#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/platform_data/atmel.h>
+#include <linux/io.h>
+#include <linux/sizes.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
#include <pcmcia/ss.h>
-#include <mach/hardware.h>
-#include <asm/io.h>
-#include <asm/sizes.h>
-
#include <mach/at91rm9200_mc.h>
#include <mach/at91_ramc.h>
/*--------------------------------------------------------------------------*/
-static const char driver_name[] = "at91_cf";
-
struct at91_cf_socket {
struct pcmcia_socket socket;
/* kick pccard as needed */
if (present != cf->present) {
cf->present = present;
- pr_debug("%s: card %s\n", driver_name,
+ dev_dbg(&cf->pdev->dev, "card %s\n",
present ? "present" : "gone");
pcmcia_parse_events(&cf->socket, SS_DETECT);
}
int vcc = gpio_is_valid(cf->board->vcc_pin);
*sp = SS_DETECT | SS_3VCARD;
- if (!rdy || gpio_get_value(rdy))
+ if (!rdy || gpio_get_value(cf->board->irq_pin))
*sp |= SS_READY;
- if (!vcc || gpio_get_value(vcc))
+ if (!vcc || gpio_get_value(cf->board->vcc_pin))
*sp |= SS_POWERON;
} else
*sp = 0;
/* switch Vcc if needed and possible */
if (gpio_is_valid(cf->board->vcc_pin)) {
switch (s->Vcc) {
- case 0:
- gpio_set_value(cf->board->vcc_pin, 0);
- break;
- case 33:
- gpio_set_value(cf->board->vcc_pin, 1);
- break;
- default:
- return -EINVAL;
+ case 0:
+ gpio_set_value(cf->board->vcc_pin, 0);
+ break;
+ case 33:
+ gpio_set_value(cf->board->vcc_pin, 1);
+ break;
+ default:
+ return -EINVAL;
}
}
/* toggle reset if needed */
gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET);
- pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n",
- driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask);
+ dev_dbg(&cf->pdev->dev, "Vcc %d, io_irq %d, flags %04x csc %04x\n",
+ s->Vcc, s->io_irq, s->flags, s->csc_mask);
return 0;
}
*/
if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) {
csr |= AT91_SMC_DBW_8;
- pr_debug("%s: 8bit i/o bus\n", driver_name);
+ dev_dbg(&cf->pdev->dev, "8bit i/o bus\n");
} else {
csr |= AT91_SMC_DBW_16;
- pr_debug("%s: 16bit i/o bus\n", driver_name);
+ dev_dbg(&cf->pdev->dev, "16bit i/o bus\n");
}
at91_ramc_write(0, AT91_SMC_CSR(cf->board->chipselect), csr);
/*--------------------------------------------------------------------------*/
+#if defined(CONFIG_OF)
+static const struct of_device_id at91_cf_dt_ids[] = {
+ { .compatible = "atmel,at91rm9200-cf" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, at91_cf_dt_ids);
+
+static int at91_cf_dt_init(struct platform_device *pdev)
+{
+ struct at91_cf_data *board;
+
+ board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
+ if (!board)
+ return -ENOMEM;
+
+ board->irq_pin = of_get_gpio(pdev->dev.of_node, 0);
+ board->det_pin = of_get_gpio(pdev->dev.of_node, 1);
+ board->vcc_pin = of_get_gpio(pdev->dev.of_node, 2);
+ board->rst_pin = of_get_gpio(pdev->dev.of_node, 3);
+
+ pdev->dev.platform_data = board;
+
+ return 0;
+}
+#else
+static int at91_cf_dt_init(struct platform_device *pdev)
+{
+ return -ENODEV;
+}
+#endif
+
static int __init at91_cf_probe(struct platform_device *pdev)
{
struct at91_cf_socket *cf;
struct resource *io;
int status;
- if (!board || !gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin))
+ if (!board) {
+ status = at91_cf_dt_init(pdev);
+ if (status)
+ return status;
+
+ board = pdev->dev.platform_data;
+ }
+
+ if (!gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin))
return -ENODEV;
io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!io)
return -ENODEV;
- cf = kzalloc(sizeof *cf, GFP_KERNEL);
+ cf = devm_kzalloc(&pdev->dev, sizeof(*cf), GFP_KERNEL);
if (!cf)
return -ENOMEM;
platform_set_drvdata(pdev, cf);
/* must be a GPIO; ergo must trigger on both edges */
- status = gpio_request(board->det_pin, "cf_det");
+ status = devm_gpio_request(&pdev->dev, board->det_pin, "cf_det");
if (status < 0)
- goto fail0;
- status = request_irq(gpio_to_irq(board->det_pin), at91_cf_irq, 0, driver_name, cf);
+ return status;
+
+ status = devm_request_irq(&pdev->dev, gpio_to_irq(board->det_pin),
+ at91_cf_irq, 0, "at91_cf detect", cf);
if (status < 0)
- goto fail00;
+ return status;
+
device_init_wakeup(&pdev->dev, 1);
- status = gpio_request(board->rst_pin, "cf_rst");
+ status = devm_gpio_request(&pdev->dev, board->rst_pin, "cf_rst");
if (status < 0)
goto fail0a;
if (gpio_is_valid(board->vcc_pin)) {
- status = gpio_request(board->vcc_pin, "cf_vcc");
+ status = devm_gpio_request(&pdev->dev, board->vcc_pin, "cf_vcc");
if (status < 0)
- goto fail0b;
+ goto fail0a;
}
/*
* (Note: DK board doesn't wire the IRQ pin...)
*/
if (gpio_is_valid(board->irq_pin)) {
- status = gpio_request(board->irq_pin, "cf_irq");
+ status = devm_gpio_request(&pdev->dev, board->irq_pin, "cf_irq");
if (status < 0)
- goto fail0c;
- status = request_irq(gpio_to_irq(board->irq_pin), at91_cf_irq,
- IRQF_SHARED, driver_name, cf);
+ goto fail0a;
+
+ status = devm_request_irq(&pdev->dev, gpio_to_irq(board->irq_pin),
+ at91_cf_irq, IRQF_SHARED, "at91_cf", cf);
if (status < 0)
- goto fail0d;
+ goto fail0a;
cf->socket.pci_irq = gpio_to_irq(board->irq_pin);
} else
cf->socket.pci_irq = nr_irqs + 1;
/* pcmcia layer only remaps "real" memory not iospace */
- cf->socket.io_offset = (unsigned long)
- ioremap(cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
+ cf->socket.io_offset = (unsigned long) devm_ioremap(&pdev->dev,
+ cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
if (!cf->socket.io_offset) {
status = -ENXIO;
- goto fail1;
+ goto fail0a;
}
/* reserve chip-select regions */
- if (!request_mem_region(io->start, resource_size(io), driver_name)) {
+ if (!devm_request_mem_region(&pdev->dev, io->start, resource_size(io), "at91_cf")) {
status = -ENXIO;
- goto fail1;
+ goto fail0a;
}
- pr_info("%s: irqs det #%d, io #%d\n", driver_name,
+ dev_info(&pdev->dev, "irqs det #%d, io #%d\n",
gpio_to_irq(board->det_pin), gpio_to_irq(board->irq_pin));
cf->socket.owner = THIS_MODULE;
status = pcmcia_register_socket(&cf->socket);
if (status < 0)
- goto fail2;
+ goto fail0a;
return 0;
-fail2:
- release_mem_region(io->start, resource_size(io));
-fail1:
- if (cf->socket.io_offset)
- iounmap((void __iomem *) cf->socket.io_offset);
- if (gpio_is_valid(board->irq_pin)) {
- free_irq(gpio_to_irq(board->irq_pin), cf);
-fail0d:
- gpio_free(board->irq_pin);
- }
-fail0c:
- if (gpio_is_valid(board->vcc_pin))
- gpio_free(board->vcc_pin);
-fail0b:
- gpio_free(board->rst_pin);
fail0a:
device_init_wakeup(&pdev->dev, 0);
- free_irq(gpio_to_irq(board->det_pin), cf);
-fail00:
- gpio_free(board->det_pin);
-fail0:
- kfree(cf);
return status;
}
static int __exit at91_cf_remove(struct platform_device *pdev)
{
struct at91_cf_socket *cf = platform_get_drvdata(pdev);
- struct at91_cf_data *board = cf->board;
- struct resource *io = cf->socket.io[0].res;
pcmcia_unregister_socket(&cf->socket);
- release_mem_region(io->start, resource_size(io));
- iounmap((void __iomem *) cf->socket.io_offset);
- if (gpio_is_valid(board->irq_pin)) {
- free_irq(gpio_to_irq(board->irq_pin), cf);
- gpio_free(board->irq_pin);
- }
- if (gpio_is_valid(board->vcc_pin))
- gpio_free(board->vcc_pin);
- gpio_free(board->rst_pin);
device_init_wakeup(&pdev->dev, 0);
- free_irq(gpio_to_irq(board->det_pin), cf);
- gpio_free(board->det_pin);
- kfree(cf);
+
return 0;
}
static struct platform_driver at91_cf_driver = {
.driver = {
- .name = (char *) driver_name,
+ .name = "at91_cf",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(at91_cf_dt_ids),
},
.remove = __exit_p(at91_cf_remove),
.suspend = at91_cf_suspend,
/*--------------------------------------------------------------------------*/
-static int __init at91_cf_init(void)
-{
- return platform_driver_probe(&at91_cf_driver, at91_cf_probe);
-}
-module_init(at91_cf_init);
-
-static void __exit at91_cf_exit(void)
-{
- platform_driver_unregister(&at91_cf_driver);
-}
-module_exit(at91_cf_exit);
+module_platform_driver_probe(at91_cf_driver, at91_cf_probe);
MODULE_DESCRIPTION("AT91 Compact Flash Driver");
MODULE_AUTHOR("David Brownell");
projects / firefly-linux-kernel-4.4.55.git / blobdiff