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a155-U-u1/kernel-5.10/drivers/input/touchscreen/GT9895/goodix_brl_fwupdate.c
physwizz 99537be4e2 first
2024-03-11 06:53:12 +11:00

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/*
* Goodix Touchscreen Driver
* Copyright (C) 2020 - 2021 Goodix, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be a reference
* to you, when you are integrating the GOODiX's CTP IC into your system,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include "goodix_ts_core.h"
#define BUS_TYPE_SPI 1
#define BUS_TYPE_I2C 0
#define GOODIX_BUS_RETRY_TIMES 3
#define FW_HEADER_SIZE 512
#define FW_SUBSYS_INFO_SIZE 10
#define FW_SUBSYS_INFO_OFFSET 42
#define FW_SUBSYS_MAX_NUM 47
#define ISP_MAX_BUFFERSIZE 4096
#define FW_PID_LEN 8
#define FW_VID_LEN 4
#define FLASH_CMD_LEN 11
#define FW_FILE_CHECKSUM_OFFSET 8
#define CONFIG_DATA_TYPE 4
#define HW_REG_CPU_RUN_FROM 0x10000
#define HOLD_CPU_REG_W 0x0002
#define HOLD_CPU_REG_R 0x2000
#define ESD_KEY_REG 0xCC58
#define FLASH_CMD_TYPE_READ 0xAA
#define FLASH_CMD_TYPE_WRITE 0xBB
#define FLASH_CMD_ACK_CHK_PASS 0xEE
#define FLASH_CMD_ACK_CHK_ERROR 0x33
#define FLASH_CMD_ACK_IDLE 0x11
#define FLASH_CMD_W_STATUS_CHK_PASS 0x22
#define FLASH_CMD_W_STATUS_CHK_FAIL 0x33
#define FLASH_CMD_W_STATUS_ADDR_ERR 0x44
#define FLASH_CMD_W_STATUS_WRITE_ERR 0x55
#define FLASH_CMD_W_STATUS_WRITE_OK 0xEE
struct update_info_t {
unsigned int isp_ram_reg;
unsigned int flash_cmd_reg;
unsigned int isp_buffer_reg;
unsigned int config_data_reg;
unsigned int misctl_reg;
unsigned int watch_dog_reg;
unsigned int config_id_reg;
unsigned int enable_misctl_val;
};
/**
* fw_subsys_info - subsytem firmware information
* @type: sybsystem type
* @size: firmware size
* @flash_addr: flash address
* @data: firmware data
*/
struct fw_subsys_info {
u8 type;
u32 size;
u32 flash_addr;
const u8 *data;
};
/**
* firmware_summary
* @size: fw total length
* @checksum: checksum of fw
* @hw_pid: mask pid string
* @hw_pid: mask vid code
* @fw_pid: fw pid string
* @fw_vid: fw vid code
* @subsys_num: number of fw subsystem
* @chip_type: chip type
* @protocol_ver: firmware packing
* protocol version
* @bus_type: 0 represent I2C, 1 for SPI
* @subsys: sybsystem info
*/
#pragma pack(1)
struct firmware_summary {
u32 size;
u32 checksum;
u8 hw_pid[6];
u8 hw_vid[3];
u8 fw_pid[FW_PID_LEN];
u8 fw_vid[FW_VID_LEN];
u8 subsys_num;
u8 chip_type;
u8 protocol_ver;
u8 bus_type;
u8 flash_protect;
// u8 reserved[8];
struct fw_subsys_info subsys[FW_SUBSYS_MAX_NUM];
};
#pragma pack()
/**
* firmware_data - firmware data structure
* @fw_summary: firmware information
* @firmware: firmware data structure
*/
struct firmware_data {
struct firmware_summary fw_summary;
const struct firmware *firmware;
struct firmware fw;
};
struct config_data {
u8 *data;
int size;
};
#pragma pack(1)
struct goodix_flash_cmd {
union {
struct {
u8 status;
u8 ack;
u8 len;
u8 cmd;
u8 fw_type;
u16 fw_len;
u32 fw_addr;
//u16 checksum;
};
u8 buf[16];
};
};
#pragma pack()
enum update_status {
UPSTA_NOTWORK = 0,
UPSTA_PREPARING,
UPSTA_UPDATING,
UPSTA_SUCCESS,
UPSTA_FAILED
};
enum compare_status {
COMPARE_EQUAL = 0,
COMPARE_NOCODE,
COMPARE_PIDMISMATCH,
COMPARE_FW_NOTEQUAL,
COMPARE_CFG_NOTEQUAL,
};
/**
* fw_update_ctrl - structure used to control the
* firmware update process
* @initialized: struct init state
* @mode: indicate weather reflash config or not, fw data source,
* and run on block mode or not.
* @status: update status
* @progress: indicate the progress of update
* @fw_data: firmware data
* @attr_fwimage: sysfs bin attrs, for storing fw image
* @fw_data_src: firmware data source form sysfs, request or head file
* @kobj: pointer to the sysfs kobject
*/
struct fw_update_ctrl {
struct mutex mutex;
int initialized;
unsigned int cfg_checksum;
unsigned int fw_checksum;
int mode;
enum update_status status;
int spend_time;
struct firmware_data fw_data;
struct goodix_ic_config *ic_config;
struct goodix_ts_core *core_data;
struct update_info_t update_info;
struct bin_attribute attr_fwimage;
struct kobject *kobj;
};
static struct fw_update_ctrl goodix_fw_update_ctrl;
static int goodix_fw_update_reset(int delay)
{
struct goodix_ts_hw_ops *hw_ops;
hw_ops = goodix_fw_update_ctrl.core_data->hw_ops;
return hw_ops->reset(goodix_fw_update_ctrl.core_data, delay);
}
#define SOFT_RESET_REG 0xD808
static int goodix_soft_reset(int delay)
{
struct goodix_ts_hw_ops *hw_ops;
u8 val = 0;
int ret;
hw_ops = goodix_fw_update_ctrl.core_data->hw_ops;
ret = hw_ops->write(goodix_fw_update_ctrl.core_data, SOFT_RESET_REG, &val, 1);
if (ret < 0)
return ret;
sec_delay(delay);
return 0;
}
static int get_fw_version_info(struct goodix_fw_version *fw_version)
{
struct goodix_ts_hw_ops *hw_ops =
goodix_fw_update_ctrl.core_data->hw_ops;
return hw_ops->read_version(goodix_fw_update_ctrl.core_data,
fw_version);
}
static int goodix_reg_write(unsigned int addr,
unsigned char *data, unsigned int len)
{
struct goodix_ts_hw_ops *hw_ops = goodix_fw_update_ctrl.core_data->hw_ops;
return hw_ops->write(goodix_fw_update_ctrl.core_data, addr, data, len);
}
static int goodix_reg_read(unsigned int addr,
unsigned char *data, unsigned int len)
{
struct goodix_ts_hw_ops *hw_ops = goodix_fw_update_ctrl.core_data->hw_ops;
return hw_ops->read(goodix_fw_update_ctrl.core_data, addr, data, len);
}
/**
* goodix_parse_firmware - parse firmware header information
* and subsystem information from firmware data buffer
*
* @fw_data: firmware struct, contains firmware header info
* and firmware data.
* return: 0 - OK, < 0 - error
*/
/* sizeof(length) + sizeof(checksum) */
static int goodix_parse_firmware(struct firmware_data *fw_data)
{
const struct firmware *firmware;
struct firmware_summary *fw_summary;
unsigned int i, fw_offset, info_offset;
u32 checksum;
int subsys_info_offset = FW_SUBSYS_INFO_OFFSET;
int header_size = FW_HEADER_SIZE;
int r = 0;
fw_summary = &fw_data->fw_summary;
/* copy firmware head info */
firmware = &fw_data->fw;
if (firmware->size < subsys_info_offset) {
ts_err("Invalid firmware size:%zu", firmware->size);
r = -EINVAL;
goto err_size;
}
memcpy(fw_summary, firmware->data, sizeof(*fw_summary));
/* check firmware size */
fw_summary->size = le32_to_cpu(fw_summary->size);
if (firmware->size != fw_summary->size + FW_FILE_CHECKSUM_OFFSET) {
ts_err("Bad firmware, size not match, %zu != %d",
firmware->size, fw_summary->size + 6);
r = -EINVAL;
goto err_size;
}
for (i = FW_FILE_CHECKSUM_OFFSET, checksum = 0;
i < firmware->size; i += 2)
checksum += firmware->data[i] + (firmware->data[i+1] << 8);
/* byte order change, and check */
fw_summary->checksum = le32_to_cpu(fw_summary->checksum);
goodix_fw_update_ctrl.fw_checksum = fw_summary->checksum;
ts_info("Firmware checksum:0x%04x", goodix_fw_update_ctrl.fw_checksum +
goodix_fw_update_ctrl.cfg_checksum);
if (checksum != fw_summary->checksum) {
ts_err("Bad firmware, cheksum error");
r = -EINVAL;
goto err_size;
}
if (fw_summary->subsys_num > FW_SUBSYS_MAX_NUM) {
ts_err("Bad firmware, invalid subsys num: %d",
fw_summary->subsys_num);
r = -EINVAL;
goto err_size;
}
/* parse subsystem info */
fw_offset = header_size;
for (i = 0; i < fw_summary->subsys_num; i++) {
info_offset = subsys_info_offset +
i * FW_SUBSYS_INFO_SIZE;
fw_summary->subsys[i].type = firmware->data[info_offset];
fw_summary->subsys[i].size =
le32_to_cpup((__le32 *)&firmware->data[info_offset + 1]);
fw_summary->subsys[i].flash_addr =
le32_to_cpup((__le32 *)&firmware->data[info_offset + 5]);
if (fw_offset > firmware->size) {
ts_err("Sybsys offset exceed Firmware size");
goto err_size;
}
fw_summary->subsys[i].data = firmware->data + fw_offset;
fw_offset += fw_summary->subsys[i].size;
}
ts_info("Firmware package protocol: V%u", fw_summary->protocol_ver);
ts_info("Firmware PID:GT%s", fw_summary->fw_pid);
ts_info("Firmware VID:%*ph", 4, fw_summary->fw_vid);
ts_info("Firmware chip type:0x%02X", fw_summary->chip_type);
ts_info("Firmware bus type:%s",
(fw_summary->bus_type & BUS_TYPE_SPI) ? "SPI" : "I2C");
ts_info("Firmware size:%u", fw_summary->size);
ts_info("Firmware subsystem num:%u", fw_summary->subsys_num);
for (i = 0; i < fw_summary->subsys_num; i++) {
ts_debug("------------------------------------------");
ts_debug("Index:%d", i);
ts_debug("Subsystem type:%02X", fw_summary->subsys[i].type);
ts_debug("Subsystem size:%u", fw_summary->subsys[i].size);
ts_debug("Subsystem flash_addr:%08X",
fw_summary->subsys[i].flash_addr);
ts_debug("Subsystem Ptr:%pK", fw_summary->subsys[i].data);
}
err_size:
return r;
}
/**
* goodix_fw_version_compare - compare the active version with
* firmware file version.
* @fwu_ctrl: firmware information to be compared
* return: 0 equal, < 0 unequal
*/
static int goodix_fw_version_compare(struct fw_update_ctrl *fwu_ctrl)
{
int ret = 0;
struct goodix_fw_version fw_version;
struct firmware_summary *fw_summary = &fwu_ctrl->fw_data.fw_summary;
u32 config_id_reg = goodix_fw_update_ctrl.update_info.config_id_reg;
u32 file_cfg_id;
u32 ic_cfg_id;
/* compare fw_version */
ret = get_fw_version_info(&fw_version);
if (ret)
return -EINVAL;
if (!memcmp(fw_version.rom_pid, GOODIX_NOCODE, 6) ||
!memcmp(fw_version.patch_pid, GOODIX_NOCODE, 6)) {
ts_info("there is no code in the chip");
return COMPARE_NOCODE;
}
if (memcmp(fw_version.patch_pid, fw_summary->fw_pid, FW_PID_LEN)) {
ts_err("Product ID mismatch:%s != %s",
fw_version.patch_pid, fw_summary->fw_pid);
return COMPARE_PIDMISMATCH;
}
ret = memcmp(fw_version.patch_vid, fw_summary->fw_vid, FW_VID_LEN);
if (ret) {
ts_info("active firmware version:%*ph", FW_VID_LEN,
fw_version.patch_vid);
ts_info("firmware file version: %*ph", FW_VID_LEN,
fw_summary->fw_vid);
return COMPARE_FW_NOTEQUAL;
}
ts_info("fw_version equal");
/* compare config id */
if (fwu_ctrl->ic_config && fwu_ctrl->ic_config->len > 0) {
file_cfg_id =
goodix_get_file_config_id(fwu_ctrl->ic_config->data);
goodix_reg_read(config_id_reg,
(u8 *)&ic_cfg_id, sizeof(ic_cfg_id));
if (ic_cfg_id != file_cfg_id) {
ts_info("ic_cfg_id:0x%x != file_cfg_id:0x%x",
ic_cfg_id, file_cfg_id);
return COMPARE_CFG_NOTEQUAL;
}
ts_info("config_id equal");
}
return COMPARE_EQUAL;
}
/**
* goodix_reg_write_confirm - write register and confirm the value
* in the register.
* @dev: pointer to touch device
* @addr: register address
* @data: pointer to data buffer
* @len: data length
* return: 0 write success and confirm ok
* < 0 failed
*/
static int goodix_reg_write_confirm(unsigned int addr,
unsigned char *data, unsigned int len)
{
u8 *cfm = NULL;
u8 cfm_buf[32];
int r, i;
if (len > sizeof(cfm_buf)) {
cfm = kzalloc(len, GFP_KERNEL);
if (!cfm)
return -ENOMEM;
} else {
cfm = &cfm_buf[0];
}
for (i = 0; i < GOODIX_BUS_RETRY_TIMES; i++) {
r = goodix_reg_write(addr, data, len);
if (r < 0)
goto exit;
r = goodix_reg_read(addr, cfm, len);
if (r < 0)
goto exit;
if (memcmp(data, cfm, len)) {
r = -EINVAL;
continue;
} else {
r = 0;
break;
}
}
exit:
if (cfm != &cfm_buf[0])
kfree(cfm);
return r;
}
/**
* goodix_load_isp - load ISP program to device ram
* @dev: pointer to touch device
* @fw_data: firmware data
* return 0 ok, <0 error
*/
static int goodix_load_isp(struct firmware_data *fw_data)
{
struct goodix_fw_version isp_fw_version;
struct fw_subsys_info *fw_isp;
u32 isp_ram_reg = goodix_fw_update_ctrl.update_info.isp_ram_reg;
u8 reg_val[8] = {0x00};
int r;
memset(&isp_fw_version, 0, sizeof(isp_fw_version));
fw_isp = &fw_data->fw_summary.subsys[0];
ts_info("Loading ISP start");
r = goodix_reg_write_confirm(isp_ram_reg,
(u8 *)fw_isp->data, fw_isp->size);
if (r < 0) {
ts_err("Loading ISP error");
return r;
}
ts_info("Success send ISP data");
/* SET BOOT OPTION TO 0X55 */
memset(reg_val, 0x55, 8);
r = goodix_reg_write_confirm(HW_REG_CPU_RUN_FROM, reg_val, 8);
if (r < 0) {
ts_err("Failed set REG_CPU_RUN_FROM flag");
return r;
}
ts_info("Success write [8]0x55 to 0x%x", HW_REG_CPU_RUN_FROM);
if (goodix_soft_reset(100))
ts_err("soft reset abnormal");
/*check isp state */
if (get_fw_version_info(&isp_fw_version)) {
ts_err("failed read isp version");
return -2;
}
ts_info("patch_pid [3]:0x%02X [4]:0x%02X [5]:0x%02X",
isp_fw_version.patch_pid[3], isp_fw_version.patch_pid[4],
isp_fw_version.patch_pid[5]);
if (memcmp(&isp_fw_version.patch_pid[3], "ISP", 3)) {
ts_err("patch id error %c%c%c != %s",
isp_fw_version.patch_pid[3], isp_fw_version.patch_pid[4],
isp_fw_version.patch_pid[5], "ISP");
return -3;
}
ts_info("ISP running successfully");
return 0;
}
/**
* goodix_update_prepare - update prepare, loading ISP program
* and make sure the ISP is running.
* @fwu_ctrl: pointer to fimrware control structure
* return: 0 ok, <0 error
*/
static int goodix_update_prepare(struct fw_update_ctrl *fwu_ctrl)
{
u32 misctl_reg = fwu_ctrl->update_info.misctl_reg;
u32 watch_dog_reg = fwu_ctrl->update_info.watch_dog_reg;
u32 enable_misctl_val = fwu_ctrl->update_info.enable_misctl_val;
u8 reg_val[4] = {0};
u8 temp_buf[64] = {0};
int retry = 20;
int r;
/*reset IC*/
ts_info("firmware update, reset");
if (goodix_fw_update_reset(5))
ts_err("reset abnormal");
retry = 100;
/* Hold cpu*/
do {
reg_val[0] = 0x01;
reg_val[1] = 0x00;
r = goodix_reg_write(HOLD_CPU_REG_W, reg_val, 2);
r |= goodix_reg_read(HOLD_CPU_REG_R, &temp_buf[0], 4);
r |= goodix_reg_read(HOLD_CPU_REG_R, &temp_buf[4], 4);
r |= goodix_reg_read(HOLD_CPU_REG_R, &temp_buf[8], 4);
if (!r && !memcmp(&temp_buf[0], &temp_buf[4], 4) &&
!memcmp(&temp_buf[4], &temp_buf[8], 4) &&
!memcmp(&temp_buf[0], &temp_buf[8], 4)) {
break;
}
sec_delay(1);
ts_info("retry hold cpu %d", retry);
ts_debug("data:%*ph", 12, temp_buf);
} while (--retry);
if (!retry) {
ts_err("Failed to hold CPU, return =%d", r);
return -1;
}
ts_info("Success hold CPU");
/* enable misctl clock */
if (fwu_ctrl->core_data->bus->ic_type == IC_TYPE_BERLIN_D)
goodix_reg_write(misctl_reg, (u8 *)&enable_misctl_val, 4);
else
goodix_reg_write(misctl_reg, (u8 *)&enable_misctl_val, 1);
ts_info("enable misctl clock");
/* disable watch dog */
reg_val[0] = 0x00;
r = goodix_reg_write(watch_dog_reg, reg_val, 1);
ts_info("disable watch dog");
/* load ISP code and run form isp */
r = goodix_load_isp(&fwu_ctrl->fw_data);
if (r < 0)
ts_err("Failed load and run isp");
return r;
}
/* goodix_send_flash_cmd: send command to read or write flash data
* @flash_cmd: command need to send.
*/
static int goodix_send_flash_cmd(struct goodix_flash_cmd *flash_cmd)
{
int i, ret, retry;
struct goodix_flash_cmd tmp_cmd;
u32 flash_cmd_reg = goodix_fw_update_ctrl.update_info.flash_cmd_reg;
ts_info("try send flash cmd:%*ph", (int)sizeof(flash_cmd->buf),
flash_cmd->buf);
memset(tmp_cmd.buf, 0, sizeof(tmp_cmd));
ret = goodix_reg_write(flash_cmd_reg,
flash_cmd->buf, sizeof(flash_cmd->buf));
if (ret) {
ts_err("failed send flash cmd %d", ret);
return ret;
}
retry = 5;
for (i = 0; i < retry; i++) {
ret = goodix_reg_read(flash_cmd_reg,
tmp_cmd.buf, sizeof(tmp_cmd.buf));
if (!ret && tmp_cmd.ack == FLASH_CMD_ACK_CHK_PASS)
break;
sec_delay(5);
ts_info("flash cmd ack error retry %d, ack 0x%x, ret %d",
i, tmp_cmd.ack, ret);
}
if (tmp_cmd.ack != FLASH_CMD_ACK_CHK_PASS) {
ts_err("flash cmd ack error, ack 0x%x, ret %d",
tmp_cmd.ack, ret);
ts_err("data:%*ph", (int)sizeof(tmp_cmd.buf), tmp_cmd.buf);
return -EINVAL;
}
ts_info("flash cmd ack check pass");
sec_delay(80);
retry = 20;
for (i = 0; i < retry; i++) {
ret = goodix_reg_read(flash_cmd_reg,
tmp_cmd.buf, sizeof(tmp_cmd.buf));
if (!ret && tmp_cmd.ack == FLASH_CMD_ACK_CHK_PASS &&
tmp_cmd.status == FLASH_CMD_W_STATUS_WRITE_OK) {
ts_info("flash status check pass");
return 0;
}
ts_info("flash cmd status not ready, retry %d, ack 0x%x, status 0x%x, ret %d",
i, tmp_cmd.ack, tmp_cmd.status, ret);
sec_delay(20);
}
ts_err("flash cmd status error %d, ack 0x%x, status 0x%x, ret %d",
i, tmp_cmd.ack, tmp_cmd.status, ret);
if (ret) {
ts_info("reason: bus or paltform error");
return -EINVAL;
}
switch (tmp_cmd.status) {
case FLASH_CMD_W_STATUS_CHK_PASS:
ts_err("data check pass, but failed get follow-up results");
return -EFAULT;
case FLASH_CMD_W_STATUS_CHK_FAIL:
ts_err("data check failed, please retry");
return -EAGAIN;
case FLASH_CMD_W_STATUS_ADDR_ERR:
ts_err("flash target addr error, please check");
return -EFAULT;
case FLASH_CMD_W_STATUS_WRITE_ERR:
ts_err("flash data write err, please retry");
return -EAGAIN;
default:
ts_err("unknown status");
return -EFAULT;
}
}
static int goodix_flash_package(u8 subsys_type, u8 *pkg,
u32 flash_addr, u16 pkg_len)
{
int ret, retry;
struct goodix_flash_cmd flash_cmd;
u32 isp_buffer_reg = goodix_fw_update_ctrl.update_info.isp_buffer_reg;
retry = 2;
do {
ret = goodix_reg_write(isp_buffer_reg, pkg, pkg_len);
if (ret < 0) {
ts_err("Failed to write firmware packet");
return ret;
}
flash_cmd.status = 0;
flash_cmd.ack = 0;
flash_cmd.len = FLASH_CMD_LEN;
flash_cmd.cmd = FLASH_CMD_TYPE_WRITE;
flash_cmd.fw_type = subsys_type;
flash_cmd.fw_len = cpu_to_le16(pkg_len);
flash_cmd.fw_addr = cpu_to_le32(flash_addr);
goodix_append_checksum(&(flash_cmd.buf[2]),
9, CHECKSUM_MODE_U8_LE);
ret = goodix_send_flash_cmd(&flash_cmd);
if (!ret) {
ts_info("success write package to 0x%x, len %d",
flash_addr, pkg_len - 4);
return 0;
}
} while (ret == -EAGAIN && --retry);
return ret;
}
/**
* goodix_flash_subsystem - flash subsystem firmware,
* Main flow of flashing firmware.
* Each firmware subsystem is divided into several
* packets, the max size of packet is limited to
* @{ISP_MAX_BUFFERSIZE}
* @dev: pointer to touch device
* @subsys: subsystem information
* return: 0 ok, < 0 error
*/
static int goodix_flash_subsystem(struct fw_subsys_info *subsys)
{
u32 data_size, offset;
u32 total_size;
//TODO: confirm flash addr ,<< 8??
u32 subsys_base_addr = subsys->flash_addr;
u8 *fw_packet = NULL;
int r = 0;
/*
* if bus(i2c/spi) error occued, then exit, we will do
* hardware reset and re-prepare ISP and then retry
* flashing
*/
total_size = subsys->size;
fw_packet = kzalloc(ISP_MAX_BUFFERSIZE + 4, GFP_KERNEL);
if (!fw_packet) {
ts_err("Failed alloc memory");
return -EINVAL;
}
offset = 0;
while (total_size > 0) {
data_size = total_size > ISP_MAX_BUFFERSIZE ?
ISP_MAX_BUFFERSIZE : total_size;
ts_info("Flash firmware to %08x,size:%u bytes",
subsys_base_addr + offset, data_size);
memcpy(fw_packet, &subsys->data[offset], data_size);
/* set checksum for package data */
goodix_append_checksum(fw_packet,
data_size, CHECKSUM_MODE_U16_LE);
r = goodix_flash_package(subsys->type, fw_packet,
subsys_base_addr + offset, data_size + 4);
if (r) {
ts_err("failed flash to %08x,size:%u bytes",
subsys_base_addr + offset, data_size);
break;
}
offset += data_size;
total_size -= data_size;
} /* end while */
kfree(fw_packet);
return r;
}
/**
* goodix_flash_firmware - flash firmware
* @dev: pointer to touch device
* @fw_data: firmware data
* return: 0 ok, < 0 error
*/
static int goodix_flash_firmware(struct fw_update_ctrl *fw_ctrl)
{
struct firmware_data *fw_data = &fw_ctrl->fw_data;
struct firmware_summary *fw_summary;
struct fw_subsys_info *fw_x;
struct fw_subsys_info subsys_cfg = {0};
u32 config_data_reg = fw_ctrl->update_info.config_data_reg;
int retry = GOODIX_BUS_RETRY_TIMES;
int i, r = 0, fw_num;
/* start from subsystem 1,
* subsystem 0 is the ISP program
*/
fw_summary = &fw_data->fw_summary;
fw_num = fw_summary->subsys_num;
/* flash config data first if we have */
if (fw_ctrl->ic_config && fw_ctrl->ic_config->len) {
subsys_cfg.data = fw_ctrl->ic_config->data;
subsys_cfg.size = fw_ctrl->ic_config->len;
subsys_cfg.flash_addr = config_data_reg;
subsys_cfg.type = CONFIG_DATA_TYPE;
r = goodix_flash_subsystem(&subsys_cfg);
if (r) {
ts_err("failed flash config with ISP, %d", r);
return r;
}
ts_info("success flash config with ISP");
}
for (i = 1; i < fw_num && retry;) {
ts_info("--- Start to flash subsystem[%d] ---", i);
fw_x = &fw_summary->subsys[i];
r = goodix_flash_subsystem(fw_x);
if (r == 0) {
ts_info("--- End flash subsystem[%d]: OK ---", i);
i++;
} else if (r == -EAGAIN) {
retry--;
ts_err("--- End flash subsystem%d: Fail, errno:%d, retry:%d ---",
i, r, GOODIX_BUS_RETRY_TIMES - retry);
} else if (r < 0) { /* bus error */
ts_err("--- End flash subsystem%d: Fatal error:%d exit ---",
i, r);
goto exit_flash;
}
}
exit_flash:
return r;
}
/**
* goodix_update_finish - update finished, FREE resource
* and reset flags---
* @fwu_ctrl: pointer to fw_update_ctrl structrue
* return: 0 ok, < 0 error
*/
static int goodix_update_finish(struct fw_update_ctrl *fwu_ctrl)
{
struct goodix_ts_cmd temp_cmd;
uint32_t total_checksum = fwu_ctrl->cfg_checksum + fwu_ctrl->fw_checksum;
int ret;
if (goodix_fw_update_reset(100))
ts_err("reset abnormal");
/* write total checksum to flash */
temp_cmd.len = 8;
temp_cmd.cmd = 0xF3;
temp_cmd.data[0] = total_checksum & 0xFF;
temp_cmd.data[1] = (total_checksum >> 8) & 0xFF;
temp_cmd.data[2] = (total_checksum >> 16) & 0xFF;
temp_cmd.data[3] = (total_checksum >> 24) & 0xFF;
ts_info("goodix_update_finish : write checksum = 0x%X", total_checksum);
ret = fwu_ctrl->core_data->hw_ops->send_cmd(fwu_ctrl->core_data, &temp_cmd);
if (ret < 0)
ts_err("failed write total checksum into flash");
ret = goodix_fw_version_compare(fwu_ctrl);
if (ret == COMPARE_EQUAL || ret == COMPARE_CFG_NOTEQUAL)
return 0;
return -EINVAL;
}
/**
* goodix_fw_update_proc - firmware update process, the entry of
* firmware update flow
* @fwu_ctrl: firmware control
* return: = 0 update ok, < 0 error or NO_NEED_UPDATE
*/
int goodix_fw_update_proc(struct fw_update_ctrl *fwu_ctrl)
{
#define FW_UPDATE_RETRY 2
int retry0;
int retry1 = FW_UPDATE_RETRY;
int ret = 0;
ret = goodix_parse_firmware(&fwu_ctrl->fw_data);
if (ret < 0)
return ret;
start_update:
fwu_ctrl->status = UPSTA_PREPARING;
retry0 = FW_UPDATE_RETRY;
do {
ret = goodix_update_prepare(fwu_ctrl);
if (ret) {
ts_err("failed prepare ISP, retry %d", FW_UPDATE_RETRY - retry0);
}
} while (ret && --retry0 > 0);
if (ret) {
ts_err("Failed to prepare ISP, exit update:%d", ret);
return ret;
}
/* progress: 20%~100% */
fwu_ctrl->status = UPSTA_UPDATING;
ret = goodix_flash_firmware(fwu_ctrl);
if (ret)
ts_err("flash fw data enter error, ret:%d", ret);
else
ts_info("flash fw data success, need check version");
ret = goodix_update_finish(fwu_ctrl);
if (ret && --retry1 > 0) {
ts_err("update failed retry:%d", FW_UPDATE_RETRY - retry1);
goto start_update;
}
if (!ret)
ts_info("Firmware update successfully");
else
ts_err("Firmware update failed, ret:%d", ret);
return ret;
}
/**
* goodix_request_firmware - request firmware data from user space
*
* @fw_data: firmware struct, contains firmware header info
* and firmware data pointer.
* return: 0 - OK, < 0 - error
*/
static int goodix_request_firmware(struct firmware_data *fw_data, struct fw_update_ctrl *fwu_ctrl)
{
int cfgPackageLen;
int fwPackageLen;
if (!fw_data->firmware) {
ts_err("firmware is null");
return -EINVAL;
}
cfgPackageLen = be32_to_cpup((__be32 *)fw_data->firmware->data) + 6;
if (fw_data->firmware->size <= (cfgPackageLen + 16)) {
ts_err("current firmware does not contain goodix fw");
return -EINVAL;
}
fwu_ctrl->cfg_checksum = be16_to_cpup((__be16 *)&fw_data->firmware->data[4]);
if (!(fw_data->firmware->data[cfgPackageLen + 0] == 'G' &&
fw_data->firmware->data[cfgPackageLen + 1] == 'X' &&
fw_data->firmware->data[cfgPackageLen + 2] == 'F' &&
fw_data->firmware->data[cfgPackageLen + 3] == 'W')) {
ts_err("can't find fw package");
ts_err("Data type:%c%c%c%c != GXFW",
fw_data->firmware->data[cfgPackageLen + 0],
fw_data->firmware->data[cfgPackageLen + 1],
fw_data->firmware->data[cfgPackageLen + 2],
fw_data->firmware->data[cfgPackageLen + 3]);
return -EINVAL;
}
fwPackageLen = be32_to_cpup((__be32 *)&fw_data->firmware->data[cfgPackageLen + 8]);
ts_info("firmware package len:%d", fwPackageLen);
if ((fwPackageLen + 16 + cfgPackageLen) > fw_data->firmware->size) {
ts_err("bad firmware, need len[%d] != actual len[%d]",
fwPackageLen + 16 + cfgPackageLen, (int)fw_data->firmware->size);
return -EINVAL;
}
fw_data->fw.data = fw_data->firmware->data + cfgPackageLen + 16;
fw_data->fw.size = fwPackageLen;
ts_info("Firmware image is ready");
return 0;
}
/**
* relase firmware resources
*
*/
static inline void goodix_release_firmware(struct firmware_data *fw_data)
{
if (fw_data->firmware) {
fw_data->firmware = NULL;
memset(&fw_data->fw, 0, sizeof(fw_data->fw));
}
}
static int goodix_fw_update_thread(void *data)
{
struct fw_update_ctrl *fwu_ctrl = data;
ktime_t start, end;
int r = -EINVAL;
start = ktime_get();
fwu_ctrl->spend_time = 0;
fwu_ctrl->status = UPSTA_NOTWORK;
mutex_lock(&fwu_ctrl->mutex);
if (fwu_ctrl->mode & UPDATE_MODE_SRC_REQUEST) {
ts_info("Firmware request update starts");
r = goodix_request_firmware(&fwu_ctrl->fw_data, fwu_ctrl);
if (r < 0)
goto out;
} else if (fwu_ctrl->mode & UPDATE_MODE_SRC_SYSFS) {
if (!fwu_ctrl->fw_data.firmware) {
ts_err("Invalid firmware from sysfs");
r = -EINVAL;
goto out;
}
} else {
ts_err("unknown update mode 0x%x", fwu_ctrl->mode);
r = -EINVAL;
goto out;
}
ts_debug("notify update start");
goodix_ts_blocking_notify(NOTIFY_FWUPDATE_START, NULL);
/* ready to update */
ts_debug("start update proc");
r = goodix_fw_update_proc(fwu_ctrl);
/* clean */
if (fwu_ctrl->mode & UPDATE_MODE_SRC_HEAD) {
kfree(fwu_ctrl->fw_data.firmware);
fwu_ctrl->fw_data.firmware = NULL;
} else if (fwu_ctrl->mode & UPDATE_MODE_SRC_REQUEST) {
goodix_release_firmware(&fwu_ctrl->fw_data);
}
out:
fwu_ctrl->mode = UPDATE_MODE_DEFAULT;
mutex_unlock(&fwu_ctrl->mutex);
if (r) {
ts_err("fw update failed, %d", r);
fwu_ctrl->status = UPSTA_FAILED;
goodix_ts_blocking_notify(NOTIFY_FWUPDATE_FAILED, NULL);
} else {
ts_info("fw update success");
fwu_ctrl->status = UPSTA_SUCCESS;
goodix_ts_blocking_notify(NOTIFY_FWUPDATE_SUCCESS, NULL);
}
end = ktime_get();
fwu_ctrl->spend_time = ktime_to_ms(ktime_sub(end, start));
ts_info("spend_time: %dms", fwu_ctrl->spend_time);
return r;
}
int goodix_do_fw_update(struct goodix_ic_config *ic_config, int mode)
{
struct task_struct *fwu_thrd;
struct fw_update_ctrl *fwu_ctrl = &goodix_fw_update_ctrl;
int ret;
if (!fwu_ctrl->initialized) {
ts_err("fw mode uninit");
return -EINVAL;
}
fwu_ctrl->mode = mode;
fwu_ctrl->ic_config = ic_config;
ts_debug("fw update mode 0x%x", mode);
if (fwu_ctrl->mode & UPDATE_MODE_BLOCK) {
ret = goodix_fw_update_thread(fwu_ctrl);
ts_info("fw update return %d", ret);
return ret;
}
/* create and run update thread */
fwu_thrd = kthread_run(goodix_fw_update_thread,
fwu_ctrl, "goodix-fwu");
if (IS_ERR_OR_NULL(fwu_thrd)) {
ts_err("Failed to create update thread:%ld",
PTR_ERR(fwu_thrd));
return -EFAULT;
}
ts_info("success create fw update thread");
return 0;
}
int goodix_fw_update_init(struct goodix_ts_core *core_data,
const struct firmware *firmware)
{
if (!core_data || !core_data->hw_ops) {
ts_err("core_data && hw_ops cann't be null");
return -ENODEV;
}
if (!firmware) {
ts_err("firmware is NULL");
return -EINVAL;
}
if (goodix_fw_update_ctrl.initialized == 0)
mutex_init(&goodix_fw_update_ctrl.mutex);
goodix_fw_update_ctrl.core_data = core_data;
goodix_fw_update_ctrl.mode = 0;
goodix_fw_update_ctrl.fw_data.firmware = firmware;
goodix_fw_update_ctrl.update_info.isp_ram_reg = core_data->isp_ram_reg;
goodix_fw_update_ctrl.update_info.flash_cmd_reg = core_data->flash_cmd_reg;
goodix_fw_update_ctrl.update_info.isp_buffer_reg = core_data->isp_buffer_reg;
goodix_fw_update_ctrl.update_info.config_data_reg = core_data->config_data_reg;
goodix_fw_update_ctrl.update_info.misctl_reg = core_data->misctl_reg;
goodix_fw_update_ctrl.update_info.watch_dog_reg = core_data->watch_dog_reg;
goodix_fw_update_ctrl.update_info.config_id_reg = core_data->config_id_reg;
goodix_fw_update_ctrl.update_info.enable_misctl_val = core_data->enable_misctl_val;
goodix_fw_update_ctrl.initialized = 1;
return 0;
}
void goodix_fw_update_uninit(void)
{
if (!goodix_fw_update_ctrl.initialized)
return;
mutex_lock(&goodix_fw_update_ctrl.mutex);
goodix_fw_update_ctrl.initialized = 0;
mutex_unlock(&goodix_fw_update_ctrl.mutex);
mutex_destroy(&goodix_fw_update_ctrl.mutex);
}
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