From patchwork Wed Feb 21 05:35:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manikandan Muralidharan X-Patchwork-Id: 13564935 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 32149C48BC3 for ; Wed, 21 Feb 2024 05:35:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6CAE310E604; Wed, 21 Feb 2024 05:35:55 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=microchip.com header.i=@microchip.com header.b="ehn8z6rn"; dkim-atps=neutral Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by gabe.freedesktop.org (Postfix) with ESMTPS id BBA5B10E604 for ; Wed, 21 Feb 2024 05:35:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1708493753; x=1740029753; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=i2g2RwYvdYzisFpUrzxjvDgtwPvv5krapAooAMh2eb8=; b=ehn8z6rnmbOedKo/Uhwc7qEtH9p2BCLz2uyRa4j4fkw0AvHnYwWD+Z5r wS9d059IzKqO0ThH3qNYeVm5Q/kYpzoDzDzGbFgr4flunc+4XdNNUF0NA cYHINmNGrk1o9h8A8xKoO+9wY8zDDbBbXhUHG3ck+Pb+BbJc2z6wUaYRx LHw+dTlkFvbYstxvUET0rvdaVRqfx4EhBd0SqZen5bRl0bKOGIjogML7N qcXwq5/8fxYMAei9sdx7ZrwXLcHjVmqY+zKd41L8yyIToYmlSrNWyKvXR cuy9bvtSu9UTgO+j2HBYm7Jo2pBez33sZPYZGHhRZh2aMuRpivRVuEaJs g==; X-CSE-ConnectionGUID: GBi6ox9HSPqBW3WJPlVwRw== X-CSE-MsgGUID: nPi8X/1qQQquDj7LyoXFMg== X-IronPort-AV: E=Sophos;i="6.06,174,1705388400"; d="scan'208";a="18086630" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 20 Feb 2024 22:35:52 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.87.72) by chn-vm-ex02.mchp-main.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 20 Feb 2024 22:35:42 -0700 Received: from che-lt-i67131.microchip.com (10.10.85.11) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Tue, 20 Feb 2024 22:35:35 -0700 From: Manikandan Muralidharan To: , , , , , , , , , , , , , CC: , , , , , , , , Subject: [PATCH v8 0/7] Add support for XLCDC to sam9x7 SoC family. Date: Wed, 21 Feb 2024 11:05:24 +0530 Message-ID: <20240221053531.12701-1-manikandan.m@microchip.com> X-Mailer: git-send-email 2.25.1 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This patch series aims to add support for XLCDC IP of sam9x7 SoC family to the DRM subsystem.XLCDC IP has additional registers and new configuration bits compared to the existing register set of HLCDC IP. The new compatible string "microchip,sam9x75-xlcdc" is defined for sam9x75 variant of the sam9x7 SoC family.The is_xlcdc flag under driver data and IP specific driver ops helps to differentiate the XLCDC and existing HLCDC code within the same driver. changes in v8: * Re-arrange the patch set to prepare and update the current HLCDC code base with the new LCDC IP based driver ops and then add support for XLCDC code changes. * Fix Cosmetic issues. changes in v7: * LCDC IP driver ops functions are declared static and its declaration are removed. changes in v6: * Fixed Cosmetic defects. * Added comments for readability. changes in v5: * return value of regmap_read_poll_timeout is checked in failure case. * HLCDC and XLCDC specific driver functions are now invoked using its IP specific driver ops w/o the need of checking is_xlcdc flag. * Removed empty spaces and blank lines. changes in v4: * fixed kernel warnings reported by kernel test robot. changes in v3: * Removed de-referencing the value of is_xlcdc flag multiple times in a single function. * Removed cpu_relax() call when using regmap_read_poll_timeout. * Updated xfactor and yfactor equations using shift operators * Defined CSC co-efficients in an array for code readability. changes in v2: * Change the driver compatible name from "microchip,sam9x7-xlcdc" to "microchip,sam9x75-xlcdc". * Move is_xlcdc flag to driver data. * Remove unsed Macro definitions. * Add co-developed-bys tags * Replace regmap_read() with regmap_read_poll_timeout() call * Split code into two helpers for code readablitity. Acked-by: Sam Ravnborg Reviewed-by: Claudiu Beznea --- Durai Manickam KR (1): drm: atmel-hlcdc: Define XLCDC specific registers Manikandan Muralidharan (6): drm: atmel-hlcdc: add driver ops to differentiate HLCDC and XLCDC IP drm: atmel_hlcdc: Add support for XLCDC using IP specific driver ops drm: atmel-hlcdc: add DPI mode support for XLCDC drm: atmel-hlcdc: add vertical and horizontal scaling support for XLCDC drm: atmel-hlcdc: add support for DSI output formats drm: atmel-hlcdc: add LCD controller layer definition for sam9x75 .../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 176 +++++++-- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 105 +++++ drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 133 +++++-- .../gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 369 +++++++++++++++--- include/linux/mfd/atmel-hlcdc.h | 10 + 5 files changed, 678 insertions(+), 115 deletions(-)