From patchwork Tue Nov 13 13:22:04 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Majewski?= X-Patchwork-Id: 198655 X-Patchwork-Delegate: agust@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 618BE2C00C8 for ; Wed, 14 Nov 2012 00:24:55 +1100 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 120924A18E; Tue, 13 Nov 2012 14:24:43 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DbR0zUnY1iyG; Tue, 13 Nov 2012 14:24:42 +0100 (CET) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id AD8154A1B3; Tue, 13 Nov 2012 14:23:41 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 8C64A4A13D for ; Tue, 13 Nov 2012 14:23:33 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZEaO3xS7egVa for ; Tue, 13 Nov 2012 14:23:32 +0100 (CET) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from mailout1.samsung.com (mailout1.samsung.com [203.254.224.24]) by theia.denx.de (Postfix) with ESMTP id 7C39F4A161 for ; Tue, 13 Nov 2012 14:23:16 +0100 (CET) Received: from epcpsbgm2.samsung.com (epcpsbgm2 [203.254.230.27]) by mailout1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MDF00IJDH5HT1C0@mailout1.samsung.com> for u-boot@lists.denx.de; Tue, 13 Nov 2012 22:23:15 +0900 (KST) X-AuditID: cbfee61b-b7f616d00000319b-35-50a249c2cfd2 Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id 25.46.12699.2C942A05; Tue, 13 Nov 2012 22:23:14 +0900 (KST) Received: from mcdsrvbld02.digital.local ([106.116.37.23]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MDF00AK5H593U10@mmp1.samsung.com> for u-boot@lists.denx.de; Tue, 13 Nov 2012 22:23:14 +0900 (KST) From: Lukasz Majewski To: u-boot@lists.denx.de Date: Tue, 13 Nov 2012 14:22:04 +0100 Message-id: <1352812937-15998-14-git-send-email-l.majewski@samsung.com> X-Mailer: git-send-email 1.7.10 In-reply-to: <1352812937-15998-1-git-send-email-l.majewski@samsung.com> References: <1352812937-15998-1-git-send-email-l.majewski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMJMWRmVeSWpSXmKPExsVy+t9jAd1DnosCDM7Ms7F4u7eT3YHR4+yd HYwBjFFcNimpOZllqUX6dglcGU8WXmItuM9Tce7bbKYGxq1cXYycHBICJhJtM1azQthiEhfu rWfrYuTiEBJYxChxcNZcVghnMZNE5+42ZpAqNgE9ic93nzKB2CICEhK/+q8yghQxC9xhlPh/ 7QVYQlggTqJ1+ws2EJtFQFViwYnzYM28Au4Sdx51Qq2Tl3h6vw+ohoODEyj+5zxYq5CAm8Tm nUeZJzDyLmBkWMUomlqQXFCclJ5rpFecmFtcmpeul5yfu4kR7PVn0jsYVzVYHGIU4GBU4uFV tFwYIMSaWFZcmXuIUYKDWUmE97zbogAh3pTEyqrUovz4otKc1OJDjNIcLErivM0eKQFCAumJ JanZqakFqUUwWSYOTqkGxoiHwWyTisPfi9jVZ2c0HUmaceDQv49746zf15w33BNVcG0HB/9C JmXmMEmf0lPpRieuntH5V7L7gzrD2QlzMvvX5b37W+IQoiUYu+1JwX5HQ83Y92UO3C62+bHK 2h94zHZ/s26yUJ+52vKQ8syZMb1RDafW1Ds+0dtp+P+I/+1HU//LWje1KrEUZyQaajEXFScC AKEBmPL2AQAA Cc: Kyungmin Park , Tom Rini Subject: [U-Boot] [PATCH v7 13/26] pmic:max8997: Function for calculating LDO internal register value X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.11 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de Function for calculating LDO internal register value from passed micro Volt. Signed-off-by: Lukasz Majewski Signed-off-by: Kyungmin Park Cc: Stefano Babic --- Changes for v2: - MAX8997_LDO_MAX_VAL defined Changes for v3: - None Changes for v4: - None Changes for v5: - None Changes for v6: - None Changes for v7: - None --- drivers/power/pmic/pmic_max8997.c | 16 ++++++++++++++++ include/power/max8997_pmic.h | 2 ++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/drivers/power/pmic/pmic_max8997.c b/drivers/power/pmic/pmic_max8997.c index 7fe1b53..2e46884 100644 --- a/drivers/power/pmic/pmic_max8997.c +++ b/drivers/power/pmic/pmic_max8997.c @@ -27,6 +27,22 @@ #include #include +unsigned char max8997_reg_ldo(int uV) +{ + unsigned char ret; + if (uV <= 800000) + return 0; + if (uV >= 3950000) + return MAX8997_LDO_MAX_VAL; + ret = (uV - 800000) / 50000; + if (ret > MAX8997_LDO_MAX_VAL) { + printf("MAX8997 LDO SETTING ERROR (%duV) -> %u\n", uV, ret); + ret = MAX8997_LDO_MAX_VAL; + } + + return ret; +} + int pmic_init(unsigned char bus) { static const char name[] = "MAX8997_PMIC"; diff --git a/include/power/max8997_pmic.h b/include/power/max8997_pmic.h index 1db7deb..03cac04 100644 --- a/include/power/max8997_pmic.h +++ b/include/power/max8997_pmic.h @@ -200,4 +200,6 @@ enum { EN_LDO = (0x3 << 6), }; +#define MAX8997_LDO_MAX_VAL 0x3F +unsigned char max8997_reg_ldo(int uV); #endif /* __MAX8997_PMIC_H_ */