diff options
Diffstat (limited to 'drivers/ata/pata_parport/aten.c')
| -rw-r--r-- | drivers/ata/pata_parport/aten.c | 103 |
1 files changed, 53 insertions, 50 deletions
diff --git a/drivers/ata/pata_parport/aten.c b/drivers/ata/pata_parport/aten.c index 1bd248c42f8b..8328a49a95ef 100644 --- a/drivers/ata/pata_parport/aten.c +++ b/drivers/ata/pata_parport/aten.c @@ -1,13 +1,12 @@ -/* - aten.c (c) 1997-8 Grant R. Guenther <grant@torque.net> - Under the terms of the GNU General Public License. - - aten.c is a low-level protocol driver for the ATEN EH-100 - parallel port adapter. The EH-100 supports 4-bit and 8-bit - modes only. There is also an EH-132 which supports EPP mode - transfers. The EH-132 is not yet supported. - -*/ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * (c) 1997-8 Grant R. Guenther <grant@torque.net> + * + * aten.c is a low-level protocol driver for the ATEN EH-100 + * parallel port adapter. The EH-100 supports 4-bit and 8-bit + * modes only. There is also an EH-132 which supports EPP mode + * transfers. The EH-132 is not yet supported. + */ #include <linux/module.h> #include <linux/init.h> @@ -20,36 +19,36 @@ #define j44(a,b) ((((a>>4)&0x0f)|(b&0xf0))^0x88) -/* 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] = { 0x08, 0x20 }; static void aten_write_regr(struct pi_adapter *pi, int cont, int regr, int val) - -{ int r; - - r = regr + cont_map[cont] + 0x80; +{ + int r = regr + cont_map[cont] + 0x80; w0(r); w2(0xe); w2(6); w0(val); w2(7); w2(6); w2(0xc); } static int aten_read_regr(struct pi_adapter *pi, int cont, int regr) +{ + int a, b, r; -{ int a, b, r; - - r = regr + cont_map[cont] + 0x40; + r = regr + cont_map[cont] + 0x40; switch (pi->mode) { - case 0: w0(r); w2(0xe); w2(6); + case 0: + w0(r); w2(0xe); w2(6); w2(7); w2(6); w2(0); a = r1(); w0(0x10); b = r1(); w2(0xc); return j44(a,b); - case 1: r |= 0x10; - w0(r); w2(0xe); w2(6); w0(0xff); + case 1: + r |= 0x10; + w0(r); w2(0xe); w2(6); w0(0xff); w2(0x27); w2(0x26); w2(0x20); a = r0(); w2(0x26); w2(0xc); @@ -59,27 +58,30 @@ static int aten_read_regr(struct pi_adapter *pi, int cont, int regr) } static void aten_read_block(struct pi_adapter *pi, char *buf, int count) - -{ int k, a, b, c, d; +{ + int k, a, b, c, d; switch (pi->mode) { - case 0: w0(0x48); w2(0xe); w2(6); - for (k=0;k<count/2;k++) { + case 0: + w0(0x48); w2(0xe); w2(6); + for (k = 0; k < count / 2; k++) { w2(7); w2(6); w2(2); a = r1(); w0(0x58); b = r1(); w2(0); d = r1(); w0(0x48); c = r1(); - buf[2*k] = j44(c,d); - buf[2*k+1] = j44(a,b); + buf[2 * k] = j44(c, d); + buf[2 * k + 1] = j44(a, b); } w2(0xc); break; - case 1: w0(0x58); w2(0xe); w2(6); - for (k=0;k<count/2;k++) { + case 1: + w0(0x58); w2(0xe); w2(6); + for (k = 0; k < count / 2; k++) { w2(0x27); w2(0x26); w2(0x22); a = r0(); w2(0x20); b = r0(); - buf[2*k] = b; buf[2*k+1] = a; + buf[2 * k] = b; + buf[2 * k + 1] = a; } w2(0x26); w2(0xc); break; @@ -87,36 +89,37 @@ static void aten_read_block(struct pi_adapter *pi, char *buf, int count) } static void aten_write_block(struct pi_adapter *pi, char *buf, int count) - -{ int k; +{ + int k; w0(0x88); w2(0xe); w2(6); - for (k=0;k<count/2;k++) { - w0(buf[2*k+1]); w2(0xe); w2(6); - w0(buf[2*k]); w2(7); w2(6); + for (k = 0; k < count / 2; k++) { + w0(buf[2 * k + 1]); w2(0xe); w2(6); + w0(buf[2 * k]); w2(7); w2(6); } w2(0xc); } static void aten_connect(struct pi_adapter *pi) - -{ pi->saved_r0 = r0(); - pi->saved_r2 = r2(); - w2(0xc); +{ + pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + w2(0xc); } static void aten_disconnect(struct pi_adapter *pi) - -{ w0(pi->saved_r0); - w2(pi->saved_r2); -} +{ + w0(pi->saved_r0); + w2(pi->saved_r2); +} static void aten_log_adapter(struct pi_adapter *pi) +{ + char *mode_string[2] = { "4-bit", "8-bit" }; -{ char *mode_string[2] = {"4-bit","8-bit"}; - - dev_info(&pi->dev, "ATEN EH-100 at 0x%x, mode %d (%s), delay %d\n", - pi->port, pi->mode, mode_string[pi->mode], pi->delay); + dev_info(&pi->dev, + "ATEN EH-100 at 0x%x, mode %d (%s), delay %d\n", + pi->port, pi->mode, mode_string[pi->mode], pi->delay); } static struct pi_protocol aten = { |