From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/drivers/media/radio/si470x/radio-si470x-i2c.c | 79 +++++++++++++++++++++------------------
1 files changed, 42 insertions(+), 37 deletions(-)
diff --git a/kernel/drivers/media/radio/si470x/radio-si470x-i2c.c b/kernel/drivers/media/radio/si470x/radio-si470x-i2c.c
index 7c49eae..76d39e2 100644
--- a/kernel/drivers/media/radio/si470x/radio-si470x-i2c.c
+++ b/kernel/drivers/media/radio/si470x/radio-si470x-i2c.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* drivers/media/radio/si470x/radio-si470x-i2c.c
*
@@ -5,16 +6,6 @@
*
* Copyright (c) 2009 Samsung Electronics Co.Ltd
* Author: Joonyoung Shim <jy0922.shim@samsung.com>
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
*/
@@ -28,6 +19,7 @@
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include "radio-si470x.h"
@@ -229,12 +221,8 @@
static int si470x_vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *capability)
{
- strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver));
- strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
- capability->device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_READWRITE |
- V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE;
- capability->capabilities = capability->device_caps | V4L2_CAP_DEVICE_CAPS;
-
+ strscpy(capability->driver, DRIVER_NAME, sizeof(capability->driver));
+ strscpy(capability->card, DRIVER_CARD, sizeof(capability->card));
return 0;
}
@@ -342,15 +330,14 @@
/*
* si470x_i2c_probe - probe for the device
*/
-static int si470x_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int si470x_i2c_probe(struct i2c_client *client)
{
struct si470x_device *radio;
int retval = 0;
unsigned char version_warning = 0;
/* private data allocation and initialization */
- radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL);
+ radio = devm_kzalloc(&client->dev, sizeof(*radio), GFP_KERNEL);
if (!radio) {
retval = -ENOMEM;
goto err_initial;
@@ -370,7 +357,7 @@
retval = v4l2_device_register(&client->dev, &radio->v4l2_dev);
if (retval < 0) {
dev_err(&client->dev, "couldn't register v4l2_device\n");
- goto err_radio;
+ goto err_initial;
}
v4l2_ctrl_handler_init(&radio->hdl, 2);
@@ -390,20 +377,34 @@
radio->videodev.lock = &radio->lock;
radio->videodev.v4l2_dev = &radio->v4l2_dev;
radio->videodev.release = video_device_release_empty;
+ radio->videodev.device_caps =
+ V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_READWRITE | V4L2_CAP_TUNER |
+ V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE;
video_set_drvdata(&radio->videodev, radio);
+
+ radio->gpio_reset = devm_gpiod_get_optional(&client->dev, "reset",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(radio->gpio_reset)) {
+ retval = PTR_ERR(radio->gpio_reset);
+ dev_err(&client->dev, "Failed to request gpio: %d\n", retval);
+ goto err_all;
+ }
+
+ if (radio->gpio_reset)
+ gpiod_set_value(radio->gpio_reset, 1);
/* power up : need 110ms */
radio->registers[POWERCFG] = POWERCFG_ENABLE;
if (si470x_set_register(radio, POWERCFG) < 0) {
retval = -EIO;
- goto err_ctrl;
+ goto err_all;
}
msleep(110);
/* get device and chip versions */
if (si470x_get_all_registers(radio) < 0) {
retval = -EIO;
- goto err_ctrl;
+ goto err_all;
}
dev_info(&client->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n",
radio->registers[DEVICEID], radio->registers[SI_CHIPID]);
@@ -430,10 +431,10 @@
/* rds buffer allocation */
radio->buf_size = rds_buf * 3;
- radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
+ radio->buffer = devm_kmalloc(&client->dev, radio->buf_size, GFP_KERNEL);
if (!radio->buffer) {
retval = -EIO;
- goto err_ctrl;
+ goto err_all;
}
/* rds buffer configuration */
@@ -441,12 +442,13 @@
radio->rd_index = 0;
init_waitqueue_head(&radio->read_queue);
- retval = request_threaded_irq(client->irq, NULL, si470x_i2c_interrupt,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT, DRIVER_NAME,
- radio);
+ retval = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+ si470x_i2c_interrupt,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ DRIVER_NAME, radio);
if (retval) {
dev_err(&client->dev, "Failed to register interrupt\n");
- goto err_rds;
+ goto err_all;
}
/* register video device */
@@ -460,14 +462,8 @@
return 0;
err_all:
- free_irq(client->irq, radio);
-err_rds:
- kfree(radio->buffer);
-err_ctrl:
v4l2_ctrl_handler_free(&radio->hdl);
v4l2_device_unregister(&radio->v4l2_dev);
-err_radio:
- kfree(radio);
err_initial:
return retval;
}
@@ -480,12 +476,13 @@
{
struct si470x_device *radio = i2c_get_clientdata(client);
- free_irq(client->irq, radio);
video_unregister_device(&radio->videodev);
+
+ if (radio->gpio_reset)
+ gpiod_set_value(radio->gpio_reset, 0);
v4l2_ctrl_handler_free(&radio->hdl);
v4l2_device_unregister(&radio->v4l2_dev);
- kfree(radio);
return 0;
}
@@ -528,6 +525,13 @@
static SIMPLE_DEV_PM_OPS(si470x_i2c_pm, si470x_i2c_suspend, si470x_i2c_resume);
#endif
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id si470x_of_match[] = {
+ { .compatible = "silabs,si470x" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, si470x_of_match);
+#endif
/*
* si470x_i2c_driver - i2c driver interface
@@ -535,11 +539,12 @@
static struct i2c_driver si470x_i2c_driver = {
.driver = {
.name = "si470x",
+ .of_match_table = of_match_ptr(si470x_of_match),
#ifdef CONFIG_PM_SLEEP
.pm = &si470x_i2c_pm,
#endif
},
- .probe = si470x_i2c_probe,
+ .probe_new = si470x_i2c_probe,
.remove = si470x_i2c_remove,
.id_table = si470x_i2c_id,
};
--
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