linux-kernel - [PATCH] drm/ast: Create chip AST2600

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Date:   Mon, 9 Nov 2020 17:38:12 +0800
From:   KuoHsiang Chou <kuohsiang_chou@...eedtech.com>
To:     <tzimmermann@...e.de>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>
CC:     <airlied@...hat.com>, <airlied@...ux.ie>, <daniel@...ll.ch>,
        <jenmin_yuan@...eedtech.com>, <kuohsiang_chou@...eedtech.com>,
        <arc_sung@...eedtech.com>, <tommy_huang@...eedtech.com>
Subject: [PATCH] drm/ast: Create chip AST2600

[New] Support AST2600

Signed-off-by: KuoHsiang Chou <kuohsiang_chou@...eedtech.com>
---
 drivers/gpu/drm/ast/ast_drv.h  | 1 +
 drivers/gpu/drm/ast/ast_main.c | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 467049ca8430..6b9e3b94a712 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -63,6 +63,7 @@ enum ast_chip {
 	AST2300,
 	AST2400,
 	AST2500,
+	AST2600,
 };

 enum ast_tx_chip {
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 77066bca8793..4ec6884f6c65 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -143,7 +143,10 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
 	ast_detect_config_mode(dev, &scu_rev);

 	/* Identify chipset */
-	if (dev->pdev->revision >= 0x40) {
+	if (dev->pdev->revision >= 0x50) {
+		ast->chip = AST2600;
+		drm_info(dev, "AST 2600 detected\n");
+	} else if (dev->pdev->revision >= 0x40) {
 		ast->chip = AST2500;
 		drm_info(dev, "AST 2500 detected\n");
 	} else if (dev->pdev->revision >= 0x30) {
--
2.18.4