+++ /dev/null
-/*
- * Elan I2C/SMBus Touchpad driver
- *
- * Copyright (c) 2013 ELAN Microelectronics Corp.
- *
- * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
- * Version: 1.5.9
- *
- * Based on cyapa driver:
- * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
- * copyright (c) 2011-2012 Google, Inc.
- *
- * 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.
- *
- * Trademarks are the property of their respective owners.
- */
-
-#include <linux/acpi.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/firmware.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/input/mt.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/input.h>
-#include <linux/uaccess.h>
-#include <linux/jiffies.h>
-#include <linux/completion.h>
-#include <linux/of.h>
-#include <linux/regulator/consumer.h>
-#include <asm/unaligned.h>
-
-#include "elan_i2c.h"
-
-#define DRIVER_NAME "elan_i2c"
-#define ELAN_DRIVER_VERSION "1.5.9"
-#define ETP_MAX_PRESSURE 255
-#define ETP_FWIDTH_REDUCE 90
-#define ETP_FINGER_WIDTH 15
-#define ETP_RETRY_COUNT 3
-
-#define ETP_MAX_FINGERS 5
-#define ETP_FINGER_DATA_LEN 5
-#define ETP_REPORT_ID 0x5D
-#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 */
-struct elan_tp_data {
- struct i2c_client *client;
- struct input_dev *input;
- struct regulator *vcc;
-
- const struct elan_transport_ops *ops;
-
- /* for fw update */
- struct completion fw_completion;
- bool in_fw_update;
-
- struct mutex sysfs_mutex;
-
- unsigned int max_x;
- unsigned int max_y;
- unsigned int width_x;
- unsigned int width_y;
- unsigned int x_res;
- unsigned int y_res;
-
- u8 product_id;
- u8 fw_version;
- 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;
-
- u8 min_baseline;
- u8 max_baseline;
- 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;
- int error;
-
- error = regulator_enable(data->vcc);
- if (error) {
- dev_err(&data->client->dev,
- "Failed to enable regulator: %d\n", error);
- return error;
- }
-
- do {
- error = data->ops->power_control(data->client, true);
- if (error >= 0)
- return 0;
-
- msleep(30);
- } while (--repeat > 0);
-
- dev_err(&data->client->dev, "Failed to enable power\n");
- return error;
-}
-
-static int elan_disable_power(struct elan_tp_data *data)
-{
- int repeat = ETP_RETRY_COUNT;
- int error;
-
- do {
- error = data->ops->power_control(data->client, false);
- if (!error) {
- error = regulator_disable(data->vcc);
- if (error) {
- dev_err(&data->client->dev,
- "Failed to disable regulator: %d\n",
- error);
- /* Attempt to power the chip back up */
- data->ops->power_control(data->client, true);
- break;
- }
-
- return 0;
- }
-
- msleep(30);
- } while (--repeat > 0);
-
- dev_err(&data->client->dev, "Failed to disable power\n");
- return error;
-}
-
-static int elan_sleep(struct elan_tp_data *data)
-{
- int repeat = ETP_RETRY_COUNT;
- int error;
-
- do {
- error = data->ops->sleep_control(data->client, true);
- if (!error)
- return 0;
-
- msleep(30);
- } while (--repeat > 0);
-
- return error;
-}
-
-static int __elan_initialize(struct elan_tp_data *data)
-{
- struct i2c_client *client = data->client;
- int error;
-
- error = data->ops->initialize(client);
- if (error) {
- dev_err(&client->dev, "device initialize failed: %d\n", error);
- return error;
- }
-
- data->mode |= ETP_ENABLE_ABS;
- error = data->ops->set_mode(client, data->mode);
- if (error) {
- dev_err(&client->dev,
- "failed to switch to absolute mode: %d\n", error);
- return error;
- }
-
- error = data->ops->sleep_control(client, false);
- if (error) {
- dev_err(&client->dev,
- "failed to wake device up: %d\n", error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_initialize(struct elan_tp_data *data)
-{
- int repeat = ETP_RETRY_COUNT;
- int error;
-
- do {
- error = __elan_initialize(data);
- if (!error)
- return 0;
-
- msleep(30);
- } while (--repeat > 0);
-
- return error;
-}
-
-/*
- * Reactivate touchpad after suspend or inhibit.
- */
-static int elan_reactivate(struct elan_tp_data *data)
-{
- struct device *dev = &data->client->dev;
- int ret;
-
- ret = elan_enable_power(data);
- if (ret)
- dev_err(dev, "resume active power failed, %d\n", ret);
-
- ret = elan_initialize(data);
- if (ret)
- dev_err(dev, "resume initialize tp failed, %d\n", ret);
-
- return ret;
-}
-
-
-static int elan_inhibit(struct input_dev *input_dev)
-{
- struct elan_tp_data *data = input_get_drvdata(input_dev);
- struct i2c_client *client = data->client;
- int ret;
-
- dev_dbg(&client->dev, "inhibit\n");
-
- /*
- * We are taking the mutex to make sure sysfs operations are
- * complete before we attempt to bring the device into low[er]
- * power mode.
- */
- ret = mutex_lock_interruptible(&data->sysfs_mutex);
- if (ret)
- return ret;
-
- disable_irq(client->irq);
-
- ret = elan_disable_power(data);
- if (ret)
- enable_irq(client->irq);
-
- mutex_unlock(&data->sysfs_mutex);
- return ret;
-}
-
-static int elan_uninhibit(struct input_dev *input_dev)
-{
- struct elan_tp_data *data = input_get_drvdata(input_dev);
- struct i2c_client *client = data->client;
- int ret;
-
- dev_dbg(&client->dev, "uninhibit\n");
-
- ret = mutex_lock_interruptible(&data->sysfs_mutex);
- if (ret)
- return ret;
-
- ret = elan_reactivate(data);
- if (ret == 0)
- enable_irq(client->irq);
-
- mutex_unlock(&data->sysfs_mutex);
- return ret;
-}
-
-static int elan_query_device_info(struct elan_tp_data *data)
-{
- int error;
-
- error = data->ops->get_product_id(data->client, &data->product_id);
- if (error)
- return error;
-
- error = data->ops->get_version(data->client, false, &data->fw_version);
- if (error)
- return error;
-
- error = data->ops->get_checksum(data->client, false,
- &data->fw_checksum);
- if (error)
- return error;
-
- error = data->ops->get_sm_version(data->client, &data->ic_type,
- &data->sm_version);
- if (error)
- return error;
-
- error = data->ops->get_version(data->client, true, &data->iap_version);
- 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;
-}
-
-static unsigned int elan_convert_resolution(u8 val)
-{
- /*
- * (value from firmware) * 10 + 790 = dpi
- *
- * We also have to convert dpi to dots/mm (*10/254 to avoid floating
- * point).
- */
-
- return ((int)(char)val * 10 + 790) * 10 / 254;
-}
-
-static int elan_query_device_parameters(struct elan_tp_data *data)
-{
- unsigned int x_traces, y_traces;
- u8 hw_x_res, hw_y_res;
- int error;
-
- error = data->ops->get_max(data->client, &data->max_x, &data->max_y);
- if (error)
- return error;
-
- error = data->ops->get_num_traces(data->client, &x_traces, &y_traces);
- if (error)
- return error;
-
- data->width_x = data->max_x / x_traces;
- data->width_y = data->max_y / y_traces;
-
- error = data->ops->get_resolution(data->client, &hw_x_res, &hw_y_res);
- if (error)
- return error;
-
- data->x_res = elan_convert_resolution(hw_x_res);
- data->y_res = elan_convert_resolution(hw_y_res);
-
- return 0;
-}
-
-/*
- **********************************************************
- * IAP firmware updater related routines
- **********************************************************
- */
-static int elan_write_fw_block(struct elan_tp_data *data,
- const u8 *page, u16 checksum, int idx)
-{
- int retry = ETP_RETRY_COUNT;
- int error;
-
- do {
- error = data->ops->write_fw_block(data->client,
- page, checksum, idx);
- if (!error)
- return 0;
-
- dev_dbg(&data->client->dev,
- "IAP retrying page %d (error: %d)\n", idx, error);
- } while (--retry > 0);
-
- return error;
-}
-
-static int __elan_update_firmware(struct elan_tp_data *data,
- const struct firmware *fw)
-{
- struct i2c_client *client = data->client;
- struct device *dev = &client->dev;
- int i, j;
- int error;
- u16 iap_start_addr;
- u16 boot_page_count;
- u16 sw_checksum = 0, fw_checksum = 0;
-
- error = data->ops->prepare_fw_update(client);
- if (error)
- return error;
-
- 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 < data->fw_vaildpage_count; i++) {
- u16 checksum = 0;
- const u8 *page = &fw->data[i * ETP_FW_PAGE_SIZE];
-
- for (j = 0; j < ETP_FW_PAGE_SIZE; j += 2)
- checksum += ((page[j + 1] << 8) | page[j]);
-
- error = elan_write_fw_block(data, page, checksum, i);
- if (error) {
- dev_err(dev, "write page %d fail: %d\n", i, error);
- return error;
- }
-
- sw_checksum += checksum;
- }
-
- /* Wait WDT reset and power on reset */
- msleep(600);
-
- error = data->ops->finish_fw_update(client, &data->fw_completion);
- if (error)
- return error;
-
- error = data->ops->get_checksum(client, true, &fw_checksum);
- if (error)
- return error;
-
- if (sw_checksum != fw_checksum) {
- dev_err(dev, "checksum diff sw=[%04X], fw=[%04X]\n",
- sw_checksum, fw_checksum);
- return -EIO;
- }
-
- return 0;
-}
-
-static int elan_update_firmware(struct elan_tp_data *data,
- const struct firmware *fw)
-{
- struct i2c_client *client = data->client;
- int retval;
-
- dev_dbg(&client->dev, "Starting firmware update....\n");
-
- disable_irq(client->irq);
- data->in_fw_update = true;
-
- retval = __elan_update_firmware(data, fw);
- if (retval) {
- dev_err(&client->dev, "firmware update failed: %d\n", retval);
- data->ops->iap_reset(client);
- } else {
- /* Reinitialize TP after fw is updated */
- elan_initialize(data);
- elan_query_device_info(data);
- }
-
- data->in_fw_update = false;
- enable_irq(client->irq);
-
- return retval;
-}
-
-
-/*
- *******************************************************************
- * SYSFS attributes
- *******************************************************************
- */
-static ssize_t elan_sysfs_read_fw_checksum(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
-
- return sprintf(buf, "0x%04x\n", data->fw_checksum);
-}
-
-static ssize_t elan_sysfs_read_product_id(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
-
- return sprintf(buf, ETP_PRODUCT_ID_FORMAT_STRING "\n",
- data->product_id);
-}
-
-static ssize_t elan_sysfs_read_fw_ver(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
-
- return sprintf(buf, "%d.0\n", data->fw_version);
-}
-
-static ssize_t elan_sysfs_read_sm_ver(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
-
- return sprintf(buf, "%d.0\n", data->sm_version);
-}
-
-static ssize_t elan_sysfs_read_iap_ver(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
-
- return sprintf(buf, "%d.0\n", data->iap_version);
-}
-
-static ssize_t elan_sysfs_update_fw(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
- const struct firmware *fw;
- int error;
- const u8 *fw_signature;
- static const u8 signature[] = {0xAA, 0x55, 0xCC, 0x33, 0xFF, 0xFF};
-
- /* Look for a firmware with the product id appended. */
- char *full_fw_name = kasprintf(GFP_KERNEL,
- "%s_" ETP_PRODUCT_ID_FORMAT_STRING ".%s",
- ETP_FW_BASENAME, data->product_id, ETP_FW_EXTENSION);
- if (!full_fw_name) {
- dev_err(dev, "failed fw filename memory allocation.");
- return -ENOMEM;
- }
- error = request_firmware(&fw, full_fw_name, dev);
-
- /* If that failed, fallback for backward compatibility. */
- if (error)
- error = request_firmware(&fw, ETP_FALLBACK_FW_NAME, dev);
-
- if (error) {
- dev_err(dev, "cannot load firmware '%s' or '%s': %d\n",
- full_fw_name, ETP_FALLBACK_FW_NAME, error);
- kfree(full_fw_name);
- return error;
- }
- kfree(full_fw_name);
-
- /* Firmware file must match signature data */
- 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,
- (int)sizeof(signature), fw_signature);
- error = -EBADF;
- goto out_release_fw;
- }
-
- error = mutex_lock_interruptible(&data->sysfs_mutex);
- if (error)
- goto out_release_fw;
-
- error = elan_update_firmware(data, fw);
-
- mutex_unlock(&data->sysfs_mutex);
-
-out_release_fw:
- release_firmware(fw);
- return error?: count;
-}
-
-static ssize_t calibrate_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct elan_tp_data *data = i2c_get_clientdata(client);
- int tries = 20;
- int retval;
- int error;
- u8 val[3];
-
- retval = mutex_lock_interruptible(&data->sysfs_mutex);
- if (retval)
- return retval;
-
- disable_irq(client->irq);
-
- data->mode |= ETP_ENABLE_CALIBRATE;
- retval = data->ops->set_mode(client, data->mode);
- if (retval) {
- dev_err(dev, "failed to enable calibration mode: %d\n",
- retval);
- goto out;
- }
-
- retval = data->ops->calibrate(client);
- if (retval) {
- dev_err(dev, "failed to start calibration: %d\n",
- retval);
- goto out_disable_calibrate;
- }
-
- val[0] = 0xff;
- do {
- /* Wait 250ms before checking if calibration has completed. */
- msleep(250);
-
- retval = data->ops->calibrate_result(client, val);
- if (retval)
- dev_err(dev, "failed to check calibration result: %d\n",
- retval);
- else if (val[0] == 0)
- break; /* calibration done */
-
- } while (--tries);
-
- if (tries == 0) {
- dev_err(dev, "failed to calibrate. Timeout.\n");
- retval = -ETIMEDOUT;
- }
-
-out_disable_calibrate:
- data->mode &= ~ETP_ENABLE_CALIBRATE;
- error = data->ops->set_mode(data->client, data->mode);
- if (error) {
- dev_err(dev, "failed to disable calibration mode: %d\n",
- error);
- if (!retval)
- retval = error;
- }
-out:
- enable_irq(client->irq);
- mutex_unlock(&data->sysfs_mutex);
- return retval ?: count;
-}
-
-static ssize_t elan_sysfs_read_mode(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
- int error;
- enum tp_mode mode;
-
- error = mutex_lock_interruptible(&data->sysfs_mutex);
- if (error)
- return error;
-
- error = data->ops->iap_get_mode(data->client, &mode);
-
- mutex_unlock(&data->sysfs_mutex);
-
- if (error)
- return error;
-
- return sprintf(buf, "%d\n", (int)mode);
-}
-
-static DEVICE_ATTR(product_id, S_IRUGO, elan_sysfs_read_product_id, NULL);
-static DEVICE_ATTR(firmware_version, S_IRUGO, elan_sysfs_read_fw_ver, NULL);
-static DEVICE_ATTR(sample_version, S_IRUGO, elan_sysfs_read_sm_ver, NULL);
-static DEVICE_ATTR(iap_version, S_IRUGO, elan_sysfs_read_iap_ver, NULL);
-static DEVICE_ATTR(fw_checksum, S_IRUGO, elan_sysfs_read_fw_checksum, NULL);
-static DEVICE_ATTR(mode, S_IRUGO, elan_sysfs_read_mode, NULL);
-static DEVICE_ATTR(update_fw, S_IWUSR, NULL, elan_sysfs_update_fw);
-static DEVICE_ATTR_WO(calibrate);
-
-static struct attribute *elan_sysfs_entries[] = {
- &dev_attr_product_id.attr,
- &dev_attr_firmware_version.attr,
- &dev_attr_sample_version.attr,
- &dev_attr_iap_version.attr,
- &dev_attr_fw_checksum.attr,
- &dev_attr_calibrate.attr,
- &dev_attr_mode.attr,
- &dev_attr_update_fw.attr,
- NULL,
-};
-
-static const struct attribute_group elan_sysfs_group = {
- .attrs = elan_sysfs_entries,
-};
-
-static ssize_t acquire_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct elan_tp_data *data = i2c_get_clientdata(client);
- int error;
- int retval;
-
- retval = mutex_lock_interruptible(&data->sysfs_mutex);
- if (retval)
- return retval;
-
- disable_irq(client->irq);
-
- data->baseline_ready = false;
-
- data->mode |= ETP_ENABLE_CALIBRATE;
- retval = data->ops->set_mode(data->client, data->mode);
- if (retval) {
- dev_err(dev, "Failed to enable calibration mode to get baseline: %d\n",
- retval);
- goto out;
- }
-
- msleep(250);
-
- retval = data->ops->get_baseline_data(data->client, true,
- &data->max_baseline);
- if (retval) {
- dev_err(dev, "Failed to read max baseline form device: %d\n",
- retval);
- goto out_disable_calibrate;
- }
-
- retval = data->ops->get_baseline_data(data->client, false,
- &data->min_baseline);
- if (retval) {
- dev_err(dev, "Failed to read min baseline form device: %d\n",
- retval);
- goto out_disable_calibrate;
- }
-
- data->baseline_ready = true;
-
-out_disable_calibrate:
- data->mode &= ~ETP_ENABLE_CALIBRATE;
- error = data->ops->set_mode(data->client, data->mode);
- if (error) {
- dev_err(dev, "Failed to disable calibration mode after acquiring baseline: %d\n",
- error);
- if (!retval)
- retval = error;
- }
-out:
- enable_irq(client->irq);
- mutex_unlock(&data->sysfs_mutex);
- return retval ?: count;
-}
-
-static ssize_t min_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
- int retval;
-
- retval = mutex_lock_interruptible(&data->sysfs_mutex);
- if (retval)
- return retval;
-
- if (!data->baseline_ready) {
- retval = -ENODATA;
- goto out;
- }
-
- retval = snprintf(buf, PAGE_SIZE, "%d", data->min_baseline);
-
-out:
- mutex_unlock(&data->sysfs_mutex);
- return retval;
-}
-
-static ssize_t max_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct elan_tp_data *data = dev_get_drvdata(dev);
- int retval;
-
- retval = mutex_lock_interruptible(&data->sysfs_mutex);
- if (retval)
- return retval;
-
- if (!data->baseline_ready) {
- retval = -ENODATA;
- goto out;
- }
-
- retval = snprintf(buf, PAGE_SIZE, "%d", data->max_baseline);
-
-out:
- mutex_unlock(&data->sysfs_mutex);
- return retval;
-}
-
-
-static DEVICE_ATTR_WO(acquire);
-static DEVICE_ATTR_RO(min);
-static DEVICE_ATTR_RO(max);
-
-static struct attribute *elan_baseline_sysfs_entries[] = {
- &dev_attr_acquire.attr,
- &dev_attr_min.attr,
- &dev_attr_max.attr,
- NULL,
-};
-
-static const struct attribute_group elan_baseline_sysfs_group = {
- .name = "baseline",
- .attrs = elan_baseline_sysfs_entries,
-};
-
-static const struct attribute_group *elan_sysfs_groups[] = {
- &elan_sysfs_group,
- &elan_baseline_sysfs_group,
- NULL
-};
-
-/*
- ******************************************************************
- * Elan isr functions
- ******************************************************************
- */
-static void elan_report_contact(struct elan_tp_data *data,
- int contact_num, bool contact_valid,
- 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;
- unsigned int scaled_pressure;
-
-
- if (contact_valid) {
- pos_x = ((finger_data[0] & 0xf0) << 4) |
- finger_data[1];
- pos_y = ((finger_data[0] & 0x0f) << 8) |
- finger_data[2];
- mk_x = (finger_data[3] & 0x0f);
- mk_y = (finger_data[3] >> 4);
- pressure = finger_data[4];
-
- if (pos_x > data->max_x || pos_y > data->max_y) {
- dev_dbg(input->dev.parent,
- "[%d] x=%d y=%d over max (%d, %d)",
- contact_num, pos_x, pos_y,
- data->max_x, data->max_y);
- return;
- }
-
- /*
- * To avoid treating large finger as palm, let's reduce the
- * width x and y per trace.
- */
- area_x = mk_x * (data->width_x - ETP_FWIDTH_REDUCE);
- area_y = mk_y * (data->width_y - ETP_FWIDTH_REDUCE);
-
- major = max(area_x, area_y);
- minor = min(area_x, area_y);
-
- 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, 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);
- } else {
- input_mt_slot(input, contact_num);
- input_mt_report_slot_state(input, MT_TOOL_FINGER, false);
- }
-}
-
-static void elan_report_absolute(struct elan_tp_data *data, u8 *packet)
-{
- struct input_dev *input = data->input;
- u8 *finger_data = &packet[ETP_FINGER_DATA_OFFSET];
- int i;
- u8 tp_info = packet[ETP_TOUCH_INFO_OFFSET];
- 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);
-
- if (contact_valid)
- finger_data += ETP_FINGER_DATA_LEN;
- }
-
- input_report_key(input, BTN_LEFT, tp_info & 0x01);
- input_report_abs(input, ABS_DISTANCE, hover_event != 0);
- input_mt_report_pointer_emulation(input, true);
- input_sync(input);
-}
-
-static irqreturn_t elan_isr(int irq, void *dev_id)
-{
- struct elan_tp_data *data = dev_id;
- struct device *dev = &data->client->dev;
- int error;
- u8 report[ETP_MAX_REPORT_LEN];
-
- /*
- * When device is connected to i2c bus, when all IAP page writes
- * complete, the driver will receive interrupt and must read
- * 0000 to confirm that IAP is finished.
- */
- if (data->in_fw_update) {
- complete(&data->fw_completion);
- goto out;
- }
-
- error = data->ops->get_report(data->client, report);
- if (error)
- goto out;
-
- if (report[ETP_REPORT_ID_OFFSET] != ETP_REPORT_ID)
- dev_err(dev, "invalid report id data (%x)\n",
- report[ETP_REPORT_ID_OFFSET]);
- else
- elan_report_absolute(data, report);
-
-out:
- return IRQ_HANDLED;
-}
-
-/*
- ******************************************************************
- * Elan initialization functions
- ******************************************************************
- */
-static int elan_setup_input_device(struct elan_tp_data *data)
-{
- struct device *dev = &data->client->dev;
- struct input_dev *input;
- unsigned int max_width = max(data->width_x, data->width_y);
- unsigned int min_width = min(data->width_x, data->width_y);
- int error;
-
- input = devm_input_allocate_device(dev);
- if (!input)
- return -ENOMEM;
-
- input->name = "Elan Touchpad";
- input->id.bustype = BUS_I2C;
- input->inhibit = elan_inhibit;
- input->uninhibit = elan_uninhibit;
- input_set_drvdata(input, data);
-
- error = input_mt_init_slots(input, ETP_MAX_FINGERS,
- INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED);
- if (error) {
- dev_err(dev, "failed to initialize MT slots: %d\n", error);
- return error;
- }
-
- __set_bit(EV_ABS, input->evbit);
- __set_bit(INPUT_PROP_POINTER, input->propbit);
- __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
- __set_bit(BTN_LEFT, input->keybit);
-
- /* Set up ST parameters */
- input_set_abs_params(input, ABS_X, 0, data->max_x, 0, 0);
- input_set_abs_params(input, ABS_Y, 0, data->max_y, 0, 0);
- input_abs_set_res(input, ABS_X, data->x_res);
- input_abs_set_res(input, ABS_Y, data->y_res);
- input_set_abs_params(input, ABS_PRESSURE, 0, ETP_MAX_PRESSURE, 0, 0);
- input_set_abs_params(input, ABS_TOOL_WIDTH, 0, ETP_FINGER_WIDTH, 0, 0);
- input_set_abs_params(input, ABS_DISTANCE, 0, 1, 0, 0);
-
- /* And MT parameters */
- input_set_abs_params(input, ABS_MT_POSITION_X, 0, data->max_x, 0, 0);
- input_set_abs_params(input, ABS_MT_POSITION_Y, 0, data->max_y, 0, 0);
- input_abs_set_res(input, ABS_MT_POSITION_X, data->x_res);
- input_abs_set_res(input, ABS_MT_POSITION_Y, data->y_res);
- input_set_abs_params(input, ABS_MT_PRESSURE, 0,
- ETP_MAX_PRESSURE, 0, 0);
- input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
- ETP_FINGER_WIDTH * max_width, 0, 0);
- input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0,
- ETP_FINGER_WIDTH * min_width, 0, 0);
-
- data->input = input;
-
- return 0;
-}
-
-static void elan_disable_regulator(void *_data)
-{
- struct elan_tp_data *data = _data;
-
- regulator_disable(data->vcc);
-}
-
-static void elan_remove_sysfs_groups(void *_data)
-{
- struct elan_tp_data *data = _data;
-
- sysfs_remove_groups(&data->client->dev.kobj, elan_sysfs_groups);
-}
-
-static int elan_probe(struct i2c_client *client,
- const struct i2c_device_id *dev_id)
-{
- const struct elan_transport_ops *transport_ops;
- struct device *dev = &client->dev;
- struct elan_tp_data *data;
- unsigned long irqflags;
- int error;
-
- if (IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_I2C) &&
- i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- transport_ops = &elan_i2c_ops;
- } else if (IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) &&
- i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_SMBUS_BLOCK_DATA |
- I2C_FUNC_SMBUS_I2C_BLOCK)) {
- transport_ops = &elan_smbus_ops;
- } else {
- dev_err(dev, "not a supported I2C/SMBus adapter\n");
- return -EIO;
- }
-
- data = devm_kzalloc(&client->dev, sizeof(struct elan_tp_data),
- GFP_KERNEL);
- if (!data) {
- dev_err(dev, "allocate TP data structure fail.\n");
- return -ENOMEM;
- }
-
- i2c_set_clientdata(client, data);
-
- data->ops = transport_ops;
- data->client = client;
- init_completion(&data->fw_completion);
- mutex_init(&data->sysfs_mutex);
-
- data->vcc = devm_regulator_get(&client->dev, "vcc");
- if (IS_ERR(data->vcc)) {
- error = PTR_ERR(data->vcc);
- if (error != -EPROBE_DEFER)
- dev_err(&client->dev,
- "Failed to get 'vcc' regulator: %d\n",
- error);
- return error;
- }
-
- error = regulator_enable(data->vcc);
- if (error) {
- dev_err(&client->dev,
- "Failed to enable regulator: %d\n", error);
- return error;
- }
-
- error = devm_add_action(&client->dev,
- elan_disable_regulator, data);
- if (error) {
- regulator_disable(data->vcc);
- dev_err(&client->dev,
- "Failed to add disable regulator action: %d\n",
- error);
- return error;
- }
-
- /*
- * Unfortunately vendors like to interchange touchpad parts
- * between factory runs, but keep the same DTS, so we can't
- * be quite sure that the device is actually present in the
- * system even if it is described in the DTS.
- * Before trying to properly initialize the touchpad let's
- * first see it there is anything at the given address.
- */
- if (client->dev.of_node) {
- union i2c_smbus_data dummy;
-
- error = i2c_smbus_xfer(client->adapter, client->addr, 0,
- I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE,
- &dummy);
- if (error) {
- dev_dbg(&client->dev,
- "basic IO failed (%d), assuming device is not present\n",
- error);
- return -ENXIO;
- }
- }
-
- /* Initialize the touchpad. */
- error = elan_initialize(data);
- if (error)
- return error;
-
- error = elan_query_device_info(data);
- if (error)
- return error;
-
- error = elan_query_device_parameters(data);
- if (error)
- return error;
-
- dev_dbg(&client->dev,
- "Elan Touchpad Information:\n"
- " Module product ID: 0x%04x\n"
- " Firmware Version: 0x%04x\n"
- " Sample Version: 0x%04x\n"
- " IAP Version: 0x%04x\n"
- " Max ABS X,Y: %d,%d\n"
- " Width X,Y: %d,%d\n"
- " Resolution X,Y: %d,%d (dots/mm)\n",
- data->product_id,
- data->fw_version,
- data->sm_version,
- data->iap_version,
- data->max_x, data->max_y,
- data->width_x, data->width_y,
- data->x_res, data->y_res);
-
- /* Set up input device properties based on queried parameters. */
- error = elan_setup_input_device(data);
- if (error)
- return error;
-
- /*
- * Systems using device tree should set up interrupt via DTS,
- * the rest will use the default falling edge interrupts.
- */
- irqflags = client->dev.of_node ? 0 : IRQF_TRIGGER_FALLING;
-
- error = devm_request_threaded_irq(&client->dev, client->irq,
- NULL, elan_isr,
- irqflags | IRQF_ONESHOT,
- client->name, data);
- if (error) {
- dev_err(&client->dev, "cannot register irq=%d\n", client->irq);
- return error;
- }
-
- error = sysfs_create_groups(&client->dev.kobj, elan_sysfs_groups);
- if (error) {
- dev_err(&client->dev, "failed to create sysfs attributes: %d\n",
- error);
- return error;
- }
-
- error = devm_add_action(&client->dev,
- elan_remove_sysfs_groups, data);
- if (error) {
- elan_remove_sysfs_groups(data);
- dev_err(&client->dev,
- "Failed to add sysfs cleanup action: %d\n",
- error);
- return error;
- }
-
- error = input_register_device(data->input);
- if (error) {
- dev_err(&client->dev, "failed to register input device: %d\n",
- error);
- return error;
- }
-
- /*
- * Systems using device tree should set up wakeup via DTS,
- * the rest will configure device as wakeup source by default.
- */
- if (!client->dev.of_node)
- device_init_wakeup(&client->dev, true);
-
- return 0;
-}
-
-static int __maybe_unused elan_suspend(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct elan_tp_data *data = i2c_get_clientdata(client);
- int ret;
-
- /*
- * We are taking the mutex to make sure sysfs operations are
- * complete before we attempt to bring the device into low[er]
- * power mode.
- */
- ret = mutex_lock_interruptible(&data->sysfs_mutex);
- if (ret)
- return ret;
-
- if (!data->input->inhibited) {
-
- disable_irq(client->irq);
-
- if (device_may_wakeup(dev)) {
- ret = elan_sleep(data);
- /* Enable wake from IRQ */
- data->irq_wake = (enable_irq_wake(client->irq) == 0);
- } else {
- ret = elan_disable_power(data);
- }
- }
-
- mutex_unlock(&data->sysfs_mutex);
- return ret;
-}
-
-static int __maybe_unused elan_resume(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct elan_tp_data *data = i2c_get_clientdata(client);
- int ret = 0;
-
- /* Defer activation if inhibited */
- if (!data->input->inhibited) {
-
- if (data->irq_wake) {
- disable_irq_wake(client->irq);
- data->irq_wake = false;
- }
-
- ret = elan_reactivate(data);
- enable_irq(client->irq);
- }
-
- return ret;
-}
-
-static SIMPLE_DEV_PM_OPS(elan_pm_ops, elan_suspend, elan_resume);
-
-static const struct i2c_device_id elan_id[] = {
- { DRIVER_NAME, 0 },
- { },
-};
-MODULE_DEVICE_TABLE(i2c, elan_id);
-
-#ifdef CONFIG_ACPI
-static const struct acpi_device_id elan_acpi_id[] = {
- { "ELAN0000", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(acpi, elan_acpi_id);
-#endif
-
-#ifdef CONFIG_OF
-static const struct of_device_id elan_of_match[] = {
- { .compatible = "elan,i2c_touchpad" },
- { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, elan_of_match);
-#endif
-
-static struct i2c_driver elan_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- .pm = &elan_pm_ops,
- .acpi_match_table = ACPI_PTR(elan_acpi_id),
- .of_match_table = of_match_ptr(elan_of_match),
- },
- .probe = elan_probe,
- .id_table = elan_id,
-};
-
-module_i2c_driver(elan_driver);
-
-MODULE_AUTHOR("Duson Lin <dusonlin@emc.com.tw>");
-MODULE_DESCRIPTION("Elan I2C/SMBus Touchpad driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(ELAN_DRIVER_VERSION);
+++ /dev/null
-/*
- * Elan I2C/SMBus Touchpad driver - I2C interface
- *
- * Copyright (c) 2013 ELAN Microelectronics Corp.
- *
- * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
- *
- * Based on cyapa driver:
- * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
- * copyright (c) 2011-2012 Google, Inc.
- *
- * 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.
- *
- * Trademarks are the property of their respective owners.
- */
-
-#include <linux/completion.h>
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <asm/unaligned.h>
-
-#include "elan_i2c.h"
-
-/* Elan i2c commands */
-#define ETP_I2C_RESET 0x0100
-#define ETP_I2C_WAKE_UP 0x0800
-#define ETP_I2C_SLEEP 0x0801
-#define ETP_I2C_DESC_CMD 0x0001
-#define ETP_I2C_REPORT_DESC_CMD 0x0002
-#define ETP_I2C_STAND_CMD 0x0005
-#define ETP_I2C_UNIQUEID_CMD 0x0101
-#define ETP_I2C_FW_VERSION_CMD 0x0102
-#define ETP_I2C_SM_VERSION_CMD 0x0103
-#define ETP_I2C_XY_TRACENUM_CMD 0x0105
-#define ETP_I2C_MAX_X_AXIS_CMD 0x0106
-#define ETP_I2C_MAX_Y_AXIS_CMD 0x0107
-#define ETP_I2C_RESOLUTION_CMD 0x0108
-#define ETP_I2C_PRESSURE_CMD 0x010A
-#define ETP_I2C_IAP_VERSION_CMD 0x0110
-#define ETP_I2C_SET_CMD 0x0300
-#define ETP_I2C_POWER_CMD 0x0307
-#define ETP_I2C_FW_CHECKSUM_CMD 0x030F
-#define ETP_I2C_IAP_CTRL_CMD 0x0310
-#define ETP_I2C_IAP_CMD 0x0311
-#define ETP_I2C_IAP_RESET_CMD 0x0314
-#define ETP_I2C_IAP_CHECKSUM_CMD 0x0315
-#define ETP_I2C_CALIBRATE_CMD 0x0316
-#define ETP_I2C_MAX_BASELINE_CMD 0x0317
-#define ETP_I2C_MIN_BASELINE_CMD 0x0318
-
-#define ETP_I2C_REPORT_LEN 34
-#define ETP_I2C_DESC_LENGTH 30
-#define ETP_I2C_REPORT_DESC_LENGTH 158
-#define ETP_I2C_INF_LENGTH 2
-#define ETP_I2C_IAP_PASSWORD 0x1EA5
-#define ETP_I2C_IAP_RESET 0xF0F0
-#define ETP_I2C_MAIN_MODE_ON (1 << 9)
-#define ETP_I2C_IAP_REG_L 0x01
-#define ETP_I2C_IAP_REG_H 0x06
-
-static int elan_i2c_read_block(struct i2c_client *client,
- u16 reg, u8 *val, u16 len)
-{
- __le16 buf[] = {
- cpu_to_le16(reg),
- };
- struct i2c_msg msgs[] = {
- {
- .addr = client->addr,
- .flags = client->flags & I2C_M_TEN,
- .len = sizeof(buf),
- .buf = (u8 *)buf,
- },
- {
- .addr = client->addr,
- .flags = (client->flags & I2C_M_TEN) | I2C_M_RD,
- .len = len,
- .buf = val,
- }
- };
- int ret;
-
- ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
- return ret == ARRAY_SIZE(msgs) ? 0 : (ret < 0 ? ret : -EIO);
-}
-
-static int elan_i2c_read_cmd(struct i2c_client *client, u16 reg, u8 *val)
-{
- int retval;
-
- retval = elan_i2c_read_block(client, reg, val, ETP_I2C_INF_LENGTH);
- if (retval < 0) {
- dev_err(&client->dev, "reading cmd (0x%04x) fail.\n", reg);
- return retval;
- }
-
- return 0;
-}
-
-static int elan_i2c_write_cmd(struct i2c_client *client, u16 reg, u16 cmd)
-{
- __le16 buf[] = {
- cpu_to_le16(reg),
- cpu_to_le16(cmd),
- };
- struct i2c_msg msg = {
- .addr = client->addr,
- .flags = client->flags & I2C_M_TEN,
- .len = sizeof(buf),
- .buf = (u8 *)buf,
- };
- int ret;
-
- ret = i2c_transfer(client->adapter, &msg, 1);
- if (ret != 1) {
- dev_err(&client->dev, "writing cmd (0x%04x) fail.\n", reg);
- return ret < 0 ? ret : -EIO;
- }
-
- return 0;
-}
-
-static int elan_i2c_initialize(struct i2c_client *client)
-{
- struct device *dev = &client->dev;
- int error;
- u8 val[256];
-
- error = elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD, ETP_I2C_RESET);
- if (error) {
- dev_err(dev, "device reset failed: %d\n", error);
- return error;
- }
-
- /* Wait for the device to reset */
- msleep(100);
-
- /* get reset acknowledgement 0000 */
- error = i2c_master_recv(client, val, ETP_I2C_INF_LENGTH);
- if (error < 0) {
- dev_err(dev, "failed to read reset response: %d\n", error);
- return error;
- }
-
- error = elan_i2c_read_block(client, ETP_I2C_DESC_CMD,
- val, ETP_I2C_DESC_LENGTH);
- if (error) {
- dev_err(dev, "cannot get device descriptor: %d\n", error);
- return error;
- }
-
- error = elan_i2c_read_block(client, ETP_I2C_REPORT_DESC_CMD,
- val, ETP_I2C_REPORT_DESC_LENGTH);
- if (error) {
- dev_err(dev, "fetching report descriptor failed.: %d\n", error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_i2c_sleep_control(struct i2c_client *client, bool sleep)
-{
- return elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD,
- sleep ? ETP_I2C_SLEEP : ETP_I2C_WAKE_UP);
-}
-
-static int elan_i2c_power_control(struct i2c_client *client, bool enable)
-{
- u8 val[2];
- u16 reg;
- int error;
-
- error = elan_i2c_read_cmd(client, ETP_I2C_POWER_CMD, val);
- if (error) {
- dev_err(&client->dev,
- "failed to read current power state: %d\n",
- error);
- return error;
- }
-
- reg = le16_to_cpup((__le16 *)val);
- if (enable)
- reg &= ~ETP_DISABLE_POWER;
- else
- reg |= ETP_DISABLE_POWER;
-
- error = elan_i2c_write_cmd(client, ETP_I2C_POWER_CMD,
- cpu_to_le16(reg));
- if (error) {
- dev_err(&client->dev,
- "failed to write current power state: %d\n",
- error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_i2c_set_mode(struct i2c_client *client, u8 mode)
-{
- return elan_i2c_write_cmd(client, ETP_I2C_SET_CMD, mode);
-}
-
-
-static int elan_i2c_calibrate(struct i2c_client *client)
-{
- return elan_i2c_write_cmd(client, ETP_I2C_CALIBRATE_CMD, 1);
-}
-
-static int elan_i2c_calibrate_result(struct i2c_client *client, u8 *val)
-{
- return elan_i2c_read_block(client, ETP_I2C_CALIBRATE_CMD, val, 1);
-}
-
-static int elan_i2c_get_baseline_data(struct i2c_client *client,
- bool max_baseline, u8 *value)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client,
- max_baseline ? ETP_I2C_MAX_BASELINE_CMD :
- ETP_I2C_MIN_BASELINE_CMD,
- val);
- if (error)
- return error;
-
- *value = le16_to_cpup((__le16 *)val);
-
- return 0;
-}
-
-static int elan_i2c_get_version(struct i2c_client *client,
- bool iap, u8 *version)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client,
- iap ? ETP_I2C_IAP_VERSION_CMD :
- ETP_I2C_FW_VERSION_CMD,
- val);
- if (error) {
- dev_err(&client->dev, "failed to get %s version: %d\n",
- iap ? "IAP" : "FW", error);
- return error;
- }
-
- *version = val[0];
- return 0;
-}
-
-static int elan_i2c_get_sm_version(struct i2c_client *client, u8 *ic_type,
- u8 *version)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client, ETP_I2C_SM_VERSION_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get SM version: %d\n", error);
- return error;
- }
-
- *version = val[0];
- *ic_type = val[1];
- return 0;
-}
-
-static int elan_i2c_get_product_id(struct i2c_client *client, u8 *id)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client, ETP_I2C_UNIQUEID_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get product ID: %d\n", error);
- return error;
- }
-
- *id = val[0];
- return 0;
-}
-
-static int elan_i2c_get_checksum(struct i2c_client *client,
- bool iap, u16 *csum)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client,
- iap ? ETP_I2C_IAP_CHECKSUM_CMD :
- ETP_I2C_FW_CHECKSUM_CMD,
- val);
- if (error) {
- dev_err(&client->dev, "failed to get %s checksum: %d\n",
- iap ? "IAP" : "FW", error);
- return error;
- }
-
- *csum = le16_to_cpup((__le16 *)val);
- return 0;
-}
-
-static int elan_i2c_get_max(struct i2c_client *client,
- unsigned int *max_x, unsigned int *max_y)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client, ETP_I2C_MAX_X_AXIS_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get X dimension: %d\n", error);
- return error;
- }
-
- *max_x = le16_to_cpup((__le16 *)val) & 0x0fff;
-
- error = elan_i2c_read_cmd(client, ETP_I2C_MAX_Y_AXIS_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get Y dimension: %d\n", error);
- return error;
- }
-
- *max_y = le16_to_cpup((__le16 *)val) & 0x0fff;
-
- return 0;
-}
-
-static int elan_i2c_get_resolution(struct i2c_client *client,
- u8 *hw_res_x, u8 *hw_res_y)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client, ETP_I2C_RESOLUTION_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get resolution: %d\n", error);
- return error;
- }
-
- *hw_res_x = val[0];
- *hw_res_y = val[1];
-
- return 0;
-}
-
-static int elan_i2c_get_num_traces(struct i2c_client *client,
- unsigned int *x_traces,
- unsigned int *y_traces)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client, ETP_I2C_XY_TRACENUM_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get trace info: %d\n", error);
- return error;
- }
-
- *x_traces = val[0];
- *y_traces = val[1];
-
- return 0;
-}
-
-static int elan_i2c_get_pressure_adjustment(struct i2c_client *client,
- int *adjustment)
-{
- int error;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client, ETP_I2C_PRESSURE_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get pressure format: %d\n",
- error);
- return error;
- }
- if ((val[0] >> 4) & 0x1)
- *adjustment = 0;
- else
- *adjustment = ETP_PRESSURE_OFFSET;
-
- return 0;
-}
-
-static int elan_i2c_iap_get_mode(struct i2c_client *client, enum tp_mode *mode)
-{
- int error;
- u16 constant;
- u8 val[3];
-
- error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
- if (error) {
- dev_err(&client->dev,
- "failed to read iap control register: %d\n",
- error);
- return error;
- }
-
- constant = le16_to_cpup((__le16 *)val);
- dev_dbg(&client->dev, "iap control reg: 0x%04x.\n", constant);
-
- *mode = (constant & ETP_I2C_MAIN_MODE_ON) ? MAIN_MODE : IAP_MODE;
-
- return 0;
-}
-
-static int elan_i2c_iap_reset(struct i2c_client *client)
-{
- int error;
-
- error = elan_i2c_write_cmd(client, ETP_I2C_IAP_RESET_CMD,
- ETP_I2C_IAP_RESET);
- if (error) {
- dev_err(&client->dev, "cannot reset IC: %d\n", error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_i2c_set_flash_key(struct i2c_client *client)
-{
- int error;
-
- error = elan_i2c_write_cmd(client, ETP_I2C_IAP_CMD,
- ETP_I2C_IAP_PASSWORD);
- if (error) {
- dev_err(&client->dev, "cannot set flash key: %d\n", error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_i2c_prepare_fw_update(struct i2c_client *client)
-{
- struct device *dev = &client->dev;
- int error;
- enum tp_mode mode;
- u8 val[3];
- u16 password;
-
- /* Get FW in which mode (IAP_MODE/MAIN_MODE) */
- error = elan_i2c_iap_get_mode(client, &mode);
- if (error)
- return error;
-
- if (mode == IAP_MODE) {
- /* Reset IC */
- error = elan_i2c_iap_reset(client);
- if (error)
- return error;
-
- msleep(30);
- }
-
- /* Set flash key*/
- error = elan_i2c_set_flash_key(client);
- if (error)
- return error;
-
- /* Wait for F/W IAP initialization */
- msleep(mode == MAIN_MODE ? 100 : 30);
-
- /* Check if we are in IAP mode or not */
- error = elan_i2c_iap_get_mode(client, &mode);
- if (error)
- return error;
-
- if (mode == MAIN_MODE) {
- dev_err(dev, "wrong mode: %d\n", mode);
- return -EIO;
- }
-
- /* Set flash key again */
- error = elan_i2c_set_flash_key(client);
- if (error)
- return error;
-
- /* Wait for F/W IAP initialization */
- msleep(30);
-
- /* read back to check we actually enabled successfully. */
- error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CMD, val);
- if (error) {
- dev_err(dev, "cannot read iap password: %d\n",
- error);
- return error;
- }
-
- password = le16_to_cpup((__le16 *)val);
- if (password != ETP_I2C_IAP_PASSWORD) {
- dev_err(dev, "wrong iap password: 0x%X\n", password);
- return -EIO;
- }
-
- return 0;
-}
-
-static int elan_i2c_write_fw_block(struct i2c_client *client,
- const u8 *page, u16 checksum, int idx)
-{
- struct device *dev = &client->dev;
- u8 page_store[ETP_FW_PAGE_SIZE + 4];
- u8 val[3];
- u16 result;
- int ret, error;
-
- 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);
- /* recode checksum at last two bytes */
- put_unaligned_le16(checksum, &page_store[ETP_FW_PAGE_SIZE + 2]);
-
- ret = i2c_master_send(client, page_store, sizeof(page_store));
- if (ret != sizeof(page_store)) {
- error = ret < 0 ? ret : -EIO;
- dev_err(dev, "Failed to write page %d: %d\n", idx, error);
- return error;
- }
-
- /* Wait for F/W to update one page ROM data. */
- msleep(20);
-
- 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;
- }
-
- 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;
- }
-
- return 0;
-}
-
-static int elan_i2c_finish_fw_update(struct i2c_client *client,
- struct completion *completion)
-{
- struct device *dev = &client->dev;
- long ret;
- int error;
- int len;
- u8 buffer[ETP_I2C_INF_LENGTH];
-
- completion->done = 0;
- enable_irq(client->irq);
-
- error = elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD, ETP_I2C_RESET);
- if (!error)
- ret = wait_for_completion_interruptible_timeout(completion,
- msecs_to_jiffies(300));
- disable_irq(client->irq);
-
- if (error) {
- dev_err(dev, "device reset failed: %d\n", error);
- return error;
- } else if (ret == 0) {
- error = -ETIMEDOUT;
- dev_err(dev, "timeout waiting for device reset\n");
- return -ETIMEDOUT;
- } else if (ret < 0) {
- error = ret;
- dev_err(dev, "error waiting for device reset: %d\n", error);
- return error;
- }
-
- if (error)
- return error;
-
- len = i2c_master_recv(client, buffer, ETP_I2C_INF_LENGTH);
- if (len != ETP_I2C_INF_LENGTH) {
- error = len < 0 ? len : -EIO;
- dev_err(dev, "failed to read INT signal: %d (%d)\n",
- error, len);
- return error;
- }
-
- return 0;
-}
-
-static int elan_i2c_get_report(struct i2c_client *client, u8 *report)
-{
- int len;
-
- len = i2c_master_recv(client, report, ETP_I2C_REPORT_LEN);
- if (len < 0) {
- dev_err(&client->dev, "failed to read report data: %d\n", len);
- return len;
- }
-
- if (len != ETP_I2C_REPORT_LEN) {
- dev_err(&client->dev,
- "wrong report length (%d vs %d expected)\n",
- len, ETP_I2C_REPORT_LEN);
- return -EIO;
- }
-
- return 0;
-}
-
-const struct elan_transport_ops elan_i2c_ops = {
- .initialize = elan_i2c_initialize,
- .sleep_control = elan_i2c_sleep_control,
- .power_control = elan_i2c_power_control,
- .set_mode = elan_i2c_set_mode,
-
- .calibrate = elan_i2c_calibrate,
- .calibrate_result = elan_i2c_calibrate_result,
-
- .get_baseline_data = elan_i2c_get_baseline_data,
-
- .get_version = elan_i2c_get_version,
- .get_sm_version = elan_i2c_get_sm_version,
- .get_product_id = elan_i2c_get_product_id,
- .get_checksum = elan_i2c_get_checksum,
- .get_pressure_adjustment = elan_i2c_get_pressure_adjustment,
-
- .get_max = elan_i2c_get_max,
- .get_resolution = elan_i2c_get_resolution,
- .get_num_traces = elan_i2c_get_num_traces,
-
- .iap_get_mode = elan_i2c_iap_get_mode,
- .iap_reset = elan_i2c_iap_reset,
-
- .prepare_fw_update = elan_i2c_prepare_fw_update,
- .write_fw_block = elan_i2c_write_fw_block,
- .finish_fw_update = elan_i2c_finish_fw_update,
-
- .get_report = elan_i2c_get_report,
-};
+++ /dev/null
-/*
- * Elan I2C/SMBus Touchpad driver - SMBus interface
- *
- * Copyright (c) 2013 ELAN Microelectronics Corp.
- *
- * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
- *
- * Based on cyapa driver:
- * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
- * copyright (c) 2011-2012 Google, Inc.
- *
- * 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.
- *
- * Trademarks are the property of their respective owners.
- */
-
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-
-#include "elan_i2c.h"
-
-/* Elan SMbus commands */
-#define ETP_SMBUS_IAP_CMD 0x00
-#define ETP_SMBUS_ENABLE_TP 0x20
-#define ETP_SMBUS_SLEEP_CMD 0x21
-#define ETP_SMBUS_IAP_PASSWORD_WRITE 0x29
-#define ETP_SMBUS_IAP_PASSWORD_READ 0x80
-#define ETP_SMBUS_WRITE_FW_BLOCK 0x2A
-#define ETP_SMBUS_IAP_RESET_CMD 0x2B
-#define ETP_SMBUS_RANGE_CMD 0xA0
-#define ETP_SMBUS_FW_VERSION_CMD 0xA1
-#define ETP_SMBUS_XY_TRACENUM_CMD 0xA2
-#define ETP_SMBUS_SM_VERSION_CMD 0xA3
-#define ETP_SMBUS_UNIQUEID_CMD 0xA3
-#define ETP_SMBUS_RESOLUTION_CMD 0xA4
-#define ETP_SMBUS_HELLOPACKET_CMD 0xA7
-#define ETP_SMBUS_PACKET_QUERY 0xA8
-#define ETP_SMBUS_IAP_VERSION_CMD 0xAC
-#define ETP_SMBUS_IAP_CTRL_CMD 0xAD
-#define ETP_SMBUS_IAP_CHECKSUM_CMD 0xAE
-#define ETP_SMBUS_FW_CHECKSUM_CMD 0xAF
-#define ETP_SMBUS_MAX_BASELINE_CMD 0xC3
-#define ETP_SMBUS_MIN_BASELINE_CMD 0xC4
-#define ETP_SMBUS_CALIBRATE_QUERY 0xC5
-
-#define ETP_SMBUS_REPORT_LEN 32
-#define ETP_SMBUS_REPORT_OFFSET 2
-#define ETP_SMBUS_HELLOPACKET_LEN 5
-#define ETP_SMBUS_IAP_PASSWORD 0x1234
-#define ETP_SMBUS_IAP_MODE_ON (1 << 6)
-
-static int elan_smbus_initialize(struct i2c_client *client)
-{
- u8 check[ETP_SMBUS_HELLOPACKET_LEN] = { 0x55, 0x55, 0x55, 0x55, 0x55 };
- u8 values[ETP_SMBUS_HELLOPACKET_LEN] = { 0, 0, 0, 0, 0 };
- int len, error;
-
- /* Get hello packet */
- len = i2c_smbus_read_block_data(client,
- ETP_SMBUS_HELLOPACKET_CMD, values);
- if (len != ETP_SMBUS_HELLOPACKET_LEN) {
- dev_err(&client->dev, "hello packet length fail: %d\n", len);
- error = len < 0 ? len : -EIO;
- return error;
- }
-
- /* compare hello packet */
- if (memcmp(values, check, ETP_SMBUS_HELLOPACKET_LEN)) {
- dev_err(&client->dev, "hello packet fail [%*px]\n",
- ETP_SMBUS_HELLOPACKET_LEN, values);
- return -ENXIO;
- }
-
- /* enable tp */
- error = i2c_smbus_write_byte(client, ETP_SMBUS_ENABLE_TP);
- if (error) {
- dev_err(&client->dev, "failed to enable touchpad: %d\n", error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_smbus_set_mode(struct i2c_client *client, u8 mode)
-{
- u8 cmd[4] = { 0x00, 0x07, 0x00, mode };
-
- return i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
- sizeof(cmd), cmd);
-}
-
-static int elan_smbus_sleep_control(struct i2c_client *client, bool sleep)
-{
- if (sleep)
- return i2c_smbus_write_byte(client, ETP_SMBUS_SLEEP_CMD);
- else
- return 0; /* XXX should we send ETP_SMBUS_ENABLE_TP here? */
-}
-
-static int elan_smbus_power_control(struct i2c_client *client, bool enable)
-{
- return 0; /* A no-op */
-}
-
-static int elan_smbus_calibrate(struct i2c_client *client)
-{
- u8 cmd[4] = { 0x00, 0x08, 0x00, 0x01 };
-
- return i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
- sizeof(cmd), cmd);
-}
-
-static int elan_smbus_calibrate_result(struct i2c_client *client, u8 *val)
-{
- int error;
-
- error = i2c_smbus_read_block_data(client,
- ETP_SMBUS_CALIBRATE_QUERY, val);
- if (error < 0)
- return error;
-
- return 0;
-}
-
-static int elan_smbus_get_baseline_data(struct i2c_client *client,
- bool max_baseline, u8 *value)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client,
- max_baseline ?
- ETP_SMBUS_MAX_BASELINE_CMD :
- ETP_SMBUS_MIN_BASELINE_CMD,
- val);
- if (error < 0)
- return error;
-
- *value = be16_to_cpup((__be16 *)val);
-
- return 0;
-}
-
-static int elan_smbus_get_version(struct i2c_client *client,
- bool iap, u8 *version)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client,
- iap ? ETP_SMBUS_IAP_VERSION_CMD :
- ETP_SMBUS_FW_VERSION_CMD,
- val);
- if (error < 0) {
- dev_err(&client->dev, "failed to get %s version: %d\n",
- iap ? "IAP" : "FW", error);
- return error;
- }
-
- *version = val[2];
- return 0;
-}
-
-static int elan_smbus_get_sm_version(struct i2c_client *client, u8 *ic_type,
- u8 *version)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client,
- ETP_SMBUS_SM_VERSION_CMD, val);
- if (error < 0) {
- dev_err(&client->dev, "failed to get SM version: %d\n", error);
- return error;
- }
-
- *version = val[0];
- *ic_type = val[1];
- return 0;
-}
-
-static int elan_smbus_get_product_id(struct i2c_client *client, u8 *id)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client,
- ETP_SMBUS_UNIQUEID_CMD, val);
- if (error < 0) {
- dev_err(&client->dev, "failed to get product ID: %d\n", error);
- return error;
- }
-
- *id = val[1];
- return 0;
-}
-
-static int elan_smbus_get_checksum(struct i2c_client *client,
- bool iap, u16 *csum)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client,
- iap ? ETP_SMBUS_FW_CHECKSUM_CMD :
- ETP_SMBUS_IAP_CHECKSUM_CMD,
- val);
- if (error < 0) {
- dev_err(&client->dev, "failed to get %s checksum: %d\n",
- iap ? "IAP" : "FW", error);
- return error;
- }
-
- *csum = be16_to_cpup((__be16 *)val);
- return 0;
-}
-
-static int elan_smbus_get_max(struct i2c_client *client,
- unsigned int *max_x, unsigned int *max_y)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client, ETP_SMBUS_RANGE_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get dimensions: %d\n", error);
- return error;
- }
-
- *max_x = (0x0f & val[0]) << 8 | val[1];
- *max_y = (0xf0 & val[0]) << 4 | val[2];
-
- return 0;
-}
-
-static int elan_smbus_get_resolution(struct i2c_client *client,
- u8 *hw_res_x, u8 *hw_res_y)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client,
- ETP_SMBUS_RESOLUTION_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get resolution: %d\n", error);
- return error;
- }
-
- *hw_res_x = val[1] & 0x0F;
- *hw_res_y = (val[1] & 0xF0) >> 4;
-
- return 0;
-}
-
-static int elan_smbus_get_num_traces(struct i2c_client *client,
- unsigned int *x_traces,
- unsigned int *y_traces)
-{
- int error;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client,
- ETP_SMBUS_XY_TRACENUM_CMD, val);
- if (error) {
- dev_err(&client->dev, "failed to get trace info: %d\n", error);
- return error;
- }
-
- *x_traces = val[1];
- *y_traces = val[2];
-
- return 0;
-}
-
-static int elan_smbus_get_pressure_adjustment(struct i2c_client *client,
- int *adjustment)
-{
- *adjustment = ETP_PRESSURE_OFFSET;
- return 0;
-}
-
-static int elan_smbus_iap_get_mode(struct i2c_client *client,
- enum tp_mode *mode)
-{
- int error;
- u16 constant;
- u8 val[3];
-
- error = i2c_smbus_read_block_data(client, ETP_SMBUS_IAP_CTRL_CMD, val);
- if (error < 0) {
- dev_err(&client->dev, "failed to read iap ctrol register: %d\n",
- error);
- return error;
- }
-
- constant = be16_to_cpup((__be16 *)val);
- dev_dbg(&client->dev, "iap control reg: 0x%04x.\n", constant);
-
- *mode = (constant & ETP_SMBUS_IAP_MODE_ON) ? IAP_MODE : MAIN_MODE;
-
- return 0;
-}
-
-static int elan_smbus_iap_reset(struct i2c_client *client)
-{
- int error;
-
- error = i2c_smbus_write_byte(client, ETP_SMBUS_IAP_RESET_CMD);
- if (error) {
- dev_err(&client->dev, "cannot reset IC: %d\n", error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_smbus_set_flash_key(struct i2c_client *client)
-{
- int error;
- u8 cmd[4] = { 0x00, 0x0B, 0x00, 0x5A };
-
- error = i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
- sizeof(cmd), cmd);
- if (error) {
- dev_err(&client->dev, "cannot set flash key: %d\n", error);
- return error;
- }
-
- return 0;
-}
-
-static int elan_smbus_prepare_fw_update(struct i2c_client *client)
-{
- struct device *dev = &client->dev;
- int len;
- int error;
- enum tp_mode mode;
- u8 val[3];
- u8 cmd[4] = {0x0F, 0x78, 0x00, 0x06};
- u16 password;
-
- /* Get FW in which mode (IAP_MODE/MAIN_MODE) */
- error = elan_smbus_iap_get_mode(client, &mode);
- if (error)
- return error;
-
- if (mode == MAIN_MODE) {
-
- /* set flash key */
- error = elan_smbus_set_flash_key(client);
- if (error)
- return error;
-
- /* write iap password */
- if (i2c_smbus_write_byte(client,
- ETP_SMBUS_IAP_PASSWORD_WRITE) < 0) {
- dev_err(dev, "cannot write iap password\n");
- return -EIO;
- }
-
- error = i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
- sizeof(cmd), cmd);
- if (error) {
- dev_err(dev, "failed to write iap password: %d\n",
- error);
- return error;
- }
-
- /*
- * Read back password to make sure we enabled flash
- * successfully.
- */
- len = i2c_smbus_read_block_data(client,
- ETP_SMBUS_IAP_PASSWORD_READ,
- val);
- if (len != sizeof(ETP_SMBUS_IAP_PASSWORD)) {
- error = len < 0 ? len : -EIO;
- dev_err(dev, "failed to read iap password: %d\n",
- error);
- return error;
- }
-
- password = be16_to_cpup((__be16 *)val);
- if (password != ETP_SMBUS_IAP_PASSWORD) {
- dev_err(dev, "wrong iap password = 0x%X\n", password);
- return -EIO;
- }
-
- /* Wait 30ms for MAIN_MODE change to IAP_MODE */
- msleep(30);
- }
-
- error = elan_smbus_set_flash_key(client);
- if (error)
- return error;
-
- /* Reset IC */
- error = elan_smbus_iap_reset(client);
- if (error)
- return error;
-
- return 0;
-}
-
-
-static int elan_smbus_write_fw_block(struct i2c_client *client,
- const u8 *page, u16 checksum, int idx)
-{
- struct device *dev = &client->dev;
- int error;
- u16 result;
- u8 val[3];
-
- /*
- * Due to the limitation of smbus protocol limiting
- * transfer to 32 bytes at a time, we must split block
- * in 2 transfers.
- */
- error = i2c_smbus_write_block_data(client,
- ETP_SMBUS_WRITE_FW_BLOCK,
- ETP_FW_PAGE_SIZE / 2,
- page);
- if (error) {
- dev_err(dev, "Failed to write page %d (part %d): %d\n",
- idx, 1, error);
- return error;
- }
-
- error = i2c_smbus_write_block_data(client,
- ETP_SMBUS_WRITE_FW_BLOCK,
- ETP_FW_PAGE_SIZE / 2,
- page + ETP_FW_PAGE_SIZE / 2);
- if (error) {
- dev_err(dev, "Failed to write page %d (part %d): %d\n",
- idx, 2, error);
- return error;
- }
-
-
- /* Wait for F/W to update one page ROM data. */
- usleep_range(8000, 10000);
-
- error = i2c_smbus_read_block_data(client,
- ETP_SMBUS_IAP_CTRL_CMD, val);
- if (error < 0) {
- dev_err(dev, "Failed to read IAP write result: %d\n",
- error);
- return error;
- }
-
- result = be16_to_cpup((__be16 *)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;
- }
-
- return 0;
-}
-
-static int elan_smbus_get_report(struct i2c_client *client, u8 *report)
-{
- int len;
-
- len = i2c_smbus_read_block_data(client,
- ETP_SMBUS_PACKET_QUERY,
- &report[ETP_SMBUS_REPORT_OFFSET]);
- if (len < 0) {
- dev_err(&client->dev, "failed to read report data: %d\n", len);
- return len;
- }
-
- if (len != ETP_SMBUS_REPORT_LEN) {
- dev_err(&client->dev,
- "wrong report length (%d vs %d expected)\n",
- len, ETP_SMBUS_REPORT_LEN);
- return -EIO;
- }
-
- return 0;
-}
-
-static int elan_smbus_finish_fw_update(struct i2c_client *client,
- struct completion *fw_completion)
-{
- /* No special handling unlike I2C transport */
- return 0;
-}
-
-const struct elan_transport_ops elan_smbus_ops = {
- .initialize = elan_smbus_initialize,
- .sleep_control = elan_smbus_sleep_control,
- .power_control = elan_smbus_power_control,
- .set_mode = elan_smbus_set_mode,
-
- .calibrate = elan_smbus_calibrate,
- .calibrate_result = elan_smbus_calibrate_result,
-
- .get_baseline_data = elan_smbus_get_baseline_data,
-
- .get_version = elan_smbus_get_version,
- .get_sm_version = elan_smbus_get_sm_version,
- .get_product_id = elan_smbus_get_product_id,
- .get_checksum = elan_smbus_get_checksum,
- .get_pressure_adjustment = elan_smbus_get_pressure_adjustment,
-
- .get_max = elan_smbus_get_max,
- .get_resolution = elan_smbus_get_resolution,
- .get_num_traces = elan_smbus_get_num_traces,
-
- .iap_get_mode = elan_smbus_iap_get_mode,
- .iap_reset = elan_smbus_iap_reset,
-
- .prepare_fw_update = elan_smbus_prepare_fw_update,
- .write_fw_block = elan_smbus_write_fw_block,
- .finish_fw_update = elan_smbus_finish_fw_update,
-
- .get_report = elan_smbus_get_report,
-};
projects / firefly-linux-kernel-4.4.55.git / commitdiff