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-rw-r--r--drivers/ipack/carriers/tpci200.c3
-rw-r--r--drivers/ipack/devices/ipoctal.c69
-rw-r--r--drivers/ipack/devices/ipoctal.h2
-rw-r--r--drivers/ipack/ipack.c4
4 files changed, 50 insertions, 28 deletions
diff --git a/drivers/ipack/carriers/tpci200.c b/drivers/ipack/carriers/tpci200.c
index de5e32151a1e..9b23843dcad4 100644
--- a/drivers/ipack/carriers/tpci200.c
+++ b/drivers/ipack/carriers/tpci200.c
@@ -572,7 +572,8 @@ static int tpci200_pci_probe(struct pci_dev *pdev,
/* Register the carrier in the industry pack bus driver */
tpci200->info->ipack_bus = ipack_bus_register(&pdev->dev,
TPCI200_NB_SLOT,
- &tpci200_bus_ops);
+ &tpci200_bus_ops,
+ THIS_MODULE);
if (!tpci200->info->ipack_bus) {
dev_err(&pdev->dev,
"error registering the carrier on ipack driver\n");
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index e41bef048c23..035d5449227e 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -55,6 +55,22 @@ struct ipoctal {
u8 __iomem *int_space;
};
+static inline struct ipoctal *chan_to_ipoctal(struct ipoctal_channel *chan,
+ unsigned int index)
+{
+ return container_of(chan, struct ipoctal, channel[index]);
+}
+
+static void ipoctal_reset_channel(struct ipoctal_channel *channel)
+{
+ iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
+ channel->rx_enable = 0;
+ iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
+}
+
static int ipoctal_port_activate(struct tty_port *port, struct tty_struct *tty)
{
struct ipoctal_channel *channel;
@@ -72,12 +88,20 @@ static int ipoctal_port_activate(struct tty_port *port, struct tty_struct *tty)
static int ipoctal_open(struct tty_struct *tty, struct file *file)
{
- struct ipoctal_channel *channel;
+ struct ipoctal_channel *channel = dev_get_drvdata(tty->dev);
+ struct ipoctal *ipoctal = chan_to_ipoctal(channel, tty->index);
+ int err;
- channel = dev_get_drvdata(tty->dev);
tty->driver_data = channel;
- return tty_port_open(&channel->tty_port, tty, file);
+ if (!ipack_get_carrier(ipoctal->dev))
+ return -EBUSY;
+
+ err = tty_port_open(&channel->tty_port, tty, file);
+ if (err)
+ ipack_put_carrier(ipoctal->dev);
+
+ return err;
}
static void ipoctal_reset_stats(struct ipoctal_stats *stats)
@@ -151,7 +175,6 @@ static void ipoctal_irq_rx(struct ipoctal_channel *channel, u8 sr)
flag = TTY_FRAME;
}
if (sr & SR_RECEIVED_BREAK) {
- iowrite8(CR_CMD_RESET_BREAK_CHANGE, &channel->regs->w.cr);
channel->stats.rcv_break++;
flag = TTY_BREAK;
}
@@ -196,6 +219,9 @@ static void ipoctal_irq_channel(struct ipoctal_channel *channel)
isr = ioread8(&channel->block_regs->r.isr);
sr = ioread8(&channel->regs->r.sr);
+ if (isr & (IMR_DELTA_BREAK_A | IMR_DELTA_BREAK_B))
+ iowrite8(CR_CMD_RESET_BREAK_CHANGE, &channel->regs->w.cr);
+
if ((sr & SR_TX_EMPTY) && (channel->nb_bytes == 0)) {
iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);
/* In case of RS-485, change from TX to RX when finishing TX.
@@ -304,10 +330,7 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
channel->isr_rx_rdy_mask = ISR_RxRDY_FFULL_A;
}
- iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
- channel->rx_enable = 0;
- iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
+ ipoctal_reset_channel(channel);
iowrite8(MR1_CHRL_8_BITS | MR1_ERROR_CHAR | MR1_RxINT_RxRDY,
&channel->regs->w.mr); /* mr1 */
iowrite8(0, &channel->regs->w.mr); /* mr2 */
@@ -467,11 +490,7 @@ static void ipoctal_set_termios(struct tty_struct *tty,
cflag = tty->termios.c_cflag;
/* Disable and reset everything before change the setup */
- iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
+ ipoctal_reset_channel(channel);
/* Set Bits per chars */
switch (cflag & CSIZE) {
@@ -609,12 +628,7 @@ static void ipoctal_hangup(struct tty_struct *tty)
tty_port_hangup(&channel->tty_port);
- iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
- channel->rx_enable = 0;
- iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
+ ipoctal_reset_channel(channel);
clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags);
wake_up_interruptible(&channel->tty_port.open_wait);
@@ -627,15 +641,19 @@ static void ipoctal_shutdown(struct tty_struct *tty)
if (channel == NULL)
return;
- iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
- channel->rx_enable = 0;
- iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
- iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);
+ ipoctal_reset_channel(channel);
clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags);
}
+static void ipoctal_cleanup(struct tty_struct *tty)
+{
+ struct ipoctal_channel *channel = tty->driver_data;
+ struct ipoctal *ipoctal = chan_to_ipoctal(channel, tty->index);
+
+ /* release the carrier driver */
+ ipack_put_carrier(ipoctal->dev);
+}
+
static const struct tty_operations ipoctal_fops = {
.ioctl = NULL,
.open = ipoctal_open,
@@ -647,6 +665,7 @@ static const struct tty_operations ipoctal_fops = {
.get_icount = ipoctal_get_icount,
.hangup = ipoctal_hangup,
.shutdown = ipoctal_shutdown,
+ .cleanup = ipoctal_cleanup,
};
static int ipoctal_probe(struct ipack_device *dev)
diff --git a/drivers/ipack/devices/ipoctal.h b/drivers/ipack/devices/ipoctal.h
index 28f1c4233154..7fede0eb6a0c 100644
--- a/drivers/ipack/devices/ipoctal.h
+++ b/drivers/ipack/devices/ipoctal.h
@@ -12,7 +12,7 @@
* Software Foundation; version 2 of the License.
*/
-#ifndef _IPOCTAL_H
+#ifndef _IPOCTAL_H_
#define _IPOCTAL_H_
#define NR_CHANNELS 8
diff --git a/drivers/ipack/ipack.c b/drivers/ipack/ipack.c
index d0016ba469ed..c0e7b624ce54 100644
--- a/drivers/ipack/ipack.c
+++ b/drivers/ipack/ipack.c
@@ -206,7 +206,8 @@ static struct bus_type ipack_bus_type = {
};
struct ipack_bus_device *ipack_bus_register(struct device *parent, int slots,
- const struct ipack_bus_ops *ops)
+ const struct ipack_bus_ops *ops,
+ struct module *owner)
{
int bus_nr;
struct ipack_bus_device *bus;
@@ -225,6 +226,7 @@ struct ipack_bus_device *ipack_bus_register(struct device *parent, int slots,
bus->parent = parent;
bus->slots = slots;
bus->ops = ops;
+ bus->owner = owner;
return bus;
}
EXPORT_SYMBOL_GPL(ipack_bus_register);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.