@@ -1485,6 +1485,135 @@ static int parse_mode(const char *str, u
return 0;
}
+/* stage=0: count devices to set dual and/or SAMM;
+ stage=1: add devices, detected only via i2c legacy;
+ set LCD/DVI/CRT if viafb_active_dev unset */
+static void viafb_detect_dev(int stage, struct viafb_dev *vdev)
+{
+ u8 *edid;
+ struct fb_var_screeninfo var;
+ int i, t, ndev = 0, nlcd = 0, unknown = 0;
+ struct i2c_adapter *adapter;
+ struct lvds_setting_information *inf;
+
+ /* FIXME: viaparinfo1->chip_info looks equal to viaparinfo */
+ i = !viafb_active_dev && stage;
+ if (viaparinfo->chip_info->tmds_chip_info.tmds_chip_name) {
+ ndev++;
+ if (i)
+ viafb_DVI_ON = STATE_ON;
+ }
+ if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
+ ndev++;
+ nlcd = 1;
+ if (i)
+ viafb_LCD_ON = STATE_ON;
+ }
+ if (viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name) {
+ ndev++;
+ nlcd = 2;
+ if (i)
+ viafb_LCD2_ON = STATE_ON;
+ }
+ /* enabling CRT in textmode is at least no bad */
+ if (viafb_CRT_ON) {
+ ndev++;
+ viafb_crt_enable();
+ }
+ for (i = 0; i < VIAFB_NUM_PORTS; i++) {
+ t = vdev->port_cfg[i].type;
+ /* detect only i2c ports, undetected in other places */
+ if ((viaparinfo && viaparinfo->chip_info && (
+ (viaparinfo->chip_info->tmds_chip_info.tmds_chip_name &&
+ viaparinfo->chip_info->tmds_chip_info.i2c_port == t) ||
+ (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name &&
+ viaparinfo->chip_info->lvds_chip_info.i2c_port == t) ||
+ (viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name &&
+ viaparinfo->chip_info->lvds_chip_info2.i2c_port == t)
+ )) || (viaparinfo1 && viaparinfo1->chip_info && (
+ (viaparinfo1->chip_info->tmds_chip_info.tmds_chip_name &&
+ viaparinfo1->chip_info->tmds_chip_info.i2c_port == t) ||
+ (viaparinfo1->chip_info->lvds_chip_info.lvds_chip_name &&
+ viaparinfo1->chip_info->lvds_chip_info.i2c_port == t) ||
+ (viaparinfo1->chip_info->lvds_chip_info2.lvds_chip_name &&
+ viaparinfo1->chip_info->lvds_chip_info2.i2c_port == t)
+ )) || !(adapter = viafb_find_i2c_adapter(i)) ||
+ !(edid = fb_ddc_read(adapter)))
+ continue;
+ memset(&var, 0, sizeof(var));
+ if (fb_parse_edid(edid, &var))
+ goto free_edid;
+ printk(KERN_INFO "viafb: %48s\n", adapter->name);
+ inf = NULL;
+ if (!stage) {
+ } else if (!nlcd) {
+ fb_edid_to_monspecs(edid, &viafbinfo->monspecs);
+ if (viafbinfo->monspecs.input & FB_DISP_DDI)
+ inf = viaparinfo->lvds_setting_info;
+ else
+ unknown++;
+ } else if (nlcd > 1) {
+ printk(KERN_ERR "viafb: too many LCD\n");
+ unknown++;
+ } else if (viafb_dual_fb) {
+ fb_edid_to_monspecs(edid, &viafbinfo1->monspecs);
+ if (viafbinfo1->monspecs.input & FB_DISP_DDI)
+ inf = viaparinfo1->lvds_setting_info;
+ else
+ unknown++;
+ } else {
+ fb_edid_to_monspecs(edid, &viafbinfo->monspecs);
+ if (viafbinfo->monspecs.input & FB_DISP_DDI)
+ inf = viaparinfo->lvds_setting_info2;
+ else
+ unknown++;
+ }
+ if (inf) {
+ if (!viafb_active_dev) {
+ if (nlcd)
+ viafb_LCD2_ON = STATE_ON;
+ else
+ viafb_LCD_ON = STATE_ON;
+ }
+ nlcd++;
+ if (var.xres)
+ inf->lcd_panel_hres = var.xres;
+ if (var.yres)
+ inf->lcd_panel_vres = var.yres;
+ }
+ ndev++;
+free_edid:
+ kfree(edid);
+ }
+ if (!viafb_active_dev) {
+ /* prefer CRT OFF if other devices */
+#if 1
+ if (unknown) {
+ if (!viafb_CRT_ON) {
+ viafb_CRT_ON = STATE_ON;
+ ndev++;
+ }
+ } else if (ndev > 1 && viafb_CRT_ON) {
+ viafb_CRT_ON = STATE_OFF;
+ ndev--;
+ }
+#endif
+ /* SAMM may be detected on stage 1,
+ but troubles coming together & dual not wrong */
+ if (ndev > 1 && !stage)
+ viafb_SAMM_ON = viafb_dual_fb = STATE_ON;
+ viafb_DeviceStatus = viafb_primary_dev =
+ viafb_CRT_ON ? CRT_Device :
+ viafb_DVI_ON ? DVI_Device :
+ viafb_LCD_ON ? LCD_Device : None_Device;
+ if (stage) {
+ if (!viafb_CRT_ON)
+ viafb_crt_disable();
+ viafb_set_iga_path();
+ }
+ }
+}
+
int __devinit via_fb_pci_probe(struct viafb_dev *vdev)
{
@@ -1526,6 +1655,10 @@ int __devinit via_fb_pci_probe(struct vi
parse_dvi_port();
viafb_init_chip_info(vdev->chip_type);
+ /* detect dual_fb & SAMM_ON, but let's keep it to options */
+#if 0
+ viafb_detect_dev(0, vdev);
+#endif
/*
* The framebuffer will have been successfully mapped by
* the core (or we'd not be here), but we still need to
@@ -1675,6 +1808,8 @@ int __devinit via_fb_pci_probe(struct vi
viafb_init_proc(&viaparinfo->shared->proc_entry);
#endif
viafb_init_dac(IGA2);
+ /* update from legacy i2c DDC info */
+ viafb_detect_dev(1, vdev);
return 0;
out_fb_unreg:
@@ -167,7 +167,7 @@ struct i2c_adapter *viafb_find_i2c_adapt
{
struct via_i2c_stuff *stuff = &via_i2c_par[which];
- return &stuff->adapter;
+ return stuff->is_active ? &stuff->adapter : NULL;
}
EXPORT_SYMBOL_GPL(viafb_find_i2c_adapter);