This is the bulk of GPIO changes for the v4.13 series:

Core:
- Export add/remove for lookup tables so that modules can export GPIO
  descriptor tables.
- Handle GPIO sleep states: it is now possible to flag that a GPIO line
  may loose its state during suspend/resume of the system to save
  power. This is used in the Wolfson Micro Arizona driver.
- ACPI-based GPIO was tightened up a lot around the edges.
- Use bitmap_fill() to speed up a loop.

New drivers:
- Exar XRA1403 SPI-based GPIO.
- MVEBU driver now supports Armada 7K and 8K.
- LP87565 PMIC GPIO.
- Renesas R-CAR R8A7743 (RZ/G1M).
- The new IOT2040 8250 serial/GPIO also comes in through this
  changeset.

Substantial driver changes:
- Seriously fix the Exar 8250 GPIO portions to work.
- The MCP23S08 was moved out to a pin control driver.
- Convert MEVEBU to use regmap for register access.
- Drop Vulcan support from the Broadcom driver.
- Serious cleanup and improvement of the mockup driver, giving us a
  better test coverage.

Misc:
- Lots of janitorial clean up.
- A bunch of documentation fixes.
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serial: exar: Add support for IOT2040 device

This implements the setup of RS232 and the switch-over to RS485 or RS422
for the Siemens IOT2040. That uses an EXAR XR17V352 with external logic
to switch between the different modes. The external logic is controlled
via MPIO pins of the EXAR controller.

Only pin 10 can be exported as GPIO on the IOT2040. It is connected to
an LED.

As the XR17V352 used on the IOT2040 is not equipped with an external
EEPROM, it cannot present itself as IOT2040-variant via subvendor/
subdevice IDs. Thus, we have to check via DMI for the target platform.

Co-developed with Sascha Weisenberger.

Signed-off-by: Sascha Weisenberger <sascha.weisenberger@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed