修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/Documentation/sound/designs/tracepoints.rst
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 interaction between applications and ALSA PCM core. Once decided, runtime of
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 the PCM substream keeps the parameters.
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-The parameters are described in :c:type:`struct snd_pcm_hw_params`. This
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+The parameters are described in struct snd_pcm_hw_params. This
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 structure includes several types of parameters. Applications set preferable
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 value to these parameters, then execute ioctl(2) with SNDRV_PCM_IOCTL_HW_REFINE
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 or SNDRV_PCM_IOCTL_HW_PARAMS. The former is used just for refining available
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 set of parameters. The latter is used for an actual decision of the parameters.
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-The :c:type:`struct snd_pcm_hw_params` structure has below members:
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+The struct snd_pcm_hw_params structure has below members:
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 ``flags``
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         Configurable. ALSA PCM core and some drivers handle this flag to select
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         convenient parameters or change their behaviour.
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 ``masks``
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         Configurable. This type of parameter is described in
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-        :c:type:`struct snd_mask` and represent mask values. As of PCM protocol
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+        struct snd_mask and represent mask values. As of PCM protocol
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         v2.0.13, three types are defined.
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         - SNDRV_PCM_HW_PARAM_ACCESS
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         - SNDRV_PCM_HW_PARAM_SUBFORMAT
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 ``intervals``
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         Configurable. This type of parameter is described in
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-        :c:type:`struct snd_interval` and represent values with a range. As of
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+        struct snd_interval and represent values with a range. As of
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         PCM protocol v2.0.13, twelve types are defined.
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         - SNDRV_PCM_HW_PARAM_SAMPLE_BITS
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         are going to be changed.
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 ``cmask``
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         Read-only. After returning from ioctl(2), buffer in user space for
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-        :c:type:`struct snd_pcm_hw_params` includes result of each operation.
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+        struct snd_pcm_hw_params includes result of each operation.
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         This mask represents which mask/interval parameter is actually changed.
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 ``info``
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         Read-only. This represents hardware/driver capabilities as bit flags
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         value to this parameter but some drivers intentionally set zero with
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         a care of hardware design or data transmission protocol.
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-ALSA PCM core handles buffer of :c:type:`struct snd_pcm_hw_params` when
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+ALSA PCM core handles buffer of struct snd_pcm_hw_params when
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 applications execute ioctl(2) with SNDRV_PCM_HW_REFINE or SNDRV_PCM_HW_PARAMS.
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 Parameters in the buffer are changed according to
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-:c:type:`struct snd_pcm_hardware` and rules of constraints in the runtime. The
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+struct snd_pcm_hardware and rules of constraints in the runtime. The
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 structure describes capabilities of handled hardware. The rules describes
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 dependencies on which a parameter is decided according to several parameters.
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 A rule has a callback function, and drivers can register arbitrary functions
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 runtime as a default.
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 Each driver can join in the interaction as long as it prepared for two stuffs
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-in a callback of :c:type:`struct snd_pcm_ops.open`.
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+in a callback of struct snd_pcm_ops.open.
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 1. In the callback, drivers are expected to change a member of
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-   :c:type:`struct snd_pcm_hardware` type in the runtime, according to
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+   struct snd_pcm_hardware type in the runtime, according to
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    capacities of corresponding hardware.
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 2. In the same callback, drivers are also expected to register additional rules
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    of constraints into the runtime when several parameters have dependencies
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    due to hardware design.
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 The driver can refers to result of the interaction in a callback of
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-:c:type:`struct snd_pcm_ops.hw_params`, however it should not change the
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+struct snd_pcm_ops.hw_params, however it should not change the
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 content.
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 Tracepoints in this category are designed to trace changes of the
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 type, the fields represent hexadecimal dump of content of the parameter. For
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 parameters of interval type, the fields represent values of each member of
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 ``empty``, ``integer``, ``openmin``, ``min``, ``max``, ``openmax`` in
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-:c:type:`struct snd_interval` in this order.
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+struct snd_interval in this order.
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 Tracepoints in drivers
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 ======================