From patchwork Thu Feb 23 22:53:53 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Herrenschmidt X-Patchwork-Id: 9589099 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5E8C060210 for ; Thu, 23 Feb 2017 23:16:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 537B92876D for ; Thu, 23 Feb 2017 23:16:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4753428779; Thu, 23 Feb 2017 23:16:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id DD7A32876D for ; Thu, 23 Feb 2017 23:16:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A0CA66E082; Thu, 23 Feb 2017 23:16:50 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) by gabe.freedesktop.org (Postfix) with ESMTPS id 793F16E082 for ; Thu, 23 Feb 2017 23:16:48 +0000 (UTC) Received: from pasglop.au.ibm.com (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.13.8) with ESMTP id v1NMrx68013978; Thu, 23 Feb 2017 16:54:44 -0600 From: Benjamin Herrenschmidt To: dri-devel@lists.freedesktop.org Subject: [PATCH 08/12] drm/ast: Factor mmc_test code in POST code Date: Fri, 24 Feb 2017 09:53:53 +1100 Message-Id: <20170223225357.9572-8-benh@kernel.crashing.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170223225357.9572-1-benh@kernel.crashing.org> References: <20170223225357.9572-1-benh@kernel.crashing.org> Cc: linuxppc-dev@ozlabs.org, airlied@redhat.com, eich@suse.come X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP There's a some duplication for what's essentially copies of two loops, so factor it. The upcoming AST2500 POST code adds more of them. Also cleanup return types for the test functions, most of them return a boolean, some return a u32. Signed-off-by: Benjamin Herrenschmidt Acked-by: Joel Stanley Tested-by: Y.C. Chen Signed-off-by: Benjamin Herrenschmidt --- v2. - Keep the split between the "test" and "test2" functions as they have a different exit condition in the loop and a different return type. - Fix the return types accross the call chain --- drivers/gpu/drm/ast/ast_post.c | 82 ++++++++++++++++-------------------------- 1 file changed, 31 insertions(+), 51 deletions(-) diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c index e802450..c55067c 100644 --- a/drivers/gpu/drm/ast/ast_post.c +++ b/drivers/gpu/drm/ast/ast_post.c @@ -445,85 +445,65 @@ static const u32 pattern[8] = { 0x7C61D253 }; -static int mmc_test_burst(struct ast_private *ast, u32 datagen) +static bool mmc_test(struct ast_private *ast, u32 datagen, u8 test_ctl) { u32 data, timeout; ast_moutdwm(ast, 0x1e6e0070, 0x00000000); - ast_moutdwm(ast, 0x1e6e0070, 0x000000c1 | (datagen << 3)); + ast_moutdwm(ast, 0x1e6e0070, (datagen << 3) | test_ctl); timeout = 0; do { data = ast_mindwm(ast, 0x1e6e0070) & 0x3000; - if (data & 0x2000) { - return 0; - } + if (data & 0x2000) + return false; if (++timeout > TIMEOUT) { ast_moutdwm(ast, 0x1e6e0070, 0x00000000); - return 0; + return false; } } while (!data); - ast_moutdwm(ast, 0x1e6e0070, 0x00000000); - return 1; + ast_moutdwm(ast, 0x1e6e0070, 0x0); + return true; } -static int mmc_test_burst2(struct ast_private *ast, u32 datagen) +static u32 mmc_test2(struct ast_private *ast, u32 datagen, u8 test_ctl) { u32 data, timeout; ast_moutdwm(ast, 0x1e6e0070, 0x00000000); - ast_moutdwm(ast, 0x1e6e0070, 0x00000041 | (datagen << 3)); + ast_moutdwm(ast, 0x1e6e0070, (datagen << 3) | test_ctl); timeout = 0; do { data = ast_mindwm(ast, 0x1e6e0070) & 0x1000; if (++timeout > TIMEOUT) { ast_moutdwm(ast, 0x1e6e0070, 0x0); - return -1; + return 0xffffffff; } } while (!data); data = ast_mindwm(ast, 0x1e6e0078); data = (data | (data >> 16)) & 0xffff; - ast_moutdwm(ast, 0x1e6e0070, 0x0); + ast_moutdwm(ast, 0x1e6e0070, 0x00000000); return data; } -static int mmc_test_single(struct ast_private *ast, u32 datagen) + +static bool mmc_test_burst(struct ast_private *ast, u32 datagen) { - u32 data, timeout; + return mmc_test(ast, datagen, 0xc1); +} - ast_moutdwm(ast, 0x1e6e0070, 0x00000000); - ast_moutdwm(ast, 0x1e6e0070, 0x000000c5 | (datagen << 3)); - timeout = 0; - do { - data = ast_mindwm(ast, 0x1e6e0070) & 0x3000; - if (data & 0x2000) - return 0; - if (++timeout > TIMEOUT) { - ast_moutdwm(ast, 0x1e6e0070, 0x0); - return 0; - } - } while (!data); - ast_moutdwm(ast, 0x1e6e0070, 0x0); - return 1; +static u32 mmc_test_burst2(struct ast_private *ast, u32 datagen) +{ + return mmc_test2(ast, datagen, 0x41); } -static int mmc_test_single2(struct ast_private *ast, u32 datagen) +static bool mmc_test_single(struct ast_private *ast, u32 datagen) { - u32 data, timeout; + return mmc_test(ast, datagen, 0xc5); +} - ast_moutdwm(ast, 0x1e6e0070, 0x00000000); - ast_moutdwm(ast, 0x1e6e0070, 0x00000005 | (datagen << 3)); - timeout = 0; - do { - data = ast_mindwm(ast, 0x1e6e0070) & 0x1000; - if (++timeout > TIMEOUT) { - ast_moutdwm(ast, 0x1e6e0070, 0x0); - return -1; - } - } while (!data); - data = ast_mindwm(ast, 0x1e6e0078); - data = (data | (data >> 16)) & 0xffff; - ast_moutdwm(ast, 0x1e6e0070, 0x0); - return data; +static u32 mmc_test_single2(struct ast_private *ast, u32 datagen) +{ + return mmc_test2(ast, datagen, 0x05); } static int cbr_test(struct ast_private *ast) @@ -601,16 +581,16 @@ static u32 cbr_scan2(struct ast_private *ast) return data2; } -static u32 cbr_test3(struct ast_private *ast) +static bool cbr_test3(struct ast_private *ast) { if (!mmc_test_burst(ast, 0)) - return 0; + return false; if (!mmc_test_single(ast, 0)) - return 0; - return 1; + return false; + return true; } -static u32 cbr_scan3(struct ast_private *ast) +static bool cbr_scan3(struct ast_private *ast) { u32 patcnt, loop; @@ -621,9 +601,9 @@ static u32 cbr_scan3(struct ast_private *ast) break; } if (loop == 2) - return 0; + return false; } - return 1; + return true; } static bool finetuneDQI_L(struct ast_private *ast, struct ast2300_dram_param *param)