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usb: dwc3: debugfs: remove test mode interface

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There are some issues around for enabling/disabling this mode and
handling it. It does not work perfectly (yet). However we have a few
gadgets tested successfuly so far. That means we are quite confident
that we won't need this in near future.
So I'm for removing it and bringing a working version back once there is
a need for it.

Thanks to Dan Carpenter who spotted the wrong memory handling here.

[ balbi@ti.com : made it actually apply ]

Cc: Dan Carpenter <error27@gmail.com>
Cc: wharms@bfs.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior 2011-08-29 13:56:35 +02:00 committed by Felipe Balbi
parent c7fcdeb262
commit e7225315a8
1 changed files with 0 additions and 94 deletions
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94
drivers/usb/dwc3/debugfs.c
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@ -406,93 +406,6 @@ static const struct file_operations dwc3_regdump_fops = {
.release = single_release,
};
static int dwc3_send_testmode_cmd(struct dwc3 *dwc, int mode)
{
u32 timeout = 250;
dwc3_writel(dwc->regs, DWC3_DGCMDPAR, mode);
dwc3_writel(dwc->regs, DWC3_DGCMD, DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK |
DWC3_DEPCMD_CMDACT);
do {
u32 reg;
reg = dwc3_readl(dwc->regs, DWC3_DGCMD);
if (!(reg & DWC3_DEPCMD_CMDACT))
return 0;
timeout--;
if (!timeout)
return -ETIMEDOUT;
mdelay(1);
} while (1);
}
static struct dwc3_trb_hw trb_0 __aligned(16);
static struct dwc3_trb_hw trb_1 __aligned(16);
#define BUF_SIZE 4096
static int dwc3_testmode_open(struct inode *inode, struct file *file)
{
struct dwc3 *dwc = inode->i_private;
struct dwc3_gadget_ep_cmd_params par0;
struct dwc3_gadget_ep_cmd_params par1;
struct dwc3_trb trb;
int ret;
u8 *buf0;
u8 *buf1;
buf0 = kmalloc(BUF_SIZE, GFP_KERNEL);
if (!buf0)
return -ENOMEM;
buf1 = kmalloc(BUF_SIZE, GFP_KERNEL);
if (!buf1) {
kfree(buf0);
return -ENOMEM;
}
memset(buf0, 0xaa, BUF_SIZE);
memset(buf1, 0x33, BUF_SIZE);
memset(&trb, 0, sizeof(trb));
memset(&par0, 0, sizeof(par0));
memset(&par1, 0, sizeof(par1));
trb.lst = 1;
trb.trbctl = DWC3_TRBCTL_NORMAL;
trb.length = BUF_SIZE;
trb.hwo = 1;
trb.bplh = virt_to_phys(buf0);
dwc3_trb_to_hw(&trb, &trb_0);
trb.bplh = virt_to_phys(buf1);
dwc3_trb_to_hw(&trb, &trb_1);
par0.param0.depstrtxfer.transfer_desc_addr_high =
upper_32_bits(virt_to_phys(&trb_0));
par0.param1.depstrtxfer.transfer_desc_addr_low =
lower_32_bits(virt_to_phys(&trb_0));
par1.param0.depstrtxfer.transfer_desc_addr_high =
upper_32_bits(virt_to_phys(&trb_1));
par1.param1.depstrtxfer.transfer_desc_addr_low =
lower_32_bits(virt_to_phys(&trb_1));
dwc3_send_testmode_cmd(dwc, 1);
ret = dwc3_send_gadget_ep_cmd(dwc, 0, DWC3_DEPCMD_STARTTRANSFER, &par0);
ret = dwc3_send_gadget_ep_cmd(dwc, 1, DWC3_DEPCMD_STARTTRANSFER, &par1);
dwc3_send_testmode_cmd(dwc, 0);
return -EBUSY;
}
static const struct file_operations dwc3_testmode_fops = {
.open = dwc3_testmode_open,
.read = seq_read,
.release = single_release,
};
int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
{
struct dentry *root;
@ -513,13 +426,6 @@ int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
ret = PTR_ERR(file);
goto err1;
}
file = debugfs_create_file("testmode", S_IRUGO, root, dwc,
&dwc3_testmode_fops);
if (IS_ERR(file)) {
ret = PTR_ERR(file);
goto err1;
}
return 0;
err1: