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Add iic driver iff the corresponding devclass exists.

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This commit is contained in:
Nicolas Souchu 1998-11-07 14:33:46 +00:00
parent dec0ec9e81
commit 99a6f52d8f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=40992
1 changed files with 8 additions and 7 deletions
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15
sys/dev/iicbus/iicbus.c
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@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: iicbus.c,v 1.1.1.1 1998/09/03 20:51:50 nsouch Exp $
* $Id: iicbus.c,v 1.2 1998/10/31 11:31:07 nsouch Exp $
*
*/
@ -65,7 +65,7 @@ struct iicbus_device {
#define PCF_MASTER_ADDRESS 0xaa
#define FIRST_SLAVE_ADDR 0x2
#define MAXSLAVE 256
#define LAST_SLAVE_ADDR 255
#define IICBUS_UNKNOWN_CLASS 0
#define IICBUS_DEVICE_CLASS 1
@ -127,8 +127,7 @@ iicbus_probe(device_t dev)
return (0);
}
#define MAXADDR 256
static int iicdev_found[MAXADDR];
static int iicdev_found[LAST_SLAVE_ADDR+1];
static int
iic_probe_device(device_t dev, u_char addr)
@ -169,7 +168,7 @@ iicbus_attach(device_t dev)
printf("Probing for devices on iicbus%d:", device_get_unit(dev));
/* probe any devices */
for (addr = FIRST_SLAVE_ADDR; addr < MAXADDR; addr++) {
for (addr = FIRST_SLAVE_ADDR; addr <= LAST_SLAVE_ADDR; addr++) {
if (iic_probe_device(dev, (u_char)addr)) {
printf(" <%x>", addr);
}
@ -178,7 +177,6 @@ iicbus_attach(device_t dev)
/* attach known devices */
for (iicdev = iicbus_children; iicdev->iicd_name; iicdev++) {
/* probe devices, not drivers */
switch (iicdev->iicd_class) {
case IICBUS_DEVICE_CLASS:
if (iic_probe_device(dev, iicdev->iicd_addr))
@ -186,7 +184,9 @@ iicbus_attach(device_t dev)
break;
case IICBUS_DRIVER_CLASS:
iicdev->iicd_alive = 1;
/* check if the devclass exists */
if (!devclass_find(iicdev->iicd_name))
iicdev->iicd_alive = 1;
break;
default:
@ -278,3 +278,4 @@ iicbus_write_ivar(device_t bus, device_t dev, int index, u_long val)
DRIVER_MODULE(iicbus, pcf, iicbus_driver, iicbus_devclass, 0, 0);
DRIVER_MODULE(iicbus, iicbb, iicbus_driver, iicbus_devclass, 0, 0);
DRIVER_MODULE(iicbus, bti2c, iicbus_driver, iicbus_devclass, 0, 0);
DRIVER_MODULE(iicbus, smbtx, iicbus_driver, iicbus_devclass, 0, 0);