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[SPARC64]: Convert parport to of_platform_driver.
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Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller committed Jul 21, 2007
1 parent 3adf55a commit 0fe85d5
Showing 1 changed file with 133 additions and 100 deletions.
233 changes: 133 additions & 100 deletions include/asm-sparc64/parport.h
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Original file line number Diff line number Diff line change
Expand Up @@ -8,8 +8,9 @@
#define _ASM_SPARC64_PARPORT_H 1

#include <asm/ebus.h>
#include <asm/isa.h>
#include <asm/ns87303.h>
#include <asm/of_device.h>
#include <asm/prom.h>

#define PARPORT_PC_MAX_PORTS PARPORT_MAX

Expand All @@ -35,8 +36,12 @@ static struct sparc_ebus_info {
unsigned int addr;
unsigned int count;
int lock;

struct parport *port;
} sparc_ebus_dmas[PARPORT_PC_MAX_PORTS];

static DECLARE_BITMAP(dma_slot_map, PARPORT_PC_MAX_PORTS);

static __inline__ int request_dma(unsigned int dmanr, const char *device_id)
{
if (dmanr >= PARPORT_PC_MAX_PORTS)
Expand Down Expand Up @@ -98,117 +103,145 @@ static __inline__ unsigned int get_dma_residue(unsigned int dmanr)
return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info);
}

static int ebus_ecpp_p(struct linux_ebus_device *edev)
static int __devinit ecpp_probe(struct of_device *op, const struct of_device_id *match)
{
if (!strcmp(edev->prom_node->name, "ecpp"))
return 1;
if (!strcmp(edev->prom_node->name, "parallel")) {
const char *compat;

compat = of_get_property(edev->prom_node,
"compatible", NULL);
if (compat &&
(!strcmp(compat, "ecpp") ||
!strcmp(compat, "ns87317-ecpp") ||
!strcmp(compat + 13, "ecpp")))
return 1;
unsigned long base = op->resource[0].start;
unsigned long config = op->resource[1].start;
unsigned long d_base = op->resource[2].start;
unsigned long d_len;
struct device_node *parent;
struct parport *p;
int slot, err;

parent = op->node->parent;
if (!strcmp(parent->name, "dma")) {
p = parport_pc_probe_port(base, base + 0x400,
op->irqs[0], PARPORT_DMA_NOFIFO,
op->dev.parent);
if (!p)
return -ENOMEM;
dev_set_drvdata(&op->dev, p);
return 0;
}

for (slot = 0; slot < PARPORT_PC_MAX_PORTS; slot++) {
if (!test_and_set_bit(slot, dma_slot_map))
break;
}
err = -ENODEV;
if (slot >= PARPORT_PC_MAX_PORTS)
goto out_err;

spin_lock_init(&sparc_ebus_dmas[slot].info.lock);

d_len = (op->resource[2].end - d_base) + 1UL;
sparc_ebus_dmas[slot].info.regs =
of_ioremap(&op->resource[2], 0, d_len, "ECPP DMA");

if (!sparc_ebus_dmas[slot].info.regs)
goto out_clear_map;

sparc_ebus_dmas[slot].info.flags = 0;
sparc_ebus_dmas[slot].info.callback = NULL;
sparc_ebus_dmas[slot].info.client_cookie = NULL;
sparc_ebus_dmas[slot].info.irq = 0xdeadbeef;
strcpy(sparc_ebus_dmas[slot].info.name, "parport");
if (ebus_dma_register(&sparc_ebus_dmas[slot].info))
goto out_unmap_regs;

ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 1);

/* Configure IRQ to Push Pull, Level Low */
/* Enable ECP, set bit 2 of the CTR first */
outb(0x04, base + 0x02);
ns87303_modify(config, PCR,
PCR_EPP_ENABLE |
PCR_IRQ_ODRAIN,
PCR_ECP_ENABLE |
PCR_ECP_CLK_ENA |
PCR_IRQ_POLAR);

/* CTR bit 5 controls direction of port */
ns87303_modify(config, PTR,
0, PTR_LPT_REG_DIR);

p = parport_pc_probe_port(base, base + 0x400,
op->irqs[0],
slot,
op->dev.parent);
err = -ENOMEM;
if (!p)
goto out_disable_irq;

dev_set_drvdata(&op->dev, p);

return 0;

out_disable_irq:
ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);
ebus_dma_unregister(&sparc_ebus_dmas[slot].info);

out_unmap_regs:
of_iounmap(&op->resource[2], sparc_ebus_dmas[slot].info.regs, d_len);

out_clear_map:
clear_bit(slot, dma_slot_map);

out_err:
return err;
}

static int parport_isa_probe(int count)
static int __devexit ecpp_remove(struct of_device *op)
{
struct sparc_isa_bridge *isa_br;
struct sparc_isa_device *isa_dev;

for_each_isa(isa_br) {
for_each_isadev(isa_dev, isa_br) {
struct sparc_isa_device *child;
unsigned long base;

if (strcmp(isa_dev->prom_node->name, "dma"))
continue;

child = isa_dev->child;
while (child) {
if (!strcmp(child->prom_node->name, "parallel"))
break;
child = child->next;
}
if (!child)
continue;

base = child->resource.start;

/* No DMA, see commentary in
* asm-sparc64/floppy.h:isa_floppy_init()
*/
if (parport_pc_probe_port(base, base + 0x400,
child->irq, PARPORT_DMA_NOFIFO,
&child->bus->self->dev))
count++;
}
struct parport *p = dev_get_drvdata(&op->dev);
int slot = p->dma;

parport_pc_unregister_port(p);

if (slot != PARPORT_DMA_NOFIFO) {
unsigned long d_base = op->resource[2].start;
unsigned long d_len;

d_len = (op->resource[2].end - d_base) + 1UL;

ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);
ebus_dma_unregister(&sparc_ebus_dmas[slot].info);
of_iounmap(&op->resource[2],
sparc_ebus_dmas[slot].info.regs,
d_len);
clear_bit(slot, dma_slot_map);
}

return count;
return 0;
}

static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
static struct of_device_id ecpp_match[] = {
{
.name = "ecpp",
},
{
.name = "parallel",
.compatible = "ecpp",
},
{
.name = "parallel",
.compatible = "ns87317-ecpp",
},
{},
};

static struct of_platform_driver ecpp_driver = {
.name = "ecpp",
.match_table = ecpp_match,
.probe = ecpp_probe,
.remove = __devexit_p(ecpp_remove),
};

static int parport_pc_find_nonpci_ports(int autoirq, int autodma)
{
struct linux_ebus *ebus;
struct linux_ebus_device *edev;
int count = 0;

for_each_ebus(ebus) {
for_each_ebusdev(edev, ebus) {
if (ebus_ecpp_p(edev)) {
unsigned long base = edev->resource[0].start;
unsigned long config = edev->resource[1].start;
unsigned long d_base = edev->resource[2].start;
unsigned long d_len;

spin_lock_init(&sparc_ebus_dmas[count].info.lock);
d_len = (edev->resource[2].end -
d_base) + 1;
sparc_ebus_dmas[count].info.regs =
ioremap(d_base, d_len);
if (!sparc_ebus_dmas[count].info.regs)
continue;
sparc_ebus_dmas[count].info.flags = 0;
sparc_ebus_dmas[count].info.callback = NULL;
sparc_ebus_dmas[count].info.client_cookie = NULL;
sparc_ebus_dmas[count].info.irq = 0xdeadbeef;
strcpy(sparc_ebus_dmas[count].info.name, "parport");
if (ebus_dma_register(&sparc_ebus_dmas[count].info))
continue;
ebus_dma_irq_enable(&sparc_ebus_dmas[count].info, 1);

/* Configure IRQ to Push Pull, Level Low */
/* Enable ECP, set bit 2 of the CTR first */
outb(0x04, base + 0x02);
ns87303_modify(config, PCR,
PCR_EPP_ENABLE |
PCR_IRQ_ODRAIN,
PCR_ECP_ENABLE |
PCR_ECP_CLK_ENA |
PCR_IRQ_POLAR);

/* CTR bit 5 controls direction of port */
ns87303_modify(config, PTR,
0, PTR_LPT_REG_DIR);

if (parport_pc_probe_port(base, base + 0x400,
edev->irqs[0],
count,
&ebus->self->dev))
count++;
}
}
}
of_register_driver(&ecpp_driver, &of_bus_type);

count = parport_isa_probe(count);

return count;
return 0;
}

#endif /* !(_ASM_SPARC64_PARPORT_H */

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