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Input: elan_i2c - add support for different firmware page sizes

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Prepare driver for devices that use different sizes of firmware pages.

Signed-off-by: Jingle Wu <jingle.wu@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Jingle Wu 2020-07-16 21:32:23 -07:00 committed by Dmitry Torokhov
parent df10cc8db1
commit 059d6c2de6
4 changed files with 41 additions and 25 deletions
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4
drivers/input/mouse/elan_i2c.h
View File

@ -33,6 +33,8 @@
#define ETP_FW_IAP_PAGE_ERR (1 << 5)
#define ETP_FW_IAP_INTF_ERR (1 << 4)
#define ETP_FW_PAGE_SIZE 64
#define ETP_FW_PAGE_SIZE_128 128
#define ETP_FW_PAGE_SIZE_512 512
#define ETP_FW_SIGNATURE_SIZE 6
struct i2c_client;
@ -73,7 +75,7 @@ struct elan_transport_ops {
int (*iap_reset)(struct i2c_client *client);
int (*prepare_fw_update)(struct i2c_client *client);
int (*write_fw_block)(struct i2c_client *client,
int (*write_fw_block)(struct i2c_client *client, u16 fw_page_size,
const u8 *page, u16 checksum, int idx);
int (*finish_fw_update)(struct i2c_client *client,
struct completion *reset_done);

24
drivers/input/mouse/elan_i2c_core.c
View File

@ -89,7 +89,8 @@ struct elan_tp_data {
u8 mode;
u16 ic_type;
u16 fw_validpage_count;
u16 fw_signature_address;
u16 fw_page_size;
u32 fw_signature_address;
bool irq_wake;
@ -101,7 +102,7 @@ struct elan_tp_data {
};
static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
u16 *signature_address)
u32 *signature_address, u16 *page_size)
{
switch (ic_type) {
case 0x00:
@ -130,12 +131,15 @@ static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
/* unknown ic type clear value */
*validpage_count = 0;
*signature_address = 0;
*page_size = 0;
return -ENXIO;
}
*signature_address =
(*validpage_count * ETP_FW_PAGE_SIZE) - ETP_FW_SIGNATURE_SIZE;
*page_size = ETP_FW_PAGE_SIZE;
return 0;
}
@ -336,7 +340,8 @@ static int elan_query_device_info(struct elan_tp_data *data)
return error;
error = elan_get_fwinfo(data->ic_type, &data->fw_validpage_count,
&data->fw_signature_address);
&data->fw_signature_address,
&data->fw_page_size);
if (error)
dev_warn(&data->client->dev,
"unexpected iap version %#04x (ic type: %#04x), firmware update will not work\n",
@ -424,14 +429,14 @@ static int elan_query_device_parameters(struct elan_tp_data *data)
* IAP firmware updater related routines
**********************************************************
*/
static int elan_write_fw_block(struct elan_tp_data *data,
static int elan_write_fw_block(struct elan_tp_data *data, u16 page_size,
const u8 *page, u16 checksum, int idx)
{
int retry = ETP_RETRY_COUNT;
int error;
do {
error = data->ops->write_fw_block(data->client,
error = data->ops->write_fw_block(data->client, page_size,
page, checksum, idx);
if (!error)
return 0;
@ -460,15 +465,16 @@ static int __elan_update_firmware(struct elan_tp_data *data,
iap_start_addr = get_unaligned_le16(&fw->data[ETP_IAP_START_ADDR * 2]);
boot_page_count = (iap_start_addr * 2) / ETP_FW_PAGE_SIZE;
boot_page_count = (iap_start_addr * 2) / data->fw_page_size;
for (i = boot_page_count; i < data->fw_validpage_count; i++) {
u16 checksum = 0;
const u8 *page = &fw->data[i * ETP_FW_PAGE_SIZE];
const u8 *page = &fw->data[i * data->fw_page_size];
for (j = 0; j < ETP_FW_PAGE_SIZE; j += 2)
for (j = 0; j < data->fw_page_size; j += 2)
checksum += ((page[j + 1] << 8) | page[j]);
error = elan_write_fw_block(data, page, checksum, i);
error = elan_write_fw_block(data, data->fw_page_size,
page, checksum, i);
if (error) {
dev_err(dev, "write page %d fail: %d\n", i, error);
return error;

30
drivers/input/mouse/elan_i2c_i2c.c
View File

@ -19,6 +19,7 @@
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <asm/unaligned.h>
@ -592,45 +593,52 @@ static int elan_i2c_prepare_fw_update(struct i2c_client *client)
return 0;
}
static int elan_i2c_write_fw_block(struct i2c_client *client,
static int elan_i2c_write_fw_block(struct i2c_client *client, u16 fw_page_size,
const u8 *page, u16 checksum, int idx)
{
struct device *dev = &client->dev;
u8 page_store[ETP_FW_PAGE_SIZE + 4];
u8 *page_store;
u8 val[3];
u16 result;
int ret, error;
page_store = kmalloc(fw_page_size + 4, GFP_KERNEL);
if (!page_store)
return -ENOMEM;
page_store[0] = ETP_I2C_IAP_REG_L;
page_store[1] = ETP_I2C_IAP_REG_H;
memcpy(&page_store[2], page, ETP_FW_PAGE_SIZE);
memcpy(&page_store[2], page, fw_page_size);
/* recode checksum at last two bytes */
put_unaligned_le16(checksum, &page_store[ETP_FW_PAGE_SIZE + 2]);
put_unaligned_le16(checksum, &page_store[fw_page_size + 2]);
ret = i2c_master_send(client, page_store, sizeof(page_store));
if (ret != sizeof(page_store)) {
ret = i2c_master_send(client, page_store, fw_page_size + 4);
if (ret != fw_page_size + 4) {
error = ret < 0 ? ret : -EIO;
dev_err(dev, "Failed to write page %d: %d\n", idx, error);
return error;
goto exit;
}
/* Wait for F/W to update one page ROM data. */
msleep(35);
msleep(fw_page_size == ETP_FW_PAGE_SIZE_512 ? 50 : 35);
error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
if (error) {
dev_err(dev, "Failed to read IAP write result: %d\n", error);
return error;
goto exit;
}
result = le16_to_cpup((__le16 *)val);
if (result & (ETP_FW_IAP_PAGE_ERR | ETP_FW_IAP_INTF_ERR)) {
dev_err(dev, "IAP reports failed write: %04hx\n",
result);
return -EIO;
error = -EIO;
goto exit;
}
return 0;
exit:
kfree(page_store);
return error;
}
static int elan_i2c_finish_fw_update(struct i2c_client *client,

8
drivers/input/mouse/elan_i2c_smbus.c
View File

@ -414,7 +414,7 @@ static int elan_smbus_prepare_fw_update(struct i2c_client *client)
}
static int elan_smbus_write_fw_block(struct i2c_client *client,
static int elan_smbus_write_fw_block(struct i2c_client *client, u16 fw_page_size,
const u8 *page, u16 checksum, int idx)
{
struct device *dev = &client->dev;
@ -429,7 +429,7 @@ static int elan_smbus_write_fw_block(struct i2c_client *client,
*/
error = i2c_smbus_write_block_data(client,
ETP_SMBUS_WRITE_FW_BLOCK,
ETP_FW_PAGE_SIZE / 2,
fw_page_size / 2,
page);
if (error) {
dev_err(dev, "Failed to write page %d (part %d): %d\n",
@ -439,8 +439,8 @@ static int elan_smbus_write_fw_block(struct i2c_client *client,
error = i2c_smbus_write_block_data(client,
ETP_SMBUS_WRITE_FW_BLOCK,
ETP_FW_PAGE_SIZE / 2,
page + ETP_FW_PAGE_SIZE / 2);
fw_page_size / 2,
page + fw_page_size / 2);
if (error) {
dev_err(dev, "Failed to write page %d (part %d): %d\n",
idx, 2, error);