| /* |
| * 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/kernel.h> |
| #include <linux/component.h> |
| #include <drm/i915_component.h> |
| #include "intel_drv.h" |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_edid.h> |
| #include "i915_drv.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. |
| */ |
| |
| static const struct { |
| int clock; |
| u32 config; |
| } hdmi_audio_clock[] = { |
| { 25175, AUD_CONFIG_PIXEL_CLOCK_HDMI_25175 }, |
| { 25200, AUD_CONFIG_PIXEL_CLOCK_HDMI_25200 }, /* default per bspec */ |
| { 27000, AUD_CONFIG_PIXEL_CLOCK_HDMI_27000 }, |
| { 27027, AUD_CONFIG_PIXEL_CLOCK_HDMI_27027 }, |
| { 54000, AUD_CONFIG_PIXEL_CLOCK_HDMI_54000 }, |
| { 54054, AUD_CONFIG_PIXEL_CLOCK_HDMI_54054 }, |
| { 74176, AUD_CONFIG_PIXEL_CLOCK_HDMI_74176 }, |
| { 74250, AUD_CONFIG_PIXEL_CLOCK_HDMI_74250 }, |
| { 148352, AUD_CONFIG_PIXEL_CLOCK_HDMI_148352 }, |
| { 148500, AUD_CONFIG_PIXEL_CLOCK_HDMI_148500 }, |
| }; |
| |
| /* HDMI N/CTS table */ |
| #define TMDS_297M 297000 |
| #define TMDS_296M 296703 |
| static const struct { |
| int sample_rate; |
| int clock; |
| int n; |
| int cts; |
| } aud_ncts[] = { |
| { 44100, TMDS_296M, 4459, 234375 }, |
| { 44100, TMDS_297M, 4704, 247500 }, |
| { 48000, TMDS_296M, 5824, 281250 }, |
| { 48000, TMDS_297M, 5120, 247500 }, |
| { 32000, TMDS_296M, 5824, 421875 }, |
| { 32000, TMDS_297M, 3072, 222750 }, |
| { 88200, TMDS_296M, 8918, 234375 }, |
| { 88200, TMDS_297M, 9408, 247500 }, |
| { 96000, TMDS_296M, 11648, 281250 }, |
| { 96000, TMDS_297M, 10240, 247500 }, |
| { 176400, TMDS_296M, 17836, 234375 }, |
| { 176400, TMDS_297M, 18816, 247500 }, |
| { 192000, TMDS_296M, 23296, 281250 }, |
| { 192000, TMDS_297M, 20480, 247500 }, |
| }; |
| |
| /* get AUD_CONFIG_PIXEL_CLOCK_HDMI_* value for mode */ |
| static u32 audio_config_hdmi_pixel_clock(const struct drm_display_mode *adjusted_mode) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(hdmi_audio_clock); i++) { |
| if (adjusted_mode->crtc_clock == hdmi_audio_clock[i].clock) |
| break; |
| } |
| |
| if (i == ARRAY_SIZE(hdmi_audio_clock)) { |
| DRM_DEBUG_KMS("HDMI audio pixel clock setting for %d not found, falling back to defaults\n", |
| adjusted_mode->crtc_clock); |
| i = 1; |
| } |
| |
| DRM_DEBUG_KMS("Configuring HDMI audio for pixel clock %d (0x%08x)\n", |
| hdmi_audio_clock[i].clock, |
| hdmi_audio_clock[i].config); |
| |
| return hdmi_audio_clock[i].config; |
| } |
| |
| static int audio_config_get_n(const struct drm_display_mode *mode, int rate) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(aud_ncts); i++) { |
| if ((rate == aud_ncts[i].sample_rate) && |
| (mode->clock == aud_ncts[i].clock)) { |
| return aud_ncts[i].n; |
| } |
| } |
| return 0; |
| } |
| |
| static uint32_t audio_config_setup_n_reg(int n, uint32_t val) |
| { |
| int n_low, n_up; |
| uint32_t tmp = val; |
| |
| n_low = n & 0xfff; |
| n_up = (n >> 12) & 0xff; |
| tmp &= ~(AUD_CONFIG_UPPER_N_MASK | AUD_CONFIG_LOWER_N_MASK); |
| tmp |= ((n_up << AUD_CONFIG_UPPER_N_SHIFT) | |
| (n_low << AUD_CONFIG_LOWER_N_SHIFT) | |
| AUD_CONFIG_N_PROG_ENABLE); |
| return tmp; |
| } |
| |
| /* check whether N/CTS/M need be set manually */ |
| static bool audio_rate_need_prog(struct intel_crtc *crtc, |
| const struct drm_display_mode *mode) |
| { |
| if (((mode->clock == TMDS_297M) || |
| (mode->clock == TMDS_296M)) && |
| intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) |
| return true; |
| else |
| return false; |
| } |
| |
| static bool intel_eld_uptodate(struct drm_connector *connector, |
| i915_reg_t reg_eldv, uint32_t bits_eldv, |
| i915_reg_t reg_elda, uint32_t bits_elda, |
| i915_reg_t reg_edid) |
| { |
| struct drm_i915_private *dev_priv = to_i915(connector->dev); |
| uint8_t *eld = connector->eld; |
| uint32_t tmp; |
| int i; |
| |
| tmp = I915_READ(reg_eldv); |
| tmp &= bits_eldv; |
| |
| if (!tmp) |
| return false; |
| |
| tmp = I915_READ(reg_elda); |
| tmp &= ~bits_elda; |
| I915_WRITE(reg_elda, tmp); |
| |
| for (i = 0; i < drm_eld_size(eld) / 4; i++) |
| if (I915_READ(reg_edid) != *((uint32_t *)eld + i)) |
| return false; |
| |
| return true; |
| } |
| |
| static void g4x_audio_codec_disable(struct intel_encoder *encoder) |
| { |
| struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
| uint32_t eldv, tmp; |
| |
| DRM_DEBUG_KMS("Disable audio codec\n"); |
| |
| tmp = I915_READ(G4X_AUD_VID_DID); |
| if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL) |
| eldv = G4X_ELDV_DEVCL_DEVBLC; |
| else |
| eldv = G4X_ELDV_DEVCTG; |
| |
| /* Invalidate ELD */ |
| tmp = I915_READ(G4X_AUD_CNTL_ST); |
| tmp &= ~eldv; |
| I915_WRITE(G4X_AUD_CNTL_ST, tmp); |
| } |
| |
| static void g4x_audio_codec_enable(struct drm_connector *connector, |
| struct intel_encoder *encoder, |
| const struct drm_display_mode *adjusted_mode) |
| { |
| struct drm_i915_private *dev_priv = to_i915(connector->dev); |
| uint8_t *eld = connector->eld; |
| uint32_t eldv; |
| uint32_t tmp; |
| int len, i; |
| |
| DRM_DEBUG_KMS("Enable audio codec, %u bytes ELD\n", eld[2]); |
| |
| tmp = I915_READ(G4X_AUD_VID_DID); |
| if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL) |
| eldv = G4X_ELDV_DEVCL_DEVBLC; |
| else |
| eldv = G4X_ELDV_DEVCTG; |
| |
| if (intel_eld_uptodate(connector, |
| G4X_AUD_CNTL_ST, eldv, |
| G4X_AUD_CNTL_ST, G4X_ELD_ADDR_MASK, |
| G4X_HDMIW_HDMIEDID)) |
| return; |
| |
| tmp = I915_READ(G4X_AUD_CNTL_ST); |
| tmp &= ~(eldv | G4X_ELD_ADDR_MASK); |
| len = (tmp >> 9) & 0x1f; /* ELD buffer size */ |
| I915_WRITE(G4X_AUD_CNTL_ST, tmp); |
| |
| len = min(drm_eld_size(eld) / 4, len); |
| DRM_DEBUG_DRIVER("ELD size %d\n", len); |
| for (i = 0; i < len; i++) |
| I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i)); |
| |
| tmp = I915_READ(G4X_AUD_CNTL_ST); |
| tmp |= eldv; |
| I915_WRITE(G4X_AUD_CNTL_ST, tmp); |
| } |
| |
| static void hsw_audio_codec_disable(struct intel_encoder *encoder) |
| { |
| struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
| struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
| enum pipe pipe = intel_crtc->pipe; |
| uint32_t tmp; |
| |
| DRM_DEBUG_KMS("Disable audio codec on pipe %c\n", pipe_name(pipe)); |
| |
| mutex_lock(&dev_priv->av_mutex); |
| |
| /* Disable timestamps */ |
| tmp = I915_READ(HSW_AUD_CFG(pipe)); |
| tmp &= ~AUD_CONFIG_N_VALUE_INDEX; |
| tmp |= AUD_CONFIG_N_PROG_ENABLE; |
| tmp &= ~AUD_CONFIG_UPPER_N_MASK; |
| tmp &= ~AUD_CONFIG_LOWER_N_MASK; |
| if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT)) |
| tmp |= AUD_CONFIG_N_VALUE_INDEX; |
| I915_WRITE(HSW_AUD_CFG(pipe), tmp); |
| |
| /* Invalidate ELD */ |
| tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD); |
| tmp &= ~AUDIO_ELD_VALID(pipe); |
| tmp &= ~AUDIO_OUTPUT_ENABLE(pipe); |
| I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp); |
| |
| mutex_unlock(&dev_priv->av_mutex); |
| } |
| |
| static void hsw_audio_codec_enable(struct drm_connector *connector, |
| struct intel_encoder *encoder, |
| const struct drm_display_mode *adjusted_mode) |
| { |
| struct drm_i915_private *dev_priv = to_i915(connector->dev); |
| struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
| enum pipe pipe = intel_crtc->pipe; |
| struct i915_audio_component *acomp = dev_priv->audio_component; |
| const uint8_t *eld = connector->eld; |
| struct intel_digital_port *intel_dig_port = |
| enc_to_dig_port(&encoder->base); |
| enum port port = intel_dig_port->port; |
| uint32_t tmp; |
| int len, i; |
| int n, rate; |
| |
| DRM_DEBUG_KMS("Enable audio codec on pipe %c, %u bytes ELD\n", |
| pipe_name(pipe), drm_eld_size(eld)); |
| |
| mutex_lock(&dev_priv->av_mutex); |
| |
| /* Enable audio presence detect, invalidate ELD */ |
| tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD); |
| tmp |= AUDIO_OUTPUT_ENABLE(pipe); |
| tmp &= ~AUDIO_ELD_VALID(pipe); |
| I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp); |
| |
| /* |
| * FIXME: We're supposed to wait for vblank here, but we have vblanks |
| * disabled during the mode set. The proper fix would be to push the |
| * rest of the setup into a vblank work item, queued here, but the |
| * infrastructure is not there yet. |
| */ |
| |
| /* Reset ELD write address */ |
| tmp = I915_READ(HSW_AUD_DIP_ELD_CTRL(pipe)); |
| tmp &= ~IBX_ELD_ADDRESS_MASK; |
| I915_WRITE(HSW_AUD_DIP_ELD_CTRL(pipe), tmp); |
| |
| /* Up to 84 bytes of hw ELD buffer */ |
| len = min(drm_eld_size(eld), 84); |
| for (i = 0; i < len / 4; i++) |
| I915_WRITE(HSW_AUD_EDID_DATA(pipe), *((uint32_t *)eld + i)); |
| |
| /* ELD valid */ |
| tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD); |
| tmp |= AUDIO_ELD_VALID(pipe); |
| I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp); |
| |
| /* Enable timestamps */ |
| tmp = I915_READ(HSW_AUD_CFG(pipe)); |
| tmp &= ~AUD_CONFIG_N_VALUE_INDEX; |
| tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK; |
| if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT)) |
| tmp |= AUD_CONFIG_N_VALUE_INDEX; |
| else |
| tmp |= audio_config_hdmi_pixel_clock(adjusted_mode); |
| |
| tmp &= ~AUD_CONFIG_N_PROG_ENABLE; |
| if (audio_rate_need_prog(intel_crtc, adjusted_mode)) { |
| if (!acomp) |
| rate = 0; |
| else if (port >= PORT_A && port <= PORT_E) |
| rate = acomp->aud_sample_rate[port]; |
| else { |
| DRM_ERROR("invalid port: %d\n", port); |
| rate = 0; |
| } |
| n = audio_config_get_n(adjusted_mode, rate); |
| if (n != 0) |
| tmp = audio_config_setup_n_reg(n, tmp); |
| else |
| DRM_DEBUG_KMS("no suitable N value is found\n"); |
| } |
| |
| I915_WRITE(HSW_AUD_CFG(pipe), tmp); |
| |
| mutex_unlock(&dev_priv->av_mutex); |
| } |
| |
| static void ilk_audio_codec_disable(struct intel_encoder *encoder) |
| { |
| struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
| struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
| struct intel_digital_port *intel_dig_port = |
| enc_to_dig_port(&encoder->base); |
| enum port port = intel_dig_port->port; |
| enum pipe pipe = intel_crtc->pipe; |
| uint32_t tmp, eldv; |
| i915_reg_t aud_config, aud_cntrl_st2; |
| |
| DRM_DEBUG_KMS("Disable audio codec on port %c, pipe %c\n", |
| port_name(port), pipe_name(pipe)); |
| |
| if (WARN_ON(port == PORT_A)) |
| return; |
| |
| if (HAS_PCH_IBX(dev_priv)) { |
| aud_config = IBX_AUD_CFG(pipe); |
| aud_cntrl_st2 = IBX_AUD_CNTL_ST2; |
| } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
| aud_config = VLV_AUD_CFG(pipe); |
| aud_cntrl_st2 = VLV_AUD_CNTL_ST2; |
| } else { |
| aud_config = CPT_AUD_CFG(pipe); |
| aud_cntrl_st2 = CPT_AUD_CNTRL_ST2; |
| } |
| |
| /* Disable timestamps */ |
| tmp = I915_READ(aud_config); |
| tmp &= ~AUD_CONFIG_N_VALUE_INDEX; |
| tmp |= AUD_CONFIG_N_PROG_ENABLE; |
| tmp &= ~AUD_CONFIG_UPPER_N_MASK; |
| tmp &= ~AUD_CONFIG_LOWER_N_MASK; |
| if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT)) |
| tmp |= AUD_CONFIG_N_VALUE_INDEX; |
| I915_WRITE(aud_config, tmp); |
| |
| eldv = IBX_ELD_VALID(port); |
| |
| /* Invalidate ELD */ |
| tmp = I915_READ(aud_cntrl_st2); |
| tmp &= ~eldv; |
| I915_WRITE(aud_cntrl_st2, tmp); |
| } |
| |
| static void ilk_audio_codec_enable(struct drm_connector *connector, |
| struct intel_encoder *encoder, |
| const struct drm_display_mode *adjusted_mode) |
| { |
| struct drm_i915_private *dev_priv = to_i915(connector->dev); |
| struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
| struct intel_digital_port *intel_dig_port = |
| enc_to_dig_port(&encoder->base); |
| enum port port = intel_dig_port->port; |
| enum pipe pipe = intel_crtc->pipe; |
| uint8_t *eld = connector->eld; |
| uint32_t eldv; |
| uint32_t tmp; |
| int len, i; |
| i915_reg_t hdmiw_hdmiedid, aud_config, aud_cntl_st, aud_cntrl_st2; |
| |
| DRM_DEBUG_KMS("Enable audio codec on port %c, pipe %c, %u bytes ELD\n", |
| port_name(port), pipe_name(pipe), drm_eld_size(eld)); |
| |
| if (WARN_ON(port == PORT_A)) |
| return; |
| |
| /* |
| * FIXME: We're supposed to wait for vblank here, but we have vblanks |
| * disabled during the mode set. The proper fix would be to push the |
| * rest of the setup into a vblank work item, queued here, but the |
| * infrastructure is not there yet. |
| */ |
| |
| if (HAS_PCH_IBX(connector->dev)) { |
| hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID(pipe); |
| aud_config = IBX_AUD_CFG(pipe); |
| aud_cntl_st = IBX_AUD_CNTL_ST(pipe); |
| aud_cntrl_st2 = IBX_AUD_CNTL_ST2; |
| } else if (IS_VALLEYVIEW(connector->dev) || |
| IS_CHERRYVIEW(connector->dev)) { |
| hdmiw_hdmiedid = VLV_HDMIW_HDMIEDID(pipe); |
| aud_config = VLV_AUD_CFG(pipe); |
| aud_cntl_st = VLV_AUD_CNTL_ST(pipe); |
| aud_cntrl_st2 = VLV_AUD_CNTL_ST2; |
| } else { |
| hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID(pipe); |
| aud_config = CPT_AUD_CFG(pipe); |
| aud_cntl_st = CPT_AUD_CNTL_ST(pipe); |
| aud_cntrl_st2 = CPT_AUD_CNTRL_ST2; |
| } |
| |
| eldv = IBX_ELD_VALID(port); |
| |
| /* Invalidate ELD */ |
| tmp = I915_READ(aud_cntrl_st2); |
| tmp &= ~eldv; |
| I915_WRITE(aud_cntrl_st2, tmp); |
| |
| /* Reset ELD write address */ |
| tmp = I915_READ(aud_cntl_st); |
| tmp &= ~IBX_ELD_ADDRESS_MASK; |
| I915_WRITE(aud_cntl_st, tmp); |
| |
| /* Up to 84 bytes of hw ELD buffer */ |
| len = min(drm_eld_size(eld), 84); |
| for (i = 0; i < len / 4; i++) |
| I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i)); |
| |
| /* ELD valid */ |
| tmp = I915_READ(aud_cntrl_st2); |
| tmp |= eldv; |
| I915_WRITE(aud_cntrl_st2, tmp); |
| |
| /* Enable timestamps */ |
| tmp = I915_READ(aud_config); |
| tmp &= ~AUD_CONFIG_N_VALUE_INDEX; |
| tmp &= ~AUD_CONFIG_N_PROG_ENABLE; |
| tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK; |
| if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT)) |
| tmp |= AUD_CONFIG_N_VALUE_INDEX; |
| else |
| tmp |= audio_config_hdmi_pixel_clock(adjusted_mode); |
| I915_WRITE(aud_config, tmp); |
| } |
| |
| /** |
| * intel_audio_codec_enable - Enable the audio codec for HD audio |
| * @intel_encoder: encoder on which to enable audio |
| * |
| * 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 *intel_encoder) |
| { |
| struct drm_encoder *encoder = &intel_encoder->base; |
| struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); |
| const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
| struct drm_connector *connector; |
| struct drm_device *dev = encoder->dev; |
| struct drm_i915_private *dev_priv = to_i915(dev); |
| struct i915_audio_component *acomp = dev_priv->audio_component; |
| struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
| enum port port = intel_dig_port->port; |
| |
| connector = drm_select_eld(encoder); |
| if (!connector) |
| return; |
| |
| DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n", |
| connector->base.id, |
| connector->name, |
| connector->encoder->base.id, |
| connector->encoder->name); |
| |
| /* ELD Conn_Type */ |
| connector->eld[5] &= ~(3 << 2); |
| if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) |
| connector->eld[5] |= (1 << 2); |
| |
| connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2; |
| |
| if (dev_priv->display.audio_codec_enable) |
| dev_priv->display.audio_codec_enable(connector, intel_encoder, |
| adjusted_mode); |
| |
| mutex_lock(&dev_priv->av_mutex); |
| intel_dig_port->audio_connector = connector; |
| /* referred in audio callbacks */ |
| dev_priv->dig_port_map[port] = intel_encoder; |
| mutex_unlock(&dev_priv->av_mutex); |
| |
| if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) |
| acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port); |
| } |
| |
| /** |
| * intel_audio_codec_disable - Disable the audio codec for HD audio |
| * @intel_encoder: encoder on which to disable audio |
| * |
| * The disable sequences must be performed before disabling the transcoder or |
| * port. |
| */ |
| void intel_audio_codec_disable(struct intel_encoder *intel_encoder) |
| { |
| struct drm_encoder *encoder = &intel_encoder->base; |
| struct drm_device *dev = encoder->dev; |
| struct drm_i915_private *dev_priv = to_i915(dev); |
| struct i915_audio_component *acomp = dev_priv->audio_component; |
| struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
| enum port port = intel_dig_port->port; |
| |
| if (dev_priv->display.audio_codec_disable) |
| dev_priv->display.audio_codec_disable(intel_encoder); |
| |
| mutex_lock(&dev_priv->av_mutex); |
| intel_dig_port->audio_connector = NULL; |
| dev_priv->dig_port_map[port] = NULL; |
| mutex_unlock(&dev_priv->av_mutex); |
| |
| if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) |
| acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port); |
| } |
| |
| /** |
| * intel_init_audio_hooks - Set up chip specific audio hooks |
| * @dev_priv: device private |
| */ |
| void intel_init_audio_hooks(struct drm_i915_private *dev_priv) |
| { |
| if (IS_G4X(dev_priv)) { |
| dev_priv->display.audio_codec_enable = g4x_audio_codec_enable; |
| dev_priv->display.audio_codec_disable = g4x_audio_codec_disable; |
| } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
| dev_priv->display.audio_codec_enable = ilk_audio_codec_enable; |
| dev_priv->display.audio_codec_disable = ilk_audio_codec_disable; |
| } else if (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8) { |
| dev_priv->display.audio_codec_enable = hsw_audio_codec_enable; |
| dev_priv->display.audio_codec_disable = hsw_audio_codec_disable; |
| } else if (HAS_PCH_SPLIT(dev_priv)) { |
| dev_priv->display.audio_codec_enable = ilk_audio_codec_enable; |
| dev_priv->display.audio_codec_disable = ilk_audio_codec_disable; |
| } |
| } |
| |
| static void i915_audio_component_get_power(struct device *dev) |
| { |
| intel_display_power_get(dev_to_i915(dev), POWER_DOMAIN_AUDIO); |
| } |
| |
| static void i915_audio_component_put_power(struct device *dev) |
| { |
| intel_display_power_put(dev_to_i915(dev), POWER_DOMAIN_AUDIO); |
| } |
| |
| static void i915_audio_component_codec_wake_override(struct device *dev, |
| bool enable) |
| { |
| struct drm_i915_private *dev_priv = dev_to_i915(dev); |
| u32 tmp; |
| |
| if (!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv)) |
| return; |
| |
| /* |
| * Enable/disable generating the codec wake signal, overriding the |
| * internal logic to generate the codec wake to controller. |
| */ |
| tmp = I915_READ(HSW_AUD_CHICKENBIT); |
| tmp &= ~SKL_AUD_CODEC_WAKE_SIGNAL; |
| I915_WRITE(HSW_AUD_CHICKENBIT, tmp); |
| usleep_range(1000, 1500); |
| |
| if (enable) { |
| tmp = I915_READ(HSW_AUD_CHICKENBIT); |
| tmp |= SKL_AUD_CODEC_WAKE_SIGNAL; |
| I915_WRITE(HSW_AUD_CHICKENBIT, tmp); |
| usleep_range(1000, 1500); |
| } |
| } |
| |
| /* Get CDCLK in kHz */ |
| static int i915_audio_component_get_cdclk_freq(struct device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev_to_i915(dev); |
| |
| if (WARN_ON_ONCE(!HAS_DDI(dev_priv))) |
| return -ENODEV; |
| |
| return dev_priv->cdclk_freq; |
| } |
| |
| static int i915_audio_component_sync_audio_rate(struct device *dev, |
| int port, int rate) |
| { |
| struct drm_i915_private *dev_priv = dev_to_i915(dev); |
| struct intel_encoder *intel_encoder; |
| struct intel_crtc *crtc; |
| struct drm_display_mode *mode; |
| struct i915_audio_component *acomp = dev_priv->audio_component; |
| enum pipe pipe = INVALID_PIPE; |
| u32 tmp; |
| int n; |
| int err = 0; |
| |
| /* HSW, BDW, SKL, KBL need this fix */ |
| if (!IS_SKYLAKE(dev_priv) && |
| !IS_KABYLAKE(dev_priv) && |
| !IS_BROADWELL(dev_priv) && |
| !IS_HASWELL(dev_priv)) |
| return 0; |
| |
| mutex_lock(&dev_priv->av_mutex); |
| /* 1. get the pipe */ |
| intel_encoder = dev_priv->dig_port_map[port]; |
| /* intel_encoder might be NULL for DP MST */ |
| if (!intel_encoder || !intel_encoder->base.crtc || |
| intel_encoder->type != INTEL_OUTPUT_HDMI) { |
| DRM_DEBUG_KMS("no valid port %c\n", port_name(port)); |
| err = -ENODEV; |
| goto unlock; |
| } |
| crtc = to_intel_crtc(intel_encoder->base.crtc); |
| pipe = crtc->pipe; |
| if (pipe == INVALID_PIPE) { |
| DRM_DEBUG_KMS("no pipe for the port %c\n", port_name(port)); |
| err = -ENODEV; |
| goto unlock; |
| } |
| |
| DRM_DEBUG_KMS("pipe %c connects port %c\n", |
| pipe_name(pipe), port_name(port)); |
| mode = &crtc->config->base.adjusted_mode; |
| |
| /* port must be valid now, otherwise the pipe will be invalid */ |
| acomp->aud_sample_rate[port] = rate; |
| |
| /* 2. check whether to set the N/CTS/M manually or not */ |
| if (!audio_rate_need_prog(crtc, mode)) { |
| tmp = I915_READ(HSW_AUD_CFG(pipe)); |
| tmp &= ~AUD_CONFIG_N_PROG_ENABLE; |
| I915_WRITE(HSW_AUD_CFG(pipe), tmp); |
| goto unlock; |
| } |
| |
| n = audio_config_get_n(mode, rate); |
| if (n == 0) { |
| DRM_DEBUG_KMS("Using automatic mode for N value on port %c\n", |
| port_name(port)); |
| tmp = I915_READ(HSW_AUD_CFG(pipe)); |
| tmp &= ~AUD_CONFIG_N_PROG_ENABLE; |
| I915_WRITE(HSW_AUD_CFG(pipe), tmp); |
| goto unlock; |
| } |
| |
| /* 3. set the N/CTS/M */ |
| tmp = I915_READ(HSW_AUD_CFG(pipe)); |
| tmp = audio_config_setup_n_reg(n, tmp); |
| I915_WRITE(HSW_AUD_CFG(pipe), tmp); |
| |
| unlock: |
| mutex_unlock(&dev_priv->av_mutex); |
| return err; |
| } |
| |
| static int i915_audio_component_get_eld(struct device *dev, int port, |
| bool *enabled, |
| unsigned char *buf, int max_bytes) |
| { |
| struct drm_i915_private *dev_priv = dev_to_i915(dev); |
| struct intel_encoder *intel_encoder; |
| struct intel_digital_port *intel_dig_port; |
| const u8 *eld; |
| int ret = -EINVAL; |
| |
| mutex_lock(&dev_priv->av_mutex); |
| intel_encoder = dev_priv->dig_port_map[port]; |
| /* intel_encoder might be NULL for DP MST */ |
| if (intel_encoder) { |
| ret = 0; |
| intel_dig_port = enc_to_dig_port(&intel_encoder->base); |
| *enabled = intel_dig_port->audio_connector != NULL; |
| if (*enabled) { |
| eld = intel_dig_port->audio_connector->eld; |
| ret = drm_eld_size(eld); |
| memcpy(buf, eld, min(max_bytes, ret)); |
| } |
| } |
| |
| mutex_unlock(&dev_priv->av_mutex); |
| return ret; |
| } |
| |
| static const struct i915_audio_component_ops i915_audio_component_ops = { |
| .owner = THIS_MODULE, |
| .get_power = i915_audio_component_get_power, |
| .put_power = i915_audio_component_put_power, |
| .codec_wake_override = i915_audio_component_codec_wake_override, |
| .get_cdclk_freq = i915_audio_component_get_cdclk_freq, |
| .sync_audio_rate = i915_audio_component_sync_audio_rate, |
| .get_eld = i915_audio_component_get_eld, |
| }; |
| |
| static int i915_audio_component_bind(struct device *i915_dev, |
| struct device *hda_dev, void *data) |
| { |
| struct i915_audio_component *acomp = data; |
| struct drm_i915_private *dev_priv = dev_to_i915(i915_dev); |
| int i; |
| |
| if (WARN_ON(acomp->ops || acomp->dev)) |
| return -EEXIST; |
| |
| drm_modeset_lock_all(dev_priv->dev); |
| acomp->ops = &i915_audio_component_ops; |
| acomp->dev = i915_dev; |
| BUILD_BUG_ON(MAX_PORTS != I915_MAX_PORTS); |
| for (i = 0; i < ARRAY_SIZE(acomp->aud_sample_rate); i++) |
| acomp->aud_sample_rate[i] = 0; |
| dev_priv->audio_component = acomp; |
| drm_modeset_unlock_all(dev_priv->dev); |
| |
| return 0; |
| } |
| |
| static void i915_audio_component_unbind(struct device *i915_dev, |
| struct device *hda_dev, void *data) |
| { |
| struct i915_audio_component *acomp = data; |
| struct drm_i915_private *dev_priv = dev_to_i915(i915_dev); |
| |
| drm_modeset_lock_all(dev_priv->dev); |
| acomp->ops = NULL; |
| acomp->dev = NULL; |
| dev_priv->audio_component = NULL; |
| drm_modeset_unlock_all(dev_priv->dev); |
| } |
| |
| static const struct component_ops i915_audio_component_bind_ops = { |
| .bind = i915_audio_component_bind, |
| .unbind = i915_audio_component_unbind, |
| }; |
| |
| /** |
| * i915_audio_component_init - initialize and register the audio component |
| * @dev_priv: 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). |
| */ |
| void i915_audio_component_init(struct drm_i915_private *dev_priv) |
| { |
| int ret; |
| |
| ret = component_add(dev_priv->dev->dev, &i915_audio_component_bind_ops); |
| if (ret < 0) { |
| DRM_ERROR("failed to add audio component (%d)\n", ret); |
| /* continue with reduced functionality */ |
| return; |
| } |
| |
| dev_priv->audio_component_registered = true; |
| } |
| |
| /** |
| * i915_audio_component_cleanup - deregister the audio component |
| * @dev_priv: i915 device instance |
| * |
| * Deregisters the audio component, breaking any existing binding to the |
| * corresponding snd_hda_intel driver's master component. |
| */ |
| void i915_audio_component_cleanup(struct drm_i915_private *dev_priv) |
| { |
| if (!dev_priv->audio_component_registered) |
| return; |
| |
| component_del(dev_priv->dev->dev, &i915_audio_component_bind_ops); |
| dev_priv->audio_component_registered = false; |
| } |