Hao Wu | 453f775 | 2009-06-04 16:06:50 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Intel Langwell USB OTG transceiver driver |
| 3 | * Copyright (C) 2008, Intel Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | #ifndef __LANGWELL_OTG_H__ |
| 21 | #define __LANGWELL_OTG_H__ |
| 22 | |
| 23 | /* notify transceiver driver about OTG events */ |
| 24 | extern void langwell_update_transceiver(void); |
| 25 | /* HCD register bus driver */ |
| 26 | extern int langwell_register_host(struct pci_driver *host_driver); |
| 27 | /* HCD unregister bus driver */ |
| 28 | extern void langwell_unregister_host(struct pci_driver *host_driver); |
| 29 | /* DCD register bus driver */ |
| 30 | extern int langwell_register_peripheral(struct pci_driver *client_driver); |
| 31 | /* DCD unregister bus driver */ |
| 32 | extern void langwell_unregister_peripheral(struct pci_driver *client_driver); |
| 33 | /* No silent failure, output warning message */ |
| 34 | extern void langwell_otg_nsf_msg(unsigned long message); |
| 35 | |
| 36 | #define CI_USBCMD 0x30 |
| 37 | # define USBCMD_RST BIT(1) |
| 38 | # define USBCMD_RS BIT(0) |
| 39 | #define CI_USBSTS 0x34 |
| 40 | # define USBSTS_SLI BIT(8) |
| 41 | # define USBSTS_URI BIT(6) |
| 42 | # define USBSTS_PCI BIT(2) |
| 43 | #define CI_PORTSC1 0x74 |
| 44 | # define PORTSC_PP BIT(12) |
| 45 | # define PORTSC_LS (BIT(11) | BIT(10)) |
| 46 | # define PORTSC_SUSP BIT(7) |
| 47 | # define PORTSC_CCS BIT(0) |
| 48 | #define CI_HOSTPC1 0xb4 |
| 49 | # define HOSTPC1_PHCD BIT(22) |
| 50 | #define CI_OTGSC 0xf4 |
| 51 | # define OTGSC_DPIE BIT(30) |
| 52 | # define OTGSC_1MSE BIT(29) |
| 53 | # define OTGSC_BSEIE BIT(28) |
| 54 | # define OTGSC_BSVIE BIT(27) |
| 55 | # define OTGSC_ASVIE BIT(26) |
| 56 | # define OTGSC_AVVIE BIT(25) |
| 57 | # define OTGSC_IDIE BIT(24) |
| 58 | # define OTGSC_DPIS BIT(22) |
| 59 | # define OTGSC_1MSS BIT(21) |
| 60 | # define OTGSC_BSEIS BIT(20) |
| 61 | # define OTGSC_BSVIS BIT(19) |
| 62 | # define OTGSC_ASVIS BIT(18) |
| 63 | # define OTGSC_AVVIS BIT(17) |
| 64 | # define OTGSC_IDIS BIT(16) |
| 65 | # define OTGSC_DPS BIT(14) |
| 66 | # define OTGSC_1MST BIT(13) |
| 67 | # define OTGSC_BSE BIT(12) |
| 68 | # define OTGSC_BSV BIT(11) |
| 69 | # define OTGSC_ASV BIT(10) |
| 70 | # define OTGSC_AVV BIT(9) |
| 71 | # define OTGSC_ID BIT(8) |
| 72 | # define OTGSC_HABA BIT(7) |
| 73 | # define OTGSC_HADP BIT(6) |
| 74 | # define OTGSC_IDPU BIT(5) |
| 75 | # define OTGSC_DP BIT(4) |
| 76 | # define OTGSC_OT BIT(3) |
| 77 | # define OTGSC_HAAR BIT(2) |
| 78 | # define OTGSC_VC BIT(1) |
| 79 | # define OTGSC_VD BIT(0) |
| 80 | # define OTGSC_INTEN_MASK (0x7f << 24) |
| 81 | # define OTGSC_INTSTS_MASK (0x7f << 16) |
| 82 | #define CI_USBMODE 0xf8 |
| 83 | # define USBMODE_CM (BIT(1) | BIT(0)) |
| 84 | # define USBMODE_IDLE 0 |
| 85 | # define USBMODE_DEVICE 0x2 |
| 86 | # define USBMODE_HOST 0x3 |
| 87 | |
| 88 | #define INTR_DUMMY_MASK (USBSTS_SLI | USBSTS_URI | USBSTS_PCI) |
| 89 | |
| 90 | struct otg_hsm { |
| 91 | /* Input */ |
| 92 | int a_bus_resume; |
| 93 | int a_bus_suspend; |
| 94 | int a_conn; |
| 95 | int a_sess_vld; |
| 96 | int a_srp_det; |
| 97 | int a_vbus_vld; |
| 98 | int b_bus_resume; |
| 99 | int b_bus_suspend; |
| 100 | int b_conn; |
| 101 | int b_se0_srp; |
| 102 | int b_sess_end; |
| 103 | int b_sess_vld; |
| 104 | int id; |
| 105 | |
| 106 | /* Internal variables */ |
| 107 | int a_set_b_hnp_en; |
| 108 | int b_srp_done; |
| 109 | int b_hnp_enable; |
| 110 | |
| 111 | /* Timeout indicator for timers */ |
| 112 | int a_wait_vrise_tmout; |
| 113 | int a_wait_bcon_tmout; |
| 114 | int a_aidl_bdis_tmout; |
| 115 | int b_ase0_brst_tmout; |
| 116 | int b_bus_suspend_tmout; |
| 117 | int b_srp_res_tmout; |
| 118 | |
| 119 | /* Informative variables */ |
| 120 | int a_bus_drop; |
| 121 | int a_bus_req; |
| 122 | int a_clr_err; |
| 123 | int a_suspend_req; |
| 124 | int b_bus_req; |
| 125 | |
| 126 | /* Output */ |
| 127 | int drv_vbus; |
| 128 | int loc_conn; |
| 129 | int loc_sof; |
| 130 | |
| 131 | /* Others */ |
| 132 | int b_bus_suspend_vld; |
| 133 | }; |
| 134 | |
| 135 | #define TA_WAIT_VRISE 100 |
| 136 | #define TA_WAIT_BCON 30000 |
| 137 | #define TA_AIDL_BDIS 15000 |
| 138 | #define TB_ASE0_BRST 5000 |
| 139 | #define TB_SE0_SRP 2 |
| 140 | #define TB_SRP_RES 100 |
| 141 | #define TB_BUS_SUSPEND 500 |
| 142 | |
| 143 | struct langwell_otg_timer { |
| 144 | unsigned long expires; /* Number of count increase to timeout */ |
| 145 | unsigned long count; /* Tick counter */ |
| 146 | void (*function)(unsigned long); /* Timeout function */ |
| 147 | unsigned long data; /* Data passed to function */ |
| 148 | struct list_head list; |
| 149 | }; |
| 150 | |
| 151 | struct langwell_otg { |
| 152 | struct otg_transceiver otg; |
| 153 | struct otg_hsm hsm; |
| 154 | void __iomem *regs; |
| 155 | unsigned region; |
| 156 | struct pci_driver *host_ops; |
| 157 | struct pci_driver *client_ops; |
| 158 | struct pci_dev *pdev; |
| 159 | struct work_struct work; |
| 160 | struct workqueue_struct *qwork; |
| 161 | spinlock_t lock; |
| 162 | spinlock_t wq_lock; |
| 163 | }; |
| 164 | |
| 165 | static inline struct langwell_otg *otg_to_langwell(struct otg_transceiver *otg) |
| 166 | { |
| 167 | return container_of(otg, struct langwell_otg, otg); |
| 168 | } |
| 169 | |
| 170 | #ifdef DEBUG |
| 171 | #define otg_dbg(fmt, args...) \ |
| 172 | printk(KERN_DEBUG fmt , ## args) |
| 173 | #else |
| 174 | #define otg_dbg(fmt, args...) \ |
| 175 | do { } while (0) |
| 176 | #endif /* DEBUG */ |
| 177 | #endif /* __LANGWELL_OTG_H__ */ |