Merge branch 'bcm_sf2-platform-dev'
Florian Fainelli says:
====================
net: dsa: bcm_sf2: Platform conversion
This patch series converts the bcm_sf2 driver from a traditional DSA driver
into a platform_device driver and makes it use the new DSA binding that Andrew
introduced in the latest merge window.
Prior attempts used to coerce the code in net/dsa/dsa2.c to accept the old
binding, while really there is only one broken single user out there: bcm_sf2,
so instead, just assume the new DT binding is deployed and use it accordingly.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/devicetree/bindings/net/brcm,bcm7445-switch-v4.0.txt b/Documentation/devicetree/bindings/net/brcm,bcm7445-switch-v4.0.txt
index 30d4875..fb40891 100644
--- a/Documentation/devicetree/bindings/net/brcm,bcm7445-switch-v4.0.txt
+++ b/Documentation/devicetree/bindings/net/brcm,bcm7445-switch-v4.0.txt
@@ -6,9 +6,13 @@
- reg: addresses and length of the register sets for the device, must be 6
pairs of register addresses and lengths
- interrupts: interrupts for the devices, must be two interrupts
+- #address-cells: must be 1, see dsa/dsa.txt
+- #size-cells: must be 0, see dsa/dsa.txt
+
+Deprecated binding required properties:
+
- dsa,mii-bus: phandle to the MDIO bus controller, see dsa/dsa.txt
- dsa,ethernet: phandle to the CPU network interface controller, see dsa/dsa.txt
-- #size-cells: must be 0
- #address-cells: must be 2, see dsa/dsa.txt
Subnodes:
@@ -48,6 +52,45 @@
ethernet_switch@0 {
compatible = "brcm,bcm7445-switch-v4.0";
#size-cells = <0>;
+ #address-cells = <1>;
+ reg = <0x0 0x40000
+ 0x40000 0x110
+ 0x40340 0x30
+ 0x40380 0x30
+ 0x40400 0x34
+ 0x40600 0x208>;
+ reg-names = "core", "reg", intrl2_0", "intrl2_1",
+ "fcb, "acb";
+ interrupts = <0 0x18 0
+ 0 0x19 0>;
+ brcm,num-gphy = <1>;
+ brcm,num-rgmii-ports = <2>;
+ brcm,fcb-pause-override;
+ brcm,acb-packets-inflight;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ label = "gphy";
+ reg = <0>;
+ };
+ };
+ };
+};
+
+Example using the old DSA DeviceTree binding:
+
+switch_top@f0b00000 {
+ compatible = "simple-bus";
+ #size-cells = <1>;
+ #address-cells = <1>;
+ ranges = <0 0xf0b00000 0x40804>;
+
+ ethernet_switch@0 {
+ compatible = "brcm,bcm7445-switch-v4.0";
+ #size-cells = <0>;
#address-cells = <2>;
reg = <0x0 0x40000
0x40000 0x110
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index b2b8387..8e6fe13 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -136,20 +136,6 @@
return BCM_SF2_STATS_SIZE;
}
-static const char *bcm_sf2_sw_drv_probe(struct device *dsa_dev,
- struct device *host_dev, int sw_addr,
- void **_priv)
-{
- struct bcm_sf2_priv *priv;
-
- priv = devm_kzalloc(dsa_dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return NULL;
- *_priv = priv;
-
- return "Broadcom Starfighter 2";
-}
-
static void bcm_sf2_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
{
struct bcm_sf2_priv *priv = ds_to_priv(ds);
@@ -1571,83 +1557,8 @@
static int bcm_sf2_sw_setup(struct dsa_switch *ds)
{
- const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
struct bcm_sf2_priv *priv = ds_to_priv(ds);
- struct device_node *dn;
- void __iomem **base;
unsigned int port;
- unsigned int i;
- u32 reg, rev;
- int ret;
-
- spin_lock_init(&priv->indir_lock);
- mutex_init(&priv->stats_mutex);
-
- /* All the interesting properties are at the parent device_node
- * level
- */
- dn = ds->cd->of_node->parent;
- bcm_sf2_identify_ports(priv, ds->cd->of_node);
-
- priv->irq0 = irq_of_parse_and_map(dn, 0);
- priv->irq1 = irq_of_parse_and_map(dn, 1);
-
- base = &priv->core;
- for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
- *base = of_iomap(dn, i);
- if (*base == NULL) {
- pr_err("unable to find register: %s\n", reg_names[i]);
- ret = -ENOMEM;
- goto out_unmap;
- }
- base++;
- }
-
- ret = bcm_sf2_sw_rst(priv);
- if (ret) {
- pr_err("unable to software reset switch: %d\n", ret);
- goto out_unmap;
- }
-
- ret = bcm_sf2_mdio_register(ds);
- if (ret) {
- pr_err("failed to register MDIO bus\n");
- goto out_unmap;
- }
-
- /* Disable all interrupts and request them */
- bcm_sf2_intr_disable(priv);
-
- ret = request_irq(priv->irq0, bcm_sf2_switch_0_isr, 0,
- "switch_0", priv);
- if (ret < 0) {
- pr_err("failed to request switch_0 IRQ\n");
- goto out_mdio;
- }
-
- ret = request_irq(priv->irq1, bcm_sf2_switch_1_isr, 0,
- "switch_1", priv);
- if (ret < 0) {
- pr_err("failed to request switch_1 IRQ\n");
- goto out_free_irq0;
- }
-
- /* Reset the MIB counters */
- reg = core_readl(priv, CORE_GMNCFGCFG);
- reg |= RST_MIB_CNT;
- core_writel(priv, reg, CORE_GMNCFGCFG);
- reg &= ~RST_MIB_CNT;
- core_writel(priv, reg, CORE_GMNCFGCFG);
-
- /* Get the maximum number of ports for this switch */
- priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
- if (priv->hw_params.num_ports > DSA_MAX_PORTS)
- priv->hw_params.num_ports = DSA_MAX_PORTS;
-
- /* Assume a single GPHY setup if we can't read that property */
- if (of_property_read_u32(dn, "brcm,num-gphy",
- &priv->hw_params.num_gphy))
- priv->hw_params.num_gphy = 1;
/* Enable all valid ports and disable those unused */
for (port = 0; port < priv->hw_params.num_ports; port++) {
@@ -1662,38 +1573,11 @@
bcm_sf2_sw_configure_vlan(ds);
- rev = reg_readl(priv, REG_SWITCH_REVISION);
- priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
- SWITCH_TOP_REV_MASK;
- priv->hw_params.core_rev = (rev & SF2_REV_MASK);
-
- rev = reg_readl(priv, REG_PHY_REVISION);
- priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
-
- pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n",
- priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
- priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
- priv->core, priv->irq0, priv->irq1);
-
return 0;
-
-out_free_irq0:
- free_irq(priv->irq0, priv);
-out_mdio:
- bcm_sf2_mdio_unregister(priv);
-out_unmap:
- base = &priv->core;
- for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
- if (*base)
- iounmap(*base);
- base++;
- }
- return ret;
}
static struct dsa_switch_driver bcm_sf2_switch_driver = {
.tag_protocol = DSA_TAG_PROTO_BRCM,
- .probe = bcm_sf2_sw_drv_probe,
.setup = bcm_sf2_sw_setup,
.set_addr = bcm_sf2_sw_set_addr,
.get_phy_flags = bcm_sf2_sw_get_phy_flags,
@@ -1724,19 +1608,168 @@
.port_vlan_dump = bcm_sf2_sw_vlan_dump,
};
-static int __init bcm_sf2_init(void)
+static int bcm_sf2_sw_probe(struct platform_device *pdev)
{
- register_switch_driver(&bcm_sf2_switch_driver);
+ const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
+ struct device_node *dn = pdev->dev.of_node;
+ struct bcm_sf2_priv *priv;
+ struct dsa_switch *ds;
+ void __iomem **base;
+ struct resource *r;
+ unsigned int i;
+ u32 reg, rev;
+ int ret;
+
+ ds = devm_kzalloc(&pdev->dev, sizeof(*ds) + sizeof(*priv), GFP_KERNEL);
+ if (!ds)
+ return -ENOMEM;
+
+ priv = (struct bcm_sf2_priv *)(ds + 1);
+ ds->priv = priv;
+ ds->dev = &pdev->dev;
+ ds->drv = &bcm_sf2_switch_driver;
+
+ dev_set_drvdata(&pdev->dev, ds);
+
+ spin_lock_init(&priv->indir_lock);
+ mutex_init(&priv->stats_mutex);
+
+ bcm_sf2_identify_ports(priv, dn->child);
+
+ priv->irq0 = irq_of_parse_and_map(dn, 0);
+ priv->irq1 = irq_of_parse_and_map(dn, 1);
+
+ base = &priv->core;
+ for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
+ r = platform_get_resource(pdev, IORESOURCE_MEM, i);
+ *base = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(*base)) {
+ pr_err("unable to find register: %s\n", reg_names[i]);
+ return PTR_ERR(*base);
+ }
+ base++;
+ }
+
+ ret = bcm_sf2_sw_rst(priv);
+ if (ret) {
+ pr_err("unable to software reset switch: %d\n", ret);
+ return ret;
+ }
+
+ ret = bcm_sf2_mdio_register(ds);
+ if (ret) {
+ pr_err("failed to register MDIO bus\n");
+ return ret;
+ }
+
+ /* Disable all interrupts and request them */
+ bcm_sf2_intr_disable(priv);
+
+ ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0,
+ "switch_0", priv);
+ if (ret < 0) {
+ pr_err("failed to request switch_0 IRQ\n");
+ goto out_mdio;
+ }
+
+ ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
+ "switch_1", priv);
+ if (ret < 0) {
+ pr_err("failed to request switch_1 IRQ\n");
+ goto out_mdio;
+ }
+
+ /* Reset the MIB counters */
+ reg = core_readl(priv, CORE_GMNCFGCFG);
+ reg |= RST_MIB_CNT;
+ core_writel(priv, reg, CORE_GMNCFGCFG);
+ reg &= ~RST_MIB_CNT;
+ core_writel(priv, reg, CORE_GMNCFGCFG);
+
+ /* Get the maximum number of ports for this switch */
+ priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
+ if (priv->hw_params.num_ports > DSA_MAX_PORTS)
+ priv->hw_params.num_ports = DSA_MAX_PORTS;
+
+ /* Assume a single GPHY setup if we can't read that property */
+ if (of_property_read_u32(dn, "brcm,num-gphy",
+ &priv->hw_params.num_gphy))
+ priv->hw_params.num_gphy = 1;
+
+ rev = reg_readl(priv, REG_SWITCH_REVISION);
+ priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
+ SWITCH_TOP_REV_MASK;
+ priv->hw_params.core_rev = (rev & SF2_REV_MASK);
+
+ rev = reg_readl(priv, REG_PHY_REVISION);
+ priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
+
+ ret = dsa_register_switch(ds, dn);
+ if (ret)
+ goto out_mdio;
+
+ pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n",
+ priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
+ priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
+ priv->core, priv->irq0, priv->irq1);
+
+ return 0;
+
+out_mdio:
+ bcm_sf2_mdio_unregister(priv);
+ return ret;
+}
+
+static int bcm_sf2_sw_remove(struct platform_device *pdev)
+{
+ struct dsa_switch *ds = platform_get_drvdata(pdev);
+ struct bcm_sf2_priv *priv = ds_to_priv(ds);
+
+ /* Disable all ports and interrupts */
+ priv->wol_ports_mask = 0;
+ bcm_sf2_sw_suspend(ds);
+ dsa_unregister_switch(ds);
+ bcm_sf2_mdio_unregister(priv);
return 0;
}
-module_init(bcm_sf2_init);
-static void __exit bcm_sf2_exit(void)
+#ifdef CONFIG_PM_SLEEP
+static int bcm_sf2_suspend(struct device *dev)
{
- unregister_switch_driver(&bcm_sf2_switch_driver);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dsa_switch *ds = platform_get_drvdata(pdev);
+
+ return dsa_switch_suspend(ds);
}
-module_exit(bcm_sf2_exit);
+
+static int bcm_sf2_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dsa_switch *ds = platform_get_drvdata(pdev);
+
+ return dsa_switch_resume(ds);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
+ bcm_sf2_suspend, bcm_sf2_resume);
+
+static const struct of_device_id bcm_sf2_of_match[] = {
+ { .compatible = "brcm,bcm7445-switch-v4.0" },
+ { /* sentinel */ },
+};
+
+static struct platform_driver bcm_sf2_driver = {
+ .probe = bcm_sf2_sw_probe,
+ .remove = bcm_sf2_sw_remove,
+ .driver = {
+ .name = "brcm-sf2",
+ .of_match_table = bcm_sf2_of_match,
+ .pm = &bcm_sf2_pm_ops,
+ },
+};
+module_platform_driver(bcm_sf2_driver);
MODULE_AUTHOR("Broadcom Corporation");
MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 2217a3f..d00c392 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -386,4 +386,18 @@
void dsa_unregister_switch(struct dsa_switch *ds);
int dsa_register_switch(struct dsa_switch *ds, struct device_node *np);
+#ifdef CONFIG_PM_SLEEP
+int dsa_switch_suspend(struct dsa_switch *ds);
+int dsa_switch_resume(struct dsa_switch *ds);
+#else
+static inline int dsa_switch_suspend(struct dsa_switch *ds)
+{
+ return 0;
+}
+static inline int dsa_switch_resume(struct dsa_switch *ds)
+{
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
#endif
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 7e68bc6..8bda74e 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -543,7 +543,7 @@
}
#ifdef CONFIG_PM_SLEEP
-static int dsa_switch_suspend(struct dsa_switch *ds)
+int dsa_switch_suspend(struct dsa_switch *ds)
{
int i, ret = 0;
@@ -562,8 +562,9 @@
return ret;
}
+EXPORT_SYMBOL_GPL(dsa_switch_suspend);
-static int dsa_switch_resume(struct dsa_switch *ds)
+int dsa_switch_resume(struct dsa_switch *ds)
{
int i, ret = 0;
@@ -585,6 +586,7 @@
return 0;
}
+EXPORT_SYMBOL_GPL(dsa_switch_resume);
#endif
/* platform driver init and cleanup *****************************************/
@@ -1086,7 +1088,6 @@
static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume);
static const struct of_device_id dsa_of_match_table[] = {
- { .compatible = "brcm,bcm7445-switch-v4.0" },
{ .compatible = "marvell,dsa", },
{}
};