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| author | Fabrice Gasnier <fabrice.gasnier@foss.st.com> | 2022-07-13 15:08:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-27 15:39:11 +0300 |
| commit | 72849d4fcee7cc9e6b98637738b722f78502525d (patch) | |
| tree | f106897bac28b0b2ebed4e0f1a78b5386810abe8 /drivers/usb/typec/ucsi/Kconfig | |
| parent | b60fd9361b6e0041299e9e677603dd1df7c9677b (diff) | |
| download | linux-72849d4fcee7cc9e6b98637738b722f78502525d.tar.xz | |
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 <heikki.krogerus@linux.intel.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20220713120842.560902-3-fabrice.gasnier@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/typec/ucsi/Kconfig')
| -rw-r--r-- | drivers/usb/typec/ucsi/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/typec/ucsi/Kconfig b/drivers/usb/typec/ucsi/Kconfig index 5e9b37b3f25e..8f9c4b9f31f7 100644 --- a/drivers/usb/typec/ucsi/Kconfig +++ b/drivers/usb/typec/ucsi/Kconfig @@ -48,4 +48,14 @@ config UCSI_ACPI To compile the driver as a module, choose M here: the module will be called ucsi_acpi +config UCSI_STM32G0 + tristate "UCSI Interface Driver for STM32G0" + depends on I2C + help + This driver enables UCSI support on platforms that expose a STM32G0 + Type-C controller over I2C interface. + + To compile the driver as a module, choose M here: the module will be + called ucsi_stm32g0. + endif |