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Wed, 27 Jan 2021 20:39:24 -0800 Received: from MTKMBS31N2.mediatek.inc (172.27.4.87) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 27 Jan 2021 20:39:22 -0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by MTKMBS31N2.mediatek.inc (172.27.4.87) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 28 Jan 2021 12:39:13 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 28 Jan 2021 12:39:13 +0800 Message-ID: <1611808753.19104.2.camel@mtksdaap41> Subject: Re: [PATCH v10 4/9] drm/mediatek: generalize mtk_dither_set() function From: CK Hu To: Hsin-Yi Wang Date: Thu, 28 Jan 2021 12:39:13 +0800 In-Reply-To: <20210127045422.2418917-5-hsinyi@chromium.org> References: <20210127045422.2418917-1-hsinyi@chromium.org> <20210127045422.2418917-5-hsinyi@chromium.org> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: 2CBAB08F8393E6009EF02E9C4BAE18DDBE683539EF00AE0CC0DA31C1C09ABFBB2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210127_233928_228271_09942906 X-CRM114-Status: GOOD ( 20.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Philipp Zabel , David Airlie , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Yongqiang Niu , Project_Global_Chrome_Upstream_Group@mediatek.com, linux-mediatek@lists.infradead.org, Daniel Vetter , Matthias Brugger , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Hsin-Yi: On Wed, 2021-01-27 at 12:54 +0800, Hsin-Yi Wang wrote: > There may be data structure other than mtk_ddp_comp_dev that would call > mtk_dither_set(), so use regs as parameter instead of device. You does not change the interface of mtk_dither_set(). You move the common part in mtk_dither_set() to a new function which could be called by another caller. Regards, CK. > > Signed-off-by: Hsin-Yi Wang > --- > drivers/gpu/drm/mediatek/mtk_disp_drv.h | 4 ++++ > drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 25 +++++++++++++-------- > 2 files changed, 20 insertions(+), 9 deletions(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h > index 46d199b7b4a29..c50d5fc9fd349 100644 > --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h > +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h > @@ -17,6 +17,10 @@ void mtk_color_config(struct device *dev, unsigned int w, > unsigned int bpc, struct cmdq_pkt *cmdq_pkt); > void mtk_color_start(struct device *dev); > > +void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg, > + unsigned int bpc, unsigned int CFG, > + struct cmdq_pkt *cmdq_pkt); > + > void mtk_dpi_start(struct device *dev); > void mtk_dpi_stop(struct device *dev); > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c > index 7b5293429426d..53d25823a37cc 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c > @@ -151,33 +151,40 @@ static void mtk_ddp_clk_disable(struct device *dev) > clk_disable_unprepare(priv->clk); > } > > -static void mtk_dither_set(struct device *dev, unsigned int bpc, > - unsigned int CFG, struct cmdq_pkt *cmdq_pkt) > -{ > - struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); > > +void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg, > + unsigned int bpc, unsigned int CFG, struct cmdq_pkt *cmdq_pkt) > +{ > /* If bpc equal to 0, the dithering function didn't be enabled */ > if (bpc == 0) > return; > > if (bpc >= MTK_MIN_BPC) { > - mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_DITHER_5); > - mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_DITHER_7); > + mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_5); > + mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_7); > mtk_ddp_write(cmdq_pkt, > DITHER_LSB_ERR_SHIFT_R(MTK_MAX_BPC - bpc) | > DITHER_ADD_LSHIFT_R(MTK_MAX_BPC - bpc) | > DITHER_NEW_BIT_MODE, > - &priv->cmdq_reg, priv->regs, DISP_DITHER_15); > + cmdq_reg, regs, DISP_DITHER_15); > mtk_ddp_write(cmdq_pkt, > DITHER_LSB_ERR_SHIFT_B(MTK_MAX_BPC - bpc) | > DITHER_ADD_LSHIFT_B(MTK_MAX_BPC - bpc) | > DITHER_LSB_ERR_SHIFT_G(MTK_MAX_BPC - bpc) | > DITHER_ADD_LSHIFT_G(MTK_MAX_BPC - bpc), > - &priv->cmdq_reg, priv->regs, DISP_DITHER_16); > - mtk_ddp_write(cmdq_pkt, DISP_DITHERING, &priv->cmdq_reg, priv->regs, CFG); > + cmdq_reg, regs, DISP_DITHER_16); > + mtk_ddp_write(cmdq_pkt, DISP_DITHERING, cmdq_reg, regs, CFG); > } > } > > +static void mtk_dither_set(struct device *dev, unsigned int bpc, > + unsigned int CFG, struct cmdq_pkt *cmdq_pkt) > +{ > + struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); > + > + mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, CFG, cmdq_pkt); > +} > + > static void mtk_od_config(struct device *dev, unsigned int w, > unsigned int h, unsigned int vrefresh, > unsigned int bpc, struct cmdq_pkt *cmdq_pkt) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel