From patchwork Thu May 14 14:39:50 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Lespiau, Damien" X-Patchwork-Id: 6406211 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4C5D1C0432 for ; Thu, 14 May 2015 14:39:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 55A1D20437 for ; Thu, 14 May 2015 14:39:55 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 4FD8C20412 for ; Thu, 14 May 2015 14:39:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BAD6A6E835; Thu, 14 May 2015 07:39:53 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 15A966E835 for ; Thu, 14 May 2015 07:39:52 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP; 14 May 2015 07:39:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,429,1427785200"; d="scan'208";a="710178835" Received: from mnikolic-mobl1.ger.corp.intel.com (HELO strange.ger.corp.intel.com) ([10.252.9.174]) by fmsmga001.fm.intel.com with ESMTP; 14 May 2015 07:39:50 -0700 From: Damien Lespiau To: intel-gfx@lists.freedesktop.org Date: Thu, 14 May 2015 15:39:50 +0100 Message-Id: <1431614390-12605-1-git-send-email-damien.lespiau@intel.com> X-Mailer: git-send-email 2.1.0 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH i-g-t] intel_display_crc: A new tool to play with display CRCs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The CRC debug interface is a bit more than a simple textual file in debugfs as there are a small command language to control what we want from them. This tool starts, slowly, by allowing us to dump the pipe CRCs whenever we want. It can be handy to check what is the current CRC when we reach a certain state on the screen (when using --interactive-debug for instance) against a known CRC. Signed-off-by: Damien Lespiau --- tools/.gitignore | 1 + tools/Makefile.sources | 1 + tools/intel_display_crc.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 112 insertions(+) create mode 100644 tools/intel_display_crc.c diff --git a/tools/.gitignore b/tools/.gitignore index b47fafd..5a2f5ff 100644 --- a/tools/.gitignore +++ b/tools/.gitignore @@ -4,6 +4,7 @@ intel_audio_dump intel_backlight intel_bios_dumper intel_bios_reader +intel_display_crc intel_display_poller intel_dump_decode intel_error_decode diff --git a/tools/Makefile.sources b/tools/Makefile.sources index b07a71c..5acf45a 100644 --- a/tools/Makefile.sources +++ b/tools/Makefile.sources @@ -10,6 +10,7 @@ bin_PROGRAMS = \ intel_backlight \ intel_bios_dumper \ intel_bios_reader \ + intel_display_crc \ intel_display_poller \ intel_dump_decode \ intel_error_decode \ diff --git a/tools/intel_display_crc.c b/tools/intel_display_crc.c new file mode 100644 index 0000000..ba9ec5b --- /dev/null +++ b/tools/intel_display_crc.c @@ -0,0 +1,110 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + * Authors: + * Damien Lespiau + */ + +#include +#include +#include +#include + +#include "igt_core.h" +#include "igt_debugfs.h" +#include "igt_kms.h" + +typedef struct { + int fd; + int pipe; + int n_crcs; +} display_crc_t; + +static int pipe_from_str(const char *str) +{ + unsigned char c; + + if (!str || strlen(str) != 1) + return -1; + + c = str[0]; + + if (c >= 'A' && c <= 'C') + return c - 'A'; + + if (c >= 'a' && c <= 'c') + return c - 'a'; + + if (c >= '0' && c <= '3') + return c - '0'; + + return -1; +} + +static void print_crcs(display_crc_t *ctx) +{ + igt_pipe_crc_t *pipe_crc; + igt_crc_t crc; + char *crc_str; + int i; + + pipe_crc = igt_pipe_crc_new(ctx->pipe, INTEL_PIPE_CRC_SOURCE_AUTO); + + for (i = 0; i < ctx->n_crcs; i++) { + igt_pipe_crc_collect_crc(pipe_crc, &crc); + + crc_str = igt_crc_to_string(&crc); + printf("CRC on pipe %s: %s\n", kmstest_pipe_name(ctx->pipe), + crc_str); + free(crc_str); + } + + igt_pipe_crc_free(pipe_crc); +} + +static display_crc_t ctx; + +int main(int argc, char **argv) +{ + int opt; + + ctx.n_crcs = 1; + + while ((opt = getopt(argc, argv, "p:n:")) != -1) { + switch (opt) { + case 'p': + ctx.pipe = pipe_from_str(optarg); + if (ctx.pipe == -1) { + fprintf(stderr, "Unknown pipe %s\n", optarg); + exit(1); + } + break; + case 'n': + ctx.n_crcs = atoi(optarg); + break; + default: + igt_assert(0); + } + } + + print_crcs(&ctx); +}