From 67feca1e9714e6a1763cad069752283706a1601a Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Wed, 29 Sep 2021 01:58:02 +0300
Subject: drm/i915: constify the audio function vtable
Git-commit: 0a108bca94a8280ddfe2a87ad6b4173db6f0a454
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Move the functions into read-only tables.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5a481307a5daab40a506c3b9a64b0b37e01a1a41.1632869550.git.jani.nikula@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_audio.c | 43 ++++++++++++++--------
drivers/gpu/drm/i915/i915_drv.h | 2 +-
2 files changed, 28 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index bf96d1529775..03e8c05a74f6 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -848,10 +848,10 @@ void intel_audio_codec_enable(struct intel_encoder *encoder,
connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
- if (dev_priv->audio_funcs.audio_codec_enable)
- dev_priv->audio_funcs.audio_codec_enable(encoder,
- crtc_state,
- conn_state);
+ if (dev_priv->audio_funcs)
+ dev_priv->audio_funcs->audio_codec_enable(encoder,
+ crtc_state,
+ conn_state);
mutex_lock(&dev_priv->av_mutex);
encoder->audio_connector = connector;
@@ -893,10 +893,10 @@ void intel_audio_codec_disable(struct intel_encoder *encoder,
enum port port = encoder->port;
enum pipe pipe = crtc->pipe;
- if (dev_priv->audio_funcs.audio_codec_disable)
- dev_priv->audio_funcs.audio_codec_disable(encoder,
- old_crtc_state,
- old_conn_state);
+ if (dev_priv->audio_funcs)
+ dev_priv->audio_funcs->audio_codec_disable(encoder,
+ old_crtc_state,
+ old_conn_state);
mutex_lock(&dev_priv->av_mutex);
encoder->audio_connector = NULL;
@@ -915,6 +915,21 @@ void intel_audio_codec_disable(struct intel_encoder *encoder,
intel_lpe_audio_notify(dev_priv, pipe, port, NULL, 0, false);
}
+static const struct intel_audio_funcs g4x_audio_funcs = {
+ .audio_codec_enable = g4x_audio_codec_enable,
+ .audio_codec_disable = g4x_audio_codec_disable,
+};
+
+static const struct intel_audio_funcs ilk_audio_funcs = {
+ .audio_codec_enable = ilk_audio_codec_enable,
+ .audio_codec_disable = ilk_audio_codec_disable,
+};
+
+static const struct intel_audio_funcs hsw_audio_funcs = {
+ .audio_codec_enable = hsw_audio_codec_enable,
+ .audio_codec_disable = hsw_audio_codec_disable,
+};
+
/**
* intel_init_audio_hooks - Set up chip specific audio hooks
* @dev_priv: device private
@@ -922,17 +937,13 @@ void intel_audio_codec_disable(struct intel_encoder *encoder,
void intel_init_audio_hooks(struct drm_i915_private *dev_priv)
{
if (IS_G4X(dev_priv)) {
- dev_priv->audio_funcs.audio_codec_enable = g4x_audio_codec_enable;
- dev_priv->audio_funcs.audio_codec_disable = g4x_audio_codec_disable;
+ dev_priv->audio_funcs = &g4x_audio_funcs;
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- dev_priv->audio_funcs.audio_codec_enable = ilk_audio_codec_enable;
- dev_priv->audio_funcs.audio_codec_disable = ilk_audio_codec_disable;
+ dev_priv->audio_funcs = &ilk_audio_funcs;
} else if (IS_HASWELL(dev_priv) || DISPLAY_VER(dev_priv) >= 8) {
- dev_priv->audio_funcs.audio_codec_enable = hsw_audio_codec_enable;
- dev_priv->audio_funcs.audio_codec_disable = hsw_audio_codec_disable;
+ dev_priv->audio_funcs = &hsw_audio_funcs;
} else if (HAS_PCH_SPLIT(dev_priv)) {
- dev_priv->audio_funcs.audio_codec_enable = ilk_audio_codec_enable;
- dev_priv->audio_funcs.audio_codec_disable = ilk_audio_codec_disable;
+ dev_priv->audio_funcs = &ilk_audio_funcs;
}
}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1690f38e0b02..45f64aa54264 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1003,7 +1003,7 @@ struct drm_i915_private {
const struct intel_color_funcs *color_funcs;
/* Display internal audio functions */
- struct intel_audio_funcs audio_funcs;
+ const struct intel_audio_funcs *audio_funcs;
/* Display CDCLK functions */
struct intel_cdclk_funcs cdclk_funcs;
--
2.38.1