[alsa-devel] [PATCH] snd-aoa: handle older machines
Johannes Berg
johannes at sipsolutions.net
Thu Jan 15 18:21:48 CET 2009
This patch changes snd-aoa to handle some older machines that are
currently handled by snd-powermac. snd-aoa has a number of advantages
though, notably it can autoload better and is generally a more modern
driver.
By hardcoding the accepted device-ids (last hunk of the patch) I'm
trying to avoid regressions because this driver will otherwise load
automatically and not let snd-powermac load. People who are unhappy
with snd-powermac and have a device-id property in the device tree
are encouraged to read this patch and make a patch to amend this as
appropriate.
Signed-off-by: Johannes Berg <johannes at sipsolutions.net>
---
sound/aoa/fabrics/layout.c | 74 ++++++++++++++++++++++++++++++---------
sound/aoa/soundbus/i2sbus/core.c | 22 ++++++++---
2 files changed, 74 insertions(+), 22 deletions(-)
--- wireless-testing.orig/sound/aoa/fabrics/layout.c 2009-01-13 17:01:04.000000000 +0100
+++ wireless-testing/sound/aoa/fabrics/layout.c 2009-01-15 18:15:28.000000000 +0100
@@ -1,16 +1,14 @@
/*
- * Apple Onboard Audio driver -- layout fabric
+ * Apple Onboard Audio driver -- layout/machine id fabric
*
- * Copyright 2006 Johannes Berg <johannes at sipsolutions.net>
+ * Copyright 2006-2008 Johannes Berg <johannes at sipsolutions.net>
*
* GPL v2, can be found in COPYING.
*
*
- * This fabric module looks for sound codecs
- * based on the layout-id property in the device tree.
- *
+ * This fabric module looks for sound codecs based on the
+ * layout-id or device-id property in the device tree.
*/
-
#include <asm/prom.h>
#include <linux/list.h>
#include <linux/module.h>
@@ -63,7 +61,7 @@ struct codec_connect_info {
#define LAYOUT_FLAG_COMBO_LINEOUT_SPDIF (1<<0)
struct layout {
- unsigned int layout_id;
+ unsigned int layout_id, device_id;
struct codec_connect_info codecs[MAX_CODECS_PER_BUS];
int flags;
@@ -111,6 +109,10 @@ MODULE_ALIAS("sound-layout-96");
MODULE_ALIAS("sound-layout-98");
MODULE_ALIAS("sound-layout-100");
+MODULE_ALIAS("aoa-device-id-14");
+MODULE_ALIAS("aoa-device-id-22");
+MODULE_ALIAS("aoa-device-id-35");
+
/* onyx with all but microphone connected */
static struct codec_connection onyx_connections_nomic[] = {
{
@@ -518,6 +520,27 @@ static struct layout layouts[] = {
.connections = onyx_connections_noheadphones,
},
},
+ /* PowerMac3,4 */
+ { .device_id = 14,
+ .codecs[0] = {
+ .name = "tas",
+ .connections = tas_connections_noline,
+ },
+ },
+ /* PowerMac3,6 */
+ { .device_id = 22,
+ .codecs[0] = {
+ .name = "tas",
+ .connections = tas_connections_all,
+ },
+ },
+ /* PowerBook5,2 */
+ { .device_id = 35,
+ .codecs[0] = {
+ .name = "tas",
+ .connections = tas_connections_all,
+ },
+ },
{}
};
@@ -526,7 +549,7 @@ static struct layout *find_layout_by_id(
struct layout *l;
l = layouts;
- while (l->layout_id) {
+ while (l->codecs[0].name) {
if (l->layout_id == id)
return l;
l++;
@@ -534,6 +557,19 @@ static struct layout *find_layout_by_id(
return NULL;
}
+static struct layout *find_layout_by_device(unsigned int id)
+{
+ struct layout *l;
+
+ l = layouts;
+ while (l->codecs[0].name) {
+ if (l->device_id == id)
+ return l;
+ l++;
+ }
+ return NULL;
+}
+
static void use_layout(struct layout *l)
{
int i;
@@ -938,8 +974,8 @@ static struct aoa_fabric layout_fabric =
static int aoa_fabric_layout_probe(struct soundbus_dev *sdev)
{
struct device_node *sound = NULL;
- const unsigned int *layout_id;
- struct layout *layout;
+ const unsigned int *id;
+ struct layout *layout = NULL;
struct layout_dev *ldev = NULL;
int err;
@@ -952,15 +988,18 @@ static int aoa_fabric_layout_probe(struc
if (sound->type && strcasecmp(sound->type, "soundchip") == 0)
break;
}
- if (!sound) return -ENODEV;
+ if (!sound)
+ return -ENODEV;
- layout_id = of_get_property(sound, "layout-id", NULL);
- if (!layout_id)
- goto outnodev;
- printk(KERN_INFO "snd-aoa-fabric-layout: found bus with layout %d\n",
- *layout_id);
+ id = of_get_property(sound, "layout-id", NULL);
+ if (id) {
+ layout = find_layout_by_id(*id);
+ } else {
+ id = of_get_property(sound, "device-id", NULL);
+ if (id)
+ layout = find_layout_by_device(*id);
+ }
- layout = find_layout_by_id(*layout_id);
if (!layout) {
printk(KERN_ERR "snd-aoa-fabric-layout: unknown layout\n");
goto outnodev;
@@ -976,6 +1015,7 @@ static int aoa_fabric_layout_probe(struc
ldev->layout = layout;
ldev->gpio.node = sound->parent;
switch (layout->layout_id) {
+ case 0: /* anything with device_id, not layout_id */
case 41: /* that unknown machine no one seems to have */
case 51: /* PowerBook5,4 */
case 58: /* Mac Mini */
--- wireless-testing.orig/sound/aoa/soundbus/i2sbus/core.c 2009-01-13 17:01:04.000000000 +0100
+++ wireless-testing/sound/aoa/soundbus/i2sbus/core.c 2009-01-15 18:15:34.000000000 +0100
@@ -1,7 +1,7 @@
/*
* i2sbus driver
*
- * Copyright 2006 Johannes Berg <johannes at sipsolutions.net>
+ * Copyright 2006-2008 Johannes Berg <johannes at sipsolutions.net>
*
* GPL v2, can be found in COPYING.
*/
@@ -186,13 +186,25 @@ static int i2sbus_add_dev(struct macio_d
}
}
if (i == 1) {
- const u32 *layout_id =
- of_get_property(sound, "layout-id", NULL);
- if (layout_id) {
- layout = *layout_id;
+ const u32 *id = of_get_property(sound, "layout-id", NULL);
+
+ if (id) {
+ layout = *id;
snprintf(dev->sound.modalias, 32,
"sound-layout-%d", layout);
ok = 1;
+ } else {
+ id = of_get_property(sound, "device-id", NULL);
+ /*
+ * We probably cannot handle all device-id machines,
+ * so restrict to those we do handle for now.
+ */
+ if (id && (*id == 22 || *id == 14 || *id == 35)) {
+ snprintf(dev->sound.modalias, 32,
+ "aoa-device-id-%d", *id);
+ ok = 1;
+ layout = -1;
+ }
}
}
/* for the time being, until we can handle non-layout-id
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