sunxi: ohci: Add ohci usb host controller support
This commit adds support for the OHCI companion controller, which makes
usb-1 devices directly plugged into to usb root port work.
Note for now this switches usb-keyboard support for sunxi back from int-queue
support to the old interrupt polling method. Adding int-queue support to the
ohci code and switching back to int-queue support is in the works.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/drivers/usb/host/ohci-sunxi.c b/drivers/usb/host/ohci-sunxi.c
new file mode 100644
index 0000000..e33a8f7
--- /dev/null
+++ b/drivers/usb/host/ohci-sunxi.c
@@ -0,0 +1,104 @@
+/*
+ * Sunxi ohci glue
+ *
+ * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on code from
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/usb_phy.h>
+#include <asm/io.h>
+#include <dm.h>
+#include <usb.h>
+#include "ohci.h"
+
+struct ohci_sunxi_priv {
+ ohci_t ohci;
+ int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */
+ int usb_gate_mask; /* Mask of usb_clk_cfg clk gate bits for this hcd */
+ int phy_index; /* Index of the usb-phy attached to this hcd */
+};
+
+static int ohci_usb_probe(struct udevice *dev)
+{
+ struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev);
+ struct ohci_sunxi_priv *priv = dev_get_priv(dev);
+ struct ohci_regs *regs = (struct ohci_regs *)dev_get_addr(dev);
+
+ bus_priv->companion = true;
+
+ /*
+ * This should go away once we've moved to the driver model for
+ * clocks resp. phys.
+ */
+ if (regs == (void *)(SUNXI_USB1_BASE + 0x400)) {
+ priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0;
+ priv->usb_gate_mask = CCM_USB_CTRL_OHCI0_CLK;
+ priv->phy_index = 1;
+ } else {
+ priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI1;
+ priv->usb_gate_mask = CCM_USB_CTRL_OHCI1_CLK;
+ priv->phy_index = 2;
+ }
+
+ setbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask);
+ setbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask);
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+ setbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask);
+#endif
+
+ sunxi_usb_phy_init(priv->phy_index);
+ sunxi_usb_phy_power_on(priv->phy_index);
+
+ return ohci_register(dev, regs);
+}
+
+static int ohci_usb_remove(struct udevice *dev)
+{
+ struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ struct ohci_sunxi_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = ohci_deregister(dev);
+ if (ret)
+ return ret;
+
+ sunxi_usb_phy_power_off(priv->phy_index);
+ sunxi_usb_phy_exit(priv->phy_index);
+
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+ clrbits_le32(&ccm->ahb_reset0_cfg, priv->ahb_gate_mask);
+#endif
+ clrbits_le32(&ccm->usb_clk_cfg, priv->usb_gate_mask);
+ clrbits_le32(&ccm->ahb_gate0, priv->ahb_gate_mask);
+
+ return 0;
+}
+
+static const struct udevice_id ohci_usb_ids[] = {
+ { .compatible = "allwinner,sun4i-a10-ohci", },
+ { .compatible = "allwinner,sun5i-a13-ohci", },
+ { .compatible = "allwinner,sun6i-a31-ohci", },
+ { .compatible = "allwinner,sun7i-a20-ohci", },
+ { .compatible = "allwinner,sun8i-a23-ohci", },
+ { .compatible = "allwinner,sun9i-a80-ohci", },
+ { }
+};
+
+U_BOOT_DRIVER(usb_ohci) = {
+ .name = "ohci_sunxi",
+ .id = UCLASS_USB,
+ .of_match = ohci_usb_ids,
+ .probe = ohci_usb_probe,
+ .remove = ohci_usb_remove,
+ .ops = &ohci_usb_ops,
+ .platdata_auto_alloc_size = sizeof(struct usb_platdata),
+ .priv_auto_alloc_size = sizeof(struct ohci_sunxi_priv),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};