linux-kernel - [PATCH] drm/ast: Add resolution support for 1152x864@75

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Message-ID: <20220916081416.1824-1-jammy_huang@aspeedtech.com>
Date:   Fri, 16 Sep 2022 16:14:16 +0800
From:   Jammy Huang <jammy_huang@...eedtech.com>
To:     <airlied@...hat.com>, <tzimmermann@...e.de>, <airlied@...ux.ie>,
        <daniel@...ll.ch>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm/ast: Add resolution support for 1152x864@75

Add 1152x864 into support list.

Signed-off-by: Jammy Huang <jammy_huang@...eedtech.com>
---
 drivers/gpu/drm/ast/ast_mode.c   | 3 +++
 drivers/gpu/drm/ast/ast_tables.h | 7 +++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 214b10178454..0b2c5fe8dc2c 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -114,6 +114,9 @@ static bool ast_get_vbios_mode_info(const struct drm_format_info *format,
 	case 1024:
 		vbios_mode->enh_table = &res_1024x768[refresh_rate_index];
 		break;
+	case 1152:
+		vbios_mode->enh_table = &res_1152x864[refresh_rate_index];
+		break;
 	case 1280:
 		if (mode->crtc_vdisplay == 800)
 			vbios_mode->enh_table = &res_1280x800[refresh_rate_index];
diff --git a/drivers/gpu/drm/ast/ast_tables.h b/drivers/gpu/drm/ast/ast_tables.h
index dbe1cc620f6e..0378c9bc079b 100644
--- a/drivers/gpu/drm/ast/ast_tables.h
+++ b/drivers/gpu/drm/ast/ast_tables.h
@@ -272,6 +272,13 @@ static const struct ast_vbios_enhtable res_1600x1200[] = {
 	 (SyncPP | Charx8Dot), 0xFF, 1, 0x33 },
 };
 
+static const struct ast_vbios_enhtable res_1152x864[] = {
+	{1600, 1152, 64, 128,  900,  864, 1, 3, VCLK108,	/* 75Hz */
+	 (SyncPP | Charx8Dot | NewModeInfo), 75, 1, 0x3B },
+	{1600, 1152, 64, 128,  900,  864, 1, 3, VCLK108,	/* end */
+	 (SyncPP | Charx8Dot | NewModeInfo), 0xFF, 1, 0x3B },
+};
+
 /* 16:9 */
 static const struct ast_vbios_enhtable res_1360x768[] = {
 	{1792, 1360, 64, 112, 795, 768, 3, 6, VCLK85_5,		/* 60Hz */
-- 
2.25.1