From a44628b9293b81b53b00adbf90b3dd6e3b9dbc32 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 14 May 2018 21:28:27 +0300 Subject: [PATCH] drm/i915: Clean up LVDS pipe select bits MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Clean up the LVDS pipe select bits. To make the whole situation a bit less ugly we'll start to share the same code between .get_hw_state() and the port state asserts. v2: Order the defines shift,mask,value (Jani) Drop ruperfluous braces and whitesapce changes (Jani) Combine masks in compute_is_dual_link_lvds() (Jani) v3: Fix LVDS_PIPE_SEL_MASK_CPT Reviewed-by: Jani Nikula Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20180514182827.28629-1-ville.syrjala@linux.intel.com --- drivers/gpu/drm/i915/i915_reg.h | 9 ++++--- drivers/gpu/drm/i915/intel_display.c | 33 +++++------------------ drivers/gpu/drm/i915/intel_drv.h | 2 ++ drivers/gpu/drm/i915/intel_lvds.c | 52 +++++++++++++++++++----------------- 4 files changed, 42 insertions(+), 54 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index ae3c262..753b8f1 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4392,9 +4392,12 @@ enum { */ #define LVDS_PORT_EN (1 << 31) /* Selects pipe B for LVDS data. Must be set on pre-965. */ -#define LVDS_PIPEB_SELECT (1 << 30) -#define LVDS_PIPE_MASK (1 << 30) -#define LVDS_PIPE(pipe) ((pipe) << 30) +#define LVDS_PIPE_SEL_SHIFT 30 +#define LVDS_PIPE_SEL_MASK (1 << 30) +#define LVDS_PIPE_SEL(pipe) ((pipe) << 30) +#define LVDS_PIPE_SEL_SHIFT_CPT 29 +#define LVDS_PIPE_SEL_MASK_CPT (3 << 29) +#define LVDS_PIPE_SEL_CPT(pipe) ((pipe) << 29) /* LVDS dithering flag on 965/g4x platform */ #define LVDS_ENABLE_DITHER (1 << 25) /* LVDS sync polarity flags. Set to invert (i.e. negative) */ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 6daa8d9..a1c6cc7 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1214,9 +1214,8 @@ void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe) pp_reg = PP_CONTROL(0); port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK; - if (port_sel == PANEL_PORT_SELECT_LVDS && - I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT) - panel_pipe = PIPE_B; + if (port_sel == PANEL_PORT_SELECT_LVDS) + intel_lvds_port_enabled(dev_priv, PCH_LVDS, &panel_pipe); /* XXX: else fix for eDP */ } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { /* presumably write lock depends on pipe, not port select */ @@ -1224,8 +1223,7 @@ void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe) panel_pipe = pipe; } else { pp_reg = PP_CONTROL(0); - if (I915_READ(LVDS) & LVDS_PIPEB_SELECT) - panel_pipe = PIPE_B; + intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe); } val = I915_READ(pp_reg); @@ -1344,22 +1342,6 @@ static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv, return true; } -static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv, - enum pipe pipe, u32 val) -{ - if ((val & LVDS_PORT_EN) == 0) - return false; - - if (HAS_PCH_CPT(dev_priv)) { - if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe)) - return false; - } else { - if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe)) - return false; - } - return true; -} - static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv, enum pipe pipe, i915_reg_t reg, u32 port_sel) @@ -1391,7 +1373,6 @@ static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv, enum pipe pipe) { enum pipe port_pipe; - u32 val; assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B); assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C); @@ -1402,10 +1383,10 @@ static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv, "PCH VGA enabled on transcoder %c, should be disabled\n", pipe_name(pipe)); - val = I915_READ(PCH_LVDS); - I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val), - "PCH LVDS enabled on transcoder %c, should be disabled\n", - pipe_name(pipe)); + I915_STATE_WARN(intel_lvds_port_enabled(dev_priv, PCH_LVDS, &port_pipe) && + port_pipe == pipe, + "PCH LVDS enabled on transcoder %c, should be disabled\n", + pipe_name(pipe)); assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB); assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 4237950..911d496 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1824,6 +1824,8 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port); /* intel_lvds.c */ +bool intel_lvds_port_enabled(struct drm_i915_private *dev_priv, + i915_reg_t lvds_reg, enum pipe *pipe); void intel_lvds_init(struct drm_i915_private *dev_priv); struct intel_encoder *intel_get_lvds_encoder(struct drm_device *dev); bool intel_is_dual_link_lvds(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 8691c86..cc4cc86 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -85,34 +85,35 @@ static struct intel_lvds_connector *to_lvds_connector(struct drm_connector *conn return container_of(connector, struct intel_lvds_connector, base.base); } +bool intel_lvds_port_enabled(struct drm_i915_private *dev_priv, + i915_reg_t lvds_reg, enum pipe *pipe) +{ + u32 val; + + val = I915_READ(lvds_reg); + + /* asserts want to know the pipe even if the port is disabled */ + if (HAS_PCH_CPT(dev_priv)) + *pipe = (val & LVDS_PIPE_SEL_MASK_CPT) >> LVDS_PIPE_SEL_SHIFT_CPT; + else + *pipe = (val & LVDS_PIPE_SEL_MASK) >> LVDS_PIPE_SEL_SHIFT; + + return val & LVDS_PORT_EN; +} + static bool intel_lvds_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe) { - struct drm_device *dev = encoder->base.dev; - struct drm_i915_private *dev_priv = to_i915(dev); + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); - u32 tmp; bool ret; if (!intel_display_power_get_if_enabled(dev_priv, encoder->power_domain)) return false; - ret = false; + ret = intel_lvds_port_enabled(dev_priv, lvds_encoder->reg, pipe); - tmp = I915_READ(lvds_encoder->reg); - - if (!(tmp & LVDS_PORT_EN)) - goto out; - - if (HAS_PCH_CPT(dev_priv)) - *pipe = PORT_TO_PIPE_CPT(tmp); - else - *pipe = PORT_TO_PIPE(tmp); - - ret = true; - -out: intel_display_power_put(dev_priv, encoder->power_domain); return ret; @@ -255,14 +256,11 @@ static void intel_pre_enable_lvds(struct intel_encoder *encoder, temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP; if (HAS_PCH_CPT(dev_priv)) { - temp &= ~PORT_TRANS_SEL_MASK; - temp |= PORT_TRANS_SEL_CPT(pipe); + temp &= ~LVDS_PIPE_SEL_MASK_CPT; + temp |= LVDS_PIPE_SEL_CPT(pipe); } else { - if (pipe == 1) { - temp |= LVDS_PIPEB_SELECT; - } else { - temp &= ~LVDS_PIPEB_SELECT; - } + temp &= ~LVDS_PIPE_SEL_MASK; + temp |= LVDS_PIPE_SEL(pipe); } /* set the corresponsding LVDS_BORDER bit */ @@ -908,7 +906,11 @@ static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder) * register is uninitialized. */ val = I915_READ(lvds_encoder->reg); - if (!(val & ~(LVDS_PIPE_MASK | LVDS_DETECTED))) + if (HAS_PCH_CPT(dev_priv)) + val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK_CPT); + else + val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK); + if (val == 0) val = dev_priv->vbt.bios_lvds_val; return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP; -- 2.7.4