From patchwork Fri Jun 3 13:45:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yannick Fertre X-Patchwork-Id: 12869146 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 AE56FC43334 for ; Fri, 3 Jun 2022 15:04:50 +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:Message-ID:Date:Subject:To :From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=brH9zU+EyZRRB0WQ9WmHraiwiFmTXoy5OO95kVArZ3c=; b=GsvrZERxfKAcYP libDJA6pAI+KxbCwzXH3iVnxPkogwK29ODosgO6LT7SagaE+PzImKIFqveopkmWDXoikJyUYvpe4l TBkecRfCpOl/qyc/kg5wB8YHeyJZ/TJRgOMrRqCmxsD8PfHJja9MRa9557lcpk1Stdd7+tJw7tnBl StSmMboCu5X6JmdqQOFm05Oc9CVnY/purlgJ/ApPV58CJu+CSlbs6hfk6SCkjqtVsO/qBvwW75jFb 7yaEQhDJ9cdNA+XpWuhZWym+jcwMO31OfVPomR88QGUoSpEYFHKcehamPwJqy6RPhimiGtt0sxEdd CY1NMSR8ttm7IKTQEEeQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nx8om-007vUa-GZ; Fri, 03 Jun 2022 15:02:28 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nx8oU-007vQA-Bj for linux-arm-kernel@lists.infradead.org; Fri, 03 Jun 2022 15:02:26 +0000 Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 2539LorH004996; Fri, 3 Jun 2022 17:01:57 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=selector1; bh=tG0Xrps0gSb8j0LO/2hOXRkpfo2qB4od4SXrRGwS0Gs=; b=GUHE2LXoCAgbFsCsL5BpOdlRvRysydFy0yE8RDe3fKVFCXdImx2/PgmGqRBtdBAQH52o f6XoCwbR/6xPtlFsJeDD7UPvXaANzD7hCrZO64pl4BA8T2KGpB9ls/NkGoZyZTpHXwvr 0uwAf6rLcR7dDE2Q3yMJIvY0qpy2bCpAJorPsKoFJ0EI+v51F7C+2aFE+HI7LXIIP8uO YdzJQdfehNHWR93EWt03rn0dO5HAP6S2Fq1NDxegRJ4c/4fEig3T6D+WbCmwz4O9E8oO ogexgufgeV1TvIPOg8hsDAQLGmak++OdDK4uBuzxYy1yJZw1AYmYKKhvnsAwFQsyB+1X gw== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3gbc516qt4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 03 Jun 2022 17:01:40 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 2F83E4008A; Fri, 3 Jun 2022 15:46:23 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 4CA6F2278A1; Fri, 3 Jun 2022 15:45:49 +0200 (CEST) Received: from localhost (10.75.127.50) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.20; Fri, 3 Jun 2022 15:45:48 +0200 From: Yannick Fertre To: Yannick Fertre , Philippe Cornu , Raphael Gallais-Pou , David Airlie , Daniel Vetter , Maxime Coquelin , Alexandre Torgue , , , , Subject: [PATCH] drm/stm: ltdc: add support of horizontal & vertical mirroring Date: Fri, 3 Jun 2022 15:45:47 +0200 Message-ID: <20220603134547.593790-1-yannick.fertre@foss.st.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.50] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.517,FMLib:17.11.64.514 definitions=2022-06-03_05,2022-06-03_01,2022-02-23_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220603_080219_882217_98C825ED X-CRM114-Status: GOOD ( 25.73 ) 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 Support of vertical & horizontal mirroring features thanks to the plane rotation property. Signed-off-by: Yannick Fertre --- drivers/gpu/drm/stm/ltdc.c | 163 ++++++++++++++++++++++++------------- drivers/gpu/drm/stm/ltdc.h | 1 + 2 files changed, 108 insertions(+), 56 deletions(-) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 00a6bc1b1d7c..ff2075dd9474 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -180,6 +180,7 @@ #define LXCR_LEN BIT(0) /* Layer ENable */ #define LXCR_COLKEN BIT(1) /* Color Keying Enable */ #define LXCR_CLUTEN BIT(4) /* Color Look-Up Table ENable */ +#define LXCR_HMEN BIT(8) /* Horizontal Mirroring ENable */ #define LXWHPCR_WHSTPOS GENMASK(11, 0) /* Window Horizontal StarT POSition */ #define LXWHPCR_WHSPPOS GENMASK(27, 16) /* Window Horizontal StoP POSition */ @@ -197,7 +198,7 @@ #define LXBFCR_BOR GENMASK(18, 16) /* Blending ORder */ #define LXCFBLR_CFBLL GENMASK(12, 0) /* Color Frame Buffer Line Length */ -#define LXCFBLR_CFBP GENMASK(28, 16) /* Color Frame Buffer Pitch in bytes */ +#define LXCFBLR_CFBP GENMASK(31, 16) /* Color Frame Buffer Pitch in bytes */ #define LXCFBLNR_CFBLN GENMASK(10, 0) /* Color Frame Buffer Line Number */ @@ -1237,7 +1238,8 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, u32 y0 = newstate->crtc_y; u32 y1 = newstate->crtc_y + newstate->crtc_h - 1; u32 src_x, src_y, src_w, src_h; - u32 val, pitch_in_bytes, line_length, line_number, paddr, ahbp, avbp, bpcr; + u32 val, pitch_in_bytes, line_length, line_number, ahbp, avbp, bpcr; + u32 paddr, paddr1, paddr2; enum ltdc_pix_fmt pf; if (!newstate->crtc || !fb) { @@ -1289,13 +1291,6 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, } regmap_write_bits(ldev->regmap, LTDC_L1PFCR + lofs, LXPFCR_PF, val); - /* Configures the color frame buffer pitch in bytes & line length */ - pitch_in_bytes = fb->pitches[0]; - line_length = fb->format->cpp[0] * - (x1 - x0 + 1) + (ldev->caps.bus_width >> 3) - 1; - val = ((pitch_in_bytes << 16) | line_length); - regmap_write_bits(ldev->regmap, LTDC_L1CFBLR + lofs, LXCFBLR_CFBLL | LXCFBLR_CFBP, val); - /* Specifies the constant alpha value */ val = newstate->alpha >> 8; regmap_write_bits(ldev->regmap, LTDC_L1CACR + lofs, LXCACR_CONSTA, val); @@ -1319,76 +1314,115 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, LXBFCR_BF2 | LXBFCR_BF1, val); } - /* Configures the frame buffer line number */ - line_number = y1 - y0 + 1; - regmap_write_bits(ldev->regmap, LTDC_L1CFBLNR + lofs, LXCFBLNR_CFBLN, line_number); - /* Sets the FB address */ paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 0); + if (newstate->rotation & DRM_MODE_REFLECT_X) + paddr += (fb->format->cpp[0] * (x1 - x0 + 1)) - 1; + + if (newstate->rotation & DRM_MODE_REFLECT_Y) + paddr += (fb->pitches[0] * (y1 - y0)); + DRM_DEBUG_DRIVER("fb: phys 0x%08x", paddr); regmap_write(ldev->regmap, LTDC_L1CFBAR + lofs, paddr); + /* Configures the color frame buffer pitch in bytes & line length */ + line_length = fb->format->cpp[0] * + (x1 - x0 + 1) + (ldev->caps.bus_width >> 3) - 1; + + if (newstate->rotation & DRM_MODE_REFLECT_Y) + /* Compute negative value (signed on 16 bits) for the picth */ + pitch_in_bytes = 0x10000 - fb->pitches[0]; + else + pitch_in_bytes = fb->pitches[0]; + + val = (pitch_in_bytes << 16) | line_length; + regmap_write_bits(ldev->regmap, LTDC_L1CFBLR + lofs, LXCFBLR_CFBLL | LXCFBLR_CFBP, val); + + /* Configures the frame buffer line number */ + line_number = y1 - y0 + 1; + regmap_write_bits(ldev->regmap, LTDC_L1CFBLNR + lofs, LXCFBLNR_CFBLN, line_number); + if (ldev->caps.ycbcr_input) { if (fb->format->is_yuv) { switch (fb->format->format) { case DRM_FORMAT_NV12: case DRM_FORMAT_NV21: - /* Configure the auxiliary frame buffer address 0 & 1 */ - paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); - regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr); - regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr + 1); + /* Configure the auxiliary frame buffer address 0 */ + paddr1 = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); + + if (newstate->rotation & DRM_MODE_REFLECT_X) + paddr1 += ((fb->format->cpp[1] * (x1 - x0 + 1)) >> 1) - 1; - /* Configure the buffer length */ - val = ((pitch_in_bytes << 16) | line_length); - regmap_write(ldev->regmap, LTDC_L1AFBLR + lofs, val); + if (newstate->rotation & DRM_MODE_REFLECT_Y) + paddr1 += (fb->pitches[1] * (y1 - y0 - 1)) >> 1; - /* Configure the frame buffer line number */ - val = (line_number >> 1); - regmap_write(ldev->regmap, LTDC_L1AFBLNR + lofs, val); + regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr1); break; case DRM_FORMAT_YUV420: - /* Configure the auxiliary frame buffer address 0 */ - paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); - regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr); - - /* Configure the auxiliary frame buffer address 1 */ - paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 2); - regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr); + /* Configure the auxiliary frame buffer address 0 & 1 */ + paddr1 = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); + paddr2 = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 2); - line_length = ((fb->format->cpp[0] * (x1 - x0 + 1)) >> 1) + - (ldev->caps.bus_width >> 3) - 1; + if (newstate->rotation & DRM_MODE_REFLECT_X) { + paddr1 += ((fb->format->cpp[1] * (x1 - x0 + 1)) >> 1) - 1; + paddr2 += ((fb->format->cpp[2] * (x1 - x0 + 1)) >> 1) - 1; + } - /* Configure the buffer length */ - val = (((pitch_in_bytes >> 1) << 16) | line_length); - regmap_write(ldev->regmap, LTDC_L1AFBLR + lofs, val); + if (newstate->rotation & DRM_MODE_REFLECT_Y) { + paddr1 += (fb->pitches[1] * (y1 - y0 - 1)) >> 1; + paddr2 += (fb->pitches[2] * (y1 - y0 - 1)) >> 1; + } - /* Configure the frame buffer line number */ - val = (line_number >> 1); - regmap_write(ldev->regmap, LTDC_L1AFBLNR + lofs, val); + regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr1); + regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr2); break; case DRM_FORMAT_YVU420: - /* Configure the auxiliary frame buffer address 0 */ - paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 2); - regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr); - - /* Configure the auxiliary frame buffer address 1 */ - paddr = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); - regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr); + /* Configure the auxiliary frame buffer address 0 & 1 */ + paddr1 = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 2); + paddr2 = (u32)drm_fb_cma_get_gem_addr(fb, newstate, 1); - line_length = ((fb->format->cpp[0] * (x1 - x0 + 1)) >> 1) + - (ldev->caps.bus_width >> 3) - 1; + if (newstate->rotation & DRM_MODE_REFLECT_X) { + paddr1 += ((fb->format->cpp[1] * (x1 - x0 + 1)) >> 1) - 1; + paddr2 += ((fb->format->cpp[2] * (x1 - x0 + 1)) >> 1) - 1; + } - /* Configure the buffer length */ - val = (((pitch_in_bytes >> 1) << 16) | line_length); - regmap_write(ldev->regmap, LTDC_L1AFBLR + lofs, val); + if (newstate->rotation & DRM_MODE_REFLECT_Y) { + paddr1 += (fb->pitches[1] * (y1 - y0 - 1)) >> 1; + paddr2 += (fb->pitches[2] * (y1 - y0 - 1)) >> 1; + } - /* Configure the frame buffer line number */ - val = (line_number >> 1); - regmap_write(ldev->regmap, LTDC_L1AFBLNR + lofs, val); + regmap_write(ldev->regmap, LTDC_L1AFBA0R + lofs, paddr1); + regmap_write(ldev->regmap, LTDC_L1AFBA1R + lofs, paddr2); break; } + /* + * Set the length and the number of lines of the auxiliary + * buffers if the framebuffer contains more than one plane. + */ + if (fb->format->num_planes > 1) { + if (newstate->rotation & DRM_MODE_REFLECT_Y) + /* + * Compute negative value (signed on 16 bits) + * for the picth + */ + pitch_in_bytes = 0x10000 - fb->pitches[1]; + else + pitch_in_bytes = fb->pitches[1]; + + line_length = ((fb->format->cpp[1] * (x1 - x0 + 1)) >> 1) + + (ldev->caps.bus_width >> 3) - 1; + + /* Configure the auxiliary buffer length */ + val = (pitch_in_bytes << 16) | line_length; + regmap_write(ldev->regmap, LTDC_L1AFBLR + lofs, val); + + /* Configure the auxiliary frame buffer line number */ + val = line_number >> 1; + regmap_write(ldev->regmap, LTDC_L1AFBLNR + lofs, val); + } + /* Configure YCbC conversion coefficient */ ltdc_set_ycbcr_coeffs(plane); @@ -1403,7 +1437,12 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, /* Enable layer and CLUT if needed */ val = fb->format->format == DRM_FORMAT_C8 ? LXCR_CLUTEN : 0; val |= LXCR_LEN; - regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN, val); + + /* Enable horizontal mirroring if requested */ + if (newstate->rotation & DRM_MODE_REFLECT_X) + val |= LXCR_HMEN; + + regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN | LXCR_HMEN, val); /* Commit shadow registers = update plane at next vblank */ if (ldev->caps.plane_reg_shadow) @@ -1432,8 +1471,8 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane, struct ltdc_device *ldev = plane_to_ltdc(plane); u32 lofs = plane->index * LAY_OFS; - /* disable layer */ - regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN, 0); + /* Disable layer */ + regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN | LXCR_HMEN, 0); /* Commit shadow registers = update plane at next vblank */ if (ldev->caps.plane_reg_shadow) @@ -1577,6 +1616,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) { struct ltdc_device *ldev = ddev->dev_private; struct drm_plane *primary, *overlay; + int supported_rotations = DRM_MODE_ROTATE_0 | DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y; unsigned int i; int ret; @@ -1591,6 +1631,10 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) else drm_plane_create_zpos_immutable_property(primary, 0); + if (ldev->caps.plane_rotation) + drm_plane_create_rotation_property(primary, DRM_MODE_ROTATE_0, + supported_rotations); + /* Init CRTC according to its hardware features */ if (ldev->caps.crc) ret = drm_crtc_init_with_planes(ddev, crtc, primary, NULL, @@ -1622,6 +1666,10 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc) drm_plane_create_zpos_property(overlay, i, 0, ldev->caps.nb_layers - 1); else drm_plane_create_zpos_immutable_property(overlay, i); + + if (ldev->caps.plane_rotation) + drm_plane_create_rotation_property(overlay, DRM_MODE_ROTATE_0, + supported_rotations); } return 0; @@ -1752,6 +1800,7 @@ static int ltdc_get_caps(struct drm_device *ddev) ldev->caps.plane_reg_shadow = false; ldev->caps.crc = false; ldev->caps.dynamic_zorder = false; + ldev->caps.plane_rotation = false; break; case HWVER_20101: ldev->caps.layer_ofs = LAY_OFS_0; @@ -1768,6 +1817,7 @@ static int ltdc_get_caps(struct drm_device *ddev) ldev->caps.plane_reg_shadow = false; ldev->caps.crc = false; ldev->caps.dynamic_zorder = false; + ldev->caps.plane_rotation = false; break; case HWVER_40100: ldev->caps.layer_ofs = LAY_OFS_1; @@ -1784,6 +1834,7 @@ static int ltdc_get_caps(struct drm_device *ddev) ldev->caps.plane_reg_shadow = true; ldev->caps.crc = true; ldev->caps.dynamic_zorder = true; + ldev->caps.plane_rotation = true; break; default: return -ENODEV; diff --git a/drivers/gpu/drm/stm/ltdc.h b/drivers/gpu/drm/stm/ltdc.h index 4855898bd4c0..15139980d8ea 100644 --- a/drivers/gpu/drm/stm/ltdc.h +++ b/drivers/gpu/drm/stm/ltdc.h @@ -29,6 +29,7 @@ struct ltdc_caps { bool plane_reg_shadow; /* plane shadow registers ability */ bool crc; /* cyclic redundancy check supported */ bool dynamic_zorder; /* dynamic z-order */ + bool plane_rotation; /* plane rotation */ }; #define LTDC_MAX_LAYER 4