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openwrt-owl/target/linux/cns3xxx/files/drivers/usb/dwc/otg_attr.c

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/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.c $
* $Revision: #31 $
* $Date: 2008/07/15 $
* $Change: 1064918 $
*
* Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
* "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
* otherwise expressly agreed to in writing between Synopsys and you.
*
* The Software IS NOT an item of Licensed Software or Licensed Product under
* any End User Software License Agreement or Agreement for Licensed Product
* with Synopsys or any supplement thereto. You are permitted to use and
* redistribute this Software in source and binary forms, with or without
* modification, provided that redistributions of source code must retain this
* notice. You may not view, use, disclose, copy or distribute this file or
* any information contained herein except pursuant to this license grant from
* Synopsys. If you do not agree with this notice, including the disclaimer
* below, then you are not authorized to use the Software.
*
* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* ========================================================================== */
/** @file
*
* The diagnostic interface will provide access to the controller for
* bringing up the hardware and testing. The Linux driver attributes
* feature will be used to provide the Linux Diagnostic
* Interface. These attributes are accessed through sysfs.
*/
/** @page "Linux Module Attributes"
*
* The Linux module attributes feature is used to provide the Linux
* Diagnostic Interface. These attributes are accessed through sysfs.
* The diagnostic interface will provide access to the controller for
* bringing up the hardware and testing.
The following table shows the attributes.
<table>
<tr>
<td><b> Name</b></td>
<td><b> Description</b></td>
<td><b> Access</b></td>
</tr>
<tr>
<td> mode </td>
<td> Returns the current mode: 0 for device mode, 1 for host mode</td>
<td> Read</td>
</tr>
<tr>
<td> hnpcapable </td>
<td> Gets or sets the "HNP-capable" bit in the Core USB Configuraton Register.
Read returns the current value.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> srpcapable </td>
<td> Gets or sets the "SRP-capable" bit in the Core USB Configuraton Register.
Read returns the current value.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> hnp </td>
<td> Initiates the Host Negotiation Protocol. Read returns the status.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> srp </td>
<td> Initiates the Session Request Protocol. Read returns the status.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> buspower </td>
<td> Gets or sets the Power State of the bus (0 - Off or 1 - On)</td>
<td> Read/Write</td>
</tr>
<tr>
<td> bussuspend </td>
<td> Suspends the USB bus.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> busconnected </td>
<td> Gets the connection status of the bus</td>
<td> Read</td>
</tr>
<tr>
<td> gotgctl </td>
<td> Gets or sets the Core Control Status Register.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> gusbcfg </td>
<td> Gets or sets the Core USB Configuration Register</td>
<td> Read/Write</td>
</tr>
<tr>
<td> grxfsiz </td>
<td> Gets or sets the Receive FIFO Size Register</td>
<td> Read/Write</td>
</tr>
<tr>
<td> gnptxfsiz </td>
<td> Gets or sets the non-periodic Transmit Size Register</td>
<td> Read/Write</td>
</tr>
<tr>
<td> gpvndctl </td>
<td> Gets or sets the PHY Vendor Control Register</td>
<td> Read/Write</td>
</tr>
<tr>
<td> ggpio </td>
<td> Gets the value in the lower 16-bits of the General Purpose IO Register
or sets the upper 16 bits.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> guid </td>
<td> Gets or sets the value of the User ID Register</td>
<td> Read/Write</td>
</tr>
<tr>
<td> gsnpsid </td>
<td> Gets the value of the Synopsys ID Regester</td>
<td> Read</td>
</tr>
<tr>
<td> devspeed </td>
<td> Gets or sets the device speed setting in the DCFG register</td>
<td> Read/Write</td>
</tr>
<tr>
<td> enumspeed </td>
<td> Gets the device enumeration Speed.</td>
<td> Read</td>
</tr>
<tr>
<td> hptxfsiz </td>
<td> Gets the value of the Host Periodic Transmit FIFO</td>
<td> Read</td>
</tr>
<tr>
<td> hprt0 </td>
<td> Gets or sets the value in the Host Port Control and Status Register</td>
<td> Read/Write</td>
</tr>
<tr>
<td> regoffset </td>
<td> Sets the register offset for the next Register Access</td>
<td> Read/Write</td>
</tr>
<tr>
<td> regvalue </td>
<td> Gets or sets the value of the register at the offset in the regoffset attribute.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> remote_wakeup </td>
<td> On read, shows the status of Remote Wakeup. On write, initiates a remote
wakeup of the host. When bit 0 is 1 and Remote Wakeup is enabled, the Remote
Wakeup signalling bit in the Device Control Register is set for 1
milli-second.</td>
<td> Read/Write</td>
</tr>
<tr>
<td> regdump </td>
<td> Dumps the contents of core registers.</td>
<td> Read</td>
</tr>
<tr>
<td> spramdump </td>
<td> Dumps the contents of core registers.</td>
<td> Read</td>
</tr>
<tr>
<td> hcddump </td>
<td> Dumps the current HCD state.</td>
<td> Read</td>
</tr>
<tr>
<td> hcd_frrem </td>
<td> Shows the average value of the Frame Remaining
field in the Host Frame Number/Frame Remaining register when an SOF interrupt
occurs. This can be used to determine the average interrupt latency. Also
shows the average Frame Remaining value for start_transfer and the "a" and
"b" sample points. The "a" and "b" sample points may be used during debugging
bto determine how long it takes to execute a section of the HCD code.</td>
<td> Read</td>
</tr>
<tr>
<td> rd_reg_test </td>
<td> Displays the time required to read the GNPTXFSIZ register many times
(the output shows the number of times the register is read).
<td> Read</td>
</tr>
<tr>
<td> wr_reg_test </td>
<td> Displays the time required to write the GNPTXFSIZ register many times
(the output shows the number of times the register is written).
<td> Read</td>
</tr>
</table>
Example usage:
To get the current mode:
cat /sys/devices/lm0/mode
To power down the USB:
echo 0 > /sys/devices/lm0/buspower
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/stat.h> /* permission constants */
#include <linux/version.h>
#include <asm/sizes.h>
#include <asm/io.h>
#include <asm/sizes.h>
#include "otg_plat.h"
#include "otg_attr.h"
#include "otg_driver.h"
#include "otg_pcd.h"
#include "otg_hcd.h"
/*
* MACROs for defining sysfs attribute
*/
#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
{ \
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t val; \
val = dwc_read_reg32 (_addr_); \
val = (val & (_mask_)) >> _shift_; \
return sprintf (buf, "%s = 0x%x\n", _string_, val); \
}
#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t set = simple_strtoul(buf, NULL, 16); \
uint32_t clear = set; \
clear = ((~clear) << _shift_) & _mask_; \
set = (set << _shift_) & _mask_; \
dev_dbg(_dev, "Storing Address=0x%08x Set=0x%08x Clear=0x%08x\n", (uint32_t)_addr_, set, clear); \
dwc_modify_reg32(_addr_, clear, set); \
return count; \
}
/*
* MACROs for defining sysfs attribute for 32-bit registers
*/
#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
{ \
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t val; \
val = dwc_read_reg32 (_addr_); \
return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
}
#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \
static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t val = simple_strtoul(buf, NULL, 16); \
dev_dbg(_dev, "Storing Address=0x%08x Val=0x%08x\n", (uint32_t)_addr_, val); \
dwc_write_reg32(_addr_, val); \
return count; \
}
#define DWC_OTG_DEVICE_ATTR_BITFIELD_RW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
#define DWC_OTG_DEVICE_ATTR_BITFIELD_RO(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
#define DWC_OTG_DEVICE_ATTR_REG32_RW(_otg_attr_name_,_addr_,_string_) \
DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \
DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
#define DWC_OTG_DEVICE_ATTR_REG32_RO(_otg_attr_name_,_addr_,_string_) \
DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
/** @name Functions for Show/Store of Attributes */
/**@{*/
/**
* Show the register offset of the Register Access.
*/
static ssize_t regoffset_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
return snprintf(buf, sizeof("0xFFFFFFFF\n")+1,"0x%08x\n", otg_dev->reg_offset);
}
/**
* Set the register offset for the next Register Access Read/Write
*/
static ssize_t regoffset_store( struct device *_dev,
struct device_attribute *attr,
const char *buf,
size_t count )
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t offset = simple_strtoul(buf, NULL, 16);
//dev_dbg(_dev, "Offset=0x%08x\n", offset);
if (offset < SZ_256K ) {
otg_dev->reg_offset = offset;
}
else {
dev_err( _dev, "invalid offset\n" );
}
return count;
}
DEVICE_ATTR(regoffset, S_IRUGO|S_IWUSR, (void *)regoffset_show, regoffset_store);
/**
* Show the value of the register at the offset in the reg_offset
* attribute.
*/
static ssize_t regvalue_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t val;
volatile uint32_t *addr;
if (otg_dev->reg_offset != 0xFFFFFFFF &&
0 != otg_dev->base) {
/* Calculate the address */
addr = (uint32_t*)(otg_dev->reg_offset +
(uint8_t*)otg_dev->base);
//dev_dbg(_dev, "@0x%08x\n", (unsigned)addr);
val = dwc_read_reg32( addr );
return snprintf(buf, sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n")+1,
"Reg@0x%06x = 0x%08x\n",
otg_dev->reg_offset, val);
}
else {
dev_err(_dev, "Invalid offset (0x%0x)\n",
otg_dev->reg_offset);
return sprintf(buf, "invalid offset\n" );
}
}
/**
* Store the value in the register at the offset in the reg_offset
* attribute.
*
*/
static ssize_t regvalue_store( struct device *_dev,
struct device_attribute *attr,
const char *buf,
size_t count )
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
volatile uint32_t * addr;
uint32_t val = simple_strtoul(buf, NULL, 16);
//dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val);
if (otg_dev->reg_offset != 0xFFFFFFFF && 0 != otg_dev->base) {
/* Calculate the address */
addr = (uint32_t*)(otg_dev->reg_offset +
(uint8_t*)otg_dev->base);
//dev_dbg(_dev, "@0x%08x\n", (unsigned)addr);
dwc_write_reg32( addr, val );
}
else {
dev_err(_dev, "Invalid Register Offset (0x%08x)\n",
otg_dev->reg_offset);
}
return count;
}
DEVICE_ATTR(regvalue, S_IRUGO|S_IWUSR, regvalue_show, regvalue_store);
/*
* Attributes
*/
DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<20),20,"Mode");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<9),9,"Mode");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<8),8,"Mode");
//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected,otg_dev->core_if->host_if->hprt0,0x01,0,"Bus Connected");
DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl,&(otg_dev->core_if->core_global_regs->gotgctl),"GOTGCTL");
DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,&(otg_dev->core_if->core_global_regs->gusbcfg),"GUSBCFG");
DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,&(otg_dev->core_if->core_global_regs->grxfsiz),"GRXFSIZ");
DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,&(otg_dev->core_if->core_global_regs->gnptxfsiz),"GNPTXFSIZ");
DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,&(otg_dev->core_if->core_global_regs->gpvndctl),"GPVNDCTL");
DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,&(otg_dev->core_if->core_global_regs->ggpio),"GGPIO");
DWC_OTG_DEVICE_ATTR_REG32_RW(guid,&(otg_dev->core_if->core_global_regs->guid),"GUID");
DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,&(otg_dev->core_if->core_global_regs->gsnpsid),"GSNPSID");
DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dcfg),0x3,0,"Device Speed");
DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dsts),0x6,1,"Device Enumeration Speed");
DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,&(otg_dev->core_if->core_global_regs->hptxfsiz),"HPTXFSIZ");
DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0,otg_dev->core_if->host_if->hprt0,"HPRT0");
/**
* @todo Add code to initiate the HNP.
*/
/**
* Show the HNP status bit
*/
static ssize_t hnp_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
gotgctl_data_t val;
val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl));
return sprintf (buf, "HstNegScs = 0x%x\n", val.b.hstnegscs);
}
/**
* Set the HNP Request bit
*/
static ssize_t hnp_store( struct device *_dev,
struct device_attribute *attr,
const char *buf,
size_t count )
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t in = simple_strtoul(buf, NULL, 16);
uint32_t *addr = (uint32_t *)&(otg_dev->core_if->core_global_regs->gotgctl);
gotgctl_data_t mem;
mem.d32 = dwc_read_reg32(addr);
mem.b.hnpreq = in;
dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
dwc_write_reg32(addr, mem.d32);
return count;
}
DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store);
/**
* @todo Add code to initiate the SRP.
*/
/**
* Show the SRP status bit
*/
static ssize_t srp_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
#ifndef DWC_HOST_ONLY
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
gotgctl_data_t val;
val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl));
return sprintf (buf, "SesReqScs = 0x%x\n", val.b.sesreqscs);
#else
return sprintf(buf, "Host Only Mode!\n");
#endif
}
/**
* Set the SRP Request bit
*/
static ssize_t srp_store( struct device *_dev,
struct device_attribute *attr,
const char *buf,
size_t count )
{
#ifndef DWC_HOST_ONLY
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
dwc_otg_pcd_initiate_srp(otg_dev->pcd);
#endif
return count;
}
DEVICE_ATTR(srp, 0644, srp_show, srp_store);
/**
* @todo Need to do more for power on/off?
*/
/**
* Show the Bus Power status
*/
static ssize_t buspower_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
hprt0_data_t val;
val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0);
return sprintf (buf, "Bus Power = 0x%x\n", val.b.prtpwr);
}
/**
* Set the Bus Power status
*/
static ssize_t buspower_store( struct device *_dev,
struct device_attribute *attr,
const char *buf,
size_t count )
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t on = simple_strtoul(buf, NULL, 16);
uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0;
hprt0_data_t mem;
mem.d32 = dwc_read_reg32(addr);
mem.b.prtpwr = on;
//dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
dwc_write_reg32(addr, mem.d32);
return count;
}
DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store);
/**
* @todo Need to do more for suspend?
*/
/**
* Show the Bus Suspend status
*/
static ssize_t bussuspend_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
hprt0_data_t val;
val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0);
return sprintf (buf, "Bus Suspend = 0x%x\n", val.b.prtsusp);
}
/**
* Set the Bus Suspend status
*/
static ssize_t bussuspend_store( struct device *_dev,
struct device_attribute *attr,
const char *buf,
size_t count )
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t in = simple_strtoul(buf, NULL, 16);
uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0;
hprt0_data_t mem;
mem.d32 = dwc_read_reg32(addr);
mem.b.prtsusp = in;
dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
dwc_write_reg32(addr, mem.d32);
return count;
}
DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store);
/**
* Show the status of Remote Wakeup.
*/
static ssize_t remote_wakeup_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
#ifndef DWC_HOST_ONLY
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
dctl_data_t val;
val.d32 =
dwc_read_reg32( &otg_dev->core_if->dev_if->dev_global_regs->dctl);
return sprintf( buf, "Remote Wakeup = %d Enabled = %d\n",
val.b.rmtwkupsig, otg_dev->pcd->remote_wakeup_enable);
#else
return sprintf(buf, "Host Only Mode!\n");
#endif
}
/**
* Initiate a remote wakeup of the host. The Device control register
* Remote Wakeup Signal bit is written if the PCD Remote wakeup enable
* flag is set.
*
*/
static ssize_t remote_wakeup_store( struct device *_dev,
struct device_attribute *attr,
const char *buf,
size_t count )
{
#ifndef DWC_HOST_ONLY
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t val = simple_strtoul(buf, NULL, 16);
if (val&1) {
dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1);
}
else {
dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0);
}
#endif
return count;
}
DEVICE_ATTR(remote_wakeup, S_IRUGO|S_IWUSR, remote_wakeup_show,
remote_wakeup_store);
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t regdump_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
dwc_otg_dump_global_registers( otg_dev->core_if);
if (dwc_otg_is_host_mode(otg_dev->core_if)) {
dwc_otg_dump_host_registers( otg_dev->core_if);
} else {
dwc_otg_dump_dev_registers( otg_dev->core_if);
}
return sprintf( buf, "Register Dump\n" );
}
DEVICE_ATTR(regdump, S_IRUGO|S_IWUSR, regdump_show, 0);
/**
* Dump global registers and either host or device registers (depending on the
* current mode of the core).
*/
static ssize_t spramdump_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
dwc_otg_dump_spram( otg_dev->core_if);
return sprintf( buf, "SPRAM Dump\n" );
}
DEVICE_ATTR(spramdump, S_IRUGO|S_IWUSR, spramdump_show, 0);
/**
* Dump the current hcd state.
*/
static ssize_t hcddump_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
#ifndef DWC_DEVICE_ONLY
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
dwc_otg_hcd_dump_state(otg_dev->hcd);
#endif
return sprintf( buf, "HCD Dump\n" );
}
DEVICE_ATTR(hcddump, S_IRUGO|S_IWUSR, hcddump_show, 0);
/**
* Dump the average frame remaining at SOF. This can be used to
* determine average interrupt latency. Frame remaining is also shown for
* start transfer and two additional sample points.
*/
static ssize_t hcd_frrem_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
#ifndef DWC_DEVICE_ONLY
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
dwc_otg_hcd_dump_frrem(otg_dev->hcd);
#endif
return sprintf( buf, "HCD Dump Frame Remaining\n" );
}
DEVICE_ATTR(hcd_frrem, S_IRUGO|S_IWUSR, hcd_frrem_show, 0);
/**
* Displays the time required to read the GNPTXFSIZ register many times (the
* output shows the number of times the register is read).
*/
#define RW_REG_COUNT 10000000
#define MSEC_PER_JIFFIE 1000/HZ
static ssize_t rd_reg_test_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
int i;
int time;
int start_jiffies;
printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
start_jiffies = jiffies;
for (i = 0; i < RW_REG_COUNT; i++) {
dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz);
}
time = jiffies - start_jiffies;
return sprintf( buf, "Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
RW_REG_COUNT, time * MSEC_PER_JIFFIE, time );
}
DEVICE_ATTR(rd_reg_test, S_IRUGO|S_IWUSR, rd_reg_test_show, 0);
/**
* Displays the time required to write the GNPTXFSIZ register many times (the
* output shows the number of times the register is written).
*/
static ssize_t wr_reg_test_show( struct device *_dev,
struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev = container_of(_dev, struct platform_device, dev); \
dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev); \
uint32_t reg_val;
int i;
int time;
int start_jiffies;
printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
reg_val = dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz);
start_jiffies = jiffies;
for (i = 0; i < RW_REG_COUNT; i++) {
dwc_write_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz, reg_val);
}
time = jiffies - start_jiffies;
return sprintf( buf, "Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
}
DEVICE_ATTR(wr_reg_test, S_IRUGO|S_IWUSR, wr_reg_test_show, 0);
/**@}*/
/**
* Create the device files
*/
void dwc_otg_attr_create (struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int error;
error = device_create_file(dev, &dev_attr_regoffset);
error = device_create_file(dev, &dev_attr_regvalue);
error = device_create_file(dev, &dev_attr_mode);
error = device_create_file(dev, &dev_attr_hnpcapable);
error = device_create_file(dev, &dev_attr_srpcapable);
error = device_create_file(dev, &dev_attr_hnp);
error = device_create_file(dev, &dev_attr_srp);
error = device_create_file(dev, &dev_attr_buspower);
error = device_create_file(dev, &dev_attr_bussuspend);
error = device_create_file(dev, &dev_attr_busconnected);
error = device_create_file(dev, &dev_attr_gotgctl);
error = device_create_file(dev, &dev_attr_gusbcfg);
error = device_create_file(dev, &dev_attr_grxfsiz);
error = device_create_file(dev, &dev_attr_gnptxfsiz);
error = device_create_file(dev, &dev_attr_gpvndctl);
error = device_create_file(dev, &dev_attr_ggpio);
error = device_create_file(dev, &dev_attr_guid);
error = device_create_file(dev, &dev_attr_gsnpsid);
error = device_create_file(dev, &dev_attr_devspeed);
error = device_create_file(dev, &dev_attr_enumspeed);
error = device_create_file(dev, &dev_attr_hptxfsiz);
error = device_create_file(dev, &dev_attr_hprt0);
error = device_create_file(dev, &dev_attr_remote_wakeup);
error = device_create_file(dev, &dev_attr_regdump);
error = device_create_file(dev, &dev_attr_spramdump);
error = device_create_file(dev, &dev_attr_hcddump);
error = device_create_file(dev, &dev_attr_hcd_frrem);
error = device_create_file(dev, &dev_attr_rd_reg_test);
error = device_create_file(dev, &dev_attr_wr_reg_test);
}
/**
* Remove the device files
*/
void dwc_otg_attr_remove (struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
device_remove_file(dev, &dev_attr_regoffset);
device_remove_file(dev, &dev_attr_regvalue);
device_remove_file(dev, &dev_attr_mode);
device_remove_file(dev, &dev_attr_hnpcapable);
device_remove_file(dev, &dev_attr_srpcapable);
device_remove_file(dev, &dev_attr_hnp);
device_remove_file(dev, &dev_attr_srp);
device_remove_file(dev, &dev_attr_buspower);
device_remove_file(dev, &dev_attr_bussuspend);
device_remove_file(dev, &dev_attr_busconnected);
device_remove_file(dev, &dev_attr_gotgctl);
device_remove_file(dev, &dev_attr_gusbcfg);
device_remove_file(dev, &dev_attr_grxfsiz);
device_remove_file(dev, &dev_attr_gnptxfsiz);
device_remove_file(dev, &dev_attr_gpvndctl);
device_remove_file(dev, &dev_attr_ggpio);
device_remove_file(dev, &dev_attr_guid);
device_remove_file(dev, &dev_attr_gsnpsid);
device_remove_file(dev, &dev_attr_devspeed);
device_remove_file(dev, &dev_attr_enumspeed);
device_remove_file(dev, &dev_attr_hptxfsiz);
device_remove_file(dev, &dev_attr_hprt0);
device_remove_file(dev, &dev_attr_remote_wakeup);
device_remove_file(dev, &dev_attr_regdump);
device_remove_file(dev, &dev_attr_spramdump);
device_remove_file(dev, &dev_attr_hcddump);
device_remove_file(dev, &dev_attr_hcd_frrem);
device_remove_file(dev, &dev_attr_rd_reg_test);
device_remove_file(dev, &dev_attr_wr_reg_test);
}
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