wifi: rtw88: SDIO device driver for RTL8723CS

This driver uses the new rtw8703b chip driver code.

Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For SDIO
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240311103735.615541-10-fiona.klute@gmx.de

drivers/net/wireless/realtek/rtw88/Kconfig

@@ -31,6 +31,10 @@ config RTW88_8822C
 config RTW88_8723X
 	tristate
 
+config RTW88_8703B
+	tristate
+	select RTW88_8723X
+
 config RTW88_8723D
 	tristate
 	select RTW88_8723X
@@ -126,6 +130,20 @@ config RTW88_8723DS
 
 	  802.11n SDIO wireless network adapter
 
+config RTW88_8723CS
+	tristate "Realtek 8723CS SDIO wireless network adapter"
+	depends on MMC
+	select RTW88_CORE
+	select RTW88_SDIO
+	select RTW88_8703B
+	help
+	  Select this option to enable support for 8723CS chipset (EXPERIMENTAL)
+
+	  This module adds support for the 8723CS 802.11n SDIO
+	  wireless network adapter.
+
+	  If you choose to build a module, it'll be called rtw88_8723cs.
+
 config RTW88_8723DU
 	tristate "Realtek 8723DU USB wireless network adapter"
 	depends on USB

drivers/net/wireless/realtek/rtw88/Makefile

@@ -47,6 +47,12 @@ rtw88_8822cu-objs		:= rtw8822cu.o
 obj-$(CONFIG_RTW88_8723X)	+= rtw88_8723x.o
 rtw88_8723x-objs		:= rtw8723x.o
 
+obj-$(CONFIG_RTW88_8703B)	+= rtw88_8703b.o
+rtw88_8703b-objs		:= rtw8703b.o rtw8703b_tables.o
+
+obj-$(CONFIG_RTW88_8723CS)	+= rtw88_8723cs.o
+rtw88_8723cs-objs		:= rtw8723cs.o
+
 obj-$(CONFIG_RTW88_8723D)	+= rtw88_8723d.o
 rtw88_8723d-objs		:= rtw8723d.o rtw8723d_table.o
 

drivers/net/wireless/realtek/rtw88/rtw8723cs.c

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright Fiona Klute <fiona.klute@gmx.de> */
+
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/module.h>
+#include "main.h"
+#include "rtw8703b.h"
+#include "sdio.h"
+
+static const struct sdio_device_id rtw_8723cs_id_table[] = {
+	{
+		SDIO_DEVICE(SDIO_VENDOR_ID_REALTEK,
+			    SDIO_DEVICE_ID_REALTEK_RTW8723CS),
+		.driver_data = (kernel_ulong_t)&rtw8703b_hw_spec,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(sdio, rtw_8723cs_id_table);
+
+static struct sdio_driver rtw_8723cs_driver = {
+	.name = "rtw8723cs",
+	.id_table = rtw_8723cs_id_table,
+	.probe = rtw_sdio_probe,
+	.remove = rtw_sdio_remove,
+	.drv = {
+		.pm = &rtw_sdio_pm_ops,
+		.shutdown = rtw_sdio_shutdown
+	}};
+module_sdio_driver(rtw_8723cs_driver);
+
+MODULE_AUTHOR("Fiona Klute <fiona.klute@gmx.de>");
+MODULE_DESCRIPTION("Realtek 802.11n wireless 8723cs driver");
+MODULE_LICENSE("Dual BSD/GPL");

include/linux/mmc/sdio_ids.h

@@ -124,6 +124,7 @@
 #define SDIO_DEVICE_ID_REALTEK_RTW8723DS_2ANT	0xd723
 #define SDIO_DEVICE_ID_REALTEK_RTW8723DS_1ANT	0xd724
 #define SDIO_DEVICE_ID_REALTEK_RTW8821DS	0xd821
+#define SDIO_DEVICE_ID_REALTEK_RTW8723CS	0xb703
 
 #define SDIO_VENDOR_ID_SIANO			0x039a
 #define SDIO_DEVICE_ID_SIANO_NOVA_B0		0x0201