Re: [PATCH v8 0/2] ALSA: Add driver for big Scarlett 4th Gen interfaces

[Takashi Iwai <tiwai@xxxxxxx>]

On Thu, 16 Jan 2025 18:47:07 +0100,
Geoffrey D. Bennett wrote:
> 
> Hi Takashi,
> 
> Thanks again! All changes from your feedback on v7 incorporated in v8.

Now applied to for-next branch.


thanks,

Takashi

> 
> Regards,
> Geoffrey.
> 
> ---
> Changes in v8:
> - Rename SNDRV_CTL_TLVT_LABELS to SNDRV_CTL_TLVT_FCP_CHANNEL_LABELS
> - Make meter levels buffer persistent rather than allocate/free each
>   time
> - Add data protection to fcp_meter_tlv_callback()
> - Set private->step* and co after allocation of the buffer
> - Use ALIGN() rather than open-coding it
> 
> ---
> Changes in v7:
> - Add #define SNDRV_CTL_TLVT_LABELS for channel labels
> - Add ioctl for setting meter labels and remove TLV write support
> - Simplify reinit handling
> - Remove more unnecessary casts
> - Add #define FCP_SEGMENT_APP_GOLD to remove hardcoded value
> 
> ---
> Changes in v6:
> - Move re-initialisation out of fcp_usb() so it's clear there's no
>   infinite recursion
> - Update theory of operation and clarify the use of meter TLV metadata
> - Rename meter_labels to meter_metadata for clarity
> - Remove unnecessary casts in fcp_ioctl_cmd()
> 
> ---
> Changes in v5:
> - Remove version/union complexity from init ioctl
> - Add documentation to clarify ioctl usage and big picture
> 
> ---
> Changes in v4:
> - Use variable-length data arrays in ioctl structs instead of pointers
> - Add CAP_SYS_RAWIO requirement to hwdep interface
> - Add validation of flash commands to prevent accidental bricking due
>   to erasing/writing the App_Gold segment
> - Refactor URB cleanup
> 
> ---
> Changes in v3:
> - Update ioctl structs and add ioctl_compat op to work with 32-bit
>   userspace on 64-bit kernels
> - Update driver to do all init steps so it can re-init after
>   suspend/resume
> - Add version field to init ioctl for future compatibility
> - Improve error messages when unexpected response data is received
> 
> ---
> Changes in v2 as per Takashi's feedback:
> - Use fixed-size data arrays instead of pointers in ioctl structs
> - Define notify struct outside of struct fcp_dev
> - Use u8/u16 types without __ prefix
> - Use cleanup.h for code simplification
> - Add init flag to ensure FCP_IOCTL_INIT is called before
>   FCP_IOCTL_CMD and FCP_IOCTL_SET_METER_MAP
> - Do not destroy/recreate the meter control (the number of channels is
>   now fixed when it is created)
> 
> Geoffrey D. Bennett (2):
>   ALSA: FCP: Add Focusrite Control Protocol driver
>   ALSA: scarlett2: Add device_setup option to use FCP driver
> 
>  MAINTAINERS                 |   10 +-
>  include/uapi/sound/fcp.h    |  120 ++++
>  include/uapi/sound/tlv.h    |    2 +
>  sound/usb/Makefile          |    1 +
>  sound/usb/fcp.c             | 1134 +++++++++++++++++++++++++++++++++++
>  sound/usb/fcp.h             |    7 +
>  sound/usb/mixer_quirks.c    |    7 +
>  sound/usb/mixer_scarlett2.c |    8 +
>  8 files changed, 1285 insertions(+), 4 deletions(-)
>  create mode 100644 include/uapi/sound/fcp.h
>  create mode 100644 sound/usb/fcp.c
>  create mode 100644 sound/usb/fcp.h
> 
> -- 
> 2.45.0
>