From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Fri, 1 Dec 2017 07:05:43 +0100
Subject: drm/sun4i: Add scaler configuration to DE2 mixers
Git-commit: 5b1f8367f3ea1a74414a4dce3ccb2e76fdd84385
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

No all SoCs support scaling on all channels. For example, V3s support
scaling only on VI channels. Because of that, add additional
configuration bitmask which tells which channel support scaler.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-21-jernej.skrabec@siol.net

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/sun4i/sun8i_mixer.c |    1 +
 drivers/gpu/drm/sun4i/sun8i_mixer.h |   10 ++++++++++
 2 files changed, 11 insertions(+)

--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -336,6 +336,7 @@ static int sun8i_mixer_remove(struct pla
 static const struct sun8i_mixer_cfg sun8i_v3s_mixer_cfg = {
 	.vi_num = 2,
 	.ui_num = 1,
+	.scaler_mask = 0x3,
 };
 
 static const struct of_device_id sun8i_mixer_of_table[] = {
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -94,9 +94,19 @@ struct de2_fmt_info {
 	u32 de2_fmt;
 };
 
+/**
+ * struct sun8i_mixer_cfg - mixer HW configuration
+ * @vi_num: number of VI channels
+ * @ui_num: number of UI channels
+ * @scaler_mask: bitmask which tells which channel supports scaling
+ *	First, scaler supports for VI channels is defined and after that, scaler
+ *	support for UI channels. For example, if mixer has 2 VI channels without
+ *	scaler and 2 UI channels with scaler, bitmask would be 0xC.
+ */
 struct sun8i_mixer_cfg {
 	int		vi_num;
 	int		ui_num;
+	int		scaler_mask;
 };
 
 struct sun8i_mixer {