From patchwork Wed Jan 31 11:34:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13539326 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 63BA8C47DB3 for ; Wed, 31 Jan 2024 11:35:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DJ1b1O5LsHWhqJQCZITpNMX7IAaYf7aMkTwuWKxALe8=; b=3rLJf6DjgsqOzi ZtdHbsIHuFYaZHnJrjP4MIxkvOi7c3ipbU3qs1qTjJd7JwP6qOz7L6Gz720PRd6meyMov2oPt6DJo cOKg4z0HZQUfjY08P68IDI8gcxy0gKLtXSKqbWqSotl+b0dzHlaliayNnunAPDEyrPHXTidiO6f36 h5wkwJt2366bi+P8g7nUYtMiRQbO2CjCMo6aEGoGVKl1sSf6zFzdj3IZSIkkyR9SeG2wpDMnObpQD khQD466iq7VpbcUaH6rmaDWQpuV6A2FwLqLG+LzoDcMenz5bn60S/+9vxAZcADq95bNTnKVaUwGob To9YJDDdMcyOEczcrbsw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rV8s7-000000038Tg-0I7W; Wed, 31 Jan 2024 11:35:15 +0000 Received: from madrid.collaboradmins.com ([2a00:1098:ed:100::25]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rV8rc-0000000389Q-1ulM; Wed, 31 Jan 2024 11:34:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1706700881; bh=T7wyLM2XaOr0LZopSINK1iR5VVf323V2jZ2xWU3QUPI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pZ4KNsSBKFixh/3NFT+/dPC3BceUxhRWuFAeRVrfK63AmErPDPjb1H0VsB+4yLelY C346QSdfY1nf6BvgkOQvGKWFrpN0HRfj0Vjd9zHwwGIO59Ic5YvPWnGbSgDvHC7L90 BmvVZEuL/OLCEv4Z2NzcC1yCQoiCDkFTSXQHZrhcgpjkQeTiZKCBSZvuP2Ts7qH6MW 6EO/9z2/vuoolTRkGSKCLYmGsKeakG7pHb8ORXrrzxE5eBWUihUBziYlj9PECKmdNr 5+j2k8P/qZevQ8MY3O4rE9fywGUZSAp3CZbBosSXhSNduShiwV/sPrAnu18CQ9d4/L ZlOiuFUOzYW5Q== Received: from IcarusMOD.eternityproject.eu (cola.collaboradmins.com [195.201.22.229]) (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 madrid.collaboradmins.com (Postfix) with ESMTPSA id 129AF3781FE1; Wed, 31 Jan 2024 11:34:41 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: fshao@chromium.org, 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, kernel@collabora.com Subject: [PATCH v3 1/7] drm/mediatek: dsi: Use GENMASK() for register mask definitions Date: Wed, 31 Jan 2024 12:34:28 +0100 Message-ID: <20240131113434.241929-2-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> References: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240131_033444_648897_4A6E6C82 X-CRM114-Status: UNSURE ( 9.14 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Change magic numerical masks with usage of the GENMASK() macro to improve readability. While at it, also fix the DSI_PS_SEL mask to include all bits instead of just a subset of them. This commit brings no functional changes. Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dsi.c | 45 +++++++++++++++--------------- 1 file changed, 23 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index a2fdfc8ddb15..3b7392c03b4d 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -58,18 +58,18 @@ #define DSI_TXRX_CTRL 0x18 #define VC_NUM BIT(1) -#define LANE_NUM (0xf << 2) +#define LANE_NUM GENMASK(5, 2) #define DIS_EOT BIT(6) #define NULL_EN BIT(7) #define TE_FREERUN BIT(8) #define EXT_TE_EN BIT(9) #define EXT_TE_EDGE BIT(10) -#define MAX_RTN_SIZE (0xf << 12) +#define MAX_RTN_SIZE GENMASK(15, 12) #define HSTX_CKLP_EN BIT(16) #define DSI_PSCTRL 0x1c -#define DSI_PS_WC 0x3fff -#define DSI_PS_SEL (3 << 16) +#define DSI_PS_WC GENMASK(14, 0) +#define DSI_PS_SEL GENMASK(19, 16) #define PACKED_PS_16BIT_RGB565 (0 << 16) #define LOOSELY_PS_18BIT_RGB666 (1 << 16) #define PACKED_PS_18BIT_RGB666 (2 << 16) @@ -109,26 +109,26 @@ #define LD0_WAKEUP_EN BIT(2) #define DSI_PHY_TIMECON0 0x110 -#define LPX (0xff << 0) -#define HS_PREP (0xff << 8) -#define HS_ZERO (0xff << 16) -#define HS_TRAIL (0xff << 24) +#define LPX GENMASK(7, 0) +#define HS_PREP GENMASK(15, 8) +#define HS_ZERO GENMASK(23, 16) +#define HS_TRAIL GENMASK(31, 24) #define DSI_PHY_TIMECON1 0x114 -#define TA_GO (0xff << 0) -#define TA_SURE (0xff << 8) -#define TA_GET (0xff << 16) -#define DA_HS_EXIT (0xff << 24) +#define TA_GO GENMASK(7, 0) +#define TA_SURE GENMASK(15, 8) +#define TA_GET GENMASK(23, 16) +#define DA_HS_EXIT GENMASK(31, 24) #define DSI_PHY_TIMECON2 0x118 -#define CONT_DET (0xff << 0) -#define CLK_ZERO (0xff << 16) -#define CLK_TRAIL (0xff << 24) +#define CONT_DET GENMASK(7, 0) +#define CLK_ZERO GENMASK(23, 16) +#define CLK_TRAIL GENMASK(31, 24) #define DSI_PHY_TIMECON3 0x11c -#define CLK_HS_PREP (0xff << 0) -#define CLK_HS_POST (0xff << 8) -#define CLK_HS_EXIT (0xff << 16) +#define CLK_HS_PREP GENMASK(7, 0) +#define CLK_HS_POST GENMASK(15, 8) +#define CLK_HS_EXIT GENMASK(23, 16) #define DSI_VM_CMD_CON 0x130 #define VM_CMD_EN BIT(0) @@ -138,13 +138,14 @@ #define FORCE_COMMIT BIT(0) #define BYPASS_SHADOW BIT(1) -#define CONFIG (0xff << 0) +/* CMDQ related bits */ +#define CONFIG GENMASK(7, 0) #define SHORT_PACKET 0 #define LONG_PACKET 2 #define BTA BIT(2) -#define DATA_ID (0xff << 8) -#define DATA_0 (0xff << 16) -#define DATA_1 (0xff << 24) +#define DATA_ID GENMASK(15, 8) +#define DATA_0 GENMASK(23, 16) +#define DATA_1 GENMASK(31, 24) #define NS_TO_CYCLE(n, c) ((n) / (c) + (((n) % (c)) ? 1 : 0)) From patchwork Wed Jan 31 11:34:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13539323 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A0FD8C47DB3 for ; Wed, 31 Jan 2024 11:34:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1ViDHIhnmUb0NbAN2kXRjk1pzu3MO0dDtzW7XPBOJhQ=; b=lehyX9iLpG85Ud YESYFRc7hNDe6+8qKu08ev81DW/M5JVEC9q5cO4O9Sb22+RN/Ly5m9S/Xvmqr6/l4qgZTMbvBRNeS fRjP+NBKJCkStDg4kXRO0TlVU2bkzEbx904wbkqIzFNw4OfSwghFfvQYy8CWmRtk1kUpDZyDOVX5P lmu9jJOTaq/VOYxsdlp4tvgG/MwSwPHYMAXgckUuNOf5n4vkTdDEfoacI3V26rXxzGZUMyFoHX8CF /el2FgYq0nJ6bQ3jtZjGPOIFBu2WC3KQWQw1SW86KPiPHP5iffTPUsrSJPlFUxCfXmIq/O6feetgb 6swBThRnsnybwwkBAtyw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rV8rg-000000038CW-1ftX; Wed, 31 Jan 2024 11:34:48 +0000 Received: from madrid.collaboradmins.com ([46.235.227.194]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rV8rc-0000000389T-0CB2; Wed, 31 Jan 2024 11:34:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1706700882; bh=j/2ny5Y8DyyuhjfBUyl+Wn3ma9b5f2x2Zt+jtkjquuQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gxsDWFArIlHi4qwvZ6rZXoBdVYA2HN5umf1ZsoYTcohnu2NWTj+nD/Q2Z+KWy1B3P wt5N/5Z9tVsIwChL/ESE+yMp+Q3GIU24g0TOHlBaFKSK/uMtrtczbDtwXXCM/Qe5eS ByM1mXZKyKw+ikwKScQF7/vnGOpIf7KFA1QoqIwH/CFqx/+13jyWBToissFpOuPj2H mDvwkFB23vL5v1l8mJjyjvtUhNl/eB50kgQooiDEZpi/3ZrTqFxywrBtjbNgRIwDA8 1Wt2E/avFg8F215I1mCKItvbtJtjwmRoaoiOM4OMOlSo+pkOx93wv1yGP4LOXspBkb m4Ix63AF1wTsQ== Received: from IcarusMOD.eternityproject.eu (cola.collaboradmins.com [195.201.22.229]) (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 madrid.collaboradmins.com (Postfix) with ESMTPSA id 1008E3782067; Wed, 31 Jan 2024 11:34:42 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: fshao@chromium.org, 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, kernel@collabora.com Subject: [PATCH v3 2/7] drm/mediatek: dsi: Cleanup functions mtk_dsi_ps_control{_vact}() Date: Wed, 31 Jan 2024 12:34:29 +0100 Message-ID: <20240131113434.241929-3-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> References: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240131_033444_242368_62F6A6B8 X-CRM114-Status: GOOD ( 11.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Function mtk_dsi_ps_control() is a subset of mtk_dsi_ps_control_vact(): merge the two in one mtk_dsi_ps_control() function by adding one function parameter `config_vact` which, when true, writes the VACT related registers. Reviewed-by: Fei Shao Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dsi.c | 76 +++++++++--------------------- 1 file changed, 23 insertions(+), 53 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 3b7392c03b4d..8414ce73ce9f 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -351,40 +351,6 @@ static void mtk_dsi_set_vm_cmd(struct mtk_dsi *dsi) mtk_dsi_mask(dsi, DSI_VM_CMD_CON, TS_VFP_EN, TS_VFP_EN); } -static void mtk_dsi_ps_control_vact(struct mtk_dsi *dsi) -{ - struct videomode *vm = &dsi->vm; - u32 dsi_buf_bpp, ps_wc; - u32 ps_bpp_mode; - - if (dsi->format == MIPI_DSI_FMT_RGB565) - dsi_buf_bpp = 2; - else - dsi_buf_bpp = 3; - - ps_wc = vm->hactive * dsi_buf_bpp; - ps_bpp_mode = ps_wc; - - switch (dsi->format) { - case MIPI_DSI_FMT_RGB888: - ps_bpp_mode |= PACKED_PS_24BIT_RGB888; - break; - case MIPI_DSI_FMT_RGB666: - ps_bpp_mode |= PACKED_PS_18BIT_RGB666; - break; - case MIPI_DSI_FMT_RGB666_PACKED: - ps_bpp_mode |= LOOSELY_PS_18BIT_RGB666; - break; - case MIPI_DSI_FMT_RGB565: - ps_bpp_mode |= PACKED_PS_16BIT_RGB565; - break; - } - - writel(vm->vactive, dsi->regs + DSI_VACT_NL); - writel(ps_bpp_mode, dsi->regs + DSI_PSCTRL); - writel(ps_wc, dsi->regs + DSI_HSTX_CKL_WC); -} - static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi) { u32 tmp_reg; @@ -416,36 +382,40 @@ static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi) writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL); } -static void mtk_dsi_ps_control(struct mtk_dsi *dsi) +static void mtk_dsi_ps_control(struct mtk_dsi *dsi, bool config_vact) { - u32 dsi_tmp_buf_bpp; - u32 tmp_reg; + struct videomode *vm = &dsi->vm; + u32 dsi_buf_bpp, ps_wc; + u32 ps_bpp_mode; + + if (dsi->format == MIPI_DSI_FMT_RGB565) + dsi_buf_bpp = 2; + else + dsi_buf_bpp = 3; + + ps_wc = vm->hactive * dsi_buf_bpp; + ps_bpp_mode = ps_wc; switch (dsi->format) { case MIPI_DSI_FMT_RGB888: - tmp_reg = PACKED_PS_24BIT_RGB888; - dsi_tmp_buf_bpp = 3; + ps_bpp_mode |= PACKED_PS_24BIT_RGB888; break; case MIPI_DSI_FMT_RGB666: - tmp_reg = LOOSELY_PS_18BIT_RGB666; - dsi_tmp_buf_bpp = 3; + ps_bpp_mode |= PACKED_PS_18BIT_RGB666; break; case MIPI_DSI_FMT_RGB666_PACKED: - tmp_reg = PACKED_PS_18BIT_RGB666; - dsi_tmp_buf_bpp = 3; + ps_bpp_mode |= LOOSELY_PS_18BIT_RGB666; break; case MIPI_DSI_FMT_RGB565: - tmp_reg = PACKED_PS_16BIT_RGB565; - dsi_tmp_buf_bpp = 2; - break; - default: - tmp_reg = PACKED_PS_24BIT_RGB888; - dsi_tmp_buf_bpp = 3; + ps_bpp_mode |= PACKED_PS_16BIT_RGB565; break; } - tmp_reg += dsi->vm.hactive * dsi_tmp_buf_bpp & DSI_PS_WC; - writel(tmp_reg, dsi->regs + DSI_PSCTRL); + if (config_vact) { + writel(vm->vactive, dsi->regs + DSI_VACT_NL); + writel(ps_wc, dsi->regs + DSI_HSTX_CKL_WC); + } + writel(ps_bpp_mode, dsi->regs + DSI_PSCTRL); } static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) @@ -521,7 +491,7 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC); writel(horizontal_frontporch_byte, dsi->regs + DSI_HFP_WC); - mtk_dsi_ps_control(dsi); + mtk_dsi_ps_control(dsi, false); } static void mtk_dsi_start(struct mtk_dsi *dsi) @@ -666,7 +636,7 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi) mtk_dsi_reset_engine(dsi); mtk_dsi_phy_timconfig(dsi); - mtk_dsi_ps_control_vact(dsi); + mtk_dsi_ps_control(dsi, true); mtk_dsi_set_vm_cmd(dsi); mtk_dsi_config_vdo_timing(dsi); mtk_dsi_set_interrupt_enable(dsi); From patchwork Wed Jan 31 11:34:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13539325 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 95A24C47DB3 for ; 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Wed, 31 Jan 2024 11:34:43 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: fshao@chromium.org, 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, kernel@collabora.com Subject: [PATCH v3 3/7] drm/mediatek: dsi: Use bitfield macros where useful Date: Wed, 31 Jan 2024 12:34:30 +0100 Message-ID: <20240131113434.241929-4-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> References: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240131_033445_362449_423A8DAE X-CRM114-Status: GOOD ( 14.83 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Instead of open coding bitshifting for various register fields, use the bitfield macro FIELD_PREP(): this allows to enhance the human readability, decrease likeliness of mistakes (and register field overflowing) and also to simplify the code. The latter is especially seen in mtk_dsi_rxtx_control(), where it was possible to change a switch to a short for loop and to also remove the need to check for maximum DSI lanes == 4 thanks to the FIELD_PREP macro masking the value. While at it, also add the missing DA_HS_SYNC bitmask, used in mtk_dsi_phy_timconfig(). Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dsi.c | 97 ++++++++++++++++-------------- 1 file changed, 52 insertions(+), 45 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 8414ce73ce9f..cba63de5092d 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -3,6 +3,7 @@ * Copyright (c) 2015 MediaTek Inc. */ +#include #include #include #include @@ -70,16 +71,19 @@ #define DSI_PSCTRL 0x1c #define DSI_PS_WC GENMASK(14, 0) #define DSI_PS_SEL GENMASK(19, 16) -#define PACKED_PS_16BIT_RGB565 (0 << 16) -#define LOOSELY_PS_18BIT_RGB666 (1 << 16) -#define PACKED_PS_18BIT_RGB666 (2 << 16) -#define PACKED_PS_24BIT_RGB888 (3 << 16) +#define PACKED_PS_16BIT_RGB565 0 +#define LOOSELY_PS_18BIT_RGB666 1 +#define PACKED_PS_18BIT_RGB666 2 +#define PACKED_PS_24BIT_RGB888 3 #define DSI_VSA_NL 0x20 #define DSI_VBP_NL 0x24 #define DSI_VFP_NL 0x28 #define DSI_VACT_NL 0x2C +#define VACT_NL GENMASK(14, 0) #define DSI_SIZE_CON 0x38 +#define DSI_HEIGHT GENMASK(30, 16) +#define DSI_WIDTH GENMASK(14, 0) #define DSI_HSA_WC 0x50 #define DSI_HBP_WC 0x54 #define DSI_HFP_WC 0x58 @@ -122,6 +126,7 @@ #define DSI_PHY_TIMECON2 0x118 #define CONT_DET GENMASK(7, 0) +#define DA_HS_SYNC GENMASK(15, 8) #define CLK_ZERO GENMASK(23, 16) #define CLK_TRAIL GENMASK(31, 24) @@ -253,14 +258,23 @@ static void mtk_dsi_phy_timconfig(struct mtk_dsi *dsi) timing->clk_hs_zero = timing->clk_hs_trail * 4; timing->clk_hs_exit = 2 * timing->clk_hs_trail; - timcon0 = timing->lpx | timing->da_hs_prepare << 8 | - timing->da_hs_zero << 16 | timing->da_hs_trail << 24; - timcon1 = timing->ta_go | timing->ta_sure << 8 | - timing->ta_get << 16 | timing->da_hs_exit << 24; - timcon2 = 1 << 8 | timing->clk_hs_zero << 16 | - timing->clk_hs_trail << 24; - timcon3 = timing->clk_hs_prepare | timing->clk_hs_post << 8 | - timing->clk_hs_exit << 16; + timcon0 = FIELD_PREP(LPX, timing->lpx) | + FIELD_PREP(HS_PREP, timing->da_hs_prepare) | + FIELD_PREP(HS_ZERO, timing->da_hs_zero) | + FIELD_PREP(HS_TRAIL, timing->da_hs_trail); + + timcon1 = FIELD_PREP(TA_GO, timing->ta_go) | + FIELD_PREP(TA_SURE, timing->ta_sure) | + FIELD_PREP(TA_GET, timing->ta_get) | + FIELD_PREP(DA_HS_EXIT, timing->da_hs_exit); + + timcon2 = FIELD_PREP(DA_HS_SYNC, 1) | + FIELD_PREP(CLK_ZERO, timing->clk_hs_zero) | + FIELD_PREP(CLK_TRAIL, timing->clk_hs_trail); + + timcon3 = FIELD_PREP(CLK_HS_PREP, timing->clk_hs_prepare) | + FIELD_PREP(CLK_HS_POST, timing->clk_hs_post) | + FIELD_PREP(CLK_HS_EXIT, timing->clk_hs_exit); writel(timcon0, dsi->regs + DSI_PHY_TIMECON0); writel(timcon1, dsi->regs + DSI_PHY_TIMECON1); @@ -353,69 +367,61 @@ static void mtk_dsi_set_vm_cmd(struct mtk_dsi *dsi) static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi) { - u32 tmp_reg; + u32 regval, tmp_reg = 0; + u8 i; - switch (dsi->lanes) { - case 1: - tmp_reg = 1 << 2; - break; - case 2: - tmp_reg = 3 << 2; - break; - case 3: - tmp_reg = 7 << 2; - break; - case 4: - tmp_reg = 0xf << 2; - break; - default: - tmp_reg = 0xf << 2; - break; - } + /* Number of DSI lanes (max 4 lanes), each bit enables one DSI lane. */ + for (i = 0; i < dsi->lanes; i++) + tmp_reg |= BIT(i); + + regval = FIELD_PREP(LANE_NUM, tmp_reg); if (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) - tmp_reg |= HSTX_CKLP_EN; + regval |= HSTX_CKLP_EN; if (dsi->mode_flags & MIPI_DSI_MODE_NO_EOT_PACKET) - tmp_reg |= DIS_EOT; + regval |= DIS_EOT; - writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL); + writel(regval, dsi->regs + DSI_TXRX_CTRL); } static void mtk_dsi_ps_control(struct mtk_dsi *dsi, bool config_vact) { - struct videomode *vm = &dsi->vm; - u32 dsi_buf_bpp, ps_wc; - u32 ps_bpp_mode; + u32 dsi_buf_bpp, ps_val, ps_wc, vact_nl; if (dsi->format == MIPI_DSI_FMT_RGB565) dsi_buf_bpp = 2; else dsi_buf_bpp = 3; - ps_wc = vm->hactive * dsi_buf_bpp; - ps_bpp_mode = ps_wc; + /* Word count */ + ps_wc = FIELD_PREP(DSI_PS_WC, dsi->vm.hactive * dsi_buf_bpp); + ps_val = ps_wc; + /* Pixel Stream type */ switch (dsi->format) { + default: + fallthrough; case MIPI_DSI_FMT_RGB888: - ps_bpp_mode |= PACKED_PS_24BIT_RGB888; + ps_val |= FIELD_PREP(DSI_PS_SEL, PACKED_PS_24BIT_RGB888); break; case MIPI_DSI_FMT_RGB666: - ps_bpp_mode |= PACKED_PS_18BIT_RGB666; + ps_val |= FIELD_PREP(DSI_PS_SEL, PACKED_PS_18BIT_RGB666); break; case MIPI_DSI_FMT_RGB666_PACKED: - ps_bpp_mode |= LOOSELY_PS_18BIT_RGB666; + ps_val |= FIELD_PREP(DSI_PS_SEL, LOOSELY_PS_18BIT_RGB666); break; case MIPI_DSI_FMT_RGB565: - ps_bpp_mode |= PACKED_PS_16BIT_RGB565; + ps_val |= FIELD_PREP(DSI_PS_SEL, PACKED_PS_16BIT_RGB565); break; } if (config_vact) { - writel(vm->vactive, dsi->regs + DSI_VACT_NL); + vact_nl = FIELD_PREP(VACT_NL, dsi->vm.vactive); + writel(vact_nl, dsi->regs + DSI_VACT_NL); writel(ps_wc, dsi->regs + DSI_HSTX_CKL_WC); } - writel(ps_bpp_mode, dsi->regs + DSI_PSCTRL); + writel(ps_val, dsi->regs + DSI_PSCTRL); } static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) @@ -442,7 +448,8 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) writel(vm->vactive, dsi->regs + DSI_VACT_NL); if (dsi->driver_data->has_size_ctl) - writel(vm->vactive << 16 | vm->hactive, + writel(FIELD_PREP(DSI_HEIGHT, vm->vactive) | + FIELD_PREP(DSI_WIDTH, vm->hactive), dsi->regs + DSI_SIZE_CON); horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10); From patchwork Wed Jan 31 11:34:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13539327 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6419EC47DB3 for ; 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Wed, 31 Jan 2024 11:34:44 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: fshao@chromium.org, 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, kernel@collabora.com Subject: [PATCH v3 4/7] drm/mediatek: dsi: Replace open-coded instance of HZ_PER_MHZ Date: Wed, 31 Jan 2024 12:34:31 +0100 Message-ID: <20240131113434.241929-5-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> References: <20240131113434.241929-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240131_033446_250231_BDA26938 X-CRM114-Status: GOOD ( 10.70 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In mtk_dsi_phy_timconfig(), we're dividing the `data_rate` variable, expressed in Hz to retrieve a value in MHz: instead of open-coding, use the HZ_PER_MHZ definition, available in linux/units.h. Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dsi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index cba63de5092d..cc625febe6c8 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -13,6 +13,7 @@ #include #include #include +#include #include