850 строки
17 KiB
C
850 строки
17 KiB
C
// SPDX-License-Identifier: GPL-1.0+
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/*
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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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#include <linux/delay.h>
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#include <linux/slab.h>
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#include "common.h"
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#include "pipe.h"
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/*
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* macros
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*/
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#define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2)
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#define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f)
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#define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f)
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#define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f)
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#define usbhsp_flags_init(p) do {(p)->flags = 0; } while (0)
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/*
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* for debug
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*/
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static char *usbhsp_pipe_name[] = {
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[USB_ENDPOINT_XFER_CONTROL] = "DCP",
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[USB_ENDPOINT_XFER_BULK] = "BULK",
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[USB_ENDPOINT_XFER_INT] = "INT",
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[USB_ENDPOINT_XFER_ISOC] = "ISO",
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};
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char *usbhs_pipe_name(struct usbhs_pipe *pipe)
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{
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return usbhsp_pipe_name[usbhs_pipe_type(pipe)];
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}
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static struct renesas_usbhs_driver_pipe_config
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*usbhsp_get_pipe_config(struct usbhs_priv *priv, int pipe_num)
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{
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struct renesas_usbhs_driver_pipe_config *pipe_configs =
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usbhs_get_dparam(priv, pipe_configs);
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return &pipe_configs[pipe_num];
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}
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/*
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* DCPCTR/PIPEnCTR functions
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*/
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static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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int offset = usbhsp_addr_offset(pipe);
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if (usbhs_pipe_is_dcp(pipe))
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usbhs_bset(priv, DCPCTR, mask, val);
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else
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usbhs_bset(priv, PIPEnCTR + offset, mask, val);
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}
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static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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int offset = usbhsp_addr_offset(pipe);
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if (usbhs_pipe_is_dcp(pipe))
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return usbhs_read(priv, DCPCTR);
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else
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return usbhs_read(priv, PIPEnCTR + offset);
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}
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/*
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* DCP/PIPE functions
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*/
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static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe,
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u16 dcp_reg, u16 pipe_reg,
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u16 mask, u16 val)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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if (usbhs_pipe_is_dcp(pipe))
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usbhs_bset(priv, dcp_reg, mask, val);
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else
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usbhs_bset(priv, pipe_reg, mask, val);
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}
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static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe,
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u16 dcp_reg, u16 pipe_reg)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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if (usbhs_pipe_is_dcp(pipe))
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return usbhs_read(priv, dcp_reg);
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else
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return usbhs_read(priv, pipe_reg);
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}
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/*
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* DCPCFG/PIPECFG functions
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*/
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static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
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{
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__usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val);
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}
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static u16 usbhsp_pipe_cfg_get(struct usbhs_pipe *pipe)
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{
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return __usbhsp_pipe_xxx_get(pipe, DCPCFG, PIPECFG);
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}
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/*
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* PIPEnTRN/PIPEnTRE functions
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*/
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static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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struct device *dev = usbhs_priv_to_dev(priv);
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int num = usbhs_pipe_number(pipe);
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u16 reg;
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/*
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* It is impossible to calculate address,
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* since PIPEnTRN addresses were mapped randomly.
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*/
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#define CASE_PIPExTRN(a) \
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case 0x ## a: \
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reg = PIPE ## a ## TRN; \
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break;
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switch (num) {
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CASE_PIPExTRN(1);
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CASE_PIPExTRN(2);
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CASE_PIPExTRN(3);
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CASE_PIPExTRN(4);
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CASE_PIPExTRN(5);
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CASE_PIPExTRN(B);
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CASE_PIPExTRN(C);
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CASE_PIPExTRN(D);
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CASE_PIPExTRN(E);
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CASE_PIPExTRN(F);
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CASE_PIPExTRN(9);
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CASE_PIPExTRN(A);
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default:
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dev_err(dev, "unknown pipe (%d)\n", num);
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return;
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}
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__usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val);
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}
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static void usbhsp_pipe_tre_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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struct device *dev = usbhs_priv_to_dev(priv);
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int num = usbhs_pipe_number(pipe);
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u16 reg;
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/*
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* It is impossible to calculate address,
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* since PIPEnTRE addresses were mapped randomly.
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*/
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#define CASE_PIPExTRE(a) \
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case 0x ## a: \
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reg = PIPE ## a ## TRE; \
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break;
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switch (num) {
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CASE_PIPExTRE(1);
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CASE_PIPExTRE(2);
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CASE_PIPExTRE(3);
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CASE_PIPExTRE(4);
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CASE_PIPExTRE(5);
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CASE_PIPExTRE(B);
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CASE_PIPExTRE(C);
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CASE_PIPExTRE(D);
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CASE_PIPExTRE(E);
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CASE_PIPExTRE(F);
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CASE_PIPExTRE(9);
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CASE_PIPExTRE(A);
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default:
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dev_err(dev, "unknown pipe (%d)\n", num);
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return;
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}
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__usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val);
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}
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/*
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* PIPEBUF
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*/
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static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
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{
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if (usbhs_pipe_is_dcp(pipe))
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return;
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__usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val);
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}
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/*
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* DCPMAXP/PIPEMAXP
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*/
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static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
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{
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__usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val);
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}
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/*
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* pipe control functions
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*/
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static void usbhsp_pipe_select(struct usbhs_pipe *pipe)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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/*
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* On pipe, this is necessary before
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* accesses to below registers.
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*
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* PIPESEL : usbhsp_pipe_select
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* PIPECFG : usbhsp_pipe_cfg_xxx
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* PIPEBUF : usbhsp_pipe_buf_xxx
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* PIPEMAXP : usbhsp_pipe_maxp_xxx
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* PIPEPERI
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*/
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/*
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* if pipe is dcp, no pipe is selected.
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* it is no problem, because dcp have its register
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*/
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usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe));
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}
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static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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int timeout = 1024;
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u16 mask = usbhs_mod_is_host(priv) ? (CSSTS | PID_MASK) : PID_MASK;
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/*
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* make sure....
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*
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* Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is
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* specified by the CURPIPE bits.
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* When changing the setting of this bit after changing
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* the PID bits for the selected pipe from BUF to NAK,
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* check that CSSTS = 0 and PBUSY = 0.
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*/
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/*
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* CURPIPE bit = 0
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*
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* see also
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* "Operation"
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* - "Pipe Control"
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* - "Pipe Control Registers Switching Procedure"
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*/
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usbhs_write(priv, CFIFOSEL, 0);
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usbhs_pipe_disable(pipe);
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do {
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if (!(usbhsp_pipectrl_get(pipe) & mask))
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return 0;
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udelay(10);
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} while (timeout--);
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return -EBUSY;
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}
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int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe)
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{
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u16 val;
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val = usbhsp_pipectrl_get(pipe);
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if (val & BSTS)
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return 0;
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return -EBUSY;
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}
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bool usbhs_pipe_contains_transmittable_data(struct usbhs_pipe *pipe)
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{
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u16 val;
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/* Do not support for DCP pipe */
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if (usbhs_pipe_is_dcp(pipe))
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return false;
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val = usbhsp_pipectrl_get(pipe);
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if (val & INBUFM)
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return true;
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return false;
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}
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/*
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* PID ctrl
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*/
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static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe)
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{
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u16 pid = usbhsp_pipectrl_get(pipe);
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pid &= PID_MASK;
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/*
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* see
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* "Pipe n Control Register" - "PID"
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*/
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switch (pid) {
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case PID_STALL11:
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usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10);
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/* fall-through */
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case PID_STALL10:
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usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK);
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}
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}
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void usbhs_pipe_disable(struct usbhs_pipe *pipe)
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{
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int timeout = 1024;
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u16 val;
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/* see "Pipe n Control Register" - "PID" */
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__usbhsp_pid_try_nak_if_stall(pipe);
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usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK);
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do {
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val = usbhsp_pipectrl_get(pipe);
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val &= PBUSY;
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if (!val)
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break;
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udelay(10);
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} while (timeout--);
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}
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void usbhs_pipe_enable(struct usbhs_pipe *pipe)
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{
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/* see "Pipe n Control Register" - "PID" */
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__usbhsp_pid_try_nak_if_stall(pipe);
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usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF);
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}
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void usbhs_pipe_stall(struct usbhs_pipe *pipe)
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{
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u16 pid = usbhsp_pipectrl_get(pipe);
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pid &= PID_MASK;
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/*
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* see
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* "Pipe n Control Register" - "PID"
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*/
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switch (pid) {
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case PID_NAK:
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usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10);
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break;
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case PID_BUF:
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usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11);
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break;
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}
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}
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int usbhs_pipe_is_stall(struct usbhs_pipe *pipe)
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{
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u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK;
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return (int)(pid == PID_STALL10 || pid == PID_STALL11);
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}
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void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len)
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{
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if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
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return;
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/*
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* clear and disable transfer counter for IN/OUT pipe
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*/
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usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR);
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/*
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* Only IN direction bulk pipe can use transfer count.
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* Without using this function,
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* received data will break if it was large data size.
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* see PIPEnTRN/PIPEnTRE for detail
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*/
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if (usbhs_pipe_is_dir_in(pipe)) {
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int maxp = usbhs_pipe_get_maxpacket(pipe);
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usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp));
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usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */
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}
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}
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/*
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* pipe setup
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*/
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static int usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, int is_host,
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int dir_in, u16 *pipecfg)
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{
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u16 type = 0;
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u16 bfre = 0;
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u16 dblb = 0;
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u16 cntmd = 0;
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u16 dir = 0;
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u16 epnum = 0;
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u16 shtnak = 0;
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static const u16 type_array[] = {
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[USB_ENDPOINT_XFER_BULK] = TYPE_BULK,
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[USB_ENDPOINT_XFER_INT] = TYPE_INT,
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[USB_ENDPOINT_XFER_ISOC] = TYPE_ISO,
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};
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if (usbhs_pipe_is_dcp(pipe))
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return -EINVAL;
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/*
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* PIPECFG
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*
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* see
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* - "Register Descriptions" - "PIPECFG" register
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* - "Features" - "Pipe configuration"
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* - "Operation" - "Pipe Control"
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*/
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/* TYPE */
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type = type_array[usbhs_pipe_type(pipe)];
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/* BFRE */
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if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
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usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
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bfre = 0; /* FIXME */
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/* DBLB: see usbhs_pipe_config_update() */
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/* CNTMD */
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if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
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cntmd = 0; /* FIXME */
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/* DIR */
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if (dir_in)
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usbhsp_flags_set(pipe, IS_DIR_HOST);
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if (!!is_host ^ !!dir_in)
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dir |= DIR_OUT;
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if (!dir)
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usbhsp_flags_set(pipe, IS_DIR_IN);
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/* SHTNAK */
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if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) &&
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!dir)
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shtnak = SHTNAK;
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/* EPNUM */
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epnum = 0; /* see usbhs_pipe_config_update() */
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*pipecfg = type |
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bfre |
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dblb |
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cntmd |
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dir |
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shtnak |
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epnum;
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return 0;
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}
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static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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struct device *dev = usbhs_priv_to_dev(priv);
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int pipe_num = usbhs_pipe_number(pipe);
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u16 buff_size;
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u16 bufnmb;
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u16 bufnmb_cnt;
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struct renesas_usbhs_driver_pipe_config *pipe_config =
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usbhsp_get_pipe_config(priv, pipe_num);
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/*
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* PIPEBUF
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*
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* see
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* - "Register Descriptions" - "PIPEBUF" register
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* - "Features" - "Pipe configuration"
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* - "Operation" - "FIFO Buffer Memory"
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* - "Operation" - "Pipe Control"
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*/
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buff_size = pipe_config->bufsize;
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bufnmb = pipe_config->bufnum;
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/* change buff_size to register value */
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bufnmb_cnt = (buff_size / 64) - 1;
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dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n",
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pipe_num, buff_size, bufnmb);
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return (0x1f & bufnmb_cnt) << 10 |
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(0xff & bufnmb) << 0;
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}
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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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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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int pipe_num = usbhs_pipe_number(pipe);
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struct renesas_usbhs_driver_pipe_config *pipe_config =
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usbhsp_get_pipe_config(priv, pipe_num);
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u16 dblb = pipe_config->double_buf ? DBLB : 0;
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if (devsel > 0xA) {
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struct device *dev = usbhs_priv_to_dev(priv);
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dev_err(dev, "devsel error %d\n", devsel);
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devsel = 0;
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}
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usbhsp_pipe_barrier(pipe);
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pipe->maxp = maxp;
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usbhsp_pipe_select(pipe);
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usbhsp_pipe_maxp_set(pipe, 0xFFFF,
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(devsel << 12) |
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maxp);
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|
|
|
if (!usbhs_pipe_is_dcp(pipe))
|
|
usbhsp_pipe_cfg_set(pipe, 0x000F | DBLB, epnum | dblb);
|
|
}
|
|
|
|
/*
|
|
* pipe control
|
|
*/
|
|
int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe)
|
|
{
|
|
/*
|
|
* see
|
|
* usbhs_pipe_config_update()
|
|
* usbhs_dcp_malloc()
|
|
*/
|
|
return pipe->maxp;
|
|
}
|
|
|
|
int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe)
|
|
{
|
|
return usbhsp_flags_has(pipe, IS_DIR_IN);
|
|
}
|
|
|
|
int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe)
|
|
{
|
|
return usbhsp_flags_has(pipe, IS_DIR_HOST);
|
|
}
|
|
|
|
int usbhs_pipe_is_running(struct usbhs_pipe *pipe)
|
|
{
|
|
return usbhsp_flags_has(pipe, IS_RUNNING);
|
|
}
|
|
|
|
void usbhs_pipe_running(struct usbhs_pipe *pipe, int running)
|
|
{
|
|
if (running)
|
|
usbhsp_flags_set(pipe, IS_RUNNING);
|
|
else
|
|
usbhsp_flags_clr(pipe, IS_RUNNING);
|
|
}
|
|
|
|
void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence)
|
|
{
|
|
u16 mask = (SQCLR | SQSET);
|
|
u16 val;
|
|
|
|
/*
|
|
* sequence
|
|
* 0 : data0
|
|
* 1 : data1
|
|
* -1 : no change
|
|
*/
|
|
switch (sequence) {
|
|
case 0:
|
|
val = SQCLR;
|
|
break;
|
|
case 1:
|
|
val = SQSET;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
usbhsp_pipectrl_set(pipe, mask, val);
|
|
}
|
|
|
|
static int usbhs_pipe_get_data_sequence(struct usbhs_pipe *pipe)
|
|
{
|
|
return !!(usbhsp_pipectrl_get(pipe) & SQMON);
|
|
}
|
|
|
|
void usbhs_pipe_clear(struct usbhs_pipe *pipe)
|
|
{
|
|
if (usbhs_pipe_is_dcp(pipe)) {
|
|
usbhs_fifo_clear_dcp(pipe);
|
|
} else {
|
|
usbhsp_pipectrl_set(pipe, ACLRM, ACLRM);
|
|
usbhsp_pipectrl_set(pipe, ACLRM, 0);
|
|
}
|
|
}
|
|
|
|
/* Should call usbhsp_pipe_select() before */
|
|
void usbhs_pipe_clear_without_sequence(struct usbhs_pipe *pipe,
|
|
int needs_bfre, int bfre_enable)
|
|
{
|
|
int sequence;
|
|
|
|
usbhsp_pipe_select(pipe);
|
|
sequence = usbhs_pipe_get_data_sequence(pipe);
|
|
if (needs_bfre)
|
|
usbhsp_pipe_cfg_set(pipe, BFRE, bfre_enable ? BFRE : 0);
|
|
usbhs_pipe_clear(pipe);
|
|
usbhs_pipe_data_sequence(pipe, sequence);
|
|
}
|
|
|
|
void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable)
|
|
{
|
|
if (usbhs_pipe_is_dcp(pipe))
|
|
return;
|
|
|
|
usbhsp_pipe_select(pipe);
|
|
/* check if the driver needs to change the BFRE value */
|
|
if (!(enable ^ !!(usbhsp_pipe_cfg_get(pipe) & BFRE)))
|
|
return;
|
|
|
|
usbhs_pipe_clear_without_sequence(pipe, 1, enable);
|
|
}
|
|
|
|
static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
|
|
{
|
|
struct usbhs_pipe *pos, *pipe;
|
|
int i;
|
|
|
|
/*
|
|
* find target pipe
|
|
*/
|
|
pipe = NULL;
|
|
usbhs_for_each_pipe_with_dcp(pos, priv, i) {
|
|
if (!usbhs_pipe_type_is(pos, type))
|
|
continue;
|
|
if (usbhsp_flags_has(pos, IS_USED))
|
|
continue;
|
|
|
|
pipe = pos;
|
|
break;
|
|
}
|
|
|
|
if (!pipe)
|
|
return NULL;
|
|
|
|
/*
|
|
* initialize pipe flags
|
|
*/
|
|
usbhsp_flags_init(pipe);
|
|
usbhsp_flags_set(pipe, IS_USED);
|
|
|
|
return pipe;
|
|
}
|
|
|
|
static void usbhsp_put_pipe(struct usbhs_pipe *pipe)
|
|
{
|
|
usbhsp_flags_init(pipe);
|
|
}
|
|
|
|
void usbhs_pipe_init(struct usbhs_priv *priv,
|
|
int (*dma_map_ctrl)(struct device *dma_dev,
|
|
struct usbhs_pkt *pkt, int map))
|
|
{
|
|
struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
|
|
struct usbhs_pipe *pipe;
|
|
int i;
|
|
|
|
usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
|
|
usbhsp_flags_init(pipe);
|
|
pipe->fifo = NULL;
|
|
pipe->mod_private = NULL;
|
|
INIT_LIST_HEAD(&pipe->list);
|
|
|
|
/* pipe force init */
|
|
usbhs_pipe_clear(pipe);
|
|
}
|
|
|
|
info->dma_map_ctrl = dma_map_ctrl;
|
|
}
|
|
|
|
struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
|
|
int endpoint_type,
|
|
int dir_in)
|
|
{
|
|
struct device *dev = usbhs_priv_to_dev(priv);
|
|
struct usbhs_pipe *pipe;
|
|
int is_host = usbhs_mod_is_host(priv);
|
|
int ret;
|
|
u16 pipecfg, pipebuf;
|
|
|
|
pipe = usbhsp_get_pipe(priv, endpoint_type);
|
|
if (!pipe) {
|
|
dev_err(dev, "can't get pipe (%s)\n",
|
|
usbhsp_pipe_name[endpoint_type]);
|
|
return NULL;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&pipe->list);
|
|
|
|
usbhs_pipe_disable(pipe);
|
|
|
|
/* make sure pipe is not busy */
|
|
ret = usbhsp_pipe_barrier(pipe);
|
|
if (ret < 0) {
|
|
dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe));
|
|
return NULL;
|
|
}
|
|
|
|
if (usbhsp_setup_pipecfg(pipe, is_host, dir_in, &pipecfg)) {
|
|
dev_err(dev, "can't setup pipe\n");
|
|
return NULL;
|
|
}
|
|
|
|
pipebuf = usbhsp_setup_pipebuff(pipe);
|
|
|
|
usbhsp_pipe_select(pipe);
|
|
usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg);
|
|
usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf);
|
|
usbhs_pipe_clear(pipe);
|
|
|
|
usbhs_pipe_sequence_data0(pipe);
|
|
|
|
dev_dbg(dev, "enable pipe %d : %s (%s)\n",
|
|
usbhs_pipe_number(pipe),
|
|
usbhs_pipe_name(pipe),
|
|
usbhs_pipe_is_dir_in(pipe) ? "in" : "out");
|
|
|
|
/*
|
|
* epnum / maxp are still not set to this pipe.
|
|
* call usbhs_pipe_config_update() after this function !!
|
|
*/
|
|
|
|
return pipe;
|
|
}
|
|
|
|
void usbhs_pipe_free(struct usbhs_pipe *pipe)
|
|
{
|
|
usbhsp_put_pipe(pipe);
|
|
}
|
|
|
|
void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo)
|
|
{
|
|
if (pipe->fifo)
|
|
pipe->fifo->pipe = NULL;
|
|
|
|
pipe->fifo = fifo;
|
|
|
|
if (fifo)
|
|
fifo->pipe = pipe;
|
|
}
|
|
|
|
|
|
/*
|
|
* dcp control
|
|
*/
|
|
struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv)
|
|
{
|
|
struct usbhs_pipe *pipe;
|
|
|
|
pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL);
|
|
if (!pipe)
|
|
return NULL;
|
|
|
|
INIT_LIST_HEAD(&pipe->list);
|
|
|
|
/*
|
|
* call usbhs_pipe_config_update() after this function !!
|
|
*/
|
|
|
|
return pipe;
|
|
}
|
|
|
|
void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe)
|
|
{
|
|
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
|
|
|
|
WARN_ON(!usbhs_pipe_is_dcp(pipe));
|
|
|
|
usbhs_pipe_enable(pipe);
|
|
|
|
if (!usbhs_mod_is_host(priv)) /* funconly */
|
|
usbhsp_pipectrl_set(pipe, CCPL, CCPL);
|
|
}
|
|
|
|
void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out)
|
|
{
|
|
usbhsp_pipe_cfg_set(pipe, DIR_OUT,
|
|
dir_out ? DIR_OUT : 0);
|
|
}
|
|
|
|
/*
|
|
* pipe module function
|
|
*/
|
|
int usbhs_pipe_probe(struct usbhs_priv *priv)
|
|
{
|
|
struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
|
|
struct usbhs_pipe *pipe;
|
|
struct device *dev = usbhs_priv_to_dev(priv);
|
|
struct renesas_usbhs_driver_pipe_config *pipe_configs =
|
|
usbhs_get_dparam(priv, pipe_configs);
|
|
int pipe_size = usbhs_get_dparam(priv, pipe_size);
|
|
int i;
|
|
|
|
/* This driver expects 1st pipe is DCP */
|
|
if (pipe_configs[0].type != USB_ENDPOINT_XFER_CONTROL) {
|
|
dev_err(dev, "1st PIPE is not DCP\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
info->pipe = kcalloc(pipe_size, sizeof(struct usbhs_pipe),
|
|
GFP_KERNEL);
|
|
if (!info->pipe)
|
|
return -ENOMEM;
|
|
|
|
info->size = pipe_size;
|
|
|
|
/*
|
|
* init pipe
|
|
*/
|
|
usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
|
|
pipe->priv = priv;
|
|
|
|
usbhs_pipe_type(pipe) =
|
|
pipe_configs[i].type & USB_ENDPOINT_XFERTYPE_MASK;
|
|
|
|
dev_dbg(dev, "pipe %x\t: %s\n",
|
|
i, usbhsp_pipe_name[pipe_configs[i].type]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void usbhs_pipe_remove(struct usbhs_priv *priv)
|
|
{
|
|
struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
|
|
|
|
kfree(info->pipe);
|
|
}
|