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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * omap_udc.h -- for omap 3.2 udc, with OTG support
3 *
4 * 2004 (C) Texas Instruments, Inc.
5 * 2004 (C) David Brownell
6 */
7
8/*
9 * USB device/endpoint management registers
10 */
11#define UDC_REG(offset) __REG16(UDC_BASE + (offset))
12
13#define UDC_REV_REG UDC_REG(0x0) /* Revision */
14#define UDC_EP_NUM_REG UDC_REG(0x4) /* Which endpoint */
15# define UDC_SETUP_SEL (1 << 6)
16# define UDC_EP_SEL (1 << 5)
17# define UDC_EP_DIR (1 << 4)
18 /* low 4 bits for endpoint number */
19#define UDC_DATA_REG UDC_REG(0x08) /* Endpoint FIFO */
20#define UDC_CTRL_REG UDC_REG(0x0C) /* Endpoint control */
21# define UDC_CLR_HALT (1 << 7)
22# define UDC_SET_HALT (1 << 6)
David Brownell65111082005-04-28 13:52:31 -070023# define UDC_CLRDATA_TOGGLE (1 << 3)
Linus Torvalds1da177e2005-04-16 15:20:36 -070024# define UDC_SET_FIFO_EN (1 << 2)
25# define UDC_CLR_EP (1 << 1)
26# define UDC_RESET_EP (1 << 0)
27#define UDC_STAT_FLG_REG UDC_REG(0x10) /* Endpoint status */
28# define UDC_NO_RXPACKET (1 << 15)
29# define UDC_MISS_IN (1 << 14)
30# define UDC_DATA_FLUSH (1 << 13)
31# define UDC_ISO_ERR (1 << 12)
32# define UDC_ISO_FIFO_EMPTY (1 << 9)
33# define UDC_ISO_FIFO_FULL (1 << 8)
34# define UDC_EP_HALTED (1 << 6)
35# define UDC_STALL (1 << 5)
36# define UDC_NAK (1 << 4)
37# define UDC_ACK (1 << 3)
38# define UDC_FIFO_EN (1 << 2)
39# define UDC_NON_ISO_FIFO_EMPTY (1 << 1)
40# define UDC_NON_ISO_FIFO_FULL (1 << 0)
41#define UDC_RXFSTAT_REG UDC_REG(0x14) /* OUT bytecount */
42#define UDC_SYSCON1_REG UDC_REG(0x18) /* System config 1 */
43# define UDC_CFG_LOCK (1 << 8)
44# define UDC_DATA_ENDIAN (1 << 7)
45# define UDC_DMA_ENDIAN (1 << 6)
46# define UDC_NAK_EN (1 << 4)
47# define UDC_AUTODECODE_DIS (1 << 3)
48# define UDC_SELF_PWR (1 << 2)
49# define UDC_SOFF_DIS (1 << 1)
50# define UDC_PULLUP_EN (1 << 0)
51#define UDC_SYSCON2_REG UDC_REG(0x1C) /* System config 2 */
52# define UDC_RMT_WKP (1 << 6)
53# define UDC_STALL_CMD (1 << 5)
54# define UDC_DEV_CFG (1 << 3)
55# define UDC_CLR_CFG (1 << 2)
56#define UDC_DEVSTAT_REG UDC_REG(0x20) /* Device status */
57# define UDC_B_HNP_ENABLE (1 << 9)
58# define UDC_A_HNP_SUPPORT (1 << 8)
59# define UDC_A_ALT_HNP_SUPPORT (1 << 7)
60# define UDC_R_WK_OK (1 << 6)
61# define UDC_USB_RESET (1 << 5)
62# define UDC_SUS (1 << 4)
63# define UDC_CFG (1 << 3)
64# define UDC_ADD (1 << 2)
65# define UDC_DEF (1 << 1)
66# define UDC_ATT (1 << 0)
67#define UDC_SOF_REG UDC_REG(0x24) /* Start of frame */
68# define UDC_FT_LOCK (1 << 12)
69# define UDC_TS_OK (1 << 11)
70# define UDC_TS 0x03ff
71#define UDC_IRQ_EN_REG UDC_REG(0x28) /* Interrupt enable */
72# define UDC_SOF_IE (1 << 7)
73# define UDC_EPN_RX_IE (1 << 5)
74# define UDC_EPN_TX_IE (1 << 4)
75# define UDC_DS_CHG_IE (1 << 3)
76# define UDC_EP0_IE (1 << 0)
77#define UDC_DMA_IRQ_EN_REG UDC_REG(0x2C) /* DMA irq enable */
78 /* rx/tx dma channels numbered 1-3 not 0-2 */
79# define UDC_TX_DONE_IE(n) (1 << (4 * (n) - 2))
80# define UDC_RX_CNT_IE(n) (1 << (4 * (n) - 3))
81# define UDC_RX_EOT_IE(n) (1 << (4 * (n) - 4))
82#define UDC_IRQ_SRC_REG UDC_REG(0x30) /* Interrupt source */
83# define UDC_TXN_DONE (1 << 10)
84# define UDC_RXN_CNT (1 << 9)
85# define UDC_RXN_EOT (1 << 8)
86# define UDC_SOF (1 << 7)
87# define UDC_EPN_RX (1 << 5)
88# define UDC_EPN_TX (1 << 4)
89# define UDC_DS_CHG (1 << 3)
90# define UDC_SETUP (1 << 2)
91# define UDC_EP0_RX (1 << 1)
92# define UDC_EP0_TX (1 << 0)
93# define UDC_IRQ_SRC_MASK 0x7bf
94#define UDC_EPN_STAT_REG UDC_REG(0x34) /* EP irq status */
95#define UDC_DMAN_STAT_REG UDC_REG(0x38) /* DMA irq status */
96# define UDC_DMA_RX_SB (1 << 12)
97# define UDC_DMA_RX_SRC(x) (((x)>>8) & 0xf)
98# define UDC_DMA_TX_SRC(x) (((x)>>0) & 0xf)
99
100
101/* DMA configuration registers: up to three channels in each direction. */
102#define UDC_RXDMA_CFG_REG UDC_REG(0x40) /* 3 eps for RX DMA */
David Brownell65111082005-04-28 13:52:31 -0700103# define UDC_DMA_REQ (1 << 12)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104#define UDC_TXDMA_CFG_REG UDC_REG(0x44) /* 3 eps for TX DMA */
105#define UDC_DATA_DMA_REG UDC_REG(0x48) /* rx/tx fifo addr */
106
107/* rx/tx dma control, numbering channels 1-3 not 0-2 */
108#define UDC_TXDMA_REG(chan) UDC_REG(0x50 - 4 + 4 * (chan))
109# define UDC_TXN_EOT (1 << 15) /* bytes vs packets */
110# define UDC_TXN_START (1 << 14) /* start transfer */
111# define UDC_TXN_TSC 0x03ff /* units in xfer */
112#define UDC_RXDMA_REG(chan) UDC_REG(0x60 - 4 + 4 * (chan))
113# define UDC_RXN_STOP (1 << 15) /* enable EOT irq */
114# define UDC_RXN_TC 0x00ff /* packets in xfer */
115
116
117/*
118 * Endpoint configuration registers (used before CFG_LOCK is set)
119 * UDC_EP_TX_REG(0) is unused
120 */
121#define UDC_EP_RX_REG(endpoint) UDC_REG(0x80 + (endpoint)*4)
122# define UDC_EPN_RX_VALID (1 << 15)
123# define UDC_EPN_RX_DB (1 << 14)
124 /* buffer size in bits 13, 12 */
125# define UDC_EPN_RX_ISO (1 << 11)
126 /* buffer pointer in low 11 bits */
127#define UDC_EP_TX_REG(endpoint) UDC_REG(0xc0 + (endpoint)*4)
128 /* same bitfields as in RX_REG */
129
130/*-------------------------------------------------------------------------*/
131
132struct omap_req {
133 struct usb_request req;
134 struct list_head queue;
135 unsigned dma_bytes;
136 unsigned mapped:1;
137};
138
139struct omap_ep {
140 struct usb_ep ep;
141 struct list_head queue;
142 unsigned long irqs;
143 struct list_head iso;
144 const struct usb_endpoint_descriptor *desc;
145 char name[14];
146 u16 maxpacket;
147 u8 bEndpointAddress;
148 u8 bmAttributes;
149 unsigned double_buf:1;
150 unsigned stopped:1;
151 unsigned fnf:1;
152 unsigned has_dma:1;
153 u8 ackwait;
154 u8 dma_channel;
155 u16 dma_counter;
156 int lch;
157 struct omap_udc *udc;
158 struct timer_list timer;
159};
160
161struct omap_udc {
162 struct usb_gadget gadget;
163 struct usb_gadget_driver *driver;
164 spinlock_t lock;
165 struct omap_ep ep[32];
166 u16 devstat;
David Brownell65111082005-04-28 13:52:31 -0700167 u16 clr_halt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 struct otg_transceiver *transceiver;
169 struct list_head iso;
170 unsigned softconnect:1;
171 unsigned vbus_active:1;
172 unsigned ep0_pending:1;
173 unsigned ep0_in:1;
174 unsigned ep0_set_config:1;
175 unsigned ep0_reset_config:1;
176 unsigned ep0_setup:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 struct completion *done;
David Brownelle6a6e472006-12-10 11:47:04 -0800178 struct clk *dc_clk;
179 struct clk *hhc_clk;
180 unsigned clk_requested:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181};
182
183/*-------------------------------------------------------------------------*/
184
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185#ifdef VERBOSE
186# define VDBG DBG
187#else
188# define VDBG(stuff...) do{}while(0)
189#endif
190
David Brownell00274922007-11-19 12:58:36 -0800191#define ERR(stuff...) pr_err("udc: " stuff)
192#define WARN(stuff...) pr_warning("udc: " stuff)
193#define INFO(stuff...) pr_info("udc: " stuff)
194#define DBG(stuff...) pr_debug("udc: " stuff)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196/*-------------------------------------------------------------------------*/
197
198#define MOD_CONF_CTRL_0_REG __REG32(MOD_CONF_CTRL_0)
199#define VBUS_W2FC_1510 (1 << 17) /* 0 gpio0, 1 dvdd2 pin */
200
201#define FUNC_MUX_CTRL_0_REG __REG32(FUNC_MUX_CTRL_0)
202#define VBUS_CTRL_1510 (1 << 19) /* 1 connected (software) */
203#define VBUS_MODE_1510 (1 << 18) /* 0 hardware, 1 software */
204
205#define HMC_1510 ((MOD_CONF_CTRL_0_REG >> 1) & 0x3f)
206#define HMC_1610 (OTG_SYSCON_2_REG & 0x3f)
207#define HMC (cpu_is_omap15xx() ? HMC_1510 : HMC_1610)
208