/*
- * Sunxi usb-controller code shared between the ehci and musb controllers
+ * Sunxi usb-phy code
*
- * Copyright (C) 2014 Roman Byshko
- *
- * Roman Byshko <rbyshko@gmail.com>
+ * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
+ * Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com>
*
* Based on code from
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
#define SUNXI_EHCI_AHB_INCRX_ALIGN_EN (1 << 8)
#define SUNXI_EHCI_ULPI_BYPASS_EN (1 << 0)
-static struct sunxi_usbc_hcd {
- struct usb_hcd *hcd;
+static struct sunxi_usb_phy {
int usb_rst_mask;
int gpio_vbus;
int gpio_vbus_det;
int id;
-} sunxi_usbc_hcd[] = {
+} sunxi_usb_phy[] = {
{
.usb_rst_mask = CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK,
.id = 0,
#endif
};
-static int enabled_hcd_count;
+static int sunxi_usb_phy_enabled_count;
static int get_vbus_gpio(int index)
{
return -EINVAL;
}
-static void usb_phy_write(struct sunxi_usbc_hcd *sunxi_usbc, int addr,
+static void usb_phy_write(struct sunxi_usb_phy *phy, int addr,
int data, int len)
{
int j = 0, usbc_bit = 0;
writel(0, dest);
#endif
- usbc_bit = 1 << (sunxi_usbc->id * 2);
+ usbc_bit = 1 << (phy->id * 2);
for (j = 0; j < len; j++) {
/* set the bit address to be written */
clrbits_le32(dest, 0xff << 8);
}
}
-static void sunxi_usb_phy_init(struct sunxi_usbc_hcd *sunxi_usbc)
+static void sunxi_usb_phy_config(struct sunxi_usb_phy *phy)
{
/* The following comments are machine
* translated from Chinese, you have been warned!
*/
/* Regulation 45 ohms */
- if (sunxi_usbc->id == 0)
- usb_phy_write(sunxi_usbc, 0x0c, 0x01, 1);
+ if (phy->id == 0)
+ usb_phy_write(phy, 0x0c, 0x01, 1);
/* adjust PHY's magnitude and rate */
- usb_phy_write(sunxi_usbc, 0x20, 0x14, 5);
+ usb_phy_write(phy, 0x20, 0x14, 5);
/* threshold adjustment disconnect */
#if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN6I
- usb_phy_write(sunxi_usbc, 0x2a, 3, 2);
+ usb_phy_write(phy, 0x2a, 3, 2);
#else
- usb_phy_write(sunxi_usbc, 0x2a, 2, 2);
+ usb_phy_write(phy, 0x2a, 2, 2);
#endif
return;
return;
}
-void sunxi_usbc_enable_squelch_detect(int index, int enable)
+void sunxi_usb_phy_enable_squelch_detect(int index, int enable)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
- usb_phy_write(sunxi_usbc, 0x3c, enable ? 0 : 2, 2);
+ usb_phy_write(phy, 0x3c, enable ? 0 : 2, 2);
}
-int sunxi_usbc_request_resources(int index)
+int sunxi_usb_phy_probe(int index)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
int ret = 0;
- sunxi_usbc->gpio_vbus = get_vbus_gpio(index);
- if (sunxi_usbc->gpio_vbus >= 0) {
- ret |= gpio_request(sunxi_usbc->gpio_vbus, "usbc_vbus");
- ret |= gpio_direction_output(sunxi_usbc->gpio_vbus, 0);
+ phy->gpio_vbus = get_vbus_gpio(index);
+ if (phy->gpio_vbus >= 0) {
+ ret |= gpio_request(phy->gpio_vbus, "usbc_vbus");
+ ret |= gpio_direction_output(phy->gpio_vbus, 0);
}
- sunxi_usbc->gpio_vbus_det = get_vbus_detect_gpio(index);
- if (sunxi_usbc->gpio_vbus_det >= 0) {
- ret |= gpio_request(sunxi_usbc->gpio_vbus_det, "usbc_vbus_det");
- ret |= gpio_direction_input(sunxi_usbc->gpio_vbus_det);
+ phy->gpio_vbus_det = get_vbus_detect_gpio(index);
+ if (phy->gpio_vbus_det >= 0) {
+ ret |= gpio_request(phy->gpio_vbus_det, "usbc_vbus_det");
+ ret |= gpio_direction_input(phy->gpio_vbus_det);
}
return ret;
}
-int sunxi_usbc_free_resources(int index)
+int sunxi_usb_phy_remove(int index)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
int ret = 0;
- if (sunxi_usbc->gpio_vbus >= 0)
- ret |= gpio_free(sunxi_usbc->gpio_vbus);
+ if (phy->gpio_vbus >= 0)
+ ret |= gpio_free(phy->gpio_vbus);
- if (sunxi_usbc->gpio_vbus_det >= 0)
- ret |= gpio_free(sunxi_usbc->gpio_vbus_det);
+ if (phy->gpio_vbus_det >= 0)
+ ret |= gpio_free(phy->gpio_vbus_det);
return ret;
}
-void sunxi_usbc_enable(int index)
+void sunxi_usb_phy_init(int index)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
/* enable common PHY only once */
- if (enabled_hcd_count == 0)
+ if (sunxi_usb_phy_enabled_count == 0)
setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
- setbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask);
+ setbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask);
- sunxi_usb_phy_init(sunxi_usbc);
+ sunxi_usb_phy_config(phy);
- if (sunxi_usbc->id != 0)
+ if (phy->id != 0)
sunxi_usb_phy_passby(index, SUNXI_USB_PASSBY_EN);
- enabled_hcd_count++;
+ sunxi_usb_phy_enabled_count++;
}
-void sunxi_usbc_disable(int index)
+void sunxi_usb_phy_exit(int index)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
- if (sunxi_usbc->id != 0)
+ if (phy->id != 0)
sunxi_usb_phy_passby(index, !SUNXI_USB_PASSBY_EN);
- clrbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask);
+ clrbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask);
- /* disable common PHY only once, for the last enabled hcd */
- if (enabled_hcd_count == 1)
+ /* disable common PHY only once, for the last enabled phy */
+ if (sunxi_usb_phy_enabled_count == 1)
clrbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
- enabled_hcd_count--;
+ sunxi_usb_phy_enabled_count--;
}
-void sunxi_usbc_vbus_enable(int index)
+void sunxi_usb_phy_power_on(int index)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
- if (sunxi_usbc->gpio_vbus >= 0)
- gpio_set_value(sunxi_usbc->gpio_vbus, 1);
+ if (phy->gpio_vbus >= 0)
+ gpio_set_value(phy->gpio_vbus, 1);
}
-void sunxi_usbc_vbus_disable(int index)
+void sunxi_usb_phy_power_off(int index)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
- if (sunxi_usbc->gpio_vbus >= 0)
- gpio_set_value(sunxi_usbc->gpio_vbus, 0);
+ if (phy->gpio_vbus >= 0)
+ gpio_set_value(phy->gpio_vbus, 0);
}
-int sunxi_usbc_vbus_detect(int index)
+int sunxi_usb_phy_vbus_detect(int index)
{
- struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
+ struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
int err, retries = 3;
- if (sunxi_usbc->gpio_vbus_det < 0) {
+ if (phy->gpio_vbus_det < 0) {
eprintf("Error: invalid vbus detection pin\n");
- return sunxi_usbc->gpio_vbus_det;
+ return phy->gpio_vbus_det;
}
- err = gpio_get_value(sunxi_usbc->gpio_vbus_det);
+ err = gpio_get_value(phy->gpio_vbus_det);
/*
* Vbus may have been provided by the board and just been turned of
* some milliseconds ago on reset, what we're measuring then is a
*/
while (err > 0 && retries--) {
mdelay(100);
- err = gpio_get_value(sunxi_usbc->gpio_vbus_det);
+ err = gpio_get_value(phy->gpio_vbus_det);
}
return err;