ATA: sata_mv: Add device tree support
Add support for instantiating this driver from device tree, and add
the necassary DT information to the kirkwood.dtsi file.
This is based on previous work by Michael Walle and Jason Cooper.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Josh Coombs <josh.coombs@gmail.com>
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 24712ad..311be18 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -65,6 +65,8 @@
#include <linux/mbus.h>
#include <linux/bitops.h>
#include <linux/gfp.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
@@ -4026,7 +4028,7 @@
struct ata_host *host;
struct mv_host_priv *hpriv;
struct resource *res;
- int n_ports = 0;
+ int n_ports = 0, irq = 0;
int rc;
#if defined(CONFIG_HAVE_CLK)
int port;
@@ -4050,8 +4052,14 @@
return -EINVAL;
/* allocate host */
- mv_platform_data = pdev->dev.platform_data;
- n_ports = mv_platform_data->n_ports;
+ if (pdev->dev.of_node) {
+ of_property_read_u32(pdev->dev.of_node, "nr-ports", &n_ports);
+ irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
+ } else {
+ mv_platform_data = pdev->dev.platform_data;
+ n_ports = mv_platform_data->n_ports;
+ irq = platform_get_irq(pdev, 0);
+ }
host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
@@ -4109,8 +4117,7 @@
dev_info(&pdev->dev, "slots %u ports %d\n",
(unsigned)MV_MAX_Q_DEPTH, host->n_ports);
- rc = ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt,
- IRQF_SHARED, &mv6_sht);
+ rc = ata_host_activate(host, irq, mv_interrupt, IRQF_SHARED, &mv6_sht);
if (!rc)
return 0;
@@ -4205,15 +4212,24 @@
#define mv_platform_resume NULL
#endif
+#ifdef CONFIG_OF
+static struct of_device_id mv_sata_dt_ids[] __devinitdata = {
+ { .compatible = "marvell,orion-sata", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mv_sata_dt_ids);
+#endif
+
static struct platform_driver mv_platform_driver = {
- .probe = mv_platform_probe,
- .remove = __devexit_p(mv_platform_remove),
- .suspend = mv_platform_suspend,
- .resume = mv_platform_resume,
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
+ .probe = mv_platform_probe,
+ .remove = __devexit_p(mv_platform_remove),
+ .suspend = mv_platform_suspend,
+ .resume = mv_platform_resume,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(mv_sata_dt_ids),
+ },
};