1 files changed, 150 insertions, 60 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 4b48c2e82c3c..e985cf5e0410 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -57,7 +57,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
                 - Default: 1
                 - For auto-loading more than one card, specify this
                   option together with snd-card-X aliases.
-
+    slots       - Reserve the slot index for the given driver.
+                  This option takes multiple strings.           
+                  See "Module Autoloading Support" section for details.
   
   Module snd-pcm-oss
   ------------------
@@ -148,13 +150,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
 
-    port        - port # for AD1816A chip (PnP setup)
-    mpu_port    - port # for MPU-401 UART (PnP setup)
-    fm_port     - port # for OPL3 (PnP setup)
-    irq         - IRQ # for AD1816A chip (PnP setup)
-    mpu_irq     - IRQ # for MPU-401 UART (PnP setup)
-    dma1        - first DMA # for AD1816A chip (PnP setup)
-    dma2        - second DMA # for AD1816A chip (PnP setup)
     clockfreq   - Clock frequency for AD1816A chip (default = 0, 33000Hz)
     
     This module supports multiple cards, autoprobe and PnP.
@@ -201,14 +196,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
 
-    port        - port # for ALS100 (SB16) chip (PnP setup)
-    irq         - IRQ # for ALS100 (SB16) chip (PnP setup)
-    dma8        - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
-    dma16       - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
-    mpu_port    - port # for MPU-401 UART (PnP setup)
-    mpu_irq     - IRQ # for MPU-401 (PnP setup)
-    fm_port     - port # for OPL3 FM (PnP setup)
-    
     This module supports multiple cards, autoprobe and PnP.
 
     The power-management is supported.
@@ -302,15 +289,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
 
-    port        - port # for AZT2320 chip (PnP setup)
-    wss_port    - port # for WSS (PnP setup)
-    mpu_port    - port # for MPU-401 UART (PnP setup)
-    fm_port     - FM port # for AZT2320 chip (PnP setup)
-    irq         - IRQ # for AZT2320 (WSS) chip (PnP setup)
-    mpu_irq     - IRQ # for MPU-401 UART (PnP setup)
-    dma1        - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
-    dma2        - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
-    
     This module supports multiple cards, PnP and autoprobe.
     
     The power-management is supported.
@@ -350,6 +328,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on C-Media CMI8330 ISA chips.
 
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     wssport     - port # for CMI8330 chip (WSS)
     wssirq      - IRQ # for CMI8330 chip (WSS)
     wssdma      - first DMA # for CMI8330 chip (WSS)
@@ -404,6 +386,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on CS4232/CS4232A ISA chips.
 
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port        - port # for CS4232 chip (PnP setup - 0x534)
     cport       - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
     mpu_port    - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
@@ -412,10 +398,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     mpu_irq     - IRQ # for MPU-401 UART (9,11,12,15)
     dma1        - first DMA # for CS4232 chip (0,1,3)
     dma2        - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
-    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
     
     This module supports multiple cards. This module does not support autoprobe
-    thus main port must be specified!!! Other ports are optional.
+    (if ISA PnP is not used) thus main port must be specified!!! Other ports are
+    optional.
 
     The power-management is supported.
     
@@ -425,6 +411,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
                                    CS4238B/CS4239 ISA chips.
 
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port        - port # for CS4236 chip (PnP setup - 0x534)
     cport       - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
     mpu_port    - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
@@ -433,7 +423,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     mpu_irq     - IRQ # for MPU-401 UART (9,11,12,15)
     dma1        - first DMA # for CS4236 chip (0,1,3)
     dma2        - second DMA # for CS4236 chip (0,1,3), -1 = disable
-    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
     
     This module supports multiple cards. This module does not support autoprobe
     (if ISA PnP is not used) thus main port and control port must be
@@ -503,13 +492,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
     only)
 
-    port        - Port # (PnP setup)
-    mpu_port    - Port # for MPU-401 (PnP setup)
-    fm_port     - Port # for FM OPL-3 (PnP setup)
-    irq         - IRQ # (PnP setup)
-    mpu_irq     - IRQ # for MPU-401 (PnP setup)
-    dma8        - DMA # (PnP setup)
-
     This module supports multiple cards.  This module is enabled only with
     ISA PnP support.
 
@@ -607,10 +589,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on ESS ES968 chip (PnP only).
 
-    port        - port # for ES968 (SB8) chip (PnP setup)
-    irq         - IRQ # for ES968 (SB8) chip (PnP setup)
-    dma1        - DMA # for ES968 (SB8) chip (PnP setup)
-    
     This module supports multiple cards, PnP and autoprobe.
     
     The power-management is supported.
@@ -633,13 +611,16 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for ESS AudioDrive ES-18xx sound cards.
 
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port        - port # for ES-18xx chip (0x220,0x240,0x260)
     mpu_port    - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
     fm_port     - port # for FM (optional, not used)
     irq         - IRQ # for ES-18xx chip (5,7,9,10)
     dma1        - first DMA # for ES-18xx chip (0,1,3)
     dma2        - first DMA # for ES-18xx chip (0,1,3)
-    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
 
     This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
     port if native ISA PnP routines are not used).
@@ -763,9 +744,12 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
                 VIA VT8251/VT8237A,
                 SIS966, ULI M5461
 
+    [Multiple options for each card instance]
     model       - force the model name
     position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
     probe_mask  - Bitmask to probe codecs (default = -1, meaning all slots)
+    
+    [Single (global) options]
     single_cmd  - Use single immediate commands to communicate with
                 codecs (for debugging only)
     enable_msi  - Enable Message Signaled Interrupt (MSI) (default = off)
@@ -774,8 +758,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     power_save_controller - Reset HD-audio controller in power-saving mode
                 (default = on)
 
-    This module supports one card and autoprobe.
-
+    This module supports multiple cards and autoprobe.
+    
     Each codec may have a model table for different configurations.
     If your machine isn't listed there, the default (usually minimal)
     configuration is set up.  You can pass "model=<name>" option to
@@ -817,17 +801,23 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
           will          Will laptops (PB V7900)
           replacer      Replacer 672V
           basic         fixed pin assignment (old default model)
+          test          for testing/debugging purpose, almost all controls can
+                        adjusted.  Appearing only when compiled with
+                        $CONFIG_SND_DEBUG=y
           auto          auto-config reading BIOS (default)
 
         ALC262
           fujitsu       Fujitsu Laptop
           hp-bpc        HP xw4400/6400/8400/9400 laptops
           hp-bpc-d7000  HP BPC D7000
+          hp-tc-t5735   HP Thin Client T5735
+          hp-rp5700     HP RP5700
           benq          Benq ED8
           benq-t31      Benq T31
           hippo         Hippo (ATI) with jack detection, Sony UX-90s
           hippo_1       Hippo (Benq) with jack detection
           sony-assamd   Sony ASSAMD
+          ultra         Samsung Q1 Ultra Vista model
           basic         fixed pin assignment w/o SPDIF
           auto          auto-config reading BIOS (default)
 
@@ -835,6 +825,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
           3stack        3-stack model
           toshiba       Toshiba A205
           acer          Acer laptops
+          dell          Dell OEM laptops (Vostro 1200)
+          test          for testing/debugging purpose, almost all controls can
+                        adjusted.  Appearing only when compiled with
+                        $CONFIG_SND_DEBUG=y
           auto          auto-config reading BIOS (default)
 
         ALC662
@@ -843,6 +837,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
           3stack-6ch-dig 3-stack (6-channel) with SPDIF
           6stack-dig     6-stack with SPDIF
           lenovo-101e    Lenovo laptop
+          eeepc-p701    ASUS Eeepc P701
+          eeepc-ep20    ASUS Eeepc EP20
           auto          auto-config reading BIOS (default)
 
         ALC882/885
@@ -877,6 +873,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
           haier-w66     Haier W66
           6stack-hp     HP machines with 6stack (Nettle boards)
           3stack-hp     HP machines with 3stack (Lucknow, Samba boards)
+          6stack-dell   Dell machines with 6stack (Inspiron 530)
+          mitac         Mitac 8252D
           auto          auto-config reading BIOS (default)
 
         ALC861/660
@@ -928,6 +926,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
         AD1984
           basic         default configuration
           thinkpad      Lenovo Thinkpad T61/X61
+          dell          Dell T3400
 
         AD1986A
           6stack        6-jack, separate surrounds (default)
@@ -947,7 +946,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
           auto          auto-config reading BIOS (default)
         
         Conexant 5045
-          laptop        Laptop config 
+          laptop-hpsense    Laptop with HP sense (old model laptop)
+          laptop-micsense   Laptop with Mic sense (old model fujitsu)
+          laptop-hpmicsense Laptop with HP and Mic senses
+          benq          Benq R55E
           test          for testing/debugging purpose, almost all controls
                         can be adjusted.  Appearing only when compiled with
                         $CONFIG_SND_DEBUG=y
@@ -960,6 +962,10 @@ 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
 
+        Conexant 5051
+          laptop        Basic Laptop config (default)
+          hp            HP Spartan laptop
+
         STAC9200
           ref           Reference board
           dell-d21      Dell (unknown)
@@ -1091,6 +1097,15 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     See hdspm.txt for details.
 
+  Module snd-hifier
+  -----------------
+
+    Module for the MediaTek/TempoTec HiFier Fantasia sound card.
+
+    This module supports autoprobe and multiple cards.
+
+    Power management is _not_ supported.
+
   Module snd-ice1712
   ------------------
 
@@ -1156,11 +1171,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
                         * Chaintech 9CJS
                         * Chaintech AV-710
                         * Shuttle SN25P
+                        * Onkyo SE-90PCI
+                        * Onkyo SE-200PCI
 
     model       - Use the given board model, one of the following:
                   revo51, revo71, amp2000, prodigy71, prodigy71lt,
                   prodigy192, aureon51, aureon71, universe, ap192,
-                  k8x800, phase22, phase28, ms300, av710
+                  k8x800, phase22, phase28, ms300, av710, se200pci,
+                  se90pci
 
     This module supports multiple cards and autoprobe.
 
@@ -1257,15 +1275,19 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
     and other sound cards based on AMD InterWave (tm) chip.
   
-    port        - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
-    irq         - IRQ # for InterWave chip (3,5,9,11,12,15)
-    dma1        - DMA # for InterWave chip (0,1,3,5,6,7)
-    dma2        - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
     joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
     midi        - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
     pcm_voices  - reserved PCM voices for the synthesizer (default 2)
     effect      - 1 = InterWave effects enable (default 0);
                   requires 8 voices
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
+    port        - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
+    irq         - IRQ # for InterWave chip (3,5,9,11,12,15)
+    dma1        - DMA # for InterWave chip (0,1,3,5,6,7)
+    dma2        - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
 
     This module supports multiple cards, autoprobe and ISA PnP.
 
@@ -1276,16 +1298,20 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     and other sound cards based on AMD InterWave (tm) chip with TEA6330T
     circuit for extended control of bass, treble and master volume.
   
-    port        - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
-    port_tc     - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
-    irq         - IRQ # for InterWave chip (3,5,9,11,12,15)
-    dma1        - DMA # for InterWave chip (0,1,3,5,6,7)
-    dma2        - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
     joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
     midi        - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
     pcm_voices  - reserved PCM voices for the synthesizer (default 2)
     effect      - 1 = InterWave effects enable (default 0);
                   requires 8 voices
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
+    port        - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
+    port_tc     - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
+    irq         - IRQ # for InterWave chip (3,5,9,11,12,15)
+    dma1        - DMA # for InterWave chip (0,1,3,5,6,7)
+    dma2        - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
 
     This module supports multiple cards, autoprobe and ISA PnP.
 
@@ -1473,6 +1499,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for Yamaha OPL3-SA2/SA3 sound cards.
 
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port        - control port # for OPL3-SA chip (0x370)
     sb_port     - SB port # for OPL3-SA chip (0x220,0x240)
     wss_port    - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
@@ -1481,7 +1511,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     irq         - IRQ # for OPL3-SA chip (5,7,9,10)
     dma1        - first DMA # for Yamaha OPL3-SA chip (0,1,3)
     dma2        - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
-    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
     
     This module supports multiple cards and ISA PnP.  It does not support
     autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
@@ -1494,6 +1523,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
     Module works with OAK Mozart cards as well.
     
+    isapnp    - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port      - port # for WSS chip (0x530,0xe80,0xf40,0x604)
     mpu_port  - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
     fm_port   - port # for OPL3 device (0x388)
@@ -1508,6 +1541,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
     
+    isapnp    - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port      - port # for WSS chip (0x530,0xe80,0xf40,0x604)
     mpu_port  - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
     fm_port   - port # for OPL3 device (0x388)
@@ -1523,6 +1560,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for sound cards based on OPTi 82c93x chips.
     
+    isapnp    - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port      - port # for WSS chip (0x530,0xe80,0xf40,0x604)
     mpu_port  - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
     fm_port   - port # for OPL3 device (0x388)
@@ -1533,6 +1574,22 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     This module supports only one card, autoprobe and PnP.
 
+  Module snd-oxygen
+  -----------------
+
+    Module for sound cards based on the C-Media CMI8788 chip:
+    * Asound A-8788
+    * AuzenTech X-Meridian
+    * Bgears b-Enspirer
+    * Club3D Theatron DTS
+    * HT-Omega Claro
+    * Razer Barracuda AC-1
+    * Sondigo Inferno
+
+    This module supports autoprobe and multiple cards.
+
+    Power management is _not_ supported.
+
   Module snd-pcxhr
   ----------------
 
@@ -1647,6 +1704,12 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
                                           SoundBlaster AWE 32 (PnP),
                                           SoundBlaster AWE 64 PnP
 
+    mic_agc     - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
+    csp         - ASP/CSP chip support - 0 = disable (default), 1 = enable
+    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     port        - port # for SB DSP 4.x chip (0x220,0x240,0x260)
     mpu_port    - port # for MPU-401 UART (0x300,0x330), -1 = disable
     awe_port    - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
@@ -1654,9 +1717,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     irq         - IRQ # for SB DSP 4.x chip (5,7,9,10)
     dma8        - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
     dma16       - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
-    mic_agc     - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
-    csp         - ASP/CSP chip support - 0 = disable (default), 1 = enable
-    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
     
     This module supports multiple cards, autoprobe and ISA PnP.
 
@@ -1739,18 +1799,21 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
 
+    use_cs4232_midi - Use CS4232 MPU-401 interface
+                      (inaccessibly located inside your computer)
+    isapnp          - ISA PnP detection - 0 = disable, 1 = enable (default)
+
+    with isapnp=0, the following options are available:
+
     cs4232_pcm_port - Port # for CS4232 PCM interface.
     cs4232_pcm_irq  - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
     cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
     cs4232_mpu_irq  - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
-    use_cs4232_midi - Use CS4232 MPU-401 interface
-                      (inaccessibly located inside your computer)
     ics2115_port    - Port # for ICS2115
     ics2115_irq     - IRQ # for ICS2115
     fm_port         - FM OPL-3 Port #
     dma1            - DMA1 # for CS4232 PCM interface.
     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)
@@ -1965,6 +2028,16 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     
     This module supports multiple cards.
 
+  Module snd-virtuoso
+  -------------------
+
+    Module for sound cards based on the Asus AV200 chip, i.e.,
+    Xonar D2 and Xonar D2X.
+
+    This module supports autoprobe and multiple cards.
+
+    Power management is _not_ supported.
+
   Module snd-vx222
   ----------------
 
@@ -2135,6 +2208,23 @@ alias sound-slot-1 snd-ens1371
 In this example, the interwave card is always loaded as the first card
 (index 0) and ens1371 as the second (index 1).
 
+Alternative (and new) way to fixate the slot assignment is to use
+"slots" option of snd module.  In the case above, specify like the
+following: 
+
+options snd slots=snd-interwave,snd-ens1371
+
+Then, the first slot (#0) is reserved for snd-interwave driver, and
+the second (#1) for snd-ens1371.  You can omit index option in each
+driver if slots option is used (although you can still have them at
+the same time as long as they don't conflict).
+
+The slots option is especially useful for avoiding the possible
+hot-plugging and the resultant slot conflict.  For example, in the
+case above again, the first two slots are already reserved.  If any
+other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
+snd-ens1371, it will be assigned to the third or later slot.
+
 
 ALSA PCM devices to OSS devices mapping
 =======================================