Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030670AbbKDPhJ (ORCPT ); Wed, 4 Nov 2015 10:37:09 -0500 Received: from mail-pa0-f45.google.com ([209.85.220.45]:33541 "EHLO mail-pa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030654AbbKDPhE (ORCPT ); Wed, 4 Nov 2015 10:37:04 -0500 From: Joshua Clayton To: Alessandro Zummo , Alexandre Belloni Cc: rtc-linux@googlegroups.com, linux-kernel@vger.kernel.org, Joshua Clayton Subject: [PATCH 1/9] rtc-pcf2123: Document all registers and useful bits Date: Wed, 4 Nov 2015 07:36:32 -0800 Message-Id: X-Mailer: git-send-email 2.5.0 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2042 Lines: 57 Document all 16 registers in the pcf2123, as well as useful bit masks from the Control1 and seconds registers Signed-off-by: Joshua Clayton --- drivers/rtc/rtc-pcf2123.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c index d1953bb..7756210 100644 --- a/drivers/rtc/rtc-pcf2123.c +++ b/drivers/rtc/rtc-pcf2123.c @@ -47,6 +47,7 @@ #define DRV_VERSION "0.6" +/* REGISTERS */ #define PCF2123_REG_CTRL1 (0x00) /* Control Register 1 */ #define PCF2123_REG_CTRL2 (0x01) /* Control Register 2 */ #define PCF2123_REG_SC (0x02) /* datetime */ @@ -56,7 +57,27 @@ #define PCF2123_REG_DW (0x06) #define PCF2123_REG_MO (0x07) #define PCF2123_REG_YR (0x08) - +#define PCF2123_REG_ALRM_MN (0x09) /* Alarm Registers */ +#define PCF2123_REG_ALRM_HR (0x0a) +#define PCF2123_REG_ALRM_DM (0x0b) +#define PCF2123_REG_ALRM_DW (0x0c) +#define PCF2123_REG_OFFSET (0x0d) /* Clock Rate Offset Register */ +#define PCF2123_REG_TMR_CLKOUT (0x0e) /* Timer Registers */ +#define PCF2123_REG_CTDWN_TMR (0x0f) +#define PCF2123_REG_MAX (PCF2123_REG_CTDWN_TMR) + +/* PCF2123_REG_CTRL1 BITS */ +#define CTRL1_CLEAR (0x00) /* Clear */ +#define CTRL1_CORRECTION_INT (0x02) /* Correction Interrupt */ +#define CTRL1_12_HOUR (0x04) /* 12 hour time */ +#define CTRL1_STOP (0x20) /* Stop the clock */ +#define CTRL1_SW_RESET (0x58) /* Software reset */ +#define CTRL1_EXT_TEST (0x80) /* External Clock Test mode */ + +/* PCF2123_REG_SC BITS */ +#define OSC_HAS_STOPPED (0x80) /* Clock has been stopped */ + +/* READ/WRITE ADDRESS BITS */ #define PCF2123_SUBADDR (1 << 4) #define PCF2123_WRITE ((0 << 7) | PCF2123_SUBADDR) #define PCF2123_READ ((1 << 7) | PCF2123_SUBADDR) -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/