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omap_udc.h
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1 /*
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 
12 #define UDC_REV (UDC_BASE + 0x0) /* Revision */
13 #define UDC_EP_NUM (UDC_BASE + 0x4) /* Which endpoint */
14 # define UDC_SETUP_SEL (1 << 6)
15 # define UDC_EP_SEL (1 << 5)
16 # define UDC_EP_DIR (1 << 4)
17  /* low 4 bits for endpoint number */
18 #define UDC_DATA (UDC_BASE + 0x08) /* Endpoint FIFO */
19 #define UDC_CTRL (UDC_BASE + 0x0C) /* Endpoint control */
20 # define UDC_CLR_HALT (1 << 7)
21 # define UDC_SET_HALT (1 << 6)
22 # define UDC_CLRDATA_TOGGLE (1 << 3)
23 # define UDC_SET_FIFO_EN (1 << 2)
24 # define UDC_CLR_EP (1 << 1)
25 # define UDC_RESET_EP (1 << 0)
26 #define UDC_STAT_FLG (UDC_BASE + 0x10) /* Endpoint status */
27 # define UDC_NO_RXPACKET (1 << 15)
28 # define UDC_MISS_IN (1 << 14)
29 # define UDC_DATA_FLUSH (1 << 13)
30 # define UDC_ISO_ERR (1 << 12)
31 # define UDC_ISO_FIFO_EMPTY (1 << 9)
32 # define UDC_ISO_FIFO_FULL (1 << 8)
33 # define UDC_EP_HALTED (1 << 6)
34 # define UDC_STALL (1 << 5)
35 # define UDC_NAK (1 << 4)
36 # define UDC_ACK (1 << 3)
37 # define UDC_FIFO_EN (1 << 2)
38 # define UDC_NON_ISO_FIFO_EMPTY (1 << 1)
39 # define UDC_NON_ISO_FIFO_FULL (1 << 0)
40 #define UDC_RXFSTAT (UDC_BASE + 0x14) /* OUT bytecount */
41 #define UDC_SYSCON1 (UDC_BASE + 0x18) /* System config 1 */
42 # define UDC_CFG_LOCK (1 << 8)
43 # define UDC_DATA_ENDIAN (1 << 7)
44 # define UDC_DMA_ENDIAN (1 << 6)
45 # define UDC_NAK_EN (1 << 4)
46 # define UDC_AUTODECODE_DIS (1 << 3)
47 # define UDC_SELF_PWR (1 << 2)
48 # define UDC_SOFF_DIS (1 << 1)
49 # define UDC_PULLUP_EN (1 << 0)
50 #define UDC_SYSCON2 (UDC_BASE + 0x1C) /* System config 2 */
51 # define UDC_RMT_WKP (1 << 6)
52 # define UDC_STALL_CMD (1 << 5)
53 # define UDC_DEV_CFG (1 << 3)
54 # define UDC_CLR_CFG (1 << 2)
55 #define UDC_DEVSTAT (UDC_BASE + 0x20) /* Device status */
56 # define UDC_B_HNP_ENABLE (1 << 9)
57 # define UDC_A_HNP_SUPPORT (1 << 8)
58 # define UDC_A_ALT_HNP_SUPPORT (1 << 7)
59 # define UDC_R_WK_OK (1 << 6)
60 # define UDC_USB_RESET (1 << 5)
61 # define UDC_SUS (1 << 4)
62 # define UDC_CFG (1 << 3)
63 # define UDC_ADD (1 << 2)
64 # define UDC_DEF (1 << 1)
65 # define UDC_ATT (1 << 0)
66 #define UDC_SOF (UDC_BASE + 0x24) /* Start of frame */
67 # define UDC_FT_LOCK (1 << 12)
68 # define UDC_TS_OK (1 << 11)
69 # define UDC_TS 0x03ff
70 #define UDC_IRQ_EN (UDC_BASE + 0x28) /* Interrupt enable */
71 # define UDC_SOF_IE (1 << 7)
72 # define UDC_EPN_RX_IE (1 << 5)
73 # define UDC_EPN_TX_IE (1 << 4)
74 # define UDC_DS_CHG_IE (1 << 3)
75 # define UDC_EP0_IE (1 << 0)
76 #define UDC_DMA_IRQ_EN (UDC_BASE + 0x2C) /* DMA irq enable */
77  /* rx/tx dma channels numbered 1-3 not 0-2 */
78 # define UDC_TX_DONE_IE(n) (1 << (4 * (n) - 2))
79 # define UDC_RX_CNT_IE(n) (1 << (4 * (n) - 3))
80 # define UDC_RX_EOT_IE(n) (1 << (4 * (n) - 4))
81 #define UDC_IRQ_SRC (UDC_BASE + 0x30) /* Interrupt source */
82 # define UDC_TXN_DONE (1 << 10)
83 # define UDC_RXN_CNT (1 << 9)
84 # define UDC_RXN_EOT (1 << 8)
85 # define UDC_IRQ_SOF (1 << 7)
86 # define UDC_EPN_RX (1 << 5)
87 # define UDC_EPN_TX (1 << 4)
88 # define UDC_DS_CHG (1 << 3)
89 # define UDC_SETUP (1 << 2)
90 # define UDC_EP0_RX (1 << 1)
91 # define UDC_EP0_TX (1 << 0)
92 # define UDC_IRQ_SRC_MASK 0x7bf
93 #define UDC_EPN_STAT (UDC_BASE + 0x34) /* EP irq status */
94 #define UDC_DMAN_STAT (UDC_BASE + 0x38) /* DMA irq status */
95 # define UDC_DMA_RX_SB (1 << 12)
96 # define UDC_DMA_RX_SRC(x) (((x)>>8) & 0xf)
97 # define UDC_DMA_TX_SRC(x) (((x)>>0) & 0xf)
98 
99 
100 /* DMA configuration registers: up to three channels in each direction. */
101 #define UDC_RXDMA_CFG (UDC_BASE + 0x40) /* 3 eps for RX DMA */
102 # define UDC_DMA_REQ (1 << 12)
103 #define UDC_TXDMA_CFG (UDC_BASE + 0x44) /* 3 eps for TX DMA */
104 #define UDC_DATA_DMA (UDC_BASE + 0x48) /* rx/tx fifo addr */
105 
106 /* rx/tx dma control, numbering channels 1-3 not 0-2 */
107 #define UDC_TXDMA(chan) (UDC_BASE + 0x50 - 4 + 4 * (chan))
108 # define UDC_TXN_EOT (1 << 15) /* bytes vs packets */
109 # define UDC_TXN_START (1 << 14) /* start transfer */
110 # define UDC_TXN_TSC 0x03ff /* units in xfer */
111 #define UDC_RXDMA(chan) (UDC_BASE + 0x60 - 4 + 4 * (chan))
112 # define UDC_RXN_STOP (1 << 15) /* enable EOT irq */
113 # define UDC_RXN_TC 0x00ff /* packets in xfer */
114 
115 
116 /*
117  * Endpoint configuration registers (used before CFG_LOCK is set)
118  * UDC_EP_TX(0) is unused
119  */
120 #define UDC_EP_RX(endpoint) (UDC_BASE + 0x80 + (endpoint)*4)
121 # define UDC_EPN_RX_VALID (1 << 15)
122 # define UDC_EPN_RX_DB (1 << 14)
123  /* buffer size in bits 13, 12 */
124 # define UDC_EPN_RX_ISO (1 << 11)
125  /* buffer pointer in low 11 bits */
126 #define UDC_EP_TX(endpoint) (UDC_BASE + 0xc0 + (endpoint)*4)
127  /* same bitfields as in RX */
128 
129 /*-------------------------------------------------------------------------*/
130 
131 struct omap_req {
132  struct usb_request req;
133  struct list_head queue;
134  unsigned dma_bytes;
135  unsigned mapped:1;
136 };
137 
138 struct omap_ep {
139  struct usb_ep ep;
140  struct list_head queue;
141  unsigned long irqs;
142  struct list_head iso;
143  char name[14];
144  u16 maxpacket;
145  u8 bEndpointAddress;
146  u8 bmAttributes;
147  unsigned double_buf:1;
148  unsigned stopped:1;
149  unsigned fnf:1;
150  unsigned has_dma:1;
151  u8 ackwait;
152  u8 dma_channel;
153  u16 dma_counter;
154  int lch;
155  struct omap_udc *udc;
156  struct timer_list timer;
157 };
158 
159 struct omap_udc {
160  struct usb_gadget gadget;
161  struct usb_gadget_driver *driver;
162  spinlock_t lock;
163  struct omap_ep ep[32];
164  u16 devstat;
165  u16 clr_halt;
166  struct usb_phy *transceiver;
167  struct list_head iso;
168  unsigned softconnect:1;
169  unsigned vbus_active:1;
170  unsigned ep0_pending:1;
171  unsigned ep0_in:1;
172  unsigned ep0_set_config:1;
173  unsigned ep0_reset_config:1;
174  unsigned ep0_setup:1;
175  struct completion *done;
176  struct clk *dc_clk;
177  struct clk *hhc_clk;
178  unsigned clk_requested:1;
179 };
180 
181 /*-------------------------------------------------------------------------*/
182 
183 #ifdef VERBOSE
184 # define VDBG DBG
185 #else
186 # define VDBG(stuff...) do{}while(0)
187 #endif
188 
189 #define ERR(stuff...) pr_err("udc: " stuff)
190 #define WARNING(stuff...) pr_warning("udc: " stuff)
191 #define INFO(stuff...) pr_info("udc: " stuff)
192 #define DBG(stuff...) pr_debug("udc: " stuff)
193 
194 /*-------------------------------------------------------------------------*/
195 
196 /* MOD_CONF_CTRL_0 */
197 #define VBUS_W2FC_1510 (1 << 17) /* 0 gpio0, 1 dvdd2 pin */
198 
199 /* FUNC_MUX_CTRL_0 */
200 #define VBUS_CTRL_1510 (1 << 19) /* 1 connected (software) */
201 #define VBUS_MODE_1510 (1 << 18) /* 0 hardware, 1 software */
202 
203 #define HMC_1510 ((omap_readl(MOD_CONF_CTRL_0) >> 1) & 0x3f)
204 #define HMC_1610 (omap_readl(OTG_SYSCON_2) & 0x3f)
205 #define HMC (cpu_is_omap15xx() ? HMC_1510 : HMC_1610)
206 
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