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Message-Id: <20230307224627.28011-14-linux@zary.sk>
Date: Tue, 7 Mar 2023 23:46:08 +0100
From: Ondrej Zary <linux@...y.sk>
To: Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc: Christoph Hellwig <hch@....de>,
Sergey Shtylyov <s.shtylyov@....ru>,
Jens Axboe <axboe@...nel.dk>, Tim Waugh <tim@...erelk.net>,
linux-block@...r.kernel.org, linux-parport@...ts.infradead.org,
linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 13/32] pata_parport-bpck6: use parport_frob_control and remove CUR_CTRL
Use parport_frob_control instead of manually maintaining control
register state.
Signed-off-by: Ondrej Zary <linux@...y.sk>
---
drivers/ata/pata_parport/ppc6lnx.c | 120 +++++++++--------------------
1 file changed, 36 insertions(+), 84 deletions(-)
diff --git a/drivers/ata/pata_parport/ppc6lnx.c b/drivers/ata/pata_parport/ppc6lnx.c
index 89c40d6ab036..fdc11875bf1b 100644
--- a/drivers/ata/pata_parport/ppc6lnx.c
+++ b/drivers/ata/pata_parport/ppc6lnx.c
@@ -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_write_control(pi->pardev->port, CUR_CTRL);
+ parport_frob_control(pi->pardev->port, PARPORT_CONTROL_SELECT, 0);
- 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);
--
Ondrej Zary
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