* Copyright (c) 2013 ELAN Microelectronics Corp.
*
* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
- * Version: 1.5.6
+ * Version: 1.5.9
*
* Based on cyapa driver:
* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
#include "elan_i2c.h"
#define DRIVER_NAME "elan_i2c"
-#define ELAN_DRIVER_VERSION "1.5.6"
-#define ETP_PRESSURE_OFFSET 25
+#define ELAN_DRIVER_VERSION "1.5.9"
#define ETP_MAX_PRESSURE 255
#define ETP_FWIDTH_REDUCE 90
#define ETP_FINGER_WIDTH 15
#define ETP_REPORT_ID_OFFSET 2
#define ETP_TOUCH_INFO_OFFSET 3
#define ETP_FINGER_DATA_OFFSET 4
+#define ETP_HOVER_INFO_OFFSET 30
#define ETP_MAX_REPORT_LEN 34
/* The main device structure */
u8 sm_version;
u8 iap_version;
u16 fw_checksum;
-
+ int pressure_adjustment;
u8 mode;
+ u8 ic_type;
+ u16 fw_vaildpage_count;
+ u16 fw_signature_address;
bool irq_wake;
bool baseline_ready;
};
+static int elan_get_fwinfo(u8 ic_type, u16 *vaildpage_count,
+ u16 *signature_address)
+{
+ switch(ic_type) {
+ case 0x09:
+ *vaildpage_count = 768;
+ break;
+ case 0x0D:
+ *vaildpage_count = 896;
+ break;
+ default:
+ /* unknown ic type clear value */
+ *vaildpage_count = 0;
+ *signature_address = 0;
+ return -ENXIO;
+ }
+
+ *signature_address =
+ (*vaildpage_count * ETP_FW_PAGE_SIZE) - ETP_FW_SIGNATURE_SIZE;
+
+ return 0;
+}
+
static int elan_enable_power(struct elan_tp_data *data)
{
int repeat = ETP_RETRY_COUNT;
error = regulator_enable(data->vcc);
if (error) {
dev_err(&data->client->dev,
- "Failed to enable regulator: %d\n", error);
+ "failed to enable regulator: %d\n", error);
return error;
}
msleep(30);
} while (--repeat > 0);
+ dev_err(&data->client->dev, "failed to enable power: %d\n", error);
return error;
}
error = regulator_disable(data->vcc);
if (error) {
dev_err(&data->client->dev,
- "Failed to disable regulator: %d\n",
+ "failed to disable regulator: %d\n",
error);
/* Attempt to power the chip back up */
data->ops->power_control(data->client, true);
msleep(30);
} while (--repeat > 0);
+ dev_err(&data->client->dev, "failed to disable power: %d\n", error);
return error;
}
if (!error)
return 0;
- repeat--;
msleep(30);
} while (--repeat > 0);
if (error)
return error;
- error = data->ops->get_sm_version(data->client, &data->sm_version);
+ error = data->ops->get_sm_version(data->client, &data->ic_type,
+ &data->sm_version);
if (error)
return error;
if (error)
return error;
+ error = data->ops->get_pressure_adjustment(data->client,
+ &data->pressure_adjustment);
+ if (error)
+ return error;
+
+ error = elan_get_fwinfo(data->ic_type, &data->fw_vaildpage_count,
+ &data->fw_signature_address);
+ if (error) {
+ dev_err(&data->client->dev,
+ "unknown ic type %d\n", data->ic_type);
+ return error;
+ }
+
return 0;
}
iap_start_addr = get_unaligned_le16(&fw->data[ETP_IAP_START_ADDR * 2]);
boot_page_count = (iap_start_addr * 2) / ETP_FW_PAGE_SIZE;
- for (i = boot_page_count; i < ETP_FW_VAILDPAGE_COUNT; i++) {
+ for (i = boot_page_count; i < data->fw_vaildpage_count; i++) {
u16 checksum = 0;
const u8 *page = &fw->data[i * ETP_FW_PAGE_SIZE];
struct i2c_client *client = to_i2c_client(dev);
struct elan_tp_data *data = i2c_get_clientdata(client);
- return sprintf(buf, "%d.0\n", data->product_id);
+ return sprintf(buf, ETP_PRODUCT_ID_FORMAT_STRING "\n",
+ data->product_id);
}
static ssize_t elan_sysfs_read_fw_ver(struct device *dev,
{
struct elan_tp_data *data = dev_get_drvdata(dev);
const struct firmware *fw;
+ char *fw_name;
int error;
const u8 *fw_signature;
static const u8 signature[] = {0xAA, 0x55, 0xCC, 0x33, 0xFF, 0xFF};
- error = request_firmware(&fw, ETP_FW_NAME, dev);
+ /* Look for a firmware with the product id appended. */
+ fw_name = kasprintf(GFP_KERNEL, ETP_FW_NAME, data->product_id);
+ if (!fw_name) {
+ dev_err(dev, "failed to allocate memory for firmware name\n");
+ return -ENOMEM;
+ }
+
+ dev_info(dev, "requesting fw '%s'\n", fw_name);
+ error = request_firmware(&fw, fw_name, dev);
+ kfree(fw_name);
if (error) {
- dev_err(dev, "cannot load firmware %s: %d\n",
- ETP_FW_NAME, error);
+ dev_err(dev, "failed to request firmware: %d\n", error);
return error;
}
/* Firmware file must match signature data */
- fw_signature = &fw->data[ETP_FW_SIGNATURE_ADDRESS];
+ fw_signature = &fw->data[data->fw_signature_address];
if (memcmp(fw_signature, signature, sizeof(signature)) != 0) {
dev_err(dev, "signature mismatch (expected %*ph, got %*ph)\n",
(int)sizeof(signature), signature,
*/
static void elan_report_contact(struct elan_tp_data *data,
int contact_num, bool contact_valid,
- u8 *finger_data)
+ bool hover_event, u8 *finger_data)
{
struct input_dev *input = data->input;
unsigned int pos_x, pos_y;
unsigned int pressure, mk_x, mk_y;
- unsigned int area_x, area_y, major, minor, new_pressure;
-
+ unsigned int area_x, area_y, major, minor;
+ unsigned int scaled_pressure;
if (contact_valid) {
pos_x = ((finger_data[0] & 0xf0) << 4) |
major = max(area_x, area_y);
minor = min(area_x, area_y);
- new_pressure = pressure + ETP_PRESSURE_OFFSET;
- if (new_pressure > ETP_MAX_PRESSURE)
- new_pressure = ETP_MAX_PRESSURE;
+ scaled_pressure = pressure + data->pressure_adjustment;
+
+ if (scaled_pressure > ETP_MAX_PRESSURE)
+ scaled_pressure = ETP_MAX_PRESSURE;
input_mt_slot(input, contact_num);
input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
input_report_abs(input, ABS_MT_POSITION_X, pos_x);
input_report_abs(input, ABS_MT_POSITION_Y, data->max_y - pos_y);
- input_report_abs(input, ABS_MT_PRESSURE, new_pressure);
+ input_report_abs(input, ABS_MT_DISTANCE, hover_event);
+ input_report_abs(input, ABS_MT_PRESSURE,
+ hover_event ? 0 : scaled_pressure);
input_report_abs(input, ABS_TOOL_WIDTH, mk_x);
input_report_abs(input, ABS_MT_TOUCH_MAJOR, major);
input_report_abs(input, ABS_MT_TOUCH_MINOR, minor);
u8 *finger_data = &packet[ETP_FINGER_DATA_OFFSET];
int i;
u8 tp_info = packet[ETP_TOUCH_INFO_OFFSET];
- bool contact_valid;
+ u8 hover_info = packet[ETP_HOVER_INFO_OFFSET];
+ bool contact_valid, hover_event;
+ hover_event = hover_info & 0x40;
for (i = 0; i < ETP_MAX_FINGERS; i++) {
contact_valid = tp_info & (1U << (3 + i));
- elan_report_contact(data, i, contact_valid, finger_data);
+ elan_report_contact(data, i, contact_valid, hover_event,
+ finger_data);
if (contact_valid)
finger_data += ETP_FINGER_DATA_LEN;
ETP_FINGER_WIDTH * max_width, 0, 0);
input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0,
ETP_FINGER_WIDTH * min_width, 0, 0);
+ input_set_abs_params(input, ABS_MT_DISTANCE, 0, 1, 0, 0);
data->input = input;
}
error = elan_enable_power(data);
- if (error)
+ if (error) {
dev_err(dev, "power up when resuming failed: %d\n", error);
+ goto err;
+ }
error = elan_initialize(data);
if (error)
dev_err(dev, "initialize when resuming failed: %d\n", error);
+err:
enable_irq(data->client->irq);
-
- return 0;
+ return error;
}
static SIMPLE_DEV_PM_OPS(elan_pm_ops, elan_suspend, elan_resume);
projects / firefly-linux-kernel-4.4.55.git / blobdiff