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OMAPDSS: MANAGER: Update display sysfs store

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The display sysfs attribute's store function needs to be changed with the
introduction of outputs.

The DSS driver ensures that there is one display per output, and that a
registered omap_dss_device will have an output connected to it. The display
sysfs store function unsets the current output connected to the manager, and
sets it with the output connected to the new display. If the new display doesn't
have an output for some reason, we just bail out. The function doesn't set/unset
output->device links. These remain the same as when the omap_dss_device was
registered.

Signed-off-by: Archit Taneja <archit@ti.com>
This commit is contained in:
Archit Taneja 2012-09-07 18:00:07 +05:30 committed by Tomi Valkeinen
parent 952cbaaa9b
commit 947b225424
1 changed files with 16 additions and 5 deletions
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21
drivers/video/omap2/dss/manager-sysfs.c
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@ -69,18 +69,29 @@ static ssize_t manager_display_store(struct omap_overlay_manager *mgr,
if (dssdev)
DSSDBG("display %s found\n", dssdev->name);
if (mgr->get_device(mgr)) {
r = mgr->unset_device(mgr);
if (mgr->output) {
r = mgr->unset_output(mgr);
if (r) {
DSSERR("failed to unset display\n");
DSSERR("failed to unset current output\n");
goto put_device;
}
}
if (dssdev) {
r = mgr->set_device(mgr, dssdev);
struct omap_dss_output *out = dssdev->output;
/*
* a registered device should have an output connected to it
* already
*/
if (!out) {
DSSERR("device has no output connected to it\n");
goto put_device;
}
r = mgr->set_output(mgr, out);
if (r) {
DSSERR("failed to set manager\n");
DSSERR("failed to set manager output\n");
goto put_device;
}