diff options
Diffstat (limited to 'Documentation')
14 files changed, 389 insertions, 21 deletions
diff --git a/Documentation/DocBook/writing-an-alsa-driver.tmpl b/Documentation/DocBook/writing-an-alsa-driver.tmpl index 6f639d9530b5..784793df81ed 100644 --- a/Documentation/DocBook/writing-an-alsa-driver.tmpl +++ b/Documentation/DocBook/writing-an-alsa-driver.tmpl @@ -2742,7 +2742,9 @@ struct _snd_pcm_runtime { <para> Another note is that this callback is non-atomic - (schedulable). This is important, because the + (schedulable) as default, i.e. when no + <structfield>nonatomic</structfield> flag set. + This is important, because the <structfield>trigger</structfield> callback is atomic (non-schedulable). That is, mutexes or any schedule-related functions are not available in @@ -2900,8 +2902,9 @@ struct _snd_pcm_runtime { </para> <para> - As mentioned, this callback is atomic. You cannot call - functions which may sleep. + As mentioned, this callback is atomic as default unless + <structfield>nonatomic</structfield> flag set, and + you cannot call functions which may sleep. The trigger callback should be as minimal as possible, just really triggering the DMA. The other stuff should be initialized hw_params and prepare callbacks properly @@ -2936,7 +2939,7 @@ struct _snd_pcm_runtime { </para> <para> - This callback is also atomic. + This callback is also atomic as default. </para> </section> @@ -2972,7 +2975,7 @@ struct _snd_pcm_runtime { is useful only for such a purpose. </para> <para> - This callback is atomic. + This callback is atomic as default. </para> </section> @@ -3175,6 +3178,21 @@ struct _snd_pcm_runtime { called with local interrupts disabled. </para> + <para> + The recent changes in PCM core code, however, allow all PCM + operations to be non-atomic. This assumes that the all caller + sides are in non-atomic contexts. For example, the function + <function>snd_pcm_period_elapsed()</function> is called + typically from the interrupt handler. But, if you set up the + driver to use a threaded interrupt handler, this call can be in + non-atomic context, too. In such a case, you can set + <structfield>nonatomic</structfield> filed of + <structname>snd_pcm</structname> object after creating it. + When this flag is set, mutex and rwsem are used internally in + the PCM core instead of spin and rwlocks, so that you can call + all PCM functions safely in a non-atomic context. + </para> + </section> <section id="pcm-interface-constraints"> <title>Constraints</title> diff --git a/Documentation/devicetree/bindings/sound/adi,ssm2602.txt b/Documentation/devicetree/bindings/sound/adi,ssm2602.txt new file mode 100644 index 000000000000..3b3302fe399b --- /dev/null +++ b/Documentation/devicetree/bindings/sound/adi,ssm2602.txt @@ -0,0 +1,19 @@ +Analog Devices SSM2602, SSM2603 and SSM2604 I2S audio CODEC devices + +SSM2602 support both I2C and SPI as the configuration interface, +the selection is made by the MODE strap-in pin. +SSM2603 and SSM2604 only support I2C as the configuration interface. + +Required properties: + + - compatible : One of "adi,ssm2602", "adi,ssm2603" or "adi,ssm2604" + + - reg : the I2C address of the device for I2C, the chip select + number for SPI. + + Example: + + ssm2602: ssm2602@1a { + compatible = "adi,ssm2602"; + reg = <0x1a>; + }; diff --git a/Documentation/devicetree/bindings/sound/cs35l32.txt b/Documentation/devicetree/bindings/sound/cs35l32.txt new file mode 100644 index 000000000000..1417d3f5cc22 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/cs35l32.txt @@ -0,0 +1,62 @@ +CS35L32 audio CODEC + +Required properties: + + - compatible : "cirrus,cs35l32" + + - reg : the I2C address of the device for I2C. Address is determined by the level + of the AD0 pin. Level 0 is 0x40 while Level 1 is 0x41. + + - VA-supply, VP-supply : power supplies for the device, + as covered in Documentation/devicetree/bindings/regulator/regulator.txt. + +Optional properties: + + - reset-gpios : a GPIO spec for the reset pin. If specified, it will be + deasserted before communication to the codec starts. + + - cirrus,boost-manager : Boost voltage control. + 0 = Automatically managed. Boost-converter output voltage is the higher + of the two: Class G or adaptive LED voltage. + 1 = Automatically managed irrespective of audio, adapting for low-power + dissipation when LEDs are ON, and operating in Fixed-Boost Bypass Mode + if LEDs are OFF (VBST = VP). + 2 = (Default) Boost voltage fixed in Bypass Mode (VBST = VP). + 3 = Boost voltage fixed at 5 V. + + - cirrus,sdout-datacfg : Data configuration for dual CS35L32 applications only. + Determines the data packed in a two-CS35L32 configuration. + 0 = Left/right channels VMON[11:0], IMON[11:0], VPMON[7:0]. + 1 = Left/right channels VMON[11:0], IMON[11:0], STATUS. + 2 = (Default) left/right channels VMON[15:0], IMON [15:0]. + 3 = Left/right channels VPMON[7:0], STATUS. + + - cirrus,sdout-share : SDOUT sharing. Determines whether one or two CS35L32 + devices are on board sharing SDOUT. + 0 = (Default) One IC. + 1 = Two IC's. + + - cirrus,battery-recovery : Low battery nominal recovery threshold, rising VP. + 0 = 3.1V + 1 = 3.2V + 2 = 3.3V (Default) + 3 = 3.4V + + - cirrus,battery-threshold : Low battery nominal threshold, falling VP. + 0 = 3.1V + 1 = 3.2V + 2 = 3.3V + 3 = 3.4V (Default) + 4 = 3.5V + 5 = 3.6V + +Example: + +codec: codec@40 { + compatible = "cirrus,cs35l32"; + reg = <0x40>; + reset-gpios = <&gpio 10 0>; + cirrus,boost-manager = <0x03>; + cirrus,sdout-datacfg = <0x02>; + VA-supply = <®_audio>; +}; diff --git a/Documentation/devicetree/bindings/sound/es8328.txt b/Documentation/devicetree/bindings/sound/es8328.txt new file mode 100644 index 000000000000..30ea8a318ae9 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/es8328.txt @@ -0,0 +1,38 @@ +Everest ES8328 audio CODEC + +This device supports both I2C and SPI. + +Required properties: + + - compatible : "everest,es8328" + - DVDD-supply : Regulator providing digital core supply voltage 1.8 - 3.6V + - AVDD-supply : Regulator providing analog supply voltage 3.3V + - PVDD-supply : Regulator providing digital IO supply voltage 1.8 - 3.6V + - IPVDD-supply : Regulator providing analog output voltage 3.3V + - clocks : A 22.5792 or 11.2896 MHz clock + - reg : the I2C address of the device for I2C, the chip select number for SPI + +Pins on the device (for linking into audio routes): + + * LOUT1 + * LOUT2 + * ROUT1 + * ROUT2 + * LINPUT1 + * RINPUT1 + * LINPUT2 + * RINPUT2 + * Mic Bias + + +Example: + +codec: es8328@11 { + compatible = "everest,es8328"; + DVDD-supply = <®_3p3v>; + AVDD-supply = <®_3p3v>; + PVDD-supply = <®_3p3v>; + HPVDD-supply = <®_3p3v>; + clocks = <&clks 169>; + reg = <0x11>; +}; diff --git a/Documentation/devicetree/bindings/sound/fsl,esai.txt b/Documentation/devicetree/bindings/sound/fsl,esai.txt index aeb8c4a0b88d..52f5b6bf3e8e 100644 --- a/Documentation/devicetree/bindings/sound/fsl,esai.txt +++ b/Documentation/devicetree/bindings/sound/fsl,esai.txt @@ -7,7 +7,8 @@ other DSPs. It has up to six transmitters and four receivers. Required properties: - - compatible : Compatible list, must contain "fsl,imx35-esai". + - compatible : Compatible list, must contain "fsl,imx35-esai" or + "fsl,vf610-esai" - reg : Offset and length of the register set for the device. diff --git a/Documentation/devicetree/bindings/sound/fsl,ssi.txt b/Documentation/devicetree/bindings/sound/fsl,ssi.txt index 3aa4a8f528f4..5b76be45d18b 100644 --- a/Documentation/devicetree/bindings/sound/fsl,ssi.txt +++ b/Documentation/devicetree/bindings/sound/fsl,ssi.txt @@ -58,13 +58,7 @@ Optional properties: Documentation/devicetree/bindings/dma/dma.txt. - dma-names: Two dmas have to be defined, "tx" and "rx", if fsl,imx-fiq is not defined. -- fsl,mode: The operating mode for the SSI interface. - "i2s-slave" - I2S mode, SSI is clock slave - "i2s-master" - I2S mode, SSI is clock master - "lj-slave" - left-justified mode, SSI is clock slave - "lj-master" - l.j. mode, SSI is clock master - "rj-slave" - right-justified mode, SSI is clock slave - "rj-master" - r.j., SSI is clock master +- fsl,mode: The operating mode for the AC97 interface only. "ac97-slave" - AC97 mode, SSI is clock slave "ac97-master" - AC97 mode, SSI is clock master diff --git a/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt b/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt new file mode 100644 index 000000000000..a96774c194c8 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt @@ -0,0 +1,82 @@ +Freescale Generic ASoC Sound Card with ASRC support + +The Freescale Generic ASoC Sound Card can be used, ideally, for all Freescale +SoCs connecting with external CODECs. + +The idea of this generic sound card is a bit like ASoC Simple Card. However, +for Freescale SoCs (especially those released in recent years), most of them +have ASRC (Documentation/devicetree/bindings/sound/fsl,asrc.txt) inside. And +this is a specific feature that might be painstakingly controlled and merged +into the Simple Card. + +So having this generic sound card allows all Freescale SoC users to benefit +from the simplification of a new card support and the capability of the wide +sample rates support through ASRC. + +Note: The card is initially designed for those sound cards who use I2S and + PCM DAI formats. However, it'll be also possible to support those non + I2S/PCM type sound cards, such as S/PDIF audio and HDMI audio, as long + as the driver has been properly upgraded. + + +The compatible list for this generic sound card currently: + "fsl,imx-audio-cs42888" + + "fsl,imx-audio-wm8962" + (compatible with Documentation/devicetree/bindings/sound/imx-audio-wm8962.txt) + + "fsl,imx-audio-sgtl5000" + (compatible with Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt) + +Required properties: + + - compatible : Contains one of entries in the compatible list. + + - model : The user-visible name of this sound complex + + - audio-cpu : The phandle of an CPU DAI controller + + - audio-codec : The phandle of an audio codec + + - audio-routing : A list of the connections between audio components. + Each entry is a pair of strings, the first being the + connection's sink, the second being the connection's + source. There're a few pre-designed board connectors: + * Line Out Jack + * Line In Jack + * Headphone Jack + * Mic Jack + * Ext Spk + * AMIC (stands for Analog Microphone Jack) + * DMIC (stands for Digital Microphone Jack) + + Note: The "Mic Jack" and "AMIC" are redundant while + coexsiting in order to support the old bindings + of wm8962 and sgtl5000. + +Optional properties: + + - audio-asrc : The phandle of ASRC. It can be absent if there's no + need to add ASRC support via DPCM. + +Example: +sound-cs42888 { + compatible = "fsl,imx-audio-cs42888"; + model = "cs42888-audio"; + audio-cpu = <&esai>; + audio-asrc = <&asrc>; + audio-codec = <&cs42888>; + audio-routing = + "Line Out Jack", "AOUT1L", + "Line Out Jack", "AOUT1R", + "Line Out Jack", "AOUT2L", + "Line Out Jack", "AOUT2R", + "Line Out Jack", "AOUT3L", + "Line Out Jack", "AOUT3R", + "Line Out Jack", "AOUT4L", + "Line Out Jack", "AOUT4R", + "AIN1L", "Line In Jack", + "AIN1R", "Line In Jack", + "AIN2L", "Line In Jack", + "AIN2R", "Line In Jack"; +}; diff --git a/Documentation/devicetree/bindings/sound/fsl-sai.txt b/Documentation/devicetree/bindings/sound/fsl-sai.txt index 0f4e23828190..4956b14d4b06 100644 --- a/Documentation/devicetree/bindings/sound/fsl-sai.txt +++ b/Documentation/devicetree/bindings/sound/fsl-sai.txt @@ -18,12 +18,26 @@ Required properties: - pinctrl-names: Must contain a "default" entry. - pinctrl-NNN: One property must exist for each entry in pinctrl-names. See ../pinctrl/pinctrl-bindings.txt for details of the property values. -- big-endian-regs: If this property is absent, the little endian mode will - be in use as default, or the big endian mode will be in use for all the - device registers. -- big-endian-data: If this property is absent, the little endian mode will - be in use as default, or the big endian mode will be in use for all the - fifo data. +- big-endian: Boolean property, required if all the FTM_PWM registers + are big-endian rather than little-endian. +- lsb-first: Configures whether the LSB or the MSB is transmitted first for + the fifo data. If this property is absent, the MSB is transmitted first as + default, or the LSB is transmitted first. +- fsl,sai-synchronous-rx: This is a boolean property. If present, indicating + that SAI will work in the synchronous mode (sync Tx with Rx) which means + both the transimitter and receiver will send and receive data by following + receiver's bit clocks and frame sync clocks. +- fsl,sai-asynchronous: This is a boolean property. If present, indicating + that SAI will work in the asynchronous mode, which means both transimitter + and receiver will send and receive data by following their own bit clocks + and frame sync clocks separately. + +Note: +- If both fsl,sai-asynchronous and fsl,sai-synchronous-rx are absent, the + default synchronous mode (sync Rx with Tx) will be used, which means both + transimitter and receiver will send and receive data by following clocks + of transimitter. +- fsl,sai-asynchronous and fsl,sai-synchronous-rx are exclusive. Example: sai2: sai@40031000 { @@ -38,6 +52,6 @@ sai2: sai@40031000 { dma-names = "tx", "rx"; dmas = <&edma0 0 VF610_EDMA_MUXID0_SAI2_TX>, <&edma0 0 VF610_EDMA_MUXID0_SAI2_RX>; - big-endian-regs; - big-endian-data; + big-endian; + lsb-first; }; diff --git a/Documentation/devicetree/bindings/sound/imx-audio-es8328.txt b/Documentation/devicetree/bindings/sound/imx-audio-es8328.txt new file mode 100644 index 000000000000..07b68ab206fb --- /dev/null +++ b/Documentation/devicetree/bindings/sound/imx-audio-es8328.txt @@ -0,0 +1,60 @@ +Freescale i.MX audio complex with ES8328 codec + +Required properties: +- compatible : "fsl,imx-audio-es8328" +- model : The user-visible name of this sound complex +- ssi-controller : The phandle of the i.MX SSI controller +- jack-gpio : Optional GPIO for headphone jack +- audio-amp-supply : Power regulator for speaker amps +- audio-codec : The phandle of the ES8328 audio codec +- audio-routing : A list of the connections between audio components. + Each entry is a pair of strings, the first being the + connection's sink, the second being the connection's + source. Valid names could be power supplies, ES8328 + pins, and the jacks on the board: + + Power supplies: + * audio-amp + + ES8328 pins: + * LOUT1 + * LOUT2 + * ROUT1 + * ROUT2 + * LINPUT1 + * LINPUT2 + * RINPUT1 + * RINPUT2 + * Mic PGA + + Board connectors: + * Headphone + * Speaker + * Mic Jack +- mux-int-port : The internal port of the i.MX audio muxer (AUDMUX) +- mux-ext-port : The external port of the i.MX audio muxer (AUDMIX) + +Note: The AUDMUX port numbering should start at 1, which is consistent with +hardware manual. + +Example: + +sound { + compatible = "fsl,imx-audio-es8328"; + model = "imx-audio-es8328"; + ssi-controller = <&ssi1>; + audio-codec = <&codec>; + jack-gpio = <&gpio5 15 0>; + audio-amp-supply = <®_audio_amp>; + audio-routing = + "Speaker", "LOUT2", + "Speaker", "ROUT2", + "Speaker", "audio-amp", + "Headphone", "ROUT1", + "Headphone", "LOUT1", + "LINPUT1", "Mic Jack", + "RINPUT1", "Mic Jack", + "Mic Jack", "Mic Bias"; + mux-int-port = <1>; + mux-ext-port = <3>; +}; diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt index 9c7c55c71370..c949abc2992f 100644 --- a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt +++ b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt @@ -25,6 +25,7 @@ Required properties: Optional properties: - nvidia,hp-det-gpios : The GPIO that detect headphones are plugged in +- nvidia,mic-det-gpios : The GPIO that detect microphones are plugged in Example: diff --git a/Documentation/devicetree/bindings/sound/rt5677.txt b/Documentation/devicetree/bindings/sound/rt5677.txt new file mode 100644 index 000000000000..0701b834fc73 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rt5677.txt @@ -0,0 +1,59 @@ +RT5677 audio CODEC + +This device supports I2C only. + +Required properties: + +- compatible : "realtek,rt5677". + +- reg : The I2C address of the device. + +- interrupts : The CODEC's interrupt output. + +- gpio-controller : Indicates this device is a GPIO controller. + +- #gpio-cells : Should be two. The first cell is the pin number and the + second cell is used to specify optional parameters (currently unused). + +Optional properties: + +- realtek,pow-ldo2-gpio : The GPIO that controls the CODEC's POW_LDO2 pin. + +- realtek,in1-differential +- realtek,in2-differential +- realtek,lout1-differential +- realtek,lout2-differential +- realtek,lout3-differential + Boolean. Indicate MIC1/2 input and LOUT1/2/3 outputs are differential, + rather than single-ended. + +Pins on the device (for linking into audio routes): + + * IN1P + * IN1N + * IN2P + * IN2N + * MICBIAS1 + * DMIC1 + * DMIC2 + * DMIC3 + * DMIC4 + * LOUT1 + * LOUT2 + * LOUT3 + +Example: + +rt5677 { + compatible = "realtek,rt5677"; + reg = <0x2c>; + interrupt-parent = <&gpio>; + interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>; + + gpio-controller; + #gpio-cells = <2>; + + realtek,pow-ldo2-gpio = + <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>; + realtek,in1-differential = "true"; +}; diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt index c2e9841dfce4..c3cba600bf11 100644 --- a/Documentation/devicetree/bindings/sound/simple-card.txt +++ b/Documentation/devicetree/bindings/sound/simple-card.txt @@ -17,6 +17,10 @@ Optional properties: source. - simple-audio-card,mclk-fs : Multiplication factor between stream rate and codec mclk. +- simple-audio-card,hp-det-gpio : Reference to GPIO that signals when + headphones are attached. +- simple-audio-card,mic-det-gpio : Reference to GPIO that signals when + a microphone is attached. Optional subnodes: diff --git a/Documentation/devicetree/bindings/sound/ssm4567.txt b/Documentation/devicetree/bindings/sound/ssm4567.txt new file mode 100644 index 000000000000..ec3d9e7004b5 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/ssm4567.txt @@ -0,0 +1,15 @@ +Analog Devices SSM4567 audio amplifier + +This device supports I2C only. + +Required properties: + - compatible : Must be "adi,ssm4567" + - reg : the I2C address of the device. This will either be 0x34 (LR_SEL/ADDR connected to AGND), + 0x35 (LR_SEL/ADDR connected to IOVDD) or 0x36 (LR_SEL/ADDR open). + +Example: + + ssm4567: ssm4567@34 { + compatible = "adi,ssm4567"; + reg = <0x34>; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 653beaa392dc..71259df60e96 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -51,6 +51,7 @@ epfl Ecole Polytechnique Fédérale de Lausanne epson Seiko Epson Corp. est ESTeem Wireless Modems eukrea Eukréa Electromatique +everest Everest Semiconductor Co. Ltd. excito Excito fcs Fairchild Semiconductor fsl Freescale Semiconductor |