drm/i915: Avoid mixing up SST and MST in DDI setup
[cascardo/linux.git] / drivers / gpu / drm / i915 / intel_drv.h
index ebe7b34..55af7f0 100644 (file)
 })
 
 #define wait_for(COND, MS)             _wait_for((COND), (MS) * 1000, 1000)
-#define wait_for_us(COND, US)          _wait_for((COND), (US), 1)
 
 /* If CONFIG_PREEMPT_COUNT is disabled, in_atomic() always reports false. */
 #if defined(CONFIG_DRM_I915_DEBUG) && defined(CONFIG_PREEMPT_COUNT)
-# define _WAIT_FOR_ATOMIC_CHECK WARN_ON_ONCE(!in_atomic())
+# define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) WARN_ON_ONCE((ATOMIC) && !in_atomic())
 #else
-# define _WAIT_FOR_ATOMIC_CHECK do { } while (0)
+# define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) do { } while (0)
 #endif
 
-#define _wait_for_atomic(COND, US) ({ \
-       unsigned long end__; \
-       int ret__ = 0; \
-       _WAIT_FOR_ATOMIC_CHECK; \
+#define _wait_for_atomic(COND, US, ATOMIC) \
+({ \
+       int cpu, ret, timeout = (US) * 1000; \
+       u64 base; \
+       _WAIT_FOR_ATOMIC_CHECK(ATOMIC); \
        BUILD_BUG_ON((US) > 50000); \
-       end__ = (local_clock() >> 10) + (US) + 1; \
-       while (!(COND)) { \
-               if (time_after((unsigned long)(local_clock() >> 10), end__)) { \
-                       /* Unlike the regular wait_for(), this atomic variant \
-                        * cannot be preempted (and we'll just ignore the issue\
-                        * of irq interruptions) and so we know that no time \
-                        * has passed since the last check of COND and can \
-                        * immediately report the timeout. \
-                        */ \
-                       ret__ = -ETIMEDOUT; \
+       if (!(ATOMIC)) { \
+               preempt_disable(); \
+               cpu = smp_processor_id(); \
+       } \
+       base = local_clock(); \
+       for (;;) { \
+               u64 now = local_clock(); \
+               if (!(ATOMIC)) \
+                       preempt_enable(); \
+               if (COND) { \
+                       ret = 0; \
+                       break; \
+               } \
+               if (now - base >= timeout) { \
+                       ret = -ETIMEDOUT; \
                        break; \
                } \
                cpu_relax(); \
+               if (!(ATOMIC)) { \
+                       preempt_disable(); \
+                       if (unlikely(cpu != smp_processor_id())) { \
+                               timeout -= now - base; \
+                               cpu = smp_processor_id(); \
+                               base = local_clock(); \
+                       } \
+               } \
        } \
+       ret; \
+})
+
+#define wait_for_us(COND, US) \
+({ \
+       int ret__; \
+       BUILD_BUG_ON(!__builtin_constant_p(US)); \
+       if ((US) > 10) \
+               ret__ = _wait_for((COND), (US), 10); \
+       else \
+               ret__ = _wait_for_atomic((COND), (US), 0); \
        ret__; \
 })
 
-#define wait_for_atomic(COND, MS)      _wait_for_atomic((COND), (MS) * 1000)
-#define wait_for_atomic_us(COND, US)   _wait_for_atomic((COND), (US))
+#define wait_for_atomic(COND, MS)      _wait_for_atomic((COND), (MS) * 1000, 1)
+#define wait_for_atomic_us(COND, US)   _wait_for_atomic((COND), (US), 1)
 
 #define KHz(x) (1000 * (x))
 #define MHz(x) KHz(1000 * (x))
@@ -135,7 +159,7 @@ enum intel_output_type {
        INTEL_OUTPUT_LVDS = 4,
        INTEL_OUTPUT_TVOUT = 5,
        INTEL_OUTPUT_HDMI = 6,
-       INTEL_OUTPUT_DISPLAYPORT = 7,
+       INTEL_OUTPUT_DP = 7,
        INTEL_OUTPUT_EDP = 8,
        INTEL_OUTPUT_DSI = 9,
        INTEL_OUTPUT_UNKNOWN = 10,
@@ -159,6 +183,7 @@ struct intel_framebuffer {
 struct intel_fbdev {
        struct drm_fb_helper helper;
        struct intel_framebuffer *fb;
+       async_cookie_t cookie;
        int preferred_bpp;
 };
 
@@ -242,14 +267,6 @@ struct intel_connector {
         * and active (i.e. dpms ON state). */
        bool (*get_hw_state)(struct intel_connector *);
 
-       /*
-        * Removes all interfaces through which the connector is accessible
-        * - like sysfs, debugfs entries -, so that no new operations can be
-        * started on the connector. Also makes sure all currently pending
-        * operations finish before returing.
-        */
-       void (*unregister)(struct intel_connector *);
-
        /* Panel info for eDP and LVDS */
        struct intel_panel panel;
 
@@ -505,12 +522,10 @@ struct intel_crtc_state {
         */
        bool limited_color_range;
 
-       /* DP has a bunch of special case unfortunately, so mark the pipe
-        * accordingly. */
-       bool has_dp_encoder;
-
-       /* DSI has special cases */
-       bool has_dsi_encoder;
+       /* Bitmask of encoder types (enum intel_output_type)
+        * driven by the pipe.
+        */
+       unsigned int output_types;
 
        /* Whether we should send NULL infoframes. Required for audio. */
        bool has_hdmi_sink;
@@ -579,6 +594,12 @@ struct intel_crtc_state {
 
        uint8_t lane_count;
 
+       /*
+        * Used by platforms having DP/HDMI PHY with programmable lane
+        * latency optimization.
+        */
+       uint8_t lane_lat_optim_mask;
+
        /* Panel fitter controls for gen2-gen4 + VLV */
        struct {
                u32 control;
@@ -831,6 +852,7 @@ struct intel_dp {
        int link_rate;
        uint8_t lane_count;
        uint8_t sink_count;
+       bool link_mst;
        bool has_audio;
        bool detect_done;
        enum hdmi_force_audio force_audio;
@@ -863,6 +885,11 @@ struct intel_dp {
         * this port. Only relevant on VLV/CHV.
         */
        enum pipe pps_pipe;
+       /*
+        * Set if the sequencer may be reset due to a power transition,
+        * requiring a reinitialization. Only relevant on BXT.
+        */
+       bool pps_reset;
        struct edp_power_seq pps_delays;
 
        bool can_mst; /* this port supports mst */
@@ -888,8 +915,6 @@ struct intel_dp {
        /* This is called before a link training is starterd */
        void (*prepare_link_retrain)(struct intel_dp *intel_dp);
 
-       bool train_set_valid;
-
        /* Displayport compliance testing */
        unsigned long compliance_test_type;
        unsigned long compliance_test_data;
@@ -961,14 +986,14 @@ vlv_pipe_to_channel(enum pipe pipe)
 static inline struct drm_crtc *
 intel_get_crtc_for_pipe(struct drm_device *dev, int pipe)
 {
-       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct drm_i915_private *dev_priv = to_i915(dev);
        return dev_priv->pipe_to_crtc_mapping[pipe];
 }
 
 static inline struct drm_crtc *
 intel_get_crtc_for_plane(struct drm_device *dev, int plane)
 {
-       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct drm_i915_private *dev_priv = to_i915(dev);
        return dev_priv->plane_to_crtc_mapping[plane];
 }
 
@@ -1078,12 +1103,12 @@ void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
 
 /* intel_crt.c */
 void intel_crt_init(struct drm_device *dev);
-
+void intel_crt_reset(struct drm_encoder *encoder);
 
 /* intel_ddi.c */
 void intel_ddi_clk_select(struct intel_encoder *encoder,
                          const struct intel_crtc_state *pipe_config);
-void intel_prepare_ddi_buffer(struct intel_encoder *encoder);
+void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder);
 void hsw_fdi_link_train(struct drm_crtc *crtc);
 void intel_ddi_init(struct drm_device *dev, enum port port);
 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
@@ -1154,7 +1179,6 @@ struct intel_connector *intel_connector_alloc(void);
 bool intel_connector_get_hw_state(struct intel_connector *connector);
 void intel_connector_attach_encoder(struct intel_connector *connector,
                                    struct intel_encoder *encoder);
-struct drm_encoder *intel_best_encoder(struct drm_connector *connector);
 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
                                             struct drm_crtc *crtc);
 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector);
@@ -1162,7 +1186,20 @@ int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
                                struct drm_file *file_priv);
 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
                                             enum pipe pipe);
-bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type);
+static inline bool
+intel_crtc_has_type(const struct intel_crtc_state *crtc_state,
+                   enum intel_output_type type)
+{
+       return crtc_state->output_types & (1 << type);
+}
+static inline bool
+intel_crtc_has_dp_encoder(const struct intel_crtc_state *crtc_state)
+{
+       return crtc_state->output_types &
+               ((1 << INTEL_OUTPUT_DP) |
+                (1 << INTEL_OUTPUT_DP_MST) |
+                (1 << INTEL_OUTPUT_EDP));
+}
 static inline void
 intel_wait_for_vblank(struct drm_device *dev, int pipe)
 {
@@ -1261,11 +1298,14 @@ void intel_prepare_reset(struct drm_i915_private *dev_priv);
 void intel_finish_reset(struct drm_i915_private *dev_priv);
 void hsw_enable_pc8(struct drm_i915_private *dev_priv);
 void hsw_disable_pc8(struct drm_i915_private *dev_priv);
-void broxton_init_cdclk(struct drm_i915_private *dev_priv);
-void broxton_uninit_cdclk(struct drm_i915_private *dev_priv);
-void broxton_ddi_phy_init(struct drm_i915_private *dev_priv);
-void broxton_ddi_phy_uninit(struct drm_i915_private *dev_priv);
-void broxton_ddi_phy_verify_state(struct drm_i915_private *dev_priv);
+void bxt_init_cdclk(struct drm_i915_private *dev_priv);
+void bxt_uninit_cdclk(struct drm_i915_private *dev_priv);
+void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy);
+void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy);
+bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv,
+                           enum dpio_phy phy);
+bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv,
+                             enum dpio_phy phy);
 void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
 void bxt_enable_dc9(struct drm_i915_private *dev_priv);
 void bxt_disable_dc9(struct drm_i915_private *dev_priv);
@@ -1340,7 +1380,7 @@ void intel_dp_mst_resume(struct drm_device *dev);
 int intel_dp_max_link_rate(struct intel_dp *intel_dp);
 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
 void intel_dp_hot_plug(struct intel_encoder *intel_encoder);
-void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv);
+void intel_power_sequencer_reset(struct drm_i915_private *dev_priv);
 uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
 void intel_plane_destroy(struct drm_plane *plane);
 void intel_edp_drrs_enable(struct intel_dp *intel_dp);
@@ -1386,6 +1426,8 @@ int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector);
 
 /* intel_dvo.c */
 void intel_dvo_init(struct drm_device *dev);
+/* intel_hotplug.c */
+void intel_hpd_poll_init(struct drm_i915_private *dev_priv);
 
 
 /* legacy fbdev emulation in intel_fbdev.c */
@@ -1423,11 +1465,15 @@ static inline void intel_fbdev_restore_mode(struct drm_device *dev)
 void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
                           struct drm_atomic_state *state);
 bool intel_fbc_is_active(struct drm_i915_private *dev_priv);
-void intel_fbc_pre_update(struct intel_crtc *crtc);
+void intel_fbc_pre_update(struct intel_crtc *crtc,
+                         struct intel_crtc_state *crtc_state,
+                         struct intel_plane_state *plane_state);
 void intel_fbc_post_update(struct intel_crtc *crtc);
 void intel_fbc_init(struct drm_i915_private *dev_priv);
 void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv);
-void intel_fbc_enable(struct intel_crtc *crtc);
+void intel_fbc_enable(struct intel_crtc *crtc,
+                     struct intel_crtc_state *crtc_state,
+                     struct intel_plane_state *plane_state);
 void intel_fbc_disable(struct intel_crtc *crtc);
 void intel_fbc_global_disable(struct drm_i915_private *dev_priv);
 void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
@@ -1449,6 +1495,7 @@ void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable);
 
 /* intel_lvds.c */
 void intel_lvds_init(struct drm_device *dev);
+struct intel_encoder *intel_get_lvds_encoder(struct drm_device *dev);
 bool intel_is_dual_link_lvds(struct drm_device *dev);
 
 
@@ -1487,7 +1534,8 @@ void intel_gmch_panel_fitting(struct intel_crtc *crtc,
                              int fitting_mode);
 void intel_panel_set_backlight_acpi(struct intel_connector *connector,
                                    u32 level, u32 max);
-int intel_panel_setup_backlight(struct drm_connector *connector, enum pipe pipe);
+int intel_panel_setup_backlight(struct drm_connector *connector,
+                               enum pipe pipe);
 void intel_panel_enable_backlight(struct intel_connector *connector);
 void intel_panel_disable_backlight(struct intel_connector *connector);
 void intel_panel_destroy_backlight(struct drm_connector *connector);
@@ -1496,8 +1544,19 @@ extern struct drm_display_mode *intel_find_panel_downclock(
                                struct drm_device *dev,
                                struct drm_display_mode *fixed_mode,
                                struct drm_connector *connector);
-void intel_backlight_register(struct drm_device *dev);
-void intel_backlight_unregister(struct drm_device *dev);
+
+#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
+int intel_backlight_device_register(struct intel_connector *connector);
+void intel_backlight_device_unregister(struct intel_connector *connector);
+#else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+static int intel_backlight_device_register(struct intel_connector *connector)
+{
+       return 0;
+}
+static inline void intel_backlight_device_unregister(struct intel_connector *connector)
+{
+}
+#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
 
 
 /* intel_psr.c */
@@ -1609,13 +1668,6 @@ enable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
        atomic_dec(&dev_priv->pm.wakeref_count);
 }
 
-/* TODO: convert users of these to rely instead on proper RPM refcounting */
-#define DISABLE_RPM_WAKEREF_ASSERTS(dev_priv)  \
-       disable_rpm_wakeref_asserts(dev_priv)
-
-#define ENABLE_RPM_WAKEREF_ASSERTS(dev_priv)   \
-       enable_rpm_wakeref_asserts(dev_priv)
-
 void intel_runtime_pm_get(struct drm_i915_private *dev_priv);
 bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_get_noresume(struct drm_i915_private *dev_priv);
@@ -1641,11 +1693,11 @@ void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
 void intel_gpu_ips_teardown(void);
 void intel_init_gt_powersave(struct drm_i915_private *dev_priv);
 void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv);
+void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv);
 void intel_enable_gt_powersave(struct drm_i915_private *dev_priv);
+void intel_autoenable_gt_powersave(struct drm_i915_private *dev_priv);
 void intel_disable_gt_powersave(struct drm_i915_private *dev_priv);
 void intel_suspend_gt_powersave(struct drm_i915_private *dev_priv);
-void intel_reset_gt_powersave(struct drm_i915_private *dev_priv);
-void gen6_update_ring_freq(struct drm_i915_private *dev_priv);
 void gen6_rps_busy(struct drm_i915_private *dev_priv);
 void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
 void gen6_rps_idle(struct drm_i915_private *dev_priv);