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gpio updates for v5.16

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- new driver: gpio-modepin (plus relevant change in zynqmp firmware)
 - add interrupt support to gpio-virtio
 - enable the 'gpio-line-names' property in the DT bindings for gpio-rockchip
 - use the subsystem helpers where applicable in gpio-uniphier instead of
   accessing IRQ structures directly
 - code shrink in gpio-xilinx
 - add interrupt to gpio-mlxbf2 (and include the removal of custom interrupt
   code from the mellanox ethernet driver)
 - support multiple interrupts per bank in gpio-tegra186 (and force one interrupt
   per bank in older models)
 - fix GPIO line IRQ offset calculation in gpio-realtek-otto
 - drop unneeded MODULE_ALIAS expansions in multiple drivers
 - code cleanup in gpio-aggregator
 - minor improvements in gpio-max730x and gpio-mc33880
 - Kconfig cleanups
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Merge tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have a single new driver, new features in others and some cleanups
  all over the place.

  Nothing really stands out and it is all relatively small.

   - new driver: gpio-modepin (plus relevant change in zynqmp firmware)

   - add interrupt support to gpio-virtio

   - enable the 'gpio-line-names' property in the DT bindings for
     gpio-rockchip

   - use the subsystem helpers where applicable in gpio-uniphier instead
     of accessing IRQ structures directly

   - code shrink in gpio-xilinx

   - add interrupt to gpio-mlxbf2 (and include the removal of custom
     interrupt code from the mellanox ethernet driver)

   - support multiple interrupts per bank in gpio-tegra186 (and force
     one interrupt per bank in older models)

   - fix GPIO line IRQ offset calculation in gpio-realtek-otto

   - drop unneeded MODULE_ALIAS expansions in multiple drivers

   - code cleanup in gpio-aggregator

   - minor improvements in gpio-max730x and gpio-mc33880

   - Kconfig cleanups"

* tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  virtio_gpio: drop packed attribute
  gpio: virtio: Add IRQ support
  gpio: realtek-otto: fix GPIO line IRQ offset
  gpio: clean up Kconfig file
  net: mellanox: mlxbf_gige: Replace non-standard interrupt handling
  gpio: mlxbf2: Introduce IRQ support
  gpio: mc33880: Drop if with an always false condition
  gpio: max730x: Make __max730x_remove() return void
  gpio: aggregator: Wrap access to gpiochip_fwd.tmp[]
  gpio: modepin: Add driver support for modepin GPIO controller
  dt-bindings: gpio: zynqmp: Add binding documentation for modepin
  firmware: zynqmp: Add MMIO read and write support for PS_MODE pin
  gpio: tps65218: drop unneeded MODULE_ALIAS
  gpio: max77620: drop unneeded MODULE_ALIAS
  gpio: xilinx: simplify getting .driver_data
  gpio: tegra186: Support multiple interrupts per bank
  gpio: tegra186: Force one interrupt per bank
  gpio: uniphier: Use helper functions to get private data from IRQ data
  gpio: uniphier: Use helper function to get IRQ hardware number
  dt-bindings: gpio: add gpio-line-names to rockchip,gpio-bank.yaml
This commit is contained in:
Linus Torvalds 2021-11-08 11:55:21 -08:00
commit d20f7a09e5
26 changed files with 943 additions and 351 deletions
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27
include/uapi/linux/virtio_gpio.h
View file

@ -5,12 +5,16 @@
#include <linux/types.h>
/* Virtio GPIO Feature bits */
#define VIRTIO_GPIO_F_IRQ 0
/* Virtio GPIO request types */
#define VIRTIO_GPIO_MSG_GET_NAMES 0x0001
#define VIRTIO_GPIO_MSG_GET_DIRECTION 0x0002
#define VIRTIO_GPIO_MSG_SET_DIRECTION 0x0003
#define VIRTIO_GPIO_MSG_GET_VALUE 0x0004
#define VIRTIO_GPIO_MSG_SET_VALUE 0x0005
#define VIRTIO_GPIO_MSG_IRQ_TYPE 0x0006
/* Possible values of the status field */
#define VIRTIO_GPIO_STATUS_OK 0x0
@ -21,11 +25,19 @@
#define VIRTIO_GPIO_DIRECTION_OUT 0x01
#define VIRTIO_GPIO_DIRECTION_IN 0x02
/* Virtio GPIO IRQ types */
#define VIRTIO_GPIO_IRQ_TYPE_NONE 0x00
#define VIRTIO_GPIO_IRQ_TYPE_EDGE_RISING 0x01
#define VIRTIO_GPIO_IRQ_TYPE_EDGE_FALLING 0x02
#define VIRTIO_GPIO_IRQ_TYPE_EDGE_BOTH 0x03
#define VIRTIO_GPIO_IRQ_TYPE_LEVEL_HIGH 0x04
#define VIRTIO_GPIO_IRQ_TYPE_LEVEL_LOW 0x08
struct virtio_gpio_config {
__le16 ngpio;
__u8 padding[2];
__le32 gpio_names_size;
} __packed;
};
/* Virtio GPIO Request / Response */
struct virtio_gpio_request {
@ -44,4 +56,17 @@ struct virtio_gpio_response_get_names {
__u8 value[];
};
/* Virtio GPIO IRQ Request / Response */
struct virtio_gpio_irq_request {
__le16 gpio;
};
struct virtio_gpio_irq_response {
__u8 status;
};
/* Possible values of the interrupt status field */
#define VIRTIO_GPIO_IRQ_STATUS_INVALID 0x0
#define VIRTIO_GPIO_IRQ_STATUS_VALID 0x1
#endif /* _LINUX_VIRTIO_GPIO_H */