ENGR00141312 tve: add uevent for tve cable detection

When cable mode changed, below uevent will be sent out:
EVENT=NONE
EVENT=CVBS0
EVENT=YPBPR
EVENT=SVIDEO
under /sys/devices/platform/tve.0

Signed-off-by: Jason Chen <b02280@freescale.com>

diff --git a/drivers/video/mxc/tve.c b/drivers/video/mxc/tve.c
index 3470bd445ca837446f850ff379fb1d5f22deb491..b29c1d5fd5efcb1bef67fd669eb66003ebb96ab9 100644 (file)
--- a/drivers/video/mxc/tve.c
+++ b/drivers/video/mxc/tve.c
@@ -745,6 +745,8 @@ static int tve_update_detect_status(void)
        u32 cd_cont_reg;
        u32 timeout = 40;
        unsigned long lock_flags;
+       char event_string[16];
+       char *envp[] = { event_string, NULL };
 
        spin_lock_irqsave(&tve_lock, lock_flags);
 
@@ -826,8 +828,18 @@ static int tve_update_detect_status(void)
        __raw_writel(int_ctl | CD_SM_INT | CD_LM_INT,
                        tve.base + tve_regs->tve_int_cont_reg);
 
-       if (old_detect != tve.detect)
+       if (old_detect != tve.detect) {
                sysfs_notify(&tve.pdev->dev.kobj, NULL, "headphone");
+               if (tve.detect == 1)
+                       sprintf(event_string, "EVENT=CVBS0");
+               else if (tve.detect == 3)
+                       sprintf(event_string, "EVENT=YPBPR");
+               else if (tve.detect == 4)
+                       sprintf(event_string, "EVENT=SVIDEO");
+               else
+                       sprintf(event_string, "EVENT=NONE");
+               kobject_uevent_env(&tve.pdev->dev.kobj, KOBJ_CHANGE, envp);
+       }
 
        dev_dbg(&tve.pdev->dev, "detect = %d mode = %d\n",
                        tve.detect, tve.output_mode);