From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/drivers/input/touchscreen/pixcir_i2c_ts.c | 187 +++++++++++++++++++++++-----------------------
1 files changed, 95 insertions(+), 92 deletions(-)
diff --git a/kernel/drivers/input/touchscreen/pixcir_i2c_ts.c b/kernel/drivers/input/touchscreen/pixcir_i2c_ts.c
index 37ff672..9aa0985 100644
--- a/kernel/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/kernel/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -1,33 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for Pixcir I2C touchscreen controllers.
*
* Copyright (C) 2010-2011 Pixcir, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
*/
+#include <asm/unaligned.h>
#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
-#include <linux/gpio.h>
-#include <linux/gpio/consumer.h>
+#include <linux/interrupt.h>
#include <linux/of_device.h>
-#include <linux/platform_data/pixcir_i2c_ts.h>
-#include <asm/unaligned.h>
+#include <linux/module.h>
+#include <linux/slab.h>
#define PIXCIR_MAX_SLOTS 5 /* Max fingers supported by driver */
+
+/*
+ * Register map
+ */
+#define PIXCIR_REG_POWER_MODE 51
+#define PIXCIR_REG_INT_MODE 52
+
+/*
+ * Power modes:
+ * active: max scan speed
+ * idle: lower scan speed with automatic transition to active on touch
+ * halt: datasheet says sleep but this is more like halt as the chip
+ * clocks are cut and it can only be brought out of this mode
+ * using the RESET pin.
+ */
+enum pixcir_power_mode {
+ PIXCIR_POWER_ACTIVE,
+ PIXCIR_POWER_IDLE,
+ PIXCIR_POWER_HALT,
+};
+
+#define PIXCIR_POWER_MODE_MASK 0x03
+#define PIXCIR_POWER_ALLOW_IDLE (1UL << 2)
+
+/*
+ * Interrupt modes:
+ * periodical: interrupt is asserted periodicaly
+ * diff coordinates: interrupt is asserted when coordinates change
+ * level on touch: interrupt level asserted during touch
+ * pulse on touch: interrupt pulse asserted during touch
+ *
+ */
+enum pixcir_int_mode {
+ PIXCIR_INT_PERIODICAL,
+ PIXCIR_INT_DIFF_COORD,
+ PIXCIR_INT_LEVEL_TOUCH,
+ PIXCIR_INT_PULSE_TOUCH,
+};
+
+#define PIXCIR_INT_MODE_MASK 0x03
+#define PIXCIR_INT_ENABLE (1UL << 3)
+#define PIXCIR_INT_POL_HIGH (1UL << 2)
+
+/**
+ * struct pixcir_i2c_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_i2c_ts_data {
struct i2c_client *client;
@@ -38,7 +81,6 @@
struct gpio_desc *gpio_wake;
const struct pixcir_i2c_chip_data *chip;
struct touchscreen_properties prop;
- int max_fingers; /* Max fingers supported in this instance */
bool running;
};
@@ -62,7 +104,7 @@
memset(report, 0, sizeof(struct pixcir_report_data));
i = chip->has_hw_ids ? 1 : 0;
- readsize = 2 + tsdata->max_fingers * (4 + i);
+ readsize = 2 + tsdata->chip->max_fingers * (4 + i);
if (readsize > sizeof(rdbuf))
readsize = sizeof(rdbuf);
@@ -83,8 +125,8 @@
}
touch = rdbuf[0] & 0x7;
- if (touch > tsdata->max_fingers)
- touch = tsdata->max_fingers;
+ if (touch > tsdata->chip->max_fingers)
+ touch = tsdata->chip->max_fingers;
report->num_touches = touch;
bufptr = &rdbuf[2];
@@ -200,7 +242,7 @@
ret = i2c_smbus_read_byte_data(ts->client, PIXCIR_REG_POWER_MODE);
if (ret < 0) {
- dev_err(dev, "%s: can't read reg 0x%x : %d\n",
+ dev_err(dev, "%s: can't read reg %d : %d\n",
__func__, PIXCIR_REG_POWER_MODE, ret);
return ret;
}
@@ -213,7 +255,7 @@
ret = i2c_smbus_write_byte_data(ts->client, PIXCIR_REG_POWER_MODE, ret);
if (ret < 0) {
- dev_err(dev, "%s: can't write reg 0x%x : %d\n",
+ dev_err(dev, "%s: can't write reg %d : %d\n",
__func__, PIXCIR_REG_POWER_MODE, ret);
return ret;
}
@@ -239,7 +281,7 @@
ret = i2c_smbus_read_byte_data(ts->client, PIXCIR_REG_INT_MODE);
if (ret < 0) {
- dev_err(dev, "%s: can't read reg 0x%x : %d\n",
+ dev_err(dev, "%s: can't read reg %d : %d\n",
__func__, PIXCIR_REG_INT_MODE, ret);
return ret;
}
@@ -254,7 +296,7 @@
ret = i2c_smbus_write_byte_data(ts->client, PIXCIR_REG_INT_MODE, ret);
if (ret < 0) {
- dev_err(dev, "%s: can't write reg 0x%x : %d\n",
+ dev_err(dev, "%s: can't write reg %d : %d\n",
__func__, PIXCIR_REG_INT_MODE, ret);
return ret;
}
@@ -272,7 +314,7 @@
ret = i2c_smbus_read_byte_data(ts->client, PIXCIR_REG_INT_MODE);
if (ret < 0) {
- dev_err(dev, "%s: can't read reg 0x%x : %d\n",
+ dev_err(dev, "%s: can't read reg %d : %d\n",
__func__, PIXCIR_REG_INT_MODE, ret);
return ret;
}
@@ -284,7 +326,7 @@
ret = i2c_smbus_write_byte_data(ts->client, PIXCIR_REG_INT_MODE, ret);
if (ret < 0) {
- dev_err(dev, "%s: can't write reg 0x%x : %d\n",
+ dev_err(dev, "%s: can't write reg %d : %d\n",
__func__, PIXCIR_REG_INT_MODE, ret);
return ret;
}
@@ -420,31 +462,9 @@
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 int pixcir_parse_dt(struct device *dev,
- struct pixcir_i2c_ts_data *tsdata)
-{
- tsdata->chip = of_device_get_match_data(dev);
- if (!tsdata->chip)
- return -EINVAL;
-
- return 0;
-}
-#else
-static int pixcir_parse_dt(struct device *dev,
- struct pixcir_i2c_ts_data *tsdata)
-{
- return -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 pixcir_i2c_ts_data *tsdata;
struct input_dev *input;
@@ -454,19 +474,11 @@
if (!tsdata)
return -ENOMEM;
- if (pdata) {
- tsdata->chip = &pdata->chip;
- } else if (dev->of_node) {
- error = pixcir_parse_dt(dev, tsdata);
- if (error)
- return error;
- } else {
- dev_err(dev, "platform data not defined\n");
- return -EINVAL;
- }
-
- if (!tsdata->chip->max_fingers) {
- dev_err(dev, "Invalid max_fingers in chip data\n");
+ tsdata->chip = device_get_match_data(dev);
+ if (!tsdata->chip && id)
+ tsdata->chip = (const void *)id->driver_data;
+ if (!tsdata->chip) {
+ dev_err(dev, "can't locate chip data\n");
return -EINVAL;
}
@@ -483,30 +495,17 @@
input->id.bustype = BUS_I2C;
input->open = pixcir_input_open;
input->close = pixcir_input_close;
- input->dev.parent = dev;
- if (pdata) {
- 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);
- } else {
- input_set_capability(input, EV_ABS, ABS_MT_POSITION_X);
- input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y);
- touchscreen_parse_properties(input, true, &tsdata->prop);
- if (!input_abs_get_max(input, ABS_MT_POSITION_X) ||
- !input_abs_get_max(input, ABS_MT_POSITION_Y)) {
- dev_err(dev, "Touchscreen size is not specified\n");
- return -EINVAL;
- }
+ input_set_capability(input, EV_ABS, ABS_MT_POSITION_X);
+ input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y);
+ touchscreen_parse_properties(input, true, &tsdata->prop);
+ if (!input_abs_get_max(input, ABS_MT_POSITION_X) ||
+ !input_abs_get_max(input, ABS_MT_POSITION_Y)) {
+ dev_err(dev, "Touchscreen size is not specified\n");
+ return -EINVAL;
}
- tsdata->max_fingers = tsdata->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,
+ error = input_mt_init_slots(input, tsdata->chip->max_fingers,
INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
if (error) {
dev_err(dev, "Error initializing Multi-Touch slots\n");
@@ -518,7 +517,9 @@
tsdata->gpio_attb = devm_gpiod_get(dev, "attb", GPIOD_IN);
if (IS_ERR(tsdata->gpio_attb)) {
error = PTR_ERR(tsdata->gpio_attb);
- dev_err(dev, "Failed to request ATTB gpio: %d\n", error);
+ if (error != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request ATTB gpio: %d\n",
+ error);
return error;
}
@@ -526,7 +527,9 @@
GPIOD_OUT_LOW);
if (IS_ERR(tsdata->gpio_reset)) {
error = PTR_ERR(tsdata->gpio_reset);
- dev_err(dev, "Failed to request RESET gpio: %d\n", error);
+ if (error != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request RESET gpio: %d\n",
+ error);
return error;
}
@@ -582,14 +585,6 @@
return 0;
}
-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 */
@@ -600,6 +595,14 @@
.has_hw_ids = true,
};
+static const struct i2c_device_id pixcir_i2c_ts_id[] = {
+ { "pixcir_ts", (unsigned long) &pixcir_ts_data },
+ { "pixcir_tangoc", (unsigned long) &pixcir_tangoc_data },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, pixcir_i2c_ts_id);
+
+#ifdef CONFIG_OF
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 },
--
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