// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (c) 2021 Aspeed Technology Inc. */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/prefetch.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/slab.h> #define AST_UDC_NUM_ENDPOINTS … #define AST_UDC_EP0_MAX_PACKET … #define AST_UDC_EPn_MAX_PACKET … #define AST_UDC_DESCS_COUNT … #define AST_UDC_DESC_MODE … #define AST_UDC_EP_DMA_SIZE … /***************************** * * * UDC register definitions * * * *****************************/ #define AST_UDC_FUNC_CTRL … #define AST_UDC_CONFIG … #define AST_UDC_IER … #define AST_UDC_ISR … #define AST_UDC_EP_ACK_IER … #define AST_UDC_EP_NAK_IER … #define AST_UDC_EP_ACK_ISR … #define AST_UDC_EP_NAK_ISR … #define AST_UDC_DEV_RESET … #define AST_UDC_STS … #define AST_VHUB_EP_DATA … #define AST_VHUB_ISO_TX_FAIL … #define AST_UDC_EP0_CTRL … #define AST_UDC_EP0_DATA_BUFF … #define AST_UDC_SETUP0 … #define AST_UDC_SETUP1 … /* Main control reg */ #define USB_PHY_CLK_EN … #define USB_FIFO_DYN_PWRD_EN … #define USB_EP_LONG_DESC … #define USB_BIST_TEST_PASS … #define USB_BIST_TURN_ON … #define USB_PHY_RESET_DIS … #define USB_TEST_MODE(x) … #define USB_FORCE_TIMER_HS … #define USB_FORCE_HS … #define USB_REMOTE_WAKEUP_12MS … #define USB_REMOTE_WAKEUP_EN … #define USB_AUTO_REMOTE_WAKEUP_EN … #define USB_STOP_CLK_IN_SUPEND … #define USB_UPSTREAM_FS … #define USB_UPSTREAM_EN … /* Main config reg */ #define UDC_CFG_SET_ADDR(x) … #define UDC_CFG_ADDR_MASK … /* Interrupt ctrl & status reg */ #define UDC_IRQ_EP_POOL_NAK … #define UDC_IRQ_EP_POOL_ACK_STALL … #define UDC_IRQ_BUS_RESUME … #define UDC_IRQ_BUS_SUSPEND … #define UDC_IRQ_BUS_RESET … #define UDC_IRQ_EP0_IN_DATA_NAK … #define UDC_IRQ_EP0_IN_ACK_STALL … #define UDC_IRQ_EP0_OUT_NAK … #define UDC_IRQ_EP0_OUT_ACK_STALL … #define UDC_IRQ_EP0_SETUP … #define UDC_IRQ_ACK_ALL … /* EP isr reg */ #define USB_EP3_ISR … #define USB_EP2_ISR … #define USB_EP1_ISR … #define USB_EP0_ISR … #define UDC_IRQ_EP_ACK_ALL … /*Soft reset reg */ #define ROOT_UDC_SOFT_RESET … /* USB status reg */ #define UDC_STS_HIGHSPEED … /* Programmable EP data toggle */ #define EP_TOGGLE_SET_EPNUM(x) … /* EP0 ctrl reg */ #define EP0_GET_RX_LEN(x) … #define EP0_TX_LEN(x) … #define EP0_RX_BUFF_RDY … #define EP0_TX_BUFF_RDY … #define EP0_STALL … /************************************* * * * per-endpoint register definitions * * * *************************************/ #define AST_UDC_EP_CONFIG … #define AST_UDC_EP_DMA_CTRL … #define AST_UDC_EP_DMA_BUFF … #define AST_UDC_EP_DMA_STS … #define AST_UDC_EP_BASE … #define AST_UDC_EP_OFFSET … /* EP config reg */ #define EP_SET_MAX_PKT(x) … #define EP_DATA_FETCH_CTRL(x) … #define EP_AUTO_DATA_DISABLE … #define EP_SET_EP_STALL … #define EP_SET_EP_NUM(x) … #define EP_SET_TYPE_MASK(x) … #define EP_TYPE_BULK … #define EP_TYPE_INT … #define EP_TYPE_ISO … #define EP_DIR_OUT … #define EP_ALLOCATED_MASK … #define EP_ENABLE … /* EP DMA ctrl reg */ #define EP_DMA_CTRL_GET_PROC_STS(x) … #define EP_DMA_CTRL_STS_RX_IDLE … #define EP_DMA_CTRL_STS_TX_IDLE … #define EP_DMA_CTRL_IN_LONG_MODE … #define EP_DMA_CTRL_RESET … #define EP_DMA_SINGLE_STAGE … #define EP_DMA_DESC_MODE … /* EP DMA status reg */ #define EP_DMA_SET_TX_SIZE(x) … #define EP_DMA_GET_TX_SIZE(x) … #define EP_DMA_GET_RPTR(x) … #define EP_DMA_GET_WPTR(x) … #define EP_DMA_SINGLE_KICK … /* EP desc reg */ #define AST_EP_DMA_DESC_INTR_ENABLE … #define AST_EP_DMA_DESC_PID_DATA0 … #define AST_EP_DMA_DESC_PID_DATA2 … #define AST_EP_DMA_DESC_PID_DATA1 … #define AST_EP_DMA_DESC_PID_MDATA … #define EP_DESC1_IN_LEN(x) … #define AST_EP_DMA_DESC_MAX_LEN … struct ast_udc_request { … }; #define to_ast_req(__req) … struct ast_dma_desc { … }; struct ast_udc_ep { … }; #define to_ast_ep(__ep) … struct ast_udc_dev { … }; #define to_ast_dev(__g) … static const char * const ast_ep_name[] = …; #ifdef AST_UDC_DEBUG_ALL #define AST_UDC_DEBUG #define AST_SETUP_DEBUG #define AST_EP_DEBUG #define AST_ISR_DEBUG #endif #ifdef AST_SETUP_DEBUG #define SETUP_DBG … #else #define SETUP_DBG(u, fmt, ...) … #endif #ifdef AST_EP_DEBUG #define EP_DBG … #else #define EP_DBG(ep, fmt, ...) … #endif #ifdef AST_UDC_DEBUG #define UDC_DBG … #else #define UDC_DBG(u, fmt, ...) … #endif #ifdef AST_ISR_DEBUG #define ISR_DBG … #else #define ISR_DBG(u, fmt, ...) … #endif /*-------------------------------------------------------------------------*/ #define ast_udc_read(udc, offset) … #define ast_udc_write(udc, val, offset) … #define ast_ep_read(ep, reg) … #define ast_ep_write(ep, val, reg) … /*-------------------------------------------------------------------------*/ static void ast_udc_done(struct ast_udc_ep *ep, struct ast_udc_request *req, int status) { … } static void ast_udc_nuke(struct ast_udc_ep *ep, int status) { … } /* * Stop activity on all endpoints. * Device controller for which EP activity is to be stopped. * * All the endpoints are stopped and any pending transfer requests if any on * the endpoint are terminated. */ static void ast_udc_stop_activity(struct ast_udc_dev *udc) { … } static int ast_udc_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) { … } static int ast_udc_ep_disable(struct usb_ep *_ep) { … } static struct usb_request *ast_udc_ep_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) { … } static void ast_udc_ep_free_request(struct usb_ep *_ep, struct usb_request *_req) { … } static int ast_dma_descriptor_setup(struct ast_udc_ep *ep, u32 dma_buf, u16 tx_len, struct ast_udc_request *req) { … } static void ast_udc_epn_kick(struct ast_udc_ep *ep, struct ast_udc_request *req) { … } static void ast_udc_epn_kick_desc(struct ast_udc_ep *ep, struct ast_udc_request *req) { … } static void ast_udc_ep0_queue(struct ast_udc_ep *ep, struct ast_udc_request *req) { … } static int ast_udc_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) { … } static int ast_udc_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) { … } static int ast_udc_ep_set_halt(struct usb_ep *_ep, int value) { … } static const struct usb_ep_ops ast_udc_ep_ops = …; static void ast_udc_ep0_rx(struct ast_udc_dev *udc) { … } static void ast_udc_ep0_tx(struct ast_udc_dev *udc) { … } static void ast_udc_ep0_out(struct ast_udc_dev *udc) { … } static void ast_udc_ep0_in(struct ast_udc_dev *udc) { … } static void ast_udc_epn_handle(struct ast_udc_dev *udc, u16 ep_num) { … } static void ast_udc_epn_handle_desc(struct ast_udc_dev *udc, u16 ep_num) { … } static void ast_udc_ep0_data_tx(struct ast_udc_dev *udc, u8 *tx_data, u32 len) { … } static void ast_udc_getstatus(struct ast_udc_dev *udc) { … } static void ast_udc_ep0_handle_setup(struct ast_udc_dev *udc) { … } static irqreturn_t ast_udc_isr(int irq, void *data) { … } static int ast_udc_gadget_getframe(struct usb_gadget *gadget) { … } static void ast_udc_wake_work(struct work_struct *work) { … } static void ast_udc_wakeup_all(struct ast_udc_dev *udc) { … } static int ast_udc_wakeup(struct usb_gadget *gadget) { … } /* * Activate/Deactivate link with host */ static int ast_udc_pullup(struct usb_gadget *gadget, int is_on) { … } static int ast_udc_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { … } static int ast_udc_stop(struct usb_gadget *gadget) { … } static const struct usb_gadget_ops ast_udc_ops = …; /* * Support 1 Control Endpoint. * Support multiple programmable endpoints that can be configured to * Bulk IN/OUT, Interrupt IN/OUT, and Isochronous IN/OUT type endpoint. */ static void ast_udc_init_ep(struct ast_udc_dev *udc) { … } static void ast_udc_init_dev(struct ast_udc_dev *udc) { … } static void ast_udc_init_hw(struct ast_udc_dev *udc) { … } static void ast_udc_remove(struct platform_device *pdev) { … } static int ast_udc_probe(struct platform_device *pdev) { … } static const struct of_device_id ast_udc_of_dt_ids[] = …; MODULE_DEVICE_TABLE(of, ast_udc_of_dt_ids); static struct platform_driver ast_udc_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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