From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Guo Subject: [PATCH v2 09/10] ARM: mx28: read fec mac address from ocotp Date: Tue, 4 Jan 2011 17:24:15 +0800 Message-ID: <1294133056-21195-10-git-send-email-shawn.guo@freescale.com> References: <1294133056-21195-1-git-send-email-shawn.guo@freescale.com> Mime-Version: 1.0 Content-Type: text/plain To: , , , , , , , Received: from db3ehsobe005.messaging.microsoft.com ([213.199.154.143]:2852 "EHLO DB3EHSOBE005.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751916Ab1ADJXa (ORCPT ); Tue, 4 Jan 2011 04:23:30 -0500 In-Reply-To: <1294133056-21195-1-git-send-email-shawn.guo@freescale.com> Sender: netdev-owner@vger.kernel.org List-ID: Read fec mac address from ocotp and save it into fec_platform_data mac field for fec driver to use. Signed-off-by: Shawn Guo --- Changes for v2: - It's not necessary to remove "const" for fec_platform_data from platform-fec.c and devices-common.h, so add it back. - Hard-coding Freescale OUI (00:04:9f) instead of just the first two two octets. - Correct the return of mx28evk_fec_get_mac() and check it with caller arch/arm/mach-mxs/mach-mx28evk.c | 32 ++++++++++++++++++++++++++++++++ 1 files changed, 32 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c index def6519..54fa512 100644 --- a/arch/arm/mach-mxs/mach-mx28evk.c +++ b/arch/arm/mach-mxs/mach-mx28evk.c @@ -129,12 +129,44 @@ static struct fec_platform_data mx28_fec_pdata[] = { }, }; +static int __init mx28evk_fec_get_mac(void) +{ + int i, ret; + u32 val; + + /* + * OCOTP only stores the last 4 octets for each mac address, + * so hard-code Freescale OUI (00:04:9f) here. + */ + for (i = 0; i < 2; i++) { + ret = mxs_read_ocotp(0x20 + i * 0x10, 1, &val); + if (ret) + goto error; + + mx28_fec_pdata[i].mac[0] = 0x00; + mx28_fec_pdata[i].mac[1] = 0x04; + mx28_fec_pdata[i].mac[2] = 0x9f; + mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff; + mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff; + mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff; + } + + return 0; + +error: + pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__); + return ret; +} + static void __init mx28evk_init(void) { mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads)); mx28_add_duart(); + if (mx28evk_fec_get_mac()) + pr_warn("%s: failed on fec mac setup\n", __func__); + mx28evk_fec_reset(); mx28_add_fec(0, &mx28_fec_pdata[0]); #ifdef CONFIG_FEC2 -- 1.7.1