diff options
Diffstat (limited to 'drivers/ata/pata_parport/ktti.c')
| -rw-r--r-- | drivers/ata/pata_parport/ktti.c | 85 |
1 files changed, 40 insertions, 45 deletions
diff --git a/drivers/ata/pata_parport/ktti.c b/drivers/ata/pata_parport/ktti.c index 4890b1f12348..bca6c20ef617 100644 --- a/drivers/ata/pata_parport/ktti.c +++ b/drivers/ata/pata_parport/ktti.c @@ -1,12 +1,11 @@ -/* - ktti.c (c) 1998 Grant R. Guenther <grant@torque.net> - Under the terms of the GNU General Public License. - - ktti.c is a low-level protocol driver for the KT Technology - parallel port adapter. This adapter is used in the "PHd" - portable hard-drives. As far as I can tell, this device - supports 4-bit mode _only_. - +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * (c) 1998 Grant R. Guenther <grant@torque.net> + * + * ktti.c is a low-level protocol driver for the KT Technology + * parallel port adapter. This adapter is used in the "PHd" + * portable hard-drives. As far as I can tell, this device + * supports 4-bit mode _only_. */ #include <linux/module.h> @@ -18,80 +17,76 @@ #include <asm/io.h> #include "pata_parport.h" -#define j44(a,b) (((a>>4)&0x0f)|(b&0xf0)) +#define j44(a, b) (((a >> 4) & 0x0f) | (b & 0xf0)) -/* cont = 0 - access the IDE register file - cont = 1 - access the IDE command set -*/ - -static int cont_map[2] = { 0x10, 0x08 }; +/* + * cont = 0 - access the IDE register file + * cont = 1 - access the IDE command set + */ +static int cont_map[2] = { 0x10, 0x08 }; static void ktti_write_regr(struct pi_adapter *pi, int cont, int regr, int val) +{ + int r = regr + cont_map[cont]; -{ int r; - - r = regr + cont_map[cont]; - - w0(r); w2(0xb); w2(0xa); w2(3); w2(6); + w0(r); w2(0xb); w2(0xa); w2(3); w2(6); w0(val); w2(3); w0(0); w2(6); w2(0xb); } static int ktti_read_regr(struct pi_adapter *pi, int cont, int regr) - -{ int a, b, r; +{ + int a, b, r; r = regr + cont_map[cont]; - w0(r); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9); + w0(r); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9); a = r1(); w2(0xc); b = r1(); w2(9); w2(0xc); w2(9); - return j44(a,b); - + return j44(a, b); } static void ktti_read_block(struct pi_adapter *pi, char *buf, int count) +{ + int k, a, b; -{ int k, a, b; - - for (k=0;k<count/2;k++) { + for (k = 0; k < count / 2; k++) { w0(0x10); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9); a = r1(); w2(0xc); b = r1(); w2(9); - buf[2*k] = j44(a,b); + buf[2*k] = j44(a, b); a = r1(); w2(0xc); b = r1(); w2(9); - buf[2*k+1] = j44(a,b); + buf[2*k+1] = j44(a, b); } } static void ktti_write_block(struct pi_adapter *pi, char *buf, int count) +{ + int k; -{ int k; - - for (k=0;k<count/2;k++) { + for (k = 0; k < count / 2; k++) { w0(0x10); w2(0xb); w2(0xa); w2(3); w2(6); - w0(buf[2*k]); w2(3); - w0(buf[2*k+1]); w2(6); + w0(buf[2 * k]); w2(3); + w0(buf[2 * k + 1]); w2(6); w2(0xb); } } static void ktti_connect(struct pi_adapter *pi) - -{ pi->saved_r0 = r0(); - pi->saved_r2 = r2(); - w2(0xb); w2(0xa); w0(0); w2(3); w2(6); +{ + pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + w2(0xb); w2(0xa); w0(0); w2(3); w2(6); } static void ktti_disconnect(struct pi_adapter *pi) - -{ w2(0xb); w2(0xa); w0(0xa0); w2(3); w2(4); +{ + w2(0xb); w2(0xa); w0(0xa0); w2(3); w2(4); w0(pi->saved_r0); - w2(pi->saved_r2); -} + w2(pi->saved_r2); +} static void ktti_log_adapter(struct pi_adapter *pi) - { dev_info(&pi->dev, "KT adapter at 0x%x, delay %d\n", - pi->port, pi->delay); + pi->port, pi->delay); } static struct pi_protocol ktti = { |