From: Takashi Iwai Date: Wed, 17 Jun 2009 07:52:54 +0000 (+0200) Subject: ALSA: hda - Add patch module option X-Git-Tag: v2.6.32-rc1~732^2~13^2~90^2~2 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4ea6fbc8eb23c3ae5fd2fb55a340ab85c8649bce;p=karo-tx-linux.git 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 --- diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig index 04438f1d682d..b8a77f9b0827 100644 --- a/sound/pci/hda/Kconfig +++ b/sound/pci/hda/Kconfig @@ -46,6 +46,20 @@ config SND_HDA_INPUT_JACK Say Y here to enable the jack plugging notification via input layer. +config SND_HDA_PATCH_LOADER + bool "Support initialization patch loading for HD-audio" + depends on EXPERIMENTAL + select FW_LOADER + select SND_HDA_HWDEP + select SND_HDA_RECONFIG + help + Say Y here to allow the HD-audio driver to load a pseudo + firmware file ("patch") for overriding the BIOS setup at + start up. The "patch" file can be specified via patch module + option, such as patch=hda-init. + + This option turns on hwdep and reconfig features automatically. + config SND_HDA_CODEC_REALTEK bool "Build Realtek HD-audio codec support" default y diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index b7ca7d5bbe8c..72c997592eed 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -939,6 +939,13 @@ static inline void snd_hda_power_down(struct hda_codec *codec) {} #define snd_hda_codec_needs_resume(codec) 1 #endif +#ifdef CONFIG_SND_HDA_PATCH_LOADER +/* + * patch firmware + */ +int snd_hda_load_patch(struct hda_bus *bus, const char *patch); +#endif + /* * Codec modularization */ diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c index 6812fbe80fa4..cc24e6721d74 100644 --- a/sound/pci/hda/hda_hwdep.c +++ b/sound/pci/hda/hda_hwdep.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include "hda_codec.h" #include "hda_local.h" @@ -312,12 +313,8 @@ static ssize_t init_verbs_show(struct device *dev, 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; @@ -331,6 +328,18 @@ static ssize_t init_verbs_store(struct device *dev, 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; } @@ -376,19 +385,15 @@ static void remove_trail_spaces(char *str) #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); @@ -411,7 +416,7 @@ static ssize_t hints_store(struct device *dev, kfree(hint->key); hint->key = key; hint->val = val; - return count; + return 0; } /* allocate a new hint entry */ if (codec->hints.used >= MAX_HINTS) @@ -424,6 +429,18 @@ static ssize_t hints_store(struct device *dev, } 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; } @@ -469,20 +486,24 @@ static ssize_t driver_pin_configs_show(struct device *dev, #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; @@ -553,3 +574,180 @@ int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key) 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 */ diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index da58f2ca9151..a2f4a116f872 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -61,6 +61,9 @@ static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1}; 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."); @@ -84,6 +87,10 @@ MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs " "(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; @@ -2468,6 +2475,9 @@ static int __devinit azx_probe(struct pci_dev *pci, 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; @@ -2477,6 +2487,15 @@ static int __devinit azx_probe(struct pci_dev *pci, 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) @@ -2493,8 +2512,6 @@ static int __devinit azx_probe(struct pci_dev *pci, if (err < 0) goto out_free; - snd_card_set_dev(card, &pci->dev); - err = snd_card_register(card); if (err < 0) goto out_free;