diff options
| -rw-r--r-- | target/linux/adm5120-2.6/files/drivers/usb/host/adm5120-hcd.c | 162 |
1 files changed, 103 insertions, 59 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 index bd6f7a0aa..91ac431da 100644 --- 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 @@ -34,61 +34,63 @@ 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_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 2 -#define ADMHCD_HOST_EN 0x00000001 /* Host enable */ -#define ADMHCD_SW_INTREQ 0x00000002 /* request software int */ -#define ADMHCD_SW_RESET 0x00000008 /* Reset */ - -#define ADMHCD_INT_TD 0x00100000 /* TD completed */ -#define ADMHCD_INT_SW 0x20000000 /* software interrupt */ -#define ADMHCD_INT_FATAL 0x40000000 /* Fatal interrupt */ -#define ADMHCD_INT_ACT 0x80000000 /* Interrupt active */ - -#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_DMA_EN 0x00000004 /* enable dma engine */ - -#define ADMHCD_RST_ST 0x00 /* USB reset state */ -#define ADMHCD_RSM_ST 0x01 /* USB resume state */ -#define ADMHCD_OPR_ST 0x10 /* USB operational state */ -#define ADMHCD_SUS_ST 0x11 /* USB suspend state */ - -#define ADMHCD_NPS 0x00000200 /* No Power Switch */ -#define ADMHCD_PSM 0x00000100 /* Power switch mode */ -#define ADMHCD_OPCM 0x00000400 /* Over current protect mode */ -#define ADMHCD_NOCP 0x00000800 /* No over current protect mode */ -#define ADMHCD_LPSC 0x04000000 /* Local power switch change */ -#define ADMHCD_LPS 0x01000000 /* Local power switch/global power switch */ - -#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 */ - - struct admhcd_ed { /* Don't change first four, they used for DMA */ u32 control; @@ -700,6 +702,8 @@ static int admhcd_start(struct usb_hcd *hcd) struct admhcd *ahcd = hcd_to_admhcd(hcd); unsigned long flags; + printk(KERN_DEBUG PFX "calling admhcd_start\n"); + spin_lock_irqsave(&ahcd->lock, flags); /* Initialise the HCD registers */ @@ -708,8 +712,12 @@ static int admhcd_start(struct usb_hcd *hcd) admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_SW_RESET); - while (admhcd_reg_get(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); @@ -725,13 +733,17 @@ static int admhcd_start(struct usb_hcd *hcd) 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); - admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP); + /* 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); + + printk(KERN_DEBUG PFX "returning 0 from admhcd_start\n"); return 0; } @@ -776,7 +788,7 @@ static int admhcd_reset(struct usb_hcd *hcd) while (time_before_eq(jiffies, t)) { msleep(4); spin_lock_irq(&ahcd->lock); - val = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL) & ADMHCD_OPR_ST; + val = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL) & ADMHCD_STATE_RST; spin_unlock_irq(&ahcd->lock); if (val) break; @@ -814,7 +826,7 @@ static struct hc_driver adm5120_hc_driver = { .product_desc = "ADM5120 HCD", .hcd_priv_size = sizeof(struct admhcd), .irq = adm5120hcd_irq, - .flags = HCD_MEMORY|HCD_USB11, + .flags = HCD_USB11, .urb_enqueue = admhcd_urb_enqueue, .urb_dequeue = admhcd_urb_dequeue, .endpoint_disable = admhcd_endpoint_disable, @@ -838,54 +850,64 @@ static int __init adm5120hcd_probe(struct platform_device *pdev) 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 "no we won't dma\n"); + printk(KERN_DEBUG PFX "no we won't dma\n"); return -EINVAL; } - irq = platform_get_irq(pdev, 0); - data = platform_get_resource(pdev, IORESOURCE_MEM, 0); - 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, 2, hcd_name)) { + printk(KERN_DEBUG PFX "cannot request memory regions for the data resource\n"); err = -EBUSY; - goto out_unmap; + 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) + if (!hcd) { + printk(KERN_DEBUG PFX "unable to create the hcd\n"); + err = -ENOMEM; goto out_mem; + } hcd->rsrc_start = data->start; - hcd->rsrc_len = resource_len(data); - hcd->regs = (u32)data_reg; + hcd->rsrc_len = resource_len(data); + hcd->regs = data_reg; + ahcd = hcd_to_admhcd(hcd); + ahcd->data_reg = data_reg; + ahcd->base = (u32)data_reg; spin_lock_init(&ahcd->lock); INIT_LIST_HEAD(&ahcd->async); - ahcd->data_reg = data_reg; - ahcd->base = (u32)data_reg; - hcd->product_desc = "ADM5120 HCD"; err = usb_add_hcd(hcd, irq, IRQF_DISABLED); - if (err) + if (err) { + printk(KERN_DEBUG PFX "unable to add hcd\n"); goto out_dev; + } return 0; @@ -899,6 +921,25 @@ 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); @@ -916,8 +957,10 @@ static int __init_or_module adm5120hcd_remove(struct platform_device *pdev) static struct platform_driver adm5120hcd_driver = { .probe = adm5120hcd_probe, .remove = adm5120hcd_remove, + .suspend = adm5120hcd_suspend, + .remove = adm5120hcd_resume, .driver = { - .name = "adm5120-usbc", + .name = (char *)hcd_name, .owner = THIS_MODULE, }, }; @@ -944,8 +987,9 @@ static int __init adm5120hcd_init(void) } static void __exit adm5120hcd_exit(void) -{ +{ platform_driver_unregister(&adm5120hcd_driver); + printk(KERN_INFO PFX "driver unregistered\n"); } module_init(adm5120hcd_init); |