Merge branch 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa

* 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: (264 commits)
  [ALSA] version 1.0.15
  [ALSA] Fix thinko in cs4231 mce down check
  [ALSA] sun-cs4231: improved waiting after MCE down
  [ALSA] sun-cs4231: use cs4231-regs.h
  [ALSA] This simplifies and fixes waiting loops of the mce_down()
  [ALSA] This patch adds support for a wavetable chip on
  [ALSA] This patch removes open_mutex from the ad1848-lib as
  [ALSA] fix bootup crash in snd_gus_interrupt()
  [ALSA] hda-codec - Fix SKU ID function for realtek codecs
  [ALSA] Support  ASUS P701 eeepc [0x1043 0x82a1] support
  [ALSA] hda-codec - Add array terminator for dmic in STAC codec
  [ALSA] hdsp - Fix zero division
  [ALSA] usb-audio - Fix double comment
  [ALSA] hda-codec - Fix STAC922x volume knob control
  [ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz
  [ALSA] hda-codec - Fix for Fujitsu Lifebook C1410
  [ALSA] mpu-401: remove MPU401_INFO_UART_ONLY flag
  [ALSA] mpu-401: do not require an ACK byte for the ENTER_UART command
  [ALSA] via82xx - Add DXS quirk for Shuttle AK31v2
  [ALSA] hda-codec - Fix input_mux numbers for vaio stac92xx
  ...

6 files changed, 330 insertions, 83 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 241e26c4ff92..4b48c2e82c3c 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -365,13 +365,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
   Module snd-cmipci
   -----------------
 
-    Module for C-Media CMI8338 and 8738 PCI sound cards.
+    Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
 
-    mpu_port	- 0x300,0x310,0x320,0x330 = legacy port,
-		  1 = integrated PCI port,
+    mpu_port    - port address of MIDI interface (8338 only):
+		  0x300,0x310,0x320,0x330 = legacy port,
 		  0 = disable (default)
-    fm_port     - 0x388 = legacy port,
-		  1 = integrated PCI port (default),
+    fm_port     - port address of OPL-3 FM synthesizer (8x38 only):
+		  0x388 = legacy port,
+		  1 = integrated PCI port (default on 8738),
 		  0 = disable
     soft_ac3    - Software-conversion of raw SPDIF packets (model 033 only)
                   (default = 1)
@@ -768,6 +769,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     single_cmd  - Use single immediate commands to communicate with
 		codecs (for debugging only)
     enable_msi	- Enable Message Signaled Interrupt (MSI) (default = off)
+    power_save	- Automatic power-saving timtout (in second, 0 =
+		disable)
+    power_save_controller - Reset HD-audio controller in power-saving mode
+		(default = on)
 
     This module supports one card and autoprobe.
 
@@ -828,6 +833,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
 	ALC268
 	  3stack	3-stack model
+	  toshiba	Toshiba A205
+	  acer		Acer laptops
 	  auto		auto-config reading BIOS (default)
 
 	ALC662
@@ -842,7 +849,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  3stack-dig	3-jack with SPDIF I/O
 	  6stack-dig	6-jack digital with SPDIF I/O
 	  arima		Arima W820Di1
+	  targa		Targa T8, MSI-1049 T8
+	  asus-a7j	ASUS A7J
+	  asus-a7m	ASUS A7M
 	  macpro	MacPro support
+	  mbp3		Macbook Pro rev3
 	  imac24	iMac 24'' with jack detection
 	  w2jc		ASUS W2JC
 	  auto		auto-config reading BIOS (default)
@@ -854,6 +865,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
 	  6stack-dig-demo  6-jack digital for Intel demo board
 	  acer		Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
+	  acer-aspire	Acer Aspire 9810
 	  medion	Medion Laptops
 	  medion-md2	Medion MD2
 	  targa-dig	Targa/MSI
@@ -862,6 +874,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  lenovo-101e	Lenovo 101E
 	  lenovo-nb0763	Lenovo NB0763
 	  lenovo-ms7195-dig Lenovo MS7195
+	  haier-w66	Haier W66
 	  6stack-hp	HP machines with 6stack (Nettle boards)
 	  3stack-hp	HP machines with 3stack (Lucknow, Samba boards)
 	  auto		auto-config reading BIOS (default)
@@ -885,6 +898,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
 	  lenovo	Lenovo 3000 C200
 	  dallas	Dallas laptops
+	  hp		HP TX1000
 	  auto		auto-config reading BIOS (default)
 
 	CMI9880
@@ -920,6 +934,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  3stack	3-stack, shared surrounds
 	  laptop	2-channel only (FSC V2060, Samsung M50)
 	  laptop-eapd	2-channel with EAPD (Samsung R65, ASUS A6J)
+	  laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
 	  ultra		2-channel with EAPD (Samsung Ultra tablet PC)
 
 	AD1988
@@ -945,14 +960,30 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 			can be adjusted.  Appearing only when compiled with
 			$CONFIG_SND_DEBUG=y
 
-	STAC9200/9205/9254
+	STAC9200
 	  ref		Reference board
+	  dell-d21	Dell (unknown)
+	  dell-d22	Dell (unknown)
+	  dell-d23	Dell (unknown)
+	  dell-m21	Dell Inspiron 630m, Dell Inspiron 640m
+	  dell-m22	Dell Latitude D620, Dell Latitude D820
+	  dell-m23	Dell XPS M1710, Dell Precision M90
+	  dell-m24	Dell Latitude 120L
+	  dell-m25	Dell Inspiron E1505n
+	  dell-m26	Dell Inspiron 1501
+	  dell-m27	Dell Inspiron E1705/9400
+	  gateway	Gateway laptops with EAPD control
+
+	STAC9205/9254
+	  ref		Reference board
+	  dell-m42	Dell (unknown)
+	  dell-m43	Dell Precision
+	  dell-m44	Dell Inspiron
 
 	STAC9220/9221
 	  ref		Reference board
 	  3stack	D945 3stack
 	  5stack	D945 5stack + SPDIF
-	  dell		Dell XPS M1210
 	  intel-mac-v1	Intel Mac Type 1
 	  intel-mac-v2	Intel Mac Type 2
 	  intel-mac-v3	Intel Mac Type 3
@@ -964,6 +995,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  macbook-pro	Intel Mac Book Pro 2nd generation (eq. type 3)
 	  imac-intel	Intel iMac (eq. type 2)
 	  imac-intel-20	Intel iMac (newer version) (eq. type 3)
+	  dell-d81	Dell (unknown)
+	  dell-d82	Dell (unknown)
+	  dell-m81	Dell (unknown)
+	  dell-m82	Dell XPS M1210
 
 	STAC9202/9250/9251
 	  ref		Reference board, base config
@@ -975,6 +1010,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  ref		Reference board
 	  3stack	D965 3stack
 	  5stack	D965 5stack + SPDIF
+	  dell-3stack	Dell Dimension E520
 
 	STAC9872
 	  vaio		Setup for VAIO FE550G/SZ110
@@ -989,6 +1025,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
     ML (see the section "Links and Addresses").
 
+    power_save and power_save_controller options are for power-saving
+    mode.  See powersave.txt for details.
+
     Note 2: If you get click noises on output, try the module option
 	    position_fix=1 or 2.  position_fix=1 will use the SD_LPIB
 	    register value without FIFO size correction as the current
@@ -1349,7 +1388,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     port	- port number or -1 (disable)
     irq		- IRQ number or -1 (disable)
     pnp		- PnP detection - 0 = disable, 1 = enable (default)
-    uart_enter	- Issue UART_ENTER command at open - bool, default = on
 
     This module supports multiple devices and PnP.
     
@@ -1630,6 +1668,21 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     
     The power-management is supported.
 
+  Module snd-sc6000
+  -----------------
+
+    Module for Gallant SC-6000 soundcard.
+
+    port	- Port # (0x220 or 0x240)
+    mss_port	- MSS Port # (0x530 or 0xe80)
+    irq		- IRQ # (5,7,9,10,11)
+    mpu_irq	- MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
+    dma		- DMA # (1,3,0)
+
+    This module supports multiple cards.
+
+    This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
+
   Module snd-sgalaxy
   ------------------
 
@@ -1650,9 +1703,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     Module for ENSONIQ SoundScape PnP cards.
 
     port	- Port # (PnP setup)
+    wss_port	- WSS Port # (PnP setup)
     irq		- IRQ # (PnP setup)
     mpu_irq	- MPU-401 IRQ # (PnP setup)
     dma		- DMA # (PnP setup)
+    dma2	- 2nd DMA # (PnP setup, -1 to disable)
 
     This module supports multiple cards.  ISA PnP must be enabled.
     You need sscape_ctl tool in alsa-tools package for loading
@@ -1697,8 +1752,52 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     dma2            - DMA2 # for CS4232 PCM interface.
     isapnp          - ISA PnP detection - 0 = disable, 1 = enable (default)
 
+    The below are options for wavefront_synth features:
+    wf_raw	    - Assume that we need to boot the OS (default:no)
+	If yes, then during driver loading, the state of the board is
+	ignored, and we reset the board and load the firmware anyway.
+    fx_raw	    - Assume that the FX process needs help (default:yes)
+	If false, we'll leave the FX processor in whatever state it is
+	when the driver is loaded.  The default is to download the
+	microprogram and associated coefficients to set it up for
+	"default" operation, whatever that means.
+    debug_default   - Debug parameters for card initialization
+    wait_usecs	    - How long to wait without sleeping, usecs
+		      (default:150)
+	This magic number seems to give pretty optimal throughput
+	based on my limited experimentation. 
+	If you want to play around with it and find a better value, be
+	my guest. Remember, the idea is to get a number that causes us
+	to just busy wait for as many WaveFront commands as possible,
+	without coming up with a number so large that we hog the whole
+	CPU. 
+	Specifically, with this number, out of about 134,000 status
+	waits, only about 250 result in a sleep. 
+    sleep_interval  - How long to sleep when waiting for reply
+		      (default: 100)
+    sleep_tries	    - How many times to try sleeping during a wait
+		      (default: 50)
+    ospath	    - Pathname to processed ICS2115 OS firmware
+		      (default:wavefront.os)
+	The path name of the ISC2115 OS firmware.  In the recent
+	version, it's handled via firmware loader framework, so it
+	must be installed in the proper path, typically,
+	/lib/firmware.
+    reset_time	    - How long to wait for a reset to take effect
+		      (default:2)
+    ramcheck_time   - How many seconds to wait for the RAM test
+		      (default:20)
+    osrun_time	    - How many seconds to wait for the ICS2115 OS
+		      (default:10)
+
     This module supports multiple cards and ISA PnP.
 
+    Note: the firmware file "wavefront.os" was located in the earlier
+          version in /etc.  Now it's loaded via firmware loader, and
+	  must be in the proper firmware path, such as /lib/firmware.
+	  Copy (or symlink) the file appropriately if you get an error
+	  regarding firmware downloading after upgrading the kernel.
+
   Module snd-sonicvibes
   ---------------------
 
diff --git a/Documentation/sound/alsa/CMIPCI.txt b/Documentation/sound/alsa/CMIPCI.txt
index 4b2b15387056..16935c8561f7 100644
--- a/Documentation/sound/alsa/CMIPCI.txt
+++ b/Documentation/sound/alsa/CMIPCI.txt
@@ -1,5 +1,5 @@
-              Brief Notes on C-Media 8738/8338 Driver
-              =======================================
+         Brief Notes on C-Media 8338/8738/8768/8770 Driver
+         =================================================
 
                    Takashi Iwai <tiwai@suse.de>
 
@@ -209,10 +209,13 @@ In addition to the standard SB mixer, CM8x38 provides more functions.
 MIDI CONTROLLER
 ---------------
 
-The MPU401-UART interface is disabled as default.  You need to set
-module option "mpu_port" with a valid I/O port address to enable the
-MIDI support.  The valid I/O ports are 0x300, 0x310, 0x320 and 0x330.
-Choose the value which doesn't conflict with other cards.
+With CMI8338 chips, the MPU401-UART interface is disabled as default.
+You need to set the module option "mpu_port" to a valid I/O port address
+to enable MIDI support.  Valid I/O ports are 0x300, 0x310, 0x320 and
+0x330.  Choose a value that doesn't conflict with other cards.
+
+With CMI8738 and newer chips, the MIDI interface is enabled by default
+and the driver automatically chooses a port address.
 
 There is _no_ hardware wavetable function on this chip (except for
 OPL3 synth below).
@@ -230,6 +233,8 @@ Set "fm_port" module option for more cards.
 The output quality of FM OPL/3 is, however, very weird.
 I don't know why..
 
+CMI8768 and newer chips do not have the FM synth.
+
 
 Joystick and Modem
 ------------------
diff --git a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
index 74d3a35b59bc..2c3fc3cb3b6b 100644
--- a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
+++ b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
@@ -18,8 +18,8 @@
       </affiliation>
      </author>
 
-     <date>November 17, 2005</date>
-     <edition>0.3.6</edition>
+     <date>September 10, 2007</date>
+     <edition>0.3.7</edition>
 
     <abstract>
       <para>
@@ -405,8 +405,9 @@
   /* definition of the chip-specific record */
   struct mychip {
           struct snd_card *card;
-          // rest of implementation will be in the section
-          // "PCI Resource Managements"
+          /* rest of implementation will be in the section
+           * "PCI Resource Managements"
+           */
   };
 
   /* chip-specific destructor
@@ -414,7 +415,7 @@
    */
   static int snd_mychip_free(struct mychip *chip)
   {
-          .... // will be implemented later...
+          .... /* will be implemented later... */
   }
 
   /* component-destructor
@@ -440,8 +441,9 @@
 
           *rchip = NULL;
 
-          // check PCI availability here
-          // (see "PCI Resource Managements")
+          /* check PCI availability here
+           * (see "PCI Resource Managements")
+           */
           ....
 
           /* allocate a chip-specific data with zero filled */
@@ -451,12 +453,13 @@
 
           chip->card = card;
 
-          // rest of initialization here; will be implemented
-          // later, see "PCI Resource Managements"
+          /* rest of initialization here; will be implemented
+           * later, see "PCI Resource Managements"
+           */
           ....
 
-          if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
-                                    chip, &ops)) < 0) {
+          err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+          if (err < 0) {
                   snd_mychip_free(chip);
                   return err;
           }
@@ -490,7 +493,8 @@
                   return -ENOMEM;
 
           /* (3) */
-          if ((err = snd_mychip_create(card, pci, &chip)) < 0) {
+          err = snd_mychip_create(card, pci, &chip);
+          if (err < 0) {
                   snd_card_free(card);
                   return err;
           }
@@ -502,10 +506,11 @@
                   card->shortname, chip->ioport, chip->irq);
 
           /* (5) */
-          .... // implemented later
+          .... /* implemented later */
 
           /* (6) */
-          if ((err = snd_card_register(card)) < 0) {
+          err = snd_card_register(card);
+          if (err < 0) {
                   snd_card_free(card);
                   return err;
           }
@@ -605,7 +610,8 @@
 <![CDATA[
   struct mychip *chip;
   ....
-  if ((err = snd_mychip_create(card, pci, &chip)) < 0) {
+  err = snd_mychip_create(card, pci, &chip);
+  if (err < 0) {
           snd_card_free(card);
           return err;
   }
@@ -666,7 +672,8 @@
           <informalexample>
             <programlisting>
 <![CDATA[
-  if ((err = snd_card_register(card)) < 0) {
+  err = snd_card_register(card);
+  if (err < 0) {
           snd_card_free(card);
           return err;
   }
@@ -1091,7 +1098,7 @@
   static int snd_mychip_free(struct mychip *chip)
   {
           /* disable hardware here if any */
-          .... // (not implemented in this document)
+          .... /* (not implemented in this document) */
 
           /* release the irq */
           if (chip->irq >= 0)
@@ -1119,7 +1126,8 @@
           *rchip = NULL;
 
           /* initialize the PCI entry */
-          if ((err = pci_enable_device(pci)) < 0)
+          err = pci_enable_device(pci);
+          if (err < 0)
                   return err;
           /* check PCI availability (28bit DMA) */
           if (pci_set_dma_mask(pci, DMA_28BIT_MASK) < 0 ||
@@ -1141,7 +1149,8 @@
           chip->irq = -1;
 
           /* (1) PCI resource allocation */
-          if ((err = pci_request_regions(pci, "My Chip")) < 0) {
+          err = pci_request_regions(pci, "My Chip");
+          if (err < 0) {
                   kfree(chip);
                   pci_disable_device(pci);
                   return err;
@@ -1156,10 +1165,10 @@
           chip->irq = pci->irq;
 
           /* (2) initialization of the chip hardware */
-          .... //   (not implemented in this document)
+          .... /*   (not implemented in this document) */
 
-          if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
-                                    chip, &ops)) < 0) {
+          err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+          if (err < 0) {
                   snd_mychip_free(chip);
                   return err;
           }
@@ -1233,7 +1242,8 @@
         <informalexample>
           <programlisting>
 <![CDATA[
-  if ((err = pci_enable_device(pci)) < 0)
+  err = pci_enable_device(pci);
+  if (err < 0)
           return err;
   if (pci_set_dma_mask(pci, DMA_28BIT_MASK) < 0 ||
       pci_set_consistent_dma_mask(pci, DMA_28BIT_MASK) < 0) {
@@ -1294,7 +1304,8 @@
         <informalexample>
           <programlisting>
 <![CDATA[
-  if ((err = pci_request_regions(pci, "My Chip")) < 0) { 
+  err = pci_request_regions(pci, "My Chip");
+  if (err < 0) { 
           kfree(chip);
           pci_disable_device(pci);
           return err;
@@ -1322,7 +1333,7 @@
           <programlisting>
 <![CDATA[
   if (request_irq(pci->irq, snd_mychip_interrupt,
-                  IRQF_DISABLED|IRQF_SHARED, "My Chip", chip)) {
+                  IRQF_SHARED, "My Chip", chip)) {
           printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
           snd_mychip_free(chip);
           return -EBUSY;
@@ -1773,7 +1784,8 @@
           struct snd_pcm_runtime *runtime = substream->runtime;
 
           runtime->hw = snd_mychip_playback_hw;
-          // more hardware-initialization will be done here
+          /* more hardware-initialization will be done here */
+          ....
           return 0;
   }
 
@@ -1781,7 +1793,8 @@
   static int snd_mychip_playback_close(struct snd_pcm_substream *substream)
   {
           struct mychip *chip = snd_pcm_substream_chip(substream);
-          // the hardware-specific codes will be here
+          /* the hardware-specific codes will be here */
+          ....
           return 0;
 
   }
@@ -1793,7 +1806,8 @@
           struct snd_pcm_runtime *runtime = substream->runtime;
 
           runtime->hw = snd_mychip_capture_hw;
-          // more hardware-initialization will be done here
+          /* more hardware-initialization will be done here */
+          ....
           return 0;
   }
 
@@ -1801,7 +1815,8 @@
   static int snd_mychip_capture_close(struct snd_pcm_substream *substream)
   {
           struct mychip *chip = snd_pcm_substream_chip(substream);
-          // the hardware-specific codes will be here
+          /* the hardware-specific codes will be here */
+          ....
           return 0;
 
   }
@@ -1844,10 +1859,12 @@
   {
           switch (cmd) {
           case SNDRV_PCM_TRIGGER_START:
-                  // do something to start the PCM engine
+                  /* do something to start the PCM engine */
+                  ....
                   break;
           case SNDRV_PCM_TRIGGER_STOP:
-                  // do something to stop the PCM engine
+                  /* do something to stop the PCM engine */
+                  ....
                   break;
           default:
                   return -EINVAL;
@@ -1900,8 +1917,8 @@
           struct snd_pcm *pcm;
           int err;
 
-          if ((err = snd_pcm_new(chip->card, "My Chip", 0, 1, 1,
-                                 &pcm)) < 0) 
+          err = snd_pcm_new(chip->card, "My Chip", 0, 1, 1, &pcm);
+          if (err < 0) 
                   return err;
           pcm->private_data = chip;
           strcpy(pcm->name, "My Chip");
@@ -1939,8 +1956,8 @@
           struct snd_pcm *pcm;
           int err;
 
-          if ((err = snd_pcm_new(chip->card, "My Chip", 0, 1, 1,
-                                 &pcm)) < 0) 
+          err = snd_pcm_new(chip->card, "My Chip", 0, 1, 1, &pcm);
+          if (err < 0) 
                   return err;
           pcm->private_data = chip;
           strcpy(pcm->name, "My Chip");
@@ -2097,7 +2114,7 @@
           struct mychip *chip = snd_pcm_chip(pcm);
           /* free your own data */
           kfree(chip->my_private_pcm_data);
-          // do what you like else
+          /* do what you like else */
           ....
   }
 
@@ -2884,10 +2901,10 @@ struct _snd_pcm_runtime {
 <![CDATA[
   switch (cmd) {
   case SNDRV_PCM_TRIGGER_START:
-          // do something to start the PCM engine
+          /* do something to start the PCM engine */
           break;
   case SNDRV_PCM_TRIGGER_STOP:
-          // do something to stop the PCM engine
+          /* do something to stop the PCM engine */
           break;
   default:
           return -EINVAL;
@@ -3071,7 +3088,7 @@ struct _snd_pcm_runtime {
                   spin_unlock(&chip->lock);
                   snd_pcm_period_elapsed(chip->substream);
                   spin_lock(&chip->lock);
-                  // acknowledge the interrupt if necessary
+                  /* acknowledge the interrupt if necessary */
           }
           ....
           spin_unlock(&chip->lock);
@@ -3134,7 +3151,7 @@ struct _snd_pcm_runtime {
                           snd_pcm_period_elapsed(substream);
                           spin_lock(&chip->lock);
                   }
-                  // acknowledge the interrupt if necessary
+                  /* acknowledge the interrupt if necessary */
           }
           ....
           spin_unlock(&chip->lock);
@@ -3456,6 +3473,13 @@ struct _snd_pcm_runtime {
       </para>
 
       <para>
+      The <structfield>tlv</structfield> field can be used to provide
+      metadata about the control; see the
+      <link linkend="control-interface-tlv">
+      <citetitle>Metadata</citetitle></link> subsection.
+      </para>
+
+      <para>
         The other three are
 	<link linkend="control-interface-callbacks"><citetitle>
 	callback functions</citetitle></link>.
@@ -3604,7 +3628,7 @@ struct _snd_pcm_runtime {
 	    <title>Example of info callback</title>
             <programlisting>
 <![CDATA[
-  static int snd_myctl_info(struct snd_kcontrol *kcontrol,
+  static int snd_myctl_mono_info(struct snd_kcontrol *kcontrol,
                           struct snd_ctl_elem_info *uinfo)
   {
           uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
@@ -3639,7 +3663,7 @@ struct _snd_pcm_runtime {
           <informalexample>
             <programlisting>
 <![CDATA[
-  static int snd_myctl_info(struct snd_kcontrol *kcontrol,
+  static int snd_myctl_enum_info(struct snd_kcontrol *kcontrol,
                           struct snd_ctl_elem_info *uinfo)
   {
           static char *texts[4] = {
@@ -3658,6 +3682,16 @@ struct _snd_pcm_runtime {
             </programlisting>
           </informalexample>
         </para>
+
+        <para>
+	  Some common info callbacks are prepared for easy use:
+	<function>snd_ctl_boolean_mono_info()</function> and
+	<function>snd_ctl_boolean_stereo_info()</function>.
+	Obviously, the former is an info callback for a mono channel
+	boolean item, just like <function>snd_myctl_mono_info</function>
+	above, and the latter is for a stereo channel boolean item.
+	</para>
+
       </section>
 
       <section id="control-interface-callbacks-get">
@@ -3794,7 +3828,8 @@ struct _snd_pcm_runtime {
         <informalexample>
           <programlisting>
 <![CDATA[
-  if ((err = snd_ctl_add(card, snd_ctl_new1(&my_control, chip))) < 0)
+  err = snd_ctl_add(card, snd_ctl_new1(&my_control, chip));
+  if (err < 0)
           return err;
 ]]>
           </programlisting>
@@ -3843,6 +3878,56 @@ struct _snd_pcm_runtime {
       </para>
     </section>
 
+    <section id="control-interface-tlv">
+      <title>Metadata</title>
+      <para>
+      To provide information about the dB values of a mixer control, use
+      on of the <constant>DECLARE_TLV_xxx</constant> macros from
+      <filename>&lt;sound/tlv.h&gt;</filename> to define a variable
+      containing this information, set the<structfield>tlv.p
+      </structfield> field to point to this variable, and include the
+      <constant>SNDRV_CTL_ELEM_ACCESS_TLV_READ</constant> flag in the
+      <structfield>access</structfield> field; like this:
+      <informalexample>
+        <programlisting>
+<![CDATA[
+  static DECLARE_TLV_DB_SCALE(db_scale_my_control, -4050, 150, 0);
+
+  static struct snd_kcontrol_new my_control __devinitdata = {
+          ...
+          .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
+                    SNDRV_CTL_ELEM_ACCESS_TLV_READ,
+          ...
+          .tlv.p = db_scale_my_control,
+  };
+]]>
+        </programlisting>
+      </informalexample>
+      </para>
+
+      <para>
+      The <function>DECLARE_TLV_DB_SCALE</function> macro defines
+      information about a mixer control where each step in the control's
+      value changes the dB value by a constant dB amount.
+      The first parameter is the name of the variable to be defined.
+      The second parameter is the minimum value, in units of 0.01 dB.
+      The third parameter is the step size, in units of 0.01 dB.
+      Set the fourth parameter to 1 if the minimum value actually mutes
+      the control.
+      </para>
+
+      <para>
+      The <function>DECLARE_TLV_DB_LINEAR</function> macro defines
+      information about a mixer control where the control's value affects
+      the output linearly.
+      The first parameter is the name of the variable to be defined.
+      The second parameter is the minimum value, in units of 0.01 dB.
+      The third parameter is the maximum value, in units of 0.01 dB.
+      If the minimum value mutes the control, set the second parameter to
+      <constant>TLV_DB_GAIN_MUTE</constant>.
+      </para>
+    </section>
+
   </chapter>
 
 
@@ -3880,7 +3965,7 @@ struct _snd_pcm_runtime {
   {
           struct mychip *chip = ac97->private_data;
           ....
-          // read a register value here from the codec
+          /* read a register value here from the codec */
           return the_register_value;
   }
 
@@ -3889,7 +3974,7 @@ struct _snd_pcm_runtime {
   {
           struct mychip *chip = ac97->private_data;
           ....
-          // write the given register value to the codec
+          /* write the given register value to the codec */
   }
 
   static int snd_mychip_ac97(struct mychip *chip)
@@ -3902,7 +3987,8 @@ struct _snd_pcm_runtime {
                   .read = snd_mychip_ac97_read,
           };
 
-          if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
+          err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
+          if (err < 0)
                   return err;
           memset(&ac97, 0, sizeof(ac97));
           ac97.private_data = chip;
@@ -4447,10 +4533,10 @@ struct _snd_pcm_runtime {
         <informalexample>
           <programlisting>
 <![CDATA[
-  struct list_head *list;
   struct snd_rawmidi_substream *substream;
-  list_for_each(list, &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
-          substream = list_entry(list, struct snd_rawmidi_substream, list);
+  list_for_each_entry(substream,
+                      &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams,
+                      list {
           sprintf(substream->name, "My MIDI Port %d", substream->number + 1);
   }
   /* same for SNDRV_RAWMIDI_STREAM_INPUT */
diff --git a/Documentation/sound/alsa/OSS-Emulation.txt b/Documentation/sound/alsa/OSS-Emulation.txt
index bfa0c9aacb4b..022aaeb0e9dd 100644
--- a/Documentation/sound/alsa/OSS-Emulation.txt
+++ b/Documentation/sound/alsa/OSS-Emulation.txt
@@ -303,10 +303,3 @@ ICE1712 supports only the unconventional format, interleaved
 the buffer as the conventional (mono or 2-channels, 8 or 16bit) format
 on OSS.
 
-USB devices
------------
-Some USB devices support only 24bit format packed in 3bytes.  This
-format is not supported by OSS and no conversion is provided by kernel
-OSS emulation.  You can use the user-space OSS emulation via libaoss
-instead.
-
diff --git a/Documentation/sound/alsa/hda_codec.txt b/Documentation/sound/alsa/hda_codec.txt
index 4eaae2a45534..8e1b02526698 100644
--- a/Documentation/sound/alsa/hda_codec.txt
+++ b/Documentation/sound/alsa/hda_codec.txt
@@ -49,6 +49,9 @@ struct hda_bus_ops {
 		       unsigned int verb, unsigned int parm);
 	unsigned int (*get_response)(struct hda_codec *codec);
 	void (*private_free)(struct hda_bus *);
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+	void (*pm_notify)(struct hda_codec *codec);
+#endif
 };
 
 The command callback is called when the codec module needs to send a
@@ -56,9 +59,16 @@ VERB to the controller.  It's always a single command.
 The get_response callback is called when the codec requires the answer
 for the last command.  These two callbacks are mandatory and have to
 be given.
-The last, private_free callback, is optional.  It's called in the
+The third, private_free callback, is optional.  It's called in the
 destructor to release any necessary data in the lowlevel driver.
 
+The pm_notify callback is available only with
+CONFIG_SND_HDA_POWER_SAVE kconfig.  It's called when the codec needs
+to power up or may power down.  The controller should check the all
+belonging codecs on the bus whether they are actually powered off
+(check codec->power_on), and optionally the driver may power down the
+contoller side, too.
+
 The bus instance is created via snd_hda_bus_new().  You need to pass
 the card instance, the template, and the pointer to store the
 resultant bus instance.
@@ -86,10 +96,8 @@ resultant codec instance (can be NULL if not needed).
 The codec is stored in a linked list of bus instance.  You can follow
 the codec list like:
 
-	struct list_head *p;
 	struct hda_codec *codec;
-	list_for_each(p, &bus->codec_list) {
-		codec = list_entry(p, struct hda_codec, list);
+	list_for_each_entry(codec, &bus->codec_list, list) {
 		...
 	}
 
@@ -100,10 +108,15 @@ initialization sequence is called when the controls are built later.
 Codec Access
 ============
 
-To access codec, use snd_codec_read() and snd_codec_write().
+To access codec, use snd_hda_codec_read() and snd_hda_codec_write().
 snd_hda_param_read() is for reading parameters.
 For writing a sequence of verbs, use snd_hda_sequence_write().
 
+There are variants of cached read/write, snd_hda_codec_write_cache(),
+snd_hda_sequence_write_cache().  These are used for recording the
+register states for the power-mangement resume.  When no PM is needed,
+these are equivalent with non-cached version.
+
 To retrieve the number of sub nodes connected to the given node, use
 snd_hda_get_sub_nodes().  The connection list can be obtained via
 snd_hda_get_connections() call.
@@ -239,6 +252,10 @@ set the codec->patch_ops field.  This is defined as below:
 		int (*suspend)(struct hda_codec *codec, pm_message_t state);
 		int (*resume)(struct hda_codec *codec);
 	#endif
+	#ifdef CONFIG_SND_HDA_POWER_SAVE
+		int (*check_power_status)(struct hda_codec *codec,
+					  hda_nid_t nid);
+	#endif
 	};
 
 The build_controls callback is called from snd_hda_build_controls().
@@ -251,6 +268,18 @@ The unsol_event callback is called when an unsolicited event is
 received.
 
 The suspend and resume callbacks are for power management.
+They can be NULL if no special sequence is required.  When the resume
+callback is NULL, the driver calls the init callback and resumes the
+registers from the cache.  If other handling is needed, you'd need to
+write your own resume callback.  There, the amp values can be resumed
+via
+	void snd_hda_codec_resume_amp(struct hda_codec *codec);
+and the other codec registers via
+	void snd_hda_codec_resume_cache(struct hda_codec *codec);
+
+The check_power_status callback is called when the amp value of the
+given widget NID is changed.  The codec code can turn on/off the power
+appropriately from this information.
 
 Each entry can be NULL if not necessary to be called.
 
@@ -267,8 +296,7 @@ Digital I/O
 ===========
 
 Call snd_hda_create_spdif_out_ctls() from the patch to create controls
-related with SPDIF out.  In the patch resume callback, call
-snd_hda_resume_spdif().
+related with SPDIF out.
 
 
 Helper Functions
@@ -284,12 +312,7 @@ as a module parameter, and PCI subsystem IDs.  If the matching entry
 is found, it returns the config field value.
 
 snd_hda_add_new_ctls() can be used to create and add control entries.
-Pass the zero-terminated array of struct snd_kcontrol_new.  The same array
-can be passed to snd_hda_resume_ctls() for resume.
-Note that this will call control->put callback of these entries.  So,
-put callback should check codec->in_resume and force to restore the
-given value if it's non-zero even if the value is identical with the
-cached value.
+Pass the zero-terminated array of struct snd_kcontrol_new
 
 Macros HDA_CODEC_VOLUME(), HDA_CODEC_MUTE() and their variables can be
 used for the entry of struct snd_kcontrol_new.
diff --git a/Documentation/sound/alsa/powersave.txt b/Documentation/sound/alsa/powersave.txt
new file mode 100644
index 000000000000..9657e8099228
--- /dev/null
+++ b/Documentation/sound/alsa/powersave.txt
@@ -0,0 +1,41 @@
+Notes on Power-Saving Mode
+==========================
+
+AC97 and HD-audio drivers have the automatic power-saving mode.
+This feature is enabled via Kconfig CONFIG_SND_AC97_POWER_SAVE
+and CONFIG_SND_HDA_POWER_SAVE options, respectively.
+
+With the automatic power-saving, the driver turns off the codec power
+appropriately when no operation is required.  When no applications use
+the device and/or no analog loopback is set, the power disablement is
+done fully or partially.  It'll save a certain power consumption, thus
+good for laptops (even for desktops).
+
+The time-out for automatic power-off can be specified via power_save
+module option of snd-ac97-codec and snd-hda-intel modules.  Specify
+the time-out value in seconds.  0 means to disable the automatic
+power-saving.  The default value of timeout is given via
+CONFIG_SND_AC97_POWER_SAVE_DEFAULT and
+CONFIG_SND_HDA_POWER_SAVE_DEFAULT Kconfig options.  Setting this to 1
+(the minimum value) isn't recommended because many applications try to
+reopen the device frequently.  10 would be a good choice for normal
+operations.
+
+The power_save option is exported as writable.  This means you can
+adjust the value via sysfs on the fly.  For example, to turn on the
+automatic power-save mode with 10 seconds, write to
+/sys/modules/snd_ac97_codec/parameters/power_save (usually as root):
+
+	# echo 10 > /sys/modules/snd_ac97_codec/parameters/power_save
+
+
+Note that you might hear click noise/pop when changing the power
+state.  Also, it often takes certain time to wake up from the
+power-down to the active state.  These are often hardly to fix, so
+don't report extra bug reports unless you have a fix patch ;-)
+
+For HD-audio interface, there is another module option,
+power_save_controller.  This enables/disables the power-save mode of
+the controller side.  Setting this on may reduce a bit more power
+consumption, but might result in longer wake-up time and click noise.
+Try to turn it off when you experience such a thing too often.