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ata: pata_parport-bpck6: use parport_frob_control and remove CUR_CTRL

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Use parport_frob_control instead of manually maintaining control
register state.

Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
This commit is contained in:
Ondrej Zary 2023-03-07 23:46:08 +01:00 committed by Damien Le Moal
parent e9090fd6ed
commit f34536f5ec
1 changed files with 36 additions and 84 deletions
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120
drivers/ata/pata_parport/ppc6lnx.c
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@ -15,14 +15,6 @@
//***************************************************************************
#define port_int 16
#define ECR_EPP 0x80
#define ECR_BI 0x20
//***************************************************************************
// 60772 Commands
#define ACCESS_REG 0x00
@ -57,7 +49,6 @@
//***************************************************************************
#define CUR_CTRL (((u8 *)&pi->private)[0])
#define PPC_FLAGS (((u8 *)&pi->private)[1])
//***************************************************************************
@ -109,11 +100,7 @@ static int ppc6_select(struct pi_adapter *pi)
pi->saved_r2 = parport_read_control(pi->pardev->port) & 0x5F; // readback ctrl
CUR_CTRL = pi->saved_r2;
CUR_CTRL |= PARPORT_CONTROL_SELECT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_SELECT, PARPORT_CONTROL_SELECT);
if (pi->saved_r0 == 'b')
parport_write_data(pi->pardev->port, 'x');
@ -123,13 +110,9 @@ static int ppc6_select(struct pi_adapter *pi)
parport_write_data(pi->pardev->port, pi->unit);
parport_write_data(pi->pardev->port, ~pi->unit);
CUR_CTRL &= ~PARPORT_CONTROL_SELECT;
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_SELECT, 0);
parport_write_control(pi->pardev->port, CUR_CTRL);
CUR_CTRL = (CUR_CTRL & port_int) | PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_write_control(pi->pardev->port, PARPORT_CONTROL_INIT);
i = mode_map[pi->mode] & 0x0C;
@ -138,15 +121,11 @@ static int ppc6_select(struct pi_adapter *pi)
parport_write_data(pi->pardev->port, i);
CUR_CTRL |= PARPORT_CONTROL_SELECT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_SELECT, PARPORT_CONTROL_SELECT);
// DELAY
CUR_CTRL |= PARPORT_CONTROL_AUTOFD;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_AUTOFD, PARPORT_CONTROL_AUTOFD);
j = ((i & 0x08) << 4) | ((i & 0x07) << 3);
@ -154,20 +133,18 @@ static int ppc6_select(struct pi_adapter *pi)
if (j == k)
{
CUR_CTRL &= ~PARPORT_CONTROL_AUTOFD;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_AUTOFD, 0);
k = (parport_read_status(pi->pardev->port) & 0xB8) ^ 0xB8;
if (j == k)
{
if (i & 4) // EPP
CUR_CTRL &= ~(PARPORT_CONTROL_SELECT | PARPORT_CONTROL_INIT);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_SELECT | PARPORT_CONTROL_INIT, 0);
else // PPC/ECP
CUR_CTRL &= ~PARPORT_CONTROL_SELECT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_SELECT, 0);
return(1);
}
@ -185,11 +162,11 @@ static int ppc6_select(struct pi_adapter *pi)
static void ppc6_deselect(struct pi_adapter *pi)
{
if (mode_map[pi->mode] & 4) // EPP
CUR_CTRL |= PARPORT_CONTROL_INIT;
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_INIT, PARPORT_CONTROL_INIT);
else // PPC/ECP
CUR_CTRL |= PARPORT_CONTROL_SELECT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_SELECT, PARPORT_CONTROL_SELECT);
parport_write_data(pi->pardev->port, pi->saved_r0);
@ -210,10 +187,7 @@ static void ppc6_send_cmd(struct pi_adapter *pi, u8 cmd)
case PPCMODE_BI_FW :
{
parport_write_data(pi->pardev->port, cmd);
CUR_CTRL ^= PARPORT_CONTROL_AUTOFD;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, 0, PARPORT_CONTROL_AUTOFD);
break;
}
@ -241,10 +215,7 @@ static void ppc6_wr_data_byte(struct pi_adapter *pi, u8 data)
case PPCMODE_BI_FW :
{
parport_write_data(pi->pardev->port, data);
CUR_CTRL ^= PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, 0, PARPORT_CONTROL_INIT);
break;
}
@ -271,9 +242,8 @@ static u8 ppc6_rd_data_byte(struct pi_adapter *pi)
case PPCMODE_UNI_SW :
case PPCMODE_UNI_FW :
{
CUR_CTRL = (CUR_CTRL & ~PARPORT_CONTROL_STROBE) ^ PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_STROBE, PARPORT_CONTROL_INIT);
// DELAY
@ -281,9 +251,8 @@ static u8 ppc6_rd_data_byte(struct pi_adapter *pi)
data = ((data & 0x80) >> 1) | ((data & 0x38) >> 3);
CUR_CTRL |= PARPORT_CONTROL_STROBE;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_STROBE, PARPORT_CONTROL_STROBE);
// DELAY
@ -297,15 +266,12 @@ static u8 ppc6_rd_data_byte(struct pi_adapter *pi)
{
parport_data_reverse(pi->pardev->port);
CUR_CTRL = (CUR_CTRL | PARPORT_CONTROL_STROBE) ^ PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_STROBE,
PARPORT_CONTROL_STROBE | PARPORT_CONTROL_INIT);
data = parport_read_data(pi->pardev->port);
CUR_CTRL &= ~PARPORT_CONTROL_STROBE;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_STROBE, 0);
parport_data_forward(pi->pardev->port);
@ -356,10 +322,8 @@ static void ppc6_rd_data_blk(struct pi_adapter *pi, u8 *data, long count)
{
u8 d;
CUR_CTRL = (CUR_CTRL & ~PARPORT_CONTROL_STROBE)
^ PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_STROBE, PARPORT_CONTROL_INIT);
// DELAY
@ -367,9 +331,8 @@ static void ppc6_rd_data_blk(struct pi_adapter *pi, u8 *data, long count)
d = ((d & 0x80) >> 1) | ((d & 0x38) >> 3);
CUR_CTRL |= PARPORT_CONTROL_STROBE;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_STROBE, PARPORT_CONTROL_STROBE);
// DELAY
@ -387,21 +350,16 @@ static void ppc6_rd_data_blk(struct pi_adapter *pi, u8 *data, long count)
{
parport_data_reverse(pi->pardev->port);
CUR_CTRL |= PARPORT_CONTROL_STROBE;
while(count)
{
CUR_CTRL ^= PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_STROBE,
PARPORT_CONTROL_STROBE | PARPORT_CONTROL_INIT);
*data++ = parport_read_data(pi->pardev->port);
count--;
}
CUR_CTRL &= ~PARPORT_CONTROL_STROBE;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_STROBE, 0);
parport_data_forward(pi->pardev->port);
@ -467,9 +425,7 @@ static void ppc6_wr_data_blk(struct pi_adapter *pi, u8 *data, long count)
{
parport_write_data(pi->pardev->port, *data++);
CUR_CTRL ^= PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, 0, PARPORT_CONTROL_INIT);
}
break;
@ -482,9 +438,8 @@ static void ppc6_wr_data_blk(struct pi_adapter *pi, u8 *data, long count)
ppc6_send_cmd(pi, CMD_PREFIX_SET | PREFIX_FASTWR);
CUR_CTRL |= PARPORT_CONTROL_STROBE;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
PARPORT_CONTROL_STROBE, PARPORT_CONTROL_STROBE);
last = *data;
@ -497,9 +452,8 @@ static void ppc6_wr_data_blk(struct pi_adapter *pi, u8 *data, long count)
if (this == last)
{
CUR_CTRL ^= PARPORT_CONTROL_INIT;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port,
0, PARPORT_CONTROL_INIT);
}
else
{
@ -509,9 +463,7 @@ static void ppc6_wr_data_blk(struct pi_adapter *pi, u8 *data, long count)
}
}
CUR_CTRL &= ~PARPORT_CONTROL_STROBE;
parport_write_control(pi->pardev->port, CUR_CTRL);
parport_frob_control(pi->pardev->port, PARPORT_CONTROL_STROBE, 0);
ppc6_send_cmd(pi, CMD_PREFIX_RESET | PREFIX_FASTWR);