From befa372b990a3c02fde475be2a457d2c8fceac69 Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Tue, 9 Jul 2019 11:39:31 -0700 Subject: [PATCH] drm/i915/gen11: Program ICL_DPCLKA_CFGCR0 according to PHY MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Although the register name implies that it operates on DDI's, DPCLKA_CFGCR0_ICL actually needs to be programmed according to the PHY that's in use. I.e., when using EHL's DDI-D on combo PHY A, the bits described as "port A" in the bspec are what we need to set. The bspec clarifies: "[For EHL] DDID clock tied to DDIA clock, so DPCLKA_CFGCR0 DDIA Clock Select chooses the PLL for both DDIA and DDID and drives port A in all cases." Also, since the CNL DPCLKA_CFGCR0 bit defines are still port-based, we create separate ICL-specific defines that accept the PHY rather than trying to share the same bit definitions between CNL and ICL. v5: Make icl_dpclka_cfgcr0_clk_off() take phy rather than port. When splitting the original patch the hunk to handle this wound up too late in the series. (Sparse) v6: Since we're already changing this code, s/DPCLKA_CFGCR0_ICL/ICL_DPCLKA_CFGCR0/ for consistency. (Jose) Bspec: 33148 Cc: José Roberto de Souza Signed-off-by: Matt Roper Reviewed-by: Ville Syrjälä Reviewed-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20190709183934.445-3-matthew.d.roper@intel.com --- drivers/gpu/drm/i915/display/icl_dsi.c | 33 ++++++---- drivers/gpu/drm/i915/display/intel_ddi.c | 63 ++++++++++++-------- drivers/gpu/drm/i915/display/intel_display.c | 2 +- drivers/gpu/drm/i915/i915_reg.h | 12 ++-- 4 files changed, 67 insertions(+), 43 deletions(-) diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c index 3cf95c34143c..8f1324c2f539 100644 --- a/drivers/gpu/drm/i915/display/icl_dsi.c +++ b/drivers/gpu/drm/i915/display/icl_dsi.c @@ -560,14 +560,16 @@ static void gen11_dsi_gate_clocks(struct intel_encoder *encoder) struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); u32 tmp; enum port port; + enum phy phy; mutex_lock(&dev_priv->dpll_lock); - tmp = I915_READ(DPCLKA_CFGCR0_ICL); + tmp = I915_READ(ICL_DPCLKA_CFGCR0); for_each_dsi_port(port, intel_dsi->ports) { - tmp |= DPCLKA_CFGCR0_DDI_CLK_OFF(port); + phy = intel_port_to_phy(dev_priv, port); + tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); } - I915_WRITE(DPCLKA_CFGCR0_ICL, tmp); + I915_WRITE(ICL_DPCLKA_CFGCR0, tmp); mutex_unlock(&dev_priv->dpll_lock); } @@ -577,14 +579,16 @@ static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder) struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); u32 tmp; enum port port; + enum phy phy; mutex_lock(&dev_priv->dpll_lock); - tmp = I915_READ(DPCLKA_CFGCR0_ICL); + tmp = I915_READ(ICL_DPCLKA_CFGCR0); for_each_dsi_port(port, intel_dsi->ports) { - tmp &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port); + phy = intel_port_to_phy(dev_priv, port); + tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); } - I915_WRITE(DPCLKA_CFGCR0_ICL, tmp); + I915_WRITE(ICL_DPCLKA_CFGCR0, tmp); mutex_unlock(&dev_priv->dpll_lock); } @@ -595,23 +599,26 @@ static void gen11_dsi_map_pll(struct intel_encoder *encoder, struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); struct intel_shared_dpll *pll = crtc_state->shared_dpll; enum port port; + enum phy phy; u32 val; mutex_lock(&dev_priv->dpll_lock); - val = I915_READ(DPCLKA_CFGCR0_ICL); + val = I915_READ(ICL_DPCLKA_CFGCR0); for_each_dsi_port(port, intel_dsi->ports) { - val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port); - val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port); + phy = intel_port_to_phy(dev_priv, port); + val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); + val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy); } - I915_WRITE(DPCLKA_CFGCR0_ICL, val); + I915_WRITE(ICL_DPCLKA_CFGCR0, val); for_each_dsi_port(port, intel_dsi->ports) { - val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port); + phy = intel_port_to_phy(dev_priv, port); + val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); } - I915_WRITE(DPCLKA_CFGCR0_ICL, val); + I915_WRITE(ICL_DPCLKA_CFGCR0, val); - POSTING_READ(DPCLKA_CFGCR0_ICL); + POSTING_READ(ICL_DPCLKA_CFGCR0); mutex_unlock(&dev_priv->dpll_lock); } diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index ad638e7f27bb..e5b55b4928bb 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -2729,12 +2729,13 @@ u32 ddi_signal_levels(struct intel_dp *intel_dp) static inline u32 icl_dpclka_cfgcr0_clk_off(struct drm_i915_private *dev_priv, - enum port port) + enum phy phy) { - if (intel_port_is_combophy(dev_priv, port)) { - return ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(port); - } else if (intel_port_is_tc(dev_priv, port)) { - enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + if (intel_phy_is_combo(dev_priv, phy)) { + return ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); + } else if (intel_phy_is_tc(dev_priv, phy)) { + enum tc_port tc_port = intel_port_to_tc(dev_priv, + (enum port)phy); return ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port); } @@ -2747,23 +2748,33 @@ static void icl_map_plls_to_ports(struct intel_encoder *encoder, { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_shared_dpll *pll = crtc_state->shared_dpll; - enum port port = encoder->port; + enum phy phy = intel_port_to_phy(dev_priv, encoder->port); u32 val; mutex_lock(&dev_priv->dpll_lock); - val = I915_READ(DPCLKA_CFGCR0_ICL); - WARN_ON((val & icl_dpclka_cfgcr0_clk_off(dev_priv, port)) == 0); + val = I915_READ(ICL_DPCLKA_CFGCR0); + WARN_ON((val & icl_dpclka_cfgcr0_clk_off(dev_priv, phy)) == 0); - if (intel_port_is_combophy(dev_priv, port)) { - val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port); - val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port); - I915_WRITE(DPCLKA_CFGCR0_ICL, val); - POSTING_READ(DPCLKA_CFGCR0_ICL); + if (intel_phy_is_combo(dev_priv, phy)) { + /* + * Even though this register references DDIs, note that we + * want to pass the PHY rather than the port (DDI). For + * ICL, port=phy in all cases so it doesn't matter, but for + * EHL the bspec notes the following: + * + * "DDID clock tied to DDIA clock, so DPCLKA_CFGCR0 DDIA + * Clock Select chooses the PLL for both DDIA and DDID and + * drives port A in all cases." + */ + val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); + val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy); + I915_WRITE(ICL_DPCLKA_CFGCR0, val); + POSTING_READ(ICL_DPCLKA_CFGCR0); } - val &= ~icl_dpclka_cfgcr0_clk_off(dev_priv, port); - I915_WRITE(DPCLKA_CFGCR0_ICL, val); + val &= ~icl_dpclka_cfgcr0_clk_off(dev_priv, phy); + I915_WRITE(ICL_DPCLKA_CFGCR0, val); mutex_unlock(&dev_priv->dpll_lock); } @@ -2771,14 +2782,14 @@ static void icl_map_plls_to_ports(struct intel_encoder *encoder, static void icl_unmap_plls_to_ports(struct intel_encoder *encoder) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); - enum port port = encoder->port; + enum phy phy = intel_port_to_phy(dev_priv, encoder->port); u32 val; mutex_lock(&dev_priv->dpll_lock); - val = I915_READ(DPCLKA_CFGCR0_ICL); - val |= icl_dpclka_cfgcr0_clk_off(dev_priv, port); - I915_WRITE(DPCLKA_CFGCR0_ICL, val); + val = I915_READ(ICL_DPCLKA_CFGCR0); + val |= icl_dpclka_cfgcr0_clk_off(dev_priv, phy); + I915_WRITE(ICL_DPCLKA_CFGCR0, val); mutex_unlock(&dev_priv->dpll_lock); } @@ -2836,11 +2847,13 @@ void icl_sanitize_encoder_pll_mapping(struct intel_encoder *encoder) ddi_clk_needed = false; } - val = I915_READ(DPCLKA_CFGCR0_ICL); + val = I915_READ(ICL_DPCLKA_CFGCR0); for_each_port_masked(port, port_mask) { + enum phy phy = intel_port_to_phy(dev_priv, port); + bool ddi_clk_ungated = !(val & icl_dpclka_cfgcr0_clk_off(dev_priv, - port)); + phy)); if (ddi_clk_needed == ddi_clk_ungated) continue; @@ -2852,10 +2865,10 @@ void icl_sanitize_encoder_pll_mapping(struct intel_encoder *encoder) if (WARN_ON(ddi_clk_needed)) continue; - DRM_NOTE("Port %c is disabled/in DSI mode with an ungated DDI clock, gate it\n", - port_name(port)); - val |= icl_dpclka_cfgcr0_clk_off(dev_priv, port); - I915_WRITE(DPCLKA_CFGCR0_ICL, val); + DRM_NOTE("PHY %c is disabled/in DSI mode with an ungated DDI clock, gate it\n", + phy_name(port)); + val |= icl_dpclka_cfgcr0_clk_off(dev_priv, phy); + I915_WRITE(ICL_DPCLKA_CFGCR0, val); } } diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 43caee6d3c2f..44c79f8bd028 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -10096,7 +10096,7 @@ static void icelake_get_ddi_pll(struct drm_i915_private *dev_priv, u32 temp; if (intel_port_is_combophy(dev_priv, port)) { - temp = I915_READ(DPCLKA_CFGCR0_ICL) & + temp = I915_READ(ICL_DPCLKA_CFGCR0) & DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port); id = temp >> DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port); port_dpll_id = ICL_PORT_DPLL_DEFAULT; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5898f59e3dd7..d3fc575a94db 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -9697,17 +9697,21 @@ enum skl_power_gate { * CNL Clocks */ #define DPCLKA_CFGCR0 _MMIO(0x6C200) -#define DPCLKA_CFGCR0_ICL _MMIO(0x164280) #define DPCLKA_CFGCR0_DDI_CLK_OFF(port) (1 << ((port) == PORT_F ? 23 : \ (port) + 10)) -#define ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(port) (1 << ((port) + 10)) -#define ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port) (1 << ((tc_port) == PORT_TC4 ? \ - 21 : (tc_port) + 12)) #define DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port) ((port) == PORT_F ? 21 : \ (port) * 2) #define DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port) (3 << DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port)) #define DPCLKA_CFGCR0_DDI_CLK_SEL(pll, port) ((pll) << DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port)) +#define ICL_DPCLKA_CFGCR0 _MMIO(0x164280) +#define ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy) (1 << _PICK(phy, 10, 11, 24)) +#define ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port) (1 << ((tc_port) == PORT_TC4 ? \ + 21 : (tc_port) + 12)) +#define ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy) ((phy) * 2) +#define ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy) (3 << ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy)) +#define ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll, phy) ((pll) << ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy)) + /* CNL PLL */ #define DPLL0_ENABLE 0x46010 #define DPLL1_ENABLE 0x46014 -- 2.30.2