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-rw-r--r--drivers/input/touchscreen/fusion_F0710A.c47
-rw-r--r--include/linux/input/fusion_F0710A.h20
2 files changed, 67 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/fusion_F0710A.c b/drivers/input/touchscreen/fusion_F0710A.c
index 2cd2096c3b98..1546e6a18512 100644
--- a/drivers/input/touchscreen/fusion_F0710A.c
+++ b/drivers/input/touchscreen/fusion_F0710A.c
@@ -16,6 +16,7 @@
#include <linux/delay.h>
#include <asm/irq.h>
#include <linux/gpio.h>
+#include <linux/input/fusion_F0710A.h>
#include "fusion_F0710A.h"
@@ -286,10 +287,52 @@ const static u8* g_ver_product[4] = {
static int fusion_F0710A_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
{
+ struct fusion_f0710a_init_data *pdata = i2c->dev.platform_data;
int ret;
u8 ver_product, ver_id;
u32 version;
+ if (pdata == NULL)
+ {
+ dev_err(&i2c->dev, "No platform data for Fusion driver\n");
+ return -ENODEV;
+ }
+
+ /* Request pinmuxing, if necessary */
+ if (pdata->pinmux_fusion_pins != NULL)
+ {
+ ret = pdata->pinmux_fusion_pins();
+ if (ret < 0) {
+ dev_err(&i2c->dev, "muxing GPIOs failed\n");
+ return -ENODEV;
+ }
+ }
+
+ if ((gpio_request(pdata->gpio_int, "SO-DIMM 28 (Iris X16-38 Pen)") == 0) &&
+ (gpio_direction_input(pdata->gpio_int) == 0)) {
+ gpio_export(pdata->gpio_int, 0);
+ } else {
+ printk(KERN_WARNING "Could not obtain GPIO for Fusion pen down\n");
+ return -ENODEV;
+ }
+
+ if ((gpio_request(pdata->gpio_reset, "SO-DIMM 30 (Iris X16-39 RST)") == 0) &&
+ (gpio_direction_output(pdata->gpio_reset, 1) == 0)) {
+
+ /* Generate a 0 => 1 edge explicitly... */
+ gpio_set_value(pdata->gpio_reset, 0);
+ mdelay(10);
+ gpio_set_value(pdata->gpio_reset, 1);
+
+ gpio_export(pdata->gpio_reset, 0);
+ } else {
+ printk(KERN_WARNING "Could not obtain GPIO for Fusion reset\n");
+ return -ENODEV;
+ }
+
+ /* Use Pen Down GPIO as sampling interrupt */
+ i2c->irq = gpio_to_irq(pdata->gpio_int);
+
if(!i2c->irq)
{
dev_err(&i2c->dev, "fusion_F0710A irq < 0 \n");
@@ -412,6 +455,10 @@ static int fusion_F0710A_resume(struct i2c_client *i2c)
static int fusion_F0710A_remove(struct i2c_client *i2c)
{
+ struct fusion_f0710a_init_data *pdata = i2c->dev.platform_data;
+
+ gpio_free(pdata->gpio_int);
+ gpio_free(pdata->gpio_reset);
destroy_workqueue(fusion_F0710A.workq);
free_irq(i2c->irq, &fusion_F0710A);
input_unregister_device(fusion_F0710A.input);
diff --git a/include/linux/input/fusion_F0710A.h b/include/linux/input/fusion_F0710A.h
new file mode 100644
index 000000000000..7d152cbdd06e
--- /dev/null
+++ b/include/linux/input/fusion_F0710A.h
@@ -0,0 +1,20 @@
+/* linux/input/fusion_F0710A.h
+ *
+ * Platform data for Fusion F0710A driver
+ *
+ * Copyright (c) 2013 Toradex AG (stefan.agner@toradex.ch)
+ *
+ * For licencing details see kernel-base/COPYING
+ */
+
+#ifndef __LINUX_I2C_FUSION_F0710A_H
+#define __LINUX_I2C_FUSION_F0710A_H
+
+/* Board specific touch screen initial values */
+struct fusion_f0710a_init_data {
+ int (*pinmux_fusion_pins)(void);
+ int gpio_int;
+ int gpio_reset;
+};
+
+#endif /* __LINUX_I2C_FUSION_F0710A_H */