Signed-off-by: Jaap Aarts <jaap.aarts1@xxxxxxxxxxx> --- drivers/hwmon/Kconfig | 6 ++ drivers/hwmon/Makefile | 1 + drivers/hwmon/asetek_gen6.c | 186 ++++++++++++++++++++++++++++++++++++ 3 files changed, 193 insertions(+) create mode 100644 drivers/hwmon/asetek_gen6.c diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 288ae9f63588..521a9e0c88ca 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -378,6 +378,12 @@ config SENSORS_ARM_SCPI and power sensors available on ARM Ltd's SCP based platforms. The actual number and type of sensors exported depend on the platform. +config SENSORS_ASETEK_GEN6 + tristate "Asetek generation 6 driver" + help + If you say yes here you get support for asetek generation 6 boards + found on most AIO liquid coolers with an asetek pump. + config SENSORS_ASB100 tristate "Asus ASB100 Bach" depends on X86 && I2C diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 3e32c21f5efe..9683d2aae2b2 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_SENSORS_W83793) += w83793.o obj-$(CONFIG_SENSORS_W83795) += w83795.o obj-$(CONFIG_SENSORS_W83781D) += w83781d.o obj-$(CONFIG_SENSORS_W83791D) += w83791d.o +obj-$(CONFIG_SENSORS_ASETEK_GEN6) += asetek_gen6.o obj-$(CONFIG_SENSORS_AB8500) += abx500.o ab8500.o obj-$(CONFIG_SENSORS_ABITUGURU) += abituguru.o diff --git a/drivers/hwmon/asetek_gen6.c b/drivers/hwmon/asetek_gen6.c new file mode 100644 index 000000000000..4d530a4cb71d --- /dev/null +++ b/drivers/hwmon/asetek_gen6.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * A hwmon driver for most asetek gen 6 all-in-one liquid coolers. + * Copyright (c) Jaap Aarts 2020 + * + * Protocol reverse engineered by audiohacked + * https://github.com/audiohacked/OpenCorsairLink + */ + +/* + * Supports following chips: + * driver h100i platinum + * + * Other products should work with this driver but no testing has been done. + * + * Note: platinum is the codename name for pro within driver + * + * Note: fan curve controll has not been implemented + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/usb.h> +#include <linux/slab.h> +#include <linux/mutex.h> +#include <linux/errno.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> + +struct driver { + struct usb_device *udev; + + char *bulk_out_buffer; + char *bulk_in_buffer; + size_t bulk_out_size; + size_t bulk_in_size; + char bulk_in_endpointAddr; + char bulk_out_endpointAddr; + + struct usb_interface *interface; /* the interface for this device */ + struct mutex io_mutex; /* synchronize I/O with disconnect */ + struct semaphore + limit_sem; /* limiting the number of writes in progress */ + + struct kref kref; +}; + +/* devices that work with this driver */ +static const struct usb_device_id astk_table[] = { + { USB_DEVICE(0x1b1c, 0x0c15) }, + {} /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, astk_table); + +int init_device(struct usb_device *udev) +{ + int retval; + retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x40, + 0xffff, 0x0000, 0, 0, 0); + //this always returns error + if (retval != 0) + ; + + retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x02, 0x40, + 0x0002, 0x0000, 0, 0, 0); + if (retval != 0) + return retval; + + return 0; +} +int deinit_device(struct usb_device *udev) +{ + int retval; + retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x02, 0x40, + 0x0004, 0x0000, 0, 0, 0); + if (retval != 0) + return retval; + + return 0; +} + +static void astk_delete(struct kref *kref) +{ + struct driver *dev = container_of(kref, struct driver, kref); + + usb_put_intf(dev->interface); + usb_put_dev(dev->udev); + kfree(dev->bulk_in_buffer); + kfree(dev->bulk_out_buffer); + kfree(dev); +} + +static int astk_probe(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct driver *dev; + int retval = 0; + struct usb_endpoint_descriptor *bulk_in, *bulk_out; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + retval = -ENOMEM; + goto exit; + } + + retval = usb_find_common_endpoints(interface->cur_altsetting, &bulk_in, + &bulk_out, NULL, NULL); + if (retval != 0) + goto exit; + + dev->udev = usb_get_dev(interface_to_usbdev(interface)); + dev->interface = usb_get_intf(interface); + + /* set up the endpoint information */ + /* use only the first bulk-in and bulk-out endpoints */ + dev->bulk_in_size = usb_endpoint_maxp(bulk_in); + dev->bulk_in_buffer = kmalloc(dev->bulk_in_size, GFP_KERNEL); + dev->bulk_in_endpointAddr = bulk_in->bEndpointAddress; + dev->bulk_out_size = usb_endpoint_maxp(bulk_out); + dev->bulk_out_buffer = kmalloc(dev->bulk_out_size, GFP_KERNEL); + dev->bulk_out_endpointAddr = bulk_out->bEndpointAddress; + + //hwmon_init(dev); + retval = init_device(dev->udev); + if (retval) { + dev_err(&interface->dev, "Failled initialising this device.\n"); + goto exit; + } + + usb_set_intfdata(interface, dev); + kref_init(&dev->kref); + mutex_init(&dev->io_mutex); + sema_init(&dev->limit_sem, 8); +exit: + return retval; +} + +static void astk_disconnect(struct usb_interface *interface) +{ + struct driver *dev = usb_get_intfdata(interface); + //hwmon_deinit(dev); + usb_set_intfdata(interface, NULL); + kref_put(&dev->kref, astk_delete); + deinit_device(dev->udev); + /* let the user know what node this device is now attached to */ +} +static int astk_resume(struct usb_interface *intf) +{ + return 0; +} + +static int astk_suspend(struct usb_interface *intf, pm_message_t message) +{ + return 0; +} + +static struct usb_driver astk_driver = { + .name = "Asetek gen6 driver", + .id_table = astk_table, + .probe = astk_probe, + .disconnect = astk_disconnect, + .resume = astk_resume, + .suspend = astk_suspend, + .supports_autosuspend = 1, +}; + +static int __init astk_init(void) +{ + int ret = -1; + ret = usb_register(&astk_driver); + + return ret; +} + +static void __exit astk_exit(void) +{ + usb_deregister(&astk_driver); +} + +module_init(astk_init); +module_exit(astk_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jaap Aarts <jaap.aarts1@xxxxxxxxx>"); +MODULE_DESCRIPTION("Asetek gen6 driver"); -- 2.27.0
