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-rw-r--r--Input-add-driver-for-the-Goodix-touchpanel.patch479
1 files changed, 0 insertions, 479 deletions
diff --git a/Input-add-driver-for-the-Goodix-touchpanel.patch b/Input-add-driver-for-the-Goodix-touchpanel.patch
deleted file mode 100644
index 30004ff92..000000000
--- a/Input-add-driver-for-the-Goodix-touchpanel.patch
+++ /dev/null
@@ -1,479 +0,0 @@
-From: Bastien Nocera <hadess@hadess.net>
-Date: Fri, 31 Oct 2014 09:26:16 -0700
-Subject: [PATCH] Input: add driver for the Goodix touchpanel
-
-Add a driver for the Goodix touchscreen panel found in Onda v975w tablets.
-The driver is based off the Android driver gt9xx.c found in some Android
-code dumps, but now bears no resemblance to the original driver.
-
-The driver was tested on the aforementioned tablet.
-
-Signed-off-by: Bastien Nocera <hadess@hadess.net>
-Tested-by: Bastien Nocera <hadess@hadess.net>
-Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
-Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
----
- MAINTAINERS | 6 +
- drivers/input/touchscreen/Kconfig | 13 ++
- drivers/input/touchscreen/Makefile | 1 +
- drivers/input/touchscreen/goodix.c | 395 +++++++++++++++++++++++++++++++++++++
- 4 files changed, 415 insertions(+)
- create mode 100644 drivers/input/touchscreen/goodix.c
-
-diff --git a/MAINTAINERS b/MAINTAINERS
-index c721042e7e45..738708f8b75f 100644
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -4154,6 +4154,12 @@ L: linux-media@vger.kernel.org
- S: Maintained
- F: drivers/media/usb/go7007/
-
-+GOODIX TOUCHSCREEN
-+M: Bastien Nocera <hadess@hadess.net>
-+L: linux-input@vger.kernel.org
-+S: Maintained
-+F: drivers/input/touchscreen/goodix.c
-+
- GPIO SUBSYSTEM
- M: Linus Walleij <linus.walleij@linaro.org>
- M: Alexandre Courbot <gnurou@gmail.com>
-diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
-index e1d8003d01f8..568a0200fbc2 100644
---- a/drivers/input/touchscreen/Kconfig
-+++ b/drivers/input/touchscreen/Kconfig
-@@ -295,6 +295,19 @@ config TOUCHSCREEN_FUJITSU
- To compile this driver as a module, choose M here: the
- module will be called fujitsu-ts.
-
-+config TOUCHSCREEN_GOODIX
-+ tristate "Goodix I2C touchscreen"
-+ depends on I2C && ACPI
-+ help
-+ Say Y here if you have the Goodix touchscreen (such as one
-+ installed in Onda v975w tablets) connected to your
-+ system.
-+
-+ If unsure, say N.
-+
-+ To compile this driver as a module, choose M here: the
-+ module will be called goodix.
-+
- config TOUCHSCREEN_ILI210X
- tristate "Ilitek ILI210X based touchscreen"
- depends on I2C
-diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
-index 090e61cc9171..dab4a56ac98e 100644
---- a/drivers/input/touchscreen/Makefile
-+++ b/drivers/input/touchscreen/Makefile
-@@ -34,6 +34,7 @@ obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o
- obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o
- obj-$(CONFIG_TOUCHSCREEN_EGALAX) += egalax_ts.o
- obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o
-+obj-$(CONFIG_TOUCHSCREEN_GOODIX) += goodix.o
- obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o
- obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o
- obj-$(CONFIG_TOUCHSCREEN_INTEL_MID) += intel-mid-touch.o
-diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
-new file mode 100644
-index 000000000000..ca196689f025
---- /dev/null
-+++ b/drivers/input/touchscreen/goodix.c
-@@ -0,0 +1,395 @@
-+/*
-+ * Driver for Goodix Touchscreens
-+ *
-+ * Copyright (c) 2014 Red Hat Inc.
-+ *
-+ * This code is based on gt9xx.c authored by andrew@goodix.com:
-+ *
-+ * 2010 - 2012 Goodix Technology.
-+ */
-+
-+/*
-+ * 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.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/i2c.h>
-+#include <linux/input.h>
-+#include <linux/input/mt.h>
-+#include <linux/module.h>
-+#include <linux/delay.h>
-+#include <linux/irq.h>
-+#include <linux/interrupt.h>
-+#include <linux/slab.h>
-+#include <asm/unaligned.h>
-+
-+struct goodix_ts_data {
-+ struct i2c_client *client;
-+ struct input_dev *input_dev;
-+ int abs_x_max;
-+ int abs_y_max;
-+ unsigned int max_touch_num;
-+ unsigned int int_trigger_type;
-+};
-+
-+#define GOODIX_MAX_HEIGHT 4096
-+#define GOODIX_MAX_WIDTH 4096
-+#define GOODIX_INT_TRIGGER 1
-+#define GOODIX_CONTACT_SIZE 8
-+#define GOODIX_MAX_CONTACTS 10
-+
-+#define GOODIX_CONFIG_MAX_LENGTH 240
-+
-+/* Register defines */
-+#define GOODIX_READ_COOR_ADDR 0x814E
-+#define GOODIX_REG_CONFIG_DATA 0x8047
-+#define GOODIX_REG_VERSION 0x8140
-+
-+#define RESOLUTION_LOC 1
-+#define TRIGGER_LOC 6
-+
-+static const unsigned long goodix_irq_flags[] = {
-+ IRQ_TYPE_EDGE_RISING,
-+ IRQ_TYPE_EDGE_FALLING,
-+ IRQ_TYPE_LEVEL_LOW,
-+ IRQ_TYPE_LEVEL_HIGH,
-+};
-+
-+/**
-+ * goodix_i2c_read - read data from a register of the i2c slave device.
-+ *
-+ * @client: i2c device.
-+ * @reg: the register to read from.
-+ * @buf: raw write data buffer.
-+ * @len: length of the buffer to write
-+ */
-+static int goodix_i2c_read(struct i2c_client *client,
-+ u16 reg, u8 *buf, int len)
-+{
-+ struct i2c_msg msgs[2];
-+ u16 wbuf = cpu_to_be16(reg);
-+ int ret;
-+
-+ msgs[0].flags = 0;
-+ msgs[0].addr = client->addr;
-+ msgs[0].len = 2;
-+ msgs[0].buf = (u8 *) &wbuf;
-+
-+ msgs[1].flags = I2C_M_RD;
-+ msgs[1].addr = client->addr;
-+ msgs[1].len = len;
-+ msgs[1].buf = buf;
-+
-+ ret = i2c_transfer(client->adapter, msgs, 2);
-+ return ret < 0 ? ret : (ret != ARRAY_SIZE(msgs) ? -EIO : 0);
-+}
-+
-+static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
-+{
-+ int touch_num;
-+ int error;
-+
-+ error = goodix_i2c_read(ts->client, GOODIX_READ_COOR_ADDR, data,
-+ GOODIX_CONTACT_SIZE + 1);
-+ if (error) {
-+ dev_err(&ts->client->dev, "I2C transfer error: %d\n", error);
-+ return error;
-+ }
-+
-+ touch_num = data[0] & 0x0f;
-+ if (touch_num > GOODIX_MAX_CONTACTS)
-+ return -EPROTO;
-+
-+ if (touch_num > 1) {
-+ data += 1 + GOODIX_CONTACT_SIZE;
-+ error = goodix_i2c_read(ts->client,
-+ GOODIX_READ_COOR_ADDR +
-+ 1 + GOODIX_CONTACT_SIZE,
-+ data,
-+ GOODIX_CONTACT_SIZE * (touch_num - 1));
-+ if (error)
-+ return error;
-+ }
-+
-+ return touch_num;
-+}
-+
-+static void goodix_ts_report_touch(struct goodix_ts_data *ts, u8 *coor_data)
-+{
-+ int id = coor_data[0] & 0x0F;
-+ int input_x = get_unaligned_le16(&coor_data[1]);
-+ int input_y = get_unaligned_le16(&coor_data[3]);
-+ int input_w = get_unaligned_le16(&coor_data[5]);
-+
-+ input_mt_slot(ts->input_dev, id);
-+ input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
-+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, input_x);
-+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, input_y);
-+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
-+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
-+}
-+
-+/**
-+ * goodix_process_events - Process incoming events
-+ *
-+ * @ts: our goodix_ts_data pointer
-+ *
-+ * Called when the IRQ is triggered. Read the current device state, and push
-+ * the input events to the user space.
-+ */
-+static void goodix_process_events(struct goodix_ts_data *ts)
-+{
-+ u8 point_data[1 + GOODIX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
-+ int touch_num;
-+ int i;
-+
-+ touch_num = goodix_ts_read_input_report(ts, point_data);
-+ if (touch_num < 0)
-+ return;
-+
-+ for (i = 0; i < touch_num; i++)
-+ goodix_ts_report_touch(ts,
-+ &point_data[1 + GOODIX_CONTACT_SIZE * i]);
-+
-+ input_mt_sync_frame(ts->input_dev);
-+ input_sync(ts->input_dev);
-+}
-+
-+/**
-+ * goodix_ts_irq_handler - The IRQ handler
-+ *
-+ * @irq: interrupt number.
-+ * @dev_id: private data pointer.
-+ */
-+static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
-+{
-+ static const u8 end_cmd[] = {
-+ GOODIX_READ_COOR_ADDR >> 8,
-+ GOODIX_READ_COOR_ADDR & 0xff,
-+ 0
-+ };
-+ struct goodix_ts_data *ts = dev_id;
-+
-+ goodix_process_events(ts);
-+
-+ if (i2c_master_send(ts->client, end_cmd, sizeof(end_cmd)) < 0)
-+ dev_err(&ts->client->dev, "I2C write end_cmd error\n");
-+
-+ return IRQ_HANDLED;
-+}
-+
-+/**
-+ * goodix_read_config - Read the embedded configuration of the panel
-+ *
-+ * @ts: our goodix_ts_data pointer
-+ *
-+ * Must be called during probe
-+ */
-+static void goodix_read_config(struct goodix_ts_data *ts)
-+{
-+ u8 config[GOODIX_CONFIG_MAX_LENGTH];
-+ int error;
-+
-+ error = goodix_i2c_read(ts->client, GOODIX_REG_CONFIG_DATA,
-+ config,
-+ GOODIX_CONFIG_MAX_LENGTH);
-+ if (error) {
-+ dev_warn(&ts->client->dev,
-+ "Error reading config (%d), using defaults\n",
-+ error);
-+ ts->abs_x_max = GOODIX_MAX_WIDTH;
-+ ts->abs_y_max = GOODIX_MAX_HEIGHT;
-+ ts->int_trigger_type = GOODIX_INT_TRIGGER;
-+ return;
-+ }
-+
-+ ts->abs_x_max = get_unaligned_le16(&config[RESOLUTION_LOC]);
-+ ts->abs_y_max = get_unaligned_le16(&config[RESOLUTION_LOC + 2]);
-+ ts->int_trigger_type = (config[TRIGGER_LOC]) & 0x03;
-+ if (!ts->abs_x_max || !ts->abs_y_max) {
-+ dev_err(&ts->client->dev,
-+ "Invalid config, using defaults\n");
-+ ts->abs_x_max = GOODIX_MAX_WIDTH;
-+ ts->abs_y_max = GOODIX_MAX_HEIGHT;
-+ }
-+}
-+
-+
-+/**
-+ * goodix_read_version - Read goodix touchscreen version
-+ *
-+ * @client: the i2c client
-+ * @version: output buffer containing the version on success
-+ */
-+static int goodix_read_version(struct i2c_client *client, u16 *version)
-+{
-+ int error;
-+ u8 buf[6];
-+
-+ error = goodix_i2c_read(client, GOODIX_REG_VERSION, buf, sizeof(buf));
-+ if (error) {
-+ dev_err(&client->dev, "read version failed: %d\n", error);
-+ return error;
-+ }
-+
-+ if (version)
-+ *version = get_unaligned_le16(&buf[4]);
-+
-+ dev_info(&client->dev, "IC VERSION: %6ph\n", buf);
-+
-+ return 0;
-+}
-+
-+/**
-+ * goodix_i2c_test - I2C test function to check if the device answers.
-+ *
-+ * @client: the i2c client
-+ */
-+static int goodix_i2c_test(struct i2c_client *client)
-+{
-+ int retry = 0;
-+ int error;
-+ u8 test;
-+
-+ while (retry++ < 2) {
-+ error = goodix_i2c_read(client, GOODIX_REG_CONFIG_DATA,
-+ &test, 1);
-+ if (!error)
-+ return 0;
-+
-+ dev_err(&client->dev, "i2c test failed attempt %d: %d\n",
-+ retry, error);
-+ msleep(20);
-+ }
-+
-+ return error;
-+}
-+
-+/**
-+ * goodix_request_input_dev - Allocate, populate and register the input device
-+ *
-+ * @ts: our goodix_ts_data pointer
-+ *
-+ * Must be called during probe
-+ */
-+static int goodix_request_input_dev(struct goodix_ts_data *ts)
-+{
-+ int error;
-+
-+ ts->input_dev = devm_input_allocate_device(&ts->client->dev);
-+ if (!ts->input_dev) {
-+ dev_err(&ts->client->dev, "Failed to allocate input device.");
-+ return -ENOMEM;
-+ }
-+
-+ ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) |
-+ BIT_MASK(EV_KEY) |
-+ BIT_MASK(EV_ABS);
-+
-+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0,
-+ ts->abs_x_max, 0, 0);
-+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0,
-+ ts->abs_y_max, 0, 0);
-+ input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
-+ input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
-+
-+ input_mt_init_slots(ts->input_dev, GOODIX_MAX_CONTACTS,
-+ INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
-+
-+ ts->input_dev->name = "Goodix Capacitive TouchScreen";
-+ ts->input_dev->phys = "input/ts";
-+ ts->input_dev->id.bustype = BUS_I2C;
-+ ts->input_dev->id.vendor = 0x0416;
-+ ts->input_dev->id.product = 0x1001;
-+ ts->input_dev->id.version = 10427;
-+
-+ error = input_register_device(ts->input_dev);
-+ if (error) {
-+ dev_err(&ts->client->dev,
-+ "Failed to register input device: %d", error);
-+ return error;
-+ }
-+
-+ return 0;
-+}
-+
-+static int goodix_ts_probe(struct i2c_client *client,
-+ const struct i2c_device_id *id)
-+{
-+ struct goodix_ts_data *ts;
-+ unsigned long irq_flags;
-+ int error;
-+ u16 version_info;
-+
-+ dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr);
-+
-+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
-+ dev_err(&client->dev, "I2C check functionality failed.\n");
-+ return -ENXIO;
-+ }
-+
-+ ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
-+ if (!ts)
-+ return -ENOMEM;
-+
-+ ts->client = client;
-+ i2c_set_clientdata(client, ts);
-+
-+ error = goodix_i2c_test(client);
-+ if (error) {
-+ dev_err(&client->dev, "I2C communication failure: %d\n", error);
-+ return error;
-+ }
-+
-+ error = goodix_read_version(client, &version_info);
-+ if (error) {
-+ dev_err(&client->dev, "Read version failed.\n");
-+ return error;
-+ }
-+
-+ goodix_read_config(ts);
-+
-+ error = goodix_request_input_dev(ts);
-+ if (error)
-+ return error;
-+
-+ irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT;
-+ error = devm_request_threaded_irq(&ts->client->dev, client->irq,
-+ NULL, goodix_ts_irq_handler,
-+ irq_flags, client->name, ts);
-+ if (error) {
-+ dev_err(&client->dev, "request IRQ failed: %d\n", error);
-+ return error;
-+ }
-+
-+ return 0;
-+}
-+
-+static const struct i2c_device_id goodix_ts_id[] = {
-+ { "GDIX1001:00", 0 },
-+ { }
-+};
-+
-+static const struct acpi_device_id goodix_acpi_match[] = {
-+ { "GDIX1001", 0 },
-+ { }
-+};
-+MODULE_DEVICE_TABLE(acpi, goodix_acpi_match);
-+
-+static struct i2c_driver goodix_ts_driver = {
-+ .probe = goodix_ts_probe,
-+ .id_table = goodix_ts_id,
-+ .driver = {
-+ .name = "Goodix-TS",
-+ .owner = THIS_MODULE,
-+ .acpi_match_table = goodix_acpi_match,
-+ },
-+};
-+module_i2c_driver(goodix_ts_driver);
-+
-+MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
-+MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>");
-+MODULE_DESCRIPTION("Goodix touchscreen driver");
-+MODULE_LICENSE("GPL v2");
---
-2.1.0
-
generated by cgit (git 2.34.1) at 2024-11-12 20:50:34 +0000