diff options
Diffstat (limited to 'target/linux/adm5120-2.6/files/drivers/usb')
| -rw-r--r-- | target/linux/adm5120-2.6/files/drivers/usb/host/adm5120-hcd.c | 996 |
1 files changed, 0 insertions, 996 deletions
diff --git a/target/linux/adm5120-2.6/files/drivers/usb/host/adm5120-hcd.c b/target/linux/adm5120-2.6/files/drivers/usb/host/adm5120-hcd.c deleted file mode 100644 index 4e8877728..000000000 --- a/target/linux/adm5120-2.6/files/drivers/usb/host/adm5120-hcd.c +++ /dev/null @@ -1,996 +0,0 @@ -/* - * 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); |