[ALSA] snd-aoa: add snd-aoa

This large patch adds all of snd-aoa.
Consisting of many modules, it currently replaces snd-powermac
for all layout-id based machines and handles many more (for
example new powerbooks and powermacs with digital output that
previously couldn't be used at all).
It also has support for all layout-IDs that Apple has (judging
from their Info.plist file) but not all are tested.
The driver currently has 2 known regressions over snd-powermac:
 * it doesn't handle powermac 7,2 and 7,3
 * it doesn't have a DRC control on snapper-based machines
I will fix those during the 2.6.18 development cycle.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

3 files changed, 1122 insertions, 0 deletions

diff --git a/sound/aoa/fabrics/Kconfig b/sound/aoa/fabrics/Kconfig
new file mode 100644
index 000000000000..c3bc7705c86a
--- /dev/null
+++ b/sound/aoa/fabrics/Kconfig
@@ -0,0 +1,12 @@
+config SND_AOA_FABRIC_LAYOUT
+        tristate "layout-id fabric"
+        depends SND_AOA
+        select SND_AOA_SOUNDBUS
+        select SND_AOA_SOUNDBUS_I2S
+        ---help---
+        This enables the layout-id fabric for the Apple Onboard
+        Audio driver, the module holding it all together
+        based on the device-tree's layout-id property.
+        
+        If you are unsure and have a later Apple machine,
+        compile it as a module.
diff --git a/sound/aoa/fabrics/Makefile b/sound/aoa/fabrics/Makefile
new file mode 100644
index 000000000000..55fc5e7e52cf
--- /dev/null
+++ b/sound/aoa/fabrics/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_SND_AOA_FABRIC_LAYOUT) += snd-aoa-fabric-layout.o
diff --git a/sound/aoa/fabrics/snd-aoa-fabric-layout.c b/sound/aoa/fabrics/snd-aoa-fabric-layout.c
new file mode 100644
index 000000000000..04a7238e9494
--- /dev/null
+++ b/sound/aoa/fabrics/snd-aoa-fabric-layout.c
@@ -0,0 +1,1109 @@
+/*
+ * Apple Onboard Audio driver -- layout fabric
+ *
+ * Copyright 2006 Johannes Berg <johannes@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.
+ *
+ */
+
+#include <asm/prom.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include "../aoa.h"
+#include "../soundbus/soundbus.h"
+
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Layout-ID fabric for snd-aoa");
+
+#define MAX_CODECS_PER_BUS      2
+
+/* These are the connections the layout fabric
+ * knows about. It doesn't really care about the
+ * input ones, but I thought I'd separate them
+ * to give them proper names. The thing is that
+ * Apple usually will distinguish the active output
+ * by GPIOs, while the active input is set directly
+ * on the codec. Hence we here tell the codec what
+ * we think is connected. This information is hard-
+ * coded below ... */
+#define CC_SPEAKERS     (1<<0)
+#define CC_HEADPHONE    (1<<1)
+#define CC_LINEOUT      (1<<2)
+#define CC_DIGITALOUT   (1<<3)
+#define CC_LINEIN       (1<<4)
+#define CC_MICROPHONE   (1<<5)
+#define CC_DIGITALIN    (1<<6)
+/* pretty bogus but users complain...
+ * This is a flag saying that the LINEOUT
+ * should be renamed to HEADPHONE.
+ * be careful with input detection! */
+#define CC_LINEOUT_LABELLED_HEADPHONE   (1<<7)
+
+struct codec_connection {
+        /* CC_ flags from above */
+        int connected;
+        /* codec dependent bit to be set in the aoa_codec.connected field.
+         * This intentionally doesn't have any generic flags because the
+         * fabric has to know the codec anyway and all codecs might have
+         * different connectors */
+        int codec_bit;
+};
+
+struct codec_connect_info {
+        char *name;
+        struct codec_connection *connections;
+};
+
+#define LAYOUT_FLAG_COMBO_LINEOUT_SPDIF (1<<0)
+
+struct layout {
+        unsigned int layout_id;
+        struct codec_connect_info codecs[MAX_CODECS_PER_BUS];
+        int flags;
+        
+        /* if busname is not assigned, we use 'Master' below,
+         * so that our layout table doesn't need to be filled
+         * too much.
+         * We only assign these two if we expect to find more
+         * than one soundbus, i.e. on those machines with
+         * multiple layout-ids */
+        char *busname;
+        int pcmid;
+};
+
+MODULE_ALIAS("sound-layout-41");
+MODULE_ALIAS("sound-layout-45");
+MODULE_ALIAS("sound-layout-51");
+MODULE_ALIAS("sound-layout-58");
+MODULE_ALIAS("sound-layout-60");
+MODULE_ALIAS("sound-layout-61");
+MODULE_ALIAS("sound-layout-64");
+MODULE_ALIAS("sound-layout-65");
+MODULE_ALIAS("sound-layout-68");
+MODULE_ALIAS("sound-layout-69");
+MODULE_ALIAS("sound-layout-70");
+MODULE_ALIAS("sound-layout-72");
+MODULE_ALIAS("sound-layout-80");
+MODULE_ALIAS("sound-layout-82");
+MODULE_ALIAS("sound-layout-84");
+MODULE_ALIAS("sound-layout-86");
+MODULE_ALIAS("sound-layout-92");
+
+/* onyx with all but microphone connected */
+static struct codec_connection onyx_connections_nomic[] = {
+        {
+                .connected = CC_SPEAKERS | CC_HEADPHONE | CC_LINEOUT,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_DIGITALOUT,
+                .codec_bit = 1,
+        },
+        {
+                .connected = CC_LINEIN,
+                .codec_bit = 2,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+/* onyx on machines without headphone */
+static struct codec_connection onyx_connections_noheadphones[] = {
+        {
+                .connected = CC_SPEAKERS | CC_LINEOUT |
+                             CC_LINEOUT_LABELLED_HEADPHONE,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_DIGITALOUT,
+                .codec_bit = 1,
+        },
+        /* FIXME: are these correct? probably not for all the machines
+         * below ... If not this will need separating. */
+        {
+                .connected = CC_LINEIN,
+                .codec_bit = 2,
+        },
+        {
+                .connected = CC_MICROPHONE,
+                .codec_bit = 3,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+/* onyx on machines with real line-out */
+static struct codec_connection onyx_connections_reallineout[] = {
+        {
+                .connected = CC_SPEAKERS | CC_LINEOUT | CC_HEADPHONE,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_DIGITALOUT,
+                .codec_bit = 1,
+        },
+        {
+                .connected = CC_LINEIN,
+                .codec_bit = 2,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines without line out */
+static struct codec_connection tas_connections_nolineout[] = {
+        {
+                .connected = CC_SPEAKERS | CC_HEADPHONE,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_LINEIN,
+                .codec_bit = 2,
+        },
+        {
+                .connected = CC_MICROPHONE,
+                .codec_bit = 3,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines with neither line out nor line in */
+static struct codec_connection tas_connections_noline[] = {
+        {
+                .connected = CC_SPEAKERS | CC_HEADPHONE,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_MICROPHONE,
+                .codec_bit = 3,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines without microphone */
+static struct codec_connection tas_connections_nomic[] = {
+        {
+                .connected = CC_SPEAKERS | CC_HEADPHONE | CC_LINEOUT,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_LINEIN,
+                .codec_bit = 2,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines with everything connected */
+static struct codec_connection tas_connections_all[] = {
+        {
+                .connected = CC_SPEAKERS | CC_HEADPHONE | CC_LINEOUT,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_LINEIN,
+                .codec_bit = 2,
+        },
+        {
+                .connected = CC_MICROPHONE,
+                .codec_bit = 3,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection toonie_connections[] = {
+        {
+                .connected = CC_SPEAKERS | CC_HEADPHONE,
+                .codec_bit = 0,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection topaz_input[] = {
+        {
+                .connected = CC_DIGITALIN,
+                .codec_bit = 0,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection topaz_output[] = {
+        {
+                .connected = CC_DIGITALOUT,
+                .codec_bit = 1,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection topaz_inout[] = {
+        {
+                .connected = CC_DIGITALIN,
+                .codec_bit = 0,
+        },
+        {
+                .connected = CC_DIGITALOUT,
+                .codec_bit = 1,
+        },
+        {} /* terminate array by .connected == 0 */
+};
+
+static struct layout layouts[] = {
+        /* last PowerBooks (15" Oct 2005) */
+        { .layout_id = 82,
+          .flags = LAYOUT_FLAG_COMBO_LINEOUT_SPDIF,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+          .codecs[1] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        /* PowerMac9,1 */
+        { .layout_id = 60,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_reallineout,
+          },
+        },
+        /* PowerMac9,1 */
+        { .layout_id = 61,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        /* PowerBook5,7 */
+        { .layout_id = 64,
+          .flags = LAYOUT_FLAG_COMBO_LINEOUT_SPDIF,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+        },
+        /* PowerBook5,7 */
+        { .layout_id = 65,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        /* PowerBook5,9 [17" Oct 2005] */
+        { .layout_id = 84,
+          .flags = LAYOUT_FLAG_COMBO_LINEOUT_SPDIF,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+          .codecs[1] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        /* PowerMac8,1 */
+        { .layout_id = 45,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+          .codecs[1] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        /* Quad PowerMac (analog in, analog/digital out) */
+        { .layout_id = 68,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_nomic,
+          },
+        },
+        /* Quad PowerMac (digital in) */
+        { .layout_id = 69,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+          .busname = "digital in", .pcmid = 1 },
+        /* Early 2005 PowerBook (PowerBook 5,6) */
+        { .layout_id = 70,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_nolineout,
+          },
+        },
+        /* PowerBook 5,4 */
+        { .layout_id = 51,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_nolineout,
+          },
+        },
+        /* PowerBook6,7 */
+        { .layout_id = 80,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_noline,
+          },
+        },
+        /* PowerBook6,8 */
+        { .layout_id = 72,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_nolineout,
+          },
+        },
+        /* PowerMac8,2 */
+        { .layout_id = 86,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_nomic,
+          },
+          .codecs[1] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        /* PowerBook6,7 */
+        { .layout_id = 92,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_nolineout,
+          },
+        },
+        /* PowerMac10,1 (Mac Mini) */
+        { .layout_id = 58,
+          .codecs[0] = {
+                .name = "toonie",
+                .connections = toonie_connections,
+          },
+        },
+        /* unknown, untested, but this comes from Apple */
+        { .layout_id = 41,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_all,
+          },
+        },
+        { .layout_id = 36,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_nomic,
+          },
+          .codecs[1] = {
+                .name = "topaz",
+                .connections = topaz_inout,
+          },
+        },
+        { .layout_id = 47,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+        },
+        { .layout_id = 48,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        { .layout_id = 49,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_nomic,
+          },
+        },
+        { .layout_id = 50,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        { .layout_id = 56,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+        },
+        { .layout_id = 57,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        { .layout_id = 62,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+          .codecs[1] = {
+                .name = "topaz",
+                .connections = topaz_output,
+          },
+        },
+        { .layout_id = 66,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+        },
+        { .layout_id = 67,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+        },
+        { .layout_id = 76,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_nomic,
+          },
+          .codecs[1] = {
+                .name = "topaz",
+                .connections = topaz_inout,
+          },
+        },
+        { .layout_id = 90,
+          .codecs[0] = {
+                .name = "tas",
+                .connections = tas_connections_noline,
+          },
+        },
+        { .layout_id = 94,
+          .codecs[0] = {
+                .name = "onyx",
+                /* but it has an external mic?? how to select? */
+                .connections = onyx_connections_noheadphones,
+          },
+        },
+        { .layout_id = 96,
+          .codecs[0] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+        },
+        { .layout_id = 98,
+          .codecs[0] = {
+                .name = "toonie",
+                .connections = toonie_connections,
+          },
+        },
+        { .layout_id = 100,
+          .codecs[0] = {
+                .name = "topaz",
+                .connections = topaz_input,
+          },
+          .codecs[1] = {
+                .name = "onyx",
+                .connections = onyx_connections_noheadphones,
+          },
+        },
+        {}
+};
+
+static struct layout *find_layout_by_id(unsigned int id)
+{
+        struct layout *l;
+
+        l = layouts;
+        while (l->layout_id) {
+                if (l->layout_id == id)
+                        return l;
+                l++;
+        }
+        return NULL;
+}
+
+static void use_layout(struct layout *l)
+{
+        int i;
+
+        for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+                if (l->codecs[i].name) {
+                        request_module("snd-aoa-codec-%s", l->codecs[i].name);
+                }
+        }
+        /* now we wait for the codecs to call us back */
+}
+
+struct layout_dev;
+
+struct layout_dev_ptr {
+        struct layout_dev *ptr;
+};
+
+struct layout_dev {
+        struct list_head list;
+        struct soundbus_dev *sdev;
+        struct device_node *sound;
+        struct aoa_codec *codecs[MAX_CODECS_PER_BUS];
+        struct layout *layout;
+        struct gpio_runtime gpio;
+
+        /* we need these for headphone/lineout detection */
+        struct snd_kcontrol *headphone_ctrl;
+        struct snd_kcontrol *lineout_ctrl;
+        struct snd_kcontrol *speaker_ctrl;
+        struct snd_kcontrol *headphone_detected_ctrl;
+        struct snd_kcontrol *lineout_detected_ctrl;
+
+        struct layout_dev_ptr selfptr_headphone;
+        struct layout_dev_ptr selfptr_lineout;
+
+        u32 have_lineout_detect:1,
+            have_headphone_detect:1,
+            switch_on_headphone:1,
+            switch_on_lineout:1;
+};
+
+static LIST_HEAD(layouts_list);
+static int layouts_list_items;
+/* this can go away but only if we allow multiple cards,
+ * make the fabric handle all the card stuff, etc... */
+static struct layout_dev *layout_device;
+
+static int control_info(struct snd_kcontrol *kcontrol,
+                        struct snd_ctl_elem_info *uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 1;
+        return 0;
+}
+
+#define AMP_CONTROL(n, description)                                     \
+static int n##_control_get(struct snd_kcontrol *kcontrol,               \
+                           struct snd_ctl_elem_value *ucontrol)         \
+{                                                                       \
+        struct gpio_runtime *gpio = snd_kcontrol_chip(kcontrol);        \
+        if (gpio->methods && gpio->methods->get_##n)                    \
+                ucontrol->value.integer.value[0] =                      \
+                        gpio->methods->get_##n(gpio);                   \
+        return 0;                                                       \
+}                                                                       \
+static int n##_control_put(struct snd_kcontrol *kcontrol,               \
+                           struct snd_ctl_elem_value *ucontrol)         \
+{                                                                       \
+        struct gpio_runtime *gpio = snd_kcontrol_chip(kcontrol);        \
+        if (gpio->methods && gpio->methods->get_##n)                    \
+                gpio->methods->set_##n(gpio,                            \
+                        ucontrol->value.integer.value[0]);              \
+        return 1;                                                       \
+}                                                                       \
+static struct snd_kcontrol_new n##_ctl = {                              \
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,                            \
+        .name = description,                                            \
+        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,                      \
+        .info = control_info,                                           \
+        .get = n##_control_get,                                         \
+        .put = n##_control_put,                                         \
+}
+
+AMP_CONTROL(headphone, "Headphone Switch");
+AMP_CONTROL(speakers, "Speakers Switch");
+AMP_CONTROL(lineout, "Line-Out Switch");
+
+static int detect_choice_get(struct snd_kcontrol *kcontrol,
+                             struct snd_ctl_elem_value *ucontrol)
+{
+        struct layout_dev *ldev = snd_kcontrol_chip(kcontrol);
+
+        switch (kcontrol->private_value) {
+        case 0:
+                ucontrol->value.integer.value[0] = ldev->switch_on_headphone;
+                break;
+        case 1:
+                ucontrol->value.integer.value[0] = ldev->switch_on_lineout;
+                break;
+        default:
+                return -ENODEV;
+        }
+        return 0;
+}
+
+static int detect_choice_put(struct snd_kcontrol *kcontrol,
+                             struct snd_ctl_elem_value *ucontrol)
+{
+        struct layout_dev *ldev = snd_kcontrol_chip(kcontrol);
+
+        switch (kcontrol->private_value) {
+        case 0:
+                ldev->switch_on_headphone = !!ucontrol->value.integer.value[0];
+                break;
+        case 1:
+                ldev->switch_on_lineout = !!ucontrol->value.integer.value[0];
+                break;
+        default:
+                return -ENODEV;
+        }
+        return 1;
+}
+
+static struct snd_kcontrol_new headphone_detect_choice = {
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name = "Headphone Detect Autoswitch",
+        .info = control_info,
+        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+        .get = detect_choice_get,
+        .put = detect_choice_put,
+        .private_value = 0,
+};
+
+static struct snd_kcontrol_new lineout_detect_choice = {
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name = "Line-Out Detect Autoswitch",
+        .info = control_info,
+        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+        .get = detect_choice_get,
+        .put = detect_choice_put,
+        .private_value = 1,
+};
+
+static int detected_get(struct snd_kcontrol *kcontrol,
+                        struct snd_ctl_elem_value *ucontrol)
+{
+        struct layout_dev *ldev = snd_kcontrol_chip(kcontrol);
+        int v;
+
+        switch (kcontrol->private_value) {
+        case 0:
+                v = ldev->gpio.methods->get_detect(&ldev->gpio,
+                                                   AOA_NOTIFY_HEADPHONE);
+                break;
+        case 1:
+                v = ldev->gpio.methods->get_detect(&ldev->gpio,
+                                                   AOA_NOTIFY_LINE_OUT);
+                break;
+        default:
+                return -ENODEV;
+        }
+        ucontrol->value.integer.value[0] = v;
+        return 0;
+}
+
+static struct snd_kcontrol_new headphone_detected = {
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name = "Headphone Detected",
+        .info = control_info,
+        .access = SNDRV_CTL_ELEM_ACCESS_READ,
+        .get = detected_get,
+        .private_value = 0,
+};
+
+static struct snd_kcontrol_new lineout_detected = {
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name = "Line-Out Detected",
+        .info = control_info,
+        .access = SNDRV_CTL_ELEM_ACCESS_READ,
+        .get = detected_get,
+        .private_value = 1,
+};
+
+static int check_codec(struct aoa_codec *codec,
+                       struct layout_dev *ldev,
+                       struct codec_connect_info *cci)
+{
+        u32 *ref;
+        char propname[32];
+        struct codec_connection *cc;
+
+        /* if the codec has a 'codec' node, we require a reference */
+        if (codec->node && (strcmp(codec->node->name, "codec") == 0)) {
+                snprintf(propname, sizeof(propname),
+                         "platform-%s-codec-ref", codec->name);
+                ref = (u32*)get_property(ldev->sound, propname, NULL);
+                if (!ref) {
+                        printk(KERN_INFO "snd-aoa-fabric-layout: "
+                                "required property %s not present\n", propname);
+                        return -ENODEV;
+                }
+                if (*ref != codec->node->linux_phandle) {
+                        printk(KERN_INFO "snd-aoa-fabric-layout: "
+                                "%s doesn't match!\n", propname);
+                        return -ENODEV;
+                }
+        } else {
+                if (layouts_list_items != 1) {
+                        printk(KERN_INFO "snd-aoa-fabric-layout: "
+                                "more than one soundbus, but no references.\n");
+                        return -ENODEV;
+                }
+        }
+        codec->soundbus_dev = ldev->sdev;
+        codec->gpio = &ldev->gpio;
+
+        cc = cci->connections;
+        if (!cc)
+                return -EINVAL;
+
+        printk(KERN_INFO "snd-aoa-fabric-layout: can use this codec\n");
+
+        codec->connected = 0;
+        codec->fabric_data = cc;
+
+        while (cc->connected) {
+                codec->connected |= 1<<cc->codec_bit;
+                cc++;
+        }
+
+        return 0;
+}
+
+static int layout_found_codec(struct aoa_codec *codec)
+{
+        struct layout_dev *ldev;
+        int i;
+
+        list_for_each_entry(ldev, &layouts_list, list) {
+                for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+                        if (!ldev->layout->codecs[i].name)
+                                continue;
+                        if (strcmp(ldev->layout->codecs[i].name, codec->name) == 0) {
+                                if (check_codec(codec,
+                                                ldev,
+                                                &ldev->layout->codecs[i]) == 0)
+                                        return 0;
+                        }
+                }
+        }
+        return -ENODEV;
+}
+
+static void layout_remove_codec(struct aoa_codec *codec)
+{
+        int i;
+        /* here remove the codec from the layout dev's
+         * codec reference */
+
+        codec->soundbus_dev = NULL;
+        codec->gpio = NULL;
+        for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+        }
+}
+
+static void layout_notify(void *data)
+{
+        struct layout_dev_ptr *dptr = data;
+        struct layout_dev *ldev;
+        int v, update;
+        struct snd_kcontrol *detected, *c;
+        struct snd_card *card = aoa_get_card();
+
+        ldev = dptr->ptr;
+        if (data == &ldev->selfptr_headphone) {
+                v = ldev->gpio.methods->get_detect(&ldev->gpio, AOA_NOTIFY_HEADPHONE);
+                detected = ldev->headphone_detected_ctrl;
+                update = ldev->switch_on_headphone;
+                if (update) {
+                        ldev->gpio.methods->set_speakers(&ldev->gpio, !v);
+                        ldev->gpio.methods->set_headphone(&ldev->gpio, v);
+                        ldev->gpio.methods->set_lineout(&ldev->gpio, 0);
+                }
+        } else if (data == &ldev->selfptr_lineout) {
+                v = ldev->gpio.methods->get_detect(&ldev->gpio, AOA_NOTIFY_LINE_OUT);
+                detected = ldev->lineout_detected_ctrl;
+                update = ldev->switch_on_lineout;
+                if (update) {
+                        ldev->gpio.methods->set_speakers(&ldev->gpio, !v);
+                        ldev->gpio.methods->set_headphone(&ldev->gpio, 0);
+                        ldev->gpio.methods->set_lineout(&ldev->gpio, v);
+                }
+        } else
+                return;
+
+        if (detected)
+                snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &detected->id);
+        if (update) {
+                c = ldev->headphone_ctrl;
+                if (c)
+                        snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &c->id);
+                c = ldev->speaker_ctrl;
+                if (c)
+                        snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &c->id);
+                c = ldev->lineout_ctrl;
+                if (c)
+                        snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &c->id);
+        }
+}
+
+static void layout_attached_codec(struct aoa_codec *codec)
+{
+        struct codec_connection *cc;
+        struct snd_kcontrol *ctl;
+        int headphones, lineout;
+        struct layout_dev *ldev = layout_device;
+
+        /* need to add this codec to our codec array! */
+
+        cc = codec->fabric_data;
+
+        headphones = codec->gpio->methods->get_detect(codec->gpio,
+                                                      AOA_NOTIFY_HEADPHONE);
+        lineout = codec->gpio->methods->get_detect(codec->gpio,
+                                                   AOA_NOTIFY_LINE_OUT);
+
+        while (cc->connected) {
+                if (cc->connected & CC_SPEAKERS) {
+                        if (headphones <= 0 && lineout <= 0)
+                                ldev->gpio.methods->set_speakers(codec->gpio, 1);
+                        ctl = snd_ctl_new1(&speakers_ctl, codec->gpio);
+                        ldev->speaker_ctrl = ctl;
+                        aoa_snd_ctl_add(ctl);
+                }
+                if (cc->connected & CC_HEADPHONE) {
+                        if (headphones == 1)
+                                ldev->gpio.methods->set_headphone(codec->gpio, 1);
+                        ctl = snd_ctl_new1(&headphone_ctl, codec->gpio);
+                        ldev->headphone_ctrl = ctl;
+                        aoa_snd_ctl_add(ctl);
+                        ldev->have_headphone_detect =
+                                !ldev->gpio.methods
+                                        ->set_notify(&ldev->gpio,
+                                                     AOA_NOTIFY_HEADPHONE,
+                                                     layout_notify,
+                                                     &ldev->selfptr_headphone);
+                        if (ldev->have_headphone_detect) {
+                                ctl = snd_ctl_new1(&headphone_detect_choice,
+                                                   ldev);
+                                aoa_snd_ctl_add(ctl);
+                                ctl = snd_ctl_new1(&headphone_detected,
+                                                   ldev);
+                                ldev->headphone_detected_ctrl = ctl;
+                                aoa_snd_ctl_add(ctl);
+                        }
+                }
+                if (cc->connected & CC_LINEOUT) {
+                        if (lineout == 1)
+                                ldev->gpio.methods->set_lineout(codec->gpio, 1);
+                        ctl = snd_ctl_new1(&lineout_ctl, codec->gpio);
+                        if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE)
+                                strlcpy(ctl->id.name,
+                                        "Headphone Switch", sizeof(ctl->id.name));
+                        ldev->lineout_ctrl = ctl;
+                        aoa_snd_ctl_add(ctl);
+                        ldev->have_lineout_detect =
+                                !ldev->gpio.methods
+                                        ->set_notify(&ldev->gpio,
+                                                     AOA_NOTIFY_LINE_OUT,
+                                                     layout_notify,
+                                                     &ldev->selfptr_lineout);
+                        if (ldev->have_lineout_detect) {
+                                ctl = snd_ctl_new1(&lineout_detect_choice,
+                                                   ldev);
+                                if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE)
+                                        strlcpy(ctl->id.name,
+                                                "Headphone Detect Autoswitch",
+                                                sizeof(ctl->id.name));
+                                aoa_snd_ctl_add(ctl);
+                                ctl = snd_ctl_new1(&lineout_detected,
+                                                   ldev);
+                                if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE)
+                                        strlcpy(ctl->id.name,
+                                                "Headphone Detected",
+                                                sizeof(ctl->id.name));
+                                ldev->lineout_detected_ctrl = ctl;
+                                aoa_snd_ctl_add(ctl);
+                        }
+                }
+                cc++;
+        }
+        /* now update initial state */
+        if (ldev->have_headphone_detect)
+                layout_notify(&ldev->selfptr_headphone);
+        if (ldev->have_lineout_detect)
+                layout_notify(&ldev->selfptr_lineout);
+}
+
+static struct aoa_fabric layout_fabric = {
+        .name = "SoundByLayout",
+        .owner = THIS_MODULE,
+        .found_codec = layout_found_codec,
+        .remove_codec = layout_remove_codec,
+        .attached_codec = layout_attached_codec,
+};
+
+static int aoa_fabric_layout_probe(struct soundbus_dev *sdev)
+{
+        struct device_node *sound = NULL;
+        unsigned int *layout_id;
+        struct layout *layout;
+        struct layout_dev *ldev = NULL;
+        int err;
+
+        /* hm, currently we can only have one ... */
+        if (layout_device)
+                return -ENODEV;
+
+        /* by breaking out we keep a reference */
+        while ((sound = of_get_next_child(sdev->ofdev.node, sound))) {
+                if (sound->type && strcasecmp(sound->type, "soundchip") == 0)
+                        break;
+        }
+        if (!sound) return -ENODEV;
+
+        layout_id = (unsigned int *) get_property(sound, "layout-id", NULL);
+        if (!layout_id)
+                goto outnodev;
+        printk(KERN_INFO "snd-aoa-fabric-layout: found bus with layout %d ", *layout_id);
+
+        layout = find_layout_by_id(*layout_id);
+        if (!layout) {
+                printk("(no idea how to handle)\n");
+                goto outnodev;
+        }
+
+        ldev = kzalloc(sizeof(struct layout_dev), GFP_KERNEL);
+        if (!ldev)
+                goto outnodev;
+
+        layout_device = ldev;
+        ldev->sdev = sdev;
+        ldev->sound = sound;
+        ldev->layout = layout;
+        ldev->gpio.node = sound->parent;
+        switch (layout->layout_id) {
+        case 41: /* that unknown machine no one seems to have */
+        case 51: /* PowerBook5,4 */
+        case 58: /* Mac Mini */
+                ldev->gpio.methods = ftr_gpio_methods;
+                break;
+        default:
+                ldev->gpio.methods = pmf_gpio_methods;
+        }
+        ldev->selfptr_headphone.ptr = ldev;
+        ldev->selfptr_lineout.ptr = ldev;
+        sdev->ofdev.dev.driver_data = ldev;
+
+        printk("(using)\n");
+        list_add(&ldev->list, &layouts_list);
+        layouts_list_items++;
+
+        /* assign these before registering ourselves, so
+         * callbacks that are done during registration
+         * already have the values */
+        sdev->pcmid = ldev->layout->pcmid;
+        if (ldev->layout->busname) {
+                sdev->pcmname = ldev->layout->busname;
+        } else {
+                sdev->pcmname = "Master";
+        }
+
+        ldev->gpio.methods->init(&ldev->gpio);
+
+        err = aoa_fabric_register(&layout_fabric);
+        if (err && err != -EALREADY) {
+                printk(KERN_INFO "snd-aoa-fabric-layout: can't use,"
+                                 " another fabric is active!\n");
+                goto outlistdel;
+        }
+
+        use_layout(layout);
+        ldev->switch_on_headphone = 1;
+        ldev->switch_on_lineout = 1;
+        return 0;
+ outlistdel:
+        /* we won't be using these then... */
+        ldev->gpio.methods->exit(&ldev->gpio);
+        /* reset if we didn't use it */
+        sdev->pcmname = NULL;
+        sdev->pcmid = -1;
+        list_del(&ldev->list);
+        layouts_list_items--;
+ outnodev:
+        if (sound) of_node_put(sound);
+        layout_device = NULL;
+        if (ldev) kfree(ldev);
+        return -ENODEV;
+}
+
+static int aoa_fabric_layout_remove(struct soundbus_dev *sdev)
+{
+        struct layout_dev *ldev = sdev->ofdev.dev.driver_data;
+        int i;
+
+        for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+                if (ldev->codecs[i]) {
+                        aoa_fabric_unlink_codec(ldev->codecs[i]);
+                }
+                ldev->codecs[i] = NULL;
+        }
+        list_del(&ldev->list);
+        layouts_list_items--;
+        of_node_put(ldev->sound);
+
+        ldev->gpio.methods->set_notify(&ldev->gpio,
+                                       AOA_NOTIFY_HEADPHONE,
+                                       NULL,
+                                       NULL);
+        ldev->gpio.methods->set_notify(&ldev->gpio,
+                                       AOA_NOTIFY_LINE_OUT,
+                                       NULL,
+                                       NULL);
+
+        ldev->gpio.methods->exit(&ldev->gpio);
+        layout_device = NULL;
+        kfree(ldev);
+        sdev->pcmid = -1;
+        sdev->pcmname = NULL;
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int aoa_fabric_layout_suspend(struct soundbus_dev *sdev, pm_message_t state)
+{
+        struct layout_dev *ldev = sdev->ofdev.dev.driver_data;
+
+        printk("aoa_fabric_layout_suspend()\n");
+
+        if (ldev->gpio.methods && ldev->gpio.methods->all_amps_off)
+                ldev->gpio.methods->all_amps_off(&ldev->gpio);
+
+        return 0;
+}
+
+static int aoa_fabric_layout_resume(struct soundbus_dev *sdev)
+{
+        struct layout_dev *ldev = sdev->ofdev.dev.driver_data;
+
+        printk("aoa_fabric_layout_resume()\n");
+
+        if (ldev->gpio.methods && ldev->gpio.methods->all_amps_off)
+                ldev->gpio.methods->all_amps_restore(&ldev->gpio);
+
+        return 0;
+}
+#endif
+
+static struct soundbus_driver aoa_soundbus_driver = {
+        .name = "snd_aoa_soundbus_drv",
+        .owner = THIS_MODULE,
+        .probe = aoa_fabric_layout_probe,
+        .remove = aoa_fabric_layout_remove,
+#ifdef CONFIG_PM
+        .suspend = aoa_fabric_layout_suspend,
+        .resume = aoa_fabric_layout_resume,
+#endif
+};
+
+static int __init aoa_fabric_layout_init(void)
+{
+        int err;
+
+        err = soundbus_register_driver(&aoa_soundbus_driver);
+        if (err)
+                return err;
+        return 0;
+}
+
+static void __exit aoa_fabric_layout_exit(void)
+{
+        soundbus_unregister_driver(&aoa_soundbus_driver);
+        aoa_fabric_unregister(&layout_fabric);
+}
+
+module_init(aoa_fabric_layout_init);
+module_exit(aoa_fabric_layout_exit);