Release 4.11 drivers/input/rmi4/rmi_f34v7.c
/*
* Copyright (c) 2016, Zodiac Inflight Innovations
* Copyright (c) 2007-2016, Synaptics Incorporated
* Copyright (C) 2012 Alexandra Chin <alexandra.chin@tw.synaptics.com>
* Copyright (C) 2012 Scott Lin <scott.lin@tw.synaptics.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/rmi.h>
#include <linux/firmware.h>
#include <asm/unaligned.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "rmi_driver.h"
#include "rmi_f34.h"
static int rmi_f34v7_read_flash_status(struct f34_data *f34)
{
u8 status;
u8 command;
int ret;
ret = rmi_read_block(f34->fn->rmi_dev,
f34->fn->fd.data_base_addr + f34->v7.off.flash_status,
&status,
sizeof(status));
if (ret < 0) {
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Failed to read flash status\n", __func__);
return ret;
}
f34->v7.in_bl_mode = status >> 7;
f34->v7.flash_status = status & 0x1f;
if (f34->v7.flash_status != 0x00) {
dev_err(&f34->fn->dev, "%s: status=%d, command=0x%02x\n",
__func__, f34->v7.flash_status, f34->v7.command);
}
ret = rmi_read_block(f34->fn->rmi_dev,
f34->fn->fd.data_base_addr + f34->v7.off.flash_cmd,
&command,
sizeof(command));
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to read flash command\n",
__func__);
return ret;
}
f34->v7.command = command;
return 0;
}
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static int rmi_f34v7_wait_for_idle(struct f34_data *f34, int timeout_ms)
{
int count = 0;
int timeout_count = ((timeout_ms * 1000) / MAX_SLEEP_TIME_US) + 1;
do {
usleep_range(MIN_SLEEP_TIME_US, MAX_SLEEP_TIME_US);
count++;
rmi_f34v7_read_flash_status(f34);
if ((f34->v7.command == v7_CMD_IDLE)
&& (f34->v7.flash_status == 0x00)) {
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"Idle status detected\n");
return 0;
}
} while (count < timeout_count);
dev_err(&f34->fn->dev,
"%s: Timed out waiting for idle status\n", __func__);
return -ETIMEDOUT;
}
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static int rmi_f34v7_write_command_single_transaction(struct f34_data *f34,
u8 cmd)
{
int ret;
u8 base;
struct f34v7_data_1_5 data_1_5;
base = f34->fn->fd.data_base_addr;
memset(&data_1_5, 0, sizeof(data_1_5));
switch (cmd) {
case v7_CMD_ERASE_ALL:
data_1_5.partition_id = CORE_CODE_PARTITION;
data_1_5.command = CMD_V7_ERASE_AP;
break;
case v7_CMD_ERASE_UI_FIRMWARE:
data_1_5.partition_id = CORE_CODE_PARTITION;
data_1_5.command = CMD_V7_ERASE;
break;
case v7_CMD_ERASE_BL_CONFIG:
data_1_5.partition_id = GLOBAL_PARAMETERS_PARTITION;
data_1_5.command = CMD_V7_ERASE;
break;
case v7_CMD_ERASE_UI_CONFIG:
data_1_5.partition_id = CORE_CONFIG_PARTITION;
data_1_5.command = CMD_V7_ERASE;
break;
case v7_CMD_ERASE_DISP_CONFIG:
data_1_5.partition_id = DISPLAY_CONFIG_PARTITION;
data_1_5.command = CMD_V7_ERASE;
break;
case v7_CMD_ERASE_FLASH_CONFIG:
data_1_5.partition_id = FLASH_CONFIG_PARTITION;
data_1_5.command = CMD_V7_ERASE;
break;
case v7_CMD_ERASE_GUEST_CODE:
data_1_5.partition_id = GUEST_CODE_PARTITION;
data_1_5.command = CMD_V7_ERASE;
break;
case v7_CMD_ENABLE_FLASH_PROG:
data_1_5.partition_id = BOOTLOADER_PARTITION;
data_1_5.command = CMD_V7_ENTER_BL;
break;
}
data_1_5.payload[0] = f34->bootloader_id[0];
data_1_5.payload[1] = f34->bootloader_id[1];
ret = rmi_write_block(f34->fn->rmi_dev,
base + f34->v7.off.partition_id,
&data_1_5, sizeof(data_1_5));
if (ret < 0) {
dev_err(&f34->fn->dev,
"%s: Failed to write single transaction command\n",
__func__);
return ret;
}
return 0;
}
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static int rmi_f34v7_write_command(struct f34_data *f34, u8 cmd)
{
int ret;
u8 base;
u8 command;
base = f34->fn->fd.data_base_addr;
switch (cmd) {
case v7_CMD_WRITE_FW:
case v7_CMD_WRITE_CONFIG:
case v7_CMD_WRITE_GUEST_CODE:
command = CMD_V7_WRITE;
break;
case v7_CMD_READ_CONFIG:
command = CMD_V7_READ;
break;
case v7_CMD_ERASE_ALL:
command = CMD_V7_ERASE_AP;
break;
case v7_CMD_ERASE_UI_FIRMWARE:
case v7_CMD_ERASE_BL_CONFIG:
case v7_CMD_ERASE_UI_CONFIG:
case v7_CMD_ERASE_DISP_CONFIG:
case v7_CMD_ERASE_FLASH_CONFIG:
case v7_CMD_ERASE_GUEST_CODE:
command = CMD_V7_ERASE;
break;
case v7_CMD_ENABLE_FLASH_PROG:
command = CMD_V7_ENTER_BL;
break;
default:
dev_err(&f34->fn->dev, "%s: Invalid command 0x%02x\n",
__func__, cmd);
return -EINVAL;
}
f34->v7.command = command;
switch (cmd) {
case v7_CMD_ERASE_ALL:
case v7_CMD_ERASE_UI_FIRMWARE:
case v7_CMD_ERASE_BL_CONFIG:
case v7_CMD_ERASE_UI_CONFIG:
case v7_CMD_ERASE_DISP_CONFIG:
case v7_CMD_ERASE_FLASH_CONFIG:
case v7_CMD_ERASE_GUEST_CODE:
case v7_CMD_ENABLE_FLASH_PROG:
ret = rmi_f34v7_write_command_single_transaction(f34, cmd);
if (ret < 0)
return ret;
else
return 0;
default:
break;
}
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev, "%s: writing cmd %02X\n",
__func__, command);
ret = rmi_write_block(f34->fn->rmi_dev,
base + f34->v7.off.flash_cmd,
&command, sizeof(command));
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to write flash command\n",
__func__);
return ret;
}
return 0;
}
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static int rmi_f34v7_write_partition_id(struct f34_data *f34, u8 cmd)
{
int ret;
u8 base;
u8 partition;
base = f34->fn->fd.data_base_addr;
switch (cmd) {
case v7_CMD_WRITE_FW:
partition = CORE_CODE_PARTITION;
break;
case v7_CMD_WRITE_CONFIG:
case v7_CMD_READ_CONFIG:
if (f34->v7.config_area == v7_UI_CONFIG_AREA)
partition = CORE_CONFIG_PARTITION;
else if (f34->v7.config_area == v7_DP_CONFIG_AREA)
partition = DISPLAY_CONFIG_PARTITION;
else if (f34->v7.config_area == v7_PM_CONFIG_AREA)
partition = GUEST_SERIALIZATION_PARTITION;
else if (f34->v7.config_area == v7_BL_CONFIG_AREA)
partition = GLOBAL_PARAMETERS_PARTITION;
else if (f34->v7.config_area == v7_FLASH_CONFIG_AREA)
partition = FLASH_CONFIG_PARTITION;
break;
case v7_CMD_WRITE_GUEST_CODE:
partition = GUEST_CODE_PARTITION;
break;
case v7_CMD_ERASE_ALL:
partition = CORE_CODE_PARTITION;
break;
case v7_CMD_ERASE_BL_CONFIG:
partition = GLOBAL_PARAMETERS_PARTITION;
break;
case v7_CMD_ERASE_UI_CONFIG:
partition = CORE_CONFIG_PARTITION;
break;
case v7_CMD_ERASE_DISP_CONFIG:
partition = DISPLAY_CONFIG_PARTITION;
break;
case v7_CMD_ERASE_FLASH_CONFIG:
partition = FLASH_CONFIG_PARTITION;
break;
case v7_CMD_ERASE_GUEST_CODE:
partition = GUEST_CODE_PARTITION;
break;
case v7_CMD_ENABLE_FLASH_PROG:
partition = BOOTLOADER_PARTITION;
break;
default:
dev_err(&f34->fn->dev, "%s: Invalid command 0x%02x\n",
__func__, cmd);
return -EINVAL;
}
ret = rmi_write_block(f34->fn->rmi_dev,
base + f34->v7.off.partition_id,
&partition, sizeof(partition));
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to write partition ID\n",
__func__);
return ret;
}
return 0;
}
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static int rmi_f34v7_read_f34v7_partition_table(struct f34_data *f34)
{
int ret;
u8 base;
__le16 length;
u16 block_number = 0;
base = f34->fn->fd.data_base_addr;
f34->v7.config_area = v7_FLASH_CONFIG_AREA;
ret = rmi_f34v7_write_partition_id(f34, v7_CMD_READ_CONFIG);
if (ret < 0)
return ret;
ret = rmi_write_block(f34->fn->rmi_dev,
base + f34->v7.off.block_number,
&block_number, sizeof(block_number));
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to write block number\n",
__func__);
return ret;
}
put_unaligned_le16(f34->v7.flash_config_length, &length);
ret = rmi_write_block(f34->fn->rmi_dev,
base + f34->v7.off.transfer_length,
&length, sizeof(length));
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to write transfer length\n",
__func__);
return ret;
}
ret = rmi_f34v7_write_command(f34, v7_CMD_READ_CONFIG);
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to write command\n",
__func__);
return ret;
}
ret = rmi_f34v7_wait_for_idle(f34, WRITE_WAIT_MS);
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to wait for idle status\n",
__func__);
return ret;
}
ret = rmi_read_block(f34->fn->rmi_dev,
base + f34->v7.off.payload,
f34->v7.read_config_buf,
f34->v7.partition_table_bytes);
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to read block data\n",
__func__);
return ret;
}
return 0;
}
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static void rmi_f34v7_parse_partition_table(struct f34_data *f34,
const void *partition_table,
struct block_count *blkcount,
struct physical_address *phyaddr)
{
int i;
int index;
u16 partition_length;
u16 physical_address;
const struct partition_table *ptable;
for (i = 0; i < f34->v7.partitions; i++) {
index = i * 8 + 2;
ptable = partition_table + index;
partition_length = le16_to_cpu(ptable->partition_length);
physical_address = le16_to_cpu(ptable->start_physical_address);
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Partition entry %d: %*ph\n",
__func__, i, sizeof(struct partition_table), ptable);
switch (ptable->partition_id & 0x1f) {
case CORE_CODE_PARTITION:
blkcount->ui_firmware = partition_length;
phyaddr->ui_firmware = physical_address;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Core code block count: %d\n",
__func__, blkcount->ui_firmware);
break;
case CORE_CONFIG_PARTITION:
blkcount->ui_config = partition_length;
phyaddr->ui_config = physical_address;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Core config block count: %d\n",
__func__, blkcount->ui_config);
break;
case DISPLAY_CONFIG_PARTITION:
blkcount->dp_config = partition_length;
phyaddr->dp_config = physical_address;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Display config block count: %d\n",
__func__, blkcount->dp_config);
break;
case FLASH_CONFIG_PARTITION:
blkcount->fl_config = partition_length;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Flash config block count: %d\n",
__func__, blkcount->fl_config);
break;
case GUEST_CODE_PARTITION:
blkcount->guest_code = partition_length;
phyaddr->guest_code = physical_address;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Guest code block count: %d\n",
__func__, blkcount->guest_code);
break;
case GUEST_SERIALIZATION_PARTITION:
blkcount->pm_config = partition_length;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Guest serialization block count: %d\n",
__func__, blkcount->pm_config);
break;
case GLOBAL_PARAMETERS_PARTITION:
blkcount->bl_config = partition_length;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Global parameters block count: %d\n",
__func__, blkcount->bl_config);
break;
case DEVICE_CONFIG_PARTITION:
blkcount->lockdown = partition_length;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
"%s: Device config block count: %d\n",
__func__, blkcount->lockdown);
break;
}
}
}
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static int rmi_f34v7_read_queries_bl_version(struct f34_data *f34)
{
int ret;
u8 base;
int offset;
u8 query_0;
struct f34v7_query_1_7 query_1_7;
base = f34->fn->fd.query_base_addr;
ret = rmi_read_block(f34->fn->rmi_dev,
base,
&query_0,
sizeof(query_0));
if (ret < 0) {
dev_err(&f34->fn->dev,
"%s: Failed to read query 0\n", __func__);
return ret;
}
offset = (query_0 & 0x7) + 1;
ret = rmi_read_block(f34->fn->rmi_dev,
base + offset,
&query_1_7,
sizeof(query_1_7));
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to read queries 1 to 7\n",
__func__);
return ret;
}
f34->bootloader_id[0] = query_1_7.bl_minor_revision;
f34->bootloader_id[1] = query_1_7.bl_major_revision;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev, "Bootloader V%d.%d\n",
f34->bootloader_id[1], f34->bootloader_id[0]);
return 0;
}
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static int rmi_f34v7_read_queries(struct f34_data *f34)
{
int ret;
int i, j;
u8 base;
int offset;
u8 *ptable;
u8 query_0;
struct f34v7_query_1_7 query_1_7;
base = f34->fn->fd.query_base_addr;
ret = rmi_read_block(f34->fn->rmi_dev,
base,
&query_0,
sizeof(query_0));
if (ret < 0) {
dev_err(&f34->fn->dev,
"%s: Failed to read query 0\n", __func__);
return ret;
}
offset = (query_0 & 0x07) + 1;
ret = rmi_read_block(f34->fn->rmi_dev,
base + offset,
&query_1_7,
sizeof(query_1_7));
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to read queries 1 to 7\n",
__func__);
return ret;
}
f34->bootloader_id[0] = query_1_7.bl_minor_revision;
f34->bootloader_id[1] = query_1_7.bl_major_revision;
f34->v7.block_size = le16_to_cpu(query_1_7.block_size);
f34->v7.flash_config_length =
le16_to_cpu(query_1_7.flash_config_length);
f34->v7.payload_length = le16_to_cpu(query_1_7.payload_length);
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev, "%s: f34->v7.block_size = %d\n",
__func__, f34->v7.block_size);
f34->v7.off.flash_status = V7_FLASH_STATUS_OFFSET;
f34->v7.off.partition_id = V7_PARTITION_ID_OFFSET;
f34->v7.off.block_number = V7_BLOCK_NUMBER_OFFSET;
f34->v7.off.transfer_length = V7_TRANSFER_LENGTH_OFFSET;
f34->v7.off.flash_cmd = V7_COMMAND_OFFSET;
f34->v7.off.payload = V7_PAYLOAD_OFFSET;
f34->v7.has_display_cfg = query_1_7.partition_support[1] & HAS_DISP_CFG;
f34->v7.has_guest_code =
query_1_7.partition_support[1] & HAS_GUEST_CODE;
if (query_0 & HAS_CONFIG_ID) {
char f34_ctrl[CONFIG_ID_SIZE];
int i = 0;
u8 *p = f34->configuration_id;
*p = '\0';
ret = rmi_read_block(f34->fn->rmi_dev,
f34->fn->fd.control_base_addr,
f34_ctrl,
sizeof(f34_ctrl));
if (ret)
return ret;
/* Eat leading zeros */
while (i < sizeof(f34_ctrl) && !f34_ctrl[i])
i++;
for (; i < sizeof(f34_ctrl); i++)
p += snprintf(p, f34->configuration_id
+ sizeof(f34->configuration_id) - p,
"%02X", f34_ctrl[i]);
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev, "Configuration ID: %s\n",
f34->configuration_id);
}
f34->v7.partitions = 0;
for (i = 0; i < sizeof(query_1_7.partition_support); i++)
for (j = 0; j < 8; j++)
if (query_1_7.partition_support[i] & (1 << j))
f34->v7.partitions++;
rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev, "%s: Supported partitions: %*ph\n",
__func__, sizeof(query_1_7.partition_support),
query_1_7.partition_support);
f34->v7.partition_table_bytes = f34->v7.partitions * 8 + 2;
f34->v7.read_config_buf = devm_kzalloc(&f34->fn->dev,
f34->v7.partition_table_bytes,
GFP_KERNEL);
if (!f34->v7.read_config_buf) {
f34->v7.read_config_buf_size = 0;
return -ENOMEM;
}
f34->v7.read_config_buf_size = f34->v7.partition_table_bytes;
ptable = f34->v7.read_config_buf;
ret = rmi_f34v7_read_f34v7_partition_table(f34);
if (ret < 0) {
dev_err(&f34->fn->dev, "%s: Failed to read partition table\n",
__func__);
return ret;
}
rmi_f34v7_parse_partition_table(f34, ptable,
&f34->v7.blkcount, &f34->v7.phyaddr);
return 0;
}
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static int rmi_f34v7_check_ui_firmware_size(struct f34_data *f34)
{
u16 block_count;
block_count = f34->v7.img.ui_firmware.size / f34->v7.block_size;
f34->update_size += block_count;
if (block_count != f34->v7.blkcount.ui_firmware) {
dev_err(&f34->fn->dev,
"UI firmware size mismatch: %d != %d\n",
block_count, f34->v7.blkcount.ui_firmware);
return -EINVAL;
}
return 0;
}
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static int rmi_f34v7_check_ui_config_size(struct f34_data *f34)
{
u16 block_count;
block_count = f34->v7.img.ui_config.size / f34->v7.block_size;
f34->update_size += block_count;
if (block_count != f34->v7.blkcount.ui_config) {
dev_err(&f34->fn->dev, "UI config size mismatch\n");
return -EINVAL;
}
return 0;
}
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static int rmi_f34v7_check_dp_config_size(struct f34_data *f34)
{
u16 block_count;
block_count = f34->v7.img.dp_config.size / f34->v7.block_size;
f34->update_size += block_count;
if (block_count != f34->v7.blkcount.dp_config) {
dev_err(&f34->fn->dev, "Display config size mismatch\n");
return -EINVAL;
}
return 0;
}
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static int rmi_f34v7_check_guest_code_size(struct f34_data *f34)
{
u16 block_count;
block_count = f34->v7.img.guest_code.size / f34->v7.block_size;
f34->update_size += block_count;
if (block_count !=