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_via.c b/sound/pci/hda/patch_via.c
index 05182be..6e4d01d 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -47,7 +47,6 @@
#include <sound/asoundef.h>
#include "hda_codec.h"
#include "hda_local.h"
-#include "hda_patch.h"
/* amp values */
#define AMP_VAL_IDX_SHIFT 19
@@ -3249,7 +3248,7 @@
/*
* patch entries
*/
-struct hda_codec_preset snd_hda_preset_via[] = {
+static struct hda_codec_preset snd_hda_preset_via[] = {
{ .id = 0x11061708, .name = "VIA VT1708", .patch = patch_vt1708},
{ .id = 0x11061709, .name = "VIA VT1708", .patch = patch_vt1708},
{ .id = 0x1106170A, .name = "VIA VT1708", .patch = patch_vt1708},
@@ -3320,3 +3319,26 @@
.patch = patch_vt1702},
{} /* terminator */
};
+
+MODULE_ALIAS("snd-hda-codec-id:1106*");
+
+static struct hda_codec_preset_list via_list = {
+ .preset = snd_hda_preset_via,
+ .owner = THIS_MODULE,
+};
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("VIA HD-audio codec");
+
+static int __init patch_via_init(void)
+{
+ return snd_hda_add_codec_preset(&via_list);
+}
+
+static void __exit patch_via_exit(void)
+{
+ snd_hda_delete_codec_preset(&via_list);
+}
+
+module_init(patch_via_init)
+module_exit(patch_via_exit)