From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936029Ab3BONF1 (ORCPT ); Fri, 15 Feb 2013 08:05:27 -0500 Received: from mail-wi0-f176.google.com ([209.85.212.176]:58545 "EHLO mail-wi0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161738Ab3BOM5h (ORCPT ); Fri, 15 Feb 2013 07:57:37 -0500 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> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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; -- 1.7.10.4