523 lines
12 KiB
C
523 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2014 Goodix Technology.
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*/
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#include <linux/delay.h>
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#include <linux/uaccess.h>
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#include <linux/proc_fs.h>
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#include <generated/utsrelease.h>
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#include "gt1x_tpd_common.h"
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static ssize_t gt1x_tool_read(struct file *filp, char __user *buffer,
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size_t count, loff_t *ppos);
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static ssize_t gt1x_tool_write(struct file *filp, const char *buffer,
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size_t count, loff_t *ppos);
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static s32 gt1x_tool_release(struct inode *inode, struct file *filp);
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static s32 gt1x_tool_open(struct inode *inode, struct file *file);
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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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static DEFINE_MUTEX(rw_mutex);
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s32 DATA_LENGTH;
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s8 IC_TYPE[16] = "GT9XX";
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#define UPDATE_FUNCTIONS
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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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static char procname[20] = { 0 };
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static struct proc_dir_entry *gt1x_tool_proc_entry;
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static const struct file_operations gt1x_tool_fops = {
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.read = gt1x_tool_read,
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.write = gt1x_tool_write,
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.open = gt1x_tool_open,
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.release = gt1x_tool_release,
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.owner = THIS_MODULE,
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};
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static void set_tool_node_name(char *procname)
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{
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int v0 = 0, v1 = 0, v2 = 0;
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int ret;
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ret = sscanf(UTS_RELEASE, "%d.%d.%d", &v0, &v1, &v2);
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sprintf(procname, "gmnode%02d%02d%02d", v0, v1, v2);
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}
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int gt1x_init_tool_node(void)
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{
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memset(&cmd_head, 0, sizeof(cmd_head));
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/*if the first operation is read, will return fail.*/
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cmd_head.wr = 1;
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cmd_head.data = kzalloc(DATA_LENGTH_UINT, GFP_KERNEL);
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if (cmd_head.data == NULL) {
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GTP_ERROR("Apply for memory failed.");
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return -1;
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}
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GTP_INFO("Applied memory size:%d.", DATA_LENGTH_UINT);
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DATA_LENGTH = DATA_LENGTH_UINT - GTP_ADDR_LENGTH;
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set_tool_node_name(procname);
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gt1x_tool_proc_entry =
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proc_create(procname, 0664, NULL, >1x_tool_fops);
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if (gt1x_tool_proc_entry == NULL) {
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GTP_ERROR("Couldn't create proc entry!");
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return -1;
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}
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GTP_INFO("Create proc entry success!");
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return 0;
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}
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void gt1x_deinit_tool_node(void)
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{
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remove_proc_entry(procname, NULL);
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kfree(cmd_head.data);
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cmd_head.data = NULL;
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}
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static s32 tool_i2c_read(u8 *buf, u16 len)
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{
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u16 addr = (buf[0] << 8) + buf[1];
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if (!gt1x_i2c_read(addr, &buf[2], len))
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return 1;
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return -1;
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}
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static s32 tool_i2c_write(u8 *buf, u16 len)
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{
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u16 addr = (buf[0] << 8) + buf[1];
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if (!gt1x_i2c_write(addr, &buf[2], len - 2))
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return 1;
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return -1;
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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.",
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src, dst, (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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*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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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, 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 -1;
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}
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if (true == relation(buf[GTP_ADDR_LENGTH],
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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 -1;
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}
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return 0;
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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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static ssize_t gt1x_tool_write(struct file *filp, const char __user *buff,
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size_t len, loff_t *data)
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{
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u64 ret = 0;
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u8 *pre_data_p;
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u8 *post_data_p;
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GTP_DEBUG_FUNC();
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mutex_lock(&rw_mutex);
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pre_data_p = cmd_head.data;
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ret = copy_from_user(&cmd_head, buff, CMD_HEAD_LENGTH);
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if (ret)
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GTP_ERROR("copy_from_user failed.");
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post_data_p = cmd_head.data;
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if (pre_data_p != post_data_p) {
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GTP_ERROR("pointer is overwritten! %p, %p, %p, %p, %dx\n",
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pre_data_p, post_data_p,
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&cmd_head, &cmd_head.data, (int)CMD_HEAD_LENGTH);
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}
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GTP_DEBUG("wr :0x%02x.", cmd_head.wr);
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/*
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* GTP_DEBUG("flag:0x%02x.", cmd_head.flag);
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* GTP_DEBUG("flag addr:0x%02x%02x.", cmd_head.flag_addr[0],
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* cmd_head.flag_addr[1]);
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* GTP_DEBUG("flag val:0x%02x.", cmd_head.flag_val);
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* GTP_DEBUG("flag rel:0x%02x.", cmd_head.flag_relation);
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* GTP_DEBUG("circle :%d.", (s32)cmd_head.circle);
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* GTP_DEBUG("times :%d.", (s32)cmd_head.times);
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* GTP_DEBUG("retry :%d.", (s32)cmd_head.retry);
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* GTP_DEBUG("delay :%d.", (s32)cmd_head.delay);
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* GTP_DEBUG("data len:%d.", (s32)cmd_head.data_len);
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* GTP_DEBUG("addr len:%d.", (s32)cmd_head.addr_len);
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* GTP_DEBUG("addr:0x%02x%02x.", cmd_head.addr[0], cmd_head.addr[1]);
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* GTP_DEBUG("len:%d.", (s32)len);
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* GTP_DEBUG("buf[20]:0x%02x.", buff[CMD_HEAD_LENGTH]);
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*/
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GTP_DEBUG_ARRAY((u8 *) cmd_head.data, cmd_head.data_len);
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if (cmd_head.data_len > DATA_LENGTH)
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cmd_head.data_len = DATA_LENGTH;
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if (cmd_head.wr == 1) {
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u16 addr, data_len, pos;
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if (cmd_head.flag == 1) {
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if (comfirm()) {
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GTP_ERROR("[WRITE]Comfirm fail!");
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ret = -1;
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goto out;
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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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addr = (cmd_head.addr[0] << 8) + cmd_head.addr[1];
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data_len = cmd_head.data_len;
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pos = 0;
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while (data_len > 0) {
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len = data_len > DATA_LENGTH ? DATA_LENGTH : data_len;
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ret = copy_from_user(&cmd_head.data[GTP_ADDR_LENGTH],
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&buff[CMD_HEAD_LENGTH + pos],
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len);
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if (ret) {
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GTP_ERROR("[WRITE]copy_from_user failed.");
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ret = -1;
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goto out;
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}
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cmd_head.data[0] = ((addr >> 8) & 0xFF);
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cmd_head.data[1] = (addr & 0xFF);
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GTP_DEBUG_ARRAY(cmd_head.data, len + GTP_ADDR_LENGTH);
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if (tool_i2c_write(cmd_head.data,
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len + GTP_ADDR_LENGTH) <= 0) {
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GTP_ERROR("[WRITE]Write data failed!");
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ret = -1;
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goto out;
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}
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addr += len;
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pos += len;
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data_len -= len;
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}
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if (cmd_head.delay)
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msleep(cmd_head.delay);
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mutex_unlock(&rw_mutex);
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return cmd_head.data_len + CMD_HEAD_LENGTH;
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} else if (cmd_head.wr == 3) { /*gt1x unused*/
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cmd_head.data_len =
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cmd_head.data_len > sizeof(IC_TYPE) ?
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sizeof(IC_TYPE) : cmd_head.data_len;
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memcpy(IC_TYPE, cmd_head.data, cmd_head.data_len);
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ret = cmd_head.data_len + CMD_HEAD_LENGTH;
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goto out;
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} else if (cmd_head.wr == 5) {
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/*memcpy(IC_TYPE, cmd_head.data, cmd_head.data_len);*/
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mutex_unlock(&rw_mutex);
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return cmd_head.data_len + CMD_HEAD_LENGTH;
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} else if (cmd_head.wr == 7) { /*disable irq!*/
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gt1x_irq_disable();
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#ifdef CONFIG_GTP_ESD_PROTECT
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gt1x_esd_switch(SWITCH_OFF);
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#endif
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ret = CMD_HEAD_LENGTH;
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goto out;
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} else if (cmd_head.wr == 9) { /*enable irq!*/
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gt1x_irq_enable();
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#ifdef CONFIG_GTP_ESD_PROTECT
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gt1x_esd_switch(SWITCH_ON);
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#endif
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ret = CMD_HEAD_LENGTH;
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goto out;
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} else if (cmd_head.wr == 17) {
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ret = copy_from_user(&cmd_head.data[GTP_ADDR_LENGTH],
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&buff[CMD_HEAD_LENGTH],
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cmd_head.data_len);
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if (ret) {
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GTP_DEBUG("copy_from_user failed.");
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ret = -1;
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goto out;
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}
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if (cmd_head.data[GTP_ADDR_LENGTH]) {
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GTP_DEBUG("gtp enter rawdiff.");
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gt1x_rawdiff_mode = true;
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} else {
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gt1x_rawdiff_mode = false;
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GTP_DEBUG("gtp leave rawdiff.");
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}
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ret = CMD_HEAD_LENGTH;
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goto out;
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} else if (cmd_head.wr == 11) {
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gt1x_enter_update_mode();
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} else if (cmd_head.wr == 13) {
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gt1x_leave_update_mode();
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} else if (cmd_head.wr == 15) {
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memset(cmd_head.data, 0, cmd_head.data_len + 1);
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ret = copy_from_user(cmd_head.data,
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&buff[CMD_HEAD_LENGTH], cmd_head.data_len);
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if (ret) {
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GTP_DEBUG("copy_from_user failed.");
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ret = -1;
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goto out;
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}
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GTP_DEBUG("update firmware, filename: %s", cmd_head.data);
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ret = gt1x_update_firmware((void *)cmd_head.data);
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if (ret) {
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ret = -1;
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goto out;
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}
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}
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ret = CMD_HEAD_LENGTH;
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out:
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mutex_unlock(&rw_mutex);
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return ret;
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}
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static u8 devicecount;
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static s32 gt1x_tool_open(struct inode *inode, struct file *file)
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{
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GTP_DEBUG("gt1x_tool_proc open start.");
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if (devicecount > 0)
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return -ERESTARTSYS;
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GTP_DEBUG("gt1x_tool_proc open success!");
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devicecount++;
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return 0;
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}
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static s32 gt1x_tool_release(struct inode *inode, struct file *filp)
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{
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GTP_DEBUG("gt1x_tool_proc release start.");
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devicecount--;
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GTP_DEBUG("gt1x_tool_proc release!");
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return 0;
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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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static ssize_t gt1x_tool_read(struct file *filp, char __user *buffer,
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size_t count, loff_t *ppos)
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{
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u64 ret;
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GTP_DEBUG_FUNC();
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if (*ppos) {
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GTP_DEBUG("[PARAM]size: %d, *ppos: %d", (int)count, (int)*ppos);
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*ppos = 0;
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return 0;
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}
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if (cmd_head.data_len > DATA_LENGTH)
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cmd_head.data_len = DATA_LENGTH;
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mutex_lock(&rw_mutex);
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if (cmd_head.wr % 2) {
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GTP_ERROR("[READ] invaild operator fail!");
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ret = -1;
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goto out;
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} else if (!cmd_head.wr) {
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u16 addr, data_len, len, loc;
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if (cmd_head.flag == 1) {
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if (comfirm()) {
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GTP_ERROR("[READ]Comfirm fail!");
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ret = -1;
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goto out;
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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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addr = (cmd_head.addr[0] << 8) + cmd_head.addr[1];
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data_len = cmd_head.data_len;
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loc = 0;
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GTP_DEBUG("[READ] ADDR:0x%04X.", addr);
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GTP_DEBUG("[READ] Length: %d", data_len);
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if (cmd_head.delay)
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msleep(cmd_head.delay);
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while (data_len > 0) {
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len = data_len > DATA_LENGTH ? DATA_LENGTH : data_len;
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cmd_head.data[0] = (addr >> 8) & 0xFF;
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cmd_head.data[1] = (addr & 0xFF);
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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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ret = -1;
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goto out;
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}
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if (copy_to_user(&buffer[loc],
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&cmd_head.data[GTP_ADDR_LENGTH],
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len)) {
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GTP_ERROR("[READ]copy_to_user failed!");
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ret = -1;
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goto out;
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}
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data_len -= len;
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addr += 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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}
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*ppos += cmd_head.data_len;
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ret = cmd_head.data_len;
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goto out;
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} else if (cmd_head.wr == 2) {
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GTP_DEBUG("Return ic type:%s len:%d.",
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buffer, (s32) cmd_head.data_len);
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ret = -1;
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goto out;
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} else if (cmd_head.wr == 4) {
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u8 val[4];
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val[0] = update_info.progress >> 8;
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val[1] = update_info.progress & 0xff;
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val[2] = update_info.max_progress >> 8;
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val[3] = update_info.max_progress & 0xff;
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if (copy_to_user(buffer, val, sizeof(val))) {
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GTP_ERROR("[READ]copy_to_user failed!");
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ret = cmd_head.data_len;
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goto out;
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}
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*ppos += 4;
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ret = 4;
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goto out;
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} else if (cmd_head.wr == 6) {
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/*Read error code!*/
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ret = -1;
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goto out;
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} else if (cmd_head.wr == 8) { /*Read driver version*/
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s32 tmp_len = strlen(GTP_DRIVER_VERSION) + 1;
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char *drv_ver = NULL;
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if (count < tmp_len) {
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ret = -1;
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goto out;
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}
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drv_ver = kzalloc(tmp_len, GFP_ATOMIC);
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if (drv_ver == NULL) {
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GTP_ERROR("Allocate %d buffer fail\n", tmp_len);
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ret = -1;
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goto out;
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}
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strncpy(drv_ver, GTP_DRIVER_VERSION,
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strlen(GTP_DRIVER_VERSION));
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drv_ver[strlen(GTP_DRIVER_VERSION)] = 0;
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if (copy_to_user(buffer, drv_ver, tmp_len)) {
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GTP_ERROR("[READ]copy_to_user failed");
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kfree(drv_ver);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
*ppos += tmp_len;
|
|
kfree(drv_ver);
|
|
mutex_unlock(&rw_mutex);
|
|
return tmp_len;
|
|
}
|
|
*ppos += cmd_head.data_len;
|
|
ret = cmd_head.data_len;
|
|
out:
|
|
mutex_unlock(&rw_mutex);
|
|
return ret;
|
|
}
|
|
|
|
void gt1x_tool_exit(void)
|
|
{
|
|
remove_proc_entry(procname, NULL);
|
|
}
|
|
EXPORT_SYMBOL_GPL(gt1x_tool_exit);
|