From ded220e2513dee45807ba586a566f64b2887c2c4 Mon Sep 17 00:00:00 2001 From: Ander Conselvan de Oliveira Date: Mon, 21 Mar 2016 18:00:09 +0200 Subject: [PATCH] drm/i915: Simplify ironlake_crtc_compute_clock() CPU eDP case None of the code in ironlake_crtc_compute_clock() is relevant for CPU eDP. The CPU eDP PLL is turned on and off in ironlake_edp_pll_{on,off} from the DP code and that doesn't depend on the crtc_state->dpll values, so just return early in that case. v2: Rebase without patch that drops lvds downclock code. (Ville) Signed-off-by: Ander Conselvan de Oliveira Reviewed-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1458576016-30348-9-git-send-email-ander.conselvan.de.oliveira@intel.com --- drivers/gpu/drm/i915/intel_display.c | 47 ++++++++++++++-------------- 1 file changed, 23 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index c6920fc17154..0a5e8553b120 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8800,13 +8800,16 @@ static int ironlake_crtc_compute_clock(struct intel_crtc *crtc, intel_clock_t clock, reduced_clock; u32 dpll = 0, fp = 0, fp2 = 0; bool has_reduced_clock = false; - bool is_lvds = false; struct intel_shared_dpll *pll; memset(&crtc_state->dpll_hw_state, 0, sizeof(crtc_state->dpll_hw_state)); - is_lvds = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS); + crtc->lowfreq_avail = false; + + /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */ + if (!crtc_state->has_pch_encoder) + return 0; if (!crtc_state->clock_set) { if (!ironlake_compute_clocks(&crtc->base, crtc_state, &clock, @@ -8824,34 +8827,30 @@ static int ironlake_crtc_compute_clock(struct intel_crtc *crtc, crtc_state->dpll.p2 = clock.p2; } - /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */ - if (crtc_state->has_pch_encoder) { - fp = i9xx_dpll_compute_fp(&crtc_state->dpll); - if (has_reduced_clock) - fp2 = i9xx_dpll_compute_fp(&reduced_clock); - else - fp2 = fp; + fp = i9xx_dpll_compute_fp(&crtc_state->dpll); + if (has_reduced_clock) + fp2 = i9xx_dpll_compute_fp(&reduced_clock); + else + fp2 = fp; - dpll = ironlake_compute_dpll(crtc, crtc_state, - &fp, &reduced_clock, - has_reduced_clock ? &fp2 : NULL); + dpll = ironlake_compute_dpll(crtc, crtc_state, + &fp, &reduced_clock, + has_reduced_clock ? &fp2 : NULL); - crtc_state->dpll_hw_state.dpll = dpll; - crtc_state->dpll_hw_state.fp0 = fp; - crtc_state->dpll_hw_state.fp1 = fp2; + crtc_state->dpll_hw_state.dpll = dpll; + crtc_state->dpll_hw_state.fp0 = fp; + crtc_state->dpll_hw_state.fp1 = fp2; - pll = intel_get_shared_dpll(crtc, crtc_state, NULL); - if (pll == NULL) { - DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n", - pipe_name(crtc->pipe)); - return -EINVAL; - } + pll = intel_get_shared_dpll(crtc, crtc_state, NULL); + if (pll == NULL) { + DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n", + pipe_name(crtc->pipe)); + return -EINVAL; } - if (is_lvds && has_reduced_clock) + if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) && + has_reduced_clock) crtc->lowfreq_avail = true; - else - crtc->lowfreq_avail = false; return 0; } -- 2.20.1