linux-kernel - [PATCH 31/36] drm/stm: use bpp instead of cpp for drm_format

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Message-Id: <1569243230-183568-1-git-send-email-hjc@rock-chips.com>
Date:   Mon, 23 Sep 2019 20:53:45 +0800
From:   Sandy Huang <hjc@...k-chips.com>
To:     dri-devel@...ts.freedesktop.org,
        Yannick Fertre <yannick.fertre@...com>,
        Philippe Cornu <philippe.cornu@...com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Vincent Abriou <vincent.abriou@...com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>
Cc:     hjc@...k-chips.com, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 31/36] drm/stm: use bpp instead of cpp for drm_format_info

cpp[BytePerPlane] can't describe the 10bit data format correctly,
So we use bpp[BitPerPlane] to instead cpp.

Signed-off-by: Sandy Huang <hjc@...k-chips.com>
---
 drivers/gpu/drm/stm/ltdc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 5b512989..527c735 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -817,7 +817,7 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
 
 	/* Configures the color frame buffer pitch in bytes & line length */
 	pitch_in_bytes = fb->pitches[0];
-	line_length = fb->format->cpp[0] *
+	line_length = fb->format->bpp[0] / 8 *
 		      (x1 - x0 + 1) + (ldev->caps.bus_width >> 3) - 1;
 	val = ((pitch_in_bytes << 16) | line_length);
 	reg_update_bits(ldev->regs, LTDC_L1CFBLR + lofs,
-- 
2.7.4