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-rw-r--r--drivers/input/touchscreen/Kconfig6
-rw-r--r--drivers/input/touchscreen/Makefile2
-rw-r--r--drivers/input/touchscreen/ad7877.c10
-rw-r--r--drivers/input/touchscreen/ads7846.c4
-rw-r--r--drivers/input/touchscreen/atmel-wm97xx.c12
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c68
-rw-r--r--drivers/input/touchscreen/atmel_tsadcc.c2
-rw-r--r--drivers/input/touchscreen/auo-pixcir-ts.c226
-rw-r--r--drivers/input/touchscreen/da9052_tsi.c59
-rw-r--r--drivers/input/touchscreen/edt-ft5x06.c3
-rw-r--r--drivers/input/touchscreen/eeti_ts.c3
-rw-r--r--drivers/input/touchscreen/mc13783_ts.c12
-rw-r--r--drivers/input/touchscreen/st1232.c77
-rw-r--r--drivers/input/touchscreen/ti_am335x_tsc.c398
-rw-r--r--drivers/input/touchscreen/ti_tscadc.c486
-rw-r--r--drivers/input/touchscreen/wm9712.c28
-rw-r--r--drivers/input/touchscreen/wm97xx-core.c11
17 files changed, 722 insertions, 685 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 9a647ee1136a..f9a5fd89bc02 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -517,9 +517,9 @@ config TOUCHSCREEN_TOUCHWIN
To compile this driver as a module, choose M here: the
module will be called touchwin.
-config TOUCHSCREEN_TI_TSCADC
+config TOUCHSCREEN_TI_AM335X_TSC
tristate "TI Touchscreen Interface"
- depends on ARCH_OMAP2PLUS
+ depends on MFD_TI_AM335X_TSCADC
help
Say Y here if you have 4/5/8 wire touchscreen controller
to be connected to the ADC controller on your TI AM335x SoC.
@@ -527,7 +527,7 @@ config TOUCHSCREEN_TI_TSCADC
If unsure, say N.
To compile this driver as a module, choose M here: the
- module will be called ti_tscadc.
+ module will be called ti_am335x_tsc.
config TOUCHSCREEN_ATMEL_TSADCC
tristate "Atmel Touchscreen Interface"
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 5f949c0bf82f..6bfbeab67c9f 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -51,7 +51,7 @@ 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-$(CONFIG_TOUCHSCREEN_TI_TSCADC) += ti_tscadc.o
+obj-$(CONFIG_TOUCHSCREEN_TI_AM335X_TSC) += ti_am335x_tsc.o
obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index 23fa829b869d..f3a174a83c82 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -273,7 +273,7 @@ static int ad7877_write(struct spi_device *spi, u16 reg, u16 val)
static int ad7877_read_adc(struct spi_device *spi, unsigned command)
{
- struct ad7877 *ts = dev_get_drvdata(&spi->dev);
+ struct ad7877 *ts = spi_get_drvdata(spi);
struct ser_req *req;
int status;
int sample;
@@ -720,7 +720,7 @@ static int ad7877_probe(struct spi_device *spi)
goto err_free_mem;
}
- dev_set_drvdata(&spi->dev, ts);
+ spi_set_drvdata(spi, ts);
ts->spi = spi;
ts->input = input_dev;
@@ -806,13 +806,13 @@ err_free_irq:
err_free_mem:
input_free_device(input_dev);
kfree(ts);
- dev_set_drvdata(&spi->dev, NULL);
+ spi_set_drvdata(spi, NULL);
return err;
}
static int ad7877_remove(struct spi_device *spi)
{
- struct ad7877 *ts = dev_get_drvdata(&spi->dev);
+ struct ad7877 *ts = spi_get_drvdata(spi);
sysfs_remove_group(&spi->dev.kobj, &ad7877_attr_group);
@@ -823,7 +823,7 @@ static int ad7877_remove(struct spi_device *spi)
kfree(ts);
dev_dbg(&spi->dev, "unregistered touchscreen\n");
- dev_set_drvdata(&spi->dev, NULL);
+ spi_set_drvdata(spi, NULL);
return 0;
}
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 434c3df250ca..84ccf140c1bb 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -1245,7 +1245,7 @@ static int ads7846_probe(struct spi_device *spi)
goto err_free_mem;
}
- dev_set_drvdata(&spi->dev, ts);
+ spi_set_drvdata(spi, ts);
ts->packet = packet;
ts->spi = spi;
@@ -1397,7 +1397,7 @@ static int ads7846_probe(struct spi_device *spi)
static int ads7846_remove(struct spi_device *spi)
{
- struct ads7846 *ts = dev_get_drvdata(&spi->dev);
+ struct ads7846 *ts = spi_get_drvdata(spi);
device_init_wakeup(&spi->dev, false);
diff --git a/drivers/input/touchscreen/atmel-wm97xx.c b/drivers/input/touchscreen/atmel-wm97xx.c
index c5c2dbb93869..2c1e46b7e45b 100644
--- a/drivers/input/touchscreen/atmel-wm97xx.c
+++ b/drivers/input/touchscreen/atmel-wm97xx.c
@@ -432,17 +432,7 @@ static struct platform_driver atmel_wm97xx_driver = {
},
};
-static int __init atmel_wm97xx_init(void)
-{
- return platform_driver_probe(&atmel_wm97xx_driver, atmel_wm97xx_probe);
-}
-module_init(atmel_wm97xx_init);
-
-static void __exit atmel_wm97xx_exit(void)
-{
- platform_driver_unregister(&atmel_wm97xx_driver);
-}
-module_exit(atmel_wm97xx_exit);
+module_platform_driver_probe(atmel_wm97xx_driver, atmel_wm97xx_probe);
MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
MODULE_DESCRIPTION("wm97xx continuous touch driver for Atmel AT91 and AVR32");
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index d04f810cb1dd..59aa24002c7b 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -176,11 +176,17 @@
/* Define for MXT_GEN_COMMAND_T6 */
#define MXT_BOOT_VALUE 0xa5
#define MXT_BACKUP_VALUE 0x55
-#define MXT_BACKUP_TIME 25 /* msec */
-#define MXT_RESET_TIME 65 /* msec */
+#define MXT_BACKUP_TIME 50 /* msec */
+#define MXT_RESET_TIME 200 /* msec */
#define MXT_FWRESET_TIME 175 /* msec */
+/* MXT_SPT_GPIOPWM_T19 field */
+#define MXT_GPIO0_MASK 0x04
+#define MXT_GPIO1_MASK 0x08
+#define MXT_GPIO2_MASK 0x10
+#define MXT_GPIO3_MASK 0x20
+
/* Command to unlock bootloader */
#define MXT_UNLOCK_CMD_MSB 0xaa
#define MXT_UNLOCK_CMD_LSB 0xdc
@@ -212,6 +218,8 @@
/* Touchscreen absolute values */
#define MXT_MAX_AREA 0xff
+#define MXT_PIXELS_PER_MM 20
+
struct mxt_info {
u8 family_id;
u8 variant_id;
@@ -243,6 +251,8 @@ struct mxt_data {
const struct mxt_platform_data *pdata;
struct mxt_object *object_table;
struct mxt_info info;
+ bool is_tp;
+
unsigned int irq;
unsigned int max_x;
unsigned int max_y;
@@ -251,6 +261,7 @@ struct mxt_data {
u8 T6_reportid;
u8 T9_reportid_min;
u8 T9_reportid_max;
+ u8 T19_reportid;
};
static bool mxt_object_readable(unsigned int type)
@@ -502,6 +513,21 @@ static int mxt_write_object(struct mxt_data *data,
return mxt_write_reg(data->client, reg + offset, val);
}
+static void mxt_input_button(struct mxt_data *data, struct mxt_message *message)
+{
+ struct input_dev *input = data->input_dev;
+ bool button;
+ int i;
+
+ /* Active-low switch */
+ for (i = 0; i < MXT_NUM_GPIO; i++) {
+ if (data->pdata->key_map[i] == KEY_RESERVED)
+ continue;
+ button = !(message->message[0] & MXT_GPIO0_MASK << i);
+ input_report_key(input, data->pdata->key_map[i], button);
+ }
+}
+
static void mxt_input_touchevent(struct mxt_data *data,
struct mxt_message *message, int id)
{
@@ -585,6 +611,9 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
int id = reportid - data->T9_reportid_min;
mxt_input_touchevent(data, &message, id);
update_input = true;
+ } else if (message.reportid == data->T19_reportid) {
+ mxt_input_button(data, &message);
+ update_input = true;
} else {
mxt_dump_message(dev, &message);
}
@@ -764,6 +793,9 @@ static int mxt_get_object_table(struct mxt_data *data)
data->T9_reportid_min = min_id;
data->T9_reportid_max = max_id;
break;
+ case MXT_SPT_GPIOPWM_T19:
+ data->T19_reportid = min_id;
+ break;
}
}
@@ -777,7 +809,7 @@ static void mxt_free_object_table(struct mxt_data *data)
data->T6_reportid = 0;
data->T9_reportid_min = 0;
data->T9_reportid_max = 0;
-
+ data->T19_reportid = 0;
}
static int mxt_initialize(struct mxt_data *data)
@@ -1115,9 +1147,13 @@ static int mxt_probe(struct i2c_client *client,
goto err_free_mem;
}
- input_dev->name = "Atmel maXTouch Touchscreen";
+ data->is_tp = pdata && pdata->is_tp;
+
+ input_dev->name = (data->is_tp) ? "Atmel maXTouch Touchpad" :
+ "Atmel maXTouch Touchscreen";
snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0",
client->adapter->nr, client->addr);
+
input_dev->phys = data->phys;
input_dev->id.bustype = BUS_I2C;
@@ -1140,6 +1176,29 @@ static int mxt_probe(struct i2c_client *client,
__set_bit(EV_KEY, input_dev->evbit);
__set_bit(BTN_TOUCH, input_dev->keybit);
+ if (data->is_tp) {
+ int i;
+ __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
+ __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
+
+ for (i = 0; i < MXT_NUM_GPIO; i++)
+ if (pdata->key_map[i] != KEY_RESERVED)
+ __set_bit(pdata->key_map[i], input_dev->keybit);
+
+ __set_bit(BTN_TOOL_FINGER, input_dev->keybit);
+ __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
+ __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
+ __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit);
+ __set_bit(BTN_TOOL_QUINTTAP, input_dev->keybit);
+
+ input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM);
+ input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM);
+ input_abs_set_res(input_dev, ABS_MT_POSITION_X,
+ MXT_PIXELS_PER_MM);
+ input_abs_set_res(input_dev, ABS_MT_POSITION_Y,
+ MXT_PIXELS_PER_MM);
+ }
+
/* For single touch */
input_set_abs_params(input_dev, ABS_X,
0, data->max_x, 0, 0);
@@ -1258,6 +1317,7 @@ static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume);
static const struct i2c_device_id mxt_id[] = {
{ "qt602240_ts", 0 },
{ "atmel_mxt_ts", 0 },
+ { "atmel_mxt_tp", 0 },
{ "mXT224", 0 },
{ }
};
diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c
index 55092d1c5cb9..95f6785a94b0 100644
--- a/drivers/input/touchscreen/atmel_tsadcc.c
+++ b/drivers/input/touchscreen/atmel_tsadcc.c
@@ -22,7 +22,7 @@
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/io.h>
-#include <mach/board.h>
+#include <linux/platform_data/atmel.h>
#include <mach/cpu.h>
/* Register definitions based on AT91SAM9RL64 preliminary draft datasheet */
diff --git a/drivers/input/touchscreen/auo-pixcir-ts.c b/drivers/input/touchscreen/auo-pixcir-ts.c
index c6e19a96348e..d3f9f6b0f9b7 100644
--- a/drivers/input/touchscreen/auo-pixcir-ts.c
+++ b/drivers/input/touchscreen/auo-pixcir-ts.c
@@ -31,6 +31,8 @@
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/input/auo-pixcir-ts.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
/*
* Coordinate calculation:
@@ -111,6 +113,7 @@
struct auo_pixcir_ts {
struct i2c_client *client;
struct input_dev *input;
+ const struct auo_pixcir_ts_platdata *pdata;
char phys[32];
/* special handling for touch_indicate interupt mode */
@@ -132,7 +135,7 @@ static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
struct auo_point_t *point)
{
struct i2c_client *client = ts->client;
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
uint8_t raw_coord[8];
uint8_t raw_area[4];
int i, ret;
@@ -178,8 +181,7 @@ static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id)
{
struct auo_pixcir_ts *ts = dev_id;
- struct i2c_client *client = ts->client;
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
struct auo_point_t point[AUO_PIXCIR_REPORT_POINTS];
int i;
int ret;
@@ -290,7 +292,7 @@ static int auo_pixcir_int_config(struct auo_pixcir_ts *ts,
int int_setting)
{
struct i2c_client *client = ts->client;
- struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
int ret;
ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
@@ -479,53 +481,105 @@ unlock:
}
#endif
-static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops, auo_pixcir_suspend,
- auo_pixcir_resume);
+static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops,
+ auo_pixcir_suspend, auo_pixcir_resume);
+
+#ifdef CONFIG_OF
+static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
+{
+ struct auo_pixcir_ts_platdata *pdata;
+ struct device_node *np = dev->of_node;
+
+ if (!np)
+ return ERR_PTR(-ENOENT);
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(dev, "failed to allocate platform data\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ pdata->gpio_int = of_get_gpio(np, 0);
+ if (!gpio_is_valid(pdata->gpio_int)) {
+ dev_err(dev, "failed to get interrupt gpio\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ pdata->gpio_rst = of_get_gpio(np, 1);
+ if (!gpio_is_valid(pdata->gpio_rst)) {
+ dev_err(dev, "failed to get reset gpio\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(np, "x-size", &pdata->x_max)) {
+ dev_err(dev, "failed to get x-size property\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(np, "y-size", &pdata->y_max)) {
+ dev_err(dev, "failed to get y-size property\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ /* default to asserting the interrupt when the screen is touched */
+ pdata->int_setting = AUO_PIXCIR_INT_TOUCH_IND;
+
+ return pdata;
+}
+#else
+static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
+
+static void auo_pixcir_reset(void *data)
+{
+ struct auo_pixcir_ts *ts = data;
+
+ gpio_set_value(ts->pdata->gpio_rst, 0);
+}
static int auo_pixcir_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+ const struct i2c_device_id *id)
{
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ const struct auo_pixcir_ts_platdata *pdata;
struct auo_pixcir_ts *ts;
struct input_dev *input_dev;
- int ret;
-
- if (!pdata)
- return -EINVAL;
+ int version;
+ int error;
+
+ pdata = dev_get_platdata(&client->dev);
+ if (!pdata) {
+ pdata = auo_pixcir_parse_dt(&client->dev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+ }
- ts = kzalloc(sizeof(struct auo_pixcir_ts), GFP_KERNEL);
+ ts = devm_kzalloc(&client->dev,
+ sizeof(struct auo_pixcir_ts), GFP_KERNEL);
if (!ts)
return -ENOMEM;
- ret = gpio_request(pdata->gpio_int, "auo_pixcir_ts_int");
- if (ret) {
- dev_err(&client->dev, "request of gpio %d failed, %d\n",
- pdata->gpio_int, ret);
- goto err_gpio_int;
+ input_dev = devm_input_allocate_device(&client->dev);
+ if (!input_dev) {
+ dev_err(&client->dev, "could not allocate input device\n");
+ return -ENOMEM;
}
- if (pdata->init_hw)
- pdata->init_hw(client);
-
+ ts->pdata = pdata;
ts->client = client;
+ ts->input = input_dev;
ts->touch_ind_mode = 0;
+ ts->stopped = true;
init_waitqueue_head(&ts->wait);
snprintf(ts->phys, sizeof(ts->phys),
"%s/input0", dev_name(&client->dev));
- input_dev = input_allocate_device();
- if (!input_dev) {
- dev_err(&client->dev, "could not allocate input device\n");
- goto err_input_alloc;
- }
-
- ts->input = input_dev;
-
input_dev->name = "AUO-Pixcir touchscreen";
input_dev->phys = ts->phys;
input_dev->id.bustype = BUS_I2C;
- input_dev->dev.parent = &client->dev;
input_dev->open = auo_pixcir_input_open;
input_dev->close = auo_pixcir_input_close;
@@ -550,70 +604,70 @@ static int auo_pixcir_probe(struct i2c_client *client,
AUO_PIXCIR_MAX_AREA, 0, 0);
input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
- ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
- if (ret < 0)
- goto err_fw_vers;
- dev_info(&client->dev, "firmware version 0x%X\n", ret);
-
- ret = auo_pixcir_int_config(ts, pdata->int_setting);
- if (ret)
- goto err_fw_vers;
-
input_set_drvdata(ts->input, ts);
- ts->stopped = true;
- ret = request_threaded_irq(client->irq, NULL, auo_pixcir_interrupt,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
- input_dev->name, ts);
- if (ret) {
- dev_err(&client->dev, "irq %d requested failed\n", client->irq);
- goto err_fw_vers;
+ error = devm_gpio_request_one(&client->dev, pdata->gpio_int,
+ GPIOF_DIR_IN, "auo_pixcir_ts_int");
+ if (error) {
+ dev_err(&client->dev, "request of gpio %d failed, %d\n",
+ pdata->gpio_int, error);
+ return error;
}
- /* stop device and put it into deep sleep until it is opened */
- ret = auo_pixcir_stop(ts);
- if (ret < 0)
- goto err_input_register;
-
- ret = input_register_device(input_dev);
- if (ret) {
- dev_err(&client->dev, "could not register input device\n");
- goto err_input_register;
+ error = devm_gpio_request_one(&client->dev, pdata->gpio_rst,
+ GPIOF_DIR_OUT | GPIOF_INIT_HIGH,
+ "auo_pixcir_ts_rst");
+ if (error) {
+ dev_err(&client->dev, "request of gpio %d failed, %d\n",
+ pdata->gpio_rst, error);
+ return error;
}
- i2c_set_clientdata(client, ts);
-
- return 0;
+ error = devm_add_action(&client->dev, auo_pixcir_reset, ts);
+ if (error) {
+ auo_pixcir_reset(ts);
+ dev_err(&client->dev, "failed to register reset action, %d\n",
+ error);
+ return error;
+ }
-err_input_register:
- free_irq(client->irq, ts);
-err_fw_vers:
- input_free_device(input_dev);
-err_input_alloc:
- if (pdata->exit_hw)
- pdata->exit_hw(client);
- gpio_free(pdata->gpio_int);
-err_gpio_int:
- kfree(ts);
+ msleep(200);
- return ret;
-}
-
-static int auo_pixcir_remove(struct i2c_client *client)
-{
- struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
- const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+ version = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
+ if (version < 0) {
+ error = version;
+ return error;
+ }
- free_irq(client->irq, ts);
+ dev_info(&client->dev, "firmware version 0x%X\n", version);
- input_unregister_device(ts->input);
+ error = auo_pixcir_int_config(ts, pdata->int_setting);
+ if (error)
+ return error;
- if (pdata->exit_hw)
- pdata->exit_hw(client);
+ error = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, auo_pixcir_interrupt,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ input_dev->name, ts);
+ if (error) {
+ dev_err(&client->dev, "irq %d requested failed, %d\n",
+ client->irq, error);
+ return error;
+ }
- gpio_free(pdata->gpio_int);
+ /* stop device and put it into deep sleep until it is opened */
+ error = auo_pixcir_stop(ts);
+ if (error)
+ return error;
+
+ error = input_register_device(input_dev);
+ if (error) {
+ dev_err(&client->dev, "could not register input device, %d\n",
+ error);
+ return error;
+ }
- kfree(ts);
+ i2c_set_clientdata(client, ts);
return 0;
}
@@ -624,14 +678,22 @@ static const struct i2c_device_id auo_pixcir_idtable[] = {
};
MODULE_DEVICE_TABLE(i2c, auo_pixcir_idtable);
+#ifdef CONFIG_OF
+static struct of_device_id auo_pixcir_ts_dt_idtable[] = {
+ { .compatible = "auo,auo_pixcir_ts" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, auo_pixcir_ts_dt_idtable);
+#endif
+
static struct i2c_driver auo_pixcir_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "auo_pixcir_ts",
.pm = &auo_pixcir_pm_ops,
+ .of_match_table = of_match_ptr(auo_pixcir_ts_dt_idtable),
},
.probe = auo_pixcir_probe,
- .remove = auo_pixcir_remove,
.id_table = auo_pixcir_idtable,
};
diff --git a/drivers/input/touchscreen/da9052_tsi.c b/drivers/input/touchscreen/da9052_tsi.c
index 303966ffe1e8..8f561e22bdd4 100644
--- a/drivers/input/touchscreen/da9052_tsi.c
+++ b/drivers/input/touchscreen/da9052_tsi.c
@@ -27,8 +27,6 @@ struct da9052_tsi {
struct input_dev *dev;
struct delayed_work ts_pen_work;
struct mutex mutex;
- unsigned int irq_pendwn;
- unsigned int irq_datardy;
bool stopped;
bool adc_on;
};
@@ -45,8 +43,8 @@ static irqreturn_t da9052_ts_pendwn_irq(int irq, void *data)
if (!tsi->stopped) {
/* Mask PEN_DOWN event and unmask TSI_READY event */
- disable_irq_nosync(tsi->irq_pendwn);
- enable_irq(tsi->irq_datardy);
+ da9052_disable_irq_nosync(tsi->da9052, DA9052_IRQ_PENDOWN);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
da9052_ts_adc_toggle(tsi, true);
@@ -137,8 +135,8 @@ static void da9052_ts_pen_work(struct work_struct *work)
return;
/* Mask TSI_READY event and unmask PEN_DOWN event */
- disable_irq(tsi->irq_datardy);
- enable_irq(tsi->irq_pendwn);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
}
}
}
@@ -197,7 +195,7 @@ static int da9052_ts_input_open(struct input_dev *input_dev)
mb();
/* Unmask PEN_DOWN event */
- enable_irq(tsi->irq_pendwn);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
/* Enable Pen Detect Circuit */
return da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG,
@@ -210,11 +208,11 @@ static void da9052_ts_input_close(struct input_dev *input_dev)
tsi->stopped = true;
mb();
- disable_irq(tsi->irq_pendwn);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
cancel_delayed_work_sync(&tsi->ts_pen_work);
if (tsi->adc_on) {
- disable_irq(tsi->irq_datardy);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
da9052_ts_adc_toggle(tsi, false);
/*
@@ -222,7 +220,7 @@ static void da9052_ts_input_close(struct input_dev *input_dev)
* twice and we need to enable it to keep enable/disable
* counter balanced. IRQ is still off though.
*/
- enable_irq(tsi->irq_pendwn);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
}
/* Disable Pen Detect Circuit */
@@ -234,21 +232,12 @@ static int da9052_ts_probe(struct platform_device *pdev)
struct da9052 *da9052;
struct da9052_tsi *tsi;
struct input_dev *input_dev;
- int irq_pendwn;
- int irq_datardy;
int error;
da9052 = dev_get_drvdata(pdev->dev.parent);
if (!da9052)
return -EINVAL;
- irq_pendwn = platform_get_irq_byname(pdev, "PENDWN");
- irq_datardy = platform_get_irq_byname(pdev, "TSIRDY");
- if (irq_pendwn < 0 || irq_datardy < 0) {
- dev_err(da9052->dev, "Unable to determine device interrupts\n");
- return -ENXIO;
- }
-
tsi = kzalloc(sizeof(struct da9052_tsi), GFP_KERNEL);
input_dev = input_allocate_device();
if (!tsi || !input_dev) {
@@ -258,8 +247,6 @@ static int da9052_ts_probe(struct platform_device *pdev)
tsi->da9052 = da9052;
tsi->dev = input_dev;
- tsi->irq_pendwn = da9052->irq_base + irq_pendwn;
- tsi->irq_datardy = da9052->irq_base + irq_datardy;
tsi->stopped = true;
INIT_DELAYED_WORK(&tsi->ts_pen_work, da9052_ts_pen_work);
@@ -287,31 +274,25 @@ static int da9052_ts_probe(struct platform_device *pdev)
/* Disable ADC */
da9052_ts_adc_toggle(tsi, false);
- error = request_threaded_irq(tsi->irq_pendwn,
- NULL, da9052_ts_pendwn_irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- "PENDWN", tsi);
+ error = da9052_request_irq(tsi->da9052, DA9052_IRQ_PENDOWN,
+ "pendown-irq", da9052_ts_pendwn_irq, tsi);
if (error) {
dev_err(tsi->da9052->dev,
- "Failed to register PENDWN IRQ %d, error = %d\n",
- tsi->irq_pendwn, error);
+ "Failed to register PENDWN IRQ: %d\n", error);
goto err_free_mem;
}
- error = request_threaded_irq(tsi->irq_datardy,
- NULL, da9052_ts_datardy_irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- "TSIRDY", tsi);
+ error = da9052_request_irq(tsi->da9052, DA9052_IRQ_TSIREADY,
+ "tsiready-irq", da9052_ts_datardy_irq, tsi);
if (error) {
dev_err(tsi->da9052->dev,
- "Failed to register TSIRDY IRQ %d, error = %d\n",
- tsi->irq_datardy, error);
+ "Failed to register TSIRDY IRQ :%d\n", error);
goto err_free_pendwn_irq;
}
/* Mask PEN_DOWN and TSI_READY events */
- disable_irq(tsi->irq_pendwn);
- disable_irq(tsi->irq_datardy);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
error = da9052_configure_tsi(tsi);
if (error)
@@ -326,9 +307,9 @@ static int da9052_ts_probe(struct platform_device *pdev)
return 0;
err_free_datardy_irq:
- free_irq(tsi->irq_datardy, tsi);
+ da9052_free_irq(tsi->da9052, DA9052_IRQ_TSIREADY, tsi);
err_free_pendwn_irq:
- free_irq(tsi->irq_pendwn, tsi);
+ da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi);
err_free_mem:
kfree(tsi);
input_free_device(input_dev);
@@ -342,8 +323,8 @@ static int da9052_ts_remove(struct platform_device *pdev)
da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x19);
- free_irq(tsi->irq_pendwn, tsi);
- free_irq(tsi->irq_datardy, tsi);
+ da9052_free_irq(tsi->da9052, DA9052_IRQ_TSIREADY, tsi);
+ da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi);
input_unregister_device(tsi->dev);
kfree(tsi);
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index a9170157b442..83fa1b15a97f 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -440,8 +440,7 @@ static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
return -EIO;
}
- if (tsdata->raw_buffer)
- kfree(tsdata->raw_buffer);
+ kfree(tsdata->raw_buffer);
tsdata->raw_buffer = NULL;
/* restore parameters */
diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c
index 55255a940072..8fe5086c8d2e 100644
--- a/drivers/input/touchscreen/eeti_ts.c
+++ b/drivers/input/touchscreen/eeti_ts.c
@@ -206,8 +206,7 @@ static int eeti_ts_probe(struct i2c_client *client,
if (err < 0)
goto err1;
- if (pdata)
- priv->irq_active_high = pdata->irq_active_high;
+ priv->irq_active_high = pdata->irq_active_high;
irq_flags = priv->irq_active_high ?
IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING;
diff --git a/drivers/input/touchscreen/mc13783_ts.c b/drivers/input/touchscreen/mc13783_ts.c
index 02103b6abb39..89308fe38752 100644
--- a/drivers/input/touchscreen/mc13783_ts.c
+++ b/drivers/input/touchscreen/mc13783_ts.c
@@ -250,17 +250,7 @@ static struct platform_driver mc13783_ts_driver = {
},
};
-static int __init mc13783_ts_init(void)
-{
- return platform_driver_probe(&mc13783_ts_driver, &mc13783_ts_probe);
-}
-module_init(mc13783_ts_init);
-
-static void __exit mc13783_ts_exit(void)
-{
- platform_driver_unregister(&mc13783_ts_driver);
-}
-module_exit(mc13783_ts_exit);
+module_platform_driver_probe(mc13783_ts_driver, mc13783_ts_probe);
MODULE_DESCRIPTION("MC13783 input touchscreen driver");
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index d9d05e222428..1740a2496371 100644
--- a/drivers/input/touchscreen/st1232.c
+++ b/drivers/input/touchscreen/st1232.c
@@ -19,13 +19,16 @@
*/
#include <linux/delay.h>
+#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/of_gpio.h>
#include <linux/pm_qos.h>
#include <linux/slab.h>
#include <linux/types.h>
+#include <linux/platform_data/st1232_pdata.h>
#define ST1232_TS_NAME "st1232-ts"
@@ -48,6 +51,7 @@ struct st1232_ts_data {
struct input_dev *input_dev;
struct st1232_ts_finger finger[MAX_FINGERS];
struct dev_pm_qos_request low_latency_req;
+ int reset_gpio;
};
static int st1232_ts_read_data(struct st1232_ts_data *ts)
@@ -139,10 +143,17 @@ end:
return IRQ_HANDLED;
}
+static void st1232_ts_power(struct st1232_ts_data *ts, bool poweron)
+{
+ if (gpio_is_valid(ts->reset_gpio))
+ gpio_direction_output(ts->reset_gpio, poweron);
+}
+
static int st1232_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct st1232_ts_data *ts;
+ struct st1232_pdata *pdata = client->dev.platform_data;
struct input_dev *input_dev;
int error;
@@ -156,17 +167,36 @@ static int st1232_ts_probe(struct i2c_client *client,
return -EINVAL;
}
+ ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
+ if (!ts)
+ return -ENOMEM;
- ts = kzalloc(sizeof(struct st1232_ts_data), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!ts || !input_dev) {
- error = -ENOMEM;
- goto err_free_mem;
- }
+ input_dev = devm_input_allocate_device(&client->dev);
+ if (!input_dev)
+ return -ENOMEM;
ts->client = client;
ts->input_dev = input_dev;
+ if (pdata)
+ ts->reset_gpio = pdata->reset_gpio;
+ else if (client->dev.of_node)
+ ts->reset_gpio = of_get_gpio(client->dev.of_node, 0);
+ else
+ ts->reset_gpio = -ENODEV;
+
+ if (gpio_is_valid(ts->reset_gpio)) {
+ error = devm_gpio_request(&client->dev, ts->reset_gpio, NULL);
+ if (error) {
+ dev_err(&client->dev,
+ "Unable to request GPIO pin %d.\n",
+ ts->reset_gpio);
+ return error;
+ }
+ }
+
+ st1232_ts_power(ts, true);
+
input_dev->name = "st1232-touchscreen";
input_dev->id.bustype = BUS_I2C;
input_dev->dev.parent = &client->dev;
@@ -179,31 +209,26 @@ static int st1232_ts_probe(struct i2c_client *client,
input_set_abs_params(input_dev, ABS_MT_POSITION_X, MIN_X, MAX_X, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_Y, MIN_Y, MAX_Y, 0, 0);
- error = request_threaded_irq(client->irq, NULL, st1232_ts_irq_handler,
- IRQF_ONESHOT, client->name, ts);
+ error = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, st1232_ts_irq_handler,
+ IRQF_ONESHOT,
+ client->name, ts);
if (error) {
dev_err(&client->dev, "Failed to register interrupt\n");
- goto err_free_mem;
+ return error;
}
error = input_register_device(ts->input_dev);
if (error) {
dev_err(&client->dev, "Unable to register %s input device\n",
input_dev->name);
- goto err_free_irq;
+ return error;
}
i2c_set_clientdata(client, ts);
device_init_wakeup(&client->dev, 1);
return 0;
-
-err_free_irq:
- free_irq(client->irq, ts);
-err_free_mem:
- input_free_device(input_dev);
- kfree(ts);
- return error;
}
static int st1232_ts_remove(struct i2c_client *client)
@@ -211,9 +236,7 @@ static int st1232_ts_remove(struct i2c_client *client)
struct st1232_ts_data *ts = i2c_get_clientdata(client);
device_init_wakeup(&client->dev, 0);
- free_irq(client->irq, ts);
- input_unregister_device(ts->input_dev);
- kfree(ts);
+ st1232_ts_power(ts, false);
return 0;
}
@@ -222,11 +245,14 @@ static int st1232_ts_remove(struct i2c_client *client)
static int st1232_ts_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
+ struct st1232_ts_data *ts = i2c_get_clientdata(client);
- if (device_may_wakeup(&client->dev))
+ if (device_may_wakeup(&client->dev)) {
enable_irq_wake(client->irq);
- else
+ } else {
disable_irq(client->irq);
+ st1232_ts_power(ts, false);
+ }
return 0;
}
@@ -234,11 +260,14 @@ static int st1232_ts_suspend(struct device *dev)
static int st1232_ts_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
+ struct st1232_ts_data *ts = i2c_get_clientdata(client);
- if (device_may_wakeup(&client->dev))
+ if (device_may_wakeup(&client->dev)) {
disable_irq_wake(client->irq);
- else
+ } else {
+ st1232_ts_power(ts, true);
enable_irq(client->irq);
+ }
return 0;
}
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
new file mode 100644
index 000000000000..51e7b87827a4
--- /dev/null
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -0,0 +1,398 @@
+/*
+ * TI Touch Screen driver
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/input/ti_am335x_tsc.h>
+#include <linux/delay.h>
+
+#include <linux/mfd/ti_am335x_tscadc.h>
+
+#define ADCFSM_STEPID 0x10
+#define SEQ_SETTLE 275
+#define MAX_12BIT ((1 << 12) - 1)
+
+struct titsc {
+ struct input_dev *input;
+ struct ti_tscadc_dev *mfd_tscadc;
+ unsigned int irq;
+ unsigned int wires;
+ unsigned int x_plate_resistance;
+ bool pen_down;
+ int steps_to_configure;
+};
+
+static unsigned int titsc_readl(struct titsc *ts, unsigned int reg)
+{
+ return readl(ts->mfd_tscadc->tscadc_base + reg);
+}
+
+static void titsc_writel(struct titsc *tsc, unsigned int reg,
+ unsigned int val)
+{
+ writel(val, tsc->mfd_tscadc->tscadc_base + reg);
+}
+
+static void titsc_step_config(struct titsc *ts_dev)
+{
+ unsigned int config;
+ int i, total_steps;
+
+ /* Configure the Step registers */
+ total_steps = 2 * ts_dev->steps_to_configure;
+
+ config = STEPCONFIG_MODE_HWSYNC |
+ STEPCONFIG_AVG_16 | STEPCONFIG_XPP;
+ switch (ts_dev->wires) {
+ case 4:
+ config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN;
+ break;
+ case 5:
+ config |= STEPCONFIG_YNN |
+ STEPCONFIG_INP_AN4 | STEPCONFIG_XNN |
+ STEPCONFIG_YPP;
+ break;
+ case 8:
+ config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN;
+ break;
+ }
+
+ for (i = 1; i <= ts_dev->steps_to_configure; i++) {
+ titsc_writel(ts_dev, REG_STEPCONFIG(i), config);
+ titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
+ }
+
+ config = 0;
+ config = STEPCONFIG_MODE_HWSYNC |
+ STEPCONFIG_AVG_16 | STEPCONFIG_YNN |
+ STEPCONFIG_INM_ADCREFM | STEPCONFIG_FIFO1;
+ switch (ts_dev->wires) {
+ case 4:
+ config |= STEPCONFIG_YPP;
+ break;
+ case 5:
+ config |= STEPCONFIG_XPP | STEPCONFIG_INP_AN4 |
+ STEPCONFIG_XNP | STEPCONFIG_YPN;
+ break;
+ case 8:
+ config |= STEPCONFIG_YPP;
+ break;
+ }
+
+ for (i = (ts_dev->steps_to_configure + 1); i <= total_steps; i++) {
+ titsc_writel(ts_dev, REG_STEPCONFIG(i), config);
+ titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
+ }
+
+ config = 0;
+ /* Charge step configuration */
+ config = STEPCONFIG_XPP | STEPCONFIG_YNN |
+ STEPCHARGE_RFP_XPUL | STEPCHARGE_RFM_XNUR |
+ STEPCHARGE_INM_AN1 | STEPCHARGE_INP_AN1;
+
+ titsc_writel(ts_dev, REG_CHARGECONFIG, config);
+ titsc_writel(ts_dev, REG_CHARGEDELAY, CHARGEDLY_OPENDLY);
+
+ config = 0;
+ /* Configure to calculate pressure */
+ config = STEPCONFIG_MODE_HWSYNC |
+ STEPCONFIG_AVG_16 | STEPCONFIG_YPP |
+ STEPCONFIG_XNN | STEPCONFIG_INM_ADCREFM;
+ titsc_writel(ts_dev, REG_STEPCONFIG(total_steps + 1), config);
+ titsc_writel(ts_dev, REG_STEPDELAY(total_steps + 1),
+ STEPCONFIG_OPENDLY);
+
+ config |= STEPCONFIG_INP_AN3 | STEPCONFIG_FIFO1;
+ titsc_writel(ts_dev, REG_STEPCONFIG(total_steps + 2), config);
+ titsc_writel(ts_dev, REG_STEPDELAY(total_steps + 2),
+ STEPCONFIG_OPENDLY);
+
+ titsc_writel(ts_dev, REG_SE, STPENB_STEPENB_TC);
+}
+
+static void titsc_read_coordinates(struct titsc *ts_dev,
+ unsigned int *x, unsigned int *y)
+{
+ unsigned int fifocount = titsc_readl(ts_dev, REG_FIFO0CNT);
+ unsigned int prev_val_x = ~0, prev_val_y = ~0;
+ unsigned int prev_diff_x = ~0, prev_diff_y = ~0;
+ unsigned int read, diff;
+ unsigned int i, channel;
+
+ /*
+ * Delta filter is used to remove large variations in sampled
+ * values from ADC. The filter tries to predict where the next
+ * coordinate could be. This is done by taking a previous
+ * coordinate and subtracting it form current one. Further the
+ * algorithm compares the difference with that of a present value,
+ * if true the value is reported to the sub system.
+ */
+ for (i = 0; i < fifocount - 1; i++) {
+ read = titsc_readl(ts_dev, REG_FIFO0);
+ channel = read & 0xf0000;
+ channel = channel >> 0x10;
+ if ((channel >= 0) && (channel < ts_dev->steps_to_configure)) {
+ read &= 0xfff;
+ diff = abs(read - prev_val_x);
+ if (diff < prev_diff_x) {
+ prev_diff_x = diff;
+ *x = read;
+ }
+ prev_val_x = read;
+ }
+
+ read = titsc_readl(ts_dev, REG_FIFO1);
+ channel = read & 0xf0000;
+ channel = channel >> 0x10;
+ if ((channel >= ts_dev->steps_to_configure) &&
+ (channel < (2 * ts_dev->steps_to_configure - 1))) {
+ read &= 0xfff;
+ diff = abs(read - prev_val_y);
+ if (diff < prev_diff_y) {
+ prev_diff_y = diff;
+ *y = read;
+ }
+ prev_val_y = read;
+ }
+ }
+}
+
+static irqreturn_t titsc_irq(int irq, void *dev)
+{
+ struct titsc *ts_dev = dev;
+ struct input_dev *input_dev = ts_dev->input;
+ unsigned int status, irqclr = 0;
+ unsigned int x = 0, y = 0;
+ unsigned int z1, z2, z;
+ unsigned int fsm;
+ unsigned int fifo1count, fifo0count;
+ int i;
+
+ status = titsc_readl(ts_dev, REG_IRQSTATUS);
+ if (status & IRQENB_FIFO0THRES) {
+ titsc_read_coordinates(ts_dev, &x, &y);
+
+ z1 = titsc_readl(ts_dev, REG_FIFO0) & 0xfff;
+ z2 = titsc_readl(ts_dev, REG_FIFO1) & 0xfff;
+
+ fifo1count = titsc_readl(ts_dev, REG_FIFO1CNT);
+ for (i = 0; i < fifo1count; i++)
+ titsc_readl(ts_dev, REG_FIFO1);
+
+ fifo0count = titsc_readl(ts_dev, REG_FIFO0CNT);
+ for (i = 0; i < fifo0count; i++)
+ titsc_readl(ts_dev, REG_FIFO0);
+
+ if (ts_dev->pen_down && z1 != 0 && z2 != 0) {
+ /*
+ * Calculate pressure using formula
+ * Resistance(touch) = x plate resistance *
+ * x postion/4096 * ((z2 / z1) - 1)
+ */
+ z = z2 - z1;
+ z *= x;
+ z *= ts_dev->x_plate_resistance;
+ z /= z1;
+ z = (z + 2047) >> 12;
+
+ if (z <= MAX_12BIT) {
+ input_report_abs(input_dev, ABS_X, x);
+ input_report_abs(input_dev, ABS_Y, y);
+ input_report_abs(input_dev, ABS_PRESSURE, z);
+ input_report_key(input_dev, BTN_TOUCH, 1);
+ input_sync(input_dev);
+ }
+ }
+ irqclr |= IRQENB_FIFO0THRES;
+ }
+
+ /*
+ * Time for sequencer to settle, to read
+ * correct state of the sequencer.
+ */
+ udelay(SEQ_SETTLE);
+
+ status = titsc_readl(ts_dev, REG_RAWIRQSTATUS);
+ if (status & IRQENB_PENUP) {
+ /* Pen up event */
+ fsm = titsc_readl(ts_dev, REG_ADCFSM);
+ if (fsm == ADCFSM_STEPID) {
+ ts_dev->pen_down = false;
+ input_report_key(input_dev, BTN_TOUCH, 0);
+ input_report_abs(input_dev, ABS_PRESSURE, 0);
+ input_sync(input_dev);
+ } else {
+ ts_dev->pen_down = true;
+ }
+ irqclr |= IRQENB_PENUP;
+ }
+
+ titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);
+
+ titsc_writel(ts_dev, REG_SE, STPENB_STEPENB_TC);
+ return IRQ_HANDLED;
+}
+
+/*
+ * The functions for inserting/removing driver as a module.
+ */
+
+static int titsc_probe(struct platform_device *pdev)
+{
+ struct titsc *ts_dev;
+ struct input_dev *input_dev;
+ struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data;
+ struct mfd_tscadc_board *pdata;
+ int err;
+
+ pdata = tscadc_dev->dev->platform_data;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "Could not find platform data\n");
+ return -EINVAL;
+ }
+
+ /* Allocate memory for device */
+ ts_dev = kzalloc(sizeof(struct titsc), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!ts_dev || !input_dev) {
+ dev_err(&pdev->dev, "failed to allocate memory.\n");
+ err = -ENOMEM;
+ goto err_free_mem;
+ }
+
+ tscadc_dev->tsc = ts_dev;
+ ts_dev->mfd_tscadc = tscadc_dev;
+ ts_dev->input = input_dev;
+ ts_dev->irq = tscadc_dev->irq;
+ ts_dev->wires = pdata->tsc_init->wires;
+ ts_dev->x_plate_resistance = pdata->tsc_init->x_plate_resistance;
+ ts_dev->steps_to_configure = pdata->tsc_init->steps_to_configure;
+
+ err = request_irq(ts_dev->irq, titsc_irq,
+ 0, pdev->dev.driver->name, ts_dev);
+ if (err) {
+ dev_err(&pdev->dev, "failed to allocate irq.\n");
+ goto err_free_mem;
+ }
+
+ titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
+ titsc_step_config(ts_dev);
+ titsc_writel(ts_dev, REG_FIFO0THR, ts_dev->steps_to_configure);
+
+ input_dev->name = "ti-tsc";
+ input_dev->dev.parent = &pdev->dev;
+
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+ input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0);
+ input_set_abs_params(input_dev, ABS_PRESSURE, 0, MAX_12BIT, 0, 0);
+
+ /* register to the input system */
+ err = input_register_device(input_dev);
+ if (err)
+ goto err_free_irq;
+
+ platform_set_drvdata(pdev, ts_dev);
+ return 0;
+
+err_free_irq:
+ free_irq(ts_dev->irq, ts_dev);
+err_free_mem:
+ input_free_device(input_dev);
+ kfree(ts_dev);
+ return err;
+}
+
+static int titsc_remove(struct platform_device *pdev)
+{
+ struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data;
+ struct titsc *ts_dev = tscadc_dev->tsc;
+
+ free_irq(ts_dev->irq, ts_dev);
+
+ input_unregister_device(ts_dev->input);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(ts_dev);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int titsc_suspend(struct device *dev)
+{
+ struct ti_tscadc_dev *tscadc_dev = dev->platform_data;
+ struct titsc *ts_dev = tscadc_dev->tsc;
+ unsigned int idle;
+
+ if (device_may_wakeup(tscadc_dev->dev)) {
+ idle = titsc_readl(ts_dev, REG_IRQENABLE);
+ titsc_writel(ts_dev, REG_IRQENABLE,
+ (idle | IRQENB_HW_PEN));
+ titsc_writel(ts_dev, REG_IRQWAKEUP, IRQWKUP_ENB);
+ }
+ return 0;
+}
+
+static int titsc_resume(struct device *dev)
+{
+ struct ti_tscadc_dev *tscadc_dev = dev->platform_data;
+ struct titsc *ts_dev = tscadc_dev->tsc;
+
+ if (device_may_wakeup(tscadc_dev->dev)) {
+ titsc_writel(ts_dev, REG_IRQWAKEUP,
+ 0x00);
+ titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);
+ }
+ titsc_step_config(ts_dev);
+ titsc_writel(ts_dev, REG_FIFO0THR,
+ ts_dev->steps_to_configure);
+ return 0;
+}
+
+static const struct dev_pm_ops titsc_pm_ops = {
+ .suspend = titsc_suspend,
+ .resume = titsc_resume,
+};
+#define TITSC_PM_OPS (&titsc_pm_ops)
+#else
+#define TITSC_PM_OPS NULL
+#endif
+
+static struct platform_driver ti_tsc_driver = {
+ .probe = titsc_probe,
+ .remove = titsc_remove,
+ .driver = {
+ .name = "tsc",
+ .owner = THIS_MODULE,
+ .pm = TITSC_PM_OPS,
+ },
+};
+module_platform_driver(ti_tsc_driver);
+
+MODULE_DESCRIPTION("TI touchscreen controller driver");
+MODULE_AUTHOR("Rachna Patil <rachna@ti.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/ti_tscadc.c b/drivers/input/touchscreen/ti_tscadc.c
deleted file mode 100644
index bcedf2e7468c..000000000000
--- a/drivers/input/touchscreen/ti_tscadc.c
+++ /dev/null
@@ -1,486 +0,0 @@
-/*
- * TI Touch Screen driver
- *
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
- *
- * 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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/input.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/clk.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/input/ti_tscadc.h>
-#include <linux/delay.h>
-
-#define REG_IRQEOI 0x020
-#define REG_RAWIRQSTATUS 0x024
-#define REG_IRQSTATUS 0x028
-#define REG_IRQENABLE 0x02C
-#define REG_IRQWAKEUP 0x034
-#define REG_CTRL 0x040
-#define REG_ADCFSM 0x044
-#define REG_CLKDIV 0x04C
-#define REG_SE 0x054
-#define REG_IDLECONFIG 0x058
-#define REG_CHARGECONFIG 0x05C
-#define REG_CHARGEDELAY 0x060
-#define REG_STEPCONFIG(n) (0x64 + ((n - 1) * 8))
-#define REG_STEPDELAY(n) (0x68 + ((n - 1) * 8))
-#define REG_STEPCONFIG13 0x0C4
-#define REG_STEPDELAY13 0x0C8
-#define REG_STEPCONFIG14 0x0CC
-#define REG_STEPDELAY14 0x0D0
-#define REG_FIFO0CNT 0xE4
-#define REG_FIFO1THR 0xF4
-#define REG_FIFO0 0x100
-#define REG_FIFO1 0x200
-
-/* Register Bitfields */
-#define IRQWKUP_ENB BIT(0)
-#define STPENB_STEPENB 0x7FFF
-#define IRQENB_FIFO1THRES BIT(5)
-#define IRQENB_PENUP BIT(9)
-#define STEPCONFIG_MODE_HWSYNC 0x2
-#define STEPCONFIG_SAMPLES_AVG (1 << 4)
-#define STEPCONFIG_XPP (1 << 5)
-#define STEPCONFIG_XNN (1 << 6)
-#define STEPCONFIG_YPP (1 << 7)
-#define STEPCONFIG_YNN (1 << 8)
-#define STEPCONFIG_XNP (1 << 9)
-#define STEPCONFIG_YPN (1 << 10)
-#define STEPCONFIG_INM (1 << 18)
-#define STEPCONFIG_INP (1 << 20)
-#define STEPCONFIG_INP_5 (1 << 21)
-#define STEPCONFIG_FIFO1 (1 << 26)
-#define STEPCONFIG_OPENDLY 0xff
-#define STEPCONFIG_Z1 (3 << 19)
-#define STEPIDLE_INP (1 << 22)
-#define STEPCHARGE_RFP (1 << 12)
-#define STEPCHARGE_INM (1 << 15)
-#define STEPCHARGE_INP (1 << 19)
-#define STEPCHARGE_RFM (1 << 23)
-#define STEPCHARGE_DELAY 0x1
-#define CNTRLREG_TSCSSENB (1 << 0)
-#define CNTRLREG_STEPID (1 << 1)
-#define CNTRLREG_STEPCONFIGWRT (1 << 2)
-#define CNTRLREG_4WIRE (1 << 5)
-#define CNTRLREG_5WIRE (1 << 6)
-#define CNTRLREG_8WIRE (3 << 5)
-#define CNTRLREG_TSCENB (1 << 7)
-#define ADCFSM_STEPID 0x10
-
-#define SEQ_SETTLE 275
-#define ADC_CLK 3000000
-#define MAX_12BIT ((1 << 12) - 1)
-#define TSCADC_DELTA_X 15
-#define TSCADC_DELTA_Y 15
-
-struct tscadc {
- struct input_dev *input;
- struct clk *tsc_ick;
- void __iomem *tsc_base;
- unsigned int irq;
- unsigned int wires;
- unsigned int x_plate_resistance;
- bool pen_down;
-};
-
-static unsigned int tscadc_readl(struct tscadc *ts, unsigned int reg)
-{
- return readl(ts->tsc_base + reg);
-}
-
-static void tscadc_writel(struct tscadc *tsc, unsigned int reg,
- unsigned int val)
-{
- writel(val, tsc->tsc_base + reg);
-}
-
-static void tscadc_step_config(struct tscadc *ts_dev)
-{
- unsigned int config;
- int i;
-
- /* Configure the Step registers */
-
- config = STEPCONFIG_MODE_HWSYNC |
- STEPCONFIG_SAMPLES_AVG | STEPCONFIG_XPP;
- switch (ts_dev->wires) {
- case 4:
- config |= STEPCONFIG_INP | STEPCONFIG_XNN;
- break;
- case 5:
- config |= STEPCONFIG_YNN |
- STEPCONFIG_INP_5 | STEPCONFIG_XNN |
- STEPCONFIG_YPP;
- break;
- case 8:
- config |= STEPCONFIG_INP | STEPCONFIG_XNN;
- break;
- }
-
- for (i = 1; i < 7; i++) {
- tscadc_writel(ts_dev, REG_STEPCONFIG(i), config);
- tscadc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
- }
-
- config = 0;
- config = STEPCONFIG_MODE_HWSYNC |
- STEPCONFIG_SAMPLES_AVG | STEPCONFIG_YNN |
- STEPCONFIG_INM | STEPCONFIG_FIFO1;
- switch (ts_dev->wires) {
- case 4:
- config |= STEPCONFIG_YPP;
- break;
- case 5:
- config |= STEPCONFIG_XPP | STEPCONFIG_INP_5 |
- STEPCONFIG_XNP | STEPCONFIG_YPN;
- break;
- case 8:
- config |= STEPCONFIG_YPP;
- break;
- }
-
- for (i = 7; i < 13; i++) {
- tscadc_writel(ts_dev, REG_STEPCONFIG(i), config);
- tscadc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY);
- }
-
- config = 0;
- /* Charge step configuration */
- config = STEPCONFIG_XPP | STEPCONFIG_YNN |
- STEPCHARGE_RFP | STEPCHARGE_RFM |
- STEPCHARGE_INM | STEPCHARGE_INP;
-
- tscadc_writel(ts_dev, REG_CHARGECONFIG, config);
- tscadc_writel(ts_dev, REG_CHARGEDELAY, STEPCHARGE_DELAY);
-
- config = 0;
- /* Configure to calculate pressure */
- config = STEPCONFIG_MODE_HWSYNC |
- STEPCONFIG_SAMPLES_AVG | STEPCONFIG_YPP |
- STEPCONFIG_XNN | STEPCONFIG_INM;
- tscadc_writel(ts_dev, REG_STEPCONFIG13, config);
- tscadc_writel(ts_dev, REG_STEPDELAY13, STEPCONFIG_OPENDLY);
-
- config |= STEPCONFIG_Z1 | STEPCONFIG_FIFO1;
- tscadc_writel(ts_dev, REG_STEPCONFIG14, config);
- tscadc_writel(ts_dev, REG_STEPDELAY14, STEPCONFIG_OPENDLY);
-
- tscadc_writel(ts_dev, REG_SE, STPENB_STEPENB);
-}
-
-static void tscadc_idle_config(struct tscadc *ts_config)
-{
- unsigned int idleconfig;
-
- idleconfig = STEPCONFIG_YNN |
- STEPCONFIG_INM |
- STEPCONFIG_YPN | STEPIDLE_INP;
- tscadc_writel(ts_config, REG_IDLECONFIG, idleconfig);
-}
-
-static void tscadc_read_coordinates(struct tscadc *ts_dev,
- unsigned int *x, unsigned int *y)
-{
- unsigned int fifocount = tscadc_readl(ts_dev, REG_FIFO0CNT);
- unsigned int prev_val_x = ~0, prev_val_y = ~0;
- unsigned int prev_diff_x = ~0, prev_diff_y = ~0;
- unsigned int read, diff;
- unsigned int i;
-
- /*
- * Delta filter is used to remove large variations in sampled
- * values from ADC. The filter tries to predict where the next
- * coordinate could be. This is done by taking a previous
- * coordinate and subtracting it form current one. Further the
- * algorithm compares the difference with that of a present value,
- * if true the value is reported to the sub system.
- */
- for (i = 0; i < fifocount - 1; i++) {
- read = tscadc_readl(ts_dev, REG_FIFO0) & 0xfff;
- diff = abs(read - prev_val_x);
- if (diff < prev_diff_x) {
- prev_diff_x = diff;
- *x = read;
- }
- prev_val_x = read;
-
- read = tscadc_readl(ts_dev, REG_FIFO1) & 0xfff;
- diff = abs(read - prev_val_y);
- if (diff < prev_diff_y) {
- prev_diff_y = diff;
- *y = read;
- }
- prev_val_y = read;
- }
-}
-
-static irqreturn_t tscadc_irq(int irq, void *dev)
-{
- struct tscadc *ts_dev = dev;
- struct input_dev *input_dev = ts_dev->input;
- unsigned int status, irqclr = 0;
- unsigned int x = 0, y = 0;
- unsigned int z1, z2, z;
- unsigned int fsm;
-
- status = tscadc_readl(ts_dev, REG_IRQSTATUS);
- if (status & IRQENB_FIFO1THRES) {
- tscadc_read_coordinates(ts_dev, &x, &y);
-
- z1 = tscadc_readl(ts_dev, REG_FIFO0) & 0xfff;
- z2 = tscadc_readl(ts_dev, REG_FIFO1) & 0xfff;
-
- if (ts_dev->pen_down && z1 != 0 && z2 != 0) {
- /*
- * Calculate pressure using formula
- * Resistance(touch) = x plate resistance *
- * x postion/4096 * ((z2 / z1) - 1)
- */
- z = z2 - z1;
- z *= x;
- z *= ts_dev->x_plate_resistance;
- z /= z1;
- z = (z + 2047) >> 12;
-
- if (z <= MAX_12BIT) {
- input_report_abs(input_dev, ABS_X, x);
- input_report_abs(input_dev, ABS_Y, y);
- input_report_abs(input_dev, ABS_PRESSURE, z);
- input_report_key(input_dev, BTN_TOUCH, 1);
- input_sync(input_dev);
- }
- }
- irqclr |= IRQENB_FIFO1THRES;
- }
-
- /*
- * Time for sequencer to settle, to read
- * correct state of the sequencer.
- */
- udelay(SEQ_SETTLE);
-
- status = tscadc_readl(ts_dev, REG_RAWIRQSTATUS);
- if (status & IRQENB_PENUP) {
- /* Pen up event */
- fsm = tscadc_readl(ts_dev, REG_ADCFSM);
- if (fsm == ADCFSM_STEPID) {
- ts_dev->pen_down = false;
- input_report_key(input_dev, BTN_TOUCH, 0);
- input_report_abs(input_dev, ABS_PRESSURE, 0);
- input_sync(input_dev);
- } else {
- ts_dev->pen_down = true;
- }
- irqclr |= IRQENB_PENUP;
- }
-
- tscadc_writel(ts_dev, REG_IRQSTATUS, irqclr);
- /* check pending interrupts */
- tscadc_writel(ts_dev, REG_IRQEOI, 0x0);
-
- tscadc_writel(ts_dev, REG_SE, STPENB_STEPENB);
- return IRQ_HANDLED;
-}
-
-/*
- * The functions for inserting/removing driver as a module.
- */
-
-static int tscadc_probe(struct platform_device *pdev)
-{
- const struct tsc_data *pdata = pdev->dev.platform_data;
- struct resource *res;
- struct tscadc *ts_dev;
- struct input_dev *input_dev;
- struct clk *clk;
- int err;
- int clk_value, ctrl, irq;
-
- if (!pdata) {
- dev_err(&pdev->dev, "missing platform data.\n");
- return -EINVAL;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "no memory resource defined.\n");
- return -EINVAL;
- }
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(&pdev->dev, "no irq ID is specified.\n");
- return -EINVAL;
- }
-
- /* Allocate memory for device */
- ts_dev = kzalloc(sizeof(struct tscadc), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!ts_dev || !input_dev) {
- dev_err(&pdev->dev, "failed to allocate memory.\n");
- err = -ENOMEM;
- goto err_free_mem;
- }
-
- ts_dev->input = input_dev;
- ts_dev->irq = irq;
- ts_dev->wires = pdata->wires;
- ts_dev->x_plate_resistance = pdata->x_plate_resistance;
-
- res = request_mem_region(res->start, resource_size(res), pdev->name);
- if (!res) {
- dev_err(&pdev->dev, "failed to reserve registers.\n");
- err = -EBUSY;
- goto err_free_mem;
- }
-
- ts_dev->tsc_base = ioremap(res->start, resource_size(res));
- if (!ts_dev->tsc_base) {
- dev_err(&pdev->dev, "failed to map registers.\n");
- err = -ENOMEM;
- goto err_release_mem_region;
- }
-
- err = request_irq(ts_dev->irq, tscadc_irq,
- 0, pdev->dev.driver->name, ts_dev);
- if (err) {
- dev_err(&pdev->dev, "failed to allocate irq.\n");
- goto err_unmap_regs;
- }
-
- ts_dev->tsc_ick = clk_get(&pdev->dev, "adc_tsc_ick");
- if (IS_ERR(ts_dev->tsc_ick)) {
- dev_err(&pdev->dev, "failed to get TSC ick\n");
- goto err_free_irq;
- }
- clk_enable(ts_dev->tsc_ick);
-
- clk = clk_get(&pdev->dev, "adc_tsc_fck");
- if (IS_ERR(clk)) {
- dev_err(&pdev->dev, "failed to get TSC fck\n");
- err = PTR_ERR(clk);
- goto err_disable_clk;
- }
-
- clk_value = clk_get_rate(clk) / ADC_CLK;
- clk_put(clk);
-
- if (clk_value < 7) {
- dev_err(&pdev->dev, "clock input less than min clock requirement\n");
- goto err_disable_clk;
- }
- /* CLKDIV needs to be configured to the value minus 1 */
- tscadc_writel(ts_dev, REG_CLKDIV, clk_value - 1);
-
- /* Enable wake-up of the SoC using touchscreen */
- tscadc_writel(ts_dev, REG_IRQWAKEUP, IRQWKUP_ENB);
-
- ctrl = CNTRLREG_STEPCONFIGWRT |
- CNTRLREG_TSCENB |
- CNTRLREG_STEPID;
- switch (ts_dev->wires) {
- case 4:
- ctrl |= CNTRLREG_4WIRE;
- break;
- case 5:
- ctrl |= CNTRLREG_5WIRE;
- break;
- case 8:
- ctrl |= CNTRLREG_8WIRE;
- break;
- }
- tscadc_writel(ts_dev, REG_CTRL, ctrl);
-
- tscadc_idle_config(ts_dev);
- tscadc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO1THRES);
- tscadc_step_config(ts_dev);
- tscadc_writel(ts_dev, REG_FIFO1THR, 6);
-
- ctrl |= CNTRLREG_TSCSSENB;
- tscadc_writel(ts_dev, REG_CTRL, ctrl);
-
- input_dev->name = "ti-tsc-adc";
- input_dev->dev.parent = &pdev->dev;
-
- input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
- input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
-
- input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, 0, 0);
- input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0);
- input_set_abs_params(input_dev, ABS_PRESSURE, 0, MAX_12BIT, 0, 0);
-
- /* register to the input system */
- err = input_register_device(input_dev);
- if (err)
- goto err_disable_clk;
-
- platform_set_drvdata(pdev, ts_dev);
- return 0;
-
-err_disable_clk:
- clk_disable(ts_dev->tsc_ick);
- clk_put(ts_dev->tsc_ick);
-err_free_irq:
- free_irq(ts_dev->irq, ts_dev);
-err_unmap_regs:
- iounmap(ts_dev->tsc_base);
-err_release_mem_region:
- release_mem_region(res->start, resource_size(res));
-err_free_mem:
- input_free_device(input_dev);
- kfree(ts_dev);
- return err;
-}
-
-static int __devexit tscadc_remove(struct platform_device *pdev)
-{
- struct tscadc *ts_dev = platform_get_drvdata(pdev);
- struct resource *res;
-
- free_irq(ts_dev->irq, ts_dev);
-
- input_unregister_device(ts_dev->input);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- iounmap(ts_dev->tsc_base);
- release_mem_region(res->start, resource_size(res));
-
- clk_disable(ts_dev->tsc_ick);
- clk_put(ts_dev->tsc_ick);
-
- kfree(ts_dev);
-
- platform_set_drvdata(pdev, NULL);
- return 0;
-}
-
-static struct platform_driver ti_tsc_driver = {
- .probe = tscadc_probe,
- .remove = __devexit_p(tscadc_remove),
- .driver = {
- .name = "tsc",
- .owner = THIS_MODULE,
- },
-};
-module_platform_driver(ti_tsc_driver);
-
-MODULE_DESCRIPTION("TI touchscreen controller driver");
-MODULE_AUTHOR("Rachna Patil <rachna@ti.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/wm9712.c b/drivers/input/touchscreen/wm9712.c
index 6e743e3dfda4..16b52115c27f 100644
--- a/drivers/input/touchscreen/wm9712.c
+++ b/drivers/input/touchscreen/wm9712.c
@@ -162,14 +162,14 @@ static void wm9712_phy_init(struct wm97xx *wm)
if (rpu) {
dig2 &= 0xffc0;
dig2 |= WM9712_RPU(rpu);
- dev_dbg(wm->dev, "setting pen detect pull-up to %d Ohms",
+ dev_dbg(wm->dev, "setting pen detect pull-up to %d Ohms\n",
64000 / rpu);
}
/* WM9712 five wire */
if (five_wire) {
dig2 |= WM9712_45W;
- dev_dbg(wm->dev, "setting 5-wire touchscreen mode.");
+ dev_dbg(wm->dev, "setting 5-wire touchscreen mode.\n");
if (pil) {
dev_warn(wm->dev, "pressure measurement is not "
@@ -182,21 +182,21 @@ static void wm9712_phy_init(struct wm97xx *wm)
if (pil == 2) {
dig2 |= WM9712_PIL;
dev_dbg(wm->dev,
- "setting pressure measurement current to 400uA.");
+ "setting pressure measurement current to 400uA.\n");
} else if (pil)
dev_dbg(wm->dev,
- "setting pressure measurement current to 200uA.");
+ "setting pressure measurement current to 200uA.\n");
if (!pil)
pressure = 0;
/* polling mode sample settling delay */
if (delay < 0 || delay > 15) {
- dev_dbg(wm->dev, "supplied delay out of range.");
+ dev_dbg(wm->dev, "supplied delay out of range.\n");
delay = 4;
}
dig1 &= 0xff0f;
dig1 |= WM97XX_DELAY(delay);
- dev_dbg(wm->dev, "setting adc sample delay to %d u Secs.",
+ dev_dbg(wm->dev, "setting adc sample delay to %d u Secs.\n",
delay_table[delay]);
/* mask */
@@ -285,7 +285,7 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample)
if (is_pden(wm))
wm->pen_probably_down = 0;
else
- dev_dbg(wm->dev, "adc sample timeout");
+ dev_dbg(wm->dev, "adc sample timeout\n");
return RC_PENUP;
}
@@ -295,15 +295,19 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample)
/* check we have correct sample */
if ((*sample ^ adcsel) & WM97XX_ADCSEL_MASK) {
- dev_dbg(wm->dev, "adc wrong sample, wanted %x got %x",
+ dev_dbg(wm->dev, "adc wrong sample, wanted %x got %x\n",
adcsel & WM97XX_ADCSEL_MASK,
*sample & WM97XX_ADCSEL_MASK);
- return RC_PENUP;
+ return RC_AGAIN;
}
if (wants_pen && !(*sample & WM97XX_PEN_DOWN)) {
- wm->pen_probably_down = 0;
- return RC_PENUP;
+ /* Sometimes it reads a wrong value the first time. */
+ *sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);
+ if (!(*sample & WM97XX_PEN_DOWN)) {
+ wm->pen_probably_down = 0;
+ return RC_PENUP;
+ }
}
return RC_VALID;
@@ -345,7 +349,7 @@ static int wm9712_poll_coord(struct wm97xx *wm, struct wm97xx_data *data)
if (is_pden(wm))
wm->pen_probably_down = 0;
else
- dev_dbg(wm->dev, "adc sample timeout");
+ dev_dbg(wm->dev, "adc sample timeout\n");
return RC_PENUP;
}
diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index 5dbe73af2f8f..7e45c9f6e6b7 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -442,6 +442,16 @@ static int wm97xx_read_samples(struct wm97xx *wm)
"pen down: x=%x:%d, y=%x:%d, pressure=%x:%d\n",
data.x >> 12, data.x & 0xfff, data.y >> 12,
data.y & 0xfff, data.p >> 12, data.p & 0xfff);
+
+ if (abs_x[0] > (data.x & 0xfff) ||
+ abs_x[1] < (data.x & 0xfff) ||
+ abs_y[0] > (data.y & 0xfff) ||
+ abs_y[1] < (data.y & 0xfff)) {
+ dev_dbg(wm->dev, "Measurement out of range, dropping it\n");
+ rc = RC_AGAIN;
+ goto out;
+ }
+
input_report_abs(wm->input_dev, ABS_X, data.x & 0xfff);
input_report_abs(wm->input_dev, ABS_Y, data.y & 0xfff);
input_report_abs(wm->input_dev, ABS_PRESSURE, data.p & 0xfff);
@@ -455,6 +465,7 @@ static int wm97xx_read_samples(struct wm97xx *wm)
wm->ts_reader_interval = wm->ts_reader_min_interval;
}
+out:
mutex_unlock(&wm->codec_mutex);
return rc;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.