forked from Minki/linux
51f141a97a
The current code has info->bufnmb_last to calculate the BUFNMB bits of
PIPEBUF register. However, since the bufnmb_last is initialized in
the usbhs_pipe_init() only, this driver is possible to set unexpected
value to the register if usb_ep_{enable,disable}() are called many times.
So, this patch modifies the pipe configuration via struct
renesas_usbhs_driver_param to simplify the code. Also this patch changes:
- a double buffer configuration
- isochronous buffer size from 512 to 1024
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
/*
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* Renesas USB driver
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*
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* Copyright (C) 2011 Renesas Solutions Corp.
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef RENESAS_USB_PIPE_H
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#define RENESAS_USB_PIPE_H
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#include "common.h"
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#include "fifo.h"
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/*
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* struct
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*/
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struct usbhs_pipe {
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u32 pipe_type; /* USB_ENDPOINT_XFER_xxx */
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struct usbhs_priv *priv;
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struct usbhs_fifo *fifo;
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struct list_head list;
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int maxp;
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u32 flags;
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#define USBHS_PIPE_FLAGS_IS_USED (1 << 0)
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#define USBHS_PIPE_FLAGS_IS_DIR_IN (1 << 1)
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#define USBHS_PIPE_FLAGS_IS_DIR_HOST (1 << 2)
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#define USBHS_PIPE_FLAGS_IS_RUNNING (1 << 3)
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struct usbhs_pkt_handle *handler;
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void *mod_private;
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};
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struct usbhs_pipe_info {
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struct usbhs_pipe *pipe;
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int size; /* array size of "pipe" */
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int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map);
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};
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/*
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* pipe list
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*/
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#define __usbhs_for_each_pipe(start, pos, info, i) \
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for ((i) = start; \
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((i) < (info)->size) && ((pos) = (info)->pipe + (i)); \
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(i)++)
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#define usbhs_for_each_pipe(pos, priv, i) \
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__usbhs_for_each_pipe(1, pos, &((priv)->pipe_info), i)
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#define usbhs_for_each_pipe_with_dcp(pos, priv, i) \
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__usbhs_for_each_pipe(0, pos, &((priv)->pipe_info), i)
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/*
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* data
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*/
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#define usbhs_priv_to_pipeinfo(pr) (&(pr)->pipe_info)
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/*
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* pipe control
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*/
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char *usbhs_pipe_name(struct usbhs_pipe *pipe);
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struct usbhs_pipe
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*usbhs_pipe_malloc(struct usbhs_priv *priv, int endpoint_type, int dir_in);
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void usbhs_pipe_free(struct usbhs_pipe *pipe);
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int usbhs_pipe_probe(struct usbhs_priv *priv);
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void usbhs_pipe_remove(struct usbhs_priv *priv);
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int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
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int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe);
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int usbhs_pipe_is_running(struct usbhs_pipe *pipe);
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void usbhs_pipe_running(struct usbhs_pipe *pipe, int running);
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void usbhs_pipe_init(struct usbhs_priv *priv,
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int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map));
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int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe);
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void usbhs_pipe_clear(struct usbhs_pipe *pipe);
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int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
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void usbhs_pipe_enable(struct usbhs_pipe *pipe);
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void usbhs_pipe_disable(struct usbhs_pipe *pipe);
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void usbhs_pipe_stall(struct usbhs_pipe *pipe);
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int usbhs_pipe_is_stall(struct usbhs_pipe *pipe);
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void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len);
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void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo);
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void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel,
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u16 epnum, u16 maxp);
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void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable);
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#define usbhs_pipe_sequence_data0(pipe) usbhs_pipe_data_sequence(pipe, 0)
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#define usbhs_pipe_sequence_data1(pipe) usbhs_pipe_data_sequence(pipe, 1)
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void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int data);
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#define usbhs_pipe_to_priv(p) ((p)->priv)
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#define usbhs_pipe_number(p) (int)((p) - (p)->priv->pipe_info.pipe)
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#define usbhs_pipe_is_dcp(p) ((p)->priv->pipe_info.pipe == (p))
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#define usbhs_pipe_to_fifo(p) ((p)->fifo)
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#define usbhs_pipe_is_busy(p) usbhs_pipe_to_fifo(p)
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#define usbhs_pipe_type(p) ((p)->pipe_type)
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#define usbhs_pipe_type_is(p, t) ((p)->pipe_type == t)
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/*
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* dcp control
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*/
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struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv);
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void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe);
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void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out);
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#endif /* RENESAS_USB_PIPE_H */
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