xref: /openbmc/linux/drivers/usb/phy/phy-fsl-usb.h (revision bbb774d9) 
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. */
3 
4 #include <linux/usb/otg-fsm.h>
5 #include <linux/usb/otg.h>
6 #include <linux/ioctl.h>
7 
8 /* USB Command Register Bit Masks */
9 #define USB_CMD_RUN_STOP		(0x1<<0)
10 #define USB_CMD_CTRL_RESET		(0x1<<1)
11 #define USB_CMD_PERIODIC_SCHEDULE_EN	(0x1<<4)
12 #define USB_CMD_ASYNC_SCHEDULE_EN	(0x1<<5)
13 #define USB_CMD_INT_AA_DOORBELL		(0x1<<6)
14 #define USB_CMD_ASP			(0x3<<8)
15 #define USB_CMD_ASYNC_SCH_PARK_EN	(0x1<<11)
16 #define USB_CMD_SUTW			(0x1<<13)
17 #define USB_CMD_ATDTW			(0x1<<14)
18 #define USB_CMD_ITC			(0xFF<<16)
19 
20 /* bit 15,3,2 are frame list size */
21 #define USB_CMD_FRAME_SIZE_1024		(0x0<<15 | 0x0<<2)
22 #define USB_CMD_FRAME_SIZE_512		(0x0<<15 | 0x1<<2)
23 #define USB_CMD_FRAME_SIZE_256		(0x0<<15 | 0x2<<2)
24 #define USB_CMD_FRAME_SIZE_128		(0x0<<15 | 0x3<<2)
25 #define USB_CMD_FRAME_SIZE_64		(0x1<<15 | 0x0<<2)
26 #define USB_CMD_FRAME_SIZE_32		(0x1<<15 | 0x1<<2)
27 #define USB_CMD_FRAME_SIZE_16		(0x1<<15 | 0x2<<2)
28 #define USB_CMD_FRAME_SIZE_8		(0x1<<15 | 0x3<<2)
29 
30 /* bit 9-8 are async schedule park mode count */
31 #define USB_CMD_ASP_00			(0x0<<8)
32 #define USB_CMD_ASP_01			(0x1<<8)
33 #define USB_CMD_ASP_10			(0x2<<8)
34 #define USB_CMD_ASP_11			(0x3<<8)
35 #define USB_CMD_ASP_BIT_POS		(8)
36 
37 /* bit 23-16 are interrupt threshold control */
38 #define USB_CMD_ITC_NO_THRESHOLD	(0x00<<16)
39 #define USB_CMD_ITC_1_MICRO_FRM		(0x01<<16)
40 #define USB_CMD_ITC_2_MICRO_FRM		(0x02<<16)
41 #define USB_CMD_ITC_4_MICRO_FRM		(0x04<<16)
42 #define USB_CMD_ITC_8_MICRO_FRM		(0x08<<16)
43 #define USB_CMD_ITC_16_MICRO_FRM	(0x10<<16)
44 #define USB_CMD_ITC_32_MICRO_FRM	(0x20<<16)
45 #define USB_CMD_ITC_64_MICRO_FRM	(0x40<<16)
46 #define USB_CMD_ITC_BIT_POS		(16)
47 
48 /* USB Status Register Bit Masks */
49 #define USB_STS_INT			(0x1<<0)
50 #define USB_STS_ERR			(0x1<<1)
51 #define USB_STS_PORT_CHANGE		(0x1<<2)
52 #define USB_STS_FRM_LST_ROLL		(0x1<<3)
53 #define USB_STS_SYS_ERR			(0x1<<4)
54 #define USB_STS_IAA			(0x1<<5)
55 #define USB_STS_RESET_RECEIVED		(0x1<<6)
56 #define USB_STS_SOF			(0x1<<7)
57 #define USB_STS_DCSUSPEND		(0x1<<8)
58 #define USB_STS_HC_HALTED		(0x1<<12)
59 #define USB_STS_RCL			(0x1<<13)
60 #define USB_STS_PERIODIC_SCHEDULE	(0x1<<14)
61 #define USB_STS_ASYNC_SCHEDULE		(0x1<<15)
62 
63 /* USB Interrupt Enable Register Bit Masks */
64 #define USB_INTR_INT_EN			(0x1<<0)
65 #define USB_INTR_ERR_INT_EN		(0x1<<1)
66 #define USB_INTR_PC_DETECT_EN		(0x1<<2)
67 #define USB_INTR_FRM_LST_ROLL_EN	(0x1<<3)
68 #define USB_INTR_SYS_ERR_EN		(0x1<<4)
69 #define USB_INTR_ASYN_ADV_EN		(0x1<<5)
70 #define USB_INTR_RESET_EN		(0x1<<6)
71 #define USB_INTR_SOF_EN			(0x1<<7)
72 #define USB_INTR_DEVICE_SUSPEND		(0x1<<8)
73 
74 /* Device Address bit masks */
75 #define USB_DEVICE_ADDRESS_MASK		(0x7F<<25)
76 #define USB_DEVICE_ADDRESS_BIT_POS	(25)
77 /* PORTSC  Register Bit Masks,Only one PORT in OTG mode*/
78 #define PORTSC_CURRENT_CONNECT_STATUS	(0x1<<0)
79 #define PORTSC_CONNECT_STATUS_CHANGE	(0x1<<1)
80 #define PORTSC_PORT_ENABLE		(0x1<<2)
81 #define PORTSC_PORT_EN_DIS_CHANGE	(0x1<<3)
82 #define PORTSC_OVER_CURRENT_ACT		(0x1<<4)
83 #define PORTSC_OVER_CUURENT_CHG		(0x1<<5)
84 #define PORTSC_PORT_FORCE_RESUME	(0x1<<6)
85 #define PORTSC_PORT_SUSPEND		(0x1<<7)
86 #define PORTSC_PORT_RESET		(0x1<<8)
87 #define PORTSC_LINE_STATUS_BITS		(0x3<<10)
88 #define PORTSC_PORT_POWER		(0x1<<12)
89 #define PORTSC_PORT_INDICTOR_CTRL	(0x3<<14)
90 #define PORTSC_PORT_TEST_CTRL		(0xF<<16)
91 #define PORTSC_WAKE_ON_CONNECT_EN	(0x1<<20)
92 #define PORTSC_WAKE_ON_CONNECT_DIS	(0x1<<21)
93 #define PORTSC_WAKE_ON_OVER_CURRENT	(0x1<<22)
94 #define PORTSC_PHY_LOW_POWER_SPD	(0x1<<23)
95 #define PORTSC_PORT_FORCE_FULL_SPEED	(0x1<<24)
96 #define PORTSC_PORT_SPEED_MASK		(0x3<<26)
97 #define PORTSC_TRANSCEIVER_WIDTH	(0x1<<28)
98 #define PORTSC_PHY_TYPE_SEL		(0x3<<30)
99 /* bit 11-10 are line status */
100 #define PORTSC_LINE_STATUS_SE0		(0x0<<10)
101 #define PORTSC_LINE_STATUS_JSTATE	(0x1<<10)
102 #define PORTSC_LINE_STATUS_KSTATE	(0x2<<10)
103 #define PORTSC_LINE_STATUS_UNDEF	(0x3<<10)
104 #define PORTSC_LINE_STATUS_BIT_POS	(10)
105 
106 /* bit 15-14 are port indicator control */
107 #define PORTSC_PIC_OFF			(0x0<<14)
108 #define PORTSC_PIC_AMBER		(0x1<<14)
109 #define PORTSC_PIC_GREEN		(0x2<<14)
110 #define PORTSC_PIC_UNDEF		(0x3<<14)
111 #define PORTSC_PIC_BIT_POS		(14)
112 
113 /* bit 19-16 are port test control */
114 #define PORTSC_PTC_DISABLE		(0x0<<16)
115 #define PORTSC_PTC_JSTATE		(0x1<<16)
116 #define PORTSC_PTC_KSTATE		(0x2<<16)
117 #define PORTSC_PTC_SEQNAK		(0x3<<16)
118 #define PORTSC_PTC_PACKET		(0x4<<16)
119 #define PORTSC_PTC_FORCE_EN		(0x5<<16)
120 #define PORTSC_PTC_BIT_POS		(16)
121 
122 /* bit 27-26 are port speed */
123 #define PORTSC_PORT_SPEED_FULL		(0x0<<26)
124 #define PORTSC_PORT_SPEED_LOW		(0x1<<26)
125 #define PORTSC_PORT_SPEED_HIGH		(0x2<<26)
126 #define PORTSC_PORT_SPEED_UNDEF		(0x3<<26)
127 #define PORTSC_SPEED_BIT_POS		(26)
128 
129 /* bit 28 is parallel transceiver width for UTMI interface */
130 #define PORTSC_PTW			(0x1<<28)
131 #define PORTSC_PTW_8BIT			(0x0<<28)
132 #define PORTSC_PTW_16BIT		(0x1<<28)
133 
134 /* bit 31-30 are port transceiver select */
135 #define PORTSC_PTS_UTMI			(0x0<<30)
136 #define PORTSC_PTS_ULPI			(0x2<<30)
137 #define PORTSC_PTS_FSLS_SERIAL		(0x3<<30)
138 #define PORTSC_PTS_BIT_POS		(30)
139 
140 #define PORTSC_W1C_BITS			\
141 	(PORTSC_CONNECT_STATUS_CHANGE |	\
142 	 PORTSC_PORT_EN_DIS_CHANGE    |	\
143 	 PORTSC_OVER_CUURENT_CHG)
144 
145 /* OTG Status Control Register Bit Masks */
146 #define OTGSC_CTRL_VBUS_DISCHARGE	(0x1<<0)
147 #define OTGSC_CTRL_VBUS_CHARGE		(0x1<<1)
148 #define OTGSC_CTRL_OTG_TERMINATION	(0x1<<3)
149 #define OTGSC_CTRL_DATA_PULSING		(0x1<<4)
150 #define OTGSC_CTRL_ID_PULL_EN		(0x1<<5)
151 #define OTGSC_HA_DATA_PULSE		(0x1<<6)
152 #define OTGSC_HA_BA			(0x1<<7)
153 #define OTGSC_STS_USB_ID		(0x1<<8)
154 #define OTGSC_STS_A_VBUS_VALID		(0x1<<9)
155 #define OTGSC_STS_A_SESSION_VALID	(0x1<<10)
156 #define OTGSC_STS_B_SESSION_VALID	(0x1<<11)
157 #define OTGSC_STS_B_SESSION_END		(0x1<<12)
158 #define OTGSC_STS_1MS_TOGGLE		(0x1<<13)
159 #define OTGSC_STS_DATA_PULSING		(0x1<<14)
160 #define OTGSC_INTSTS_USB_ID		(0x1<<16)
161 #define OTGSC_INTSTS_A_VBUS_VALID	(0x1<<17)
162 #define OTGSC_INTSTS_A_SESSION_VALID	(0x1<<18)
163 #define OTGSC_INTSTS_B_SESSION_VALID	(0x1<<19)
164 #define OTGSC_INTSTS_B_SESSION_END	(0x1<<20)
165 #define OTGSC_INTSTS_1MS		(0x1<<21)
166 #define OTGSC_INTSTS_DATA_PULSING	(0x1<<22)
167 #define OTGSC_INTR_USB_ID_EN		(0x1<<24)
168 #define OTGSC_INTR_A_VBUS_VALID_EN	(0x1<<25)
169 #define OTGSC_INTR_A_SESSION_VALID_EN	(0x1<<26)
170 #define OTGSC_INTR_B_SESSION_VALID_EN	(0x1<<27)
171 #define OTGSC_INTR_B_SESSION_END_EN	(0x1<<28)
172 #define OTGSC_INTR_1MS_TIMER_EN		(0x1<<29)
173 #define OTGSC_INTR_DATA_PULSING_EN	(0x1<<30)
174 #define OTGSC_INTSTS_MASK		(0x00ff0000)
175 
176 /* USB MODE Register Bit Masks */
177 #define  USB_MODE_CTRL_MODE_IDLE	(0x0<<0)
178 #define  USB_MODE_CTRL_MODE_DEVICE	(0x2<<0)
179 #define  USB_MODE_CTRL_MODE_HOST	(0x3<<0)
180 #define  USB_MODE_CTRL_MODE_RSV		(0x1<<0)
181 #define  USB_MODE_SETUP_LOCK_OFF	(0x1<<3)
182 #define  USB_MODE_STREAM_DISABLE	(0x1<<4)
183 #define  USB_MODE_ES			(0x1<<2) /* Endian Select */
184 
185 /* control Register Bit Masks */
186 #define  USB_CTRL_IOENB			(0x1<<2)
187 #define  USB_CTRL_ULPI_INT0EN		(0x1<<0)
188 
189 /* BCSR5 */
190 #define BCSR5_INT_USB			(0x02)
191 
192 /* USB module clk cfg */
193 #define SCCR_OFFS			(0xA08)
194 #define SCCR_USB_CLK_DISABLE		(0x00000000)	/* USB clk disable */
195 #define SCCR_USB_MPHCM_11		(0x00c00000)
196 #define SCCR_USB_MPHCM_01		(0x00400000)
197 #define SCCR_USB_MPHCM_10		(0x00800000)
198 #define SCCR_USB_DRCM_11		(0x00300000)
199 #define SCCR_USB_DRCM_01		(0x00100000)
200 #define SCCR_USB_DRCM_10		(0x00200000)
201 
202 #define SICRL_OFFS			(0x114)
203 #define SICRL_USB0			(0x40000000)
204 #define SICRL_USB1			(0x20000000)
205 
206 #define SICRH_OFFS			(0x118)
207 #define SICRH_USB_UTMI			(0x00020000)
208 
209 /* OTG interrupt enable bit masks */
210 #define  OTGSC_INTERRUPT_ENABLE_BITS_MASK  \
211 	(OTGSC_INTR_USB_ID_EN            | \
212 	OTGSC_INTR_1MS_TIMER_EN		 | \
213 	OTGSC_INTR_A_VBUS_VALID_EN       | \
214 	OTGSC_INTR_A_SESSION_VALID_EN    | \
215 	OTGSC_INTR_B_SESSION_VALID_EN    | \
216 	OTGSC_INTR_B_SESSION_END_EN      | \
217 	OTGSC_INTR_DATA_PULSING_EN)
218 
219 /* OTG interrupt status bit masks */
220 #define  OTGSC_INTERRUPT_STATUS_BITS_MASK  \
221 	(OTGSC_INTSTS_USB_ID          |    \
222 	OTGSC_INTR_1MS_TIMER_EN       |    \
223 	OTGSC_INTSTS_A_VBUS_VALID     |    \
224 	OTGSC_INTSTS_A_SESSION_VALID  |    \
225 	OTGSC_INTSTS_B_SESSION_VALID  |    \
226 	OTGSC_INTSTS_B_SESSION_END    |    \
227 	OTGSC_INTSTS_DATA_PULSING)
228 
229 /*
230  *  A-DEVICE timing  constants
231  */
232 
233 /* Wait for VBUS Rise  */
234 #define TA_WAIT_VRISE	(100)	/* a_wait_vrise 100 ms, section: 6.6.5.1 */
235 
236 /* Wait for B-Connect */
237 #define TA_WAIT_BCON	(10000)  /* a_wait_bcon > 1 sec, section: 6.6.5.2
238 				  * This is only used to get out of
239 				  * OTG_STATE_A_WAIT_BCON state if there was
240 				  * no connection for these many milliseconds
241 				  */
242 
243 /* A-Idle to B-Disconnect */
244 /* It is necessary for this timer to be more than 750 ms because of a bug in OPT
245  * test 5.4 in which B OPT disconnects after 750 ms instead of 75ms as stated
246  * in the test description
247  */
248 #define TA_AIDL_BDIS	(5000)	/* a_suspend minimum 200 ms, section: 6.6.5.3 */
249 
250 /* B-Idle to A-Disconnect */
251 #define TA_BIDL_ADIS	(12)	/* 3 to 200 ms */
252 
253 /* B-device timing constants */
254 
255 
256 /* Data-Line Pulse Time*/
257 #define TB_DATA_PLS	(10)	/* b_srp_init,continue 5~10ms, section:5.3.3 */
258 #define TB_DATA_PLS_MIN	(5)	/* minimum 5 ms */
259 #define TB_DATA_PLS_MAX	(10)	/* maximum 10 ms */
260 
261 /* SRP Initiate Time  */
262 #define TB_SRP_INIT	(100)	/* b_srp_init,maximum 100 ms, section:5.3.8 */
263 
264 /* SRP Fail Time  */
265 #define TB_SRP_FAIL	(7000)	/* b_srp_init,Fail time 5~30s, section:6.8.2.2*/
266 
267 /* SRP result wait time */
268 #define TB_SRP_WAIT	(60)
269 
270 /* VBus time */
271 #define TB_VBUS_PLS	(30)	/* time to keep vbus pulsing asserted */
272 
273 /* Discharge time */
274 /* This time should be less than 10ms. It varies from system to system. */
275 #define TB_VBUS_DSCHRG	(8)
276 
277 /* A-SE0 to B-Reset  */
278 #define TB_ASE0_BRST	(20)	/* b_wait_acon, mini 3.125 ms,section:6.8.2.4 */
279 
280 /* A bus suspend timer before we can switch to b_wait_aconn */
281 #define TB_A_SUSPEND	(7)
282 #define TB_BUS_RESUME	(12)
283 
284 /* SE0 Time Before SRP */
285 #define TB_SE0_SRP	(2)	/* b_idle,minimum 2 ms, section:5.3.2 */
286 
287 #define SET_OTG_STATE(phy, newstate)	((phy)->otg->state = newstate)
288 
289 struct usb_dr_mmap {
290 	/* Capability register */
291 	u8 res1[256];
292 	u16 caplength;		/* Capability Register Length */
293 	u16 hciversion;		/* Host Controller Interface Version */
294 	u32 hcsparams;		/* Host Controller Structual Parameters */
295 	u32 hccparams;		/* Host Controller Capability Parameters */
296 	u8 res2[20];
297 	u32 dciversion;		/* Device Controller Interface Version */
298 	u32 dccparams;		/* Device Controller Capability Parameters */
299 	u8 res3[24];
300 	/* Operation register */
301 	u32 usbcmd;		/* USB Command Register */
302 	u32 usbsts;		/* USB Status Register */
303 	u32 usbintr;		/* USB Interrupt Enable Register */
304 	u32 frindex;		/* Frame Index Register */
305 	u8 res4[4];
306 	u32 deviceaddr;		/* Device Address */
307 	u32 endpointlistaddr;	/* Endpoint List Address Register */
308 	u8 res5[4];
309 	u32 burstsize;		/* Master Interface Data Burst Size Register */
310 	u32 txttfilltuning;	/* Transmit FIFO Tuning Controls Register */
311 	u8 res6[8];
312 	u32 ulpiview;		/* ULPI register access */
313 	u8 res7[12];
314 	u32 configflag;		/* Configure Flag Register */
315 	u32 portsc;		/* Port 1 Status and Control Register */
316 	u8 res8[28];
317 	u32 otgsc;		/* On-The-Go Status and Control */
318 	u32 usbmode;		/* USB Mode Register */
319 	u32 endptsetupstat;	/* Endpoint Setup Status Register */
320 	u32 endpointprime;	/* Endpoint Initialization Register */
321 	u32 endptflush;		/* Endpoint Flush Register */
322 	u32 endptstatus;	/* Endpoint Status Register */
323 	u32 endptcomplete;	/* Endpoint Complete Register */
324 	u32 endptctrl[6];	/* Endpoint Control Registers */
325 	u8 res9[552];
326 	u32 snoop1;
327 	u32 snoop2;
328 	u32 age_cnt_thresh;	/* Age Count Threshold Register */
329 	u32 pri_ctrl;		/* Priority Control Register */
330 	u32 si_ctrl;		/* System Interface Control Register */
331 	u8 res10[236];
332 	u32 control;		/* General Purpose Control Register */
333 };
334 
335 struct fsl_otg_timer {
336 	unsigned long expires;	/* Number of count increase to timeout */
337 	unsigned long count;	/* Tick counter */
338 	void (*function)(unsigned long);	/* Timeout function */
339 	unsigned long data;	/* Data passed to function */
340 	struct list_head list;
341 };
342 
343 inline struct fsl_otg_timer *otg_timer_initializer
344 (void (*function)(unsigned long), unsigned long expires, unsigned long data)
345 {
346 	struct fsl_otg_timer *timer;
347 
348 	timer = kmalloc(sizeof(struct fsl_otg_timer), GFP_KERNEL);
349 	if (!timer)
350 		return NULL;
351 	timer->function = function;
352 	timer->expires = expires;
353 	timer->data = data;
354 	return timer;
355 }
356 
357 struct fsl_otg {
358 	struct usb_phy phy;
359 	struct otg_fsm fsm;
360 	struct usb_dr_mmap *dr_mem_map;
361 	struct delayed_work otg_event;
362 
363 	/* used for usb host */
364 	struct work_struct work_wq;
365 	u8	host_working;
366 
367 	int irq;
368 };
369 
370 struct fsl_otg_config {
371 	u8 otg_port;
372 };
373 
374 #define FSL_OTG_NAME		"fsl-usb2-otg"
375 
376 void fsl_otg_add_timer(struct otg_fsm *fsm, void *timer);
377 void fsl_otg_del_timer(struct otg_fsm *fsm, void *timer);
378 void fsl_otg_pulse_vbus(void);
379