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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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![Linus Torvalds](/assets/img/avatar_default.png)
This is a pretty significant branch. It's the introduction of the first multiplatform support on ARM, and with this (and the later branch) merged, it is now possible to build one kernel that contains support for highbank, vexpress, mvebu, socfpga, and picoxcell. More platforms will be convered over in the next few releases. Two critical last things had to be done for this to be practical and possible: * Today each platform has its own include directory under mach-<mach>/include/mach/*, and traditionally that is where a lot of driver/platform shared definitions have gone, such as platform data structures. They now need to move out to a common location instead, and this branch moves a large number of those out to include/linux/platform_data. * Each platform used to list the device trees to compile for its boards in mach-<mach>/Makefile.boot. Both of the above changes will mean that there are some merge conflicts to come (and some to resolve here). It's a one-time move and once it settles in, we should be good for quite a while. Sorry for the overhead. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJQaO7aAAoJEIwa5zzehBx3bUIP/02U8PhkHJJrrowyIsWRBOql 7LPJ53PRRgrpBdmEGzFD3TO3zaNyrjQRbYgNDvzHMO6NAMNvdRFouuWYjO11/tuB i32zssXCC+eUOEgbAo/U/lYq+UOvqw9gv6mU+3+i3OcGEhdKOaoT/DSLPQC4hoDm 222TeLfFB3HJXu5n720dEQ9V3fO6TS1+bbh8TU3cjHqzceXsOrffZqOA5CQxUcRr KWwOjA0nALDwWcqgv45GJNwY3GTyAQ/hPMQavnuWK0voJ+qUYk5HftKocAK7C+py 0T0OFOAHTwtyhvzJBxLC84M6Ox465BYXyeNjIB+2nG/Um9+mDoP0dnWpGy4c7DMU P5hyqbeLGeqjUXQuYtRmgMMc3UeHKoUGAfXW9eMsjLa6/M4NLGv//7E7LbZPpgMZ obkjwuesmcaYn/FRyj/yFmC35YlF4oCLziVzEtURZw3eKHHSUlhkTDSMNnkcZ0kZ Vv7kFxnD2Y46ixiwSJv30ErQnVkgI3MdqDlDxkE8r5+phYuK4gCrNaJtiwRh/oNw cFhpPxKuA0sJ9b6YRTzjC45eT/XZomEEr/uifCFeRNaCquyjYP00Mm8F0flSqwx9 zi+emzPAwNmk1bvxMUM/idGnaj0V4p+BAYUAvkbSoqU1p1flzyhU88fGTSIyKOt6 K5TCDS2v5hrVykK9TDwl =Tc6y -----END PGP SIGNATURE----- Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM soc multiplatform enablement from Olof Johansson: "This is a pretty significant branch. It's the introduction of the first multiplatform support on ARM, and with this (and the later branch) merged, it is now possible to build one kernel that contains support for highbank, vexpress, mvebu, socfpga, and picoxcell. More platforms will be convered over in the next few releases. Two critical last things had to be done for this to be practical and possible: * Today each platform has its own include directory under mach-<mach>/include/mach/*, and traditionally that is where a lot of driver/platform shared definitions have gone, such as platform data structures. They now need to move out to a common location instead, and this branch moves a large number of those out to include/linux/platform_data. * Each platform used to list the device trees to compile for its boards in mach-<mach>/Makefile.boot. Both of the above changes will mean that there are some merge conflicts to come (and some to resolve here). It's a one-time move and once it settles in, we should be good for quite a while. Sorry for the overhead." Fix conflicts as per Olof. * tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits) ARM: add v7 multi-platform defconfig ARM: msm: Move core.h contents into common.h ARM: highbank: call highbank_pm_init from .init_machine ARM: dtb: move all dtb targets to common Makefile ARM: spear: move platform_data definitions ARM: samsung: move platform_data definitions ARM: orion: move platform_data definitions ARM: vexpress: convert to multi-platform ARM: initial multiplatform support ARM: mvebu: move armada-370-xp.h in mach dir ARM: vexpress: remove dependency on mach/* headers ARM: picoxcell: remove dependency on mach/* headers ARM: move all dtb targets out of Makefile.boot ARM: picoxcell: move debug macros to include/debug ARM: socfpga: move debug macros to include/debug ARM: mvebu: move debug macros to include/debug ARM: vexpress: move debug macros to include/debug ARM: highbank: move debug macros to include/debug ARM: move debug macros to common location ARM: make mach/gpio.h headers optional ...
620 lines
16 KiB
C
620 lines
16 KiB
C
/*
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* OHCI HCD (Host Controller Driver) for USB.
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*
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* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
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* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
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* (C) Copyright 2002 Hewlett-Packard Company
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*
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* Bus Glue for pxa27x
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*
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* Written by Christopher Hoover <ch@hpl.hp.com>
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* Based on fragments of previous driver by Russell King et al.
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*
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* Modified for LH7A404 from ohci-sa1111.c
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* by Durgesh Pattamatta <pattamattad@sharpsec.com>
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*
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* Modified for pxa27x from ohci-lh7a404.c
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* by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
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*
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* This file is licenced under the GPL.
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*/
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#include <linux/device.h>
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#include <linux/signal.h>
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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#include <linux/of_platform.h>
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#include <linux/of_gpio.h>
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#include <mach/hardware.h>
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#include <linux/platform_data/usb-ohci-pxa27x.h>
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#include <linux/platform_data/usb-pxa3xx-ulpi.h>
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/*
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* UHC: USB Host Controller (OHCI-like) register definitions
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*/
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#define UHCREV (0x0000) /* UHC HCI Spec Revision */
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#define UHCHCON (0x0004) /* UHC Host Control Register */
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#define UHCCOMS (0x0008) /* UHC Command Status Register */
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#define UHCINTS (0x000C) /* UHC Interrupt Status Register */
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#define UHCINTE (0x0010) /* UHC Interrupt Enable */
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#define UHCINTD (0x0014) /* UHC Interrupt Disable */
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#define UHCHCCA (0x0018) /* UHC Host Controller Comm. Area */
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#define UHCPCED (0x001C) /* UHC Period Current Endpt Descr */
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#define UHCCHED (0x0020) /* UHC Control Head Endpt Descr */
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#define UHCCCED (0x0024) /* UHC Control Current Endpt Descr */
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#define UHCBHED (0x0028) /* UHC Bulk Head Endpt Descr */
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#define UHCBCED (0x002C) /* UHC Bulk Current Endpt Descr */
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#define UHCDHEAD (0x0030) /* UHC Done Head */
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#define UHCFMI (0x0034) /* UHC Frame Interval */
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#define UHCFMR (0x0038) /* UHC Frame Remaining */
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#define UHCFMN (0x003C) /* UHC Frame Number */
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#define UHCPERS (0x0040) /* UHC Periodic Start */
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#define UHCLS (0x0044) /* UHC Low Speed Threshold */
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#define UHCRHDA (0x0048) /* UHC Root Hub Descriptor A */
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#define UHCRHDA_NOCP (1 << 12) /* No over current protection */
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#define UHCRHDA_OCPM (1 << 11) /* Over Current Protection Mode */
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#define UHCRHDA_POTPGT(x) \
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(((x) & 0xff) << 24) /* Power On To Power Good Time */
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#define UHCRHDB (0x004C) /* UHC Root Hub Descriptor B */
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#define UHCRHS (0x0050) /* UHC Root Hub Status */
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#define UHCRHPS1 (0x0054) /* UHC Root Hub Port 1 Status */
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#define UHCRHPS2 (0x0058) /* UHC Root Hub Port 2 Status */
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#define UHCRHPS3 (0x005C) /* UHC Root Hub Port 3 Status */
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#define UHCSTAT (0x0060) /* UHC Status Register */
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#define UHCSTAT_UPS3 (1 << 16) /* USB Power Sense Port3 */
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#define UHCSTAT_SBMAI (1 << 15) /* System Bus Master Abort Interrupt*/
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#define UHCSTAT_SBTAI (1 << 14) /* System Bus Target Abort Interrupt*/
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#define UHCSTAT_UPRI (1 << 13) /* USB Port Resume Interrupt */
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#define UHCSTAT_UPS2 (1 << 12) /* USB Power Sense Port 2 */
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#define UHCSTAT_UPS1 (1 << 11) /* USB Power Sense Port 1 */
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#define UHCSTAT_HTA (1 << 10) /* HCI Target Abort */
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#define UHCSTAT_HBA (1 << 8) /* HCI Buffer Active */
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#define UHCSTAT_RWUE (1 << 7) /* HCI Remote Wake Up Event */
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#define UHCHR (0x0064) /* UHC Reset Register */
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#define UHCHR_SSEP3 (1 << 11) /* Sleep Standby Enable for Port3 */
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#define UHCHR_SSEP2 (1 << 10) /* Sleep Standby Enable for Port2 */
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#define UHCHR_SSEP1 (1 << 9) /* Sleep Standby Enable for Port1 */
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#define UHCHR_PCPL (1 << 7) /* Power control polarity low */
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#define UHCHR_PSPL (1 << 6) /* Power sense polarity low */
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#define UHCHR_SSE (1 << 5) /* Sleep Standby Enable */
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#define UHCHR_UIT (1 << 4) /* USB Interrupt Test */
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#define UHCHR_SSDC (1 << 3) /* Simulation Scale Down Clock */
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#define UHCHR_CGR (1 << 2) /* Clock Generation Reset */
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#define UHCHR_FHR (1 << 1) /* Force Host Controller Reset */
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#define UHCHR_FSBIR (1 << 0) /* Force System Bus Iface Reset */
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#define UHCHIE (0x0068) /* UHC Interrupt Enable Register*/
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#define UHCHIE_UPS3IE (1 << 14) /* Power Sense Port3 IntEn */
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#define UHCHIE_UPRIE (1 << 13) /* Port Resume IntEn */
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#define UHCHIE_UPS2IE (1 << 12) /* Power Sense Port2 IntEn */
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#define UHCHIE_UPS1IE (1 << 11) /* Power Sense Port1 IntEn */
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#define UHCHIE_TAIE (1 << 10) /* HCI Interface Transfer Abort
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Interrupt Enable*/
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#define UHCHIE_HBAIE (1 << 8) /* HCI Buffer Active IntEn */
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#define UHCHIE_RWIE (1 << 7) /* Remote Wake-up IntEn */
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#define UHCHIT (0x006C) /* UHC Interrupt Test register */
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#define PXA_UHC_MAX_PORTNUM 3
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struct pxa27x_ohci {
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/* must be 1st member here for hcd_to_ohci() to work */
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struct ohci_hcd ohci;
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struct device *dev;
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struct clk *clk;
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void __iomem *mmio_base;
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};
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#define to_pxa27x_ohci(hcd) (struct pxa27x_ohci *)hcd_to_ohci(hcd)
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/*
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PMM_NPS_MODE -- PMM Non-power switching mode
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Ports are powered continuously.
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PMM_GLOBAL_MODE -- PMM global switching mode
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All ports are powered at the same time.
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PMM_PERPORT_MODE -- PMM per port switching mode
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Ports are powered individually.
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*/
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static int pxa27x_ohci_select_pmm(struct pxa27x_ohci *ohci, int mode)
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{
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uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
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uint32_t uhcrhdb = __raw_readl(ohci->mmio_base + UHCRHDB);
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switch (mode) {
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case PMM_NPS_MODE:
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uhcrhda |= RH_A_NPS;
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break;
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case PMM_GLOBAL_MODE:
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uhcrhda &= ~(RH_A_NPS & RH_A_PSM);
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break;
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case PMM_PERPORT_MODE:
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uhcrhda &= ~(RH_A_NPS);
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uhcrhda |= RH_A_PSM;
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/* Set port power control mask bits, only 3 ports. */
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uhcrhdb |= (0x7<<17);
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break;
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default:
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printk( KERN_ERR
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"Invalid mode %d, set to non-power switch mode.\n",
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mode );
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uhcrhda |= RH_A_NPS;
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}
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__raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
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__raw_writel(uhcrhdb, ohci->mmio_base + UHCRHDB);
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return 0;
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}
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extern int usb_disabled(void);
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/*-------------------------------------------------------------------------*/
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static inline void pxa27x_setup_hc(struct pxa27x_ohci *ohci,
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struct pxaohci_platform_data *inf)
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{
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uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
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uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
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if (inf->flags & ENABLE_PORT1)
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uhchr &= ~UHCHR_SSEP1;
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if (inf->flags & ENABLE_PORT2)
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uhchr &= ~UHCHR_SSEP2;
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if (inf->flags & ENABLE_PORT3)
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uhchr &= ~UHCHR_SSEP3;
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if (inf->flags & POWER_CONTROL_LOW)
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uhchr |= UHCHR_PCPL;
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if (inf->flags & POWER_SENSE_LOW)
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uhchr |= UHCHR_PSPL;
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if (inf->flags & NO_OC_PROTECTION)
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uhcrhda |= UHCRHDA_NOCP;
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else
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uhcrhda &= ~UHCRHDA_NOCP;
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if (inf->flags & OC_MODE_PERPORT)
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uhcrhda |= UHCRHDA_OCPM;
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else
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uhcrhda &= ~UHCRHDA_OCPM;
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if (inf->power_on_delay) {
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uhcrhda &= ~UHCRHDA_POTPGT(0xff);
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uhcrhda |= UHCRHDA_POTPGT(inf->power_on_delay / 2);
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}
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__raw_writel(uhchr, ohci->mmio_base + UHCHR);
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__raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
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}
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static inline void pxa27x_reset_hc(struct pxa27x_ohci *ohci)
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{
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uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
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__raw_writel(uhchr | UHCHR_FHR, ohci->mmio_base + UHCHR);
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udelay(11);
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__raw_writel(uhchr & ~UHCHR_FHR, ohci->mmio_base + UHCHR);
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}
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#ifdef CONFIG_PXA27x
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extern void pxa27x_clear_otgph(void);
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#else
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#define pxa27x_clear_otgph() do {} while (0)
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#endif
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static int pxa27x_start_hc(struct pxa27x_ohci *ohci, struct device *dev)
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{
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int retval = 0;
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struct pxaohci_platform_data *inf;
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uint32_t uhchr;
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inf = dev->platform_data;
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clk_prepare_enable(ohci->clk);
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pxa27x_reset_hc(ohci);
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uhchr = __raw_readl(ohci->mmio_base + UHCHR) | UHCHR_FSBIR;
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__raw_writel(uhchr, ohci->mmio_base + UHCHR);
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while (__raw_readl(ohci->mmio_base + UHCHR) & UHCHR_FSBIR)
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cpu_relax();
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pxa27x_setup_hc(ohci, inf);
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if (inf->init)
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retval = inf->init(dev);
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if (retval < 0)
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return retval;
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if (cpu_is_pxa3xx())
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pxa3xx_u2d_start_hc(&ohci_to_hcd(&ohci->ohci)->self);
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uhchr = __raw_readl(ohci->mmio_base + UHCHR) & ~UHCHR_SSE;
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__raw_writel(uhchr, ohci->mmio_base + UHCHR);
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__raw_writel(UHCHIE_UPRIE | UHCHIE_RWIE, ohci->mmio_base + UHCHIE);
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/* Clear any OTG Pin Hold */
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pxa27x_clear_otgph();
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return 0;
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}
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static void pxa27x_stop_hc(struct pxa27x_ohci *ohci, struct device *dev)
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{
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struct pxaohci_platform_data *inf;
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uint32_t uhccoms;
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inf = dev->platform_data;
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if (cpu_is_pxa3xx())
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pxa3xx_u2d_stop_hc(&ohci_to_hcd(&ohci->ohci)->self);
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if (inf->exit)
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inf->exit(dev);
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pxa27x_reset_hc(ohci);
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/* Host Controller Reset */
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uhccoms = __raw_readl(ohci->mmio_base + UHCCOMS) | 0x01;
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__raw_writel(uhccoms, ohci->mmio_base + UHCCOMS);
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udelay(10);
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clk_disable_unprepare(ohci->clk);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id pxa_ohci_dt_ids[] = {
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{ .compatible = "marvell,pxa-ohci" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, pxa_ohci_dt_ids);
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static u64 pxa_ohci_dma_mask = DMA_BIT_MASK(32);
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static int __devinit ohci_pxa_of_init(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct pxaohci_platform_data *pdata;
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u32 tmp;
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if (!np)
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return 0;
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/* Right now device-tree probed devices don't get dma_mask set.
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* Since shared usb code relies on it, set it here for now.
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* Once we have dma capability bindings this can go away.
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*/
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if (!pdev->dev.dma_mask)
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pdev->dev.dma_mask = &pxa_ohci_dma_mask;
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pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
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if (!pdata)
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return -ENOMEM;
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if (of_get_property(np, "marvell,enable-port1", NULL))
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pdata->flags |= ENABLE_PORT1;
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if (of_get_property(np, "marvell,enable-port2", NULL))
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pdata->flags |= ENABLE_PORT2;
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if (of_get_property(np, "marvell,enable-port3", NULL))
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pdata->flags |= ENABLE_PORT3;
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if (of_get_property(np, "marvell,port-sense-low", NULL))
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pdata->flags |= POWER_SENSE_LOW;
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if (of_get_property(np, "marvell,power-control-low", NULL))
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pdata->flags |= POWER_CONTROL_LOW;
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if (of_get_property(np, "marvell,no-oc-protection", NULL))
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pdata->flags |= NO_OC_PROTECTION;
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if (of_get_property(np, "marvell,oc-mode-perport", NULL))
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pdata->flags |= OC_MODE_PERPORT;
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if (!of_property_read_u32(np, "marvell,power-on-delay", &tmp))
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pdata->power_on_delay = tmp;
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if (!of_property_read_u32(np, "marvell,port-mode", &tmp))
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pdata->port_mode = tmp;
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if (!of_property_read_u32(np, "marvell,power-budget", &tmp))
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pdata->power_budget = tmp;
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pdev->dev.platform_data = pdata;
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return 0;
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}
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#else
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static int __devinit ohci_pxa_of_init(struct platform_device *pdev)
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{
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return 0;
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}
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#endif
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/*-------------------------------------------------------------------------*/
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/* configure so an HC device and id are always provided */
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/* always called with process context; sleeping is OK */
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/**
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* usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
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* Context: !in_interrupt()
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*
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* Allocates basic resources for this USB host controller, and
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* then invokes the start() method for the HCD associated with it
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* through the hotplug entry's driver_data.
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*
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*/
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int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev)
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{
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int retval, irq;
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struct usb_hcd *hcd;
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struct pxaohci_platform_data *inf;
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|
struct pxa27x_ohci *ohci;
|
|
struct resource *r;
|
|
struct clk *usb_clk;
|
|
|
|
retval = ohci_pxa_of_init(pdev);
|
|
if (retval)
|
|
return retval;
|
|
|
|
inf = pdev->dev.platform_data;
|
|
|
|
if (!inf)
|
|
return -ENODEV;
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0) {
|
|
pr_err("no resource of IORESOURCE_IRQ");
|
|
return -ENXIO;
|
|
}
|
|
|
|
usb_clk = clk_get(&pdev->dev, NULL);
|
|
if (IS_ERR(usb_clk))
|
|
return PTR_ERR(usb_clk);
|
|
|
|
hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
|
|
if (!hcd) {
|
|
retval = -ENOMEM;
|
|
goto err0;
|
|
}
|
|
|
|
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!r) {
|
|
pr_err("no resource of IORESOURCE_MEM");
|
|
retval = -ENXIO;
|
|
goto err1;
|
|
}
|
|
|
|
hcd->rsrc_start = r->start;
|
|
hcd->rsrc_len = resource_size(r);
|
|
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
|
|
pr_debug("request_mem_region failed");
|
|
retval = -EBUSY;
|
|
goto err1;
|
|
}
|
|
|
|
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
|
|
if (!hcd->regs) {
|
|
pr_debug("ioremap failed");
|
|
retval = -ENOMEM;
|
|
goto err2;
|
|
}
|
|
|
|
/* initialize "struct pxa27x_ohci" */
|
|
ohci = (struct pxa27x_ohci *)hcd_to_ohci(hcd);
|
|
ohci->dev = &pdev->dev;
|
|
ohci->clk = usb_clk;
|
|
ohci->mmio_base = (void __iomem *)hcd->regs;
|
|
|
|
if ((retval = pxa27x_start_hc(ohci, &pdev->dev)) < 0) {
|
|
pr_debug("pxa27x_start_hc failed");
|
|
goto err3;
|
|
}
|
|
|
|
/* Select Power Management Mode */
|
|
pxa27x_ohci_select_pmm(ohci, inf->port_mode);
|
|
|
|
if (inf->power_budget)
|
|
hcd->power_budget = inf->power_budget;
|
|
|
|
ohci_hcd_init(hcd_to_ohci(hcd));
|
|
|
|
retval = usb_add_hcd(hcd, irq, 0);
|
|
if (retval == 0)
|
|
return retval;
|
|
|
|
pxa27x_stop_hc(ohci, &pdev->dev);
|
|
err3:
|
|
iounmap(hcd->regs);
|
|
err2:
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
err1:
|
|
usb_put_hcd(hcd);
|
|
err0:
|
|
clk_put(usb_clk);
|
|
return retval;
|
|
}
|
|
|
|
|
|
/* may be called without controller electrically present */
|
|
/* may be called with controller, bus, and devices active */
|
|
|
|
/**
|
|
* usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
|
|
* @dev: USB Host Controller being removed
|
|
* Context: !in_interrupt()
|
|
*
|
|
* Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
|
|
* the HCD's stop() method. It is always called from a thread
|
|
* context, normally "rmmod", "apmd", or something similar.
|
|
*
|
|
*/
|
|
void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev)
|
|
{
|
|
struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
|
|
|
|
usb_remove_hcd(hcd);
|
|
pxa27x_stop_hc(ohci, &pdev->dev);
|
|
iounmap(hcd->regs);
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
usb_put_hcd(hcd);
|
|
clk_put(ohci->clk);
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static int __devinit
|
|
ohci_pxa27x_start (struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
int ret;
|
|
|
|
ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);
|
|
|
|
/* The value of NDP in roothub_a is incorrect on this hardware */
|
|
ohci->num_ports = 3;
|
|
|
|
if ((ret = ohci_init(ohci)) < 0)
|
|
return ret;
|
|
|
|
if ((ret = ohci_run (ohci)) < 0) {
|
|
dev_err(hcd->self.controller, "can't start %s",
|
|
hcd->self.bus_name);
|
|
ohci_stop (hcd);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static const struct hc_driver ohci_pxa27x_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "PXA27x OHCI",
|
|
.hcd_priv_size = sizeof(struct pxa27x_ohci),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ohci_irq,
|
|
.flags = HCD_USB11 | HCD_MEMORY,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*/
|
|
.start = ohci_pxa27x_start,
|
|
.stop = ohci_stop,
|
|
.shutdown = ohci_shutdown,
|
|
|
|
/*
|
|
* managing i/o requests and associated device resources
|
|
*/
|
|
.urb_enqueue = ohci_urb_enqueue,
|
|
.urb_dequeue = ohci_urb_dequeue,
|
|
.endpoint_disable = ohci_endpoint_disable,
|
|
|
|
/*
|
|
* scheduling support
|
|
*/
|
|
.get_frame_number = ohci_get_frame,
|
|
|
|
/*
|
|
* root hub support
|
|
*/
|
|
.hub_status_data = ohci_hub_status_data,
|
|
.hub_control = ohci_hub_control,
|
|
#ifdef CONFIG_PM
|
|
.bus_suspend = ohci_bus_suspend,
|
|
.bus_resume = ohci_bus_resume,
|
|
#endif
|
|
.start_port_reset = ohci_start_port_reset,
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev)
|
|
{
|
|
pr_debug ("In ohci_hcd_pxa27x_drv_probe");
|
|
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
|
|
}
|
|
|
|
static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
usb_hcd_pxa27x_remove(hcd, pdev);
|
|
platform_set_drvdata(pdev, NULL);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
|
|
{
|
|
struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
|
|
|
|
if (time_before(jiffies, ohci->ohci.next_statechange))
|
|
msleep(5);
|
|
ohci->ohci.next_statechange = jiffies;
|
|
|
|
pxa27x_stop_hc(ohci, dev);
|
|
return 0;
|
|
}
|
|
|
|
static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
|
|
{
|
|
struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
|
|
struct pxaohci_platform_data *inf = dev->platform_data;
|
|
int status;
|
|
|
|
if (time_before(jiffies, ohci->ohci.next_statechange))
|
|
msleep(5);
|
|
ohci->ohci.next_statechange = jiffies;
|
|
|
|
if ((status = pxa27x_start_hc(ohci, dev)) < 0)
|
|
return status;
|
|
|
|
/* Select Power Management Mode */
|
|
pxa27x_ohci_select_pmm(ohci, inf->port_mode);
|
|
|
|
ohci_finish_controller_resume(hcd);
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops ohci_hcd_pxa27x_pm_ops = {
|
|
.suspend = ohci_hcd_pxa27x_drv_suspend,
|
|
.resume = ohci_hcd_pxa27x_drv_resume,
|
|
};
|
|
#endif
|
|
|
|
/* work with hotplug and coldplug */
|
|
MODULE_ALIAS("platform:pxa27x-ohci");
|
|
|
|
static struct platform_driver ohci_hcd_pxa27x_driver = {
|
|
.probe = ohci_hcd_pxa27x_drv_probe,
|
|
.remove = ohci_hcd_pxa27x_drv_remove,
|
|
.shutdown = usb_hcd_platform_shutdown,
|
|
.driver = {
|
|
.name = "pxa27x-ohci",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = of_match_ptr(pxa_ohci_dt_ids),
|
|
#ifdef CONFIG_PM
|
|
.pm = &ohci_hcd_pxa27x_pm_ops,
|
|
#endif
|
|
},
|
|
};
|
|
|