sunxi: usbc: Add support for usb0 to the common usbc code

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

4 files changed, 37 insertions, 9 deletions

diff --git a/arch/arm/cpu/armv7/sunxi/usbc.c b/arch/arm/cpu/armv7/sunxi/usbc.c
index 621992c..4f11da5 100644
--- a/arch/arm/cpu/armv7/sunxi/usbc.c
+++ b/arch/arm/cpu/armv7/sunxi/usbc.c
@@ -36,6 +36,16 @@ static struct sunxi_usbc_hcd {
 	int id;
 } sunxi_usbc_hcd[] = {
 	{
+		.usb_rst_mask = CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK,
+		.ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB0,
+#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
+		.irq = 71,
+#else
+		.irq = 38,
+#endif
+		.id = 0,
+	},
+	{
 		.usb_rst_mask = CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK,
 		.ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0,
 #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
@@ -78,6 +88,7 @@ void *sunxi_usbc_get_io_base(int index)
 static int get_vbus_gpio(int index)
 {
 	switch (index) {
+	case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_PIN);
 	case 1: return sunxi_name_to_gpio(CONFIG_USB1_VBUS_PIN);
 	case 2: return sunxi_name_to_gpio(CONFIG_USB2_VBUS_PIN);
 	}
@@ -117,6 +128,10 @@ static void sunxi_usb_phy_init(struct sunxi_usbc_hcd *sunxi_usbc)
 	 * translated from Chinese, you have been warned!
 	 */
 
+	/* Regulation 45 ohms */
+	if (sunxi_usbc->id == 0)
+		usb_phy_write(sunxi_usbc, 0x0c, 0x01, 1);
+
 	/* adjust PHY's magnitude and rate */
 	usb_phy_write(sunxi_usbc, 0x20, 0x14, 5);
 
@@ -151,7 +166,7 @@ static void sunxi_usb_passby(struct sunxi_usbc_hcd *sunxi_usbc, int enable)
 
 int sunxi_usbc_request_resources(int index)
 {
-	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index - 1];
+	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
 
 	sunxi_usbc->gpio_vbus = get_vbus_gpio(index);
 	if (sunxi_usbc->gpio_vbus != -1)
@@ -162,7 +177,7 @@ int sunxi_usbc_request_resources(int index)
 
 int sunxi_usbc_free_resources(int index)
 {
-	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index - 1];
+	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
 
 	if (sunxi_usbc->gpio_vbus != -1)
 		return gpio_free(sunxi_usbc->gpio_vbus);
@@ -172,7 +187,7 @@ int sunxi_usbc_free_resources(int index)
 
 void sunxi_usbc_enable(int index)
 {
-	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index - 1];
+	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
 	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
 
 	/* enable common PHY only once */
@@ -187,17 +202,19 @@ void sunxi_usbc_enable(int index)
 
 	sunxi_usb_phy_init(sunxi_usbc);
 
-	sunxi_usb_passby(sunxi_usbc, SUNXI_USB_PASSBY_EN);
+	if (sunxi_usbc->id != 0)
+		sunxi_usb_passby(sunxi_usbc, SUNXI_USB_PASSBY_EN);
 
 	enabled_hcd_count++;
 }
 
 void sunxi_usbc_disable(int index)
 {
-	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index - 1];
+	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
 	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
 
-	sunxi_usb_passby(sunxi_usbc, !SUNXI_USB_PASSBY_EN);
+	if (sunxi_usbc->id != 0)
+		sunxi_usb_passby(sunxi_usbc, !SUNXI_USB_PASSBY_EN);
 
 #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
 	clrbits_le32(&ccm->ahb_reset0_cfg, sunxi_usbc->ahb_clk_mask);
@@ -214,7 +231,7 @@ void sunxi_usbc_disable(int index)
 
 void sunxi_usbc_vbus_enable(int index)
 {
-	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index - 1];
+	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
 
 	if (sunxi_usbc->gpio_vbus != -1)
 		gpio_direction_output(sunxi_usbc->gpio_vbus, 1);
@@ -222,7 +239,7 @@ void sunxi_usbc_vbus_enable(int index)
 
 void sunxi_usbc_vbus_disable(int index)
 {
-	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index - 1];
+	struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
 
 	if (sunxi_usbc->gpio_vbus != -1)
 		gpio_direction_output(sunxi_usbc->gpio_vbus, 0);
diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun4i.h b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h
index a6d129c..84a9a2b 100644
--- a/arch/arm/include/asm/arch-sunxi/clock_sun4i.h
+++ b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h
@@ -302,10 +302,12 @@ struct sunxi_ccm_reg {
 #define CCM_GMAC_CTRL_GPIT_MII (0x0 << 2)
 #define CCM_GMAC_CTRL_GPIT_RGMII (0x1 << 2)
 
+#define CCM_USB_CTRL_PHY0_RST (0x1 << 0)
 #define CCM_USB_CTRL_PHY1_RST (0x1 << 1)
 #define CCM_USB_CTRL_PHY2_RST (0x1 << 2)
 #define CCM_USB_CTRL_PHYGATE (0x1 << 8)
-/* These 2 are sun6i only, define them as 0 on sun4i */
+/* These 3 are sun6i only, define them as 0 on sun4i */
+#define CCM_USB_CTRL_PHY0_CLK 0
 #define CCM_USB_CTRL_PHY1_CLK 0
 #define CCM_USB_CTRL_PHY2_CLK 0
 
diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
index f85f94d..4711260 100644
--- a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
+++ b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
@@ -229,10 +229,12 @@ struct sunxi_ccm_reg {
 #define CCM_MMC_CTRL_PLL6		(0x1 << 24)
 #define CCM_MMC_CTRL_ENABLE		(0x1 << 31)
 
+#define CCM_USB_CTRL_PHY0_RST (0x1 << 0)
 #define CCM_USB_CTRL_PHY1_RST (0x1 << 1)
 #define CCM_USB_CTRL_PHY2_RST (0x1 << 2)
 /* There is no global phy clk gate on sun6i, define as 0 */
 #define CCM_USB_CTRL_PHYGATE 0
+#define CCM_USB_CTRL_PHY0_CLK (0x1 << 8)
 #define CCM_USB_CTRL_PHY1_CLK (0x1 << 9)
 #define CCM_USB_CTRL_PHY2_CLK (0x1 << 10)
 
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index c5105bb..6a4d764 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -267,6 +267,13 @@ config MMC_SUNXI_SLOT_EXTRA
 	slot or emmc on mmc1 - mmc3. Setting this to 1, 2 or 3 will enable
 	support for this.
 
+config USB0_VBUS_PIN
+	string "Vbus enable pin for usb0 (otg)"
+	default ""
+	---help---
+	Set the Vbus enable pin for usb0 (otg). This takes a string in the
+	format understood by sunxi_name_to_gpio, e.g. PH1 for pin 1 of port H.
+
 config USB1_VBUS_PIN
 	string "Vbus enable pin for usb1 (ehci0)"
 	default "PH6" if MACH_SUN4I || MACH_SUN7I