static void b_peripheral(struct isp1301 *isp)
{
OTG_CTRL_REG = OTG_CTRL_REG & OTG_XCEIV_OUTPUTS;
usb_gadget_vbus_connect(isp->otg.gadget);
#ifdef CONFIG_USB_OTG
enable_vbus_draw(isp, 8);
otg_update_isp(isp);
#else
enable_vbus_draw(isp, 100);
/* UDC driver just set OTG_BSESSVLD */
isp1301_set_bits(isp, ISP1301_OTG_CONTROL_1, OTG1_DP_PULLUP);
isp1301_clear_bits(isp, ISP1301_OTG_CONTROL_1, OTG1_DP_PULLDOWN);
isp->otg.state = OTG_STATE_B_PERIPHERAL;
pr_debug(" --> b_peripheral\n");
dump_regs(isp, "2periph");
#endif
}
static void
isp1301_work(struct work_struct *work)
{
struct isp1301 *isp = container_of(work, struct isp1301, work);
int stop;
/* implicit lock: we're the only task using this device */
isp->working = 1;
do {
stop = test_bit(WORK_STOP, &isp->todo);
#ifdef CONFIG_USB_OTG
/* transfer state from otg engine to isp1301 */
if (test_and_clear_bit(WORK_UPDATE_ISP, &isp->todo)) {
otg_update_isp(isp);
put_device(&isp->client->dev);
}
#endif
/* transfer state from isp1301 to otg engine */
if (test_and_clear_bit(WORK_UPDATE_OTG, &isp->todo)) {
u8 stat = isp1301_clear_latch(isp);
isp_update_otg(isp, stat);
put_device(&isp->client->dev);
}
if (test_and_clear_bit(WORK_HOST_RESUME, &isp->todo)) {
u32 otg_ctrl;
/*
* skip A_WAIT_VRISE; hc transitions invisibly
* skip A_WAIT_BCON; same.
*/
switch (isp->otg.state) {
case OTG_STATE_A_WAIT_BCON:
case OTG_STATE_A_WAIT_VRISE:
isp->otg.state = OTG_STATE_A_HOST;
pr_debug(" --> a_host\n");
otg_ctrl = omap_readl(OTG_CTRL);
otg_ctrl |= OTG_A_BUSREQ;
otg_ctrl &= ~(OTG_BUSDROP|OTG_B_BUSREQ)
& OTG_CTRL_MASK;
omap_writel(otg_ctrl, OTG_CTRL);
break;
case OTG_STATE_B_WAIT_ACON:
isp->otg.state = OTG_STATE_B_HOST;
pr_debug(" --> b_host (acon)\n");
break;
case OTG_STATE_B_HOST:
case OTG_STATE_B_IDLE:
case OTG_STATE_A_IDLE:
break;
default:
pr_debug(" host resume in %s\n",
state_name(isp));
}
host_resume(isp);
// mdelay(10);
put_device(&isp->client->dev);
}
if (test_and_clear_bit(WORK_TIMER, &isp->todo)) {
#ifdef VERBOSE
dump_regs(isp, "timer");
if (!stop)
mod_timer(&isp->timer, jiffies + TIMER_JIFFIES);
#endif
put_device(&isp->client->dev);
}
if (isp->todo)
dev_vdbg(&isp->client->dev,
"work done, todo = 0x%lx\n",
isp->todo);
if (stop) {
dev_dbg(&isp->client->dev, "stop\n");
break;
}
} while (isp->todo);
isp->working = 0;
}
