8 files changed, 342 insertions, 33 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 4252697a95d6..f9d11140af91 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -768,6 +768,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
                 Passing -1 will make the driver to choose the appropriate
                 value based on the controller chip.
+    patch       - Specifies the early "patch" files to modify the HD-audio
+                setup before initializing the codecs.  This option is
+                available only when CONFIG_SND_HDA_PATCH_LOADER=y is set.
+                See HD-Audio.txt for details.
     
     [Single (global) options]
     single_cmd  - Use single immediate commands to communicate with
diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt
index 71ac995b1915..0b5b480708f8 100644
--- a/Documentation/sound/alsa/HD-Audio.txt
+++ b/Documentation/sound/alsa/HD-Audio.txt
@@ -403,6 +403,66 @@ re-configure based on that state, run like below:
 ------------------------------------------------------------------------
 
 
+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
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.c b/sound/pci/hda/hda_codec.c
index 462e2cedaa6a..506f46ef0304 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -885,7 +885,7 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
  * Returns 0 if successful, or a negative error code.
  */
 int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
-                                    int do_init, struct hda_codec **codecp)
+                                    struct hda_codec **codecp)
 {
         struct hda_codec *codec;
         char component[31];
@@ -978,11 +978,6 @@ int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr
                             codec->afg ? codec->afg : codec->mfg,
                             AC_PWRST_D0);
 
-        if (do_init) {
-                err = snd_hda_codec_configure(codec);
-                if (err < 0)
-                        goto error;
-        }
         snd_hda_codec_proc_new(codec);
 
         snd_hda_create_hwdep(codec);
@@ -1036,6 +1031,7 @@ int snd_hda_codec_configure(struct hda_codec *codec)
                 err = init_unsol_queue(codec->bus);
         return err;
 }
+EXPORT_SYMBOL_HDA(snd_hda_codec_configure);
 
 /**
  * snd_hda_codec_setup_stream - set up the codec for streaming
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index cad79efaabc9..72c997592eed 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -830,7 +830,8 @@ enum {
 int snd_hda_bus_new(struct snd_card *card, const struct hda_bus_template *temp,
                     struct hda_bus **busp);
 int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
-                      int do_init, struct hda_codec **codecp);
+                      struct hda_codec **codecp);
+int snd_hda_codec_configure(struct hda_codec *codec);
 
 /*
  * low level functions
@@ -938,6 +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 <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"
@@ -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 4e9ea7080270..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;
@@ -1286,8 +1293,7 @@ static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] __devinitdata = {
         [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;
@@ -1346,7 +1352,7 @@ static int __devinit azx_codec_create(struct azx *chip, const char *model,
         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++;
@@ -1356,7 +1362,16 @@ static int __devinit azx_codec_create(struct azx *chip, const char *model,
                 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;
 }
 
@@ -2460,15 +2475,32 @@ 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;
         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);
@@ -2480,8 +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;
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 83349013b4df..75aa3785212f 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -99,7 +99,6 @@ struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
 int snd_hda_add_vmaster(struct hda_codec *codec, char *name,
                         unsigned int *tlv, const char **slaves);
 int snd_hda_codec_reset(struct hda_codec *codec);
-int snd_hda_codec_configure(struct hda_codec *codec);
 
 /* amp value bits */
 #define HDA_AMP_MUTE    0x80