![Nick Dyer](/assets/img/avatar_default.png)
The data in F12_2D_Ctrl8 corresponds to the inactive border width used by the RMI device. It is not in pixel units and should not be treated as a clip value. Signed-off-by: Nick Dyer <nick@shmanahar.org> Tested-by: Chris Healy <cphealy@gmail.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
532 lines
14 KiB
C
532 lines
14 KiB
C
/*
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* Copyright (c) 2012-2016 Synaptics Incorporated
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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/input.h>
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#include <linux/input/mt.h>
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#include <linux/rmi.h>
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#include "rmi_driver.h"
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#include "rmi_2d_sensor.h"
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enum rmi_f12_object_type {
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RMI_F12_OBJECT_NONE = 0x00,
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RMI_F12_OBJECT_FINGER = 0x01,
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RMI_F12_OBJECT_STYLUS = 0x02,
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RMI_F12_OBJECT_PALM = 0x03,
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RMI_F12_OBJECT_UNCLASSIFIED = 0x04,
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RMI_F12_OBJECT_GLOVED_FINGER = 0x06,
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RMI_F12_OBJECT_NARROW_OBJECT = 0x07,
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RMI_F12_OBJECT_HAND_EDGE = 0x08,
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RMI_F12_OBJECT_COVER = 0x0A,
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RMI_F12_OBJECT_STYLUS_2 = 0x0B,
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RMI_F12_OBJECT_ERASER = 0x0C,
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RMI_F12_OBJECT_SMALL_OBJECT = 0x0D,
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};
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#define F12_DATA1_BYTES_PER_OBJ 8
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struct f12_data {
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struct rmi_2d_sensor sensor;
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struct rmi_2d_sensor_platform_data sensor_pdata;
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bool has_dribble;
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u16 data_addr;
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struct rmi_register_descriptor query_reg_desc;
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struct rmi_register_descriptor control_reg_desc;
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struct rmi_register_descriptor data_reg_desc;
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/* F12 Data1 describes sensed objects */
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const struct rmi_register_desc_item *data1;
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u16 data1_offset;
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/* F12 Data5 describes finger ACM */
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const struct rmi_register_desc_item *data5;
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u16 data5_offset;
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/* F12 Data5 describes Pen */
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const struct rmi_register_desc_item *data6;
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u16 data6_offset;
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/* F12 Data9 reports relative data */
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const struct rmi_register_desc_item *data9;
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u16 data9_offset;
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const struct rmi_register_desc_item *data15;
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u16 data15_offset;
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};
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static int rmi_f12_read_sensor_tuning(struct f12_data *f12)
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{
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const struct rmi_register_desc_item *item;
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struct rmi_2d_sensor *sensor = &f12->sensor;
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struct rmi_function *fn = sensor->fn;
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struct rmi_device *rmi_dev = fn->rmi_dev;
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int ret;
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int offset;
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u8 buf[15];
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int pitch_x = 0;
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int pitch_y = 0;
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int rx_receivers = 0;
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int tx_receivers = 0;
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int sensor_flags = 0;
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item = rmi_get_register_desc_item(&f12->control_reg_desc, 8);
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if (!item) {
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dev_err(&fn->dev,
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"F12 does not have the sensor tuning control register\n");
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return -ENODEV;
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}
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offset = rmi_register_desc_calc_reg_offset(&f12->control_reg_desc, 8);
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if (item->reg_size > sizeof(buf)) {
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dev_err(&fn->dev,
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"F12 control8 should be no bigger than %zd bytes, not: %ld\n",
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sizeof(buf), item->reg_size);
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return -ENODEV;
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}
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ret = rmi_read_block(rmi_dev, fn->fd.control_base_addr + offset, buf,
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item->reg_size);
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if (ret)
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return ret;
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offset = 0;
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if (rmi_register_desc_has_subpacket(item, 0)) {
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sensor->max_x = (buf[offset + 1] << 8) | buf[offset];
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sensor->max_y = (buf[offset + 3] << 8) | buf[offset + 2];
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offset += 4;
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}
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rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: max_x: %d max_y: %d\n", __func__,
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sensor->max_x, sensor->max_y);
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if (rmi_register_desc_has_subpacket(item, 1)) {
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pitch_x = (buf[offset + 1] << 8) | buf[offset];
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pitch_y = (buf[offset + 3] << 8) | buf[offset + 2];
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offset += 4;
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}
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if (rmi_register_desc_has_subpacket(item, 2)) {
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/* Units 1/128 sensor pitch */
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rmi_dbg(RMI_DEBUG_FN, &fn->dev,
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"%s: Inactive Border xlo:%d xhi:%d ylo:%d yhi:%d\n",
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__func__,
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buf[offset], buf[offset + 1],
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buf[offset + 2], buf[offset + 3]);
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offset += 4;
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}
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if (rmi_register_desc_has_subpacket(item, 3)) {
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rx_receivers = buf[offset];
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tx_receivers = buf[offset + 1];
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offset += 2;
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}
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if (rmi_register_desc_has_subpacket(item, 4)) {
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sensor_flags = buf[offset];
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offset += 1;
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}
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sensor->x_mm = (pitch_x * rx_receivers) >> 12;
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sensor->y_mm = (pitch_y * tx_receivers) >> 12;
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rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: x_mm: %d y_mm: %d\n", __func__,
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sensor->x_mm, sensor->y_mm);
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return 0;
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}
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static void rmi_f12_process_objects(struct f12_data *f12, u8 *data1, int size)
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{
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int i;
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struct rmi_2d_sensor *sensor = &f12->sensor;
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int objects = f12->data1->num_subpackets;
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if ((f12->data1->num_subpackets * F12_DATA1_BYTES_PER_OBJ) > size)
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objects = size / F12_DATA1_BYTES_PER_OBJ;
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for (i = 0; i < objects; i++) {
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struct rmi_2d_sensor_abs_object *obj = &sensor->objs[i];
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obj->type = RMI_2D_OBJECT_NONE;
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obj->mt_tool = MT_TOOL_FINGER;
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switch (data1[0]) {
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case RMI_F12_OBJECT_FINGER:
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obj->type = RMI_2D_OBJECT_FINGER;
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break;
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case RMI_F12_OBJECT_STYLUS:
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obj->type = RMI_2D_OBJECT_STYLUS;
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obj->mt_tool = MT_TOOL_PEN;
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break;
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case RMI_F12_OBJECT_PALM:
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obj->type = RMI_2D_OBJECT_PALM;
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obj->mt_tool = MT_TOOL_PALM;
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break;
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case RMI_F12_OBJECT_UNCLASSIFIED:
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obj->type = RMI_2D_OBJECT_UNCLASSIFIED;
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break;
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}
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obj->x = (data1[2] << 8) | data1[1];
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obj->y = (data1[4] << 8) | data1[3];
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obj->z = data1[5];
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obj->wx = data1[6];
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obj->wy = data1[7];
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rmi_2d_sensor_abs_process(sensor, obj, i);
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data1 += F12_DATA1_BYTES_PER_OBJ;
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}
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if (sensor->kernel_tracking)
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input_mt_assign_slots(sensor->input,
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sensor->tracking_slots,
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sensor->tracking_pos,
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sensor->nbr_fingers,
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sensor->dmax);
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for (i = 0; i < objects; i++)
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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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{
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int retval;
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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 f12_data *f12 = dev_get_drvdata(&fn->dev);
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struct rmi_2d_sensor *sensor = &f12->sensor;
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int valid_bytes = sensor->pkt_size;
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if (drvdata->attn_data.data) {
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if (sensor->attn_size > drvdata->attn_data.size)
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valid_bytes = drvdata->attn_data.size;
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else
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valid_bytes = sensor->attn_size;
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memcpy(sensor->data_pkt, drvdata->attn_data.data,
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valid_bytes);
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drvdata->attn_data.data += sensor->attn_size;
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drvdata->attn_data.size -= sensor->attn_size;
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} else {
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retval = rmi_read_block(rmi_dev, f12->data_addr,
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sensor->data_pkt, sensor->pkt_size);
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if (retval < 0) {
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dev_err(&fn->dev, "Failed to read object data. Code: %d.\n",
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retval);
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return retval;
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}
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}
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if (f12->data1)
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rmi_f12_process_objects(f12,
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&sensor->data_pkt[f12->data1_offset], valid_bytes);
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input_mt_sync_frame(sensor->input);
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return 0;
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}
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static int rmi_f12_write_control_regs(struct rmi_function *fn)
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{
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int ret;
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const struct rmi_register_desc_item *item;
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struct rmi_device *rmi_dev = fn->rmi_dev;
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struct f12_data *f12 = dev_get_drvdata(&fn->dev);
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int control_size;
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char buf[3];
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u16 control_offset = 0;
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u8 subpacket_offset = 0;
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if (f12->has_dribble
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&& (f12->sensor.dribble != RMI_REG_STATE_DEFAULT)) {
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item = rmi_get_register_desc_item(&f12->control_reg_desc, 20);
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if (item) {
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control_offset = rmi_register_desc_calc_reg_offset(
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&f12->control_reg_desc, 20);
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/*
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* The byte containing the EnableDribble bit will be
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* in either byte 0 or byte 2 of control 20. Depending
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* on the existence of subpacket 0. If control 20 is
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* larger then 3 bytes, just read the first 3.
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*/
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control_size = min(item->reg_size, 3UL);
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ret = rmi_read_block(rmi_dev, fn->fd.control_base_addr
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+ control_offset, buf, control_size);
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if (ret)
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return ret;
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if (rmi_register_desc_has_subpacket(item, 0))
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subpacket_offset += 1;
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switch (f12->sensor.dribble) {
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case RMI_REG_STATE_OFF:
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buf[subpacket_offset] &= ~BIT(2);
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break;
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case RMI_REG_STATE_ON:
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buf[subpacket_offset] |= BIT(2);
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break;
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case RMI_REG_STATE_DEFAULT:
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default:
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break;
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}
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ret = rmi_write_block(rmi_dev,
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fn->fd.control_base_addr + control_offset,
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buf, control_size);
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if (ret)
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return ret;
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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_f12_config(struct rmi_function *fn)
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{
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struct rmi_driver *drv = fn->rmi_dev->driver;
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int ret;
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drv->set_irq_bits(fn->rmi_dev, fn->irq_mask);
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ret = rmi_f12_write_control_regs(fn);
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if (ret)
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dev_warn(&fn->dev,
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"Failed to write F12 control registers: %d\n", ret);
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return 0;
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}
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static int rmi_f12_probe(struct rmi_function *fn)
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{
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struct f12_data *f12;
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int ret;
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struct rmi_device *rmi_dev = fn->rmi_dev;
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char buf;
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u16 query_addr = fn->fd.query_base_addr;
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const struct rmi_register_desc_item *item;
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struct rmi_2d_sensor *sensor;
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struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev);
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struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev);
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u16 data_offset = 0;
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rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s\n", __func__);
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ret = rmi_read(fn->rmi_dev, query_addr, &buf);
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if (ret < 0) {
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dev_err(&fn->dev, "Failed to read general info register: %d\n",
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ret);
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return -ENODEV;
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}
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++query_addr;
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if (!(buf & BIT(0))) {
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dev_err(&fn->dev,
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"Behavior of F12 without register descriptors is undefined.\n");
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return -ENODEV;
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}
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f12 = devm_kzalloc(&fn->dev, sizeof(struct f12_data), GFP_KERNEL);
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if (!f12)
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return -ENOMEM;
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f12->has_dribble = !!(buf & BIT(3));
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if (fn->dev.of_node) {
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ret = rmi_2d_sensor_of_probe(&fn->dev, &f12->sensor_pdata);
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if (ret)
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return ret;
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} else {
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f12->sensor_pdata = pdata->sensor_pdata;
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}
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ret = rmi_read_register_desc(rmi_dev, query_addr,
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&f12->query_reg_desc);
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if (ret) {
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dev_err(&fn->dev,
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"Failed to read the Query Register Descriptor: %d\n",
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ret);
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return ret;
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}
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query_addr += 3;
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ret = rmi_read_register_desc(rmi_dev, query_addr,
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&f12->control_reg_desc);
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if (ret) {
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dev_err(&fn->dev,
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"Failed to read the Control Register Descriptor: %d\n",
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ret);
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return ret;
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}
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query_addr += 3;
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ret = rmi_read_register_desc(rmi_dev, query_addr,
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&f12->data_reg_desc);
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if (ret) {
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dev_err(&fn->dev,
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"Failed to read the Data Register Descriptor: %d\n",
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ret);
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return ret;
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}
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query_addr += 3;
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sensor = &f12->sensor;
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sensor->fn = fn;
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f12->data_addr = fn->fd.data_base_addr;
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sensor->pkt_size = rmi_register_desc_calc_size(&f12->data_reg_desc);
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sensor->axis_align =
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f12->sensor_pdata.axis_align;
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sensor->x_mm = f12->sensor_pdata.x_mm;
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sensor->y_mm = f12->sensor_pdata.y_mm;
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sensor->dribble = f12->sensor_pdata.dribble;
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if (sensor->sensor_type == rmi_sensor_default)
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sensor->sensor_type =
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f12->sensor_pdata.sensor_type;
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rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: data packet size: %d\n", __func__,
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sensor->pkt_size);
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sensor->data_pkt = devm_kzalloc(&fn->dev, sensor->pkt_size, GFP_KERNEL);
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if (!sensor->data_pkt)
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return -ENOMEM;
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dev_set_drvdata(&fn->dev, f12);
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ret = rmi_f12_read_sensor_tuning(f12);
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if (ret)
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return ret;
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/*
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* Figure out what data is contained in the data registers. HID devices
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* may have registers defined, but their data is not reported in the
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* HID attention report. Registers which are not reported in the HID
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* attention report check to see if the device is receiving data from
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* HID attention reports.
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*/
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 0);
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if (item && !drvdata->attn_data.data)
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data_offset += item->reg_size;
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 1);
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if (item) {
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f12->data1 = item;
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f12->data1_offset = data_offset;
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data_offset += item->reg_size;
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sensor->nbr_fingers = item->num_subpackets;
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sensor->report_abs = 1;
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sensor->attn_size += item->reg_size;
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}
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 2);
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if (item && !drvdata->attn_data.data)
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data_offset += item->reg_size;
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 3);
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if (item && !drvdata->attn_data.data)
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data_offset += item->reg_size;
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 4);
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if (item && !drvdata->attn_data.data)
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data_offset += item->reg_size;
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 5);
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if (item) {
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f12->data5 = item;
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f12->data5_offset = data_offset;
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data_offset += item->reg_size;
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sensor->attn_size += item->reg_size;
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}
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 6);
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if (item && !drvdata->attn_data.data) {
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f12->data6 = item;
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f12->data6_offset = data_offset;
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data_offset += item->reg_size;
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}
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 7);
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if (item && !drvdata->attn_data.data)
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data_offset += item->reg_size;
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 8);
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if (item && !drvdata->attn_data.data)
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data_offset += item->reg_size;
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 9);
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if (item && !drvdata->attn_data.data) {
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f12->data9 = item;
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f12->data9_offset = data_offset;
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data_offset += item->reg_size;
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if (!sensor->report_abs)
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sensor->report_rel = 1;
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}
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item = rmi_get_register_desc_item(&f12->data_reg_desc, 10);
|
|
if (item && !drvdata->attn_data.data)
|
|
data_offset += item->reg_size;
|
|
|
|
item = rmi_get_register_desc_item(&f12->data_reg_desc, 11);
|
|
if (item && !drvdata->attn_data.data)
|
|
data_offset += item->reg_size;
|
|
|
|
item = rmi_get_register_desc_item(&f12->data_reg_desc, 12);
|
|
if (item && !drvdata->attn_data.data)
|
|
data_offset += item->reg_size;
|
|
|
|
item = rmi_get_register_desc_item(&f12->data_reg_desc, 13);
|
|
if (item && !drvdata->attn_data.data)
|
|
data_offset += item->reg_size;
|
|
|
|
item = rmi_get_register_desc_item(&f12->data_reg_desc, 14);
|
|
if (item && !drvdata->attn_data.data)
|
|
data_offset += item->reg_size;
|
|
|
|
item = rmi_get_register_desc_item(&f12->data_reg_desc, 15);
|
|
if (item && !drvdata->attn_data.data) {
|
|
f12->data15 = item;
|
|
f12->data15_offset = data_offset;
|
|
data_offset += item->reg_size;
|
|
}
|
|
|
|
/* allocate the in-kernel tracking buffers */
|
|
sensor->tracking_pos = devm_kzalloc(&fn->dev,
|
|
sizeof(struct input_mt_pos) * sensor->nbr_fingers,
|
|
GFP_KERNEL);
|
|
sensor->tracking_slots = devm_kzalloc(&fn->dev,
|
|
sizeof(int) * sensor->nbr_fingers, GFP_KERNEL);
|
|
sensor->objs = devm_kzalloc(&fn->dev,
|
|
sizeof(struct rmi_2d_sensor_abs_object)
|
|
* sensor->nbr_fingers, GFP_KERNEL);
|
|
if (!sensor->tracking_pos || !sensor->tracking_slots || !sensor->objs)
|
|
return -ENOMEM;
|
|
|
|
ret = rmi_2d_sensor_configure_input(fn, sensor);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct rmi_function_handler rmi_f12_handler = {
|
|
.driver = {
|
|
.name = "rmi4_f12",
|
|
},
|
|
.func = 0x12,
|
|
.probe = rmi_f12_probe,
|
|
.config = rmi_f12_config,
|
|
.attention = rmi_f12_attention,
|
|
};
|