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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 50bb758c1e3424d9e1925588c9269b24418c2e04 / . / drivers / usb / gadget / rcar / fifo.h
blob: 86746ca9bddf4be96d1c463b096b5bb6fabeb442 [file] [log] [blame]
Vitaliy Vasylskyy50bb7582024-09-09 01:06:24 +0200[diff] [blame^]1/* SPDX-License-Identifier: GPL-1.0+ */
2/*
3 * Renesas USB driver
4 *
5 * Copyright (C) 2011 Renesas Solutions Corp.
6 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 */
8#ifndef RENESAS_USB_FIFO_H
9#define RENESAS_USB_FIFO_H
10
11#include <dma.h>
12#include "pipe.h"
13
14/*
15 * Drivers, using this library are expected to embed struct shdma_dev,
16 * struct shdma_chan, struct shdma_desc, and struct shdma_slave
17 * in their respective device, channel, descriptor and slave objects.
18 */
19
20struct shdma_slave {
21 int slave_id;
22};
23
24/* Used by slave DMA clients to request DMA to/from a specific peripheral */
25struct sh_dmae_slave {
26 struct shdma_slave shdma_slave; /* Set by the platform */
27};
28
29struct usbhs_fifo {
30 char *name;
31 u32 port; /* xFIFO */
32 u32 sel; /* xFIFOSEL */
33 u32 ctr; /* xFIFOCTR */
34
35 struct usbhs_pipe *pipe;
36
37 struct dma_chan *tx_chan;
38 struct dma_chan *rx_chan;
39
40 struct sh_dmae_slave tx_slave;
41 struct sh_dmae_slave rx_slave;
42};
43
44#define USBHS_MAX_NUM_DFIFO 4
45struct usbhs_fifo_info {
46 struct usbhs_fifo cfifo;
47 struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
48};
49#define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n]))
50#define usbhs_for_each_dfifo(priv, dfifo, i) \
51 for ((i) = 0; \
52 ((i) < USBHS_MAX_NUM_DFIFO) && \
53 ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \
54 (i)++)
55
56struct usbhs_pkt_handle;
57struct usbhs_pkt {
58 struct list_head node;
59 struct usbhs_pipe *pipe;
60 const struct usbhs_pkt_handle *handler;
61 void (*done)(struct usbhs_priv *priv,
62 struct usbhs_pkt *pkt);
63 struct work_struct work;
64 dma_addr_t dma;
65 const struct dmaengine_result *dma_result;
66 void *buf;
67 int length;
68 int trans;
69 int actual;
70 int zero;
71 int sequence;
72};
73
74struct usbhs_pkt_handle {
75 int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
76 int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
77 int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
78};
79
80/*
81 * fifo
82 */
83int usbhs_fifo_probe(struct usbhs_priv *priv);
84void usbhs_fifo_remove(struct usbhs_priv *priv);
85void usbhs_fifo_init(struct usbhs_priv *priv);
86void usbhs_fifo_quit(struct usbhs_priv *priv);
87void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);
88
89/*
90 * packet info
91 */
92extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
93extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
94extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
95
96extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
97extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
98
99extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
100extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
101
102extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
103extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
104
105void usbhs_pkt_init(struct usbhs_pkt *pkt);
106void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
107 void (*done)(struct usbhs_priv *priv,
108 struct usbhs_pkt *pkt),
109 void *buf, int len, int zero, int sequence);
110struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
111void usbhs_pkt_start(struct usbhs_pipe *pipe);
112struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe);
113
114#endif /* RENESAS_USB_FIFO_H */