wlcore: move wl12xx_platform_data up and make it truly optional

The platform data is used not only by wlcore-based drivers, but also
by wl1251. Move it up in the directory hierarchy to reflect this.

Additionally, make it truly optional. At the moment, disabling
platform data while wl1251_sdio or wlcore_sdio are enabled doesn't
work, but it will be necessary when device tree support is
implemented.

Signed-off-by: Luciano Coelho <[e-mail]>
Reviewed-by: Felipe Balbi <[e-mail]>

arch/arm/mach-omap2/board-omap3evm.c

···
 		.gpio_wp	= 63,
 		.deferred	= true,
 	},
-#ifdef CONFIG_WL12XX_PLATFORM_DATA
+#ifdef CONFIG_WILINK_PLATFORM_DATA
 	{
 		.name		= "wl1271",
 		.mmc		= 2,
···
 	.consumer_supplies	= omap3evm_vio_supply,
 };
 
-#ifdef CONFIG_WL12XX_PLATFORM_DATA
+#ifdef CONFIG_WILINK_PLATFORM_DATA
 
 #define OMAP3EVM_WLAN_PMENA_GPIO	(150)
 #define OMAP3EVM_WLAN_IRQ_GPIO		(149)
···
 				OMAP_PIN_OFF_NONE),
 	OMAP3_MUX(GPMC_WAIT2, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
 				OMAP_PIN_OFF_NONE),
-#ifdef CONFIG_WL12XX_PLATFORM_DATA
+#ifdef CONFIG_WILINK_PLATFORM_DATA
 	/* WLAN IRQ - GPIO 149 */
 	OMAP3_MUX(UART1_RTS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 
···
 	OMAP3_MUX(SYS_BOOT4, OMAP_MUX_MODE3 | OMAP_PIN_OFF_NONE),
 	OMAP3_MUX(SYS_BOOT5, OMAP_MUX_MODE3 | OMAP_PIN_OFF_NONE),
 	OMAP3_MUX(SYS_BOOT6, OMAP_MUX_MODE3 | OMAP_PIN_OFF_NONE),
-#ifdef CONFIG_WL12XX_PLATFORM_DATA
+#ifdef CONFIG_WILINK_PLATFORM_DATA
 	/* WLAN IRQ - GPIO 149 */
 	OMAP3_MUX(UART1_RTS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 
···
 
 static void __init omap3_evm_wl12xx_init(void)
 {
-#ifdef CONFIG_WL12XX_PLATFORM_DATA
+#ifdef CONFIG_WILINK_PLATFORM_DATA
 	int ret;
 
 	/* WL12xx WLAN Init */

drivers/net/wireless/ti/Kconfig

···
 
 # keep last for automatic dependencies
 source "drivers/net/wireless/ti/wlcore/Kconfig"
+
+config WILINK_PLATFORM_DATA
+	bool "TI WiLink platform data"
+	depends on WLCORE_SDIO || WL1251_SDIO
+	default y
+	---help---
+	Small platform data bit needed to pass data to the sdio modules.
+
+
 endif # WL_TI

drivers/net/wireless/ti/Makefile

···
 obj-$(CONFIG_WLCORE)			+= wlcore/
 obj-$(CONFIG_WL12XX)			+= wl12xx/
-obj-$(CONFIG_WL12XX_PLATFORM_DATA)	+= wlcore/
 obj-$(CONFIG_WL1251)			+= wl1251/
 obj-$(CONFIG_WL18XX)			+= wl18xx/
+
+# small builtin driver bit
+obj-$(CONFIG_WILINK_PLATFORM_DATA)	+= wilink_platform_data.o

drivers/net/wireless/ti/wlcore/Kconfig

···
 
 	  If you choose to build a module, it'll be called wlcore_sdio.
 	  Say N if unsure.
-
-config WL12XX_PLATFORM_DATA
-	bool
-	depends on WLCORE_SDIO != n || WL1251_SDIO != n
-	default y

drivers/net/wireless/ti/wlcore/Makefile

···
 obj-$(CONFIG_WLCORE_SPI)		+= wlcore_spi.o
 obj-$(CONFIG_WLCORE_SDIO)		+= wlcore_sdio.o
 
-# small builtin driver bit
-obj-$(CONFIG_WL12XX_PLATFORM_DATA)	+= wl12xx_platform_data.o
-
 ccflags-y += -D__CHECK_ENDIAN__

include/linux/wl12xx.h

···
 #ifndef _LINUX_WL12XX_H
 #define _LINUX_WL12XX_H
 
+#include <linux/err.h>
+
 /* Reference clock values */
 enum {
 	WL12XX_REFCLOCK_19	= 0, /* 19.2 MHz */
···
 /* Platform does not support level trigger interrupts */
 #define WL12XX_PLATFORM_QUIRK_EDGE_IRQ	BIT(0)
 
-#ifdef CONFIG_WL12XX_PLATFORM_DATA
+#ifdef CONFIG_WILINK_PLATFORM_DATA
 
 int wl12xx_set_platform_data(const struct wl12xx_platform_data *data);
+
+struct wl12xx_platform_data *wl12xx_get_platform_data(void);
 
 #else
 
···
 	return -ENOSYS;
 }
 
-#endif
+static inline
+struct wl12xx_platform_data *wl12xx_get_platform_data(void)
+{
+	return ERR_PTR(-ENODATA);
+}
 
-struct wl12xx_platform_data *wl12xx_get_platform_data(void);
+#endif
 
 #endif