2 * Renesas USB3.0 Peripheral driver (USB gadget)
4 * Copyright (C) 2015 Renesas Electronics Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
11 #include <linux/delay.h>
12 #include <linux/dma-mapping.h>
13 #include <linux/err.h>
14 #include <linux/extcon.h>
15 #include <linux/interrupt.h>
17 #include <linux/module.h>
18 #include <linux/of_device.h>
19 #include <linux/platform_device.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/sizes.h>
22 #include <linux/slab.h>
23 #include <linux/usb/ch9.h>
24 #include <linux/usb/gadget.h>
26 /* register definitions */
27 #define USB3_AXI_INT_STA 0x008
28 #define USB3_AXI_INT_ENA 0x00c
29 #define USB3_DMA_INT_STA 0x010
30 #define USB3_DMA_INT_ENA 0x014
31 #define USB3_DMA_CH0_CON(n) (0x030 + ((n) - 1) * 0x10) /* n = 1 to 4 */
32 #define USB3_DMA_CH0_PRD_ADR(n) (0x034 + ((n) - 1) * 0x10) /* n = 1 to 4 */
33 #define USB3_USB_COM_CON 0x200
34 #define USB3_USB20_CON 0x204
35 #define USB3_USB30_CON 0x208
36 #define USB3_USB_STA 0x210
37 #define USB3_DRD_CON 0x218
38 #define USB3_USB_INT_STA_1 0x220
39 #define USB3_USB_INT_STA_2 0x224
40 #define USB3_USB_INT_ENA_1 0x228
41 #define USB3_USB_INT_ENA_2 0x22c
42 #define USB3_STUP_DAT_0 0x230
43 #define USB3_STUP_DAT_1 0x234
44 #define USB3_USB_OTG_STA 0x268
45 #define USB3_USB_OTG_INT_STA 0x26c
46 #define USB3_USB_OTG_INT_ENA 0x270
47 #define USB3_P0_MOD 0x280
48 #define USB3_P0_CON 0x288
49 #define USB3_P0_STA 0x28c
50 #define USB3_P0_INT_STA 0x290
51 #define USB3_P0_INT_ENA 0x294
52 #define USB3_P0_LNG 0x2a0
53 #define USB3_P0_READ 0x2a4
54 #define USB3_P0_WRITE 0x2a8
55 #define USB3_PIPE_COM 0x2b0
56 #define USB3_PN_MOD 0x2c0
57 #define USB3_PN_RAMMAP 0x2c4
58 #define USB3_PN_CON 0x2c8
59 #define USB3_PN_STA 0x2cc
60 #define USB3_PN_INT_STA 0x2d0
61 #define USB3_PN_INT_ENA 0x2d4
62 #define USB3_PN_LNG 0x2e0
63 #define USB3_PN_READ 0x2e4
64 #define USB3_PN_WRITE 0x2e8
65 #define USB3_SSIFCMD 0x340
67 /* AXI_INT_ENA and AXI_INT_STA */
68 #define AXI_INT_DMAINT BIT(31)
69 #define AXI_INT_EPCINT BIT(30)
70 /* PRD's n = from 1 to 4 */
71 #define AXI_INT_PRDEN_CLR_STA_SHIFT(n) (16 + (n) - 1)
72 #define AXI_INT_PRDERR_STA_SHIFT(n) (0 + (n) - 1)
73 #define AXI_INT_PRDEN_CLR_STA(n) (1 << AXI_INT_PRDEN_CLR_STA_SHIFT(n))
74 #define AXI_INT_PRDERR_STA(n) (1 << AXI_INT_PRDERR_STA_SHIFT(n))
76 /* DMA_INT_ENA and DMA_INT_STA */
77 #define DMA_INT(n) BIT(n)
80 #define DMA_CON_PIPE_DIR BIT(15) /* 1: In Transfer */
81 #define DMA_CON_PIPE_NO_SHIFT 8
82 #define DMA_CON_PIPE_NO_MASK GENMASK(12, DMA_CON_PIPE_NO_SHIFT)
83 #define DMA_COM_PIPE_NO(n) (((n) << DMA_CON_PIPE_NO_SHIFT) & \
85 #define DMA_CON_PRD_EN BIT(0)
88 #define LCLKSEL_LSEL BIT(18)
91 #define USB_COM_CON_CONF BIT(24)
92 #define USB_COM_CON_PN_WDATAIF_NL BIT(23)
93 #define USB_COM_CON_PN_RDATAIF_NL BIT(22)
94 #define USB_COM_CON_PN_LSTTR_PP BIT(21)
95 #define USB_COM_CON_SPD_MODE BIT(17)
96 #define USB_COM_CON_EP0_EN BIT(16)
97 #define USB_COM_CON_DEV_ADDR_SHIFT 8
98 #define USB_COM_CON_DEV_ADDR_MASK GENMASK(14, USB_COM_CON_DEV_ADDR_SHIFT)
99 #define USB_COM_CON_DEV_ADDR(n) (((n) << USB_COM_CON_DEV_ADDR_SHIFT) & \
100 USB_COM_CON_DEV_ADDR_MASK)
101 #define USB_COM_CON_RX_DETECTION BIT(1)
102 #define USB_COM_CON_PIPE_CLR BIT(0)
105 #define USB20_CON_B2_PUE BIT(31)
106 #define USB20_CON_B2_SUSPEND BIT(24)
107 #define USB20_CON_B2_CONNECT BIT(17)
108 #define USB20_CON_B2_TSTMOD_SHIFT 8
109 #define USB20_CON_B2_TSTMOD_MASK GENMASK(10, USB20_CON_B2_TSTMOD_SHIFT)
110 #define USB20_CON_B2_TSTMOD(n) (((n) << USB20_CON_B2_TSTMOD_SHIFT) & \
111 USB20_CON_B2_TSTMOD_MASK)
112 #define USB20_CON_B2_TSTMOD_EN BIT(0)
115 #define USB30_CON_POW_SEL_SHIFT 24
116 #define USB30_CON_POW_SEL_MASK GENMASK(26, USB30_CON_POW_SEL_SHIFT)
117 #define USB30_CON_POW_SEL_IN_U3 BIT(26)
118 #define USB30_CON_POW_SEL_IN_DISCON 0
119 #define USB30_CON_POW_SEL_P2_TO_P0 BIT(25)
120 #define USB30_CON_POW_SEL_P0_TO_P3 BIT(24)
121 #define USB30_CON_POW_SEL_P0_TO_P2 0
122 #define USB30_CON_B3_PLLWAKE BIT(23)
123 #define USB30_CON_B3_CONNECT BIT(17)
124 #define USB30_CON_B3_HOTRST_CMP BIT(1)
127 #define USB_STA_SPEED_MASK (BIT(2) | BIT(1))
128 #define USB_STA_SPEED_HS BIT(2)
129 #define USB_STA_SPEED_FS BIT(1)
130 #define USB_STA_SPEED_SS 0
131 #define USB_STA_VBUS_STA BIT(0)
134 #define DRD_CON_PERI_CON BIT(24)
135 #define DRD_CON_VBOUT BIT(0)
137 /* USB_INT_ENA_1 and USB_INT_STA_1 */
138 #define USB_INT_1_B3_PLLWKUP BIT(31)
139 #define USB_INT_1_B3_LUPSUCS BIT(30)
140 #define USB_INT_1_B3_DISABLE BIT(27)
141 #define USB_INT_1_B3_WRMRST BIT(21)
142 #define USB_INT_1_B3_HOTRST BIT(20)
143 #define USB_INT_1_B2_USBRST BIT(12)
144 #define USB_INT_1_B2_L1SPND BIT(11)
145 #define USB_INT_1_B2_SPND BIT(9)
146 #define USB_INT_1_B2_RSUM BIT(8)
147 #define USB_INT_1_SPEED BIT(1)
148 #define USB_INT_1_VBUS_CNG BIT(0)
150 /* USB_INT_ENA_2 and USB_INT_STA_2 */
151 #define USB_INT_2_PIPE(n) BIT(n)
153 /* USB_OTG_STA, USB_OTG_INT_STA and USB_OTG_INT_ENA */
154 #define USB_OTG_IDMON BIT(4)
157 #define P0_MOD_DIR BIT(6)
159 /* P0_CON and PN_CON */
160 #define PX_CON_BYTE_EN_MASK (BIT(10) | BIT(9))
161 #define PX_CON_BYTE_EN_SHIFT 9
162 #define PX_CON_BYTE_EN_BYTES(n) (((n) << PX_CON_BYTE_EN_SHIFT) & \
164 #define PX_CON_SEND BIT(8)
167 #define P0_CON_ST_RES_MASK (BIT(27) | BIT(26))
168 #define P0_CON_ST_RES_FORCE_STALL BIT(27)
169 #define P0_CON_ST_RES_NORMAL BIT(26)
170 #define P0_CON_ST_RES_FORCE_NRDY 0
171 #define P0_CON_OT_RES_MASK (BIT(25) | BIT(24))
172 #define P0_CON_OT_RES_FORCE_STALL BIT(25)
173 #define P0_CON_OT_RES_NORMAL BIT(24)
174 #define P0_CON_OT_RES_FORCE_NRDY 0
175 #define P0_CON_IN_RES_MASK (BIT(17) | BIT(16))
176 #define P0_CON_IN_RES_FORCE_STALL BIT(17)
177 #define P0_CON_IN_RES_NORMAL BIT(16)
178 #define P0_CON_IN_RES_FORCE_NRDY 0
179 #define P0_CON_RES_WEN BIT(7)
180 #define P0_CON_BCLR BIT(1)
182 /* P0_STA and PN_STA */
183 #define PX_STA_BUFSTS BIT(0)
185 /* P0_INT_ENA and P0_INT_STA */
186 #define P0_INT_STSED BIT(18)
187 #define P0_INT_STSST BIT(17)
188 #define P0_INT_SETUP BIT(16)
189 #define P0_INT_RCVNL BIT(8)
190 #define P0_INT_ERDY BIT(7)
191 #define P0_INT_FLOW BIT(6)
192 #define P0_INT_STALL BIT(2)
193 #define P0_INT_NRDY BIT(1)
194 #define P0_INT_BFRDY BIT(0)
195 #define P0_INT_ALL_BITS (P0_INT_STSED | P0_INT_SETUP | P0_INT_BFRDY)
198 #define PN_MOD_DIR BIT(6)
199 #define PN_MOD_TYPE_SHIFT 4
200 #define PN_MOD_TYPE_MASK GENMASK(5, PN_MOD_TYPE_SHIFT)
201 #define PN_MOD_TYPE(n) (((n) << PN_MOD_TYPE_SHIFT) & \
203 #define PN_MOD_EPNUM_MASK GENMASK(3, 0)
204 #define PN_MOD_EPNUM(n) ((n) & PN_MOD_EPNUM_MASK)
207 #define PN_RAMMAP_RAMAREA_SHIFT 29
208 #define PN_RAMMAP_RAMAREA_MASK GENMASK(31, PN_RAMMAP_RAMAREA_SHIFT)
209 #define PN_RAMMAP_RAMAREA_16KB BIT(31)
210 #define PN_RAMMAP_RAMAREA_8KB (BIT(30) | BIT(29))
211 #define PN_RAMMAP_RAMAREA_4KB BIT(30)
212 #define PN_RAMMAP_RAMAREA_2KB BIT(29)
213 #define PN_RAMMAP_RAMAREA_1KB 0
214 #define PN_RAMMAP_MPKT_SHIFT 16
215 #define PN_RAMMAP_MPKT_MASK GENMASK(26, PN_RAMMAP_MPKT_SHIFT)
216 #define PN_RAMMAP_MPKT(n) (((n) << PN_RAMMAP_MPKT_SHIFT) & \
218 #define PN_RAMMAP_RAMIF_SHIFT 14
219 #define PN_RAMMAP_RAMIF_MASK GENMASK(15, PN_RAMMAP_RAMIF_SHIFT)
220 #define PN_RAMMAP_RAMIF(n) (((n) << PN_RAMMAP_RAMIF_SHIFT) & \
221 PN_RAMMAP_RAMIF_MASK)
222 #define PN_RAMMAP_BASEAD_MASK GENMASK(13, 0)
223 #define PN_RAMMAP_BASEAD(offs) (((offs) >> 3) & PN_RAMMAP_BASEAD_MASK)
224 #define PN_RAMMAP_DATA(area, ramif, basead) ((PN_RAMMAP_##area) | \
225 (PN_RAMMAP_RAMIF(ramif)) | \
226 (PN_RAMMAP_BASEAD(basead)))
229 #define PN_CON_EN BIT(31)
230 #define PN_CON_DATAIF_EN BIT(30)
231 #define PN_CON_RES_MASK (BIT(17) | BIT(16))
232 #define PN_CON_RES_FORCE_STALL BIT(17)
233 #define PN_CON_RES_NORMAL BIT(16)
234 #define PN_CON_RES_FORCE_NRDY 0
235 #define PN_CON_LAST BIT(11)
236 #define PN_CON_RES_WEN BIT(7)
237 #define PN_CON_CLR BIT(0)
239 /* PN_INT_STA and PN_INT_ENA */
240 #define PN_INT_LSTTR BIT(4)
241 #define PN_INT_BFRDY BIT(0)
244 #define SSIFCMD_URES_U2 BIT(9)
245 #define SSIFCMD_URES_U1 BIT(8)
246 #define SSIFCMD_UDIR_U2 BIT(7)
247 #define SSIFCMD_UDIR_U1 BIT(6)
248 #define SSIFCMD_UREQ_U2 BIT(5)
249 #define SSIFCMD_UREQ_U1 BIT(4)
251 #define USB3_EP0_SS_MAX_PACKET_SIZE 512
252 #define USB3_EP0_HSFS_MAX_PACKET_SIZE 64
253 #define USB3_EP0_BUF_SIZE 8
254 #define USB3_MAX_NUM_PIPES 30
255 #define USB3_WAIT_US 3
256 #define USB3_DMA_NUM_SETTING_AREA 4
258 * To avoid double-meaning of "0" (xferred 65536 bytes or received zlp if
259 * buffer size is 65536), this driver uses the maximum size per a entry is
262 #define USB3_DMA_MAX_XFER_SIZE 32768
263 #define USB3_DMA_PRD_SIZE 4096
267 /* Physical Region Descriptor Table */
268 struct renesas_usb3_prd
{
270 #define USB3_PRD1_E BIT(30) /* the end of chain */
271 #define USB3_PRD1_U BIT(29) /* completion of transfer */
272 #define USB3_PRD1_D BIT(28) /* Error occurred */
273 #define USB3_PRD1_INT BIT(27) /* Interrupt occurred */
274 #define USB3_PRD1_LST BIT(26) /* Last Packet */
275 #define USB3_PRD1_B_INC BIT(24)
276 #define USB3_PRD1_MPS_8 0
277 #define USB3_PRD1_MPS_16 BIT(21)
278 #define USB3_PRD1_MPS_32 BIT(22)
279 #define USB3_PRD1_MPS_64 (BIT(22) | BIT(21))
280 #define USB3_PRD1_MPS_512 BIT(23)
281 #define USB3_PRD1_MPS_1024 (BIT(23) | BIT(21))
282 #define USB3_PRD1_MPS_RESERVED (BIT(23) | BIT(22) | BIT(21))
283 #define USB3_PRD1_SIZE_MASK GENMASK(15, 0)
287 #define USB3_DMA_NUM_PRD_ENTRIES (USB3_DMA_PRD_SIZE / \
288 sizeof(struct renesas_usb3_prd))
289 #define USB3_DMA_MAX_XFER_SIZE_ALL_PRDS (USB3_DMA_PRD_SIZE / \
290 sizeof(struct renesas_usb3_prd) * \
291 USB3_DMA_MAX_XFER_SIZE)
293 struct renesas_usb3_dma
{
294 struct renesas_usb3_prd
*prd
;
296 int num
; /* Setting area number (from 1 to 4) */
300 struct renesas_usb3_request
{
301 struct usb_request req
;
302 struct list_head queue
;
305 #define USB3_EP_NAME_SIZE 8
306 struct renesas_usb3_ep
{
308 struct renesas_usb3
*usb3
;
309 struct renesas_usb3_dma
*dma
;
311 char ep_name
[USB3_EP_NAME_SIZE
];
312 struct list_head queue
;
320 struct renesas_usb3_priv
{
321 int ramsize_per_ramif
; /* unit = bytes */
323 int ramsize_per_pipe
; /* unit = bytes */
324 bool workaround_for_vbus
; /* if true, don't check vbus signal */
327 struct renesas_usb3
{
330 struct usb_gadget gadget
;
331 struct usb_gadget_driver
*driver
;
332 struct extcon_dev
*extcon
;
333 struct work_struct extcon_work
;
335 struct renesas_usb3_ep
*usb3_ep
;
338 struct renesas_usb3_dma dma
[USB3_DMA_NUM_SETTING_AREA
];
343 struct usb_request
*ep0_req
;
345 u8 ep0_buf
[USB3_EP0_BUF_SIZE
];
347 bool workaround_for_vbus
;
348 bool extcon_host
; /* check id and set EXTCON_USB_HOST */
349 bool extcon_usb
; /* check vbus and set EXTCON_USB */
352 #define gadget_to_renesas_usb3(_gadget) \
353 container_of(_gadget, struct renesas_usb3, gadget)
354 #define renesas_usb3_to_gadget(renesas_usb3) (&renesas_usb3->gadget)
355 #define usb3_to_dev(_usb3) (_usb3->gadget.dev.parent)
357 #define usb_ep_to_usb3_ep(_ep) container_of(_ep, struct renesas_usb3_ep, ep)
358 #define usb3_ep_to_usb3(_usb3_ep) (_usb3_ep->usb3)
359 #define usb_req_to_usb3_req(_req) container_of(_req, \
360 struct renesas_usb3_request, req)
362 #define usb3_get_ep(usb3, n) ((usb3)->usb3_ep + (n))
363 #define usb3_for_each_ep(usb3_ep, usb3, i) \
364 for ((i) = 0, usb3_ep = usb3_get_ep(usb3, (i)); \
365 (i) < (usb3)->num_usb3_eps; \
366 (i)++, usb3_ep = usb3_get_ep(usb3, (i)))
368 #define usb3_get_dma(usb3, i) (&(usb3)->dma[i])
369 #define usb3_for_each_dma(usb3, dma, i) \
370 for ((i) = 0, dma = usb3_get_dma((usb3), (i)); \
371 (i) < USB3_DMA_NUM_SETTING_AREA; \
372 (i)++, dma = usb3_get_dma((usb3), (i)))
374 static const char udc_name
[] = "renesas_usb3";
376 static bool use_dma
= 1;
377 module_param(use_dma
, bool, 0644);
378 MODULE_PARM_DESC(use_dma
, "use dedicated DMAC");
380 static void usb3_write(struct renesas_usb3
*usb3
, u32 data
, u32 offs
)
382 iowrite32(data
, usb3
->reg
+ offs
);
385 static u32
usb3_read(struct renesas_usb3
*usb3
, u32 offs
)
387 return ioread32(usb3
->reg
+ offs
);
390 static void usb3_set_bit(struct renesas_usb3
*usb3
, u32 bits
, u32 offs
)
392 u32 val
= usb3_read(usb3
, offs
);
395 usb3_write(usb3
, val
, offs
);
398 static void usb3_clear_bit(struct renesas_usb3
*usb3
, u32 bits
, u32 offs
)
400 u32 val
= usb3_read(usb3
, offs
);
403 usb3_write(usb3
, val
, offs
);
406 static int usb3_wait(struct renesas_usb3
*usb3
, u32 reg
, u32 mask
,
411 for (i
= 0; i
< USB3_WAIT_US
; i
++) {
412 if ((usb3_read(usb3
, reg
) & mask
) == expected
)
417 dev_dbg(usb3_to_dev(usb3
), "%s: timed out (%8x, %08x, %08x)\n",
418 __func__
, reg
, mask
, expected
);
423 static void renesas_usb3_extcon_work(struct work_struct
*work
)
425 struct renesas_usb3
*usb3
= container_of(work
, struct renesas_usb3
,
428 extcon_set_state_sync(usb3
->extcon
, EXTCON_USB_HOST
, usb3
->extcon_host
);
429 extcon_set_state_sync(usb3
->extcon
, EXTCON_USB
, usb3
->extcon_usb
);
432 static void usb3_enable_irq_1(struct renesas_usb3
*usb3
, u32 bits
)
434 usb3_set_bit(usb3
, bits
, USB3_USB_INT_ENA_1
);
437 static void usb3_disable_irq_1(struct renesas_usb3
*usb3
, u32 bits
)
439 usb3_clear_bit(usb3
, bits
, USB3_USB_INT_ENA_1
);
442 static void usb3_enable_pipe_irq(struct renesas_usb3
*usb3
, int num
)
444 usb3_set_bit(usb3
, USB_INT_2_PIPE(num
), USB3_USB_INT_ENA_2
);
447 static void usb3_disable_pipe_irq(struct renesas_usb3
*usb3
, int num
)
449 usb3_clear_bit(usb3
, USB_INT_2_PIPE(num
), USB3_USB_INT_ENA_2
);
452 static bool usb3_is_host(struct renesas_usb3
*usb3
)
454 return !(usb3_read(usb3
, USB3_DRD_CON
) & DRD_CON_PERI_CON
);
457 static void usb3_init_axi_bridge(struct renesas_usb3
*usb3
)
460 usb3_write(usb3
, ~0, USB3_DMA_INT_STA
);
461 usb3_write(usb3
, 0, USB3_DMA_INT_ENA
);
462 usb3_set_bit(usb3
, AXI_INT_DMAINT
| AXI_INT_EPCINT
, USB3_AXI_INT_ENA
);
465 static void usb3_init_epc_registers(struct renesas_usb3
*usb3
)
467 usb3_write(usb3
, ~0, USB3_USB_INT_STA_1
);
468 usb3_enable_irq_1(usb3
, USB_INT_1_VBUS_CNG
);
471 static bool usb3_wakeup_usb2_phy(struct renesas_usb3
*usb3
)
473 if (!(usb3_read(usb3
, USB3_USB20_CON
) & USB20_CON_B2_SUSPEND
))
474 return true; /* already waked it up */
476 usb3_clear_bit(usb3
, USB20_CON_B2_SUSPEND
, USB3_USB20_CON
);
477 usb3_enable_irq_1(usb3
, USB_INT_1_B2_RSUM
);
482 static void usb3_usb2_pullup(struct renesas_usb3
*usb3
, int pullup
)
484 u32 bits
= USB20_CON_B2_PUE
| USB20_CON_B2_CONNECT
;
486 if (usb3
->softconnect
&& pullup
)
487 usb3_set_bit(usb3
, bits
, USB3_USB20_CON
);
489 usb3_clear_bit(usb3
, bits
, USB3_USB20_CON
);
492 static void usb3_set_test_mode(struct renesas_usb3
*usb3
)
494 u32 val
= usb3_read(usb3
, USB3_USB20_CON
);
496 val
&= ~USB20_CON_B2_TSTMOD_MASK
;
497 val
|= USB20_CON_B2_TSTMOD(usb3
->test_mode
);
498 usb3_write(usb3
, val
| USB20_CON_B2_TSTMOD_EN
, USB3_USB20_CON
);
499 if (!usb3
->test_mode
)
500 usb3_clear_bit(usb3
, USB20_CON_B2_TSTMOD_EN
, USB3_USB20_CON
);
503 static void usb3_start_usb2_connection(struct renesas_usb3
*usb3
)
505 usb3
->disabled_count
++;
506 usb3_set_bit(usb3
, USB_COM_CON_EP0_EN
, USB3_USB_COM_CON
);
507 usb3_set_bit(usb3
, USB_COM_CON_SPD_MODE
, USB3_USB_COM_CON
);
508 usb3_usb2_pullup(usb3
, 1);
511 static int usb3_is_usb3_phy_in_u3(struct renesas_usb3
*usb3
)
513 return usb3_read(usb3
, USB3_USB30_CON
) & USB30_CON_POW_SEL_IN_U3
;
516 static bool usb3_wakeup_usb3_phy(struct renesas_usb3
*usb3
)
518 if (!usb3_is_usb3_phy_in_u3(usb3
))
519 return true; /* already waked it up */
521 usb3_set_bit(usb3
, USB30_CON_B3_PLLWAKE
, USB3_USB30_CON
);
522 usb3_enable_irq_1(usb3
, USB_INT_1_B3_PLLWKUP
);
527 static u16
usb3_feature_get_un_enabled(struct renesas_usb3
*usb3
)
529 u32 mask_u2
= SSIFCMD_UDIR_U2
| SSIFCMD_UREQ_U2
;
530 u32 mask_u1
= SSIFCMD_UDIR_U1
| SSIFCMD_UREQ_U1
;
531 u32 val
= usb3_read(usb3
, USB3_SSIFCMD
);
534 /* Enables {U2,U1} if the bits of UDIR and UREQ are set to 0 */
535 if (!(val
& mask_u2
))
536 ret
|= 1 << USB_DEV_STAT_U2_ENABLED
;
537 if (!(val
& mask_u1
))
538 ret
|= 1 << USB_DEV_STAT_U1_ENABLED
;
543 static void usb3_feature_u2_enable(struct renesas_usb3
*usb3
, bool enable
)
545 u32 bits
= SSIFCMD_UDIR_U2
| SSIFCMD_UREQ_U2
;
547 /* Enables U2 if the bits of UDIR and UREQ are set to 0 */
549 usb3_clear_bit(usb3
, bits
, USB3_SSIFCMD
);
551 usb3_set_bit(usb3
, bits
, USB3_SSIFCMD
);
554 static void usb3_feature_u1_enable(struct renesas_usb3
*usb3
, bool enable
)
556 u32 bits
= SSIFCMD_UDIR_U1
| SSIFCMD_UREQ_U1
;
558 /* Enables U1 if the bits of UDIR and UREQ are set to 0 */
560 usb3_clear_bit(usb3
, bits
, USB3_SSIFCMD
);
562 usb3_set_bit(usb3
, bits
, USB3_SSIFCMD
);
565 static void usb3_start_operation_for_usb3(struct renesas_usb3
*usb3
)
567 usb3_set_bit(usb3
, USB_COM_CON_EP0_EN
, USB3_USB_COM_CON
);
568 usb3_clear_bit(usb3
, USB_COM_CON_SPD_MODE
, USB3_USB_COM_CON
);
569 usb3_set_bit(usb3
, USB30_CON_B3_CONNECT
, USB3_USB30_CON
);
572 static void usb3_start_usb3_connection(struct renesas_usb3
*usb3
)
574 usb3_start_operation_for_usb3(usb3
);
575 usb3_set_bit(usb3
, USB_COM_CON_RX_DETECTION
, USB3_USB_COM_CON
);
577 usb3_enable_irq_1(usb3
, USB_INT_1_B3_LUPSUCS
| USB_INT_1_B3_DISABLE
|
581 static void usb3_stop_usb3_connection(struct renesas_usb3
*usb3
)
583 usb3_clear_bit(usb3
, USB30_CON_B3_CONNECT
, USB3_USB30_CON
);
586 static void usb3_transition_to_default_state(struct renesas_usb3
*usb3
,
589 usb3_set_bit(usb3
, USB_INT_2_PIPE(0), USB3_USB_INT_ENA_2
);
590 usb3_write(usb3
, P0_INT_ALL_BITS
, USB3_P0_INT_STA
);
591 usb3_set_bit(usb3
, P0_INT_ALL_BITS
, USB3_P0_INT_ENA
);
594 usb3_enable_irq_1(usb3
, USB_INT_1_B3_WRMRST
|
595 USB_INT_1_B3_HOTRST
);
597 usb3_enable_irq_1(usb3
, USB_INT_1_B2_SPND
|
598 USB_INT_1_B2_L1SPND
| USB_INT_1_B2_USBRST
);
601 static void usb3_connect(struct renesas_usb3
*usb3
)
603 if (usb3_wakeup_usb3_phy(usb3
))
604 usb3_start_usb3_connection(usb3
);
607 static void usb3_reset_epc(struct renesas_usb3
*usb3
)
609 usb3_clear_bit(usb3
, USB_COM_CON_CONF
, USB3_USB_COM_CON
);
610 usb3_clear_bit(usb3
, USB_COM_CON_EP0_EN
, USB3_USB_COM_CON
);
611 usb3_set_bit(usb3
, USB_COM_CON_PIPE_CLR
, USB3_USB_COM_CON
);
613 usb3_set_test_mode(usb3
);
616 static void usb3_disconnect(struct renesas_usb3
*usb3
)
618 usb3
->disabled_count
= 0;
619 usb3_usb2_pullup(usb3
, 0);
620 usb3_clear_bit(usb3
, USB30_CON_B3_CONNECT
, USB3_USB30_CON
);
621 usb3_reset_epc(usb3
);
624 usb3
->driver
->disconnect(&usb3
->gadget
);
627 static void usb3_check_vbus(struct renesas_usb3
*usb3
)
629 if (usb3
->workaround_for_vbus
) {
632 usb3
->extcon_usb
= !!(usb3_read(usb3
, USB3_USB_STA
) &
634 if (usb3
->extcon_usb
)
637 usb3_disconnect(usb3
);
639 schedule_work(&usb3
->extcon_work
);
643 static void usb3_set_mode(struct renesas_usb3
*usb3
, bool host
)
646 usb3_clear_bit(usb3
, DRD_CON_PERI_CON
, USB3_DRD_CON
);
648 usb3_set_bit(usb3
, DRD_CON_PERI_CON
, USB3_DRD_CON
);
651 static void usb3_vbus_out(struct renesas_usb3
*usb3
, bool enable
)
654 usb3_set_bit(usb3
, DRD_CON_VBOUT
, USB3_DRD_CON
);
656 usb3_clear_bit(usb3
, DRD_CON_VBOUT
, USB3_DRD_CON
);
659 static void usb3_mode_config(struct renesas_usb3
*usb3
, bool host
, bool a_dev
)
663 spin_lock_irqsave(&usb3
->lock
, flags
);
664 usb3_set_mode(usb3
, host
);
665 usb3_vbus_out(usb3
, a_dev
);
666 if (!host
&& a_dev
) /* for A-Peripheral */
668 spin_unlock_irqrestore(&usb3
->lock
, flags
);
671 static bool usb3_is_a_device(struct renesas_usb3
*usb3
)
673 return !(usb3_read(usb3
, USB3_USB_OTG_STA
) & USB_OTG_IDMON
);
676 static void usb3_check_id(struct renesas_usb3
*usb3
)
678 usb3
->extcon_host
= usb3_is_a_device(usb3
);
680 if (usb3
->extcon_host
)
681 usb3_mode_config(usb3
, true, true);
683 usb3_mode_config(usb3
, false, false);
685 schedule_work(&usb3
->extcon_work
);
688 static void renesas_usb3_init_controller(struct renesas_usb3
*usb3
)
690 usb3_init_axi_bridge(usb3
);
691 usb3_init_epc_registers(usb3
);
692 usb3_set_bit(usb3
, USB_COM_CON_PN_WDATAIF_NL
|
693 USB_COM_CON_PN_RDATAIF_NL
| USB_COM_CON_PN_LSTTR_PP
,
695 usb3_write(usb3
, USB_OTG_IDMON
, USB3_USB_OTG_INT_STA
);
696 usb3_write(usb3
, USB_OTG_IDMON
, USB3_USB_OTG_INT_ENA
);
699 usb3_check_vbus(usb3
);
702 static void renesas_usb3_stop_controller(struct renesas_usb3
*usb3
)
704 usb3_disconnect(usb3
);
705 usb3_write(usb3
, 0, USB3_P0_INT_ENA
);
706 usb3_write(usb3
, 0, USB3_USB_OTG_INT_ENA
);
707 usb3_write(usb3
, 0, USB3_USB_INT_ENA_1
);
708 usb3_write(usb3
, 0, USB3_USB_INT_ENA_2
);
709 usb3_write(usb3
, 0, USB3_AXI_INT_ENA
);
712 static void usb3_irq_epc_int_1_pll_wakeup(struct renesas_usb3
*usb3
)
714 usb3_disable_irq_1(usb3
, USB_INT_1_B3_PLLWKUP
);
715 usb3_clear_bit(usb3
, USB30_CON_B3_PLLWAKE
, USB3_USB30_CON
);
716 usb3_start_usb3_connection(usb3
);
719 static void usb3_irq_epc_int_1_linkup_success(struct renesas_usb3
*usb3
)
721 usb3_transition_to_default_state(usb3
, true);
724 static void usb3_irq_epc_int_1_resume(struct renesas_usb3
*usb3
)
726 usb3_disable_irq_1(usb3
, USB_INT_1_B2_RSUM
);
727 usb3_start_usb2_connection(usb3
);
728 usb3_transition_to_default_state(usb3
, false);
731 static void usb3_irq_epc_int_1_disable(struct renesas_usb3
*usb3
)
733 usb3_stop_usb3_connection(usb3
);
734 if (usb3_wakeup_usb2_phy(usb3
))
735 usb3_irq_epc_int_1_resume(usb3
);
738 static void usb3_irq_epc_int_1_bus_reset(struct renesas_usb3
*usb3
)
740 usb3_reset_epc(usb3
);
741 if (usb3
->disabled_count
< 3)
742 usb3_start_usb3_connection(usb3
);
744 usb3_start_usb2_connection(usb3
);
747 static void usb3_irq_epc_int_1_vbus_change(struct renesas_usb3
*usb3
)
749 usb3_check_vbus(usb3
);
752 static void usb3_irq_epc_int_1_hot_reset(struct renesas_usb3
*usb3
)
754 usb3_reset_epc(usb3
);
755 usb3_set_bit(usb3
, USB_COM_CON_EP0_EN
, USB3_USB_COM_CON
);
757 /* This bit shall be set within 12ms from the start of HotReset */
758 usb3_set_bit(usb3
, USB30_CON_B3_HOTRST_CMP
, USB3_USB30_CON
);
761 static void usb3_irq_epc_int_1_warm_reset(struct renesas_usb3
*usb3
)
763 usb3_reset_epc(usb3
);
764 usb3_set_bit(usb3
, USB_COM_CON_EP0_EN
, USB3_USB_COM_CON
);
766 usb3_start_operation_for_usb3(usb3
);
767 usb3_enable_irq_1(usb3
, USB_INT_1_SPEED
);
770 static void usb3_irq_epc_int_1_speed(struct renesas_usb3
*usb3
)
772 u32 speed
= usb3_read(usb3
, USB3_USB_STA
) & USB_STA_SPEED_MASK
;
775 case USB_STA_SPEED_SS
:
776 usb3
->gadget
.speed
= USB_SPEED_SUPER
;
778 case USB_STA_SPEED_HS
:
779 usb3
->gadget
.speed
= USB_SPEED_HIGH
;
781 case USB_STA_SPEED_FS
:
782 usb3
->gadget
.speed
= USB_SPEED_FULL
;
785 usb3
->gadget
.speed
= USB_SPEED_UNKNOWN
;
790 static void usb3_irq_epc_int_1(struct renesas_usb3
*usb3
, u32 int_sta_1
)
792 if (int_sta_1
& USB_INT_1_B3_PLLWKUP
)
793 usb3_irq_epc_int_1_pll_wakeup(usb3
);
795 if (int_sta_1
& USB_INT_1_B3_LUPSUCS
)
796 usb3_irq_epc_int_1_linkup_success(usb3
);
798 if (int_sta_1
& USB_INT_1_B3_HOTRST
)
799 usb3_irq_epc_int_1_hot_reset(usb3
);
801 if (int_sta_1
& USB_INT_1_B3_WRMRST
)
802 usb3_irq_epc_int_1_warm_reset(usb3
);
804 if (int_sta_1
& USB_INT_1_B3_DISABLE
)
805 usb3_irq_epc_int_1_disable(usb3
);
807 if (int_sta_1
& USB_INT_1_B2_USBRST
)
808 usb3_irq_epc_int_1_bus_reset(usb3
);
810 if (int_sta_1
& USB_INT_1_B2_RSUM
)
811 usb3_irq_epc_int_1_resume(usb3
);
813 if (int_sta_1
& USB_INT_1_SPEED
)
814 usb3_irq_epc_int_1_speed(usb3
);
816 if (int_sta_1
& USB_INT_1_VBUS_CNG
)
817 usb3_irq_epc_int_1_vbus_change(usb3
);
820 static struct renesas_usb3_request
*__usb3_get_request(struct renesas_usb3_ep
823 return list_first_entry_or_null(&usb3_ep
->queue
,
824 struct renesas_usb3_request
, queue
);
827 static struct renesas_usb3_request
*usb3_get_request(struct renesas_usb3_ep
830 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
831 struct renesas_usb3_request
*usb3_req
;
834 spin_lock_irqsave(&usb3
->lock
, flags
);
835 usb3_req
= __usb3_get_request(usb3_ep
);
836 spin_unlock_irqrestore(&usb3
->lock
, flags
);
841 static void __usb3_request_done(struct renesas_usb3_ep
*usb3_ep
,
842 struct renesas_usb3_request
*usb3_req
,
845 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
847 dev_dbg(usb3_to_dev(usb3
), "giveback: ep%2d, %u, %u, %d\n",
848 usb3_ep
->num
, usb3_req
->req
.length
, usb3_req
->req
.actual
,
850 usb3_req
->req
.status
= status
;
851 usb3_ep
->started
= false;
852 list_del_init(&usb3_req
->queue
);
853 spin_unlock(&usb3
->lock
);
854 usb_gadget_giveback_request(&usb3_ep
->ep
, &usb3_req
->req
);
855 spin_lock(&usb3
->lock
);
858 static void usb3_request_done(struct renesas_usb3_ep
*usb3_ep
,
859 struct renesas_usb3_request
*usb3_req
, int status
)
861 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
864 spin_lock_irqsave(&usb3
->lock
, flags
);
865 __usb3_request_done(usb3_ep
, usb3_req
, status
);
866 spin_unlock_irqrestore(&usb3
->lock
, flags
);
869 static void usb3_irq_epc_pipe0_status_end(struct renesas_usb3
*usb3
)
871 struct renesas_usb3_ep
*usb3_ep
= usb3_get_ep(usb3
, 0);
872 struct renesas_usb3_request
*usb3_req
= usb3_get_request(usb3_ep
);
875 usb3_request_done(usb3_ep
, usb3_req
, 0);
877 usb3_set_test_mode(usb3
);
880 static void usb3_get_setup_data(struct renesas_usb3
*usb3
,
881 struct usb_ctrlrequest
*ctrl
)
883 struct renesas_usb3_ep
*usb3_ep
= usb3_get_ep(usb3
, 0);
884 u32
*data
= (u32
*)ctrl
;
886 *data
++ = usb3_read(usb3
, USB3_STUP_DAT_0
);
887 *data
= usb3_read(usb3
, USB3_STUP_DAT_1
);
889 /* update this driver's flag */
890 usb3_ep
->dir_in
= !!(ctrl
->bRequestType
& USB_DIR_IN
);
893 static void usb3_set_p0_con_update_res(struct renesas_usb3
*usb3
, u32 res
)
895 u32 val
= usb3_read(usb3
, USB3_P0_CON
);
897 val
&= ~(P0_CON_ST_RES_MASK
| P0_CON_OT_RES_MASK
| P0_CON_IN_RES_MASK
);
898 val
|= res
| P0_CON_RES_WEN
;
899 usb3_write(usb3
, val
, USB3_P0_CON
);
902 static void usb3_set_p0_con_for_ctrl_read_data(struct renesas_usb3
*usb3
)
904 usb3_set_p0_con_update_res(usb3
, P0_CON_ST_RES_FORCE_NRDY
|
905 P0_CON_OT_RES_FORCE_STALL
|
906 P0_CON_IN_RES_NORMAL
);
909 static void usb3_set_p0_con_for_ctrl_read_status(struct renesas_usb3
*usb3
)
911 usb3_set_p0_con_update_res(usb3
, P0_CON_ST_RES_NORMAL
|
912 P0_CON_OT_RES_FORCE_STALL
|
913 P0_CON_IN_RES_NORMAL
);
916 static void usb3_set_p0_con_for_ctrl_write_data(struct renesas_usb3
*usb3
)
918 usb3_set_p0_con_update_res(usb3
, P0_CON_ST_RES_FORCE_NRDY
|
919 P0_CON_OT_RES_NORMAL
|
920 P0_CON_IN_RES_FORCE_STALL
);
923 static void usb3_set_p0_con_for_ctrl_write_status(struct renesas_usb3
*usb3
)
925 usb3_set_p0_con_update_res(usb3
, P0_CON_ST_RES_NORMAL
|
926 P0_CON_OT_RES_NORMAL
|
927 P0_CON_IN_RES_FORCE_STALL
);
930 static void usb3_set_p0_con_for_no_data(struct renesas_usb3
*usb3
)
932 usb3_set_p0_con_update_res(usb3
, P0_CON_ST_RES_NORMAL
|
933 P0_CON_OT_RES_FORCE_STALL
|
934 P0_CON_IN_RES_FORCE_STALL
);
937 static void usb3_set_p0_con_stall(struct renesas_usb3
*usb3
)
939 usb3_set_p0_con_update_res(usb3
, P0_CON_ST_RES_FORCE_STALL
|
940 P0_CON_OT_RES_FORCE_STALL
|
941 P0_CON_IN_RES_FORCE_STALL
);
944 static void usb3_set_p0_con_stop(struct renesas_usb3
*usb3
)
946 usb3_set_p0_con_update_res(usb3
, P0_CON_ST_RES_FORCE_NRDY
|
947 P0_CON_OT_RES_FORCE_NRDY
|
948 P0_CON_IN_RES_FORCE_NRDY
);
951 static int usb3_pn_change(struct renesas_usb3
*usb3
, int num
)
953 if (num
== 0 || num
> usb3
->num_usb3_eps
)
956 usb3_write(usb3
, num
, USB3_PIPE_COM
);
961 static void usb3_set_pn_con_update_res(struct renesas_usb3
*usb3
, u32 res
)
963 u32 val
= usb3_read(usb3
, USB3_PN_CON
);
965 val
&= ~PN_CON_RES_MASK
;
966 val
|= res
& PN_CON_RES_MASK
;
967 val
|= PN_CON_RES_WEN
;
968 usb3_write(usb3
, val
, USB3_PN_CON
);
971 static void usb3_pn_start(struct renesas_usb3
*usb3
)
973 usb3_set_pn_con_update_res(usb3
, PN_CON_RES_NORMAL
);
976 static void usb3_pn_stop(struct renesas_usb3
*usb3
)
978 usb3_set_pn_con_update_res(usb3
, PN_CON_RES_FORCE_NRDY
);
981 static void usb3_pn_stall(struct renesas_usb3
*usb3
)
983 usb3_set_pn_con_update_res(usb3
, PN_CON_RES_FORCE_STALL
);
986 static int usb3_pn_con_clear(struct renesas_usb3
*usb3
)
988 usb3_set_bit(usb3
, PN_CON_CLR
, USB3_PN_CON
);
990 return usb3_wait(usb3
, USB3_PN_CON
, PN_CON_CLR
, 0);
993 static bool usb3_is_transfer_complete(struct renesas_usb3_ep
*usb3_ep
,
994 struct renesas_usb3_request
*usb3_req
)
996 struct usb_request
*req
= &usb3_req
->req
;
998 if ((!req
->zero
&& req
->actual
== req
->length
) ||
999 (req
->actual
% usb3_ep
->ep
.maxpacket
) || (req
->length
== 0))
1005 static int usb3_wait_pipe_status(struct renesas_usb3_ep
*usb3_ep
, u32 mask
)
1007 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1008 u32 sta_reg
= usb3_ep
->num
? USB3_PN_STA
: USB3_P0_STA
;
1010 return usb3_wait(usb3
, sta_reg
, mask
, mask
);
1013 static void usb3_set_px_con_send(struct renesas_usb3_ep
*usb3_ep
, int bytes
,
1016 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1017 u32 con_reg
= usb3_ep
->num
? USB3_PN_CON
: USB3_P0_CON
;
1018 u32 val
= usb3_read(usb3
, con_reg
);
1020 val
|= PX_CON_SEND
| PX_CON_BYTE_EN_BYTES(bytes
);
1021 val
|= (usb3_ep
->num
&& last
) ? PN_CON_LAST
: 0;
1022 usb3_write(usb3
, val
, con_reg
);
1025 static int usb3_write_pipe(struct renesas_usb3_ep
*usb3_ep
,
1026 struct renesas_usb3_request
*usb3_req
,
1029 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1031 int len
= min_t(unsigned, usb3_req
->req
.length
- usb3_req
->req
.actual
,
1032 usb3_ep
->ep
.maxpacket
);
1033 u8
*buf
= usb3_req
->req
.buf
+ usb3_req
->req
.actual
;
1037 if (usb3_wait_pipe_status(usb3_ep
, PX_STA_BUFSTS
) < 0)
1040 /* Update gadget driver parameter */
1041 usb3_req
->req
.actual
+= len
;
1043 /* Write data to the register */
1045 iowrite32_rep(usb3
->reg
+ fifo_reg
, buf
, len
/ 4);
1046 buf
+= (len
/ 4) * 4;
1047 len
%= 4; /* update len to use usb3_set_pX_con_send() */
1051 for (i
= 0; i
< len
; i
++)
1052 tmp
|= buf
[i
] << (8 * i
);
1053 usb3_write(usb3
, tmp
, fifo_reg
);
1056 is_last
= usb3_is_transfer_complete(usb3_ep
, usb3_req
);
1058 usb3_set_px_con_send(usb3_ep
, len
, is_last
);
1060 return is_last
? 0 : -EAGAIN
;
1063 static u32
usb3_get_received_length(struct renesas_usb3_ep
*usb3_ep
)
1065 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1066 u32 lng_reg
= usb3_ep
->num
? USB3_PN_LNG
: USB3_P0_LNG
;
1068 return usb3_read(usb3
, lng_reg
);
1071 static int usb3_read_pipe(struct renesas_usb3_ep
*usb3_ep
,
1072 struct renesas_usb3_request
*usb3_req
, u32 fifo_reg
)
1074 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1076 int len
= min_t(unsigned, usb3_req
->req
.length
- usb3_req
->req
.actual
,
1077 usb3_get_received_length(usb3_ep
));
1078 u8
*buf
= usb3_req
->req
.buf
+ usb3_req
->req
.actual
;
1084 /* Update gadget driver parameter */
1085 usb3_req
->req
.actual
+= len
;
1087 /* Read data from the register */
1089 ioread32_rep(usb3
->reg
+ fifo_reg
, buf
, len
/ 4);
1090 buf
+= (len
/ 4) * 4;
1095 tmp
= usb3_read(usb3
, fifo_reg
);
1096 for (i
= 0; i
< len
; i
++)
1097 buf
[i
] = (tmp
>> (8 * i
)) & 0xff;
1100 return usb3_is_transfer_complete(usb3_ep
, usb3_req
) ? 0 : -EAGAIN
;
1103 static void usb3_set_status_stage(struct renesas_usb3_ep
*usb3_ep
,
1104 struct renesas_usb3_request
*usb3_req
)
1106 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1108 if (usb3_ep
->dir_in
) {
1109 usb3_set_p0_con_for_ctrl_read_status(usb3
);
1111 if (!usb3_req
->req
.length
)
1112 usb3_set_p0_con_for_no_data(usb3
);
1114 usb3_set_p0_con_for_ctrl_write_status(usb3
);
1118 static void usb3_p0_xfer(struct renesas_usb3_ep
*usb3_ep
,
1119 struct renesas_usb3_request
*usb3_req
)
1123 if (usb3_ep
->dir_in
)
1124 ret
= usb3_write_pipe(usb3_ep
, usb3_req
, USB3_P0_WRITE
);
1126 ret
= usb3_read_pipe(usb3_ep
, usb3_req
, USB3_P0_READ
);
1129 usb3_set_status_stage(usb3_ep
, usb3_req
);
1132 static void usb3_start_pipe0(struct renesas_usb3_ep
*usb3_ep
,
1133 struct renesas_usb3_request
*usb3_req
)
1135 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1137 if (usb3_ep
->started
)
1140 usb3_ep
->started
= true;
1142 if (usb3_ep
->dir_in
) {
1143 usb3_set_bit(usb3
, P0_MOD_DIR
, USB3_P0_MOD
);
1144 usb3_set_p0_con_for_ctrl_read_data(usb3
);
1146 usb3_clear_bit(usb3
, P0_MOD_DIR
, USB3_P0_MOD
);
1147 usb3_set_p0_con_for_ctrl_write_data(usb3
);
1150 usb3_p0_xfer(usb3_ep
, usb3_req
);
1153 static void usb3_enable_dma_pipen(struct renesas_usb3
*usb3
)
1155 usb3_set_bit(usb3
, PN_CON_DATAIF_EN
, USB3_PN_CON
);
1158 static void usb3_disable_dma_pipen(struct renesas_usb3
*usb3
)
1160 usb3_clear_bit(usb3
, PN_CON_DATAIF_EN
, USB3_PN_CON
);
1163 static void usb3_enable_dma_irq(struct renesas_usb3
*usb3
, int num
)
1165 usb3_set_bit(usb3
, DMA_INT(num
), USB3_DMA_INT_ENA
);
1168 static void usb3_disable_dma_irq(struct renesas_usb3
*usb3
, int num
)
1170 usb3_clear_bit(usb3
, DMA_INT(num
), USB3_DMA_INT_ENA
);
1173 static u32
usb3_dma_mps_to_prd_word1(struct renesas_usb3_ep
*usb3_ep
)
1175 switch (usb3_ep
->ep
.maxpacket
) {
1177 return USB3_PRD1_MPS_8
;
1179 return USB3_PRD1_MPS_16
;
1181 return USB3_PRD1_MPS_32
;
1183 return USB3_PRD1_MPS_64
;
1185 return USB3_PRD1_MPS_512
;
1187 return USB3_PRD1_MPS_1024
;
1189 return USB3_PRD1_MPS_RESERVED
;
1193 static bool usb3_dma_get_setting_area(struct renesas_usb3_ep
*usb3_ep
,
1194 struct renesas_usb3_request
*usb3_req
)
1196 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1197 struct renesas_usb3_dma
*dma
;
1201 if (usb3_req
->req
.length
> USB3_DMA_MAX_XFER_SIZE_ALL_PRDS
) {
1202 dev_dbg(usb3_to_dev(usb3
), "%s: the length is too big (%d)\n",
1203 __func__
, usb3_req
->req
.length
);
1207 /* The driver doesn't handle zero-length packet via dmac */
1208 if (!usb3_req
->req
.length
)
1211 if (usb3_dma_mps_to_prd_word1(usb3_ep
) == USB3_PRD1_MPS_RESERVED
)
1214 usb3_for_each_dma(usb3
, dma
, i
) {
1218 if (usb_gadget_map_request(&usb3
->gadget
, &usb3_req
->req
,
1219 usb3_ep
->dir_in
) < 0)
1231 static void usb3_dma_put_setting_area(struct renesas_usb3_ep
*usb3_ep
,
1232 struct renesas_usb3_request
*usb3_req
)
1234 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1236 struct renesas_usb3_dma
*dma
;
1238 usb3_for_each_dma(usb3
, dma
, i
) {
1239 if (usb3_ep
->dma
== dma
) {
1240 usb_gadget_unmap_request(&usb3
->gadget
, &usb3_req
->req
,
1243 usb3_ep
->dma
= NULL
;
1249 static void usb3_dma_fill_prd(struct renesas_usb3_ep
*usb3_ep
,
1250 struct renesas_usb3_request
*usb3_req
)
1252 struct renesas_usb3_prd
*cur_prd
= usb3_ep
->dma
->prd
;
1253 u32 remain
= usb3_req
->req
.length
;
1254 u32 dma
= usb3_req
->req
.dma
;
1259 len
= min_t(u32
, remain
, USB3_DMA_MAX_XFER_SIZE
) &
1260 USB3_PRD1_SIZE_MASK
;
1261 cur_prd
->word1
= usb3_dma_mps_to_prd_word1(usb3_ep
) |
1262 USB3_PRD1_B_INC
| len
;
1266 if (!remain
|| (i
+ 1) < USB3_DMA_NUM_PRD_ENTRIES
)
1273 cur_prd
->word1
|= USB3_PRD1_E
| USB3_PRD1_INT
;
1274 if (usb3_ep
->dir_in
)
1275 cur_prd
->word1
|= USB3_PRD1_LST
;
1278 static void usb3_dma_kick_prd(struct renesas_usb3_ep
*usb3_ep
)
1280 struct renesas_usb3_dma
*dma
= usb3_ep
->dma
;
1281 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1282 u32 dma_con
= DMA_COM_PIPE_NO(usb3_ep
->num
) | DMA_CON_PRD_EN
;
1284 if (usb3_ep
->dir_in
)
1285 dma_con
|= DMA_CON_PIPE_DIR
;
1287 wmb(); /* prd entries should be in system memory here */
1289 usb3_write(usb3
, 1 << usb3_ep
->num
, USB3_DMA_INT_STA
);
1290 usb3_write(usb3
, AXI_INT_PRDEN_CLR_STA(dma
->num
) |
1291 AXI_INT_PRDERR_STA(dma
->num
), USB3_AXI_INT_STA
);
1293 usb3_write(usb3
, dma
->prd_dma
, USB3_DMA_CH0_PRD_ADR(dma
->num
));
1294 usb3_write(usb3
, dma_con
, USB3_DMA_CH0_CON(dma
->num
));
1295 usb3_enable_dma_irq(usb3
, usb3_ep
->num
);
1298 static void usb3_dma_stop_prd(struct renesas_usb3_ep
*usb3_ep
)
1300 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1301 struct renesas_usb3_dma
*dma
= usb3_ep
->dma
;
1303 usb3_disable_dma_irq(usb3
, usb3_ep
->num
);
1304 usb3_write(usb3
, 0, USB3_DMA_CH0_CON(dma
->num
));
1307 static int usb3_dma_update_status(struct renesas_usb3_ep
*usb3_ep
,
1308 struct renesas_usb3_request
*usb3_req
)
1310 struct renesas_usb3_prd
*cur_prd
= usb3_ep
->dma
->prd
;
1311 struct usb_request
*req
= &usb3_req
->req
;
1316 rmb(); /* The controller updated prd entries */
1319 if (cur_prd
->word1
& USB3_PRD1_D
)
1321 if (cur_prd
->word1
& USB3_PRD1_E
)
1322 len
= req
->length
% USB3_DMA_MAX_XFER_SIZE
;
1324 len
= USB3_DMA_MAX_XFER_SIZE
;
1325 remain
= cur_prd
->word1
& USB3_PRD1_SIZE_MASK
;
1326 req
->actual
+= len
- remain
;
1328 if (cur_prd
->word1
& USB3_PRD1_E
||
1329 (i
+ 1) < USB3_DMA_NUM_PRD_ENTRIES
)
1339 static bool usb3_dma_try_start(struct renesas_usb3_ep
*usb3_ep
,
1340 struct renesas_usb3_request
*usb3_req
)
1342 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1347 if (usb3_dma_get_setting_area(usb3_ep
, usb3_req
)) {
1349 usb3_enable_dma_pipen(usb3
);
1350 usb3_dma_fill_prd(usb3_ep
, usb3_req
);
1351 usb3_dma_kick_prd(usb3_ep
);
1352 usb3_pn_start(usb3
);
1359 static int usb3_dma_try_stop(struct renesas_usb3_ep
*usb3_ep
,
1360 struct renesas_usb3_request
*usb3_req
)
1362 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1363 unsigned long flags
;
1366 spin_lock_irqsave(&usb3
->lock
, flags
);
1370 if (!usb3_pn_change(usb3
, usb3_ep
->num
))
1371 usb3_disable_dma_pipen(usb3
);
1372 usb3_dma_stop_prd(usb3_ep
);
1373 status
= usb3_dma_update_status(usb3_ep
, usb3_req
);
1374 usb3_dma_put_setting_area(usb3_ep
, usb3_req
);
1377 spin_unlock_irqrestore(&usb3
->lock
, flags
);
1381 static int renesas_usb3_dma_free_prd(struct renesas_usb3
*usb3
,
1385 struct renesas_usb3_dma
*dma
;
1387 usb3_for_each_dma(usb3
, dma
, i
) {
1389 dma_free_coherent(dev
, USB3_DMA_PRD_SIZE
,
1390 dma
->prd
, dma
->prd_dma
);
1398 static int renesas_usb3_dma_alloc_prd(struct renesas_usb3
*usb3
,
1402 struct renesas_usb3_dma
*dma
;
1407 usb3_for_each_dma(usb3
, dma
, i
) {
1408 dma
->prd
= dma_alloc_coherent(dev
, USB3_DMA_PRD_SIZE
,
1409 &dma
->prd_dma
, GFP_KERNEL
);
1411 renesas_usb3_dma_free_prd(usb3
, dev
);
1420 static void usb3_start_pipen(struct renesas_usb3_ep
*usb3_ep
,
1421 struct renesas_usb3_request
*usb3_req
)
1423 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1424 struct renesas_usb3_request
*usb3_req_first
= usb3_get_request(usb3_ep
);
1425 unsigned long flags
;
1427 u32 enable_bits
= 0;
1429 spin_lock_irqsave(&usb3
->lock
, flags
);
1430 if (usb3_ep
->halt
|| usb3_ep
->started
)
1432 if (usb3_req
!= usb3_req_first
)
1435 if (usb3_pn_change(usb3
, usb3_ep
->num
) < 0)
1438 usb3_ep
->started
= true;
1440 if (usb3_dma_try_start(usb3_ep
, usb3_req
))
1443 usb3_pn_start(usb3
);
1445 if (usb3_ep
->dir_in
) {
1446 ret
= usb3_write_pipe(usb3_ep
, usb3_req
, USB3_PN_WRITE
);
1447 enable_bits
|= PN_INT_LSTTR
;
1451 enable_bits
|= PN_INT_BFRDY
;
1454 usb3_set_bit(usb3
, enable_bits
, USB3_PN_INT_ENA
);
1455 usb3_enable_pipe_irq(usb3
, usb3_ep
->num
);
1458 spin_unlock_irqrestore(&usb3
->lock
, flags
);
1461 static int renesas_usb3_ep_queue(struct usb_ep
*_ep
, struct usb_request
*_req
,
1464 struct renesas_usb3_ep
*usb3_ep
= usb_ep_to_usb3_ep(_ep
);
1465 struct renesas_usb3_request
*usb3_req
= usb_req_to_usb3_req(_req
);
1466 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1467 unsigned long flags
;
1469 dev_dbg(usb3_to_dev(usb3
), "ep_queue: ep%2d, %u\n", usb3_ep
->num
,
1472 _req
->status
= -EINPROGRESS
;
1474 spin_lock_irqsave(&usb3
->lock
, flags
);
1475 list_add_tail(&usb3_req
->queue
, &usb3_ep
->queue
);
1476 spin_unlock_irqrestore(&usb3
->lock
, flags
);
1479 usb3_start_pipe0(usb3_ep
, usb3_req
);
1481 usb3_start_pipen(usb3_ep
, usb3_req
);
1486 static void usb3_set_device_address(struct renesas_usb3
*usb3
, u16 addr
)
1488 /* DEV_ADDR bit field is cleared by WarmReset, HotReset and BusReset */
1489 usb3_set_bit(usb3
, USB_COM_CON_DEV_ADDR(addr
), USB3_USB_COM_CON
);
1492 static bool usb3_std_req_set_address(struct renesas_usb3
*usb3
,
1493 struct usb_ctrlrequest
*ctrl
)
1495 if (ctrl
->wValue
>= 128)
1496 return true; /* stall */
1498 usb3_set_device_address(usb3
, ctrl
->wValue
);
1499 usb3_set_p0_con_for_no_data(usb3
);
1504 static void usb3_pipe0_internal_xfer(struct renesas_usb3
*usb3
,
1505 void *tx_data
, size_t len
,
1506 void (*complete
)(struct usb_ep
*ep
,
1507 struct usb_request
*req
))
1509 struct renesas_usb3_ep
*usb3_ep
= usb3_get_ep(usb3
, 0);
1512 memcpy(usb3
->ep0_buf
, tx_data
,
1513 min_t(size_t, len
, USB3_EP0_BUF_SIZE
));
1515 usb3
->ep0_req
->buf
= &usb3
->ep0_buf
;
1516 usb3
->ep0_req
->length
= len
;
1517 usb3
->ep0_req
->complete
= complete
;
1518 renesas_usb3_ep_queue(&usb3_ep
->ep
, usb3
->ep0_req
, GFP_ATOMIC
);
1521 static void usb3_pipe0_get_status_completion(struct usb_ep
*ep
,
1522 struct usb_request
*req
)
1526 static bool usb3_std_req_get_status(struct renesas_usb3
*usb3
,
1527 struct usb_ctrlrequest
*ctrl
)
1530 struct renesas_usb3_ep
*usb3_ep
;
1534 switch (ctrl
->bRequestType
& USB_RECIP_MASK
) {
1535 case USB_RECIP_DEVICE
:
1536 if (usb3
->gadget
.is_selfpowered
)
1537 status
|= 1 << USB_DEVICE_SELF_POWERED
;
1538 if (usb3
->gadget
.speed
== USB_SPEED_SUPER
)
1539 status
|= usb3_feature_get_un_enabled(usb3
);
1541 case USB_RECIP_INTERFACE
:
1543 case USB_RECIP_ENDPOINT
:
1544 num
= le16_to_cpu(ctrl
->wIndex
) & USB_ENDPOINT_NUMBER_MASK
;
1545 usb3_ep
= usb3_get_ep(usb3
, num
);
1547 status
|= 1 << USB_ENDPOINT_HALT
;
1555 status
= cpu_to_le16(status
);
1556 dev_dbg(usb3_to_dev(usb3
), "get_status: req = %p\n",
1557 usb_req_to_usb3_req(usb3
->ep0_req
));
1558 usb3_pipe0_internal_xfer(usb3
, &status
, sizeof(status
),
1559 usb3_pipe0_get_status_completion
);
1565 static bool usb3_std_req_feature_device(struct renesas_usb3
*usb3
,
1566 struct usb_ctrlrequest
*ctrl
, bool set
)
1569 u16 w_value
= le16_to_cpu(ctrl
->wValue
);
1572 case USB_DEVICE_TEST_MODE
:
1575 usb3
->test_mode
= le16_to_cpu(ctrl
->wIndex
) >> 8;
1578 case USB_DEVICE_U1_ENABLE
:
1579 case USB_DEVICE_U2_ENABLE
:
1580 if (usb3
->gadget
.speed
!= USB_SPEED_SUPER
)
1582 if (w_value
== USB_DEVICE_U1_ENABLE
)
1583 usb3_feature_u1_enable(usb3
, set
);
1584 if (w_value
== USB_DEVICE_U2_ENABLE
)
1585 usb3_feature_u2_enable(usb3
, set
);
1595 static int usb3_set_halt_p0(struct renesas_usb3_ep
*usb3_ep
, bool halt
)
1597 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1599 if (unlikely(usb3_ep
->num
))
1602 usb3_ep
->halt
= halt
;
1604 usb3_set_p0_con_stall(usb3
);
1606 usb3_set_p0_con_stop(usb3
);
1611 static int usb3_set_halt_pn(struct renesas_usb3_ep
*usb3_ep
, bool halt
,
1612 bool is_clear_feature
)
1614 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
1615 unsigned long flags
;
1617 spin_lock_irqsave(&usb3
->lock
, flags
);
1618 if (!usb3_pn_change(usb3
, usb3_ep
->num
)) {
1619 usb3_ep
->halt
= halt
;
1621 usb3_pn_stall(usb3
);
1622 } else if (!is_clear_feature
|| !usb3_ep
->wedge
) {
1623 usb3_pn_con_clear(usb3
);
1624 usb3_set_bit(usb3
, PN_CON_EN
, USB3_PN_CON
);
1628 spin_unlock_irqrestore(&usb3
->lock
, flags
);
1633 static int usb3_set_halt(struct renesas_usb3_ep
*usb3_ep
, bool halt
,
1634 bool is_clear_feature
)
1638 if (halt
&& usb3_ep
->started
)
1642 ret
= usb3_set_halt_pn(usb3_ep
, halt
, is_clear_feature
);
1644 ret
= usb3_set_halt_p0(usb3_ep
, halt
);
1649 static bool usb3_std_req_feature_endpoint(struct renesas_usb3
*usb3
,
1650 struct usb_ctrlrequest
*ctrl
,
1653 int num
= le16_to_cpu(ctrl
->wIndex
) & USB_ENDPOINT_NUMBER_MASK
;
1654 struct renesas_usb3_ep
*usb3_ep
;
1655 struct renesas_usb3_request
*usb3_req
;
1657 if (le16_to_cpu(ctrl
->wValue
) != USB_ENDPOINT_HALT
)
1658 return true; /* stall */
1660 usb3_ep
= usb3_get_ep(usb3
, num
);
1661 usb3_set_halt(usb3_ep
, set
, true);
1663 /* Restarts a queue if clear feature */
1665 usb3_ep
->started
= false;
1666 usb3_req
= usb3_get_request(usb3_ep
);
1668 usb3_start_pipen(usb3_ep
, usb3_req
);
1674 static bool usb3_std_req_feature(struct renesas_usb3
*usb3
,
1675 struct usb_ctrlrequest
*ctrl
, bool set
)
1679 switch (ctrl
->bRequestType
& USB_RECIP_MASK
) {
1680 case USB_RECIP_DEVICE
:
1681 stall
= usb3_std_req_feature_device(usb3
, ctrl
, set
);
1683 case USB_RECIP_INTERFACE
:
1685 case USB_RECIP_ENDPOINT
:
1686 stall
= usb3_std_req_feature_endpoint(usb3
, ctrl
, set
);
1694 usb3_set_p0_con_for_no_data(usb3
);
1699 static void usb3_pipe0_set_sel_completion(struct usb_ep
*ep
,
1700 struct usb_request
*req
)
1705 static bool usb3_std_req_set_sel(struct renesas_usb3
*usb3
,
1706 struct usb_ctrlrequest
*ctrl
)
1708 u16 w_length
= le16_to_cpu(ctrl
->wLength
);
1711 return true; /* stall */
1713 dev_dbg(usb3_to_dev(usb3
), "set_sel: req = %p\n",
1714 usb_req_to_usb3_req(usb3
->ep0_req
));
1715 usb3_pipe0_internal_xfer(usb3
, NULL
, 6, usb3_pipe0_set_sel_completion
);
1720 static bool usb3_std_req_set_configuration(struct renesas_usb3
*usb3
,
1721 struct usb_ctrlrequest
*ctrl
)
1723 if (ctrl
->wValue
> 0)
1724 usb3_set_bit(usb3
, USB_COM_CON_CONF
, USB3_USB_COM_CON
);
1726 usb3_clear_bit(usb3
, USB_COM_CON_CONF
, USB3_USB_COM_CON
);
1732 * usb3_handle_standard_request - handle some standard requests
1733 * @usb3: the renesas_usb3 pointer
1734 * @ctrl: a pointer of setup data
1736 * Returns true if this function handled a standard request
1738 static bool usb3_handle_standard_request(struct renesas_usb3
*usb3
,
1739 struct usb_ctrlrequest
*ctrl
)
1744 if ((ctrl
->bRequestType
& USB_TYPE_MASK
) == USB_TYPE_STANDARD
) {
1745 switch (ctrl
->bRequest
) {
1746 case USB_REQ_SET_ADDRESS
:
1747 stall
= usb3_std_req_set_address(usb3
, ctrl
);
1750 case USB_REQ_GET_STATUS
:
1751 stall
= usb3_std_req_get_status(usb3
, ctrl
);
1754 case USB_REQ_CLEAR_FEATURE
:
1755 stall
= usb3_std_req_feature(usb3
, ctrl
, false);
1758 case USB_REQ_SET_FEATURE
:
1759 stall
= usb3_std_req_feature(usb3
, ctrl
, true);
1762 case USB_REQ_SET_SEL
:
1763 stall
= usb3_std_req_set_sel(usb3
, ctrl
);
1766 case USB_REQ_SET_ISOCH_DELAY
:
1767 /* This hardware doesn't support Isochronous xfer */
1771 case USB_REQ_SET_CONFIGURATION
:
1772 usb3_std_req_set_configuration(usb3
, ctrl
);
1780 usb3_set_p0_con_stall(usb3
);
1785 static int usb3_p0_con_clear_buffer(struct renesas_usb3
*usb3
)
1787 usb3_set_bit(usb3
, P0_CON_BCLR
, USB3_P0_CON
);
1789 return usb3_wait(usb3
, USB3_P0_CON
, P0_CON_BCLR
, 0);
1792 static void usb3_irq_epc_pipe0_setup(struct renesas_usb3
*usb3
)
1794 struct usb_ctrlrequest ctrl
;
1795 struct renesas_usb3_ep
*usb3_ep
= usb3_get_ep(usb3
, 0);
1797 /* Call giveback function if previous transfer is not completed */
1798 if (usb3_ep
->started
)
1799 usb3_request_done(usb3_ep
, usb3_get_request(usb3_ep
),
1802 usb3_p0_con_clear_buffer(usb3
);
1803 usb3_get_setup_data(usb3
, &ctrl
);
1804 if (!usb3_handle_standard_request(usb3
, &ctrl
))
1805 if (usb3
->driver
->setup(&usb3
->gadget
, &ctrl
) < 0)
1806 usb3_set_p0_con_stall(usb3
);
1809 static void usb3_irq_epc_pipe0_bfrdy(struct renesas_usb3
*usb3
)
1811 struct renesas_usb3_ep
*usb3_ep
= usb3_get_ep(usb3
, 0);
1812 struct renesas_usb3_request
*usb3_req
= usb3_get_request(usb3_ep
);
1817 usb3_p0_xfer(usb3_ep
, usb3_req
);
1820 static void usb3_irq_epc_pipe0(struct renesas_usb3
*usb3
)
1822 u32 p0_int_sta
= usb3_read(usb3
, USB3_P0_INT_STA
);
1824 p0_int_sta
&= usb3_read(usb3
, USB3_P0_INT_ENA
);
1825 usb3_write(usb3
, p0_int_sta
, USB3_P0_INT_STA
);
1826 if (p0_int_sta
& P0_INT_STSED
)
1827 usb3_irq_epc_pipe0_status_end(usb3
);
1828 if (p0_int_sta
& P0_INT_SETUP
)
1829 usb3_irq_epc_pipe0_setup(usb3
);
1830 if (p0_int_sta
& P0_INT_BFRDY
)
1831 usb3_irq_epc_pipe0_bfrdy(usb3
);
1834 static void usb3_request_done_pipen(struct renesas_usb3
*usb3
,
1835 struct renesas_usb3_ep
*usb3_ep
,
1836 struct renesas_usb3_request
*usb3_req
,
1839 unsigned long flags
;
1841 spin_lock_irqsave(&usb3
->lock
, flags
);
1842 if (usb3_pn_change(usb3
, usb3_ep
->num
))
1844 spin_unlock_irqrestore(&usb3
->lock
, flags
);
1846 usb3_disable_pipe_irq(usb3
, usb3_ep
->num
);
1847 usb3_request_done(usb3_ep
, usb3_req
, status
);
1849 /* get next usb3_req */
1850 usb3_req
= usb3_get_request(usb3_ep
);
1852 usb3_start_pipen(usb3_ep
, usb3_req
);
1855 static void usb3_irq_epc_pipen_lsttr(struct renesas_usb3
*usb3
, int num
)
1857 struct renesas_usb3_ep
*usb3_ep
= usb3_get_ep(usb3
, num
);
1858 struct renesas_usb3_request
*usb3_req
= usb3_get_request(usb3_ep
);
1863 if (usb3_ep
->dir_in
) {
1864 dev_dbg(usb3_to_dev(usb3
), "%s: len = %u, actual = %u\n",
1865 __func__
, usb3_req
->req
.length
, usb3_req
->req
.actual
);
1866 usb3_request_done_pipen(usb3
, usb3_ep
, usb3_req
, 0);
1870 static void usb3_irq_epc_pipen_bfrdy(struct renesas_usb3
*usb3
, int num
)
1872 struct renesas_usb3_ep
*usb3_ep
= usb3_get_ep(usb3
, num
);
1873 struct renesas_usb3_request
*usb3_req
= usb3_get_request(usb3_ep
);
1879 spin_lock(&usb3
->lock
);
1880 if (usb3_pn_change(usb3
, num
))
1883 if (usb3_ep
->dir_in
) {
1884 /* Do not stop the IN pipe here to detect LSTTR interrupt */
1885 if (!usb3_write_pipe(usb3_ep
, usb3_req
, USB3_PN_WRITE
))
1886 usb3_clear_bit(usb3
, PN_INT_BFRDY
, USB3_PN_INT_ENA
);
1888 if (!usb3_read_pipe(usb3_ep
, usb3_req
, USB3_PN_READ
))
1893 /* need to unlock because usb3_request_done_pipen() locks it */
1894 spin_unlock(&usb3
->lock
);
1897 usb3_request_done_pipen(usb3
, usb3_ep
, usb3_req
, 0);
1900 static void usb3_irq_epc_pipen(struct renesas_usb3
*usb3
, int num
)
1904 spin_lock(&usb3
->lock
);
1905 if (usb3_pn_change(usb3
, num
) < 0) {
1906 spin_unlock(&usb3
->lock
);
1910 pn_int_sta
= usb3_read(usb3
, USB3_PN_INT_STA
);
1911 pn_int_sta
&= usb3_read(usb3
, USB3_PN_INT_ENA
);
1912 usb3_write(usb3
, pn_int_sta
, USB3_PN_INT_STA
);
1913 spin_unlock(&usb3
->lock
);
1914 if (pn_int_sta
& PN_INT_LSTTR
)
1915 usb3_irq_epc_pipen_lsttr(usb3
, num
);
1916 if (pn_int_sta
& PN_INT_BFRDY
)
1917 usb3_irq_epc_pipen_bfrdy(usb3
, num
);
1920 static void usb3_irq_epc_int_2(struct renesas_usb3
*usb3
, u32 int_sta_2
)
1924 for (i
= 0; i
< usb3
->num_usb3_eps
; i
++) {
1925 if (int_sta_2
& USB_INT_2_PIPE(i
)) {
1927 usb3_irq_epc_pipe0(usb3
);
1929 usb3_irq_epc_pipen(usb3
, i
);
1934 static void usb3_irq_idmon_change(struct renesas_usb3
*usb3
)
1936 usb3_check_id(usb3
);
1939 static void usb3_irq_otg_int(struct renesas_usb3
*usb3
, u32 otg_int_sta
)
1941 if (otg_int_sta
& USB_OTG_IDMON
)
1942 usb3_irq_idmon_change(usb3
);
1945 static void usb3_irq_epc(struct renesas_usb3
*usb3
)
1947 u32 int_sta_1
= usb3_read(usb3
, USB3_USB_INT_STA_1
);
1948 u32 int_sta_2
= usb3_read(usb3
, USB3_USB_INT_STA_2
);
1949 u32 otg_int_sta
= usb3_read(usb3
, USB3_USB_OTG_INT_STA
);
1951 int_sta_1
&= usb3_read(usb3
, USB3_USB_INT_ENA_1
);
1953 usb3_write(usb3
, int_sta_1
, USB3_USB_INT_STA_1
);
1954 usb3_irq_epc_int_1(usb3
, int_sta_1
);
1957 int_sta_2
&= usb3_read(usb3
, USB3_USB_INT_ENA_2
);
1959 usb3_irq_epc_int_2(usb3
, int_sta_2
);
1961 otg_int_sta
&= usb3_read(usb3
, USB3_USB_OTG_INT_ENA
);
1963 usb3_write(usb3
, otg_int_sta
, USB3_USB_OTG_INT_STA
);
1964 usb3_irq_otg_int(usb3
, otg_int_sta
);
1968 static void usb3_irq_dma_int(struct renesas_usb3
*usb3
, u32 dma_sta
)
1970 struct renesas_usb3_ep
*usb3_ep
;
1971 struct renesas_usb3_request
*usb3_req
;
1974 for (i
= 0; i
< usb3
->num_usb3_eps
; i
++) {
1975 if (!(dma_sta
& DMA_INT(i
)))
1978 usb3_ep
= usb3_get_ep(usb3
, i
);
1979 if (!(usb3_read(usb3
, USB3_AXI_INT_STA
) &
1980 AXI_INT_PRDEN_CLR_STA(usb3_ep
->dma
->num
)))
1983 usb3_req
= usb3_get_request(usb3_ep
);
1984 status
= usb3_dma_try_stop(usb3_ep
, usb3_req
);
1985 usb3_request_done_pipen(usb3
, usb3_ep
, usb3_req
, status
);
1989 static void usb3_irq_dma(struct renesas_usb3
*usb3
)
1991 u32 dma_sta
= usb3_read(usb3
, USB3_DMA_INT_STA
);
1993 dma_sta
&= usb3_read(usb3
, USB3_DMA_INT_ENA
);
1995 usb3_write(usb3
, dma_sta
, USB3_DMA_INT_STA
);
1996 usb3_irq_dma_int(usb3
, dma_sta
);
2000 static irqreturn_t
renesas_usb3_irq(int irq
, void *_usb3
)
2002 struct renesas_usb3
*usb3
= _usb3
;
2003 irqreturn_t ret
= IRQ_NONE
;
2004 u32 axi_int_sta
= usb3_read(usb3
, USB3_AXI_INT_STA
);
2006 if (axi_int_sta
& AXI_INT_DMAINT
) {
2011 if (axi_int_sta
& AXI_INT_EPCINT
) {
2019 static void usb3_write_pn_mod(struct renesas_usb3_ep
*usb3_ep
,
2020 const struct usb_endpoint_descriptor
*desc
)
2022 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
2025 val
|= usb3_ep
->dir_in
? PN_MOD_DIR
: 0;
2026 val
|= PN_MOD_TYPE(usb_endpoint_type(desc
));
2027 val
|= PN_MOD_EPNUM(usb_endpoint_num(desc
));
2028 usb3_write(usb3
, val
, USB3_PN_MOD
);
2031 static u32
usb3_calc_ramarea(int ram_size
)
2033 WARN_ON(ram_size
> SZ_16K
);
2035 if (ram_size
<= SZ_1K
)
2036 return PN_RAMMAP_RAMAREA_1KB
;
2037 else if (ram_size
<= SZ_2K
)
2038 return PN_RAMMAP_RAMAREA_2KB
;
2039 else if (ram_size
<= SZ_4K
)
2040 return PN_RAMMAP_RAMAREA_4KB
;
2041 else if (ram_size
<= SZ_8K
)
2042 return PN_RAMMAP_RAMAREA_8KB
;
2044 return PN_RAMMAP_RAMAREA_16KB
;
2047 static u32
usb3_calc_rammap_val(struct renesas_usb3_ep
*usb3_ep
,
2048 const struct usb_endpoint_descriptor
*desc
)
2050 return usb3_ep
->rammap_val
| PN_RAMMAP_MPKT(usb_endpoint_maxp(desc
));
2053 static int usb3_enable_pipe_n(struct renesas_usb3_ep
*usb3_ep
,
2054 const struct usb_endpoint_descriptor
*desc
)
2056 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
2057 unsigned long flags
;
2059 usb3_ep
->dir_in
= usb_endpoint_dir_in(desc
);
2061 spin_lock_irqsave(&usb3
->lock
, flags
);
2062 if (!usb3_pn_change(usb3
, usb3_ep
->num
)) {
2063 usb3_write_pn_mod(usb3_ep
, desc
);
2064 usb3_write(usb3
, usb3_calc_rammap_val(usb3_ep
, desc
),
2066 usb3_pn_con_clear(usb3
);
2067 usb3_set_bit(usb3
, PN_CON_EN
, USB3_PN_CON
);
2069 spin_unlock_irqrestore(&usb3
->lock
, flags
);
2074 static int usb3_disable_pipe_n(struct renesas_usb3_ep
*usb3_ep
)
2076 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
2077 unsigned long flags
;
2079 usb3_ep
->halt
= false;
2081 spin_lock_irqsave(&usb3
->lock
, flags
);
2082 if (!usb3_pn_change(usb3
, usb3_ep
->num
)) {
2083 usb3_write(usb3
, 0, USB3_PN_INT_ENA
);
2084 usb3_write(usb3
, 0, USB3_PN_RAMMAP
);
2085 usb3_clear_bit(usb3
, PN_CON_EN
, USB3_PN_CON
);
2087 spin_unlock_irqrestore(&usb3
->lock
, flags
);
2092 /*------- usb_ep_ops -----------------------------------------------------*/
2093 static int renesas_usb3_ep_enable(struct usb_ep
*_ep
,
2094 const struct usb_endpoint_descriptor
*desc
)
2096 struct renesas_usb3_ep
*usb3_ep
= usb_ep_to_usb3_ep(_ep
);
2098 return usb3_enable_pipe_n(usb3_ep
, desc
);
2101 static int renesas_usb3_ep_disable(struct usb_ep
*_ep
)
2103 struct renesas_usb3_ep
*usb3_ep
= usb_ep_to_usb3_ep(_ep
);
2104 struct renesas_usb3_request
*usb3_req
;
2107 usb3_req
= usb3_get_request(usb3_ep
);
2110 usb3_dma_try_stop(usb3_ep
, usb3_req
);
2111 usb3_request_done(usb3_ep
, usb3_req
, -ESHUTDOWN
);
2114 return usb3_disable_pipe_n(usb3_ep
);
2117 static struct usb_request
*__renesas_usb3_ep_alloc_request(gfp_t gfp_flags
)
2119 struct renesas_usb3_request
*usb3_req
;
2121 usb3_req
= kzalloc(sizeof(struct renesas_usb3_request
), gfp_flags
);
2125 INIT_LIST_HEAD(&usb3_req
->queue
);
2127 return &usb3_req
->req
;
2130 static void __renesas_usb3_ep_free_request(struct usb_request
*_req
)
2132 struct renesas_usb3_request
*usb3_req
= usb_req_to_usb3_req(_req
);
2137 static struct usb_request
*renesas_usb3_ep_alloc_request(struct usb_ep
*_ep
,
2140 return __renesas_usb3_ep_alloc_request(gfp_flags
);
2143 static void renesas_usb3_ep_free_request(struct usb_ep
*_ep
,
2144 struct usb_request
*_req
)
2146 __renesas_usb3_ep_free_request(_req
);
2149 static int renesas_usb3_ep_dequeue(struct usb_ep
*_ep
, struct usb_request
*_req
)
2151 struct renesas_usb3_ep
*usb3_ep
= usb_ep_to_usb3_ep(_ep
);
2152 struct renesas_usb3_request
*usb3_req
= usb_req_to_usb3_req(_req
);
2153 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
2155 dev_dbg(usb3_to_dev(usb3
), "ep_dequeue: ep%2d, %u\n", usb3_ep
->num
,
2158 usb3_dma_try_stop(usb3_ep
, usb3_req
);
2159 usb3_request_done_pipen(usb3
, usb3_ep
, usb3_req
, -ECONNRESET
);
2164 static int renesas_usb3_ep_set_halt(struct usb_ep
*_ep
, int value
)
2166 return usb3_set_halt(usb_ep_to_usb3_ep(_ep
), !!value
, false);
2169 static int renesas_usb3_ep_set_wedge(struct usb_ep
*_ep
)
2171 struct renesas_usb3_ep
*usb3_ep
= usb_ep_to_usb3_ep(_ep
);
2173 usb3_ep
->wedge
= true;
2174 return usb3_set_halt(usb3_ep
, true, false);
2177 static void renesas_usb3_ep_fifo_flush(struct usb_ep
*_ep
)
2179 struct renesas_usb3_ep
*usb3_ep
= usb_ep_to_usb3_ep(_ep
);
2180 struct renesas_usb3
*usb3
= usb3_ep_to_usb3(usb3_ep
);
2181 unsigned long flags
;
2184 spin_lock_irqsave(&usb3
->lock
, flags
);
2185 if (!usb3_pn_change(usb3
, usb3_ep
->num
)) {
2186 usb3_pn_con_clear(usb3
);
2187 usb3_set_bit(usb3
, PN_CON_EN
, USB3_PN_CON
);
2189 spin_unlock_irqrestore(&usb3
->lock
, flags
);
2191 usb3_p0_con_clear_buffer(usb3
);
2195 static struct usb_ep_ops renesas_usb3_ep_ops
= {
2196 .enable
= renesas_usb3_ep_enable
,
2197 .disable
= renesas_usb3_ep_disable
,
2199 .alloc_request
= renesas_usb3_ep_alloc_request
,
2200 .free_request
= renesas_usb3_ep_free_request
,
2202 .queue
= renesas_usb3_ep_queue
,
2203 .dequeue
= renesas_usb3_ep_dequeue
,
2205 .set_halt
= renesas_usb3_ep_set_halt
,
2206 .set_wedge
= renesas_usb3_ep_set_wedge
,
2207 .fifo_flush
= renesas_usb3_ep_fifo_flush
,
2210 /*------- usb_gadget_ops -------------------------------------------------*/
2211 static int renesas_usb3_start(struct usb_gadget
*gadget
,
2212 struct usb_gadget_driver
*driver
)
2214 struct renesas_usb3
*usb3
;
2216 if (!driver
|| driver
->max_speed
< USB_SPEED_FULL
||
2220 usb3
= gadget_to_renesas_usb3(gadget
);
2222 /* hook up the driver */
2223 usb3
->driver
= driver
;
2225 pm_runtime_enable(usb3_to_dev(usb3
));
2226 pm_runtime_get_sync(usb3_to_dev(usb3
));
2228 renesas_usb3_init_controller(usb3
);
2233 static int renesas_usb3_stop(struct usb_gadget
*gadget
)
2235 struct renesas_usb3
*usb3
= gadget_to_renesas_usb3(gadget
);
2237 usb3
->softconnect
= false;
2238 usb3
->gadget
.speed
= USB_SPEED_UNKNOWN
;
2239 usb3
->driver
= NULL
;
2240 renesas_usb3_stop_controller(usb3
);
2242 pm_runtime_put(usb3_to_dev(usb3
));
2243 pm_runtime_disable(usb3_to_dev(usb3
));
2248 static int renesas_usb3_get_frame(struct usb_gadget
*_gadget
)
2253 static int renesas_usb3_pullup(struct usb_gadget
*gadget
, int is_on
)
2255 struct renesas_usb3
*usb3
= gadget_to_renesas_usb3(gadget
);
2257 usb3
->softconnect
= !!is_on
;
2262 static int renesas_usb3_set_selfpowered(struct usb_gadget
*gadget
, int is_self
)
2264 gadget
->is_selfpowered
= !!is_self
;
2269 static const struct usb_gadget_ops renesas_usb3_gadget_ops
= {
2270 .get_frame
= renesas_usb3_get_frame
,
2271 .udc_start
= renesas_usb3_start
,
2272 .udc_stop
= renesas_usb3_stop
,
2273 .pullup
= renesas_usb3_pullup
,
2274 .set_selfpowered
= renesas_usb3_set_selfpowered
,
2277 static ssize_t
role_store(struct device
*dev
, struct device_attribute
*attr
,
2278 const char *buf
, size_t count
)
2280 struct renesas_usb3
*usb3
= dev_get_drvdata(dev
);
2281 bool new_mode_is_host
;
2286 if (!strncmp(buf
, "host", strlen("host")))
2287 new_mode_is_host
= true;
2288 else if (!strncmp(buf
, "peripheral", strlen("peripheral")))
2289 new_mode_is_host
= false;
2293 if (new_mode_is_host
== usb3_is_host(usb3
))
2296 usb3_mode_config(usb3
, new_mode_is_host
, usb3_is_a_device(usb3
));
2301 static ssize_t
role_show(struct device
*dev
, struct device_attribute
*attr
,
2304 struct renesas_usb3
*usb3
= dev_get_drvdata(dev
);
2309 return sprintf(buf
, "%s\n", usb3_is_host(usb3
) ? "host" : "peripheral");
2311 static DEVICE_ATTR_RW(role
);
2313 /*------- platform_driver ------------------------------------------------*/
2314 static int renesas_usb3_remove(struct platform_device
*pdev
)
2316 struct renesas_usb3
*usb3
= platform_get_drvdata(pdev
);
2318 device_remove_file(&pdev
->dev
, &dev_attr_role
);
2320 usb_del_gadget_udc(&usb3
->gadget
);
2321 renesas_usb3_dma_free_prd(usb3
, &pdev
->dev
);
2323 __renesas_usb3_ep_free_request(usb3
->ep0_req
);
2328 static int renesas_usb3_init_ep(struct renesas_usb3
*usb3
, struct device
*dev
,
2329 const struct renesas_usb3_priv
*priv
)
2331 struct renesas_usb3_ep
*usb3_ep
;
2334 /* calculate num_usb3_eps from renesas_usb3_priv */
2335 usb3
->num_usb3_eps
= priv
->ramsize_per_ramif
* priv
->num_ramif
* 2 /
2336 priv
->ramsize_per_pipe
+ 1;
2338 if (usb3
->num_usb3_eps
> USB3_MAX_NUM_PIPES
)
2339 usb3
->num_usb3_eps
= USB3_MAX_NUM_PIPES
;
2341 usb3
->usb3_ep
= devm_kzalloc(dev
, sizeof(*usb3_ep
) * usb3
->num_usb3_eps
,
2346 dev_dbg(dev
, "%s: num_usb3_eps = %d\n", __func__
, usb3
->num_usb3_eps
);
2348 * This driver prepares pipes as follows:
2349 * - odd pipes = IN pipe
2350 * - even pipes = OUT pipe (except pipe 0)
2352 usb3_for_each_ep(usb3_ep
, usb3
, i
) {
2353 snprintf(usb3_ep
->ep_name
, sizeof(usb3_ep
->ep_name
), "ep%d", i
);
2354 usb3_ep
->usb3
= usb3
;
2356 usb3_ep
->ep
.name
= usb3_ep
->ep_name
;
2357 usb3_ep
->ep
.ops
= &renesas_usb3_ep_ops
;
2358 INIT_LIST_HEAD(&usb3_ep
->queue
);
2359 INIT_LIST_HEAD(&usb3_ep
->ep
.ep_list
);
2361 /* for control pipe */
2362 usb3
->gadget
.ep0
= &usb3_ep
->ep
;
2363 usb_ep_set_maxpacket_limit(&usb3_ep
->ep
,
2364 USB3_EP0_HSFS_MAX_PACKET_SIZE
);
2365 usb3_ep
->ep
.caps
.type_control
= true;
2366 usb3_ep
->ep
.caps
.dir_in
= true;
2367 usb3_ep
->ep
.caps
.dir_out
= true;
2371 /* for bulk or interrupt pipe */
2372 usb_ep_set_maxpacket_limit(&usb3_ep
->ep
, ~0);
2373 list_add_tail(&usb3_ep
->ep
.ep_list
, &usb3
->gadget
.ep_list
);
2374 usb3_ep
->ep
.caps
.type_bulk
= true;
2375 usb3_ep
->ep
.caps
.type_int
= true;
2377 usb3_ep
->ep
.caps
.dir_in
= true;
2379 usb3_ep
->ep
.caps
.dir_out
= true;
2385 static void renesas_usb3_init_ram(struct renesas_usb3
*usb3
, struct device
*dev
,
2386 const struct renesas_usb3_priv
*priv
)
2388 struct renesas_usb3_ep
*usb3_ep
;
2390 u32 ramif
[2], basead
[2]; /* index 0 = for IN pipes */
2391 u32
*cur_ramif
, *cur_basead
;
2394 memset(ramif
, 0, sizeof(ramif
));
2395 memset(basead
, 0, sizeof(basead
));
2398 * This driver prepares pipes as follows:
2399 * - all pipes = the same size as "ramsize_per_pipe"
2400 * Please refer to the "Method of Specifying RAM Mapping"
2402 usb3_for_each_ep(usb3_ep
, usb3
, i
) {
2404 continue; /* out of scope if ep num = 0 */
2405 if (usb3_ep
->ep
.caps
.dir_in
) {
2406 cur_ramif
= &ramif
[0];
2407 cur_basead
= &basead
[0];
2409 cur_ramif
= &ramif
[1];
2410 cur_basead
= &basead
[1];
2413 if (*cur_basead
> priv
->ramsize_per_ramif
)
2414 continue; /* out of memory for IN or OUT pipe */
2416 /* calculate rammap_val */
2417 val
= PN_RAMMAP_RAMIF(*cur_ramif
);
2418 val
|= usb3_calc_ramarea(priv
->ramsize_per_pipe
);
2419 val
|= PN_RAMMAP_BASEAD(*cur_basead
);
2420 usb3_ep
->rammap_val
= val
;
2422 dev_dbg(dev
, "ep%2d: val = %08x, ramif = %d, base = %x\n",
2423 i
, val
, *cur_ramif
, *cur_basead
);
2425 /* update current ramif */
2426 if (*cur_ramif
+ 1 == priv
->num_ramif
) {
2428 *cur_basead
+= priv
->ramsize_per_pipe
;
2435 static const struct renesas_usb3_priv renesas_usb3_priv_r8a7795
= {
2436 .ramsize_per_ramif
= SZ_16K
,
2438 .ramsize_per_pipe
= SZ_4K
,
2439 .workaround_for_vbus
= true,
2442 static const struct of_device_id usb3_of_match
[] = {
2444 .compatible
= "renesas,r8a7795-usb3-peri",
2445 .data
= &renesas_usb3_priv_r8a7795
,
2449 MODULE_DEVICE_TABLE(of
, usb3_of_match
);
2451 static const unsigned int renesas_usb3_cable
[] = {
2457 static int renesas_usb3_probe(struct platform_device
*pdev
)
2459 struct renesas_usb3
*usb3
;
2460 struct resource
*res
;
2461 const struct of_device_id
*match
;
2463 const struct renesas_usb3_priv
*priv
;
2465 match
= of_match_node(usb3_of_match
, pdev
->dev
.of_node
);
2470 irq
= platform_get_irq(pdev
, 0);
2474 usb3
= devm_kzalloc(&pdev
->dev
, sizeof(*usb3
), GFP_KERNEL
);
2478 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2479 usb3
->reg
= devm_ioremap_resource(&pdev
->dev
, res
);
2480 if (IS_ERR(usb3
->reg
))
2481 return PTR_ERR(usb3
->reg
);
2483 platform_set_drvdata(pdev
, usb3
);
2484 spin_lock_init(&usb3
->lock
);
2486 usb3
->gadget
.ops
= &renesas_usb3_gadget_ops
;
2487 usb3
->gadget
.name
= udc_name
;
2488 usb3
->gadget
.max_speed
= USB_SPEED_SUPER
;
2489 INIT_LIST_HEAD(&usb3
->gadget
.ep_list
);
2490 ret
= renesas_usb3_init_ep(usb3
, &pdev
->dev
, priv
);
2493 renesas_usb3_init_ram(usb3
, &pdev
->dev
, priv
);
2495 ret
= devm_request_irq(&pdev
->dev
, irq
, renesas_usb3_irq
, 0,
2496 dev_name(&pdev
->dev
), usb3
);
2500 INIT_WORK(&usb3
->extcon_work
, renesas_usb3_extcon_work
);
2501 usb3
->extcon
= devm_extcon_dev_allocate(&pdev
->dev
, renesas_usb3_cable
);
2502 if (IS_ERR(usb3
->extcon
))
2503 return PTR_ERR(usb3
->extcon
);
2505 ret
= devm_extcon_dev_register(&pdev
->dev
, usb3
->extcon
);
2507 dev_err(&pdev
->dev
, "Failed to register extcon\n");
2511 /* for ep0 handling */
2512 usb3
->ep0_req
= __renesas_usb3_ep_alloc_request(GFP_KERNEL
);
2516 ret
= renesas_usb3_dma_alloc_prd(usb3
, &pdev
->dev
);
2520 ret
= usb_add_gadget_udc(&pdev
->dev
, &usb3
->gadget
);
2524 ret
= device_create_file(&pdev
->dev
, &dev_attr_role
);
2526 goto err_dev_create
;
2528 usb3
->workaround_for_vbus
= priv
->workaround_for_vbus
;
2530 dev_info(&pdev
->dev
, "probed\n");
2535 usb_del_gadget_udc(&usb3
->gadget
);
2538 renesas_usb3_dma_free_prd(usb3
, &pdev
->dev
);
2541 __renesas_usb3_ep_free_request(usb3
->ep0_req
);
2546 static struct platform_driver renesas_usb3_driver
= {
2547 .probe
= renesas_usb3_probe
,
2548 .remove
= renesas_usb3_remove
,
2550 .name
= (char *)udc_name
,
2551 .of_match_table
= of_match_ptr(usb3_of_match
),
2554 module_platform_driver(renesas_usb3_driver
);
2556 MODULE_DESCRIPTION("Renesas USB3.0 Peripheral driver");
2557 MODULE_LICENSE("GPL v2");
2558 MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>");
2559 MODULE_ALIAS("platform:renesas_usb3");