------------------------------------------------------------------------
+Early Patching
+~~~~~~~~~~~~~~
+When CONFIG_SND_HDA_PATCH_LOADER=y is set, you can pass a "patch" as a
+firmware file for modifying the HD-audio setup before initializing the
+codec. This can work basically like the reconfiguration via sysfs in
+the above, but it does it before the first codec configuration.
+
+A patch file is a plain text file which looks like below:
+
+------------------------------------------------------------------------
+ [codec]
+ 0x12345678 0xabcd1234 2
+
+ [model]
+ auto
+
+ [pincfg]
+ 0x12 0x411111f0
+
+ [verb]
+ 0x20 0x500 0x03
+ 0x20 0x400 0xff
+
+ [hint]
+ hp_detect = yes
+------------------------------------------------------------------------
+
+The file needs to have a line `[codec]`. The next line should contain
+three numbers indicating the codec vendor-id (0x12345678 in the
+example), the codec subsystem-id (0xabcd1234) and the address (2) of
+the codec. The rest patch entries are applied to this specified codec
+until another codec entry is given.
+
+The `[model]` line allows to change the model name of the each codec.
+In the example above, it will be changed to model=auto.
+Note that this overrides the module option.
+
+After the `[pincfg]` line, the contents are parsed as the initial
+default pin-configurations just like `user_pin_configs` sysfs above.
+The values can be shown in user_pin_configs sysfs file, too.
+
+Similarly, the lines after `[verb]` are parsed as `init_verbs`
+sysfs entries, and the lines after `[hint]` are parsed as `hints`
+sysfs entries, respectively.
+
+The hd-audio driver reads the file via request_firmware(). Thus,
+a patch file has to be located on the appropriate firmware path,
+typically, /lib/firmware. For example, when you pass the option
+`patch=hda-init.fw`, the file /lib/firmware/hda-init-fw must be
+present.
+
+The patch module option is specific to each card instance, and you
+need to give one file name for each instance, separated by commas.
+For example, if you have two cards, one for an on-board analog and one
+for an HDMI video board, you may pass patch option like below:
+------------------------------------------------------------------------
+ options snd-hda-intel patch=on-board-patch,hdmi-patch
+------------------------------------------------------------------------
+
+
Power-Saving
~~~~~~~~~~~~
The power-saving is a kind of auto-suspend of the device. When the
#include <linux/compat.h>
#include <linux/mutex.h>
#include <linux/ctype.h>
+#include <linux/firmware.h>
#include <sound/core.h>
#include "hda_codec.h"
#include "hda_local.h"
return len;
}
-static ssize_t init_verbs_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int parse_init_verbs(struct hda_codec *codec, const char *buf)
{
- struct snd_hwdep *hwdep = dev_get_drvdata(dev);
- struct hda_codec *codec = hwdep->private_data;
struct hda_verb *v;
int nid, verb, param;
v->nid = nid;
v->verb = verb;
v->param = param;
+ return 0;
+}
+
+static ssize_t init_verbs_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ int err = parse_init_verbs(codec, buf);
+ if (err < 0)
+ return err;
return count;
}
#define MAX_HINTS 1024
-static ssize_t hints_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int parse_hints(struct hda_codec *codec, const char *buf)
{
- struct snd_hwdep *hwdep = dev_get_drvdata(dev);
- struct hda_codec *codec = hwdep->private_data;
char *key, *val;
struct hda_hint *hint;
while (isspace(*buf))
buf++;
if (!*buf || *buf == '#' || *buf == '\n')
- return count;
+ return 0;
if (*buf == '=')
return -EINVAL;
key = kstrndup_noeol(buf, 1024);
kfree(hint->key);
hint->key = key;
hint->val = val;
- return count;
+ return 0;
}
/* allocate a new hint entry */
if (codec->hints.used >= MAX_HINTS)
}
hint->key = key;
hint->val = val;
+ return 0;
+}
+
+static ssize_t hints_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ int err = parse_hints(codec, buf);
+ if (err < 0)
+ return err;
return count;
}
#define MAX_PIN_CONFIGS 32
-static ssize_t user_pin_configs_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int parse_user_pin_configs(struct hda_codec *codec, const char *buf)
{
- struct snd_hwdep *hwdep = dev_get_drvdata(dev);
- struct hda_codec *codec = hwdep->private_data;
int nid, cfg;
- int err;
if (sscanf(buf, "%i %i", &nid, &cfg) != 2)
return -EINVAL;
if (!nid)
return -EINVAL;
- err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
+ return snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
+}
+
+static ssize_t user_pin_configs_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct snd_hwdep *hwdep = dev_get_drvdata(dev);
+ struct hda_codec *codec = hwdep->private_data;
+ int err = parse_user_pin_configs(codec, buf);
if (err < 0)
return err;
return count;
EXPORT_SYMBOL_HDA(snd_hda_get_bool_hint);
#endif /* CONFIG_SND_HDA_RECONFIG */
+
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+
+/* parser mode */
+enum {
+ LINE_MODE_NONE,
+ LINE_MODE_CODEC,
+ LINE_MODE_MODEL,
+ LINE_MODE_PINCFG,
+ LINE_MODE_VERB,
+ LINE_MODE_HINT,
+ NUM_LINE_MODES,
+};
+
+static inline int strmatch(const char *a, const char *b)
+{
+ return strnicmp(a, b, strlen(b)) == 0;
+}
+
+/* parse the contents after the line "[codec]"
+ * accept only the line with three numbers, and assign the current codec
+ */
+static void parse_codec_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ unsigned int vendorid, subid, caddr;
+ struct hda_codec *codec;
+
+ *codecp = NULL;
+ if (sscanf(buf, "%i %i %i", &vendorid, &subid, &caddr) == 3) {
+ list_for_each_entry(codec, &bus->codec_list, list) {
+ if (codec->addr == caddr) {
+ *codecp = codec;
+ break;
+ }
+ }
+ }
+}
+
+/* parse the contents after the other command tags, [pincfg], [verb],
+ * [hint] and [model]
+ * just pass to the sysfs helper (only when any codec was specified)
+ */
+static void parse_pincfg_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ if (!*codecp)
+ return;
+ parse_user_pin_configs(*codecp, buf);
+}
+
+static void parse_verb_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ if (!*codecp)
+ return;
+ parse_init_verbs(*codecp, buf);
+}
+
+static void parse_hint_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ if (!*codecp)
+ return;
+ parse_hints(*codecp, buf);
+}
+
+static void parse_model_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ if (!*codecp)
+ return;
+ kfree((*codecp)->modelname);
+ (*codecp)->modelname = kstrdup(buf, GFP_KERNEL);
+}
+
+struct hda_patch_item {
+ const char *tag;
+ void (*parser)(char *buf, struct hda_bus *bus, struct hda_codec **retc);
+};
+
+static struct hda_patch_item patch_items[NUM_LINE_MODES] = {
+ [LINE_MODE_CODEC] = { "[codec]", parse_codec_mode },
+ [LINE_MODE_MODEL] = { "[model]", parse_model_mode },
+ [LINE_MODE_VERB] = { "[verb]", parse_verb_mode },
+ [LINE_MODE_PINCFG] = { "[pincfg]", parse_pincfg_mode },
+ [LINE_MODE_HINT] = { "[hint]", parse_hint_mode },
+};
+
+/* check the line starting with '[' -- change the parser mode accodingly */
+static int parse_line_mode(char *buf, struct hda_bus *bus)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(patch_items); i++) {
+ if (!patch_items[i].tag)
+ continue;
+ if (strmatch(buf, patch_items[i].tag))
+ return i;
+ }
+ return LINE_MODE_NONE;
+}
+
+/* copy one line from the buffer in fw, and update the fields in fw
+ * return zero if it reaches to the end of the buffer, or non-zero
+ * if successfully copied a line
+ *
+ * the spaces at the beginning and the end of the line are stripped
+ */
+static int get_line_from_fw(char *buf, int size, struct firmware *fw)
+{
+ int len;
+ const char *p = fw->data;
+ while (isspace(*p) && fw->size) {
+ p++;
+ fw->size--;
+ }
+ if (!fw->size)
+ return 0;
+ if (size < fw->size)
+ size = fw->size;
+
+ for (len = 0; len < fw->size; len++) {
+ if (!*p)
+ break;
+ if (*p == '\n') {
+ p++;
+ len++;
+ break;
+ }
+ if (len < size)
+ *buf++ = *p++;
+ }
+ *buf = 0;
+ fw->size -= len;
+ fw->data = p;
+ remove_trail_spaces(buf);
+ return 1;
+}
+
+/*
+ * load a "patch" firmware file and parse it
+ */
+int snd_hda_load_patch(struct hda_bus *bus, const char *patch)
+{
+ int err;
+ const struct firmware *fw;
+ struct firmware tmp;
+ char buf[128];
+ struct hda_codec *codec;
+ int line_mode;
+ struct device *dev = bus->card->dev;
+
+ if (snd_BUG_ON(!dev))
+ return -ENODEV;
+ err = request_firmware(&fw, patch, dev);
+ if (err < 0) {
+ printk(KERN_ERR "hda-codec: Cannot load the patch '%s'\n",
+ patch);
+ return err;
+ }
+
+ tmp = *fw;
+ line_mode = LINE_MODE_NONE;
+ codec = NULL;
+ while (get_line_from_fw(buf, sizeof(buf) - 1, &tmp)) {
+ if (!*buf || *buf == '#' || *buf == '\n')
+ continue;
+ if (*buf == '[')
+ line_mode = parse_line_mode(buf, bus);
+ else if (patch_items[line_mode].parser)
+ patch_items[line_mode].parser(buf, bus, &codec);
+ }
+ release_firmware(fw);
+ return 0;
+}
+EXPORT_SYMBOL_HDA(snd_hda_load_patch);
+#endif /* CONFIG_SND_HDA_PATCH_LOADER */
static int probe_only[SNDRV_CARDS];
static int single_cmd;
static int enable_msi;
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+static char *patch[SNDRV_CARDS];
+#endif
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
"(for debugging only).");
module_param(enable_msi, int, 0444);
MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+module_param_array(patch, charp, NULL, 0444);
+MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
+#endif
#ifdef CONFIG_SND_HDA_POWER_SAVE
static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
[AZX_DRIVER_TERA] = 1,
};
-static int __devinit azx_codec_create(struct azx *chip, const char *model,
- int no_init)
+static int __devinit azx_codec_create(struct azx *chip, const char *model)
{
struct hda_bus_template bus_temp;
int c, codecs, err;
for (c = 0; c < max_slots; c++) {
if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
struct hda_codec *codec;
- err = snd_hda_codec_new(chip->bus, c, !no_init, &codec);
+ err = snd_hda_codec_new(chip->bus, c, &codec);
if (err < 0)
continue;
codecs++;
snd_printk(KERN_ERR SFX "no codecs initialized\n");
return -ENXIO;
}
+ return 0;
+}
+/* configure each codec instance */
+static int __devinit azx_codec_configure(struct azx *chip)
+{
+ struct hda_codec *codec;
+ list_for_each_entry(codec, &chip->bus->codec_list, list) {
+ snd_hda_codec_configure(codec);
+ }
return 0;
}
return err;
}
+ /* set this here since it's referred in snd_hda_load_patch() */
+ snd_card_set_dev(card, &pci->dev);
+
err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
if (err < 0)
goto out_free;
card->private_data = chip;
/* create codec instances */
- err = azx_codec_create(chip, model[dev], probe_only[dev]);
+ err = azx_codec_create(chip, model[dev]);
if (err < 0)
goto out_free;
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+ if (patch[dev]) {
+ snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
+ patch[dev]);
+ err = snd_hda_load_patch(chip->bus, patch[dev]);
+ if (err < 0)
+ goto out_free;
+ }
+#endif
+ if (!probe_only[dev]) {
+ err = azx_codec_configure(chip);
+ if (err < 0)
+ goto out_free;
+ }
/* create PCM streams */
err = snd_hda_build_pcms(chip->bus);
if (err < 0)
goto out_free;
- snd_card_set_dev(card, &pci->dev);
-
err = snd_card_register(card);
if (err < 0)
goto out_free;
git.openpandora.org / pandora-kernel.git / commitdiff