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authorAndrew Lunn <andrew@lunn.ch>2012-06-10 16:45:37 +0200
committerAndrew Lunn <andrew@lunn.ch>2012-07-27 16:48:45 +0200
commit97b414e119ccc7216e29c3bd62fe1a1797f21404 (patch)
tree3e2104f4e1ce2b8ae7451084d8ca6e0c2c463e27
parent1e7bad0f5b91150fef78d732095ca84ca4a16585 (diff)
downloadop-kernel-dev-97b414e119ccc7216e29c3bd62fe1a1797f21404.zip
op-kernel-dev-97b414e119ccc7216e29c3bd62fe1a1797f21404.tar.gz
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>
-rw-r--r--Documentation/devicetree/bindings/ata/marvell.txt16
-rw-r--r--arch/arm/boot/dts/kirkwood.dtsi7
-rw-r--r--arch/arm/mach-kirkwood/board-dt.c1
-rw-r--r--drivers/ata/sata_mv.c42
4 files changed, 53 insertions, 13 deletions
diff --git a/Documentation/devicetree/bindings/ata/marvell.txt b/Documentation/devicetree/bindings/ata/marvell.txt
new file mode 100644
index 0000000..b5cdd20
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/marvell.txt
@@ -0,0 +1,16 @@
+* Marvell Orion SATA
+
+Required Properties:
+- compatibility : "marvell,orion-sata"
+- reg : Address range of controller
+- interrupts : Interrupt controller is using
+- nr-ports : Number of SATA ports in use.
+
+Example:
+
+ sata@80000 {
+ compatible = "marvell,orion-sata";
+ reg = <0x80000 0x5000>;
+ interrupts = <21>;
+ nr-ports = <2>;
+ }
diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi
index 458d137..cef9616 100644
--- a/arch/arm/boot/dts/kirkwood.dtsi
+++ b/arch/arm/boot/dts/kirkwood.dtsi
@@ -76,6 +76,13 @@
status = "okay";
};
+ sata@80000 {
+ compatible = "marvell,orion-sata";
+ reg = <0x80000 0x5000>;
+ interrupts = <21>;
+ status = "disabled";
+ };
+
nand@3000000 {
#address-cells = <1>;
#size-cells = <1>;
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c
index aa229fc..8c67c22 100644
--- a/arch/arm/mach-kirkwood/board-dt.c
+++ b/arch/arm/mach-kirkwood/board-dt.c
@@ -31,6 +31,7 @@ struct of_dev_auxdata kirkwood_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("marvell,mv64xxx-i2c", 0xf1011000, "mv64xxx_i2c.0",
NULL),
OF_DEV_AUXDATA("marvell,orion-wdt", 0xf1020300, "orion_wdt", NULL),
+ OF_DEV_AUXDATA("marvell,orion-sata", 0xf1080000, "sata_mv.0", NULL),
{},
};
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 @@ static int mv_platform_probe(struct platform_device *pdev)
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 @@ static int mv_platform_probe(struct platform_device *pdev)
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 @@ static int mv_platform_probe(struct platform_device *pdev)
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 @@ static int mv_platform_resume(struct platform_device *pdev)
#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),
+ },
};
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