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Merge pull request #212 from wangzhimin1179/linux-6.6.y
usb: phytium: Add support for Phytium USB controller
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‎Documentation/devicetree/bindings/usb/phytium,usb2.yaml‎

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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/usb/phytium,usb2.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Phytium USBHS-DRD controller bindings
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maintainers:
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- Chen Baozi <[email protected]>
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properties:
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compatible:
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const: phytium,usb2
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reg:
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items:
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- description: USB controller registers
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- description: PHY registers
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interrupts:
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maxItems: 1
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dr_mode:
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enum: [host, otg, peripheral]
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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usb2_0: usb2@31800000 {
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compatible = "phytium,usb2";
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reg = <0x0 0x31800000 0x0 0x80000>,
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<0x0 0x31990000 0x0 0x10000>;
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interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
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};

‎drivers/usb/Kconfig‎

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source "drivers/usb/isp1760/Kconfig"
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source "drivers/usb/phytium/Kconfig"
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comment "USB port drivers"
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if USB

‎drivers/usb/Makefile‎

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@@ -18,6 +18,7 @@ obj-$(CONFIG_USB_CDNS3) += cdns3/
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obj-$(CONFIG_USB_CDNSP_PCI) += cdns3/
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obj-$(CONFIG_USB_FOTG210) += fotg210/
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obj-$(CONFIG_USB_PHYTIUM) += phytium/
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obj-$(CONFIG_USB_MON) += mon/
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obj-$(CONFIG_USB_MTU3) += mtu3/

‎drivers/usb/phytium/Kconfig‎

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config USB_PHYTIUM
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tristate "Phytium USB Support"
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depends on USB
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depends on USB_GADGET
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help
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Say Y or M here if your system has a OTG USB Controller based on PHYTIUM SOC.
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like Pe220x.
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If you choose to build this driver is a dynamically linked modules, the module will
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be called phytium-usb.ko
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config USB_PHYTIUM_PCI
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tristate "Phytium PCI USB Support"
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default n
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depends on USB
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depends on USB_GADGET
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help
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Say Y or M here if your system has a OTG USB Controller based on PHYTIUM SOC.
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like Pe220x.
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If you choose to build this driver is a dynamically linked modules, the module will
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be called phytium-usb.ko

‎drivers/usb/phytium/Makefile‎

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# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_USB_PHYTIUM) += phytium-usb.o
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obj-$(CONFIG_USB_PHYTIUM_PCI) += phytium-usb-pci.o
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phytium-usb-y := core.o dma.o platform.o host.o gadget.o
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phytium-usb-pci-y := core.o dma.o pci.o host.o gadget.o

‎drivers/usb/phytium/core.c‎

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// SPDX-License-Identifier: GPL-2.0
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#include "core.h"
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int phytium_core_reset(struct phytium_cusb *config, bool skip_wait)
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{
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if (!config)
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return 0;
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spin_lock_init(&config->lock);
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return 0;
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}
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uint32_t phytium_read32(uint32_t *address)
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{
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return readl(address);
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}
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void phytium_write32(uint32_t *address, uint32_t value)
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{
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writel(value, address);
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}
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uint16_t phytium_read16(uint16_t *address)
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{
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return readw(address);
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}
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void phytium_write16(uint16_t *address, uint16_t value)
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{
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writew(value, address);
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}
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uint8_t phytium_read8(uint8_t *address)
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{
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return readb(address);
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}
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void phytium_write8(uint8_t *address, uint8_t value)
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{
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writeb(value, address);
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}
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‎drivers/usb/phytium/core.h‎

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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PHYTIUM_CORE_H__
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#define __PHYTIUM_CORE_H__
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#include <linux/usb/gadget.h>
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#include <linux/usb/otg.h>
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#include "host_api.h"
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#include "gadget.h"
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#define MAX_EPS_CHANNELS 16
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struct phytium_ep {
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struct phytium_cusb *config;
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u16 max_packet;
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u8 ep_num;
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struct GADGET_EP *gadget_ep;
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struct list_head req_list;
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struct usb_ep end_point;
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char name[12];
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u8 is_tx;
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const struct usb_endpoint_descriptor *desc;
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u8 busy;
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};
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struct phytium_request {
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struct usb_request request;
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struct GADGET_REQ *gadget_request;
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struct list_head list;
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struct phytium_ep *ep;
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struct phytium_cusb *config;
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u8 is_tx;
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u8 epnum;
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};
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struct phytium_cusb {
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struct device *dev;
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void __iomem *regs;
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void __iomem *phy_regs;
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int irq;
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spinlock_t lock;
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enum usb_dr_mode dr_mode;
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struct GADGET_OBJ *gadget_obj;
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struct GADGET_CFG gadget_cfg;
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struct GADGET_CALLBACKS gadget_callbacks;
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struct GADGET_SYSREQ gadget_sysreq;
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struct GADGET_DEV *gadget_dev;
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void *gadget_priv;
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struct usb_gadget gadget;
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struct usb_gadget_driver *gadget_driver;
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struct phytium_ep endpoints_tx[MAX_EPS_CHANNELS];
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struct phytium_ep endpoints_rx[MAX_EPS_CHANNELS];
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u8 ep0_data_stage_is_tx;
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struct HOST_OBJ *host_obj;
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struct HOST_CFG host_cfg;
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struct HOST_CALLBACKS host_callbacks;
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struct HOST_SYSREQ host_sysreq;
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void *host_priv;
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struct usb_hcd *hcd;
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struct DMA_OBJ *dma_obj;
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struct DMA_CFG dma_cfg;
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struct DMA_CALLBACKS dma_callbacks;
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struct DMA_SYSREQ dma_sysreq;
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bool isVhubHost;
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};
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int phytium_core_reset(struct phytium_cusb *config, bool skip_wait);
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int phytium_host_init(struct phytium_cusb *config);
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int phytium_host_uninit(struct phytium_cusb *config);
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#ifdef CONFIG_PM
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int phytium_host_resume(void *priv);
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int phytium_host_suspend(void *priv);
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int phytium_gadget_resume(void *priv);
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int phytium_gadget_suspend(void *priv);
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#endif
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int phytium_gadget_init(struct phytium_cusb *config);
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int phytium_gadget_uninit(struct phytium_cusb *config);
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uint32_t phytium_read32(uint32_t *address);
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void phytium_write32(uint32_t *address, uint32_t value);
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uint16_t phytium_read16(uint16_t *address);
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void phytium_write16(uint16_t *address, uint16_t value);
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uint8_t phytium_read8(uint8_t *address);
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void phytium_write8(uint8_t *address, uint8_t value);
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#endif

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