1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Renesas USB3.0 Peripheral driver (USB gadget) |
4 | * |
5 | * Copyright (C) 2015-2017 Renesas Electronics Corporation |
6 | */ |
7 | |
8 | #include <linux/debugfs.h> |
9 | #include <linux/delay.h> |
10 | #include <linux/device.h> |
11 | #include <linux/dma-mapping.h> |
12 | #include <linux/err.h> |
13 | #include <linux/extcon-provider.h> |
14 | #include <linux/interrupt.h> |
15 | #include <linux/io.h> |
16 | #include <linux/module.h> |
17 | #include <linux/of.h> |
18 | #include <linux/phy/phy.h> |
19 | #include <linux/platform_device.h> |
20 | #include <linux/pm_runtime.h> |
21 | #include <linux/reset.h> |
22 | #include <linux/sizes.h> |
23 | #include <linux/slab.h> |
24 | #include <linux/string.h> |
25 | #include <linux/uaccess.h> |
26 | #include <linux/usb/ch9.h> |
27 | #include <linux/usb/gadget.h> |
28 | #include <linux/usb/of.h> |
29 | #include <linux/usb/role.h> |
30 | #include <linux/usb/rzv2m_usb3drd.h> |
31 | |
32 | /* register definitions */ |
33 | #define USB3_AXI_INT_STA 0x008 |
34 | #define USB3_AXI_INT_ENA 0x00c |
35 | #define USB3_DMA_INT_STA 0x010 |
36 | #define USB3_DMA_INT_ENA 0x014 |
37 | #define USB3_DMA_CH0_CON(n) (0x030 + ((n) - 1) * 0x10) /* n = 1 to 4 */ |
38 | #define USB3_DMA_CH0_PRD_ADR(n) (0x034 + ((n) - 1) * 0x10) /* n = 1 to 4 */ |
39 | #define USB3_USB_COM_CON 0x200 |
40 | #define USB3_USB20_CON 0x204 |
41 | #define USB3_USB30_CON 0x208 |
42 | #define USB3_USB_STA 0x210 |
43 | #define USB3_DRD_CON(p) ((p)->is_rzv2m ? 0x400 : 0x218) |
44 | #define USB3_USB_INT_STA_1 0x220 |
45 | #define USB3_USB_INT_STA_2 0x224 |
46 | #define USB3_USB_INT_ENA_1 0x228 |
47 | #define USB3_USB_INT_ENA_2 0x22c |
48 | #define USB3_STUP_DAT_0 0x230 |
49 | #define USB3_STUP_DAT_1 0x234 |
50 | #define USB3_USB_OTG_STA(p) ((p)->is_rzv2m ? 0x410 : 0x268) |
51 | #define USB3_USB_OTG_INT_STA(p) ((p)->is_rzv2m ? 0x414 : 0x26c) |
52 | #define USB3_USB_OTG_INT_ENA(p) ((p)->is_rzv2m ? 0x418 : 0x270) |
53 | #define USB3_P0_MOD 0x280 |
54 | #define USB3_P0_CON 0x288 |
55 | #define USB3_P0_STA 0x28c |
56 | #define USB3_P0_INT_STA 0x290 |
57 | #define USB3_P0_INT_ENA 0x294 |
58 | #define USB3_P0_LNG 0x2a0 |
59 | #define USB3_P0_READ 0x2a4 |
60 | #define USB3_P0_WRITE 0x2a8 |
61 | #define USB3_PIPE_COM 0x2b0 |
62 | #define USB3_PN_MOD 0x2c0 |
63 | #define USB3_PN_RAMMAP 0x2c4 |
64 | #define USB3_PN_CON 0x2c8 |
65 | #define USB3_PN_STA 0x2cc |
66 | #define USB3_PN_INT_STA 0x2d0 |
67 | #define USB3_PN_INT_ENA 0x2d4 |
68 | #define USB3_PN_LNG 0x2e0 |
69 | #define USB3_PN_READ 0x2e4 |
70 | #define USB3_PN_WRITE 0x2e8 |
71 | #define USB3_SSIFCMD 0x340 |
72 | |
73 | /* AXI_INT_ENA and AXI_INT_STA */ |
74 | #define AXI_INT_DMAINT BIT(31) |
75 | #define AXI_INT_EPCINT BIT(30) |
76 | /* PRD's n = from 1 to 4 */ |
77 | #define AXI_INT_PRDEN_CLR_STA_SHIFT(n) (16 + (n) - 1) |
78 | #define AXI_INT_PRDERR_STA_SHIFT(n) (0 + (n) - 1) |
79 | #define AXI_INT_PRDEN_CLR_STA(n) (1 << AXI_INT_PRDEN_CLR_STA_SHIFT(n)) |
80 | #define AXI_INT_PRDERR_STA(n) (1 << AXI_INT_PRDERR_STA_SHIFT(n)) |
81 | |
82 | /* DMA_INT_ENA and DMA_INT_STA */ |
83 | #define DMA_INT(n) BIT(n) |
84 | |
85 | /* DMA_CH0_CONn */ |
86 | #define DMA_CON_PIPE_DIR BIT(15) /* 1: In Transfer */ |
87 | #define DMA_CON_PIPE_NO_SHIFT 8 |
88 | #define DMA_CON_PIPE_NO_MASK GENMASK(12, DMA_CON_PIPE_NO_SHIFT) |
89 | #define DMA_COM_PIPE_NO(n) (((n) << DMA_CON_PIPE_NO_SHIFT) & \ |
90 | DMA_CON_PIPE_NO_MASK) |
91 | #define DMA_CON_PRD_EN BIT(0) |
92 | |
93 | /* LCLKSEL */ |
94 | #define LCLKSEL_LSEL BIT(18) |
95 | |
96 | /* USB_COM_CON */ |
97 | #define USB_COM_CON_CONF BIT(24) |
98 | #define USB_COM_CON_PN_WDATAIF_NL BIT(23) |
99 | #define USB_COM_CON_PN_RDATAIF_NL BIT(22) |
100 | #define USB_COM_CON_PN_LSTTR_PP BIT(21) |
101 | #define USB_COM_CON_SPD_MODE BIT(17) |
102 | #define USB_COM_CON_EP0_EN BIT(16) |
103 | #define USB_COM_CON_DEV_ADDR_SHIFT 8 |
104 | #define USB_COM_CON_DEV_ADDR_MASK GENMASK(14, USB_COM_CON_DEV_ADDR_SHIFT) |
105 | #define USB_COM_CON_DEV_ADDR(n) (((n) << USB_COM_CON_DEV_ADDR_SHIFT) & \ |
106 | USB_COM_CON_DEV_ADDR_MASK) |
107 | #define USB_COM_CON_RX_DETECTION BIT(1) |
108 | #define USB_COM_CON_PIPE_CLR BIT(0) |
109 | |
110 | /* USB20_CON */ |
111 | #define USB20_CON_B2_PUE BIT(31) |
112 | #define USB20_CON_B2_SUSPEND BIT(24) |
113 | #define USB20_CON_B2_CONNECT BIT(17) |
114 | #define USB20_CON_B2_TSTMOD_SHIFT 8 |
115 | #define USB20_CON_B2_TSTMOD_MASK GENMASK(10, USB20_CON_B2_TSTMOD_SHIFT) |
116 | #define USB20_CON_B2_TSTMOD(n) (((n) << USB20_CON_B2_TSTMOD_SHIFT) & \ |
117 | USB20_CON_B2_TSTMOD_MASK) |
118 | #define USB20_CON_B2_TSTMOD_EN BIT(0) |
119 | |
120 | /* USB30_CON */ |
121 | #define USB30_CON_POW_SEL_SHIFT 24 |
122 | #define USB30_CON_POW_SEL_MASK GENMASK(26, USB30_CON_POW_SEL_SHIFT) |
123 | #define USB30_CON_POW_SEL_IN_U3 BIT(26) |
124 | #define USB30_CON_POW_SEL_IN_DISCON 0 |
125 | #define USB30_CON_POW_SEL_P2_TO_P0 BIT(25) |
126 | #define USB30_CON_POW_SEL_P0_TO_P3 BIT(24) |
127 | #define USB30_CON_POW_SEL_P0_TO_P2 0 |
128 | #define USB30_CON_B3_PLLWAKE BIT(23) |
129 | #define USB30_CON_B3_CONNECT BIT(17) |
130 | #define USB30_CON_B3_HOTRST_CMP BIT(1) |
131 | |
132 | /* USB_STA */ |
133 | #define USB_STA_SPEED_MASK (BIT(2) | BIT(1)) |
134 | #define USB_STA_SPEED_HS BIT(2) |
135 | #define USB_STA_SPEED_FS BIT(1) |
136 | #define USB_STA_SPEED_SS 0 |
137 | #define USB_STA_VBUS_STA BIT(0) |
138 | |
139 | /* DRD_CON */ |
140 | #define DRD_CON_PERI_RST BIT(31) /* rzv2m only */ |
141 | #define DRD_CON_HOST_RST BIT(30) /* rzv2m only */ |
142 | #define DRD_CON_PERI_CON BIT(24) |
143 | #define DRD_CON_VBOUT BIT(0) |
144 | |
145 | /* USB_INT_ENA_1 and USB_INT_STA_1 */ |
146 | #define USB_INT_1_B3_PLLWKUP BIT(31) |
147 | #define USB_INT_1_B3_LUPSUCS BIT(30) |
148 | #define USB_INT_1_B3_DISABLE BIT(27) |
149 | #define USB_INT_1_B3_WRMRST BIT(21) |
150 | #define USB_INT_1_B3_HOTRST BIT(20) |
151 | #define USB_INT_1_B2_USBRST BIT(12) |
152 | #define USB_INT_1_B2_L1SPND BIT(11) |
153 | #define USB_INT_1_B2_SPND BIT(9) |
154 | #define USB_INT_1_B2_RSUM BIT(8) |
155 | #define USB_INT_1_SPEED BIT(1) |
156 | #define USB_INT_1_VBUS_CNG BIT(0) |
157 | |
158 | /* USB_INT_ENA_2 and USB_INT_STA_2 */ |
159 | #define USB_INT_2_PIPE(n) BIT(n) |
160 | |
161 | /* USB_OTG_STA, USB_OTG_INT_STA and USB_OTG_INT_ENA */ |
162 | #define USB_OTG_IDMON(p) ((p)->is_rzv2m ? BIT(0) : BIT(4)) |
163 | |
164 | /* P0_MOD */ |
165 | #define P0_MOD_DIR BIT(6) |
166 | |
167 | /* P0_CON and PN_CON */ |
168 | #define PX_CON_BYTE_EN_MASK (BIT(10) | BIT(9)) |
169 | #define PX_CON_BYTE_EN_SHIFT 9 |
170 | #define PX_CON_BYTE_EN_BYTES(n) (((n) << PX_CON_BYTE_EN_SHIFT) & \ |
171 | PX_CON_BYTE_EN_MASK) |
172 | #define PX_CON_SEND BIT(8) |
173 | |
174 | /* P0_CON */ |
175 | #define P0_CON_ST_RES_MASK (BIT(27) | BIT(26)) |
176 | #define P0_CON_ST_RES_FORCE_STALL BIT(27) |
177 | #define P0_CON_ST_RES_NORMAL BIT(26) |
178 | #define P0_CON_ST_RES_FORCE_NRDY 0 |
179 | #define P0_CON_OT_RES_MASK (BIT(25) | BIT(24)) |
180 | #define P0_CON_OT_RES_FORCE_STALL BIT(25) |
181 | #define P0_CON_OT_RES_NORMAL BIT(24) |
182 | #define P0_CON_OT_RES_FORCE_NRDY 0 |
183 | #define P0_CON_IN_RES_MASK (BIT(17) | BIT(16)) |
184 | #define P0_CON_IN_RES_FORCE_STALL BIT(17) |
185 | #define P0_CON_IN_RES_NORMAL BIT(16) |
186 | #define P0_CON_IN_RES_FORCE_NRDY 0 |
187 | #define P0_CON_RES_WEN BIT(7) |
188 | #define P0_CON_BCLR BIT(1) |
189 | |
190 | /* P0_STA and PN_STA */ |
191 | #define PX_STA_BUFSTS BIT(0) |
192 | |
193 | /* P0_INT_ENA and P0_INT_STA */ |
194 | #define P0_INT_STSED BIT(18) |
195 | #define P0_INT_STSST BIT(17) |
196 | #define P0_INT_SETUP BIT(16) |
197 | #define P0_INT_RCVNL BIT(8) |
198 | #define P0_INT_ERDY BIT(7) |
199 | #define P0_INT_FLOW BIT(6) |
200 | #define P0_INT_STALL BIT(2) |
201 | #define P0_INT_NRDY BIT(1) |
202 | #define P0_INT_BFRDY BIT(0) |
203 | #define P0_INT_ALL_BITS (P0_INT_STSED | P0_INT_SETUP | P0_INT_BFRDY) |
204 | |
205 | /* PN_MOD */ |
206 | #define PN_MOD_DIR BIT(6) |
207 | #define PN_MOD_TYPE_SHIFT 4 |
208 | #define PN_MOD_TYPE_MASK GENMASK(5, PN_MOD_TYPE_SHIFT) |
209 | #define PN_MOD_TYPE(n) (((n) << PN_MOD_TYPE_SHIFT) & \ |
210 | PN_MOD_TYPE_MASK) |
211 | #define PN_MOD_EPNUM_MASK GENMASK(3, 0) |
212 | #define PN_MOD_EPNUM(n) ((n) & PN_MOD_EPNUM_MASK) |
213 | |
214 | /* PN_RAMMAP */ |
215 | #define PN_RAMMAP_RAMAREA_SHIFT 29 |
216 | #define PN_RAMMAP_RAMAREA_MASK GENMASK(31, PN_RAMMAP_RAMAREA_SHIFT) |
217 | #define PN_RAMMAP_RAMAREA_16KB BIT(31) |
218 | #define PN_RAMMAP_RAMAREA_8KB (BIT(30) | BIT(29)) |
219 | #define PN_RAMMAP_RAMAREA_4KB BIT(30) |
220 | #define PN_RAMMAP_RAMAREA_2KB BIT(29) |
221 | #define PN_RAMMAP_RAMAREA_1KB 0 |
222 | #define PN_RAMMAP_MPKT_SHIFT 16 |
223 | #define PN_RAMMAP_MPKT_MASK GENMASK(26, PN_RAMMAP_MPKT_SHIFT) |
224 | #define PN_RAMMAP_MPKT(n) (((n) << PN_RAMMAP_MPKT_SHIFT) & \ |
225 | PN_RAMMAP_MPKT_MASK) |
226 | #define PN_RAMMAP_RAMIF_SHIFT 14 |
227 | #define PN_RAMMAP_RAMIF_MASK GENMASK(15, PN_RAMMAP_RAMIF_SHIFT) |
228 | #define PN_RAMMAP_RAMIF(n) (((n) << PN_RAMMAP_RAMIF_SHIFT) & \ |
229 | PN_RAMMAP_RAMIF_MASK) |
230 | #define PN_RAMMAP_BASEAD_MASK GENMASK(13, 0) |
231 | #define PN_RAMMAP_BASEAD(offs) (((offs) >> 3) & PN_RAMMAP_BASEAD_MASK) |
232 | #define PN_RAMMAP_DATA(area, ramif, basead) ((PN_RAMMAP_##area) | \ |
233 | (PN_RAMMAP_RAMIF(ramif)) | \ |
234 | (PN_RAMMAP_BASEAD(basead))) |
235 | |
236 | /* PN_CON */ |
237 | #define PN_CON_EN BIT(31) |
238 | #define PN_CON_DATAIF_EN BIT(30) |
239 | #define PN_CON_RES_MASK (BIT(17) | BIT(16)) |
240 | #define PN_CON_RES_FORCE_STALL BIT(17) |
241 | #define PN_CON_RES_NORMAL BIT(16) |
242 | #define PN_CON_RES_FORCE_NRDY 0 |
243 | #define PN_CON_LAST BIT(11) |
244 | #define PN_CON_RES_WEN BIT(7) |
245 | #define PN_CON_CLR BIT(0) |
246 | |
247 | /* PN_INT_STA and PN_INT_ENA */ |
248 | #define PN_INT_LSTTR BIT(4) |
249 | #define PN_INT_BFRDY BIT(0) |
250 | |
251 | /* USB3_SSIFCMD */ |
252 | #define SSIFCMD_URES_U2 BIT(9) |
253 | #define SSIFCMD_URES_U1 BIT(8) |
254 | #define SSIFCMD_UDIR_U2 BIT(7) |
255 | #define SSIFCMD_UDIR_U1 BIT(6) |
256 | #define SSIFCMD_UREQ_U2 BIT(5) |
257 | #define SSIFCMD_UREQ_U1 BIT(4) |
258 | |
259 | #define USB3_EP0_SS_MAX_PACKET_SIZE 512 |
260 | #define USB3_EP0_HSFS_MAX_PACKET_SIZE 64 |
261 | #define USB3_EP0_BUF_SIZE 8 |
262 | #define USB3_MAX_NUM_PIPES(p) ((p)->is_rzv2m ? 16 : 6) /* This includes PIPE 0 */ |
263 | #define USB3_WAIT_US 3 |
264 | #define USB3_DMA_NUM_SETTING_AREA 4 |
265 | /* |
266 | * To avoid double-meaning of "0" (xferred 65536 bytes or received zlp if |
267 | * buffer size is 65536), this driver uses the maximum size per a entry is |
268 | * 32768 bytes. |
269 | */ |
270 | #define USB3_DMA_MAX_XFER_SIZE 32768 |
271 | #define USB3_DMA_PRD_SIZE 4096 |
272 | |
273 | struct renesas_usb3; |
274 | |
275 | /* Physical Region Descriptor Table */ |
276 | struct renesas_usb3_prd { |
277 | u32 word1; |
278 | #define USB3_PRD1_E BIT(30) /* the end of chain */ |
279 | #define USB3_PRD1_U BIT(29) /* completion of transfer */ |
280 | #define USB3_PRD1_D BIT(28) /* Error occurred */ |
281 | #define USB3_PRD1_INT BIT(27) /* Interrupt occurred */ |
282 | #define USB3_PRD1_LST BIT(26) /* Last Packet */ |
283 | #define USB3_PRD1_B_INC BIT(24) |
284 | #define USB3_PRD1_MPS_8 0 |
285 | #define USB3_PRD1_MPS_16 BIT(21) |
286 | #define USB3_PRD1_MPS_32 BIT(22) |
287 | #define USB3_PRD1_MPS_64 (BIT(22) | BIT(21)) |
288 | #define USB3_PRD1_MPS_512 BIT(23) |
289 | #define USB3_PRD1_MPS_1024 (BIT(23) | BIT(21)) |
290 | #define USB3_PRD1_MPS_RESERVED (BIT(23) | BIT(22) | BIT(21)) |
291 | #define USB3_PRD1_SIZE_MASK GENMASK(15, 0) |
292 | |
293 | u32 bap; |
294 | }; |
295 | #define USB3_DMA_NUM_PRD_ENTRIES (USB3_DMA_PRD_SIZE / \ |
296 | sizeof(struct renesas_usb3_prd)) |
297 | #define USB3_DMA_MAX_XFER_SIZE_ALL_PRDS (USB3_DMA_PRD_SIZE / \ |
298 | sizeof(struct renesas_usb3_prd) * \ |
299 | USB3_DMA_MAX_XFER_SIZE) |
300 | |
301 | struct renesas_usb3_dma { |
302 | struct renesas_usb3_prd *prd; |
303 | dma_addr_t prd_dma; |
304 | int num; /* Setting area number (from 1 to 4) */ |
305 | bool used; |
306 | }; |
307 | |
308 | struct renesas_usb3_request { |
309 | struct usb_request req; |
310 | struct list_head queue; |
311 | }; |
312 | |
313 | #define USB3_EP_NAME_SIZE 8 |
314 | struct renesas_usb3_ep { |
315 | struct usb_ep ep; |
316 | struct renesas_usb3 *usb3; |
317 | struct renesas_usb3_dma *dma; |
318 | int num; |
319 | char ep_name[USB3_EP_NAME_SIZE]; |
320 | struct list_head queue; |
321 | u32 rammap_val; |
322 | bool dir_in; |
323 | bool halt; |
324 | bool wedge; |
325 | bool started; |
326 | }; |
327 | |
328 | struct renesas_usb3_priv { |
329 | int ramsize_per_ramif; /* unit = bytes */ |
330 | int num_ramif; |
331 | int ramsize_per_pipe; /* unit = bytes */ |
332 | bool workaround_for_vbus; /* if true, don't check vbus signal */ |
333 | bool is_rzv2m; /* if true, RZ/V2M SoC */ |
334 | }; |
335 | |
336 | struct renesas_usb3 { |
337 | void __iomem *reg; |
338 | void __iomem *drd_reg; |
339 | struct reset_control *usbp_rstc; |
340 | |
341 | struct usb_gadget gadget; |
342 | struct usb_gadget_driver *driver; |
343 | struct extcon_dev *extcon; |
344 | struct work_struct extcon_work; |
345 | struct phy *phy; |
346 | struct dentry *dentry; |
347 | |
348 | struct usb_role_switch *role_sw; |
349 | struct device *host_dev; |
350 | struct work_struct role_work; |
351 | enum usb_role role; |
352 | |
353 | struct renesas_usb3_ep *usb3_ep; |
354 | int num_usb3_eps; |
355 | |
356 | struct renesas_usb3_dma dma[USB3_DMA_NUM_SETTING_AREA]; |
357 | |
358 | spinlock_t lock; |
359 | int disabled_count; |
360 | |
361 | struct usb_request *ep0_req; |
362 | |
363 | enum usb_role connection_state; |
364 | u16 test_mode; |
365 | u8 ep0_buf[USB3_EP0_BUF_SIZE]; |
366 | bool softconnect; |
367 | bool workaround_for_vbus; |
368 | bool extcon_host; /* check id and set EXTCON_USB_HOST */ |
369 | bool extcon_usb; /* check vbus and set EXTCON_USB */ |
370 | bool forced_b_device; |
371 | bool start_to_connect; |
372 | bool role_sw_by_connector; |
373 | bool is_rzv2m; |
374 | }; |
375 | |
376 | #define gadget_to_renesas_usb3(_gadget) \ |
377 | container_of(_gadget, struct renesas_usb3, gadget) |
378 | #define renesas_usb3_to_gadget(renesas_usb3) (&renesas_usb3->gadget) |
379 | #define usb3_to_dev(_usb3) (_usb3->gadget.dev.parent) |
380 | |
381 | #define usb_ep_to_usb3_ep(_ep) container_of(_ep, struct renesas_usb3_ep, ep) |
382 | #define usb3_ep_to_usb3(_usb3_ep) (_usb3_ep->usb3) |
383 | #define usb_req_to_usb3_req(_req) container_of(_req, \ |
384 | struct renesas_usb3_request, req) |
385 | |
386 | #define usb3_get_ep(usb3, n) ((usb3)->usb3_ep + (n)) |
387 | #define usb3_for_each_ep(usb3_ep, usb3, i) \ |
388 | for ((i) = 0, usb3_ep = usb3_get_ep(usb3, (i)); \ |
389 | (i) < (usb3)->num_usb3_eps; \ |
390 | (i)++, usb3_ep = usb3_get_ep(usb3, (i))) |
391 | |
392 | #define usb3_get_dma(usb3, i) (&(usb3)->dma[i]) |
393 | #define usb3_for_each_dma(usb3, dma, i) \ |
394 | for ((i) = 0, dma = usb3_get_dma((usb3), (i)); \ |
395 | (i) < USB3_DMA_NUM_SETTING_AREA; \ |
396 | (i)++, dma = usb3_get_dma((usb3), (i))) |
397 | |
398 | static const char udc_name[] = "renesas_usb3" ; |
399 | |
400 | static bool use_dma = 1; |
401 | module_param(use_dma, bool, 0644); |
402 | MODULE_PARM_DESC(use_dma, "use dedicated DMAC" ); |
403 | |
404 | static void usb3_write(struct renesas_usb3 *usb3, u32 data, u32 offs) |
405 | { |
406 | iowrite32(data, usb3->reg + offs); |
407 | } |
408 | |
409 | static u32 usb3_read(struct renesas_usb3 *usb3, u32 offs) |
410 | { |
411 | return ioread32(usb3->reg + offs); |
412 | } |
413 | |
414 | static void usb3_set_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs) |
415 | { |
416 | u32 val = usb3_read(usb3, offs); |
417 | |
418 | val |= bits; |
419 | usb3_write(usb3, data: val, offs); |
420 | } |
421 | |
422 | static void usb3_clear_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs) |
423 | { |
424 | u32 val = usb3_read(usb3, offs); |
425 | |
426 | val &= ~bits; |
427 | usb3_write(usb3, data: val, offs); |
428 | } |
429 | |
430 | static void usb3_drd_write(struct renesas_usb3 *usb3, u32 data, u32 offs) |
431 | { |
432 | void __iomem *reg; |
433 | |
434 | if (usb3->is_rzv2m) |
435 | reg = usb3->drd_reg + offs - USB3_DRD_CON(usb3); |
436 | else |
437 | reg = usb3->reg + offs; |
438 | |
439 | iowrite32(data, reg); |
440 | } |
441 | |
442 | static u32 usb3_drd_read(struct renesas_usb3 *usb3, u32 offs) |
443 | { |
444 | void __iomem *reg; |
445 | |
446 | if (usb3->is_rzv2m) |
447 | reg = usb3->drd_reg + offs - USB3_DRD_CON(usb3); |
448 | else |
449 | reg = usb3->reg + offs; |
450 | |
451 | return ioread32(reg); |
452 | } |
453 | |
454 | static void usb3_drd_set_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs) |
455 | { |
456 | u32 val = usb3_drd_read(usb3, offs); |
457 | |
458 | val |= bits; |
459 | usb3_drd_write(usb3, data: val, offs); |
460 | } |
461 | |
462 | static void usb3_drd_clear_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs) |
463 | { |
464 | u32 val = usb3_drd_read(usb3, offs); |
465 | |
466 | val &= ~bits; |
467 | usb3_drd_write(usb3, data: val, offs); |
468 | } |
469 | |
470 | static int usb3_wait(struct renesas_usb3 *usb3, u32 reg, u32 mask, |
471 | u32 expected) |
472 | { |
473 | int i; |
474 | |
475 | for (i = 0; i < USB3_WAIT_US; i++) { |
476 | if ((usb3_read(usb3, offs: reg) & mask) == expected) |
477 | return 0; |
478 | udelay(1); |
479 | } |
480 | |
481 | dev_dbg(usb3_to_dev(usb3), "%s: timed out (%8x, %08x, %08x)\n" , |
482 | __func__, reg, mask, expected); |
483 | |
484 | return -EBUSY; |
485 | } |
486 | |
487 | static void renesas_usb3_extcon_work(struct work_struct *work) |
488 | { |
489 | struct renesas_usb3 *usb3 = container_of(work, struct renesas_usb3, |
490 | extcon_work); |
491 | |
492 | extcon_set_state_sync(edev: usb3->extcon, EXTCON_USB_HOST, state: usb3->extcon_host); |
493 | extcon_set_state_sync(edev: usb3->extcon, EXTCON_USB, state: usb3->extcon_usb); |
494 | } |
495 | |
496 | static void usb3_enable_irq_1(struct renesas_usb3 *usb3, u32 bits) |
497 | { |
498 | usb3_set_bit(usb3, bits, USB3_USB_INT_ENA_1); |
499 | } |
500 | |
501 | static void usb3_disable_irq_1(struct renesas_usb3 *usb3, u32 bits) |
502 | { |
503 | usb3_clear_bit(usb3, bits, USB3_USB_INT_ENA_1); |
504 | } |
505 | |
506 | static void usb3_enable_pipe_irq(struct renesas_usb3 *usb3, int num) |
507 | { |
508 | usb3_set_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2); |
509 | } |
510 | |
511 | static void usb3_disable_pipe_irq(struct renesas_usb3 *usb3, int num) |
512 | { |
513 | usb3_clear_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2); |
514 | } |
515 | |
516 | static bool usb3_is_host(struct renesas_usb3 *usb3) |
517 | { |
518 | return !(usb3_drd_read(usb3, USB3_DRD_CON(usb3)) & DRD_CON_PERI_CON); |
519 | } |
520 | |
521 | static void usb3_init_axi_bridge(struct renesas_usb3 *usb3) |
522 | { |
523 | /* Set AXI_INT */ |
524 | usb3_write(usb3, data: ~0, USB3_DMA_INT_STA); |
525 | usb3_write(usb3, data: 0, USB3_DMA_INT_ENA); |
526 | usb3_set_bit(usb3, AXI_INT_DMAINT | AXI_INT_EPCINT, USB3_AXI_INT_ENA); |
527 | } |
528 | |
529 | static void usb3_init_epc_registers(struct renesas_usb3 *usb3) |
530 | { |
531 | usb3_write(usb3, data: ~0, USB3_USB_INT_STA_1); |
532 | if (!usb3->workaround_for_vbus) |
533 | usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG); |
534 | } |
535 | |
536 | static bool usb3_wakeup_usb2_phy(struct renesas_usb3 *usb3) |
537 | { |
538 | if (!(usb3_read(usb3, USB3_USB20_CON) & USB20_CON_B2_SUSPEND)) |
539 | return true; /* already waked it up */ |
540 | |
541 | usb3_clear_bit(usb3, USB20_CON_B2_SUSPEND, USB3_USB20_CON); |
542 | usb3_enable_irq_1(usb3, USB_INT_1_B2_RSUM); |
543 | |
544 | return false; |
545 | } |
546 | |
547 | static void usb3_usb2_pullup(struct renesas_usb3 *usb3, int pullup) |
548 | { |
549 | u32 bits = USB20_CON_B2_PUE | USB20_CON_B2_CONNECT; |
550 | |
551 | if (usb3->softconnect && pullup) |
552 | usb3_set_bit(usb3, bits, USB3_USB20_CON); |
553 | else |
554 | usb3_clear_bit(usb3, bits, USB3_USB20_CON); |
555 | } |
556 | |
557 | static void usb3_set_test_mode(struct renesas_usb3 *usb3) |
558 | { |
559 | u32 val = usb3_read(usb3, USB3_USB20_CON); |
560 | |
561 | val &= ~USB20_CON_B2_TSTMOD_MASK; |
562 | val |= USB20_CON_B2_TSTMOD(usb3->test_mode); |
563 | usb3_write(usb3, data: val | USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON); |
564 | if (!usb3->test_mode) |
565 | usb3_clear_bit(usb3, USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON); |
566 | } |
567 | |
568 | static void usb3_start_usb2_connection(struct renesas_usb3 *usb3) |
569 | { |
570 | usb3->disabled_count++; |
571 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); |
572 | usb3_set_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON); |
573 | usb3_usb2_pullup(usb3, pullup: 1); |
574 | } |
575 | |
576 | static int usb3_is_usb3_phy_in_u3(struct renesas_usb3 *usb3) |
577 | { |
578 | return usb3_read(usb3, USB3_USB30_CON) & USB30_CON_POW_SEL_IN_U3; |
579 | } |
580 | |
581 | static bool usb3_wakeup_usb3_phy(struct renesas_usb3 *usb3) |
582 | { |
583 | if (!usb3_is_usb3_phy_in_u3(usb3)) |
584 | return true; /* already waked it up */ |
585 | |
586 | usb3_set_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON); |
587 | usb3_enable_irq_1(usb3, USB_INT_1_B3_PLLWKUP); |
588 | |
589 | return false; |
590 | } |
591 | |
592 | static u16 usb3_feature_get_un_enabled(struct renesas_usb3 *usb3) |
593 | { |
594 | u32 mask_u2 = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2; |
595 | u32 mask_u1 = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1; |
596 | u32 val = usb3_read(usb3, USB3_SSIFCMD); |
597 | u16 ret = 0; |
598 | |
599 | /* Enables {U2,U1} if the bits of UDIR and UREQ are set to 0 */ |
600 | if (!(val & mask_u2)) |
601 | ret |= 1 << USB_DEV_STAT_U2_ENABLED; |
602 | if (!(val & mask_u1)) |
603 | ret |= 1 << USB_DEV_STAT_U1_ENABLED; |
604 | |
605 | return ret; |
606 | } |
607 | |
608 | static void usb3_feature_u2_enable(struct renesas_usb3 *usb3, bool enable) |
609 | { |
610 | u32 bits = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2; |
611 | |
612 | /* Enables U2 if the bits of UDIR and UREQ are set to 0 */ |
613 | if (enable) |
614 | usb3_clear_bit(usb3, bits, USB3_SSIFCMD); |
615 | else |
616 | usb3_set_bit(usb3, bits, USB3_SSIFCMD); |
617 | } |
618 | |
619 | static void usb3_feature_u1_enable(struct renesas_usb3 *usb3, bool enable) |
620 | { |
621 | u32 bits = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1; |
622 | |
623 | /* Enables U1 if the bits of UDIR and UREQ are set to 0 */ |
624 | if (enable) |
625 | usb3_clear_bit(usb3, bits, USB3_SSIFCMD); |
626 | else |
627 | usb3_set_bit(usb3, bits, USB3_SSIFCMD); |
628 | } |
629 | |
630 | static void usb3_start_operation_for_usb3(struct renesas_usb3 *usb3) |
631 | { |
632 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); |
633 | usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON); |
634 | usb3_set_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON); |
635 | } |
636 | |
637 | static void usb3_start_usb3_connection(struct renesas_usb3 *usb3) |
638 | { |
639 | usb3_start_operation_for_usb3(usb3); |
640 | usb3_set_bit(usb3, USB_COM_CON_RX_DETECTION, USB3_USB_COM_CON); |
641 | |
642 | usb3_enable_irq_1(usb3, USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE | |
643 | USB_INT_1_SPEED); |
644 | } |
645 | |
646 | static void usb3_stop_usb3_connection(struct renesas_usb3 *usb3) |
647 | { |
648 | usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON); |
649 | } |
650 | |
651 | static void usb3_transition_to_default_state(struct renesas_usb3 *usb3, |
652 | bool is_usb3) |
653 | { |
654 | usb3_set_bit(usb3, USB_INT_2_PIPE(0), USB3_USB_INT_ENA_2); |
655 | usb3_write(usb3, P0_INT_ALL_BITS, USB3_P0_INT_STA); |
656 | usb3_set_bit(usb3, P0_INT_ALL_BITS, USB3_P0_INT_ENA); |
657 | |
658 | if (is_usb3) |
659 | usb3_enable_irq_1(usb3, USB_INT_1_B3_WRMRST | |
660 | USB_INT_1_B3_HOTRST); |
661 | else |
662 | usb3_enable_irq_1(usb3, USB_INT_1_B2_SPND | |
663 | USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST); |
664 | } |
665 | |
666 | static void usb3_connect(struct renesas_usb3 *usb3) |
667 | { |
668 | if (usb3_wakeup_usb3_phy(usb3)) |
669 | usb3_start_usb3_connection(usb3); |
670 | } |
671 | |
672 | static void usb3_reset_epc(struct renesas_usb3 *usb3) |
673 | { |
674 | usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON); |
675 | usb3_clear_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); |
676 | usb3_set_bit(usb3, USB_COM_CON_PIPE_CLR, USB3_USB_COM_CON); |
677 | usb3->test_mode = 0; |
678 | usb3_set_test_mode(usb3); |
679 | } |
680 | |
681 | static void usb3_disconnect(struct renesas_usb3 *usb3) |
682 | { |
683 | usb3->disabled_count = 0; |
684 | usb3_usb2_pullup(usb3, pullup: 0); |
685 | usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON); |
686 | usb3_reset_epc(usb3); |
687 | usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM | USB_INT_1_B3_PLLWKUP | |
688 | USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE | |
689 | USB_INT_1_SPEED | USB_INT_1_B3_WRMRST | |
690 | USB_INT_1_B3_HOTRST | USB_INT_1_B2_SPND | |
691 | USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST); |
692 | usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON); |
693 | usb3_init_epc_registers(usb3); |
694 | |
695 | if (usb3->driver) |
696 | usb3->driver->disconnect(&usb3->gadget); |
697 | } |
698 | |
699 | static void usb3_check_vbus(struct renesas_usb3 *usb3) |
700 | { |
701 | if (usb3->workaround_for_vbus) { |
702 | usb3_connect(usb3); |
703 | } else { |
704 | usb3->extcon_usb = !!(usb3_read(usb3, USB3_USB_STA) & |
705 | USB_STA_VBUS_STA); |
706 | if (usb3->extcon_usb) |
707 | usb3_connect(usb3); |
708 | else |
709 | usb3_disconnect(usb3); |
710 | |
711 | schedule_work(work: &usb3->extcon_work); |
712 | } |
713 | } |
714 | |
715 | static void renesas_usb3_role_work(struct work_struct *work) |
716 | { |
717 | struct renesas_usb3 *usb3 = |
718 | container_of(work, struct renesas_usb3, role_work); |
719 | |
720 | usb_role_switch_set_role(sw: usb3->role_sw, role: usb3->role); |
721 | } |
722 | |
723 | static void usb3_set_mode(struct renesas_usb3 *usb3, bool host) |
724 | { |
725 | if (usb3->is_rzv2m) { |
726 | if (host) { |
727 | usb3_drd_set_bit(usb3, DRD_CON_PERI_RST, USB3_DRD_CON(usb3)); |
728 | usb3_drd_clear_bit(usb3, DRD_CON_HOST_RST, USB3_DRD_CON(usb3)); |
729 | } else { |
730 | usb3_drd_set_bit(usb3, DRD_CON_HOST_RST, USB3_DRD_CON(usb3)); |
731 | usb3_drd_clear_bit(usb3, DRD_CON_PERI_RST, USB3_DRD_CON(usb3)); |
732 | } |
733 | } |
734 | |
735 | if (host) |
736 | usb3_drd_clear_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON(usb3)); |
737 | else |
738 | usb3_drd_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON(usb3)); |
739 | } |
740 | |
741 | static void usb3_set_mode_by_role_sw(struct renesas_usb3 *usb3, bool host) |
742 | { |
743 | if (usb3->role_sw) { |
744 | usb3->role = host ? USB_ROLE_HOST : USB_ROLE_DEVICE; |
745 | schedule_work(work: &usb3->role_work); |
746 | } else { |
747 | usb3_set_mode(usb3, host); |
748 | } |
749 | } |
750 | |
751 | static void usb3_vbus_out(struct renesas_usb3 *usb3, bool enable) |
752 | { |
753 | if (enable) |
754 | usb3_drd_set_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON(usb3)); |
755 | else |
756 | usb3_drd_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON(usb3)); |
757 | } |
758 | |
759 | static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev) |
760 | { |
761 | unsigned long flags; |
762 | |
763 | spin_lock_irqsave(&usb3->lock, flags); |
764 | if (!usb3->role_sw_by_connector || |
765 | usb3->connection_state != USB_ROLE_NONE) { |
766 | usb3_set_mode_by_role_sw(usb3, host); |
767 | usb3_vbus_out(usb3, enable: a_dev); |
768 | } |
769 | /* for A-Peripheral or forced B-device mode */ |
770 | if ((!host && a_dev) || usb3->start_to_connect) |
771 | usb3_connect(usb3); |
772 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
773 | } |
774 | |
775 | static bool usb3_is_a_device(struct renesas_usb3 *usb3) |
776 | { |
777 | return !(usb3_drd_read(usb3, USB3_USB_OTG_STA(usb3)) & USB_OTG_IDMON(usb3)); |
778 | } |
779 | |
780 | static void usb3_check_id(struct renesas_usb3 *usb3) |
781 | { |
782 | usb3->extcon_host = usb3_is_a_device(usb3); |
783 | |
784 | if ((!usb3->role_sw_by_connector && usb3->extcon_host && |
785 | !usb3->forced_b_device) || usb3->connection_state == USB_ROLE_HOST) |
786 | usb3_mode_config(usb3, host: true, a_dev: true); |
787 | else |
788 | usb3_mode_config(usb3, host: false, a_dev: false); |
789 | |
790 | schedule_work(work: &usb3->extcon_work); |
791 | } |
792 | |
793 | static void renesas_usb3_init_controller(struct renesas_usb3 *usb3) |
794 | { |
795 | usb3_init_axi_bridge(usb3); |
796 | usb3_init_epc_registers(usb3); |
797 | usb3_set_bit(usb3, USB_COM_CON_PN_WDATAIF_NL | |
798 | USB_COM_CON_PN_RDATAIF_NL | USB_COM_CON_PN_LSTTR_PP, |
799 | USB3_USB_COM_CON); |
800 | usb3_drd_write(usb3, USB_OTG_IDMON(usb3), USB3_USB_OTG_INT_STA(usb3)); |
801 | usb3_drd_write(usb3, USB_OTG_IDMON(usb3), USB3_USB_OTG_INT_ENA(usb3)); |
802 | |
803 | usb3_check_id(usb3); |
804 | usb3_check_vbus(usb3); |
805 | } |
806 | |
807 | static void renesas_usb3_stop_controller(struct renesas_usb3 *usb3) |
808 | { |
809 | usb3_disconnect(usb3); |
810 | usb3_write(usb3, data: 0, USB3_P0_INT_ENA); |
811 | usb3_drd_write(usb3, data: 0, USB3_USB_OTG_INT_ENA(usb3)); |
812 | usb3_write(usb3, data: 0, USB3_USB_INT_ENA_1); |
813 | usb3_write(usb3, data: 0, USB3_USB_INT_ENA_2); |
814 | usb3_write(usb3, data: 0, USB3_AXI_INT_ENA); |
815 | } |
816 | |
817 | static void usb3_irq_epc_int_1_pll_wakeup(struct renesas_usb3 *usb3) |
818 | { |
819 | usb3_disable_irq_1(usb3, USB_INT_1_B3_PLLWKUP); |
820 | usb3_clear_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON); |
821 | usb3_start_usb3_connection(usb3); |
822 | } |
823 | |
824 | static void usb3_irq_epc_int_1_linkup_success(struct renesas_usb3 *usb3) |
825 | { |
826 | usb3_transition_to_default_state(usb3, is_usb3: true); |
827 | } |
828 | |
829 | static void usb3_irq_epc_int_1_resume(struct renesas_usb3 *usb3) |
830 | { |
831 | usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM); |
832 | usb3_start_usb2_connection(usb3); |
833 | usb3_transition_to_default_state(usb3, is_usb3: false); |
834 | } |
835 | |
836 | static void usb3_irq_epc_int_1_suspend(struct renesas_usb3 *usb3) |
837 | { |
838 | usb3_disable_irq_1(usb3, USB_INT_1_B2_SPND); |
839 | |
840 | if (usb3->gadget.speed != USB_SPEED_UNKNOWN && |
841 | usb3->gadget.state != USB_STATE_NOTATTACHED) { |
842 | if (usb3->driver && usb3->driver->suspend) |
843 | usb3->driver->suspend(&usb3->gadget); |
844 | usb_gadget_set_state(gadget: &usb3->gadget, state: USB_STATE_SUSPENDED); |
845 | } |
846 | } |
847 | |
848 | static void usb3_irq_epc_int_1_disable(struct renesas_usb3 *usb3) |
849 | { |
850 | usb3_stop_usb3_connection(usb3); |
851 | if (usb3_wakeup_usb2_phy(usb3)) |
852 | usb3_irq_epc_int_1_resume(usb3); |
853 | } |
854 | |
855 | static void usb3_irq_epc_int_1_bus_reset(struct renesas_usb3 *usb3) |
856 | { |
857 | usb3_reset_epc(usb3); |
858 | if (usb3->disabled_count < 3) |
859 | usb3_start_usb3_connection(usb3); |
860 | else |
861 | usb3_start_usb2_connection(usb3); |
862 | } |
863 | |
864 | static void usb3_irq_epc_int_1_vbus_change(struct renesas_usb3 *usb3) |
865 | { |
866 | usb3_check_vbus(usb3); |
867 | } |
868 | |
869 | static void usb3_irq_epc_int_1_hot_reset(struct renesas_usb3 *usb3) |
870 | { |
871 | usb3_reset_epc(usb3); |
872 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); |
873 | |
874 | /* This bit shall be set within 12ms from the start of HotReset */ |
875 | usb3_set_bit(usb3, USB30_CON_B3_HOTRST_CMP, USB3_USB30_CON); |
876 | } |
877 | |
878 | static void usb3_irq_epc_int_1_warm_reset(struct renesas_usb3 *usb3) |
879 | { |
880 | usb3_reset_epc(usb3); |
881 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); |
882 | |
883 | usb3_start_operation_for_usb3(usb3); |
884 | usb3_enable_irq_1(usb3, USB_INT_1_SPEED); |
885 | } |
886 | |
887 | static void usb3_irq_epc_int_1_speed(struct renesas_usb3 *usb3) |
888 | { |
889 | u32 speed = usb3_read(usb3, USB3_USB_STA) & USB_STA_SPEED_MASK; |
890 | |
891 | switch (speed) { |
892 | case USB_STA_SPEED_SS: |
893 | usb3->gadget.speed = USB_SPEED_SUPER; |
894 | usb3->gadget.ep0->maxpacket = USB3_EP0_SS_MAX_PACKET_SIZE; |
895 | break; |
896 | case USB_STA_SPEED_HS: |
897 | usb3->gadget.speed = USB_SPEED_HIGH; |
898 | usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE; |
899 | break; |
900 | case USB_STA_SPEED_FS: |
901 | usb3->gadget.speed = USB_SPEED_FULL; |
902 | usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE; |
903 | break; |
904 | default: |
905 | usb3->gadget.speed = USB_SPEED_UNKNOWN; |
906 | break; |
907 | } |
908 | } |
909 | |
910 | static void usb3_irq_epc_int_1(struct renesas_usb3 *usb3, u32 int_sta_1) |
911 | { |
912 | if (int_sta_1 & USB_INT_1_B3_PLLWKUP) |
913 | usb3_irq_epc_int_1_pll_wakeup(usb3); |
914 | |
915 | if (int_sta_1 & USB_INT_1_B3_LUPSUCS) |
916 | usb3_irq_epc_int_1_linkup_success(usb3); |
917 | |
918 | if (int_sta_1 & USB_INT_1_B3_HOTRST) |
919 | usb3_irq_epc_int_1_hot_reset(usb3); |
920 | |
921 | if (int_sta_1 & USB_INT_1_B3_WRMRST) |
922 | usb3_irq_epc_int_1_warm_reset(usb3); |
923 | |
924 | if (int_sta_1 & USB_INT_1_B3_DISABLE) |
925 | usb3_irq_epc_int_1_disable(usb3); |
926 | |
927 | if (int_sta_1 & USB_INT_1_B2_USBRST) |
928 | usb3_irq_epc_int_1_bus_reset(usb3); |
929 | |
930 | if (int_sta_1 & USB_INT_1_B2_RSUM) |
931 | usb3_irq_epc_int_1_resume(usb3); |
932 | |
933 | if (int_sta_1 & USB_INT_1_B2_SPND) |
934 | usb3_irq_epc_int_1_suspend(usb3); |
935 | |
936 | if (int_sta_1 & USB_INT_1_SPEED) |
937 | usb3_irq_epc_int_1_speed(usb3); |
938 | |
939 | if (int_sta_1 & USB_INT_1_VBUS_CNG) |
940 | usb3_irq_epc_int_1_vbus_change(usb3); |
941 | } |
942 | |
943 | static struct renesas_usb3_request *__usb3_get_request(struct renesas_usb3_ep |
944 | *usb3_ep) |
945 | { |
946 | return list_first_entry_or_null(&usb3_ep->queue, |
947 | struct renesas_usb3_request, queue); |
948 | } |
949 | |
950 | static struct renesas_usb3_request *usb3_get_request(struct renesas_usb3_ep |
951 | *usb3_ep) |
952 | { |
953 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
954 | struct renesas_usb3_request *usb3_req; |
955 | unsigned long flags; |
956 | |
957 | spin_lock_irqsave(&usb3->lock, flags); |
958 | usb3_req = __usb3_get_request(usb3_ep); |
959 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
960 | |
961 | return usb3_req; |
962 | } |
963 | |
964 | static void __usb3_request_done(struct renesas_usb3_ep *usb3_ep, |
965 | struct renesas_usb3_request *usb3_req, |
966 | int status) |
967 | { |
968 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
969 | |
970 | dev_dbg(usb3_to_dev(usb3), "giveback: ep%2d, %u, %u, %d\n" , |
971 | usb3_ep->num, usb3_req->req.length, usb3_req->req.actual, |
972 | status); |
973 | usb3_req->req.status = status; |
974 | usb3_ep->started = false; |
975 | list_del_init(entry: &usb3_req->queue); |
976 | spin_unlock(lock: &usb3->lock); |
977 | usb_gadget_giveback_request(ep: &usb3_ep->ep, req: &usb3_req->req); |
978 | spin_lock(lock: &usb3->lock); |
979 | } |
980 | |
981 | static void usb3_request_done(struct renesas_usb3_ep *usb3_ep, |
982 | struct renesas_usb3_request *usb3_req, int status) |
983 | { |
984 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
985 | unsigned long flags; |
986 | |
987 | spin_lock_irqsave(&usb3->lock, flags); |
988 | __usb3_request_done(usb3_ep, usb3_req, status); |
989 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
990 | } |
991 | |
992 | static void usb3_irq_epc_pipe0_status_end(struct renesas_usb3 *usb3) |
993 | { |
994 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); |
995 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); |
996 | |
997 | if (usb3_req) |
998 | usb3_request_done(usb3_ep, usb3_req, status: 0); |
999 | if (usb3->test_mode) |
1000 | usb3_set_test_mode(usb3); |
1001 | } |
1002 | |
1003 | static void usb3_get_setup_data(struct renesas_usb3 *usb3, |
1004 | struct usb_ctrlrequest *ctrl) |
1005 | { |
1006 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); |
1007 | u32 *data = (u32 *)ctrl; |
1008 | |
1009 | *data++ = usb3_read(usb3, USB3_STUP_DAT_0); |
1010 | *data = usb3_read(usb3, USB3_STUP_DAT_1); |
1011 | |
1012 | /* update this driver's flag */ |
1013 | usb3_ep->dir_in = !!(ctrl->bRequestType & USB_DIR_IN); |
1014 | } |
1015 | |
1016 | static void usb3_set_p0_con_update_res(struct renesas_usb3 *usb3, u32 res) |
1017 | { |
1018 | u32 val = usb3_read(usb3, USB3_P0_CON); |
1019 | |
1020 | val &= ~(P0_CON_ST_RES_MASK | P0_CON_OT_RES_MASK | P0_CON_IN_RES_MASK); |
1021 | val |= res | P0_CON_RES_WEN; |
1022 | usb3_write(usb3, data: val, USB3_P0_CON); |
1023 | } |
1024 | |
1025 | static void usb3_set_p0_con_for_ctrl_read_data(struct renesas_usb3 *usb3) |
1026 | { |
1027 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY | |
1028 | P0_CON_OT_RES_FORCE_STALL | |
1029 | P0_CON_IN_RES_NORMAL); |
1030 | } |
1031 | |
1032 | static void usb3_set_p0_con_for_ctrl_read_status(struct renesas_usb3 *usb3) |
1033 | { |
1034 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL | |
1035 | P0_CON_OT_RES_FORCE_STALL | |
1036 | P0_CON_IN_RES_NORMAL); |
1037 | } |
1038 | |
1039 | static void usb3_set_p0_con_for_ctrl_write_data(struct renesas_usb3 *usb3) |
1040 | { |
1041 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY | |
1042 | P0_CON_OT_RES_NORMAL | |
1043 | P0_CON_IN_RES_FORCE_STALL); |
1044 | } |
1045 | |
1046 | static void usb3_set_p0_con_for_ctrl_write_status(struct renesas_usb3 *usb3) |
1047 | { |
1048 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL | |
1049 | P0_CON_OT_RES_NORMAL | |
1050 | P0_CON_IN_RES_FORCE_STALL); |
1051 | } |
1052 | |
1053 | static void usb3_set_p0_con_for_no_data(struct renesas_usb3 *usb3) |
1054 | { |
1055 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL | |
1056 | P0_CON_OT_RES_FORCE_STALL | |
1057 | P0_CON_IN_RES_FORCE_STALL); |
1058 | } |
1059 | |
1060 | static void usb3_set_p0_con_stall(struct renesas_usb3 *usb3) |
1061 | { |
1062 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_STALL | |
1063 | P0_CON_OT_RES_FORCE_STALL | |
1064 | P0_CON_IN_RES_FORCE_STALL); |
1065 | } |
1066 | |
1067 | static void usb3_set_p0_con_stop(struct renesas_usb3 *usb3) |
1068 | { |
1069 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY | |
1070 | P0_CON_OT_RES_FORCE_NRDY | |
1071 | P0_CON_IN_RES_FORCE_NRDY); |
1072 | } |
1073 | |
1074 | static int usb3_pn_change(struct renesas_usb3 *usb3, int num) |
1075 | { |
1076 | if (num == 0 || num > usb3->num_usb3_eps) |
1077 | return -ENXIO; |
1078 | |
1079 | usb3_write(usb3, data: num, USB3_PIPE_COM); |
1080 | |
1081 | return 0; |
1082 | } |
1083 | |
1084 | static void usb3_set_pn_con_update_res(struct renesas_usb3 *usb3, u32 res) |
1085 | { |
1086 | u32 val = usb3_read(usb3, USB3_PN_CON); |
1087 | |
1088 | val &= ~PN_CON_RES_MASK; |
1089 | val |= res & PN_CON_RES_MASK; |
1090 | val |= PN_CON_RES_WEN; |
1091 | usb3_write(usb3, data: val, USB3_PN_CON); |
1092 | } |
1093 | |
1094 | static void usb3_pn_start(struct renesas_usb3 *usb3) |
1095 | { |
1096 | usb3_set_pn_con_update_res(usb3, PN_CON_RES_NORMAL); |
1097 | } |
1098 | |
1099 | static void usb3_pn_stop(struct renesas_usb3 *usb3) |
1100 | { |
1101 | usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_NRDY); |
1102 | } |
1103 | |
1104 | static void usb3_pn_stall(struct renesas_usb3 *usb3) |
1105 | { |
1106 | usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_STALL); |
1107 | } |
1108 | |
1109 | static int usb3_pn_con_clear(struct renesas_usb3 *usb3) |
1110 | { |
1111 | usb3_set_bit(usb3, PN_CON_CLR, USB3_PN_CON); |
1112 | |
1113 | return usb3_wait(usb3, USB3_PN_CON, PN_CON_CLR, expected: 0); |
1114 | } |
1115 | |
1116 | static bool usb3_is_transfer_complete(struct renesas_usb3_ep *usb3_ep, |
1117 | struct renesas_usb3_request *usb3_req) |
1118 | { |
1119 | struct usb_request *req = &usb3_req->req; |
1120 | |
1121 | if ((!req->zero && req->actual == req->length) || |
1122 | (req->actual % usb3_ep->ep.maxpacket) || (req->length == 0)) |
1123 | return true; |
1124 | else |
1125 | return false; |
1126 | } |
1127 | |
1128 | static int usb3_wait_pipe_status(struct renesas_usb3_ep *usb3_ep, u32 mask) |
1129 | { |
1130 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1131 | u32 sta_reg = usb3_ep->num ? USB3_PN_STA : USB3_P0_STA; |
1132 | |
1133 | return usb3_wait(usb3, reg: sta_reg, mask, expected: mask); |
1134 | } |
1135 | |
1136 | static void usb3_set_px_con_send(struct renesas_usb3_ep *usb3_ep, int bytes, |
1137 | bool last) |
1138 | { |
1139 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1140 | u32 con_reg = usb3_ep->num ? USB3_PN_CON : USB3_P0_CON; |
1141 | u32 val = usb3_read(usb3, offs: con_reg); |
1142 | |
1143 | val |= PX_CON_SEND | PX_CON_BYTE_EN_BYTES(bytes); |
1144 | val |= (usb3_ep->num && last) ? PN_CON_LAST : 0; |
1145 | usb3_write(usb3, data: val, offs: con_reg); |
1146 | } |
1147 | |
1148 | static int usb3_write_pipe(struct renesas_usb3_ep *usb3_ep, |
1149 | struct renesas_usb3_request *usb3_req, |
1150 | u32 fifo_reg) |
1151 | { |
1152 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1153 | int i; |
1154 | int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual, |
1155 | usb3_ep->ep.maxpacket); |
1156 | u8 *buf = usb3_req->req.buf + usb3_req->req.actual; |
1157 | u32 tmp = 0; |
1158 | bool is_last = !len ? true : false; |
1159 | |
1160 | if (usb3_wait_pipe_status(usb3_ep, PX_STA_BUFSTS) < 0) |
1161 | return -EBUSY; |
1162 | |
1163 | /* Update gadget driver parameter */ |
1164 | usb3_req->req.actual += len; |
1165 | |
1166 | /* Write data to the register */ |
1167 | if (len >= 4) { |
1168 | iowrite32_rep(port: usb3->reg + fifo_reg, buf, count: len / 4); |
1169 | buf += (len / 4) * 4; |
1170 | len %= 4; /* update len to use usb3_set_pX_con_send() */ |
1171 | } |
1172 | |
1173 | if (len) { |
1174 | for (i = 0; i < len; i++) |
1175 | tmp |= buf[i] << (8 * i); |
1176 | usb3_write(usb3, data: tmp, offs: fifo_reg); |
1177 | } |
1178 | |
1179 | if (!is_last) |
1180 | is_last = usb3_is_transfer_complete(usb3_ep, usb3_req); |
1181 | /* Send the data */ |
1182 | usb3_set_px_con_send(usb3_ep, bytes: len, last: is_last); |
1183 | |
1184 | return is_last ? 0 : -EAGAIN; |
1185 | } |
1186 | |
1187 | static u32 usb3_get_received_length(struct renesas_usb3_ep *usb3_ep) |
1188 | { |
1189 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1190 | u32 lng_reg = usb3_ep->num ? USB3_PN_LNG : USB3_P0_LNG; |
1191 | |
1192 | return usb3_read(usb3, offs: lng_reg); |
1193 | } |
1194 | |
1195 | static int usb3_read_pipe(struct renesas_usb3_ep *usb3_ep, |
1196 | struct renesas_usb3_request *usb3_req, u32 fifo_reg) |
1197 | { |
1198 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1199 | int i; |
1200 | int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual, |
1201 | usb3_get_received_length(usb3_ep)); |
1202 | u8 *buf = usb3_req->req.buf + usb3_req->req.actual; |
1203 | u32 tmp = 0; |
1204 | |
1205 | if (!len) |
1206 | return 0; |
1207 | |
1208 | /* Update gadget driver parameter */ |
1209 | usb3_req->req.actual += len; |
1210 | |
1211 | /* Read data from the register */ |
1212 | if (len >= 4) { |
1213 | ioread32_rep(port: usb3->reg + fifo_reg, buf, count: len / 4); |
1214 | buf += (len / 4) * 4; |
1215 | len %= 4; |
1216 | } |
1217 | |
1218 | if (len) { |
1219 | tmp = usb3_read(usb3, offs: fifo_reg); |
1220 | for (i = 0; i < len; i++) |
1221 | buf[i] = (tmp >> (8 * i)) & 0xff; |
1222 | } |
1223 | |
1224 | return usb3_is_transfer_complete(usb3_ep, usb3_req) ? 0 : -EAGAIN; |
1225 | } |
1226 | |
1227 | static void usb3_set_status_stage(struct renesas_usb3_ep *usb3_ep, |
1228 | struct renesas_usb3_request *usb3_req) |
1229 | { |
1230 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1231 | |
1232 | if (usb3_ep->dir_in) { |
1233 | usb3_set_p0_con_for_ctrl_read_status(usb3); |
1234 | } else { |
1235 | if (!usb3_req->req.length) |
1236 | usb3_set_p0_con_for_no_data(usb3); |
1237 | else |
1238 | usb3_set_p0_con_for_ctrl_write_status(usb3); |
1239 | } |
1240 | } |
1241 | |
1242 | static void usb3_p0_xfer(struct renesas_usb3_ep *usb3_ep, |
1243 | struct renesas_usb3_request *usb3_req) |
1244 | { |
1245 | int ret; |
1246 | |
1247 | if (usb3_ep->dir_in) |
1248 | ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_P0_WRITE); |
1249 | else |
1250 | ret = usb3_read_pipe(usb3_ep, usb3_req, USB3_P0_READ); |
1251 | |
1252 | if (!ret) |
1253 | usb3_set_status_stage(usb3_ep, usb3_req); |
1254 | } |
1255 | |
1256 | static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep, |
1257 | struct renesas_usb3_request *usb3_req) |
1258 | { |
1259 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1260 | |
1261 | if (usb3_ep->started) |
1262 | return; |
1263 | |
1264 | usb3_ep->started = true; |
1265 | |
1266 | if (usb3_ep->dir_in) { |
1267 | usb3_set_bit(usb3, P0_MOD_DIR, USB3_P0_MOD); |
1268 | usb3_set_p0_con_for_ctrl_read_data(usb3); |
1269 | } else { |
1270 | usb3_clear_bit(usb3, P0_MOD_DIR, USB3_P0_MOD); |
1271 | if (usb3_req->req.length) |
1272 | usb3_set_p0_con_for_ctrl_write_data(usb3); |
1273 | } |
1274 | |
1275 | usb3_p0_xfer(usb3_ep, usb3_req); |
1276 | } |
1277 | |
1278 | static void usb3_enable_dma_pipen(struct renesas_usb3 *usb3) |
1279 | { |
1280 | usb3_set_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON); |
1281 | } |
1282 | |
1283 | static void usb3_disable_dma_pipen(struct renesas_usb3 *usb3) |
1284 | { |
1285 | usb3_clear_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON); |
1286 | } |
1287 | |
1288 | static void usb3_enable_dma_irq(struct renesas_usb3 *usb3, int num) |
1289 | { |
1290 | usb3_set_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA); |
1291 | } |
1292 | |
1293 | static void usb3_disable_dma_irq(struct renesas_usb3 *usb3, int num) |
1294 | { |
1295 | usb3_clear_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA); |
1296 | } |
1297 | |
1298 | static u32 usb3_dma_mps_to_prd_word1(struct renesas_usb3_ep *usb3_ep) |
1299 | { |
1300 | switch (usb3_ep->ep.maxpacket) { |
1301 | case 8: |
1302 | return USB3_PRD1_MPS_8; |
1303 | case 16: |
1304 | return USB3_PRD1_MPS_16; |
1305 | case 32: |
1306 | return USB3_PRD1_MPS_32; |
1307 | case 64: |
1308 | return USB3_PRD1_MPS_64; |
1309 | case 512: |
1310 | return USB3_PRD1_MPS_512; |
1311 | case 1024: |
1312 | return USB3_PRD1_MPS_1024; |
1313 | default: |
1314 | return USB3_PRD1_MPS_RESERVED; |
1315 | } |
1316 | } |
1317 | |
1318 | static bool usb3_dma_get_setting_area(struct renesas_usb3_ep *usb3_ep, |
1319 | struct renesas_usb3_request *usb3_req) |
1320 | { |
1321 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1322 | struct renesas_usb3_dma *dma; |
1323 | int i; |
1324 | bool ret = false; |
1325 | |
1326 | if (usb3_req->req.length > USB3_DMA_MAX_XFER_SIZE_ALL_PRDS) { |
1327 | dev_dbg(usb3_to_dev(usb3), "%s: the length is too big (%d)\n" , |
1328 | __func__, usb3_req->req.length); |
1329 | return false; |
1330 | } |
1331 | |
1332 | /* The driver doesn't handle zero-length packet via dmac */ |
1333 | if (!usb3_req->req.length) |
1334 | return false; |
1335 | |
1336 | if (usb3_dma_mps_to_prd_word1(usb3_ep) == USB3_PRD1_MPS_RESERVED) |
1337 | return false; |
1338 | |
1339 | usb3_for_each_dma(usb3, dma, i) { |
1340 | if (dma->used) |
1341 | continue; |
1342 | |
1343 | if (usb_gadget_map_request(gadget: &usb3->gadget, req: &usb3_req->req, |
1344 | is_in: usb3_ep->dir_in) < 0) |
1345 | break; |
1346 | |
1347 | dma->used = true; |
1348 | usb3_ep->dma = dma; |
1349 | ret = true; |
1350 | break; |
1351 | } |
1352 | |
1353 | return ret; |
1354 | } |
1355 | |
1356 | static void usb3_dma_put_setting_area(struct renesas_usb3_ep *usb3_ep, |
1357 | struct renesas_usb3_request *usb3_req) |
1358 | { |
1359 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1360 | int i; |
1361 | struct renesas_usb3_dma *dma; |
1362 | |
1363 | usb3_for_each_dma(usb3, dma, i) { |
1364 | if (usb3_ep->dma == dma) { |
1365 | usb_gadget_unmap_request(gadget: &usb3->gadget, req: &usb3_req->req, |
1366 | is_in: usb3_ep->dir_in); |
1367 | dma->used = false; |
1368 | usb3_ep->dma = NULL; |
1369 | break; |
1370 | } |
1371 | } |
1372 | } |
1373 | |
1374 | static void usb3_dma_fill_prd(struct renesas_usb3_ep *usb3_ep, |
1375 | struct renesas_usb3_request *usb3_req) |
1376 | { |
1377 | struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd; |
1378 | u32 remain = usb3_req->req.length; |
1379 | u32 dma = usb3_req->req.dma; |
1380 | u32 len; |
1381 | int i = 0; |
1382 | |
1383 | do { |
1384 | len = min_t(u32, remain, USB3_DMA_MAX_XFER_SIZE) & |
1385 | USB3_PRD1_SIZE_MASK; |
1386 | cur_prd->word1 = usb3_dma_mps_to_prd_word1(usb3_ep) | |
1387 | USB3_PRD1_B_INC | len; |
1388 | cur_prd->bap = dma; |
1389 | remain -= len; |
1390 | dma += len; |
1391 | if (!remain || (i + 1) < USB3_DMA_NUM_PRD_ENTRIES) |
1392 | break; |
1393 | |
1394 | cur_prd++; |
1395 | i++; |
1396 | } while (1); |
1397 | |
1398 | cur_prd->word1 |= USB3_PRD1_E | USB3_PRD1_INT; |
1399 | if (usb3_ep->dir_in) |
1400 | cur_prd->word1 |= USB3_PRD1_LST; |
1401 | } |
1402 | |
1403 | static void usb3_dma_kick_prd(struct renesas_usb3_ep *usb3_ep) |
1404 | { |
1405 | struct renesas_usb3_dma *dma = usb3_ep->dma; |
1406 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1407 | u32 dma_con = DMA_COM_PIPE_NO(usb3_ep->num) | DMA_CON_PRD_EN; |
1408 | |
1409 | if (usb3_ep->dir_in) |
1410 | dma_con |= DMA_CON_PIPE_DIR; |
1411 | |
1412 | wmb(); /* prd entries should be in system memory here */ |
1413 | |
1414 | usb3_write(usb3, data: 1 << usb3_ep->num, USB3_DMA_INT_STA); |
1415 | usb3_write(usb3, AXI_INT_PRDEN_CLR_STA(dma->num) | |
1416 | AXI_INT_PRDERR_STA(dma->num), USB3_AXI_INT_STA); |
1417 | |
1418 | usb3_write(usb3, data: dma->prd_dma, USB3_DMA_CH0_PRD_ADR(dma->num)); |
1419 | usb3_write(usb3, data: dma_con, USB3_DMA_CH0_CON(dma->num)); |
1420 | usb3_enable_dma_irq(usb3, num: usb3_ep->num); |
1421 | } |
1422 | |
1423 | static void usb3_dma_stop_prd(struct renesas_usb3_ep *usb3_ep) |
1424 | { |
1425 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1426 | struct renesas_usb3_dma *dma = usb3_ep->dma; |
1427 | |
1428 | usb3_disable_dma_irq(usb3, num: usb3_ep->num); |
1429 | usb3_write(usb3, data: 0, USB3_DMA_CH0_CON(dma->num)); |
1430 | } |
1431 | |
1432 | static int usb3_dma_update_status(struct renesas_usb3_ep *usb3_ep, |
1433 | struct renesas_usb3_request *usb3_req) |
1434 | { |
1435 | struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd; |
1436 | struct usb_request *req = &usb3_req->req; |
1437 | u32 remain, len; |
1438 | int i = 0; |
1439 | int status = 0; |
1440 | |
1441 | rmb(); /* The controller updated prd entries */ |
1442 | |
1443 | do { |
1444 | if (cur_prd->word1 & USB3_PRD1_D) |
1445 | status = -EIO; |
1446 | if (cur_prd->word1 & USB3_PRD1_E) |
1447 | len = req->length % USB3_DMA_MAX_XFER_SIZE; |
1448 | else |
1449 | len = USB3_DMA_MAX_XFER_SIZE; |
1450 | remain = cur_prd->word1 & USB3_PRD1_SIZE_MASK; |
1451 | req->actual += len - remain; |
1452 | |
1453 | if (cur_prd->word1 & USB3_PRD1_E || |
1454 | (i + 1) < USB3_DMA_NUM_PRD_ENTRIES) |
1455 | break; |
1456 | |
1457 | cur_prd++; |
1458 | i++; |
1459 | } while (1); |
1460 | |
1461 | return status; |
1462 | } |
1463 | |
1464 | static bool usb3_dma_try_start(struct renesas_usb3_ep *usb3_ep, |
1465 | struct renesas_usb3_request *usb3_req) |
1466 | { |
1467 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1468 | |
1469 | if (!use_dma) |
1470 | return false; |
1471 | |
1472 | if (usb3_dma_get_setting_area(usb3_ep, usb3_req)) { |
1473 | usb3_pn_stop(usb3); |
1474 | usb3_enable_dma_pipen(usb3); |
1475 | usb3_dma_fill_prd(usb3_ep, usb3_req); |
1476 | usb3_dma_kick_prd(usb3_ep); |
1477 | usb3_pn_start(usb3); |
1478 | return true; |
1479 | } |
1480 | |
1481 | return false; |
1482 | } |
1483 | |
1484 | static int usb3_dma_try_stop(struct renesas_usb3_ep *usb3_ep, |
1485 | struct renesas_usb3_request *usb3_req) |
1486 | { |
1487 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1488 | unsigned long flags; |
1489 | int status = 0; |
1490 | |
1491 | spin_lock_irqsave(&usb3->lock, flags); |
1492 | if (!usb3_ep->dma) |
1493 | goto out; |
1494 | |
1495 | if (!usb3_pn_change(usb3, num: usb3_ep->num)) |
1496 | usb3_disable_dma_pipen(usb3); |
1497 | usb3_dma_stop_prd(usb3_ep); |
1498 | status = usb3_dma_update_status(usb3_ep, usb3_req); |
1499 | usb3_dma_put_setting_area(usb3_ep, usb3_req); |
1500 | |
1501 | out: |
1502 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
1503 | return status; |
1504 | } |
1505 | |
1506 | static int renesas_usb3_dma_free_prd(struct renesas_usb3 *usb3, |
1507 | struct device *dev) |
1508 | { |
1509 | int i; |
1510 | struct renesas_usb3_dma *dma; |
1511 | |
1512 | usb3_for_each_dma(usb3, dma, i) { |
1513 | if (dma->prd) { |
1514 | dma_free_coherent(dev, USB3_DMA_PRD_SIZE, |
1515 | cpu_addr: dma->prd, dma_handle: dma->prd_dma); |
1516 | dma->prd = NULL; |
1517 | } |
1518 | } |
1519 | |
1520 | return 0; |
1521 | } |
1522 | |
1523 | static int renesas_usb3_dma_alloc_prd(struct renesas_usb3 *usb3, |
1524 | struct device *dev) |
1525 | { |
1526 | int i; |
1527 | struct renesas_usb3_dma *dma; |
1528 | |
1529 | if (!use_dma) |
1530 | return 0; |
1531 | |
1532 | usb3_for_each_dma(usb3, dma, i) { |
1533 | dma->prd = dma_alloc_coherent(dev, USB3_DMA_PRD_SIZE, |
1534 | dma_handle: &dma->prd_dma, GFP_KERNEL); |
1535 | if (!dma->prd) { |
1536 | renesas_usb3_dma_free_prd(usb3, dev); |
1537 | return -ENOMEM; |
1538 | } |
1539 | dma->num = i + 1; |
1540 | } |
1541 | |
1542 | return 0; |
1543 | } |
1544 | |
1545 | static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep, |
1546 | struct renesas_usb3_request *usb3_req) |
1547 | { |
1548 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1549 | struct renesas_usb3_request *usb3_req_first; |
1550 | unsigned long flags; |
1551 | int ret = -EAGAIN; |
1552 | u32 enable_bits = 0; |
1553 | |
1554 | spin_lock_irqsave(&usb3->lock, flags); |
1555 | if (usb3_ep->halt || usb3_ep->started) |
1556 | goto out; |
1557 | usb3_req_first = __usb3_get_request(usb3_ep); |
1558 | if (!usb3_req_first || usb3_req != usb3_req_first) |
1559 | goto out; |
1560 | |
1561 | if (usb3_pn_change(usb3, num: usb3_ep->num) < 0) |
1562 | goto out; |
1563 | |
1564 | usb3_ep->started = true; |
1565 | |
1566 | if (usb3_dma_try_start(usb3_ep, usb3_req)) |
1567 | goto out; |
1568 | |
1569 | usb3_pn_start(usb3); |
1570 | |
1571 | if (usb3_ep->dir_in) { |
1572 | ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE); |
1573 | enable_bits |= PN_INT_LSTTR; |
1574 | } |
1575 | |
1576 | if (ret < 0) |
1577 | enable_bits |= PN_INT_BFRDY; |
1578 | |
1579 | if (enable_bits) { |
1580 | usb3_set_bit(usb3, bits: enable_bits, USB3_PN_INT_ENA); |
1581 | usb3_enable_pipe_irq(usb3, num: usb3_ep->num); |
1582 | } |
1583 | out: |
1584 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
1585 | } |
1586 | |
1587 | static int renesas_usb3_ep_queue(struct usb_ep *_ep, struct usb_request *_req, |
1588 | gfp_t gfp_flags) |
1589 | { |
1590 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); |
1591 | struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req); |
1592 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1593 | unsigned long flags; |
1594 | |
1595 | dev_dbg(usb3_to_dev(usb3), "ep_queue: ep%2d, %u\n" , usb3_ep->num, |
1596 | _req->length); |
1597 | |
1598 | _req->status = -EINPROGRESS; |
1599 | _req->actual = 0; |
1600 | spin_lock_irqsave(&usb3->lock, flags); |
1601 | list_add_tail(new: &usb3_req->queue, head: &usb3_ep->queue); |
1602 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
1603 | |
1604 | if (!usb3_ep->num) |
1605 | usb3_start_pipe0(usb3_ep, usb3_req); |
1606 | else |
1607 | usb3_start_pipen(usb3_ep, usb3_req); |
1608 | |
1609 | return 0; |
1610 | } |
1611 | |
1612 | static void usb3_set_device_address(struct renesas_usb3 *usb3, u16 addr) |
1613 | { |
1614 | /* DEV_ADDR bit field is cleared by WarmReset, HotReset and BusReset */ |
1615 | usb3_set_bit(usb3, USB_COM_CON_DEV_ADDR(addr), USB3_USB_COM_CON); |
1616 | } |
1617 | |
1618 | static bool usb3_std_req_set_address(struct renesas_usb3 *usb3, |
1619 | struct usb_ctrlrequest *ctrl) |
1620 | { |
1621 | if (le16_to_cpu(ctrl->wValue) >= 128) |
1622 | return true; /* stall */ |
1623 | |
1624 | usb3_set_device_address(usb3, le16_to_cpu(ctrl->wValue)); |
1625 | usb3_set_p0_con_for_no_data(usb3); |
1626 | |
1627 | return false; |
1628 | } |
1629 | |
1630 | static void usb3_pipe0_internal_xfer(struct renesas_usb3 *usb3, |
1631 | void *tx_data, size_t len, |
1632 | void (*complete)(struct usb_ep *ep, |
1633 | struct usb_request *req)) |
1634 | { |
1635 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); |
1636 | |
1637 | if (tx_data) |
1638 | memcpy(usb3->ep0_buf, tx_data, |
1639 | min_t(size_t, len, USB3_EP0_BUF_SIZE)); |
1640 | |
1641 | usb3->ep0_req->buf = &usb3->ep0_buf; |
1642 | usb3->ep0_req->length = len; |
1643 | usb3->ep0_req->complete = complete; |
1644 | renesas_usb3_ep_queue(ep: &usb3_ep->ep, req: usb3->ep0_req, GFP_ATOMIC); |
1645 | } |
1646 | |
1647 | static void usb3_pipe0_get_status_completion(struct usb_ep *ep, |
1648 | struct usb_request *req) |
1649 | { |
1650 | } |
1651 | |
1652 | static bool usb3_std_req_get_status(struct renesas_usb3 *usb3, |
1653 | struct usb_ctrlrequest *ctrl) |
1654 | { |
1655 | bool stall = false; |
1656 | struct renesas_usb3_ep *usb3_ep; |
1657 | int num; |
1658 | u16 status = 0; |
1659 | __le16 tx_data; |
1660 | |
1661 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
1662 | case USB_RECIP_DEVICE: |
1663 | if (usb3->gadget.is_selfpowered) |
1664 | status |= 1 << USB_DEVICE_SELF_POWERED; |
1665 | if (usb3->gadget.speed == USB_SPEED_SUPER) |
1666 | status |= usb3_feature_get_un_enabled(usb3); |
1667 | break; |
1668 | case USB_RECIP_INTERFACE: |
1669 | break; |
1670 | case USB_RECIP_ENDPOINT: |
1671 | num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; |
1672 | usb3_ep = usb3_get_ep(usb3, num); |
1673 | if (usb3_ep->halt) |
1674 | status |= 1 << USB_ENDPOINT_HALT; |
1675 | break; |
1676 | default: |
1677 | stall = true; |
1678 | break; |
1679 | } |
1680 | |
1681 | if (!stall) { |
1682 | tx_data = cpu_to_le16(status); |
1683 | dev_dbg(usb3_to_dev(usb3), "get_status: req = %p\n" , |
1684 | usb_req_to_usb3_req(usb3->ep0_req)); |
1685 | usb3_pipe0_internal_xfer(usb3, tx_data: &tx_data, len: sizeof(tx_data), |
1686 | complete: usb3_pipe0_get_status_completion); |
1687 | } |
1688 | |
1689 | return stall; |
1690 | } |
1691 | |
1692 | static bool usb3_std_req_feature_device(struct renesas_usb3 *usb3, |
1693 | struct usb_ctrlrequest *ctrl, bool set) |
1694 | { |
1695 | bool stall = true; |
1696 | u16 w_value = le16_to_cpu(ctrl->wValue); |
1697 | |
1698 | switch (w_value) { |
1699 | case USB_DEVICE_TEST_MODE: |
1700 | if (!set) |
1701 | break; |
1702 | usb3->test_mode = le16_to_cpu(ctrl->wIndex) >> 8; |
1703 | stall = false; |
1704 | break; |
1705 | case USB_DEVICE_U1_ENABLE: |
1706 | case USB_DEVICE_U2_ENABLE: |
1707 | if (usb3->gadget.speed != USB_SPEED_SUPER) |
1708 | break; |
1709 | if (w_value == USB_DEVICE_U1_ENABLE) |
1710 | usb3_feature_u1_enable(usb3, enable: set); |
1711 | if (w_value == USB_DEVICE_U2_ENABLE) |
1712 | usb3_feature_u2_enable(usb3, enable: set); |
1713 | stall = false; |
1714 | break; |
1715 | default: |
1716 | break; |
1717 | } |
1718 | |
1719 | return stall; |
1720 | } |
1721 | |
1722 | static int usb3_set_halt_p0(struct renesas_usb3_ep *usb3_ep, bool halt) |
1723 | { |
1724 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1725 | |
1726 | if (unlikely(usb3_ep->num)) |
1727 | return -EINVAL; |
1728 | |
1729 | usb3_ep->halt = halt; |
1730 | if (halt) |
1731 | usb3_set_p0_con_stall(usb3); |
1732 | else |
1733 | usb3_set_p0_con_stop(usb3); |
1734 | |
1735 | return 0; |
1736 | } |
1737 | |
1738 | static int usb3_set_halt_pn(struct renesas_usb3_ep *usb3_ep, bool halt, |
1739 | bool is_clear_feature) |
1740 | { |
1741 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
1742 | unsigned long flags; |
1743 | |
1744 | spin_lock_irqsave(&usb3->lock, flags); |
1745 | if (!usb3_pn_change(usb3, num: usb3_ep->num)) { |
1746 | usb3_ep->halt = halt; |
1747 | if (halt) { |
1748 | usb3_pn_stall(usb3); |
1749 | } else if (!is_clear_feature || !usb3_ep->wedge) { |
1750 | usb3_pn_con_clear(usb3); |
1751 | usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON); |
1752 | usb3_pn_stop(usb3); |
1753 | } |
1754 | } |
1755 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
1756 | |
1757 | return 0; |
1758 | } |
1759 | |
1760 | static int usb3_set_halt(struct renesas_usb3_ep *usb3_ep, bool halt, |
1761 | bool is_clear_feature) |
1762 | { |
1763 | int ret = 0; |
1764 | |
1765 | if (halt && usb3_ep->started) |
1766 | return -EAGAIN; |
1767 | |
1768 | if (usb3_ep->num) |
1769 | ret = usb3_set_halt_pn(usb3_ep, halt, is_clear_feature); |
1770 | else |
1771 | ret = usb3_set_halt_p0(usb3_ep, halt); |
1772 | |
1773 | return ret; |
1774 | } |
1775 | |
1776 | static bool usb3_std_req_feature_endpoint(struct renesas_usb3 *usb3, |
1777 | struct usb_ctrlrequest *ctrl, |
1778 | bool set) |
1779 | { |
1780 | int num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; |
1781 | struct renesas_usb3_ep *usb3_ep; |
1782 | struct renesas_usb3_request *usb3_req; |
1783 | |
1784 | if (le16_to_cpu(ctrl->wValue) != USB_ENDPOINT_HALT) |
1785 | return true; /* stall */ |
1786 | |
1787 | usb3_ep = usb3_get_ep(usb3, num); |
1788 | usb3_set_halt(usb3_ep, halt: set, is_clear_feature: true); |
1789 | |
1790 | /* Restarts a queue if clear feature */ |
1791 | if (!set) { |
1792 | usb3_ep->started = false; |
1793 | usb3_req = usb3_get_request(usb3_ep); |
1794 | if (usb3_req) |
1795 | usb3_start_pipen(usb3_ep, usb3_req); |
1796 | } |
1797 | |
1798 | return false; |
1799 | } |
1800 | |
1801 | static bool usb3_std_req_feature(struct renesas_usb3 *usb3, |
1802 | struct usb_ctrlrequest *ctrl, bool set) |
1803 | { |
1804 | bool stall = false; |
1805 | |
1806 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
1807 | case USB_RECIP_DEVICE: |
1808 | stall = usb3_std_req_feature_device(usb3, ctrl, set); |
1809 | break; |
1810 | case USB_RECIP_INTERFACE: |
1811 | break; |
1812 | case USB_RECIP_ENDPOINT: |
1813 | stall = usb3_std_req_feature_endpoint(usb3, ctrl, set); |
1814 | break; |
1815 | default: |
1816 | stall = true; |
1817 | break; |
1818 | } |
1819 | |
1820 | if (!stall) |
1821 | usb3_set_p0_con_for_no_data(usb3); |
1822 | |
1823 | return stall; |
1824 | } |
1825 | |
1826 | static void usb3_pipe0_set_sel_completion(struct usb_ep *ep, |
1827 | struct usb_request *req) |
1828 | { |
1829 | /* TODO */ |
1830 | } |
1831 | |
1832 | static bool usb3_std_req_set_sel(struct renesas_usb3 *usb3, |
1833 | struct usb_ctrlrequest *ctrl) |
1834 | { |
1835 | u16 w_length = le16_to_cpu(ctrl->wLength); |
1836 | |
1837 | if (w_length != 6) |
1838 | return true; /* stall */ |
1839 | |
1840 | dev_dbg(usb3_to_dev(usb3), "set_sel: req = %p\n" , |
1841 | usb_req_to_usb3_req(usb3->ep0_req)); |
1842 | usb3_pipe0_internal_xfer(usb3, NULL, len: 6, complete: usb3_pipe0_set_sel_completion); |
1843 | |
1844 | return false; |
1845 | } |
1846 | |
1847 | static bool usb3_std_req_set_configuration(struct renesas_usb3 *usb3, |
1848 | struct usb_ctrlrequest *ctrl) |
1849 | { |
1850 | if (le16_to_cpu(ctrl->wValue) > 0) |
1851 | usb3_set_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON); |
1852 | else |
1853 | usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON); |
1854 | |
1855 | return false; |
1856 | } |
1857 | |
1858 | /** |
1859 | * usb3_handle_standard_request - handle some standard requests |
1860 | * @usb3: the renesas_usb3 pointer |
1861 | * @ctrl: a pointer of setup data |
1862 | * |
1863 | * Returns true if this function handled a standard request |
1864 | */ |
1865 | static bool usb3_handle_standard_request(struct renesas_usb3 *usb3, |
1866 | struct usb_ctrlrequest *ctrl) |
1867 | { |
1868 | bool ret = false; |
1869 | bool stall = false; |
1870 | |
1871 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
1872 | switch (ctrl->bRequest) { |
1873 | case USB_REQ_SET_ADDRESS: |
1874 | stall = usb3_std_req_set_address(usb3, ctrl); |
1875 | ret = true; |
1876 | break; |
1877 | case USB_REQ_GET_STATUS: |
1878 | stall = usb3_std_req_get_status(usb3, ctrl); |
1879 | ret = true; |
1880 | break; |
1881 | case USB_REQ_CLEAR_FEATURE: |
1882 | stall = usb3_std_req_feature(usb3, ctrl, set: false); |
1883 | ret = true; |
1884 | break; |
1885 | case USB_REQ_SET_FEATURE: |
1886 | stall = usb3_std_req_feature(usb3, ctrl, set: true); |
1887 | ret = true; |
1888 | break; |
1889 | case USB_REQ_SET_SEL: |
1890 | stall = usb3_std_req_set_sel(usb3, ctrl); |
1891 | ret = true; |
1892 | break; |
1893 | case USB_REQ_SET_ISOCH_DELAY: |
1894 | /* This hardware doesn't support Isochronous xfer */ |
1895 | stall = true; |
1896 | ret = true; |
1897 | break; |
1898 | case USB_REQ_SET_CONFIGURATION: |
1899 | usb3_std_req_set_configuration(usb3, ctrl); |
1900 | break; |
1901 | default: |
1902 | break; |
1903 | } |
1904 | } |
1905 | |
1906 | if (stall) |
1907 | usb3_set_p0_con_stall(usb3); |
1908 | |
1909 | return ret; |
1910 | } |
1911 | |
1912 | static int usb3_p0_con_clear_buffer(struct renesas_usb3 *usb3) |
1913 | { |
1914 | usb3_set_bit(usb3, P0_CON_BCLR, USB3_P0_CON); |
1915 | |
1916 | return usb3_wait(usb3, USB3_P0_CON, P0_CON_BCLR, expected: 0); |
1917 | } |
1918 | |
1919 | static void usb3_irq_epc_pipe0_setup(struct renesas_usb3 *usb3) |
1920 | { |
1921 | struct usb_ctrlrequest ctrl; |
1922 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); |
1923 | |
1924 | /* Call giveback function if previous transfer is not completed */ |
1925 | if (usb3_ep->started) |
1926 | usb3_request_done(usb3_ep, usb3_req: usb3_get_request(usb3_ep), |
1927 | status: -ECONNRESET); |
1928 | |
1929 | usb3_p0_con_clear_buffer(usb3); |
1930 | usb3_get_setup_data(usb3, ctrl: &ctrl); |
1931 | if (!usb3_handle_standard_request(usb3, ctrl: &ctrl)) |
1932 | if (usb3->driver->setup(&usb3->gadget, &ctrl) < 0) |
1933 | usb3_set_p0_con_stall(usb3); |
1934 | } |
1935 | |
1936 | static void usb3_irq_epc_pipe0_bfrdy(struct renesas_usb3 *usb3) |
1937 | { |
1938 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); |
1939 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); |
1940 | |
1941 | if (!usb3_req) |
1942 | return; |
1943 | |
1944 | usb3_p0_xfer(usb3_ep, usb3_req); |
1945 | } |
1946 | |
1947 | static void usb3_irq_epc_pipe0(struct renesas_usb3 *usb3) |
1948 | { |
1949 | u32 p0_int_sta = usb3_read(usb3, USB3_P0_INT_STA); |
1950 | |
1951 | p0_int_sta &= usb3_read(usb3, USB3_P0_INT_ENA); |
1952 | usb3_write(usb3, data: p0_int_sta, USB3_P0_INT_STA); |
1953 | if (p0_int_sta & P0_INT_STSED) |
1954 | usb3_irq_epc_pipe0_status_end(usb3); |
1955 | if (p0_int_sta & P0_INT_SETUP) |
1956 | usb3_irq_epc_pipe0_setup(usb3); |
1957 | if (p0_int_sta & P0_INT_BFRDY) |
1958 | usb3_irq_epc_pipe0_bfrdy(usb3); |
1959 | } |
1960 | |
1961 | static void usb3_request_done_pipen(struct renesas_usb3 *usb3, |
1962 | struct renesas_usb3_ep *usb3_ep, |
1963 | struct renesas_usb3_request *usb3_req, |
1964 | int status) |
1965 | { |
1966 | unsigned long flags; |
1967 | |
1968 | spin_lock_irqsave(&usb3->lock, flags); |
1969 | if (usb3_pn_change(usb3, num: usb3_ep->num)) |
1970 | usb3_pn_stop(usb3); |
1971 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
1972 | |
1973 | usb3_disable_pipe_irq(usb3, num: usb3_ep->num); |
1974 | usb3_request_done(usb3_ep, usb3_req, status); |
1975 | |
1976 | /* get next usb3_req */ |
1977 | usb3_req = usb3_get_request(usb3_ep); |
1978 | if (usb3_req) |
1979 | usb3_start_pipen(usb3_ep, usb3_req); |
1980 | } |
1981 | |
1982 | static void usb3_irq_epc_pipen_lsttr(struct renesas_usb3 *usb3, int num) |
1983 | { |
1984 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num); |
1985 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); |
1986 | |
1987 | if (!usb3_req) |
1988 | return; |
1989 | |
1990 | if (usb3_ep->dir_in) { |
1991 | dev_dbg(usb3_to_dev(usb3), "%s: len = %u, actual = %u\n" , |
1992 | __func__, usb3_req->req.length, usb3_req->req.actual); |
1993 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status: 0); |
1994 | } |
1995 | } |
1996 | |
1997 | static void usb3_irq_epc_pipen_bfrdy(struct renesas_usb3 *usb3, int num) |
1998 | { |
1999 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num); |
2000 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); |
2001 | bool done = false; |
2002 | |
2003 | if (!usb3_req) |
2004 | return; |
2005 | |
2006 | spin_lock(lock: &usb3->lock); |
2007 | if (usb3_pn_change(usb3, num)) |
2008 | goto out; |
2009 | |
2010 | if (usb3_ep->dir_in) { |
2011 | /* Do not stop the IN pipe here to detect LSTTR interrupt */ |
2012 | if (!usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE)) |
2013 | usb3_clear_bit(usb3, PN_INT_BFRDY, USB3_PN_INT_ENA); |
2014 | } else { |
2015 | if (!usb3_read_pipe(usb3_ep, usb3_req, USB3_PN_READ)) |
2016 | done = true; |
2017 | } |
2018 | |
2019 | out: |
2020 | /* need to unlock because usb3_request_done_pipen() locks it */ |
2021 | spin_unlock(lock: &usb3->lock); |
2022 | |
2023 | if (done) |
2024 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status: 0); |
2025 | } |
2026 | |
2027 | static void usb3_irq_epc_pipen(struct renesas_usb3 *usb3, int num) |
2028 | { |
2029 | u32 pn_int_sta; |
2030 | |
2031 | spin_lock(lock: &usb3->lock); |
2032 | if (usb3_pn_change(usb3, num) < 0) { |
2033 | spin_unlock(lock: &usb3->lock); |
2034 | return; |
2035 | } |
2036 | |
2037 | pn_int_sta = usb3_read(usb3, USB3_PN_INT_STA); |
2038 | pn_int_sta &= usb3_read(usb3, USB3_PN_INT_ENA); |
2039 | usb3_write(usb3, data: pn_int_sta, USB3_PN_INT_STA); |
2040 | spin_unlock(lock: &usb3->lock); |
2041 | if (pn_int_sta & PN_INT_LSTTR) |
2042 | usb3_irq_epc_pipen_lsttr(usb3, num); |
2043 | if (pn_int_sta & PN_INT_BFRDY) |
2044 | usb3_irq_epc_pipen_bfrdy(usb3, num); |
2045 | } |
2046 | |
2047 | static void usb3_irq_epc_int_2(struct renesas_usb3 *usb3, u32 int_sta_2) |
2048 | { |
2049 | int i; |
2050 | |
2051 | for (i = 0; i < usb3->num_usb3_eps; i++) { |
2052 | if (int_sta_2 & USB_INT_2_PIPE(i)) { |
2053 | if (!i) |
2054 | usb3_irq_epc_pipe0(usb3); |
2055 | else |
2056 | usb3_irq_epc_pipen(usb3, num: i); |
2057 | } |
2058 | } |
2059 | } |
2060 | |
2061 | static void usb3_irq_idmon_change(struct renesas_usb3 *usb3) |
2062 | { |
2063 | usb3_check_id(usb3); |
2064 | } |
2065 | |
2066 | static void usb3_irq_otg_int(struct renesas_usb3 *usb3) |
2067 | { |
2068 | u32 otg_int_sta = usb3_drd_read(usb3, USB3_USB_OTG_INT_STA(usb3)); |
2069 | |
2070 | otg_int_sta &= usb3_drd_read(usb3, USB3_USB_OTG_INT_ENA(usb3)); |
2071 | if (otg_int_sta) |
2072 | usb3_drd_write(usb3, data: otg_int_sta, USB3_USB_OTG_INT_STA(usb3)); |
2073 | |
2074 | if (otg_int_sta & USB_OTG_IDMON(usb3)) |
2075 | usb3_irq_idmon_change(usb3); |
2076 | } |
2077 | |
2078 | static void usb3_irq_epc(struct renesas_usb3 *usb3) |
2079 | { |
2080 | u32 int_sta_1 = usb3_read(usb3, USB3_USB_INT_STA_1); |
2081 | u32 int_sta_2 = usb3_read(usb3, USB3_USB_INT_STA_2); |
2082 | |
2083 | int_sta_1 &= usb3_read(usb3, USB3_USB_INT_ENA_1); |
2084 | if (int_sta_1) { |
2085 | usb3_write(usb3, data: int_sta_1, USB3_USB_INT_STA_1); |
2086 | usb3_irq_epc_int_1(usb3, int_sta_1); |
2087 | } |
2088 | |
2089 | int_sta_2 &= usb3_read(usb3, USB3_USB_INT_ENA_2); |
2090 | if (int_sta_2) |
2091 | usb3_irq_epc_int_2(usb3, int_sta_2); |
2092 | |
2093 | if (!usb3->is_rzv2m) |
2094 | usb3_irq_otg_int(usb3); |
2095 | } |
2096 | |
2097 | static void usb3_irq_dma_int(struct renesas_usb3 *usb3, u32 dma_sta) |
2098 | { |
2099 | struct renesas_usb3_ep *usb3_ep; |
2100 | struct renesas_usb3_request *usb3_req; |
2101 | int i, status; |
2102 | |
2103 | for (i = 0; i < usb3->num_usb3_eps; i++) { |
2104 | if (!(dma_sta & DMA_INT(i))) |
2105 | continue; |
2106 | |
2107 | usb3_ep = usb3_get_ep(usb3, i); |
2108 | if (!(usb3_read(usb3, USB3_AXI_INT_STA) & |
2109 | AXI_INT_PRDEN_CLR_STA(usb3_ep->dma->num))) |
2110 | continue; |
2111 | |
2112 | usb3_req = usb3_get_request(usb3_ep); |
2113 | status = usb3_dma_try_stop(usb3_ep, usb3_req); |
2114 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status); |
2115 | } |
2116 | } |
2117 | |
2118 | static void usb3_irq_dma(struct renesas_usb3 *usb3) |
2119 | { |
2120 | u32 dma_sta = usb3_read(usb3, USB3_DMA_INT_STA); |
2121 | |
2122 | dma_sta &= usb3_read(usb3, USB3_DMA_INT_ENA); |
2123 | if (dma_sta) { |
2124 | usb3_write(usb3, data: dma_sta, USB3_DMA_INT_STA); |
2125 | usb3_irq_dma_int(usb3, dma_sta); |
2126 | } |
2127 | } |
2128 | |
2129 | static irqreturn_t renesas_usb3_irq(int irq, void *_usb3) |
2130 | { |
2131 | struct renesas_usb3 *usb3 = _usb3; |
2132 | irqreturn_t ret = IRQ_NONE; |
2133 | u32 axi_int_sta = usb3_read(usb3, USB3_AXI_INT_STA); |
2134 | |
2135 | if (axi_int_sta & AXI_INT_DMAINT) { |
2136 | usb3_irq_dma(usb3); |
2137 | ret = IRQ_HANDLED; |
2138 | } |
2139 | |
2140 | if (axi_int_sta & AXI_INT_EPCINT) { |
2141 | usb3_irq_epc(usb3); |
2142 | ret = IRQ_HANDLED; |
2143 | } |
2144 | |
2145 | return ret; |
2146 | } |
2147 | |
2148 | static irqreturn_t renesas_usb3_otg_irq(int irq, void *_usb3) |
2149 | { |
2150 | struct renesas_usb3 *usb3 = _usb3; |
2151 | |
2152 | usb3_irq_otg_int(usb3); |
2153 | |
2154 | return IRQ_HANDLED; |
2155 | } |
2156 | |
2157 | static void usb3_write_pn_mod(struct renesas_usb3_ep *usb3_ep, |
2158 | const struct usb_endpoint_descriptor *desc) |
2159 | { |
2160 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
2161 | u32 val = 0; |
2162 | |
2163 | val |= usb3_ep->dir_in ? PN_MOD_DIR : 0; |
2164 | val |= PN_MOD_TYPE(usb_endpoint_type(desc)); |
2165 | val |= PN_MOD_EPNUM(usb_endpoint_num(desc)); |
2166 | usb3_write(usb3, data: val, USB3_PN_MOD); |
2167 | } |
2168 | |
2169 | static u32 usb3_calc_ramarea(int ram_size) |
2170 | { |
2171 | WARN_ON(ram_size > SZ_16K); |
2172 | |
2173 | if (ram_size <= SZ_1K) |
2174 | return PN_RAMMAP_RAMAREA_1KB; |
2175 | else if (ram_size <= SZ_2K) |
2176 | return PN_RAMMAP_RAMAREA_2KB; |
2177 | else if (ram_size <= SZ_4K) |
2178 | return PN_RAMMAP_RAMAREA_4KB; |
2179 | else if (ram_size <= SZ_8K) |
2180 | return PN_RAMMAP_RAMAREA_8KB; |
2181 | else |
2182 | return PN_RAMMAP_RAMAREA_16KB; |
2183 | } |
2184 | |
2185 | static u32 usb3_calc_rammap_val(struct renesas_usb3_ep *usb3_ep, |
2186 | const struct usb_endpoint_descriptor *desc) |
2187 | { |
2188 | int i; |
2189 | static const u32 max_packet_array[] = {8, 16, 32, 64, 512}; |
2190 | u32 mpkt = PN_RAMMAP_MPKT(1024); |
2191 | |
2192 | for (i = 0; i < ARRAY_SIZE(max_packet_array); i++) { |
2193 | if (usb_endpoint_maxp(epd: desc) <= max_packet_array[i]) |
2194 | mpkt = PN_RAMMAP_MPKT(max_packet_array[i]); |
2195 | } |
2196 | |
2197 | return usb3_ep->rammap_val | mpkt; |
2198 | } |
2199 | |
2200 | static int usb3_enable_pipe_n(struct renesas_usb3_ep *usb3_ep, |
2201 | const struct usb_endpoint_descriptor *desc) |
2202 | { |
2203 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
2204 | unsigned long flags; |
2205 | |
2206 | usb3_ep->dir_in = usb_endpoint_dir_in(epd: desc); |
2207 | |
2208 | spin_lock_irqsave(&usb3->lock, flags); |
2209 | if (!usb3_pn_change(usb3, num: usb3_ep->num)) { |
2210 | usb3_write_pn_mod(usb3_ep, desc); |
2211 | usb3_write(usb3, data: usb3_calc_rammap_val(usb3_ep, desc), |
2212 | USB3_PN_RAMMAP); |
2213 | usb3_pn_con_clear(usb3); |
2214 | usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON); |
2215 | } |
2216 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
2217 | |
2218 | return 0; |
2219 | } |
2220 | |
2221 | static int usb3_disable_pipe_n(struct renesas_usb3_ep *usb3_ep) |
2222 | { |
2223 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
2224 | unsigned long flags; |
2225 | |
2226 | usb3_ep->halt = false; |
2227 | |
2228 | spin_lock_irqsave(&usb3->lock, flags); |
2229 | if (!usb3_pn_change(usb3, num: usb3_ep->num)) { |
2230 | usb3_write(usb3, data: 0, USB3_PN_INT_ENA); |
2231 | usb3_write(usb3, data: 0, USB3_PN_RAMMAP); |
2232 | usb3_clear_bit(usb3, PN_CON_EN, USB3_PN_CON); |
2233 | } |
2234 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
2235 | |
2236 | return 0; |
2237 | } |
2238 | |
2239 | /*------- usb_ep_ops -----------------------------------------------------*/ |
2240 | static int renesas_usb3_ep_enable(struct usb_ep *_ep, |
2241 | const struct usb_endpoint_descriptor *desc) |
2242 | { |
2243 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); |
2244 | |
2245 | return usb3_enable_pipe_n(usb3_ep, desc); |
2246 | } |
2247 | |
2248 | static int renesas_usb3_ep_disable(struct usb_ep *_ep) |
2249 | { |
2250 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); |
2251 | struct renesas_usb3_request *usb3_req; |
2252 | |
2253 | do { |
2254 | usb3_req = usb3_get_request(usb3_ep); |
2255 | if (!usb3_req) |
2256 | break; |
2257 | usb3_dma_try_stop(usb3_ep, usb3_req); |
2258 | usb3_request_done(usb3_ep, usb3_req, status: -ESHUTDOWN); |
2259 | } while (1); |
2260 | |
2261 | return usb3_disable_pipe_n(usb3_ep); |
2262 | } |
2263 | |
2264 | static struct usb_request *__renesas_usb3_ep_alloc_request(gfp_t gfp_flags) |
2265 | { |
2266 | struct renesas_usb3_request *usb3_req; |
2267 | |
2268 | usb3_req = kzalloc(size: sizeof(struct renesas_usb3_request), flags: gfp_flags); |
2269 | if (!usb3_req) |
2270 | return NULL; |
2271 | |
2272 | INIT_LIST_HEAD(list: &usb3_req->queue); |
2273 | |
2274 | return &usb3_req->req; |
2275 | } |
2276 | |
2277 | static void __renesas_usb3_ep_free_request(struct usb_request *_req) |
2278 | { |
2279 | struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req); |
2280 | |
2281 | kfree(objp: usb3_req); |
2282 | } |
2283 | |
2284 | static struct usb_request *renesas_usb3_ep_alloc_request(struct usb_ep *_ep, |
2285 | gfp_t gfp_flags) |
2286 | { |
2287 | return __renesas_usb3_ep_alloc_request(gfp_flags); |
2288 | } |
2289 | |
2290 | static void renesas_usb3_ep_free_request(struct usb_ep *_ep, |
2291 | struct usb_request *_req) |
2292 | { |
2293 | __renesas_usb3_ep_free_request(_req); |
2294 | } |
2295 | |
2296 | static int renesas_usb3_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) |
2297 | { |
2298 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); |
2299 | struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req); |
2300 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
2301 | |
2302 | dev_dbg(usb3_to_dev(usb3), "ep_dequeue: ep%2d, %u\n" , usb3_ep->num, |
2303 | _req->length); |
2304 | |
2305 | usb3_dma_try_stop(usb3_ep, usb3_req); |
2306 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status: -ECONNRESET); |
2307 | |
2308 | return 0; |
2309 | } |
2310 | |
2311 | static int renesas_usb3_ep_set_halt(struct usb_ep *_ep, int value) |
2312 | { |
2313 | return usb3_set_halt(usb_ep_to_usb3_ep(_ep), halt: !!value, is_clear_feature: false); |
2314 | } |
2315 | |
2316 | static int renesas_usb3_ep_set_wedge(struct usb_ep *_ep) |
2317 | { |
2318 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); |
2319 | |
2320 | usb3_ep->wedge = true; |
2321 | return usb3_set_halt(usb3_ep, halt: true, is_clear_feature: false); |
2322 | } |
2323 | |
2324 | static void renesas_usb3_ep_fifo_flush(struct usb_ep *_ep) |
2325 | { |
2326 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); |
2327 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); |
2328 | unsigned long flags; |
2329 | |
2330 | if (usb3_ep->num) { |
2331 | spin_lock_irqsave(&usb3->lock, flags); |
2332 | if (!usb3_pn_change(usb3, num: usb3_ep->num)) { |
2333 | usb3_pn_con_clear(usb3); |
2334 | usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON); |
2335 | } |
2336 | spin_unlock_irqrestore(lock: &usb3->lock, flags); |
2337 | } else { |
2338 | usb3_p0_con_clear_buffer(usb3); |
2339 | } |
2340 | } |
2341 | |
2342 | static const struct usb_ep_ops renesas_usb3_ep_ops = { |
2343 | .enable = renesas_usb3_ep_enable, |
2344 | .disable = renesas_usb3_ep_disable, |
2345 | |
2346 | .alloc_request = renesas_usb3_ep_alloc_request, |
2347 | .free_request = renesas_usb3_ep_free_request, |
2348 | |
2349 | .queue = renesas_usb3_ep_queue, |
2350 | .dequeue = renesas_usb3_ep_dequeue, |
2351 | |
2352 | .set_halt = renesas_usb3_ep_set_halt, |
2353 | .set_wedge = renesas_usb3_ep_set_wedge, |
2354 | .fifo_flush = renesas_usb3_ep_fifo_flush, |
2355 | }; |
2356 | |
2357 | /*------- usb_gadget_ops -------------------------------------------------*/ |
2358 | static int renesas_usb3_start(struct usb_gadget *gadget, |
2359 | struct usb_gadget_driver *driver) |
2360 | { |
2361 | struct renesas_usb3 *usb3; |
2362 | |
2363 | if (!driver || driver->max_speed < USB_SPEED_FULL || |
2364 | !driver->setup) |
2365 | return -EINVAL; |
2366 | |
2367 | usb3 = gadget_to_renesas_usb3(gadget); |
2368 | |
2369 | if (usb3->is_rzv2m && usb3_is_a_device(usb3)) |
2370 | return -EBUSY; |
2371 | |
2372 | /* hook up the driver */ |
2373 | usb3->driver = driver; |
2374 | |
2375 | if (usb3->phy) |
2376 | phy_init(phy: usb3->phy); |
2377 | |
2378 | pm_runtime_get_sync(usb3_to_dev(usb3)); |
2379 | |
2380 | /* Peripheral Reset */ |
2381 | if (usb3->is_rzv2m) |
2382 | rzv2m_usb3drd_reset(usb3_to_dev(usb3)->parent, host: false); |
2383 | |
2384 | renesas_usb3_init_controller(usb3); |
2385 | |
2386 | return 0; |
2387 | } |
2388 | |
2389 | static int renesas_usb3_stop(struct usb_gadget *gadget) |
2390 | { |
2391 | struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget); |
2392 | |
2393 | usb3->softconnect = false; |
2394 | usb3->gadget.speed = USB_SPEED_UNKNOWN; |
2395 | usb3->driver = NULL; |
2396 | if (usb3->is_rzv2m) |
2397 | rzv2m_usb3drd_reset(usb3_to_dev(usb3)->parent, host: false); |
2398 | |
2399 | renesas_usb3_stop_controller(usb3); |
2400 | if (usb3->phy) |
2401 | phy_exit(phy: usb3->phy); |
2402 | |
2403 | pm_runtime_put(usb3_to_dev(usb3)); |
2404 | |
2405 | return 0; |
2406 | } |
2407 | |
2408 | static int renesas_usb3_get_frame(struct usb_gadget *_gadget) |
2409 | { |
2410 | return -EOPNOTSUPP; |
2411 | } |
2412 | |
2413 | static int renesas_usb3_pullup(struct usb_gadget *gadget, int is_on) |
2414 | { |
2415 | struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget); |
2416 | |
2417 | usb3->softconnect = !!is_on; |
2418 | |
2419 | return 0; |
2420 | } |
2421 | |
2422 | static int renesas_usb3_set_selfpowered(struct usb_gadget *gadget, int is_self) |
2423 | { |
2424 | gadget->is_selfpowered = !!is_self; |
2425 | |
2426 | return 0; |
2427 | } |
2428 | |
2429 | static const struct usb_gadget_ops renesas_usb3_gadget_ops = { |
2430 | .get_frame = renesas_usb3_get_frame, |
2431 | .udc_start = renesas_usb3_start, |
2432 | .udc_stop = renesas_usb3_stop, |
2433 | .pullup = renesas_usb3_pullup, |
2434 | .set_selfpowered = renesas_usb3_set_selfpowered, |
2435 | }; |
2436 | |
2437 | static enum usb_role renesas_usb3_role_switch_get(struct usb_role_switch *sw) |
2438 | { |
2439 | struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw); |
2440 | enum usb_role cur_role; |
2441 | |
2442 | pm_runtime_get_sync(usb3_to_dev(usb3)); |
2443 | cur_role = usb3_is_host(usb3) ? USB_ROLE_HOST : USB_ROLE_DEVICE; |
2444 | pm_runtime_put(usb3_to_dev(usb3)); |
2445 | |
2446 | return cur_role; |
2447 | } |
2448 | |
2449 | static void handle_ext_role_switch_states(struct device *dev, |
2450 | enum usb_role role) |
2451 | { |
2452 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); |
2453 | struct device *host = usb3->host_dev; |
2454 | enum usb_role cur_role = renesas_usb3_role_switch_get(sw: usb3->role_sw); |
2455 | |
2456 | switch (role) { |
2457 | case USB_ROLE_NONE: |
2458 | usb3->connection_state = USB_ROLE_NONE; |
2459 | if (!usb3->is_rzv2m && cur_role == USB_ROLE_HOST) |
2460 | device_release_driver(dev: host); |
2461 | if (usb3->driver) { |
2462 | if (usb3->is_rzv2m) |
2463 | rzv2m_usb3drd_reset(dev: dev->parent, host: false); |
2464 | usb3_disconnect(usb3); |
2465 | } |
2466 | usb3_vbus_out(usb3, enable: false); |
2467 | |
2468 | if (usb3->is_rzv2m) { |
2469 | rzv2m_usb3drd_reset(dev: dev->parent, host: true); |
2470 | device_release_driver(dev: host); |
2471 | } |
2472 | break; |
2473 | case USB_ROLE_DEVICE: |
2474 | if (usb3->connection_state == USB_ROLE_NONE) { |
2475 | usb3->connection_state = USB_ROLE_DEVICE; |
2476 | usb3_set_mode(usb3, host: false); |
2477 | if (usb3->driver) { |
2478 | if (usb3->is_rzv2m) |
2479 | renesas_usb3_init_controller(usb3); |
2480 | usb3_connect(usb3); |
2481 | } |
2482 | } else if (cur_role == USB_ROLE_HOST) { |
2483 | device_release_driver(dev: host); |
2484 | usb3_set_mode(usb3, host: false); |
2485 | if (usb3->driver) |
2486 | usb3_connect(usb3); |
2487 | } |
2488 | usb3_vbus_out(usb3, enable: false); |
2489 | break; |
2490 | case USB_ROLE_HOST: |
2491 | if (usb3->connection_state == USB_ROLE_NONE) { |
2492 | if (usb3->driver) { |
2493 | if (usb3->is_rzv2m) |
2494 | rzv2m_usb3drd_reset(dev: dev->parent, host: false); |
2495 | usb3_disconnect(usb3); |
2496 | } |
2497 | |
2498 | usb3->connection_state = USB_ROLE_HOST; |
2499 | usb3_set_mode(usb3, host: true); |
2500 | usb3_vbus_out(usb3, enable: true); |
2501 | if (device_attach(dev: host) < 0) |
2502 | dev_err(dev, "device_attach(host) failed\n" ); |
2503 | } else if (cur_role == USB_ROLE_DEVICE) { |
2504 | usb3_disconnect(usb3); |
2505 | /* Must set the mode before device_attach of the host */ |
2506 | usb3_set_mode(usb3, host: true); |
2507 | /* This device_attach() might sleep */ |
2508 | if (device_attach(dev: host) < 0) |
2509 | dev_err(dev, "device_attach(host) failed\n" ); |
2510 | } |
2511 | break; |
2512 | default: |
2513 | break; |
2514 | } |
2515 | } |
2516 | |
2517 | static void handle_role_switch_states(struct device *dev, |
2518 | enum usb_role role) |
2519 | { |
2520 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); |
2521 | struct device *host = usb3->host_dev; |
2522 | enum usb_role cur_role = renesas_usb3_role_switch_get(sw: usb3->role_sw); |
2523 | |
2524 | if (cur_role == USB_ROLE_HOST && role == USB_ROLE_DEVICE) { |
2525 | device_release_driver(dev: host); |
2526 | usb3_set_mode(usb3, host: false); |
2527 | } else if (cur_role == USB_ROLE_DEVICE && role == USB_ROLE_HOST) { |
2528 | /* Must set the mode before device_attach of the host */ |
2529 | usb3_set_mode(usb3, host: true); |
2530 | /* This device_attach() might sleep */ |
2531 | if (device_attach(dev: host) < 0) |
2532 | dev_err(dev, "device_attach(host) failed\n" ); |
2533 | } |
2534 | } |
2535 | |
2536 | static int renesas_usb3_role_switch_set(struct usb_role_switch *sw, |
2537 | enum usb_role role) |
2538 | { |
2539 | struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw); |
2540 | |
2541 | pm_runtime_get_sync(usb3_to_dev(usb3)); |
2542 | |
2543 | if (usb3->role_sw_by_connector) |
2544 | handle_ext_role_switch_states(usb3_to_dev(usb3), role); |
2545 | else |
2546 | handle_role_switch_states(usb3_to_dev(usb3), role); |
2547 | |
2548 | pm_runtime_put(usb3_to_dev(usb3)); |
2549 | |
2550 | return 0; |
2551 | } |
2552 | |
2553 | static ssize_t role_store(struct device *dev, struct device_attribute *attr, |
2554 | const char *buf, size_t count) |
2555 | { |
2556 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); |
2557 | bool new_mode_is_host; |
2558 | |
2559 | if (!usb3->driver) |
2560 | return -ENODEV; |
2561 | |
2562 | if (usb3->forced_b_device) |
2563 | return -EBUSY; |
2564 | |
2565 | if (sysfs_streq(s1: buf, s2: "host" )) |
2566 | new_mode_is_host = true; |
2567 | else if (sysfs_streq(s1: buf, s2: "peripheral" )) |
2568 | new_mode_is_host = false; |
2569 | else |
2570 | return -EINVAL; |
2571 | |
2572 | if (new_mode_is_host == usb3_is_host(usb3)) |
2573 | return -EINVAL; |
2574 | |
2575 | usb3_mode_config(usb3, host: new_mode_is_host, a_dev: usb3_is_a_device(usb3)); |
2576 | |
2577 | return count; |
2578 | } |
2579 | |
2580 | static ssize_t role_show(struct device *dev, struct device_attribute *attr, |
2581 | char *buf) |
2582 | { |
2583 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); |
2584 | |
2585 | if (!usb3->driver) |
2586 | return -ENODEV; |
2587 | |
2588 | return sprintf(buf, fmt: "%s\n" , usb3_is_host(usb3) ? "host" : "peripheral" ); |
2589 | } |
2590 | static DEVICE_ATTR_RW(role); |
2591 | |
2592 | static int renesas_usb3_b_device_show(struct seq_file *s, void *unused) |
2593 | { |
2594 | struct renesas_usb3 *usb3 = s->private; |
2595 | |
2596 | seq_printf(m: s, fmt: "%d\n" , usb3->forced_b_device); |
2597 | |
2598 | return 0; |
2599 | } |
2600 | |
2601 | static int renesas_usb3_b_device_open(struct inode *inode, struct file *file) |
2602 | { |
2603 | return single_open(file, renesas_usb3_b_device_show, inode->i_private); |
2604 | } |
2605 | |
2606 | static ssize_t renesas_usb3_b_device_write(struct file *file, |
2607 | const char __user *ubuf, |
2608 | size_t count, loff_t *ppos) |
2609 | { |
2610 | struct seq_file *s = file->private_data; |
2611 | struct renesas_usb3 *usb3 = s->private; |
2612 | char buf[32]; |
2613 | |
2614 | if (!usb3->driver) |
2615 | return -ENODEV; |
2616 | |
2617 | if (copy_from_user(to: &buf, from: ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
2618 | return -EFAULT; |
2619 | |
2620 | usb3->start_to_connect = false; |
2621 | if (usb3->workaround_for_vbus && usb3->forced_b_device && |
2622 | !strncmp(buf, "2" , 1)) |
2623 | usb3->start_to_connect = true; |
2624 | else if (!strncmp(buf, "1" , 1)) |
2625 | usb3->forced_b_device = true; |
2626 | else |
2627 | usb3->forced_b_device = false; |
2628 | |
2629 | if (usb3->workaround_for_vbus) |
2630 | usb3_disconnect(usb3); |
2631 | |
2632 | /* Let this driver call usb3_connect() if needed */ |
2633 | usb3_check_id(usb3); |
2634 | |
2635 | return count; |
2636 | } |
2637 | |
2638 | static const struct file_operations renesas_usb3_b_device_fops = { |
2639 | .open = renesas_usb3_b_device_open, |
2640 | .write = renesas_usb3_b_device_write, |
2641 | .read = seq_read, |
2642 | .llseek = seq_lseek, |
2643 | .release = single_release, |
2644 | }; |
2645 | |
2646 | static void renesas_usb3_debugfs_init(struct renesas_usb3 *usb3, |
2647 | struct device *dev) |
2648 | { |
2649 | usb3->dentry = debugfs_create_dir(name: dev_name(dev), parent: usb_debug_root); |
2650 | |
2651 | debugfs_create_file(name: "b_device" , mode: 0644, parent: usb3->dentry, data: usb3, |
2652 | fops: &renesas_usb3_b_device_fops); |
2653 | } |
2654 | |
2655 | /*------- platform_driver ------------------------------------------------*/ |
2656 | static void renesas_usb3_remove(struct platform_device *pdev) |
2657 | { |
2658 | struct renesas_usb3 *usb3 = platform_get_drvdata(pdev); |
2659 | |
2660 | debugfs_remove_recursive(dentry: usb3->dentry); |
2661 | device_remove_file(dev: &pdev->dev, attr: &dev_attr_role); |
2662 | |
2663 | cancel_work_sync(work: &usb3->role_work); |
2664 | usb_role_switch_unregister(sw: usb3->role_sw); |
2665 | |
2666 | usb_del_gadget_udc(gadget: &usb3->gadget); |
2667 | reset_control_assert(rstc: usb3->usbp_rstc); |
2668 | renesas_usb3_dma_free_prd(usb3, dev: &pdev->dev); |
2669 | |
2670 | __renesas_usb3_ep_free_request(req: usb3->ep0_req); |
2671 | pm_runtime_disable(dev: &pdev->dev); |
2672 | } |
2673 | |
2674 | static int renesas_usb3_init_ep(struct renesas_usb3 *usb3, struct device *dev, |
2675 | const struct renesas_usb3_priv *priv) |
2676 | { |
2677 | struct renesas_usb3_ep *usb3_ep; |
2678 | int i; |
2679 | |
2680 | /* calculate num_usb3_eps from renesas_usb3_priv */ |
2681 | usb3->num_usb3_eps = priv->ramsize_per_ramif * priv->num_ramif * 2 / |
2682 | priv->ramsize_per_pipe + 1; |
2683 | |
2684 | if (usb3->num_usb3_eps > USB3_MAX_NUM_PIPES(usb3)) |
2685 | usb3->num_usb3_eps = USB3_MAX_NUM_PIPES(usb3); |
2686 | |
2687 | usb3->usb3_ep = devm_kcalloc(dev, |
2688 | n: usb3->num_usb3_eps, size: sizeof(*usb3_ep), |
2689 | GFP_KERNEL); |
2690 | if (!usb3->usb3_ep) |
2691 | return -ENOMEM; |
2692 | |
2693 | dev_dbg(dev, "%s: num_usb3_eps = %d\n" , __func__, usb3->num_usb3_eps); |
2694 | /* |
2695 | * This driver prepares pipes as follows: |
2696 | * - odd pipes = IN pipe |
2697 | * - even pipes = OUT pipe (except pipe 0) |
2698 | */ |
2699 | usb3_for_each_ep(usb3_ep, usb3, i) { |
2700 | snprintf(buf: usb3_ep->ep_name, size: sizeof(usb3_ep->ep_name), fmt: "ep%d" , i); |
2701 | usb3_ep->usb3 = usb3; |
2702 | usb3_ep->num = i; |
2703 | usb3_ep->ep.name = usb3_ep->ep_name; |
2704 | usb3_ep->ep.ops = &renesas_usb3_ep_ops; |
2705 | INIT_LIST_HEAD(list: &usb3_ep->queue); |
2706 | INIT_LIST_HEAD(list: &usb3_ep->ep.ep_list); |
2707 | if (!i) { |
2708 | /* for control pipe */ |
2709 | usb3->gadget.ep0 = &usb3_ep->ep; |
2710 | usb_ep_set_maxpacket_limit(ep: &usb3_ep->ep, |
2711 | USB3_EP0_SS_MAX_PACKET_SIZE); |
2712 | usb3_ep->ep.caps.type_control = true; |
2713 | usb3_ep->ep.caps.dir_in = true; |
2714 | usb3_ep->ep.caps.dir_out = true; |
2715 | continue; |
2716 | } |
2717 | |
2718 | /* for bulk or interrupt pipe */ |
2719 | usb_ep_set_maxpacket_limit(ep: &usb3_ep->ep, maxpacket_limit: ~0); |
2720 | list_add_tail(new: &usb3_ep->ep.ep_list, head: &usb3->gadget.ep_list); |
2721 | usb3_ep->ep.caps.type_bulk = true; |
2722 | usb3_ep->ep.caps.type_int = true; |
2723 | if (i & 1) |
2724 | usb3_ep->ep.caps.dir_in = true; |
2725 | else |
2726 | usb3_ep->ep.caps.dir_out = true; |
2727 | } |
2728 | |
2729 | return 0; |
2730 | } |
2731 | |
2732 | static void renesas_usb3_init_ram(struct renesas_usb3 *usb3, struct device *dev, |
2733 | const struct renesas_usb3_priv *priv) |
2734 | { |
2735 | struct renesas_usb3_ep *usb3_ep; |
2736 | int i; |
2737 | u32 ramif[2], basead[2]; /* index 0 = for IN pipes */ |
2738 | u32 *cur_ramif, *cur_basead; |
2739 | u32 val; |
2740 | |
2741 | memset(ramif, 0, sizeof(ramif)); |
2742 | memset(basead, 0, sizeof(basead)); |
2743 | |
2744 | /* |
2745 | * This driver prepares pipes as follows: |
2746 | * - all pipes = the same size as "ramsize_per_pipe" |
2747 | * Please refer to the "Method of Specifying RAM Mapping" |
2748 | */ |
2749 | usb3_for_each_ep(usb3_ep, usb3, i) { |
2750 | if (!i) |
2751 | continue; /* out of scope if ep num = 0 */ |
2752 | if (usb3_ep->ep.caps.dir_in) { |
2753 | cur_ramif = &ramif[0]; |
2754 | cur_basead = &basead[0]; |
2755 | } else { |
2756 | cur_ramif = &ramif[1]; |
2757 | cur_basead = &basead[1]; |
2758 | } |
2759 | |
2760 | if (*cur_basead > priv->ramsize_per_ramif) |
2761 | continue; /* out of memory for IN or OUT pipe */ |
2762 | |
2763 | /* calculate rammap_val */ |
2764 | val = PN_RAMMAP_RAMIF(*cur_ramif); |
2765 | val |= usb3_calc_ramarea(ram_size: priv->ramsize_per_pipe); |
2766 | val |= PN_RAMMAP_BASEAD(*cur_basead); |
2767 | usb3_ep->rammap_val = val; |
2768 | |
2769 | dev_dbg(dev, "ep%2d: val = %08x, ramif = %d, base = %x\n" , |
2770 | i, val, *cur_ramif, *cur_basead); |
2771 | |
2772 | /* update current ramif */ |
2773 | if (*cur_ramif + 1 == priv->num_ramif) { |
2774 | *cur_ramif = 0; |
2775 | *cur_basead += priv->ramsize_per_pipe; |
2776 | } else { |
2777 | (*cur_ramif)++; |
2778 | } |
2779 | } |
2780 | } |
2781 | |
2782 | static const struct renesas_usb3_priv renesas_usb3_priv_gen3 = { |
2783 | .ramsize_per_ramif = SZ_16K, |
2784 | .num_ramif = 4, |
2785 | .ramsize_per_pipe = SZ_4K, |
2786 | }; |
2787 | |
2788 | static const struct renesas_usb3_priv renesas_usb3_priv_r8a77990 = { |
2789 | .ramsize_per_ramif = SZ_16K, |
2790 | .num_ramif = 4, |
2791 | .ramsize_per_pipe = SZ_4K, |
2792 | .workaround_for_vbus = true, |
2793 | }; |
2794 | |
2795 | static const struct renesas_usb3_priv renesas_usb3_priv_rzv2m = { |
2796 | .ramsize_per_ramif = SZ_16K, |
2797 | .num_ramif = 1, |
2798 | .ramsize_per_pipe = SZ_4K, |
2799 | .is_rzv2m = true, |
2800 | }; |
2801 | |
2802 | static const struct of_device_id usb3_of_match[] = { |
2803 | { |
2804 | .compatible = "renesas,r8a774c0-usb3-peri" , |
2805 | .data = &renesas_usb3_priv_r8a77990, |
2806 | }, { |
2807 | .compatible = "renesas,r8a7795-usb3-peri" , |
2808 | .data = &renesas_usb3_priv_gen3, |
2809 | }, { |
2810 | .compatible = "renesas,r8a77990-usb3-peri" , |
2811 | .data = &renesas_usb3_priv_r8a77990, |
2812 | }, { |
2813 | .compatible = "renesas,rzv2m-usb3-peri" , |
2814 | .data = &renesas_usb3_priv_rzv2m, |
2815 | }, { |
2816 | .compatible = "renesas,rcar-gen3-usb3-peri" , |
2817 | .data = &renesas_usb3_priv_gen3, |
2818 | }, |
2819 | { }, |
2820 | }; |
2821 | MODULE_DEVICE_TABLE(of, usb3_of_match); |
2822 | |
2823 | static const unsigned int renesas_usb3_cable[] = { |
2824 | EXTCON_USB, |
2825 | EXTCON_USB_HOST, |
2826 | EXTCON_NONE, |
2827 | }; |
2828 | |
2829 | static struct usb_role_switch_desc renesas_usb3_role_switch_desc = { |
2830 | .set = renesas_usb3_role_switch_set, |
2831 | .get = renesas_usb3_role_switch_get, |
2832 | .allow_userspace_control = true, |
2833 | }; |
2834 | |
2835 | static int renesas_usb3_probe(struct platform_device *pdev) |
2836 | { |
2837 | struct renesas_usb3 *usb3; |
2838 | int irq, ret; |
2839 | const struct renesas_usb3_priv *priv; |
2840 | |
2841 | priv = of_device_get_match_data(dev: &pdev->dev); |
2842 | |
2843 | irq = platform_get_irq(pdev, 0); |
2844 | if (irq < 0) |
2845 | return irq; |
2846 | |
2847 | usb3 = devm_kzalloc(dev: &pdev->dev, size: sizeof(*usb3), GFP_KERNEL); |
2848 | if (!usb3) |
2849 | return -ENOMEM; |
2850 | |
2851 | usb3->is_rzv2m = priv->is_rzv2m; |
2852 | |
2853 | usb3->reg = devm_platform_ioremap_resource(pdev, index: 0); |
2854 | if (IS_ERR(ptr: usb3->reg)) |
2855 | return PTR_ERR(ptr: usb3->reg); |
2856 | |
2857 | platform_set_drvdata(pdev, data: usb3); |
2858 | spin_lock_init(&usb3->lock); |
2859 | |
2860 | usb3->gadget.ops = &renesas_usb3_gadget_ops; |
2861 | usb3->gadget.name = udc_name; |
2862 | usb3->gadget.max_speed = USB_SPEED_SUPER; |
2863 | INIT_LIST_HEAD(list: &usb3->gadget.ep_list); |
2864 | ret = renesas_usb3_init_ep(usb3, dev: &pdev->dev, priv); |
2865 | if (ret < 0) |
2866 | return ret; |
2867 | renesas_usb3_init_ram(usb3, dev: &pdev->dev, priv); |
2868 | |
2869 | ret = devm_request_irq(dev: &pdev->dev, irq, handler: renesas_usb3_irq, irqflags: 0, |
2870 | devname: dev_name(dev: &pdev->dev), dev_id: usb3); |
2871 | if (ret < 0) |
2872 | return ret; |
2873 | |
2874 | if (usb3->is_rzv2m) { |
2875 | struct rzv2m_usb3drd *ddata = dev_get_drvdata(dev: pdev->dev.parent); |
2876 | |
2877 | usb3->drd_reg = ddata->reg; |
2878 | ret = devm_request_irq(dev: &pdev->dev, irq: ddata->drd_irq, |
2879 | handler: renesas_usb3_otg_irq, irqflags: 0, |
2880 | devname: dev_name(dev: &pdev->dev), dev_id: usb3); |
2881 | if (ret < 0) |
2882 | return ret; |
2883 | } |
2884 | |
2885 | INIT_WORK(&usb3->extcon_work, renesas_usb3_extcon_work); |
2886 | usb3->extcon = devm_extcon_dev_allocate(dev: &pdev->dev, cable: renesas_usb3_cable); |
2887 | if (IS_ERR(ptr: usb3->extcon)) |
2888 | return PTR_ERR(ptr: usb3->extcon); |
2889 | |
2890 | ret = devm_extcon_dev_register(dev: &pdev->dev, edev: usb3->extcon); |
2891 | if (ret < 0) { |
2892 | dev_err(&pdev->dev, "Failed to register extcon\n" ); |
2893 | return ret; |
2894 | } |
2895 | |
2896 | /* for ep0 handling */ |
2897 | usb3->ep0_req = __renesas_usb3_ep_alloc_request(GFP_KERNEL); |
2898 | if (!usb3->ep0_req) |
2899 | return -ENOMEM; |
2900 | |
2901 | ret = renesas_usb3_dma_alloc_prd(usb3, dev: &pdev->dev); |
2902 | if (ret < 0) |
2903 | goto err_alloc_prd; |
2904 | |
2905 | /* |
2906 | * This is optional. So, if this driver cannot get a phy, |
2907 | * this driver will not handle a phy anymore. |
2908 | */ |
2909 | usb3->phy = devm_phy_optional_get(dev: &pdev->dev, string: "usb" ); |
2910 | if (IS_ERR(ptr: usb3->phy)) { |
2911 | ret = PTR_ERR(ptr: usb3->phy); |
2912 | goto err_add_udc; |
2913 | } |
2914 | |
2915 | usb3->usbp_rstc = devm_reset_control_get_optional_shared(dev: &pdev->dev, |
2916 | NULL); |
2917 | if (IS_ERR(ptr: usb3->usbp_rstc)) { |
2918 | ret = PTR_ERR(ptr: usb3->usbp_rstc); |
2919 | goto err_add_udc; |
2920 | } |
2921 | |
2922 | reset_control_deassert(rstc: usb3->usbp_rstc); |
2923 | |
2924 | pm_runtime_enable(dev: &pdev->dev); |
2925 | ret = usb_add_gadget_udc(parent: &pdev->dev, gadget: &usb3->gadget); |
2926 | if (ret < 0) |
2927 | goto err_reset; |
2928 | |
2929 | ret = device_create_file(device: &pdev->dev, entry: &dev_attr_role); |
2930 | if (ret < 0) |
2931 | goto err_dev_create; |
2932 | |
2933 | if (device_property_read_bool(dev: &pdev->dev, propname: "usb-role-switch" )) { |
2934 | usb3->role_sw_by_connector = true; |
2935 | renesas_usb3_role_switch_desc.fwnode = dev_fwnode(&pdev->dev); |
2936 | } |
2937 | |
2938 | renesas_usb3_role_switch_desc.driver_data = usb3; |
2939 | |
2940 | INIT_WORK(&usb3->role_work, renesas_usb3_role_work); |
2941 | usb3->role_sw = usb_role_switch_register(parent: &pdev->dev, |
2942 | desc: &renesas_usb3_role_switch_desc); |
2943 | if (!IS_ERR(ptr: usb3->role_sw)) { |
2944 | usb3->host_dev = usb_of_get_companion_dev(dev: &pdev->dev); |
2945 | if (!usb3->host_dev) { |
2946 | /* If not found, this driver will not use a role sw */ |
2947 | usb_role_switch_unregister(sw: usb3->role_sw); |
2948 | usb3->role_sw = NULL; |
2949 | } |
2950 | } else { |
2951 | usb3->role_sw = NULL; |
2952 | } |
2953 | |
2954 | usb3->workaround_for_vbus = priv->workaround_for_vbus; |
2955 | |
2956 | renesas_usb3_debugfs_init(usb3, dev: &pdev->dev); |
2957 | |
2958 | dev_info(&pdev->dev, "probed%s\n" , usb3->phy ? " with phy" : "" ); |
2959 | |
2960 | return 0; |
2961 | |
2962 | err_dev_create: |
2963 | usb_del_gadget_udc(gadget: &usb3->gadget); |
2964 | |
2965 | err_reset: |
2966 | reset_control_assert(rstc: usb3->usbp_rstc); |
2967 | |
2968 | err_add_udc: |
2969 | renesas_usb3_dma_free_prd(usb3, dev: &pdev->dev); |
2970 | |
2971 | err_alloc_prd: |
2972 | __renesas_usb3_ep_free_request(req: usb3->ep0_req); |
2973 | |
2974 | return ret; |
2975 | } |
2976 | |
2977 | #ifdef CONFIG_PM_SLEEP |
2978 | static int renesas_usb3_suspend(struct device *dev) |
2979 | { |
2980 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); |
2981 | |
2982 | /* Not started */ |
2983 | if (!usb3->driver) |
2984 | return 0; |
2985 | |
2986 | renesas_usb3_stop_controller(usb3); |
2987 | if (usb3->phy) |
2988 | phy_exit(phy: usb3->phy); |
2989 | pm_runtime_put(dev); |
2990 | |
2991 | return 0; |
2992 | } |
2993 | |
2994 | static int renesas_usb3_resume(struct device *dev) |
2995 | { |
2996 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); |
2997 | |
2998 | /* Not started */ |
2999 | if (!usb3->driver) |
3000 | return 0; |
3001 | |
3002 | if (usb3->phy) |
3003 | phy_init(phy: usb3->phy); |
3004 | pm_runtime_get_sync(dev); |
3005 | renesas_usb3_init_controller(usb3); |
3006 | |
3007 | return 0; |
3008 | } |
3009 | #endif |
3010 | |
3011 | static SIMPLE_DEV_PM_OPS(renesas_usb3_pm_ops, renesas_usb3_suspend, |
3012 | renesas_usb3_resume); |
3013 | |
3014 | static struct platform_driver renesas_usb3_driver = { |
3015 | .probe = renesas_usb3_probe, |
3016 | .remove_new = renesas_usb3_remove, |
3017 | .driver = { |
3018 | .name = udc_name, |
3019 | .pm = &renesas_usb3_pm_ops, |
3020 | .of_match_table = usb3_of_match, |
3021 | }, |
3022 | }; |
3023 | module_platform_driver(renesas_usb3_driver); |
3024 | |
3025 | MODULE_DESCRIPTION("Renesas USB3.0 Peripheral driver" ); |
3026 | MODULE_LICENSE("GPL v2" ); |
3027 | MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>" ); |
3028 | MODULE_ALIAS("platform:renesas_usb3" ); |
3029 | |