+++ /dev/null
-/*
- * HCD driver for ADM5120 SoC
- *
- * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
- *
- * Based on the ADMtek 2.4 driver
- * (C) Copyright 2003 Junius Chen <juniusc@admtek.com.tw>
- * Which again was based on the ohci and uhci drivers.
- */
-
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/usb.h>
-#include <linux/platform_device.h>
-
-#include <asm/bootinfo.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-#include <asm/byteorder.h>
-#include <asm/mach-adm5120/adm5120_info.h>
-
-#include "../core/hcd.h"
-
-MODULE_DESCRIPTION("ADM5120 USB Host Controller Driver");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)");
-
-#define PFX "adm5120-hcd: "
-
-#define ADMHCD_REG_CONTROL 0x00
-#define ADMHCD_SW_RESET 0x00000008 /* Reset */
-#define ADMHCD_DMAA 0x00000004 /* DMA arbitration control */
-#define ADMHCD_SW_INTREQ 0x00000002 /* request software int */
-#define ADMHCD_HOST_EN 0x00000001 /* Host enable */
-#define ADMHCD_REG_INTSTATUS 0x04
-#define ADMHCD_INT_ACT 0x80000000 /* Interrupt active */
-#define ADMHCD_INT_FATAL 0x40000000 /* Fatal interrupt */
-#define ADMHCD_INT_SW 0x20000000 /* software interrupt */
-#define ADMHCD_INT_TD 0x00100000 /* TD completed */
-#define ADMHCD_FNO 0x00000800 /* Frame number overaflow */
-#define ADMHCD_SO 0x00000400 /* Scheduling overrun */
-#define ADMHCD_INSMI 0x00000200 /* Root hub status change */
-#define ADMHCD_BABI 0x00000100 /* Babble detected, host mode */
-#define ADMHCD_RESI 0x00000020 /* Resume detected */
-#define ADMHCD_SOFI 0x00000010 /* SOF transmitted/received, host mode */
-#define ADMHCD_REG_INTENABLE 0x08
-#define ADMHCD_INT_EN 0x80000000 /* Interrupt enable */
-#define ADMHCD_INTMASK 0x00000001 /* Interrupt mask */
-#define ADMHCD_REG_HOSTCONTROL 0x10
-#define ADMHCD_DMA_EN 0x00000004 /* USB host DMA enable */
-#define ADMHCD_STATE_MASK 0x00000003
-#define ADMHCD_STATE_RST 0x00000000 /* bus state reset */
-#define ADMHCD_STATE_RES 0x00000001 /* bus state resume */
-#define ADMHCD_STATE_OP 0x00000002 /* bus state operational */
-#define ADMHCD_STATE_SUS 0x00000003 /* bus state suspended */
-#define ADMHCD_REG_FMINTERVAL 0x18
-#define ADMHCD_REG_FMNUMBER 0x1c
-#define ADMHCD_REG_LSTHRESH 0x70
-#define ADMHCD_REG_RHDESCR 0x74
-#define ADMHCD_CRWE 0x20000000 /* Clear wakeup enable */
-#define ADMHCD_DRWE 0x10000000 /* Device remote wakeup enable */
-#define ADMHCD_HW_OCIC 0x08000000 /* Over current indication change */
-#define ADMHCD_LPSC 0x04000000 /* Local power switch change */
-#define ADMHCD_OCI 0x02000000 /* Over current indication */
-#define ADMHCD_LPS 0x01000000 /* Local power switch/global power switch */
-#define ADMHCD_NOCP 0x00000800 /* No over current protect mode */
-#define ADMHCD_OPCM 0x00000400 /* Over current protect mode */
-#define ADMHCD_NPS 0x00000200 /* No Power Switch */
-#define ADMHCD_PSM 0x00000100 /* Power switch mode */
-#define ADMHCD_REG_PORTSTATUS0 0x78
-#define ADMHCD_CCS 0x00000001 /* current connect status */
-#define ADMHCD_PES 0x00000002 /* port enable status */
-#define ADMHCD_PSS 0x00000004 /* port suspend status */
-#define ADMHCD_POCI 0x00000008 /* port overcurrent indicator */
-#define ADMHCD_PRS 0x00000010 /* port reset status */
-#define ADMHCD_PPS 0x00000100 /* port power status */
-#define ADMHCD_LSDA 0x00000200 /* low speed device attached */
-#define ADMHCD_CSC 0x00010000 /* connect status change */
-#define ADMHCD_PESC 0x00020000 /* enable status change */
-#define ADMHCD_PSSC 0x00040000 /* suspend status change */
-#define ADMHCD_OCIC 0x00080000 /* overcurrent change*/
-#define ADMHCD_PRSC 0x00100000 /* reset status change */
-#define ADMHCD_REG_PORTSTATUS1 0x7c
-#define ADMHCD_REG_HOSTHEAD 0x80
-
-#define ADMHCD_NUMPORTS 1
-#define ADMHCD_DESC_ALIGN 16
-
-struct admhcd_ed {
- /* Don't change first four, they used for DMA */
- u32 control;
- struct admhcd_td *tail;
- struct admhcd_td *head;
- struct admhcd_ed *next;
- /* the rest is for the driver only: */
- struct admhcd_td *cur;
- struct usb_host_endpoint *ep;
- struct urb *urb;
- struct admhcd_ed *real;
-} __attribute__ ((packed));
-
-#define ADMHCD_ED_EPSHIFT 7 /* Shift for endpoint number */
-#define ADMHCD_ED_INT 0x00000800 /* Is this an int endpoint */
-#define ADMHCD_ED_SPEED 0x00002000 /* Is it a high speed dev? */
-#define ADMHCD_ED_SKIP 0x00004000 /* Skip this ED */
-#define ADMHCD_ED_FORMAT 0x00008000 /* Is this an isoc endpoint */
-#define ADMHCD_ED_MAXSHIFT 16 /* Shift for max packet size */
-
-struct admhcd_td {
- /* Don't change first four, they are used for DMA */
- u32 control;
- u32 buffer;
- u32 buflen;
- struct admhcd_td *next;
- /* the rest is for the driver only: */
- struct urb *urb;
- struct admhcd_td *real;
-} __attribute__ ((packed));
-
-#define ADMHCD_TD_OWN 0x80000000
-#define ADMHCD_TD_TOGGLE 0x00000000
-#define ADMHCD_TD_DATA0 0x01000000
-#define ADMHCD_TD_DATA1 0x01800000
-#define ADMHCD_TD_OUT 0x00200000
-#define ADMHCD_TD_IN 0x00400000
-#define ADMHCD_TD_SETUP 0x00000000
-#define ADMHCD_TD_ISO 0x00010000
-#define ADMHCD_TD_R 0x00040000
-#define ADMHCD_TD_INTEN 0x00010000
-
-static int admhcd_td_err[16] = {
- 0, /* No */
- -EREMOTEIO, /* CRC */
- -EREMOTEIO, /* bit stuff */
- -EREMOTEIO, /* data toggle */
- -EPIPE, /* stall */
- -ETIMEDOUT, /* timeout */
- -EPROTO, /* pid err */
- -EPROTO, /* unexpected pid */
- -EREMOTEIO, /* data overrun */
- -EREMOTEIO, /* data underrun */
- -ETIMEDOUT, /* 1010 */
- -ETIMEDOUT, /* 1011 */
- -EREMOTEIO, /* buffer overrun */
- -EREMOTEIO, /* buffer underrun */
- -ETIMEDOUT, /* 1110 */
- -ETIMEDOUT, /* 1111 */
-};
-
-#define ADMHCD_TD_ERRMASK 0x38000000
-#define ADMHCD_TD_ERRSHIFT 27
-
-#define TD(td) ((struct admhcd_td *)(((u32)(td)) & ~(ADMHCD_DESC_ALIGN-1)))
-#define ED(ed) ((struct admhcd_ed *)(((u32)(ed)) & ~(ADMHCD_DESC_ALIGN-1)))
-
-struct admhcd {
- spinlock_t lock;
-
- /* Root hub registers */
- u32 rhdesca;
- u32 rhdescb;
- u32 rhstatus;
- u32 rhport[2];
-
- /* async schedule: control, bulk */
- struct list_head async;
- u32 base;
- u32 dma_en;
- unsigned long flags;
-};
-
-static inline struct admhcd *hcd_to_admhcd(struct usb_hcd *hcd)
-{
- return (struct admhcd *)(hcd->hcd_priv);
-}
-
-static inline struct usb_hcd *admhcd_to_hcd(struct admhcd *admhcd)
-{
- return container_of((void *)admhcd, struct usb_hcd, hcd_priv);
-}
-
-static char hcd_name[] = "adm5120-hcd";
-
-static u32 admhcd_reg_get(struct admhcd *ahcd, int reg)
-{
- return *(volatile u32 *)KSEG1ADDR(ahcd->base+reg);
-}
-
-static void admhcd_reg_set(struct admhcd *ahcd, int reg, u32 val)
-{
- *(volatile u32 *)KSEG1ADDR(ahcd->base+reg) = val;
-}
-
-static void admhcd_lock(struct admhcd *ahcd)
-{
- spin_lock_irqsave(&ahcd->lock, ahcd->flags);
- ahcd->dma_en = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL) &
- ADMHCD_DMA_EN;
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
-}
-
-static void admhcd_unlock(struct admhcd *ahcd)
-{
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL,
- ADMHCD_STATE_OP | ahcd->dma_en);
- spin_unlock_irqrestore(&ahcd->lock, ahcd->flags);
-}
-
-static struct admhcd_td *admhcd_td_alloc(struct admhcd_ed *ed, struct urb *urb)
-{
- struct admhcd_td *tdn, *td;
-
- tdn = kzalloc(sizeof(*tdn)+ADMHCD_DESC_ALIGN, GFP_ATOMIC);
- if (!tdn)
- return NULL;
-
- tdn->real = tdn;
- tdn = TD(KSEG1ADDR(tdn));
- if (ed->cur == NULL) {
- ed->cur = tdn;
- ed->head = tdn;
- ed->tail = tdn;
- td = tdn;
- } else {
- /* Supply back the old tail and link in new td as tail */
- td = TD(ed->tail);
- TD(ed->tail)->next = tdn;
- ed->tail = tdn;
- }
- td->urb = urb;
-
- return td;
-}
-
-static void admhcd_td_free(struct admhcd_ed *ed, struct urb *urb)
-{
- struct admhcd_td *td, **tdp;
-
- if (urb == NULL)
- ed->control |= ADMHCD_ED_SKIP;
- tdp = &ed->cur;
- td = ed->cur;
- do {
- if (td->urb == urb)
- break;
- tdp = &td->next;
- td = TD(td->next);
- } while (td);
- while (td && td->urb == urb) {
- *tdp = TD(td->next);
- kfree(td->real);
- td = *tdp;
- }
-}
-
-/* Find an endpoint's descriptor, if needed allocate a new one and link it
- in the DMA chain
- */
-static struct admhcd_ed *admhcd_get_ed(struct admhcd *ahcd,
- struct usb_host_endpoint *ep, struct urb *urb)
-{
- struct admhcd_ed *hosthead;
- struct admhcd_ed *found = NULL, *ed = NULL;
- unsigned int pipe = urb->pipe;
-
- admhcd_lock(ahcd);
- hosthead = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
- if (hosthead) {
- for (ed = hosthead;; ed = ED(ed->next)) {
- if (ed->ep == ep) {
- found = ed;
- break;
- }
- if (ED(ed->next) == hosthead)
- break;
- }
- }
- if (!found) {
- found = kzalloc(sizeof(*found)+ADMHCD_DESC_ALIGN, GFP_ATOMIC);
- if (!found)
- goto out;
- found->real = found;
- found->ep = ep;
- found = ED(KSEG1ADDR(found));
- found->control = usb_pipedevice(pipe) |
- (usb_pipeendpoint(pipe) << ADMHCD_ED_EPSHIFT) |
- (usb_pipeint(pipe) ? ADMHCD_ED_INT : 0) |
- (urb->dev->speed == USB_SPEED_FULL ? ADMHCD_ED_SPEED : 0) |
- (usb_pipeisoc(pipe) ? ADMHCD_ED_FORMAT : 0) |
- (usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)) << ADMHCD_ED_MAXSHIFT);
- /* Alloc first dummy td */
- admhcd_td_alloc(found, NULL);
- if (hosthead) {
- found->next = hosthead;
- ed->next = found;
- } else {
- found->next = found;
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)found);
- }
- }
-out:
- admhcd_unlock(ahcd);
- return found;
-}
-
-static struct admhcd_td *admhcd_td_fill(u32 control, struct admhcd_td *td,
- dma_addr_t data, int len)
-{
- td->buffer = data;
- td->buflen = len;
- td->control = control;
- return TD(td->next);
-}
-
-static void admhcd_ed_start(struct admhcd *ahcd, struct admhcd_ed *ed)
-{
- struct admhcd_td *td = ed->cur;
-
- if (ed->urb)
- return;
- if (td->urb) {
- ed->urb = td->urb;
- while (1) {
- td->control |= ADMHCD_TD_OWN;
- if (TD(td->next)->urb != td->urb) {
- td->buflen |= ADMHCD_TD_INTEN;
- break;
- }
- td = TD(td->next);
- }
- }
- ed->head = TD(ed->head);
- ahcd->dma_en |= ADMHCD_DMA_EN;
-}
-
-static irqreturn_t admhcd_irq(struct usb_hcd *hcd)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- u32 intstatus;
-
- intstatus = admhcd_reg_get(ahcd, ADMHCD_REG_INTSTATUS);
- if (intstatus & ADMHCD_INT_FATAL) {
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_FATAL);
- /* FIXME: handle fatal interrupts */
- }
-
- if (intstatus & ADMHCD_INT_SW) {
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_SW);
- /* FIXME: handle software interrupts */
- }
-
- if (intstatus & ADMHCD_INT_TD) {
- struct admhcd_ed *ed, *head;
-
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_TD);
-
- head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
- ed = head;
- if (ed) do {
- /* Is it a finished TD? */
- if (ed->urb && !(ed->cur->control & ADMHCD_TD_OWN)) {
- struct admhcd_td *td;
- int error;
-
- td = ed->cur;
- error = (td->control & ADMHCD_TD_ERRMASK) >>
- ADMHCD_TD_ERRSHIFT;
- ed->urb->status = admhcd_td_err[error];
- admhcd_td_free(ed, ed->urb);
- // Calculate real length!!!
- ed->urb->actual_length = ed->urb->transfer_buffer_length;
- ed->urb->hcpriv = NULL;
- usb_hcd_giveback_urb(hcd, ed->urb);
- ed->urb = NULL;
- }
- admhcd_ed_start(ahcd, ed);
- ed = ED(ed->next);
- } while (ed != head);
- }
-
- return IRQ_HANDLED;
-}
-
-static int admhcd_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
- struct urb *urb, gfp_t mem_flags)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- struct admhcd_ed *ed;
- struct admhcd_td *td;
- int size = 0, i, zero = 0, ret = 0;
- unsigned int pipe = urb->pipe, toggle = 0;
- dma_addr_t data = (dma_addr_t)urb->transfer_buffer;
- int data_len = urb->transfer_buffer_length;
-
- ed = admhcd_get_ed(ahcd, ep, urb);
- if (!ed)
- return -ENOMEM;
-
- switch(usb_pipetype(pipe)) {
- case PIPE_CONTROL:
- size = 2;
- case PIPE_INTERRUPT:
- case PIPE_BULK:
- default:
- size += urb->transfer_buffer_length / 4096;
- if (urb->transfer_buffer_length % 4096)
- size++;
- if (size == 0)
- size++;
- else if (urb->transfer_flags & URB_ZERO_PACKET &&
- !(urb->transfer_buffer_length %
- usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)))) {
- size++;
- zero = 1;
- }
- break;
- case PIPE_ISOCHRONOUS:
- size = urb->number_of_packets;
- break;
- }
-
- admhcd_lock(ahcd);
- /* Remember the first td */
- td = admhcd_td_alloc(ed, urb);
- if (!td) {
- ret = -ENOMEM;
- goto out;
- }
- /* Allocate additionall tds first */
- for (i = 1; i < size; i++) {
- if (admhcd_td_alloc(ed, urb) == NULL) {
- admhcd_td_free(ed, urb);
- ret = -ENOMEM;
- goto out;
- }
- }
-
- if (usb_gettoggle(urb->dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)))
- toggle = ADMHCD_TD_TOGGLE;
- else {
- toggle = ADMHCD_TD_DATA0;
- usb_settoggle(urb->dev, usb_pipeendpoint(pipe),
- usb_pipeout(pipe), 1);
- }
-
- switch(usb_pipetype(pipe)) {
- case PIPE_CONTROL:
- td = admhcd_td_fill(ADMHCD_TD_SETUP | ADMHCD_TD_DATA0,
- td, (dma_addr_t)urb->setup_packet, 8);
- while (data_len > 0) {
- td = admhcd_td_fill(ADMHCD_TD_DATA1
- | ADMHCD_TD_R |
- (usb_pipeout(pipe) ?
- ADMHCD_TD_OUT : ADMHCD_TD_IN), td,
- data, data_len % 4097);
- data_len -= 4096;
- }
- admhcd_td_fill(ADMHCD_TD_DATA1 | (usb_pipeout(pipe) ?
- ADMHCD_TD_IN : ADMHCD_TD_OUT), td,
- data, 0);
- break;
- case PIPE_INTERRUPT:
- case PIPE_BULK:
- //info ok for interrupt?
- i = 0;
- while(data_len > 4096) {
- td = admhcd_td_fill((usb_pipeout(pipe) ?
- ADMHCD_TD_OUT :
- ADMHCD_TD_IN | ADMHCD_TD_R) |
- (i ? ADMHCD_TD_TOGGLE : toggle), td,
- data, 4096);
- data += 4096;
- data_len -= 4096;
- i++;
- }
- td = admhcd_td_fill((usb_pipeout(pipe) ?
- ADMHCD_TD_OUT : ADMHCD_TD_IN) |
- (i ? ADMHCD_TD_TOGGLE : toggle), td, data, data_len);
- i++;
- if (zero)
- admhcd_td_fill((usb_pipeout(pipe) ?
- ADMHCD_TD_OUT : ADMHCD_TD_IN) |
- (i ? ADMHCD_TD_TOGGLE : toggle), td, 0, 0);
- break;
- case PIPE_ISOCHRONOUS:
- for (i = 0; i < urb->number_of_packets; i++) {
- td = admhcd_td_fill(ADMHCD_TD_ISO |
- ((urb->start_frame + i) & 0xffff), td,
- data + urb->iso_frame_desc[i].offset,
- urb->iso_frame_desc[i].length);
- }
- break;
- }
- urb->hcpriv = ed;
- admhcd_ed_start(ahcd, ed);
-out:
- admhcd_unlock(ahcd);
- return ret;
-}
-
-static int admhcd_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- struct admhcd_ed *ed;
-
- admhcd_lock(ahcd);
-
- ed = urb->hcpriv;
- if (ed && ed->urb != urb)
- admhcd_td_free(ed, urb);
-
- admhcd_unlock(ahcd);
- return 0;
-}
-
-static void admhcd_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- struct admhcd_ed *ed, *edt, *head;
-
- admhcd_lock(ahcd);
-
- head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
- if (!head)
- goto out;
- for (ed = head; ED(ed->next) != head; ed = ED(ed->next))
- if (ed->ep == ep)
- break;
- if (ed->ep != ep)
- goto out;
- while (ed->cur)
- admhcd_td_free(ed, ed->cur->urb);
- if (head == ed) {
- if (ED(ed->next) == ed) {
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0);
- ahcd->dma_en = 0;
- goto out_free;
- }
- head = ED(ed->next);
- for (edt = head; ED(edt->next) != head; edt = ED(edt->next));
- edt->next = ED(ed->next);
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)ed->next);
- goto out_free;
- }
- for (edt = head; edt->next != ed; edt = edt->next);
- edt->next = ed->next;
-
-out_free:
- kfree(ed->real);
-out:
- admhcd_unlock(ahcd);
-}
-
-static int admhcd_get_frame_number(struct usb_hcd *hcd)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
-
- return admhcd_reg_get(ahcd, ADMHCD_REG_FMNUMBER) & 0x0000ffff;
-}
-
-static int admhcd_hub_status_data(struct usb_hcd *hcd, char *buf)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- int port;
-
- *buf = 0;
- for (port = 0; port < ADMHCD_NUMPORTS; port++) {
- if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4) &
- (ADMHCD_CSC | ADMHCD_PESC | ADMHCD_PSSC | ADMHCD_OCIC |
- ADMHCD_PRSC))
- *buf |= (1 << (port + 1));
- }
- return !!*buf;
-}
-
-static __u8 root_hub_hub_des[] = {
- 0x09, /* __u8 bLength; */
- 0x29, /* __u8 bDescriptorType; Hub-descriptor */
- 0x02, /* __u8 bNbrPorts; */
- 0x0a, 0x00, /* __u16 wHubCharacteristics; */
- 0x01, /* __u8 bPwrOn2pwrGood; 2ms */
- 0x00, /* __u8 bHubContrCurrent; 0mA */
- 0x00, /* __u8 DeviceRemovable; */
- 0xff, /* __u8 PortPwrCtrlMask; */
-};
-
-static int admhcd_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
- u16 wIndex, char *buf, u16 wLength)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- int retval = 0, len;
- unsigned int port = wIndex -1;
-
- switch (typeReq) {
-
- case GetHubStatus:
- *(__le32 *)buf = cpu_to_le32(0);
- break;
- case GetPortStatus:
- if (port >= ADMHCD_NUMPORTS)
- goto err;
- *(__le32 *)buf = cpu_to_le32(
- admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4));
- break;
- case SetHubFeature: /* We don't implement these */
- case ClearHubFeature:
- switch (wValue) {
- case C_HUB_OVER_CURRENT:
- case C_HUB_LOCAL_POWER:
- break;
- default:
- goto err;
- }
- case SetPortFeature:
- if (port >= ADMHCD_NUMPORTS)
- goto err;
-
- switch (wValue) {
- case USB_PORT_FEAT_SUSPEND:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PSS);
- break;
- case USB_PORT_FEAT_RESET:
- if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4)
- & ADMHCD_CCS) {
- admhcd_reg_set(ahcd,
- ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PRS | ADMHCD_CSC);
- mdelay(50);
- admhcd_reg_set(ahcd,
- ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PES | ADMHCD_CSC);
- }
- break;
- case USB_PORT_FEAT_POWER:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PPS);
- break;
- default:
- goto err;
- }
- break;
- case ClearPortFeature:
- if (port >= ADMHCD_NUMPORTS)
- goto err;
-
- switch (wValue) {
- case USB_PORT_FEAT_ENABLE:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_CCS);
- break;
- case USB_PORT_FEAT_C_ENABLE:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PESC);
- break;
- case USB_PORT_FEAT_SUSPEND:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_POCI);
- break;
- case USB_PORT_FEAT_C_SUSPEND:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PSSC);
- case USB_PORT_FEAT_POWER:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_LSDA);
- break;
- case USB_PORT_FEAT_C_CONNECTION:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_CSC);
- break;
- case USB_PORT_FEAT_C_OVER_CURRENT:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_OCIC);
- break;
- case USB_PORT_FEAT_C_RESET:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PRSC);
- break;
- default:
- goto err;
- }
- break;
- case GetHubDescriptor:
- len = min_t(unsigned int, sizeof(root_hub_hub_des), wLength);
- memcpy(buf, root_hub_hub_des, len);
- break;
- default:
-err:
- retval = -EPIPE;
- }
-
- return retval;
-}
-
-static int admhcd_start(struct usb_hcd *hcd)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- unsigned long flags;
-
- spin_lock_irqsave(&ahcd->lock, flags);
-
- /* Initialise the HCD registers */
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
- mdelay(10);
-
- admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_SW_RESET);
-
- while (admhcd_reg_get(ahcd, ADMHCD_REG_CONTROL) & ADMHCD_SW_RESET) {
- printk(KERN_WARNING PFX "waiting for reset to complete\n");
- mdelay(1);
- }
-
- //hcd->uses_new_polling = 1;
-
- /* Enable USB host mode */
- admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_HOST_EN);
-
- /* Set host specific settings */
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0x00000000);
- admhcd_reg_set(ahcd, ADMHCD_REG_FMINTERVAL, 0x20002edf);
- admhcd_reg_set(ahcd, ADMHCD_REG_LSTHRESH, 0x628);
-
- /* Set interrupts */
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, ADMHCD_INT_ACT |
- ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_ACT |
- ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
-
- /* Power on all ports */
- admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, ADMHCD_NPS | ADMHCD_LPSC);
-
- /* HCD is now operationnal */
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
-
- hcd->state = HC_STATE_RUNNING;
-
- spin_unlock_irqrestore(&ahcd->lock, flags);
-
- return 0;
-}
-
-static int admhcd_sw_reset(struct admhcd *ahcd)
-{
- int retries = 15;
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&ahcd->lock, flags);
-
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
- mdelay(10);
-
- admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_SW_RESET);
-
- while (--retries) {
- mdelay(1);
- if (!(admhcd_reg_get(ahcd, ADMHCD_REG_CONTROL) & ADMHCD_SW_RESET))
- break;
- }
- if (!retries) {
- printk(KERN_WARNING "%s: software reset timeout\n", hcd_name);
- ret = -ETIME;
- }
- spin_unlock_irqrestore(&ahcd->lock, flags);
- return ret;
-}
-
-static int admhcd_reset(struct usb_hcd *hcd)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- u32 state = 0;
- int ret, timeout = 15; /* ms */
- unsigned long t;
-
- ret = admhcd_sw_reset(ahcd);
- if (ret)
- return ret;
-
- t = jiffies + msecs_to_jiffies(timeout);
- do {
- spin_lock_irq(&ahcd->lock);
- state = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL);
- spin_unlock_irq(&ahcd->lock);
- state &= ADMHCD_STATE_MASK;
- if (state == ADMHCD_STATE_RST)
- break;
- msleep(4);
- } while (time_before_eq(jiffies, t));
-
- if (state != ADMHCD_STATE_RST) {
- printk(KERN_WARNING "%s: device not ready after %dms\n",
- hcd_name, timeout);
- ret = -ENODEV;
- }
-
- return ret;
-}
-
-static void admhcd_stop(struct usb_hcd *hcd)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- unsigned long flags;
- u32 val;
-
- spin_lock_irqsave(&ahcd->lock, flags);
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
-
- /* Set global control of power for ports */
- val = admhcd_reg_get(ahcd, ADMHCD_REG_RHDESCR);
- val &= (~ADMHCD_PSM | ADMHCD_LPS);
- admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, val);
-
- spin_unlock_irqrestore(&ahcd->lock, flags);
-
- /* Ask for software reset */
- admhcd_sw_reset(ahcd);
-}
-
-
-static struct hc_driver adm5120_hc_driver = {
- .description = hcd_name,
- .product_desc = "ADM5120 HCD",
- .hcd_priv_size = sizeof(struct admhcd),
- .irq = admhcd_irq,
- .flags = HCD_USB11,
- .urb_enqueue = admhcd_urb_enqueue,
- .urb_dequeue = admhcd_urb_dequeue,
- .endpoint_disable = admhcd_endpoint_disable,
- .get_frame_number = admhcd_get_frame_number,
- .hub_status_data = admhcd_hub_status_data,
- .hub_control = admhcd_hub_control,
- .start = admhcd_start,
- .stop = admhcd_stop,
- .reset = admhcd_reset,
-};
-
-#define resource_len(r) (((r)->end - (r)->start) + 1)
-
-static int __init adm5120hcd_probe(struct platform_device *pdev)
-{
- struct usb_hcd *hcd;
- struct admhcd *ahcd;
- struct resource *data;
- void __iomem *data_reg;
-
- int err = 0, irq;
-
- if (pdev->num_resources < 2) {
- printk(KERN_WARNING PFX "not enough resources\n");
- err = -ENODEV;
- goto out;
- }
-
- irq = platform_get_irq(pdev, 0);
- data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
- if (pdev->dev.dma_mask) {
- printk(KERN_DEBUG PFX "no we won't dma\n");
- return -EINVAL;
- }
-
- if (!data || irq < 0) {
- printk(KERN_DEBUG PFX "either IRQ or data resource is invalid\n");
- err = -ENODEV;
- goto out;
- }
-
- if (!request_mem_region(data->start, resource_len(data), hcd_name)) {
- printk(KERN_DEBUG PFX "cannot request memory regions for the data resource\n");
- err = -EBUSY;
- goto out;
- }
-
- data_reg = ioremap(data->start, resource_len(data));
- if (data_reg == NULL) {
- printk(KERN_DEBUG PFX "unable to ioremap\n");
- err = -ENOMEM;
- goto out_mem;
- }
-
- hcd = usb_create_hcd(&adm5120_hc_driver, &pdev->dev, pdev->dev.bus_id);
- if (!hcd) {
- printk(KERN_DEBUG PFX "unable to create the hcd\n");
- err = -ENOMEM;
- goto out_unmap;
- }
-
- hcd->rsrc_start = data->start;
- hcd->rsrc_len = resource_len(data);
- hcd->regs = data_reg;
-
- ahcd = hcd_to_admhcd(hcd);
- ahcd->base = (u32)data_reg;
-
- spin_lock_init(&ahcd->lock);
- INIT_LIST_HEAD(&ahcd->async);
-
- hcd->product_desc = "ADM5120 HCD";
-
- err = usb_add_hcd(hcd, irq, IRQF_DISABLED);
- if (err) {
- printk(KERN_DEBUG PFX "unable to add hcd\n");
- goto out_dev;
- }
-
- return 0;
-
-out_dev:
- usb_put_hcd(hcd);
-out_unmap:
- iounmap(data_reg);
-out_mem:
- release_mem_region(data->start, resource_len(data));
-out:
- return err;
-}
-
-#ifdef CONFIG_PM
-static int adm5120hcd_suspend(struct platform_device *pdev, pm_message_t state)
-{
- pdev->dev.power.power_state = state;
- mdelay(1);
- return 0;
-}
-
-static int adm5120hcd_resume(struct platform_device *pdev, pm_message_t state)
-{
- pdev->dev.power.power_state = PMSG_ON;
- mdelay(1);
- return 0;
-}
-#else
-#define adm5120hcd_suspend NULL
-#define adm5120hcd_resume NULL
-#endif
-
-static int __init_or_module adm5120hcd_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct admhcd *ahcd;
-
- if (!hcd)
- return 0;
- ahcd = hcd_to_admhcd(hcd);
- usb_remove_hcd(hcd);
-
- usb_put_hcd(hcd);
- return 0;
-}
-
-static struct platform_driver adm5120hcd_driver = {
- .probe = adm5120hcd_probe,
- .remove = adm5120hcd_remove,
- .suspend = adm5120hcd_suspend,
- .remove = adm5120hcd_resume,
- .driver = {
- .name = (char *)hcd_name,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init adm5120hcd_init(void)
-{
- int ret;
-
- if (usb_disabled()) {
- printk(KERN_DEBUG PFX "USB support is disabled\n");
- return -ENODEV;
- }
-
- if (mips_machgroup != MACH_GROUP_ADM5120) {
- printk(KERN_DEBUG PFX "unsupported machine group\n");
- return -ENODEV;
- }
-
- ret = platform_driver_register(&adm5120hcd_driver);
- if (ret == 0)
- printk(KERN_INFO PFX "registered\n");
-
- return ret;
-}
-
-static void __exit adm5120hcd_exit(void)
-{
- platform_driver_unregister(&adm5120hcd_driver);
- printk(KERN_INFO PFX "driver unregistered\n");
-}
-
-module_init(adm5120hcd_init);
-module_exit(adm5120hcd_exit);
projects / openwrt / svn-archive / archive.git / blobdiff