From patchwork Mon Mar 9 19:52:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 11427941 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BEC8114E3 for ; Mon, 9 Mar 2020 19:53:41 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9D3C420866 for ; Mon, 9 Mar 2020 19:53:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="MWBCcFsV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9D3C420866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C75FB6E580; Mon, 9 Mar 2020 19:53:23 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by gabe.freedesktop.org (Postfix) with ESMTPS id DB2896E542 for ; Mon, 9 Mar 2020 19:53:19 +0000 (UTC) Received: from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi [81.175.216.236]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 6278A4A72; Mon, 9 Mar 2020 20:53:15 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1583783595; bh=Rn1eEWjU3ySdN+fjuouRFWdfETsSBDpoi/t1jGlUlXg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MWBCcFsVlNLrHpDaYY6kPhDlaQPPvybykz56T7CyTBRX8NXsvgEhzBUO89n+IXFVR RlbXzU8v1l3+z20e9PnXLLpjLKIeOBGRxPeZt2jltyuirRnWTEU6GcDyyQr2PlLT5W dwDwg6Dbeerh4de0SQqsZcWsQ0YagfwO9eK9OZFg= From: Laurent Pinchart To: dri-devel@lists.freedesktop.org Subject: [PATCH 20/21] drm: mxsfb: Merge mxsfb_set_pixel_fmt() and mxsfb_set_bus_fmt() Date: Mon, 9 Mar 2020 21:52:15 +0200 Message-Id: <20200309195216.31042-21-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200309195216.31042-1-laurent.pinchart@ideasonboard.com> References: <20200309195216.31042-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 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: Marek Vasut , kernel@pengutronix.de, linux-imx@nxp.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The mxsfb_set_pixel_fmt() and mxsfb_set_bus_fmt() functions both deal with format configuration, are always called in a row from mxsfb_crtc_mode_set_nofb(), and set fields from the LCDC_CTRL register. This requires a read-modify-update cycle in mxsfb_set_bus_fmt(). Make this more efficient by merging them together. Signed-off-by: Laurent Pinchart Reviewed-by: Stefan Agner --- drivers/gpu/drm/mxsfb/mxsfb_kms.c | 47 +++++++++++++------------------ 1 file changed, 19 insertions(+), 28 deletions(-) diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c b/drivers/gpu/drm/mxsfb/mxsfb_kms.c index 19b937b383cf..f81f8c222c13 100644 --- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c +++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c @@ -42,13 +42,23 @@ static u32 set_hsync_pulse_width(struct mxsfb_drm_private *mxsfb, u32 val) mxsfb->devdata->hs_wdth_shift; } -/* Setup the MXSFB registers for decoding the pixels out of the framebuffer */ -static void mxsfb_set_pixel_fmt(struct mxsfb_drm_private *mxsfb) +/* + * Setup the MXSFB registers for decoding the pixels out of the framebuffer and + * outputting them on the bus. + */ +static void mxsfb_set_formats(struct mxsfb_drm_private *mxsfb) { struct drm_device *drm = mxsfb->drm; const u32 format = mxsfb->crtc.primary->state->fb->format->format; + u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; u32 ctrl, ctrl1; + if (mxsfb->connector->display_info.num_bus_formats) + bus_format = mxsfb->connector->display_info.bus_formats[0]; + + DRM_DEV_DEBUG_DRIVER(drm->dev, "Using bus_format: 0x%08X\n", + bus_format); + ctrl = CTRL_BYPASS_COUNT | CTRL_MASTER; /* CTRL1 contains IRQ config and status bits, preserve those. */ @@ -69,40 +79,23 @@ static void mxsfb_set_pixel_fmt(struct mxsfb_drm_private *mxsfb) break; } - writel(ctrl1, mxsfb->base + LCDC_CTRL1); - writel(ctrl, mxsfb->base + LCDC_CTRL); -} - -static void mxsfb_set_bus_fmt(struct mxsfb_drm_private *mxsfb) -{ - struct drm_device *drm = mxsfb->drm; - u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; - u32 reg; - - reg = readl(mxsfb->base + LCDC_CTRL); - - if (mxsfb->connector->display_info.num_bus_formats) - bus_format = mxsfb->connector->display_info.bus_formats[0]; - - DRM_DEV_DEBUG_DRIVER(drm->dev, "Using bus_format: 0x%08X\n", - bus_format); - - reg &= ~CTRL_BUS_WIDTH_MASK; switch (bus_format) { case MEDIA_BUS_FMT_RGB565_1X16: - reg |= CTRL_BUS_WIDTH_16; + ctrl |= CTRL_BUS_WIDTH_16; break; case MEDIA_BUS_FMT_RGB666_1X18: - reg |= CTRL_BUS_WIDTH_18; + ctrl |= CTRL_BUS_WIDTH_18; break; case MEDIA_BUS_FMT_RGB888_1X24: - reg |= CTRL_BUS_WIDTH_24; + ctrl |= CTRL_BUS_WIDTH_24; break; default: dev_err(drm->dev, "Unknown media bus format %d\n", bus_format); break; } - writel(reg, mxsfb->base + LCDC_CTRL); + + writel(ctrl1, mxsfb->base + LCDC_CTRL1); + writel(ctrl, mxsfb->base + LCDC_CTRL); } static void mxsfb_enable_controller(struct mxsfb_drm_private *mxsfb) @@ -213,7 +206,7 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb) /* Clear the FIFOs */ writel(CTRL1_FIFO_CLEAR, mxsfb->base + LCDC_CTRL1 + REG_SET); - mxsfb_set_pixel_fmt(mxsfb); + mxsfb_set_formats(mxsfb); clk_set_rate(mxsfb->clk, m->crtc_clock * 1000); @@ -255,8 +248,6 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb) writel(vdctrl0, mxsfb->base + LCDC_VDCTRL0); - mxsfb_set_bus_fmt(mxsfb); - /* Frame length in lines. */ writel(m->crtc_vtotal, mxsfb->base + LCDC_VDCTRL1);