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@xxxxxx>
---
arch/arm/mach-omap2/usb-host.c | 1 +
arch/arm/mach-omap2/usb.h | 1 +
drivers/mfd/omap-usb-host.c | 34 +++++++++++++++++++------------
include/linux/platform_data/usb-omap.h | 1 +
4 files changed, 24 insertions(+), 13 deletions(-)
diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
index 2e44e8a..ee8c473 100644
--- a/arch/arm/mach-omap2/usb-host.c
+++ b/arch/arm/mach-omap2/usb-host.c
@@ -504,6 +504,7 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
ohci_data.es2_compatibility = pdata->es2_compatibility;
usbhs_data.ehci_data = &ehci_data;
usbhs_data.ohci_data = &ohci_data;
+ usbhs_data.nports = pdata->nports;
if (cpu_is_omap34xx()) {
setup_ehci_io_mux(pdata->port_mode);
diff --git a/arch/arm/mach-omap2/usb.h b/arch/arm/mach-omap2/usb.h
index 9b986ea..7dc0f04 100644
--- a/arch/arm/mach-omap2/usb.h
+++ b/arch/arm/mach-omap2/usb.h
@@ -54,6 +54,7 @@
#define USBPHY_DATA_POLARITY (1 << 23)
struct usbhs_omap_board_data {
+ int nports;
enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS];
/* have to be valid if phy_reset is true and portx is in phy mode */
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 5edb828..710460d 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -497,19 +497,27 @@ 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++)
diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h
index ef65b67..57707c7 100644
--- a/include/linux/platform_data/usb-omap.h
+++ b/include/linux/platform_data/usb-omap.h
@@ -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];
struct ehci_hcd_omap_platform_data *ehci_data;
--
1.7.4.1
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