ARM i.MX ehci: factor out soc specific functions

Currently we have a mxc_initialize_usb_hw which is called on every
i.MX SoC. This function dispatches the different SoC types, which
is quite ugly. This patch moves the SoC specific USB initialization
to their correspondive mach directories.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 157 insertions, 1 deletions

diff --git a/arch/arm/mach-mx5/Makefile b/arch/arm/mach-mx5/Makefile
index 0d43be98e51..dc2728823fd 100644
--- a/arch/arm/mach-mx5/Makefile
+++ b/arch/arm/mach-mx5/Makefile
@@ -3,7 +3,7 @@
 #
 
 # Object file lists.
-obj-y   := cpu.o mm.o clock-mx51-mx53.o devices.o
+obj-y   := cpu.o mm.o clock-mx51-mx53.o devices.o ehci.o
 obj-$(CONFIG_SOC_IMX50) += mm-mx50.o
 
 obj-$(CONFIG_CPU_FREQ_IMX)    += cpu_op-mx51.o
diff --git a/arch/arm/mach-mx5/ehci.c b/arch/arm/mach-mx5/ehci.c
new file mode 100644
index 00000000000..7ce12c804a3
--- /dev/null
+++ b/arch/arm/mach-mx5/ehci.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#define MXC_OTG_OFFSET			0
+#define MXC_H1_OFFSET			0x200
+#define MXC_H2_OFFSET			0x400
+
+/* USB_CTRL */
+#define MXC_OTG_UCTRL_OWIE_BIT		(1 << 27)	/* OTG wakeup intr enable */
+#define MXC_OTG_UCTRL_OPM_BIT		(1 << 24)	/* OTG power mask */
+#define MXC_H1_UCTRL_H1UIE_BIT		(1 << 12)	/* Host1 ULPI interrupt enable */
+#define MXC_H1_UCTRL_H1WIE_BIT		(1 << 11)	/* HOST1 wakeup intr enable */
+#define MXC_H1_UCTRL_H1PM_BIT		(1 <<  8)		/* HOST1 power mask */
+
+/* USB_PHY_CTRL_FUNC */
+#define MXC_OTG_PHYCTRL_OC_DIS_BIT	(1 << 8)	/* OTG Disable Overcurrent Event */
+#define MXC_H1_OC_DIS_BIT		(1 << 5)	/* UH1 Disable Overcurrent Event */
+
+/* USBH2CTRL */
+#define MXC_H2_UCTRL_H2UIE_BIT		(1 << 8)
+#define MXC_H2_UCTRL_H2WIE_BIT		(1 << 7)
+#define MXC_H2_UCTRL_H2PM_BIT		(1 << 4)
+
+#define MXC_USBCMD_OFFSET		0x140
+
+/* USBCMD */
+#define MXC_UCMD_ITC_NO_THRESHOLD_MASK	(~(0xff << 16))	/* Interrupt Threshold Control */
+
+int mx51_initialize_usb_hw(int port, unsigned int flags)
+{
+	unsigned int v;
+	void __iomem *usb_base;
+	void __iomem *usbotg_base;
+	void __iomem *usbother_base;
+	int ret = 0;
+
+	usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
+	if (!usb_base) {
+		printk(KERN_ERR "%s(): ioremap failed\n", __func__);
+		return -ENOMEM;
+	}
+
+	switch (port) {
+	case 0:	/* OTG port */
+		usbotg_base = usb_base + MXC_OTG_OFFSET;
+		break;
+	case 1:	/* Host 1 port */
+		usbotg_base = usb_base + MXC_H1_OFFSET;
+		break;
+	case 2: /* Host 2 port */
+		usbotg_base = usb_base + MXC_H2_OFFSET;
+		break;
+	default:
+		printk(KERN_ERR"%s no such port %d\n", __func__, port);
+		ret = -ENOENT;
+		goto error;
+	}
+	usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
+
+	switch (port) {
+	case 0:	/*OTG port */
+		if (flags & MXC_EHCI_INTERNAL_PHY) {
+			v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+
+			if (flags & MXC_EHCI_POWER_PINS_ENABLED) {
+				/* OC/USBPWR is not used */
+				v |= MXC_OTG_PHYCTRL_OC_DIS_BIT;
+			} else {
+				/* OC/USBPWR is used */
+				v &= ~MXC_OTG_PHYCTRL_OC_DIS_BIT;
+			}
+			__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+
+			v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
+			if (flags & MXC_EHCI_WAKEUP_ENABLED)
+				v |= MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup enable */
+			else
+				v &= ~MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup disable */
+			if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+				v |= MXC_OTG_UCTRL_OPM_BIT;
+			else
+				v &= ~MXC_OTG_UCTRL_OPM_BIT;
+			__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
+		}
+		break;
+	case 1:	/* Host 1 */
+		/*Host ULPI */
+		v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
+		if (flags & MXC_EHCI_WAKEUP_ENABLED) {
+			/* HOST1 wakeup/ULPI intr enable */
+			v |= (MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);
+		} else {
+			/* HOST1 wakeup/ULPI intr disable */
+			v &= ~(MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);
+		}
+
+		if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+			v &= ~MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/
+		else
+			v |= MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/
+		__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
+
+		v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+		if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+			v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */
+		else
+			v |= MXC_H1_OC_DIS_BIT; /* OC is not used */
+		__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+
+		v = __raw_readl(usbotg_base + MXC_USBCMD_OFFSET);
+		if (flags & MXC_EHCI_ITC_NO_THRESHOLD)
+			/* Interrupt Threshold Control:Immediate (no threshold) */
+			v &= MXC_UCMD_ITC_NO_THRESHOLD_MASK;
+		__raw_writel(v, usbotg_base + MXC_USBCMD_OFFSET);
+		break;
+	case 2: /* Host 2 ULPI */
+		v = __raw_readl(usbother_base + MXC_USBH2CTRL_OFFSET);
+		if (flags & MXC_EHCI_WAKEUP_ENABLED) {
+			/* HOST1 wakeup/ULPI intr enable */
+			v |= (MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
+		} else {
+			/* HOST1 wakeup/ULPI intr disable */
+			v &= ~(MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
+		}
+
+		if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+			v &= ~MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
+		else
+			v |= MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
+		__raw_writel(v, usbother_base + MXC_USBH2CTRL_OFFSET);
+		break;
+	}
+
+error:
+	iounmap(usb_base);
+	return ret;
+}
+