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Input: synaptics-rmi4 - convert irq distribution to irq_domain
Convert the RMI driver to use the standard mechanism for distributing IRQs to the various functions. Tested on: * S7300 (F11, F34, F54) * S7817 (F12, F34, F54) Signed-off-by: Nick Dyer <nick@shmanahar.org> Acked-by: Christopher Heiny <cheiny@synaptics.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Nick Dyer
Dmitry Torokhov
parent
8f6a652a8c
commit
24d28e4f12
@ -3,6 +3,7 @@
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#
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config RMI4_CORE
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tristate "Synaptics RMI4 bus support"
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select IRQ_DOMAIN
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help
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Say Y here if you want to support the Synaptics RMI4 bus. This is
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required for all RMI4 device support.
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@ -9,6 +9,8 @@
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/irq.h>
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#include <linux/irqdomain.h>
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#include <linux/list.h>
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#include <linux/pm.h>
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#include <linux/rmi.h>
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@ -167,6 +169,39 @@ static inline void rmi_function_of_probe(struct rmi_function *fn)
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{}
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#endif
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static struct irq_chip rmi_irq_chip = {
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.name = "rmi4",
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};
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static int rmi_create_function_irq(struct rmi_function *fn,
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struct rmi_function_handler *handler)
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{
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struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev);
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int i, error;
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for (i = 0; i < fn->num_of_irqs; i++) {
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set_bit(fn->irq_pos + i, fn->irq_mask);
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fn->irq[i] = irq_create_mapping(drvdata->irqdomain,
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fn->irq_pos + i);
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irq_set_chip_data(fn->irq[i], fn);
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irq_set_chip_and_handler(fn->irq[i], &rmi_irq_chip,
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handle_simple_irq);
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irq_set_nested_thread(fn->irq[i], 1);
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error = devm_request_threaded_irq(&fn->dev, fn->irq[i], NULL,
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handler->attention, IRQF_ONESHOT,
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dev_name(&fn->dev), fn);
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if (error) {
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dev_err(&fn->dev, "Error %d registering IRQ\n", error);
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return error;
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}
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}
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return 0;
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}
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static int rmi_function_probe(struct device *dev)
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{
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struct rmi_function *fn = to_rmi_function(dev);
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@ -178,7 +213,14 @@ static int rmi_function_probe(struct device *dev)
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if (handler->probe) {
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error = handler->probe(fn);
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return error;
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if (error)
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return error;
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}
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if (fn->num_of_irqs && handler->attention) {
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error = rmi_create_function_irq(fn, handler);
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if (error)
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return error;
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}
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return 0;
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@ -230,12 +272,18 @@ err_put_device:
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void rmi_unregister_function(struct rmi_function *fn)
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{
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int i;
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rmi_dbg(RMI_DEBUG_CORE, &fn->dev, "Unregistering F%02X.\n",
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fn->fd.function_number);
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device_del(&fn->dev);
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of_node_put(fn->dev.of_node);
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put_device(&fn->dev);
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for (i = 0; i < fn->num_of_irqs; i++)
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irq_dispose_mapping(fn->irq[i]);
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}
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/**
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@ -14,6 +14,12 @@
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struct rmi_device;
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/*
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* The interrupt source count in the function descriptor can represent up to
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* 6 interrupt sources in the normal manner.
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*/
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#define RMI_FN_MAX_IRQS 6
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/**
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* struct rmi_function - represents the implementation of an RMI4
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* function for a particular device (basically, a driver for that RMI4 function)
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@ -26,6 +32,7 @@ struct rmi_device;
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* @irq_pos: The position in the irq bitfield this function holds
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* @irq_mask: For convenience, can be used to mask IRQ bits off during ATTN
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* interrupt handling.
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* @irqs: assigned virq numbers (up to num_of_irqs)
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*
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* @node: entry in device's list of functions
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*/
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@ -36,6 +43,7 @@ struct rmi_function {
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struct list_head node;
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unsigned int num_of_irqs;
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int irq[RMI_FN_MAX_IRQS];
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unsigned int irq_pos;
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unsigned long irq_mask[];
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};
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@ -76,7 +84,7 @@ struct rmi_function_handler {
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void (*remove)(struct rmi_function *fn);
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int (*config)(struct rmi_function *fn);
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int (*reset)(struct rmi_function *fn);
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int (*attention)(struct rmi_function *fn, unsigned long *irq_bits);
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irqreturn_t (*attention)(int irq, void *ctx);
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int (*suspend)(struct rmi_function *fn);
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int (*resume)(struct rmi_function *fn);
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};
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@ -21,6 +21,7 @@
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#include <linux/pm.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/irqdomain.h>
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#include <uapi/linux/input.h>
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#include <linux/rmi.h>
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#include "rmi_bus.h"
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@ -127,28 +128,11 @@ static int rmi_driver_process_config_requests(struct rmi_device *rmi_dev)
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return 0;
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}
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static void process_one_interrupt(struct rmi_driver_data *data,
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struct rmi_function *fn)
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{
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struct rmi_function_handler *fh;
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if (!fn || !fn->dev.driver)
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return;
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fh = to_rmi_function_handler(fn->dev.driver);
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if (fh->attention) {
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bitmap_and(data->fn_irq_bits, data->irq_status, fn->irq_mask,
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data->irq_count);
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if (!bitmap_empty(data->fn_irq_bits, data->irq_count))
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fh->attention(fn, data->fn_irq_bits);
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}
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}
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static int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
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{
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struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
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struct device *dev = &rmi_dev->dev;
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struct rmi_function *entry;
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int i;
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int error;
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if (!data)
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@ -173,16 +157,8 @@ static int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
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*/
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mutex_unlock(&data->irq_mutex);
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/*
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* It would be nice to be able to use irq_chip to handle these
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* nested IRQs. Unfortunately, most of the current customers for
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* this driver are using older kernels (3.0.x) that don't support
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* the features required for that. Once they've shifted to more
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* recent kernels (say, 3.3 and higher), this should be switched to
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* use irq_chip.
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*/
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list_for_each_entry(entry, &data->function_list, node)
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process_one_interrupt(data, entry);
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for_each_set_bit(i, data->irq_status, data->irq_count)
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handle_nested_irq(irq_find_mapping(data->irqdomain, i));
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if (data->input)
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input_sync(data->input);
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@ -1000,9 +976,13 @@ EXPORT_SYMBOL_GPL(rmi_driver_resume);
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static int rmi_driver_remove(struct device *dev)
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{
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struct rmi_device *rmi_dev = to_rmi_device(dev);
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struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
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rmi_disable_irq(rmi_dev, false);
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irq_domain_remove(data->irqdomain);
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data->irqdomain = NULL;
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rmi_f34_remove_sysfs(rmi_dev);
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rmi_free_function_list(rmi_dev);
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@ -1034,7 +1014,8 @@ int rmi_probe_interrupts(struct rmi_driver_data *data)
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{
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struct rmi_device *rmi_dev = data->rmi_dev;
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struct device *dev = &rmi_dev->dev;
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int irq_count;
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struct fwnode_handle *fwnode = rmi_dev->xport->dev->fwnode;
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int irq_count = 0;
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size_t size;
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int retval;
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@ -1045,7 +1026,6 @@ int rmi_probe_interrupts(struct rmi_driver_data *data)
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* being accessed.
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*/
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rmi_dbg(RMI_DEBUG_CORE, dev, "%s: Counting IRQs.\n", __func__);
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irq_count = 0;
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data->bootloader_mode = false;
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retval = rmi_scan_pdt(rmi_dev, &irq_count, rmi_count_irqs);
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@ -1057,6 +1037,15 @@ int rmi_probe_interrupts(struct rmi_driver_data *data)
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if (data->bootloader_mode)
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dev_warn(dev, "Device in bootloader mode.\n");
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/* Allocate and register a linear revmap irq_domain */
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data->irqdomain = irq_domain_create_linear(fwnode, irq_count,
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&irq_domain_simple_ops,
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data);
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if (!data->irqdomain) {
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dev_err(&rmi_dev->dev, "Failed to create IRQ domain\n");
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return PTR_ERR(data->irqdomain);
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}
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data->irq_count = irq_count;
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data->num_of_irq_regs = (data->irq_count + 7) / 8;
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@ -1079,10 +1068,9 @@ int rmi_init_functions(struct rmi_driver_data *data)
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{
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struct rmi_device *rmi_dev = data->rmi_dev;
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struct device *dev = &rmi_dev->dev;
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int irq_count;
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int irq_count = 0;
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int retval;
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irq_count = 0;
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rmi_dbg(RMI_DEBUG_CORE, dev, "%s: Creating functions.\n", __func__);
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retval = rmi_scan_pdt(rmi_dev, &irq_count, rmi_create_function);
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if (retval < 0) {
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@ -681,9 +681,9 @@ static int rmi_f01_resume(struct rmi_function *fn)
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return 0;
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}
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static int rmi_f01_attention(struct rmi_function *fn,
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unsigned long *irq_bits)
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static irqreturn_t rmi_f01_attention(int irq, void *ctx)
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{
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struct rmi_function *fn = ctx;
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struct rmi_device *rmi_dev = fn->rmi_dev;
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int error;
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u8 device_status;
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@ -692,7 +692,7 @@ static int rmi_f01_attention(struct rmi_function *fn,
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if (error) {
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dev_err(&fn->dev,
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"Failed to read device status: %d.\n", error);
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return error;
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return IRQ_RETVAL(error);
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}
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if (RMI_F01_STATUS_BOOTLOADER(device_status))
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@ -704,11 +704,11 @@ static int rmi_f01_attention(struct rmi_function *fn,
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error = rmi_dev->driver->reset_handler(rmi_dev);
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if (error) {
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dev_err(&fn->dev, "Device reset failed: %d\n", error);
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return error;
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return IRQ_RETVAL(error);
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}
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}
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return 0;
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return IRQ_HANDLED;
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}
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struct rmi_function_handler rmi_f01_handler = {
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@ -244,8 +244,9 @@ static int rmi_f03_config(struct rmi_function *fn)
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return 0;
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}
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static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits)
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static irqreturn_t rmi_f03_attention(int irq, void *ctx)
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{
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struct rmi_function *fn = ctx;
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struct rmi_device *rmi_dev = fn->rmi_dev;
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struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev);
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struct f03_data *f03 = dev_get_drvdata(&fn->dev);
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@ -262,7 +263,7 @@ static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits)
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/* First grab the data passed by the transport device */
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if (drvdata->attn_data.size < ob_len) {
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dev_warn(&fn->dev, "F03 interrupted, but data is missing!\n");
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return 0;
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return IRQ_HANDLED;
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}
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memcpy(obs, drvdata->attn_data.data, ob_len);
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@ -277,7 +278,7 @@ static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits)
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"%s: Failed to read F03 output buffers: %d\n",
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__func__, error);
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serio_interrupt(f03->serio, 0, SERIO_TIMEOUT);
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return error;
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return IRQ_RETVAL(error);
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}
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}
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@ -303,7 +304,7 @@ static int rmi_f03_attention(struct rmi_function *fn, unsigned long *irq_bits)
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serio_interrupt(f03->serio, ob_data, serio_flags);
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}
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return 0;
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return IRQ_HANDLED;
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}
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static void rmi_f03_remove(struct rmi_function *fn)
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@ -570,9 +570,7 @@ static inline u8 rmi_f11_parse_finger_state(const u8 *f_state, u8 n_finger)
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}
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static void rmi_f11_finger_handler(struct f11_data *f11,
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struct rmi_2d_sensor *sensor,
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unsigned long *irq_bits, int num_irq_regs,
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int size)
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struct rmi_2d_sensor *sensor, int size)
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{
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const u8 *f_state = f11->data.f_state;
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u8 finger_state;
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@ -581,12 +579,7 @@ static void rmi_f11_finger_handler(struct f11_data *f11,
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int rel_fingers;
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int abs_size = sensor->nbr_fingers * RMI_F11_ABS_BYTES;
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int abs_bits = bitmap_and(f11->result_bits, irq_bits, f11->abs_mask,
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num_irq_regs * 8);
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int rel_bits = bitmap_and(f11->result_bits, irq_bits, f11->rel_mask,
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num_irq_regs * 8);
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if (abs_bits) {
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if (sensor->report_abs) {
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if (abs_size > size)
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abs_fingers = size / RMI_F11_ABS_BYTES;
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else
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@ -604,19 +597,7 @@ static void rmi_f11_finger_handler(struct f11_data *f11,
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rmi_f11_abs_pos_process(f11, sensor, &sensor->objs[i],
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finger_state, i);
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}
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}
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if (rel_bits) {
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if ((abs_size + sensor->nbr_fingers * RMI_F11_REL_BYTES) > size)
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rel_fingers = (size - abs_size) / RMI_F11_REL_BYTES;
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else
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rel_fingers = sensor->nbr_fingers;
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for (i = 0; i < rel_fingers; i++)
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rmi_f11_rel_pos_report(f11, i);
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}
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if (abs_bits) {
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/*
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* the absolute part is made in 2 parts to allow the kernel
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* tracking to take place.
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@ -638,7 +619,16 @@ static void rmi_f11_finger_handler(struct f11_data *f11,
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}
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input_mt_sync_frame(sensor->input);
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} else if (sensor->report_rel) {
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if ((abs_size + sensor->nbr_fingers * RMI_F11_REL_BYTES) > size)
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rel_fingers = (size - abs_size) / RMI_F11_REL_BYTES;
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else
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rel_fingers = sensor->nbr_fingers;
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for (i = 0; i < rel_fingers; i++)
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rmi_f11_rel_pos_report(f11, i);
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}
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}
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static int f11_2d_construct_data(struct f11_data *f11)
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@ -1275,8 +1265,9 @@ static int rmi_f11_config(struct rmi_function *fn)
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return 0;
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}
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static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits)
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static irqreturn_t rmi_f11_attention(int irq, void *ctx)
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{
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struct rmi_function *fn = ctx;
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struct rmi_device *rmi_dev = fn->rmi_dev;
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struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev);
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struct f11_data *f11 = dev_get_drvdata(&fn->dev);
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@ -1302,13 +1293,12 @@ static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits)
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data_base_addr, f11->sensor.data_pkt,
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f11->sensor.pkt_size);
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if (error < 0)
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return error;
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return IRQ_RETVAL(error);
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}
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rmi_f11_finger_handler(f11, &f11->sensor, irq_bits,
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drvdata->num_of_irq_regs, valid_bytes);
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rmi_f11_finger_handler(f11, &f11->sensor, valid_bytes);
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return 0;
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return IRQ_HANDLED;
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}
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static int rmi_f11_resume(struct rmi_function *fn)
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@ -197,10 +197,10 @@ static void rmi_f12_process_objects(struct f12_data *f12, u8 *data1, int size)
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rmi_2d_sensor_abs_report(sensor, &sensor->objs[i], i);
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}
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static int rmi_f12_attention(struct rmi_function *fn,
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unsigned long *irq_nr_regs)
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static irqreturn_t rmi_f12_attention(int irq, void *ctx)
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{
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int retval;
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struct rmi_function *fn = ctx;
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struct rmi_device *rmi_dev = fn->rmi_dev;
|
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struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev);
|
||||
struct f12_data *f12 = dev_get_drvdata(&fn->dev);
|
||||
@ -222,7 +222,7 @@ static int rmi_f12_attention(struct rmi_function *fn,
|
||||
if (retval < 0) {
|
||||
dev_err(&fn->dev, "Failed to read object data. Code: %d.\n",
|
||||
retval);
|
||||
return retval;
|
||||
return IRQ_RETVAL(retval);
|
||||
}
|
||||
}
|
||||
|
||||
@ -232,7 +232,7 @@ static int rmi_f12_attention(struct rmi_function *fn,
|
||||
|
||||
input_mt_sync_frame(sensor->input);
|
||||
|
||||
return 0;
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int rmi_f12_write_control_regs(struct rmi_function *fn)
|
||||
|
||||
@ -122,8 +122,9 @@ static void rmi_f30_report_button(struct rmi_function *fn,
|
||||
}
|
||||
}
|
||||
|
||||
static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits)
|
||||
static irqreturn_t rmi_f30_attention(int irq, void *ctx)
|
||||
{
|
||||
struct rmi_function *fn = ctx;
|
||||
struct f30_data *f30 = dev_get_drvdata(&fn->dev);
|
||||
struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev);
|
||||
int error;
|
||||
@ -134,7 +135,7 @@ static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits)
|
||||
if (drvdata->attn_data.size < f30->register_count) {
|
||||
dev_warn(&fn->dev,
|
||||
"F30 interrupted, but data is missing\n");
|
||||
return 0;
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
memcpy(f30->data_regs, drvdata->attn_data.data,
|
||||
f30->register_count);
|
||||
@ -147,7 +148,7 @@ static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits)
|
||||
dev_err(&fn->dev,
|
||||
"%s: Failed to read F30 data registers: %d\n",
|
||||
__func__, error);
|
||||
return error;
|
||||
return IRQ_RETVAL(error);
|
||||
}
|
||||
}
|
||||
|
||||
@ -159,7 +160,7 @@ static int rmi_f30_attention(struct rmi_function *fn, unsigned long *irq_bits)
|
||||
rmi_f03_commit_buttons(f30->f03);
|
||||
}
|
||||
|
||||
return 0;
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int rmi_f30_config(struct rmi_function *fn)
|
||||
|
||||
@ -100,8 +100,9 @@ static int rmi_f34_command(struct f34_data *f34, u8 command,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rmi_f34_attention(struct rmi_function *fn, unsigned long *irq_bits)
|
||||
static irqreturn_t rmi_f34_attention(int irq, void *ctx)
|
||||
{
|
||||
struct rmi_function *fn = ctx;
|
||||
struct f34_data *f34 = dev_get_drvdata(&fn->dev);
|
||||
int ret;
|
||||
u8 status;
|
||||
@ -126,7 +127,7 @@ static int rmi_f34_attention(struct rmi_function *fn, unsigned long *irq_bits)
|
||||
complete(&f34->v7.cmd_done);
|
||||
}
|
||||
|
||||
return 0;
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int rmi_f34_write_blocks(struct f34_data *f34, const void *data,
|
||||
|
||||
@ -610,11 +610,6 @@ error:
|
||||
mutex_unlock(&f54->data_mutex);
|
||||
}
|
||||
|
||||
static int rmi_f54_attention(struct rmi_function *fn, unsigned long *irqbits)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rmi_f54_config(struct rmi_function *fn)
|
||||
{
|
||||
struct rmi_driver *drv = fn->rmi_dev->driver;
|
||||
@ -756,6 +751,5 @@ struct rmi_function_handler rmi_f54_handler = {
|
||||
.func = 0x54,
|
||||
.probe = rmi_f54_probe,
|
||||
.config = rmi_f54_config,
|
||||
.attention = rmi_f54_attention,
|
||||
.remove = rmi_f54_remove,
|
||||
};
|
||||
|
||||
@ -354,6 +354,8 @@ struct rmi_driver_data {
|
||||
struct mutex irq_mutex;
|
||||
struct input_dev *input;
|
||||
|
||||
struct irq_domain *irqdomain;
|
||||
|
||||
u8 pdt_props;
|
||||
|
||||
u8 num_rx_electrodes;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user