From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756501AbaBRPE7 (ORCPT ); Tue, 18 Feb 2014 10:04:59 -0500 Received: from mail-wg0-f42.google.com ([74.125.82.42]:55385 "EHLO mail-wg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756093AbaBRO45 (ORCPT ); Tue, 18 Feb 2014 09:56:57 -0500 From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: lee.jones@linaro.org, DCG_UPD_stlinux_kernel@list.st.com, dwmw2@infradead.org, linux-mtd@lists.infradead.org, computersforpeace@gmail.com, Angus.Clark@st.com Subject: [PATCH 11/35] mtd: st_spi_fsm: Use device size to determine address width Date: Tue, 18 Feb 2014 14:55:38 +0000 Message-Id: <1392735362-1245-12-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1392735362-1245-1-git-send-email-lee.jones@linaro.org> References: <1392735362-1245-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Take some known parameters, namely size and number of sectors and use them to determine weather a device can support 32bit addressing or not. If it can, set the associated flash capability flag for latter use. Acked-by Angus Clark Signed-off-by: Lee Jones --- drivers/mtd/devices/st_spi_fsm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index 68fa12e..1d7a13a0 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -670,6 +670,10 @@ static int stfsm_probe(struct platform_device *pdev) return -ENODEV; fsm->info = info; + /* Use device size to determine address width */ + if (info->sector_size * info->n_sectors > 0xFFFFFF) + info->flags |= FLASH_FLAG_32BIT_ADDR; + platform_set_drvdata(pdev, fsm); fsm->mtd.dev.parent = &pdev->dev; -- 1.8.3.2