omap1: omap_udc: Add clocking and disable vbus sense for omap7xx

The l3_ocpi_ck clock is needed on omap7xx processors for USB.
Additionally, bit 8 of the SOFT_REQ_REG needs to be enabled for
the usb_dc_ck on omap7xx, which is a different bit than that
of the omap16xx-defined clock of the same name.

I added a provision for the usb_dc_ck and l3_ocpi_ck clocks as
dc_clk and hhc_clk, respectively, for omap7xx CPUs.  Additionally,
I added a check in machine_without_vbus_sense for all omap7xx
devices, as presently I know of no omap7xx-based devices that
have vbus sense, and it made more sense to me to use a cpu check
here than to spell out each machine one at a time.  Finally, DMA
is disabled for omap7xx, as it causes problems with these chips.

Cc: linux-usb@vger.kernel.org
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 14 insertions, 6 deletions

diff --git a/arch/arm/plat-omap/usb.c b/arch/arm/plat-omap/usb.c
index 0ea1e0beb45..51033a4503c 100644
--- a/arch/arm/plat-omap/usb.c
+++ b/arch/arm/plat-omap/usb.c
@@ -159,11 +159,14 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device)
 		 *  - OTG support on this port not yet written
 		 */
 
-		l = omap_readl(USB_TRANSCEIVER_CTRL);
-		l &= ~(7 << 4);
-		if (!is_device)
-			l |= (3 << 1);
-		omap_writel(l, USB_TRANSCEIVER_CTRL);
+		/* Don't do this for omap7xx -- it causes USB to not work correctly */
+		if (!cpu_is_omap7xx()) {
+			l = omap_readl(USB_TRANSCEIVER_CTRL);
+			l &= ~(7 << 4);
+			if (!is_device)
+				l |= (3 << 1);
+			omap_writel(l, USB_TRANSCEIVER_CTRL);
+		}
 
 		return 3 << 16;
 	}
@@ -603,7 +606,12 @@ omap_otg_init(struct omap_usb_config *config)
 	if (config->otg || config->register_dev) {
 		syscon &= ~DEV_IDLE_EN;
 		udc_device.dev.platform_data = config;
-		/* FIXME patch IRQ numbers for omap730 */
+		/* IRQ numbers for omap7xx */
+		if(cpu_is_omap7xx()) {
+			udc_resources[1].start = INT_7XX_USB_GENI;
+			udc_resources[2].start = INT_7XX_USB_NON_ISO;
+			udc_resources[3].start = INT_7XX_USB_ISO;
+		}
 		status = platform_device_register(&udc_device);
 		if (status)
 			pr_debug("can't register UDC device, %d\n", status);