From cde9070d9970eef1f7ec2360586c802a16230ad8 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:50 +0000
Subject: [PATCH] rtl88x2CE_WiFi_linux driver
---
kernel/drivers/media/pci/saa7164/saa7164-core.c | 215 ++++++++++++++++++++++++++++++-----------------------
1 files changed, 123 insertions(+), 92 deletions(-)
diff --git a/kernel/drivers/media/pci/saa7164/saa7164-core.c b/kernel/drivers/media/pci/saa7164/saa7164-core.c
index 5102519..3cadfbe 100644
--- a/kernel/drivers/media/pci/saa7164/saa7164-core.c
+++ b/kernel/drivers/media/pci/saa7164/saa7164-core.c
@@ -1,18 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for the NXP SAA7164 PCIe bridge
*
* Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.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.
*/
#include <linux/init.h>
@@ -23,12 +13,10 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
+#include <linux/debugfs.h>
#include <linux/delay.h>
#include <asm/div64.h>
-#ifdef CONFIG_PROC_FS
-#include <linux/proc_fs.h>
-#endif
#include "saa7164.h"
MODULE_DESCRIPTION("Driver for NXP SAA7164 based TV cards");
@@ -157,7 +145,7 @@
}
- /* Only report errors if we've been through this function atleast
+ /* Only report errors if we've been through this function at least
* once already and the cached cc values are primed. First time through
* always generates errors.
*/
@@ -179,7 +167,7 @@
int i;
memset(hg, 0, sizeof(struct saa7164_histogram));
- strcpy(hg->name, name);
+ strscpy(hg->name, name, sizeof(hg->name));
/* First 30ms x 1ms */
for (i = 0; i < 30; i++)
@@ -587,8 +575,8 @@
/* Find the current write point from the hardware */
wp = saa7164_readl(port->bufcounter);
- if (wp > (port->hwcfg.buffercount - 1))
- BUG();
+
+ BUG_ON(wp > (port->hwcfg.buffercount - 1));
/* Find the previous buffer to the current write point */
if (wp == 0)
@@ -600,8 +588,8 @@
/* TODO: turn this into a worker thread */
list_for_each_safe(c, n, &port->dmaqueue.list) {
buf = list_entry(c, struct saa7164_buffer, list);
- if (i++ > port->hwcfg.buffercount)
- BUG();
+ BUG_ON(i > port->hwcfg.buffercount);
+ i++;
if (buf->idx == rp) {
/* Found the buffer, deal with it */
@@ -906,8 +894,7 @@
{
struct saa7164_port *port = NULL;
- if ((portnr < 0) || (portnr >= SAA7164_MAX_PORTS))
- BUG();
+ BUG_ON((portnr < 0) || (portnr >= SAA7164_MAX_PORTS));
port = &dev->ports[portnr];
@@ -1020,7 +1007,7 @@
dev->bmmio = (u8 __iomem *)dev->lmmio;
dev->bmmio2 = (u8 __iomem *)dev->lmmio2;
- /* Inerrupt and ack register locations offset of bmmio */
+ /* Interrupt and ack register locations offset of bmmio */
dev->int_status = 0x183000 + 0xf80;
dev->int_ack = 0x183000 + 0xf90;
@@ -1055,92 +1042,138 @@
return;
}
-#ifdef CONFIG_PROC_FS
-static int saa7164_proc_show(struct seq_file *m, void *v)
+#ifdef CONFIG_DEBUG_FS
+static void *saa7164_seq_start(struct seq_file *s, loff_t *pos)
{
struct saa7164_dev *dev;
+ loff_t index = *pos;
+
+ mutex_lock(&devlist);
+ list_for_each_entry(dev, &saa7164_devlist, devlist) {
+ if (index-- == 0) {
+ mutex_unlock(&devlist);
+ return dev;
+ }
+ }
+ mutex_unlock(&devlist);
+
+ return NULL;
+}
+
+static void *saa7164_seq_next(struct seq_file *s, void *v, loff_t *pos)
+{
+ struct saa7164_dev *dev = v;
+ void *ret;
+
+ mutex_lock(&devlist);
+ if (list_is_last(&dev->devlist, &saa7164_devlist))
+ ret = NULL;
+ else
+ ret = list_next_entry(dev, devlist);
+ mutex_unlock(&devlist);
+
+ ++*pos;
+
+ return ret;
+}
+
+static void saa7164_seq_stop(struct seq_file *s, void *v)
+{
+}
+
+static int saa7164_seq_show(struct seq_file *m, void *v)
+{
+ struct saa7164_dev *dev = v;
struct tmComResBusInfo *b;
- struct list_head *list;
int i, c;
- if (saa7164_devcount == 0)
- return 0;
+ seq_printf(m, "%s = %p\n", dev->name, dev);
- list_for_each(list, &saa7164_devlist) {
- dev = list_entry(list, struct saa7164_dev, devlist);
- seq_printf(m, "%s = %p\n", dev->name, dev);
+ /* Lock the bus from any other access */
+ b = &dev->bus;
+ mutex_lock(&b->lock);
- /* Lock the bus from any other access */
- b = &dev->bus;
- mutex_lock(&b->lock);
+ seq_printf(m, " .m_pdwSetWritePos = 0x%x (0x%08x)\n",
+ b->m_dwSetReadPos, saa7164_readl(b->m_dwSetReadPos));
- seq_printf(m, " .m_pdwSetWritePos = 0x%x (0x%08x)\n",
- b->m_dwSetReadPos, saa7164_readl(b->m_dwSetReadPos));
+ seq_printf(m, " .m_pdwSetReadPos = 0x%x (0x%08x)\n",
+ b->m_dwSetWritePos, saa7164_readl(b->m_dwSetWritePos));
- seq_printf(m, " .m_pdwSetReadPos = 0x%x (0x%08x)\n",
- b->m_dwSetWritePos, saa7164_readl(b->m_dwSetWritePos));
+ seq_printf(m, " .m_pdwGetWritePos = 0x%x (0x%08x)\n",
+ b->m_dwGetReadPos, saa7164_readl(b->m_dwGetReadPos));
- seq_printf(m, " .m_pdwGetWritePos = 0x%x (0x%08x)\n",
- b->m_dwGetReadPos, saa7164_readl(b->m_dwGetReadPos));
+ seq_printf(m, " .m_pdwGetReadPos = 0x%x (0x%08x)\n",
+ b->m_dwGetWritePos, saa7164_readl(b->m_dwGetWritePos));
+ c = 0;
+ seq_puts(m, "\n Set Ring:\n");
+ seq_puts(m, "\n addr 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
+ for (i = 0; i < b->m_dwSizeSetRing; i++) {
+ if (c == 0)
+ seq_printf(m, " %04x:", i);
- seq_printf(m, " .m_pdwGetReadPos = 0x%x (0x%08x)\n",
- b->m_dwGetWritePos, saa7164_readl(b->m_dwGetWritePos));
- c = 0;
- seq_printf(m, "\n Set Ring:\n");
- seq_printf(m, "\n addr 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
- for (i = 0; i < b->m_dwSizeSetRing; i++) {
- if (c == 0)
- seq_printf(m, " %04x:", i);
+ seq_printf(m, " %02x", readb(b->m_pdwSetRing + i));
- seq_printf(m, " %02x", readb(b->m_pdwSetRing + i));
-
- if (++c == 16) {
- seq_printf(m, "\n");
- c = 0;
- }
+ if (++c == 16) {
+ seq_puts(m, "\n");
+ c = 0;
}
-
- c = 0;
- seq_printf(m, "\n Get Ring:\n");
- seq_printf(m, "\n addr 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
- for (i = 0; i < b->m_dwSizeGetRing; i++) {
- if (c == 0)
- seq_printf(m, " %04x:", i);
-
- seq_printf(m, " %02x", readb(b->m_pdwGetRing + i));
-
- if (++c == 16) {
- seq_printf(m, "\n");
- c = 0;
- }
- }
-
- mutex_unlock(&b->lock);
-
}
- return 0;
-}
+ c = 0;
+ seq_puts(m, "\n Get Ring:\n");
+ seq_puts(m, "\n addr 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
+ for (i = 0; i < b->m_dwSizeGetRing; i++) {
+ if (c == 0)
+ seq_printf(m, " %04x:", i);
-static struct proc_dir_entry *saa7164_pe;
+ seq_printf(m, " %02x", readb(b->m_pdwGetRing + i));
-static int saa7164_proc_create(void)
-{
- saa7164_pe = proc_create_single("saa7164", 0444, NULL, saa7164_proc_show);
- if (!saa7164_pe)
- return -ENOMEM;
+ if (++c == 16) {
+ seq_puts(m, "\n");
+ c = 0;
+ }
+ }
+
+ mutex_unlock(&b->lock);
return 0;
}
-static void saa7164_proc_destroy(void)
+static const struct seq_operations saa7164_seq_ops = {
+ .start = saa7164_seq_start,
+ .next = saa7164_seq_next,
+ .stop = saa7164_seq_stop,
+ .show = saa7164_seq_show,
+};
+
+static int saa7164_open(struct inode *inode, struct file *file)
{
- if (saa7164_pe)
- remove_proc_entry("saa7164", NULL);
+ return seq_open(file, &saa7164_seq_ops);
+}
+
+static const struct file_operations saa7164_operations = {
+ .owner = THIS_MODULE,
+ .open = saa7164_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static struct dentry *saa7614_dentry;
+
+static void __init saa7164_debugfs_create(void)
+{
+ saa7614_dentry = debugfs_create_file("saa7164", 0444, NULL, NULL,
+ &saa7164_operations);
+}
+
+static void __exit saa7164_debugfs_remove(void)
+{
+ debugfs_remove(saa7614_dentry);
}
#else
-static int saa7164_proc_create(void) { return 0; }
-static void saa7164_proc_destroy(void) {}
+static void saa7164_debugfs_create(void) { }
+static void saa7164_debugfs_remove(void) { }
#endif
static int saa7164_thread_function(void *data)
@@ -1237,7 +1270,7 @@
if (saa7164_dev_setup(dev) < 0) {
err = -EINVAL;
- goto fail_free;
+ goto fail_dev;
}
/* print pci info */
@@ -1405,6 +1438,8 @@
fail_irq:
saa7164_dev_unregister(dev);
+fail_dev:
+ pci_disable_device(pci_dev);
fail_free:
v4l2_device_unregister(&dev->v4l2_dev);
kfree(dev);
@@ -1505,9 +1540,6 @@
.id_table = saa7164_pci_tbl,
.probe = saa7164_initdev,
.remove = saa7164_finidev,
- /* TODO */
- .suspend = NULL,
- .resume = NULL,
};
static int __init saa7164_init(void)
@@ -1517,7 +1549,7 @@
if (ret)
return ret;
- saa7164_proc_create();
+ saa7164_debugfs_create();
pr_info("saa7164 driver loaded\n");
@@ -1526,10 +1558,9 @@
static void __exit saa7164_fini(void)
{
- saa7164_proc_destroy();
+ saa7164_debugfs_remove();
pci_unregister_driver(&saa7164_pci_driver);
}
module_init(saa7164_init);
module_exit(saa7164_fini);
-
--
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