From 9d16da65bfda54dea0b9b10ec49a0e1d23b631eb Mon Sep 17 00:00:00 2001 From: Ander Conselvan de Oliveira Date: Tue, 8 Mar 2016 17:46:26 +0200 Subject: drm/i915: Manage HSW/BDW LCPLLs with the shared dpll interface Manage the LCPLLs used with DisplayPort, so that all the HSW/BDW DPLLs are managed by the shared dpll code. v2: Introduce INTEL_DPLL_ALWAYS_ON flag to please state checker. (Ander) v3: Initialize pll->flags in intel_shared_dpll_init(). (Ander) Signed-off-by: Ander Conselvan de Oliveira Reviewed-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1457451987-17466-13-git-send-email-ander.conselvan.de.oliveira@intel.com --- drivers/gpu/drm/i915/intel_dpll_mgr.c | 90 ++++++++++++++++++++++++++++------- 1 file changed, 72 insertions(+), 18 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_dpll_mgr.c') diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c index a90ef34a7785..a83af07e3570 100644 --- a/drivers/gpu/drm/i915/intel_dpll_mgr.c +++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c @@ -447,6 +447,12 @@ static uint32_t hsw_pll_to_ddi_pll_sel(struct intel_shared_dpll *pll) return PORT_CLK_SEL_WRPLL2; case DPLL_ID_SPLL: return PORT_CLK_SEL_SPLL; + case DPLL_ID_LCPLL_810: + return PORT_CLK_SEL_LCPLL_810; + case DPLL_ID_LCPLL_1350: + return PORT_CLK_SEL_LCPLL_1350; + case DPLL_ID_LCPLL_2700: + return PORT_CLK_SEL_LCPLL_2700; default: return PORT_CLK_SEL_NONE; } @@ -671,9 +677,13 @@ static struct intel_shared_dpll * hsw_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state, struct intel_encoder *encoder) { + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); struct intel_shared_dpll *pll; int clock = crtc_state->port_clock; + memset(&crtc_state->dpll_hw_state, 0, + sizeof(crtc_state->dpll_hw_state)); + if (encoder->type == INTEL_OUTPUT_HDMI) { uint32_t val; unsigned p, n2, r2; @@ -684,21 +694,37 @@ hsw_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state, WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) | WRPLL_DIVIDER_POST(p); - memset(&crtc_state->dpll_hw_state, 0, - sizeof(crtc_state->dpll_hw_state)); - crtc_state->dpll_hw_state.wrpll = val; pll = intel_find_shared_dpll(crtc, crtc_state, DPLL_ID_WRPLL1, DPLL_ID_WRPLL2); + } else if (encoder->type == INTEL_OUTPUT_DISPLAYPORT || + encoder->type == INTEL_OUTPUT_DP_MST || + encoder->type == INTEL_OUTPUT_EDP) { + enum intel_dpll_id pll_id; + + switch (clock / 2) { + case 81000: + pll_id = DPLL_ID_LCPLL_810; + break; + case 135000: + pll_id = DPLL_ID_LCPLL_1350; + break; + case 270000: + pll_id = DPLL_ID_LCPLL_2700; + break; + default: + DRM_DEBUG_KMS("Invalid clock for DP: %d\n", clock); + return NULL; + } + + pll = intel_get_shared_dpll_by_id(dev_priv, pll_id); + } else if (encoder->type == INTEL_OUTPUT_ANALOG) { if (WARN_ON(crtc_state->port_clock / 2 != 135000)) return NULL; - memset(&crtc_state->dpll_hw_state, 0, - sizeof(crtc_state->dpll_hw_state)); - crtc_state->dpll_hw_state.spll = SPLL_PLL_ENABLE | SPLL_PLL_FREQ_1350MHz | SPLL_PLL_SSC; @@ -731,6 +757,29 @@ static const struct intel_shared_dpll_funcs hsw_ddi_spll_funcs = { .get_hw_state = hsw_ddi_spll_get_hw_state, }; +static void hsw_ddi_lcpll_enable(struct drm_i915_private *dev_priv, + struct intel_shared_dpll *pll) +{ +} + +static void hsw_ddi_lcpll_disable(struct drm_i915_private *dev_priv, + struct intel_shared_dpll *pll) +{ +} + +static bool hsw_ddi_lcpll_get_hw_state(struct drm_i915_private *dev_priv, + struct intel_shared_dpll *pll, + struct intel_dpll_hw_state *hw_state) +{ + return true; +} + +static const struct intel_shared_dpll_funcs hsw_ddi_lcpll_funcs = { + .enable = hsw_ddi_lcpll_enable, + .disable = hsw_ddi_lcpll_disable, + .get_hw_state = hsw_ddi_lcpll_get_hw_state, +}; + struct skl_dpll_regs { i915_reg_t ctl, cfgcr1, cfgcr2; }; @@ -1537,6 +1586,7 @@ struct dpll_info { const char *name; const int id; const struct intel_shared_dpll_funcs *funcs; + uint32_t flags; }; struct intel_dpll_mgr { @@ -1548,9 +1598,9 @@ struct intel_dpll_mgr { }; static const struct dpll_info pch_plls[] = { - { "PCH DPLL A", DPLL_ID_PCH_PLL_A, &ibx_pch_dpll_funcs }, - { "PCH DPLL B", DPLL_ID_PCH_PLL_B, &ibx_pch_dpll_funcs }, - { NULL, -1, NULL }, + { "PCH DPLL A", DPLL_ID_PCH_PLL_A, &ibx_pch_dpll_funcs, 0 }, + { "PCH DPLL B", DPLL_ID_PCH_PLL_B, &ibx_pch_dpll_funcs, 0 }, + { NULL, -1, NULL, 0 }, }; static const struct intel_dpll_mgr pch_pll_mgr = { @@ -1559,9 +1609,12 @@ static const struct intel_dpll_mgr pch_pll_mgr = { }; static const struct dpll_info hsw_plls[] = { - { "WRPLL 1", DPLL_ID_WRPLL1, &hsw_ddi_wrpll_funcs }, - { "WRPLL 2", DPLL_ID_WRPLL2, &hsw_ddi_wrpll_funcs }, - { "SPLL", DPLL_ID_SPLL, &hsw_ddi_spll_funcs }, + { "WRPLL 1", DPLL_ID_WRPLL1, &hsw_ddi_wrpll_funcs, 0 }, + { "WRPLL 2", DPLL_ID_WRPLL2, &hsw_ddi_wrpll_funcs, 0 }, + { "SPLL", DPLL_ID_SPLL, &hsw_ddi_spll_funcs, 0 }, + { "LCPLL 810", DPLL_ID_LCPLL_810, &hsw_ddi_lcpll_funcs, INTEL_DPLL_ALWAYS_ON }, + { "LCPLL 1350", DPLL_ID_LCPLL_1350, &hsw_ddi_lcpll_funcs, INTEL_DPLL_ALWAYS_ON }, + { "LCPLL 2700", DPLL_ID_LCPLL_2700, &hsw_ddi_lcpll_funcs, INTEL_DPLL_ALWAYS_ON }, { NULL, -1, NULL, }, }; @@ -1571,9 +1624,9 @@ static const struct intel_dpll_mgr hsw_pll_mgr = { }; static const struct dpll_info skl_plls[] = { - { "DPPL 1", DPLL_ID_SKL_DPLL1, &skl_ddi_pll_funcs }, - { "DPPL 2", DPLL_ID_SKL_DPLL2, &skl_ddi_pll_funcs }, - { "DPPL 3", DPLL_ID_SKL_DPLL3, &skl_ddi_pll_funcs }, + { "DPPL 1", DPLL_ID_SKL_DPLL1, &skl_ddi_pll_funcs, 0 }, + { "DPPL 2", DPLL_ID_SKL_DPLL2, &skl_ddi_pll_funcs, 0 }, + { "DPPL 3", DPLL_ID_SKL_DPLL3, &skl_ddi_pll_funcs, 0 }, { NULL, -1, NULL, }, }; @@ -1583,9 +1636,9 @@ static const struct intel_dpll_mgr skl_pll_mgr = { }; static const struct dpll_info bxt_plls[] = { - { "PORT PLL A", 0, &bxt_ddi_pll_funcs }, - { "PORT PLL B", 1, &bxt_ddi_pll_funcs }, - { "PORT PLL C", 2, &bxt_ddi_pll_funcs }, + { "PORT PLL A", 0, &bxt_ddi_pll_funcs, 0 }, + { "PORT PLL B", 1, &bxt_ddi_pll_funcs, 0 }, + { "PORT PLL C", 2, &bxt_ddi_pll_funcs, 0 }, { NULL, -1, NULL, }, }; @@ -1623,6 +1676,7 @@ void intel_shared_dpll_init(struct drm_device *dev) dev_priv->shared_dplls[i].id = dpll_info[i].id; dev_priv->shared_dplls[i].name = dpll_info[i].name; dev_priv->shared_dplls[i].funcs = *dpll_info[i].funcs; + dev_priv->shared_dplls[i].flags = dpll_info[i].flags; } dev_priv->dpll_mgr = dpll_mgr; -- cgit v1.2.3