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Fixup the hcd driver, add a start/stop/reset/sw_reset functions, should allow it to basically run

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SVN-Revision: 8078
This commit is contained in:
Florian Fainelli 2007-07-20 16:26:39 +00:00
parent e58d9626f2
commit c6542df5fe
1 changed files with 137 additions and 42 deletions
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179
target/linux/adm5120-2.6/files/drivers/usb/host/adm5120-hcd.c
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@ -63,8 +63,17 @@ MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)");
#define ADMHCD_STATE_SUS 0x00000003 /* bus state suspended */
#define ADMHCD_DMA_EN 0x00000004 /* enable dma engine */
#define ADMHCD_NPS 0x00000020 /* No Power Switch */
#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 */
@ -150,7 +159,6 @@ static int admhcd_td_err[16] = {
struct admhcd {
spinlock_t lock;
void __iomem *addr_reg;
void __iomem *data_reg;
/* Root hub registers */
u32 rhdesca;
@ -687,18 +695,135 @@ err:
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)
mdelay(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);
admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, ADMHCD_NPS | ADMHCD_LPSC);
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 val = 0;
int ret, timeout = 15; /* ms */
unsigned long t;
ret = admhcd_sw_reset(ahcd);
if (ret)
return ret;
t = jiffies + msecs_to_jiffies(timeout);
while (time_before_eq(jiffies, t)) {
msleep(4);
spin_lock_irq(&ahcd->lock);
val = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL) & ADMHCD_OPR_ST;
spin_unlock_irq(&ahcd->lock);
if (val)
break;
}
if (!val) {
printk(KERN_WARNING "Device not ready after %dms\n", 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 = adm5120hcd_irq,
.flags = HCD_USB11,
.flags = HCD_MEMORY|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)
@ -707,13 +832,12 @@ static int __init adm5120hcd_probe(struct platform_device *pdev)
{
struct usb_hcd *hcd;
struct admhcd *ahcd;
struct resource *addr, *data;
void __iomem *addr_reg;
struct resource *data;
void __iomem *data_reg;
int err = 0, irq;
if (pdev->num_resources < 3) {
if (pdev->num_resources < 2) {
err = -ENODEV;
goto out;
}
@ -725,23 +849,12 @@ static int __init adm5120hcd_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
addr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!addr || !data || irq < 0) {
if (!data || irq < 0) {
err = -ENODEV;
goto out;
}
if (!request_mem_region(addr->start, 2, hcd_name)) {
err = -EBUSY;
goto out;
}
addr_reg = ioremap(addr->start, resource_len(addr));
if (addr_reg == NULL) {
err = -ENOMEM;
goto out_mem;
}
if (!request_mem_region(data->start, 2, hcd_name)) {
err = -EBUSY;
goto out_unmap;
@ -757,37 +870,19 @@ static int __init adm5120hcd_probe(struct platform_device *pdev)
if (!hcd)
goto out_mem;
hcd->rsrc_start = addr->start;
hcd->rsrc_start = data->start;
hcd->rsrc_len = resource_len(data);
hcd->regs = (u32)data_reg;
ahcd = hcd_to_admhcd(hcd);
spin_lock_init(&ahcd->lock);
INIT_LIST_HEAD(&ahcd->async);
ahcd->data_reg = data_reg;
ahcd->addr_reg = addr_reg;
ahcd->base = (u32)data_reg;
hcd->product_desc = "ADM5120 HCD";
/* 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)
mdelay(1);
admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_HOST_EN);
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0x00000000);
admhcd_reg_set(ahcd, ADMHCD_REG_FMINTERVAL, 0x20002edf);
admhcd_reg_set(ahcd, ADMHCD_REG_LSTHRESH, 0x628);
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);
admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, ADMHCD_NPS | ADMHCD_LPSC);
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
err = usb_add_hcd(hcd, irq, IRQF_DISABLED);
if (err)
goto out_dev;
@ -797,9 +892,9 @@ static int __init adm5120hcd_probe(struct platform_device *pdev)
out_dev:
usb_put_hcd(hcd);
out_unmap:
iounmap(addr_reg);
iounmap(data_reg);
out_mem:
release_mem_region(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start);
release_mem_region(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start +1);
out:
return err;
}