From: Alex Deucher Date: Thu, 13 Sep 2012 14:56:16 +0000 (-0400) Subject: drm/radeon: rework crtc pll setup to better support PPLL sharing X-Git-Tag: v3.7-rc1~118^2~3^2~19 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=19eca43e5a52a8e47fdd40e940912b2417c7c055;p=platform%2Fkernel%2Flinux-3.10.git drm/radeon: rework crtc pll setup to better support PPLL sharing We need the calculate the pixel clock before allocating a PPLL in order to insure the clocks really match. Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 2f7cc9e..cf8ac5a 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -533,11 +533,9 @@ union adjust_pixel_clock { }; static u32 atombios_adjust_pll(struct drm_crtc *crtc, - struct drm_display_mode *mode, - struct radeon_pll *pll, - bool ss_enabled, - struct radeon_atom_ss *ss) + struct drm_display_mode *mode) { + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); struct drm_device *dev = crtc->dev; struct radeon_device *rdev = dev->dev_private; struct drm_encoder *encoder = NULL; @@ -550,32 +548,32 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, bool is_duallink = false; /* reset the pll flags */ - pll->flags = 0; + radeon_crtc->pll_flags = 0; if (ASIC_IS_AVIVO(rdev)) { if ((rdev->family == CHIP_RS600) || (rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) - pll->flags |= (/*RADEON_PLL_USE_FRAC_FB_DIV |*/ - RADEON_PLL_PREFER_CLOSEST_LOWER); + radeon_crtc->pll_flags |= (/*RADEON_PLL_USE_FRAC_FB_DIV |*/ + RADEON_PLL_PREFER_CLOSEST_LOWER); if (ASIC_IS_DCE32(rdev) && mode->clock > 200000) /* range limits??? */ - pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV; else - pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV; if (rdev->family < CHIP_RV770) - pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; /* use frac fb div on APUs */ if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev)) - pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; } else { - pll->flags |= RADEON_PLL_LEGACY; + radeon_crtc->pll_flags |= RADEON_PLL_LEGACY; if (mode->clock > 200000) /* range limits??? */ - pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV; else - pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV; } list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { @@ -598,12 +596,12 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, /* use recommended ref_div for ss */ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { - if (ss_enabled) { - if (ss->refdiv) { - pll->flags |= RADEON_PLL_USE_REF_DIV; - pll->reference_div = ss->refdiv; + if (radeon_crtc->ss_enabled) { + if (radeon_crtc->ss.refdiv) { + radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV; + radeon_crtc->pll_reference_div = radeon_crtc->ss.refdiv; if (ASIC_IS_AVIVO(rdev)) - pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; } } } @@ -613,14 +611,14 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, if (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1) adjusted_clock = mode->clock * 2; if (radeon_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT)) - pll->flags |= RADEON_PLL_PREFER_CLOSEST_LOWER; + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_CLOSEST_LOWER; if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) - pll->flags |= RADEON_PLL_IS_LCD; + radeon_crtc->pll_flags |= RADEON_PLL_IS_LCD; } else { if (encoder->encoder_type != DRM_MODE_ENCODER_DAC) - pll->flags |= RADEON_PLL_NO_ODD_POST_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_NO_ODD_POST_DIV; if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) - pll->flags |= RADEON_PLL_USE_REF_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV; } break; } @@ -650,7 +648,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, args.v1.usPixelClock = cpu_to_le16(mode->clock / 10); args.v1.ucTransmitterID = radeon_encoder->encoder_id; args.v1.ucEncodeMode = encoder_mode; - if (ss_enabled && ss->percentage) + if (radeon_crtc->ss_enabled && radeon_crtc->ss.percentage) args.v1.ucConfig |= ADJUST_DISPLAY_CONFIG_SS_ENABLE; @@ -663,7 +661,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, args.v3.sInput.ucTransmitterID = radeon_encoder->encoder_id; args.v3.sInput.ucEncodeMode = encoder_mode; args.v3.sInput.ucDispPllConfig = 0; - if (ss_enabled && ss->percentage) + if (radeon_crtc->ss_enabled && radeon_crtc->ss.percentage) args.v3.sInput.ucDispPllConfig |= DISPPLL_CONFIG_SS_ENABLE; if (ENCODER_MODE_IS_DP(encoder_mode)) { @@ -695,14 +693,14 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, index, (uint32_t *)&args); adjusted_clock = le32_to_cpu(args.v3.sOutput.ulDispPllFreq) * 10; if (args.v3.sOutput.ucRefDiv) { - pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; - pll->flags |= RADEON_PLL_USE_REF_DIV; - pll->reference_div = args.v3.sOutput.ucRefDiv; + radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV; + radeon_crtc->pll_reference_div = args.v3.sOutput.ucRefDiv; } if (args.v3.sOutput.ucPostDiv) { - pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; - pll->flags |= RADEON_PLL_USE_POST_DIV; - pll->post_div = args.v3.sOutput.ucPostDiv; + radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; + radeon_crtc->pll_flags |= RADEON_PLL_USE_POST_DIV; + radeon_crtc->pll_post_div = args.v3.sOutput.ucPostDiv; } break; default: @@ -910,21 +908,17 @@ static void atombios_crtc_program_pll(struct drm_crtc *crtc, atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); } -static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) +static bool atombios_crtc_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) { struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); struct drm_device *dev = crtc->dev; struct radeon_device *rdev = dev->dev_private; struct drm_encoder *encoder = NULL; struct radeon_encoder *radeon_encoder = NULL; - u32 pll_clock = mode->clock; - u32 ref_div = 0, fb_div = 0, frac_fb_div = 0, post_div = 0; - struct radeon_pll *pll; - u32 adjusted_clock; int encoder_mode = 0; - struct radeon_atom_ss ss; - bool ss_enabled = false; - int bpc = 8; + + radeon_crtc->bpc = 8; + radeon_crtc->ss_enabled = false; list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { if (encoder->crtc == crtc) { @@ -935,21 +929,7 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode } if (!radeon_encoder) - return; - - switch (radeon_crtc->pll_id) { - case ATOM_PPLL1: - pll = &rdev->clock.p1pll; - break; - case ATOM_PPLL2: - pll = &rdev->clock.p2pll; - break; - case ATOM_DCPLL: - case ATOM_PPLL_INVALID: - default: - pll = &rdev->clock.dcpll; - break; - } + return false; if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) || (radeon_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE)) { @@ -961,7 +941,7 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv; int dp_clock; - bpc = radeon_get_monitor_bpc(connector); + radeon_crtc->bpc = radeon_get_monitor_bpc(connector); switch (encoder_mode) { case ATOM_ENCODER_MODE_DP_MST: @@ -969,45 +949,54 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode /* DP/eDP */ dp_clock = dig_connector->dp_clock / 10; if (ASIC_IS_DCE4(rdev)) - ss_enabled = - radeon_atombios_get_asic_ss_info(rdev, &ss, + radeon_crtc->ss_enabled = + radeon_atombios_get_asic_ss_info(rdev, &radeon_crtc->ss, ASIC_INTERNAL_SS_ON_DP, dp_clock); else { if (dp_clock == 16200) { - ss_enabled = - radeon_atombios_get_ppll_ss_info(rdev, &ss, + radeon_crtc->ss_enabled = + radeon_atombios_get_ppll_ss_info(rdev, + &radeon_crtc->ss, ATOM_DP_SS_ID2); - if (!ss_enabled) - ss_enabled = - radeon_atombios_get_ppll_ss_info(rdev, &ss, + if (!radeon_crtc->ss_enabled) + radeon_crtc->ss_enabled = + radeon_atombios_get_ppll_ss_info(rdev, + &radeon_crtc->ss, ATOM_DP_SS_ID1); } else - ss_enabled = - radeon_atombios_get_ppll_ss_info(rdev, &ss, + radeon_crtc->ss_enabled = + radeon_atombios_get_ppll_ss_info(rdev, + &radeon_crtc->ss, ATOM_DP_SS_ID1); } break; case ATOM_ENCODER_MODE_LVDS: if (ASIC_IS_DCE4(rdev)) - ss_enabled = radeon_atombios_get_asic_ss_info(rdev, &ss, - dig->lcd_ss_id, - mode->clock / 10); + radeon_crtc->ss_enabled = + radeon_atombios_get_asic_ss_info(rdev, + &radeon_crtc->ss, + dig->lcd_ss_id, + mode->clock / 10); else - ss_enabled = radeon_atombios_get_ppll_ss_info(rdev, &ss, - dig->lcd_ss_id); + radeon_crtc->ss_enabled = + radeon_atombios_get_ppll_ss_info(rdev, + &radeon_crtc->ss, + dig->lcd_ss_id); break; case ATOM_ENCODER_MODE_DVI: if (ASIC_IS_DCE4(rdev)) - ss_enabled = - radeon_atombios_get_asic_ss_info(rdev, &ss, + radeon_crtc->ss_enabled = + radeon_atombios_get_asic_ss_info(rdev, + &radeon_crtc->ss, ASIC_INTERNAL_SS_ON_TMDS, mode->clock / 10); break; case ATOM_ENCODER_MODE_HDMI: if (ASIC_IS_DCE4(rdev)) - ss_enabled = - radeon_atombios_get_asic_ss_info(rdev, &ss, + radeon_crtc->ss_enabled = + radeon_atombios_get_asic_ss_info(rdev, + &radeon_crtc->ss, ASIC_INTERNAL_SS_ON_HDMI, mode->clock / 10); break; @@ -1017,43 +1006,91 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode } /* adjust pixel clock as needed */ - adjusted_clock = atombios_adjust_pll(crtc, mode, pll, ss_enabled, &ss); + radeon_crtc->adjusted_clock = atombios_adjust_pll(crtc, mode); + + return true; +} + +static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) +{ + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + struct drm_device *dev = crtc->dev; + struct radeon_device *rdev = dev->dev_private; + struct drm_encoder *encoder = NULL; + struct radeon_encoder *radeon_encoder = NULL; + u32 pll_clock = mode->clock; + u32 ref_div = 0, fb_div = 0, frac_fb_div = 0, post_div = 0; + struct radeon_pll *pll; + int encoder_mode = 0; + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { + if (encoder->crtc == crtc) { + radeon_encoder = to_radeon_encoder(encoder); + encoder_mode = atombios_get_encoder_mode(encoder); + break; + } + } + + if (!radeon_encoder) + return; + + switch (radeon_crtc->pll_id) { + case ATOM_PPLL1: + pll = &rdev->clock.p1pll; + break; + case ATOM_PPLL2: + pll = &rdev->clock.p2pll; + break; + case ATOM_DCPLL: + case ATOM_PPLL_INVALID: + default: + pll = &rdev->clock.dcpll; + break; + } + + /* update pll params */ + pll->flags = radeon_crtc->pll_flags; + pll->reference_div = radeon_crtc->pll_reference_div; + pll->post_div = radeon_crtc->pll_post_div; if (radeon_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT)) /* TV seems to prefer the legacy algo on some boards */ - radeon_compute_pll_legacy(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div, - &ref_div, &post_div); + radeon_compute_pll_legacy(pll, radeon_crtc->adjusted_clock, &pll_clock, + &fb_div, &frac_fb_div, &ref_div, &post_div); else if (ASIC_IS_AVIVO(rdev)) - radeon_compute_pll_avivo(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div, - &ref_div, &post_div); + radeon_compute_pll_avivo(pll, radeon_crtc->adjusted_clock, &pll_clock, + &fb_div, &frac_fb_div, &ref_div, &post_div); else - radeon_compute_pll_legacy(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div, - &ref_div, &post_div); + radeon_compute_pll_legacy(pll, radeon_crtc->adjusted_clock, &pll_clock, + &fb_div, &frac_fb_div, &ref_div, &post_div); - atombios_crtc_program_ss(rdev, ATOM_DISABLE, radeon_crtc->pll_id, radeon_crtc->crtc_id, &ss); + atombios_crtc_program_ss(rdev, ATOM_DISABLE, radeon_crtc->pll_id, + radeon_crtc->crtc_id, &radeon_crtc->ss); atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id, encoder_mode, radeon_encoder->encoder_id, mode->clock, - ref_div, fb_div, frac_fb_div, post_div, bpc, ss_enabled, &ss); + ref_div, fb_div, frac_fb_div, post_div, + radeon_crtc->bpc, radeon_crtc->ss_enabled, &radeon_crtc->ss); - if (ss_enabled) { + if (radeon_crtc->ss_enabled) { /* calculate ss amount and step size */ if (ASIC_IS_DCE4(rdev)) { u32 step_size; - u32 amount = (((fb_div * 10) + frac_fb_div) * ss.percentage) / 10000; - ss.amount = (amount / 10) & ATOM_PPLL_SS_AMOUNT_V2_FBDIV_MASK; - ss.amount |= ((amount - (amount / 10)) << ATOM_PPLL_SS_AMOUNT_V2_NFRAC_SHIFT) & + u32 amount = (((fb_div * 10) + frac_fb_div) * radeon_crtc->ss.percentage) / 10000; + radeon_crtc->ss.amount = (amount / 10) & ATOM_PPLL_SS_AMOUNT_V2_FBDIV_MASK; + radeon_crtc->ss.amount |= ((amount - (amount / 10)) << ATOM_PPLL_SS_AMOUNT_V2_NFRAC_SHIFT) & ATOM_PPLL_SS_AMOUNT_V2_NFRAC_MASK; - if (ss.type & ATOM_PPLL_SS_TYPE_V2_CENTRE_SPREAD) - step_size = (4 * amount * ref_div * (ss.rate * 2048)) / + if (radeon_crtc->ss.type & ATOM_PPLL_SS_TYPE_V2_CENTRE_SPREAD) + step_size = (4 * amount * ref_div * (radeon_crtc->ss.rate * 2048)) / (125 * 25 * pll->reference_freq / 100); else - step_size = (2 * amount * ref_div * (ss.rate * 2048)) / + step_size = (2 * amount * ref_div * (radeon_crtc->ss.rate * 2048)) / (125 * 25 * pll->reference_freq / 100); - ss.step = step_size; + radeon_crtc->ss.step = step_size; } - atombios_crtc_program_ss(rdev, ATOM_ENABLE, radeon_crtc->pll_id, radeon_crtc->crtc_id, &ss); + atombios_crtc_program_ss(rdev, ATOM_ENABLE, radeon_crtc->pll_id, + radeon_crtc->crtc_id, &radeon_crtc->ss); } } @@ -1809,6 +1846,8 @@ static bool atombios_crtc_mode_fixup(struct drm_crtc *crtc, { if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode)) return false; + if (!atombios_crtc_prepare_pll(crtc, adjusted_mode)) + return false; return true; } diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index 5005057..9f45e4b 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -282,6 +282,18 @@ struct radeon_tv_regs { uint16_t v_code_timing[MAX_V_CODE_TIMING_LEN]; }; +struct radeon_atom_ss { + uint16_t percentage; + uint8_t type; + uint16_t step; + uint8_t delay; + uint8_t range; + uint8_t refdiv; + /* asic_ss */ + uint16_t rate; + uint16_t amount; +}; + struct radeon_crtc { struct drm_crtc base; int crtc_id; @@ -306,6 +318,14 @@ struct radeon_crtc { /* page flipping */ struct radeon_unpin_work *unpin_work; int deferred_flip_completion; + /* pll sharing */ + struct radeon_atom_ss ss; + bool ss_enabled; + u32 adjusted_clock; + int bpc; + u32 pll_reference_div; + u32 pll_post_div; + u32 pll_flags; }; struct radeon_encoder_primary_dac { @@ -359,18 +379,6 @@ struct radeon_encoder_ext_tmds { }; /* spread spectrum */ -struct radeon_atom_ss { - uint16_t percentage; - uint8_t type; - uint16_t step; - uint8_t delay; - uint8_t range; - uint8_t refdiv; - /* asic_ss */ - uint16_t rate; - uint16_t amount; -}; - struct radeon_encoder_atom_dig { bool linkb; /* atom dig */