forked from Minki/linux
Input: synaptics-rmi4 - add support for F12
Function 12 implements 2D touch position sensor for newer Synaptics touch devices. It replaces F11 and no device will contain both functions. Signed-off-by: Andrew Duggan <aduggan@synaptics.com> Signed-off-by: Christopher Heiny <cheiny@synaptics.com> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Andrew Duggan
Dmitry Torokhov
parent
aaa27982b3
commit
b43d2c1e93
@ -32,3 +32,14 @@ config RMI4_F11
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Function 11 provides 2D multifinger pointing for touchscreens and
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touchpads. For sensors that support relative pointing, F11 also
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provides mouse input.
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config RMI4_F12
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bool "RMI4 Function 12 (2D pointing)"
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select RMI4_2D_SENSOR
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depends on RMI4_CORE
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help
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Say Y here if you want to add support for RMI4 function 12.
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Function 12 provides 2D multifinger pointing for touchscreens and
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touchpads. For sensors that support relative pointing, F12 also
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provides mouse input.
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@ -5,6 +5,7 @@ rmi_core-$(CONFIG_RMI4_2D_SENSOR) += rmi_2d_sensor.o
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# Function drivers
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rmi_core-$(CONFIG_RMI4_F11) += rmi_f11.o
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rmi_core-$(CONFIG_RMI4_F12) += rmi_f12.o
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# Transports
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obj-$(CONFIG_RMI4_I2C) += rmi_i2c.o
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@ -309,6 +309,9 @@ static struct rmi_function_handler *fn_handlers[] = {
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#ifdef CONFIG_RMI4_F11
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&rmi_f11_handler,
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#endif
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#ifdef CONFIG_RMI4_F12
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&rmi_f12_handler,
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#endif
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};
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static void __rmi_unregister_function_handlers(int start_idx)
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@ -100,4 +100,5 @@ char *rmi_f01_get_product_ID(struct rmi_function *fn);
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extern struct rmi_function_handler rmi_f01_handler;
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extern struct rmi_function_handler rmi_f11_handler;
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extern struct rmi_function_handler rmi_f12_handler;
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#endif
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457
drivers/input/rmi4/rmi_f12.c
Normal file
457
drivers/input/rmi4/rmi_f12.c
Normal file
@ -0,0 +1,457 @@
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/*
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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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struct f12_data {
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struct rmi_function *fn;
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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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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[14];
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int pitch_x = 0;
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int pitch_y = 0;
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int clip_x_low = 0;
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int clip_x_high = 0;
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int clip_y_low = 0;
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int clip_y_high = 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 > 14) {
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dev_err(&fn->dev, "F12 control8 should be 14 bytes, not: %ld\n",
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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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sensor->axis_align.clip_x_low = buf[offset];
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sensor->axis_align.clip_x_high = sensor->max_x
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- buf[offset + 1];
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sensor->axis_align.clip_y_low = buf[offset + 2];
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sensor->axis_align.clip_y_high = sensor->max_y
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- buf[offset + 3];
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offset += 4;
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}
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rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: x low: %d x high: %d y low: %d y high: %d\n",
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__func__, clip_x_low, clip_x_high, clip_y_low, clip_y_high);
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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)
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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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for (i = 0; i < f12->data1->num_subpackets; 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 += 8;
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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 < sensor->nbr_fingers; 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 f12_data *f12 = dev_get_drvdata(&fn->dev);
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struct rmi_2d_sensor *sensor = &f12->sensor;
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if (rmi_dev->xport->attn_data) {
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memcpy(sensor->data_pkt, rmi_dev->xport->attn_data,
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sensor->attn_size);
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rmi_dev->xport->attn_data += sensor->attn_size;
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rmi_dev->xport->attn_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]);
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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_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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drv->set_irq_bits(fn->rmi_dev, fn->irq_mask);
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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_transport_dev *xport = rmi_dev->xport;
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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 & 0x1)) {
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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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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 if (pdata->sensor_pdata) {
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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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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 && !xport->attn_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 && !xport->attn_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 && !xport->attn_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 && !xport->attn_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 && !xport->attn_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 && !xport->attn_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 && !xport->attn_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);
|
||||
if (item && !xport->attn_data) {
|
||||
f12->data9 = item;
|
||||
f12->data9_offset = data_offset;
|
||||
data_offset += item->reg_size;
|
||||
if (!sensor->report_abs)
|
||||
sensor->report_rel = 1;
|
||||
}
|
||||
|
||||
item = rmi_get_register_desc_item(&f12->data_reg_desc, 10);
|
||||
if (item && !xport->attn_data)
|
||||
data_offset += item->reg_size;
|
||||
|
||||
item = rmi_get_register_desc_item(&f12->data_reg_desc, 11);
|
||||
if (item && !xport->attn_data)
|
||||
data_offset += item->reg_size;
|
||||
|
||||
item = rmi_get_register_desc_item(&f12->data_reg_desc, 12);
|
||||
if (item && !xport->attn_data)
|
||||
data_offset += item->reg_size;
|
||||
|
||||
item = rmi_get_register_desc_item(&f12->data_reg_desc, 13);
|
||||
if (item && !xport->attn_data)
|
||||
data_offset += item->reg_size;
|
||||
|
||||
item = rmi_get_register_desc_item(&f12->data_reg_desc, 14);
|
||||
if (item && !xport->attn_data)
|
||||
data_offset += item->reg_size;
|
||||
|
||||
item = rmi_get_register_desc_item(&f12->data_reg_desc, 15);
|
||||
if (item && !xport->attn_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,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user