#include <linux/of_platform.h>
#include <linux/of_gpio.h>
#include <linux/rtl8366.h>
+#include <linux/version.h>
+#include <linux/of_mdio.h>
#ifdef CONFIG_RTL8366_SMI_DEBUG_FS
#include <linux/debugfs.h>
return 0;
}
-int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
+static int __rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
{
unsigned long flags;
u8 lo = 0;
return ret;
}
+/* Read/write via mdiobus */
+#define MDC_MDIO_CTRL0_REG 31
+#define MDC_MDIO_START_REG 29
+#define MDC_MDIO_CTRL1_REG 21
+#define MDC_MDIO_ADDRESS_REG 23
+#define MDC_MDIO_DATA_WRITE_REG 24
+#define MDC_MDIO_DATA_READ_REG 25
+
+#define MDC_MDIO_START_OP 0xFFFF
+#define MDC_MDIO_ADDR_OP 0x000E
+#define MDC_MDIO_READ_OP 0x0001
+#define MDC_MDIO_WRITE_OP 0x0003
+#define MDC_REALTEK_PHY_ADDR 0x0
+
+int __rtl8366_mdio_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
+{
+ u32 phy_id = MDC_REALTEK_PHY_ADDR;
+ struct mii_bus *mbus = smi->ext_mbus;
+
+ BUG_ON(in_interrupt());
+
+ mutex_lock(&mbus->mdio_lock);
+ /* Write Start command to register 29 */
+ mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Write address control code to register 31 */
+ mbus->write(mbus, phy_id, MDC_MDIO_CTRL0_REG, MDC_MDIO_ADDR_OP);
+
+ /* Write Start command to register 29 */
+ mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Write address to register 23 */
+ mbus->write(mbus, phy_id, MDC_MDIO_ADDRESS_REG, addr);
+
+ /* Write Start command to register 29 */
+ mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Write read control code to register 21 */
+ mbus->write(mbus, phy_id, MDC_MDIO_CTRL1_REG, MDC_MDIO_READ_OP);
+
+ /* Write Start command to register 29 */
+ mbus->write(smi->ext_mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Read data from register 25 */
+ *data = mbus->read(mbus, phy_id, MDC_MDIO_DATA_READ_REG);
+
+ mutex_unlock(&mbus->mdio_lock);
+
+ return 0;
+}
+
+static int __rtl8366_mdio_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
+{
+ u32 phy_id = MDC_REALTEK_PHY_ADDR;
+ struct mii_bus *mbus = smi->ext_mbus;
+
+ BUG_ON(in_interrupt());
+
+ mutex_lock(&mbus->mdio_lock);
+
+ /* Write Start command to register 29 */
+ mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Write address control code to register 31 */
+ mbus->write(mbus, phy_id, MDC_MDIO_CTRL0_REG, MDC_MDIO_ADDR_OP);
+
+ /* Write Start command to register 29 */
+ mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Write address to register 23 */
+ mbus->write(mbus, phy_id, MDC_MDIO_ADDRESS_REG, addr);
+
+ /* Write Start command to register 29 */
+ mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Write data to register 24 */
+ mbus->write(mbus, phy_id, MDC_MDIO_DATA_WRITE_REG, data);
+
+ /* Write Start command to register 29 */
+ mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
+
+ /* Write data control code to register 21 */
+ mbus->write(mbus, phy_id, MDC_MDIO_CTRL1_REG, MDC_MDIO_WRITE_OP);
+
+ mutex_unlock(&mbus->mdio_lock);
+ return 0;
+}
+
+int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
+{
+ if (smi->ext_mbus)
+ return __rtl8366_mdio_read_reg(smi, addr, data);
+ else
+ return __rtl8366_smi_read_reg(smi, addr, data);
+}
EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
{
- return __rtl8366_smi_write_reg(smi, addr, data, true);
+ if (smi->ext_mbus)
+ return __rtl8366_mdio_write_reg(smi, addr, data);
+ else
+ return __rtl8366_smi_write_reg(smi, addr, data, true);
}
EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
static int rtl8366_reset(struct rtl8366_smi *smi)
{
if (smi->hw_reset) {
- smi->hw_reset(true);
+ smi->hw_reset(smi, true);
msleep(RTL8366_SMI_HW_STOP_DELAY);
- smi->hw_reset(false);
+ smi->hw_reset(smi, false);
msleep(RTL8366_SMI_HW_START_DELAY);
return 0;
}
buf[len - 1] = '\0';
- if (strict_strtoul(buf, 16, &data)) {
+ if (kstrtoul(buf, 16, &data)) {
dev_err(smi->parent, "Invalid reg value %s\n", buf);
} else {
err = rtl8366_smi_write_reg(smi, reg, data);
static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
{
int ret;
- int i;
+
+#ifdef CONFIG_OF
+ struct device_node *np = NULL;
+
+ np = of_get_child_by_name(smi->parent->of_node, "mdio-bus");
+#endif
smi->mii_bus = mdiobus_alloc();
if (smi->mii_bus == NULL) {
dev_name(smi->parent));
smi->mii_bus->parent = smi->parent;
smi->mii_bus->phy_mask = ~(0x1f);
- smi->mii_bus->irq = smi->mii_irq;
- for (i = 0; i < PHY_MAX_ADDR; i++)
- smi->mii_irq[i] = PHY_POLL;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
+ {
+ int i;
+ smi->mii_bus->irq = smi->mii_irq;
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ smi->mii_irq[i] = PHY_POLL;
+ }
+#endif
+
+#ifdef CONFIG_OF
+ if (np)
+ ret = of_mdiobus_register(smi->mii_bus, np);
+ else
+#endif
+ ret = mdiobus_register(smi->mii_bus);
- ret = mdiobus_register(smi->mii_bus);
if (ret)
goto err_free;
}
EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
+int rtl8366_sw_get_port_stats(struct switch_dev *dev, int port,
+ struct switch_port_stats *stats,
+ int txb_id, int rxb_id)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ unsigned long long counter = 0;
+ int ret;
+
+ if (port >= smi->num_ports)
+ return -EINVAL;
+
+ ret = smi->ops->get_mib_counter(smi, txb_id, port, &counter);
+ if (ret)
+ return ret;
+
+ stats->tx_bytes = counter;
+
+ ret = smi->ops->get_mib_counter(smi, rxb_id, port, &counter);
+ if (ret)
+ return ret;
+
+ stats->rx_bytes = counter;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_stats);
+
int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
int err;
- err = gpio_request(smi->gpio_sda, name);
- if (err) {
- printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
- smi->gpio_sda, err);
- goto err_out;
- }
+ if (!smi->ext_mbus) {
+ err = gpio_request(smi->gpio_sda, name);
+ if (err) {
+ printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
+ smi->gpio_sda, err);
+ goto err_out;
+ }
- err = gpio_request(smi->gpio_sck, name);
- if (err) {
- printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
- smi->gpio_sck, err);
- goto err_free_sda;
+ err = gpio_request(smi->gpio_sck, name);
+ if (err) {
+ printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
+ smi->gpio_sck, err);
+ goto err_free_sda;
+ }
}
spin_lock_init(&smi->lock);
/* start the switch */
if (smi->hw_reset) {
- smi->hw_reset(false);
+ smi->hw_reset(smi, false);
msleep(RTL8366_SMI_HW_START_DELAY);
}
static void __rtl8366_smi_cleanup(struct rtl8366_smi *smi)
{
if (smi->hw_reset)
- smi->hw_reset(true);
+ smi->hw_reset(smi, true);
- gpio_free(smi->gpio_sck);
- gpio_free(smi->gpio_sda);
+ if (!smi->ext_mbus) {
+ gpio_free(smi->gpio_sck);
+ gpio_free(smi->gpio_sda);
+ }
}
enum rtl8366_type rtl8366_smi_detect(struct rtl8366_platform_data *pdata)
if (err)
goto err_out;
- dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
- smi->gpio_sda, smi->gpio_sck);
+ if (!smi->ext_mbus)
+ dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
+ smi->gpio_sda, smi->gpio_sck);
+ else
+ dev_info(smi->parent, "using MDIO bus '%s'\n", smi->ext_mbus->name);
err = smi->ops->detect(smi);
if (err) {
EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
#ifdef CONFIG_OF
+static void rtl8366_smi_reset(struct rtl8366_smi *smi, bool active)
+{
+ if (active)
+ reset_control_assert(smi->reset);
+ else
+ reset_control_deassert(smi->reset);
+}
+
int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
{
int sck = of_get_named_gpio(pdev->dev.of_node, "gpio-sck", 0);
int sda = of_get_named_gpio(pdev->dev.of_node, "gpio-sda", 0);
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *mdio_node;
+
+ mdio_node = of_parse_phandle(np, "mii-bus", 0);
+ if (!mdio_node) {
+ dev_err(&pdev->dev, "cannot find mdio node phandle");
+ goto try_gpio;
+ }
+
+ smi->ext_mbus = of_mdio_find_bus(mdio_node);
+ if (!smi->ext_mbus) {
+ dev_info(&pdev->dev,
+ "cannot find mdio bus from bus handle (yet)");
+ goto try_gpio;
+ }
+
+ return 0;
+try_gpio:
if (!gpio_is_valid(sck) || !gpio_is_valid(sda)) {
- dev_err(&pdev->dev, "gpios missing in devictree\n");
- return -EINVAL;
+ if (!mdio_node) {
+ dev_err(&pdev->dev, "gpios missing in devictree\n");
+ return -EINVAL;
+ } else {
+ return -EPROBE_DEFER;
+ }
}
smi->gpio_sda = sda;
smi->gpio_sck = sck;
+ smi->reset = devm_reset_control_get(&pdev->dev, "switch");
+ if (!IS_ERR(smi->reset))
+ smi->hw_reset = rtl8366_smi_reset;
return 0;
}
free_smi:
kfree(smi);
- return NULL;
+ return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(rtl8366_smi_probe);
projects / openwrt / openwrt.git / blobdiff