linux-kernel - [PATCH 5/9] drm: atmel-hlcdc: add compatible string check for XLCDC and HLCDC

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Message-ID: <20230613070426.467389-6-manikandan.m@microchip.com>
Date:   Tue, 13 Jun 2023 12:34:22 +0530
From:   Manikandan Muralidharan <manikandan.m@...rochip.com>
To:     <lee@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <claudiu.beznea@...rochip.com>, <sam@...nborg.org>,
        <bbrezillon@...nel.org>, <airlied@...il.com>, <daniel@...ll.ch>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>
CC:     <Hari.PrasathGE@...rochip.com>,
        <Balamanikandan.Gunasundar@...rochip.com>,
        <Durai.ManickamKR@...rochip.com>, <Nayabbasha.Sayed@...rochip.com>,
        <Dharma.B@...rochip.com>, <Varshini.Rajendran@...rochip.com>,
        <Balakrishnan.S@...rochip.com>,
        Manikandan <manikandan.m@...rochip.com>,
        Durai Manickam KR <durai.manickamkr@...rochip.com>
Subject: [PATCH 5/9] drm: atmel-hlcdc: add compatible string check for XLCDC and HLCDC

From: Durai Manickam KR <durai.manickamkr@...rochip.com>

Add compatible string check to differentiate XLCDC and HLCDC code
within the atmel-hlcdc driver files.

Signed-off-by: Durai Manickam KR <durai.manickamkr@...rochip.com>
Signed-off-by: Manikandan Muralidharan <manikandan.m@...rochip.com>
---
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 7 +++++++
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index d7ad828e9e8c..fbbd2592efc7 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -761,6 +761,13 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev)
 	if (!dc)
 		return -ENOMEM;
 
+	/* SAM9X7 supports XLCDC */
+	if (!strcmp(match->compatible, "microchip,sam9x7-xlcdc"))
+		dc->is_xlcdc = true;
+	else
+		/* Other SoC's that supports HLCDC IP */
+		dc->is_xlcdc = false;
+
 	dc->desc = match->data;
 	dc->hlcdc = dev_get_drvdata(dev->dev->parent);
 	dev->dev_private = dc;
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
index aed1742b3665..804e4d476f2b 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
@@ -451,6 +451,7 @@ struct atmel_hlcdc_dc {
 		u32 imr;
 		struct drm_atomic_state *state;
 	} suspend;
+	bool is_xlcdc;
 };
 
 extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
-- 
2.25.1