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Commit 917d11a4 authored by Zhaoxiu Zeng's avatar Zhaoxiu Zeng Committed by Mauro Carvalho Chehab
Browse files

[media] mt2063: use lib gcd 



This patch removes the local MT2063_gcd function, uses lib gcd instead

Signed-off-by: default avatarZhaoxiu Zeng <zhaoxiu.zeng@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent d10f89cc

drivers/media/tuners/mt2063.c

+5 −25
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include <linux/module.h>

#include <linux/string.h>

#include <linux/videodev2.h>

#include <linux/gcd.h>



#include "mt2063.h"
@@ -664,27 +665,6 @@ static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info) 
	return f_Center + (bestDiff * f_Step);

}



/**

 * gcd() - Uses Euclid's algorithm

 *

 * @u, @v:	Unsigned values whose GCD is desired.

 *

 * Returns THE greatest common divisor of u and v, if either value is 0,

 * the other value is returned as the result.

 */

static u32 MT2063_gcd(u32 u, u32 v)

{

	u32 r;



	while (v != 0) {

		r = u % v;

		u = v;

		v = r;

	}



	return u;

}



/**

 * IsSpurInBand() - Checks to see if a spur will be present within the IF's

 *                  bandwidth. (fIFOut +/- fIFBW, -fIFOut +/- fIFBW)
@@ -731,12 +711,12 @@ static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info, 
	 ** of f_LO1, f_LO2 and the edge value.  Use the larger of this

	 ** gcd-based scale factor or f_Scale.

	 */

	lo_gcd = MT2063_gcd(f_LO1, f_LO2);

	gd_Scale = max((u32) MT2063_gcd(lo_gcd, d), f_Scale);

	lo_gcd = gcd(f_LO1, f_LO2);

	gd_Scale = max((u32) gcd(lo_gcd, d), f_Scale);

	hgds = gd_Scale / 2;

	gc_Scale = max((u32) MT2063_gcd(lo_gcd, c), f_Scale);

	gc_Scale = max((u32) gcd(lo_gcd, c), f_Scale);

	hgcs = gc_Scale / 2;

	gf_Scale = max((u32) MT2063_gcd(lo_gcd, f), f_Scale);

	gf_Scale = max((u32) gcd(lo_gcd, f), f_Scale);

	hgfs = gf_Scale / 2;



	n0 = DIV_ROUND_UP(f_LO2 - d, f_LO1 - f_LO2);