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/rtc/rtc-rs5c372.c | 81 ++++++++++++++++++++++++++++++++--------
1 files changed, 64 insertions(+), 17 deletions(-)
diff --git a/kernel/drivers/rtc/rtc-rs5c372.c b/kernel/drivers/rtc/rtc-rs5c372.c
index c503832..3bd6eaa 100644
--- a/kernel/drivers/rtc/rtc-rs5c372.c
+++ b/kernel/drivers/rtc/rtc-rs5c372.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* An I2C driver for Ricoh RS5C372, R2025S/D and RV5C38[67] RTCs
*
* Copyright (C) 2005 Pavel Mironchik <pmironchik@optifacio.net>
* Copyright (C) 2006 Tower Technologies
* Copyright (C) 2008 Paul Mundt
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/i2c.h>
@@ -52,8 +49,10 @@
# define RS5C_CTRL1_CT4 (4 << 0) /* 1 Hz level irq */
#define RS5C_REG_CTRL2 15
# define RS5C372_CTRL2_24 (1 << 5)
-# define R2025_CTRL2_XST (1 << 5)
-# define RS5C_CTRL2_XSTP (1 << 4) /* only if !R2025S/D */
+# define RS5C_CTRL2_XSTP (1 << 4) /* only if !R2x2x */
+# define R2x2x_CTRL2_VDET (1 << 6) /* only if R2x2x */
+# define R2x2x_CTRL2_XSTP (1 << 5) /* only if R2x2x */
+# define R2x2x_CTRL2_PON (1 << 4) /* only if R2x2x */
# define RS5C_CTRL2_CTFG (1 << 2)
# define RS5C_CTRL2_AAFG (1 << 1) /* or WAFG */
# define RS5C_CTRL2_BAFG (1 << 0) /* or DAFG */
@@ -212,9 +211,26 @@
struct i2c_client *client = to_i2c_client(dev);
struct rs5c372 *rs5c = i2c_get_clientdata(client);
int status = rs5c_get_regs(rs5c);
+ unsigned char ctrl2 = rs5c->regs[RS5C_REG_CTRL2];
if (status < 0)
return status;
+
+ switch (rs5c->type) {
+ case rtc_r2025sd:
+ case rtc_r2221tl:
+ if ((rs5c->type == rtc_r2025sd && !(ctrl2 & R2x2x_CTRL2_XSTP)) ||
+ (rs5c->type == rtc_r2221tl && (ctrl2 & R2x2x_CTRL2_XSTP))) {
+ dev_warn(&client->dev, "rtc oscillator interruption detected. Please reset the rtc clock.\n");
+ return -EINVAL;
+ }
+ break;
+ default:
+ if (ctrl2 & RS5C_CTRL2_XSTP) {
+ dev_warn(&client->dev, "rtc oscillator interruption detected. Please reset the rtc clock.\n");
+ return -EINVAL;
+ }
+ }
tm->tm_sec = bcd2bin(rs5c->regs[RS5C372_REG_SECS] & 0x7f);
tm->tm_min = bcd2bin(rs5c->regs[RS5C372_REG_MINS] & 0x7f);
@@ -243,6 +259,7 @@
struct i2c_client *client = to_i2c_client(dev);
struct rs5c372 *rs5c = i2c_get_clientdata(client);
unsigned char buf[7];
+ unsigned char ctrl2;
int addr;
dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d "
@@ -261,7 +278,32 @@
buf[6] = bin2bcd(tm->tm_year - 100);
if (i2c_smbus_write_i2c_block_data(client, addr, sizeof(buf), buf) < 0) {
- dev_err(&client->dev, "%s: write error\n", __func__);
+ dev_dbg(&client->dev, "%s: write error in line %i\n",
+ __func__, __LINE__);
+ return -EIO;
+ }
+
+ addr = RS5C_ADDR(RS5C_REG_CTRL2);
+ ctrl2 = i2c_smbus_read_byte_data(client, addr);
+
+ /* clear rtc warning bits */
+ switch (rs5c->type) {
+ case rtc_r2025sd:
+ case rtc_r2221tl:
+ ctrl2 &= ~(R2x2x_CTRL2_VDET | R2x2x_CTRL2_PON);
+ if (rs5c->type == rtc_r2025sd)
+ ctrl2 |= R2x2x_CTRL2_XSTP;
+ else
+ ctrl2 &= ~R2x2x_CTRL2_XSTP;
+ break;
+ default:
+ ctrl2 &= ~RS5C_CTRL2_XSTP;
+ break;
+ }
+
+ if (i2c_smbus_write_byte_data(client, addr, ctrl2) < 0) {
+ dev_dbg(&client->dev, "%s: write error in line %i\n",
+ __func__, __LINE__);
return -EIO;
}
@@ -519,20 +561,25 @@
unsigned char buf[2];
int addr, i, ret = 0;
- if (rs5c372->type == rtc_r2025sd) {
- if (rs5c372->regs[RS5C_REG_CTRL2] & R2025_CTRL2_XST)
- return ret;
- rs5c372->regs[RS5C_REG_CTRL2] |= R2025_CTRL2_XST;
- } else {
- if (!(rs5c372->regs[RS5C_REG_CTRL2] & RS5C_CTRL2_XSTP))
- return ret;
- rs5c372->regs[RS5C_REG_CTRL2] &= ~RS5C_CTRL2_XSTP;
- }
-
addr = RS5C_ADDR(RS5C_REG_CTRL1);
buf[0] = rs5c372->regs[RS5C_REG_CTRL1];
buf[1] = rs5c372->regs[RS5C_REG_CTRL2];
+ switch (rs5c372->type) {
+ case rtc_r2025sd:
+ if (buf[1] & R2x2x_CTRL2_XSTP)
+ return ret;
+ break;
+ case rtc_r2221tl:
+ if (!(buf[1] & R2x2x_CTRL2_XSTP))
+ return ret;
+ break;
+ default:
+ if (!(buf[1] & RS5C_CTRL2_XSTP))
+ return ret;
+ break;
+ }
+
/* use 24hr mode */
switch (rs5c372->type) {
case rtc_rs5c372a:
--
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