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/*
* mms100_ISC_download.c - Touchscreen driver for Melfas MMS-series touch controllers
*
* Copyright (C) 2011 Google Inc.
* Author: Dima Zavin <dima@android.com>
* Simon Wilson <simonwilson@google.com>
*
* ISP reflashing code based on original code from Melfas.
*
*
* 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.
*
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/firmware.h>
#include <linux/completion.h>
#include <asm/unaligned.h>
#include "tpd.h"
#include "mms200_ts.h"
extern struct i2c_client *melfas_i2c_client;
extern void mms_reboot(void);
extern int melfas_check_firmware(struct i2c_client *client);
extern int melfas_i2c_DMA_RW_isc(struct i2c_client *client,int rw,
U8 *rxbuf, U16 rlen,
U8 *txbuf, U16 tlen);
bool isc_entered = false;
static int mms_isc_transfer_cmd(struct i2c_client *client, int cmd)
{
int retval;
struct isc_packet pkt = { ISC_ADDR, cmd };
struct i2c_msg msg = {
.addr = client->addr,
.flags = 0,
.len = sizeof(struct isc_packet),
.buf = (u8 *)&pkt,
};
retval = i2c_transfer(client->adapter, &msg, 1);
TPD_DMESG("mms_isc_transfer_cmd, retval = %d\n",retval);
return retval;
}
static int mms_isc_enter(struct i2c_client *client)
{
int retval;
isc_entered = true;
retval = i2c_smbus_write_byte_data(client, MMS_CMD_ENTER_ISC, true);
return retval;
}
static int mms_isc_exit(struct i2c_client *client)
{
isc_entered = false;
return mms_isc_transfer_cmd(client, ISC_CMD_EXIT);
}
static int mms_isc_read_status(struct i2c_client *client, u32 val)
{
u8 cmd = ISC_CMD_READ_STATUS;
u32 result = 0;
int cnt = 100;
int ret = 0;
do {
ret = i2c_smbus_read_i2c_block_data(client, cmd, 4, (u8 *)&result);
if (result == val)
break;
msleep(1);
} while (--cnt);
if (!cnt) {
TPD_DMESG("status read fail. cnt : %d, val : 0x%x != 0x%x\n",
cnt, result, val);
}
return ret;
}
static int mms_isc_erase_page(struct i2c_client *client, int page)
{
return mms_isc_transfer_cmd(client, ISC_CMD_PAGE_ERASE | page) ||
mms_isc_read_status(client, ISC_PAGE_ERASE_DONE | ISC_PAGE_ERASE_ENTER | page);
}
static int mms_flash_section(struct i2c_client *client, struct mms_fw_img *img, const u8 *data,
struct mms_ext_hdr *ext)
{
struct isc_packet *isc_packet;
int ret;
int page, i;
struct i2c_msg msg[2] = {
{
.addr = client->addr | I2C_DMA_FLAG,
.flags = 0,
}, {
.addr = client->addr | I2C_DMA_FLAG,
.flags = I2C_M_RD,
.len = ISC_XFER_LEN,
},
};
int ptr = img->offset;
TPD_DMESG("mms_flash_section\n");
isc_packet = kzalloc(sizeof(*isc_packet) + ISC_XFER_LEN, GFP_KERNEL);
isc_packet->cmd = ISC_ADDR;
msg[0].buf = (u8 *)isc_packet;
msg[1].buf = kzalloc(ISC_XFER_LEN, GFP_KERNEL);
for (page = img->start_page; page <= img->end_page; page++)
{
if (ext->data[page] & EXT_INFO_ERASE)
ret = mms_isc_erase_page(client, page);
if (ret < 0)
{
TPD_DMESG("MMS-ISC, mms_isc_erase_page,ret = %d, Line: %d, Failed\n",ret, __LINE__);
goto i2c_err;
}
else
TPD_DMESG("MMS-ISC, mms_isc_erase_page, %d, Sucess\n",__LINE__);
if (!(ext->data[page] & EXT_INFO_WRITE))
{
ptr += MMS_FLASH_PAGE_SZ;
continue;
}
for (i = 0; i < ISC_BLOCK_NUM; i++, ptr += ISC_XFER_LEN)
{
/* flash firmware */
u32 tmp = page * 256 + i * (ISC_XFER_LEN / 4);
put_unaligned_le32(tmp, &isc_packet->addr);
msg[0].len = sizeof(struct isc_packet) + ISC_XFER_LEN;
memcpy(isc_packet->data, data + ptr, ISC_XFER_LEN);
ret = melfas_i2c_DMA_RW_isc(melfas_i2c_client,ISC_DMA_W,
NULL,NULL,
msg[0].buf,msg[0].len);
if (ret < 0)
{
TPD_DMESG("MMS-ISC, flash firmware,ret = %d, Line: %d, Failed\n",ret, __LINE__);
goto i2c_err;
}
else
TPD_DMESG("MMS-ISC, flash firmware, Success, page = %d, i= %d\n",page,i);
//if (i2c_transfer(client->adapter, msg, 1) != 1)
// goto i2c_err;
/* verify firmware */
tmp |= ISC_CMD_READ;
put_unaligned_le32(tmp, &isc_packet->addr);
msg[0].len = sizeof(struct isc_packet);
ret = melfas_i2c_DMA_RW_isc(melfas_i2c_client,ISC_DMA_R,
msg[1].buf,msg[1].len,
msg[0].buf,msg[0].len);
if (ret < 0)
{
TPD_DMESG("MMS-ISC, verify firmware,ret = %d, Failed, page = %d, i= %d\n",ret,page,i);
goto i2c_err;
}
else
TPD_DMESG("MMS-ISC, verify firmware, Success, page = %d, i= %d\n",page,i);
//if (i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)) != ARRAY_SIZE(msg))
// goto i2c_err;
if (memcmp(isc_packet->data, msg[1].buf, ISC_XFER_LEN))
{
#if FLASH_VERBOSE_DEBUG
print_hex_dump(KERN_ERR, "mms fw wr : ",
DUMP_PREFIX_OFFSET, 16, 1,
isc_packet->data, ISC_XFER_LEN, false);
print_hex_dump(KERN_ERR, "mms fw rd : ",
DUMP_PREFIX_OFFSET, 16, 1,
msg[1].buf, ISC_XFER_LEN, false);
#endif
TPD_DMESG("MMS-ISC, flash verify failed\n");
ret = -1;
goto out;
}
}
}
TPD_DMESG("MMS-ISC, section [%d] update succeeded\n", img->type);
ret = 0;
goto out;
i2c_err:
TPD_DMESG("MMS-ISC, i2c failed @ %s\n", __func__);
ret = -1;
out:
kfree(isc_packet);
kfree(msg[1].buf);
return ret;
}
static int mms_flash_fw(const struct firmware *fw, struct i2c_client *client)
{
int ret;
int i;
struct mms_bin_hdr *fw_hdr;
struct mms_fw_img **img;
u8 ver[MAX_SECTION_NUM];
u8 target[MAX_SECTION_NUM];
int offset = sizeof(struct mms_bin_hdr);
struct mms_ext_hdr *ext;
int retires = 3;
bool update_flag = false;
TPD_DMESG("mms_flash_fw \n");
fw_hdr = (struct mms_bin_hdr *)fw->data;
ext = (struct mms_ext_hdr *)(fw->data + fw_hdr->extention_offset);
img = kzalloc(sizeof(*img) * fw_hdr->section_num, GFP_KERNEL);
if (retires < 0) {
TPD_DMESG("failed to obtain ver. info\n");
memset(ver, 0xff, sizeof(ver));
} else {
print_hex_dump(KERN_INFO, "mms_ts fw ver : ", DUMP_PREFIX_NONE, 16, 1,
ver, MAX_SECTION_NUM, false);
ret = mms_isc_enter(client);
if (ret <0)
{
TPD_DMESG("MMS-ISC, mms_isc_enter, %d, Failed\n",__LINE__);
mms_reboot();
goto out;
}
else
TPD_DMESG("MMS-ISC, mms_isc_enter, %d, Sucess\n",__LINE__);
}
for (i = 0; i < fw_hdr->section_num; i++, offset += sizeof(struct mms_fw_img))
{
TPD_DMESG("MMS-ISC, section_num = %d, offset = %d \n",fw_hdr->section_num,sizeof(struct mms_fw_img));
img[i] = (struct mms_fw_img *)(fw->data + offset);
target[i] = img[i]->version;
if (ver[img[i]->type] != target[i]) {
TPD_DMESG("MMS-ISC, section [%d] is need to be updated. ver : 0x%x, bin : 0x%x\n",
i, ver[i], target[i]);
update_flag = true;
if ((ret = mms_flash_section(client, img[i], fw->data + fw_hdr->binary_offset, ext))) {
mms_reboot();
goto out;
}
} else {
TPD_DMESG("MMS-ISC, section [%d] is up to date\n", i);
}
}
if (update_flag)
ret = mms_isc_exit(client);
if (ret < 0)
{
TPD_DMESG("MMS-ISC, mms_isc_exit, Failed\n");
goto out;
}
else
{
TPD_DMESG("MMS-ISC, mms_isc_exit, Sucess\n");
}
msleep(5);
mms_reboot();
#if 0
//update finished, check the firmware to confirm
if (melfas_check_firmware(client)) {
TPD_DMESG("failed to obtain version after flash\n");
ret = -1;
goto out;
} else {
for (i = 0; i < fw_hdr->section_num; i++) {
if (ver[img[i]->type] != target[i]) {
TPD_DMESG("version mismatch after flash. [%d] 0x%x != 0x%x\n",
i, ver[img[i]->type], target[i]);
ret = -1;
goto out;
}
}
}
#endif
ret = 0;
out:
kfree(img);
if (isc_entered)//(update_flag)
{
ret = mms_isc_exit(client);
if (ret < 0)
{
TPD_DMESG("MMS-ISC, mms_isc_exit, Failed\n");
}
else
{
TPD_DMESG("MMS-ISC, mms_isc_exit, Sucess\n");
}
}
msleep(5);
mms_reboot();
//mms_ts_config(info);
i2c_smbus_read_byte_data(client, MMS_TX_NUM);
i2c_smbus_read_byte_data(client, MMS_RX_NUM);
//release_firmware(fw);
return ret;
}
//extern struct completion mms200_init_done;
/*
PR 453322,temp solution. if failed in update,we try another i2c address
*/
void mms_fw_update_controller(const struct firmware *fw, struct i2c_client *client)
{
int retires = 3;
int ret;
TPD_DMESG("mms_fw_update_controller \n");
if (!fw) {
TPD_DMESG("failed to read firmware\n");
//complete_all(&mms200_init_done);
return;
}
do {
ret = mms_flash_fw(fw, client);
if(ret < 0)
{
client->addr = 0x48;
TPD_DMESG("modify i2c addr to 0x48\n");
}
else
{
client->addr = 0x20;
TPD_DMESG("modify i2c addr to 0x20\n");
}
} while ((ret != 0) && (--retires));
client->addr = 0x20;
if (!retires) {
TPD_DMESG("failed to flash firmware after retires\n");
}
}
int isc_fw_download(struct i2c_client *client, const u8 *data, size_t len)
{
#if 0
u8 *buff;
u16 crc_buf;
int src_idx;
int dest_idx;
int ret;
int i, j;
buff = kzalloc(1024, GFP_KERNEL);
if (!buff)
{
TPD_DMESG("%s: failed to allocate memory\n", __func__);
kfree(buff);
ret = -1;
return ret;
}
/*1, enterring ISC mode */
ret = mms_isc_enter(client);
if (ret < 0)
{
TPD_DMESG("fail to enter ISC mode(err=%d)\n", ret);
return ret;
}
usleep_range(10000, 20000);
TPD_DMESG("isc_fw, Step 1: Enter ISC mode\n");
#if 0
/*2, enter ISC update mode */
for (i = 0; i < fw_hdr->section_num; i++, offset += sizeof(struct mms_fw_img)) {
img[i] = (struct mms_fw_img *)(fw->data + offset);
target[i] = img[i]->version;
if (ver[img[i]->type] != target[i]) {
dev_info(&client->dev,
"section [%d] is need to be updated. ver : 0x%x, bin : 0x%x\n",
i, ver[i], target[i]);
update_flag = true;
if ((ret = mms_flash_section(info, img[i], fw->data + fw_hdr->binary_offset, ext))) {
mms_reboot( );
goto out;
}
} else {
dev_info(&client->dev, "section [%d] is up to date\n", i);
}
}
#endif
/*3, exit ISC mode */
ret = mms_isc_exit(client);
TPD_DMESG("isc_fw, Step 1: Exit ISC mode\n");
kfree(buff);
return ret;
#endif
}
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