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758 lines
18 KiB
758 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (c) 2012-2015 Synaptics Incorporated |
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* Copyright (C) 2016 Zodiac Inflight Innovations |
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*/ |
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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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|
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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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/* |
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* The smbus protocol can read only 32 bytes max at a time. |
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* But this should be fine for i2c/spi as well. |
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*/ |
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#define F54_REPORT_DATA_SIZE 32 |
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|
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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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/** |
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* enum rmi_f54_report_type - RMI4 F54 report types |
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* |
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* @F54_REPORT_NONE: No Image Report. |
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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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* @F54_MAX_REPORT_TYPE: |
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* Maximum number of Report Types. Used for sanity |
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* checking. |
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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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static const char * const 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 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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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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u32 sequence; |
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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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goto unlock; |
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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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unlock: |
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mutex_unlock(&f54->data_mutex); |
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return error; |
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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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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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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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
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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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vb2_set_plane_payload(vb, 0, 0); |
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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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vb->timestamp = ktime_get_ns(); |
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vbuf->field = V4L2_FIELD_NONE; |
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vbuf->sequence = f54->sequence++; |
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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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static void rmi_f54_stop_streaming(struct vb2_queue *q) |
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{ |
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struct f54_data *f54 = vb2_get_drv_priv(q); |
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f54->sequence = 0; |
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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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.stop_streaming = rmi_f54_stop_streaming, |
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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, |
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.buf_struct_size = sizeof(struct vb2_v4l2_buffer), |
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.ops = &rmi_f54_queue_ops, |
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.mem_ops = &vb2_vmalloc_memops, |
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.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, |
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}; |
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static int rmi_f54_vidioc_querycap(struct file *file, void *priv, |
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struct v4l2_capability *cap) |
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{ |
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struct f54_data *f54 = video_drvdata(file); |
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strlcpy(cap->driver, F54_NAME, sizeof(cap->driver)); |
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strlcpy(cap->card, SYNAPTICS_INPUT_DEVICE_NAME, sizeof(cap->card)); |
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snprintf(cap->bus_info, sizeof(cap->bus_info), |
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"rmi4:%s", dev_name(&f54->fn->dev)); |
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return 0; |
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} |
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static int rmi_f54_vidioc_enum_input(struct file *file, void *priv, |
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struct v4l2_input *i) |
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{ |
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struct f54_data *f54 = video_drvdata(file); |
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enum rmi_f54_report_type reptype; |
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reptype = rmi_f54_get_reptype(f54, i->index); |
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if (reptype == F54_REPORT_NONE) |
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return -EINVAL; |
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i->type = V4L2_INPUT_TYPE_TOUCH; |
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strlcpy(i->name, rmi_f54_report_type_names[reptype], sizeof(i->name)); |
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return 0; |
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} |
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static int rmi_f54_set_input(struct f54_data *f54, unsigned int i) |
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{ |
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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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struct v4l2_pix_format *f = &f54->format; |
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enum rmi_f54_report_type reptype; |
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int ret; |
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reptype = rmi_f54_get_reptype(f54, i); |
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if (reptype == F54_REPORT_NONE) |
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return -EINVAL; |
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ret = rmi_f54_get_pixel_fmt(reptype, &f->pixelformat); |
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if (ret) |
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return ret; |
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f54->input = i; |
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f->width = rx; |
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f->height = tx; |
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f->field = V4L2_FIELD_NONE; |
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f->colorspace = V4L2_COLORSPACE_RAW; |
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f->bytesperline = f->width * sizeof(u16); |
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f->sizeimage = f->width * f->height * sizeof(u16); |
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return 0; |
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} |
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static int rmi_f54_vidioc_s_input(struct file *file, void *priv, unsigned int i) |
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{ |
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return rmi_f54_set_input(video_drvdata(file), i); |
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} |
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static int rmi_f54_vidioc_g_input(struct file *file, void *priv, |
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unsigned int *i) |
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{ |
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struct f54_data *f54 = video_drvdata(file); |
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*i = f54->input; |
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return 0; |
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} |
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static int rmi_f54_vidioc_fmt(struct file *file, void *priv, |
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struct v4l2_format *f) |
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{ |
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struct f54_data *f54 = video_drvdata(file); |
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f->fmt.pix = f54->format; |
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return 0; |
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} |
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static int rmi_f54_vidioc_enum_fmt(struct file *file, void *priv, |
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struct v4l2_fmtdesc *fmt) |
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{ |
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struct f54_data *f54 = video_drvdata(file); |
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if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
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return -EINVAL; |
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if (fmt->index) |
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return -EINVAL; |
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fmt->pixelformat = f54->format.pixelformat; |
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return 0; |
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} |
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static int rmi_f54_vidioc_g_parm(struct file *file, void *fh, |
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struct v4l2_streamparm *a) |
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{ |
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if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
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return -EINVAL; |
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a->parm.capture.readbuffers = 1; |
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a->parm.capture.timeperframe.numerator = 1; |
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a->parm.capture.timeperframe.denominator = 10; |
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return 0; |
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} |
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static const struct v4l2_ioctl_ops rmi_f54_video_ioctl_ops = { |
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.vidioc_querycap = rmi_f54_vidioc_querycap, |
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.vidioc_enum_fmt_vid_cap = rmi_f54_vidioc_enum_fmt, |
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.vidioc_s_fmt_vid_cap = rmi_f54_vidioc_fmt, |
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.vidioc_g_fmt_vid_cap = rmi_f54_vidioc_fmt, |
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.vidioc_try_fmt_vid_cap = rmi_f54_vidioc_fmt, |
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.vidioc_g_parm = rmi_f54_vidioc_g_parm, |
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.vidioc_enum_input = rmi_f54_vidioc_enum_input, |
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.vidioc_g_input = rmi_f54_vidioc_g_input, |
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.vidioc_s_input = rmi_f54_vidioc_s_input, |
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.vidioc_reqbufs = vb2_ioctl_reqbufs, |
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.vidioc_create_bufs = vb2_ioctl_create_bufs, |
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.vidioc_querybuf = vb2_ioctl_querybuf, |
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.vidioc_qbuf = vb2_ioctl_qbuf, |
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.vidioc_dqbuf = vb2_ioctl_dqbuf, |
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.vidioc_expbuf = vb2_ioctl_expbuf, |
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.vidioc_streamon = vb2_ioctl_streamon, |
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.vidioc_streamoff = vb2_ioctl_streamoff, |
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}; |
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static const struct video_device rmi_f54_video_device = { |
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.name = "Synaptics RMI4", |
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.fops = &rmi_f54_video_fops, |
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.ioctl_ops = &rmi_f54_video_ioctl_ops, |
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.release = video_device_release_empty, |
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.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | |
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V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, |
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}; |
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|
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static void rmi_f54_work(struct work_struct *work) |
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{ |
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struct f54_data *f54 = container_of(work, struct f54_data, work.work); |
|
struct rmi_function *fn = f54->fn; |
|
u8 fifo[2]; |
|
int report_size; |
|
u8 command; |
|
int error; |
|
int i; |
|
|
|
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 */ |
|
} |
|
|
|
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"); |
|
|
|
for (i = 0; i < report_size; i += F54_REPORT_DATA_SIZE) { |
|
int size = min(F54_REPORT_DATA_SIZE, report_size - i); |
|
|
|
fifo[0] = i & 0xff; |
|
fifo[1] = i >> 8; |
|
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, |
|
f54->report_data + i, size); |
|
if (error) { |
|
dev_err(&fn->dev, "%s: read [%d bytes] returned %d\n", |
|
__func__, size, error); |
|
goto abort; |
|
} |
|
} |
|
|
|
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_config(struct rmi_function *fn) |
|
{ |
|
struct rmi_driver *drv = fn->rmi_dev->driver; |
|
|
|
drv->clear_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; |
|
u8 buf[6]; |
|
|
|
f54 = dev_get_drvdata(&fn->dev); |
|
|
|
error = rmi_read_block(fn->rmi_dev, fn->fd.query_base_addr, |
|
buf, sizeof(buf)); |
|
if (error) { |
|
dev_err(&fn->dev, "%s: Failed to query F54 properties\n", |
|
__func__); |
|
return error; |
|
} |
|
|
|
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]; |
|
|
|
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, |
|
array3_size(tx, rx, sizeof(u16)), |
|
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); |
|
rmi_f54_set_input(f54, 0); |
|
|
|
/* 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); |
|
destroy_workqueue(f54->workqueue); |
|
} |
|
|
|
struct rmi_function_handler rmi_f54_handler = { |
|
.driver = { |
|
.name = F54_NAME, |
|
}, |
|
.func = 0x54, |
|
.probe = rmi_f54_probe, |
|
.config = rmi_f54_config, |
|
.remove = rmi_f54_remove, |
|
};
|
|
|