2016-07-18 15:10:37 -06:00
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/*
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* Copyright (c) 2012-2015 Synaptics Incorporated
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2016-09-15 14:30:43 -06:00
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* Copyright (C) 2016 Zodiac Inflight Innovations
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2016-07-18 15:10:37 -06:00
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/rmi.h>
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#include <linux/input.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/videobuf2-v4l2.h>
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#include <media/videobuf2-vmalloc.h>
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#include "rmi_driver.h"
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#define F54_NAME "rmi4_f54"
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/* F54 data offsets */
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#define F54_REPORT_DATA_OFFSET 3
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#define F54_FIFO_OFFSET 1
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#define F54_NUM_TX_OFFSET 1
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#define F54_NUM_RX_OFFSET 0
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/* F54 commands */
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#define F54_GET_REPORT 1
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#define F54_FORCE_CAL 2
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/* F54 capabilities */
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#define F54_CAP_BASELINE (1 << 2)
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#define F54_CAP_IMAGE8 (1 << 3)
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#define F54_CAP_IMAGE16 (1 << 6)
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/**
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* enum rmi_f54_report_type - RMI4 F54 report types
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*
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* @F54_8BIT_IMAGE: Normalized 8-Bit Image Report. The capacitance variance
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* from baseline for each pixel.
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*
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* @F54_16BIT_IMAGE: Normalized 16-Bit Image Report. The capacitance variance
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* from baseline for each pixel.
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*
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* @F54_RAW_16BIT_IMAGE:
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* Raw 16-Bit Image Report. The raw capacitance for each
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* pixel.
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*
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* @F54_TRUE_BASELINE: True Baseline Report. The baseline capacitance for each
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* pixel.
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*
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* @F54_FULL_RAW_CAP: Full Raw Capacitance Report. The raw capacitance with
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* low reference set to its minimum value and high
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* reference set to its maximum value.
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*
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* @F54_FULL_RAW_CAP_RX_OFFSET_REMOVED:
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* Full Raw Capacitance with Receiver Offset Removed
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* Report. Set Low reference to its minimum value and high
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* references to its maximum value, then report the raw
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* capacitance for each pixel.
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*/
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enum rmi_f54_report_type {
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F54_REPORT_NONE = 0,
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F54_8BIT_IMAGE = 1,
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F54_16BIT_IMAGE = 2,
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F54_RAW_16BIT_IMAGE = 3,
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F54_TRUE_BASELINE = 9,
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F54_FULL_RAW_CAP = 19,
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F54_FULL_RAW_CAP_RX_OFFSET_REMOVED = 20,
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F54_MAX_REPORT_TYPE,
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};
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const char *rmi_f54_report_type_names[] = {
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[F54_REPORT_NONE] = "Unknown",
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[F54_8BIT_IMAGE] = "Normalized 8-Bit Image",
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[F54_16BIT_IMAGE] = "Normalized 16-Bit Image",
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[F54_RAW_16BIT_IMAGE] = "Raw 16-Bit Image",
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[F54_TRUE_BASELINE] = "True Baseline",
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[F54_FULL_RAW_CAP] = "Full Raw Capacitance",
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[F54_FULL_RAW_CAP_RX_OFFSET_REMOVED]
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= "Full Raw Capacitance RX Offset Removed",
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};
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struct rmi_f54_reports {
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int start;
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int size;
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};
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struct f54_data {
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struct rmi_function *fn;
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u8 num_rx_electrodes;
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u8 num_tx_electrodes;
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u8 capabilities;
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u16 clock_rate;
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u8 family;
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enum rmi_f54_report_type report_type;
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u8 *report_data;
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int report_size;
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struct rmi_f54_reports standard_report[2];
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bool is_busy;
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struct mutex status_mutex;
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struct mutex data_mutex;
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struct workqueue_struct *workqueue;
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struct delayed_work work;
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unsigned long timeout;
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struct completion cmd_done;
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/* V4L2 support */
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struct v4l2_device v4l2;
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struct v4l2_pix_format format;
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struct video_device vdev;
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struct vb2_queue queue;
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struct mutex lock;
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int input;
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enum rmi_f54_report_type inputs[F54_MAX_REPORT_TYPE];
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};
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/*
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* Basic checks on report_type to ensure we write a valid type
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* to the sensor.
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*/
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static bool is_f54_report_type_valid(struct f54_data *f54,
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enum rmi_f54_report_type reptype)
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{
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switch (reptype) {
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case F54_8BIT_IMAGE:
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return f54->capabilities & F54_CAP_IMAGE8;
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case F54_16BIT_IMAGE:
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case F54_RAW_16BIT_IMAGE:
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return f54->capabilities & F54_CAP_IMAGE16;
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case F54_TRUE_BASELINE:
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return f54->capabilities & F54_CAP_IMAGE16;
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case F54_FULL_RAW_CAP:
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case F54_FULL_RAW_CAP_RX_OFFSET_REMOVED:
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return true;
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default:
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return false;
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}
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}
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static enum rmi_f54_report_type rmi_f54_get_reptype(struct f54_data *f54,
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unsigned int i)
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{
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if (i >= F54_MAX_REPORT_TYPE)
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return F54_REPORT_NONE;
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return f54->inputs[i];
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}
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static void rmi_f54_create_input_map(struct f54_data *f54)
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{
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int i = 0;
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enum rmi_f54_report_type reptype;
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for (reptype = 1; reptype < F54_MAX_REPORT_TYPE; reptype++) {
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if (!is_f54_report_type_valid(f54, reptype))
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continue;
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f54->inputs[i++] = reptype;
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}
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/* Remaining values are zero via kzalloc */
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}
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static int rmi_f54_request_report(struct rmi_function *fn, u8 report_type)
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{
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struct f54_data *f54 = dev_get_drvdata(&fn->dev);
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struct rmi_device *rmi_dev = fn->rmi_dev;
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int error;
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/* Write Report Type into F54_AD_Data0 */
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if (f54->report_type != report_type) {
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error = rmi_write(rmi_dev, f54->fn->fd.data_base_addr,
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report_type);
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if (error)
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return error;
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f54->report_type = report_type;
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}
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/*
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* Small delay after disabling interrupts to avoid race condition
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* in firmare. This value is a bit higher than absolutely necessary.
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* Should be removed once issue is resolved in firmware.
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*/
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usleep_range(2000, 3000);
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mutex_lock(&f54->data_mutex);
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error = rmi_write(rmi_dev, fn->fd.command_base_addr, F54_GET_REPORT);
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if (error < 0)
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2016-11-16 18:23:22 -07:00
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goto unlock;
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2016-07-18 15:10:37 -06:00
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init_completion(&f54->cmd_done);
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f54->is_busy = 1;
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f54->timeout = jiffies + msecs_to_jiffies(100);
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queue_delayed_work(f54->workqueue, &f54->work, 0);
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2016-11-16 18:23:22 -07:00
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unlock:
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2016-07-18 15:10:37 -06:00
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mutex_unlock(&f54->data_mutex);
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2016-11-16 18:23:22 -07:00
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return error;
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2016-07-18 15:10:37 -06:00
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}
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static size_t rmi_f54_get_report_size(struct f54_data *f54)
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{
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2016-11-22 18:57:02 -07:00
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struct rmi_device *rmi_dev = f54->fn->rmi_dev;
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struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev);
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u8 rx = drv_data->num_rx_electrodes ? : f54->num_rx_electrodes;
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u8 tx = drv_data->num_tx_electrodes ? : f54->num_tx_electrodes;
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2016-07-18 15:10:37 -06:00
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size_t size;
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switch (rmi_f54_get_reptype(f54, f54->input)) {
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case F54_8BIT_IMAGE:
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size = rx * tx;
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break;
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case F54_16BIT_IMAGE:
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case F54_RAW_16BIT_IMAGE:
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case F54_TRUE_BASELINE:
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case F54_FULL_RAW_CAP:
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case F54_FULL_RAW_CAP_RX_OFFSET_REMOVED:
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size = sizeof(u16) * rx * tx;
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break;
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default:
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size = 0;
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}
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return size;
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}
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static int rmi_f54_get_pixel_fmt(enum rmi_f54_report_type reptype, u32 *pixfmt)
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{
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int ret = 0;
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switch (reptype) {
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case F54_8BIT_IMAGE:
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*pixfmt = V4L2_TCH_FMT_DELTA_TD08;
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break;
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case F54_16BIT_IMAGE:
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*pixfmt = V4L2_TCH_FMT_DELTA_TD16;
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break;
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case F54_RAW_16BIT_IMAGE:
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case F54_TRUE_BASELINE:
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case F54_FULL_RAW_CAP:
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case F54_FULL_RAW_CAP_RX_OFFSET_REMOVED:
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*pixfmt = V4L2_TCH_FMT_TU16;
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break;
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case F54_REPORT_NONE:
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case F54_MAX_REPORT_TYPE:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static const struct v4l2_file_operations rmi_f54_video_fops = {
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.owner = THIS_MODULE,
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.open = v4l2_fh_open,
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.release = vb2_fop_release,
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.unlocked_ioctl = video_ioctl2,
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.read = vb2_fop_read,
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.mmap = vb2_fop_mmap,
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.poll = vb2_fop_poll,
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};
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static int rmi_f54_queue_setup(struct vb2_queue *q, unsigned int *nbuffers,
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unsigned int *nplanes, unsigned int sizes[],
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struct device *alloc_devs[])
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{
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struct f54_data *f54 = q->drv_priv;
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if (*nplanes)
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return sizes[0] < rmi_f54_get_report_size(f54) ? -EINVAL : 0;
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*nplanes = 1;
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sizes[0] = rmi_f54_get_report_size(f54);
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return 0;
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}
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static void rmi_f54_buffer_queue(struct vb2_buffer *vb)
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{
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struct f54_data *f54 = vb2_get_drv_priv(vb->vb2_queue);
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u16 *ptr;
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enum vb2_buffer_state state;
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enum rmi_f54_report_type reptype;
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int ret;
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mutex_lock(&f54->status_mutex);
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reptype = rmi_f54_get_reptype(f54, f54->input);
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if (reptype == F54_REPORT_NONE) {
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state = VB2_BUF_STATE_ERROR;
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goto done;
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}
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if (f54->is_busy) {
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state = VB2_BUF_STATE_ERROR;
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goto done;
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}
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ret = rmi_f54_request_report(f54->fn, reptype);
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if (ret) {
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dev_err(&f54->fn->dev, "Error requesting F54 report\n");
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state = VB2_BUF_STATE_ERROR;
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goto done;
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}
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/* get frame data */
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mutex_lock(&f54->data_mutex);
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while (f54->is_busy) {
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mutex_unlock(&f54->data_mutex);
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if (!wait_for_completion_timeout(&f54->cmd_done,
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msecs_to_jiffies(1000))) {
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dev_err(&f54->fn->dev, "Timed out\n");
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state = VB2_BUF_STATE_ERROR;
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goto done;
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}
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mutex_lock(&f54->data_mutex);
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}
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ptr = vb2_plane_vaddr(vb, 0);
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if (!ptr) {
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dev_err(&f54->fn->dev, "Error acquiring frame ptr\n");
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state = VB2_BUF_STATE_ERROR;
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goto data_done;
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}
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memcpy(ptr, f54->report_data, f54->report_size);
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vb2_set_plane_payload(vb, 0, rmi_f54_get_report_size(f54));
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state = VB2_BUF_STATE_DONE;
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data_done:
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mutex_unlock(&f54->data_mutex);
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done:
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vb2_buffer_done(vb, state);
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mutex_unlock(&f54->status_mutex);
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}
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/* V4L2 structures */
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static const struct vb2_ops rmi_f54_queue_ops = {
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.queue_setup = rmi_f54_queue_setup,
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.buf_queue = rmi_f54_buffer_queue,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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};
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static const struct vb2_queue rmi_f54_queue = {
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.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
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|
|
|
.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ,
|
|
|
|
.buf_struct_size = sizeof(struct vb2_buffer),
|
|
|
|
.ops = &rmi_f54_queue_ops,
|
|
|
|
.mem_ops = &vb2_vmalloc_memops,
|
|
|
|
.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC,
|
|
|
|
.min_buffers_needed = 1,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int rmi_f54_vidioc_querycap(struct file *file, void *priv,
|
|
|
|
struct v4l2_capability *cap)
|
|
|
|
{
|
|
|
|
struct f54_data *f54 = video_drvdata(file);
|
|
|
|
|
|
|
|
strlcpy(cap->driver, F54_NAME, sizeof(cap->driver));
|
|
|
|
strlcpy(cap->card, SYNAPTICS_INPUT_DEVICE_NAME, sizeof(cap->card));
|
|
|
|
snprintf(cap->bus_info, sizeof(cap->bus_info),
|
|
|
|
"rmi4:%s", dev_name(&f54->fn->dev));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_vidioc_enum_input(struct file *file, void *priv,
|
|
|
|
struct v4l2_input *i)
|
|
|
|
{
|
|
|
|
struct f54_data *f54 = video_drvdata(file);
|
|
|
|
enum rmi_f54_report_type reptype;
|
|
|
|
|
|
|
|
reptype = rmi_f54_get_reptype(f54, i->index);
|
|
|
|
if (reptype == F54_REPORT_NONE)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
i->type = V4L2_INPUT_TYPE_TOUCH;
|
|
|
|
|
|
|
|
strlcpy(i->name, rmi_f54_report_type_names[reptype], sizeof(i->name));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_set_input(struct f54_data *f54, unsigned int i)
|
|
|
|
{
|
2016-11-22 18:57:02 -07:00
|
|
|
struct rmi_device *rmi_dev = f54->fn->rmi_dev;
|
|
|
|
struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev);
|
|
|
|
u8 rx = drv_data->num_rx_electrodes ? : f54->num_rx_electrodes;
|
|
|
|
u8 tx = drv_data->num_tx_electrodes ? : f54->num_tx_electrodes;
|
2016-07-18 15:10:37 -06:00
|
|
|
struct v4l2_pix_format *f = &f54->format;
|
|
|
|
enum rmi_f54_report_type reptype;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
reptype = rmi_f54_get_reptype(f54, i);
|
|
|
|
if (reptype == F54_REPORT_NONE)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
ret = rmi_f54_get_pixel_fmt(reptype, &f->pixelformat);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
f54->input = i;
|
|
|
|
|
2016-11-22 18:57:02 -07:00
|
|
|
f->width = rx;
|
|
|
|
f->height = tx;
|
2016-07-18 15:10:37 -06:00
|
|
|
f->field = V4L2_FIELD_NONE;
|
|
|
|
f->colorspace = V4L2_COLORSPACE_RAW;
|
|
|
|
f->bytesperline = f->width * sizeof(u16);
|
|
|
|
f->sizeimage = f->width * f->height * sizeof(u16);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_vidioc_s_input(struct file *file, void *priv, unsigned int i)
|
|
|
|
{
|
|
|
|
return rmi_f54_set_input(video_drvdata(file), i);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_vidioc_g_input(struct file *file, void *priv,
|
|
|
|
unsigned int *i)
|
|
|
|
{
|
|
|
|
struct f54_data *f54 = video_drvdata(file);
|
|
|
|
|
|
|
|
*i = f54->input;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_vidioc_fmt(struct file *file, void *priv,
|
|
|
|
struct v4l2_format *f)
|
|
|
|
{
|
|
|
|
struct f54_data *f54 = video_drvdata(file);
|
|
|
|
|
|
|
|
f->fmt.pix = f54->format;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_vidioc_enum_fmt(struct file *file, void *priv,
|
|
|
|
struct v4l2_fmtdesc *fmt)
|
|
|
|
{
|
|
|
|
if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
switch (fmt->index) {
|
|
|
|
case 0:
|
|
|
|
fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 1:
|
|
|
|
fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD08;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 2:
|
|
|
|
fmt->pixelformat = V4L2_TCH_FMT_TU16;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_vidioc_g_parm(struct file *file, void *fh,
|
|
|
|
struct v4l2_streamparm *a)
|
|
|
|
{
|
|
|
|
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
a->parm.capture.readbuffers = 1;
|
|
|
|
a->parm.capture.timeperframe.numerator = 1;
|
|
|
|
a->parm.capture.timeperframe.denominator = 10;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct v4l2_ioctl_ops rmi_f54_video_ioctl_ops = {
|
|
|
|
.vidioc_querycap = rmi_f54_vidioc_querycap,
|
|
|
|
|
|
|
|
.vidioc_enum_fmt_vid_cap = rmi_f54_vidioc_enum_fmt,
|
|
|
|
.vidioc_s_fmt_vid_cap = rmi_f54_vidioc_fmt,
|
|
|
|
.vidioc_g_fmt_vid_cap = rmi_f54_vidioc_fmt,
|
|
|
|
.vidioc_try_fmt_vid_cap = rmi_f54_vidioc_fmt,
|
|
|
|
.vidioc_g_parm = rmi_f54_vidioc_g_parm,
|
|
|
|
|
|
|
|
.vidioc_enum_input = rmi_f54_vidioc_enum_input,
|
|
|
|
.vidioc_g_input = rmi_f54_vidioc_g_input,
|
|
|
|
.vidioc_s_input = rmi_f54_vidioc_s_input,
|
|
|
|
|
|
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
|
|
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
|
|
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
|
|
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
|
|
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
|
|
|
.vidioc_expbuf = vb2_ioctl_expbuf,
|
|
|
|
|
|
|
|
.vidioc_streamon = vb2_ioctl_streamon,
|
|
|
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct video_device rmi_f54_video_device = {
|
|
|
|
.name = "Synaptics RMI4",
|
|
|
|
.fops = &rmi_f54_video_fops,
|
|
|
|
.ioctl_ops = &rmi_f54_video_ioctl_ops,
|
|
|
|
.release = video_device_release_empty,
|
|
|
|
.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH |
|
|
|
|
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING,
|
|
|
|
};
|
|
|
|
|
|
|
|
static void rmi_f54_work(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct f54_data *f54 = container_of(work, struct f54_data, work.work);
|
|
|
|
struct rmi_function *fn = f54->fn;
|
|
|
|
u8 fifo[2];
|
|
|
|
struct rmi_f54_reports *report;
|
|
|
|
int report_size;
|
|
|
|
u8 command;
|
|
|
|
u8 *data;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
data = f54->report_data;
|
|
|
|
report_size = rmi_f54_get_report_size(f54);
|
|
|
|
if (report_size == 0) {
|
|
|
|
dev_err(&fn->dev, "Bad report size, report type=%d\n",
|
|
|
|
f54->report_type);
|
|
|
|
error = -EINVAL;
|
|
|
|
goto error; /* retry won't help */
|
|
|
|
}
|
|
|
|
f54->standard_report[0].size = report_size;
|
|
|
|
report = f54->standard_report;
|
|
|
|
|
|
|
|
mutex_lock(&f54->data_mutex);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Need to check if command has completed.
|
|
|
|
* If not try again later.
|
|
|
|
*/
|
|
|
|
error = rmi_read(fn->rmi_dev, f54->fn->fd.command_base_addr,
|
|
|
|
&command);
|
|
|
|
if (error) {
|
|
|
|
dev_err(&fn->dev, "Failed to read back command\n");
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
if (command & F54_GET_REPORT) {
|
|
|
|
if (time_after(jiffies, f54->timeout)) {
|
|
|
|
dev_err(&fn->dev, "Get report command timed out\n");
|
|
|
|
error = -ETIMEDOUT;
|
|
|
|
}
|
|
|
|
report_size = 0;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
rmi_dbg(RMI_DEBUG_FN, &fn->dev, "Get report command completed, reading data\n");
|
|
|
|
|
|
|
|
report_size = 0;
|
|
|
|
for (; report->size; report++) {
|
|
|
|
fifo[0] = report->start & 0xff;
|
|
|
|
fifo[1] = (report->start >> 8) & 0xff;
|
|
|
|
error = rmi_write_block(fn->rmi_dev,
|
|
|
|
fn->fd.data_base_addr + F54_FIFO_OFFSET,
|
|
|
|
fifo, sizeof(fifo));
|
|
|
|
if (error) {
|
|
|
|
dev_err(&fn->dev, "Failed to set fifo start offset\n");
|
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = rmi_read_block(fn->rmi_dev, fn->fd.data_base_addr +
|
|
|
|
F54_REPORT_DATA_OFFSET, data,
|
|
|
|
report->size);
|
|
|
|
if (error) {
|
|
|
|
dev_err(&fn->dev, "%s: read [%d bytes] returned %d\n",
|
|
|
|
__func__, report->size, error);
|
|
|
|
goto abort;
|
|
|
|
}
|
|
|
|
data += report->size;
|
|
|
|
report_size += report->size;
|
|
|
|
}
|
|
|
|
|
|
|
|
abort:
|
|
|
|
f54->report_size = error ? 0 : report_size;
|
|
|
|
error:
|
|
|
|
if (error)
|
|
|
|
report_size = 0;
|
|
|
|
|
|
|
|
if (report_size == 0 && !error) {
|
|
|
|
queue_delayed_work(f54->workqueue, &f54->work,
|
|
|
|
msecs_to_jiffies(1));
|
|
|
|
} else {
|
|
|
|
f54->is_busy = false;
|
|
|
|
complete(&f54->cmd_done);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
drv->set_irq_bits(fn->rmi_dev, fn->irq_mask);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_detect(struct rmi_function *fn)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
struct f54_data *f54;
|
2017-06-23 01:04:51 -06:00
|
|
|
u8 buf[6];
|
2016-07-18 15:10:37 -06:00
|
|
|
|
|
|
|
f54 = dev_get_drvdata(&fn->dev);
|
|
|
|
|
|
|
|
error = rmi_read_block(fn->rmi_dev, fn->fd.query_base_addr,
|
2017-06-23 01:04:51 -06:00
|
|
|
buf, sizeof(buf));
|
2016-07-18 15:10:37 -06:00
|
|
|
if (error) {
|
|
|
|
dev_err(&fn->dev, "%s: Failed to query F54 properties\n",
|
|
|
|
__func__);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2017-06-23 01:04:51 -06:00
|
|
|
f54->num_rx_electrodes = buf[0];
|
|
|
|
f54->num_tx_electrodes = buf[1];
|
|
|
|
f54->capabilities = buf[2];
|
|
|
|
f54->clock_rate = buf[3] | (buf[4] << 8);
|
|
|
|
f54->family = buf[5];
|
2016-07-18 15:10:37 -06:00
|
|
|
|
|
|
|
rmi_dbg(RMI_DEBUG_FN, &fn->dev, "F54 num_rx_electrodes: %d\n",
|
|
|
|
f54->num_rx_electrodes);
|
|
|
|
rmi_dbg(RMI_DEBUG_FN, &fn->dev, "F54 num_tx_electrodes: %d\n",
|
|
|
|
f54->num_tx_electrodes);
|
|
|
|
rmi_dbg(RMI_DEBUG_FN, &fn->dev, "F54 capabilities: 0x%x\n",
|
|
|
|
f54->capabilities);
|
|
|
|
rmi_dbg(RMI_DEBUG_FN, &fn->dev, "F54 clock rate: 0x%x\n",
|
|
|
|
f54->clock_rate);
|
|
|
|
rmi_dbg(RMI_DEBUG_FN, &fn->dev, "F54 family: 0x%x\n",
|
|
|
|
f54->family);
|
|
|
|
|
|
|
|
f54->is_busy = false;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rmi_f54_probe(struct rmi_function *fn)
|
|
|
|
{
|
|
|
|
struct f54_data *f54;
|
|
|
|
int ret;
|
|
|
|
u8 rx, tx;
|
|
|
|
|
|
|
|
f54 = devm_kzalloc(&fn->dev, sizeof(struct f54_data), GFP_KERNEL);
|
|
|
|
if (!f54)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
f54->fn = fn;
|
|
|
|
dev_set_drvdata(&fn->dev, f54);
|
|
|
|
|
|
|
|
ret = rmi_f54_detect(fn);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
mutex_init(&f54->data_mutex);
|
|
|
|
mutex_init(&f54->status_mutex);
|
|
|
|
|
|
|
|
rx = f54->num_rx_electrodes;
|
|
|
|
tx = f54->num_tx_electrodes;
|
|
|
|
f54->report_data = devm_kzalloc(&fn->dev,
|
|
|
|
sizeof(u16) * tx * rx,
|
|
|
|
GFP_KERNEL);
|
|
|
|
if (f54->report_data == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
INIT_DELAYED_WORK(&f54->work, rmi_f54_work);
|
|
|
|
|
|
|
|
f54->workqueue = create_singlethread_workqueue("rmi4-poller");
|
|
|
|
if (!f54->workqueue)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
rmi_f54_create_input_map(f54);
|
|
|
|
|
|
|
|
/* register video device */
|
|
|
|
strlcpy(f54->v4l2.name, F54_NAME, sizeof(f54->v4l2.name));
|
|
|
|
ret = v4l2_device_register(&fn->dev, &f54->v4l2);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&fn->dev, "Unable to register video dev.\n");
|
|
|
|
goto remove_wq;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* initialize the queue */
|
|
|
|
mutex_init(&f54->lock);
|
|
|
|
f54->queue = rmi_f54_queue;
|
|
|
|
f54->queue.drv_priv = f54;
|
|
|
|
f54->queue.lock = &f54->lock;
|
|
|
|
f54->queue.dev = &fn->dev;
|
|
|
|
|
|
|
|
ret = vb2_queue_init(&f54->queue);
|
|
|
|
if (ret)
|
|
|
|
goto remove_v4l2;
|
|
|
|
|
|
|
|
f54->vdev = rmi_f54_video_device;
|
|
|
|
f54->vdev.v4l2_dev = &f54->v4l2;
|
|
|
|
f54->vdev.lock = &f54->lock;
|
|
|
|
f54->vdev.vfl_dir = VFL_DIR_RX;
|
|
|
|
f54->vdev.queue = &f54->queue;
|
|
|
|
video_set_drvdata(&f54->vdev, f54);
|
|
|
|
|
|
|
|
ret = video_register_device(&f54->vdev, VFL_TYPE_TOUCH, -1);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&fn->dev, "Unable to register video subdevice.");
|
|
|
|
goto remove_v4l2;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
remove_v4l2:
|
|
|
|
v4l2_device_unregister(&f54->v4l2);
|
|
|
|
remove_wq:
|
|
|
|
cancel_delayed_work_sync(&f54->work);
|
|
|
|
flush_workqueue(f54->workqueue);
|
|
|
|
destroy_workqueue(f54->workqueue);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rmi_f54_remove(struct rmi_function *fn)
|
|
|
|
{
|
|
|
|
struct f54_data *f54 = dev_get_drvdata(&fn->dev);
|
|
|
|
|
|
|
|
video_unregister_device(&f54->vdev);
|
|
|
|
v4l2_device_unregister(&f54->v4l2);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct rmi_function_handler rmi_f54_handler = {
|
|
|
|
.driver = {
|
|
|
|
.name = F54_NAME,
|
|
|
|
},
|
|
|
|
.func = 0x54,
|
|
|
|
.probe = rmi_f54_probe,
|
|
|
|
.config = rmi_f54_config,
|
|
|
|
.attention = rmi_f54_attention,
|
|
|
|
.remove = rmi_f54_remove,
|
|
|
|
};
|