pcmcia: introduce autoconfiguration feature

Introduce an autoconfiguration feature to set certain values in
pcmcia_loop_config(), instead of copying the same code over and over
in each PCMCIA driver. At first, introduce the following options:

CONF_AUTO_CHECK_VCC	check or matching Vcc entry
CONF_AUTO_SET_VPP	set Vpp
CONF_AUTO_AUDIO		enable the speaker line

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
CC: linux-scsi@vger.kernel.org
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi> (for drivers/bluetooth)
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

include/pcmcia/ds.h

@@ -177,7 +177,6 @@ int pcmcia_loop_config(struct pcmcia_device *p_dev,
 		       int	(*conf_check)	(struct pcmcia_device *p_dev,
 						 cistpl_cftable_entry_t *cf,
 						 cistpl_cftable_entry_t *dflt,
-						 unsigned int vcc,
 						 void *priv_data),
 		       void *priv_data);
 
@@ -270,6 +269,12 @@ static inline int pcmcia_io_cfg_data_width(unsigned int flags)
 #define CONF_ENABLE_PULSE_IRQ   0x04
 #define CONF_ENABLE_ESR         0x08
 
+/* flags used by pcmcia_loop_config() autoconfiguration */
+#define CONF_AUTO_CHECK_VCC	0x10 /* check for matching Vcc? */
+#define CONF_AUTO_SET_VPP	0x20 /* set Vpp? */
+#define CONF_AUTO_AUDIO		0x40 /* enable audio line? */
+
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_DS_H */