From patchwork Thu Jul 27 16:43:08 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Divagar Mohandass X-Patchwork-Id: 794528 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-i2c-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3xJHrr3ccgz9s2G for ; Fri, 28 Jul 2017 02:45:00 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751571AbdG0QoF (ORCPT ); Thu, 27 Jul 2017 12:44:05 -0400 Received: from mga06.intel.com ([134.134.136.31]:14468 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751451AbdG0Qnd (ORCPT ); Thu, 27 Jul 2017 12:43:33 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP; 27 Jul 2017 09:43:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.40,421,1496127600"; d="scan'208";a="1177060546" Received: from unknown (HELO localhost.localdomain) ([10.223.165.17]) by fmsmga001.fm.intel.com with ESMTP; 27 Jul 2017 09:43:16 -0700 From: divagar.mohandass@intel.com To: robh+dt@kernel.org, mark.rutland@arm.com, wsa@the-dreams.de, devicetree@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Cc: rajmohan.mani@intel.com, Divagar Mohandass Subject: [PATCH 2/3] eeprom: at24: add support to fetch device property "size" Date: Thu, 27 Jul 2017 22:13:08 +0530 Message-Id: <1501173789-25959-3-git-send-email-divagar.mohandass@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1501173789-25959-1-git-send-email-divagar.mohandass@intel.com> References: <1501173789-25959-1-git-send-email-divagar.mohandass@intel.com> Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org From: Divagar Mohandass This adds support to fetch device property "size" from _DSD. There is a CAT24C16/GT24C16S NVMEM chip part of the OV13858 camera module and it is connected to i2c bus on Intel KBL board. This device will use the existing ACPI ID INT3499 and platform fw will expose "read-only", "pagesize" and "size" props via _DSD. Signed-off-by: Divagar Mohandass --- drivers/misc/eeprom/at24.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 764ff5df..2199c42 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -570,6 +570,10 @@ static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip) if (device_property_present(dev, "read-only")) chip->flags |= AT24_FLAG_READONLY; + err = device_property_read_u32(dev, "size", &val); + if (!err) + chip->byte_len = val; + err = device_property_read_u32(dev, "pagesize", &val); if (!err) { chip->page_size = val;