From patchwork Fri Feb 15 12:56:39 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lee Jones X-Patchwork-Id: 14893 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id 825CA23E01 for ; Fri, 15 Feb 2013 12:57:38 +0000 (UTC) Received: from mail-vb0-f52.google.com (mail-vb0-f52.google.com [209.85.212.52]) by fiordland.canonical.com (Postfix) with ESMTP id 40B1DA18025 for ; Fri, 15 Feb 2013 12:57:38 +0000 (UTC) Received: by mail-vb0-f52.google.com with SMTP id fa15so2169592vbb.11 for ; Fri, 15 Feb 2013 04:57:37 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:x-forwarded-to:x-forwarded-for:delivered-to:x-received :received-spf:x-received:from:to:cc:subject:date:message-id:x-mailer :in-reply-to:references:x-gm-message-state; bh=xpyQi1eUN/F7dtujQYC0TPomww4bxWS80XAKGa6t9Go=; b=nFLad2xJ1DxAtr1BjYs52RAL1goItRZhlHOUorqpT1QH5vntPNquGWvmUeRQvJiY9k AyfmB7SLOm6See6x28u9oUe2+uE4+GEwM8PCUAgIGWu+6RStPm7Yj8Z6dHlWnJCowgrV IRB1KqzC1urgIO38NI6SE1EnpsqUFufRLfXKW6NEsZpzOEN74oa3ScUYCzyOkM31UClg tCKtnp4vR3F/Crpw49rfB7ZNF53GAcHpU8dzCYaYkjI2ydw05tioW2xIklHClqySDx5d 6LViZBTM5MZzd4nk7aCFaNNYZ1shmOR337a4h7Jrob8vr+e/X4Fttb8uAOtxqAsOmigx 8GUQ== X-Received: by 10.220.220.134 with SMTP id hy6mr3015197vcb.2.1360933057770; Fri, 15 Feb 2013 04:57:37 -0800 (PST) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.221.4.5 with SMTP id oa5csp11369vcb; Fri, 15 Feb 2013 04:57:37 -0800 (PST) X-Received: by 10.180.88.40 with SMTP id bd8mr5808074wib.17.1360933056909; Fri, 15 Feb 2013 04:57:36 -0800 (PST) Received: from mail-wi0-f174.google.com (mail-wi0-f174.google.com [209.85.212.174]) by mx.google.com with ESMTPS id i3si1047627wiy.79.2013.02.15.04.57.36 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 15 Feb 2013 04:57:36 -0800 (PST) Received-SPF: neutral (google.com: 209.85.212.174 is neither permitted nor denied by best guess record for domain of lee.jones@linaro.org) client-ip=209.85.212.174; Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.212.174 is neither permitted nor denied by best guess record for domain of lee.jones@linaro.org) smtp.mail=lee.jones@linaro.org Received: by mail-wi0-f174.google.com with SMTP id hi8so1109100wib.13 for ; Fri, 15 Feb 2013 04:57:36 -0800 (PST) X-Received: by 10.180.103.161 with SMTP id fx1mr5738220wib.25.1360933056452; Fri, 15 Feb 2013 04:57:36 -0800 (PST) Received: from localhost.localdomain (cpc34-aztw25-2-0-cust250.18-1.cable.virginmedia.com. [86.16.136.251]) by mx.google.com with ESMTPS id j4sm2852410wiz.10.2013.02.15.04.57.34 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 15 Feb 2013 04:57:35 -0800 (PST) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, sameo@linux.intel.com Cc: arnd@arndb.de, linus.walleij@stericsson.com, Lee Jones , Jonas Aaberg Subject: [PATCH 08/35] mfd: ab8500-debug: Function to save all ABB registers to mem Date: Fri, 15 Feb 2013 12:56:39 +0000 Message-Id: <1360933026-30325-9-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1360933026-30325-1-git-send-email-lee.jones@linaro.org> References: <1360933026-30325-1-git-send-email-lee.jones@linaro.org> X-Gm-Message-State: ALoCoQkgyJcy0U5tmgjluF/WADiPIomch7BW92CXVPmHFcc5jMWSnnOneWhIzxMQC+tYPM7doNq6 Dump function that stores all readable ABB registers to a memory areas where they can be accessed from dump file. Signed-off-by: Jonas Aaberg Signed-off-by: Lee Jones Reviewed-by: Mattias WALLIN --- drivers/mfd/ab8500-debugfs.c | 50 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c index 18ff86b..250b77b 100644 --- a/drivers/mfd/ab8500-debugfs.c +++ b/drivers/mfd/ab8500-debugfs.c @@ -600,6 +600,56 @@ void ab8500_dump_all_banks(struct device *dev) } } +/* Space for 500 registers. */ +#define DUMP_MAX_REGS 700 +struct ab8500_register_dump +{ + u8 bank; + u8 reg; + u8 value; + int ret; +} ab8500_complete_register_dump[DUMP_MAX_REGS]; + +extern int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size); + +/* This shall only be called upon kernel panic! */ +void ab8500_dump_all_banks_to_mem(void) +{ + int i, r = 0; + u8 bank; + + pr_info("Saving all ABB registers at \"ab8500_complete_register_dump\" " + "for crash analyze.\n"); + + for (bank = 1; bank < AB8500_NUM_BANKS; bank++) { + for (i = 0; i < debug_ranges[bank].num_ranges; i++) { + u8 reg; + + for (reg = debug_ranges[bank].range[i].first; + reg <= debug_ranges[bank].range[i].last; + reg++) { + u8 value; + int err; + + err = prcmu_abb_read(bank, reg, &value, 1); + + ab8500_complete_register_dump[r].ret = err; + ab8500_complete_register_dump[r].bank = bank; + ab8500_complete_register_dump[r].reg = reg; + ab8500_complete_register_dump[r].value = value; + + r++; + + if (r >= DUMP_MAX_REGS) { + pr_err("%s: too many register to dump!\n", + __func__); + return; + } + } + } + } +} + static int ab8500_all_banks_open(struct inode *inode, struct file *file) { struct seq_file *s;