diff mbox series

[4/6] net: bcmgenet: Initial bcmgenet ACPI support

Message ID 20200201074625.8698-5-jeremy.linton@arm.com
State Deferred
Delegated to: David Miller
Headers show
Series Add ACPI bindings to the genet | expand

Commit Message

Jeremy Linton Feb. 1, 2020, 7:46 a.m. UTC 
The rpi4 is capable of booting in ACPI mode with the latest
edk2-platform commits. As such it would be helpful if the genet
platform device were usable.

To achieve this we add a new MODULE_DEVICE_TABLE, and convert
a few dt specific methods to their generic device_ calls. Until
the next patch, ACPI based machines will fallback on random
mac addresses.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
---
 .../net/ethernet/broadcom/genet/bcmgenet.c    | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

Comments

Andrew Lunn Feb. 1, 2020, 3:33 p.m. UTC | #1 
> @@ -3595,7 +3597,7 @@ static int bcmgenet_probe(struct platform_device *pdev)
>  	/* If this is an internal GPHY, power it on now, before UniMAC is
>  	 * brought out of reset as absolutely no UniMAC activity is allowed
>  	 */
> -	if (dn && !of_property_read_string(dn, "phy-mode", &phy_mode_str) &&
> +	if (!device_property_read_string(&pdev->dev, "phy-mode", &phy_mode_str) &&
>  	    !strcasecmp(phy_mode_str, "internal"))
>  		bcmgenet_power_up(priv, GENET_POWER_PASSIVE);

The code you are modifying appears to be old and out of date. For a
long time there has been a helper, of_get_phy_mode(). You should look
at fwnode_get_phy_mode().

   Andrew
Jeremy Linton Feb. 1, 2020, 7:09 p.m. UTC | #2 
Hi,

On 2/1/20 9:33 AM, Andrew Lunn wrote:
>> @@ -3595,7 +3597,7 @@ static int bcmgenet_probe(struct platform_device *pdev)
>>   	/* If this is an internal GPHY, power it on now, before UniMAC is
>>   	 * brought out of reset as absolutely no UniMAC activity is allowed
>>   	 */
>> -	if (dn && !of_property_read_string(dn, "phy-mode", &phy_mode_str) &&
>> +	if (!device_property_read_string(&pdev->dev, "phy-mode", &phy_mode_str) &&
>>   	    !strcasecmp(phy_mode_str, "internal"))
>>   		bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
> 
> The code you are modifying appears to be old and out of date. For a
> long time there has been a helper, of_get_phy_mode(). You should look
> at fwnode_get_phy_mode().

Yes, thanks, I did that in the other phy path but not here.
diff mbox series

Patch

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 120fa05a39ff..c736700f829e 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -7,6 +7,7 @@ 
 
 #define pr_fmt(fmt)				"bcmgenet: " fmt
 
+#include <linux/acpi.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/sched.h>
@@ -3476,7 +3477,7 @@  static int bcmgenet_probe(struct platform_device *pdev)
 	const struct bcmgenet_plat_data *pdata;
 	struct bcmgenet_priv *priv;
 	struct net_device *dev;
-	const void *macaddr;
+	const void *macaddr = NULL;
 	unsigned int i;
 	int err = -EIO;
 	const char *phy_mode_str;
@@ -3510,7 +3511,7 @@  static int bcmgenet_probe(struct platform_device *pdev)
 
 	if (dn)
 		macaddr = of_get_mac_address(dn);
-	else
+	else if (pd)
 		macaddr = pd->mac_address;
 
 	priv->base = devm_platform_ioremap_resource(pdev, 0);
@@ -3555,8 +3556,9 @@  static int bcmgenet_probe(struct platform_device *pdev)
 
 	priv->dev = dev;
 	priv->pdev = pdev;
-	if (of_id) {
-		pdata = of_id->data;
+
+	pdata = device_get_match_data(&pdev->dev);
+	if (pdata) {
 		priv->version = pdata->version;
 		priv->dma_max_burst_length = pdata->dma_max_burst_length;
 	} else {
@@ -3595,7 +3597,7 @@  static int bcmgenet_probe(struct platform_device *pdev)
 	/* If this is an internal GPHY, power it on now, before UniMAC is
 	 * brought out of reset as absolutely no UniMAC activity is allowed
 	 */
-	if (dn && !of_property_read_string(dn, "phy-mode", &phy_mode_str) &&
+	if (!device_property_read_string(&pdev->dev, "phy-mode", &phy_mode_str) &&
 	    !strcasecmp(phy_mode_str, "internal"))
 		bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
 
@@ -3768,6 +3770,12 @@  static int bcmgenet_suspend(struct device *d)
 
 static SIMPLE_DEV_PM_OPS(bcmgenet_pm_ops, bcmgenet_suspend, bcmgenet_resume);
 
+static const struct acpi_device_id genet_acpi_match[] = {
+	{ "BCM6E4E", (kernel_ulong_t)&bcm2711_plat_data },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, genet_acpi_match);
+
 static struct platform_driver bcmgenet_driver = {
 	.probe	= bcmgenet_probe,
 	.remove	= bcmgenet_remove,
@@ -3776,6 +3784,7 @@  static struct platform_driver bcmgenet_driver = {
 		.name	= "bcmgenet",
 		.of_match_table = bcmgenet_match,
 		.pm	= &bcmgenet_pm_ops,
+		.acpi_match_table = ACPI_PTR(genet_acpi_match),
 	},
 };
 module_platform_driver(bcmgenet_driver);