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mfd: omap-usb-host: override number of ports from platform data

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Both OMAP4 and 5 exhibit the same revision ID in the REVISION register
but they have different number of ports i.e. 2 and 3 respectively.
So we can't rely on REVISION register for number of ports on OMAP5
and depend on platform data (or device tree) instead.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Roger Quadros 2012-11-08 19:18:08 +02:00
parent d7eaf86610
commit ccac71a7f0
2 changed files with 22 additions and 13 deletions
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34
drivers/mfd/omap-usb-host.c
View File

@ -493,19 +493,27 @@ static int usbhs_omap_probe(struct platform_device *pdev)
*/
pm_runtime_put_sync(dev);
switch (omap->usbhs_rev) {
case OMAP_USBHS_REV1:
omap->nports = 3;
break;
case OMAP_USBHS_REV2:
omap->nports = 2;
break;
default:
omap->nports = OMAP3_HS_USB_PORTS;
dev_dbg(dev,
"USB HOST Rev : 0x%d not recognized, assuming %d ports\n",
omap->usbhs_rev, omap->nports);
break;
/*
* If platform data contains nports then use that
* else make out number of ports from USBHS revision
*/
if (pdata->nports) {
omap->nports = pdata->nports;
} else {
switch (omap->usbhs_rev) {
case OMAP_USBHS_REV1:
omap->nports = 3;
break;
case OMAP_USBHS_REV2:
omap->nports = 2;
break;
default:
omap->nports = OMAP3_HS_USB_PORTS;
dev_dbg(dev,
"USB HOST Rev:0x%d not recognized, assuming %d ports\n",
omap->usbhs_rev, omap->nports);
break;
}
}
for (i = 0; i < omap->nports; i++)

1
include/linux/platform_data/usb-omap.h
View File

@ -55,6 +55,7 @@ struct ohci_hcd_omap_platform_data {
};
struct usbhs_omap_platform_data {
int nports;
enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS];
int reset_gpio_port[OMAP3_HS_USB_PORTS];
struct regulator *regulator[OMAP3_HS_USB_PORTS];