linux-kernel - [PATCH v3 1/3] drm/tidss: oldi: Add property to identify OLDI supported VP

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Message-ID: <20250701095541.190422-2-j-choudhary@ti.com>
Date: Tue, 1 Jul 2025 15:25:39 +0530
From: Jayesh Choudhary <j-choudhary@...com>
To: <jyri.sarha@....fi>, <maarten.lankhorst@...ux.intel.com>,
        <mripard@...nel.org>, <tzimmermann@...e.de>,
        <dri-devel@...ts.freedesktop.org>, <devarsht@...com>,
        <tomi.valkeinen@...asonboard.com>, <mwalle@...nel.org>
CC: <airlied@...il.com>, <simona@...ll.ch>, <linux-kernel@...r.kernel.org>,
        <j-choudhary@...com>
Subject: [PATCH v3 1/3] drm/tidss: oldi: Add property to identify OLDI supported VP

TIDSS should know which VP has OLDI output to avoid calling clock
functions for that VP as those are controlled by oldi driver. Add a
property "is_oldi_vp" to "tidss_device" structure for that. Mark it
'true' in tidss_oldi_init() and 'false' in tidss_oldi_deinit().

Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---
 drivers/gpu/drm/tidss/tidss_drv.h  | 2 ++
 drivers/gpu/drm/tidss/tidss_oldi.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/tidss/tidss_drv.h b/drivers/gpu/drm/tidss/tidss_drv.h
index 0ae24f645582..82beaaceadb3 100644
--- a/drivers/gpu/drm/tidss/tidss_drv.h
+++ b/drivers/gpu/drm/tidss/tidss_drv.h
@@ -24,6 +24,8 @@ struct tidss_device {
 
 	const struct dispc_features *feat;
 	struct dispc_device *dispc;
+	bool is_oldi_vp[TIDSS_MAX_PORTS];
+
 
 	unsigned int num_crtcs;
 	struct drm_crtc *crtcs[TIDSS_MAX_PORTS];
diff --git a/drivers/gpu/drm/tidss/tidss_oldi.c b/drivers/gpu/drm/tidss/tidss_oldi.c
index b0f99656e87e..63e07c8edeaa 100644
--- a/drivers/gpu/drm/tidss/tidss_oldi.c
+++ b/drivers/gpu/drm/tidss/tidss_oldi.c
@@ -430,6 +430,7 @@ void tidss_oldi_deinit(struct tidss_device *tidss)
 	for (int i = 0; i < tidss->num_oldis; i++) {
 		if (tidss->oldis[i]) {
 			drm_bridge_remove(&tidss->oldis[i]->bridge);
+			tidss->is_oldi_vp[tidss->oldis[i]->parent_vp] = false;
 			tidss->oldis[i] = NULL;
 		}
 	}
@@ -579,6 +580,7 @@ int tidss_oldi_init(struct tidss_device *tidss)
 		oldi->bridge.timings = &default_tidss_oldi_timings;
 
 		tidss->oldis[tidss->num_oldis++] = oldi;
+		tidss->is_oldi_vp[oldi->parent_vp] = true;
 		oldi->tidss = tidss;
 
 		drm_bridge_add(&oldi->bridge);
-- 
2.34.1