omap: Move omap2 FS USB platform init code into mach-omap2/usb-fs.c

Move omap2 FS USB platform init code into mach-omap2/usb-fs.c. This will
allow further work later on to use omap hwmod for initializing the
device.

Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 345 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/usb-fs.c b/arch/arm/mach-omap2/usb-fs.c
new file mode 100644
index 000000000000..f63e5766b6bc
--- /dev/null
+++ b/arch/arm/mach-omap2/usb-fs.c
@@ -0,0 +1,345 @@
+/*
+ * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
+ *
+ * Copyright (C) 2004 Texas Instruments, 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/irq.h>
+
+#include <plat/control.h>
+#include <plat/mux.h>
+#include <plat/usb.h>
+#include <plat/board.h>
+
+#define INT_USB_IRQ_GEN		INT_24XX_USB_IRQ_GEN
+#define INT_USB_IRQ_NISO	INT_24XX_USB_IRQ_NISO
+#define INT_USB_IRQ_ISO		INT_24XX_USB_IRQ_ISO
+#define INT_USB_IRQ_HGEN	INT_24XX_USB_IRQ_HGEN
+#define INT_USB_IRQ_OTG		INT_24XX_USB_IRQ_OTG
+
+#if defined(CONFIG_ARCH_OMAP2)
+
+#ifdef	CONFIG_USB_GADGET_OMAP
+
+static struct resource udc_resources[] = {
+	/* order is significant! */
+	{		/* registers */
+		.start		= UDC_BASE,
+		.end		= UDC_BASE + 0xff,
+		.flags		= IORESOURCE_MEM,
+	}, {		/* general IRQ */
+		.start		= INT_USB_IRQ_GEN,
+		.flags		= IORESOURCE_IRQ,
+	}, {		/* PIO IRQ */
+		.start		= INT_USB_IRQ_NISO,
+		.flags		= IORESOURCE_IRQ,
+	}, {		/* SOF IRQ */
+		.start		= INT_USB_IRQ_ISO,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 udc_dmamask = ~(u32)0;
+
+static struct platform_device udc_device = {
+	.name		= "omap_udc",
+	.id		= -1,
+	.dev = {
+		.dma_mask		= &udc_dmamask,
+		.coherent_dma_mask	= 0xffffffff,
+	},
+	.num_resources	= ARRAY_SIZE(udc_resources),
+	.resource	= udc_resources,
+};
+
+static inline void udc_device_init(struct omap_usb_config *pdata)
+{
+	pdata->udc_device = &udc_device;
+}
+
+#else
+
+static inline void udc_device_init(struct omap_usb_config *pdata)
+{
+}
+
+#endif
+
+#if	defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
+
+/* The dmamask must be set for OHCI to work */
+static u64 ohci_dmamask = ~(u32)0;
+
+static struct resource ohci_resources[] = {
+	{
+		.start	= OMAP_OHCI_BASE,
+		.end	= OMAP_OHCI_BASE + 0xff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= INT_USB_IRQ_HGEN,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device ohci_device = {
+	.name			= "ohci",
+	.id			= -1,
+	.dev = {
+		.dma_mask		= &ohci_dmamask,
+		.coherent_dma_mask	= 0xffffffff,
+	},
+	.num_resources	= ARRAY_SIZE(ohci_resources),
+	.resource		= ohci_resources,
+};
+
+static inline void ohci_device_init(struct omap_usb_config *pdata)
+{
+	pdata->ohci_device = &ohci_device;
+}
+
+#else
+
+static inline void ohci_device_init(struct omap_usb_config *pdata)
+{
+}
+
+#endif
+
+#if	defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
+
+static struct resource otg_resources[] = {
+	/* order is significant! */
+	{
+		.start		= OTG_BASE,
+		.end		= OTG_BASE + 0xff,
+		.flags		= IORESOURCE_MEM,
+	}, {
+		.start		= INT_USB_IRQ_OTG,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device otg_device = {
+	.name		= "omap_otg",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(otg_resources),
+	.resource	= otg_resources,
+};
+
+static inline void otg_device_init(struct omap_usb_config *pdata)
+{
+	pdata->otg_device = &otg_device;
+}
+
+#else
+
+static inline void otg_device_init(struct omap_usb_config *pdata)
+{
+}
+
+#endif
+
+static void omap2_usb_devconf_clear(u8 port, u32 mask)
+{
+	u32 r;
+
+	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+	r &= ~USBTXWRMODEI(port, mask);
+	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
+static void omap2_usb_devconf_set(u8 port, u32 mask)
+{
+	u32 r;
+
+	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+	r |= USBTXWRMODEI(port, mask);
+	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
+static void omap2_usb2_disable_5pinbitll(void)
+{
+	u32 r;
+
+	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+	r &= ~(USBTXWRMODEI(2, USB_BIDIR_TLL) | USBT2TLL5PI);
+	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
+static void omap2_usb2_enable_5pinunitll(void)
+{
+	u32 r;
+
+	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+	r |= USBTXWRMODEI(2, USB_UNIDIR_TLL) | USBT2TLL5PI;
+	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
+static u32 __init omap2_usb0_init(unsigned nwires, unsigned is_device)
+{
+	u32	syscon1 = 0;
+
+	omap2_usb_devconf_clear(0, USB_BIDIR_TLL);
+
+	if (nwires == 0)
+		return 0;
+
+	if (is_device)
+		omap_cfg_reg(J20_24XX_USB0_PUEN);
+
+	omap_cfg_reg(K18_24XX_USB0_DAT);
+	omap_cfg_reg(K19_24XX_USB0_TXEN);
+	omap_cfg_reg(J14_24XX_USB0_SE0);
+	if (nwires != 3)
+		omap_cfg_reg(J18_24XX_USB0_RCV);
+
+	switch (nwires) {
+	case 3:
+		syscon1 = 2;
+		omap2_usb_devconf_set(0, USB_BIDIR);
+		break;
+	case 4:
+		syscon1 = 1;
+		omap2_usb_devconf_set(0, USB_BIDIR);
+		break;
+	case 6:
+		syscon1 = 3;
+		omap_cfg_reg(J19_24XX_USB0_VP);
+		omap_cfg_reg(K20_24XX_USB0_VM);
+		omap2_usb_devconf_set(0, USB_UNIDIR);
+		break;
+	default:
+		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
+			0, nwires);
+	}
+
+	return syscon1 << 16;
+}
+
+static u32 __init omap2_usb1_init(unsigned nwires)
+{
+	u32	syscon1 = 0;
+
+	omap2_usb_devconf_clear(1, USB_BIDIR_TLL);
+
+	if (nwires == 0)
+		return 0;
+
+	/* NOTE:  board-specific code must set up pin muxing for usb1,
+	 * since each signal could come out on either of two balls.
+	 */
+
+	switch (nwires) {
+	case 2:
+		/* NOTE: board-specific code must override this setting if
+		 * this TLL link is not using DP/DM
+		 */
+		syscon1 = 1;
+		omap2_usb_devconf_set(1, USB_BIDIR_TLL);
+		break;
+	case 3:
+		syscon1 = 2;
+		omap2_usb_devconf_set(1, USB_BIDIR);
+		break;
+	case 4:
+		syscon1 = 1;
+		omap2_usb_devconf_set(1, USB_BIDIR);
+		break;
+	case 6:
+	default:
+		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
+			1, nwires);
+	}
+
+	return syscon1 << 20;
+}
+
+static u32 __init omap2_usb2_init(unsigned nwires, unsigned alt_pingroup)
+{
+	u32	syscon1 = 0;
+
+	omap2_usb2_disable_5pinbitll();
+	alt_pingroup = 0;
+
+	/* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
+	if (alt_pingroup || nwires == 0)
+		return 0;
+
+	omap_cfg_reg(Y11_24XX_USB2_DAT);
+	omap_cfg_reg(AA10_24XX_USB2_SE0);
+	if (nwires > 2)
+		omap_cfg_reg(AA12_24XX_USB2_TXEN);
+	if (nwires > 3)
+		omap_cfg_reg(AA6_24XX_USB2_RCV);
+
+	switch (nwires) {
+	case 2:
+		/* NOTE: board-specific code must override this setting if
+		 * this TLL link is not using DP/DM
+		 */
+		syscon1 = 1;
+		omap2_usb_devconf_set(2, USB_BIDIR_TLL);
+		break;
+	case 3:
+		syscon1 = 2;
+		omap2_usb_devconf_set(2, USB_BIDIR);
+		break;
+	case 4:
+		syscon1 = 1;
+		omap2_usb_devconf_set(2, USB_BIDIR);
+		break;
+	case 5:
+		omap_cfg_reg(AA4_24XX_USB2_TLLSE0);
+		/* NOTE: board-specific code must override this setting if
+		 * this TLL link is not using DP/DM.  Something must also
+		 * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED}
+		 */
+		syscon1 = 3;
+		omap2_usb2_enable_5pinunitll();
+		break;
+	case 6:
+	default:
+		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
+			2, nwires);
+	}
+
+	return syscon1 << 24;
+}
+
+void __init omap2_usbfs_init(struct omap_usb_config *pdata)
+{
+	if (!cpu_is_omap24xx())
+		return;
+
+	pdata->usb0_init = omap2_usb0_init;
+	pdata->usb1_init = omap2_usb1_init;
+	pdata->usb2_init = omap2_usb2_init;
+	udc_device_init(pdata);
+	ohci_device_init(pdata);
+	otg_device_init(pdata);
+	omap_otg_init(pdata);
+}
+
+#endif