From 7bf54afec961504d9618074539ec9ae2b8de8554 Mon Sep 17 00:00:00 2001
From: Jitao Shi <jitao.shi@mediatek.com>
Date: Sun, 11 Aug 2019 18:40:05 +0800
Subject: drm/mediatek: add frame size control
Git-commit: 7bf54afec961504d9618074539ec9ae2b8de8554
Patch-mainline: v5.5-rc1
References: bsc#1152489

Our new DSI chip has frame size control.
So add the driver data to control for different chips.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/mediatek/mtk_dsi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 881c0afabf17..ac1a24035fef 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -72,6 +72,7 @@
 #define DSI_VBP_NL		0x24
 #define DSI_VFP_NL		0x28
 #define DSI_VACT_NL		0x2C
+#define DSI_SIZE_CON		0x38
 #define DSI_HSA_WC		0x50
 #define DSI_HBP_WC		0x54
 #define DSI_HFP_WC		0x58
@@ -156,6 +157,7 @@ struct phy;
 struct mtk_dsi_driver_data {
 	const u32 reg_cmdq_off;
 	bool has_shadow_ctl;
+	bool has_size_ctl;
 };
 
 struct mtk_dsi {
@@ -424,6 +426,10 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
 	writel(vm->vfront_porch, dsi->regs + DSI_VFP_NL);
 	writel(vm->vactive, dsi->regs + DSI_VACT_NL);
 
+	if (dsi->driver_data->has_size_ctl)
+		writel(vm->vactive << 16 | vm->hactive,
+		       dsi->regs + DSI_SIZE_CON);
+
 	horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10);
 
 	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
-- 
2.28.0