From nobody Sat Feb 7 03:23:16 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68E10C7EE23 for ; Mon, 12 Jun 2023 09:06:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233634AbjFLJGF (ORCPT ); Mon, 12 Jun 2023 05:06:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60260 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233006AbjFLJFZ (ORCPT ); Mon, 12 Jun 2023 05:05:25 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8DC633C12 for ; Mon, 12 Jun 2023 02:02:06 -0700 (PDT) Received: from IcarusMOD.eternityproject.eu (unknown [IPv6:2001:b07:2ed:14ed:c5f8:7372:f042:90a2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 8F67F6606E8A; Mon, 12 Jun 2023 10:02:04 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1686560525; bh=uez5eoRMhsgOOXOBI1JFSa4MIzsNoJQ/JLxh/1eaBjc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Kf1in0PVgibpp6kMU+DotdjTYPuyGy1jnjIQCqtDyGf2mn4jBFeQNhGTrUfWCWYZA QBe0nCeoxwROcl1h2SDuK0v8g/ZMx3MgnmHR1xk1h2h0To8lSo3eOITSZOcbgGRUrO LYY+4v3Dn1KFs88zX34klHkU2qho4Jo/F7WlHljbfJnsEWMEi8tvnwxxWyZlE5bgww XfqJT7YSZng5DpMddJvlfYEy2QZTCBmP65n14tlf9lMF54j+FeQFjEz94kWkZEPTJo dFVm8y2kSPaEjPjLftlazocew7FAXFIyRERFMl5N7rG//arSbB3G8EdtTnGE/ZI2Mo RMM3yNmxquaQA== From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wenst@chromium.org, kernel@collabora.com, "Jason-JH . Lin" Subject: [PATCH v6 03/11] drm/mediatek: gamma: Support SoC specific LUT size Date: Mon, 12 Jun 2023 11:01:49 +0200 Message-Id: <20230612090157.68205-4-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230612090157.68205-1-angelogioacchino.delregno@collabora.com> References: <20230612090157.68205-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Newer SoCs support a bigger Gamma LUT table: wire up a callback to retrieve the correct LUT size for each different Gamma IP. Co-developed-by: Jason-JH.Lin Signed-off-by: Jason-JH.Lin [Angelo: Rewritten commit message/description + porting] Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Jason-JH.Lin --- drivers/gpu/drm/mediatek/mtk_disp_drv.h | 1 + drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 25 ++++++++++++++++++--- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++-- drivers/gpu/drm/mediatek/mtk_drm_crtc.h | 1 - drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 1 + drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 9 ++++++++ 6 files changed, 35 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/medi= atek/mtk_disp_drv.h index 75045932353e..e554b19f4830 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h @@ -53,6 +53,7 @@ void mtk_gamma_clk_disable(struct device *dev); void mtk_gamma_config(struct device *dev, unsigned int w, unsigned int h, unsigned int vrefresh, unsigned int bpc, struct cmdq_pkt *cmdq_pkt); +unsigned int mtk_gamma_get_lut_size(struct device *dev); void mtk_gamma_set(struct device *dev, struct drm_crtc_state *state); void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct d= rm_crtc_state *state); void mtk_gamma_start(struct device *dev); diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/me= diatek/mtk_disp_gamma.c index ce6f2499b891..b25ba209e7a4 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c @@ -25,10 +25,12 @@ #define DISP_GAMMA_LUT 0x0700 =20 #define LUT_10BIT_MASK 0x03ff +#define LUT_SIZE_DEFAULT 512 =20 struct mtk_disp_gamma_data { bool has_dither; bool lut_diff; + u16 lut_size; }; =20 /* @@ -55,6 +57,17 @@ void mtk_gamma_clk_disable(struct device *dev) clk_disable_unprepare(gamma->clk); } =20 +unsigned int mtk_gamma_get_lut_size(struct device *dev) +{ + struct mtk_disp_gamma *gamma =3D dev_get_drvdata(dev); + unsigned int lut_size =3D LUT_SIZE_DEFAULT; + + if (gamma && gamma->data) + lut_size =3D gamma->data->lut_size; + + return lut_size; +} + void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct d= rm_crtc_state *state) { struct mtk_disp_gamma *gamma =3D dev_get_drvdata(dev); @@ -62,6 +75,7 @@ void mtk_gamma_set_common(struct device *dev, void __iome= m *regs, struct drm_crt struct drm_color_lut *lut; void __iomem *lut_base; bool lut_diff; + u16 lut_size; u32 word; u32 diff[3] =3D {0}; =20 @@ -69,17 +83,20 @@ void mtk_gamma_set_common(struct device *dev, void __io= mem *regs, struct drm_crt if (!state->gamma_lut) return; =20 - if (gamma && gamma->data) + if (gamma && gamma->data) { lut_diff =3D gamma->data->lut_diff; - else + lut_size =3D gamma->data->lut_size; + } else { lut_diff =3D false; + lut_size =3D LUT_SIZE_DEFAULT; + } =20 reg =3D readl(regs + DISP_GAMMA_CFG); reg =3D reg | GAMMA_LUT_EN; writel(reg, regs + DISP_GAMMA_CFG); lut_base =3D regs + DISP_GAMMA_LUT; lut =3D (struct drm_color_lut *)state->gamma_lut->data; - for (i =3D 0; i < MTK_LUT_SIZE; i++) { + for (i =3D 0; i < lut_size; i++) { if (!lut_diff || (i % 2 =3D=3D 0)) { word =3D (((lut[i].red >> 6) & LUT_10BIT_MASK) << 20) + (((lut[i].green >> 6) & LUT_10BIT_MASK) << 10) + @@ -196,10 +213,12 @@ static int mtk_disp_gamma_remove(struct platform_devi= ce *pdev) =20 static const struct mtk_disp_gamma_data mt8173_gamma_driver_data =3D { .has_dither =3D true, + .lut_size =3D 512, }; =20 static const struct mtk_disp_gamma_data mt8183_gamma_driver_data =3D { .lut_diff =3D true, + .lut_size =3D 512, }; =20 static const struct of_device_id mtk_disp_gamma_driver_dt_match[] =3D { diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/medi= atek/mtk_drm_crtc.c index d40142842f85..0df62b076f49 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -958,8 +958,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, mtk_crtc->ddp_comp[i] =3D comp; =20 if (comp->funcs) { - if (comp->funcs->gamma_set) - gamma_lut_size =3D MTK_LUT_SIZE; + if (comp->funcs->gamma_set && comp->funcs->gamma_get_lut_size) + gamma_lut_size =3D mtk_ddp_gamma_get_lut_size(comp); =20 if (comp->funcs->ctm_set) has_ctm =3D true; diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/medi= atek/mtk_drm_crtc.h index 3e9046993d09..b2e50292e57d 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h @@ -10,7 +10,6 @@ #include "mtk_drm_ddp_comp.h" #include "mtk_drm_plane.h" =20 -#define MTK_LUT_SIZE 512 #define MTK_MAX_BPC 10 #define MTK_MIN_BPC 3 =20 diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/= mediatek/mtk_drm_ddp_comp.c index f114da4d36a9..c77af2e4000f 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -322,6 +322,7 @@ static const struct mtk_ddp_comp_funcs ddp_dsi =3D { static const struct mtk_ddp_comp_funcs ddp_gamma =3D { .clk_enable =3D mtk_gamma_clk_enable, .clk_disable =3D mtk_gamma_clk_disable, + .gamma_get_lut_size =3D mtk_gamma_get_lut_size, .gamma_set =3D mtk_gamma_set, .config =3D mtk_gamma_config, .start =3D mtk_gamma_start, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/= mediatek/mtk_drm_ddp_comp.h index febcaeef16a1..c1355960e195 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -67,6 +67,7 @@ struct mtk_ddp_comp_funcs { void (*layer_config)(struct device *dev, unsigned int idx, struct mtk_plane_state *state, struct cmdq_pkt *cmdq_pkt); + unsigned int (*gamma_get_lut_size)(struct device *dev); void (*gamma_set)(struct device *dev, struct drm_crtc_state *state); void (*bgclr_in_on)(struct device *dev); @@ -186,6 +187,14 @@ static inline void mtk_ddp_comp_layer_config(struct mt= k_ddp_comp *comp, comp->funcs->layer_config(comp->dev, idx, state, cmdq_pkt); } =20 +static inline unsigned int mtk_ddp_gamma_get_lut_size(struct mtk_ddp_comp = *comp) +{ + if (comp->funcs && comp->funcs->gamma_get_lut_size) + return comp->funcs->gamma_get_lut_size(comp->dev); + + return 0; +} + static inline void mtk_ddp_gamma_set(struct mtk_ddp_comp *comp, struct drm_crtc_state *state) { --=20 2.40.1