Merge tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux into drm...
[linux-2.6-block.git] / drivers / usb / renesas_usbhs / fifo.h
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1/*
2 * Renesas USB driver
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 */
17#ifndef RENESAS_USB_FIFO_H
18#define RENESAS_USB_FIFO_H
19
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20#include <linux/interrupt.h>
21#include <linux/sh_dma.h>
6e4b74e4 22#include <linux/workqueue.h>
e73a9891 23#include <asm/dma.h>
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24#include "pipe.h"
25
d3af90a5 26struct usbhs_fifo {
e73a9891 27 char *name;
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28 u32 port; /* xFIFO */
29 u32 sel; /* xFIFOSEL */
30 u32 ctr; /* xFIFOCTR */
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31
32 struct usbhs_pipe *pipe;
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33
34 struct dma_chan *tx_chan;
35 struct dma_chan *rx_chan;
36
37 struct sh_dmae_slave tx_slave;
38 struct sh_dmae_slave rx_slave;
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39};
40
d3cf6a4b 41#define USBHS_MAX_NUM_DFIFO 4
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42struct usbhs_fifo_info {
43 struct usbhs_fifo cfifo;
c907e423 44 struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
d3af90a5 45};
3a2634a5 46#define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n]))
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47#define usbhs_for_each_dfifo(priv, dfifo, i) \
48 for ((i) = 0; \
49 ((i) < USBHS_MAX_NUM_DFIFO) && \
50 ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \
51 (i)++)
d3af90a5 52
dad67397 53struct usbhs_pkt_handle;
4bd04811 54struct usbhs_pkt {
6acb95d4 55 struct list_head node;
4bd04811 56 struct usbhs_pipe *pipe;
fcb42e23 57 const struct usbhs_pkt_handle *handler;
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58 void (*done)(struct usbhs_priv *priv,
59 struct usbhs_pkt *pkt);
6e4b74e4 60 struct work_struct work;
e73a9891 61 dma_addr_t dma;
ab330cf3 62 dma_cookie_t cookie;
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63 void *buf;
64 int length;
e73a9891 65 int trans;
4bd04811 66 int actual;
659d4954 67 int zero;
3edeee38 68 int sequence;
4bd04811 69};
e8d548d5 70
dad67397 71struct usbhs_pkt_handle {
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72 int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
73 int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
e73a9891 74 int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
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75};
76
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77/*
78 * fifo
79 */
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80int usbhs_fifo_probe(struct usbhs_priv *priv);
81void usbhs_fifo_remove(struct usbhs_priv *priv);
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82void usbhs_fifo_init(struct usbhs_priv *priv);
83void usbhs_fifo_quit(struct usbhs_priv *priv);
cdeb7943 84void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);
e8d548d5 85
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86/*
87 * packet info
88 */
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89extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
90extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
91extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
dad67397 92
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93extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
94extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
e73a9891 95
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96extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
97extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
9e74d601 98
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99extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
100extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
e73a9891 101
6acb95d4 102void usbhs_pkt_init(struct usbhs_pkt *pkt);
659d4954 103void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
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104 void (*done)(struct usbhs_priv *priv,
105 struct usbhs_pkt *pkt),
3edeee38 106 void *buf, int len, int zero, int sequence);
97664a20 107struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
51b8a021 108void usbhs_pkt_start(struct usbhs_pipe *pipe);
dad67397 109
e8d548d5 110#endif /* RENESAS_USB_FIFO_H */