617 lines
16 KiB
C
617 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2019 MediaTek Inc.
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*/
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#include "tpd.h"
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#include <linux/slab.h>
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#include <linux/device.h>
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#include <linux/miscdevice.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include <linux/fb.h>
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#include <linux/of_gpio.h>
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#include <linux/workqueue.h>
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#ifdef CONFIG_COMPAT
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#include <linux/compat.h>
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#endif
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/* for magnify velocity******************************************** */
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#define TOUCH_IOC_MAGIC 'A'
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#define TPD_GET_VELOCITY_CUSTOM_X _IO(TOUCH_IOC_MAGIC, 0)
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#define TPD_GET_VELOCITY_CUSTOM_Y _IO(TOUCH_IOC_MAGIC, 1)
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#define TPD_GET_FILTER_PARA _IOWR(TOUCH_IOC_MAGIC, 2, struct tpd_filter_t)
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#ifdef CONFIG_COMPAT
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#define COMPAT_TPD_GET_FILTER_PARA _IOWR(TOUCH_IOC_MAGIC, \
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2, struct tpd_filter_t)
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#endif
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struct tpd_filter_t tpd_filter;
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struct tpd_dts_info tpd_dts_data;
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const struct of_device_id touch_of_match[] = {
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{ .compatible = "goodix,touch", },
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{},
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};
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void tpd_get_dts_info(void)
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{
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struct device_node *node1 = NULL;
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int key_dim_local[16], i;
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int convert_err = -EINVAL;
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node1 = of_find_matching_node(node1, touch_of_match);
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if (!node1) {
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TPD_ERR("can't find touch compatible custom node\n");
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} else {
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of_property_read_u32(node1,
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"tpd-max-touch-num", &tpd_dts_data.touch_max_num);
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of_property_read_u32_array(node1, "tpd-resolution",
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tpd_dts_data.tpd_resolution,
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ARRAY_SIZE(tpd_dts_data.tpd_resolution));
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TPD_DEBUG("[tpd] resulution is %d %d",
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tpd_dts_data.tpd_resolution[0],
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tpd_dts_data.tpd_resolution[1]);
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#if defined(CONFIG_LCM_WIDTH) && defined(CONFIG_LCM_HEIGHT)
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convert_err = kstrtou32(CONFIG_LCM_WIDTH, 10,
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&tpd_dts_data.lcm_resolution[0]);
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if (convert_err)
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TPD_ERR("GET LCM WIDTH failed!\n");
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convert_err = kstrtou32(CONFIG_LCM_HEIGHT, 10,
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&tpd_dts_data.lcm_resolution[1]);
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if (convert_err)
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TPD_ERR("GET LCM HEIGHT failed!\n");
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#else
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TPD_DEBUG("Set Default lcm-resolution!");
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of_property_read_u32_array(node1, "lcm-resolution",
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tpd_dts_data.lcm_resolution,
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ARRAY_SIZE(tpd_dts_data.lcm_resolution));
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#endif
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TPD_DEBUG("[lcm] resulution is %d %d",
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tpd_dts_data.lcm_resolution[0],
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tpd_dts_data.lcm_resolution[1]);
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if (tpd_dts_data.use_tpd_button) {
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of_property_read_u32(node1,
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"tpd-key-num", &tpd_dts_data.tpd_key_num);
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if (of_property_read_u32_array(node1, "tpd-key-local",
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tpd_dts_data.tpd_key_local,
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ARRAY_SIZE(tpd_dts_data.tpd_key_local)))
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TPD_DEBUG("tpd-key-local: %d %d %d %d",
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tpd_dts_data.tpd_key_local[0],
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tpd_dts_data.tpd_key_local[1],
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tpd_dts_data.tpd_key_local[2],
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tpd_dts_data.tpd_key_local[3]);
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if (of_property_read_u32_array(node1,
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"tpd-key-dim-local",
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key_dim_local, ARRAY_SIZE(key_dim_local))) {
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memcpy(tpd_dts_data.tpd_key_dim_local,
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key_dim_local, sizeof(key_dim_local));
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for (i = 0; i < 4; i++) {
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pr_info("[tpd]key[%d].key_x = %d\n",
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i, tpd_dts_data
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.tpd_key_dim_local[i]
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.key_x);
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pr_info("[tpd]key[%d].key_y = %d\n",
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i, tpd_dts_data
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.tpd_key_dim_local[i]
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.key_y);
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pr_info("[tpd]key[%d].key_W = %d\n",
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i, tpd_dts_data
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.tpd_key_dim_local[i]
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.key_width);
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pr_info("[tpd]key[%d].key_H = %d\n",
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i, tpd_dts_data
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.tpd_key_dim_local[i]
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.key_height);
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}
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}
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}
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of_property_read_u32(node1, "tpd-filter-enable",
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&tpd_dts_data.touch_filter.enable);
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if (tpd_dts_data.touch_filter.enable) {
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of_property_read_u32(node1,
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"tpd-filter-pixel-density",
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&tpd_dts_data.touch_filter.pixel_density);
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if (of_property_read_u32_array(node1,
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"tpd-filter-custom-prameters",
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(u32 *)tpd_dts_data.touch_filter.W_W,
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ARRAY_SIZE(tpd_dts_data.touch_filter.W_W)))
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TPD_DEBUG("get tpd-filter-custom-parameters");
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if (of_property_read_u32_array(node1,
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"tpd-filter-custom-speed",
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tpd_dts_data.touch_filter.VECLOCITY_THRESHOLD,
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ARRAY_SIZE(tpd_dts_data
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.touch_filter
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.VECLOCITY_THRESHOLD)))
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TPD_DEBUG("get tpd-filter-custom-speed");
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}
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memcpy(&tpd_filter,
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&tpd_dts_data.touch_filter, sizeof(tpd_filter));
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TPD_DEBUG("[tpd]tpd-filter-enable = %d, pixel_density = %d\n",
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tpd_filter.enable, tpd_filter.pixel_density);
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tpd_dts_data.tpd_use_ext_gpio =
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of_property_read_bool(node1, "tpd-use-ext-gpio");
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of_property_read_u32(node1,
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"tpd-rst-ext-gpio-num",
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&tpd_dts_data.rst_ext_gpio_num);
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tpd_dts_data.eint_gpio_num = of_get_named_gpio(node1,
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"goodix,eint-gpio", 0);
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if (tpd_dts_data.eint_gpio_num < 0) {
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TPD_DEBUG("tpd Invalid eint-gpio in dt: %d\n",
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tpd_dts_data.eint_gpio_num);
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}
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tpd_dts_data.rst_gpio_num = of_get_named_gpio(node1,
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"goodix,reset-gpio", 0);
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if (tpd_dts_data.rst_gpio_num < 0) {
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TPD_DEBUG("tpd Invalid reset-gpio in dt: %d\n",
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tpd_dts_data.rst_gpio_num);
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}
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if (of_property_read_string(node1,
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"tpd-cfg-version", &tpd_dts_data.cfg_version))
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TPD_DEBUG("tpd-cfg-version: %s\n",
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tpd_dts_data.cfg_version);
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tpd_dts_data.x2x = of_property_read_bool(node1,
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"goodix,x2x");
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tpd_dts_data.y2y = of_property_read_bool(node1,
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"goodix,y2y");
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}
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}
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static int tpd_misc_open(struct inode *inode, struct file *file)
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{
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return nonseekable_open(inode, file);
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}
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static int tpd_misc_release(struct inode *inode, struct file *file)
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{
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return 0;
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}
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#ifdef CONFIG_COMPAT
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static long tpd_compat_ioctl(
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struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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long ret;
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void __user *arg32 = compat_ptr(arg);
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if (!file->f_op || !file->f_op->unlocked_ioctl)
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return -ENOTTY;
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switch (cmd) {
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case COMPAT_TPD_GET_FILTER_PARA:
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if (arg32 == NULL) {
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TPD_DEBUG("invalid argument.");
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return -EINVAL;
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}
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ret = file->f_op->unlocked_ioctl(file, TPD_GET_FILTER_PARA,
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(unsigned long)arg32);
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if (ret) {
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TPD_DEBUG("TPD_GET_FILTER_PARA unlocked_ioctl failed.");
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return ret;
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}
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break;
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default:
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TPD_DEBUG("tpd: unknown IOCTL: 0x%08x\n", cmd);
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ret = -ENOIOCTLCMD;
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break;
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}
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return ret;
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}
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#endif
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static long tpd_unlocked_ioctl(struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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/* char strbuf[256]; */
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void __user *data;
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long err = 0;
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if (_IOC_DIR(cmd) & _IOC_READ)
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err = !access_ok(VERIFY_WRITE,
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(void __user *)arg, _IOC_SIZE(cmd));
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else if (_IOC_DIR(cmd) & _IOC_WRITE)
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err = !access_ok(VERIFY_READ,
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(void __user *)arg, _IOC_SIZE(cmd));
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if (err) {
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TPD_DEBUG("tpd: access error: %08X, (%2d, %2d)\n",
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cmd, _IOC_DIR(cmd), _IOC_SIZE(cmd));
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return -EFAULT;
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}
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switch (cmd) {
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case TPD_GET_VELOCITY_CUSTOM_X:
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data = (void __user *)arg;
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if (data == NULL) {
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err = -EINVAL;
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break;
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}
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if (copy_to_user(data,
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&tpd_v_magnify_x, sizeof(tpd_v_magnify_x))) {
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err = -EFAULT;
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break;
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}
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break;
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case TPD_GET_VELOCITY_CUSTOM_Y:
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data = (void __user *)arg;
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if (data == NULL) {
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err = -EINVAL;
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break;
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}
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if (copy_to_user(data,
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&tpd_v_magnify_y, sizeof(tpd_v_magnify_y))) {
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err = -EFAULT;
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break;
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}
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break;
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case TPD_GET_FILTER_PARA:
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data = (void __user *) arg;
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if (data == NULL) {
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err = -EINVAL;
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TPD_ERR("GET_FILTER_PARA: data is null\n");
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break;
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}
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if (copy_to_user(data, &tpd_filter,
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sizeof(struct tpd_filter_t))) {
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TPD_ERR("GET_FILTER_PARA: copy data error\n");
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err = -EFAULT;
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break;
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}
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break;
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default:
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TPD_DEBUG("tpd: unknown IOCTL: 0x%08x\n", cmd);
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err = -ENOIOCTLCMD;
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break;
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}
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return err;
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}
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static struct work_struct touch_resume_work;
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static struct workqueue_struct *touch_resume_workqueue;
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static const struct file_operations tpd_fops = {
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/* .owner = THIS_MODULE, */
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.open = tpd_misc_open,
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.release = tpd_misc_release,
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.unlocked_ioctl = tpd_unlocked_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = tpd_compat_ioctl,
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#endif
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};
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/*---------------------------------------------------------------------------*/
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static struct miscdevice tpd_misc_device = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = "touch",
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.fops = &tpd_fops,
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};
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/* ********************************************** */
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/* #endif */
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/* function definitions */
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static int __init tpd_device_init(void);
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static void __exit tpd_device_exit(void);
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static int tpd_probe(struct platform_device *pdev);
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static int tpd_remove(struct platform_device *pdev);
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static struct work_struct tpd_init_work;
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static struct workqueue_struct *tpd_init_workqueue;
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static int tpd_suspend_flag;
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int tpd_register_flag;
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/* global variable definitions */
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struct tpd_device *tpd;
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static struct tpd_driver_t tpd_driver_list[TP_DRV_MAX_COUNT]; /* = {0}; */
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struct platform_device tpd_device = {
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.name = TPD_DEVICE,
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.id = -1,
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};
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const struct dev_pm_ops tpd_pm_ops = {
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.suspend = NULL,
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.resume = NULL,
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};
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static struct platform_driver tpd_driver = {
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.remove = tpd_remove,
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.shutdown = NULL,
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.probe = tpd_probe,
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.driver = {
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.name = TPD_DEVICE,
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.pm = &tpd_pm_ops,
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.owner = THIS_MODULE,
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.of_match_table = touch_of_match,
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},
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};
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static struct tpd_driver_t *g_tpd_drv;
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/* hh: use fb_notifier */
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static struct notifier_block tpd_fb_notifier;
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/* use fb_notifier */
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static void touch_resume_workqueue_callback(struct work_struct *work)
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{
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TPD_DEBUG("GTP %s\n", __func__);
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g_tpd_drv->resume(NULL);
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tpd_suspend_flag = 0;
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}
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static int tpd_fb_notifier_callback(
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struct notifier_block *self,
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unsigned long event, void *data)
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{
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struct fb_event *evdata = NULL;
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int blank;
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int err = 0;
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TPD_DEBUG("%s\n", __func__);
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evdata = data;
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/* If we aren't interested in this event, skip it immediately ... */
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if (event != FB_EVENT_BLANK)
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return 0;
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blank = *(int *)evdata->data;
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TPD_DEBUG("fb_notify(blank=%d)\n", blank);
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switch (blank) {
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case FB_BLANK_UNBLANK:
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TPD_DEBUG("LCD ON Notify\n");
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if (g_tpd_drv && tpd_suspend_flag) {
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err = queue_work(touch_resume_workqueue,
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&touch_resume_work);
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if (!err) {
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TPD_ERR("start resume_workqueue failed\n");
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return err;
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}
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}
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break;
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case FB_BLANK_POWERDOWN:
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TPD_DEBUG("LCD OFF Notify\n");
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if (g_tpd_drv && !tpd_suspend_flag) {
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err = cancel_work_sync(&touch_resume_work);
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if (!err)
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TPD_ERR("cancel resume_workqueue failed\n");
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g_tpd_drv->suspend(NULL);
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}
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tpd_suspend_flag = 1;
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break;
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default:
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break;
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}
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return 0;
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}
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/* Add driver: if find TPD_TYPE_CAPACITIVE driver successfully, loading it */
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int tpd_driver_add(struct tpd_driver_t *tpd_drv)
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{
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int i;
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if (g_tpd_drv != NULL) {
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TPD_ERR("touch driver exist\n");
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return -1;
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}
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/* check parameter */
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if (tpd_drv == NULL)
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return -1;
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tpd_drv->tpd_have_button = tpd_dts_data.use_tpd_button;
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/* R-touch */
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if (strcmp(tpd_drv->tpd_device_name, "generic") == 0) {
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tpd_driver_list[0].tpd_device_name = tpd_drv->tpd_device_name;
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tpd_driver_list[0].tpd_local_init = tpd_drv->tpd_local_init;
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tpd_driver_list[0].suspend = tpd_drv->suspend;
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tpd_driver_list[0].resume = tpd_drv->resume;
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tpd_driver_list[0].tpd_have_button = tpd_drv->tpd_have_button;
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return 0;
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}
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for (i = 1; i < TP_DRV_MAX_COUNT; i++) {
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/* add tpd driver into list */
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if (tpd_driver_list[i].tpd_device_name == NULL) {
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tpd_driver_list[i].tpd_device_name =
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tpd_drv->tpd_device_name;
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tpd_driver_list[i].tpd_local_init =
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tpd_drv->tpd_local_init;
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tpd_driver_list[i].suspend = tpd_drv->suspend;
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tpd_driver_list[i].resume = tpd_drv->resume;
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tpd_driver_list[i].tpd_have_button =
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tpd_drv->tpd_have_button;
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tpd_driver_list[i].attrs = tpd_drv->attrs;
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break;
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}
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if (strcmp(tpd_driver_list[i].tpd_device_name,
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tpd_drv->tpd_device_name) == 0)
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return 1; /* driver exist */
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}
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return 0;
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}
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int tpd_driver_remove(struct tpd_driver_t *tpd_drv)
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{
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int i = 0;
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/* check parameter */
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if (tpd_drv == NULL)
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return -1;
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for (i = 0; i < TP_DRV_MAX_COUNT; i++) {
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/* find it */
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if (strcmp(tpd_driver_list[i].tpd_device_name,
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tpd_drv->tpd_device_name) == 0) {
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memset(&tpd_driver_list[i], 0,
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sizeof(struct tpd_driver_t));
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break;
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}
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}
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return 0;
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}
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static void tpd_create_attributes(struct device *dev, struct tpd_attrs *attrs)
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{
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int num = attrs->num;
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for (; num > 0;) {
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if (device_create_file(dev, attrs->attr[--num]))
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TPD_DEBUG("tpd create attributes file failed\n");
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}
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}
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/* touch panel probe */
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static int tpd_probe(struct platform_device *pdev)
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{
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int touch_type = 1; /* 0:R-touch, 1: Cap-touch */
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int i = 0;
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TPD_DEBUG("enter %s, %d\n", __func__, __LINE__);
|
|
|
|
tpd = kmalloc(sizeof(struct tpd_device), GFP_KERNEL);
|
|
if (tpd == NULL)
|
|
return -ENOMEM;
|
|
memset(tpd, 0, sizeof(struct tpd_device));
|
|
|
|
/* allocate input device */
|
|
tpd->dev = input_allocate_device();
|
|
if (tpd->dev == NULL) {
|
|
kfree(tpd);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
tpd_mode = TPD_MODE_NORMAL;
|
|
tpd_mode_axis = 0;
|
|
tpd_mode_min = tpd_dts_data.lcm_resolution[1] / 2;
|
|
tpd_mode_max = tpd_dts_data.lcm_resolution[1];
|
|
tpd_mode_keypad_tolerance = tpd_dts_data.lcm_resolution[0] *
|
|
tpd_dts_data.lcm_resolution[0] / 1600;
|
|
/* save dev for regulator_get() before tpd_local_init() */
|
|
tpd->tpd_dev = &pdev->dev;
|
|
for (i = 1; i < TP_DRV_MAX_COUNT; i++) {
|
|
/* add tpd driver into list */
|
|
if (tpd_driver_list[i].tpd_device_name != NULL) {
|
|
tpd_driver_list[i].tpd_local_init();
|
|
/* msleep(1); */
|
|
if (tpd_load_status == 1) {
|
|
TPD_DEBUG("%s, tpd_driver_name=%s\n", __func__,
|
|
tpd_driver_list[i].tpd_device_name);
|
|
g_tpd_drv = &tpd_driver_list[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (g_tpd_drv == NULL) {
|
|
if (tpd_driver_list[0].tpd_device_name != NULL) {
|
|
g_tpd_drv = &tpd_driver_list[0];
|
|
/* touch_type:0: r-touch, 1: C-touch */
|
|
touch_type = 0;
|
|
g_tpd_drv->tpd_local_init();
|
|
TPD_DEBUG("Generic touch panel driver\n");
|
|
} else {
|
|
TPD_ERR("no touch driver is loaded!!\n");
|
|
return 0;
|
|
}
|
|
}
|
|
touch_resume_workqueue = create_singlethread_workqueue("touch_resume");
|
|
INIT_WORK(&touch_resume_work, touch_resume_workqueue_callback);
|
|
/* use fb_notifier */
|
|
tpd_fb_notifier.notifier_call = tpd_fb_notifier_callback;
|
|
if (fb_register_client(&tpd_fb_notifier))
|
|
TPD_ERR("register fb_notifier fail!\n");
|
|
|
|
/* TPD_TYPE_CAPACITIVE handle */
|
|
if (touch_type == 1) {
|
|
/* struct input_dev dev initialization and registration */
|
|
tpd->dev->name = TPD_INPUT_DEVICE;
|
|
set_bit(EV_SYN, tpd->dev->evbit);
|
|
set_bit(EV_ABS, tpd->dev->evbit);
|
|
set_bit(EV_KEY, tpd->dev->evbit);
|
|
set_bit(BTN_TOUCH, tpd->dev->keybit);
|
|
set_bit(BTN_TOOL_FINGER, tpd->dev->keybit);
|
|
set_bit(ABS_MT_TRACKING_ID, tpd->dev->absbit);
|
|
set_bit(ABS_MT_TOUCH_MAJOR, tpd->dev->absbit);
|
|
set_bit(ABS_MT_TOUCH_MINOR, tpd->dev->absbit);
|
|
set_bit(ABS_MT_POSITION_X, tpd->dev->absbit);
|
|
set_bit(ABS_MT_POSITION_Y, tpd->dev->absbit);
|
|
set_bit(INPUT_PROP_DIRECT, tpd->dev->propbit);
|
|
input_set_abs_params(tpd->dev,
|
|
ABS_MT_POSITION_X, 0,
|
|
tpd_dts_data.lcm_resolution[0], 0, 0);
|
|
input_set_abs_params(tpd->dev,
|
|
ABS_MT_POSITION_Y, 0,
|
|
tpd_dts_data.lcm_resolution[1], 0, 0);
|
|
input_set_abs_params(tpd->dev,
|
|
ABS_MT_TOUCH_MAJOR, 0, 100, 0, 0);
|
|
input_set_abs_params(tpd->dev,
|
|
ABS_MT_TOUCH_MINOR, 0, 100, 0, 0);
|
|
TPD_DEBUG("Cap touch panel driver\n");
|
|
}
|
|
|
|
if (input_register_device(tpd->dev))
|
|
TPD_ERR("input_register_device failed.(tpd)\n");
|
|
else
|
|
tpd_register_flag = 1;
|
|
|
|
if (g_tpd_drv->tpd_have_button)
|
|
tpd_button_init();
|
|
|
|
if (g_tpd_drv->attrs.num)
|
|
tpd_create_attributes(&pdev->dev, &g_tpd_drv->attrs);
|
|
|
|
if (misc_register(&tpd_misc_device))
|
|
TPD_ERR("mtk_tpd: tpd_misc_device register failed\n");
|
|
|
|
return 0;
|
|
}
|
|
static int tpd_remove(struct platform_device *pdev)
|
|
{
|
|
input_unregister_device(tpd->dev);
|
|
return 0;
|
|
}
|
|
|
|
/* called when loaded into kernel */
|
|
static void tpd_init_work_callback(struct work_struct *work)
|
|
{
|
|
TPD_DEBUG("MediaTek touch panel driver init\n");
|
|
if (platform_driver_register(&tpd_driver) != 0)
|
|
TPD_ERR("unable to register touch panel driver.\n");
|
|
}
|
|
static int __init tpd_device_init(void)
|
|
{
|
|
int res = 0;
|
|
/* load touch driver first */
|
|
gt1x_driver_init();
|
|
tpd_log_init();
|
|
|
|
tpd_init_workqueue = create_singlethread_workqueue("mtk-tpd");
|
|
INIT_WORK(&tpd_init_work, tpd_init_work_callback);
|
|
|
|
res = queue_work(tpd_init_workqueue, &tpd_init_work);
|
|
if (!res)
|
|
TPD_ERR("tpd : touch device init failed res:%d\n", res);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit tpd_device_exit(void)
|
|
{
|
|
tpd_log_exit();
|
|
gt1x_generic_exit();
|
|
misc_deregister(&tpd_misc_device);
|
|
fb_unregister_client(&tpd_fb_notifier);
|
|
gt1x_driver_exit();
|
|
cancel_work_sync(&tpd_init_work);
|
|
destroy_workqueue(tpd_init_workqueue);
|
|
platform_driver_unregister(&tpd_driver);
|
|
TPD_DEBUG("Touch exit done\n");
|
|
}
|
|
|
|
late_initcall(tpd_device_init);
|
|
module_exit(tpd_device_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("MediaTek touch panel driver");
|