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usb: gadget: udc: atmel: Check fifo configuration values against device tree 

Check fifo configuration values against device tree values for endpoint fifo
in auto configuration mode (fifo_mode=0).

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Cristian Birsan 2017-04-03 10:19:51 +03:00 committed by Felipe Balbi
parent d7b2bff161
commit b378e3bc3b
1 changed files with 22 additions and 2 deletions
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24
drivers/usb/gadget/udc/atmel_usba_udc.c
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@ -2115,14 +2115,34 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
dev_err(&pdev->dev, "of_probe: fifo-size error(%d)\n", ret);
goto err;
}
ep->fifo_size = fifo_mode ? udc->fifo_cfg[i].fifo_size : val;
if (fifo_mode) {
if (val < udc->fifo_cfg[i].fifo_size) {
dev_warn(&pdev->dev,
"Using max fifo-size value from DT\n");
ep->fifo_size = val;
} else {
ep->fifo_size = udc->fifo_cfg[i].fifo_size;
}
} else {
ep->fifo_size = val;
}
ret = of_property_read_u32(pp, "atmel,nb-banks", &val);
if (ret) {
dev_err(&pdev->dev, "of_probe: nb-banks error(%d)\n", ret);
goto err;
}
ep->nr_banks = fifo_mode ? udc->fifo_cfg[i].nr_banks : val;
if (fifo_mode) {
if (val < udc->fifo_cfg[i].nr_banks) {
dev_warn(&pdev->dev,
"Using max nb-banks value from DT\n");
ep->nr_banks = val;
} else {
ep->nr_banks = udc->fifo_cfg[i].nr_banks;
}
} else {
ep->nr_banks = val;
}
ep->can_dma = of_property_read_bool(pp, "atmel,can-dma");
ep->can_isoc = of_property_read_bool(pp, "atmel,can-isoc");