.root_clock_optimization.bits.dsc) + return; + //Disable DTO + switch (inst) { + case 0: + REG_UPDATE_2(DSCCLK0_DTO_PARAM, + DSCCLK0_DTO_PHASE, 0, + DSCCLK0_DTO_MODULO, 0); + REG_UPDATE(DSCCLK_DTO_CTRL, + DSCCLK0_DTO_ENABLE, 0); + break; + case 1: + REG_UPDATE_2(DSCCLK1_DTO_PARAM, + DSCCLK1_DTO_PHASE, 0, + DSCCLK1_DTO_MODULO, 0); + REG_UPDATE(DSCCLK_DTO_CTRL, + DSCCLK1_DTO_ENABLE, 0); + break; + case 2: + REG_UPDATE_2(DSCCLK2_DTO_PARAM, + DSCCLK2_DTO_PHASE, 0, + DSCCLK2_DTO_MODULO, 0); + REG_UPDATE(DSCCLK_DTO_CTRL, + DSCCLK2_DTO_ENABLE, 0); + break; + default: + BREAK_TO_DEBUGGER(); + return; + } +} + void dccg31_set_physymclk( struct dccg *dccg, int phy_inst, @@ -469,6 +539,8 @@ static const struct dccg_funcs dccg31_funcs = { .set_dtbclk_dto = dccg31_set_dtbclk_dto, .set_audio_dtbclk_dto = dccg31_set_audio_dtbclk_dto, .set_dispclk_change_mode = dccg31_set_dispclk_change_mode, + .disable_dsc = dccg31_disable_dscclk, + .enable_dsc = dccg31_enable_dscclk, }; struct dccg *dccg31_create( diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.h b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.h index 1e5aabcb7799..61b457ab790d 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.h +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dccg.h @@ -61,7 +61,11 @@ SR(DCCG_AUDIO_DTBCLK_DTO_MODULO),\ SR(DCCG_AUDIO_DTBCLK_DTO_PHASE),\ SR(DCCG_AUDIO_DTO_SOURCE),\ - SR(DENTIST_DISPCLK_CNTL) + SR(DENTIST_DISPCLK_CNTL),\ + SR(DSCCLK0_DTO_PARAM),\ + SR(DSCCLK1_DTO_PARAM),\ + SR(DSCCLK2_DTO_PARAM),\ + SR(DSCCLK_DTO_CTRL) #define DCCG_MASK_SH_LIST_DCN31(mask_sh) \ @@ -119,7 +123,17 @@ DCCG_SFII(OTG, PIXEL_RATE_CNTL, DTBCLK_DTO, DIV, 3, mask_sh),\ DCCG_SF(DCCG_AUDIO_DTO_SOURCE, DCCG_AUDIO_DTO_SEL, mask_sh),\ DCCG_SF(DCCG_AUDIO_DTO_SOURCE, DCCG_AUDIO_DTO0_SOURCE_SEL, mask_sh),\ - DCCG_SF(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_MODE, mask_sh) + DCCG_SF(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_MODE, mask_sh), \ + DCCG_SF(DSCCLK0_DTO_PARAM, DSCCLK0_DTO_PHASE, mask_sh),\ + DCCG_SF(DSCCLK0_DTO_PARAM, DSCCLK0_DTO_MODULO, mask_sh),\ + DCCG_SF(DSCCLK1_DTO_PARAM, DSCCLK1_DTO_PHASE, mask_sh),\ + DCCG_SF(DSCCLK1_DTO_PARAM, DSCCLK1_DTO_MODULO, mask_sh),\ + DCCG_SF(DSCCLK2_DTO_PARAM, DSCCLK2_DTO_PHASE, mask_sh),\ + DCCG_SF(DSCCLK2_DTO_PARAM, DSCCLK2_DTO_MODULO, mask_sh),\ + DCCG_SF(DSCCLK_DTO_CTRL, DSCCLK0_DTO_ENABLE, mask_sh),\ + DCCG_SF(DSCCLK_DTO_CTRL, DSCCLK1_DTO_ENABLE, mask_sh),\ + DCCG_SF(DSCCLK_DTO_CTRL, DSCCLK2_DTO_ENABLE, mask_sh) + struct dccg *dccg31_create( diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c index 52947c03be31..fee385e37c9b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c @@ -270,6 +270,12 @@ void dcn31_dsc_pg_control( if (hws->ctx->dc->debug.disable_dsc_power_gate) return; + if (hws->ctx->dc->debug.root_clock_optimization.bits.dsc && + hws->ctx->dc->res_pool->dccg->funcs->enable_dsc && + power_on) + hws->ctx->dc->res_pool->dccg->funcs->enable_dsc( + hws->ctx->dc->res_pool->dccg, dsc_inst); + REG_GET(DC_IP_REQUEST_CNTL, IP_REQUEST_EN, &org_ip_request_cntl); if (org_ip_request_cntl == 0) REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 1); @@ -306,6 +312,17 @@ void dcn31_dsc_pg_control( if (org_ip_request_cntl == 0) REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 0); + + if (hws->ctx->dc->debug.root_clock_optimization.bits.dsc) { + if (hws->ctx->dc->res_pool->dccg->funcs->disable_dsc && !power_on) + hws->ctx->dc->res_pool->dccg->funcs->disable_dsc( + hws->ctx->dc->res_pool->dccg, dsc_inst); + +#if defined(CONFIG_DRM_AMD_DC_DCN) + dc_z10_save_init(hws->ctx->dc); +#endif + } + } diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h index 09237d5819f4..c940fdfda144 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h @@ -123,6 +123,15 @@ struct dccg_funcs { void (*set_dispclk_change_mode)( struct dccg *dccg, enum dentist_dispclk_change_mode change_mode); + + void (*disable_dsc)( + struct dccg *dccg, + int inst); + + void (*enable_dsc)( + struct dccg *dccg, + int inst); + }; #endif //__DAL_DCCG_H__