1 files changed, 0 insertions, 490 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0423-Input-ili210x-fetch-touchscreen-geometry-from-DT.patch b/target/linux/brcm2708/patches-4.19/950-0423-Input-ili210x-fetch-touchscreen-geometry-from-DT.patch
deleted file mode 100644
index 763bcbbf5f..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0423-Input-ili210x-fetch-touchscreen-geometry-from-DT.patch
+++ /dev/null
@@ -1,490 +0,0 @@
-From 7424847b3053bb995d52b13b6b7a387d682cde31 Mon Sep 17 00:00:00 2001
-From: Samuel Hsu <hsu@distec.de>
-Date: Mon, 8 Apr 2019 16:42:17 +0200
-Subject: [PATCH 423/703] Input: ili210x - fetch touchscreen geometry from DT
-
-commit f67cc3e927d8414ad3872e046764534ea1f5db0d upstream
-
-Fetching the geometry from the ILI251x registers seems unreliable and
-sometimes returns all zeroes. Add support for fetching the geometry and
-axis inversion from DT instead.
-
-Signed-off-by: Marek Vasut <marex@denx.de>
-Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
----
- drivers/input/touchscreen/ili210x.c | 321 +++++++++++++++++-----------
- 1 file changed, 194 insertions(+), 127 deletions(-)
-
---- a/drivers/input/touchscreen/ili210x.c
-+++ b/drivers/input/touchscreen/ili210x.c
-@@ -4,11 +4,15 @@
- #include <linux/slab.h>
- #include <linux/input.h>
- #include <linux/input/mt.h>
-+#include <linux/input/touchscreen.h>
- #include <linux/delay.h>
- #include <linux/workqueue.h>
--#include <linux/input/ili210x.h>
-+#include <linux/gpio/consumer.h>
-+#include <linux/of_device.h>
-+#include <asm/unaligned.h>
- 
--#define MAX_TOUCHES		2
-+#define ILI210X_TOUCHES		2
-+#define ILI251X_TOUCHES		10
- #define DEFAULT_POLL_PERIOD	20
- 
- /* Touchscreen commands */
-@@ -17,41 +21,32 @@
- #define REG_FIRMWARE_VERSION	0x40
- #define REG_CALIBRATE		0xcc
- 
--struct finger {
--	u8 x_low;
--	u8 x_high;
--	u8 y_low;
--	u8 y_high;
--} __packed;
--
--struct touchdata {
--	u8 status;
--	struct finger finger[MAX_TOUCHES];
--} __packed;
--
--struct panel_info {
--	struct finger finger_max;
--	u8 xchannel_num;
--	u8 ychannel_num;
--} __packed;
--
- struct firmware_version {
- 	u8 id;
- 	u8 major;
- 	u8 minor;
- } __packed;
- 
-+enum ili2xxx_model {
-+	MODEL_ILI210X,
-+	MODEL_ILI251X,
-+};
-+
- struct ili210x {
- 	struct i2c_client *client;
- 	struct input_dev *input;
--	bool (*get_pendown_state)(void);
- 	unsigned int poll_period;
- 	struct delayed_work dwork;
-+	struct gpio_desc *reset_gpio;
-+	struct touchscreen_properties prop;
-+	enum ili2xxx_model model;
-+	unsigned int max_touches;
- };
- 
- static int ili210x_read_reg(struct i2c_client *client, u8 reg, void *buf,
- 			    size_t len)
- {
-+	struct ili210x *priv = i2c_get_clientdata(client);
- 	struct i2c_msg msg[2] = {
- 		{
- 			.addr	= client->addr,
-@@ -67,7 +62,38 @@ static int ili210x_read_reg(struct i2c_c
- 		}
- 	};
- 
--	if (i2c_transfer(client->adapter, msg, 2) != 2) {
-+	if (priv->model == MODEL_ILI251X) {
-+		if (i2c_transfer(client->adapter, msg, 1) != 1) {
-+			dev_err(&client->dev, "i2c transfer failed\n");
-+			return -EIO;
-+		}
-+
-+		usleep_range(5000, 5500);
-+
-+		if (i2c_transfer(client->adapter, msg + 1, 1) != 1) {
-+			dev_err(&client->dev, "i2c transfer failed\n");
-+			return -EIO;
-+		}
-+	} else {
-+		if (i2c_transfer(client->adapter, msg, 2) != 2) {
-+			dev_err(&client->dev, "i2c transfer failed\n");
-+			return -EIO;
-+		}
-+	}
-+
-+	return 0;
-+}
-+
-+static int ili210x_read(struct i2c_client *client, void *buf, size_t len)
-+{
-+	struct i2c_msg msg = {
-+		.addr	= client->addr,
-+		.flags	= I2C_M_RD,
-+		.len	= len,
-+		.buf	= buf,
-+	};
-+
-+	if (i2c_transfer(client->adapter, &msg, 1) != 1) {
- 		dev_err(&client->dev, "i2c transfer failed\n");
- 		return -EIO;
- 	}
-@@ -75,42 +101,72 @@ static int ili210x_read_reg(struct i2c_c
- 	return 0;
- }
- 
--static void ili210x_report_events(struct input_dev *input,
--				  const struct touchdata *touchdata)
-+static bool ili210x_touchdata_to_coords(struct ili210x *priv, u8 *touchdata,
-+					unsigned int finger,
-+					unsigned int *x, unsigned int *y)
- {
--	int i;
--	bool touch;
--	unsigned int x, y;
--	const struct finger *finger;
-+	if (finger >= ILI210X_TOUCHES)
-+		return false;
- 
--	for (i = 0; i < MAX_TOUCHES; i++) {
--		input_mt_slot(input, i);
-+	if (touchdata[0] & BIT(finger))
-+		return false;
- 
--		finger = &touchdata->finger[i];
-+	*x = get_unaligned_be16(touchdata + 1 + (finger * 4) + 0);
-+	*y = get_unaligned_be16(touchdata + 1 + (finger * 4) + 2);
- 
--		touch = touchdata->status & (1 << i);
--		input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
--		if (touch) {
--			x = finger->x_low | (finger->x_high << 8);
--			y = finger->y_low | (finger->y_high << 8);
-+	return true;
-+}
-+
-+static bool ili251x_touchdata_to_coords(struct ili210x *priv, u8 *touchdata,
-+					unsigned int finger,
-+					unsigned int *x, unsigned int *y)
-+{
-+	if (finger >= ILI251X_TOUCHES)
-+		return false;
-+
-+	*x = get_unaligned_be16(touchdata + 1 + (finger * 5) + 0);
-+	if (!(*x & BIT(15)))	/* Touch indication */
-+		return false;
-+
-+	*x &= 0x3fff;
-+	*y = get_unaligned_be16(touchdata + 1 + (finger * 5) + 2);
-+
-+	return true;
-+}
-+
-+static bool ili210x_report_events(struct ili210x *priv, u8 *touchdata)
-+{
-+	struct input_dev *input = priv->input;
-+	int i;
-+	bool contact = false, touch = false;
-+	unsigned int x = 0, y = 0;
- 
--			input_report_abs(input, ABS_MT_POSITION_X, x);
--			input_report_abs(input, ABS_MT_POSITION_Y, y);
-+	for (i = 0; i < priv->max_touches; i++) {
-+		if (priv->model == MODEL_ILI210X) {
-+			touch = ili210x_touchdata_to_coords(priv, touchdata,
-+							    i, &x, &y);
-+		} else if (priv->model == MODEL_ILI251X) {
-+			touch = ili251x_touchdata_to_coords(priv, touchdata,
-+							    i, &x, &y);
-+			if (touch)
-+				contact = true;
- 		}
-+
-+		input_mt_slot(input, i);
-+		input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
-+		if (!touch)
-+			continue;
-+		touchscreen_report_pos(input, &priv->prop, x, y,
-+				       true);
- 	}
- 
- 	input_mt_report_pointer_emulation(input, false);
- 	input_sync(input);
--}
- 
--static bool get_pendown_state(const struct ili210x *priv)
--{
--	bool state = false;
--
--	if (priv->get_pendown_state)
--		state = priv->get_pendown_state();
-+	if (priv->model == MODEL_ILI210X)
-+		contact = touchdata[0] & 0xf3;
- 
--	return state;
-+	return contact;
- }
- 
- static void ili210x_work(struct work_struct *work)
-@@ -118,20 +174,29 @@ static void ili210x_work(struct work_str
- 	struct ili210x *priv = container_of(work, struct ili210x,
- 					    dwork.work);
- 	struct i2c_client *client = priv->client;
--	struct touchdata touchdata;
--	int error;
-+	u8 touchdata[64] = { 0 };
-+	bool touch;
-+	int error = -EINVAL;
-+
-+	if (priv->model == MODEL_ILI210X) {
-+		error = ili210x_read_reg(client, REG_TOUCHDATA,
-+					 touchdata, sizeof(touchdata));
-+	} else if (priv->model == MODEL_ILI251X) {
-+		error = ili210x_read_reg(client, REG_TOUCHDATA,
-+					 touchdata, 31);
-+		if (!error && touchdata[0] == 2)
-+			error = ili210x_read(client, &touchdata[31], 20);
-+	}
- 
--	error = ili210x_read_reg(client, REG_TOUCHDATA,
--				 &touchdata, sizeof(touchdata));
- 	if (error) {
- 		dev_err(&client->dev,
- 			"Unable to get touchdata, err = %d\n", error);
- 		return;
- 	}
- 
--	ili210x_report_events(priv->input, &touchdata);
-+	touch = ili210x_report_events(priv, touchdata);
- 
--	if ((touchdata.status & 0xf3) || get_pendown_state(priv))
-+	if (touch)
- 		schedule_delayed_work(&priv->dwork,
- 				      msecs_to_jiffies(priv->poll_period));
- }
-@@ -180,30 +245,76 @@ static const struct attribute_group ili2
- 	.attrs = ili210x_attributes,
- };
- 
-+static void ili210x_power_down(void *data)
-+{
-+	struct gpio_desc *reset_gpio = data;
-+
-+	gpiod_set_value_cansleep(reset_gpio, 1);
-+}
-+
-+static void ili210x_cancel_work(void *data)
-+{
-+	struct ili210x *priv = data;
-+
-+	cancel_delayed_work_sync(&priv->dwork);
-+}
-+
- static int ili210x_i2c_probe(struct i2c_client *client,
- 				       const struct i2c_device_id *id)
- {
- 	struct device *dev = &client->dev;
--	const struct ili210x_platform_data *pdata = dev_get_platdata(dev);
- 	struct ili210x *priv;
-+	struct gpio_desc *reset_gpio;
- 	struct input_dev *input;
--	struct panel_info panel;
- 	struct firmware_version firmware;
--	int xmax, ymax;
-+	enum ili2xxx_model model;
- 	int error;
- 
--	dev_dbg(dev, "Probing for ILI210X I2C Touschreen driver");
-+	model = (enum ili2xxx_model)id->driver_data;
- 
--	if (!pdata) {
--		dev_err(dev, "No platform data!\n");
--		return -EINVAL;
--	}
-+	dev_dbg(dev, "Probing for ILI210X I2C Touschreen driver");
- 
- 	if (client->irq <= 0) {
- 		dev_err(dev, "No IRQ!\n");
- 		return -EINVAL;
- 	}
- 
-+	reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
-+	if (IS_ERR(reset_gpio))
-+		return PTR_ERR(reset_gpio);
-+
-+	if (reset_gpio) {
-+		error = devm_add_action_or_reset(dev, ili210x_power_down,
-+						 reset_gpio);
-+		if (error)
-+			return error;
-+
-+		usleep_range(50, 100);
-+		gpiod_set_value_cansleep(reset_gpio, 0);
-+		msleep(100);
-+	}
-+
-+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-+	if (!priv)
-+		return -ENOMEM;
-+
-+	input = devm_input_allocate_device(dev);
-+	if (!input)
-+		return -ENOMEM;
-+
-+	priv->client = client;
-+	priv->input = input;
-+	priv->poll_period = DEFAULT_POLL_PERIOD;
-+	INIT_DELAYED_WORK(&priv->dwork, ili210x_work);
-+	priv->reset_gpio = reset_gpio;
-+	priv->model = model;
-+	if (model == MODEL_ILI210X)
-+		priv->max_touches = ILI210X_TOUCHES;
-+	if (model == MODEL_ILI251X)
-+		priv->max_touches = ILI251X_TOUCHES;
-+
-+	i2c_set_clientdata(client, priv);
-+
- 	/* Get firmware version */
- 	error = ili210x_read_reg(client, REG_FIRMWARE_VERSION,
- 				 &firmware, sizeof(firmware));
-@@ -213,70 +324,40 @@ static int ili210x_i2c_probe(struct i2c_
- 		return error;
- 	}
- 
--	/* get panel info */
--	error = ili210x_read_reg(client, REG_PANEL_INFO, &panel, sizeof(panel));
--	if (error) {
--		dev_err(dev, "Failed to get panel information, err: %d\n",
--			error);
--		return error;
--	}
--
--	xmax = panel.finger_max.x_low | (panel.finger_max.x_high << 8);
--	ymax = panel.finger_max.y_low | (panel.finger_max.y_high << 8);
--
--	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
--	input = input_allocate_device();
--	if (!priv || !input) {
--		error = -ENOMEM;
--		goto err_free_mem;
--	}
--
--	priv->client = client;
--	priv->input = input;
--	priv->get_pendown_state = pdata->get_pendown_state;
--	priv->poll_period = pdata->poll_period ? : DEFAULT_POLL_PERIOD;
--	INIT_DELAYED_WORK(&priv->dwork, ili210x_work);
--
- 	/* Setup input device */
- 	input->name = "ILI210x Touchscreen";
- 	input->id.bustype = BUS_I2C;
- 	input->dev.parent = dev;
- 
--	__set_bit(EV_SYN, input->evbit);
--	__set_bit(EV_KEY, input->evbit);
--	__set_bit(EV_ABS, input->evbit);
--	__set_bit(BTN_TOUCH, input->keybit);
--
--	/* Single touch */
--	input_set_abs_params(input, ABS_X, 0, xmax, 0, 0);
--	input_set_abs_params(input, ABS_Y, 0, ymax, 0, 0);
--
- 	/* Multi touch */
--	input_mt_init_slots(input, MAX_TOUCHES, 0);
--	input_set_abs_params(input, ABS_MT_POSITION_X, 0, xmax, 0, 0);
--	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, ymax, 0, 0);
-+	input_set_abs_params(input, ABS_MT_POSITION_X, 0, 0xffff, 0, 0);
-+	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, 0xffff, 0, 0);
-+	touchscreen_parse_properties(input, true, &priv->prop);
-+	input_mt_init_slots(input, priv->max_touches, INPUT_MT_DIRECT);
- 
--	i2c_set_clientdata(client, priv);
-+	error = devm_add_action(dev, ili210x_cancel_work, priv);
-+	if (error)
-+		return error;
- 
--	error = request_irq(client->irq, ili210x_irq, pdata->irq_flags,
--			    client->name, priv);
-+	error = devm_request_irq(dev, client->irq, ili210x_irq, 0,
-+				 client->name, priv);
- 	if (error) {
- 		dev_err(dev, "Unable to request touchscreen IRQ, err: %d\n",
- 			error);
--		goto err_free_mem;
-+		return error;
- 	}
- 
--	error = sysfs_create_group(&dev->kobj, &ili210x_attr_group);
-+	error = devm_device_add_group(dev, &ili210x_attr_group);
- 	if (error) {
- 		dev_err(dev, "Unable to create sysfs attributes, err: %d\n",
- 			error);
--		goto err_free_irq;
-+		return error;
- 	}
- 
- 	error = input_register_device(priv->input);
- 	if (error) {
- 		dev_err(dev, "Cannot register input device, err: %d\n", error);
--		goto err_remove_sysfs;
-+		return error;
- 	}
- 
- 	device_init_wakeup(dev, 1);
-@@ -286,28 +367,6 @@ static int ili210x_i2c_probe(struct i2c_
- 		client->irq, firmware.id, firmware.major, firmware.minor);
- 
- 	return 0;
--
--err_remove_sysfs:
--	sysfs_remove_group(&dev->kobj, &ili210x_attr_group);
--err_free_irq:
--	free_irq(client->irq, priv);
--err_free_mem:
--	input_free_device(input);
--	kfree(priv);
--	return error;
--}
--
--static int ili210x_i2c_remove(struct i2c_client *client)
--{
--	struct ili210x *priv = i2c_get_clientdata(client);
--
--	sysfs_remove_group(&client->dev.kobj, &ili210x_attr_group);
--	free_irq(priv->client->irq, priv);
--	cancel_delayed_work_sync(&priv->dwork);
--	input_unregister_device(priv->input);
--	kfree(priv);
--
--	return 0;
- }
- 
- static int __maybe_unused ili210x_i2c_suspend(struct device *dev)
-@@ -334,19 +393,27 @@ static SIMPLE_DEV_PM_OPS(ili210x_i2c_pm,
- 			 ili210x_i2c_suspend, ili210x_i2c_resume);
- 
- static const struct i2c_device_id ili210x_i2c_id[] = {
--	{ "ili210x", 0 },
-+	{ "ili210x", MODEL_ILI210X },
-+	{ "ili251x", MODEL_ILI251X },
- 	{ }
- };
- MODULE_DEVICE_TABLE(i2c, ili210x_i2c_id);
- 
-+static const struct of_device_id ili210x_dt_ids[] = {
-+	{ .compatible = "ilitek,ili210x", .data = (void *)MODEL_ILI210X },
-+	{ .compatible = "ilitek,ili251x", .data = (void *)MODEL_ILI251X },
-+	{ },
-+};
-+MODULE_DEVICE_TABLE(of, ili210x_dt_ids);
-+
- static struct i2c_driver ili210x_ts_driver = {
- 	.driver = {
- 		.name = "ili210x_i2c",
- 		.pm = &ili210x_i2c_pm,
-+		.of_match_table = ili210x_dt_ids,
- 	},
- 	.id_table = ili210x_i2c_id,
- 	.probe = ili210x_i2c_probe,
--	.remove = ili210x_i2c_remove,
- };
- 
- module_i2c_driver(ili210x_ts_driver);