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authorJingle Wu <jingle.wu@emc.com.tw>2020-07-16 22:49:09 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2020-07-17 17:36:01 -0700
commitbfd9b92bc8f9a3777961d27a08f62872a21ac507 (patch)
tree2f51c613955a99c4f0adf036370910198ad6c4d1 /drivers/input/mouse
parent059d6c2de6fd521d4d4a39d127eece3de114b767 (diff)
downloadlinux-bfd9b92bc8f9a3777961d27a08f62872a21ac507.tar.bz2
Input: elan_i2c - handle firmware updated on newer ICs
Newer ICs with IC type value starting with 0x0D and newer bootloader code use 128-byte firmware pages. Their bootloader also needs to be switched to proper mode before executing firmware update. Signed-off-by: Jingle Wu <jingle.wu@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/mouse')
-rw-r--r--drivers/input/mouse/elan_i2c.h3
-rw-r--r--drivers/input/mouse/elan_i2c_core.c15
-rw-r--r--drivers/input/mouse/elan_i2c_i2c.c46
-rw-r--r--drivers/input/mouse/elan_i2c_smbus.c3
4 files changed, 60 insertions, 7 deletions
diff --git a/drivers/input/mouse/elan_i2c.h b/drivers/input/mouse/elan_i2c.h
index b504f560a666..de10a78f0fc9 100644
--- a/drivers/input/mouse/elan_i2c.h
+++ b/drivers/input/mouse/elan_i2c.h
@@ -74,7 +74,8 @@ struct elan_transport_ops {
int (*iap_get_mode)(struct i2c_client *client, enum tp_mode *mode);
int (*iap_reset)(struct i2c_client *client);
- int (*prepare_fw_update)(struct i2c_client *client);
+ int (*prepare_fw_update)(struct i2c_client *client, u16 ic_type,
+ u8 iap_version);
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,
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 46f334bcfc0e..e0f42def99aa 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -101,7 +101,7 @@ struct elan_tp_data {
bool middle_button;
};
-static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
+static int elan_get_fwinfo(u16 ic_type, u8 iap_version, u16 *validpage_count,
u32 *signature_address, u16 *page_size)
{
switch (ic_type) {
@@ -138,7 +138,12 @@ static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
*signature_address =
(*validpage_count * ETP_FW_PAGE_SIZE) - ETP_FW_SIGNATURE_SIZE;
- *page_size = ETP_FW_PAGE_SIZE;
+ if (ic_type >= 0x0D && iap_version >= 1) {
+ *validpage_count /= 2;
+ *page_size = ETP_FW_PAGE_SIZE_128;
+ } else {
+ *page_size = ETP_FW_PAGE_SIZE;
+ }
return 0;
}
@@ -339,7 +344,8 @@ static int elan_query_device_info(struct elan_tp_data *data)
if (error)
return error;
- error = elan_get_fwinfo(data->ic_type, &data->fw_validpage_count,
+ error = elan_get_fwinfo(data->ic_type, data->iap_version,
+ &data->fw_validpage_count,
&data->fw_signature_address,
&data->fw_page_size);
if (error)
@@ -459,7 +465,8 @@ static int __elan_update_firmware(struct elan_tp_data *data,
u16 boot_page_count;
u16 sw_checksum = 0, fw_checksum = 0;
- error = data->ops->prepare_fw_update(client);
+ error = data->ops->prepare_fw_update(client, data->ic_type,
+ data->iap_version);
if (error)
return error;
diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c
index 4dfc3c2b4706..4dfac2ea5084 100644
--- a/drivers/input/mouse/elan_i2c_i2c.c
+++ b/drivers/input/mouse/elan_i2c_i2c.c
@@ -56,6 +56,8 @@
#define ETP_I2C_CALIBRATE_CMD 0x0316
#define ETP_I2C_MAX_BASELINE_CMD 0x0317
#define ETP_I2C_MIN_BASELINE_CMD 0x0318
+#define ETP_I2C_IAP_TYPE_REG 0x0040
+#define ETP_I2C_IAP_TYPE_CMD 0x0304
#define ETP_I2C_REPORT_LEN 34
#define ETP_I2C_DESC_LENGTH 30
@@ -528,7 +530,43 @@ static int elan_i2c_set_flash_key(struct i2c_client *client)
return 0;
}
-static int elan_i2c_prepare_fw_update(struct i2c_client *client)
+static int elan_read_write_iap_type(struct i2c_client *client)
+{
+ int error;
+ u16 constant;
+ u8 val[3];
+ int retry = 3;
+
+ do {
+ error = elan_i2c_write_cmd(client, ETP_I2C_IAP_TYPE_CMD,
+ ETP_I2C_IAP_TYPE_REG);
+ if (error) {
+ dev_err(&client->dev,
+ "cannot write iap type: %d\n", error);
+ return error;
+ }
+
+ error = elan_i2c_read_cmd(client, ETP_I2C_IAP_TYPE_CMD, val);
+ if (error) {
+ dev_err(&client->dev,
+ "failed to read iap type register: %d\n",
+ error);
+ return error;
+ }
+ constant = le16_to_cpup((__le16 *)val);
+ dev_dbg(&client->dev, "iap type reg: 0x%04x\n", constant);
+
+ if (constant == ETP_I2C_IAP_TYPE_REG)
+ return 0;
+
+ } while (--retry > 0);
+
+ dev_err(&client->dev, "cannot set iap type\n");
+ return -EIO;
+}
+
+static int elan_i2c_prepare_fw_update(struct i2c_client *client, u16 ic_type,
+ u8 iap_version)
{
struct device *dev = &client->dev;
int error;
@@ -568,6 +606,12 @@ static int elan_i2c_prepare_fw_update(struct i2c_client *client)
return -EIO;
}
+ if (ic_type >= 0x0D && iap_version >= 1) {
+ error = elan_read_write_iap_type(client);
+ if (error)
+ return error;
+ }
+
/* Set flash key again */
error = elan_i2c_set_flash_key(client);
if (error)
diff --git a/drivers/input/mouse/elan_i2c_smbus.c b/drivers/input/mouse/elan_i2c_smbus.c
index 59eec1a2ed5c..97c2c46be5f6 100644
--- a/drivers/input/mouse/elan_i2c_smbus.c
+++ b/drivers/input/mouse/elan_i2c_smbus.c
@@ -340,7 +340,8 @@ static int elan_smbus_set_flash_key(struct i2c_client *client)
return 0;
}
-static int elan_smbus_prepare_fw_update(struct i2c_client *client)
+static int elan_smbus_prepare_fw_update(struct i2c_client *client, u16 ic_type,
+ u8 iap_version)
{
struct device *dev = &client->dev;
int len;