drivers/input/mouse/Kconfig | 18 - drivers/input/mouse/Makefile | 1 - drivers/input/mouse/synaptics_i2c.c | 664 ---------------------------- 3 files changed, 683 deletions(-)
The board support for the device using this Synaptics controller (eXeda
mobile device) has been removed long time ago, it is time to remove the
driver as well.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/mouse/Kconfig | 18 -
drivers/input/mouse/Makefile | 1 -
drivers/input/mouse/synaptics_i2c.c | 664 ----------------------------
3 files changed, 683 deletions(-)
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index 833b643f0616..3638a5ebb51f 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -404,24 +404,6 @@ config MOUSE_MAPLE
To compile this driver as a module choose M here: the module will be
called maplemouse.
-config MOUSE_SYNAPTICS_I2C
- tristate "Synaptics I2C Touchpad support"
- depends on I2C
- help
- This driver supports Synaptics I2C touchpad controller on eXeda
- mobile device.
- The device will not work the synaptics X11 driver because
- (i) it reports only relative coordinates and has no capabilities
- to report absolute coordinates
- (ii) the eXeda device itself uses Xfbdev as X Server and it does
- not allow using xf86-input-* drivers.
-
- Say y here if you have eXeda device and want to use a Synaptics
- I2C Touchpad.
-
- To compile this driver as a module, choose M here: the
- module will be called synaptics_i2c.
-
config MOUSE_SYNAPTICS_USB
tristate "Synaptics USB device support"
depends on USB_ARCH_HAS_HCD
diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
index a1336d5bee6f..4d6251fbe38b 100644
--- a/drivers/input/mouse/Makefile
+++ b/drivers/input/mouse/Makefile
@@ -19,7 +19,6 @@ obj-$(CONFIG_MOUSE_PC110PAD) += pc110pad.o
obj-$(CONFIG_MOUSE_PS2) += psmouse.o
obj-$(CONFIG_MOUSE_RISCPC) += rpcmouse.o
obj-$(CONFIG_MOUSE_SERIAL) += sermouse.o
-obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o
obj-$(CONFIG_MOUSE_SYNAPTICS_USB) += synaptics_usb.o
obj-$(CONFIG_MOUSE_VSXXXAA) += vsxxxaa.o
diff --git a/drivers/input/mouse/synaptics_i2c.c b/drivers/input/mouse/synaptics_i2c.c
deleted file mode 100644
index a0d707e47d93..000000000000
--- a/drivers/input/mouse/synaptics_i2c.c
+++ /dev/null
@@ -1,664 +0,0 @@
-/*
- * Synaptics touchpad with I2C interface
- *
- * Copyright (C) 2009 Compulab, Ltd.
- * Mike Rapoport <mike@compulab.co.il>
- * Igor Grinberg <grinberg@compulab.co.il>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive for
- * more details.
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/delay.h>
-#include <linux/workqueue.h>
-#include <linux/slab.h>
-#include <linux/pm.h>
-
-#define DRIVER_NAME "synaptics_i2c"
-/* maximum product id is 15 characters */
-#define PRODUCT_ID_LENGTH 15
-#define REGISTER_LENGTH 8
-
-/*
- * after soft reset, we should wait for 1 ms
- * before the device becomes operational
- */
-#define SOFT_RESET_DELAY_US 3000
-/* and after hard reset, we should wait for max 500ms */
-#define HARD_RESET_DELAY_MS 500
-
-/* Registers by SMBus address */
-#define PAGE_SEL_REG 0xff
-#define DEVICE_STATUS_REG 0x09
-
-/* Registers by RMI address */
-#define DEV_CONTROL_REG 0x0000
-#define INTERRUPT_EN_REG 0x0001
-#define ERR_STAT_REG 0x0002
-#define INT_REQ_STAT_REG 0x0003
-#define DEV_COMMAND_REG 0x0004
-
-#define RMI_PROT_VER_REG 0x0200
-#define MANUFACT_ID_REG 0x0201
-#define PHYS_INT_VER_REG 0x0202
-#define PROD_PROPERTY_REG 0x0203
-#define INFO_QUERY_REG0 0x0204
-#define INFO_QUERY_REG1 (INFO_QUERY_REG0 + 1)
-#define INFO_QUERY_REG2 (INFO_QUERY_REG0 + 2)
-#define INFO_QUERY_REG3 (INFO_QUERY_REG0 + 3)
-
-#define PRODUCT_ID_REG0 0x0210
-#define PRODUCT_ID_REG1 (PRODUCT_ID_REG0 + 1)
-#define PRODUCT_ID_REG2 (PRODUCT_ID_REG0 + 2)
-#define PRODUCT_ID_REG3 (PRODUCT_ID_REG0 + 3)
-#define PRODUCT_ID_REG4 (PRODUCT_ID_REG0 + 4)
-#define PRODUCT_ID_REG5 (PRODUCT_ID_REG0 + 5)
-#define PRODUCT_ID_REG6 (PRODUCT_ID_REG0 + 6)
-#define PRODUCT_ID_REG7 (PRODUCT_ID_REG0 + 7)
-#define PRODUCT_ID_REG8 (PRODUCT_ID_REG0 + 8)
-#define PRODUCT_ID_REG9 (PRODUCT_ID_REG0 + 9)
-#define PRODUCT_ID_REG10 (PRODUCT_ID_REG0 + 10)
-#define PRODUCT_ID_REG11 (PRODUCT_ID_REG0 + 11)
-#define PRODUCT_ID_REG12 (PRODUCT_ID_REG0 + 12)
-#define PRODUCT_ID_REG13 (PRODUCT_ID_REG0 + 13)
-#define PRODUCT_ID_REG14 (PRODUCT_ID_REG0 + 14)
-#define PRODUCT_ID_REG15 (PRODUCT_ID_REG0 + 15)
-
-#define DATA_REG0 0x0400
-#define ABS_PRESSURE_REG 0x0401
-#define ABS_MSB_X_REG 0x0402
-#define ABS_LSB_X_REG (ABS_MSB_X_REG + 1)
-#define ABS_MSB_Y_REG 0x0404
-#define ABS_LSB_Y_REG (ABS_MSB_Y_REG + 1)
-#define REL_X_REG 0x0406
-#define REL_Y_REG 0x0407
-
-#define DEV_QUERY_REG0 0x1000
-#define DEV_QUERY_REG1 (DEV_QUERY_REG0 + 1)
-#define DEV_QUERY_REG2 (DEV_QUERY_REG0 + 2)
-#define DEV_QUERY_REG3 (DEV_QUERY_REG0 + 3)
-#define DEV_QUERY_REG4 (DEV_QUERY_REG0 + 4)
-#define DEV_QUERY_REG5 (DEV_QUERY_REG0 + 5)
-#define DEV_QUERY_REG6 (DEV_QUERY_REG0 + 6)
-#define DEV_QUERY_REG7 (DEV_QUERY_REG0 + 7)
-#define DEV_QUERY_REG8 (DEV_QUERY_REG0 + 8)
-
-#define GENERAL_2D_CONTROL_REG 0x1041
-#define SENSOR_SENSITIVITY_REG 0x1044
-#define SENS_MAX_POS_MSB_REG 0x1046
-#define SENS_MAX_POS_LSB_REG (SENS_MAX_POS_UPPER_REG + 1)
-
-/* Register bits */
-/* Device Control Register Bits */
-#define REPORT_RATE_1ST_BIT 6
-
-/* Interrupt Enable Register Bits (INTERRUPT_EN_REG) */
-#define F10_ABS_INT_ENA 0
-#define F10_REL_INT_ENA 1
-#define F20_INT_ENA 2
-
-/* Interrupt Request Register Bits (INT_REQ_STAT_REG | DEVICE_STATUS_REG) */
-#define F10_ABS_INT_REQ 0
-#define F10_REL_INT_REQ 1
-#define F20_INT_REQ 2
-/* Device Status Register Bits (DEVICE_STATUS_REG) */
-#define STAT_CONFIGURED 6
-#define STAT_ERROR 7
-
-/* Device Command Register Bits (DEV_COMMAND_REG) */
-#define RESET_COMMAND 0x01
-#define REZERO_COMMAND 0x02
-
-/* Data Register 0 Bits (DATA_REG0) */
-#define GESTURE 3
-
-/* Device Query Registers Bits */
-/* DEV_QUERY_REG3 */
-#define HAS_PALM_DETECT 1
-#define HAS_MULTI_FING 2
-#define HAS_SCROLLER 4
-#define HAS_2D_SCROLL 5
-
-/* General 2D Control Register Bits (GENERAL_2D_CONTROL_REG) */
-#define NO_DECELERATION 1
-#define REDUCE_REPORTING 3
-#define NO_FILTER 5
-
-/* Function Masks */
-/* Device Control Register Masks (DEV_CONTROL_REG) */
-#define REPORT_RATE_MSK 0xc0
-#define SLEEP_MODE_MSK 0x07
-
-/* Device Sleep Modes */
-#define FULL_AWAKE 0x0
-#define NORMAL_OP 0x1
-#define LOW_PWR_OP 0x2
-#define VERY_LOW_PWR_OP 0x3
-#define SENS_SLEEP 0x4
-#define SLEEP_MOD 0x5
-#define DEEP_SLEEP 0x6
-#define HIBERNATE 0x7
-
-/* Interrupt Register Mask */
-/* (INT_REQ_STAT_REG | DEVICE_STATUS_REG | INTERRUPT_EN_REG) */
-#define INT_ENA_REQ_MSK 0x07
-#define INT_ENA_ABS_MSK 0x01
-#define INT_ENA_REL_MSK 0x02
-#define INT_ENA_F20_MSK 0x04
-
-/* Device Status Register Masks (DEVICE_STATUS_REG) */
-#define CONFIGURED_MSK 0x40
-#define ERROR_MSK 0x80
-
-/* Data Register 0 Masks */
-#define FINGER_WIDTH_MSK 0xf0
-#define GESTURE_MSK 0x08
-#define SENSOR_STATUS_MSK 0x07
-
-/*
- * MSB Position Register Masks
- * ABS_MSB_X_REG | ABS_MSB_Y_REG | SENS_MAX_POS_MSB_REG |
- * DEV_QUERY_REG3 | DEV_QUERY_REG5
- */
-#define MSB_POSITION_MSK 0x1f
-
-/* Device Query Registers Masks */
-
-/* DEV_QUERY_REG2 */
-#define NUM_EXTRA_POS_MSK 0x07
-
-/* When in IRQ mode read the device every THREAD_IRQ_SLEEP_SECS */
-#define THREAD_IRQ_SLEEP_SECS 2
-#define THREAD_IRQ_SLEEP_MSECS (THREAD_IRQ_SLEEP_SECS * MSEC_PER_SEC)
-
-/*
- * When in Polling mode and no data received for NO_DATA_THRES msecs
- * reduce the polling rate to NO_DATA_SLEEP_MSECS
- */
-#define NO_DATA_THRES (MSEC_PER_SEC)
-#define NO_DATA_SLEEP_MSECS (MSEC_PER_SEC / 4)
-
-/* Control touchpad's No Deceleration option */
-static bool no_decel = true;
-module_param(no_decel, bool, 0644);
-MODULE_PARM_DESC(no_decel, "No Deceleration. Default = 1 (on)");
-
-/* Control touchpad's Reduced Reporting option */
-static bool reduce_report;
-module_param(reduce_report, bool, 0644);
-MODULE_PARM_DESC(reduce_report, "Reduced Reporting. Default = 0 (off)");
-
-/* Control touchpad's No Filter option */
-static bool no_filter;
-module_param(no_filter, bool, 0644);
-MODULE_PARM_DESC(no_filter, "No Filter. Default = 0 (off)");
-
-/*
- * touchpad Attention line is Active Low and Open Drain,
- * therefore should be connected to pulled up line
- * and the irq configuration should be set to Falling Edge Trigger
- */
-/* Control IRQ / Polling option */
-static bool polling_req;
-module_param(polling_req, bool, 0444);
-MODULE_PARM_DESC(polling_req, "Request Polling. Default = 0 (use irq)");
-
-/* Control Polling Rate */
-static int scan_rate = 80;
-module_param(scan_rate, int, 0644);
-MODULE_PARM_DESC(scan_rate, "Polling rate in times/sec. Default = 80");
-
-/* The main device structure */
-struct synaptics_i2c {
- struct i2c_client *client;
- struct input_dev *input;
- struct delayed_work dwork;
- int no_data_count;
- int no_decel_param;
- int reduce_report_param;
- int no_filter_param;
- int scan_rate_param;
- int scan_ms;
-};
-
-static inline void set_scan_rate(struct synaptics_i2c *touch, int scan_rate)
-{
- touch->scan_ms = MSEC_PER_SEC / scan_rate;
- touch->scan_rate_param = scan_rate;
-}
-
-/*
- * Driver's initial design makes no race condition possible on i2c bus,
- * so there is no need in any locking.
- * Keep it in mind, while playing with the code.
- */
-static s32 synaptics_i2c_reg_get(struct i2c_client *client, u16 reg)
-{
- int ret;
-
- ret = i2c_smbus_write_byte_data(client, PAGE_SEL_REG, reg >> 8);
- if (ret == 0)
- ret = i2c_smbus_read_byte_data(client, reg & 0xff);
-
- return ret;
-}
-
-static s32 synaptics_i2c_reg_set(struct i2c_client *client, u16 reg, u8 val)
-{
- int ret;
-
- ret = i2c_smbus_write_byte_data(client, PAGE_SEL_REG, reg >> 8);
- if (ret == 0)
- ret = i2c_smbus_write_byte_data(client, reg & 0xff, val);
-
- return ret;
-}
-
-static s32 synaptics_i2c_word_get(struct i2c_client *client, u16 reg)
-{
- int ret;
-
- ret = i2c_smbus_write_byte_data(client, PAGE_SEL_REG, reg >> 8);
- if (ret == 0)
- ret = i2c_smbus_read_word_data(client, reg & 0xff);
-
- return ret;
-}
-
-static int synaptics_i2c_config(struct i2c_client *client)
-{
- int ret, control;
- u8 int_en;
-
- /* set Report Rate to Device Highest (>=80) and Sleep to normal */
- ret = synaptics_i2c_reg_set(client, DEV_CONTROL_REG, 0xc1);
- if (ret)
- return ret;
-
- /* set Interrupt Disable to Func20 / Enable to Func10) */
- int_en = (polling_req) ? 0 : INT_ENA_ABS_MSK | INT_ENA_REL_MSK;
- ret = synaptics_i2c_reg_set(client, INTERRUPT_EN_REG, int_en);
- if (ret)
- return ret;
-
- control = synaptics_i2c_reg_get(client, GENERAL_2D_CONTROL_REG);
- /* No Deceleration */
- control |= no_decel ? 1 << NO_DECELERATION : 0;
- /* Reduced Reporting */
- control |= reduce_report ? 1 << REDUCE_REPORTING : 0;
- /* No Filter */
- control |= no_filter ? 1 << NO_FILTER : 0;
- ret = synaptics_i2c_reg_set(client, GENERAL_2D_CONTROL_REG, control);
- if (ret)
- return ret;
-
- return 0;
-}
-
-static int synaptics_i2c_reset_config(struct i2c_client *client)
-{
- int ret;
-
- /* Reset the Touchpad */
- ret = synaptics_i2c_reg_set(client, DEV_COMMAND_REG, RESET_COMMAND);
- if (ret) {
- dev_err(&client->dev, "Unable to reset device\n");
- } else {
- usleep_range(SOFT_RESET_DELAY_US, SOFT_RESET_DELAY_US + 100);
- ret = synaptics_i2c_config(client);
- if (ret)
- dev_err(&client->dev, "Unable to config device\n");
- }
-
- return ret;
-}
-
-static int synaptics_i2c_check_error(struct i2c_client *client)
-{
- int status, ret = 0;
-
- status = i2c_smbus_read_byte_data(client, DEVICE_STATUS_REG) &
- (CONFIGURED_MSK | ERROR_MSK);
-
- if (status != CONFIGURED_MSK)
- ret = synaptics_i2c_reset_config(client);
-
- return ret;
-}
-
-static bool synaptics_i2c_get_input(struct synaptics_i2c *touch)
-{
- struct input_dev *input = touch->input;
- int xy_delta, gesture;
- s32 data;
- s8 x_delta, y_delta;
-
- /* Deal with spontaneous resets and errors */
- if (synaptics_i2c_check_error(touch->client))
- return false;
-
- /* Get Gesture Bit */
- data = synaptics_i2c_reg_get(touch->client, DATA_REG0);
- gesture = (data >> GESTURE) & 0x1;
-
- /*
- * Get Relative axes. we have to get them in one shot,
- * so we get 2 bytes starting from REL_X_REG.
- */
- xy_delta = synaptics_i2c_word_get(touch->client, REL_X_REG) & 0xffff;
-
- /* Separate X from Y */
- x_delta = xy_delta & 0xff;
- y_delta = (xy_delta >> REGISTER_LENGTH) & 0xff;
-
- /* Report the button event */
- input_report_key(input, BTN_LEFT, gesture);
-
- /* Report the deltas */
- input_report_rel(input, REL_X, x_delta);
- input_report_rel(input, REL_Y, -y_delta);
- input_sync(input);
-
- return xy_delta || gesture;
-}
-
-static irqreturn_t synaptics_i2c_irq(int irq, void *dev_id)
-{
- struct synaptics_i2c *touch = dev_id;
-
- mod_delayed_work(system_wq, &touch->dwork, 0);
-
- return IRQ_HANDLED;
-}
-
-static void synaptics_i2c_check_params(struct synaptics_i2c *touch)
-{
- bool reset = false;
-
- if (scan_rate != touch->scan_rate_param)
- set_scan_rate(touch, scan_rate);
-
- if (no_decel != touch->no_decel_param) {
- touch->no_decel_param = no_decel;
- reset = true;
- }
-
- if (no_filter != touch->no_filter_param) {
- touch->no_filter_param = no_filter;
- reset = true;
- }
-
- if (reduce_report != touch->reduce_report_param) {
- touch->reduce_report_param = reduce_report;
- reset = true;
- }
-
- if (reset)
- synaptics_i2c_reset_config(touch->client);
-}
-
-/* Control the Device polling rate / Work Handler sleep time */
-static unsigned long synaptics_i2c_adjust_delay(struct synaptics_i2c *touch,
- bool have_data)
-{
- unsigned long delay, nodata_count_thres;
-
- if (polling_req) {
- delay = touch->scan_ms;
- if (have_data) {
- touch->no_data_count = 0;
- } else {
- nodata_count_thres = NO_DATA_THRES / touch->scan_ms;
- if (touch->no_data_count < nodata_count_thres)
- touch->no_data_count++;
- else
- delay = NO_DATA_SLEEP_MSECS;
- }
- return msecs_to_jiffies(delay);
- } else {
- delay = msecs_to_jiffies(THREAD_IRQ_SLEEP_MSECS);
- return round_jiffies_relative(delay);
- }
-}
-
-/* Work Handler */
-static void synaptics_i2c_work_handler(struct work_struct *work)
-{
- bool have_data;
- struct synaptics_i2c *touch =
- container_of(work, struct synaptics_i2c, dwork.work);
- unsigned long delay;
-
- synaptics_i2c_check_params(touch);
-
- have_data = synaptics_i2c_get_input(touch);
- delay = synaptics_i2c_adjust_delay(touch, have_data);
-
- /*
- * While interrupt driven, there is no real need to poll the device.
- * But touchpads are very sensitive, so there could be errors
- * related to physical environment and the attention line isn't
- * necessarily asserted. In such case we can lose the touchpad.
- * We poll the device once in THREAD_IRQ_SLEEP_SECS and
- * if error is detected, we try to reset and reconfigure the touchpad.
- */
- mod_delayed_work(system_wq, &touch->dwork, delay);
-}
-
-static int synaptics_i2c_open(struct input_dev *input)
-{
- struct synaptics_i2c *touch = input_get_drvdata(input);
- int ret;
-
- ret = synaptics_i2c_reset_config(touch->client);
- if (ret)
- return ret;
-
- if (polling_req)
- mod_delayed_work(system_wq, &touch->dwork,
- msecs_to_jiffies(NO_DATA_SLEEP_MSECS));
-
- return 0;
-}
-
-static void synaptics_i2c_close(struct input_dev *input)
-{
- struct synaptics_i2c *touch = input_get_drvdata(input);
-
- if (!polling_req)
- synaptics_i2c_reg_set(touch->client, INTERRUPT_EN_REG, 0);
-
- cancel_delayed_work_sync(&touch->dwork);
-
- /* Save some power */
- synaptics_i2c_reg_set(touch->client, DEV_CONTROL_REG, DEEP_SLEEP);
-}
-
-static void synaptics_i2c_set_input_params(struct synaptics_i2c *touch)
-{
- struct input_dev *input = touch->input;
-
- input->name = touch->client->name;
- input->phys = touch->client->adapter->name;
- input->id.bustype = BUS_I2C;
- input->id.version = synaptics_i2c_word_get(touch->client,
- INFO_QUERY_REG0);
- input->dev.parent = &touch->client->dev;
- input->open = synaptics_i2c_open;
- input->close = synaptics_i2c_close;
- input_set_drvdata(input, touch);
-
- /* Register the device as mouse */
- __set_bit(EV_REL, input->evbit);
- __set_bit(REL_X, input->relbit);
- __set_bit(REL_Y, input->relbit);
-
- /* Register device's buttons and keys */
- __set_bit(EV_KEY, input->evbit);
- __set_bit(BTN_LEFT, input->keybit);
-}
-
-static struct synaptics_i2c *synaptics_i2c_touch_create(struct i2c_client *client)
-{
- struct synaptics_i2c *touch;
-
- touch = kzalloc(sizeof(*touch), GFP_KERNEL);
- if (!touch)
- return NULL;
-
- touch->client = client;
- touch->no_decel_param = no_decel;
- touch->scan_rate_param = scan_rate;
- set_scan_rate(touch, scan_rate);
- INIT_DELAYED_WORK(&touch->dwork, synaptics_i2c_work_handler);
-
- return touch;
-}
-
-static int synaptics_i2c_probe(struct i2c_client *client)
-{
- int ret;
- struct synaptics_i2c *touch;
-
- touch = synaptics_i2c_touch_create(client);
- if (!touch)
- return -ENOMEM;
-
- ret = synaptics_i2c_reset_config(client);
- if (ret)
- goto err_mem_free;
-
- if (client->irq < 1)
- polling_req = true;
-
- touch->input = input_allocate_device();
- if (!touch->input) {
- ret = -ENOMEM;
- goto err_mem_free;
- }
-
- synaptics_i2c_set_input_params(touch);
-
- if (!polling_req) {
- dev_dbg(&touch->client->dev,
- "Requesting IRQ: %d\n", touch->client->irq);
-
- ret = request_irq(touch->client->irq, synaptics_i2c_irq,
- IRQ_TYPE_EDGE_FALLING,
- DRIVER_NAME, touch);
- if (ret) {
- dev_warn(&touch->client->dev,
- "IRQ request failed: %d, "
- "falling back to polling\n", ret);
- polling_req = true;
- synaptics_i2c_reg_set(touch->client,
- INTERRUPT_EN_REG, 0);
- }
- }
-
- if (polling_req)
- dev_dbg(&touch->client->dev,
- "Using polling at rate: %d times/sec\n", scan_rate);
-
- /* Register the device in input subsystem */
- ret = input_register_device(touch->input);
- if (ret) {
- dev_err(&client->dev,
- "Input device register failed: %d\n", ret);
- goto err_input_free;
- }
-
- i2c_set_clientdata(client, touch);
-
- return 0;
-
-err_input_free:
- input_free_device(touch->input);
-err_mem_free:
- kfree(touch);
-
- return ret;
-}
-
-static void synaptics_i2c_remove(struct i2c_client *client)
-{
- struct synaptics_i2c *touch = i2c_get_clientdata(client);
-
- if (!polling_req)
- free_irq(client->irq, touch);
-
- input_unregister_device(touch->input);
- kfree(touch);
-}
-
-static int synaptics_i2c_suspend(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct synaptics_i2c *touch = i2c_get_clientdata(client);
-
- cancel_delayed_work_sync(&touch->dwork);
-
- /* Save some power */
- synaptics_i2c_reg_set(touch->client, DEV_CONTROL_REG, DEEP_SLEEP);
-
- return 0;
-}
-
-static int synaptics_i2c_resume(struct device *dev)
-{
- int ret;
- struct i2c_client *client = to_i2c_client(dev);
- struct synaptics_i2c *touch = i2c_get_clientdata(client);
-
- ret = synaptics_i2c_reset_config(client);
- if (ret)
- return ret;
-
- mod_delayed_work(system_wq, &touch->dwork,
- msecs_to_jiffies(NO_DATA_SLEEP_MSECS));
-
- return 0;
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(synaptics_i2c_pm, synaptics_i2c_suspend,
- synaptics_i2c_resume);
-
-static const struct i2c_device_id synaptics_i2c_id_table[] = {
- { "synaptics_i2c" },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, synaptics_i2c_id_table);
-
-#ifdef CONFIG_OF
-static const struct of_device_id synaptics_i2c_of_match[] = {
- { .compatible = "synaptics,synaptics_i2c", },
- { },
-};
-MODULE_DEVICE_TABLE(of, synaptics_i2c_of_match);
-#endif
-
-static struct i2c_driver synaptics_i2c_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .of_match_table = of_match_ptr(synaptics_i2c_of_match),
- .pm = pm_sleep_ptr(&synaptics_i2c_pm),
- },
-
- .probe = synaptics_i2c_probe,
- .remove = synaptics_i2c_remove,
-
- .id_table = synaptics_i2c_id_table,
-};
-
-module_i2c_driver(synaptics_i2c_driver);
-
-MODULE_DESCRIPTION("Synaptics I2C touchpad driver");
-MODULE_AUTHOR("Mike Rapoport, Igor Grinberg, Compulab");
-MODULE_LICENSE("GPL");
-
--
2.52.0.239.gd5f0c6e74e-goog
--
DmitryOn Fri, Dec 12, 2025 at 12:50:49AM -0800, Dmitry Torokhov wrote:
> The board support for the device using this Synaptics controller (eXeda
> mobile device) has been removed long time ago, it is time to remove the
> driver as well.
>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
> ---
> drivers/input/mouse/Kconfig | 18 -
> drivers/input/mouse/Makefile | 1 -
> drivers/input/mouse/synaptics_i2c.c | 664 ----------------------------
> 3 files changed, 683 deletions(-)
>
> diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
> index 833b643f0616..3638a5ebb51f 100644
> --- a/drivers/input/mouse/Kconfig
> +++ b/drivers/input/mouse/Kconfig
> @@ -404,24 +404,6 @@ config MOUSE_MAPLE
> To compile this driver as a module choose M here: the module will be
> called maplemouse.
>
> -config MOUSE_SYNAPTICS_I2C
> - tristate "Synaptics I2C Touchpad support"
> - depends on I2C
> - help
> - This driver supports Synaptics I2C touchpad controller on eXeda
> - mobile device.
> - The device will not work the synaptics X11 driver because
> - (i) it reports only relative coordinates and has no capabilities
> - to report absolute coordinates
> - (ii) the eXeda device itself uses Xfbdev as X Server and it does
> - not allow using xf86-input-* drivers.
> -
> - Say y here if you have eXeda device and want to use a Synaptics
> - I2C Touchpad.
> -
> - To compile this driver as a module, choose M here: the
> - module will be called synaptics_i2c.
> -
> config MOUSE_SYNAPTICS_USB
> tristate "Synaptics USB device support"
> depends on USB_ARCH_HAS_HCD
> diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
> index a1336d5bee6f..4d6251fbe38b 100644
> --- a/drivers/input/mouse/Makefile
> +++ b/drivers/input/mouse/Makefile
> @@ -19,7 +19,6 @@ obj-$(CONFIG_MOUSE_PC110PAD) += pc110pad.o
> obj-$(CONFIG_MOUSE_PS2) += psmouse.o
> obj-$(CONFIG_MOUSE_RISCPC) += rpcmouse.o
> obj-$(CONFIG_MOUSE_SERIAL) += sermouse.o
> -obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o
> obj-$(CONFIG_MOUSE_SYNAPTICS_USB) += synaptics_usb.o
> obj-$(CONFIG_MOUSE_VSXXXAA) += vsxxxaa.o
>
> diff --git a/drivers/input/mouse/synaptics_i2c.c b/drivers/input/mouse/synaptics_i2c.c
> deleted file mode 100644
> index a0d707e47d93..000000000000
> --- a/drivers/input/mouse/synaptics_i2c.c
> +++ /dev/null
> @@ -1,664 +0,0 @@
> -/*
> - * Synaptics touchpad with I2C interface
> - *
> - * Copyright (C) 2009 Compulab, Ltd.
> - * Mike Rapoport <mike@compulab.co.il>
> - * Igor Grinberg <grinberg@compulab.co.il>
> - *
> - * This file is subject to the terms and conditions of the GNU General Public
> - * License. See the file COPYING in the main directory of this archive for
> - * more details.
> - */
> -
> -#include <linux/module.h>
> -#include <linux/i2c.h>
> -#include <linux/irq.h>
> -#include <linux/interrupt.h>
> -#include <linux/input.h>
> -#include <linux/delay.h>
> -#include <linux/workqueue.h>
> -#include <linux/slab.h>
> -#include <linux/pm.h>
> -
> -#define DRIVER_NAME "synaptics_i2c"
> -/* maximum product id is 15 characters */
> -#define PRODUCT_ID_LENGTH 15
> -#define REGISTER_LENGTH 8
> -
> -/*
> - * after soft reset, we should wait for 1 ms
> - * before the device becomes operational
> - */
> -#define SOFT_RESET_DELAY_US 3000
> -/* and after hard reset, we should wait for max 500ms */
> -#define HARD_RESET_DELAY_MS 500
> -
> -/* Registers by SMBus address */
> -#define PAGE_SEL_REG 0xff
> -#define DEVICE_STATUS_REG 0x09
> -
> -/* Registers by RMI address */
> -#define DEV_CONTROL_REG 0x0000
> -#define INTERRUPT_EN_REG 0x0001
> -#define ERR_STAT_REG 0x0002
> -#define INT_REQ_STAT_REG 0x0003
> -#define DEV_COMMAND_REG 0x0004
> -
> -#define RMI_PROT_VER_REG 0x0200
> -#define MANUFACT_ID_REG 0x0201
> -#define PHYS_INT_VER_REG 0x0202
> -#define PROD_PROPERTY_REG 0x0203
> -#define INFO_QUERY_REG0 0x0204
> -#define INFO_QUERY_REG1 (INFO_QUERY_REG0 + 1)
> -#define INFO_QUERY_REG2 (INFO_QUERY_REG0 + 2)
> -#define INFO_QUERY_REG3 (INFO_QUERY_REG0 + 3)
> -
> -#define PRODUCT_ID_REG0 0x0210
> -#define PRODUCT_ID_REG1 (PRODUCT_ID_REG0 + 1)
> -#define PRODUCT_ID_REG2 (PRODUCT_ID_REG0 + 2)
> -#define PRODUCT_ID_REG3 (PRODUCT_ID_REG0 + 3)
> -#define PRODUCT_ID_REG4 (PRODUCT_ID_REG0 + 4)
> -#define PRODUCT_ID_REG5 (PRODUCT_ID_REG0 + 5)
> -#define PRODUCT_ID_REG6 (PRODUCT_ID_REG0 + 6)
> -#define PRODUCT_ID_REG7 (PRODUCT_ID_REG0 + 7)
> -#define PRODUCT_ID_REG8 (PRODUCT_ID_REG0 + 8)
> -#define PRODUCT_ID_REG9 (PRODUCT_ID_REG0 + 9)
> -#define PRODUCT_ID_REG10 (PRODUCT_ID_REG0 + 10)
> -#define PRODUCT_ID_REG11 (PRODUCT_ID_REG0 + 11)
> -#define PRODUCT_ID_REG12 (PRODUCT_ID_REG0 + 12)
> -#define PRODUCT_ID_REG13 (PRODUCT_ID_REG0 + 13)
> -#define PRODUCT_ID_REG14 (PRODUCT_ID_REG0 + 14)
> -#define PRODUCT_ID_REG15 (PRODUCT_ID_REG0 + 15)
> -
> -#define DATA_REG0 0x0400
> -#define ABS_PRESSURE_REG 0x0401
> -#define ABS_MSB_X_REG 0x0402
> -#define ABS_LSB_X_REG (ABS_MSB_X_REG + 1)
> -#define ABS_MSB_Y_REG 0x0404
> -#define ABS_LSB_Y_REG (ABS_MSB_Y_REG + 1)
> -#define REL_X_REG 0x0406
> -#define REL_Y_REG 0x0407
> -
> -#define DEV_QUERY_REG0 0x1000
> -#define DEV_QUERY_REG1 (DEV_QUERY_REG0 + 1)
> -#define DEV_QUERY_REG2 (DEV_QUERY_REG0 + 2)
> -#define DEV_QUERY_REG3 (DEV_QUERY_REG0 + 3)
> -#define DEV_QUERY_REG4 (DEV_QUERY_REG0 + 4)
> -#define DEV_QUERY_REG5 (DEV_QUERY_REG0 + 5)
> -#define DEV_QUERY_REG6 (DEV_QUERY_REG0 + 6)
> -#define DEV_QUERY_REG7 (DEV_QUERY_REG0 + 7)
> -#define DEV_QUERY_REG8 (DEV_QUERY_REG0 + 8)
> -
> -#define GENERAL_2D_CONTROL_REG 0x1041
> -#define SENSOR_SENSITIVITY_REG 0x1044
> -#define SENS_MAX_POS_MSB_REG 0x1046
> -#define SENS_MAX_POS_LSB_REG (SENS_MAX_POS_UPPER_REG + 1)
> -
> -/* Register bits */
> -/* Device Control Register Bits */
> -#define REPORT_RATE_1ST_BIT 6
> -
> -/* Interrupt Enable Register Bits (INTERRUPT_EN_REG) */
> -#define F10_ABS_INT_ENA 0
> -#define F10_REL_INT_ENA 1
> -#define F20_INT_ENA 2
> -
> -/* Interrupt Request Register Bits (INT_REQ_STAT_REG | DEVICE_STATUS_REG) */
> -#define F10_ABS_INT_REQ 0
> -#define F10_REL_INT_REQ 1
> -#define F20_INT_REQ 2
> -/* Device Status Register Bits (DEVICE_STATUS_REG) */
> -#define STAT_CONFIGURED 6
> -#define STAT_ERROR 7
> -
> -/* Device Command Register Bits (DEV_COMMAND_REG) */
> -#define RESET_COMMAND 0x01
> -#define REZERO_COMMAND 0x02
> -
> -/* Data Register 0 Bits (DATA_REG0) */
> -#define GESTURE 3
> -
> -/* Device Query Registers Bits */
> -/* DEV_QUERY_REG3 */
> -#define HAS_PALM_DETECT 1
> -#define HAS_MULTI_FING 2
> -#define HAS_SCROLLER 4
> -#define HAS_2D_SCROLL 5
> -
> -/* General 2D Control Register Bits (GENERAL_2D_CONTROL_REG) */
> -#define NO_DECELERATION 1
> -#define REDUCE_REPORTING 3
> -#define NO_FILTER 5
> -
> -/* Function Masks */
> -/* Device Control Register Masks (DEV_CONTROL_REG) */
> -#define REPORT_RATE_MSK 0xc0
> -#define SLEEP_MODE_MSK 0x07
> -
> -/* Device Sleep Modes */
> -#define FULL_AWAKE 0x0
> -#define NORMAL_OP 0x1
> -#define LOW_PWR_OP 0x2
> -#define VERY_LOW_PWR_OP 0x3
> -#define SENS_SLEEP 0x4
> -#define SLEEP_MOD 0x5
> -#define DEEP_SLEEP 0x6
> -#define HIBERNATE 0x7
> -
> -/* Interrupt Register Mask */
> -/* (INT_REQ_STAT_REG | DEVICE_STATUS_REG | INTERRUPT_EN_REG) */
> -#define INT_ENA_REQ_MSK 0x07
> -#define INT_ENA_ABS_MSK 0x01
> -#define INT_ENA_REL_MSK 0x02
> -#define INT_ENA_F20_MSK 0x04
> -
> -/* Device Status Register Masks (DEVICE_STATUS_REG) */
> -#define CONFIGURED_MSK 0x40
> -#define ERROR_MSK 0x80
> -
> -/* Data Register 0 Masks */
> -#define FINGER_WIDTH_MSK 0xf0
> -#define GESTURE_MSK 0x08
> -#define SENSOR_STATUS_MSK 0x07
> -
> -/*
> - * MSB Position Register Masks
> - * ABS_MSB_X_REG | ABS_MSB_Y_REG | SENS_MAX_POS_MSB_REG |
> - * DEV_QUERY_REG3 | DEV_QUERY_REG5
> - */
> -#define MSB_POSITION_MSK 0x1f
> -
> -/* Device Query Registers Masks */
> -
> -/* DEV_QUERY_REG2 */
> -#define NUM_EXTRA_POS_MSK 0x07
> -
> -/* When in IRQ mode read the device every THREAD_IRQ_SLEEP_SECS */
> -#define THREAD_IRQ_SLEEP_SECS 2
> -#define THREAD_IRQ_SLEEP_MSECS (THREAD_IRQ_SLEEP_SECS * MSEC_PER_SEC)
> -
> -/*
> - * When in Polling mode and no data received for NO_DATA_THRES msecs
> - * reduce the polling rate to NO_DATA_SLEEP_MSECS
> - */
> -#define NO_DATA_THRES (MSEC_PER_SEC)
> -#define NO_DATA_SLEEP_MSECS (MSEC_PER_SEC / 4)
> -
> -/* Control touchpad's No Deceleration option */
> -static bool no_decel = true;
> -module_param(no_decel, bool, 0644);
> -MODULE_PARM_DESC(no_decel, "No Deceleration. Default = 1 (on)");
> -
> -/* Control touchpad's Reduced Reporting option */
> -static bool reduce_report;
> -module_param(reduce_report, bool, 0644);
> -MODULE_PARM_DESC(reduce_report, "Reduced Reporting. Default = 0 (off)");
> -
> -/* Control touchpad's No Filter option */
> -static bool no_filter;
> -module_param(no_filter, bool, 0644);
> -MODULE_PARM_DESC(no_filter, "No Filter. Default = 0 (off)");
> -
> -/*
> - * touchpad Attention line is Active Low and Open Drain,
> - * therefore should be connected to pulled up line
> - * and the irq configuration should be set to Falling Edge Trigger
> - */
> -/* Control IRQ / Polling option */
> -static bool polling_req;
> -module_param(polling_req, bool, 0444);
> -MODULE_PARM_DESC(polling_req, "Request Polling. Default = 0 (use irq)");
> -
> -/* Control Polling Rate */
> -static int scan_rate = 80;
> -module_param(scan_rate, int, 0644);
> -MODULE_PARM_DESC(scan_rate, "Polling rate in times/sec. Default = 80");
> -
> -/* The main device structure */
> -struct synaptics_i2c {
> - struct i2c_client *client;
> - struct input_dev *input;
> - struct delayed_work dwork;
> - int no_data_count;
> - int no_decel_param;
> - int reduce_report_param;
> - int no_filter_param;
> - int scan_rate_param;
> - int scan_ms;
> -};
> -
> -static inline void set_scan_rate(struct synaptics_i2c *touch, int scan_rate)
> -{
> - touch->scan_ms = MSEC_PER_SEC / scan_rate;
> - touch->scan_rate_param = scan_rate;
> -}
> -
> -/*
> - * Driver's initial design makes no race condition possible on i2c bus,
> - * so there is no need in any locking.
> - * Keep it in mind, while playing with the code.
> - */
> -static s32 synaptics_i2c_reg_get(struct i2c_client *client, u16 reg)
> -{
> - int ret;
> -
> - ret = i2c_smbus_write_byte_data(client, PAGE_SEL_REG, reg >> 8);
> - if (ret == 0)
> - ret = i2c_smbus_read_byte_data(client, reg & 0xff);
> -
> - return ret;
> -}
> -
> -static s32 synaptics_i2c_reg_set(struct i2c_client *client, u16 reg, u8 val)
> -{
> - int ret;
> -
> - ret = i2c_smbus_write_byte_data(client, PAGE_SEL_REG, reg >> 8);
> - if (ret == 0)
> - ret = i2c_smbus_write_byte_data(client, reg & 0xff, val);
> -
> - return ret;
> -}
> -
> -static s32 synaptics_i2c_word_get(struct i2c_client *client, u16 reg)
> -{
> - int ret;
> -
> - ret = i2c_smbus_write_byte_data(client, PAGE_SEL_REG, reg >> 8);
> - if (ret == 0)
> - ret = i2c_smbus_read_word_data(client, reg & 0xff);
> -
> - return ret;
> -}
> -
> -static int synaptics_i2c_config(struct i2c_client *client)
> -{
> - int ret, control;
> - u8 int_en;
> -
> - /* set Report Rate to Device Highest (>=80) and Sleep to normal */
> - ret = synaptics_i2c_reg_set(client, DEV_CONTROL_REG, 0xc1);
> - if (ret)
> - return ret;
> -
> - /* set Interrupt Disable to Func20 / Enable to Func10) */
> - int_en = (polling_req) ? 0 : INT_ENA_ABS_MSK | INT_ENA_REL_MSK;
> - ret = synaptics_i2c_reg_set(client, INTERRUPT_EN_REG, int_en);
> - if (ret)
> - return ret;
> -
> - control = synaptics_i2c_reg_get(client, GENERAL_2D_CONTROL_REG);
> - /* No Deceleration */
> - control |= no_decel ? 1 << NO_DECELERATION : 0;
> - /* Reduced Reporting */
> - control |= reduce_report ? 1 << REDUCE_REPORTING : 0;
> - /* No Filter */
> - control |= no_filter ? 1 << NO_FILTER : 0;
> - ret = synaptics_i2c_reg_set(client, GENERAL_2D_CONTROL_REG, control);
> - if (ret)
> - return ret;
> -
> - return 0;
> -}
> -
> -static int synaptics_i2c_reset_config(struct i2c_client *client)
> -{
> - int ret;
> -
> - /* Reset the Touchpad */
> - ret = synaptics_i2c_reg_set(client, DEV_COMMAND_REG, RESET_COMMAND);
> - if (ret) {
> - dev_err(&client->dev, "Unable to reset device\n");
> - } else {
> - usleep_range(SOFT_RESET_DELAY_US, SOFT_RESET_DELAY_US + 100);
> - ret = synaptics_i2c_config(client);
> - if (ret)
> - dev_err(&client->dev, "Unable to config device\n");
> - }
> -
> - return ret;
> -}
> -
> -static int synaptics_i2c_check_error(struct i2c_client *client)
> -{
> - int status, ret = 0;
> -
> - status = i2c_smbus_read_byte_data(client, DEVICE_STATUS_REG) &
> - (CONFIGURED_MSK | ERROR_MSK);
> -
> - if (status != CONFIGURED_MSK)
> - ret = synaptics_i2c_reset_config(client);
> -
> - return ret;
> -}
> -
> -static bool synaptics_i2c_get_input(struct synaptics_i2c *touch)
> -{
> - struct input_dev *input = touch->input;
> - int xy_delta, gesture;
> - s32 data;
> - s8 x_delta, y_delta;
> -
> - /* Deal with spontaneous resets and errors */
> - if (synaptics_i2c_check_error(touch->client))
> - return false;
> -
> - /* Get Gesture Bit */
> - data = synaptics_i2c_reg_get(touch->client, DATA_REG0);
> - gesture = (data >> GESTURE) & 0x1;
> -
> - /*
> - * Get Relative axes. we have to get them in one shot,
> - * so we get 2 bytes starting from REL_X_REG.
> - */
> - xy_delta = synaptics_i2c_word_get(touch->client, REL_X_REG) & 0xffff;
> -
> - /* Separate X from Y */
> - x_delta = xy_delta & 0xff;
> - y_delta = (xy_delta >> REGISTER_LENGTH) & 0xff;
> -
> - /* Report the button event */
> - input_report_key(input, BTN_LEFT, gesture);
> -
> - /* Report the deltas */
> - input_report_rel(input, REL_X, x_delta);
> - input_report_rel(input, REL_Y, -y_delta);
> - input_sync(input);
> -
> - return xy_delta || gesture;
> -}
> -
> -static irqreturn_t synaptics_i2c_irq(int irq, void *dev_id)
> -{
> - struct synaptics_i2c *touch = dev_id;
> -
> - mod_delayed_work(system_wq, &touch->dwork, 0);
> -
> - return IRQ_HANDLED;
> -}
> -
> -static void synaptics_i2c_check_params(struct synaptics_i2c *touch)
> -{
> - bool reset = false;
> -
> - if (scan_rate != touch->scan_rate_param)
> - set_scan_rate(touch, scan_rate);
> -
> - if (no_decel != touch->no_decel_param) {
> - touch->no_decel_param = no_decel;
> - reset = true;
> - }
> -
> - if (no_filter != touch->no_filter_param) {
> - touch->no_filter_param = no_filter;
> - reset = true;
> - }
> -
> - if (reduce_report != touch->reduce_report_param) {
> - touch->reduce_report_param = reduce_report;
> - reset = true;
> - }
> -
> - if (reset)
> - synaptics_i2c_reset_config(touch->client);
> -}
> -
> -/* Control the Device polling rate / Work Handler sleep time */
> -static unsigned long synaptics_i2c_adjust_delay(struct synaptics_i2c *touch,
> - bool have_data)
> -{
> - unsigned long delay, nodata_count_thres;
> -
> - if (polling_req) {
> - delay = touch->scan_ms;
> - if (have_data) {
> - touch->no_data_count = 0;
> - } else {
> - nodata_count_thres = NO_DATA_THRES / touch->scan_ms;
> - if (touch->no_data_count < nodata_count_thres)
> - touch->no_data_count++;
> - else
> - delay = NO_DATA_SLEEP_MSECS;
> - }
> - return msecs_to_jiffies(delay);
> - } else {
> - delay = msecs_to_jiffies(THREAD_IRQ_SLEEP_MSECS);
> - return round_jiffies_relative(delay);
> - }
> -}
> -
> -/* Work Handler */
> -static void synaptics_i2c_work_handler(struct work_struct *work)
> -{
> - bool have_data;
> - struct synaptics_i2c *touch =
> - container_of(work, struct synaptics_i2c, dwork.work);
> - unsigned long delay;
> -
> - synaptics_i2c_check_params(touch);
> -
> - have_data = synaptics_i2c_get_input(touch);
> - delay = synaptics_i2c_adjust_delay(touch, have_data);
> -
> - /*
> - * While interrupt driven, there is no real need to poll the device.
> - * But touchpads are very sensitive, so there could be errors
> - * related to physical environment and the attention line isn't
> - * necessarily asserted. In such case we can lose the touchpad.
> - * We poll the device once in THREAD_IRQ_SLEEP_SECS and
> - * if error is detected, we try to reset and reconfigure the touchpad.
> - */
> - mod_delayed_work(system_wq, &touch->dwork, delay);
> -}
> -
> -static int synaptics_i2c_open(struct input_dev *input)
> -{
> - struct synaptics_i2c *touch = input_get_drvdata(input);
> - int ret;
> -
> - ret = synaptics_i2c_reset_config(touch->client);
> - if (ret)
> - return ret;
> -
> - if (polling_req)
> - mod_delayed_work(system_wq, &touch->dwork,
> - msecs_to_jiffies(NO_DATA_SLEEP_MSECS));
> -
> - return 0;
> -}
> -
> -static void synaptics_i2c_close(struct input_dev *input)
> -{
> - struct synaptics_i2c *touch = input_get_drvdata(input);
> -
> - if (!polling_req)
> - synaptics_i2c_reg_set(touch->client, INTERRUPT_EN_REG, 0);
> -
> - cancel_delayed_work_sync(&touch->dwork);
> -
> - /* Save some power */
> - synaptics_i2c_reg_set(touch->client, DEV_CONTROL_REG, DEEP_SLEEP);
> -}
> -
> -static void synaptics_i2c_set_input_params(struct synaptics_i2c *touch)
> -{
> - struct input_dev *input = touch->input;
> -
> - input->name = touch->client->name;
> - input->phys = touch->client->adapter->name;
> - input->id.bustype = BUS_I2C;
> - input->id.version = synaptics_i2c_word_get(touch->client,
> - INFO_QUERY_REG0);
> - input->dev.parent = &touch->client->dev;
> - input->open = synaptics_i2c_open;
> - input->close = synaptics_i2c_close;
> - input_set_drvdata(input, touch);
> -
> - /* Register the device as mouse */
> - __set_bit(EV_REL, input->evbit);
> - __set_bit(REL_X, input->relbit);
> - __set_bit(REL_Y, input->relbit);
> -
> - /* Register device's buttons and keys */
> - __set_bit(EV_KEY, input->evbit);
> - __set_bit(BTN_LEFT, input->keybit);
> -}
> -
> -static struct synaptics_i2c *synaptics_i2c_touch_create(struct i2c_client *client)
> -{
> - struct synaptics_i2c *touch;
> -
> - touch = kzalloc(sizeof(*touch), GFP_KERNEL);
> - if (!touch)
> - return NULL;
> -
> - touch->client = client;
> - touch->no_decel_param = no_decel;
> - touch->scan_rate_param = scan_rate;
> - set_scan_rate(touch, scan_rate);
> - INIT_DELAYED_WORK(&touch->dwork, synaptics_i2c_work_handler);
> -
> - return touch;
> -}
> -
> -static int synaptics_i2c_probe(struct i2c_client *client)
> -{
> - int ret;
> - struct synaptics_i2c *touch;
> -
> - touch = synaptics_i2c_touch_create(client);
> - if (!touch)
> - return -ENOMEM;
> -
> - ret = synaptics_i2c_reset_config(client);
> - if (ret)
> - goto err_mem_free;
> -
> - if (client->irq < 1)
> - polling_req = true;
> -
> - touch->input = input_allocate_device();
> - if (!touch->input) {
> - ret = -ENOMEM;
> - goto err_mem_free;
> - }
> -
> - synaptics_i2c_set_input_params(touch);
> -
> - if (!polling_req) {
> - dev_dbg(&touch->client->dev,
> - "Requesting IRQ: %d\n", touch->client->irq);
> -
> - ret = request_irq(touch->client->irq, synaptics_i2c_irq,
> - IRQ_TYPE_EDGE_FALLING,
> - DRIVER_NAME, touch);
> - if (ret) {
> - dev_warn(&touch->client->dev,
> - "IRQ request failed: %d, "
> - "falling back to polling\n", ret);
> - polling_req = true;
> - synaptics_i2c_reg_set(touch->client,
> - INTERRUPT_EN_REG, 0);
> - }
> - }
> -
> - if (polling_req)
> - dev_dbg(&touch->client->dev,
> - "Using polling at rate: %d times/sec\n", scan_rate);
> -
> - /* Register the device in input subsystem */
> - ret = input_register_device(touch->input);
> - if (ret) {
> - dev_err(&client->dev,
> - "Input device register failed: %d\n", ret);
> - goto err_input_free;
> - }
> -
> - i2c_set_clientdata(client, touch);
> -
> - return 0;
> -
> -err_input_free:
> - input_free_device(touch->input);
> -err_mem_free:
> - kfree(touch);
> -
> - return ret;
> -}
> -
> -static void synaptics_i2c_remove(struct i2c_client *client)
> -{
> - struct synaptics_i2c *touch = i2c_get_clientdata(client);
> -
> - if (!polling_req)
> - free_irq(client->irq, touch);
> -
> - input_unregister_device(touch->input);
> - kfree(touch);
> -}
> -
> -static int synaptics_i2c_suspend(struct device *dev)
> -{
> - struct i2c_client *client = to_i2c_client(dev);
> - struct synaptics_i2c *touch = i2c_get_clientdata(client);
> -
> - cancel_delayed_work_sync(&touch->dwork);
> -
> - /* Save some power */
> - synaptics_i2c_reg_set(touch->client, DEV_CONTROL_REG, DEEP_SLEEP);
> -
> - return 0;
> -}
> -
> -static int synaptics_i2c_resume(struct device *dev)
> -{
> - int ret;
> - struct i2c_client *client = to_i2c_client(dev);
> - struct synaptics_i2c *touch = i2c_get_clientdata(client);
> -
> - ret = synaptics_i2c_reset_config(client);
> - if (ret)
> - return ret;
> -
> - mod_delayed_work(system_wq, &touch->dwork,
> - msecs_to_jiffies(NO_DATA_SLEEP_MSECS));
> -
> - return 0;
> -}
> -
> -static DEFINE_SIMPLE_DEV_PM_OPS(synaptics_i2c_pm, synaptics_i2c_suspend,
> - synaptics_i2c_resume);
> -
> -static const struct i2c_device_id synaptics_i2c_id_table[] = {
> - { "synaptics_i2c" },
> - { }
> -};
> -MODULE_DEVICE_TABLE(i2c, synaptics_i2c_id_table);
> -
> -#ifdef CONFIG_OF
> -static const struct of_device_id synaptics_i2c_of_match[] = {
> - { .compatible = "synaptics,synaptics_i2c", },
> - { },
> -};
> -MODULE_DEVICE_TABLE(of, synaptics_i2c_of_match);
> -#endif
> -
> -static struct i2c_driver synaptics_i2c_driver = {
> - .driver = {
> - .name = DRIVER_NAME,
> - .of_match_table = of_match_ptr(synaptics_i2c_of_match),
> - .pm = pm_sleep_ptr(&synaptics_i2c_pm),
> - },
> -
> - .probe = synaptics_i2c_probe,
> - .remove = synaptics_i2c_remove,
> -
> - .id_table = synaptics_i2c_id_table,
> -};
> -
> -module_i2c_driver(synaptics_i2c_driver);
> -
> -MODULE_DESCRIPTION("Synaptics I2C touchpad driver");
> -MODULE_AUTHOR("Mike Rapoport, Igor Grinberg, Compulab");
> -MODULE_LICENSE("GPL");
> -
> --
> 2.52.0.239.gd5f0c6e74e-goog
>
>
> --
> Dmitry
--
Sincerely yours,
Mike.
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