* 'master' of git://git.denx.de/u-boot-usb: USB: S5P: Add ehci support usb:udc:samsung Add functions for storing private gadget data in UDC driver usb:gadget:composite: Support for composite at gadget.h usb:gadget:composite USB composite gadget support usb:udc:samsung:cleanup Replace DEBUG_* macros with debug_cond() calls usb:udc: Remove duplicated USB definitions from include/linux/usb/ch9.h file USB: Document the QH and qTD antics in EHCI-HCD USB: Drop cache flush bloat in EHCI-HCD USB: Drop ehci_alloc/ehci_free in ehci-hcd USB: Align buffers at cacheline usb: use noinline definemaster
Wolfgang Denk
12 years ago
commit
2ab5be7af0
@ -0,0 +1,66 @@ |
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/*
|
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* SAMSUNG S5P USB HOST EHCI Controller |
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* |
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* Copyright (C) 2012 Samsung Electronics Co.Ltd |
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* Vivek Gautam <gautam.vivek@samsung.com> |
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* |
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* 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. |
||||
* |
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* 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., 51 Franklin Street, Fifth Floor, Boston, |
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* MA 02110-1301 USA |
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*/ |
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|
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#ifndef __ASM_ARM_ARCH_EXYNOS5_EHCI_S5P_H__ |
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#define __ASM_ARM_ARCH_EXYNOS5_EHCI_S5P_H__ |
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|
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#define CLK_24MHZ 5 |
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|
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#define HOST_CTRL0_PHYSWRSTALL (1 << 31) |
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#define HOST_CTRL0_COMMONON_N (1 << 9) |
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#define HOST_CTRL0_SIDDQ (1 << 6) |
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#define HOST_CTRL0_FORCESLEEP (1 << 5) |
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#define HOST_CTRL0_FORCESUSPEND (1 << 4) |
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#define HOST_CTRL0_WORDINTERFACE (1 << 3) |
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#define HOST_CTRL0_UTMISWRST (1 << 2) |
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#define HOST_CTRL0_LINKSWRST (1 << 1) |
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#define HOST_CTRL0_PHYSWRST (1 << 0) |
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|
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#define HOST_CTRL0_FSEL_MASK (7 << 16) |
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|
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#define EHCICTRL_ENAINCRXALIGN (1 << 29) |
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#define EHCICTRL_ENAINCR4 (1 << 28) |
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#define EHCICTRL_ENAINCR8 (1 << 27) |
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#define EHCICTRL_ENAINCR16 (1 << 26) |
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|
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/* Register map for PHY control */ |
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struct s5p_usb_phy { |
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unsigned int usbphyctrl0; |
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unsigned int usbphytune0; |
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unsigned int reserved1[2]; |
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unsigned int hsicphyctrl1; |
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unsigned int hsicphytune1; |
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unsigned int reserved2[2]; |
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unsigned int hsicphyctrl2; |
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unsigned int hsicphytune2; |
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unsigned int reserved3[2]; |
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unsigned int ehcictrl; |
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unsigned int ohcictrl; |
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unsigned int usbotgsys; |
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unsigned int reserved4; |
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unsigned int usbotgtune; |
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}; |
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|
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/* Switch on the VBUS power. */ |
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int board_usb_vbus_init(void); |
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|
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#endif /* __ASM_ARM_ARCH_EXYNOS5_EHCI_S5P_H__ */ |
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File diff suppressed because it is too large
Load Diff
@ -0,0 +1,110 @@ |
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/*
|
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* SAMSUNG S5P USB HOST EHCI Controller |
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* |
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* Copyright (C) 2012 Samsung Electronics Co.Ltd |
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* Vivek Gautam <gautam.vivek@samsung.com> |
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* |
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* 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. |
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* |
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* 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 |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
||||
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
||||
* MA 02110-1301 USA |
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*/ |
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|
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#include <common.h> |
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#include <usb.h> |
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#include <asm/arch/cpu.h> |
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#include <asm/arch/ehci-s5p.h> |
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#include "ehci.h" |
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#include "ehci-core.h" |
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|
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/* Setup the EHCI host controller. */ |
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static void setup_usb_phy(struct s5p_usb_phy *usb) |
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{ |
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clrbits_le32(&usb->usbphyctrl0, |
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HOST_CTRL0_FSEL_MASK | |
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HOST_CTRL0_COMMONON_N | |
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/* HOST Phy setting */ |
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HOST_CTRL0_PHYSWRST | |
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HOST_CTRL0_PHYSWRSTALL | |
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HOST_CTRL0_SIDDQ | |
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HOST_CTRL0_FORCESUSPEND | |
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HOST_CTRL0_FORCESLEEP); |
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|
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setbits_le32(&usb->usbphyctrl0, |
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/* Setting up the ref freq */ |
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(CLK_24MHZ << 16) | |
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/* HOST Phy setting */ |
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HOST_CTRL0_LINKSWRST | |
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HOST_CTRL0_UTMISWRST); |
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udelay(10); |
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clrbits_le32(&usb->usbphyctrl0, |
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HOST_CTRL0_LINKSWRST | |
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HOST_CTRL0_UTMISWRST); |
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udelay(20); |
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|
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/* EHCI Ctrl setting */ |
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setbits_le32(&usb->ehcictrl, |
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EHCICTRL_ENAINCRXALIGN | |
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EHCICTRL_ENAINCR4 | |
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EHCICTRL_ENAINCR8 | |
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EHCICTRL_ENAINCR16); |
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} |
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|
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/* Reset the EHCI host controller. */ |
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static void reset_usb_phy(struct s5p_usb_phy *usb) |
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{ |
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/* HOST_PHY reset */ |
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setbits_le32(&usb->usbphyctrl0, |
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HOST_CTRL0_PHYSWRST | |
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HOST_CTRL0_PHYSWRSTALL | |
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HOST_CTRL0_SIDDQ | |
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HOST_CTRL0_FORCESUSPEND | |
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HOST_CTRL0_FORCESLEEP); |
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} |
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|
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/*
|
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* EHCI-initialization |
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* Create the appropriate control structures to manage |
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* a new EHCI host controller. |
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*/ |
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int ehci_hcd_init(void) |
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{ |
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struct s5p_usb_phy *usb; |
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|
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usb = (struct s5p_usb_phy *)samsung_get_base_usb_phy(); |
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setup_usb_phy(usb); |
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|
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hccr = (struct ehci_hccr *)(EXYNOS5_USB_HOST_EHCI_BASE); |
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hcor = (struct ehci_hcor *)((uint32_t) hccr |
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+ HC_LENGTH(ehci_readl(&hccr->cr_capbase))); |
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|
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debug("Exynos5-ehci: init hccr %x and hcor %x hc_length %d\n", |
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(uint32_t)hccr, (uint32_t)hcor, |
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(uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); |
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|
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return 0; |
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} |
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|
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/*
|
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* Destroy the appropriate control structures corresponding |
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* the EHCI host controller. |
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*/ |
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int ehci_hcd_stop() |
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{ |
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struct s5p_usb_phy *usb; |
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|
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usb = (struct s5p_usb_phy *)samsung_get_base_usb_phy(); |
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reset_usb_phy(usb); |
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|
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return 0; |
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} |
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@ -0,0 +1,350 @@ |
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/*
|
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* composite.h -- framework for usb gadgets which are composite devices |
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* |
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* Copyright (C) 2006-2008 David Brownell |
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* |
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* 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. |
||||
* |
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* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
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|
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#ifndef __LINUX_USB_COMPOSITE_H |
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#define __LINUX_USB_COMPOSITE_H |
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|
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/*
|
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* This framework is an optional layer on top of the USB Gadget interface, |
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* making it easier to build (a) Composite devices, supporting multiple |
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* functions within any single configuration, and (b) Multi-configuration |
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* devices, also supporting multiple functions but without necessarily |
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* having more than one function per configuration. |
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* |
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* Example: a device with a single configuration supporting both network |
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* link and mass storage functions is a composite device. Those functions |
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* might alternatively be packaged in individual configurations, but in |
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* the composite model the host can use both functions at the same time. |
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*/ |
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|
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#include <common.h> |
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#include <linux/usb/ch9.h> |
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#include <linux/usb/gadget.h> |
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#include <usb/lin_gadget_compat.h> |
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|
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struct usb_configuration; |
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|
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/**
|
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* struct usb_function - describes one function of a configuration |
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* @name: For diagnostics, identifies the function. |
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* @strings: tables of strings, keyed by identifiers assigned during bind() |
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* and by language IDs provided in control requests |
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* @descriptors: Table of full (or low) speed descriptors, using interface and |
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* string identifiers assigned during @bind(). If this pointer is null, |
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* the function will not be available at full speed (or at low speed). |
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* @hs_descriptors: Table of high speed descriptors, using interface and |
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* string identifiers assigned during @bind(). If this pointer is null, |
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* the function will not be available at high speed. |
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* @config: assigned when @usb_add_function() is called; this is the |
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* configuration with which this function is associated. |
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* @bind: Before the gadget can register, all of its functions bind() to the |
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* available resources including string and interface identifiers used |
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* in interface or class descriptors; endpoints; I/O buffers; and so on. |
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* @unbind: Reverses @bind; called as a side effect of unregistering the |
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* driver which added this function. |
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* @set_alt: (REQUIRED) Reconfigures altsettings; function drivers may |
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* initialize usb_ep.driver data at this time (when it is used). |
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* Note that setting an interface to its current altsetting resets |
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* interface state, and that all interfaces have a disabled state. |
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* @get_alt: Returns the active altsetting. If this is not provided, |
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* then only altsetting zero is supported. |
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* @disable: (REQUIRED) Indicates the function should be disabled. Reasons |
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* include host resetting or reconfiguring the gadget, and disconnection. |
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* @setup: Used for interface-specific control requests. |
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* @suspend: Notifies functions when the host stops sending USB traffic. |
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* @resume: Notifies functions when the host restarts USB traffic. |
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* |
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* A single USB function uses one or more interfaces, and should in most |
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* cases support operation at both full and high speeds. Each function is |
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* associated by @usb_add_function() with a one configuration; that function |
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* causes @bind() to be called so resources can be allocated as part of |
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* setting up a gadget driver. Those resources include endpoints, which |
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* should be allocated using @usb_ep_autoconfig(). |
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* |
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* To support dual speed operation, a function driver provides descriptors |
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* for both high and full speed operation. Except in rare cases that don't |
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* involve bulk endpoints, each speed needs different endpoint descriptors. |
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* |
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* Function drivers choose their own strategies for managing instance data. |
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* The simplest strategy just declares it "static', which means the function |
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* can only be activated once. If the function needs to be exposed in more |
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* than one configuration at a given speed, it needs to support multiple |
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* usb_function structures (one for each configuration). |
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* |
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* A more complex strategy might encapsulate a @usb_function structure inside |
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* a driver-specific instance structure to allows multiple activations. An |
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* example of multiple activations might be a CDC ACM function that supports |
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* two or more distinct instances within the same configuration, providing |
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* several independent logical data links to a USB host. |
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*/ |
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struct usb_function { |
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const char *name; |
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struct usb_gadget_strings **strings; |
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struct usb_descriptor_header **descriptors; |
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struct usb_descriptor_header **hs_descriptors; |
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|
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struct usb_configuration *config; |
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|
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/* REVISIT: bind() functions can be marked __init, which
|
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* makes trouble for section mismatch analysis. See if |
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* we can't restructure things to avoid mismatching. |
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* Related: unbind() may kfree() but bind() won't... |
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*/ |
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|
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/* configuration management: bind/unbind */ |
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int (*bind)(struct usb_configuration *, |
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struct usb_function *); |
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void (*unbind)(struct usb_configuration *, |
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struct usb_function *); |
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|
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/* runtime state management */ |
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int (*set_alt)(struct usb_function *, |
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unsigned interface, unsigned alt); |
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int (*get_alt)(struct usb_function *, |
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unsigned interface); |
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void (*disable)(struct usb_function *); |
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int (*setup)(struct usb_function *, |
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const struct usb_ctrlrequest *); |
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void (*suspend)(struct usb_function *); |
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void (*resume)(struct usb_function *); |
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|
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/* private: */ |
||||
/* internals */ |
||||
struct list_head list; |
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DECLARE_BITMAP(endpoints, 32); |
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}; |
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|
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int usb_add_function(struct usb_configuration *, struct usb_function *); |
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|
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int usb_function_deactivate(struct usb_function *); |
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int usb_function_activate(struct usb_function *); |
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|
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int usb_interface_id(struct usb_configuration *, struct usb_function *); |
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|
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/**
|
||||
* ep_choose - select descriptor endpoint at current device speed |
||||
* @g: gadget, connected and running at some speed |
||||
* @hs: descriptor to use for high speed operation |
||||
* @fs: descriptor to use for full or low speed operation |
||||
*/ |
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static inline struct usb_endpoint_descriptor * |
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ep_choose(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, |
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struct usb_endpoint_descriptor *fs) |
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{ |
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if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) |
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return hs; |
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return fs; |
||||
} |
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|
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#define MAX_CONFIG_INTERFACES 16 /* arbitrary; max 255 */ |
||||
|
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/**
|
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* struct usb_configuration - represents one gadget configuration |
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* @label: For diagnostics, describes the configuration. |
||||
* @strings: Tables of strings, keyed by identifiers assigned during @bind() |
||||
* and by language IDs provided in control requests. |
||||
* @descriptors: Table of descriptors preceding all function descriptors. |
||||
* Examples include OTG and vendor-specific descriptors. |
||||
* @bind: Called from @usb_add_config() to allocate resources unique to this |
||||
* configuration and to call @usb_add_function() for each function used. |
||||
* @unbind: Reverses @bind; called as a side effect of unregistering the |
||||
* driver which added this configuration. |
||||
* @setup: Used to delegate control requests that aren't handled by standard |
||||
* device infrastructure or directed at a specific interface. |
||||
* @bConfigurationValue: Copied into configuration descriptor. |
||||
* @iConfiguration: Copied into configuration descriptor. |
||||
* @bmAttributes: Copied into configuration descriptor. |
||||
* @bMaxPower: Copied into configuration descriptor. |
||||
* @cdev: assigned by @usb_add_config() before calling @bind(); this is |
||||
* the device associated with this configuration. |
||||
* |
||||
* Configurations are building blocks for gadget drivers structured around |
||||
* function drivers. Simple USB gadgets require only one function and one |
||||
* configuration, and handle dual-speed hardware by always providing the same |
||||
* functionality. Slightly more complex gadgets may have more than one |
||||
* single-function configuration at a given speed; or have configurations |
||||
* that only work at one speed. |
||||
* |
||||
* Composite devices are, by definition, ones with configurations which |
||||
* include more than one function. |
||||
* |
||||
* The lifecycle of a usb_configuration includes allocation, initialization |
||||
* of the fields described above, and calling @usb_add_config() to set up |
||||
* internal data and bind it to a specific device. The configuration's |
||||
* @bind() method is then used to initialize all the functions and then |
||||
* call @usb_add_function() for them. |
||||
* |
||||
* Those functions would normally be independant of each other, but that's |
||||
* not mandatory. CDC WMC devices are an example where functions often |
||||
* depend on other functions, with some functions subsidiary to others. |
||||
* Such interdependency may be managed in any way, so long as all of the |
||||
* descriptors complete by the time the composite driver returns from |
||||
* its bind() routine. |
||||
*/ |
||||
struct usb_configuration { |
||||
const char *label; |
||||
struct usb_gadget_strings **strings; |
||||
const struct usb_descriptor_header **descriptors; |
||||
|
||||
/* REVISIT: bind() functions can be marked __init, which
|
||||
* makes trouble for section mismatch analysis. See if |
||||
* we can't restructure things to avoid mismatching... |
||||
*/ |
||||
|
||||
/* configuration management: bind/unbind */ |
||||
int (*bind)(struct usb_configuration *); |
||||
void (*unbind)(struct usb_configuration *); |
||||
int (*setup)(struct usb_configuration *, |
||||
const struct usb_ctrlrequest *); |
||||
|
||||
/* fields in the config descriptor */ |
||||
u8 bConfigurationValue; |
||||
u8 iConfiguration; |
||||
u8 bmAttributes; |
||||
u8 bMaxPower; |
||||
|
||||
struct usb_composite_dev *cdev; |
||||
|
||||
/* private: */ |
||||
/* internals */ |
||||
struct list_head list; |
||||
struct list_head functions; |
||||
u8 next_interface_id; |
||||
unsigned highspeed:1; |
||||
unsigned fullspeed:1; |
||||
struct usb_function *interface[MAX_CONFIG_INTERFACES]; |
||||
}; |
||||
|
||||
int usb_add_config(struct usb_composite_dev *, |
||||
struct usb_configuration *); |
||||
|
||||
/**
|
||||
* struct usb_composite_driver - groups configurations into a gadget |
||||
* @name: For diagnostics, identifies the driver. |
||||
* @dev: Template descriptor for the device, including default device |
||||
* identifiers. |
||||
* @strings: tables of strings, keyed by identifiers assigned during bind() |
||||
* and language IDs provided in control requests |
||||
* @bind: (REQUIRED) Used to allocate resources that are shared across the |
||||
* whole device, such as string IDs, and add its configurations using |
||||
* @usb_add_config(). This may fail by returning a negative errno |
||||
* value; it should return zero on successful initialization. |
||||
* @unbind: Reverses @bind(); called as a side effect of unregistering |
||||
* this driver. |
||||
* @disconnect: optional driver disconnect method |
||||
* @suspend: Notifies when the host stops sending USB traffic, |
||||
* after function notifications |
||||
* @resume: Notifies configuration when the host restarts USB traffic, |
||||
* before function notifications |
||||
* |
||||
* Devices default to reporting self powered operation. Devices which rely |
||||
* on bus powered operation should report this in their @bind() method. |
||||
* |
||||
* Before returning from @bind, various fields in the template descriptor |
||||
* may be overridden. These include the idVendor/idProduct/bcdDevice values |
||||
* normally to bind the appropriate host side driver, and the three strings |
||||
* (iManufacturer, iProduct, iSerialNumber) normally used to provide user |
||||
* meaningful device identifiers. (The strings will not be defined unless |
||||
* they are defined in @dev and @strings.) The correct ep0 maxpacket size |
||||
* is also reported, as defined by the underlying controller driver. |
||||
*/ |
||||
struct usb_composite_driver { |
||||
const char *name; |
||||
const struct usb_device_descriptor *dev; |
||||
struct usb_gadget_strings **strings; |
||||
|
||||
/* REVISIT: bind() functions can be marked __init, which
|
||||
* makes trouble for section mismatch analysis. See if |
||||
* we can't restructure things to avoid mismatching... |
||||
*/ |
||||
|
||||
int (*bind)(struct usb_composite_dev *); |
||||
int (*unbind)(struct usb_composite_dev *); |
||||
|
||||
void (*disconnect)(struct usb_composite_dev *); |
||||
|
||||
/* global suspend hooks */ |
||||
void (*suspend)(struct usb_composite_dev *); |
||||
void (*resume)(struct usb_composite_dev *); |
||||
}; |
||||
|
||||
extern int usb_composite_register(struct usb_composite_driver *); |
||||
extern void usb_composite_unregister(struct usb_composite_driver *); |
||||
|
||||
|
||||
/**
|
||||
* struct usb_composite_device - represents one composite usb gadget |
||||
* @gadget: read-only, abstracts the gadget's usb peripheral controller |
||||
* @req: used for control responses; buffer is pre-allocated |
||||
* @bufsiz: size of buffer pre-allocated in @req |
||||
* @config: the currently active configuration |
||||
* |
||||
* One of these devices is allocated and initialized before the |
||||
* associated device driver's bind() is called. |
||||
* |
||||
* OPEN ISSUE: it appears that some WUSB devices will need to be |
||||
* built by combining a normal (wired) gadget with a wireless one. |
||||
* This revision of the gadget framework should probably try to make |
||||
* sure doing that won't hurt too much. |
||||
* |
||||
* One notion for how to handle Wireless USB devices involves: |
||||
* (a) a second gadget here, discovery mechanism TBD, but likely |
||||
* needing separate "register/unregister WUSB gadget" calls; |
||||
* (b) updates to usb_gadget to include flags "is it wireless", |
||||
* "is it wired", plus (presumably in a wrapper structure) |
||||
* bandgroup and PHY info; |
||||
* (c) presumably a wireless_ep wrapping a usb_ep, and reporting |
||||
* wireless-specific parameters like maxburst and maxsequence; |
||||
* (d) configurations that are specific to wireless links; |
||||
* (e) function drivers that understand wireless configs and will |
||||
* support wireless for (additional) function instances; |
||||
* (f) a function to support association setup (like CBAF), not |
||||
* necessarily requiring a wireless adapter; |
||||
* (g) composite device setup that can create one or more wireless |
||||
* configs, including appropriate association setup support; |
||||
* (h) more, TBD. |
||||
*/ |
||||
struct usb_composite_dev { |
||||
struct usb_gadget *gadget; |
||||
struct usb_request *req; |
||||
unsigned bufsiz; |
||||
|
||||
struct usb_configuration *config; |
||||
|
||||
/* private: */ |
||||
/* internals */ |
||||
unsigned int suspended:1; |
||||
struct usb_device_descriptor desc; |
||||
struct list_head configs; |
||||
struct usb_composite_driver *driver; |
||||
u8 next_string_id; |
||||
|
||||
/* the gadget driver won't enable the data pullup
|
||||
* while the deactivation count is nonzero. |
||||
*/ |
||||
unsigned deactivations; |
||||
}; |
||||
|
||||
extern int usb_string_id(struct usb_composite_dev *c); |
||||
extern int usb_string_ids_tab(struct usb_composite_dev *c, |
||||
struct usb_string *str); |
||||
extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n); |
||||
|
||||
#endif /* __LINUX_USB_COMPOSITE_H */ |
||||
Loading…
Reference in new issue