#include <linux/gpio.h>
#include <linux/spinlock.h>
#include <linux/skbuff.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
#include <linux/rtl8366.h>
-#ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
+#ifdef CONFIG_RTL8366_SMI_DEBUG_FS
#include <linux/debugfs.h>
#endif
#define RTL8366_SMI_ACK_RETRY_COUNT 5
+#define RTL8366_SMI_HW_STOP_DELAY 25 /* msecs */
+#define RTL8366_SMI_HW_START_DELAY 100 /* msecs */
+
static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
{
ndelay(smi->clk_delay);
return rtl8366_smi_wait_for_ack(smi);
}
+static int rtl8366_smi_write_byte_noack(struct rtl8366_smi *smi, u8 data)
+{
+ rtl8366_smi_write_bits(smi, data, 8);
+ return 0;
+}
+
static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
{
u32 t;
}
EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
-int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
+static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
+ u32 addr, u32 data, bool ack)
{
unsigned long flags;
int ret;
goto out;
/* write DATA[15:8] */
- ret = rtl8366_smi_write_byte(smi, data >> 8);
+ if (ack)
+ ret = rtl8366_smi_write_byte(smi, data >> 8);
+ else
+ ret = rtl8366_smi_write_byte_noack(smi, data >> 8);
if (ret)
goto out;
return ret;
}
+
+int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
+{
+ return __rtl8366_smi_write_reg(smi, addr, data, true);
+}
EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
+int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data)
+{
+ return __rtl8366_smi_write_reg(smi, addr, data, false);
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack);
+
int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
{
u32 t;
}
EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
+static int rtl8366_reset(struct rtl8366_smi *smi)
+{
+ if (smi->hw_reset) {
+ smi->hw_reset(true);
+ msleep(RTL8366_SMI_HW_STOP_DELAY);
+ smi->hw_reset(false);
+ msleep(RTL8366_SMI_HW_START_DELAY);
+ return 0;
+ }
+
+ return smi->ops->reset_chip(smi);
+}
+
static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
{
int err;
return rtl8366_enable_vlan(smi, 1);
}
-#ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
+#ifdef CONFIG_RTL8366_SMI_DEBUG_FS
int rtl8366_debugfs_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
#else
static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
-#endif /* CONFIG_RTL8366S_PHY_DEBUG_FS */
+#endif /* CONFIG_RTL8366_SMI_DEBUG_FS */
static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
{
mdiobus_free(smi->mii_bus);
}
+int rtl8366_sw_reset_switch(struct switch_dev *dev)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ int err;
+
+ err = rtl8366_reset(smi);
+ if (err)
+ return err;
+
+ err = smi->ops->setup(smi);
+ if (err)
+ return err;
+
+ err = rtl8366_reset_vlan(smi);
+ if (err)
+ return err;
+
+ err = rtl8366_enable_vlan(smi, 1);
+ if (err)
+ return err;
+
+ return rtl8366_enable_all_ports(smi, 1);
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_reset_switch);
+
int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
}
spin_lock_init(&smi->lock);
+
+ /* start the switch */
+ if (smi->hw_reset) {
+ smi->hw_reset(false);
+ msleep(RTL8366_SMI_HW_START_DELAY);
+ }
+
return 0;
err_free_sda:
static void __rtl8366_smi_cleanup(struct rtl8366_smi *smi)
{
+ if (smi->hw_reset)
+ smi->hw_reset(true);
+
gpio_free(smi->gpio_sck);
gpio_free(smi->gpio_sda);
}
memset(&smi, 0, sizeof(smi));
smi.gpio_sda = pdata->gpio_sda;
smi.gpio_sck = pdata->gpio_sck;
+ smi.clk_delay = 10;
+ smi.cmd_read = 0xa9;
+ smi.cmd_write = 0xa8;
if (__rtl8366_smi_init(&smi, "rtl8366"))
goto out;
if (err)
goto err_out;
- spin_lock_init(&smi->lock);
-
dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
smi->gpio_sda, smi->gpio_sck);
goto err_free_sck;
}
+ err = rtl8366_reset(smi);
+ if (err)
+ goto err_free_sck;
+
err = smi->ops->setup(smi);
if (err) {
dev_err(smi->parent, "chip setup failed, err=%d\n", err);
{
rtl8366_debugfs_remove(smi);
rtl8366_smi_mii_cleanup(smi);
- gpio_free(smi->gpio_sck);
- gpio_free(smi->gpio_sda);
+ __rtl8366_smi_cleanup(smi);
}
EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
+#ifdef CONFIG_OF
+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);
+
+ if (!sck || !sda) {
+ dev_err(&pdev->dev, "gpios missing in devictree\n");
+ return -EINVAL;
+ }
+
+ smi->gpio_sda = sda;
+ smi->gpio_sck = sck;
+
+ return 0;
+}
+#else
+static inline int rtl8366_smi_probe_of(struct device_node *np, struct rtl8366_smi *smi)
+{
+ return -ENODEV;
+}
+#endif
+
+int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
+{
+ struct rtl8366_platform_data *pdata = pdev->dev.platform_data;
+
+ if (!pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "no platform data specified\n");
+ return -EINVAL;
+ }
+
+ smi->gpio_sda = pdata->gpio_sda;
+ smi->gpio_sck = pdata->gpio_sck;
+ smi->hw_reset = pdata->hw_reset;
+
+ return 0;
+}
+
+
+struct rtl8366_smi *rtl8366_smi_probe(struct platform_device *pdev)
+{
+ struct rtl8366_smi *smi;
+ int err;
+
+ smi = rtl8366_smi_alloc(&pdev->dev);
+ if (!smi)
+ return NULL;
+
+ if (pdev->dev.of_node)
+ err = rtl8366_smi_probe_of(pdev, smi);
+ else
+ err = rtl8366_smi_probe_plat(pdev, smi);
+
+ if (err)
+ goto free_smi;
+
+ return smi;
+
+free_smi:
+ kfree(smi);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_probe);
+
MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
MODULE_LICENSE("GPL v2");
projects / lede.git / blobdiff