cw1200: Rework SDIO platform support to prevent build problems.

Based on discussions with And Bergmann, this patch changes the SDIO
platform code to default to supporting the Sagrad devices, allowing for
it to be overridden in board setup code.  This renders the cw1200_sagrad
module suplerflous, so it is now removed.

It also moves the documentation that was in the cw1200_sagrad source to
the platform header.

Signed-off-by: Solomon Peachy <pizza@shaftnet.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 36 insertions, 1 deletions

diff --git a/include/linux/platform_data/cw1200_platform.h b/include/linux/platform_data/cw1200_platform.h
index 4454c16ea3e..c6fbc3ce4ab 100644
--- a/include/linux/platform_data/cw1200_platform.h
+++ b/include/linux/platform_data/cw1200_platform.h
@@ -41,6 +41,41 @@ struct cw1200_platform_data_sdio {
 	const char *sdd_file;  /* if NULL, will use default for detected hw type */
 };
 
-const void *cw1200_get_platform_data(void);
+
+/* An example of SPI support in your board setup file:
+
+   static struct cw1200_platform_data_spi cw1200_platform_data = {
+       .ref_clk = 38400,
+       .spi_bits_per_word = 16,
+       .reset = GPIO_RF_RESET,
+       .powerup = GPIO_RF_POWERUP,
+       .macaddr = wifi_mac_addr,
+       .sdd_file = "sdd_sagrad_1091_1098.bin",
+  };
+  static struct spi_board_info myboard_spi_devices[] __initdata = {
+       {
+               .modalias = "cw1200_wlan_spi",
+               .max_speed_hz = 52000000,
+               .bus_num = 0,
+               .irq = WIFI_IRQ,
+               .platform_data = &cw1200_platform_data,
+               .chip_select = 0,
+       },
+  };
+
+ */
+
+/* An example of SDIO support in your board setup file:
+
+  static struct cw1200_platform_data_sdio my_cw1200_platform_data = {
+	.ref_clk = 38400,
+	.have_5ghz = false,
+	.sdd_file = "sdd_myplatform.bin",
+  };
+  cw1200_sdio_set_platform_data(&my_cw1200_platform_data);
+
+ */
+
+void __init cw1200_sdio_set_platform_data(struct cw1200_platform_data_sdio *pdata);
 
 #endif /* CW1200_PLAT_H_INCLUDED */