From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F3442CA8 for ; Wed, 26 Jan 2022 13:15:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643202926; x=1674738926; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=5iUtFO+EhpHndQGOg3UJPsNAroHVFCQnJAjNbMjiMGc=; b=RBh8k1PrR7YqKwEVSOe+Nlf5Vn3jmCWw/xqCDmWK4jQia3nG8xLgldQz ici/3UHd7DlrGBc1zIHS+6eTMMiU6U4SDD4RCVu81mWzD29XLVHlSyYCE 4tHTNESFOti4cI8opOkYa1576uzW3XxyC0fBAEXM2f1L3AvDIpxOH0uHy hFUpMByxVrc84MHMThWVUjEeXPq/Yi88EYW/lRO2/azdopbwFDTXqI/im ZQjF/wks57Mqk0Uv0fuJ1CpC20cQjNSdVdPHYf36bvHnFpfy4Rn0XIS1D XBcRv9kzwkcO9fWAVslbt72aaAhL5liKgCL9TaXezc3mJ+/y9m2tFGh9O A==; X-IronPort-AV: E=McAfee;i="6200,9189,10238"; a="309860072" X-IronPort-AV: E=Sophos;i="5.88,318,1635231600"; d="scan'208";a="309860072" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2022 05:15:25 -0800 X-IronPort-AV: E=Sophos;i="5.88,318,1635231600"; d="scan'208";a="597459271" Received: from smile.fi.intel.com ([10.237.72.61]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2022 05:15:22 -0800 Received: from andy by smile.fi.intel.com with local (Exim 4.95) (envelope-from ) id 1nCi5k-00EbXE-U5; Wed, 26 Jan 2022 15:12:04 +0200 Date: Wed, 26 Jan 2022 15:12:04 +0200 From: Andy Shevchenko To: Greg Kroah-Hartman Cc: Helge Deller , Daniel Vetter , Andy Shevchenko , linux-fbdev@vger.kernel.org, Michael Hennerich , linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Phillip Potter , Carlis , Lee Jones , Heiner Kallweit Subject: Re: [PATCH v1 1/4] fbtft: Unorphan the driver Message-ID: References: <20220125202118.63362-1-andriy.shevchenko@linux.intel.com> <20220125202118.63362-2-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo On Wed, Jan 26, 2022 at 12:26:36PM +0100, Greg Kroah-Hartman wrote: > On Wed, Jan 26, 2022 at 12:17:08PM +0100, Helge Deller wrote: > > On 1/26/22 11:31, Daniel Vetter wrote: ... > > You are describing a transitioning over to DRM - which is Ok. > > But on that way there is no need to ignore, deny or even kill usage scenarios > > which are different compared to your usage scenarios (e.g. embedded devices, > > old platforms, slow devices, slow busses, no 3D hardware features, > > low-color devices, ...). > > All of those should be handled by the drm layer, as Daniel keeps > pointing out. If not, then the tinydrm layer needs to be enhanced to do > so. > > Anyone have a pointer to hardware I can buy that is one of these fbtft > drivers that I could do a port to drm to see just how much work is > really needed here? I have bought myself (for other purposes, I mean not to convert the driver(s)) SSD1306 based display (SPI), SSD1331 (SPI), HX88347d (parallel). Each of them costed less than $10 with delivery to EU (nowadays maybe a bit more expensive). I believe it's very easy to find the links on AliExpress. -- With Best Regards, Andy Shevchenko