407 lines
9.3 KiB
C
407 lines
9.3 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/delay.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/kthread.h>
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#include <linux/sched.h>
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#include <linux/time.h>
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#include <linux/uaccess.h>
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#include <linux/wait.h>
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#include "include/tpd_gt9xx_common.h"
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#include <linux/device.h>
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#include <linux/proc_fs.h> /*proc*/
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#pragma pack(1)
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struct st_cmd_head {
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u8 wr; /* write read flag - 0:R 1:W 2:PID 3: */
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u8 flag; /* 0:no need flag/int 1: need flag 2:need int */
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u8 flag_addr[2]; /* flag address */
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u8 flag_val; /* flag val */
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u8 flag_relation; /* flag_val:flag 0:not equal 1:equal 2:> 3:< */
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u16 circle; /* polling cycle */
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u8 times; /* plling times */
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u8 retry; /* I2C retry times */
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u16 delay; /* delay before read or after write */
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u16 data_len; /* data length */
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u8 addr_len; /* address length */
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u8 addr[2]; /* address */
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u8 res[3]; /* reserved */
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u8 *data; /* data pointer */
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};
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#pragma pack()
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struct st_cmd_head cmd_head;
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#define DATA_LENGTH_UINT 512
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#define CMD_HEAD_LENGTH (sizeof(struct st_cmd_head) - sizeof(u8 *))
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#define GOODIX_ENTRY_NAME "goodix_tool"
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static char procname[20] = {0};
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static struct i2c_client *gt_client;
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#if 0
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static struct proc_dir_entry *goodix_proc_entry;
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#endif
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static s32 goodix_tool_write(struct file *filp, const char __user *buff,
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unsigned long len, void *data);
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static s32 goodix_tool_read(char *page, char **start, off_t off, int count,
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int *eof, void *data);
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static s32 (*tool_i2c_read)(u8 *, u16);
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static s32 (*tool_i2c_write)(u8 *, u16);
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s32 DATA_LENGTH;
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s8 IC_TYPE[16] = "GT9XX";
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static void tool_set_proc_name(char *procname)
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{
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sprintf(procname, "gmnode");
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}
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static ssize_t goodix_tool_upper_read(struct file *file, char __user *buffer,
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size_t count, loff_t *ppos)
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{
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return goodix_tool_read(buffer, NULL, 0, count, NULL, ppos);
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}
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static ssize_t goodix_tool_upper_write(struct file *file,
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const char __user *buffer, size_t count,
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loff_t *ppos)
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{
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return goodix_tool_write(file, buffer, count, ppos);
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}
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static const struct file_operations gt_tool_fops = {
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.write = goodix_tool_upper_write, .read = goodix_tool_upper_read};
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static s32 tool_i2c_read_no_extra(u8 *buf, u16 len)
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{
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s32 ret = -1;
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ret = gtp_i2c_read(gt_client, buf, len + GTP_ADDR_LENGTH);
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return ret;
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}
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static s32 tool_i2c_write_no_extra(u8 *buf, u16 len)
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{
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s32 ret = -1;
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ret = gtp_i2c_write(gt_client, buf, len);
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return ret;
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}
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static s32 tool_i2c_read_with_extra(u8 *buf, u16 len)
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{
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s32 ret = -1;
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u8 pre[2] = {0x0f, 0xff};
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u8 end[2] = {0x80, 0x00};
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tool_i2c_write_no_extra(pre, 2);
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ret = tool_i2c_read_no_extra(buf, len);
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tool_i2c_write_no_extra(end, 2);
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return ret;
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}
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static s32 tool_i2c_write_with_extra(u8 *buf, u16 len)
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{
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s32 ret = -1;
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u8 pre[2] = {0x0f, 0xff};
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u8 end[2] = {0x80, 0x00};
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tool_i2c_write_no_extra(pre, 2);
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ret = tool_i2c_write_no_extra(buf, len);
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tool_i2c_write_no_extra(end, 2);
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return ret;
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}
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static void register_i2c_func(void)
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{
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/* if (!strncmp(IC_TYPE, "GT818", 5) || !strncmp(IC_TYPE, "GT816", 5) */
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/* || !strncmp(IC_TYPE, "GT811", 5) || !strncmp(IC_TYPE, "GT818F", 6) */
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/* || !strncmp(IC_TYPE, "GT827", 5) || !strncmp(IC_TYPE,"GT828", 5) */
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/* || !strncmp(IC_TYPE, "GT813", 5)) */
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if (strncmp(IC_TYPE, "GT8110", 6) && strncmp(IC_TYPE, "GT8105", 6) &&
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strncmp(IC_TYPE, "GT801", 5) && strncmp(IC_TYPE, "GT800", 5) &&
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strncmp(IC_TYPE, "GT801PLUS", 9) && strncmp(IC_TYPE, "GT811", 5) &&
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strncmp(IC_TYPE, "GTxxx", 5) && strncmp(IC_TYPE, "GT9XX", 5)) {
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tool_i2c_read = tool_i2c_read_with_extra;
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tool_i2c_write = tool_i2c_write_with_extra;
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GTP_DEBUG("I2C function: with pre and end cmd!");
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} else {
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tool_i2c_read = tool_i2c_read_no_extra;
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tool_i2c_write = tool_i2c_write_no_extra;
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GTP_INFO("I2C function: without pre and end cmd!");
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}
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}
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static void unregister_i2c_func(void)
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{
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tool_i2c_read = NULL;
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tool_i2c_write = NULL;
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GTP_INFO("I2C function: unregister i2c transfer function!");
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}
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s32 init_wr_node(struct i2c_client *client)
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{
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s32 i;
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gt_client = i2c_client_point;
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memset(&cmd_head, 0, sizeof(cmd_head));
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cmd_head.data = NULL;
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i = 5;
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while ((!cmd_head.data) && i) {
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cmd_head.data = kzalloc(i * DATA_LENGTH_UINT, GFP_KERNEL);
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if (cmd_head.data != NULL)
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break;
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i--;
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}
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if (i) {
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DATA_LENGTH = i * DATA_LENGTH_UINT + GTP_ADDR_LENGTH;
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GTP_INFO("Applied memory size:%d.", DATA_LENGTH);
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} else {
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GTP_ERROR("Apply for memory failed.");
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return FAIL;
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}
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cmd_head.addr_len = 2;
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cmd_head.retry = 5;
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register_i2c_func();
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tool_set_proc_name(procname);
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#if 0 /* fix 3.10 */
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goodix_proc_entry = create_proc_entry(gtp_tool_entry, 0664, NULL);
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if (goodix_proc_entry == NULL) {
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GTP_ERROR("Couldn't create proc entry!");
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return FAIL;
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}
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GTP_INFO("Create proc entry success!");
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goodix_proc_entry->write_proc = goodix_tool_write;
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goodix_proc_entry->read_proc = goodix_tool_read;
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#else
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if (proc_create(procname, 0660, NULL, >_tool_fops) == NULL) {
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GTP_ERROR("create_proc_entry %s failed", procname);
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return -1;
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}
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#endif
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return SUCCESS;
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}
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void uninit_wr_node(void)
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{
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kfree(cmd_head.data);
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cmd_head.data = NULL;
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unregister_i2c_func();
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remove_proc_entry(procname, NULL);
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}
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static u8 relation(u8 src, u8 dst, u8 rlt)
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{
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u8 ret = 0;
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switch (rlt) {
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case 0:
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ret = (src != dst) ? true : false;
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break;
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case 1:
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ret = (src == dst) ? true : false;
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GTP_DEBUG("equal:src:0x%02x dst:0x%02x ret:%d.", src, dst,
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(s32)ret);
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break;
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case 2:
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ret = (src > dst) ? true : false;
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break;
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case 3:
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ret = (src < dst) ? true : false;
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break;
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case 4:
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ret = (src & dst) ? true : false;
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break;
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case 5:
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ret = (!(src | dst)) ? true : false;
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break;
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default:
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ret = false;
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break;
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}
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return ret;
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}
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/*
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*******************************************************
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*Function:
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* Comfirm function.
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*Input:
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* None.
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*Output:
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* Return write length.
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*********************************************************
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*/
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static u8 comfirm(void)
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{
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s32 i = 0;
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u8 buf[32];
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/* memcpy(&buf[GTP_ADDR_LENGTH - cmd_head.addr_len], */
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/* &cmd_head.flag_addr, cmd_head.addr_len); */
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/* memcpy(buf, &cmd_head.flag_addr, cmd_head.addr_len);*/
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/*Modified by Scott, 2012-02-17 */
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memcpy(buf, cmd_head.flag_addr, cmd_head.addr_len);
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for (i = 0; i < cmd_head.times; i++) {
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if (tool_i2c_read(buf, 1) <= 0) {
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GTP_ERROR("Read flag data failed!");
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return FAIL;
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}
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if (true == relation(buf[GTP_ADDR_LENGTH], cmd_head.flag_val,
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cmd_head.flag_relation)) {
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GTP_DEBUG("value at flag addr:0x%02x.",
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buf[GTP_ADDR_LENGTH]);
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GTP_DEBUG("flag value:0x%02x.", cmd_head.flag_val);
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break;
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}
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msleep(cmd_head.circle);
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}
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if (i >= cmd_head.times) {
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GTP_ERROR("Didn't get the flag to continue!");
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return FAIL;
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}
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return SUCCESS;
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}
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/*
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* ******************************************************
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* Function:
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* Goodix tool write function.
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* Input:
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* standard proc write function param.
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* Output:
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* Return write length.
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* *******************************************************
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*/
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static s32 goodix_tool_write(struct file *filp, const char __user *buff,
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unsigned long len, void *data)
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{
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return 0;
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}
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/*
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*******************************************************
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*Function:
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* Goodix tool read function.
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*Input:
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* standard proc read function param.
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*Output:
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* Return read length.
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********************************************************
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*/
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static s32 goodix_tool_read(char *page, char **start, off_t off, int count,
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int *eof, void *data)
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{
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GTP_DEBUG_FUNC();
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if (cmd_head.wr % 2) {
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return FAIL;
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} else if (!cmd_head.wr) {
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u16 len = 0;
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s16 data_len = 0;
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u16 loc = 0;
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if (cmd_head.flag == 1) {
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if (comfirm() == FAIL) {
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GTP_ERROR("[READ]Comfirm fail!");
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return FAIL;
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}
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} else if (cmd_head.flag == 2) {
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/* Need interrupt! */
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}
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memcpy(cmd_head.data, cmd_head.addr, cmd_head.addr_len);
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GTP_DEBUG("[CMD HEAD DATA] ADDR:0x%02x%02x.", cmd_head.data[0],
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cmd_head.data[1]);
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GTP_DEBUG("[CMD HEAD ADDR] ADDR:0x%02x%02x.", cmd_head.addr[0],
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cmd_head.addr[1]);
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if (cmd_head.delay)
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msleep(cmd_head.delay);
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data_len = cmd_head.data_len;
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while (data_len > 0) {
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if (data_len > DATA_LENGTH)
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len = DATA_LENGTH;
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else
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len = data_len;
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data_len -= DATA_LENGTH;
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if (tool_i2c_read(cmd_head.data, len) <= 0) {
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GTP_ERROR("[READ]Read data failed!");
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return FAIL;
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}
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memcpy(&page[loc], &cmd_head.data[GTP_ADDR_LENGTH],
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len);
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loc += len;
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GTP_DEBUG_ARRAY(&cmd_head.data[GTP_ADDR_LENGTH], len);
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GTP_DEBUG_ARRAY(page, len);
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}
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} else if (cmd_head.wr == 2) {
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/* memcpy(page, "gt8", cmd_head.data_len); */
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/* memcpy(page, "GT818", 5); */
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/* page[5] = 0; */
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GTP_DEBUG("Return ic type:%s len:%d.", page,
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(s32)cmd_head.data_len);
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return cmd_head.data_len;
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/* return sizeof(IC_TYPE_NAME); */
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} else if (cmd_head.wr == 4) {
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page[0] = show_len >> 8;
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page[1] = show_len & 0xff;
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page[2] = total_len >> 8;
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page[3] = total_len & 0xff;
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return cmd_head.data_len;
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} else if (cmd_head.wr == 6) {
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/* Read error code! */
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} else if (cmd_head.wr == 8) { /* Read driver version */
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/* memcpy(page, GTP_DRIVER_VERSION, strlen(GTP_DRIVER_VERSION));
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*/
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s32 tmp_len;
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tmp_len = strlen(GTP_DRIVER_VERSION);
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memcpy(page, GTP_DRIVER_VERSION, tmp_len);
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page[tmp_len] = 0;
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}
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return cmd_head.data_len;
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}
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