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USB OTG: Add common data structure for Intel MID Platform (Langwell/P…
…enwell) This patch adds one new header file for the common data structure used in Intel Penwell/Langwell MID Platform OTG Transceiver drivers. After switched to the common data structure, Langwell/Penwell OTG Transceiver driver will provide an unified interface to host/client driver. Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Hao Wu <hao.wu@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Oct 22, 2010
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| /* | ||
| * Intel MID (Langwell/Penwell) USB OTG Transceiver driver | ||
| * Copyright (C) 2008 - 2010, Intel Corporation. | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify it | ||
| * under the terms and conditions of the GNU General Public License, | ||
| * version 2, as published by the Free Software Foundation. | ||
| * | ||
| * This program is distributed in the hope 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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| #ifndef __INTEL_MID_OTG_H | ||
| #define __INTEL_MID_OTG_H | ||
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| #include <linux/pm.h> | ||
| #include <linux/usb/otg.h> | ||
| #include <linux/notifier.h> | ||
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| struct intel_mid_otg_xceiv; | ||
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| /* This is a common data structure for Intel MID platform to | ||
| * save values of the OTG state machine */ | ||
| struct otg_hsm { | ||
| /* Input */ | ||
| int a_bus_resume; | ||
| int a_bus_suspend; | ||
| int a_conn; | ||
| int a_sess_vld; | ||
| int a_srp_det; | ||
| int a_vbus_vld; | ||
| int b_bus_resume; | ||
| int b_bus_suspend; | ||
| int b_conn; | ||
| int b_se0_srp; | ||
| int b_ssend_srp; | ||
| int b_sess_end; | ||
| int b_sess_vld; | ||
| int id; | ||
| /* id values */ | ||
| #define ID_B 0x05 | ||
| #define ID_A 0x04 | ||
| #define ID_ACA_C 0x03 | ||
| #define ID_ACA_B 0x02 | ||
| #define ID_ACA_A 0x01 | ||
| int power_up; | ||
| int adp_change; | ||
| int test_device; | ||
|
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| /* Internal variables */ | ||
| int a_set_b_hnp_en; | ||
| int b_srp_done; | ||
| int b_hnp_enable; | ||
| int hnp_poll_enable; | ||
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| /* Timeout indicator for timers */ | ||
| int a_wait_vrise_tmout; | ||
| int a_wait_bcon_tmout; | ||
| int a_aidl_bdis_tmout; | ||
| int a_bidl_adis_tmout; | ||
| int a_bidl_adis_tmr; | ||
| int a_wait_vfall_tmout; | ||
| int b_ase0_brst_tmout; | ||
| int b_bus_suspend_tmout; | ||
| int b_srp_init_tmout; | ||
| int b_srp_fail_tmout; | ||
| int b_srp_fail_tmr; | ||
| int b_adp_sense_tmout; | ||
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| /* Informative variables */ | ||
| int a_bus_drop; | ||
| int a_bus_req; | ||
| int a_clr_err; | ||
| int b_bus_req; | ||
| int a_suspend_req; | ||
| int b_bus_suspend_vld; | ||
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| /* Output */ | ||
| int drv_vbus; | ||
| int loc_conn; | ||
| int loc_sof; | ||
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| /* Others */ | ||
| int vbus_srp_up; | ||
| }; | ||
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| /* must provide ULPI access function to read/write registers implemented in | ||
| * ULPI address space */ | ||
| struct iotg_ulpi_access_ops { | ||
| int (*read)(struct intel_mid_otg_xceiv *iotg, u8 reg, u8 *val); | ||
| int (*write)(struct intel_mid_otg_xceiv *iotg, u8 reg, u8 val); | ||
| }; | ||
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| #define OTG_A_DEVICE 0x0 | ||
| #define OTG_B_DEVICE 0x1 | ||
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| /* | ||
| * the Intel MID (Langwell/Penwell) otg transceiver driver needs to interact | ||
| * with device and host drivers to implement the USB OTG related feature. More | ||
| * function members are added based on otg_transceiver data structure for this | ||
| * purpose. | ||
| */ | ||
| struct intel_mid_otg_xceiv { | ||
| struct otg_transceiver otg; | ||
| struct otg_hsm hsm; | ||
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| /* base address */ | ||
| void __iomem *base; | ||
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| /* ops to access ulpi */ | ||
| struct iotg_ulpi_access_ops ulpi_ops; | ||
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| /* atomic notifier for interrupt context */ | ||
| struct atomic_notifier_head iotg_notifier; | ||
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| /* start/stop USB Host function */ | ||
| int (*start_host)(struct intel_mid_otg_xceiv *iotg); | ||
| int (*stop_host)(struct intel_mid_otg_xceiv *iotg); | ||
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| /* start/stop USB Peripheral function */ | ||
| int (*start_peripheral)(struct intel_mid_otg_xceiv *iotg); | ||
| int (*stop_peripheral)(struct intel_mid_otg_xceiv *iotg); | ||
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| /* start/stop ADP sense/probe function */ | ||
| int (*set_adp_probe)(struct intel_mid_otg_xceiv *iotg, | ||
| bool enabled, int dev); | ||
| int (*set_adp_sense)(struct intel_mid_otg_xceiv *iotg, | ||
| bool enabled); | ||
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| #ifdef CONFIG_PM | ||
| /* suspend/resume USB host function */ | ||
| int (*suspend_host)(struct intel_mid_otg_xceiv *iotg, | ||
| pm_message_t message); | ||
| int (*resume_host)(struct intel_mid_otg_xceiv *iotg); | ||
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| int (*suspend_peripheral)(struct intel_mid_otg_xceiv *iotg, | ||
| pm_message_t message); | ||
| int (*resume_peripheral)(struct intel_mid_otg_xceiv *iotg); | ||
| #endif | ||
|
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| }; | ||
| static inline | ||
| struct intel_mid_otg_xceiv *otg_to_mid_xceiv(struct otg_transceiver *otg) | ||
| { | ||
| return container_of(otg, struct intel_mid_otg_xceiv, otg); | ||
| } | ||
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| #define MID_OTG_NOTIFY_CONNECT 0x0001 | ||
| #define MID_OTG_NOTIFY_DISCONN 0x0002 | ||
| #define MID_OTG_NOTIFY_HSUSPEND 0x0003 | ||
| #define MID_OTG_NOTIFY_HRESUME 0x0004 | ||
| #define MID_OTG_NOTIFY_CSUSPEND 0x0005 | ||
| #define MID_OTG_NOTIFY_CRESUME 0x0006 | ||
| #define MID_OTG_NOTIFY_HOSTADD 0x0007 | ||
| #define MID_OTG_NOTIFY_HOSTREMOVE 0x0008 | ||
| #define MID_OTG_NOTIFY_CLIENTADD 0x0009 | ||
| #define MID_OTG_NOTIFY_CLIENTREMOVE 0x000a | ||
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| static inline int | ||
| intel_mid_otg_register_notifier(struct intel_mid_otg_xceiv *iotg, | ||
| struct notifier_block *nb) | ||
| { | ||
| return atomic_notifier_chain_register(&iotg->iotg_notifier, nb); | ||
| } | ||
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| static inline void | ||
| intel_mid_otg_unregister_notifier(struct intel_mid_otg_xceiv *iotg, | ||
| struct notifier_block *nb) | ||
| { | ||
| atomic_notifier_chain_unregister(&iotg->iotg_notifier, nb); | ||
| } | ||
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| #endif /* __INTEL_MID_OTG_H */ |