^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2011-2016 Synaptics Incorporated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2011 Unixphere
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/irqdomain.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/rmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "rmi_bus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "rmi_driver.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static int debug_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) module_param(debug_flags, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) MODULE_PARM_DESC(debug_flags, "control debugging information");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) void rmi_dbg(int flags, struct device *dev, const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct va_format vaf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) if (flags & debug_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) vaf.fmt = fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) vaf.va = &args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) dev_printk(KERN_DEBUG, dev, "%pV", &vaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) EXPORT_SYMBOL_GPL(rmi_dbg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * RMI Physical devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * Physical RMI device consists of several functions serving particular
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * purpose. For example F11 is a 2D touch sensor while F01 is a generic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * function present in every RMI device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static void rmi_release_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct rmi_device *rmi_dev = to_rmi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) kfree(rmi_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static const struct device_type rmi_device_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .name = "rmi4_sensor",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .release = rmi_release_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) bool rmi_is_physical_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return dev->type == &rmi_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * rmi_register_transport_device - register a transport device connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * on the RMI bus. Transport drivers provide communication from the devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * on a bus (such as SPI, I2C, and so on) to the RMI4 sensor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * @xport: the transport device to register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) int rmi_register_transport_device(struct rmi_transport_dev *xport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static atomic_t transport_device_count = ATOMIC_INIT(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct rmi_device *rmi_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) rmi_dev = kzalloc(sizeof(struct rmi_device), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (!rmi_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) device_initialize(&rmi_dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) rmi_dev->xport = xport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) rmi_dev->number = atomic_inc_return(&transport_device_count) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) dev_set_name(&rmi_dev->dev, "rmi4-%02d", rmi_dev->number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) rmi_dev->dev.bus = &rmi_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) rmi_dev->dev.type = &rmi_device_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) xport->rmi_dev = rmi_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) error = device_add(&rmi_dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) goto err_put_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) rmi_dbg(RMI_DEBUG_CORE, xport->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) "%s: Registered %s as %s.\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) dev_name(rmi_dev->xport->dev), dev_name(&rmi_dev->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) err_put_device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) put_device(&rmi_dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) EXPORT_SYMBOL_GPL(rmi_register_transport_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * rmi_unregister_transport_device - unregister a transport device connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * @xport: the transport driver to unregister
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) void rmi_unregister_transport_device(struct rmi_transport_dev *xport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct rmi_device *rmi_dev = xport->rmi_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) device_del(&rmi_dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) put_device(&rmi_dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) EXPORT_SYMBOL(rmi_unregister_transport_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /* Function specific stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static void rmi_release_function(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct rmi_function *fn = to_rmi_function(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) kfree(fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static const struct device_type rmi_function_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .name = "rmi4_function",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .release = rmi_release_function,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) bool rmi_is_function_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return dev->type == &rmi_function_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static int rmi_function_match(struct device *dev, struct device_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct rmi_function_handler *handler = to_rmi_function_handler(drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct rmi_function *fn = to_rmi_function(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return fn->fd.function_number == handler->func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static void rmi_function_of_probe(struct rmi_function *fn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) char of_name[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct device_node *node = fn->rmi_dev->xport->dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) snprintf(of_name, sizeof(of_name), "rmi4-f%02x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) fn->fd.function_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) fn->dev.of_node = of_get_child_by_name(node, of_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static inline void rmi_function_of_probe(struct rmi_function *fn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static struct irq_chip rmi_irq_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .name = "rmi4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static int rmi_create_function_irq(struct rmi_function *fn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct rmi_function_handler *handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) int i, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) for (i = 0; i < fn->num_of_irqs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) set_bit(fn->irq_pos + i, fn->irq_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) fn->irq[i] = irq_create_mapping(drvdata->irqdomain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) fn->irq_pos + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) irq_set_chip_data(fn->irq[i], fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) irq_set_chip_and_handler(fn->irq[i], &rmi_irq_chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) handle_simple_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) irq_set_nested_thread(fn->irq[i], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) error = devm_request_threaded_irq(&fn->dev, fn->irq[i], NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) handler->attention, IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) dev_name(&fn->dev), fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) dev_err(&fn->dev, "Error %d registering IRQ\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static int rmi_function_probe(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct rmi_function *fn = to_rmi_function(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct rmi_function_handler *handler =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) to_rmi_function_handler(dev->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) rmi_function_of_probe(fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (handler->probe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) error = handler->probe(fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (fn->num_of_irqs && handler->attention) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) error = rmi_create_function_irq(fn, handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int rmi_function_remove(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct rmi_function *fn = to_rmi_function(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct rmi_function_handler *handler =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) to_rmi_function_handler(dev->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (handler->remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) handler->remove(fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) int rmi_register_function(struct rmi_function *fn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct rmi_device *rmi_dev = fn->rmi_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) device_initialize(&fn->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) dev_set_name(&fn->dev, "%s.fn%02x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) dev_name(&rmi_dev->dev), fn->fd.function_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) fn->dev.parent = &rmi_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) fn->dev.type = &rmi_function_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) fn->dev.bus = &rmi_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) error = device_add(&fn->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) dev_err(&rmi_dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) "Failed device_register function device %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) dev_name(&fn->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) goto err_put_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, "Registered F%02X.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) fn->fd.function_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) err_put_device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) put_device(&fn->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) void rmi_unregister_function(struct rmi_function *fn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) rmi_dbg(RMI_DEBUG_CORE, &fn->dev, "Unregistering F%02X.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) fn->fd.function_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) device_del(&fn->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) of_node_put(fn->dev.of_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) put_device(&fn->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) for (i = 0; i < fn->num_of_irqs; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) irq_dispose_mapping(fn->irq[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * rmi_register_function_handler - register a handler for an RMI function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * @handler: RMI handler that should be registered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * @module: pointer to module that implements the handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * @mod_name: name of the module implementing the handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * This function performs additional setup of RMI function handler and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * registers it with the RMI core so that it can be bound to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) * RMI function devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) int __rmi_register_function_handler(struct rmi_function_handler *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct module *owner,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) const char *mod_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) struct device_driver *driver = &handler->driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) driver->bus = &rmi_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) driver->owner = owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) driver->mod_name = mod_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) driver->probe = rmi_function_probe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) driver->remove = rmi_function_remove;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) error = driver_register(driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) pr_err("driver_register() failed for %s, error: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) driver->name, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) EXPORT_SYMBOL_GPL(__rmi_register_function_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * rmi_unregister_function_handler - unregister given RMI function handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * @handler: RMI handler that should be unregistered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * This function unregisters given function handler from RMI core which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * causes it to be unbound from the function devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) void rmi_unregister_function_handler(struct rmi_function_handler *handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) driver_unregister(&handler->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) EXPORT_SYMBOL_GPL(rmi_unregister_function_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) /* Bus specific stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static int rmi_bus_match(struct device *dev, struct device_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) bool physical = rmi_is_physical_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /* First see if types are not compatible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (physical != rmi_is_physical_driver(drv))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) return physical || rmi_function_match(dev, drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct bus_type rmi_bus_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) .match = rmi_bus_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) .name = "rmi4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) static struct rmi_function_handler *fn_handlers[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) &rmi_f01_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) #ifdef CONFIG_RMI4_F03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) &rmi_f03_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) #ifdef CONFIG_RMI4_F11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) &rmi_f11_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) #ifdef CONFIG_RMI4_F12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) &rmi_f12_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) #ifdef CONFIG_RMI4_F30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) &rmi_f30_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) #ifdef CONFIG_RMI4_F34
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) &rmi_f34_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) #ifdef CONFIG_RMI4_F3A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) &rmi_f3a_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) #ifdef CONFIG_RMI4_F54
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) &rmi_f54_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) #ifdef CONFIG_RMI4_F55
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) &rmi_f55_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static void __rmi_unregister_function_handlers(int start_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) for (i = start_idx; i >= 0; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) rmi_unregister_function_handler(fn_handlers[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) static void rmi_unregister_function_handlers(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) __rmi_unregister_function_handlers(ARRAY_SIZE(fn_handlers) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) static int rmi_register_function_handlers(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) for (i = 0; i < ARRAY_SIZE(fn_handlers); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ret = rmi_register_function_handler(fn_handlers[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) pr_err("%s: error registering the RMI F%02x handler: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) __func__, fn_handlers[i]->func, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) goto err_unregister_function_handlers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) err_unregister_function_handlers:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) __rmi_unregister_function_handlers(i - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) int rmi_of_property_read_u32(struct device *dev, u32 *result,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) const char *prop, bool optional)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) u32 val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) retval = of_property_read_u32(dev->of_node, prop, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (retval && (!optional && retval == -EINVAL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) dev_err(dev, "Failed to get %s value: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) prop, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) *result = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) EXPORT_SYMBOL_GPL(rmi_of_property_read_u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) static int __init rmi_bus_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) error = bus_register(&rmi_bus_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) pr_err("%s: error registering the RMI bus: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) __func__, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) error = rmi_register_function_handlers();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) goto err_unregister_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) error = rmi_register_physical_driver();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) pr_err("%s: error registering the RMI physical driver: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) __func__, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) goto err_unregister_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) err_unregister_bus:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) bus_unregister(&rmi_bus_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) module_init(rmi_bus_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) static void __exit rmi_bus_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * We should only ever get here if all drivers are unloaded, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * all we have to do at this point is unregister ourselves.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) rmi_unregister_physical_driver();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) rmi_unregister_function_handlers();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) bus_unregister(&rmi_bus_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) module_exit(rmi_bus_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) MODULE_AUTHOR("Christopher Heiny <cheiny@synaptics.com");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) MODULE_DESCRIPTION("RMI bus");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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