[PATCH v7 0/5] Input: pixcir_i2c_ts: Add Type-B Multi-touch and DT support

[PATCH v7 0/5] Input: pixcir_i2c_ts: Add Type-B Multi-touch and DT support

[Roger Quadros]

Hi Dmitry,

These are the pending patches that didn't go through in the 3.16 merge window.
Please queue them for -next. Thanks.

The series does the following
- convert to Type-B multi touch protocol
- support upto 5 fingers with hardware supplied tracking IDs
- device tree support

Tony,

The last 2 patches fix the touch screen size property in the device tree since
we now use the unified touch screen properties.

cheers,
-roger

Changelog:

v7:
- Rebased on 3.16-rc1.

v6:
- Use unified touchscreen bindings.
- Update pointer math i.e. bufptr += 4 instead of &bufptr[4];

v5:
- Changed ts->exiting flag to ts->running in patch 2.
- Don't call pixcir_stop() from .suspend() if wakeup is required.

v4:
- Imporved pixcir_stop() as per Dmitry's suggestion.
- Removed unnecessary input_unregister_device() from .remove().

v3:
- Rebased to 3.15-rc3
- Fixed suspend while touchscreen in use
- Fixed module removal while touchscreen in use

v2:
- Addressed review comments and re-arranged patch order

v1:
- http://article.gmane.org/gmane.linux.kernel/1616417

--

Roger Quadros (5):
  Input: pixcir_i2c_ts: Use Type-B Multi-Touch protocol
  Input: pixcir_i2c_ts: support upto 5 fingers and hardware provided
    tracking IDs
  Input: pixcir_i2c_ts: Add device tree support
  ARM: dts: am43x-epos-evm: Update binding for touchscreen size
  ARM: dts: am437x-gp-evm: Update binding for touchscreen size

 .../bindings/input/touchscreen/pixcir_i2c_ts.txt   |  26 +++
 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 arch/arm/boot/dts/am437x-gp-evm.dts                |   4 +-
 arch/arm/boot/dts/am43x-epos-evm.dts               |   4 +-
 drivers/input/touchscreen/pixcir_i2c_ts.c          | 251 ++++++++++++++++++---
 include/linux/input/pixcir_ts.h                    |  12 +
 6 files changed, 259 insertions(+), 39 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/pixcir_i2c_ts.txt

-- 
1.8.3.2

[PATCH v7 1/5] Input: pixcir_i2c_ts: Use Type-B Multi-Touch protocol

[Roger Quadros]

Switch to using the Type-B Multi-Touch protocol.

Reviewed-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 drivers/input/touchscreen/pixcir_i2c_ts.c | 125 ++++++++++++++++++++++--------
 1 file changed, 94 insertions(+), 31 deletions(-)

diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
index 19c6c0f..0b01681 100644
--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -23,9 +23,12 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
+#include <linux/input/mt.h>
 #include <linux/input/pixcir_ts.h>
 #include <linux/gpio.h>
 
+#define PIXCIR_MAX_SLOTS       2
+
 struct pixcir_i2c_ts_data {
 	struct i2c_client *client;
 	struct input_dev *input;
@@ -33,12 +36,25 @@ struct pixcir_i2c_ts_data {
 	bool running;
 };
 
-static void pixcir_ts_poscheck(struct pixcir_i2c_ts_data *data)
+struct pixcir_touch {
+	int x;
+	int y;
+};
+
+struct pixcir_report_data {
+	int num_touches;
+	struct pixcir_touch touches[PIXCIR_MAX_SLOTS];
+};
+
+static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
+			    struct pixcir_report_data *report)
 {
-	struct pixcir_i2c_ts_data *tsdata = data;
 	u8 rdbuf[10], wrbuf[1] = { 0 };
+	u8 *bufptr;
 	u8 touch;
-	int ret;
+	int ret, i;
+
+	memset(report, 0, sizeof(struct pixcir_report_data));
 
 	ret = i2c_master_send(tsdata->client, wrbuf, sizeof(wrbuf));
 	if (ret != sizeof(wrbuf)) {
@@ -56,45 +72,85 @@ static void pixcir_ts_poscheck(struct pixcir_i2c_ts_data *data)
 		return;
 	}
 
-	touch = rdbuf[0];
-	if (touch) {
-		u16 posx1 = (rdbuf[3] << 8) | rdbuf[2];
-		u16 posy1 = (rdbuf[5] << 8) | rdbuf[4];
-		u16 posx2 = (rdbuf[7] << 8) | rdbuf[6];
-		u16 posy2 = (rdbuf[9] << 8) | rdbuf[8];
-
-		input_report_key(tsdata->input, BTN_TOUCH, 1);
-		input_report_abs(tsdata->input, ABS_X, posx1);
-		input_report_abs(tsdata->input, ABS_Y, posy1);
-
-		input_report_abs(tsdata->input, ABS_MT_POSITION_X, posx1);
-		input_report_abs(tsdata->input, ABS_MT_POSITION_Y, posy1);
-		input_mt_sync(tsdata->input);
-
-		if (touch == 2) {
-			input_report_abs(tsdata->input,
-					 ABS_MT_POSITION_X, posx2);
-			input_report_abs(tsdata->input,
-					 ABS_MT_POSITION_Y, posy2);
-			input_mt_sync(tsdata->input);
-		}
-	} else {
-		input_report_key(tsdata->input, BTN_TOUCH, 0);
+	touch = rdbuf[0] & 0x7;
+	if (touch > PIXCIR_MAX_SLOTS)
+		touch = PIXCIR_MAX_SLOTS;
+
+	report->num_touches = touch;
+	bufptr = &rdbuf[2];
+
+	for (i = 0; i < touch; i++) {
+		report->touches[i].x = (bufptr[1] << 8) | bufptr[0];
+		report->touches[i].y = (bufptr[3] << 8) | bufptr[2];
+
+		bufptr = bufptr + 4;
 	}
+}
+
+static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts,
+			     struct pixcir_report_data *report)
+{
+	struct input_mt_pos pos[PIXCIR_MAX_SLOTS];
+	int slots[PIXCIR_MAX_SLOTS];
+	struct pixcir_touch *touch;
+	int n, i, slot;
+	struct device *dev = &ts->client->dev;
+
+	n = report->num_touches;
+	if (n > PIXCIR_MAX_SLOTS)
+		n = PIXCIR_MAX_SLOTS;
 
-	input_sync(tsdata->input);
+	for (i = 0; i < n; i++) {
+		touch = &report->touches[i];
+		pos[i].x = touch->x;
+		pos[i].y = touch->y;
+	}
+
+	input_mt_assign_slots(ts->input, slots, pos, n);
+
+	for (i = 0; i < n; i++) {
+		touch = &report->touches[i];
+		slot = slots[i];
+
+		input_mt_slot(ts->input, slot);
+		input_mt_report_slot_state(ts->input,
+					   MT_TOOL_FINGER, true);
+
+		input_event(ts->input, EV_ABS, ABS_MT_POSITION_X, touch->x);
+		input_event(ts->input, EV_ABS, ABS_MT_POSITION_Y, touch->y);
+
+		dev_dbg(dev, "%d: slot %d, x %d, y %d\n",
+			i, slot, touch->x, touch->y);
+	}
+
+	input_mt_sync_frame(ts->input);
+	input_sync(ts->input);
 }
 
 static irqreturn_t pixcir_ts_isr(int irq, void *dev_id)
 {
 	struct pixcir_i2c_ts_data *tsdata = dev_id;
 	const struct pixcir_ts_platform_data *pdata = tsdata->chip;
+	struct pixcir_report_data report;
 
 	while (tsdata->running) {
-		pixcir_ts_poscheck(tsdata);
-
-		if (gpio_get_value(pdata->gpio_attb))
+		/* parse packet */
+		pixcir_ts_parse(tsdata, &report);
+
+		/* report it */
+		pixcir_ts_report(tsdata, &report);
+
+		if (gpio_get_value(pdata->gpio_attb)) {
+			if (report.num_touches) {
+				/*
+				 * Last report with no finger up?
+				 * Do it now then.
+				 */
+				input_mt_sync_frame(tsdata->input);
+				input_sync(tsdata->input);
+			}
 			break;
+		}
 
 		msleep(20);
 	}
@@ -371,6 +427,13 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 	input_set_abs_params(input, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0);
 	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0);
 
+	error = input_mt_init_slots(input, PIXCIR_MAX_SLOTS,
+				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+	if (error) {
+		dev_err(dev, "Error initializing Multi-Touch slots\n");
+		return error;
+	}
+
 	input_set_drvdata(input, tsdata);
 
 	error = devm_gpio_request_one(dev, pdata->gpio_attb,
-- 
1.8.3.2

[PATCH v7 2/5] Input: pixcir_i2c_ts: support upto 5 fingers and hardware provided tracking IDs

[Roger Quadros]

Some variants of the Pixcir touch controller support upto 5
simultaneous fingers and hardware tracking IDs. Prepare the driver
for that.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 drivers/input/touchscreen/pixcir_i2c_ts.c | 74 ++++++++++++++++++++++++-------
 include/linux/input/pixcir_ts.h           | 12 +++++
 2 files changed, 69 insertions(+), 17 deletions(-)

diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
index 0b01681..083af4f 100644
--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -27,18 +27,20 @@
 #include <linux/input/pixcir_ts.h>
 #include <linux/gpio.h>
 
-#define PIXCIR_MAX_SLOTS       2
+#define PIXCIR_MAX_SLOTS       5 /* Max fingers supported by driver */
 
 struct pixcir_i2c_ts_data {
 	struct i2c_client *client;
 	struct input_dev *input;
-	const struct pixcir_ts_platform_data *chip;
+	const struct pixcir_ts_platform_data *pdata;
 	bool running;
+	int max_fingers;	/* Max fingers supported in this instance */
 };
 
 struct pixcir_touch {
 	int x;
 	int y;
+	int id;
 };
 
 struct pixcir_report_data {
@@ -49,13 +51,21 @@ struct pixcir_report_data {
 static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
 			    struct pixcir_report_data *report)
 {
-	u8 rdbuf[10], wrbuf[1] = { 0 };
+	u8 rdbuf[2 + PIXCIR_MAX_SLOTS * 5];
+	u8 wrbuf[1] = { 0 };
 	u8 *bufptr;
 	u8 touch;
 	int ret, i;
+	int readsize;
+	const struct pixcir_i2c_chip_data *chip = &tsdata->pdata->chip;
 
 	memset(report, 0, sizeof(struct pixcir_report_data));
 
+	i = chip->has_hw_ids ? 1 : 0;
+	readsize = 2 + tsdata->max_fingers * (4 + i);
+	if (readsize > sizeof(rdbuf))
+		readsize = sizeof(rdbuf);
+
 	ret = i2c_master_send(tsdata->client, wrbuf, sizeof(wrbuf));
 	if (ret != sizeof(wrbuf)) {
 		dev_err(&tsdata->client->dev,
@@ -64,7 +74,7 @@ static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
 		return;
 	}
 
-	ret = i2c_master_recv(tsdata->client, rdbuf, sizeof(rdbuf));
+	ret = i2c_master_recv(tsdata->client, rdbuf, readsize);
 	if (ret != sizeof(rdbuf)) {
 		dev_err(&tsdata->client->dev,
 			"%s: i2c_master_recv failed(), ret=%d\n",
@@ -73,8 +83,8 @@ static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
 	}
 
 	touch = rdbuf[0] & 0x7;
-	if (touch > PIXCIR_MAX_SLOTS)
-		touch = PIXCIR_MAX_SLOTS;
+	if (touch > tsdata->max_fingers)
+		touch = tsdata->max_fingers;
 
 	report->num_touches = touch;
 	bufptr = &rdbuf[2];
@@ -83,7 +93,12 @@ static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
 		report->touches[i].x = (bufptr[1] << 8) | bufptr[0];
 		report->touches[i].y = (bufptr[3] << 8) | bufptr[2];
 
-		bufptr = bufptr + 4;
+		if (chip->has_hw_ids) {
+			report->touches[i].id = bufptr[4];
+			bufptr = bufptr + 5;
+		} else {
+			bufptr = bufptr + 4;
+		}
 	}
 }
 
@@ -95,22 +110,35 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts,
 	struct pixcir_touch *touch;
 	int n, i, slot;
 	struct device *dev = &ts->client->dev;
+	const struct pixcir_i2c_chip_data *chip = &ts->pdata->chip;
 
 	n = report->num_touches;
 	if (n > PIXCIR_MAX_SLOTS)
 		n = PIXCIR_MAX_SLOTS;
 
-	for (i = 0; i < n; i++) {
-		touch = &report->touches[i];
-		pos[i].x = touch->x;
-		pos[i].y = touch->y;
-	}
+	if (!chip->has_hw_ids) {
+		for (i = 0; i < n; i++) {
+			touch = &report->touches[i];
+			pos[i].x = touch->x;
+			pos[i].y = touch->y;
+		}
 
-	input_mt_assign_slots(ts->input, slots, pos, n);
+		input_mt_assign_slots(ts->input, slots, pos, n);
+	}
 
 	for (i = 0; i < n; i++) {
 		touch = &report->touches[i];
-		slot = slots[i];
+
+		if (chip->has_hw_ids) {
+			slot = input_mt_get_slot_by_key(ts->input, touch->id);
+			if (slot < 0) {
+				dev_dbg(dev, "no free slot for id 0x%x\n",
+					touch->id);
+				continue;
+			}
+		} else {
+			slot = slots[i];
+		}
 
 		input_mt_slot(ts->input, slot);
 		input_mt_report_slot_state(ts->input,
@@ -130,7 +158,7 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts,
 static irqreturn_t pixcir_ts_isr(int irq, void *dev_id)
 {
 	struct pixcir_i2c_ts_data *tsdata = dev_id;
-	const struct pixcir_ts_platform_data *pdata = tsdata->chip;
+	const struct pixcir_ts_platform_data *pdata = tsdata->pdata;
 	struct pixcir_report_data report;
 
 	while (tsdata->running) {
@@ -399,6 +427,11 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 		return -EINVAL;
 	}
 
+	if (pdata->chip.max_fingers <= 0) {
+		dev_err(dev, "Invalid max_fingers in pdata\n");
+		return -EINVAL;
+	}
+
 	tsdata = devm_kzalloc(dev, sizeof(*tsdata), GFP_KERNEL);
 	if (!tsdata)
 		return -ENOMEM;
@@ -411,7 +444,7 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 
 	tsdata->client = client;
 	tsdata->input = input;
-	tsdata->chip = pdata;
+	tsdata->pdata = pdata;
 
 	input->name = client->name;
 	input->id.bustype = BUS_I2C;
@@ -427,7 +460,14 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
 	input_set_abs_params(input, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0);
 	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0);
 
-	error = input_mt_init_slots(input, PIXCIR_MAX_SLOTS,
+	tsdata->max_fingers = tsdata->pdata->chip.max_fingers;
+	if (tsdata->max_fingers > PIXCIR_MAX_SLOTS) {
+		tsdata->max_fingers = PIXCIR_MAX_SLOTS;
+		dev_info(dev, "Limiting maximum fingers to %d\n",
+			 tsdata->max_fingers);
+	}
+
+	error = input_mt_init_slots(input, tsdata->max_fingers,
 				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
 	if (error) {
 		dev_err(dev, "Error initializing Multi-Touch slots\n");
diff --git a/include/linux/input/pixcir_ts.h b/include/linux/input/pixcir_ts.h
index 160cf35..7bae83b 100644
--- a/include/linux/input/pixcir_ts.h
+++ b/include/linux/input/pixcir_ts.h
@@ -43,10 +43,22 @@ enum pixcir_int_mode {
 #define PIXCIR_INT_ENABLE	(1UL << 3)
 #define PIXCIR_INT_POL_HIGH	(1UL << 2)
 
+/**
+ * struct pixcir_irc_chip_data - chip related data
+ * @max_fingers:	Max number of fingers reported simultaneously by h/w
+ * @has_hw_ids:		Hardware supports finger tracking IDs
+ *
+ */
+struct pixcir_i2c_chip_data {
+	u8 max_fingers;
+	bool has_hw_ids;
+};
+
 struct pixcir_ts_platform_data {
 	int x_max;
 	int y_max;
 	int gpio_attb;		/* GPIO connected to ATTB line */
+	struct pixcir_i2c_chip_data chip;
 };
 
 #endif
-- 
1.8.3.2

[PATCH v7 3/5] Input: pixcir_i2c_ts: Add device tree support

[Roger Quadros]

Provide device tree support and binding information.
Also provide support for a new chip "pixcir_tangoc".

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 .../bindings/input/touchscreen/pixcir_i2c_ts.txt   | 26 ++++++++
 .../devicetree/bindings/vendor-prefixes.txt        |  1 +
 drivers/input/touchscreen/pixcir_i2c_ts.c          | 78 ++++++++++++++++++++++
 3 files changed, 105 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/pixcir_i2c_ts.txt

diff --git a/Documentation/devicetree/bindings/input/touchscreen/pixcir_i2c_ts.txt b/Documentation/devicetree/bindings/input/touchscreen/pixcir_i2c_ts.txt
new file mode 100644
index 0000000..6e55109
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/pixcir_i2c_ts.txt
@@ -0,0 +1,26 @@
+* Pixcir I2C touchscreen controllers
+
+Required properties:
+- compatible: must be "pixcir,pixcir_ts" or "pixcir,pixcir_tangoc"
+- reg: I2C address of the chip
+- interrupts: interrupt to which the chip is connected
+- attb-gpio: GPIO connected to the ATTB line of the chip
+- touchscreen-size-x: horizontal resolution of touchscreen (in pixels)
+- touchscreen-size-y: vertical resolution of touchscreen (in pixels)
+
+Example:
+
+	i2c@00000000 {
+		/* ... */
+
+		pixcir_ts@5c {
+			compatible = "pixcir,pixcir_ts";
+			reg = <0x5c>;
+			interrupts = <2 0>;
+			attb-gpio = <&gpf 2 0 2>;
+			touchscreen-size-x = <800>;
+			touchscreen-size-y = <600>;
+		};
+
+		/* ... */
+	};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 4d7f375..364f18f 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -98,6 +98,7 @@ panasonic	Panasonic Corporation
 phytec	PHYTEC Messtechnik GmbH
 picochip	Picochip Ltd
 plathome	Plat'Home Co., Ltd.
+pixcir  PIXCIR MICROELECTRONICS Co., Ltd
 powervr	PowerVR (deprecated, use img)
 qca	Qualcomm Atheros, Inc.
 qcom	Qualcomm Technologies, Inc
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
index 083af4f..ed2fe96 100644
--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -26,6 +26,9 @@
 #include <linux/input/mt.h>
 #include <linux/input/pixcir_ts.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
 
 #define PIXCIR_MAX_SLOTS       5 /* Max fingers supported by driver */
 
@@ -407,16 +410,70 @@ unlock:
 static SIMPLE_DEV_PM_OPS(pixcir_dev_pm_ops,
 			 pixcir_i2c_ts_suspend, pixcir_i2c_ts_resume);
 
+#ifdef CONFIG_OF
+static const struct of_device_id pixcir_of_match[];
+
+static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev)
+{
+	struct pixcir_ts_platform_data *pdata;
+	struct device_node *np = dev->of_node;
+
+	const struct of_device_id *match;
+
+	match = of_match_device(of_match_ptr(pixcir_of_match), dev);
+	if (!match)
+		return ERR_PTR(-EINVAL);
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return ERR_PTR(-ENOMEM);
+
+	pdata->chip = *(const struct pixcir_i2c_chip_data *)match->data;
+
+	pdata->gpio_attb = of_get_named_gpio(np, "attb-gpio", 0);
+	/* gpio_attb validity is checked in probe */
+
+	if (of_property_read_u32(np, "touchscreen-size-x", &pdata->x_max)) {
+		dev_err(dev, "Failed to get touchscreen-size-x property\n");
+		return ERR_PTR(-EINVAL);
+	}
+	pdata->x_max -= 1;
+
+	if (of_property_read_u32(np, "touchscreen-size-y", &pdata->y_max)) {
+		dev_err(dev, "Failed to get touchscreen-size-y property\n");
+		return ERR_PTR(-EINVAL);
+	}
+	pdata->y_max -= 1;
+
+	dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__,
+		pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb);
+
+	return pdata;
+}
+#else
+static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev)
+{
+	return ERR_PTR(-EINVAL);
+}
+#endif
+
 static int pixcir_i2c_ts_probe(struct i2c_client *client,
 					 const struct i2c_device_id *id)
 {
 	const struct pixcir_ts_platform_data *pdata =
 			dev_get_platdata(&client->dev);
 	struct device *dev = &client->dev;
+	struct device_node *np = dev->of_node;
 	struct pixcir_i2c_ts_data *tsdata;
 	struct input_dev *input;
 	int error;
 
+	if (np && !pdata) {
+		pdata = pixcir_parse_dt(dev);
+		if (IS_ERR(pdata))
+			return PTR_ERR(pdata);
+	}
+
 	if (!pdata) {
 		dev_err(&client->dev, "platform data not defined\n");
 		return -EINVAL;
@@ -522,15 +579,36 @@ static int pixcir_i2c_ts_remove(struct i2c_client *client)
 
 static const struct i2c_device_id pixcir_i2c_ts_id[] = {
 	{ "pixcir_ts", 0 },
+	{ "pixcir_tangoc", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, pixcir_i2c_ts_id);
 
+#ifdef CONFIG_OF
+static const struct pixcir_i2c_chip_data pixcir_ts_data = {
+	.max_fingers = 2,
+	/* no hw id support */
+};
+
+static const struct pixcir_i2c_chip_data pixcir_tangoc_data = {
+	.max_fingers = 5,
+	.has_hw_ids = true,
+};
+
+static const struct of_device_id pixcir_of_match[] = {
+	{ .compatible = "pixcir,pixcir_ts", .data = &pixcir_ts_data },
+	{ .compatible = "pixcir,pixcir_tangoc", .data = &pixcir_tangoc_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pixcir_of_match);
+#endif
+
 static struct i2c_driver pixcir_i2c_ts_driver = {
 	.driver = {
 		.owner	= THIS_MODULE,
 		.name	= "pixcir_ts",
 		.pm	= &pixcir_dev_pm_ops,
+		.of_match_table = of_match_ptr(pixcir_of_match),
 	},
 	.probe		= pixcir_i2c_ts_probe,
 	.remove		= pixcir_i2c_ts_remove,
-- 
1.8.3.2

[PATCH v7 4/5] ARM: dts: am43x-epos-evm: Update binding for touchscreen size

[Roger Quadros]

Update the bindings for touchscreen size.

CC: Benoit Cousson <bcousson@baylibre.com>
CC: Tony Lindgren <tony@atomide.com>
CC: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/boot/dts/am43x-epos-evm.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 19f1f7e..f3fe017 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -340,8 +340,8 @@
 
 		attb-gpio = <&gpio1 17 GPIO_ACTIVE_HIGH>;
 
-		x-size = <1024>;
-		y-size = <600>;
+		touchscreen-size-x = <1024>;
+		touchscreen-size-y = <600>;
 	};
 };
 
-- 
1.8.3.2

[PATCH v7 5/5] ARM: dts: am437x-gp-evm: Update binding for touchscreen size

[Roger Quadros]

Update the bindings for touchscreen size.

CC: Benoit Cousson <bcousson@baylibre.com>
CC: Tony Lindgren <tony@atomide.com>
CC: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/boot/dts/am437x-gp-evm.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 003766c..2674132 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -277,8 +277,8 @@
 
 		attb-gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
 
-		x-size = <1024>;
-		y-size = <600>;
+		touchscreen-size-x = <1024>;
+		touchscreen-size-y = <600>;
 	};
 };
 
-- 
1.8.3.2

Re: [PATCH v7 4/5] ARM: dts: am43x-epos-evm: Update binding for touchscreen size

[Tony Lindgren]

* Roger Quadros <rogerq@ti.com> [140617 02:33]:
> Update the bindings for touchscreen size.
> 
> CC: Benoit Cousson <bcousson@baylibre.com>
> CC: Tony Lindgren <tony@atomide.com>
> CC: Mugunthan V N <mugunthanvnm@ti.com>
> Signed-off-by: Roger Quadros <rogerq@ti.com>

This should be fine to queue along with the driver changes:

Acked-by: Tony Lindgren <tony@atomide.com>

> ---
>  arch/arm/boot/dts/am43x-epos-evm.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
> index 19f1f7e..f3fe017 100644
> --- a/arch/arm/boot/dts/am43x-epos-evm.dts
> +++ b/arch/arm/boot/dts/am43x-epos-evm.dts
> @@ -340,8 +340,8 @@
>  
>  		attb-gpio = <&gpio1 17 GPIO_ACTIVE_HIGH>;
>  
> -		x-size = <1024>;
> -		y-size = <600>;
> +		touchscreen-size-x = <1024>;
> +		touchscreen-size-y = <600>;
>  	};
>  };
>  
> -- 
> 1.8.3.2
> 

Re: [PATCH v7 5/5] ARM: dts: am437x-gp-evm: Update binding for touchscreen size

[Tony Lindgren]

* Roger Quadros <rogerq@ti.com> [140617 02:33]:
> Update the bindings for touchscreen size.
> 
> CC: Benoit Cousson <bcousson@baylibre.com>
> CC: Tony Lindgren <tony@atomide.com>
> CC: Mugunthan V N <mugunthanvnm@ti.com>
> Signed-off-by: Roger Quadros <rogerq@ti.com>

This too:

Acked-by: Tony Lindgren <tony@atomide.com>

> ---
>  arch/arm/boot/dts/am437x-gp-evm.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
> index 003766c..2674132 100644
> --- a/arch/arm/boot/dts/am437x-gp-evm.dts
> +++ b/arch/arm/boot/dts/am437x-gp-evm.dts
> @@ -277,8 +277,8 @@
>  
>  		attb-gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
>  
> -		x-size = <1024>;
> -		y-size = <600>;
> +		touchscreen-size-x = <1024>;
> +		touchscreen-size-y = <600>;
>  	};
>  };
>  
> -- 
> 1.8.3.2
> 

Re: [PATCH v7 0/5] Input: pixcir_i2c_ts: Add Type-B Multi-touch and DT support

[Tony Lindgren]

* Roger Quadros <rogerq@ti.com> [140617 02:33]:
> Hi Dmitry,
> 
> These are the pending patches that didn't go through in the 3.16 merge window.
> Please queue them for -next. Thanks.
> 
> The series does the following
> - convert to Type-B multi touch protocol
> - support upto 5 fingers with hardware supplied tracking IDs
> - device tree support
> 
> Tony,
> 
> The last 2 patches fix the touch screen size property in the device tree since
> we now use the unified touch screen properties.

OK I acked those two pathes so Dmitry can take them too
when the driver changes get merged.

Regards,

Tony

Re: [PATCH v7 0/5] Input: pixcir_i2c_ts: Add Type-B Multi-touch and DT support

[Roger Quadros]

On 06/17/2014 12:51 PM, Tony Lindgren wrote:
> * Roger Quadros <rogerq@ti.com> [140617 02:33]:
>> Hi Dmitry,
>>
>> These are the pending patches that didn't go through in the 3.16 merge window.
>> Please queue them for -next. Thanks.
>>
>> The series does the following
>> - convert to Type-B multi touch protocol
>> - support upto 5 fingers with hardware supplied tracking IDs
>> - device tree support
>>
>> Tony,
>>
>> The last 2 patches fix the touch screen size property in the device tree since
>> we now use the unified touch screen properties.
> 
> OK I acked those two pathes so Dmitry can take them too
> when the driver changes get merged.
> 

Thanks Tony.

cheers,
-roger

Re: [PATCH v7 0/5] Input: pixcir_i2c_ts: Add Type-B Multi-touch and DT support

[Roger Quadros]

Hi Dmitry,

Gentle reminder to pick this series for -next. Thanks :).

cheers,
-roger

On 06/17/2014 12:31 PM, Roger Quadros wrote:
> Hi Dmitry,
> 
> These are the pending patches that didn't go through in the 3.16 merge window.
> Please queue them for -next. Thanks.
> 
> The series does the following
> - convert to Type-B multi touch protocol
> - support upto 5 fingers with hardware supplied tracking IDs
> - device tree support
> 
> Tony,
> 
> The last 2 patches fix the touch screen size property in the device tree since
> we now use the unified touch screen properties.
> 
> cheers,
> -roger
> 
> Changelog:
> 
> v7:
> - Rebased on 3.16-rc1.
> 
> v6:
> - Use unified touchscreen bindings.
> - Update pointer math i.e. bufptr += 4 instead of &bufptr[4];
> 
> v5:
> - Changed ts->exiting flag to ts->running in patch 2.
> - Don't call pixcir_stop() from .suspend() if wakeup is required.
> 
> v4:
> - Imporved pixcir_stop() as per Dmitry's suggestion.
> - Removed unnecessary input_unregister_device() from .remove().
> 
> v3:
> - Rebased to 3.15-rc3
> - Fixed suspend while touchscreen in use
> - Fixed module removal while touchscreen in use
> 
> v2:
> - Addressed review comments and re-arranged patch order
> 
> v1:
> - http://article.gmane.org/gmane.linux.kernel/1616417
> 
> --
> 
> Roger Quadros (5):
>   Input: pixcir_i2c_ts: Use Type-B Multi-Touch protocol
>   Input: pixcir_i2c_ts: support upto 5 fingers and hardware provided
>     tracking IDs
>   Input: pixcir_i2c_ts: Add device tree support
>   ARM: dts: am43x-epos-evm: Update binding for touchscreen size
>   ARM: dts: am437x-gp-evm: Update binding for touchscreen size
> 
>  .../bindings/input/touchscreen/pixcir_i2c_ts.txt   |  26 +++
>  .../devicetree/bindings/vendor-prefixes.txt        |   1 +
>  arch/arm/boot/dts/am437x-gp-evm.dts                |   4 +-
>  arch/arm/boot/dts/am43x-epos-evm.dts               |   4 +-
>  drivers/input/touchscreen/pixcir_i2c_ts.c          | 251 ++++++++++++++++++---
>  include/linux/input/pixcir_ts.h                    |  12 +
>  6 files changed, 259 insertions(+), 39 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/pixcir_i2c_ts.txt
> 

Re: [PATCH v7 0/5] Input: pixcir_i2c_ts: Add Type-B Multi-touch and DT support

[Roger Quadros]

Hi Dmitry,

Gentle ping. Would be nice to get these into 3.17. Thanks :).

cheers,
-roger

On 07/03/2014 12:34 PM, Roger Quadros wrote:
> Hi Dmitry,
> 
> Gentle reminder to pick this series for -next. Thanks :).
> 
> cheers,
> -roger
> 
> On 06/17/2014 12:31 PM, Roger Quadros wrote:
>> Hi Dmitry,
>>
>> These are the pending patches that didn't go through in the 3.16 merge window.
>> Please queue them for -next. Thanks.
>>
>> The series does the following
>> - convert to Type-B multi touch protocol
>> - support upto 5 fingers with hardware supplied tracking IDs
>> - device tree support
>>
>> Tony,
>>
>> The last 2 patches fix the touch screen size property in the device tree since
>> we now use the unified touch screen properties.
>>
>> cheers,
>> -roger
>>
>> Changelog:
>>
>> v7:
>> - Rebased on 3.16-rc1.
>>
>> v6:
>> - Use unified touchscreen bindings.
>> - Update pointer math i.e. bufptr += 4 instead of &bufptr[4];
>>
>> v5:
>> - Changed ts->exiting flag to ts->running in patch 2.
>> - Don't call pixcir_stop() from .suspend() if wakeup is required.
>>
>> v4:
>> - Imporved pixcir_stop() as per Dmitry's suggestion.
>> - Removed unnecessary input_unregister_device() from .remove().
>>
>> v3:
>> - Rebased to 3.15-rc3
>> - Fixed suspend while touchscreen in use
>> - Fixed module removal while touchscreen in use
>>
>> v2:
>> - Addressed review comments and re-arranged patch order
>>
>> v1:
>> - http://article.gmane.org/gmane.linux.kernel/1616417
>>
>> --
>>
>> Roger Quadros (5):
>>   Input: pixcir_i2c_ts: Use Type-B Multi-Touch protocol
>>   Input: pixcir_i2c_ts: support upto 5 fingers and hardware provided
>>     tracking IDs
>>   Input: pixcir_i2c_ts: Add device tree support
>>   ARM: dts: am43x-epos-evm: Update binding for touchscreen size
>>   ARM: dts: am437x-gp-evm: Update binding for touchscreen size
>>
>>  .../bindings/input/touchscreen/pixcir_i2c_ts.txt   |  26 +++
>>  .../devicetree/bindings/vendor-prefixes.txt        |   1 +
>>  arch/arm/boot/dts/am437x-gp-evm.dts                |   4 +-
>>  arch/arm/boot/dts/am43x-epos-evm.dts               |   4 +-
>>  drivers/input/touchscreen/pixcir_i2c_ts.c          | 251 ++++++++++++++++++---
>>  include/linux/input/pixcir_ts.h                    |  12 +
>>  6 files changed, 259 insertions(+), 39 deletions(-)
>>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/pixcir_i2c_ts.txt
>>
>