From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 3 May 2016 19:29:44 +0000 (-0700)
Subject: staging: comedi: das16m1: tidy up analog input data register defines
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a782a851e3ba67e4bd8360b1429cde3ece7d6957;p=openwrt%2Fstaging%2Fblogic.git

staging: comedi: das16m1: tidy up analog input data register defines

Convert the inline helper munge_sample() into a macro and rename the
defines for the analog input data register/bits. Use the register define
when accessing this register instead of just dev->iobase.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/comedi/drivers/das16m1.c b/drivers/staging/comedi/drivers/das16m1.c
index 6638a9a016dd..2c7c86ca81a2 100644
--- a/drivers/staging/comedi/drivers/das16m1.c
+++ b/drivers/staging/comedi/drivers/das16m1.c
@@ -63,8 +63,9 @@
 /*
  * Register map (dev->iobase)
  */
-#define DAS16M1_AI             0	/*  16-bit wide register */
-#define   AI_CHAN(x)             ((x) & 0xf)
+#define DAS16M1_AI_REG			0x00	/* 16-bit register */
+#define DAS16M1_AI_TO_CHAN(x)		(((x) >> 0) & 0xf)
+#define DAS16M1_AI_TO_SAMPLE(x)		(((x) >> 4) & 0xfff)
 #define DAS16M1_CS             2
 #define   EXT_TRIG_BIT           0x1
 #define   OVRUN                  0x20
@@ -109,17 +110,12 @@ struct das16m1_private_struct {
 	unsigned long extra_iobase;
 };
 
-static inline unsigned short munge_sample(unsigned short data)
-{
-	return (data >> 4) & 0xfff;
-}
-
 static void munge_sample_array(unsigned short *array, unsigned int num_elements)
 {
 	unsigned int i;
 
 	for (i = 0; i < num_elements; i++)
-		array[i] = munge_sample(array[i]);
+		array[i] = DAS16M1_AI_TO_SAMPLE(array[i]);
 }
 
 static int das16m1_ai_check_chanlist(struct comedi_device *dev,
@@ -331,16 +327,19 @@ static int das16m1_ai_rinsn(struct comedi_device *dev,
 	outb(byte, dev->iobase + DAS16M1_QUEUE_DATA);
 
 	for (n = 0; n < insn->n; n++) {
+		unsigned short val;
+
 		/* clear IRQDATA bit */
 		outb(0, dev->iobase + DAS16M1_CLEAR_INTR);
 		/* trigger conversion */
-		outb(0, dev->iobase);
+		outb(0, dev->iobase + DAS16M1_AI_REG);
 
 		ret = comedi_timeout(dev, s, insn, das16m1_ai_eoc, 0);
 		if (ret)
 			return ret;
 
-		data[n] = munge_sample(inw(dev->iobase));
+		val = inw(dev->iobase + DAS16M1_AI_REG);
+		data[n] = DAS16M1_AI_TO_SAMPLE(val);
 	}
 
 	return n;