[PATCH 0/2] add driver for cypress cy8cmbr3102
* compiles without errors * no errors when using checkpatch * tested with a connected touch button on HW NOTE: This implementation does not implement the full range of functions the Cypress CY8CMBR3102 CapSense Express controller provides. It only implements its use for connected touch buttons (yet). Patrick Vogelaar (2): add driver for cypress cy8cmbr3102 add device tree documentation for cy8cmbr3102 .../bindings/input/cypress,cy8cmbr3102.txt | 32 +++ drivers/input/misc/Kconfig | 12 ++ drivers/input/misc/Makefile| 1 + drivers/input/misc/cy8cmbr3102.c | 222 + 4 files changed, 267 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt create mode 100644 drivers/input/misc/cy8cmbr3102.c -- 2.7.4
[PATCH 2/2] add device tree documentation for cy8cmbr3102
Signed-off-by: Patrick Vogelaar
---
.../bindings/input/cypress,cy8cmbr3102.txt | 32 ++
1 file changed, 32 insertions(+)
create mode 100644
Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
diff --git a/Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
b/Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
new file mode 100644
index 000..d5294b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
@@ -0,0 +1,32 @@
+Device tree bindings for Cypress CY8CMBR3102 CapSense Express controller.
+
+The node for this device must be a child of a I2C controller node, as the
+device communicates via I2C.
+
+Required properties:
+
+ compatible: Must be "cypress,cy8cmbr3102".
+ reg:The I2C slave address of the device.
+ linux,keycodes: Specifies an array of numeric keycode values to
+ be used for reporting button presses. The array can
+ contain up to two entries.
+
+Optional properties:
+
+ autorepeat: Enables the Linux input system's autorepeat
+ feature on the input device.
+
+Example:
+
+ &i2c1 {
+ /* ... */
+
+ touchb_tn: cy8cmbr3102@37 {
+ compatible = "cypress,cy8cmbr3102";
+ reg = <0x37>;
+ linux,keycodes = , ;
+ autorepeat;
+ };
+
+ /* ... */
+ };
--
2.7.4
[PATCH 1/2] add driver for cypress cy8cmbr3102
Signed-off-by: Patrick Vogelaar
---
drivers/input/misc/Kconfig | 12 +++
drivers/input/misc/Makefile | 1 +
drivers/input/misc/cy8cmbr3102.c | 222 +++
3 files changed, 235 insertions(+)
create mode 100644 drivers/input/misc/cy8cmbr3102.c
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 5b6c522..be3071e 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -822,4 +822,16 @@ config INPUT_HISI_POWERKEY
To compile this driver as a module, choose M here: the
module will be called hisi_powerkey.
+config INPUT_CY8CMBR3102
+ tristate "Cypress CY8CMBR3102 CapSense Express controller"
+ depends on I2C
+ select INPUT_POLLDEV
+ default n
+ help
+ Say yes here to enable support for the Cypress CY8CMBR3102
+ CapSense Express controller.
+
+ To compile this driver as a module, choose M here: the module
+ will be called cy8cmbr3102.
+
endif
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index b10523f..f9959ed 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -77,3 +77,4 @@ obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o
obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND)+= xen-kbdfront.o
obj-$(CONFIG_INPUT_YEALINK)+= yealink.o
obj-$(CONFIG_INPUT_IDEAPAD_SLIDEBAR) += ideapad_slidebar.o
+obj-$(CONFIG_INPUT_CY8CMBR3102)+= cy8cmbr3102.o
diff --git a/drivers/input/misc/cy8cmbr3102.c b/drivers/input/misc/cy8cmbr3102.c
new file mode 100644
index 000..e2f5167
--- /dev/null
+++ b/drivers/input/misc/cy8cmbr3102.c
@@ -0,0 +1,222 @@
+/* Driver for Cypress CY8CMBR3102 CapSense Express Controller
+ *
+ * (C) 2017 by Gigatronik Technologies GmbH
+ * Author: Patrick Vogelaar
+ * All rights reserved.
+ *
+ * This code is based on mma8450.c and atmel_captouch.c.
+ *
+ * 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 of the License.
+ *
+ * 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.
+ *
+ * NOTE: This implementation does not implement the full range of functions the
+ * Cypress CY8CMBR3102 CapSense Express controller provides. It only implements
+ * its use for connected touch buttons (yet).
+ */
+
+#define DRV_VERSION "0.1"
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+/* I2C Registers */
+#define CY8CMBR3102_DEVICE_ID_REG 0x90
+#define CY8CMBR3102_BUTTON_STAT0xAA
+
+
+#define CY8CMBR3102_MAX_NUM_OF_BUTTONS 0x02
+#define CY8CMBR3102_DRV_NAME "cy8cmbr3102"
+#define CY8CMBR3102_POLL_INTERVAL 200
+#define CY8CMBR3102_POLL_INTERVAL_MAX 300
+#define CY8CMBR3102_DEVICE_ID 2561
+#define CY8CMBR3102_MAX_RETRY 5
+
+/*
+ * @i2c_client: I2C slave device client pointer
+ * @idev: Input (polled) device pointer
+ * @num_btn: Number of buttons
+ * @keycodes: map of button# to KeyCode
+ * @cy8cmbr3102_lock: mutex lock
+ */
+struct cy8cmbr3102_device {
+ struct i2c_client *client;
+ struct input_polled_dev *idev;
+ u32 num_btn;
+ u32 keycodes[CY8CMBR3102_MAX_NUM_OF_BUTTONS];
+ struct mutex cy8cmbr3102_lock;
+};
+
+static const struct i2c_device_id cy8cmbr3102_idtable[] = {
+ {"cy8cmbr3102", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, cy8cmbr3102_idtable);
+
+static void cy8cmbr3102_poll(struct input_polled_dev *idev)
+{
+ struct cy8cmbr3102_device *dev = idev->private;
+ int i, ret, btn_state;
+
+ mutex_lock(&dev->cy8cmbr3102_lock);
+
+ ret = i2c_smbus_read_word_data(dev->client, CY8CMBR3102_BUTTON_STAT);
+ if (ret < 0) {
+ dev_err(&dev->client->dev, "i2c io error: %d\n", ret);
+ mutex_unlock(&dev->cy8cmbr3102_lock);
+ return;
+ }
+
+ for (i = 0; i < dev->num_btn; i++) {
+ btn_state = ret & (0x1 << i);
+ input_report_key(idev->input, dev->keycodes[i], btn_state);
+ input_sync(idev->input);
+ }
+
+ mutex_unlock(&dev->cy8cmbr3102_lock);
+}
+
+static int cy8cmbr3102_remove(struct i2c_client *client)
+{
+ struct cy8cmbr3102_device *dev = i2c_get_clientdata(client);
+ struct input_polled_dev *idev = dev->idev;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ mutex_destroy(&dev->cy8cmbr3102_lock);
+ input_unregister_polle
[PATCH v2 2/2] add device tree documentation for cy8cmbr3102
Version 2:
* based on branch next
Signed-off-by: Patrick Vogelaar
---
.../bindings/input/cypress,cy8cmbr3102.txt | 32 ++
1 file changed, 32 insertions(+)
create mode 100644
Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
diff --git a/Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
b/Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
new file mode 100644
index 000..d5294b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt
@@ -0,0 +1,32 @@
+Device tree bindings for Cypress CY8CMBR3102 CapSense Express controller.
+
+The node for this device must be a child of a I2C controller node, as the
+device communicates via I2C.
+
+Required properties:
+
+ compatible: Must be "cypress,cy8cmbr3102".
+ reg:The I2C slave address of the device.
+ linux,keycodes: Specifies an array of numeric keycode values to
+ be used for reporting button presses. The array can
+ contain up to two entries.
+
+Optional properties:
+
+ autorepeat: Enables the Linux input system's autorepeat
+ feature on the input device.
+
+Example:
+
+ &i2c1 {
+ /* ... */
+
+ touchb_tn: cy8cmbr3102@37 {
+ compatible = "cypress,cy8cmbr3102";
+ reg = <0x37>;
+ linux,keycodes = , ;
+ autorepeat;
+ };
+
+ /* ... */
+ };
--
2.7.4
[PATCH v2 0/2] add driver for cypress cy8cmbr3102
* compiles without errors * no errors when using checkpatch * tested with a connected touch button on HW NOTE: This implementation does not implement the full range of functions the Cypress CY8CMBR3102 CapSense Express controller provides. It only implements its use for connected touch buttons (yet). Version 2: * removed .owner * based on branch next Patrick Vogelaar (2): add driver for cypress cy8cmbr3102 add device tree documentation for cy8cmbr3102 .../bindings/input/cypress,cy8cmbr3102.txt | 32 +++ drivers/input/misc/Kconfig | 12 ++ drivers/input/misc/Makefile| 1 + drivers/input/misc/cy8cmbr3102.c | 221 + 4 files changed, 266 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/cypress,cy8cmbr3102.txt create mode 100644 drivers/input/misc/cy8cmbr3102.c -- 2.7.4
[PATCH v2 1/2] add driver for cypress cy8cmbr3102
Version 2:
* removed .owner
* based on branch next
Signed-off-by: Patrick Vogelaar
---
drivers/input/misc/Kconfig | 12 +++
drivers/input/misc/Makefile | 1 +
drivers/input/misc/cy8cmbr3102.c | 221 +++
3 files changed, 234 insertions(+)
create mode 100644 drivers/input/misc/cy8cmbr3102.c
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 5b6c522..be3071e 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -822,4 +822,16 @@ config INPUT_HISI_POWERKEY
To compile this driver as a module, choose M here: the
module will be called hisi_powerkey.
+config INPUT_CY8CMBR3102
+ tristate "Cypress CY8CMBR3102 CapSense Express controller"
+ depends on I2C
+ select INPUT_POLLDEV
+ default n
+ help
+ Say yes here to enable support for the Cypress CY8CMBR3102
+ CapSense Express controller.
+
+ To compile this driver as a module, choose M here: the module
+ will be called cy8cmbr3102.
+
endif
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index b10523f..f9959ed 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -77,3 +77,4 @@ obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o
obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND)+= xen-kbdfront.o
obj-$(CONFIG_INPUT_YEALINK)+= yealink.o
obj-$(CONFIG_INPUT_IDEAPAD_SLIDEBAR) += ideapad_slidebar.o
+obj-$(CONFIG_INPUT_CY8CMBR3102)+= cy8cmbr3102.o
diff --git a/drivers/input/misc/cy8cmbr3102.c b/drivers/input/misc/cy8cmbr3102.c
new file mode 100644
index 000..ed67a63
--- /dev/null
+++ b/drivers/input/misc/cy8cmbr3102.c
@@ -0,0 +1,221 @@
+/* Driver for Cypress CY8CMBR3102 CapSense Express Controller
+ *
+ * (C) 2017 by Gigatronik Technologies GmbH
+ * Author: Patrick Vogelaar
+ * All rights reserved.
+ *
+ * This code is based on mma8450.c and atmel_captouch.c.
+ *
+ * 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 of the License.
+ *
+ * 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.
+ *
+ * NOTE: This implementation does not implement the full range of functions the
+ * Cypress CY8CMBR3102 CapSense Express controller provides. It only implements
+ * its use for connected touch buttons (yet).
+ */
+
+#define DRV_VERSION "0.1"
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+/* I2C Registers */
+#define CY8CMBR3102_DEVICE_ID_REG 0x90
+#define CY8CMBR3102_BUTTON_STAT0xAA
+
+
+#define CY8CMBR3102_MAX_NUM_OF_BUTTONS 0x02
+#define CY8CMBR3102_DRV_NAME "cy8cmbr3102"
+#define CY8CMBR3102_POLL_INTERVAL 200
+#define CY8CMBR3102_POLL_INTERVAL_MAX 300
+#define CY8CMBR3102_DEVICE_ID 2561
+#define CY8CMBR3102_MAX_RETRY 5
+
+/*
+ * @i2c_client: I2C slave device client pointer
+ * @idev: Input (polled) device pointer
+ * @num_btn: Number of buttons
+ * @keycodes: map of button# to KeyCode
+ * @cy8cmbr3102_lock: mutex lock
+ */
+struct cy8cmbr3102_device {
+ struct i2c_client *client;
+ struct input_polled_dev *idev;
+ u32 num_btn;
+ u32 keycodes[CY8CMBR3102_MAX_NUM_OF_BUTTONS];
+ struct mutex cy8cmbr3102_lock;
+};
+
+static const struct i2c_device_id cy8cmbr3102_idtable[] = {
+ {"cy8cmbr3102", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, cy8cmbr3102_idtable);
+
+static void cy8cmbr3102_poll(struct input_polled_dev *idev)
+{
+ struct cy8cmbr3102_device *dev = idev->private;
+ int i, ret, btn_state;
+
+ mutex_lock(&dev->cy8cmbr3102_lock);
+
+ ret = i2c_smbus_read_word_data(dev->client, CY8CMBR3102_BUTTON_STAT);
+ if (ret < 0) {
+ dev_err(&dev->client->dev, "i2c io error: %d\n", ret);
+ mutex_unlock(&dev->cy8cmbr3102_lock);
+ return;
+ }
+
+ for (i = 0; i < dev->num_btn; i++) {
+ btn_state = ret & (0x1 << i);
+ input_report_key(idev->input, dev->keycodes[i], btn_state);
+ input_sync(idev->input);
+ }
+
+ mutex_unlock(&dev->cy8cmbr3102_lock);
+}
+
+static int cy8cmbr3102_remove(struct i2c_client *client)
+{
+ struct cy8cmbr3102_device *dev = i2c_get_clientdata(client);
+ struct input_polled_dev *idev = dev->idev;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ mutex_destroy(&dev->cy8
