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| author | Mark Brown <broonie@kernel.org> | 2024-04-17 03:12:19 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-04-17 03:12:19 +0300 |
| commit | 1f05252a3a95bb898413126d3cd480fed4edab0e (patch) | |
| tree | d19f29a1fed2c3168053e5410304f4b0c191f964 /include/linux/interrupt.h | |
| parent | 351007b069287d3f0399e9e83981b33a2050eb54 (diff) | |
| parent | 439fbc97502ae16f3e54e05d266d103674cc4f06 (diff) | |
| download | linux-1f05252a3a95bb898413126d3cd480fed4edab0e.tar.xz | |
Add bridged amplifiers to cs42l43
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
In some cs42l43 systems a couple of cs35l56 amplifiers are attached
to the cs42l43's SPI and I2S. On Windows the cs42l43 is controlled
by a SDCA class driver and these two amplifiers are controlled by
firmware running on the cs42l43. However, under Linux the decision
was made to interact with the cs42l43 directly, affording the user
greater control over the audio system. However, this has resulted
in an issue where these two bridged cs35l56 amplifiers are not
populated in ACPI and must be added manually. There is at least an
SDCA extension unit DT entry we can key off.
The process of adding this is handled using a software node, firstly the
ability to add native chip selects to software nodes must be added.
Secondly, an additional flag for naming the SPI devices is added this
allows the machine driver to key to the correct amplifier. Then finally,
the cs42l43 SPI driver adds the two amplifiers directly onto its SPI
bus.
An additional series will follow soon to add the audio machine driver
parts (in the sof-sdw driver), however that is fairly orthogonal to
this part of the process, getting the actual amplifiers registered.
Diffstat (limited to 'include/linux/interrupt.h')
| -rw-r--r-- | include/linux/interrupt.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 76121c2bb4f8..5c9bdd3ffccc 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -67,6 +67,8 @@ * later. * IRQF_NO_DEBUG - Exclude from runnaway detection for IPI and similar handlers, * depends on IRQF_PERCPU. + * IRQF_COND_ONESHOT - Agree to do IRQF_ONESHOT if already set for a shared + * interrupt. */ #define IRQF_SHARED 0x00000080 #define IRQF_PROBE_SHARED 0x00000100 @@ -82,6 +84,7 @@ #define IRQF_COND_SUSPEND 0x00040000 #define IRQF_NO_AUTOEN 0x00080000 #define IRQF_NO_DEBUG 0x00100000 +#define IRQF_COND_ONESHOT 0x00200000 #define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND | IRQF_NO_THREAD) |