ALSA: hda - Modularize HD-audio driver
Split the monolithc HD-audio driver into several pieces:
- snd-hda-intel HD-audio PCI controller driver; loaded via udev
- snd-hda-codec HD-audio codec bus driver
- snd-hda-codec-* Specific HD-audio codec drivers
When built as modules, snd-hda-codec (that is invoked by snd-hda-intel)
looks up the codec vendor ID and loads the corresponding codec module
automatically via request_module().
When built in a kernel, each codec drivers are statically hooked up
before probing the PCI.
This patch adds appropriate EXPORT_SYMBOL_GPL()'s and the module
information for each driver, and driver-linking codes between
codec-bus and codec drivers.
TODO:
- Avoid EXPORT_SYMBOL*() when built-in kernel
- Restore __devinit appropriately depending on the condition
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_nvhdmi.c b/sound/pci/hda/patch_nvhdmi.c
index 1360d54..e23de55 100644
--- a/sound/pci/hda/patch_nvhdmi.c
+++ b/sound/pci/hda/patch_nvhdmi.c
@@ -28,7 +28,6 @@
#include <sound/core.h>
#include "hda_codec.h"
#include "hda_local.h"
-#include "hda_patch.h"
struct nvhdmi_spec {
struct hda_multi_out multiout;
@@ -159,8 +158,32 @@
/*
* patch entries
*/
-struct hda_codec_preset snd_hda_preset_nvhdmi[] = {
+static struct hda_codec_preset snd_hda_preset_nvhdmi[] = {
{ .id = 0x10de0002, .name = "NVIDIA MCP78 HDMI", .patch = patch_nvhdmi },
{ .id = 0x10de0007, .name = "NVIDIA MCP7A HDMI", .patch = patch_nvhdmi },
{} /* terminator */
};
+
+MODULE_ALIAS("snd-hda-codec-id:10de0002");
+MODULE_ALIAS("snd-hda-codec-id:10de0007");
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Nvidia HDMI HD-audio codec");
+
+static struct hda_codec_preset_list nvhdmi_list = {
+ .preset = snd_hda_preset_nvhdmi,
+ .owner = THIS_MODULE,
+};
+
+static int __init patch_nvhdmi_init(void)
+{
+ return snd_hda_add_codec_preset(&nvhdmi_list);
+}
+
+static void __exit patch_nvhdmi_exit(void)
+{
+ snd_hda_delete_codec_preset(&nvhdmi_list);
+}
+
+module_init(patch_nvhdmi_init)
+module_exit(patch_nvhdmi_exit)