usb: r8a66597: Add support for RZ/A series
While the USB HW in the RZ/A is basically the same, there are some
differences from the original versions that were in the SH SoCs.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 6ef5190..28d2bc8 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -82,6 +82,7 @@
}
} while ((tmp & USBE) != USBE);
r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+#if !defined(CONFIG_RZA_USB)
r8a66597_mdfy(r8a66597, CONFIG_R8A66597_XTAL, XTAL, SYSCFG0);
i = 0;
@@ -94,6 +95,20 @@
return -1;
}
} while ((tmp & SCKE) != SCKE);
+#else
+ /*
+ * RZ/A Only:
+ * Bits XTAL(UCKSEL) and UPLLE in SYSCFG0 for USB0 controls both USB0
+ * and USB1, so we must always set the USB0 register
+ */
+#if (CONFIG_R8A66597_XTAL == 1)
+ setbits(le16, R8A66597_BASE0, XTAL);
+#endif
+ mdelay(1);
+ setbits(le16, R8A66597_BASE0, UPLLE);
+ mdelay(1);
+ r8a66597_bset(r8a66597, SUSPM, SUSPMODE0);
+#endif /* CONFIG_RZA_USB */
#endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
return 0;
@@ -101,6 +116,7 @@
static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
{
+#if !defined(CONFIG_RZA_USB)
r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
udelay(1);
#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
@@ -108,6 +124,15 @@
r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
r8a66597_bclr(r8a66597, USBE, SYSCFG0);
#endif
+#else
+ r8a66597_bclr(r8a66597, SUSPM, SUSPMODE0);
+
+ clrbits(le16, R8A66597_BASE0, UPLLE);
+ mdelay(1);
+ r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+ mdelay(1);
+
+#endif
}
static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
@@ -118,7 +143,9 @@
r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
+#if !defined(CONFIG_RZA_USB)
r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
+#endif
}
static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
@@ -148,7 +175,9 @@
if (ret < 0)
return ret;
+#if !defined(CONFIG_RZA_USB)
r8a66597_bset(r8a66597, CONFIG_R8A66597_LDRV & LDRV, PINCFG);
+#endif
r8a66597_bset(r8a66597, USBE, SYSCFG0);
r8a66597_bset(r8a66597, INTL, SOFCFG);
@@ -266,12 +295,30 @@
unsigned long setup_addr = USBREQ;
u16 intsts1;
int timeout = 3000;
+#if defined(CONFIG_RZA_USB)
+ u16 dcpctr;
+ int timeout2 = 10000;
+#endif
u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
r8a66597_write(r8a66597, make_devsel(devsel) |
(8 << dev->maxpacketsize), DCPMAXP);
r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
+#if defined(CONFIG_RZA_USB)
+ dcpctr = r8a66597_read(r8a66597, DCPCTR);
+ if ((dcpctr & PID) == PID_BUF) {
+ timeout2 = 10000;
+ while (!(dcpctr & BSTS)) {
+ dcpctr = r8a66597_read(r8a66597, DCPCTR);
+ if (timeout2-- < 0) {
+ printf("DCPCTR clear timeout!\n");
+ break;
+ }
+ }
+ }
+#endif
+
for (i = 0; i < 4; i++) {
r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
setup_addr += 2;