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[v1,0/9] Add Nuvoton NCT6694 MFD devices

Message ID 20241024085922.133071-1-tmyu0@nuvoton.com (mailing list archive)
Headers show
Series Add Nuvoton NCT6694 MFD devices | expand

Message

Ming Yu Oct. 24, 2024, 8:59 a.m. UTC 
This patch series introduces support for Nuvoton NCT6694, a peripheral
expander based on USB interface. It models the chip as an MFD driver
(1/9), GPIO driver(2/9), I2C Adapter driver(3/9), CANfd driver(4/9),
WDT driver(5/9), HWMON driver(6/9), IIO driver(7/9), PWM driver(8/9),
and RTC driver(9/9).

The MFD driver implements USB device functionality to issue
custom-define USB bulk pipe packets for NCT6694. Each child device can
use the USB functions nct6694_read_msg() and nct6694_write_msg() to issue
a command. They can also register a handler function that will be called
when the USB device receives its interrupt pipe.

The following introduces the custom-define USB transactions:
	nct6694_read_msg - Send bulk-out pipe to write request packet
			   Receive bulk-in pipe to read response packet
			   Receive bulk-in pipe to read data packet

	nct6694_write_msg - Send bulk-out pipe to write request packet
			    Send bulk-out pipe to write data packet
                            Receive bulk-in pipe to read response packet
                            Receive bulk-in pipe to read data packet

Ming Yu (9):
  mfd: Add core driver for Nuvoton NCT6694
  gpio: Add Nuvoton NCT6694 GPIO support
  i2c: Add Nuvoton NCT6694 I2C support
  can: Add Nuvoton NCT6694 CAN support
  watchdog: Add Nuvoton NCT6694 WDT support
  hwmon: Add Nuvoton NCT6694 HWMON support
  iio: adc: Add Nuvoton NCT6694 IIO support
  pwm: Add Nuvoton NCT6694 PWM support
  rtc: Add Nuvoton NCT6694 RTC support

 MAINTAINERS                      |  15 +
 drivers/gpio/Kconfig             |  12 +
 drivers/gpio/Makefile            |   1 +
 drivers/gpio/gpio-nct6694.c      | 489 ++++++++++++++++++
 drivers/hwmon/Kconfig            |  10 +
 drivers/hwmon/Makefile           |   1 +
 drivers/hwmon/nct6694-hwmon.c    | 407 +++++++++++++++
 drivers/i2c/busses/Kconfig       |  10 +
 drivers/i2c/busses/Makefile      |   1 +
 drivers/i2c/busses/i2c-nct6694.c | 166 ++++++
 drivers/iio/adc/Kconfig          |  10 +
 drivers/iio/adc/Makefile         |   1 +
 drivers/iio/adc/nct6694_adc.c    | 616 ++++++++++++++++++++++
 drivers/mfd/Kconfig              |  10 +
 drivers/mfd/Makefile             |   2 +
 drivers/mfd/nct6694.c            | 394 +++++++++++++++
 drivers/net/can/Kconfig          |  10 +
 drivers/net/can/Makefile         |   1 +
 drivers/net/can/nct6694_canfd.c  | 843 +++++++++++++++++++++++++++++++
 drivers/pwm/Kconfig              |  10 +
 drivers/pwm/Makefile             |   1 +
 drivers/pwm/pwm-nct6694.c        | 245 +++++++++
 drivers/rtc/Kconfig              |  10 +
 drivers/rtc/Makefile             |   1 +
 drivers/rtc/rtc-nct6694.c        | 276 ++++++++++
 drivers/watchdog/Kconfig         |  11 +
 drivers/watchdog/Makefile        |   1 +
 drivers/watchdog/nct6694_wdt.c   | 329 ++++++++++++
 include/linux/mfd/nct6694.h      | 168 ++++++
 29 files changed, 4051 insertions(+)
 create mode 100644 drivers/gpio/gpio-nct6694.c
 create mode 100644 drivers/hwmon/nct6694-hwmon.c
 create mode 100644 drivers/i2c/busses/i2c-nct6694.c
 create mode 100644 drivers/iio/adc/nct6694_adc.c
 create mode 100644 drivers/mfd/nct6694.c
 create mode 100644 drivers/net/can/nct6694_canfd.c
 create mode 100644 drivers/pwm/pwm-nct6694.c
 create mode 100644 drivers/rtc/rtc-nct6694.c
 create mode 100644 drivers/watchdog/nct6694_wdt.c
 create mode 100644 include/linux/mfd/nct6694.h

Comments

Marc Kleine-Budde Oct. 24, 2024, 11:57 a.m. UTC | #1 
On 24.10.2024 16:59:13, Ming Yu wrote:
> This patch series introduces support for Nuvoton NCT6694, a peripheral
> expander based on USB interface. It models the chip as an MFD driver
> (1/9), GPIO driver(2/9), I2C Adapter driver(3/9), CANfd driver(4/9),
> WDT driver(5/9), HWMON driver(6/9), IIO driver(7/9), PWM driver(8/9),
> and RTC driver(9/9).
> 
> The MFD driver implements USB device functionality to issue
> custom-define USB bulk pipe packets for NCT6694. Each child device can
> use the USB functions nct6694_read_msg() and nct6694_write_msg() to issue
> a command. They can also register a handler function that will be called
> when the USB device receives its interrupt pipe.

What about implementing a proper IRQ demux handler instead?

Marc