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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-09-22 12:24:38 +00:00
[SPARC64]: Convert parport to of_platform_driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
parent
3adf55ad5c
commit
0fe85d504b
1 changed files with 137 additions and 104 deletions
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@ -8,8 +8,9 @@
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#define _ASM_SPARC64_PARPORT_H 1
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#include <asm/ebus.h>
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#include <asm/isa.h>
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#include <asm/ns87303.h>
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#include <asm/of_device.h>
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#include <asm/prom.h>
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#define PARPORT_PC_MAX_PORTS PARPORT_MAX
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@ -35,8 +36,12 @@ static struct sparc_ebus_info {
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unsigned int addr;
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unsigned int count;
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int lock;
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struct parport *port;
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} sparc_ebus_dmas[PARPORT_PC_MAX_PORTS];
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static DECLARE_BITMAP(dma_slot_map, PARPORT_PC_MAX_PORTS);
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static __inline__ int request_dma(unsigned int dmanr, const char *device_id)
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{
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if (dmanr >= PARPORT_PC_MAX_PORTS)
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@ -98,117 +103,145 @@ static __inline__ unsigned int get_dma_residue(unsigned int dmanr)
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return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info);
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}
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static int ebus_ecpp_p(struct linux_ebus_device *edev)
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static int __devinit ecpp_probe(struct of_device *op, const struct of_device_id *match)
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{
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if (!strcmp(edev->prom_node->name, "ecpp"))
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return 1;
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if (!strcmp(edev->prom_node->name, "parallel")) {
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const char *compat;
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unsigned long base = op->resource[0].start;
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unsigned long config = op->resource[1].start;
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unsigned long d_base = op->resource[2].start;
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unsigned long d_len;
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struct device_node *parent;
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struct parport *p;
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int slot, err;
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compat = of_get_property(edev->prom_node,
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"compatible", NULL);
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if (compat &&
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(!strcmp(compat, "ecpp") ||
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!strcmp(compat, "ns87317-ecpp") ||
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!strcmp(compat + 13, "ecpp")))
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return 1;
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parent = op->node->parent;
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if (!strcmp(parent->name, "dma")) {
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p = parport_pc_probe_port(base, base + 0x400,
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op->irqs[0], PARPORT_DMA_NOFIFO,
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op->dev.parent);
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if (!p)
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return -ENOMEM;
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dev_set_drvdata(&op->dev, p);
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return 0;
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}
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for (slot = 0; slot < PARPORT_PC_MAX_PORTS; slot++) {
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if (!test_and_set_bit(slot, dma_slot_map))
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break;
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}
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err = -ENODEV;
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if (slot >= PARPORT_PC_MAX_PORTS)
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goto out_err;
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spin_lock_init(&sparc_ebus_dmas[slot].info.lock);
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d_len = (op->resource[2].end - d_base) + 1UL;
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sparc_ebus_dmas[slot].info.regs =
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of_ioremap(&op->resource[2], 0, d_len, "ECPP DMA");
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if (!sparc_ebus_dmas[slot].info.regs)
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goto out_clear_map;
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sparc_ebus_dmas[slot].info.flags = 0;
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sparc_ebus_dmas[slot].info.callback = NULL;
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sparc_ebus_dmas[slot].info.client_cookie = NULL;
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sparc_ebus_dmas[slot].info.irq = 0xdeadbeef;
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strcpy(sparc_ebus_dmas[slot].info.name, "parport");
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if (ebus_dma_register(&sparc_ebus_dmas[slot].info))
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goto out_unmap_regs;
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ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 1);
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/* Configure IRQ to Push Pull, Level Low */
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/* Enable ECP, set bit 2 of the CTR first */
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outb(0x04, base + 0x02);
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ns87303_modify(config, PCR,
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PCR_EPP_ENABLE |
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PCR_IRQ_ODRAIN,
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PCR_ECP_ENABLE |
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PCR_ECP_CLK_ENA |
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PCR_IRQ_POLAR);
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/* CTR bit 5 controls direction of port */
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ns87303_modify(config, PTR,
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0, PTR_LPT_REG_DIR);
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p = parport_pc_probe_port(base, base + 0x400,
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op->irqs[0],
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slot,
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op->dev.parent);
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err = -ENOMEM;
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if (!p)
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goto out_disable_irq;
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dev_set_drvdata(&op->dev, p);
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return 0;
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out_disable_irq:
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ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);
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ebus_dma_unregister(&sparc_ebus_dmas[slot].info);
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out_unmap_regs:
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of_iounmap(&op->resource[2], sparc_ebus_dmas[slot].info.regs, d_len);
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out_clear_map:
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clear_bit(slot, dma_slot_map);
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out_err:
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return err;
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}
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static int __devexit ecpp_remove(struct of_device *op)
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{
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struct parport *p = dev_get_drvdata(&op->dev);
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int slot = p->dma;
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parport_pc_unregister_port(p);
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if (slot != PARPORT_DMA_NOFIFO) {
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unsigned long d_base = op->resource[2].start;
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unsigned long d_len;
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d_len = (op->resource[2].end - d_base) + 1UL;
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ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);
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ebus_dma_unregister(&sparc_ebus_dmas[slot].info);
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of_iounmap(&op->resource[2],
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sparc_ebus_dmas[slot].info.regs,
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d_len);
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clear_bit(slot, dma_slot_map);
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}
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return 0;
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}
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static int parport_isa_probe(int count)
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static struct of_device_id ecpp_match[] = {
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{
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.name = "ecpp",
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},
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{
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.name = "parallel",
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.compatible = "ecpp",
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},
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{
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.name = "parallel",
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.compatible = "ns87317-ecpp",
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},
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{},
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};
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static struct of_platform_driver ecpp_driver = {
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.name = "ecpp",
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.match_table = ecpp_match,
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.probe = ecpp_probe,
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.remove = __devexit_p(ecpp_remove),
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};
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static int parport_pc_find_nonpci_ports(int autoirq, int autodma)
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{
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struct sparc_isa_bridge *isa_br;
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struct sparc_isa_device *isa_dev;
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of_register_driver(&ecpp_driver, &of_bus_type);
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for_each_isa(isa_br) {
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for_each_isadev(isa_dev, isa_br) {
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struct sparc_isa_device *child;
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unsigned long base;
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if (strcmp(isa_dev->prom_node->name, "dma"))
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continue;
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child = isa_dev->child;
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while (child) {
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if (!strcmp(child->prom_node->name, "parallel"))
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break;
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child = child->next;
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}
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if (!child)
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continue;
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base = child->resource.start;
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/* No DMA, see commentary in
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* asm-sparc64/floppy.h:isa_floppy_init()
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*/
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if (parport_pc_probe_port(base, base + 0x400,
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child->irq, PARPORT_DMA_NOFIFO,
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&child->bus->self->dev))
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count++;
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}
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}
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return count;
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}
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static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
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{
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struct linux_ebus *ebus;
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struct linux_ebus_device *edev;
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int count = 0;
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for_each_ebus(ebus) {
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for_each_ebusdev(edev, ebus) {
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if (ebus_ecpp_p(edev)) {
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unsigned long base = edev->resource[0].start;
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unsigned long config = edev->resource[1].start;
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unsigned long d_base = edev->resource[2].start;
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unsigned long d_len;
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spin_lock_init(&sparc_ebus_dmas[count].info.lock);
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d_len = (edev->resource[2].end -
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d_base) + 1;
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sparc_ebus_dmas[count].info.regs =
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ioremap(d_base, d_len);
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if (!sparc_ebus_dmas[count].info.regs)
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continue;
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sparc_ebus_dmas[count].info.flags = 0;
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sparc_ebus_dmas[count].info.callback = NULL;
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sparc_ebus_dmas[count].info.client_cookie = NULL;
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sparc_ebus_dmas[count].info.irq = 0xdeadbeef;
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strcpy(sparc_ebus_dmas[count].info.name, "parport");
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if (ebus_dma_register(&sparc_ebus_dmas[count].info))
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continue;
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ebus_dma_irq_enable(&sparc_ebus_dmas[count].info, 1);
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/* Configure IRQ to Push Pull, Level Low */
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/* Enable ECP, set bit 2 of the CTR first */
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outb(0x04, base + 0x02);
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ns87303_modify(config, PCR,
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PCR_EPP_ENABLE |
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PCR_IRQ_ODRAIN,
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PCR_ECP_ENABLE |
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PCR_ECP_CLK_ENA |
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PCR_IRQ_POLAR);
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/* CTR bit 5 controls direction of port */
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ns87303_modify(config, PTR,
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0, PTR_LPT_REG_DIR);
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if (parport_pc_probe_port(base, base + 0x400,
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edev->irqs[0],
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count,
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&ebus->self->dev))
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count++;
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}
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}
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}
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count = parport_isa_probe(count);
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return count;
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return 0;
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}
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#endif /* !(_ASM_SPARC64_PARPORT_H */
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