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| author | Fabrice Gasnier <[email protected]> | 2022-07-13 14:08:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2022-07-27 14:39:11 +0200 |
| commit | 72849d4fcee7cc9e6b98637738b722f78502525d (patch) | |
| tree | f106897bac28b0b2ebed4e0f1a78b5386810abe8 /net/unix/af_unix.c | |
| parent | b60fd9361b6e0041299e9e677603dd1df7c9677b (diff) | |
usb: typec: ucsi: stm32g0: add support for stm32g0 controller
STM32G0 provides an integrated USB Type-C and power delivery interface.
It can be programmed with a firmware to handle UCSI protocol over I2C
interface. A GPIO is used as an interrupt line.
Type-C connector can be used as a wakeup source (typically to detect
changes on the port, like attach or detach). PM suspend / resume routines
are used to enable wake irqs, and signal a wakeup event in case the IRQ
has fired while in suspend. The i2c core is doing the necessary
initialization when the "wakeup-source" flag is provided.
Note: the interrupt handler shouldn't be called before the i2c bus resumes.
So, the interrupts are disabled during suspend period, and re-enabled
upon resume, to avoid i2c transfer while suspended, from the irq handler.
Acked-by: Heikki Krogerus <[email protected]>
Signed-off-by: Fabrice Gasnier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions