 4cd41ffd27
			
		
	
	
	4cd41ffd27
	
	
	
		
			
			-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJUFjfVAAoJEHm+PkMAQRiGANkIAIU3PNrAz9dIItq8a/rEAhnx l2shHoOyEmyNR2apholM3BPUNX50cbsc/HGdi7lZKLkA/ifAj6B9nFD2NzVsIChD 1QWVcvdkKlVuxXCDd26qbijlfmbTOAWrLw9ntvM+J6ZtECM6zCAZF4MAV/FwogPq ETGKD76AxJtVIhBMS99troAiC1YxmQ7DKgEr8CraTOR1qwXEonnPCmN/IZA6x2/G EXiihOuQB5me1X7k4PI0V8CDscQOn+3B2CQHIrjRB+KiTF+iKIuI8n6ORC6bpFh+ U8UZP9wLlIG1BrUHG83pIndglIHotqPcjmtfl1WGrRr2hn7abzVSfV+g5Syo3Vg= =Ep+s -----END PGP SIGNATURE----- Merge tag 'v3.17-rc5' into next Linux 3.17-rc5 Signed-off-by: Felipe Balbi <balbi@ti.com> Conflicts: Documentation/devicetree/bindings/usb/mxs-phy.txt drivers/usb/phy/phy-mxs-usb.c
		
			
				
	
	
		
			672 lines
		
	
	
	
		
			17 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			672 lines
		
	
	
	
		
			17 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
| /**
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|  * dwc3-omap.c - OMAP Specific Glue layer
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|  *
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|  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
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|  *
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|  * Authors: Felipe Balbi <balbi@ti.com>,
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|  *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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|  *
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|  * This program is free software: you can redistribute it and/or modify
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|  * it under the terms of the GNU General Public License version 2  of
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|  * the License as published by the Free Software Foundation.
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|  *
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|  * This program is distributed in the hope that it will be useful,
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|  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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|  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|  * GNU General Public License for more details.
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|  */
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| 
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| #include <linux/module.h>
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| #include <linux/kernel.h>
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| #include <linux/slab.h>
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| #include <linux/interrupt.h>
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| #include <linux/platform_device.h>
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| #include <linux/platform_data/dwc3-omap.h>
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| #include <linux/pm_runtime.h>
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| #include <linux/dma-mapping.h>
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| #include <linux/ioport.h>
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| #include <linux/io.h>
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| #include <linux/of.h>
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| #include <linux/of_platform.h>
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| #include <linux/extcon.h>
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| #include <linux/regulator/consumer.h>
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| 
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| #include <linux/usb/otg.h>
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| 
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| /*
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|  * All these registers belong to OMAP's Wrapper around the
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|  * DesignWare USB3 Core.
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|  */
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| 
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| #define USBOTGSS_REVISION			0x0000
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| #define USBOTGSS_SYSCONFIG			0x0010
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| #define USBOTGSS_IRQ_EOI			0x0020
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| #define USBOTGSS_EOI_OFFSET			0x0008
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| #define USBOTGSS_IRQSTATUS_RAW_0		0x0024
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| #define USBOTGSS_IRQSTATUS_0			0x0028
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| #define USBOTGSS_IRQENABLE_SET_0		0x002c
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| #define USBOTGSS_IRQENABLE_CLR_0		0x0030
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| #define USBOTGSS_IRQ0_OFFSET			0x0004
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| #define USBOTGSS_IRQSTATUS_RAW_1		0x0030
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| #define USBOTGSS_IRQSTATUS_1			0x0034
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| #define USBOTGSS_IRQENABLE_SET_1		0x0038
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| #define USBOTGSS_IRQENABLE_CLR_1		0x003c
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| #define USBOTGSS_IRQSTATUS_RAW_2		0x0040
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| #define USBOTGSS_IRQSTATUS_2			0x0044
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| #define USBOTGSS_IRQENABLE_SET_2		0x0048
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| #define USBOTGSS_IRQENABLE_CLR_2		0x004c
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| #define USBOTGSS_IRQSTATUS_RAW_3		0x0050
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| #define USBOTGSS_IRQSTATUS_3			0x0054
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| #define USBOTGSS_IRQENABLE_SET_3		0x0058
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| #define USBOTGSS_IRQENABLE_CLR_3		0x005c
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| #define USBOTGSS_IRQSTATUS_EOI_MISC		0x0030
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| #define USBOTGSS_IRQSTATUS_RAW_MISC		0x0034
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| #define USBOTGSS_IRQSTATUS_MISC			0x0038
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| #define USBOTGSS_IRQENABLE_SET_MISC		0x003c
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| #define USBOTGSS_IRQENABLE_CLR_MISC		0x0040
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| #define USBOTGSS_IRQMISC_OFFSET			0x03fc
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| #define USBOTGSS_UTMI_OTG_CTRL			0x0080
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| #define USBOTGSS_UTMI_OTG_STATUS		0x0084
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| #define USBOTGSS_UTMI_OTG_OFFSET		0x0480
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| #define USBOTGSS_TXFIFO_DEPTH			0x0508
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| #define USBOTGSS_RXFIFO_DEPTH			0x050c
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| #define USBOTGSS_MMRAM_OFFSET			0x0100
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| #define USBOTGSS_FLADJ				0x0104
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| #define USBOTGSS_DEBUG_CFG			0x0108
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| #define USBOTGSS_DEBUG_DATA			0x010c
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| #define USBOTGSS_DEV_EBC_EN			0x0110
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| #define USBOTGSS_DEBUG_OFFSET			0x0600
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| 
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| /* SYSCONFIG REGISTER */
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| #define USBOTGSS_SYSCONFIG_DMADISABLE		(1 << 16)
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| 
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| /* IRQ_EOI REGISTER */
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| #define USBOTGSS_IRQ_EOI_LINE_NUMBER		(1 << 0)
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| 
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| /* IRQS0 BITS */
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| #define USBOTGSS_IRQO_COREIRQ_ST		(1 << 0)
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| 
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| /* IRQMISC BITS */
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| #define USBOTGSS_IRQMISC_DMADISABLECLR		(1 << 17)
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| #define USBOTGSS_IRQMISC_OEVT			(1 << 16)
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| #define USBOTGSS_IRQMISC_DRVVBUS_RISE		(1 << 13)
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| #define USBOTGSS_IRQMISC_CHRGVBUS_RISE		(1 << 12)
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| #define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE	(1 << 11)
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| #define USBOTGSS_IRQMISC_IDPULLUP_RISE		(1 << 8)
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| #define USBOTGSS_IRQMISC_DRVVBUS_FALL		(1 << 5)
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| #define USBOTGSS_IRQMISC_CHRGVBUS_FALL		(1 << 4)
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| #define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL		(1 << 3)
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| #define USBOTGSS_IRQMISC_IDPULLUP_FALL		(1 << 0)
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| 
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| /* UTMI_OTG_CTRL REGISTER */
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| #define USBOTGSS_UTMI_OTG_CTRL_DRVVBUS		(1 << 5)
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| #define USBOTGSS_UTMI_OTG_CTRL_CHRGVBUS		(1 << 4)
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| #define USBOTGSS_UTMI_OTG_CTRL_DISCHRGVBUS	(1 << 3)
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| #define USBOTGSS_UTMI_OTG_CTRL_IDPULLUP		(1 << 0)
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| 
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| /* UTMI_OTG_STATUS REGISTER */
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| #define USBOTGSS_UTMI_OTG_STATUS_SW_MODE	(1 << 31)
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| #define USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT	(1 << 9)
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| #define USBOTGSS_UTMI_OTG_STATUS_TXBITSTUFFENABLE (1 << 8)
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| #define USBOTGSS_UTMI_OTG_STATUS_IDDIG		(1 << 4)
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| #define USBOTGSS_UTMI_OTG_STATUS_SESSEND	(1 << 3)
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| #define USBOTGSS_UTMI_OTG_STATUS_SESSVALID	(1 << 2)
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| #define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID	(1 << 1)
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| 
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| struct dwc3_omap {
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| 	struct device		*dev;
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| 
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| 	int			irq;
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| 	void __iomem		*base;
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| 
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| 	u32			utmi_otg_status;
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| 	u32			utmi_otg_offset;
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| 	u32			irqmisc_offset;
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| 	u32			irq_eoi_offset;
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| 	u32			debug_offset;
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| 	u32			irq0_offset;
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| 
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| 	u32			dma_status:1;
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| 
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| 	struct extcon_specific_cable_nb extcon_vbus_dev;
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| 	struct extcon_specific_cable_nb extcon_id_dev;
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| 	struct notifier_block	vbus_nb;
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| 	struct notifier_block	id_nb;
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| 
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| 	struct regulator	*vbus_reg;
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| };
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| 
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| enum omap_dwc3_vbus_id_status {
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| 	OMAP_DWC3_ID_FLOAT,
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| 	OMAP_DWC3_ID_GROUND,
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| 	OMAP_DWC3_VBUS_OFF,
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| 	OMAP_DWC3_VBUS_VALID,
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| };
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| 
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| static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)
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| {
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| 	return readl(base + offset);
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| }
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| 
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| static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)
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| {
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| 	writel(value, base + offset);
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| }
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| 
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| static u32 dwc3_omap_read_utmi_status(struct dwc3_omap *omap)
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| {
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| 	return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS +
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| 							omap->utmi_otg_offset);
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| }
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| 
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| static void dwc3_omap_write_utmi_status(struct dwc3_omap *omap, u32 value)
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| {
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| 	dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS +
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| 					omap->utmi_otg_offset, value);
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| 
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| }
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| 
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| static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap)
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| {
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| 	return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0 -
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| 						omap->irq0_offset);
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| }
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| 
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| static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value)
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| {
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| 	dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 -
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| 						omap->irq0_offset, value);
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| 
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| }
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| 
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| static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap)
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| {
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| 	return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_MISC +
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| 						omap->irqmisc_offset);
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| }
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| 
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| static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value)
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| {
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| 	dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC +
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| 					omap->irqmisc_offset, value);
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| 
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| }
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| 
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| static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value)
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| {
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| 	dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC +
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| 						omap->irqmisc_offset, value);
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| 
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| }
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| 
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| static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value)
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| {
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| 	dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 -
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| 						omap->irq0_offset, value);
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| }
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| 
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| static void dwc3_omap_set_mailbox(struct dwc3_omap *omap,
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| 	enum omap_dwc3_vbus_id_status status)
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| {
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| 	int	ret;
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| 	u32	val;
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| 
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| 	switch (status) {
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| 	case OMAP_DWC3_ID_GROUND:
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| 		dev_dbg(omap->dev, "ID GND\n");
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| 
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| 		if (omap->vbus_reg) {
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| 			ret = regulator_enable(omap->vbus_reg);
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| 			if (ret) {
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| 				dev_dbg(omap->dev, "regulator enable failed\n");
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| 				return;
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| 			}
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| 		}
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| 
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| 		val = dwc3_omap_read_utmi_status(omap);
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| 		val &= ~(USBOTGSS_UTMI_OTG_STATUS_IDDIG
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| 				| USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
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| 				| USBOTGSS_UTMI_OTG_STATUS_SESSEND);
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| 		val |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID
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| 				| USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT;
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| 		dwc3_omap_write_utmi_status(omap, val);
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| 		break;
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| 
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| 	case OMAP_DWC3_VBUS_VALID:
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| 		dev_dbg(omap->dev, "VBUS Connect\n");
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| 
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| 		val = dwc3_omap_read_utmi_status(omap);
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| 		val &= ~USBOTGSS_UTMI_OTG_STATUS_SESSEND;
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| 		val |= USBOTGSS_UTMI_OTG_STATUS_IDDIG
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| 				| USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
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| 				| USBOTGSS_UTMI_OTG_STATUS_SESSVALID
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| 				| USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT;
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| 		dwc3_omap_write_utmi_status(omap, val);
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| 		break;
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| 
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| 	case OMAP_DWC3_ID_FLOAT:
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| 		if (omap->vbus_reg)
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| 			regulator_disable(omap->vbus_reg);
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| 
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| 	case OMAP_DWC3_VBUS_OFF:
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| 		dev_dbg(omap->dev, "VBUS Disconnect\n");
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| 
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| 		val = dwc3_omap_read_utmi_status(omap);
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| 		val &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSVALID
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| 				| USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
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| 				| USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT);
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| 		val |= USBOTGSS_UTMI_OTG_STATUS_SESSEND
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| 				| USBOTGSS_UTMI_OTG_STATUS_IDDIG;
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| 		dwc3_omap_write_utmi_status(omap, val);
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| 		break;
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| 
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| 	default:
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| 		dev_dbg(omap->dev, "invalid state\n");
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| 	}
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| }
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| 
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| static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
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| {
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| 	struct dwc3_omap	*omap = _omap;
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| 	u32			reg;
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| 
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| 	reg = dwc3_omap_read_irqmisc_status(omap);
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| 
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| 	if (reg & USBOTGSS_IRQMISC_DMADISABLECLR) {
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| 		dev_dbg(omap->dev, "DMA Disable was Cleared\n");
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| 		omap->dma_status = false;
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| 	}
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| 
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| 	if (reg & USBOTGSS_IRQMISC_OEVT)
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| 		dev_dbg(omap->dev, "OTG Event\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_DRVVBUS_RISE)
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| 		dev_dbg(omap->dev, "DRVVBUS Rise\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_CHRGVBUS_RISE)
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| 		dev_dbg(omap->dev, "CHRGVBUS Rise\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_RISE)
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| 		dev_dbg(omap->dev, "DISCHRGVBUS Rise\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_IDPULLUP_RISE)
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| 		dev_dbg(omap->dev, "IDPULLUP Rise\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_DRVVBUS_FALL)
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| 		dev_dbg(omap->dev, "DRVVBUS Fall\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_CHRGVBUS_FALL)
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| 		dev_dbg(omap->dev, "CHRGVBUS Fall\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_FALL)
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| 		dev_dbg(omap->dev, "DISCHRGVBUS Fall\n");
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| 
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| 	if (reg & USBOTGSS_IRQMISC_IDPULLUP_FALL)
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| 		dev_dbg(omap->dev, "IDPULLUP Fall\n");
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| 
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| 	dwc3_omap_write_irqmisc_status(omap, reg);
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| 
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| 	reg = dwc3_omap_read_irq0_status(omap);
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| 
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| 	dwc3_omap_write_irq0_status(omap, reg);
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| 
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| 	return IRQ_HANDLED;
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| }
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| 
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| static int dwc3_omap_remove_core(struct device *dev, void *c)
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| {
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| 	struct platform_device *pdev = to_platform_device(dev);
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| 
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| 	of_device_unregister(pdev);
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| 
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| 	return 0;
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| }
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| 
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| static void dwc3_omap_enable_irqs(struct dwc3_omap *omap)
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| {
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| 	u32			reg;
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| 
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| 	/* enable all IRQs */
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| 	reg = USBOTGSS_IRQO_COREIRQ_ST;
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| 	dwc3_omap_write_irq0_set(omap, reg);
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| 
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| 	reg = (USBOTGSS_IRQMISC_OEVT |
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| 			USBOTGSS_IRQMISC_DRVVBUS_RISE |
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| 			USBOTGSS_IRQMISC_CHRGVBUS_RISE |
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| 			USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
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| 			USBOTGSS_IRQMISC_IDPULLUP_RISE |
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| 			USBOTGSS_IRQMISC_DRVVBUS_FALL |
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| 			USBOTGSS_IRQMISC_CHRGVBUS_FALL |
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| 			USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
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| 			USBOTGSS_IRQMISC_IDPULLUP_FALL);
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| 
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| 	dwc3_omap_write_irqmisc_set(omap, reg);
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| }
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| 
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| static void dwc3_omap_disable_irqs(struct dwc3_omap *omap)
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| {
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| 	/* disable all IRQs */
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| 	dwc3_omap_write_irqmisc_set(omap, 0x00);
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| 	dwc3_omap_write_irq0_set(omap, 0x00);
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| }
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| 
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| static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32);
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| 
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| static int dwc3_omap_id_notifier(struct notifier_block *nb,
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| 	unsigned long event, void *ptr)
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| {
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| 	struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, id_nb);
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| 
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| 	if (event)
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| 		dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
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| 	else
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| 		dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT);
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| 
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| 	return NOTIFY_DONE;
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| }
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| 
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| static int dwc3_omap_vbus_notifier(struct notifier_block *nb,
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| 	unsigned long event, void *ptr)
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| {
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| 	struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, vbus_nb);
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| 
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| 	if (event)
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| 		dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
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| 	else
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| 		dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF);
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| 
 | |
| 	return NOTIFY_DONE;
 | |
| }
 | |
| 
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| static void dwc3_omap_map_offset(struct dwc3_omap *omap)
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| {
 | |
| 	struct device_node	*node = omap->dev->of_node;
 | |
| 
 | |
| 	/*
 | |
| 	 * Differentiate between OMAP5 and AM437x.
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| 	 *
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| 	 * For OMAP5(ES2.0) and AM437x wrapper revision is same, even
 | |
| 	 * though there are changes in wrapper register offsets.
 | |
| 	 *
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| 	 * Using dt compatible to differentiate AM437x.
 | |
| 	 */
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| 	if (of_device_is_compatible(node, "ti,am437x-dwc3")) {
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| 		omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;
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| 		omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;
 | |
| 		omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;
 | |
| 		omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;
 | |
| 		omap->debug_offset = USBOTGSS_DEBUG_OFFSET;
 | |
| 	}
 | |
| }
 | |
| 
 | |
| static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap)
 | |
| {
 | |
| 	u32			reg;
 | |
| 	struct device_node	*node = omap->dev->of_node;
 | |
| 	int			utmi_mode = 0;
 | |
| 
 | |
| 	reg = dwc3_omap_read_utmi_status(omap);
 | |
| 
 | |
| 	of_property_read_u32(node, "utmi-mode", &utmi_mode);
 | |
| 
 | |
| 	switch (utmi_mode) {
 | |
| 	case DWC3_OMAP_UTMI_MODE_SW:
 | |
| 		reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
 | |
| 		break;
 | |
| 	case DWC3_OMAP_UTMI_MODE_HW:
 | |
| 		reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
 | |
| 		break;
 | |
| 	default:
 | |
| 		dev_dbg(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode);
 | |
| 	}
 | |
| 
 | |
| 	dwc3_omap_write_utmi_status(omap, reg);
 | |
| }
 | |
| 
 | |
| static int dwc3_omap_extcon_register(struct dwc3_omap *omap)
 | |
| {
 | |
| 	int			ret;
 | |
| 	struct device_node	*node = omap->dev->of_node;
 | |
| 	struct extcon_dev	*edev;
 | |
| 
 | |
| 	if (of_property_read_bool(node, "extcon")) {
 | |
| 		edev = extcon_get_edev_by_phandle(omap->dev, 0);
 | |
| 		if (IS_ERR(edev)) {
 | |
| 			dev_vdbg(omap->dev, "couldn't get extcon device\n");
 | |
| 			return -EPROBE_DEFER;
 | |
| 		}
 | |
| 
 | |
| 		omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier;
 | |
| 		ret = extcon_register_interest(&omap->extcon_vbus_dev,
 | |
| 					       edev->name, "USB",
 | |
| 					       &omap->vbus_nb);
 | |
| 		if (ret < 0)
 | |
| 			dev_vdbg(omap->dev, "failed to register notifier for USB\n");
 | |
| 
 | |
| 		omap->id_nb.notifier_call = dwc3_omap_id_notifier;
 | |
| 		ret = extcon_register_interest(&omap->extcon_id_dev,
 | |
| 					       edev->name, "USB-HOST",
 | |
| 					       &omap->id_nb);
 | |
| 		if (ret < 0)
 | |
| 			dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n");
 | |
| 
 | |
| 		if (extcon_get_cable_state(edev, "USB") == true)
 | |
| 			dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
 | |
| 		if (extcon_get_cable_state(edev, "USB-HOST") == true)
 | |
| 			dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
 | |
| 	}
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static int dwc3_omap_probe(struct platform_device *pdev)
 | |
| {
 | |
| 	struct device_node	*node = pdev->dev.of_node;
 | |
| 
 | |
| 	struct dwc3_omap	*omap;
 | |
| 	struct resource		*res;
 | |
| 	struct device		*dev = &pdev->dev;
 | |
| 	struct regulator	*vbus_reg = NULL;
 | |
| 
 | |
| 	int			ret;
 | |
| 	int			irq;
 | |
| 
 | |
| 	u32			reg;
 | |
| 
 | |
| 	void __iomem		*base;
 | |
| 
 | |
| 	if (!node) {
 | |
| 		dev_err(dev, "device node not found\n");
 | |
| 		return -EINVAL;
 | |
| 	}
 | |
| 
 | |
| 	omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
 | |
| 	if (!omap)
 | |
| 		return -ENOMEM;
 | |
| 
 | |
| 	platform_set_drvdata(pdev, omap);
 | |
| 
 | |
| 	irq = platform_get_irq(pdev, 0);
 | |
| 	if (irq < 0) {
 | |
| 		dev_err(dev, "missing IRQ resource\n");
 | |
| 		return -EINVAL;
 | |
| 	}
 | |
| 
 | |
| 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 | |
| 	base = devm_ioremap_resource(dev, res);
 | |
| 	if (IS_ERR(base))
 | |
| 		return PTR_ERR(base);
 | |
| 
 | |
| 	if (of_property_read_bool(node, "vbus-supply")) {
 | |
| 		vbus_reg = devm_regulator_get(dev, "vbus");
 | |
| 		if (IS_ERR(vbus_reg)) {
 | |
| 			dev_err(dev, "vbus init failed\n");
 | |
| 			return PTR_ERR(vbus_reg);
 | |
| 		}
 | |
| 	}
 | |
| 
 | |
| 	omap->dev	= dev;
 | |
| 	omap->irq	= irq;
 | |
| 	omap->base	= base;
 | |
| 	omap->vbus_reg	= vbus_reg;
 | |
| 	dev->dma_mask	= &dwc3_omap_dma_mask;
 | |
| 
 | |
| 	pm_runtime_enable(dev);
 | |
| 	ret = pm_runtime_get_sync(dev);
 | |
| 	if (ret < 0) {
 | |
| 		dev_err(dev, "get_sync failed with err %d\n", ret);
 | |
| 		goto err0;
 | |
| 	}
 | |
| 
 | |
| 	dwc3_omap_map_offset(omap);
 | |
| 	dwc3_omap_set_utmi_mode(omap);
 | |
| 
 | |
| 	/* check the DMA Status */
 | |
| 	reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
 | |
| 	omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);
 | |
| 
 | |
| 	ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0,
 | |
| 			"dwc3-omap", omap);
 | |
| 	if (ret) {
 | |
| 		dev_err(dev, "failed to request IRQ #%d --> %d\n",
 | |
| 				omap->irq, ret);
 | |
| 		goto err1;
 | |
| 	}
 | |
| 
 | |
| 	dwc3_omap_enable_irqs(omap);
 | |
| 
 | |
| 	ret = dwc3_omap_extcon_register(omap);
 | |
| 	if (ret < 0)
 | |
| 		goto err2;
 | |
| 
 | |
| 	ret = of_platform_populate(node, NULL, NULL, dev);
 | |
| 	if (ret) {
 | |
| 		dev_err(&pdev->dev, "failed to create dwc3 core\n");
 | |
| 		goto err3;
 | |
| 	}
 | |
| 
 | |
| 	return 0;
 | |
| 
 | |
| err3:
 | |
| 	if (omap->extcon_vbus_dev.edev)
 | |
| 		extcon_unregister_interest(&omap->extcon_vbus_dev);
 | |
| 	if (omap->extcon_id_dev.edev)
 | |
| 		extcon_unregister_interest(&omap->extcon_id_dev);
 | |
| 
 | |
| err2:
 | |
| 	dwc3_omap_disable_irqs(omap);
 | |
| 
 | |
| err1:
 | |
| 	pm_runtime_put_sync(dev);
 | |
| 
 | |
| err0:
 | |
| 	pm_runtime_disable(dev);
 | |
| 
 | |
| 	return ret;
 | |
| }
 | |
| 
 | |
| static int dwc3_omap_remove(struct platform_device *pdev)
 | |
| {
 | |
| 	struct dwc3_omap	*omap = platform_get_drvdata(pdev);
 | |
| 
 | |
| 	if (omap->extcon_vbus_dev.edev)
 | |
| 		extcon_unregister_interest(&omap->extcon_vbus_dev);
 | |
| 	if (omap->extcon_id_dev.edev)
 | |
| 		extcon_unregister_interest(&omap->extcon_id_dev);
 | |
| 	dwc3_omap_disable_irqs(omap);
 | |
| 	device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core);
 | |
| 	pm_runtime_put_sync(&pdev->dev);
 | |
| 	pm_runtime_disable(&pdev->dev);
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static const struct of_device_id of_dwc3_match[] = {
 | |
| 	{
 | |
| 		.compatible =	"ti,dwc3"
 | |
| 	},
 | |
| 	{
 | |
| 		.compatible =	"ti,am437x-dwc3"
 | |
| 	},
 | |
| 	{ },
 | |
| };
 | |
| MODULE_DEVICE_TABLE(of, of_dwc3_match);
 | |
| 
 | |
| #ifdef CONFIG_PM_SLEEP
 | |
| static int dwc3_omap_prepare(struct device *dev)
 | |
| {
 | |
| 	struct dwc3_omap	*omap = dev_get_drvdata(dev);
 | |
| 
 | |
| 	dwc3_omap_write_irqmisc_set(omap, 0x00);
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static void dwc3_omap_complete(struct device *dev)
 | |
| {
 | |
| 	struct dwc3_omap	*omap = dev_get_drvdata(dev);
 | |
| 	u32			reg;
 | |
| 
 | |
| 	reg = (USBOTGSS_IRQMISC_OEVT |
 | |
| 			USBOTGSS_IRQMISC_DRVVBUS_RISE |
 | |
| 			USBOTGSS_IRQMISC_CHRGVBUS_RISE |
 | |
| 			USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
 | |
| 			USBOTGSS_IRQMISC_IDPULLUP_RISE |
 | |
| 			USBOTGSS_IRQMISC_DRVVBUS_FALL |
 | |
| 			USBOTGSS_IRQMISC_CHRGVBUS_FALL |
 | |
| 			USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
 | |
| 			USBOTGSS_IRQMISC_IDPULLUP_FALL);
 | |
| 
 | |
| 	dwc3_omap_write_irqmisc_set(omap, reg);
 | |
| }
 | |
| 
 | |
| static int dwc3_omap_suspend(struct device *dev)
 | |
| {
 | |
| 	struct dwc3_omap	*omap = dev_get_drvdata(dev);
 | |
| 
 | |
| 	omap->utmi_otg_status = dwc3_omap_read_utmi_status(omap);
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static int dwc3_omap_resume(struct device *dev)
 | |
| {
 | |
| 	struct dwc3_omap	*omap = dev_get_drvdata(dev);
 | |
| 
 | |
| 	dwc3_omap_write_utmi_status(omap, omap->utmi_otg_status);
 | |
| 
 | |
| 	pm_runtime_disable(dev);
 | |
| 	pm_runtime_set_active(dev);
 | |
| 	pm_runtime_enable(dev);
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static const struct dev_pm_ops dwc3_omap_dev_pm_ops = {
 | |
| 	.prepare	= dwc3_omap_prepare,
 | |
| 	.complete	= dwc3_omap_complete,
 | |
| 
 | |
| 	SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume)
 | |
| };
 | |
| 
 | |
| #define DEV_PM_OPS	(&dwc3_omap_dev_pm_ops)
 | |
| #else
 | |
| #define DEV_PM_OPS	NULL
 | |
| #endif /* CONFIG_PM_SLEEP */
 | |
| 
 | |
| static struct platform_driver dwc3_omap_driver = {
 | |
| 	.probe		= dwc3_omap_probe,
 | |
| 	.remove		= dwc3_omap_remove,
 | |
| 	.driver		= {
 | |
| 		.name	= "omap-dwc3",
 | |
| 		.of_match_table	= of_dwc3_match,
 | |
| 		.pm	= DEV_PM_OPS,
 | |
| 	},
 | |
| };
 | |
| 
 | |
| module_platform_driver(dwc3_omap_driver);
 | |
| 
 | |
| MODULE_ALIAS("platform:omap-dwc3");
 | |
| MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
 | |
| MODULE_LICENSE("GPL v2");
 | |
| MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer");
 |