linux-kernel - [PATCH 02/13] drm/kms/mode/bridge-tc358767: using helper func drm_display_mode_to_videomode for calculating timing parameters

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Message-Id: <58baec838d69fd445c2189be68f71e74024e730f.1525087679.git.satendra.t@samsung.com>
Date:   Thu,  3 May 2018 14:07:17 +0530
From:   Satendra Singh Thakur <satendra.t@...sung.com>
To:     Archit Taneja <architt@...eaurora.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     Satendra Singh Thakur <satendra.t@...sung.com>,
        Madhur Verma <madhur.verma@...sung.com>,
        Hemanshu Srivastava <hemanshu.s@...sung.com>
Subject: [PATCH 02/13] drm/kms/mode/bridge-tc358767: using helper func
 drm_display_mode_to_videomode for calculating timing parameters

To avoid duplicate logic for timing parameters

Signed-off-by: Satendra Singh Thakur <satendra.t@...sung.com>
Cc: Madhur Verma <madhur.verma@...sung.com>
Cc: Hemanshu Srivastava <hemanshu.s@...sung.com>
---
 drivers/gpu/drm/bridge/tc358767.c | 42 ++++++++++++++++++---------------------
 1 file changed, 19 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 08ab7d6a..d90ac27 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -39,6 +39,7 @@
 #include <drm/drm_edid.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
+#include <video/videomode.h>
 
 /* Registers */
 
@@ -653,14 +654,9 @@ static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode)
 	int ret;
 	int vid_sync_dly;
 	int max_tu_symbol;
+	struct videomode vm;
 
-	int left_margin = mode->htotal - mode->hsync_end;
-	int right_margin = mode->hsync_start - mode->hdisplay;
-	int hsync_len = mode->hsync_end - mode->hsync_start;
-	int upper_margin = mode->vtotal - mode->vsync_end;
-	int lower_margin = mode->vsync_start - mode->vdisplay;
-	int vsync_len = mode->vsync_end - mode->vsync_start;
-
+	drm_display_mode_to_videomode(mode, &vm);
 	/*
 	 * Recommended maximum number of symbols transferred in a transfer unit:
 	 * DIV_ROUND_UP((input active video bandwidth in bytes) * tu_size,
@@ -670,11 +666,11 @@ static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode)
 	max_tu_symbol = TU_SIZE_RECOMMENDED - 1;
 
 	dev_dbg(tc->dev, "set mode %dx%d\n",
-		mode->hdisplay, mode->vdisplay);
+		vm.hactive, vm.vactive);
 	dev_dbg(tc->dev, "H margin %d,%d sync %d\n",
-		left_margin, right_margin, hsync_len);
+		vm.hback_porch, vm.hfront_porch, vm.hsync_len);
 	dev_dbg(tc->dev, "V margin %d,%d sync %d\n",
-		upper_margin, lower_margin, vsync_len);
+		vm.vback_porch, vm.vfront_porch, vm.vsync_len);
 	dev_dbg(tc->dev, "total: %dx%d\n", mode->htotal, mode->vtotal);
 
 
@@ -686,14 +682,14 @@ static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode)
 	 */
 	tc_write(VPCTRL0, (0 << 20) /* VSDELAY */ |
 		 OPXLFMT_RGB888 | FRMSYNC_DISABLED | MSF_DISABLED);
-	tc_write(HTIM01, (ALIGN(left_margin, 2) << 16) | /* H back porch */
-			 (ALIGN(hsync_len, 2) << 0));	 /* Hsync */
-	tc_write(HTIM02, (ALIGN(right_margin, 2) << 16) |  /* H front porch */
-			 (ALIGN(mode->hdisplay, 2) << 0)); /* width */
-	tc_write(VTIM01, (upper_margin << 16) |		/* V back porch */
-			 (vsync_len << 0));		/* Vsync */
-	tc_write(VTIM02, (lower_margin << 16) |		/* V front porch */
-			 (mode->vdisplay << 0));	/* height */
+	tc_write(HTIM01, (ALIGN(vm.hback_porch, 2) << 16) | /* H back porch */
+			 (ALIGN(vm.hsync_len, 2) << 0));	 /* Hsync */
+	tc_write(HTIM02, (ALIGN(vm.hfront_porch, 2) << 16) | /* H front porch */
+			 (ALIGN(vm.hactive, 2) << 0)); /* width */
+	tc_write(VTIM01, (vm.vback_porch << 16) |	/* V back porch */
+			 (vm.vsync_len << 0));		/* Vsync */
+	tc_write(VTIM02, (vm.vfront_porch << 16) |	/* V front porch */
+			 (vm.vactive << 0));	/* height */
 	tc_write(VFUEN0, VFUEN);		/* update settings */
 
 	/* Test pattern settings */
@@ -706,7 +702,7 @@ static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode)
 		 0);
 
 	/* DP Main Stream Attributes */
-	vid_sync_dly = hsync_len + left_margin + mode->hdisplay;
+	vid_sync_dly = vm.hsync_len + vm.hback_porch + vm.hactive;
 	tc_write(DP0_VIDSYNCDELAY,
 		 (max_tu_symbol << 16) |	/* thresh_dly */
 		 (vid_sync_dly << 0));
@@ -714,12 +710,12 @@ static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode)
 	tc_write(DP0_TOTALVAL, (mode->vtotal << 16) | (mode->htotal));
 
 	tc_write(DP0_STARTVAL,
-		 ((upper_margin + vsync_len) << 16) |
-		 ((left_margin + hsync_len) << 0));
+		 ((vm.vback_porch + vm.vsync_len) << 16) |
+		 ((vm.hback_porch + vm.hsync_len) << 0));
 
-	tc_write(DP0_ACTIVEVAL, (mode->vdisplay << 16) | (mode->hdisplay));
+	tc_write(DP0_ACTIVEVAL, (vm.vactive << 16) | (vm.hactive));
 
-	tc_write(DP0_SYNCVAL, (vsync_len << 16) | (hsync_len << 0));
+	tc_write(DP0_SYNCVAL, (vm.vsync_len << 16) | (vm.hsync_len << 0));
 
 	tc_write(DPIPXLFMT, VS_POL_ACTIVE_LOW | HS_POL_ACTIVE_LOW |
 		 DE_POL_ACTIVE_HIGH | SUB_CFG_TYPE_CONFIG1 | DPI_BPP_RGB888);
-- 
2.7.4