diff options
Diffstat (limited to 'target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-hub.c')
| -rw-r--r-- | target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-hub.c | 430 |
1 files changed, 0 insertions, 430 deletions
diff --git a/target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-hub.c b/target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-hub.c deleted file mode 100644 index 8cabaf902d..0000000000 --- a/target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-hub.c +++ /dev/null @@ -1,430 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-hub.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -/*-------------------------------------------------------------------------*/ - -/* - * ADM5120 Root Hub ... the nonsharable stuff - */ - -#define dbg_port(hc, label, num, value) \ - admhc_dbg(hc, \ - "%s port%d " \ - "= 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ - label, num, value, \ - (value & ADMHC_PS_PRSC) ? " PRSC" : "", \ - (value & ADMHC_PS_OCIC) ? " OCIC" : "", \ - (value & ADMHC_PS_PSSC) ? " PSSC" : "", \ - (value & ADMHC_PS_PESC) ? " PESC" : "", \ - (value & ADMHC_PS_CSC) ? " CSC" : "", \ - \ - (value & ADMHC_PS_LSDA) ? " LSDA" : "", \ - (value & ADMHC_PS_PPS) ? " PPS" : "", \ - (value & ADMHC_PS_PRS) ? " PRS" : "", \ - (value & ADMHC_PS_POCI) ? " POCI" : "", \ - (value & ADMHC_PS_PSS) ? " PSS" : "", \ - \ - (value & ADMHC_PS_PES) ? " PES" : "", \ - (value & ADMHC_PS_CCS) ? " CCS" : "" \ - ); - -#define dbg_port_write(hc, label, num, value) \ - admhc_dbg(hc, \ - "%s port%d " \ - "= 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ - label, num, value, \ - (value & ADMHC_PS_PRSC) ? " PRSC" : "", \ - (value & ADMHC_PS_OCIC) ? " OCIC" : "", \ - (value & ADMHC_PS_PSSC) ? " PSSC" : "", \ - (value & ADMHC_PS_PESC) ? " PESC" : "", \ - (value & ADMHC_PS_CSC) ? " CSC" : "", \ - \ - (value & ADMHC_PS_CPP) ? " CPP" : "", \ - (value & ADMHC_PS_SPP) ? " SPP" : "", \ - (value & ADMHC_PS_SPR) ? " SPR" : "", \ - (value & ADMHC_PS_CPS) ? " CPS" : "", \ - (value & ADMHC_PS_SPS) ? " SPS" : "", \ - \ - (value & ADMHC_PS_SPE) ? " SPE" : "", \ - (value & ADMHC_PS_CPE) ? " CPE" : "" \ - ); - -/*-------------------------------------------------------------------------*/ - -/* build "status change" packet (one or two bytes) from HC registers */ - -static int -admhc_hub_status_data(struct usb_hcd *hcd, char *buf) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - int i, changed = 0, length = 1; - int any_connected = 0; - unsigned long flags; - u32 status; - - spin_lock_irqsave(&ahcd->lock, flags); - if (!HCD_HW_ACCESSIBLE(hcd)) - goto done; - - /* init status */ - status = admhc_read_rhdesc(ahcd); - if (status & (ADMHC_RH_LPSC | ADMHC_RH_OCIC)) - buf[0] = changed = 1; - else - buf[0] = 0; - if (ahcd->num_ports > 7) { - buf[1] = 0; - length++; - } - - /* look at each port */ - for (i = 0; i < ahcd->num_ports; i++) { - status = admhc_read_portstatus(ahcd, i); - - /* can't autostop if ports are connected */ - any_connected |= (status & ADMHC_PS_CCS); - - if (status & (ADMHC_PS_CSC | ADMHC_PS_PESC | ADMHC_PS_PSSC - | ADMHC_PS_OCIC | ADMHC_PS_PRSC)) { - changed = 1; - if (i < 7) - buf[0] |= 1 << (i + 1); - else - buf[1] |= 1 << (i - 7); - } - } - - if (admhc_root_hub_state_changes(ahcd, changed, - any_connected)) - set_bit(HCD_FLAG_POLL_RH, &hcd->flags); - else - clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); - -done: - spin_unlock_irqrestore(&ahcd->lock, flags); - - return changed ? length : 0; -} - -/*-------------------------------------------------------------------------*/ - -static int admhc_get_hub_descriptor(struct admhcd *ahcd, char *buf) -{ - struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf; - u32 rh = admhc_read_rhdesc(ahcd); - u16 temp; - - desc->bDescriptorType = USB_DT_HUB; /* Hub-descriptor */ - desc->bPwrOn2PwrGood = ADMHC_POTPGT/2; /* use default value */ - desc->bHubContrCurrent = 0x00; /* 0mA */ - - desc->bNbrPorts = ahcd->num_ports; - temp = 1 + (ahcd->num_ports / 8); - desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp; - - /* FIXME */ - temp = 0; - if (rh & ADMHC_RH_NPS) /* no power switching? */ - temp |= 0x0002; - if (rh & ADMHC_RH_PSM) /* per-port power switching? */ - temp |= 0x0001; - if (rh & ADMHC_RH_NOCP) /* no overcurrent reporting? */ - temp |= 0x0010; - else if (rh & ADMHC_RH_OCPM) /* per-port overcurrent reporting? */ - temp |= 0x0008; - desc->wHubCharacteristics = (__force __u16)cpu_to_hc16(ahcd, temp); - - /* ports removable, and usb 1.0 legacy PortPwrCtrlMask */ - desc->u.hs.DeviceRemovable[0] = 0; - desc->u.hs.DeviceRemovable[0] = ~0; - - return 0; -} - -static int admhc_get_hub_status(struct admhcd *ahcd, char *buf) -{ - struct usb_hub_status *hs = (struct usb_hub_status *)buf; - u32 t = admhc_read_rhdesc(ahcd); - u16 status, change; - - status = 0; - status |= (t & ADMHC_RH_LPS) ? HUB_STATUS_LOCAL_POWER : 0; - status |= (t & ADMHC_RH_OCI) ? HUB_STATUS_OVERCURRENT : 0; - - change = 0; - change |= (t & ADMHC_RH_LPSC) ? HUB_CHANGE_LOCAL_POWER : 0; - change |= (t & ADMHC_RH_OCIC) ? HUB_CHANGE_OVERCURRENT : 0; - - hs->wHubStatus = (__force __u16)cpu_to_hc16(ahcd, status); - hs->wHubChange = (__force __u16)cpu_to_hc16(ahcd, change); - - return 0; -} - -static int admhc_get_port_status(struct admhcd *ahcd, unsigned port, char *buf) -{ - struct usb_port_status *ps = (struct usb_port_status *)buf; - u32 t = admhc_read_portstatus(ahcd, port); - u16 status, change; - - status = 0; - status |= (t & ADMHC_PS_CCS) ? USB_PORT_STAT_CONNECTION : 0; - status |= (t & ADMHC_PS_PES) ? USB_PORT_STAT_ENABLE : 0; - status |= (t & ADMHC_PS_PSS) ? USB_PORT_STAT_SUSPEND : 0; - status |= (t & ADMHC_PS_POCI) ? USB_PORT_STAT_OVERCURRENT : 0; - status |= (t & ADMHC_PS_PRS) ? USB_PORT_STAT_RESET : 0; - status |= (t & ADMHC_PS_PPS) ? USB_PORT_STAT_POWER : 0; - status |= (t & ADMHC_PS_LSDA) ? USB_PORT_STAT_LOW_SPEED : 0; - - change = 0; - change |= (t & ADMHC_PS_CSC) ? USB_PORT_STAT_C_CONNECTION : 0; - change |= (t & ADMHC_PS_PESC) ? USB_PORT_STAT_C_ENABLE : 0; - change |= (t & ADMHC_PS_PSSC) ? USB_PORT_STAT_C_SUSPEND : 0; - change |= (t & ADMHC_PS_OCIC) ? USB_PORT_STAT_C_OVERCURRENT : 0; - change |= (t & ADMHC_PS_PRSC) ? USB_PORT_STAT_C_RESET : 0; - - ps->wPortStatus = (__force __u16)cpu_to_hc16(ahcd, status); - ps->wPortChange = (__force __u16)cpu_to_hc16(ahcd, change); - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_USB_OTG - -static int admhc_start_port_reset(struct usb_hcd *hcd, unsigned port) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - u32 status; - - if (!port) - return -EINVAL; - port--; - - /* start port reset before HNP protocol times out */ - status = admhc_read_portstatus(ahcd, port); - if (!(status & ADMHC_PS_CCS)) - return -ENODEV; - - /* khubd will finish the reset later */ - admhc_write_portstatus(ahcd, port, ADMHC_PS_PRS); - return 0; -} - -static void start_hnp(struct admhcd *ahcd); - -#else - -#define admhc_start_port_reset NULL - -#endif - -/*-------------------------------------------------------------------------*/ - - -/* See usb 7.1.7.5: root hubs must issue at least 50 msec reset signaling, - * not necessarily continuous ... to guard against resume signaling. - * The short timeout is safe for non-root hubs, and is backward-compatible - * with earlier Linux hosts. - */ -#ifdef CONFIG_USB_SUSPEND -#define PORT_RESET_MSEC 50 -#else -#define PORT_RESET_MSEC 10 -#endif - -/* this timer value might be vendor-specific ... */ -#define PORT_RESET_HW_MSEC 10 - -/* wrap-aware logic morphed from <linux/jiffies.h> */ -#define tick_before(t1, t2) ((s16)(((s16)(t1)) - ((s16)(t2))) < 0) - -/* called from some task, normally khubd */ -static inline int admhc_port_reset(struct admhcd *ahcd, unsigned port) -{ - u32 t; - - admhc_vdbg(ahcd, "reset port%d\n", port); - t = admhc_read_portstatus(ahcd, port); - if (!(t & ADMHC_PS_CCS)) - return -ENODEV; - - admhc_write_portstatus(ahcd, port, ADMHC_PS_SPR); - mdelay(10); - admhc_write_portstatus(ahcd, port, (ADMHC_PS_SPE | ADMHC_PS_CSC)); - mdelay(100); - - return 0; -} - -static inline int admhc_port_enable(struct admhcd *ahcd, unsigned port) -{ - u32 t; - - admhc_vdbg(ahcd, "enable port%d\n", port); - t = admhc_read_portstatus(ahcd, port); - if (!(t & ADMHC_PS_CCS)) - return -ENODEV; - - admhc_write_portstatus(ahcd, port, ADMHC_PS_SPE); - - return 0; -} - -static inline int admhc_port_disable(struct admhcd *ahcd, unsigned port) -{ - u32 t; - - admhc_vdbg(ahcd, "disable port%d\n", port); - t = admhc_read_portstatus(ahcd, port); - if (!(t & ADMHC_PS_CCS)) - return -ENODEV; - - admhc_write_portstatus(ahcd, port, ADMHC_PS_CPE); - - return 0; -} - -static inline int admhc_port_write(struct admhcd *ahcd, unsigned port, - u32 val) -{ -#ifdef ADMHC_VERBOSE_DEBUG - dbg_port_write(ahcd, "write", port, val); -#endif - admhc_write_portstatus(ahcd, port, val); - - return 0; -} - -static int admhc_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, - u16 wIndex, char *buf, u16 wLength) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - int ports = ahcd->num_ports; - int ret = 0; - - if (unlikely(!HCD_HW_ACCESSIBLE(hcd))) - return -ESHUTDOWN; - - switch (typeReq) { - case ClearHubFeature: - switch (wValue) { - case C_HUB_OVER_CURRENT: -#if 0 /* FIXME */ - admhc_writel(ahcd, ADMHC_RH_OCIC, - &ahcd->regs->roothub.status); -#endif - case C_HUB_LOCAL_POWER: - break; - default: - goto error; - } - break; - case ClearPortFeature: - if (!wIndex || wIndex > ports) - goto error; - wIndex--; - - switch (wValue) { - case USB_PORT_FEAT_ENABLE: - ret = admhc_port_disable(ahcd, wIndex); - break; - case USB_PORT_FEAT_SUSPEND: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_CPS); - break; - case USB_PORT_FEAT_POWER: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_CPP); - break; - case USB_PORT_FEAT_C_CONNECTION: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_CSC); - break; - case USB_PORT_FEAT_C_ENABLE: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_PESC); - break; - case USB_PORT_FEAT_C_SUSPEND: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_PSSC); - break; - case USB_PORT_FEAT_C_OVER_CURRENT: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_OCIC); - break; - case USB_PORT_FEAT_C_RESET: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_PRSC); - break; - default: - goto error; - } - break; - case GetHubDescriptor: - ret = admhc_get_hub_descriptor(ahcd, buf); - break; - case GetHubStatus: - ret = admhc_get_hub_status(ahcd, buf); - break; - case GetPortStatus: - if (!wIndex || wIndex > ports) - goto error; - wIndex--; - - ret = admhc_get_port_status(ahcd, wIndex, buf); - break; - case SetHubFeature: - switch (wValue) { - case C_HUB_OVER_CURRENT: - /* FIXME: this can be cleared, yes? */ - case C_HUB_LOCAL_POWER: - break; - default: - goto error; - } - break; - case SetPortFeature: - if (!wIndex || wIndex > ports) - goto error; - wIndex--; - - switch (wValue) { - case USB_PORT_FEAT_ENABLE: - ret = admhc_port_enable(ahcd, wIndex); - break; - case USB_PORT_FEAT_RESET: - ret = admhc_port_reset(ahcd, wIndex); - break; - case USB_PORT_FEAT_SUSPEND: -#ifdef CONFIG_USB_OTG - if (hcd->self.otg_port == (wIndex + 1) - && hcd->self.b_hnp_enable) - start_hnp(ahcd); - else -#endif - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_SPS); - break; - case USB_PORT_FEAT_POWER: - ret = admhc_port_write(ahcd, wIndex, ADMHC_PS_SPP); - break; - default: - goto error; - } - break; - - default: -error: - /* "protocol stall" on error */ - ret = -EPIPE; - } - - return ret; -} - |