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Ole André Vadla Ravnås 2022-05-07 01:01:45 +02:00
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15
drivers/usb/renesas_usbhs/Kconfig Normal file
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#
# Renesas USBHS Controller Drivers
#
config USB_RENESAS_USBHS
tristate 'Renesas USBHS controller'
depends on USB_GADGET && GENERIC_HARDIRQS
default n
help
Renesas USBHS is a discrete USB host and peripheral controller chip
that supports both full and high speed USB 2.0 data transfers.
It has nine or more configurable endpoints, and endpoint zero.
Say "y" to link the driver statically, or "m" to build a
dynamically linked module called "renesas_usbhs"

15
drivers/usb/renesas_usbhs/Makefile Normal file
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#
# for Renesas USB
#
obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs.o
renesas_usbhs-y := common.o mod.o pipe.o fifo.o
ifneq ($(CONFIG_USB_RENESAS_USBHS_HCD),)
renesas_usbhs-y += mod_host.o
endif
ifneq ($(CONFIG_USB_RENESAS_USBHS_UDC),)
renesas_usbhs-y += mod_gadget.o
endif

645
drivers/usb/renesas_usbhs/common.c Normal file
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/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include "common.h"
/*
* image of renesas_usbhs
*
* ex) gadget case
* mod.c
* mod_gadget.c
* mod_host.c pipe.c fifo.c
*
* +-------+ +-----------+
* | pipe0 |------>| fifo pio |
* +------------+ +-------+ +-----------+
* | mod_gadget |=====> | pipe1 |--+
* +------------+ +-------+ | +-----------+
* | pipe2 | | +-| fifo dma0 |
* +------------+ +-------+ | | +-----------+
* | mod_host | | pipe3 |<-|--+
* +------------+ +-------+ | +-----------+
* | .... | +--->| fifo dma1 |
* | .... | +-----------+
*/
#define USBHSF_RUNTIME_PWCTRL (1 << 0)
/* status */
#define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0)
#define usbhsc_flags_set(p, b) ((p)->flags |= (b))
#define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b))
#define usbhsc_flags_has(p, b) ((p)->flags & (b))
/*
* platform call back
*
* renesas usb support platform callback function.
* Below macro call it.
* if platform doesn't have callback, it return 0 (no error)
*/
#define usbhs_platform_call(priv, func, args...)\
(!(priv) ? -ENODEV : \
!((priv)->pfunc.func) ? 0 : \
(priv)->pfunc.func(args))
/*
* common functions
*/
u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
{
return ioread16(priv->base + reg);
}
void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
{
iowrite16(data, priv->base + reg);
}
void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
{
u16 val = usbhs_read(priv, reg);
val &= ~mask;
val |= data & mask;
usbhs_write(priv, reg, val);
}
struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev)
{
return dev_get_drvdata(&pdev->dev);
}
/*
* syscfg functions
*/
static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
{
usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
}
void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
{
u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
u16 val = DCFM | DRPD | HSE | USBE;
int has_otg = usbhs_get_dparam(priv, has_otg);
if (has_otg)
usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN));
/*
* if enable
*
* - select Host mode
* - D+ Line/D- Line Pull-down
*/
usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
}
void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
{
u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
u16 val = DPRPU | HSE | USBE;
/*
* if enable
*
* - select Function mode
* - D+ Line Pull-up
*/
usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
}
void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable)
{
usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0);
}
void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode)
{
usbhs_write(priv, TESTMODE, mode);
}
/*
* frame functions
*/
int usbhs_frame_get_num(struct usbhs_priv *priv)
{
return usbhs_read(priv, FRMNUM) & FRNM_MASK;
}
/*
* usb request functions
*/
void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
{
u16 val;
val = usbhs_read(priv, USBREQ);
req->bRequest = (val >> 8) & 0xFF;
req->bRequestType = (val >> 0) & 0xFF;
req->wValue = usbhs_read(priv, USBVAL);
req->wIndex = usbhs_read(priv, USBINDX);
req->wLength = usbhs_read(priv, USBLENG);
}
void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
{
usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType);
usbhs_write(priv, USBVAL, req->wValue);
usbhs_write(priv, USBINDX, req->wIndex);
usbhs_write(priv, USBLENG, req->wLength);
usbhs_bset(priv, DCPCTR, SUREQ, SUREQ);
}
/*
* bus/vbus functions
*/
void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
{
u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT);
if (status != USBRST) {
struct device *dev = usbhs_priv_to_dev(priv);
dev_err(dev, "usbhs should be reset\n");
}
usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT);
}
void usbhs_bus_send_reset(struct usbhs_priv *priv)
{
usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
}
int usbhs_bus_get_speed(struct usbhs_priv *priv)
{
u16 dvstctr = usbhs_read(priv, DVSTCTR);
switch (RHST & dvstctr) {
case RHST_LOW_SPEED:
return USB_SPEED_LOW;
case RHST_FULL_SPEED:
return USB_SPEED_FULL;
case RHST_HIGH_SPEED:
return USB_SPEED_HIGH;
}
return USB_SPEED_UNKNOWN;
}
int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
{
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
return usbhs_platform_call(priv, set_vbus, pdev, enable);
}
static void usbhsc_bus_init(struct usbhs_priv *priv)
{
usbhs_write(priv, DVSTCTR, 0);
usbhs_vbus_ctrl(priv, 0);
}
/*
* device configuration
*/
int usbhs_set_device_config(struct usbhs_priv *priv, int devnum,
u16 upphub, u16 hubport, u16 speed)
{
struct device *dev = usbhs_priv_to_dev(priv);
u16 usbspd = 0;
u32 reg = DEVADD0 + (2 * devnum);
if (devnum > 10) {
dev_err(dev, "cannot set speed to unknown device %d\n", devnum);
return -EIO;
}
if (upphub > 0xA) {
dev_err(dev, "unsupported hub number %d\n", upphub);
return -EIO;
}
switch (speed) {
case USB_SPEED_LOW:
usbspd = USBSPD_SPEED_LOW;
break;
case USB_SPEED_FULL:
usbspd = USBSPD_SPEED_FULL;
break;
case USB_SPEED_HIGH:
usbspd = USBSPD_SPEED_HIGH;
break;
default:
dev_err(dev, "unsupported speed %d\n", speed);
return -EIO;
}
usbhs_write(priv, reg, UPPHUB(upphub) |
HUBPORT(hubport)|
USBSPD(usbspd));
return 0;
}
/*
* local functions
*/
static void usbhsc_set_buswait(struct usbhs_priv *priv)
{
int wait = usbhs_get_dparam(priv, buswait_bwait);
/* set bus wait if platform have */
if (wait)
usbhs_bset(priv, BUSWAIT, 0x000F, wait);
}
/*
* platform default param
*/
static u32 usbhsc_default_pipe_type[] = {
USB_ENDPOINT_XFER_CONTROL,
USB_ENDPOINT_XFER_ISOC,
USB_ENDPOINT_XFER_ISOC,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_INT,
USB_ENDPOINT_XFER_INT,
USB_ENDPOINT_XFER_INT,
USB_ENDPOINT_XFER_INT,
};
/*
* power control
*/
static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
{
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
struct device *dev = usbhs_priv_to_dev(priv);
if (enable) {
/* enable PM */
pm_runtime_get_sync(dev);
/* enable platform power */
usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
/* USB on */
usbhs_sys_clock_ctrl(priv, enable);
} else {
/* USB off */
usbhs_sys_clock_ctrl(priv, enable);
/* disable platform power */
usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
/* disable PM */
pm_runtime_put_sync(dev);
}
}
/*
* hotplug
*/
static void usbhsc_hotplug(struct usbhs_priv *priv)
{
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
int id;
int enable;
int ret;
/*
* get vbus status from platform
*/
enable = usbhs_platform_call(priv, get_vbus, pdev);
/*
* get id from platform
*/
id = usbhs_platform_call(priv, get_id, pdev);
if (enable && !mod) {
ret = usbhs_mod_change(priv, id);
if (ret < 0)
return;
dev_dbg(&pdev->dev, "%s enable\n", __func__);
/* power on */
if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
usbhsc_power_ctrl(priv, enable);
/* bus init */
usbhsc_set_buswait(priv);
usbhsc_bus_init(priv);
/* module start */
usbhs_mod_call(priv, start, priv);
} else if (!enable && mod) {
dev_dbg(&pdev->dev, "%s disable\n", __func__);
/* module stop */
usbhs_mod_call(priv, stop, priv);
/* bus init */
usbhsc_bus_init(priv);
/* power off */
if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
usbhsc_power_ctrl(priv, enable);
usbhs_mod_change(priv, -1);
/* reset phy for next connection */
usbhs_platform_call(priv, phy_reset, pdev);
}
}
/*
* notify hotplug
*/
static void usbhsc_notify_hotplug(struct work_struct *work)
{
struct usbhs_priv *priv = container_of(work,
struct usbhs_priv,
notify_hotplug_work.work);
usbhsc_hotplug(priv);
}
static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
{
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
int delay = usbhs_get_dparam(priv, detection_delay);
/*
* This functions will be called in interrupt.
* To make sure safety context,
* use workqueue for usbhs_notify_hotplug
*/
schedule_delayed_work(&priv->notify_hotplug_work,
msecs_to_jiffies(delay));
return 0;
}
/*
* platform functions
*/
static int usbhs_probe(struct platform_device *pdev)
{
struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
struct renesas_usbhs_driver_callback *dfunc;
struct usbhs_priv *priv;
struct resource *res, *irq_res;
int ret;
/* check platform information */
if (!info ||
!info->platform_callback.get_id) {
dev_err(&pdev->dev, "no platform information\n");
return -EINVAL;
}
/* platform data */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res || !irq_res) {
dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
return -ENODEV;
}
/* usb private data */
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(&pdev->dev, "Could not allocate priv\n");
return -ENOMEM;
}
priv->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
/*
* care platform info
*/
memcpy(&priv->pfunc,
&info->platform_callback,
sizeof(struct renesas_usbhs_platform_callback));
memcpy(&priv->dparam,
&info->driver_param,
sizeof(struct renesas_usbhs_driver_param));
/* set driver callback functions for platform */
dfunc = &info->driver_callback;
dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
/* set default param if platform doesn't have */
if (!priv->dparam.pipe_type) {
priv->dparam.pipe_type = usbhsc_default_pipe_type;
priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
}
if (!priv->dparam.pio_dma_border)
priv->dparam.pio_dma_border = 64; /* 64byte */
/* FIXME */
/* runtime power control ? */
if (priv->pfunc.get_vbus)
usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
/*
* priv settings
*/
priv->irq = irq_res->start;
if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE)
priv->irqflags = IRQF_SHARED;
priv->pdev = pdev;
INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
spin_lock_init(usbhs_priv_to_lock(priv));
/* call pipe and module init */
ret = usbhs_pipe_probe(priv);
if (ret < 0)
return ret;
ret = usbhs_fifo_probe(priv);
if (ret < 0)
goto probe_end_pipe_exit;
ret = usbhs_mod_probe(priv);
if (ret < 0)
goto probe_end_fifo_exit;
/* dev_set_drvdata should be called after usbhs_mod_init */
dev_set_drvdata(&pdev->dev, priv);
/*
* deviece reset here because
* USB device might be used in boot loader.
*/
usbhs_sys_clock_ctrl(priv, 0);
/*
* platform call
*
* USB phy setup might depend on CPU/Board.
* If platform has its callback functions,
* call it here.
*/
ret = usbhs_platform_call(priv, hardware_init, pdev);
if (ret < 0) {
dev_err(&pdev->dev, "platform prove failed.\n");
goto probe_end_mod_exit;
}
/* reset phy for connection */
usbhs_platform_call(priv, phy_reset, pdev);
/* power control */
pm_runtime_enable(&pdev->dev);
if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
usbhsc_power_ctrl(priv, 1);
usbhs_mod_autonomy_mode(priv);
}
/*
* manual call notify_hotplug for cold plug
*/
ret = usbhsc_drvcllbck_notify_hotplug(pdev);
if (ret < 0)
goto probe_end_call_remove;
dev_info(&pdev->dev, "probed\n");
return ret;
probe_end_call_remove:
usbhs_platform_call(priv, hardware_exit, pdev);
probe_end_mod_exit:
usbhs_mod_remove(priv);
probe_end_fifo_exit:
usbhs_fifo_remove(priv);
probe_end_pipe_exit:
usbhs_pipe_remove(priv);
dev_info(&pdev->dev, "probe failed\n");
return ret;
}
static int usbhs_remove(struct platform_device *pdev)
{
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
dev_dbg(&pdev->dev, "usb remove\n");
dfunc->notify_hotplug = NULL;
/* power off */
if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
usbhsc_power_ctrl(priv, 0);
pm_runtime_disable(&pdev->dev);
usbhs_platform_call(priv, hardware_exit, pdev);
usbhs_mod_remove(priv);
usbhs_fifo_remove(priv);
usbhs_pipe_remove(priv);
return 0;
}
static int usbhsc_suspend(struct device *dev)
{
struct usbhs_priv *priv = dev_get_drvdata(dev);
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
if (mod) {
usbhs_mod_call(priv, stop, priv);
usbhs_mod_change(priv, -1);
}
if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
usbhsc_power_ctrl(priv, 0);
return 0;
}
static int usbhsc_resume(struct device *dev)
{
struct usbhs_priv *priv = dev_get_drvdata(dev);
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
usbhsc_power_ctrl(priv, 1);
usbhs_platform_call(priv, phy_reset, pdev);
usbhsc_drvcllbck_notify_hotplug(pdev);
return 0;
}
static int usbhsc_runtime_nop(struct device *dev)
{
/* Runtime PM callback shared between ->runtime_suspend()
* and ->runtime_resume(). Simply returns success.
*
* This driver re-initializes all registers after
* pm_runtime_get_sync() anyway so there is no need
* to save and restore registers here.
*/
return 0;
}
static const struct dev_pm_ops usbhsc_pm_ops = {
.suspend = usbhsc_suspend,
.resume = usbhsc_resume,
.runtime_suspend = usbhsc_runtime_nop,
.runtime_resume = usbhsc_runtime_nop,
};
static struct platform_driver renesas_usbhs_driver = {
.driver = {
.name = "renesas_usbhs",
.pm = &usbhsc_pm_ops,
},
.probe = usbhs_probe,
.remove = usbhs_remove,
};
module_platform_driver(renesas_usbhs_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Renesas USB driver");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");

325
drivers/usb/renesas_usbhs/common.h Normal file
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/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef RENESAS_USB_DRIVER_H
#define RENESAS_USB_DRIVER_H
#include <linux/platform_device.h>
#include <linux/usb/renesas_usbhs.h>
struct usbhs_priv;
#include "mod.h"
#include "pipe.h"
/*
*
* register define
*
*/
#define SYSCFG 0x0000
#define BUSWAIT 0x0002
#define DVSTCTR 0x0008
#define TESTMODE 0x000C
#define CFIFO 0x0014
#define CFIFOSEL 0x0020
#define CFIFOCTR 0x0022
#define D0FIFO 0x0100
#define D0FIFOSEL 0x0028
#define D0FIFOCTR 0x002A
#define D1FIFO 0x0120
#define D1FIFOSEL 0x002C
#define D1FIFOCTR 0x002E
#define INTENB0 0x0030
#define INTENB1 0x0032
#define BRDYENB 0x0036
#define NRDYENB 0x0038
#define BEMPENB 0x003A
#define INTSTS0 0x0040
#define INTSTS1 0x0042
#define BRDYSTS 0x0046
#define NRDYSTS 0x0048
#define BEMPSTS 0x004A
#define FRMNUM 0x004C
#define USBREQ 0x0054 /* USB request type register */
#define USBVAL 0x0056 /* USB request value register */
#define USBINDX 0x0058 /* USB request index register */
#define USBLENG 0x005A /* USB request length register */
#define DCPCFG 0x005C
#define DCPMAXP 0x005E
#define DCPCTR 0x0060
#define PIPESEL 0x0064
#define PIPECFG 0x0068
#define PIPEBUF 0x006A
#define PIPEMAXP 0x006C
#define PIPEPERI 0x006E
#define PIPEnCTR 0x0070
#define PIPE1TRE 0x0090
#define PIPE1TRN 0x0092
#define PIPE2TRE 0x0094
#define PIPE2TRN 0x0096
#define PIPE3TRE 0x0098
#define PIPE3TRN 0x009A
#define PIPE4TRE 0x009C
#define PIPE4TRN 0x009E
#define PIPE5TRE 0x00A0
#define PIPE5TRN 0x00A2
#define PIPEBTRE 0x00A4
#define PIPEBTRN 0x00A6
#define PIPECTRE 0x00A8
#define PIPECTRN 0x00AA
#define PIPEDTRE 0x00AC
#define PIPEDTRN 0x00AE
#define PIPEETRE 0x00B0
#define PIPEETRN 0x00B2
#define PIPEFTRE 0x00B4
#define PIPEFTRN 0x00B6
#define PIPE9TRE 0x00B8
#define PIPE9TRN 0x00BA
#define PIPEATRE 0x00BC
#define PIPEATRN 0x00BE
#define DEVADD0 0x00D0 /* Device address n configuration */
#define DEVADD1 0x00D2
#define DEVADD2 0x00D4
#define DEVADD3 0x00D6
#define DEVADD4 0x00D8
#define DEVADD5 0x00DA
#define DEVADD6 0x00DC
#define DEVADD7 0x00DE
#define DEVADD8 0x00E0
#define DEVADD9 0x00E2
#define DEVADDA 0x00E4
/* SYSCFG */
#define SCKE (1 << 10) /* USB Module Clock Enable */
#define HSE (1 << 7) /* High-Speed Operation Enable */
#define DCFM (1 << 6) /* Controller Function Select */
#define DRPD (1 << 5) /* D+ Line/D- Line Resistance Control */
#define DPRPU (1 << 4) /* D+ Line Resistance Control */
#define USBE (1 << 0) /* USB Module Operation Enable */
/* DVSTCTR */
#define EXTLP (1 << 10) /* Controls the EXTLP pin output state */
#define PWEN (1 << 9) /* Controls the PWEN pin output state */
#define USBRST (1 << 6) /* Bus Reset Output */
#define UACT (1 << 4) /* USB Bus Enable */
#define RHST (0x7) /* Reset Handshake */
#define RHST_LOW_SPEED 1 /* Low-speed connection */
#define RHST_FULL_SPEED 2 /* Full-speed connection */
#define RHST_HIGH_SPEED 3 /* High-speed connection */
/* CFIFOSEL */
#define DREQE (1 << 12) /* DMA Transfer Request Enable */
#define MBW_32 (0x2 << 10) /* CFIFO Port Access Bit Width */
/* CFIFOCTR */
#define BVAL (1 << 15) /* Buffer Memory Enable Flag */
#define BCLR (1 << 14) /* CPU buffer clear */
#define FRDY (1 << 13) /* FIFO Port Ready */
#define DTLN_MASK (0x0FFF) /* Receive Data Length */
/* INTENB0 */
#define VBSE (1 << 15) /* Enable IRQ VBUS_0 and VBUSIN_0 */
#define RSME (1 << 14) /* Enable IRQ Resume */
#define SOFE (1 << 13) /* Enable IRQ Frame Number Update */
#define DVSE (1 << 12) /* Enable IRQ Device State Transition */
#define CTRE (1 << 11) /* Enable IRQ Control Stage Transition */
#define BEMPE (1 << 10) /* Enable IRQ Buffer Empty */
#define NRDYE (1 << 9) /* Enable IRQ Buffer Not Ready Response */
#define BRDYE (1 << 8) /* Enable IRQ Buffer Ready */
/* INTENB1 */
#define BCHGE (1 << 14) /* USB Bus Change Interrupt Enable */
#define DTCHE (1 << 12) /* Disconnection Detect Interrupt Enable */
#define ATTCHE (1 << 11) /* Connection Detect Interrupt Enable */
#define EOFERRE (1 << 6) /* EOF Error Detect Interrupt Enable */
#define SIGNE (1 << 5) /* Setup Transaction Error Interrupt Enable */
#define SACKE (1 << 4) /* Setup Transaction ACK Interrupt Enable */
/* INTSTS0 */
#define VBINT (1 << 15) /* VBUS0_0 and VBUS1_0 Interrupt Status */
#define DVST (1 << 12) /* Device State Transition Interrupt Status */
#define CTRT (1 << 11) /* Control Stage Interrupt Status */
#define BEMP (1 << 10) /* Buffer Empty Interrupt Status */
#define BRDY (1 << 8) /* Buffer Ready Interrupt Status */
#define VBSTS (1 << 7) /* VBUS_0 and VBUSIN_0 Input Status */
#define VALID (1 << 3) /* USB Request Receive */
#define DVSQ_MASK (0x3 << 4) /* Device State */
#define POWER_STATE (0 << 4)
#define DEFAULT_STATE (1 << 4)
#define ADDRESS_STATE (2 << 4)
#define CONFIGURATION_STATE (3 << 4)
#define CTSQ_MASK (0x7) /* Control Transfer Stage */
#define IDLE_SETUP_STAGE 0 /* Idle stage or setup stage */
#define READ_DATA_STAGE 1 /* Control read data stage */
#define READ_STATUS_STAGE 2 /* Control read status stage */
#define WRITE_DATA_STAGE 3 /* Control write data stage */
#define WRITE_STATUS_STAGE 4 /* Control write status stage */
#define NODATA_STATUS_STAGE 5 /* Control write NoData status stage */
#define SEQUENCE_ERROR 6 /* Control transfer sequence error */
/* INTSTS1 */
#define OVRCR (1 << 15) /* OVRCR Interrupt Status */
#define BCHG (1 << 14) /* USB Bus Change Interrupt Status */
#define DTCH (1 << 12) /* USB Disconnection Detect Interrupt Status */
#define ATTCH (1 << 11) /* ATTCH Interrupt Status */
#define EOFERR (1 << 6) /* EOF Error Detect Interrupt Status */
#define SIGN (1 << 5) /* Setup Transaction Error Interrupt Status */
#define SACK (1 << 4) /* Setup Transaction ACK Response Interrupt Status */
/* PIPECFG */
/* DCPCFG */
#define TYPE_NONE (0 << 14) /* Transfer Type */
#define TYPE_BULK (1 << 14)
#define TYPE_INT (2 << 14)
#define TYPE_ISO (3 << 14)
#define DBLB (1 << 9) /* Double Buffer Mode */
#define SHTNAK (1 << 7) /* Pipe Disable in Transfer End */
#define DIR_OUT (1 << 4) /* Transfer Direction */
/* PIPEMAXP */
/* DCPMAXP */
#define DEVSEL_MASK (0xF << 12) /* Device Select */
#define DCP_MAXP_MASK (0x7F)
#define PIPE_MAXP_MASK (0x7FF)
/* PIPEBUF */
#define BUFSIZE_SHIFT 10
#define BUFSIZE_MASK (0x1F << BUFSIZE_SHIFT)
#define BUFNMB_MASK (0xFF)
/* PIPEnCTR */
/* DCPCTR */
#define BSTS (1 << 15) /* Buffer Status */
#define SUREQ (1 << 14) /* Sending SETUP Token */
#define CSSTS (1 << 12) /* CSSTS Status */
#define ACLRM (1 << 9) /* Buffer Auto-Clear Mode */
#define SQCLR (1 << 8) /* Toggle Bit Clear */
#define SQSET (1 << 7) /* Toggle Bit Set */
#define PBUSY (1 << 5) /* Pipe Busy */
#define PID_MASK (0x3) /* Response PID */
#define PID_NAK 0
#define PID_BUF 1
#define PID_STALL10 2
#define PID_STALL11 3
#define CCPL (1 << 2) /* Control Transfer End Enable */
/* PIPEnTRE */
#define TRENB (1 << 9) /* Transaction Counter Enable */
#define TRCLR (1 << 8) /* Transaction Counter Clear */
/* FRMNUM */
#define FRNM_MASK (0x7FF)
/* DEVADDn */
#define UPPHUB(x) (((x) & 0xF) << 11) /* HUB Register */
#define HUBPORT(x) (((x) & 0x7) << 8) /* HUB Port for Target Device */
#define USBSPD(x) (((x) & 0x3) << 6) /* Device Transfer Rate */
#define USBSPD_SPEED_LOW 0x1
#define USBSPD_SPEED_FULL 0x2
#define USBSPD_SPEED_HIGH 0x3
/*
* struct
*/
struct usbhs_priv {
void __iomem *base;
unsigned int irq;
unsigned long irqflags;
struct renesas_usbhs_platform_callback pfunc;
struct renesas_usbhs_driver_param dparam;
struct delayed_work notify_hotplug_work;
struct platform_device *pdev;
spinlock_t lock;
u32 flags;
/*
* module control
*/
struct usbhs_mod_info mod_info;
/*
* pipe control
*/
struct usbhs_pipe_info pipe_info;
/*
* fifo control
*/
struct usbhs_fifo_info fifo_info;
};
/*
* common
*/
u16 usbhs_read(struct usbhs_priv *priv, u32 reg);
void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data);
void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data);
#define usbhs_lock(p, f) spin_lock_irqsave(usbhs_priv_to_lock(p), f)
#define usbhs_unlock(p, f) spin_unlock_irqrestore(usbhs_priv_to_lock(p), f)
/*
* sysconfig
*/
void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable);
void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable);
void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable);
void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode);
/*
* usb request
*/
void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req);
void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req);
/*
* bus
*/
void usbhs_bus_send_sof_enable(struct usbhs_priv *priv);
void usbhs_bus_send_reset(struct usbhs_priv *priv);
int usbhs_bus_get_speed(struct usbhs_priv *priv);
int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable);
/*
* frame
*/
int usbhs_frame_get_num(struct usbhs_priv *priv);
/*
* device config
*/
int usbhs_set_device_config(struct usbhs_priv *priv, int devnum, u16 upphub,
u16 hubport, u16 speed);
/*
* data
*/
struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev);
#define usbhs_get_dparam(priv, param) (priv->dparam.param)
#define usbhs_priv_to_pdev(priv) (priv->pdev)
#define usbhs_priv_to_dev(priv) (&priv->pdev->dev)
#define usbhs_priv_to_lock(priv) (&priv->lock)
#endif /* RENESAS_USB_DRIVER_H */

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drivers/usb/renesas_usbhs/fifo.c Normal file
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/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef RENESAS_USB_FIFO_H
#define RENESAS_USB_FIFO_H
#include <linux/interrupt.h>
#include <linux/sh_dma.h>
#include <linux/workqueue.h>
#include <asm/dma.h>
#include "pipe.h"
struct usbhs_fifo {
char *name;
u32 port; /* xFIFO */
u32 sel; /* xFIFOSEL */
u32 ctr; /* xFIFOCTR */
struct usbhs_pipe *pipe;
struct dma_chan *tx_chan;
struct dma_chan *rx_chan;
struct sh_dmae_slave tx_slave;
struct sh_dmae_slave rx_slave;
};
struct usbhs_fifo_info {
struct usbhs_fifo cfifo;
struct usbhs_fifo d0fifo;
struct usbhs_fifo d1fifo;
};
struct usbhs_pkt_handle;
struct usbhs_pkt {
struct list_head node;
struct usbhs_pipe *pipe;
struct usbhs_pkt_handle *handler;
void (*done)(struct usbhs_priv *priv,
struct usbhs_pkt *pkt);
struct work_struct work;
dma_addr_t dma;
void *buf;
int length;
int trans;
int actual;
int zero;
int sequence;
};
struct usbhs_pkt_handle {
int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
};
/*
* fifo
*/
int usbhs_fifo_probe(struct usbhs_priv *priv);
void usbhs_fifo_remove(struct usbhs_priv *priv);
void usbhs_fifo_init(struct usbhs_priv *priv);
void usbhs_fifo_quit(struct usbhs_priv *priv);
/*
* packet info
*/
extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
extern struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
extern struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
extern struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
extern struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
void usbhs_pkt_init(struct usbhs_pkt *pkt);
void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
void (*done)(struct usbhs_priv *priv,
struct usbhs_pkt *pkt),
void *buf, int len, int zero, int sequence);
struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
void usbhs_pkt_start(struct usbhs_pipe *pipe);
#endif /* RENESAS_USB_FIFO_H */

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/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/interrupt.h>
#include "common.h"
#include "mod.h"
#define usbhs_priv_to_modinfo(priv) (&priv->mod_info)
#define usbhs_mod_info_call(priv, func, param...) \
({ \
struct usbhs_mod_info *info; \
info = usbhs_priv_to_modinfo(priv); \
!info->func ? 0 : \
info->func(param); \
})
/*
* autonomy
*
* these functions are used if platform doesn't have external phy.
* -> there is no "notify_hotplug" callback from platform
* -> call "notify_hotplug" by itself
* -> use own interrupt to connect/disconnect
* -> it mean module clock is always ON
* ~~~~~~~~~~~~~~~~~~~~~~~~~
*/
static int usbhsm_autonomy_get_vbus(struct platform_device *pdev)
{
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
return VBSTS & usbhs_read(priv, INTSTS0);
}
static int usbhsm_autonomy_irq_vbus(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state)
{
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
renesas_usbhs_call_notify_hotplug(pdev);
return 0;
}
void usbhs_mod_autonomy_mode(struct usbhs_priv *priv)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
info->irq_vbus = usbhsm_autonomy_irq_vbus;
priv->pfunc.get_vbus = usbhsm_autonomy_get_vbus;
usbhs_irq_callback_update(priv, NULL);
}
/*
* host / gadget functions
*
* renesas_usbhs host/gadget can register itself by below functions.
* these functions are called when probe
*
*/
void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *mod, int id)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
info->mod[id] = mod;
mod->priv = priv;
}
struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
struct usbhs_mod *ret = NULL;
switch (id) {
case USBHS_HOST:
case USBHS_GADGET:
ret = info->mod[id];
break;
}
return ret;
}
int usbhs_mod_is_host(struct usbhs_priv *priv)
{
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
if (!mod)
return -EINVAL;
return info->mod[USBHS_HOST] == mod;
}
struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
return info->curt;
}
int usbhs_mod_change(struct usbhs_priv *priv, int id)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
struct usbhs_mod *mod = NULL;
int ret = 0;
/* id < 0 mean no current */
switch (id) {
case USBHS_HOST:
case USBHS_GADGET:
mod = info->mod[id];
break;
default:
ret = -EINVAL;
}
info->curt = mod;
return ret;
}
static irqreturn_t usbhs_interrupt(int irq, void *data);
int usbhs_mod_probe(struct usbhs_priv *priv)
{
struct device *dev = usbhs_priv_to_dev(priv);
int ret;
/*
* install host/gadget driver
*/
ret = usbhs_mod_host_probe(priv);
if (ret < 0)
return ret;
ret = usbhs_mod_gadget_probe(priv);
if (ret < 0)
goto mod_init_host_err;
/* irq settings */
ret = devm_request_irq(dev, priv->irq, usbhs_interrupt,
priv->irqflags, dev_name(dev), priv);
if (ret) {
dev_err(dev, "irq request err\n");
goto mod_init_gadget_err;
}
return ret;
mod_init_gadget_err:
usbhs_mod_gadget_remove(priv);
mod_init_host_err:
usbhs_mod_host_remove(priv);
return ret;
}
void usbhs_mod_remove(struct usbhs_priv *priv)
{
usbhs_mod_host_remove(priv);
usbhs_mod_gadget_remove(priv);
}
/*
* status functions
*/
int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state)
{
int state = irq_state->intsts0 & DVSQ_MASK;
switch (state) {
case POWER_STATE:
case DEFAULT_STATE:
case ADDRESS_STATE:
case CONFIGURATION_STATE:
return state;
}
return -EIO;
}
int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state)
{
/*
* return value
*
* IDLE_SETUP_STAGE
* READ_DATA_STAGE
* READ_STATUS_STAGE
* WRITE_DATA_STAGE
* WRITE_STATUS_STAGE
* NODATA_STATUS_STAGE
* SEQUENCE_ERROR
*/
return (int)irq_state->intsts0 & CTSQ_MASK;
}
static int usbhs_status_get_each_irq(struct usbhs_priv *priv,
struct usbhs_irq_state *state)
{
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
u16 intenb0, intenb1;
state->intsts0 = usbhs_read(priv, INTSTS0);
state->intsts1 = usbhs_read(priv, INTSTS1);
intenb0 = usbhs_read(priv, INTENB0);
intenb1 = usbhs_read(priv, INTENB1);
/* mask */
if (mod) {
state->brdysts = usbhs_read(priv, BRDYSTS);
state->nrdysts = usbhs_read(priv, NRDYSTS);
state->bempsts = usbhs_read(priv, BEMPSTS);
state->bempsts &= mod->irq_bempsts;
state->brdysts &= mod->irq_brdysts;
}
/*
* Check whether the irq enable registers and the irq status are set
* when IRQF_SHARED is set.
*/
if (priv->irqflags & IRQF_SHARED) {
if (!(intenb0 & state->intsts0) &&
!(intenb1 & state->intsts1) &&
!(state->bempsts) &&
!(state->brdysts))
return -EIO;
}
return 0;
}
/*
* interrupt
*/
#define INTSTS0_MAGIC 0xF800 /* acknowledge magical interrupt sources */
#define INTSTS1_MAGIC 0xA870 /* acknowledge magical interrupt sources */
static irqreturn_t usbhs_interrupt(int irq, void *data)
{
struct usbhs_priv *priv = data;
struct usbhs_irq_state irq_state;
if (usbhs_status_get_each_irq(priv, &irq_state) < 0)
return IRQ_NONE;
/*
* clear interrupt
*
* The hardware is _very_ picky to clear interrupt bit.
* Especially INTSTS0_MAGIC, INTSTS1_MAGIC value.
*
* see
* "Operation"
* - "Control Transfer (DCP)"
* - Function :: VALID bit should 0
*/
usbhs_write(priv, INTSTS0, ~irq_state.intsts0 & INTSTS0_MAGIC);
usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC);
usbhs_write(priv, BRDYSTS, ~irq_state.brdysts);
usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts);
usbhs_write(priv, BEMPSTS, ~irq_state.bempsts);
/*
* call irq callback functions
* see also
* usbhs_irq_setting_update
*/
/* INTSTS0 */
if (irq_state.intsts0 & VBINT)
usbhs_mod_info_call(priv, irq_vbus, priv, &irq_state);
if (irq_state.intsts0 & DVST)
usbhs_mod_call(priv, irq_dev_state, priv, &irq_state);
if (irq_state.intsts0 & CTRT)
usbhs_mod_call(priv, irq_ctrl_stage, priv, &irq_state);
if (irq_state.intsts0 & BEMP)
usbhs_mod_call(priv, irq_empty, priv, &irq_state);
if (irq_state.intsts0 & BRDY)
usbhs_mod_call(priv, irq_ready, priv, &irq_state);
/* INTSTS1 */
if (irq_state.intsts1 & ATTCH)
usbhs_mod_call(priv, irq_attch, priv, &irq_state);
if (irq_state.intsts1 & DTCH)
usbhs_mod_call(priv, irq_dtch, priv, &irq_state);
if (irq_state.intsts1 & SIGN)
usbhs_mod_call(priv, irq_sign, priv, &irq_state);
if (irq_state.intsts1 & SACK)
usbhs_mod_call(priv, irq_sack, priv, &irq_state);
return IRQ_HANDLED;
}
void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod)
{
u16 intenb0 = 0;
u16 intenb1 = 0;
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
/*
* BEMPENB/BRDYENB are picky.
* below method is required
*
* - clear INTSTS0
* - update BEMPENB/BRDYENB
* - update INTSTS0
*/
usbhs_write(priv, INTENB0, 0);
usbhs_write(priv, INTENB1, 0);
usbhs_write(priv, BEMPENB, 0);
usbhs_write(priv, BRDYENB, 0);
/*
* see also
* usbhs_interrupt
*/
/*
* it don't enable DVSE (intenb0) here
* but "mod->irq_dev_state" will be called.
*/
if (info->irq_vbus)
intenb0 |= VBSE;
if (mod) {
/*
* INTSTS0
*/
if (mod->irq_ctrl_stage)
intenb0 |= CTRE;
if (mod->irq_empty && mod->irq_bempsts) {
usbhs_write(priv, BEMPENB, mod->irq_bempsts);
intenb0 |= BEMPE;
}
if (mod->irq_ready && mod->irq_brdysts) {
usbhs_write(priv, BRDYENB, mod->irq_brdysts);
intenb0 |= BRDYE;
}
/*
* INTSTS1
*/
if (mod->irq_attch)
intenb1 |= ATTCHE;
if (mod->irq_dtch)
intenb1 |= DTCHE;
if (mod->irq_sign)
intenb1 |= SIGNE;
if (mod->irq_sack)
intenb1 |= SACKE;
}
if (intenb0)
usbhs_write(priv, INTENB0, intenb0);
if (intenb1)
usbhs_write(priv, INTENB1, intenb1);
}

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/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef RENESAS_USB_MOD_H
#define RENESAS_USB_MOD_H
#include <linux/spinlock.h>
#include <linux/usb/renesas_usbhs.h>
#include "common.h"
/*
* struct
*/
struct usbhs_irq_state {
u16 intsts0;
u16 intsts1;
u16 brdysts;
u16 nrdysts;
u16 bempsts;
};
struct usbhs_mod {
char *name;
/*
* entry point from common.c
*/
int (*start)(struct usbhs_priv *priv);
int (*stop)(struct usbhs_priv *priv);
/*
* INTSTS0
*/
/* DVST (DVSQ) */
int (*irq_dev_state)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
/* CTRT (CTSQ) */
int (*irq_ctrl_stage)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
/* BEMP / BEMPSTS */
int (*irq_empty)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
u16 irq_bempsts;
/* BRDY / BRDYSTS */
int (*irq_ready)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
u16 irq_brdysts;
/*
* INTSTS1
*/
/* ATTCHE */
int (*irq_attch)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
/* DTCHE */
int (*irq_dtch)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
/* SIGN */
int (*irq_sign)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
/* SACK */
int (*irq_sack)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
struct usbhs_priv *priv;
};
struct usbhs_mod_info {
struct usbhs_mod *mod[USBHS_MAX];
struct usbhs_mod *curt; /* current mod */
/*
* INTSTS0 :: VBINT
*
* This function will be used as autonomy mode
* when platform cannot call notify_hotplug.
*
* This callback cannot be member of "struct usbhs_mod"
* because it will be used even though
* host/gadget has not been selected.
*/
int (*irq_vbus)(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state);
};
/*
* for host/gadget module
*/
struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
int usbhs_mod_is_host(struct usbhs_priv *priv);
int usbhs_mod_change(struct usbhs_priv *priv, int id);
int usbhs_mod_probe(struct usbhs_priv *priv);
void usbhs_mod_remove(struct usbhs_priv *priv);
void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
/*
* status functions
*/
int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
/*
* callback functions
*/
void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
#define usbhs_mod_call(priv, func, param...) \
({ \
struct usbhs_mod *mod; \
mod = usbhs_mod_get_current(priv); \
!mod ? -ENODEV : \
!mod->func ? 0 : \
mod->func(param); \
})
/*
* host / gadget control
*/
#if defined(CONFIG_USB_RENESAS_USBHS_HCD) || \
defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE)
extern int usbhs_mod_host_probe(struct usbhs_priv *priv);
extern int usbhs_mod_host_remove(struct usbhs_priv *priv);
#else
static inline int usbhs_mod_host_probe(struct usbhs_priv *priv)
{
return 0;
}
static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
{
}
#endif
#if defined(CONFIG_USB_RENESAS_USBHS_UDC) || \
defined(CONFIG_USB_RENESAS_USBHS_UDC_MODULE)
extern int usbhs_mod_gadget_probe(struct usbhs_priv *priv);
extern void usbhs_mod_gadget_remove(struct usbhs_priv *priv);
#else
static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
{
return 0;
}
static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
{
}
#endif
#endif /* RENESAS_USB_MOD_H */

1029
drivers/usb/renesas_usbhs/mod_gadget.c Normal file
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1585
drivers/usb/renesas_usbhs/mod_host.c Normal file
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826
drivers/usb/renesas_usbhs/pipe.c Normal file
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/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/delay.h>
#include <linux/slab.h>
#include "common.h"
#include "pipe.h"
/*
* macros
*/
#define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2)
#define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f)
#define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f)
#define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f)
#define usbhsp_flags_init(p) do {(p)->flags = 0; } while (0)
/*
* for debug
*/
static char *usbhsp_pipe_name[] = {
[USB_ENDPOINT_XFER_CONTROL] = "DCP",
[USB_ENDPOINT_XFER_BULK] = "BULK",
[USB_ENDPOINT_XFER_INT] = "INT",
[USB_ENDPOINT_XFER_ISOC] = "ISO",
};
char *usbhs_pipe_name(struct usbhs_pipe *pipe)
{
return usbhsp_pipe_name[usbhs_pipe_type(pipe)];
}
/*
* DCPCTR/PIPEnCTR functions
*/
static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int offset = usbhsp_addr_offset(pipe);
if (usbhs_pipe_is_dcp(pipe))
usbhs_bset(priv, DCPCTR, mask, val);
else
usbhs_bset(priv, PIPEnCTR + offset, mask, val);
}
static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int offset = usbhsp_addr_offset(pipe);
if (usbhs_pipe_is_dcp(pipe))
return usbhs_read(priv, DCPCTR);
else
return usbhs_read(priv, PIPEnCTR + offset);
}
/*
* DCP/PIPE functions
*/
static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe,
u16 dcp_reg, u16 pipe_reg,
u16 mask, u16 val)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
if (usbhs_pipe_is_dcp(pipe))
usbhs_bset(priv, dcp_reg, mask, val);
else
usbhs_bset(priv, pipe_reg, mask, val);
}
/*
* DCPCFG/PIPECFG functions
*/
static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
__usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val);
}
/*
* PIPEnTRN/PIPEnTRE functions
*/
static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct device *dev = usbhs_priv_to_dev(priv);
int num = usbhs_pipe_number(pipe);
u16 reg;
/*
* It is impossible to calculate address,
* since PIPEnTRN addresses were mapped randomly.
*/
#define CASE_PIPExTRN(a) \
case 0x ## a: \
reg = PIPE ## a ## TRN; \
break;
switch (num) {
CASE_PIPExTRN(1);
CASE_PIPExTRN(2);
CASE_PIPExTRN(3);
CASE_PIPExTRN(4);
CASE_PIPExTRN(5);
CASE_PIPExTRN(B);
CASE_PIPExTRN(C);
CASE_PIPExTRN(D);
CASE_PIPExTRN(E);
CASE_PIPExTRN(F);
CASE_PIPExTRN(9);
CASE_PIPExTRN(A);
default:
dev_err(dev, "unknown pipe (%d)\n", num);
return;
}
__usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val);
}
static void usbhsp_pipe_tre_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct device *dev = usbhs_priv_to_dev(priv);
int num = usbhs_pipe_number(pipe);
u16 reg;
/*
* It is impossible to calculate address,
* since PIPEnTRE addresses were mapped randomly.
*/
#define CASE_PIPExTRE(a) \
case 0x ## a: \
reg = PIPE ## a ## TRE; \
break;
switch (num) {
CASE_PIPExTRE(1);
CASE_PIPExTRE(2);
CASE_PIPExTRE(3);
CASE_PIPExTRE(4);
CASE_PIPExTRE(5);
CASE_PIPExTRE(B);
CASE_PIPExTRE(C);
CASE_PIPExTRE(D);
CASE_PIPExTRE(E);
CASE_PIPExTRE(F);
CASE_PIPExTRE(9);
CASE_PIPExTRE(A);
default:
dev_err(dev, "unknown pipe (%d)\n", num);
return;
}
__usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val);
}
/*
* PIPEBUF
*/
static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
if (usbhs_pipe_is_dcp(pipe))
return;
__usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val);
}
/*
* DCPMAXP/PIPEMAXP
*/
static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
{
__usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val);
}
/*
* pipe control functions
*/
static void usbhsp_pipe_select(struct usbhs_pipe *pipe)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
/*
* On pipe, this is necessary before
* accesses to below registers.
*
* PIPESEL : usbhsp_pipe_select
* PIPECFG : usbhsp_pipe_cfg_xxx
* PIPEBUF : usbhsp_pipe_buf_xxx
* PIPEMAXP : usbhsp_pipe_maxp_xxx
* PIPEPERI
*/
/*
* if pipe is dcp, no pipe is selected.
* it is no problem, because dcp have its register
*/
usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe));
}
static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
int timeout = 1024;
u16 val;
/*
* make sure....
*
* Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is
* specified by the CURPIPE bits.
* When changing the setting of this bit after changing
* the PID bits for the selected pipe from BUF to NAK,
* check that CSSTS = 0 and PBUSY = 0.
*/
/*
* CURPIPE bit = 0
*
* see also
* "Operation"
* - "Pipe Control"
* - "Pipe Control Registers Switching Procedure"
*/
usbhs_write(priv, CFIFOSEL, 0);
usbhs_pipe_disable(pipe);
do {
val = usbhsp_pipectrl_get(pipe);
val &= CSSTS | PID_MASK;
if (!val)
return 0;
udelay(10);
} while (timeout--);
return -EBUSY;
}
int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe)
{
u16 val;
val = usbhsp_pipectrl_get(pipe);
if (val & BSTS)
return 0;
return -EBUSY;
}
/*
* PID ctrl
*/
static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe)
{
u16 pid = usbhsp_pipectrl_get(pipe);
pid &= PID_MASK;
/*
* see
* "Pipe n Control Register" - "PID"
*/
switch (pid) {
case PID_STALL11:
usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10);
/* fall-through */
case PID_STALL10:
usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK);
}
}
void usbhs_pipe_disable(struct usbhs_pipe *pipe)
{
int timeout = 1024;
u16 val;
/* see "Pipe n Control Register" - "PID" */
__usbhsp_pid_try_nak_if_stall(pipe);
usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK);
do {
val = usbhsp_pipectrl_get(pipe);
val &= PBUSY;
if (!val)
break;
udelay(10);
} while (timeout--);
}
void usbhs_pipe_enable(struct usbhs_pipe *pipe)
{
/* see "Pipe n Control Register" - "PID" */
__usbhsp_pid_try_nak_if_stall(pipe);
usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF);
}
void usbhs_pipe_stall(struct usbhs_pipe *pipe)
{
u16 pid = usbhsp_pipectrl_get(pipe);
pid &= PID_MASK;
/*
* see
* "Pipe n Control Register" - "PID"
*/
switch (pid) {
case PID_NAK:
usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10);
break;
case PID_BUF:
usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11);
break;
}
}
int usbhs_pipe_is_stall(struct usbhs_pipe *pipe)
{
u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK;
return (int)(pid == PID_STALL10 || pid == PID_STALL11);
}
void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len)
{
if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
return;
/*
* clear and disable transfer counter for IN/OUT pipe
*/
usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR);
/*
* Only IN direction bulk pipe can use transfer count.
* Without using this function,
* received data will break if it was large data size.
* see PIPEnTRN/PIPEnTRE for detail
*/
if (usbhs_pipe_is_dir_in(pipe)) {
int maxp = usbhs_pipe_get_maxpacket(pipe);
usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp));
usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */
}
}
/*
* pipe setup
*/
static int usbhsp_possible_double_buffer(struct usbhs_pipe *pipe)
{
/*
* only ISO / BULK pipe can use double buffer
*/
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) ||
usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
return 1;
return 0;
}
static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
int is_host,
int dir_in)
{
u16 type = 0;
u16 bfre = 0;
u16 dblb = 0;
u16 cntmd = 0;
u16 dir = 0;
u16 epnum = 0;
u16 shtnak = 0;
u16 type_array[] = {
[USB_ENDPOINT_XFER_BULK] = TYPE_BULK,
[USB_ENDPOINT_XFER_INT] = TYPE_INT,
[USB_ENDPOINT_XFER_ISOC] = TYPE_ISO,
};
int is_double = usbhsp_possible_double_buffer(pipe);
if (usbhs_pipe_is_dcp(pipe))
return -EINVAL;
/*
* PIPECFG
*
* see
* - "Register Descriptions" - "PIPECFG" register
* - "Features" - "Pipe configuration"
* - "Operation" - "Pipe Control"
*/
/* TYPE */
type = type_array[usbhs_pipe_type(pipe)];
/* BFRE */
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
bfre = 0; /* FIXME */
/* DBLB */
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
dblb = (is_double) ? DBLB : 0;
/* CNTMD */
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
cntmd = 0; /* FIXME */
/* DIR */
if (dir_in)
usbhsp_flags_set(pipe, IS_DIR_HOST);
if (!!is_host ^ !!dir_in)
dir |= DIR_OUT;
if (!dir)
usbhsp_flags_set(pipe, IS_DIR_IN);
/* SHTNAK */
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) &&
!dir)
shtnak = SHTNAK;
/* EPNUM */
epnum = 0; /* see usbhs_pipe_config_update() */
return type |
bfre |
dblb |
cntmd |
dir |
shtnak |
epnum;
}
static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
struct device *dev = usbhs_priv_to_dev(priv);
int pipe_num = usbhs_pipe_number(pipe);
int is_double = usbhsp_possible_double_buffer(pipe);
u16 buff_size;
u16 bufnmb;
u16 bufnmb_cnt;
/*
* PIPEBUF
*
* see
* - "Register Descriptions" - "PIPEBUF" register
* - "Features" - "Pipe configuration"
* - "Operation" - "FIFO Buffer Memory"
* - "Operation" - "Pipe Control"
*
* ex) if pipe6 - pipe9 are USB_ENDPOINT_XFER_INT (SH7724)
*
* BUFNMB: PIPE
* 0: pipe0 (DCP 256byte)
* 1: -
* 2: -
* 3: -
* 4: pipe6 (INT 64byte)
* 5: pipe7 (INT 64byte)
* 6: pipe8 (INT 64byte)
* 7: pipe9 (INT 64byte)
* 8 - xx: free (for BULK, ISOC)
*/
/*
* FIXME
*
* it doesn't have good buffer allocator
*
* DCP : 256 byte
* BULK: 512 byte
* INT : 64 byte
* ISOC: 512 byte
*/
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_CONTROL))
buff_size = 256;
else if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT))
buff_size = 64;
else
buff_size = 512;
/* change buff_size to register value */
bufnmb_cnt = (buff_size / 64) - 1;
/* BUFNMB has been reserved for INT pipe
* see above */
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) {
bufnmb = pipe_num - 2;
} else {
bufnmb = info->bufnmb_last;
info->bufnmb_last += bufnmb_cnt + 1;
/*
* double buffer
*/
if (is_double)
info->bufnmb_last += bufnmb_cnt + 1;
}
dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n",
pipe_num, buff_size, bufnmb);
return (0x1f & bufnmb_cnt) << 10 |
(0xff & bufnmb) << 0;
}
void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel,
u16 epnum, u16 maxp)
{
if (devsel > 0xA) {
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct device *dev = usbhs_priv_to_dev(priv);
dev_err(dev, "devsel error %d\n", devsel);
devsel = 0;
}
usbhsp_pipe_barrier(pipe);
pipe->maxp = maxp;
usbhsp_pipe_select(pipe);
usbhsp_pipe_maxp_set(pipe, 0xFFFF,
(devsel << 12) |
maxp);
if (!usbhs_pipe_is_dcp(pipe))
usbhsp_pipe_cfg_set(pipe, 0x000F, epnum);
}
/*
* 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);
}
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);
}
void usbhs_pipe_clear(struct usbhs_pipe *pipe)
{
usbhsp_pipectrl_set(pipe, ACLRM, ACLRM);
usbhsp_pipectrl_set(pipe, ACLRM, 0);
}
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;
}
void usbhs_pipe_init(struct usbhs_priv *priv,
int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map))
{
struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
struct usbhs_pipe *pipe;
int i;
/*
* FIXME
*
* driver needs good allocator.
*
* find first free buffer area (BULK, ISOC)
* (DCP, INT area is fixed)
*
* buffer number 0 - 3 have been reserved for DCP
* see
* usbhsp_to_bufnmb
*/
info->bufnmb_last = 4;
usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT))
info->bufnmb_last++;
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;
}
pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in);
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_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_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);
u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
int pipe_size = usbhs_get_dparam(priv, pipe_size);
int i;
/* This driver expects 1st pipe is DCP */
if (pipe_type[0] != USB_ENDPOINT_XFER_CONTROL) {
dev_err(dev, "1st PIPE is not DCP\n");
return -EINVAL;
}
info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL);
if (!info->pipe) {
dev_err(dev, "Could not allocate pipe\n");
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_type[i] & USB_ENDPOINT_XFERTYPE_MASK;
dev_dbg(dev, "pipe %x\t: %s\n",
i, usbhsp_pipe_name[pipe_type[i]]);
}
return 0;
}
void usbhs_pipe_remove(struct usbhs_priv *priv)
{
struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
kfree(info->pipe);
}

116
drivers/usb/renesas_usbhs/pipe.h Normal file
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@ -0,0 +1,116 @@
/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef RENESAS_USB_PIPE_H
#define RENESAS_USB_PIPE_H
#include "common.h"
#include "fifo.h"
/*
* struct
*/
struct usbhs_pipe {
u32 pipe_type; /* USB_ENDPOINT_XFER_xxx */
struct usbhs_priv *priv;
struct usbhs_fifo *fifo;
struct list_head list;
int maxp;
u32 flags;
#define USBHS_PIPE_FLAGS_IS_USED (1 << 0)
#define USBHS_PIPE_FLAGS_IS_DIR_IN (1 << 1)
#define USBHS_PIPE_FLAGS_IS_DIR_HOST (1 << 2)
struct usbhs_pkt_handle *handler;
void *mod_private;
};
struct usbhs_pipe_info {
struct usbhs_pipe *pipe;
int size; /* array size of "pipe" */
int bufnmb_last; /* FIXME : driver needs good allocator */
int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map);
};
/*
* pipe list
*/
#define __usbhs_for_each_pipe(start, pos, info, i) \
for (i = start, pos = (info)->pipe + i; \
i < (info)->size; \
i++, pos = (info)->pipe + i)
#define usbhs_for_each_pipe(pos, priv, i) \
__usbhs_for_each_pipe(1, pos, &((priv)->pipe_info), i)
#define usbhs_for_each_pipe_with_dcp(pos, priv, i) \
__usbhs_for_each_pipe(0, pos, &((priv)->pipe_info), i)
/*
* data
*/
#define usbhs_priv_to_pipeinfo(pr) (&(pr)->pipe_info)
/*
* pipe control
*/
char *usbhs_pipe_name(struct usbhs_pipe *pipe);
struct usbhs_pipe
*usbhs_pipe_malloc(struct usbhs_priv *priv, int endpoint_type, int dir_in);
int usbhs_pipe_probe(struct usbhs_priv *priv);
void usbhs_pipe_remove(struct usbhs_priv *priv);
int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe);
void usbhs_pipe_init(struct usbhs_priv *priv,
int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map));
int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe);
void usbhs_pipe_clear(struct usbhs_pipe *pipe);
int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
void usbhs_pipe_enable(struct usbhs_pipe *pipe);
void usbhs_pipe_disable(struct usbhs_pipe *pipe);
void usbhs_pipe_stall(struct usbhs_pipe *pipe);
int usbhs_pipe_is_stall(struct usbhs_pipe *pipe);
void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len);
void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo);
void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel,
u16 epnum, u16 maxp);
#define usbhs_pipe_sequence_data0(pipe) usbhs_pipe_data_sequence(pipe, 0)
#define usbhs_pipe_sequence_data1(pipe) usbhs_pipe_data_sequence(pipe, 1)
void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int data);
#define usbhs_pipe_to_priv(p) ((p)->priv)
#define usbhs_pipe_number(p) (int)((p) - (p)->priv->pipe_info.pipe)
#define usbhs_pipe_is_dcp(p) ((p)->priv->pipe_info.pipe == (p))
#define usbhs_pipe_to_fifo(p) ((p)->fifo)
#define usbhs_pipe_is_busy(p) usbhs_pipe_to_fifo(p)
#define usbhs_pipe_type(p) ((p)->pipe_type)
#define usbhs_pipe_type_is(p, t) ((p)->pipe_type == t)
/*
* dcp control
*/
struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv);
void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe);
void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out);
#endif /* RENESAS_USB_PIPE_H */