From e7225315a89731d0f986c20165184f1dc9a9bf2b Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 29 Aug 2011 13:56:35 +0200 Subject: [PATCH] usb: dwc3: debugfs: remove test mode interface 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 Cc: wharms@bfs.de Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/debugfs.c | 94 -------------------------------------- 1 file changed, 94 deletions(-) diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index dd861c499d28..20d329f23408 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -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: -- 2.30.2