/* * Copyright © 2014 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #include <linux/component.h> #include <linux/kernel.h> #include <drm/drm_edid.h> #include <drm/drm_eld.h> #include <drm/drm_fixed.h> #include <drm/intel/i915_component.h> #include "i915_drv.h" #include "intel_atomic.h" #include "intel_audio.h" #include "intel_audio_regs.h" #include "intel_cdclk.h" #include "intel_crtc.h" #include "intel_de.h" #include "intel_display_types.h" #include "intel_lpe_audio.h" /** * DOC: High Definition Audio over HDMI and Display Port * * The graphics and audio drivers together support High Definition Audio over * HDMI and Display Port. The audio programming sequences are divided into audio * codec and controller enable and disable sequences. The graphics driver * handles the audio codec sequences, while the audio driver handles the audio * controller sequences. * * The disable sequences must be performed before disabling the transcoder or * port. The enable sequences may only be performed after enabling the * transcoder and port, and after completed link training. Therefore the audio * enable/disable sequences are part of the modeset sequence. * * The codec and controller sequences could be done either parallel or serial, * but generally the ELDV/PD change in the codec sequence indicates to the audio * driver that the controller sequence should start. Indeed, most of the * co-operation between the graphics and audio drivers is handled via audio * related registers. (The notable exception is the power management, not * covered here.) * * The struct &i915_audio_component is used to interact between the graphics * and audio drivers. The struct &i915_audio_component_ops @ops in it is * defined in graphics driver and called in audio driver. The * struct &i915_audio_component_audio_ops @audio_ops is called from i915 driver. */ struct intel_audio_funcs { … }; struct hdmi_aud_ncts { … }; static const struct { … } hdmi_audio_clock[] = …; /* HDMI N/CTS table */ #define TMDS_297M … #define TMDS_296M … #define TMDS_594M … #define TMDS_593M … static const struct hdmi_aud_ncts hdmi_aud_ncts_24bpp[] = …; /* Appendix C - N & CTS values for deep color from HDMI 2.0 spec*/ /* HDMI N/CTS table for 10 bit deep color(30 bpp)*/ #define TMDS_371M … #define TMDS_370M … static const struct hdmi_aud_ncts hdmi_aud_ncts_30bpp[] = …; /* HDMI N/CTS table for 12 bit deep color(36 bpp)*/ #define TMDS_445_5M … #define TMDS_445M … static const struct hdmi_aud_ncts hdmi_aud_ncts_36bpp[] = …; /* * WA_14020863754: Implement Audio Workaround * Corner case with Min Hblank Fix can cause audio hang */ static bool needs_wa_14020863754(struct drm_i915_private *i915) { … } /* get AUD_CONFIG_PIXEL_CLOCK_HDMI_* value for mode */ static u32 audio_config_hdmi_pixel_clock(const struct intel_crtc_state *crtc_state) { … } static int audio_config_hdmi_get_n(const struct intel_crtc_state *crtc_state, int rate) { … } /* ELD buffer size in dwords */ static int g4x_eld_buffer_size(struct drm_i915_private *i915) { … } static void g4x_audio_codec_get_config(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state) { … } static void g4x_audio_codec_disable(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { … } static void g4x_audio_codec_enable(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { … } static void hsw_dp_audio_config_update(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { … } static void hsw_hdmi_audio_config_update(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { … } static void hsw_audio_config_update(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { … } static void hsw_audio_codec_disable(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { … } static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { … } static unsigned int calc_samples_room(const struct intel_crtc_state *crtc_state) { … } static void enable_audio_dsc_wa(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { … } static void hsw_audio_codec_enable(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { … } struct ibx_audio_regs { … }; static void ibx_audio_regs_init(struct drm_i915_private *i915, enum pipe pipe, struct ibx_audio_regs *regs) { … } static void ibx_audio_codec_disable(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { … } static void ibx_audio_codec_enable(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { … } void intel_audio_sdp_split_update(const struct intel_crtc_state *crtc_state) { … } bool intel_audio_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state, struct drm_connector_state *conn_state) { … } /** * intel_audio_codec_enable - Enable the audio codec for HD audio * @encoder: encoder on which to enable audio * @crtc_state: pointer to the current crtc state. * @conn_state: pointer to the current connector state. * * The enable sequences may only be performed after enabling the transcoder and * port, and after completed link training. */ void intel_audio_codec_enable(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { … } /** * intel_audio_codec_disable - Disable the audio codec for HD audio * @encoder: encoder on which to disable audio * @old_crtc_state: pointer to the old crtc state. * @old_conn_state: pointer to the old connector state. * * The disable sequences must be performed before disabling the transcoder or * port. */ void intel_audio_codec_disable(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const struct drm_connector_state *old_conn_state) { … } static void intel_acomp_get_config(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state) { … } void intel_audio_codec_get_config(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state) { … } static const struct intel_audio_funcs g4x_audio_funcs = …; static const struct intel_audio_funcs ibx_audio_funcs = …; static const struct intel_audio_funcs hsw_audio_funcs = …; /** * intel_audio_hooks_init - Set up chip specific audio hooks * @i915: device private */ void intel_audio_hooks_init(struct drm_i915_private *i915) { … } struct aud_ts_cdclk_m_n { … }; void intel_audio_cdclk_change_pre(struct drm_i915_private *i915) { … } static void get_aud_ts_cdclk_m_n(int refclk, int cdclk, struct aud_ts_cdclk_m_n *aud_ts) { … } void intel_audio_cdclk_change_post(struct drm_i915_private *i915) { … } static int glk_force_audio_cdclk_commit(struct intel_atomic_state *state, struct intel_crtc *crtc, bool enable) { … } static void glk_force_audio_cdclk(struct drm_i915_private *i915, bool enable) { … } static unsigned long i915_audio_component_get_power(struct device *kdev) { … } static void i915_audio_component_put_power(struct device *kdev, unsigned long cookie) { … } static void i915_audio_component_codec_wake_override(struct device *kdev, bool enable) { … } /* Get CDCLK in kHz */ static int i915_audio_component_get_cdclk_freq(struct device *kdev) { … } /* * get the intel audio state according to the parameter port and cpu_transcoder * MST & (cpu_transcoder >= 0): return the audio.state[cpu_transcoder].encoder], * when port is matched * MST & (cpu_transcoder < 0): this is invalid * Non-MST & (cpu_transcoder >= 0): only cpu_transcoder = 0 (the first device entry) * will get the right intel_encoder with port matched * Non-MST & (cpu_transcoder < 0): get the right intel_encoder with port matched */ static struct intel_audio_state *find_audio_state(struct drm_i915_private *i915, int port, int cpu_transcoder) { … } static int i915_audio_component_sync_audio_rate(struct device *kdev, int port, int cpu_transcoder, int rate) { … } static int i915_audio_component_get_eld(struct device *kdev, int port, int cpu_transcoder, bool *enabled, unsigned char *buf, int max_bytes) { … } static const struct drm_audio_component_ops i915_audio_component_ops = …; static int i915_audio_component_bind(struct device *drv_kdev, struct device *hda_kdev, void *data) { … } static void i915_audio_component_unbind(struct device *drv_kdev, struct device *hda_kdev, void *data) { … } static const struct component_ops i915_audio_component_bind_ops = …; #define AUD_FREQ_TMODE_SHIFT … #define AUD_FREQ_4T … #define AUD_FREQ_8T … #define AUD_FREQ_PULLCLKS(x) … #define AUD_FREQ_BCLK_96M … #define AUD_FREQ_GEN12 … #define AUD_FREQ_TGL_BROKEN … /** * i915_audio_component_init - initialize and register the audio component * @i915: i915 device instance * * This will register with the component framework a child component which * will bind dynamically to the snd_hda_intel driver's corresponding master * component when the latter is registered. During binding the child * initializes an instance of struct i915_audio_component which it receives * from the master. The master can then start to use the interface defined by * this struct. Each side can break the binding at any point by deregistering * its own component after which each side's component unbind callback is * called. * * We ignore any error during registration and continue with reduced * functionality (i.e. without HDMI audio). */ static void i915_audio_component_init(struct drm_i915_private *i915) { … } static void i915_audio_component_register(struct drm_i915_private *i915) { … } /** * i915_audio_component_cleanup - deregister the audio component * @i915: i915 device instance * * Deregisters the audio component, breaking any existing binding to the * corresponding snd_hda_intel driver's master component. */ static void i915_audio_component_cleanup(struct drm_i915_private *i915) { … } /** * intel_audio_init() - Initialize the audio driver either using * component framework or using lpe audio bridge * @i915: the i915 drm device private data * */ void intel_audio_init(struct drm_i915_private *i915) { … } void intel_audio_register(struct drm_i915_private *i915) { … } /** * intel_audio_deinit() - deinitialize the audio driver * @i915: the i915 drm device private data * */ void intel_audio_deinit(struct drm_i915_private *i915) { … }
Codebase Browser
linux