staging: wilc1000: Add SDIO/SPI 802.11 driver

This driver is for the wilc1000 which is a single chip IEEE 802.11
b/g/n device.
The driver works together with cfg80211, which is the kernel side of
configuration management for wireless devices because the wilc1000
chipset is fullmac where the MLME is managed in hardware.

The driver worked from kernel version 2.6.38 and being now ported
to several others since then.
A TODO file is included as well in this commit.

Signed-off-by: Johnny Kim <johnny.kim@atmel.com>
Signed-off-by: Rachel Kim <rachel.kim@atmel.com>
Signed-off-by: Dean Lee <dean.lee@atmel.com>
Signed-off-by: Chris Park <chris.park@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/Kconfig

@@ -110,4 +110,6 @@ source "drivers/staging/fbtft/Kconfig"
 
 source "drivers/staging/fsl-mc/Kconfig"
 
+source "drivers/staging/wilc1000/Kconfig"
+
 endif # STAGING

drivers/staging/Makefile

@@ -47,3 +47,4 @@ obj-$(CONFIG_UNISYSSPAR)	+= unisys/
 obj-$(CONFIG_COMMON_CLK_XLNX_CLKWZRD)	+= clocking-wizard/
 obj-$(CONFIG_FB_TFT)		+= fbtft/
 obj-$(CONFIG_FSL_MC_BUS)	+= fsl-mc/
+obj-$(CONFIG_WILC1000)		+= wilc1000/

drivers/staging/wilc1000/Kconfig

@@ -0,0 +1,55 @@
+config WILC1000
+	tristate "WILC1000 support (WiFi only)"
+	---help---
+		This module only support IEEE 802.11n WiFi.
+
+choice
+        prompt "Memory Allocation"
+        depends on WILC1000
+        default WILC1000_PREALLOCATE_AT_LOADING_DRIVER
+
+        config WILC1000_PREALLOCATE_AT_LOADING_DRIVER
+                bool "Preallocate memory at loading driver"
+                ---help---
+                        This choice supports static allocation of the memory
+                        for the receive buffer. The driver will allocate the RX buffer 
+                        during initial time. The driver will also free the buffer
+                        by calling network device stop.
+
+        config WILC1000_DYNAMICALLY_ALLOCATE_MEMROY
+                bool "Dynamically allocate memory in real time"
+                ---help---
+                        This choice supports dynamic allocation of the memory
+                        for the receive buffer. The driver will allocate the RX buffer
+                        when it is required.
+endchoice
+
+
+choice
+    prompt "Bus Type"
+    depends on WILC1000 
+    default WILC1000_SDIO
+
+	config WILC1000_SDIO
+	    bool "SDIO support"
+	    depends on MMC
+		---help---
+			This module adds support for the SDIO interface of adapters using
+			WILC chipset. Select this if your platform is using the SDIO bus. 
+
+	config WILC1000_SPI
+	    bool "SPI support"
+		---help---
+			This module adds support for the SPI interface of adapters using
+			WILC chipset. Select this if your platform is using the SPI bus. 
+endchoice
+
+
+config WILC1000_HW_OOB_INTR
+    bool "Use out of band interrupt"
+    depends on WILC1000 && WILC1000_SDIO
+    default n
+    ---help---
+		If your platform don't recognize SDIO IRQ, connect chipset external IRQ pin
+		and check this option. Or, Use this to get all interrupts including SDIO interrupts.
+

drivers/staging/wilc1000/Makefile

@@ -0,0 +1,41 @@
+obj-$(CONFIG_WILC1000) += wilc1000.o
+obj-$(CONFIG_WILC1000_PREALLOCATE_DURING_SYSTEM_BOOT) += wilc_exported_buf.o
+
+
+ccflags-$(CONFIG_WILC1000_SDIO) += -DWILC_SDIO -DCOMPLEMENT_BOOT
+ccflags-$(CONFIG_WILC1000_HW_OOB_INTR) += -DWILC_SDIO_IRQ_GPIO
+ccflags-$(CONFIG_WILC1000_SPI) += -DWILC_SPI
+
+ccflags-y += -DSTA_FIRMWARE=\"atmel/wilc1000_fw.bin\" \
+		-DAP_FIRMWARE=\"atmel/wilc1000_ap_fw.bin\" \
+		-DP2P_CONCURRENCY_FIRMWARE=\"atmel/wilc1000_p2p_fw.bin\"
+
+ccflags-y += -I$(src)/ -DEXPORT_SYMTAB  -D__CHECK_ENDIAN__ -DWILC_ASIC_A0 \
+		-DPLL_WORKAROUND -DCONNECT_DIRECT  -DAGING_ALG \
+		-DWILC_PARSE_SCAN_IN_HOST -DDISABLE_PWRSAVE_AND_SCAN_DURING_IP \
+		-DWILC_PLATFORM=WILC_LINUXKERNEL -Wno-unused-function -DUSE_WIRELESS \
+		-DWILC_DEBUGFS
+#ccflags-y += -DTCP_ACK_FILTER
+
+ccflags-$(CONFIG_WILC1000_PREALLOCATE_DURING_SYSTEM_BOOT) += -DMEMORY_STATIC \
+								-DWILC_PREALLOC_AT_BOOT
+
+ccflags-$(CONFIG_WILC1000_PREALLOCATE_AT_LOADING_DRIVER) += -DMEMORY_STATIC \
+								-DWILC_PREALLOC_AT_INSMOD
+
+ccflags-$(CONFIG_WILC1000_DYNAMICALLY_ALLOCATE_MEMROY) += -DWILC_NORMAL_ALLOC
+
+
+wilc1000-objs := wilc_wfi_netdevice.o wilc_wfi_cfgoperations.o linux_wlan.o linux_mon.o \
+			wilc_memory.o wilc_msgqueue.o wilc_semaphore.o wilc_sleep.o wilc_strutils.o \
+			wilc_thread.o wilc_time.o wilc_timer.o coreconfigurator.o host_interface.o \
+			fifo_buffer.o wilc_sdio.o wilc_spi.o wilc_wlan_cfg.o wilc_debugfs.o
+
+wilc1000-$(CONFIG_WILC1000_SDIO) += linux_wlan_sdio.o
+wilc1000-$(CONFIG_WILC1000_SPI) += linux_wlan_spi.o
+
+WILC1000_SRC_VERSION = 10.0
+PATCHLEVEL = 2
+WILC1000_FW_VERSION = 0
+
+ccflags-y += -D__DRIVER_VERSION__=\"$(WILC1000_SRC_VERSION).$(PATCHLEVEL)\"

drivers/staging/wilc1000/TODO

@@ -0,0 +1,8 @@
+TODO:
+- remove the defined feature as kernel versions
+- remove OS wrapper functions
+- remove custom debug and tracing functions
+- rework comments and function headers(also coding style)
+- remove build warnings
+- support soft-ap and p2p mode
+- support resume/suspend function

drivers/staging/wilc1000/coreconfigsimulator.h

@@ -0,0 +1,20 @@
+
+/*!
+ *  @file	coreconfigsimulator.h
+ *  @brief
+ *  @author
+ *  @sa		coreconfigsimulator.c
+ *  @date	1 Mar 2012
+ *  @version	1.0
+ */
+
+
+#ifndef CORECONFIGSIMULATOR_H
+#define CORECONFIGSIMULATOR_H
+
+
+extern WILC_Sint32 CoreConfigSimulatorInit (void);
+extern WILC_Sint32 CoreConfigSimulatorDeInit (void);
+
+
+#endif