staging: Add rtl8723bs sdio wifi driver

The rtl8723bs is found on quite a few systems used by Linux users,
such as on Atom systems (Intel Computestick and various other
Atom based devices) and on many (budget) ARM boards such as
the CHIP.

The plan moving forward with this is for the new clean,
written from scratch, rtl8xxxu driver to eventually gain
support for sdio devices. But there is no clear timeline
for that, so lets add this driver included in staging for now.

Cc: Bastien Nocera <hadess@hadess.net>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Jes Sorensen <jes.sorensen@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/Kconfig

@@ -34,6 +34,8 @@ source "drivers/staging/rtl8192u/Kconfig"
 
 source "drivers/staging/rtl8192e/Kconfig"
 
+source "drivers/staging/rtl8723bs/Kconfig"
+
 source "drivers/staging/rtl8712/Kconfig"
 
 source "drivers/staging/rtl8188eu/Kconfig"

drivers/staging/Makefile

@@ -6,6 +6,7 @@ obj-$(CONFIG_COMEDI)		+= comedi/
 obj-$(CONFIG_FB_OLPC_DCON)	+= olpc_dcon/
 obj-$(CONFIG_RTL8192U)		+= rtl8192u/
 obj-$(CONFIG_RTL8192E)		+= rtl8192e/
+obj-$(CONFIG_RTL8723BS)		+= rtl8723bs/
 obj-$(CONFIG_R8712U)		+= rtl8712/
 obj-$(CONFIG_R8188EU)		+= rtl8188eu/
 obj-$(CONFIG_RTS5208)		+= rts5208/

drivers/staging/rtl8723bs/Kconfig

@@ -0,0 +1,10 @@
+config RTL8723BS
+	tristate "Realtek RTL8723BS SDIO Wireless LAN NIC driver"
+	depends on WLAN && MMC && CFG80211
+	select WIRELESS_EXT
+	select WEXT_PRIV
+	---help---
+	This option enables support for RTL8723BS SDIO drivers, such as
+	the wifi found on the 1st gen Intel Compute Stick, the CHIP
+	and many other Intel Atom and ARM based devices.
+	If built as a module, it will be called r8723bs.

drivers/staging/rtl8723bs/Makefile

@@ -0,0 +1,70 @@
+r8723bs-y = \
+		core/rtw_ap.o \
+		core/rtw_btcoex.o \
+	 	core/rtw_cmd.o \
+		core/rtw_debug.o \
+		core/rtw_efuse.o \
+		core/rtw_io.o \
+		core/rtw_ioctl_set.o \
+		core/rtw_ieee80211.o \
+		core/rtw_mlme.o \
+		core/rtw_mlme_ext.o \
+		core/rtw_odm.o \
+		core/rtw_pwrctrl.o \
+		core/rtw_recv.o \
+		core/rtw_rf.o \
+		core/rtw_security.o \
+		core/rtw_sta_mgt.o \
+		core/rtw_wlan_util.o \
+		core/rtw_xmit.o	\
+		hal/hal_intf.o \
+		hal/hal_com.o \
+		hal/hal_com_phycfg.o \
+		hal/hal_btcoex.o \
+		hal/hal_sdio.o \
+		hal/Hal8723BPwrSeq.o \
+		hal/HalPhyRf.o \
+		hal/HalPwrSeqCmd.o \
+		hal/odm.o \
+		hal/odm_CfoTracking.o \
+		hal/odm_debug.o \
+		hal/odm_DIG.o \
+		hal/odm_DynamicBBPowerSaving.o \
+		hal/odm_DynamicTxPower.o \
+		hal/odm_EdcaTurboCheck.o \
+		hal/odm_HWConfig.o \
+		hal/odm_NoiseMonitor.o \
+		hal/odm_PathDiv.o \
+		hal/odm_RegConfig8723B.o \
+		hal/odm_RTL8723B.o \
+		hal/rtl8723b_cmd.o \
+		hal/rtl8723b_dm.o \
+		hal/rtl8723b_hal_init.o \
+		hal/rtl8723b_phycfg.o \
+		hal/rtl8723b_rf6052.o \
+		hal/rtl8723b_rxdesc.o \
+		hal/rtl8723bs_recv.o \
+		hal/rtl8723bs_xmit.o \
+		hal/sdio_halinit.o \
+		hal/sdio_ops.o \
+		hal/HalBtc8723b1Ant.o \
+		hal/HalBtc8723b2Ant.o \
+		hal/HalHWImg8723B_BB.o \
+		hal/HalHWImg8723B_MAC.o \
+		hal/HalHWImg8723B_RF.o \
+		hal/HalPhyRf_8723B.o \
+		os_dep/ioctl_cfg80211.o \
+		os_dep/ioctl_linux.o \
+		os_dep/mlme_linux.o \
+		os_dep/osdep_service.o \
+		os_dep/os_intfs.o \
+		os_dep/recv_linux.o \
+		os_dep/rtw_proc.o \
+		os_dep/sdio_intf.o \
+		os_dep/sdio_ops_linux.o \
+		os_dep/wifi_regd.o \
+		os_dep/xmit_linux.o
+
+obj-$(CONFIG_RTL8723BS) := r8723bs.o
+
+ccflags-y += -I$(srctree)/$(src)/include -I$(srctree)/$(src)/hal

drivers/staging/rtl8723bs/TODO

@@ -0,0 +1,16 @@
+TODO:
+- find and remove code blocks guarded by never set CONFIG_FOO defines
+- find and remove remaining code valid only for 5 HGz. Most of the obvious
+  ones have been removed, but things like channel > 14 still exist.
+- find and remove any code for other chips that is left over
+- convert any remaining unusual variable types
+- find codes that can use %pM and %Nph formatting
+- checkpatch.pl fixes - most of the remaining ones are lines too long. Many
+  of them will require refactoring
+- merge Realtek's bugfixes and new features into the driver
+- switch to use LIB80211
+- switch to use MAC80211
+
+Please send any patches to Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
+Bastien Nocera <hadess@hadess.net>, Hans de Goede <hdegoede@redhat.com>
+and Larry Finger <Larry.Finger@lwfinger.net>.