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Thu, 28 Jan 2021 03:23:34 -0800 (PST) From: Hsin-Yi Wang To: CK Hu , Philipp Zabel , Matthias Brugger Subject: [PATCH v12 6/8] drm/mediatek: enable dither function Date: Thu, 28 Jan 2021 19:23:12 +0800 Message-Id: <20210128112314.1304160-7-hsinyi@chromium.org> X-Mailer: git-send-email 2.30.0.280.ga3ce27912f-goog In-Reply-To: <20210128112314.1304160-1-hsinyi@chromium.org> References: <20210128112314.1304160-1-hsinyi@chromium.org> MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 28 Jan 2021 19:44:35 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Yongqiang Niu , David Airlie , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Yongqiang Niu for 5 or 6 bpc panel, we need enable dither function to improve the display quality Signed-off-by: Yongqiang Niu Signed-off-by: Hsin-Yi Wang --- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index ac2cb25620357..6c8f246380a74 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -53,6 +53,7 @@ #define DITHER_EN BIT(0) #define DISP_DITHER_CFG 0x0020 #define DITHER_RELAY_MODE BIT(0) +#define DITHER_ENGINE_EN BIT(1) #define DISP_DITHER_SIZE 0x0030 #define LUT_10BIT_MASK 0x03ff @@ -314,9 +315,19 @@ static void mtk_dither_config(struct device *dev, unsigned int w, unsigned int bpc, struct cmdq_pkt *cmdq_pkt) { struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); + bool enable = (bpc == 5 || bpc == 6); - mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, DISP_DITHER_SIZE); - mtk_ddp_write(cmdq_pkt, DITHER_RELAY_MODE, &priv->cmdq_reg, priv->regs, DISP_DITHER_CFG); + if (enable) { + mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, + DISP_DITHER_CFG, DITHER_ENGINE_EN, + cmdq_pkt); + } else { + mtk_ddp_write(cmdq_pkt, DITHER_RELAY_MODE, &priv->cmdq_reg, + priv->regs, DISP_DITHER_CFG); + } + + mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, + DISP_DITHER_SIZE); } static void mtk_dither_start(struct device *dev) -- 2.30.0.280.ga3ce27912f-goog _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel