diff options
author | Felix Fietkau <nbd@openwrt.org> | 2007-09-06 16:27:37 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2007-09-06 16:27:37 +0000 |
commit | 92558d67a463bfbb351d30e28648de03b635f024 (patch) | |
tree | a5d41b991a151e72663527a96fbc6c494565d65c /target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c | |
parent | e1dbce411cd2a3a067f387cee011cd889486a07d (diff) | |
download | upstream-92558d67a463bfbb351d30e28648de03b635f024.tar.gz upstream-92558d67a463bfbb351d30e28648de03b635f024.tar.bz2 upstream-92558d67a463bfbb351d30e28648de03b635f024.zip |
strip the kernel version suffix from target directories, except for brcm-2.4 (the -2.4 will be included in the board name here). CONFIG_LINUX_<ver>_<board> becomes CONFIG_TARGET_<board>, same for profiles.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c')
-rw-r--r-- | target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c | 996 |
1 files changed, 996 insertions, 0 deletions
diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c new file mode 100644 index 0000000000..4e88777287 --- /dev/null +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c @@ -0,0 +1,996 @@ +/* + * 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); |