[SPARC64]: Convert parport to of_platform_driver.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 133 insertions, 100 deletions

diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h
index 23cc63f049a8..600afe5ae2e3 100644
--- a/include/asm-sparc64/parport.h
+++ b/include/asm-sparc64/parport.h
@@ -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
 
@@ -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)
@@ -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 */