Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933354AbbFERhG (ORCPT ); Fri, 5 Jun 2015 13:37:06 -0400 Received: from smtp81.iad3a.emailsrvr.com ([173.203.187.81]:42613 "EHLO smtp81.iad3a.emailsrvr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932895AbbFERbA (ORCPT ); Fri, 5 Jun 2015 13:31:00 -0400 X-Sender-Id: abbotti@mev.co.uk From: Ian Abbott To: Cc: Greg Kroah-Hartman , Ian Abbott , H Hartley Sweeten , Subject: [PATCH 11/32] staging: comedi: das08: rename and rewrite DAS08_IRQ Date: Fri, 5 Jun 2015 18:30:14 +0100 Message-Id: <1433525435-12986-12-git-send-email-abbotti@mev.co.uk> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1433525435-12986-1-git-send-email-abbotti@mev.co.uk> References: <1433525435-12986-1-git-send-email-abbotti@mev.co.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1647 Lines: 38 The `DAS08_IRQ` macro contains a mask for the "IRQ" status bit. This is set to 1 when a rising edge is detected on the external interrupt input pin of the external connector (which may be jumpered to a pacer output). It is cleared by setting the "INTE" control bit to 0. It is not used on "JR" boards. Rename the macro to `DAS08_STATUS_IRQ` and add a comment. Also use the `BIT()` macro to define the value. Signed-off-by: Ian Abbott --- drivers/staging/comedi/drivers/das08.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c index 0484308..935bbfb 100644 --- a/drivers/staging/comedi/drivers/das08.c +++ b/drivers/staging/comedi/drivers/das08.c @@ -59,7 +59,12 @@ #define DAS08_AI_TRIG_REG 0x01 /* (W) AI software trigger */ #define DAS08_STATUS_REG 0x02 /* (R) status */ #define DAS08_STATUS_AI_BUSY BIT(7) /* AI conversion in progress */ -#define DAS08_IRQ (1<<3) +/* + * The IRQ status bit is set to 1 by a rising edge on the external interrupt + * input (which may be jumpered to the pacer output). It is cleared by + * setting the INTE control bit to 0. Not present on "JR" boards. + */ +#define DAS08_STATUS_IRQ BIT(3) /* latched interrupt input */ #define DAS08_IP(x) (((x)>>4)&0x7) #define DAS08_CONTROL 2 #define DAS08_MUX_MASK 0x7 -- 2.1.4 -- 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/