ALSA: hda - Add patch module option
Added the patch module option to apply a "patch" as a firmware to modify pin configurations or give additional hints to the driver before actually initializing and configuring the codec. This can be used as a workaround when the BIOS doesn't give sufficient information or give wrong information that doesn't match with the real hardware setup, until it's fixed statically in the driver via a quirk. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
a1e21c9078
commit
4ea6fbc8eb
@ -46,6 +46,20 @@ config SND_HDA_INPUT_JACK
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Say Y here to enable the jack plugging notification via
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input layer.
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config SND_HDA_PATCH_LOADER
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bool "Support initialization patch loading for HD-audio"
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depends on EXPERIMENTAL
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select FW_LOADER
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select SND_HDA_HWDEP
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select SND_HDA_RECONFIG
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help
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Say Y here to allow the HD-audio driver to load a pseudo
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firmware file ("patch") for overriding the BIOS setup at
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start up. The "patch" file can be specified via patch module
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option, such as patch=hda-init.
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This option turns on hwdep and reconfig features automatically.
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config SND_HDA_CODEC_REALTEK
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bool "Build Realtek HD-audio codec support"
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default y
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@ -939,6 +939,13 @@ static inline void snd_hda_power_down(struct hda_codec *codec) {}
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#define snd_hda_codec_needs_resume(codec) 1
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#endif
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#ifdef CONFIG_SND_HDA_PATCH_LOADER
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/*
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* patch firmware
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*/
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int snd_hda_load_patch(struct hda_bus *bus, const char *patch);
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#endif
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/*
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* Codec modularization
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*/
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@ -24,6 +24,7 @@
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#include <linux/compat.h>
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#include <linux/mutex.h>
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#include <linux/ctype.h>
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#include <linux/firmware.h>
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#include <sound/core.h>
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#include "hda_codec.h"
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#include "hda_local.h"
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@ -312,12 +313,8 @@ static ssize_t init_verbs_show(struct device *dev,
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return len;
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}
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static ssize_t init_verbs_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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static int parse_init_verbs(struct hda_codec *codec, const char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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struct hda_verb *v;
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int nid, verb, param;
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@ -331,6 +328,18 @@ static ssize_t init_verbs_store(struct device *dev,
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v->nid = nid;
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v->verb = verb;
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v->param = param;
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return 0;
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}
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static ssize_t init_verbs_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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int err = parse_init_verbs(codec, buf);
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if (err < 0)
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return err;
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return count;
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}
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@ -376,19 +385,15 @@ static void remove_trail_spaces(char *str)
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#define MAX_HINTS 1024
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static ssize_t hints_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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static int parse_hints(struct hda_codec *codec, const char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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char *key, *val;
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struct hda_hint *hint;
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while (isspace(*buf))
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buf++;
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if (!*buf || *buf == '#' || *buf == '\n')
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return count;
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return 0;
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if (*buf == '=')
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return -EINVAL;
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key = kstrndup_noeol(buf, 1024);
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@ -411,7 +416,7 @@ static ssize_t hints_store(struct device *dev,
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kfree(hint->key);
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hint->key = key;
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hint->val = val;
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return count;
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return 0;
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}
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/* allocate a new hint entry */
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if (codec->hints.used >= MAX_HINTS)
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@ -424,6 +429,18 @@ static ssize_t hints_store(struct device *dev,
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}
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hint->key = key;
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hint->val = val;
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return 0;
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}
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static ssize_t hints_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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int err = parse_hints(codec, buf);
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if (err < 0)
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return err;
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return count;
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}
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@ -469,20 +486,24 @@ static ssize_t driver_pin_configs_show(struct device *dev,
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#define MAX_PIN_CONFIGS 32
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static int parse_user_pin_configs(struct hda_codec *codec, const char *buf)
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{
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int nid, cfg;
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if (sscanf(buf, "%i %i", &nid, &cfg) != 2)
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return -EINVAL;
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if (!nid)
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return -EINVAL;
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return snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
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}
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static ssize_t user_pin_configs_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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int nid, cfg;
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int err;
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if (sscanf(buf, "%i %i", &nid, &cfg) != 2)
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return -EINVAL;
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if (!nid)
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return -EINVAL;
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err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
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int err = parse_user_pin_configs(codec, buf);
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if (err < 0)
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return err;
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return count;
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@ -553,3 +574,180 @@ int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
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EXPORT_SYMBOL_HDA(snd_hda_get_bool_hint);
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#endif /* CONFIG_SND_HDA_RECONFIG */
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#ifdef CONFIG_SND_HDA_PATCH_LOADER
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/* parser mode */
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enum {
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LINE_MODE_NONE,
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LINE_MODE_CODEC,
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LINE_MODE_MODEL,
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LINE_MODE_PINCFG,
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LINE_MODE_VERB,
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LINE_MODE_HINT,
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NUM_LINE_MODES,
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};
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static inline int strmatch(const char *a, const char *b)
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{
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return strnicmp(a, b, strlen(b)) == 0;
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}
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/* parse the contents after the line "[codec]"
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* accept only the line with three numbers, and assign the current codec
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*/
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static void parse_codec_mode(char *buf, struct hda_bus *bus,
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struct hda_codec **codecp)
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{
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unsigned int vendorid, subid, caddr;
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struct hda_codec *codec;
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*codecp = NULL;
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if (sscanf(buf, "%i %i %i", &vendorid, &subid, &caddr) == 3) {
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list_for_each_entry(codec, &bus->codec_list, list) {
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if (codec->addr == caddr) {
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*codecp = codec;
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break;
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}
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}
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}
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}
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/* parse the contents after the other command tags, [pincfg], [verb],
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* [hint] and [model]
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* just pass to the sysfs helper (only when any codec was specified)
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*/
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static void parse_pincfg_mode(char *buf, struct hda_bus *bus,
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struct hda_codec **codecp)
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{
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if (!*codecp)
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return;
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parse_user_pin_configs(*codecp, buf);
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}
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static void parse_verb_mode(char *buf, struct hda_bus *bus,
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struct hda_codec **codecp)
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{
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if (!*codecp)
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return;
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parse_init_verbs(*codecp, buf);
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}
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static void parse_hint_mode(char *buf, struct hda_bus *bus,
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struct hda_codec **codecp)
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{
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if (!*codecp)
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return;
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parse_hints(*codecp, buf);
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}
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static void parse_model_mode(char *buf, struct hda_bus *bus,
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struct hda_codec **codecp)
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{
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if (!*codecp)
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return;
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kfree((*codecp)->modelname);
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(*codecp)->modelname = kstrdup(buf, GFP_KERNEL);
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}
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struct hda_patch_item {
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const char *tag;
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void (*parser)(char *buf, struct hda_bus *bus, struct hda_codec **retc);
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};
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static struct hda_patch_item patch_items[NUM_LINE_MODES] = {
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[LINE_MODE_CODEC] = { "[codec]", parse_codec_mode },
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[LINE_MODE_MODEL] = { "[model]", parse_model_mode },
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[LINE_MODE_VERB] = { "[verb]", parse_verb_mode },
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[LINE_MODE_PINCFG] = { "[pincfg]", parse_pincfg_mode },
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[LINE_MODE_HINT] = { "[hint]", parse_hint_mode },
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};
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/* check the line starting with '[' -- change the parser mode accodingly */
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static int parse_line_mode(char *buf, struct hda_bus *bus)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(patch_items); i++) {
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if (!patch_items[i].tag)
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continue;
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if (strmatch(buf, patch_items[i].tag))
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return i;
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}
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return LINE_MODE_NONE;
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}
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/* copy one line from the buffer in fw, and update the fields in fw
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* return zero if it reaches to the end of the buffer, or non-zero
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* if successfully copied a line
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*
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* the spaces at the beginning and the end of the line are stripped
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*/
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static int get_line_from_fw(char *buf, int size, struct firmware *fw)
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{
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int len;
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const char *p = fw->data;
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while (isspace(*p) && fw->size) {
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p++;
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fw->size--;
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}
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if (!fw->size)
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return 0;
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if (size < fw->size)
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size = fw->size;
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for (len = 0; len < fw->size; len++) {
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if (!*p)
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break;
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if (*p == '\n') {
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p++;
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len++;
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break;
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}
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if (len < size)
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*buf++ = *p++;
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}
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*buf = 0;
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fw->size -= len;
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fw->data = p;
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remove_trail_spaces(buf);
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return 1;
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}
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/*
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* load a "patch" firmware file and parse it
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*/
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int snd_hda_load_patch(struct hda_bus *bus, const char *patch)
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{
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int err;
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const struct firmware *fw;
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struct firmware tmp;
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char buf[128];
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struct hda_codec *codec;
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int line_mode;
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struct device *dev = bus->card->dev;
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if (snd_BUG_ON(!dev))
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return -ENODEV;
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err = request_firmware(&fw, patch, dev);
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if (err < 0) {
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printk(KERN_ERR "hda-codec: Cannot load the patch '%s'\n",
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patch);
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return err;
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}
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tmp = *fw;
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line_mode = LINE_MODE_NONE;
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codec = NULL;
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while (get_line_from_fw(buf, sizeof(buf) - 1, &tmp)) {
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if (!*buf || *buf == '#' || *buf == '\n')
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continue;
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if (*buf == '[')
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line_mode = parse_line_mode(buf, bus);
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else if (patch_items[line_mode].parser)
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patch_items[line_mode].parser(buf, bus, &codec);
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}
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release_firmware(fw);
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return 0;
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}
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EXPORT_SYMBOL_HDA(snd_hda_load_patch);
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#endif /* CONFIG_SND_HDA_PATCH_LOADER */
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@ -61,6 +61,9 @@ static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
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static int probe_only[SNDRV_CARDS];
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static int single_cmd;
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static int enable_msi;
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#ifdef CONFIG_SND_HDA_PATCH_LOADER
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static char *patch[SNDRV_CARDS];
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#endif
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
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@ -84,6 +87,10 @@ MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
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"(for debugging only).");
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module_param(enable_msi, int, 0444);
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MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
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#ifdef CONFIG_SND_HDA_PATCH_LOADER
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module_param_array(patch, charp, NULL, 0444);
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MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
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#endif
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#ifdef CONFIG_SND_HDA_POWER_SAVE
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static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
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@ -2468,6 +2475,9 @@ static int __devinit azx_probe(struct pci_dev *pci,
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return err;
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}
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/* set this here since it's referred in snd_hda_load_patch() */
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snd_card_set_dev(card, &pci->dev);
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err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
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if (err < 0)
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goto out_free;
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@ -2477,6 +2487,15 @@ static int __devinit azx_probe(struct pci_dev *pci,
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err = azx_codec_create(chip, model[dev]);
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if (err < 0)
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goto out_free;
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#ifdef CONFIG_SND_HDA_PATCH_LOADER
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if (patch[dev]) {
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snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
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patch[dev]);
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err = snd_hda_load_patch(chip->bus, patch[dev]);
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if (err < 0)
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goto out_free;
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}
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#endif
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if (!probe_only[dev]) {
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err = azx_codec_configure(chip);
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if (err < 0)
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@ -2493,8 +2512,6 @@ static int __devinit azx_probe(struct pci_dev *pci,
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if (err < 0)
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goto out_free;
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snd_card_set_dev(card, &pci->dev);
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err = snd_card_register(card);
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if (err < 0)
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goto out_free;
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