p54spi: Kconfig option for config blob

This patch adds an Kconfig option, which allows the user
to select, whenever he/she wants to include a 4k blob for
generic calibration and interface values into the driver,
or cut the module size by about 15 to 20%.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 23 insertions, 1 deletions

diff --git a/drivers/net/wireless/p54/Kconfig b/drivers/net/wireless/p54/Kconfig
index 60a930e45a8b..e5f45cb2a7a2 100644
--- a/drivers/net/wireless/p54/Kconfig
+++ b/drivers/net/wireless/p54/Kconfig
@@ -49,6 +49,23 @@ config P54_SPI
 
           If you choose to build a module, it'll be called p54spi.
 
+config P54_SPI_DEFAULT_EEPROM
+        bool "Include fallback EEPROM blob"
+        depends on P54_SPI
+        default n
+        ---help---
+         Unlike the PCI or USB devices, the SPI variants don't have
+         a dedicated EEPROM chip to store all device specific values
+         for calibration, country and interface settings.
+
+         The driver will try to load the image "3826.eeprom", if the
+         file is put at the right place. (usually /lib/firmware.)
+
+         Only if this request fails, this option will provide a
+         backup set of generic values to get the device working.
+
+         Enabling this option adds about 4k to p54spi.
+
 config P54_LEDS
         bool
         depends on P54_COMMON && MAC80211_LEDS && (LEDS_CLASS = y || LEDS_CLASS = P54_COMMON)
diff --git a/drivers/net/wireless/p54/p54spi.c b/drivers/net/wireless/p54/p54spi.c
index 087bf0698a5a..156e57dbd2cf 100644
--- a/drivers/net/wireless/p54/p54spi.c
+++ b/drivers/net/wireless/p54/p54spi.c
@@ -32,11 +32,14 @@
 #include <linux/slab.h>
 
 #include "p54spi.h"
-#include "p54spi_eeprom.h"
 #include "p54.h"
 
 #include "lmac.h"
 
+#ifdef CONFIG_P54_SPI_DEFAULT_EEPROM
+#include "p54spi_eeprom.h"
+#endif /* CONFIG_P54_SPI_DEFAULT_EEPROM */
+
 MODULE_FIRMWARE("3826.arm");
 MODULE_ALIAS("stlc45xx");
 
@@ -195,9 +198,11 @@ static int p54spi_request_eeprom(struct ieee80211_hw *dev)
 
         ret = request_firmware(&eeprom, "3826.eeprom", &priv->spi->dev);
         if (ret < 0) {
+#ifdef CONFIG_P54_SPI_DEFAULT_EEPROM
                 dev_info(&priv->spi->dev, "loading default eeprom...\n");
                 ret = p54_parse_eeprom(dev, (void *) p54spi_eeprom,
                                        sizeof(p54spi_eeprom));
+#endif /* CONFIG_P54_SPI_DEFAULT_EEPROM */
         } else {
                 dev_info(&priv->spi->dev, "loading user eeprom...\n");
                 ret = p54_parse_eeprom(dev, (void *) eeprom->data,