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path: root/drivers/parport/parport_sunbpp.c
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Diffstat (limited to 'drivers/parport/parport_sunbpp.c')
-rw-r--r--drivers/parport/parport_sunbpp.c198
1 files changed, 82 insertions, 116 deletions
diff --git a/drivers/parport/parport_sunbpp.c b/drivers/parport/parport_sunbpp.c
index 36a1556e64c..dffd6d0bd15 100644
--- a/drivers/parport/parport_sunbpp.c
+++ b/drivers/parport/parport_sunbpp.c
@@ -1,5 +1,4 @@
-/* $Id: parport_sunbpp.c,v 1.12 2001/05/26 03:01:42 davem Exp $
- * Parallel-port routines for Sun architecture
+/* parport_sunbpp.c: Parallel-port routines for SBUS
*
* Author: Derrick J. Brashear <shadow@dementia.org>
*
@@ -14,6 +13,9 @@
* Gus Baldauf (gbaldauf@ix.netcom.com)
* Peter Zaitcev
* Tom Dyas
+ *
+ * Updated to new SBUS device framework: David S. Miller <davem@davemloft.net>
+ *
*/
#include <linux/string.h>
@@ -24,6 +26,8 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/parport.h>
@@ -32,7 +36,6 @@
#include <asm/io.h>
#include <asm/oplib.h> /* OpenProm Library */
-#include <asm/sbus.h>
#include <asm/dma.h> /* BPP uses LSI 64854 for DMA */
#include <asm/irq.h>
#include <asm/sunbpp.h>
@@ -44,12 +47,6 @@
#define dprintk(x)
#endif
-static irqreturn_t parport_sunbpp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- parport_generic_irq(irq, (struct parport *) dev_id, regs);
- return IRQ_HANDLED;
-}
-
static void parport_sunbpp_disable_irq(struct parport *p)
{
struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
@@ -85,27 +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;
@@ -124,7 +100,7 @@ static unsigned char status_sunbpp_to_pc(struct parport *p)
if (!(value_tcr & P_TCR_BUSY))
bits |= PARPORT_STATUS_BUSY;
- dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", regs->p_tcr, regs->p_ir));
+ dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", value_tcr, value_ir));
dprintk((KERN_DEBUG "read status 0x%x\n", bits));
return bits;
}
@@ -145,7 +121,7 @@ static unsigned char control_sunbpp_to_pc(struct parport *p)
if (value_or & P_OR_SLCT_IN)
bits |= PARPORT_CONTROL_SELECT;
- dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+ dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", value_tcr, value_or));
dprintk((KERN_DEBUG "read control 0x%x\n", bits));
return bits;
}
@@ -163,7 +139,8 @@ static unsigned char parport_sunbpp_frob_control(struct parport *p,
unsigned char value_tcr = sbus_readb(&regs->p_tcr);
unsigned char value_or = sbus_readb(&regs->p_or);
- dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+ dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n",
+ value_tcr, value_or));
if (mask & PARPORT_CONTROL_STROBE) {
if (val & PARPORT_CONTROL_STROBE) {
value_tcr &= ~P_TCR_DS;
@@ -195,7 +172,8 @@ static unsigned char parport_sunbpp_frob_control(struct parport *p,
sbus_writeb(value_or, &regs->p_or);
sbus_writeb(value_tcr, &regs->p_tcr);
- dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+ dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n",
+ value_tcr, value_or));
return parport_sunbpp_read_control(p);
}
@@ -287,126 +265,114 @@ static struct parport_operations parport_sunbpp_ops =
.owner = THIS_MODULE,
};
-typedef struct {
- struct list_head list;
- struct parport *port;
-} Node;
-/* no locks, everything's serialized */
-static LIST_HEAD(port_list);
-
-static int __init init_one_port(struct sbus_dev *sdev)
+static int bpp_probe(struct platform_device *op)
{
- struct parport *p;
- /* at least in theory there may be a "we don't dma" case */
struct parport_operations *ops;
- void __iomem *base;
- int irq, dma, err = 0, size;
struct bpp_regs __iomem *regs;
+ int irq, dma, err = 0, size;
unsigned char value_tcr;
- Node *node;
-
- dprintk((KERN_DEBUG "init_one_port(%p): ranges, alloc_io, ", sdev));
- node = kmalloc(sizeof(Node), GFP_KERNEL);
- if (!node)
- goto out0;
+ void __iomem *base;
+ struct parport *p;
- irq = sdev->irqs[0];
- base = sbus_ioremap(&sdev->resource[0], 0,
- sdev->reg_addrs[0].reg_size,
- "sunbpp");
+ irq = op->archdata.irqs[0];
+ base = of_ioremap(&op->resource[0], 0,
+ resource_size(&op->resource[0]),
+ "sunbpp");
if (!base)
- goto out1;
+ return -ENODEV;
- size = sdev->reg_addrs[0].reg_size;
+ size = resource_size(&op->resource[0]);
dma = PARPORT_DMA_NONE;
- dprintk(("alloc(ppops), "));
- ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL);
+ ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations),
+ GFP_KERNEL);
if (!ops)
- goto out2;
-
- memcpy (ops, &parport_sunbpp_ops, sizeof (struct parport_operations));
+ goto out_unmap;
dprintk(("register_port\n"));
if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
- goto out3;
+ goto out_free_ops;
p->size = size;
+ p->dev = &op->dev;
- dprintk((KERN_DEBUG "init_one_port: request_irq(%08x:%p:%x:%s:%p) ",
- p->irq, parport_sunbpp_interrupt, SA_SHIRQ, p->name, p));
- if ((err = request_irq(p->irq, parport_sunbpp_interrupt,
- SA_SHIRQ, p->name, p)) != 0) {
- dprintk(("ERROR %d\n", err));
- goto out4;
+ if ((err = request_irq(p->irq, parport_irq_handler,
+ IRQF_SHARED, p->name, p)) != 0) {
+ goto out_put_port;
}
- dprintk(("OK\n"));
+
parport_sunbpp_enable_irq(p);
regs = (struct bpp_regs __iomem *)p->base;
- dprintk((KERN_DEBUG "forward\n"));
+
value_tcr = sbus_readb(&regs->p_tcr);
value_tcr &= ~P_TCR_DIR;
sbus_writeb(value_tcr, &regs->p_tcr);
printk(KERN_INFO "%s: sunbpp at 0x%lx\n", p->name, p->base);
- node->port = p;
- list_add(&node->list, &port_list);
- parport_announce_port (p);
- return 1;
+ dev_set_drvdata(&op->dev, p);
+
+ parport_announce_port(p);
+
+ return 0;
-out4:
+out_put_port:
parport_put_port(p);
-out3:
+
+out_free_ops:
kfree(ops);
-out2:
- sbus_iounmap(base, size);
-out1:
- kfree(node);
-out0:
+
+out_unmap:
+ of_iounmap(&op->resource[0], base, size);
+
return err;
}
-static int __init parport_sunbpp_init(void)
+static int bpp_remove(struct platform_device *op)
{
- struct sbus_bus *sbus;
- struct sbus_dev *sdev;
- int count = 0;
-
- for_each_sbus(sbus) {
- for_each_sbusdev(sdev, sbus) {
- if (!strcmp(sdev->prom_name, "SUNW,bpp"))
- count += init_one_port(sdev);
- }
- }
- return count ? 0 : -ENODEV;
-}
+ struct parport *p = dev_get_drvdata(&op->dev);
+ struct parport_operations *ops = p->ops;
-static void __exit parport_sunbpp_exit(void)
-{
- while (!list_empty(&port_list)) {
- Node *node = list_entry(port_list.next, Node, list);
- struct parport *p = node->port;
- struct parport_operations *ops = p->ops;
- parport_remove_port(p);
-
- if (p->irq != PARPORT_IRQ_NONE) {
- parport_sunbpp_disable_irq(p);
- free_irq(p->irq, p);
- }
- sbus_iounmap((void __iomem *)p->base, p->size);
- parport_put_port(p);
- kfree (ops);
- list_del(&node->list);
- kfree (node);
+ parport_remove_port(p);
+
+ if (p->irq != PARPORT_IRQ_NONE) {
+ parport_sunbpp_disable_irq(p);
+ free_irq(p->irq, p);
}
+
+ of_iounmap(&op->resource[0], (void __iomem *) p->base, p->size);
+ parport_put_port(p);
+ kfree(ops);
+
+ dev_set_drvdata(&op->dev, NULL);
+
+ return 0;
}
+static const struct of_device_id bpp_match[] = {
+ {
+ .name = "SUNW,bpp",
+ },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, bpp_match);
+
+static struct platform_driver bpp_sbus_driver = {
+ .driver = {
+ .name = "bpp",
+ .owner = THIS_MODULE,
+ .of_match_table = bpp_match,
+ },
+ .probe = bpp_probe,
+ .remove = bpp_remove,
+};
+
+module_platform_driver(bpp_sbus_driver);
+
MODULE_AUTHOR("Derrick J Brashear");
MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
+MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
-
-module_init(parport_sunbpp_init)
-module_exit(parport_sunbpp_exit)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 22:39:52 +0000