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authorMauro Carvalho Chehab <mchehab@infradead.org>2008-08-11 10:18:39 +0200
committerTakashi Iwai <tiwai@suse.de>2008-11-30 11:09:09 +0100
commit2eda344546caaf9168e778a4007f4609e95106e0 (patch)
treebc3c31e19ff78b59383e6c6127cf361a0d44eeb2 /sound
parentALSA: hda - Don't export symbols when built-in kernel (diff)
downloadlinux-2eda344546caaf9168e778a4007f4609e95106e0.tar.xz
linux-2eda344546caaf9168e778a4007f4609e95106e0.zip
ALSA: hda - Add a new function to seek for a codec ID
Gateway notebooks have their ID inside codec vendor ID, not at PCI ID. Due to that, model auto-detection were not possible with the standard seek method. This is what is found at lspci -vnn: 00:14.2 Audio device [0403]: ATI Technologies Inc SB450 HDA Audio [1002:437b] (rev 01) Subsystem: ATI Technologies Inc SB450 HDA Audio [1002:437b] Yet, autodetection is possible, since the codec properly reflects the vendor at the Subsystem ID: $ cat /proc/asound/card0/codec#0 |head -4 Codec: SigmaTel STAC9250 Address: 0 Vendor Id: 0x83847634 Subsystem Id: 0x107b0367 This patch adds a new autodetection function that seeks for codec subsystem ID. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_codec.c61
-rw-r--r--sound/pci/hda/hda_local.h3
2 files changed, 64 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 004344825e9e..9c1af0101dde 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2705,6 +2705,67 @@ int snd_hda_check_board_config(struct hda_codec *codec,
EXPORT_SYMBOL_HDA(snd_hda_check_board_config);
/**
+ * snd_hda_check_board_codec_sid_config - compare the current codec
+ subsystem ID with the
+ config table
+
+ This is important for Gateway notebooks with SB450 HDA Audio
+ where the vendor ID of the PCI device is:
+ ATI Technologies Inc SB450 HDA Audio [1002:437b]
+ and the vendor/subvendor are found only at the codec.
+
+ * @codec: the HDA codec
+ * @num_configs: number of config enums
+ * @models: array of model name strings
+ * @tbl: configuration table, terminated by null entries
+ *
+ * Compares the modelname or PCI subsystem id of the current codec with the
+ * given configuration table. If a matching entry is found, returns its
+ * config value (supposed to be 0 or positive).
+ *
+ * If no entries are matching, the function returns a negative value.
+ */
+int snd_hda_check_board_codec_sid_config(struct hda_codec *codec,
+ int num_configs, const char **models,
+ const struct snd_pci_quirk *tbl)
+{
+ const struct snd_pci_quirk *q;
+
+ /* Search for codec ID */
+ for (q = tbl; q->subvendor; q++) {
+ unsigned long vendorid = (q->subdevice) | (q->subvendor << 16);
+
+ if (vendorid == codec->subsystem_id)
+ break;
+ }
+
+ if (!q->subvendor)
+ return -1;
+
+ tbl = q;
+
+ if (tbl->value >= 0 && tbl->value < num_configs) {
+#ifdef CONFIG_SND_DEBUG_DETECT
+ char tmp[10];
+ const char *model = NULL;
+ if (models)
+ model = models[tbl->value];
+ if (!model) {
+ sprintf(tmp, "#%d", tbl->value);
+ model = tmp;
+ }
+ snd_printdd(KERN_INFO "hda_codec: model '%s' is selected "
+ "for config %x:%x (%s)\n",
+ model, tbl->subvendor, tbl->subdevice,
+ (tbl->name ? tbl->name : "Unknown device"));
+#endif
+ return tbl->value;
+ }
+ return -1;
+}
+EXPORT_SYMBOL_HDA(snd_hda_check_board_codec_sid_config);
+
+/**
* snd_hda_add_new_ctls - create controls from the array
* @codec: the HDA codec
* @knew: the array of struct snd_kcontrol_new
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 6f2fe0f9fdd8..1dd8716c387f 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -296,6 +296,9 @@ void snd_print_pcm_bits(int pcm, char *buf, int buflen);
int snd_hda_check_board_config(struct hda_codec *codec, int num_configs,
const char **modelnames,
const struct snd_pci_quirk *pci_list);
+int snd_hda_check_board_codec_sid_config(struct hda_codec *codec,
+ int num_configs, const char **models,
+ const struct snd_pci_quirk *tbl);
int snd_hda_add_new_ctls(struct hda_codec *codec,
struct snd_kcontrol_new *knew);