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Message-Id: <1430359064-23454-7-git-send-email-f.fainelli@gmail.com>
Date: Wed, 29 Apr 2015 18:57:42 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: dave@...emloft.net, Florian Fainelli <f.fainelli@...il.com>,
vivien.didelot@...oirfairelinux.com,
jerome.oufella@...oirfairelinux.com, linux@...ck-us.net,
andrew@...n.ch, cphealy@...il.com, mathieu@...eaurora.org,
jonasj76@...il.com, andrey.volkov@...vision.fr,
Chris.Packham@...iedtelesis.co.nz
Subject: [RFC PATCH net-next 6/8] net: dsa: bcm_sf2: make it a real platform driver
The Broadcom Starfighter 2 switch driver should be a proper platform
driver, now that the DSA code has been updated to allow that, register a
switch device, feed it with the proper configuration data coming from
Device Tree and register our switch device.
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
drivers/net/dsa/bcm_sf2.c | 239 +++++++++++++++++++++++++---------------------
1 file changed, 128 insertions(+), 111 deletions(-)
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index cedb572bf25a..1e75f30eaf5c 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -131,11 +131,6 @@ static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds)
return BCM_SF2_STATS_SIZE;
}
-static char *bcm_sf2_sw_probe(struct device *host_dev, int sw_addr)
-{
- 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);
@@ -612,76 +607,8 @@ static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
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->pd->of_node->parent;
-
- 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;
- }
-
- /* 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_unmap;
- }
-
- 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++) {
@@ -699,31 +626,7 @@ static int bcm_sf2_sw_setup(struct dsa_switch *ds)
*/
ds->phys_mii_mask |= ((1 << 30) | (1 << 0));
- 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_unmap:
- base = &priv->core;
- for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
- if (*base)
- iounmap(*base);
- base++;
- }
- return ret;
}
static int bcm_sf2_sw_set_addr(struct dsa_switch *ds, u8 *addr)
@@ -947,8 +850,10 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
status->pause = 1;
}
-static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
+static int bcm_sf2_sw_suspend(struct device *d)
{
+ struct platform_device *pdev = to_platform_device(d);
+ struct dsa_switch *ds = platform_get_drvdata(pdev);
struct bcm_sf2_priv *priv = ds_to_priv(ds);
unsigned int port;
@@ -967,8 +872,10 @@ static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
return 0;
}
-static int bcm_sf2_sw_resume(struct dsa_switch *ds)
+static int bcm_sf2_sw_resume(struct device *d)
{
+ struct platform_device *pdev = to_platform_device(d);
+ struct dsa_switch *ds = platform_get_drvdata(pdev);
struct bcm_sf2_priv *priv = ds_to_priv(ds);
unsigned int port;
int ret;
@@ -1044,10 +951,8 @@ static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
return p->ethtool_ops->set_wol(p, wol);
}
-static struct dsa_switch_driver bcm_sf2_switch_driver = {
+static struct dsa_switch_driver bcm_sf2_switch_ops = {
.tag_protocol = DSA_TAG_PROTO_BRCM,
- .priv_size = sizeof(struct bcm_sf2_priv),
- .probe = bcm_sf2_sw_probe,
.setup = bcm_sf2_sw_setup,
.set_addr = bcm_sf2_sw_set_addr,
.get_phy_flags = bcm_sf2_sw_get_phy_flags,
@@ -1058,8 +963,6 @@ static struct dsa_switch_driver bcm_sf2_switch_driver = {
.get_sset_count = bcm_sf2_sw_get_sset_count,
.adjust_link = bcm_sf2_sw_adjust_link,
.fixed_link_update = bcm_sf2_sw_fixed_link_update,
- .suspend = bcm_sf2_sw_suspend,
- .resume = bcm_sf2_sw_resume,
.get_wol = bcm_sf2_sw_get_wol,
.set_wol = bcm_sf2_sw_set_wol,
.port_enable = bcm_sf2_port_setup,
@@ -1071,19 +974,133 @@ static struct dsa_switch_driver bcm_sf2_switch_driver = {
.port_stp_update = bcm_sf2_sw_br_set_stp_state,
};
-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 resource *res;
+ struct dsa_switch *ds;
+ struct bcm_sf2_priv *priv;
+ struct device_node *dn = pdev->dev.of_node;
+ void __iomem **base;
+ unsigned int i;
+ u32 reg, rev;
+ int ret;
- return 0;
+ ds = devm_kzalloc(&pdev->dev, sizeof(*ds) + sizeof(*priv), GFP_KERNEL);
+ if (!ds)
+ return -ENOMEM;
+
+ priv = ds_to_priv(ds);
+
+ ds->master_dev = &pdev->dev;
+ ds->tag_protocol = DSA_TAG_PROTO_BRCM;
+ ds->drv = &bcm_sf2_switch_ops;
+
+ spin_lock_init(&priv->indir_lock);
+ mutex_init(&priv->stats_mutex);
+
+ priv->irq0 = platform_get_irq(pdev, 0);
+ priv->irq1 = platform_get_irq(pdev, 1);
+
+ base = &priv->core;
+ for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, i);
+ *base = devm_ioremap_resource(&pdev->dev, res);
+ if (*base == NULL) {
+ dev_err(&pdev->dev,
+ "unable to find register: %s\n", reg_names[i]);
+ return -ENODEV;
+ }
+ base++;
+ }
+
+ ret = bcm_sf2_sw_rst(priv);
+ if (ret) {
+ pr_err("unable to software reset switch: %d\n", ret);
+ 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) {
+ dev_err(&pdev->dev, "failed to request switch_0 IRQ\n");
+ return ret;
+ }
+
+ ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
+ "switch_1", priv);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to request switch_1 IRQ\n");
+ return ret;
+ }
+
+ /* 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);
+
+ dev_info(&pdev->dev,
+ "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);
+
+ platform_set_drvdata(pdev, ds);
+
+ return dsa_switch_register(ds);
}
-module_init(bcm_sf2_init);
-static void __exit bcm_sf2_exit(void)
+static int bcm_sf2_sw_remove(struct platform_device *pdev)
{
- unregister_switch_driver(&bcm_sf2_switch_driver);
+ 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(&pdev->dev);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
}
-module_exit(bcm_sf2_exit);
+
+static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
+ bcm_sf2_sw_suspend, bcm_sf2_sw_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");
--
2.1.0
--
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