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parport: remove unused dead code from lowlevel drivers

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This unused code has been untouched for over 7 years and must
go.

Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matt Porter 2012-04-20 11:28:25 -04:00 committed by Greg Kroah-Hartman
parent 1790625feb
commit 991214386d
5 changed files with 0 additions and 377 deletions
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36
drivers/parport/parport_amiga.c
View file

@ -48,23 +48,6 @@ static unsigned char amiga_read_data(struct parport *p)
return ciaa.prb;
}
#if 0
static unsigned char control_pc_to_amiga(unsigned char control)
{
unsigned char ret = 0;
if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */
;
if (control & PARPORT_CONTROL_INIT) /* INITP */
/* reset connected to cpu reset pin */;
if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */
/* Not connected */;
if (control & PARPORT_CONTROL_STROBE) /* Strobe */
/* Handled only directly by hardware */;
return ret;
}
#endif
static unsigned char control_amiga_to_pc(unsigned char control)
{
return PARPORT_CONTROL_SELECT |
@ -95,25 +78,6 @@ static unsigned char amiga_frob_control( struct parport *p, unsigned char mask,
return old;
}
#if 0 /* currently unused */
static unsigned char status_pc_to_amiga(unsigned char status)
{
unsigned char ret = 1;
if (status & PARPORT_STATUS_BUSY) /* Busy */
ret &= ~1;
if (status & PARPORT_STATUS_ACK) /* Ack */
/* handled in hardware */;
if (status & PARPORT_STATUS_PAPEROUT) /* PaperOut */
ret |= 2;
if (status & PARPORT_STATUS_SELECT) /* select */
ret |= 4;
if (status & PARPORT_STATUS_ERROR) /* error */
/* not connected */;
return ret;
}
#endif
static unsigned char status_amiga_to_pc(unsigned char status)
{
unsigned char ret = PARPORT_STATUS_BUSY | PARPORT_STATUS_ACK | PARPORT_STATUS_ERROR;

9
drivers/parport/parport_atari.c
View file

@ -130,15 +130,6 @@ parport_atari_data_forward(struct parport *p)
static void
parport_atari_data_reverse(struct parport *p)
{
#if 0 /* too dangerous, can kill sound chip */
unsigned long flags;
local_irq_save(flags);
/* Soundchip port B as input. */
sound_ym.rd_data_reg_sel = 7;
sound_ym.wd_data = sound_ym.rd_data_reg_sel & ~0x40;
local_irq_restore(flags);
#endif
}
static struct parport_operations parport_atari_ops = {

35
drivers/parport/parport_mfc3.c
View file

@ -147,25 +147,6 @@ DPRINTK(KERN_DEBUG "frob_control mask %02x, value %02x\n",mask,val);
return old;
}
#if 0 /* currently unused */
static unsigned char status_pc_to_mfc3(unsigned char status)
{
unsigned char ret = 1;
if (status & PARPORT_STATUS_BUSY) /* Busy */
ret &= ~1;
if (status & PARPORT_STATUS_ACK) /* Ack */
ret |= 8;
if (status & PARPORT_STATUS_PAPEROUT) /* PaperOut */
ret |= 2;
if (status & PARPORT_STATUS_SELECT) /* select */
ret |= 4;
if (status & PARPORT_STATUS_ERROR) /* error */
ret |= 16;
return ret;
}
#endif
static unsigned char status_mfc3_to_pc(unsigned char status)
{
unsigned char ret = PARPORT_STATUS_BUSY;
@ -184,14 +165,6 @@ static unsigned char status_mfc3_to_pc(unsigned char status)
return ret;
}
#if 0 /* currently unused */
static void mfc3_write_status( struct parport *p, unsigned char status)
{
DPRINTK(KERN_DEBUG "write_status %02x\n",status);
pia(p)->ppra = (pia(p)->ppra & 0xe0) | status_pc_to_mfc3(status);
}
#endif
static unsigned char mfc3_read_status(struct parport *p)
{
unsigned char status;
@ -201,14 +174,6 @@ DPRINTK(KERN_DEBUG "read_status %02x\n", status);
return status;
}
#if 0 /* currently unused */
static void mfc3_change_mode( struct parport *p, int m)
{
/* XXX: This port only has one mode, and I am
not sure about the corresponding PC-style mode*/
}
#endif
static int use_cnt = 0;
static irqreturn_t mfc3_interrupt(int irq, void *dev_id)

276
drivers/parport/parport_pc.c
View file

@ -197,54 +197,6 @@ static int change_mode(struct parport *p, int m)
ECR_WRITE(p, oecr);
return 0;
}
#ifdef CONFIG_PARPORT_1284
/* Find FIFO lossage; FIFO is reset */
#if 0
static int get_fifo_residue(struct parport *p)
{
int residue;
int cnfga;
const struct parport_pc_private *priv = p->physport->private_data;
/* Adjust for the contents of the FIFO. */
for (residue = priv->fifo_depth; ; residue--) {
if (inb(ECONTROL(p)) & 0x2)
/* Full up. */
break;
outb(0, FIFO(p));
}
printk(KERN_DEBUG "%s: %d PWords were left in FIFO\n", p->name,
residue);
/* Reset the FIFO. */
frob_set_mode(p, ECR_PS2);
/* Now change to config mode and clean up. FIXME */
frob_set_mode(p, ECR_CNF);
cnfga = inb(CONFIGA(p));
printk(KERN_DEBUG "%s: cnfgA contains 0x%02x\n", p->name, cnfga);
if (!(cnfga & (1<<2))) {
printk(KERN_DEBUG "%s: Accounting for extra byte\n", p->name);
residue++;
}
/* Don't care about partial PWords until support is added for
* PWord != 1 byte. */
/* Back to PS2 mode. */
frob_set_mode(p, ECR_PS2);
DPRINTK(KERN_DEBUG
"*** get_fifo_residue: done residue collecting (ecr = 0x%2.2x)\n",
inb(ECONTROL(p)));
return residue;
}
#endif /* 0 */
#endif /* IEEE 1284 support */
#endif /* FIFO support */
/*
@ -940,234 +892,6 @@ static size_t parport_pc_ecp_write_block_pio(struct parport *port,
return written;
}
#if 0
static size_t parport_pc_ecp_read_block_pio(struct parport *port,
void *buf, size_t length,
int flags)
{
size_t left = length;
size_t fifofull;
int r;
const int fifo = FIFO(port);
const struct parport_pc_private *priv = port->physport->private_data;
const int fifo_depth = priv->fifo_depth;
char *bufp = buf;
port = port->physport;
DPRINTK(KERN_DEBUG "parport_pc: parport_pc_ecp_read_block_pio\n");
dump_parport_state("enter fcn", port);
/* Special case: a timeout of zero means we cannot call schedule().
* Also if O_NONBLOCK is set then use the default implementation. */
if (port->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
return parport_ieee1284_ecp_read_data(port, buf,
length, flags);
if (port->ieee1284.mode == IEEE1284_MODE_ECPRLE) {
/* If the peripheral is allowed to send RLE compressed
* data, it is possible for a byte to expand to 128
* bytes in the FIFO. */
fifofull = 128;
} else {
fifofull = fifo_depth;
}
/* If the caller wants less than a full FIFO's worth of data,
* go through software emulation. Otherwise we may have to throw
* away data. */
if (length < fifofull)
return parport_ieee1284_ecp_read_data(port, buf,
length, flags);
if (port->ieee1284.phase != IEEE1284_PH_REV_IDLE) {
/* change to reverse-idle phase (must be in forward-idle) */
/* Event 38: Set nAutoFd low (also make sure nStrobe is high) */
parport_frob_control(port,
PARPORT_CONTROL_AUTOFD
| PARPORT_CONTROL_STROBE,
PARPORT_CONTROL_AUTOFD);
parport_pc_data_reverse(port); /* Must be in PS2 mode */
udelay(5);
/* Event 39: Set nInit low to initiate bus reversal */
parport_frob_control(port,
PARPORT_CONTROL_INIT,
0);
/* Event 40: Wait for nAckReverse (PError) to go low */
r = parport_wait_peripheral(port, PARPORT_STATUS_PAPEROUT, 0);
if (r) {
printk(KERN_DEBUG "%s: PE timeout Event 40 (%d) "
"in ecp_read_block_pio\n", port->name, r);
return 0;
}
}
/* Set up ECP FIFO mode.*/
/* parport_pc_frob_control(port,
PARPORT_CONTROL_STROBE |
PARPORT_CONTROL_AUTOFD,
PARPORT_CONTROL_AUTOFD); */
r = change_mode(port, ECR_ECP); /* ECP FIFO */
if (r)
printk(KERN_DEBUG "%s: Warning change_mode ECR_ECP failed\n",
port->name);
port->ieee1284.phase = IEEE1284_PH_REV_DATA;
/* the first byte must be collected manually */
dump_parport_state("pre 43", port);
/* Event 43: Wait for nAck to go low */
r = parport_wait_peripheral(port, PARPORT_STATUS_ACK, 0);
if (r) {
/* timed out while reading -- no data */
printk(KERN_DEBUG "PIO read timed out (initial byte)\n");
goto out_no_data;
}
/* read byte */
*bufp++ = inb(DATA(port));
left--;
dump_parport_state("43-44", port);
/* Event 44: nAutoFd (HostAck) goes high to acknowledge */
parport_pc_frob_control(port,
PARPORT_CONTROL_AUTOFD,
0);
dump_parport_state("pre 45", port);
/* Event 45: Wait for nAck to go high */
/* r = parport_wait_peripheral(port, PARPORT_STATUS_ACK,
PARPORT_STATUS_ACK); */
dump_parport_state("post 45", port);
r = 0;
if (r) {
/* timed out while waiting for peripheral to respond to ack */
printk(KERN_DEBUG "ECP PIO read timed out (waiting for nAck)\n");
/* keep hold of the byte we've got already */
goto out_no_data;
}
/* Event 46: nAutoFd (HostAck) goes low to accept more data */
parport_pc_frob_control(port,
PARPORT_CONTROL_AUTOFD,
PARPORT_CONTROL_AUTOFD);
dump_parport_state("rev idle", port);
/* Do the transfer. */
while (left > fifofull) {
int ret;
unsigned long expire = jiffies + port->cad->timeout;
unsigned char ecrval = inb(ECONTROL(port));
if (need_resched() && time_before(jiffies, expire))
/* Can't yield the port. */
schedule();
/* At this point, the FIFO may already be full. In
* that case ECP is already holding back the
* peripheral (assuming proper design) with a delayed
* handshake. Work fast to avoid a peripheral
* timeout. */
if (ecrval & 0x01) {
/* FIFO is empty. Wait for interrupt. */
dump_parport_state("FIFO empty", port);
/* Anyone else waiting for the port? */
if (port->waithead) {
printk(KERN_DEBUG "Somebody wants the port\n");
break;
}
/* Clear serviceIntr */
ECR_WRITE(port, ecrval & ~(1<<2));
false_alarm:
dump_parport_state("waiting", port);
ret = parport_wait_event(port, HZ);
DPRINTK(KERN_DEBUG "parport_wait_event returned %d\n",
ret);
if (ret < 0)
break;
ret = 0;
if (!time_before(jiffies, expire)) {
/* Timed out. */
dump_parport_state("timeout", port);
printk(KERN_DEBUG "PIO read timed out\n");
break;
}
ecrval = inb(ECONTROL(port));
if (!(ecrval & (1<<2))) {
if (need_resched() &&
time_before(jiffies, expire)) {
schedule();
}
goto false_alarm;
}
/* Depending on how the FIFO threshold was
* set, how long interrupt service took, and
* how fast the peripheral is, we might be
* lucky and have a just filled FIFO. */
continue;
}
if (ecrval & 0x02) {
/* FIFO is full. */
dump_parport_state("FIFO full", port);
insb(fifo, bufp, fifo_depth);
bufp += fifo_depth;
left -= fifo_depth;
continue;
}
DPRINTK(KERN_DEBUG
"*** ecp_read_block_pio: reading one byte from the FIFO\n");
/* FIFO not filled. We will cycle this loop for a while
* and either the peripheral will fill it faster,
* tripping a fast empty with insb, or we empty it. */
*bufp++ = inb(fifo);
left--;
}
/* scoop up anything left in the FIFO */
while (left && !(inb(ECONTROL(port) & 0x01))) {
*bufp++ = inb(fifo);
left--;
}
port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
dump_parport_state("rev idle2", port);
out_no_data:
/* Go to forward idle mode to shut the peripheral up (event 47). */
parport_frob_control(port, PARPORT_CONTROL_INIT, PARPORT_CONTROL_INIT);
/* event 49: PError goes high */
r = parport_wait_peripheral(port,
PARPORT_STATUS_PAPEROUT,
PARPORT_STATUS_PAPEROUT);
if (r) {
printk(KERN_DEBUG
"%s: PE timeout FWDIDLE (%d) in ecp_read_block_pio\n",
port->name, r);
}
port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
/* Finish up. */
{
int lost = get_fifo_residue(port);
if (lost)
/* Shouldn't happen with compliant peripherals. */
printk(KERN_DEBUG "%s: DATA LOSS (%d bytes)!\n",
port->name, lost);
}
dump_parport_state("fwd idle", port);
return length - left;
}
#endif /* 0 */
#endif /* IEEE 1284 support */
#endif /* Allowed to use FIFO/DMA */

21
drivers/parport/parport_sunbpp.c
View file

@ -82,27 +82,6 @@ static unsigned char parport_sunbpp_read_data(struct parport *p)
return sbus_readb(&regs->p_dr);
}
#if 0
static void control_pc_to_sunbpp(struct parport *p, unsigned char status)
{
struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
unsigned char value_tcr = sbus_readb(&regs->p_tcr);
unsigned char value_or = sbus_readb(&regs->p_or);
if (status & PARPORT_CONTROL_STROBE)
value_tcr |= P_TCR_DS;
if (status & PARPORT_CONTROL_AUTOFD)
value_or |= P_OR_AFXN;
if (status & PARPORT_CONTROL_INIT)
value_or |= P_OR_INIT;
if (status & PARPORT_CONTROL_SELECT)
value_or |= P_OR_SLCT_IN;
sbus_writeb(value_or, &regs->p_or);
sbus_writeb(value_tcr, &regs->p_tcr);
}
#endif
static unsigned char status_sunbpp_to_pc(struct parport *p)
{
struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;