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Message-ID: <4cb1a6aa-24f3-4dd0-8003-f7a3d3baa76c@gmail.com>
Date: Sun, 17 Mar 2024 20:53:48 +0200
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Subject: [PATCH v2 09/12] wifi: rtlwifi: Add rtl8192du/fw.{c,h} and
 rtl8192du/led.{c,h}
Content-Language: en-US
From: Bitterblue Smith <rtl8821cerfe2@gmail.com>
To: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Cc: Ping-Ke Shih <pkshih@realtek.com>,
 Larry Finger <Larry.Finger@lwfinger.net>,
 Stefan Lippers-Hollmann <s.l-h@gmx.de>,
 Christian Hewitt <chewitt@libreelec.tv>
References: <5c23149c-1487-438d-bb37-69e2dd8173dc@gmail.com>
In-Reply-To: <5c23149c-1487-438d-bb37-69e2dd8173dc@gmail.com>
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fw.c contains a function for loading the firmware.
led.c contains a function for controlling the LED.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
---
Patch is new in v2, split from patch 3/3 in v1.
---
 .../wireless/realtek/rtlwifi/rtl8192du/fw.c   | 109 ++++++++++++++++++
 .../wireless/realtek/rtlwifi/rtl8192du/fw.h   |   9 ++
 .../wireless/realtek/rtlwifi/rtl8192du/led.c  |  10 ++
 .../wireless/realtek/rtlwifi/rtl8192du/led.h  |   9 ++
 4 files changed, 137 insertions(+)
 create mode 100644 drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.c
 create mode 100644 drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.h
 create mode 100644 drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.c
 create mode 100644 drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.h

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.c
new file mode 100644
index 000000000000..1521460f4f37
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2009-2012  Realtek Corporation.*/
+
+#include "../wifi.h"
+#include "../pci.h"
+#include "../base.h"
+#include "../efuse.h"
+#include "../rtl8192d/reg.h"
+#include "../rtl8192d/def.h"
+#include "../rtl8192d/fw_common.h"
+#include "fw.h"
+#include "sw.h"
+
+int rtl92d_download_fw(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
+	enum version_8192d version = rtlhal->version;
+	bool fwdl_in_process = false;
+	bool fw_downloaded = false;
+	u32 fwsize, count;
+	u8 *pfwheader;
+	u8 *pfwdata;
+	u8 value;
+	int err;
+
+	if (rtlpriv->max_fw_size == 0 || !rtlhal->pfirmware)
+		return 1;
+
+	fwsize = rtlhal->fwsize;
+	pfwheader = rtlhal->pfirmware;
+	pfwdata = rtlhal->pfirmware;
+	rtlhal->fw_version = (u16)GET_FIRMWARE_HDR_VERSION(pfwheader);
+	rtlhal->fw_subversion = (u16)GET_FIRMWARE_HDR_SUB_VER(pfwheader);
+	rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
+		"FirmwareVersion(%d), FirmwareSubVersion(%d), Signature(%#x)\n",
+		rtlhal->fw_version, rtlhal->fw_subversion,
+		GET_FIRMWARE_HDR_SIGNATURE(pfwheader));
+	if (IS_FW_HEADER_EXIST(pfwheader)) {
+		rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
+			"Shift 32 bytes for FW header!!\n");
+		pfwdata = pfwdata + 32;
+		fwsize = fwsize - 32;
+	}
+
+	mutex_lock(&globalmutex_for_fwdownload);
+	fw_downloaded = rtl92d_is_fw_downloaded(rtlpriv);
+	if ((rtl_read_byte(rtlpriv, 0x1f) & BIT(5)) == BIT(5))
+		fwdl_in_process = true;
+	else
+		fwdl_in_process = false;
+	if (fw_downloaded) {
+		mutex_unlock(&globalmutex_for_fwdownload);
+		goto exit;
+	} else if (fwdl_in_process) {
+		mutex_unlock(&globalmutex_for_fwdownload);
+		for (count = 0; count < 5000; count++) {
+			udelay(500);
+			mutex_lock(&globalmutex_for_fwdownload);
+			fw_downloaded = rtl92d_is_fw_downloaded(rtlpriv);
+			if ((rtl_read_byte(rtlpriv, 0x1f) & BIT(5)) == BIT(5))
+				fwdl_in_process = true;
+			else
+				fwdl_in_process = false;
+			mutex_unlock(&globalmutex_for_fwdownload);
+			if (fw_downloaded)
+				goto exit;
+			else if (!fwdl_in_process)
+				break;
+
+			rtl_dbg(rtlpriv, COMP_FW, DBG_DMESG,
+				"Wait for another mac download fw\n");
+		}
+		mutex_lock(&globalmutex_for_fwdownload);
+		value = rtl_read_byte(rtlpriv, 0x1f);
+		value |= BIT(5);
+		rtl_write_byte(rtlpriv, 0x1f, value);
+		mutex_unlock(&globalmutex_for_fwdownload);
+	} else {
+		value = rtl_read_byte(rtlpriv, 0x1f);
+		value |= BIT(5);
+		rtl_write_byte(rtlpriv, 0x1f, value);
+		mutex_unlock(&globalmutex_for_fwdownload);
+	}
+
+	/* If 8051 is running in RAM code, driver should
+	 * inform Fw to reset by itself, or it will cause
+	 * download Fw fail.
+	 */
+	if (rtl_read_byte(rtlpriv, REG_MCUFWDL) & BIT(7)) {
+		rtl92d_firmware_selfreset(hw);
+		rtl_write_byte(rtlpriv, REG_MCUFWDL, 0x00);
+	}
+	rtl92d_enable_fw_download(hw, true);
+	rtl92d_write_fw(hw, version, pfwdata, fwsize);
+	rtl92d_enable_fw_download(hw, false);
+	mutex_lock(&globalmutex_for_fwdownload);
+	err = rtl92d_fw_free_to_go(hw);
+	/* download fw over,clear 0x1f[5] */
+	value = rtl_read_byte(rtlpriv, 0x1f);
+	value &= (~BIT(5));
+	rtl_write_byte(rtlpriv, 0x1f, value);
+	mutex_unlock(&globalmutex_for_fwdownload);
+	if (err)
+		pr_err("fw is not ready to run!\n");
+exit:
+	err = rtl92d_fw_init(hw);
+	return err;
+}
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.h b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.h
new file mode 100644
index 000000000000..857431fe8952
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/fw.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2009-2012  Realtek Corporation.*/
+
+#ifndef __RTL92D__FW__H__
+#define __RTL92D__FW__H__
+
+int rtl92d_download_fw(struct ieee80211_hw *hw);
+
+#endif
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.c
new file mode 100644
index 000000000000..a2761f25e94e
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2009-2012  Realtek Corporation.*/
+
+#include "../wifi.h"
+#include "led.h"
+
+void rtl92de_led_control(struct ieee80211_hw *hw, enum led_ctl_mode ledaction)
+{
+	/* The hardware has control. */
+}
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.h b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.h
new file mode 100644
index 000000000000..b7f7a74d5261
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/led.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2009-2012  Realtek Corporation.*/
+
+#ifndef __RTL92CE_LED_H__
+#define __RTL92CE_LED_H__
+
+void rtl92de_led_control(struct ieee80211_hw *hw, enum led_ctl_mode ledaction);
+
+#endif
-- 
2.43.2