From: Ming Yu <a0282524688@xxxxxxxxx> This patch series introduces support for Nuvoton NCT6694, a peripheral expander based on USB interface. It models the chip as an MFD driver (1/7), GPIO driver(2/7), I2C Adapter driver(3/7), CANfd driver(4/7), WDT driver(5/7), HWMON driver(6/7), and RTC driver(7/7). 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 request interrupt 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 Changes since version 13: - Update to guard(spinlock_irqsave)() in nct6694.c - Add struct i2c_adapter_quirks in i2c-nct6694.c - Rebased on top of v6.17-rc3 as requested Changes since version 12: - Implement IDA in MFD driver to handle per-device IDs - Use spinlock to replace irq mutex lock - Use same email address in the signature Changes since version 11: - Use platform_device's id to replace IDA - Modify the irq_domain_add_simple() to irq_domain_create_simple() in nct6694.c - Update struct data_bittiming_params related part in nct6694_canfd.c - Fix the typo in the header in nct6694-hwmon.c Changes since version 10: - Add change log for each patch - Fix mfd_cell to MFD_CELL_NAME() in nct6694.c - Implement IDA to allocate id in gpio-nct6694.c, i2c-nct6694.c, nct6694_canfd.c and nct6694_wdt.c - Add header <linux/bitfield.h> in nct6694_canfd.c - Add support to config tdc in nct6694_canfd.c - Add module parameters to configure WDT's timeout and pretimeout value in nct6694_wdt.c Changes since version 9: - Add devm_add_action_or_reset() to dispose irq mapping - Add KernelDoc to exported functions in nct6694.c Changes since version 8: - Modify the signed-off-by with my work address - Rename all MFD cell names to "nct6694-xxx" - Add irq_dispose_mapping() in the error handling path and in the remove function - Fix some comments in nct6694.c and in nct6694.h - Add module parameters to configure I2C's baudrate in i2c-nct6694.c - Rename all function names nct6694_can_xxx to nct6694_canfd_xxx in nct6694_canfd.c - Fix nct6694_canfd_handle_state_change() in nct6694_canfd.c - Fix nct6694_canfd_start() to configure NBTP and DBTP in nct6694_canfd.c - Add can_set_static_ctrlmode() in nct6694_canfd.c Changes since version 7: - Add error handling for devm_mutex_init() - Modify the name of the child devices CAN1 and CAN2 to CAN0 and CAN1. - Fix multiline comments to net-dev style in nct6694_canfd.c Changes since version 6: - Fix nct6694_can_handle_state_change() in nct6694_canfd.c - Fix warnings in nct6694_canfd.c - Move the nct6694_can_priv's bec to the end in nct6694_canfd.c - Fix warning in nct6694_wdt.c - Fix temp_hyst's data type to signed variable in nct6694-hwmon.c Changes since version 5: - Modify the module name and the driver name consistently - Fix mfd_cell to MFD_CELL_NAME() and MFD_CELL_BASIC() - Drop unnecessary macros in nct6694.c - Update private data and drop mutex in nct6694_canfd.c - Fix nct6694_can_handle_state_change() in nct6694_canfd.c Changes since version 4: - Modify arguments in read/write function to a pointer to cmd_header - Modify all callers that call the read/write function - Move the nct6694_canfd.c to drivers/net/can/usb/ - Fix the missing rx offload function in nct6694_canfd.c - Fix warngings in nct6694-hwmon.c Changes since version 3: - Modify array buffer to structure for each drivers - Fix defines and comments for each drivers - Add header <linux/bits.h> and use BIT macro in nct6694.c and gpio-nct6694.c - Modify mutex_init() to devm_mutex_init() - Add rx-offload helper in nct6694_canfd.c - Drop watchdog_init_timeout() in nct6694_wdt.c - Modify the division method to DIV_ROUND_CLOSEST() in nct6694-hwmon.c - Drop private mutex and use rtc core lock in rtc-nct6694.c - Modify device_set_wakeup_capable() to device_init_wakeup() in rtc-nct6694.c Changes since version 2: - Add MODULE_ALIAS() for each child driver - Modify gpio line names be a local variable in gpio-nct6694.c - Drop unnecessary platform_get_drvdata() in gpio-nct6694.c - Rename each command in nct6694_canfd.c - Modify each function name consistently in nct6694_canfd.c - Modify the pretimeout validation procedure in nct6694_wdt.c - Fix warnings in nct6694-hwmon.c Changes since version 1: - Implement IRQ domain to handle IRQ demux in nct6694.c - Modify USB_DEVICE to USB_DEVICE_AND_INTERFACE_INFO API in nct6694.c - Add each driver's command structure - Fix USB functions in nct6694.c - Fix platform driver registration in each child driver - Sort each driver's header files alphabetically - Drop unnecessary header in gpio-nct6694.c - Add gpio line names in gpio-nct6694.c - Fix errors and warnings in nct6694_canfd.c - Fix TX-flow control in nct6694_canfd.c - Fix warnings in nct6694_wdt.c - Drop unnecessary logs in nct6694_wdt.c - Modify start() function to setup device in nct6694_wdt.c - Add voltage sensors functionality in nct6694-hwmon.c - Add temperature sensors functionality in nct6694-hwmon.c - Fix overwrite error return values in nct6694-hwmon.c - Add write value limitation for each write() function in nct6694-hwmon.c - Drop unnecessary logs in rtc-nct6694.c - Fix overwrite error return values in rtc-nct6694.c - Modify to use dev_err_probe API in rtc-nct6694.c Ming Yu (7): mfd: Add core driver for Nuvoton NCT6694 gpio: Add Nuvoton NCT6694 GPIO support i2c: Add Nuvoton NCT6694 I2C support can: Add Nuvoton NCT6694 CANFD support watchdog: Add Nuvoton NCT6694 WDT support hwmon: Add Nuvoton NCT6694 HWMON support rtc: Add Nuvoton NCT6694 RTC support MAINTAINERS | 12 + drivers/gpio/Kconfig | 12 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-nct6694.c | 499 +++++++++++++++ drivers/hwmon/Kconfig | 10 + drivers/hwmon/Makefile | 1 + drivers/hwmon/nct6694-hwmon.c | 949 ++++++++++++++++++++++++++++ drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-nct6694.c | 196 ++++++ drivers/mfd/Kconfig | 15 + drivers/mfd/Makefile | 2 + drivers/mfd/nct6694.c | 388 ++++++++++++ drivers/net/can/usb/Kconfig | 11 + drivers/net/can/usb/Makefile | 1 + drivers/net/can/usb/nct6694_canfd.c | 832 ++++++++++++++++++++++++ drivers/rtc/Kconfig | 10 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-nct6694.c | 297 +++++++++ drivers/watchdog/Kconfig | 11 + drivers/watchdog/Makefile | 1 + drivers/watchdog/nct6694_wdt.c | 307 +++++++++ include/linux/mfd/nct6694.h | 102 +++ 23 files changed, 3669 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/mfd/nct6694.c create mode 100644 drivers/net/can/usb/nct6694_canfd.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 -- 2.34.1
