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-rw-r--r--drivers/input/touchscreen/Kconfig28
-rw-r--r--drivers/input/touchscreen/Makefile2
-rw-r--r--drivers/input/touchscreen/ad7877.c2
-rw-r--r--drivers/input/touchscreen/ad7879-spi.c1
-rw-r--r--drivers/input/touchscreen/atmel-wm97xx.c2
-rw-r--r--drivers/input/touchscreen/cy8ctmg110_ts.c6
-rw-r--r--drivers/input/touchscreen/cyttsp4_core.c208
-rw-r--r--drivers/input/touchscreen/cyttsp4_spi.c5
-rw-r--r--drivers/input/touchscreen/cyttsp_core.c2
-rw-r--r--drivers/input/touchscreen/eeti_ts.c6
-rw-r--r--drivers/input/touchscreen/egalax_ts.c2
-rw-r--r--drivers/input/touchscreen/htcpen.c4
-rw-r--r--drivers/input/touchscreen/max11801_ts.c37
-rw-r--r--drivers/input/touchscreen/st1232.c1
-rw-r--r--drivers/input/touchscreen/sur40.c466
-rw-r--r--drivers/input/touchscreen/ti_am335x_tsc.c23
-rw-r--r--drivers/input/touchscreen/tsc2005.c2
-rw-r--r--drivers/input/touchscreen/usbtouchscreen.c26
-rw-r--r--drivers/input/touchscreen/zforce_ts.c836
19 files changed, 1487 insertions, 172 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 3b9758b5f4d7..961d58d32647 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -389,7 +389,7 @@ config TOUCHSCREEN_MCS5000
config TOUCHSCREEN_MMS114
tristate "MELFAS MMS114 touchscreen"
- depends on I2C && GENERIC_HARDIRQS
+ depends on I2C
help
Say Y here if you have the MELFAS MMS114 touchscreen controller
chip in your system.
@@ -845,7 +845,7 @@ config TOUCHSCREEN_TSC_SERIO
config TOUCHSCREEN_TSC2005
tristate "TSC2005 based touchscreens"
- depends on SPI_MASTER && GENERIC_HARDIRQS
+ depends on SPI_MASTER
help
Say Y here if you have a TSC2005 based touchscreen.
@@ -906,6 +906,17 @@ config TOUCHSCREEN_STMPE
To compile this driver as a module, choose M here: the
module will be called stmpe-ts.
+config TOUCHSCREEN_SUR40
+ tristate "Samsung SUR40 (Surface 2.0/PixelSense) touchscreen"
+ depends on USB
+ select INPUT_POLLDEV
+ help
+ Say Y here if you want support for the Samsung SUR40 touchscreen
+ (also known as Microsoft Surface 2.0 or Microsoft PixelSense).
+
+ To compile this driver as a module, choose M here: the
+ module will be called sur40.
+
config TOUCHSCREEN_TPS6507X
tristate "TPS6507x based touchscreens"
depends on I2C
@@ -919,4 +930,17 @@ config TOUCHSCREEN_TPS6507X
To compile this driver as a module, choose M here: the
module will be called tps6507x_ts.
+config TOUCHSCREEN_ZFORCE
+ tristate "Neonode zForce infrared touchscreens"
+ depends on I2C
+ depends on GPIOLIB
+ help
+ Say Y here if you have a touchscreen using the zforce
+ infraread technology from Neonode.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called zforce_ts.
+
endif
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index f5216c1bf53e..62801f213346 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -54,6 +54,7 @@ obj-$(CONFIG_TOUCHSCREEN_PIXCIR) += pixcir_i2c_ts.o
obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o
obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o
obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
+obj-$(CONFIG_TOUCHSCREEN_SUR40) += sur40.o
obj-$(CONFIG_TOUCHSCREEN_TI_AM335X_TSC) += ti_am335x_tsc.o
obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
@@ -75,3 +76,4 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o
obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o
obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o
obj-$(CONFIG_TOUCHSCREEN_TPS6507X) += tps6507x-ts.o
+obj-$(CONFIG_TOUCHSCREEN_ZFORCE) += zforce_ts.o
diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index f3a174a83c82..69834dd3c313 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -806,7 +806,6 @@ err_free_irq:
err_free_mem:
input_free_device(input_dev);
kfree(ts);
- spi_set_drvdata(spi, NULL);
return err;
}
@@ -823,7 +822,6 @@ static int ad7877_remove(struct spi_device *spi)
kfree(ts);
dev_dbg(&spi->dev, "unregistered touchscreen\n");
- spi_set_drvdata(spi, NULL);
return 0;
}
diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c
index 606da5bd6115..1a7b1143536e 100644
--- a/drivers/input/touchscreen/ad7879-spi.c
+++ b/drivers/input/touchscreen/ad7879-spi.c
@@ -142,7 +142,6 @@ static int ad7879_spi_remove(struct spi_device *spi)
struct ad7879 *ts = spi_get_drvdata(spi);
ad7879_remove(ts);
- spi_set_drvdata(spi, NULL);
return 0;
}
diff --git a/drivers/input/touchscreen/atmel-wm97xx.c b/drivers/input/touchscreen/atmel-wm97xx.c
index 268a35e55d7f..279c0e42b8a7 100644
--- a/drivers/input/touchscreen/atmel-wm97xx.c
+++ b/drivers/input/touchscreen/atmel-wm97xx.c
@@ -391,7 +391,7 @@ static int __exit atmel_wm97xx_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM_SLEEP
-static int atmel_wm97xx_suspend(struct *dev)
+static int atmel_wm97xx_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct atmel_wm97xx *atmel_wm97xx = platform_get_drvdata(pdev);
diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c
index 96e0eedcc7e5..8c651985a5c4 100644
--- a/drivers/input/touchscreen/cy8ctmg110_ts.c
+++ b/drivers/input/touchscreen/cy8ctmg110_ts.c
@@ -291,7 +291,7 @@ err_free_mem:
return err;
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int cy8ctmg110_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
@@ -319,9 +319,9 @@ static int cy8ctmg110_resume(struct device *dev)
}
return 0;
}
+#endif
static SIMPLE_DEV_PM_OPS(cy8ctmg110_pm, cy8ctmg110_suspend, cy8ctmg110_resume);
-#endif
static int cy8ctmg110_remove(struct i2c_client *client)
{
@@ -351,9 +351,7 @@ static struct i2c_driver cy8ctmg110_driver = {
.driver = {
.owner = THIS_MODULE,
.name = CY8CTMG110_DRIVER_NAME,
-#ifdef CONFIG_PM
.pm = &cy8ctmg110_pm,
-#endif
},
.id_table = cy8ctmg110_idtable,
.probe = cy8ctmg110_probe,
diff --git a/drivers/input/touchscreen/cyttsp4_core.c b/drivers/input/touchscreen/cyttsp4_core.c
index edcf7993034b..a035a390f8e2 100644
--- a/drivers/input/touchscreen/cyttsp4_core.c
+++ b/drivers/input/touchscreen/cyttsp4_core.c
@@ -1246,11 +1246,7 @@ static void cyttsp4_watchdog_timer(unsigned long handle)
dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
- if (!cd)
- return;
-
- if (!work_pending(&cd->watchdog_work))
- schedule_work(&cd->watchdog_work);
+ schedule_work(&cd->watchdog_work);
return;
}
@@ -1552,106 +1548,6 @@ exit:
return rc;
}
-static int cyttsp4_core_sleep(struct cyttsp4 *cd)
-{
- int rc;
-
- rc = cyttsp4_request_exclusive(cd, cd->dev,
- CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
- if (rc < 0) {
- dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
- __func__, cd->exclusive_dev, cd->dev);
- return 0;
- }
-
- rc = cyttsp4_core_sleep_(cd);
-
- if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
- dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
- else
- dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
-
- return rc;
-}
-
-static int cyttsp4_core_wake_(struct cyttsp4 *cd)
-{
- struct device *dev = cd->dev;
- int rc;
- u8 mode;
- int t;
-
- /* Already woken? */
- mutex_lock(&cd->system_lock);
- if (cd->sleep_state == SS_SLEEP_OFF) {
- mutex_unlock(&cd->system_lock);
- return 0;
- }
- cd->int_status &= ~CY_INT_IGNORE;
- cd->int_status |= CY_INT_AWAKE;
- cd->sleep_state = SS_WAKING;
-
- if (cd->cpdata->power) {
- dev_dbg(dev, "%s: Power up HW\n", __func__);
- rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
- } else {
- dev_dbg(dev, "%s: No power function\n", __func__);
- rc = -ENOSYS;
- }
- if (rc < 0) {
- dev_err(dev, "%s: HW Power up fails r=%d\n",
- __func__, rc);
-
- /* Initiate a read transaction to wake up */
- cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
- } else
- dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
- __func__);
- mutex_unlock(&cd->system_lock);
-
- t = wait_event_timeout(cd->wait_q,
- (cd->int_status & CY_INT_AWAKE) == 0,
- msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
- if (IS_TMO(t)) {
- dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
- mutex_lock(&cd->system_lock);
- cd->int_status &= ~CY_INT_AWAKE;
- /* Try starting up */
- cyttsp4_queue_startup_(cd);
- mutex_unlock(&cd->system_lock);
- }
-
- mutex_lock(&cd->system_lock);
- cd->sleep_state = SS_SLEEP_OFF;
- mutex_unlock(&cd->system_lock);
-
- cyttsp4_start_wd_timer(cd);
-
- return 0;
-}
-
-static int cyttsp4_core_wake(struct cyttsp4 *cd)
-{
- int rc;
-
- rc = cyttsp4_request_exclusive(cd, cd->dev,
- CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
- if (rc < 0) {
- dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
- __func__, cd->exclusive_dev, cd->dev);
- return 0;
- }
-
- rc = cyttsp4_core_wake_(cd);
-
- if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
- dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
- else
- dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
-
- return rc;
-}
-
static int cyttsp4_startup_(struct cyttsp4 *cd)
{
int retry = CY_CORE_STARTUP_RETRY_COUNT;
@@ -1821,6 +1717,106 @@ static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd)
}
#if defined(CONFIG_PM_SLEEP) || defined(CONFIG_PM_RUNTIME)
+static int cyttsp4_core_sleep(struct cyttsp4 *cd)
+{
+ int rc;
+
+ rc = cyttsp4_request_exclusive(cd, cd->dev,
+ CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
+ __func__, cd->exclusive_dev, cd->dev);
+ return 0;
+ }
+
+ rc = cyttsp4_core_sleep_(cd);
+
+ if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
+ dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
+ else
+ dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
+
+ return rc;
+}
+
+static int cyttsp4_core_wake_(struct cyttsp4 *cd)
+{
+ struct device *dev = cd->dev;
+ int rc;
+ u8 mode;
+ int t;
+
+ /* Already woken? */
+ mutex_lock(&cd->system_lock);
+ if (cd->sleep_state == SS_SLEEP_OFF) {
+ mutex_unlock(&cd->system_lock);
+ return 0;
+ }
+ cd->int_status &= ~CY_INT_IGNORE;
+ cd->int_status |= CY_INT_AWAKE;
+ cd->sleep_state = SS_WAKING;
+
+ if (cd->cpdata->power) {
+ dev_dbg(dev, "%s: Power up HW\n", __func__);
+ rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
+ } else {
+ dev_dbg(dev, "%s: No power function\n", __func__);
+ rc = -ENOSYS;
+ }
+ if (rc < 0) {
+ dev_err(dev, "%s: HW Power up fails r=%d\n",
+ __func__, rc);
+
+ /* Initiate a read transaction to wake up */
+ cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
+ } else
+ dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
+ __func__);
+ mutex_unlock(&cd->system_lock);
+
+ t = wait_event_timeout(cd->wait_q,
+ (cd->int_status & CY_INT_AWAKE) == 0,
+ msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
+ if (IS_TMO(t)) {
+ dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
+ mutex_lock(&cd->system_lock);
+ cd->int_status &= ~CY_INT_AWAKE;
+ /* Try starting up */
+ cyttsp4_queue_startup_(cd);
+ mutex_unlock(&cd->system_lock);
+ }
+
+ mutex_lock(&cd->system_lock);
+ cd->sleep_state = SS_SLEEP_OFF;
+ mutex_unlock(&cd->system_lock);
+
+ cyttsp4_start_wd_timer(cd);
+
+ return 0;
+}
+
+static int cyttsp4_core_wake(struct cyttsp4 *cd)
+{
+ int rc;
+
+ rc = cyttsp4_request_exclusive(cd, cd->dev,
+ CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
+ __func__, cd->exclusive_dev, cd->dev);
+ return 0;
+ }
+
+ rc = cyttsp4_core_wake_(cd);
+
+ if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
+ dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
+ else
+ dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
+
+ return rc;
+}
+
static int cyttsp4_core_suspend(struct device *dev)
{
struct cyttsp4 *cd = dev_get_drvdata(dev);
@@ -2116,7 +2112,6 @@ error_startup:
error_request_irq:
if (cd->cpdata->init)
cd->cpdata->init(cd->cpdata, 0, dev);
- dev_set_drvdata(dev, NULL);
error_free_xfer:
kfree(cd->xfer_buf);
error_free_cd:
@@ -2154,7 +2149,6 @@ int cyttsp4_remove(struct cyttsp4 *cd)
free_irq(cd->irq, cd);
if (cd->cpdata->init)
cd->cpdata->init(cd->cpdata, 0, dev);
- dev_set_drvdata(dev, NULL);
cyttsp4_free_si_ptrs(cd);
kfree(cd);
return 0;
diff --git a/drivers/input/touchscreen/cyttsp4_spi.c b/drivers/input/touchscreen/cyttsp4_spi.c
index a71e1141d638..b19434cebbf6 100644
--- a/drivers/input/touchscreen/cyttsp4_spi.c
+++ b/drivers/input/touchscreen/cyttsp4_spi.c
@@ -171,10 +171,7 @@ static int cyttsp4_spi_probe(struct spi_device *spi)
ts = cyttsp4_probe(&cyttsp_spi_bus_ops, &spi->dev, spi->irq,
CY_SPI_DATA_BUF_SIZE);
- if (IS_ERR(ts))
- return PTR_ERR(ts);
-
- return 0;
+ return PTR_ERR_OR_ZERO(ts);
}
static int cyttsp4_spi_remove(struct spi_device *spi)
diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c
index d53e0b72a407..4204841cdc49 100644
--- a/drivers/input/touchscreen/cyttsp_core.c
+++ b/drivers/input/touchscreen/cyttsp_core.c
@@ -242,7 +242,7 @@ static int cyttsp_soft_reset(struct cyttsp *ts)
int retval;
/* wait for interrupt to set ready completion */
- INIT_COMPLETION(ts->bl_ready);
+ reinit_completion(&ts->bl_ready);
ts->state = CY_BL_STATE;
enable_irq(ts->irq);
diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c
index 8fe5086c8d2e..1ce3d29ffca5 100644
--- a/drivers/input/touchscreen/eeti_ts.c
+++ b/drivers/input/touchscreen/eeti_ts.c
@@ -264,7 +264,7 @@ static int eeti_ts_remove(struct i2c_client *client)
return 0;
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int eeti_ts_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
@@ -302,9 +302,9 @@ static int eeti_ts_resume(struct device *dev)
return 0;
}
+#endif
static SIMPLE_DEV_PM_OPS(eeti_ts_pm, eeti_ts_suspend, eeti_ts_resume);
-#endif
static const struct i2c_device_id eeti_ts_id[] = {
{ "eeti_ts", 0 },
@@ -315,9 +315,7 @@ MODULE_DEVICE_TABLE(i2c, eeti_ts_id);
static struct i2c_driver eeti_ts_driver = {
.driver = {
.name = "eeti_ts",
-#ifdef CONFIG_PM
.pm = &eeti_ts_pm,
-#endif
},
.probe = eeti_ts_probe,
.remove = eeti_ts_remove,
diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c
index ef5fcb0945e9..054d22583248 100644
--- a/drivers/input/touchscreen/egalax_ts.c
+++ b/drivers/input/touchscreen/egalax_ts.c
@@ -273,7 +273,7 @@ static struct i2c_driver egalax_ts_driver = {
.name = "egalax_ts",
.owner = THIS_MODULE,
.pm = &egalax_ts_pm_ops,
- .of_match_table = of_match_ptr(egalax_ts_dt_ids),
+ .of_match_table = egalax_ts_dt_ids,
},
.id_table = egalax_ts_id,
.probe = egalax_ts_probe,
diff --git a/drivers/input/touchscreen/htcpen.c b/drivers/input/touchscreen/htcpen.c
index 6c4fb8436957..92e2243fb77d 100644
--- a/drivers/input/touchscreen/htcpen.c
+++ b/drivers/input/touchscreen/htcpen.c
@@ -186,8 +186,6 @@ static int htcpen_isa_remove(struct device *dev, unsigned int id)
release_region(HTCPEN_PORT_INIT, 1);
release_region(HTCPEN_PORT_IRQ_CLEAR, 1);
- dev_set_drvdata(dev, NULL);
-
return 0;
}
@@ -221,7 +219,7 @@ static struct isa_driver htcpen_isa_driver = {
}
};
-static struct dmi_system_id __initdata htcshift_dmi_table[] = {
+static struct dmi_system_id htcshift_dmi_table[] __initdata = {
{
.ident = "Shift",
.matches = {
diff --git a/drivers/input/touchscreen/max11801_ts.c b/drivers/input/touchscreen/max11801_ts.c
index 00bc6caa27f5..9f84fcd08732 100644
--- a/drivers/input/touchscreen/max11801_ts.c
+++ b/drivers/input/touchscreen/max11801_ts.c
@@ -181,12 +181,11 @@ static int max11801_ts_probe(struct i2c_client *client,
struct input_dev *input_dev;
int error;
- data = kzalloc(sizeof(struct max11801_data), GFP_KERNEL);
- input_dev = input_allocate_device();
+ data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ input_dev = devm_input_allocate_device(&client->dev);
if (!data || !input_dev) {
dev_err(&client->dev, "Failed to allocate memory\n");
- error = -ENOMEM;
- goto err_free_mem;
+ return -ENOMEM;
}
data->client = client;
@@ -205,38 +204,21 @@ static int max11801_ts_probe(struct i2c_client *client,
max11801_ts_phy_init(data);
- error = request_threaded_irq(client->irq, NULL, max11801_ts_interrupt,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- "max11801_ts", data);
+ error = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+ max11801_ts_interrupt,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ "max11801_ts", data);
if (error) {
dev_err(&client->dev, "Failed to register interrupt\n");
- goto err_free_mem;
+ return error;
}
error = input_register_device(data->input_dev);
if (error)
- goto err_free_irq;
+ return error;
i2c_set_clientdata(client, data);
return 0;
-
-err_free_irq:
- free_irq(client->irq, data);
-err_free_mem:
- input_free_device(input_dev);
- kfree(data);
- return error;
-}
-
-static int max11801_ts_remove(struct i2c_client *client)
-{
- struct max11801_data *data = i2c_get_clientdata(client);
-
- free_irq(client->irq, data);
- input_unregister_device(data->input_dev);
- kfree(data);
-
- return 0;
}
static const struct i2c_device_id max11801_ts_id[] = {
@@ -252,7 +234,6 @@ static struct i2c_driver max11801_ts_driver = {
},
.id_table = max11801_ts_id,
.probe = max11801_ts_probe,
- .remove = max11801_ts_remove,
};
module_i2c_driver(max11801_ts_driver);
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index 1740a2496371..2f03b2f289dd 100644
--- a/drivers/input/touchscreen/st1232.c
+++ b/drivers/input/touchscreen/st1232.c
@@ -24,6 +24,7 @@
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/pm_qos.h>
#include <linux/slab.h>
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
new file mode 100644
index 000000000000..f1cb05148b46
--- /dev/null
+++ b/drivers/input/touchscreen/sur40.c
@@ -0,0 +1,466 @@
+/*
+ * Surface2.0/SUR40/PixelSense input driver
+ *
+ * Copyright (c) 2013 by Florian 'floe' Echtler <floe@butterbrot.org>
+ *
+ * Derived from the USB Skeleton driver 1.1,
+ * Copyright (c) 2003 Greg Kroah-Hartman (greg@kroah.com)
+ *
+ * and from the Apple USB BCM5974 multitouch driver,
+ * Copyright (c) 2008 Henrik Rydberg (rydberg@euromail.se)
+ *
+ * and from the generic hid-multitouch driver,
+ * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/completion.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/printk.h>
+#include <linux/input-polldev.h>
+#include <linux/input/mt.h>
+#include <linux/usb/input.h>
+
+/* read 512 bytes from endpoint 0x86 -> get header + blobs */
+struct sur40_header {
+
+ __le16 type; /* always 0x0001 */
+ __le16 count; /* count of blobs (if 0: continue prev. packet) */
+
+ __le32 packet_id; /* unique ID for all packets in one frame */
+
+ __le32 timestamp; /* milliseconds (inc. by 16 or 17 each frame) */
+ __le32 unknown; /* "epoch?" always 02/03 00 00 00 */
+
+} __packed;
+
+struct sur40_blob {
+
+ __le16 blob_id;
+
+ u8 action; /* 0x02 = enter/exit, 0x03 = update (?) */
+ u8 unknown; /* always 0x01 or 0x02 (no idea what this is?) */
+
+ __le16 bb_pos_x; /* upper left corner of bounding box */
+ __le16 bb_pos_y;
+
+ __le16 bb_size_x; /* size of bounding box */
+ __le16 bb_size_y;
+
+ __le16 pos_x; /* finger tip position */
+ __le16 pos_y;
+
+ __le16 ctr_x; /* centroid position */
+ __le16 ctr_y;
+
+ __le16 axis_x; /* somehow related to major/minor axis, mostly: */
+ __le16 axis_y; /* axis_x == bb_size_y && axis_y == bb_size_x */
+
+ __le32 angle; /* orientation in radians relative to x axis -
+ actually an IEEE754 float, don't use in kernel */
+
+ __le32 area; /* size in pixels/pressure (?) */
+
+ u8 padding[32];
+
+} __packed;
+
+/* combined header/blob data */
+struct sur40_data {
+ struct sur40_header header;
+ struct sur40_blob blobs[];
+} __packed;
+
+
+/* version information */
+#define DRIVER_SHORT "sur40"
+#define DRIVER_AUTHOR "Florian 'floe' Echtler <floe@butterbrot.org>"
+#define DRIVER_DESC "Surface2.0/SUR40/PixelSense input driver"
+
+/* vendor and device IDs */
+#define ID_MICROSOFT 0x045e
+#define ID_SUR40 0x0775
+
+/* sensor resolution */
+#define SENSOR_RES_X 1920
+#define SENSOR_RES_Y 1080
+
+/* touch data endpoint */
+#define TOUCH_ENDPOINT 0x86
+
+/* polling interval (ms) */
+#define POLL_INTERVAL 10
+
+/* maximum number of contacts FIXME: this is a guess? */
+#define MAX_CONTACTS 64
+
+/* control commands */
+#define SUR40_GET_VERSION 0xb0 /* 12 bytes string */
+#define SUR40_UNKNOWN1 0xb3 /* 5 bytes */
+#define SUR40_UNKNOWN2 0xc1 /* 24 bytes */
+
+#define SUR40_GET_STATE 0xc5 /* 4 bytes state (?) */
+#define SUR40_GET_SENSORS 0xb1 /* 8 bytes sensors */
+
+/*
+ * Note: an earlier, non-public version of this driver used USB_RECIP_ENDPOINT
+ * here by mistake which is very likely to have corrupted the firmware EEPROM
+ * on two separate SUR40 devices. Thanks to Alan Stern who spotted this bug.
+ * Should you ever run into a similar problem, the background story to this
+ * incident and instructions on how to fix the corrupted EEPROM are available
+ * at https://floe.butterbrot.org/matrix/hacking/surface/brick.html
+*/
+
+struct sur40_state {
+
+ struct usb_device *usbdev;
+ struct device *dev;
+ struct input_polled_dev *input;
+
+ struct sur40_data *bulk_in_buffer;
+ size_t bulk_in_size;
+ u8 bulk_in_epaddr;
+
+ char phys[64];
+};
+
+static int sur40_command(struct sur40_state *dev,
+ u8 command, u16 index, void *buffer, u16 size)
+{
+ return usb_control_msg(dev->usbdev, usb_rcvctrlpipe(dev->usbdev, 0),
+ command,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+ 0x00, index, buffer, size, 1000);
+}
+
+/* Initialization routine, called from sur40_open */
+static int sur40_init(struct sur40_state *dev)
+{
+ int result;
+ u8 buffer[24];
+
+ /* stupidly replay the original MS driver init sequence */
+ result = sur40_command(dev, SUR40_GET_VERSION, 0x00, buffer, 12);
+ if (result < 0)
+ return result;
+
+ result = sur40_command(dev, SUR40_GET_VERSION, 0x01, buffer, 12);
+ if (result < 0)
+ return result;
+
+ result = sur40_command(dev, SUR40_GET_VERSION, 0x02, buffer, 12);
+ if (result < 0)
+ return result;
+
+ result = sur40_command(dev, SUR40_UNKNOWN2, 0x00, buffer, 24);
+ if (result < 0)
+ return result;
+
+ result = sur40_command(dev, SUR40_UNKNOWN1, 0x00, buffer, 5);
+ if (result < 0)
+ return result;
+
+ result = sur40_command(dev, SUR40_GET_VERSION, 0x03, buffer, 12);
+
+ /*
+ * Discard the result buffer - no known data inside except
+ * some version strings, maybe extract these sometime...
+ */
+
+ return result;
+}
+
+/*
+ * Callback routines from input_polled_dev
+ */
+
+/* Enable the device, polling will now start. */
+static void sur40_open(struct input_polled_dev *polldev)
+{
+ struct sur40_state *sur40 = polldev->private;
+
+ dev_dbg(sur40->dev, "open\n");
+ sur40_init(sur40);
+}
+
+/* Disable device, polling has stopped. */
+static void sur40_close(struct input_polled_dev *polldev)
+{
+ struct sur40_state *sur40 = polldev->private;
+
+ dev_dbg(sur40->dev, "close\n");
+ /*
+ * There is no known way to stop the device, so we simply
+ * stop polling.
+ */
+}
+
+/*
+ * This function is called when a whole contact has been processed,
+ * so that it can assign it to a slot and store the data there.
+ */
+static void sur40_report_blob(struct sur40_blob *blob, struct input_dev *input)
+{
+ int wide, major, minor;
+
+ int bb_size_x = le16_to_cpu(blob->bb_size_x);
+ int bb_size_y = le16_to_cpu(blob->bb_size_y);
+
+ int pos_x = le16_to_cpu(blob->pos_x);
+ int pos_y = le16_to_cpu(blob->pos_y);
+
+ int ctr_x = le16_to_cpu(blob->ctr_x);
+ int ctr_y = le16_to_cpu(blob->ctr_y);
+
+ int slotnum = input_mt_get_slot_by_key(input, blob->blob_id);
+ if (slotnum < 0 || slotnum >= MAX_CONTACTS)
+ return;
+
+ input_mt_slot(input, slotnum);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, 1);
+ wide = (bb_size_x > bb_size_y);
+ major = max(bb_size_x, bb_size_y);
+ minor = min(bb_size_x, bb_size_y);
+
+ input_report_abs(input, ABS_MT_POSITION_X, pos_x);
+ input_report_abs(input, ABS_MT_POSITION_Y, pos_y);
+ input_report_abs(input, ABS_MT_TOOL_X, ctr_x);
+ input_report_abs(input, ABS_MT_TOOL_Y, ctr_y);
+
+ /* TODO: use a better orientation measure */
+ input_report_abs(input, ABS_MT_ORIENTATION, wide);
+ input_report_abs(input, ABS_MT_TOUCH_MAJOR, major);
+ input_report_abs(input, ABS_MT_TOUCH_MINOR, minor);
+}
+
+/* core function: poll for new input data */
+static void sur40_poll(struct input_polled_dev *polldev)
+{
+
+ struct sur40_state *sur40 = polldev->private;
+ struct input_dev *input = polldev->input;
+ int result, bulk_read, need_blobs, packet_blobs, i;
+ u32 uninitialized_var(packet_id);
+
+ struct sur40_header *header = &sur40->bulk_in_buffer->header;
+ struct sur40_blob *inblob = &sur40->bulk_in_buffer->blobs[0];
+
+ dev_dbg(sur40->dev, "poll\n");
+
+ need_blobs = -1;
+
+ do {
+
+ /* perform a blocking bulk read to get data from the device */
+ result = usb_bulk_msg(sur40->usbdev,
+ usb_rcvbulkpipe(sur40->usbdev, sur40->bulk_in_epaddr),
+ sur40->bulk_in_buffer, sur40->bulk_in_size,
+ &bulk_read, 1000);
+
+ dev_dbg(sur40->dev, "received %d bytes\n", bulk_read);
+
+ if (result < 0) {
+ dev_err(sur40->dev, "error in usb_bulk_read\n");
+ return;
+ }
+
+ result = bulk_read - sizeof(struct sur40_header);
+
+ if (result % sizeof(struct sur40_blob) != 0) {
+ dev_err(sur40->dev, "transfer size mismatch\n");
+ return;
+ }
+
+ /* first packet? */
+ if (need_blobs == -1) {
+ need_blobs = le16_to_cpu(header->count);
+ dev_dbg(sur40->dev, "need %d blobs\n", need_blobs);
+ packet_id = le32_to_cpu(header->packet_id);
+ }
+
+ /*
+ * Sanity check. when video data is also being retrieved, the
+ * packet ID will usually increase in the middle of a series
+ * instead of at the end.
+ */
+ if (packet_id != header->packet_id)
+ dev_warn(sur40->dev, "packet ID mismatch\n");
+
+ packet_blobs = result / sizeof(struct sur40_blob);
+ dev_dbg(sur40->dev, "received %d blobs\n", packet_blobs);
+
+ /* packets always contain at least 4 blobs, even if empty */
+ if (packet_blobs > need_blobs)
+ packet_blobs = need_blobs;
+
+ for (i = 0; i < packet_blobs; i++) {
+ need_blobs--;
+ dev_dbg(sur40->dev, "processing blob\n");
+ sur40_report_blob(&(inblob[i]), input);
+ }
+
+ } while (need_blobs > 0);
+
+ input_mt_sync_frame(input);
+ input_sync(input);
+}
+
+/* Initialize input device parameters. */
+static void sur40_input_setup(struct input_dev *input_dev)
+{
+ __set_bit(EV_KEY, input_dev->evbit);
+ __set_bit(EV_ABS, input_dev->evbit);
+
+ input_set_abs_params(input_dev, ABS_MT_POSITION_X,
+ 0, SENSOR_RES_X, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
+ 0, SENSOR_RES_Y, 0, 0);
+
+ input_set_abs_params(input_dev, ABS_MT_TOOL_X,
+ 0, SENSOR_RES_X, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_TOOL_Y,
+ 0, SENSOR_RES_Y, 0, 0);
+
+ /* max value unknown, but major/minor axis
+ * can never be larger than screen */
+ input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
+ 0, SENSOR_RES_X, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR,
+ 0, SENSOR_RES_Y, 0, 0);
+
+ input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
+
+ input_mt_init_slots(input_dev, MAX_CONTACTS,
+ INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+}
+
+/* Check candidate USB interface. */
+static int sur40_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct usb_device *usbdev = interface_to_usbdev(interface);
+ struct sur40_state *sur40;
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ struct input_polled_dev *poll_dev;
+ int error;
+
+ /* Check if we really have the right interface. */
+ iface_desc = &interface->altsetting[0];
+ if (iface_desc->desc.bInterfaceClass != 0xFF)
+ return -ENODEV;
+
+ /* Use endpoint #4 (0x86). */
+ endpoint = &iface_desc->endpoint[4].desc;
+ if (endpoint->bEndpointAddress != TOUCH_ENDPOINT)
+ return -ENODEV;
+
+ /* Allocate memory for our device state and initialize it. */
+ sur40 = kzalloc(sizeof(struct sur40_state), GFP_KERNEL);
+ if (!sur40)
+ return -ENOMEM;
+
+ poll_dev = input_allocate_polled_device();
+ if (!poll_dev) {
+ error = -ENOMEM;
+ goto err_free_dev;
+ }
+
+ /* Set up polled input device control structure */
+ poll_dev->private = sur40;
+ poll_dev->poll_interval = POLL_INTERVAL;
+ poll_dev->open = sur40_open;
+ poll_dev->poll = sur40_poll;
+ poll_dev->close = sur40_close;
+
+ /* Set up regular input device structure */
+ sur40_input_setup(poll_dev->input);
+
+ poll_dev->input->name = "Samsung SUR40";
+ usb_to_input_id(usbdev, &poll_dev->input->id);
+ usb_make_path(usbdev, sur40->phys, sizeof(sur40->phys));
+ strlcat(sur40->phys, "/input0", sizeof(sur40->phys));
+ poll_dev->input->phys = sur40->phys;
+ poll_dev->input->dev.parent = &interface->dev;
+
+ sur40->usbdev = usbdev;
+ sur40->dev = &interface->dev;
+ sur40->input = poll_dev;
+
+ /* use the bulk-in endpoint tested above */
+ sur40->bulk_in_size = usb_endpoint_maxp(endpoint);
+ sur40->bulk_in_epaddr = endpoint->bEndpointAddress;
+ sur40->bulk_in_buffer = kmalloc(sur40->bulk_in_size, GFP_KERNEL);
+ if (!sur40->bulk_in_buffer) {
+ dev_err(&interface->dev, "Unable to allocate input buffer.");
+ error = -ENOMEM;
+ goto err_free_polldev;
+ }
+
+ error = input_register_polled_device(poll_dev);
+ if (error) {
+ dev_err(&interface->dev,
+ "Unable to register polled input device.");
+ goto err_free_buffer;
+ }
+
+ /* we can register the device now, as it is ready */
+ usb_set_intfdata(interface, sur40);
+ dev_dbg(&interface->dev, "%s is now attached\n", DRIVER_DESC);
+
+ return 0;
+
+err_free_buffer:
+ kfree(sur40->bulk_in_buffer);
+err_free_polldev:
+ input_free_polled_device(sur40->input);
+err_free_dev:
+ kfree(sur40);
+
+ return error;
+}
+
+/* Unregister device & clean up. */
+static void sur40_disconnect(struct usb_interface *interface)
+{
+ struct sur40_state *sur40 = usb_get_intfdata(interface);
+
+ input_unregister_polled_device(sur40->input);
+ input_free_polled_device(sur40->input);
+ kfree(sur40->bulk_in_buffer);
+ kfree(sur40);
+
+ usb_set_intfdata(interface, NULL);
+ dev_dbg(&interface->dev, "%s is now disconnected\n", DRIVER_DESC);
+}
+
+static const struct usb_device_id sur40_table[] = {
+ { USB_DEVICE(ID_MICROSOFT, ID_SUR40) }, /* Samsung SUR40 */
+ { } /* terminating null entry */
+};
+MODULE_DEVICE_TABLE(usb, sur40_table);
+
+/* USB-specific object needed to register this driver with the USB subsystem. */
+static struct usb_driver sur40_driver = {
+ .name = DRIVER_SHORT,
+ .probe = sur40_probe,
+ .disconnect = sur40_disconnect,
+ .id_table = sur40_table,
+};
+
+module_usb_driver(sur40_driver);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index e1c5300cacfc..68beadaabceb 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -52,6 +52,7 @@ struct titsc {
u32 config_inp[4];
u32 bit_xp, bit_xn, bit_yp, bit_yn;
u32 inp_xp, inp_xn, inp_yp, inp_yn;
+ u32 step_mask;
};
static unsigned int titsc_readl(struct titsc *ts, unsigned int reg)
@@ -196,7 +197,8 @@ static void titsc_step_config(struct titsc *ts_dev)
/* The steps1 … end and bit 0 for TS_Charge */
stepenable = (1 << (end_step + 2)) - 1;
- am335x_tsc_se_set(ts_dev->mfd_tscadc, stepenable);
+ ts_dev->step_mask = stepenable;
+ am335x_tsc_se_set(ts_dev->mfd_tscadc, ts_dev->step_mask);
}
static void titsc_read_coordinates(struct titsc *ts_dev,
@@ -260,6 +262,10 @@ static irqreturn_t titsc_irq(int irq, void *dev)
unsigned int fsm;
status = titsc_readl(ts_dev, REG_IRQSTATUS);
+ /*
+ * ADC and touchscreen share the IRQ line.
+ * FIFO1 interrupts are used by ADC. Handle FIFO0 IRQs here only
+ */
if (status & IRQENB_FIFO0THRES) {
titsc_read_coordinates(ts_dev, &x, &y, &z1, &z2);
@@ -316,7 +322,7 @@ static irqreturn_t titsc_irq(int irq, void *dev)
if (irqclr) {
titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);
- am335x_tsc_se_update(ts_dev->mfd_tscadc);
+ am335x_tsc_se_set(ts_dev->mfd_tscadc, ts_dev->step_mask);
return IRQ_HANDLED;
}
return IRQ_NONE;
@@ -348,9 +354,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
if (err < 0)
return err;
- err = of_property_read_u32(node, "ti,coordiante-readouts",
+ /*
+ * Try with the new binding first. If it fails, try again with
+ * bogus, miss-spelled version.
+ */
+ err = of_property_read_u32(node, "ti,coordinate-readouts",
&ts_dev->coordinate_readouts);
if (err < 0)
+ err = of_property_read_u32(node, "ti,coordiante-readouts",
+ &ts_dev->coordinate_readouts);
+ if (err < 0)
return err;
return of_property_read_u32_array(node, "ti,wire-config",
@@ -389,7 +402,7 @@ static int titsc_probe(struct platform_device *pdev)
}
err = request_irq(ts_dev->irq, titsc_irq,
- 0, pdev->dev.driver->name, ts_dev);
+ IRQF_SHARED, pdev->dev.driver->name, ts_dev);
if (err) {
dev_err(&pdev->dev, "failed to allocate irq.\n");
goto err_free_mem;
@@ -505,7 +518,7 @@ static struct platform_driver ti_tsc_driver = {
.name = "TI-am335x-tsc",
.owner = THIS_MODULE,
.pm = TITSC_PM_OPS,
- .of_match_table = of_match_ptr(ti_tsc_dt_ids),
+ .of_match_table = ti_tsc_dt_ids,
},
};
module_platform_driver(ti_tsc_driver);
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
index 7213e8b07e79..811353353917 100644
--- a/drivers/input/touchscreen/tsc2005.c
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -678,7 +678,6 @@ static int tsc2005_probe(struct spi_device *spi)
err_remove_sysfs:
sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);
err_clear_drvdata:
- spi_set_drvdata(spi, NULL);
free_irq(spi->irq, ts);
err_free_mem:
input_free_device(input_dev);
@@ -696,7 +695,6 @@ static int tsc2005_remove(struct spi_device *spi)
input_unregister_device(ts->idev);
kfree(ts);
- spi_set_drvdata(spi, NULL);
return 0;
}
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index 721fdb3597ca..5f87bed05467 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -106,6 +106,7 @@ struct usbtouch_device_info {
struct usbtouch_usb {
unsigned char *data;
dma_addr_t data_dma;
+ int data_size;
unsigned char *buffer;
int buf_len;
struct urb *irq;
@@ -146,12 +147,10 @@ enum {
#define USB_DEVICE_HID_CLASS(vend, prod) \
.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
- | USB_DEVICE_ID_MATCH_INT_PROTOCOL \
| USB_DEVICE_ID_MATCH_DEVICE, \
.idVendor = (vend), \
.idProduct = (prod), \
- .bInterfaceClass = USB_INTERFACE_CLASS_HID, \
- .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE
+ .bInterfaceClass = USB_INTERFACE_CLASS_HID
static const struct usb_device_id usbtouch_devices[] = {
#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
@@ -1523,7 +1522,7 @@ static int usbtouch_reset_resume(struct usb_interface *intf)
static void usbtouch_free_buffers(struct usb_device *udev,
struct usbtouch_usb *usbtouch)
{
- usb_free_coherent(udev, usbtouch->type->rept_size,
+ usb_free_coherent(udev, usbtouch->data_size,
usbtouch->data, usbtouch->data_dma);
kfree(usbtouch->buffer);
}
@@ -1568,7 +1567,20 @@ static int usbtouch_probe(struct usb_interface *intf,
if (!type->process_pkt)
type->process_pkt = usbtouch_process_pkt;
- usbtouch->data = usb_alloc_coherent(udev, type->rept_size,
+ usbtouch->data_size = type->rept_size;
+ if (type->get_pkt_len) {
+ /*
+ * When dealing with variable-length packets we should
+ * not request more than wMaxPacketSize bytes at once
+ * as we do not know if there is more data coming or
+ * we filled exactly wMaxPacketSize bytes and there is
+ * nothing else.
+ */
+ usbtouch->data_size = min(usbtouch->data_size,
+ usb_endpoint_maxp(endpoint));
+ }
+
+ usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
GFP_KERNEL, &usbtouch->data_dma);
if (!usbtouch->data)
goto out_free;
@@ -1628,12 +1640,12 @@ static int usbtouch_probe(struct usb_interface *intf,
if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
usb_fill_int_urb(usbtouch->irq, udev,
usb_rcvintpipe(udev, endpoint->bEndpointAddress),
- usbtouch->data, type->rept_size,
+ usbtouch->data, usbtouch->data_size,
usbtouch_irq, usbtouch, endpoint->bInterval);
else
usb_fill_bulk_urb(usbtouch->irq, udev,
usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
- usbtouch->data, type->rept_size,
+ usbtouch->data, usbtouch->data_size,
usbtouch_irq, usbtouch);
usbtouch->irq->dev = udev;
diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c
new file mode 100644
index 000000000000..75762d6ff3ba
--- /dev/null
+++ b/drivers/input/touchscreen/zforce_ts.c
@@ -0,0 +1,836 @@
+/*
+ * Copyright (C) 2012-2013 MundoReader S.L.
+ * Author: Heiko Stuebner <heiko@sntech.de>
+ *
+ * based in parts on Nook zforce driver
+ *
+ * Copyright (C) 2010 Barnes & Noble, Inc.
+ * Author: Pieter Truter<ptruter@intrinsyc.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/hrtimer.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/device.h>
+#include <linux/sysfs.h>
+#include <linux/input/mt.h>
+#include <linux/platform_data/zforce_ts.h>
+
+#define WAIT_TIMEOUT msecs_to_jiffies(1000)
+
+#define FRAME_START 0xee
+
+/* Offsets of the different parts of the payload the controller sends */
+#define PAYLOAD_HEADER 0
+#define PAYLOAD_LENGTH 1
+#define PAYLOAD_BODY 2
+
+/* Response offsets */
+#define RESPONSE_ID 0
+#define RESPONSE_DATA 1
+
+/* Commands */
+#define COMMAND_DEACTIVATE 0x00
+#define COMMAND_INITIALIZE 0x01
+#define COMMAND_RESOLUTION 0x02
+#define COMMAND_SETCONFIG 0x03
+#define COMMAND_DATAREQUEST 0x04
+#define COMMAND_SCANFREQ 0x08
+#define COMMAND_STATUS 0X1e
+
+/*
+ * Responses the controller sends as a result of
+ * command requests
+ */
+#define RESPONSE_DEACTIVATE 0x00
+#define RESPONSE_INITIALIZE 0x01
+#define RESPONSE_RESOLUTION 0x02
+#define RESPONSE_SETCONFIG 0x03
+#define RESPONSE_SCANFREQ 0x08
+#define RESPONSE_STATUS 0X1e
+
+/*
+ * Notifications are send by the touch controller without
+ * being requested by the driver and include for example
+ * touch indications
+ */
+#define NOTIFICATION_TOUCH 0x04
+#define NOTIFICATION_BOOTCOMPLETE 0x07
+#define NOTIFICATION_OVERRUN 0x25
+#define NOTIFICATION_PROXIMITY 0x26
+#define NOTIFICATION_INVALID_COMMAND 0xfe
+
+#define ZFORCE_REPORT_POINTS 2
+#define ZFORCE_MAX_AREA 0xff
+
+#define STATE_DOWN 0
+#define STATE_MOVE 1
+#define STATE_UP 2
+
+#define SETCONFIG_DUALTOUCH (1 << 0)
+
+struct zforce_point {
+ int coord_x;
+ int coord_y;
+ int state;
+ int id;
+ int area_major;
+ int area_minor;
+ int orientation;
+ int pressure;
+ int prblty;
+};
+
+/*
+ * @client the i2c_client
+ * @input the input device
+ * @suspending in the process of going to suspend (don't emit wakeup
+ * events for commands executed to suspend the device)
+ * @suspended device suspended
+ * @access_mutex serialize i2c-access, to keep multipart reads together
+ * @command_done completion to wait for the command result
+ * @command_mutex serialize commands send to the ic
+ * @command_waiting the id of the command that that is currently waiting
+ * for a result
+ * @command_result returned result of the command
+ */
+struct zforce_ts {
+ struct i2c_client *client;
+ struct input_dev *input;
+ const struct zforce_ts_platdata *pdata;
+ char phys[32];
+
+ bool suspending;
+ bool suspended;
+ bool boot_complete;
+
+ /* Firmware version information */
+ u16 version_major;
+ u16 version_minor;
+ u16 version_build;
+ u16 version_rev;
+
+ struct mutex access_mutex;
+
+ struct completion command_done;
+ struct mutex command_mutex;
+ int command_waiting;
+ int command_result;
+};
+
+static int zforce_command(struct zforce_ts *ts, u8 cmd)
+{
+ struct i2c_client *client = ts->client;
+ char buf[3];
+ int ret;
+
+ dev_dbg(&client->dev, "%s: 0x%x\n", __func__, cmd);
+
+ buf[0] = FRAME_START;
+ buf[1] = 1; /* data size, command only */
+ buf[2] = cmd;
+
+ mutex_lock(&ts->access_mutex);
+ ret = i2c_master_send(client, &buf[0], ARRAY_SIZE(buf));
+ mutex_unlock(&ts->access_mutex);
+ if (ret < 0) {
+ dev_err(&client->dev, "i2c send data request error: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int zforce_send_wait(struct zforce_ts *ts, const char *buf, int len)
+{
+ struct i2c_client *client = ts->client;
+ int ret;
+
+ ret = mutex_trylock(&ts->command_mutex);
+ if (!ret) {
+ dev_err(&client->dev, "already waiting for a command\n");
+ return -EBUSY;
+ }
+
+ dev_dbg(&client->dev, "sending %d bytes for command 0x%x\n",
+ buf[1], buf[2]);
+
+ ts->command_waiting = buf[2];
+
+ mutex_lock(&ts->access_mutex);
+ ret = i2c_master_send(client, buf, len);
+ mutex_unlock(&ts->access_mutex);
+ if (ret < 0) {
+ dev_err(&client->dev, "i2c send data request error: %d\n", ret);
+ goto unlock;
+ }
+
+ dev_dbg(&client->dev, "waiting for result for command 0x%x\n", buf[2]);
+
+ if (wait_for_completion_timeout(&ts->command_done, WAIT_TIMEOUT) == 0) {
+ ret = -ETIME;
+ goto unlock;
+ }
+
+ ret = ts->command_result;
+
+unlock:
+ mutex_unlock(&ts->command_mutex);
+ return ret;
+}
+
+static int zforce_command_wait(struct zforce_ts *ts, u8 cmd)
+{
+ struct i2c_client *client = ts->client;
+ char buf[3];
+ int ret;
+
+ dev_dbg(&client->dev, "%s: 0x%x\n", __func__, cmd);
+
+ buf[0] = FRAME_START;
+ buf[1] = 1; /* data size, command only */
+ buf[2] = cmd;
+
+ ret = zforce_send_wait(ts, &buf[0], ARRAY_SIZE(buf));
+ if (ret < 0) {
+ dev_err(&client->dev, "i2c send data request error: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int zforce_resolution(struct zforce_ts *ts, u16 x, u16 y)
+{
+ struct i2c_client *client = ts->client;
+ char buf[7] = { FRAME_START, 5, COMMAND_RESOLUTION,
+ (x & 0xff), ((x >> 8) & 0xff),
+ (y & 0xff), ((y >> 8) & 0xff) };
+
+ dev_dbg(&client->dev, "set resolution to (%d,%d)\n", x, y);
+
+ return zforce_send_wait(ts, &buf[0], ARRAY_SIZE(buf));
+}
+
+static int zforce_scan_frequency(struct zforce_ts *ts, u16 idle, u16 finger,
+ u16 stylus)
+{
+ struct i2c_client *client = ts->client;
+ char buf[9] = { FRAME_START, 7, COMMAND_SCANFREQ,
+ (idle & 0xff), ((idle >> 8) & 0xff),
+ (finger & 0xff), ((finger >> 8) & 0xff),
+ (stylus & 0xff), ((stylus >> 8) & 0xff) };
+
+ dev_dbg(&client->dev, "set scan frequency to (idle: %d, finger: %d, stylus: %d)\n",
+ idle, finger, stylus);
+
+ return zforce_send_wait(ts, &buf[0], ARRAY_SIZE(buf));
+}
+
+static int zforce_setconfig(struct zforce_ts *ts, char b1)
+{
+ struct i2c_client *client = ts->client;
+ char buf[7] = { FRAME_START, 5, COMMAND_SETCONFIG,
+ b1, 0, 0, 0 };
+
+ dev_dbg(&client->dev, "set config to (%d)\n", b1);
+
+ return zforce_send_wait(ts, &buf[0], ARRAY_SIZE(buf));
+}
+
+static int zforce_start(struct zforce_ts *ts)
+{
+ struct i2c_client *client = ts->client;
+ const struct zforce_ts_platdata *pdata = dev_get_platdata(&client->dev);
+ int ret;
+
+ dev_dbg(&client->dev, "starting device\n");
+
+ ret = zforce_command_wait(ts, COMMAND_INITIALIZE);
+ if (ret) {
+ dev_err(&client->dev, "Unable to initialize, %d\n", ret);
+ return ret;
+ }
+
+ ret = zforce_resolution(ts, pdata->x_max, pdata->y_max);
+ if (ret) {
+ dev_err(&client->dev, "Unable to set resolution, %d\n", ret);
+ goto error;
+ }
+
+ ret = zforce_scan_frequency(ts, 10, 50, 50);
+ if (ret) {
+ dev_err(&client->dev, "Unable to set scan frequency, %d\n",
+ ret);
+ goto error;
+ }
+
+ if (zforce_setconfig(ts, SETCONFIG_DUALTOUCH)) {
+ dev_err(&client->dev, "Unable to set config\n");
+ goto error;
+ }
+
+ /* start sending touch events */
+ ret = zforce_command(ts, COMMAND_DATAREQUEST);
+ if (ret) {
+ dev_err(&client->dev, "Unable to request data\n");
+ goto error;
+ }
+
+ /*
+ * Per NN, initial cal. take max. of 200msec.
+ * Allow time to complete this calibration
+ */
+ msleep(200);
+
+ return 0;
+
+error:
+ zforce_command_wait(ts, COMMAND_DEACTIVATE);
+ return ret;
+}
+
+static int zforce_stop(struct zforce_ts *ts)
+{
+ struct i2c_client *client = ts->client;
+ int ret;
+
+ dev_dbg(&client->dev, "stopping device\n");
+
+ /* Deactivates touch sensing and puts the device into sleep. */
+ ret = zforce_command_wait(ts, COMMAND_DEACTIVATE);
+ if (ret != 0) {
+ dev_err(&client->dev, "could not deactivate device, %d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int zforce_touch_event(struct zforce_ts *ts, u8 *payload)
+{
+ struct i2c_client *client = ts->client;
+ const struct zforce_ts_platdata *pdata = dev_get_platdata(&client->dev);
+ struct zforce_point point;
+ int count, i, num = 0;
+
+ count = payload[0];
+ if (count > ZFORCE_REPORT_POINTS) {
+ dev_warn(&client->dev, "to many coordinates %d, expected max %d\n",
+ count, ZFORCE_REPORT_POINTS);
+ count = ZFORCE_REPORT_POINTS;
+ }
+
+ for (i = 0; i < count; i++) {
+ point.coord_x =
+ payload[9 * i + 2] << 8 | payload[9 * i + 1];
+ point.coord_y =
+ payload[9 * i + 4] << 8 | payload[9 * i + 3];
+
+ if (point.coord_x > pdata->x_max ||
+ point.coord_y > pdata->y_max) {
+ dev_warn(&client->dev, "coordinates (%d,%d) invalid\n",
+ point.coord_x, point.coord_y);
+ point.coord_x = point.coord_y = 0;
+ }
+
+ point.state = payload[9 * i + 5] & 0x03;
+ point.id = (payload[9 * i + 5] & 0xfc) >> 2;
+
+ /* determine touch major, minor and orientation */
+ point.area_major = max(payload[9 * i + 6],
+ payload[9 * i + 7]);
+ point.area_minor = min(payload[9 * i + 6],
+ payload[9 * i + 7]);
+ point.orientation = payload[9 * i + 6] > payload[9 * i + 7];
+
+ point.pressure = payload[9 * i + 8];
+ point.prblty = payload[9 * i + 9];
+
+ dev_dbg(&client->dev,
+ "point %d/%d: state %d, id %d, pressure %d, prblty %d, x %d, y %d, amajor %d, aminor %d, ori %d\n",
+ i, count, point.state, point.id,
+ point.pressure, point.prblty,
+ point.coord_x, point.coord_y,
+ point.area_major, point.area_minor,
+ point.orientation);
+
+ /* the zforce id starts with "1", so needs to be decreased */
+ input_mt_slot(ts->input, point.id - 1);
+
+ input_mt_report_slot_state(ts->input, MT_TOOL_FINGER,
+ point.state != STATE_UP);
+
+ if (point.state != STATE_UP) {
+ input_report_abs(ts->input, ABS_MT_POSITION_X,
+ point.coord_x);
+ input_report_abs(ts->input, ABS_MT_POSITION_Y,
+ point.coord_y);
+ input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR,
+ point.area_major);
+ input_report_abs(ts->input, ABS_MT_TOUCH_MINOR,
+ point.area_minor);
+ input_report_abs(ts->input, ABS_MT_ORIENTATION,
+ point.orientation);
+ num++;
+ }
+ }
+
+ input_mt_sync_frame(ts->input);
+
+ input_mt_report_finger_count(ts->input, num);
+
+ input_sync(ts->input);
+
+ return 0;
+}
+
+static int zforce_read_packet(struct zforce_ts *ts, u8 *buf)
+{
+ struct i2c_client *client = ts->client;
+ int ret;
+
+ mutex_lock(&ts->access_mutex);
+
+ /* read 2 byte message header */
+ ret = i2c_master_recv(client, buf, 2);
+ if (ret < 0) {
+ dev_err(&client->dev, "error reading header: %d\n", ret);
+ goto unlock;
+ }
+
+ if (buf[PAYLOAD_HEADER] != FRAME_START) {
+ dev_err(&client->dev, "invalid frame start: %d\n", buf[0]);
+ ret = -EIO;
+ goto unlock;
+ }
+
+ if (buf[PAYLOAD_LENGTH] <= 0 || buf[PAYLOAD_LENGTH] > 255) {
+ dev_err(&client->dev, "invalid payload length: %d\n",
+ buf[PAYLOAD_LENGTH]);
+ ret = -EIO;
+ goto unlock;
+ }
+
+ /* read the message */
+ ret = i2c_master_recv(client, &buf[PAYLOAD_BODY], buf[PAYLOAD_LENGTH]);
+ if (ret < 0) {
+ dev_err(&client->dev, "error reading payload: %d\n", ret);
+ goto unlock;
+ }
+
+ dev_dbg(&client->dev, "read %d bytes for response command 0x%x\n",
+ buf[PAYLOAD_LENGTH], buf[PAYLOAD_BODY]);
+
+unlock:
+ mutex_unlock(&ts->access_mutex);
+ return ret;
+}
+
+static void zforce_complete(struct zforce_ts *ts, int cmd, int result)
+{
+ struct i2c_client *client = ts->client;
+
+ if (ts->command_waiting == cmd) {
+ dev_dbg(&client->dev, "completing command 0x%x\n", cmd);
+ ts->command_result = result;
+ complete(&ts->command_done);
+ } else {
+ dev_dbg(&client->dev, "command %d not for us\n", cmd);
+ }
+}
+
+static irqreturn_t zforce_interrupt(int irq, void *dev_id)
+{
+ struct zforce_ts *ts = dev_id;
+ struct i2c_client *client = ts->client;
+ const struct zforce_ts_platdata *pdata = dev_get_platdata(&client->dev);
+ int ret;
+ u8 payload_buffer[512];
+ u8 *payload;
+
+ /*
+ * When suspended, emit a wakeup signal if necessary and return.
+ * Due to the level-interrupt we will get re-triggered later.
+ */
+ if (ts->suspended) {
+ if (device_may_wakeup(&client->dev))
+ pm_wakeup_event(&client->dev, 500);
+ msleep(20);
+ return IRQ_HANDLED;
+ }
+
+ dev_dbg(&client->dev, "handling interrupt\n");
+
+ /* Don't emit wakeup events from commands run by zforce_suspend */
+ if (!ts->suspending && device_may_wakeup(&client->dev))
+ pm_stay_awake(&client->dev);
+
+ while (!gpio_get_value(pdata->gpio_int)) {
+ ret = zforce_read_packet(ts, payload_buffer);
+ if (ret < 0) {
+ dev_err(&client->dev, "could not read packet, ret: %d\n",
+ ret);
+ break;
+ }
+
+ payload = &payload_buffer[PAYLOAD_BODY];
+
+ switch (payload[RESPONSE_ID]) {
+ case NOTIFICATION_TOUCH:
+ /*
+ * Always report touch-events received while
+ * suspending, when being a wakeup source
+ */
+ if (ts->suspending && device_may_wakeup(&client->dev))
+ pm_wakeup_event(&client->dev, 500);
+ zforce_touch_event(ts, &payload[RESPONSE_DATA]);
+ break;
+
+ case NOTIFICATION_BOOTCOMPLETE:
+ ts->boot_complete = payload[RESPONSE_DATA];
+ zforce_complete(ts, payload[RESPONSE_ID], 0);
+ break;
+
+ case RESPONSE_INITIALIZE:
+ case RESPONSE_DEACTIVATE:
+ case RESPONSE_SETCONFIG:
+ case RESPONSE_RESOLUTION:
+ case RESPONSE_SCANFREQ:
+ zforce_complete(ts, payload[RESPONSE_ID],
+ payload[RESPONSE_DATA]);
+ break;
+
+ case RESPONSE_STATUS:
+ /*
+ * Version Payload Results
+ * [2:major] [2:minor] [2:build] [2:rev]
+ */
+ ts->version_major = (payload[RESPONSE_DATA + 1] << 8) |
+ payload[RESPONSE_DATA];
+ ts->version_minor = (payload[RESPONSE_DATA + 3] << 8) |
+ payload[RESPONSE_DATA + 2];
+ ts->version_build = (payload[RESPONSE_DATA + 5] << 8) |
+ payload[RESPONSE_DATA + 4];
+ ts->version_rev = (payload[RESPONSE_DATA + 7] << 8) |
+ payload[RESPONSE_DATA + 6];
+ dev_dbg(&ts->client->dev, "Firmware Version %04x:%04x %04x:%04x\n",
+ ts->version_major, ts->version_minor,
+ ts->version_build, ts->version_rev);
+
+ zforce_complete(ts, payload[RESPONSE_ID], 0);
+ break;
+
+ case NOTIFICATION_INVALID_COMMAND:
+ dev_err(&ts->client->dev, "invalid command: 0x%x\n",
+ payload[RESPONSE_DATA]);
+ break;
+
+ default:
+ dev_err(&ts->client->dev, "unrecognized response id: 0x%x\n",
+ payload[RESPONSE_ID]);
+ break;
+ }
+ }
+
+ if (!ts->suspending && device_may_wakeup(&client->dev))
+ pm_relax(&client->dev);
+
+ dev_dbg(&client->dev, "finished interrupt\n");
+
+ return IRQ_HANDLED;
+}
+
+static int zforce_input_open(struct input_dev *dev)
+{
+ struct zforce_ts *ts = input_get_drvdata(dev);
+ int ret;
+
+ ret = zforce_start(ts);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void zforce_input_close(struct input_dev *dev)
+{
+ struct zforce_ts *ts = input_get_drvdata(dev);
+ struct i2c_client *client = ts->client;
+ int ret;
+
+ ret = zforce_stop(ts);
+ if (ret)
+ dev_warn(&client->dev, "stopping zforce failed\n");
+
+ return;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int zforce_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct zforce_ts *ts = i2c_get_clientdata(client);
+ struct input_dev *input = ts->input;
+ int ret = 0;
+
+ mutex_lock(&input->mutex);
+ ts->suspending = true;
+
+ /*
+ * When configured as a wakeup source device should always wake
+ * the system, therefore start device if necessary.
+ */
+ if (device_may_wakeup(&client->dev)) {
+ dev_dbg(&client->dev, "suspend while being a wakeup source\n");
+
+ /* Need to start device, if not open, to be a wakeup source. */
+ if (!input->users) {
+ ret = zforce_start(ts);
+ if (ret)
+ goto unlock;
+ }
+
+ enable_irq_wake(client->irq);
+ } else if (input->users) {
+ dev_dbg(&client->dev, "suspend without being a wakeup source\n");
+
+ ret = zforce_stop(ts);
+ if (ret)
+ goto unlock;
+
+ disable_irq(client->irq);
+ }
+
+ ts->suspended = true;
+
+unlock:
+ ts->suspending = false;
+ mutex_unlock(&input->mutex);
+
+ return ret;
+}
+
+static int zforce_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct zforce_ts *ts = i2c_get_clientdata(client);
+ struct input_dev *input = ts->input;
+ int ret = 0;
+
+ mutex_lock(&input->mutex);
+
+ ts->suspended = false;
+
+ if (device_may_wakeup(&client->dev)) {
+ dev_dbg(&client->dev, "resume from being a wakeup source\n");
+
+ disable_irq_wake(client->irq);
+
+ /* need to stop device if it was not open on suspend */
+ if (!input->users) {
+ ret = zforce_stop(ts);
+ if (ret)
+ goto unlock;
+ }
+ } else if (input->users) {
+ dev_dbg(&client->dev, "resume without being a wakeup source\n");
+
+ enable_irq(client->irq);
+
+ ret = zforce_start(ts);
+ if (ret < 0)
+ goto unlock;
+ }
+
+unlock:
+ mutex_unlock(&input->mutex);
+
+ return ret;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(zforce_pm_ops, zforce_suspend, zforce_resume);
+
+static void zforce_reset(void *data)
+{
+ struct zforce_ts *ts = data;
+
+ gpio_set_value(ts->pdata->gpio_rst, 0);
+}
+
+static int zforce_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ const struct zforce_ts_platdata *pdata = dev_get_platdata(&client->dev);
+ struct zforce_ts *ts;
+ struct input_dev *input_dev;
+ int ret;
+
+ if (!pdata)
+ return -EINVAL;
+
+ ts = devm_kzalloc(&client->dev, sizeof(struct zforce_ts), GFP_KERNEL);
+ if (!ts)
+ return -ENOMEM;
+
+ ret = devm_gpio_request_one(&client->dev, pdata->gpio_int, GPIOF_IN,
+ "zforce_ts_int");
+ if (ret) {
+ dev_err(&client->dev, "request of gpio %d failed, %d\n",
+ pdata->gpio_int, ret);
+ return ret;
+ }
+
+ ret = devm_gpio_request_one(&client->dev, pdata->gpio_rst,
+ GPIOF_OUT_INIT_LOW, "zforce_ts_rst");
+ if (ret) {
+ dev_err(&client->dev, "request of gpio %d failed, %d\n",
+ pdata->gpio_rst, ret);
+ return ret;
+ }
+
+ ret = devm_add_action(&client->dev, zforce_reset, ts);
+ if (ret) {
+ dev_err(&client->dev, "failed to register reset action, %d\n",
+ ret);
+ return ret;
+ }
+
+ snprintf(ts->phys, sizeof(ts->phys),
+ "%s/input0", dev_name(&client->dev));
+
+ input_dev = devm_input_allocate_device(&client->dev);
+ if (!input_dev) {
+ dev_err(&client->dev, "could not allocate input device\n");
+ return -ENOMEM;
+ }
+
+ mutex_init(&ts->access_mutex);
+ mutex_init(&ts->command_mutex);
+
+ ts->pdata = pdata;
+ ts->client = client;
+ ts->input = input_dev;
+
+ input_dev->name = "Neonode zForce touchscreen";
+ input_dev->phys = ts->phys;
+ input_dev->id.bustype = BUS_I2C;
+
+ input_dev->open = zforce_input_open;
+ input_dev->close = zforce_input_close;
+
+ __set_bit(EV_KEY, input_dev->evbit);
+ __set_bit(EV_SYN, input_dev->evbit);
+ __set_bit(EV_ABS, input_dev->evbit);
+
+ /* For multi touch */
+ input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0,
+ pdata->x_max, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0,
+ pdata->y_max, 0, 0);
+
+ input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0,
+ ZFORCE_MAX_AREA, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, 0,
+ ZFORCE_MAX_AREA, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
+ input_mt_init_slots(input_dev, ZFORCE_REPORT_POINTS, INPUT_MT_DIRECT);
+
+ input_set_drvdata(ts->input, ts);
+
+ init_completion(&ts->command_done);
+
+ /*
+ * The zforce pulls the interrupt low when it has data ready.
+ * After it is triggered the isr thread runs until all the available
+ * packets have been read and the interrupt is high again.
+ * Therefore we can trigger the interrupt anytime it is low and do
+ * not need to limit it to the interrupt edge.
+ */
+ ret = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+ zforce_interrupt,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ input_dev->name, ts);
+ if (ret) {
+ dev_err(&client->dev, "irq %d request failed\n", client->irq);
+ return ret;
+ }
+
+ i2c_set_clientdata(client, ts);
+
+ /* let the controller boot */
+ gpio_set_value(pdata->gpio_rst, 1);
+
+ ts->command_waiting = NOTIFICATION_BOOTCOMPLETE;
+ if (wait_for_completion_timeout(&ts->command_done, WAIT_TIMEOUT) == 0)
+ dev_warn(&client->dev, "bootcomplete timed out\n");
+
+ /* need to start device to get version information */
+ ret = zforce_command_wait(ts, COMMAND_INITIALIZE);
+ if (ret) {
+ dev_err(&client->dev, "unable to initialize, %d\n", ret);
+ return ret;
+ }
+
+ /* this gets the firmware version among other informations */
+ ret = zforce_command_wait(ts, COMMAND_STATUS);
+ if (ret < 0) {
+ dev_err(&client->dev, "couldn't get status, %d\n", ret);
+ zforce_stop(ts);
+ return ret;
+ }
+
+ /* stop device and put it into sleep until it is opened */
+ ret = zforce_stop(ts);
+ if (ret < 0)
+ return ret;
+
+ device_set_wakeup_capable(&client->dev, true);
+
+ ret = input_register_device(input_dev);
+ if (ret) {
+ dev_err(&client->dev, "could not register input device, %d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct i2c_device_id zforce_idtable[] = {
+ { "zforce-ts", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, zforce_idtable);
+
+static struct i2c_driver zforce_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "zforce-ts",
+ .pm = &zforce_pm_ops,
+ },
+ .probe = zforce_probe,
+ .id_table = zforce_idtable,
+};
+
+module_i2c_driver(zforce_driver);
+
+MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
+MODULE_DESCRIPTION("zForce TouchScreen Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-05 22:30:33 +0100