Commit d6332c12 authored by Damien Le Moal's avatar Damien Le Moal
Browse files

ata: pata_parport: Fix dstr module code indentation and style 



Fix the header, indentation and coding style in the dstr pata parport
protocol module to suppress warnings from smatch and other static code
analyzers.

No functional changes.

Signed-off-by: default avatarDamien Le Moal <dlemoal@kernel.org>
parent 630b64bc

drivers/ata/pata_parport/dstr.c

+154 −131
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-or-later

/*

        dstr.c    (c) 1997-8  Grant R. Guenther <grant@torque.net>

                              Under the terms of the GNU General Public License.



        dstr.c is a low-level protocol driver for the 

        DataStor EP2000 parallel to IDE adapter chip.



 * (c) 1997-1998  Grant R. Guenther <grant@torque.net>

 *

 * dstr.c is a low-level protocol driver for the DataStor EP2000 parallel

 * to IDE adapter chip.

 */



#include <linux/module.h>
@@ -16,177 +15,201 @@ 
#include <asm/io.h>

#include "pata_parport.h"



/* mode codes:  0  nybble reads, 8-bit writes

                1  8-bit reads and writes

                2  8-bit EPP mode

		3  EPP-16

		4  EPP-32

/*

 * mode codes:  0  nybble reads, 8-bit writes

 *		1  8-bit reads and writes

 *		2  8-bit EPP mode

 *		3  EPP-16

 *		4  EPP-32

 */



#define j44(a,b)  (((a>>3)&0x07)|((~a>>4)&0x08)|((b<<1)&0x70)|((~b)&0x80))

#define j44(a, b)  (((a >> 3) & 0x07) | ((~a >> 4) & 0x08) | \

		    ((b << 1) & 0x70) | ((~b) & 0x80))



#define P1	w2(5);w2(0xd);w2(5);w2(4);

#define P2	w2(5);w2(7);w2(5);w2(4);

#define P3      w2(6);w2(4);w2(6);w2(4);



/* cont = 0 - access the IDE register file 

   cont = 1 - access the IDE command set 

/*

 * cont = 0 - access the IDE register file

 * cont = 1 - access the IDE command set

 */



static int  cont_map[2] = { 0x20, 0x40 };



static int dstr_read_regr(struct pi_adapter *pi, int cont, int regr)



{       int     a, b, r;

{

	int a, b, r;



	r = regr + cont_map[cont];



	w0(0x81); P1;

	if (pi->mode) { w0(0x11); } else { w0(1); }

	if (pi->mode)

		w0(0x11);

	else

		w0(1);

	P2; w0(r); P1;



	switch (pi->mode) {



        case 0: w2(6); a = r1(); w2(4); w2(6); b = r1(); w2(4);

	case 0:

		w2(6); a = r1(); w2(4); w2(6); b = r1(); w2(4);

		return j44(a, b);



        case 1: w0(0); w2(0x26); a = r0(); w2(4);

	case 1:

		w0(0); w2(0x26); a = r0(); w2(4);

		return a;



	case 2:

	case 3:

        case 4: w2(0x24); a = r4(); w2(4);

	case 4:

		w2(0x24); a = r4(); w2(4);

		return a;



	}



	return -1;

}



static void dstr_write_regr(struct pi_adapter *pi, int cont, int regr, int val)



{       int  r;



        r = regr + cont_map[cont];

{

	int  r = regr + cont_map[cont];



	w0(0x81); P1;

	if (pi->mode >= 2) { w0(0x11); } else { w0(1); }

	if (pi->mode >= 2)

		w0(0x11);

	else

		w0(1);

	P2; w0(r); P1;



	switch (pi->mode)  {



	case 0:

        case 1: w0(val); w2(5); w2(7); w2(5); w2(4);

	case 1:

		w0(val); w2(5); w2(7); w2(5); w2(4);

		break;



	case 2:

	case 3:

        case 4: w4(val); 

	case 4:

		w4(val);

		break;

	}

}



#define  CCP(x)  w0(0xff);w2(0xc);w2(4);\

		 w0(0xaa);w0(0x55);w0(0);w0(0xff);w0(0x87);w0(0x78);\

		 w0(x);w2(5);w2(4);

#define  CCP(x)						\

	do {						\

		w0(0xff); w2(0xc); w2(4);		\

		w0(0xaa); w0(0x55); w0(0); w0(0xff);	\

		w0(0x87); w0(0x78);			\

		w0(x); w2(5); w2(4);			\

	} while (0)



static void dstr_connect(struct pi_adapter *pi)



{       pi->saved_r0 = r0();

{

	pi->saved_r0 = r0();

	pi->saved_r2 = r2();

	w2(4); CCP(0xe0); w0(0xff);

}



static void dstr_disconnect(struct pi_adapter *pi)



{       CCP(0x30);

{

	CCP(0x30);

	w0(pi->saved_r0);

	w2(pi->saved_r2);

}



static void dstr_read_block(struct pi_adapter *pi, char *buf, int count)



{       int     k, a, b;

{

	int k, a, b;



        w0(0x81); P1;

        if (pi->mode) { w0(0x19); } else { w0(9); }

	if (pi->mode)

		w0(0x19);

	else

		w0(9);

	P2; w0(0x82); P1; P3; w0(0x20); P1;



	switch (pi->mode) {



        case 0: for (k=0;k<count;k++) {

	case 0:

		for (k = 0; k < count; k++) {

			w2(6); a = r1(); w2(4);

			w2(6); b = r1(); w2(4);

			buf[k] = j44(a, b);

		}

		break;



        case 1: w0(0);

	case 1:

		w0(0);

		for (k = 0; k < count; k++) {

                        w2(0x26); buf[k] = r0(); w2(0x24);

			w2(0x26);

			buf[k] = r0();

			w2(0x24);

		}

		w2(4);

		break;



        case 2: w2(0x24); 

                for (k=0;k<count;k++) buf[k] = r4();

	case 2:

		w2(0x24);

		for (k = 0; k < count; k++)

			buf[k] = r4();

		w2(4);

		break;



        case 3: w2(0x24); 

                for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w();

	case 3:

		w2(0x24);

		for (k = 0; k < count / 2; k++)

			((u16 *)buf)[k] = r4w();

		w2(4);

		break;



        case 4: w2(0x24); 

                for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l();

	case 4:

		w2(0x24);

		for (k = 0; k < count / 4; k++)

			((u32 *)buf)[k] = r4l();

		w2(4);

		break;



	}

}



static void dstr_write_block(struct pi_adapter *pi, char *buf, int count)



{       int	k;

{

	int k;



	w0(0x81); P1;

        if (pi->mode) { w0(0x19); } else { w0(9); }

	if (pi->mode)

		w0(0x19);

	else

		w0(9);

	P2; w0(0x82); P1; P3; w0(0x20); P1;



	switch (pi->mode) {



	case 0:

        case 1: for (k=0;k<count;k++) {

                        w2(5); w0(buf[k]); w2(7);

	case 1:

		for (k = 0; k < count; k++) {

			w2(5);

			w0(buf[k]);

			w2(7);

		}

		w2(5); w2(4);

		break;



        case 2: w2(0xc5);

                for (k=0;k<count;k++) w4(buf[k]);

	case 2:

		w2(0xc5);

		for (k = 0; k < count; k++)

			w4(buf[k]);

		w2(0xc4);

		break;



        case 3: w2(0xc5);

                for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]);

	case 3:

		w2(0xc5);

		for (k = 0; k < count / 2; k++)

			w4w(((u16 *)buf)[k]);

		w2(0xc4);

		break;



        case 4: w2(0xc5);

                for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]);

	case 4:

		w2(0xc5);

		for (k = 0; k < count / 4; k++)

			w4l(((u32 *)buf)[k]);

		w2(0xc4);

		break;



	}

}





static void dstr_log_adapter(struct pi_adapter *pi)



{       char    *mode_string[5] = {"4-bit","8-bit","EPP-8",

				   "EPP-16","EPP-32"};

{

	char *mode_string[5] = { "4-bit", "8-bit", "EPP-8", "EPP-16", "EPP-32" };



	dev_info(&pi->dev, "DataStor EP2000 at 0x%x, mode %d (%s), delay %d\n",

	dev_info(&pi->dev,

		 "DataStor EP2000 at 0x%x, mode %d (%s), delay %d\n",

		 pi->port, pi->mode, mode_string[pi->mode], pi->delay);

}