2 * Renesas USB3.0 Peripheral driver (USB gadget)
4 * Copyright (C) 2015 Renesas Electronics Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
11 #include <linux/delay.h>
12 #include <linux/err.h>
13 #include <linux/interrupt.h>
15 #include <linux/module.h>
16 #include <linux/of_device.h>
17 #include <linux/platform_device.h>
18 #include <linux/pm_runtime.h>
19 #include <linux/sizes.h>
20 #include <linux/slab.h>
21 #include <linux/usb/ch9.h>
22 #include <linux/usb/gadget.h>
24 /* register definitions */
25 #define USB3_AXI_INT_STA 0x008
26 #define USB3_AXI_INT_ENA 0x00c
27 #define USB3_DMA_INT_STA 0x010
28 #define USB3_DMA_INT_ENA 0x014
29 #define USB3_USB_COM_CON 0x200
30 #define USB3_USB20_CON 0x204
31 #define USB3_USB30_CON 0x208
32 #define USB3_USB_STA 0x210
33 #define USB3_DRD_CON 0x218
34 #define USB3_USB_INT_STA_1 0x220
35 #define USB3_USB_INT_STA_2 0x224
36 #define USB3_USB_INT_ENA_1 0x228
37 #define USB3_USB_INT_ENA_2 0x22c
38 #define USB3_STUP_DAT_0 0x230
39 #define USB3_STUP_DAT_1 0x234
40 #define USB3_P0_MOD 0x280
41 #define USB3_P0_CON 0x288
42 #define USB3_P0_STA 0x28c
43 #define USB3_P0_INT_STA 0x290
44 #define USB3_P0_INT_ENA 0x294
45 #define USB3_P0_LNG 0x2a0
46 #define USB3_P0_READ 0x2a4
47 #define USB3_P0_WRITE 0x2a8
48 #define USB3_PIPE_COM 0x2b0
49 #define USB3_PN_MOD 0x2c0
50 #define USB3_PN_RAMMAP 0x2c4
51 #define USB3_PN_CON 0x2c8
52 #define USB3_PN_STA 0x2cc
53 #define USB3_PN_INT_STA 0x2d0
54 #define USB3_PN_INT_ENA 0x2d4
55 #define USB3_PN_LNG 0x2e0
56 #define USB3_PN_READ 0x2e4
57 #define USB3_PN_WRITE 0x2e8
58 #define USB3_SSIFCMD 0x340
60 /* AXI_INT_ENA and AXI_INT_STA */
61 #define AXI_INT_DMAINT BIT(31)
62 #define AXI_INT_EPCINT BIT(30)
65 #define LCLKSEL_LSEL BIT(18)
68 #define USB_COM_CON_CONF BIT(24)
69 #define USB_COM_CON_SPD_MODE BIT(17)
70 #define USB_COM_CON_EP0_EN BIT(16)
71 #define USB_COM_CON_DEV_ADDR_SHIFT 8
72 #define USB_COM_CON_DEV_ADDR_MASK GENMASK(14, USB_COM_CON_DEV_ADDR_SHIFT)
73 #define USB_COM_CON_DEV_ADDR(n) (((n) << USB_COM_CON_DEV_ADDR_SHIFT) & \
74 USB_COM_CON_DEV_ADDR_MASK)
75 #define USB_COM_CON_RX_DETECTION BIT(1)
76 #define USB_COM_CON_PIPE_CLR BIT(0)
79 #define USB20_CON_B2_PUE BIT(31)
80 #define USB20_CON_B2_SUSPEND BIT(24)
81 #define USB20_CON_B2_CONNECT BIT(17)
82 #define USB20_CON_B2_TSTMOD_SHIFT 8
83 #define USB20_CON_B2_TSTMOD_MASK GENMASK(10, USB20_CON_B2_TSTMOD_SHIFT)
84 #define USB20_CON_B2_TSTMOD(n) (((n) << USB20_CON_B2_TSTMOD_SHIFT) & \
85 USB20_CON_B2_TSTMOD_MASK)
86 #define USB20_CON_B2_TSTMOD_EN BIT(0)
89 #define USB30_CON_POW_SEL_SHIFT 24
90 #define USB30_CON_POW_SEL_MASK GENMASK(26, USB30_CON_POW_SEL_SHIFT)
91 #define USB30_CON_POW_SEL_IN_U3 BIT(26)
92 #define USB30_CON_POW_SEL_IN_DISCON 0
93 #define USB30_CON_POW_SEL_P2_TO_P0 BIT(25)
94 #define USB30_CON_POW_SEL_P0_TO_P3 BIT(24)
95 #define USB30_CON_POW_SEL_P0_TO_P2 0
96 #define USB30_CON_B3_PLLWAKE BIT(23)
97 #define USB30_CON_B3_CONNECT BIT(17)
98 #define USB30_CON_B3_HOTRST_CMP BIT(1)
101 #define USB_STA_SPEED_MASK (BIT(2) | BIT(1))
102 #define USB_STA_SPEED_HS BIT(2)
103 #define USB_STA_SPEED_FS BIT(1)
104 #define USB_STA_SPEED_SS 0
105 #define USB_STA_VBUS_STA BIT(0)
108 #define DRD_CON_PERI_CON BIT(24)
109 #define DRD_CON_VBOUT BIT(0)
111 /* USB_INT_ENA_1 and USB_INT_STA_1 */
112 #define USB_INT_1_B3_PLLWKUP BIT(31)
113 #define USB_INT_1_B3_LUPSUCS BIT(30)
114 #define USB_INT_1_B3_DISABLE BIT(27)
115 #define USB_INT_1_B3_WRMRST BIT(21)
116 #define USB_INT_1_B3_HOTRST BIT(20)
117 #define USB_INT_1_B2_USBRST BIT(12)
118 #define USB_INT_1_B2_L1SPND BIT(11)
119 #define USB_INT_1_B2_SPND BIT(9)
120 #define USB_INT_1_B2_RSUM BIT(8)
121 #define USB_INT_1_SPEED BIT(1)
122 #define USB_INT_1_VBUS_CNG BIT(0)
124 /* USB_INT_ENA_2 and USB_INT_STA_2 */
125 #define USB_INT_2_PIPE(n) BIT(n)
128 #define P0_MOD_DIR BIT(6)
130 /* P0_CON and PN_CON */
131 #define PX_CON_BYTE_EN_MASK (BIT(10) | BIT(9))
132 #define PX_CON_BYTE_EN_SHIFT 9
133 #define PX_CON_BYTE_EN_BYTES(n) (((n) << PX_CON_BYTE_EN_SHIFT) & \
135 #define PX_CON_SEND BIT(8)
138 #define P0_CON_ST_RES_MASK (BIT(27) | BIT(26))
139 #define P0_CON_ST_RES_FORCE_STALL BIT(27)
140 #define P0_CON_ST_RES_NORMAL BIT(26)
141 #define P0_CON_ST_RES_FORCE_NRDY 0
142 #define P0_CON_OT_RES_MASK (BIT(25) | BIT(24))
143 #define P0_CON_OT_RES_FORCE_STALL BIT(25)
144 #define P0_CON_OT_RES_NORMAL BIT(24)
145 #define P0_CON_OT_RES_FORCE_NRDY 0
146 #define P0_CON_IN_RES_MASK (BIT(17) | BIT(16))
147 #define P0_CON_IN_RES_FORCE_STALL BIT(17)
148 #define P0_CON_IN_RES_NORMAL BIT(16)
149 #define P0_CON_IN_RES_FORCE_NRDY 0
150 #define P0_CON_RES_WEN BIT(7)
151 #define P0_CON_BCLR BIT(1)
153 /* P0_STA and PN_STA */
154 #define PX_STA_BUFSTS BIT(0)
156 /* P0_INT_ENA and P0_INT_STA */
157 #define P0_INT_STSED BIT(18)
158 #define P0_INT_STSST BIT(17)
159 #define P0_INT_SETUP BIT(16)
160 #define P0_INT_RCVNL BIT(8)
161 #define P0_INT_ERDY BIT(7)
162 #define P0_INT_FLOW BIT(6)
163 #define P0_INT_STALL BIT(2)
164 #define P0_INT_NRDY BIT(1)
165 #define P0_INT_BFRDY BIT(0)
166 #define P0_INT_ALL_BITS (P0_INT_STSED | P0_INT_SETUP | P0_INT_BFRDY)
169 #define PN_MOD_DIR BIT(6)
170 #define PN_MOD_TYPE_SHIFT 4
171 #define PN_MOD_TYPE_MASK GENMASK(5, PN_MOD_TYPE_SHIFT)
172 #define PN_MOD_TYPE(n) (((n) << PN_MOD_TYPE_SHIFT) & \
174 #define PN_MOD_EPNUM_MASK GENMASK(3, 0)
175 #define PN_MOD_EPNUM(n) ((n) & PN_MOD_EPNUM_MASK)
178 #define PN_RAMMAP_RAMAREA_SHIFT 29
179 #define PN_RAMMAP_RAMAREA_MASK GENMASK(31, PN_RAMMAP_RAMAREA_SHIFT)
180 #define PN_RAMMAP_RAMAREA_16KB BIT(31)
181 #define PN_RAMMAP_RAMAREA_8KB (BIT(30) | BIT(29))
182 #define PN_RAMMAP_RAMAREA_4KB BIT(30)
183 #define PN_RAMMAP_RAMAREA_2KB BIT(29)
184 #define PN_RAMMAP_RAMAREA_1KB 0
185 #define PN_RAMMAP_MPKT_SHIFT 16
186 #define PN_RAMMAP_MPKT_MASK GENMASK(26, PN_RAMMAP_MPKT_SHIFT)
187 #define PN_RAMMAP_MPKT(n) (((n) << PN_RAMMAP_MPKT_SHIFT) & \
189 #define PN_RAMMAP_RAMIF_SHIFT 14
190 #define PN_RAMMAP_RAMIF_MASK GENMASK(15, PN_RAMMAP_RAMIF_SHIFT)
191 #define PN_RAMMAP_RAMIF(n) (((n) << PN_RAMMAP_RAMIF_SHIFT) & \
192 PN_RAMMAP_RAMIF_MASK)
193 #define PN_RAMMAP_BASEAD_MASK GENMASK(13, 0)
194 #define PN_RAMMAP_BASEAD(offs) (((offs) >> 3) & PN_RAMMAP_BASEAD_MASK)
195 #define PN_RAMMAP_DATA(area, ramif, basead) ((PN_RAMMAP_##area) | \
196 (PN_RAMMAP_RAMIF(ramif)) | \
197 (PN_RAMMAP_BASEAD(basead)))
200 #define PN_CON_EN BIT(31)
201 #define PN_CON_DATAIF_EN BIT(30)
202 #define PN_CON_RES_MASK (BIT(17) | BIT(16))
203 #define PN_CON_RES_FORCE_STALL BIT(17)
204 #define PN_CON_RES_NORMAL BIT(16)
205 #define PN_CON_RES_FORCE_NRDY 0
206 #define PN_CON_LAST BIT(11)
207 #define PN_CON_RES_WEN BIT(7)
208 #define PN_CON_CLR BIT(0)
210 /* PN_INT_STA and PN_INT_ENA */
211 #define PN_INT_LSTTR BIT(4)
212 #define PN_INT_BFRDY BIT(0)
215 #define SSIFCMD_URES_U2 BIT(9)
216 #define SSIFCMD_URES_U1 BIT(8)
217 #define SSIFCMD_UDIR_U2 BIT(7)
218 #define SSIFCMD_UDIR_U1 BIT(6)
219 #define SSIFCMD_UREQ_U2 BIT(5)
220 #define SSIFCMD_UREQ_U1 BIT(4)
222 #define USB3_EP0_SS_MAX_PACKET_SIZE 512
223 #define USB3_EP0_HSFS_MAX_PACKET_SIZE 64
224 #define USB3_EP0_BUF_SIZE 8
225 #define USB3_MAX_NUM_PIPES 6 /* This includes PIPE 0 */
226 #define USB3_WAIT_US 3
229 struct renesas_usb3_request {
230 struct usb_request req;
231 struct list_head queue;
234 #define USB3_EP_NAME_SIZE 8
235 struct renesas_usb3_ep {
237 struct renesas_usb3 *usb3;
239 char ep_name[USB3_EP_NAME_SIZE];
240 struct list_head queue;
248 struct renesas_usb3_priv {
249 int ramsize_per_ramif; /* unit = bytes */
251 int ramsize_per_pipe; /* unit = bytes */
252 bool workaround_for_vbus; /* if true, don't check vbus signal */
255 struct renesas_usb3 {
258 struct usb_gadget gadget;
259 struct usb_gadget_driver *driver;
261 struct renesas_usb3_ep *usb3_ep;
267 struct usb_request *ep0_req;
269 u8 ep0_buf[USB3_EP0_BUF_SIZE];
271 bool workaround_for_vbus;
274 #define gadget_to_renesas_usb3(_gadget) \
275 container_of(_gadget, struct renesas_usb3, gadget)
276 #define renesas_usb3_to_gadget(renesas_usb3) (&renesas_usb3->gadget)
277 #define usb3_to_dev(_usb3) (_usb3->gadget.dev.parent)
279 #define usb_ep_to_usb3_ep(_ep) container_of(_ep, struct renesas_usb3_ep, ep)
280 #define usb3_ep_to_usb3(_usb3_ep) (_usb3_ep->usb3)
281 #define usb_req_to_usb3_req(_req) container_of(_req, \
282 struct renesas_usb3_request, req)
284 #define usb3_get_ep(usb3, n) ((usb3)->usb3_ep + (n))
285 #define usb3_for_each_ep(usb3_ep, usb3, i) \
286 for ((i) = 0, usb3_ep = usb3_get_ep(usb3, (i)); \
287 (i) < (usb3)->num_usb3_eps; \
288 (i)++, usb3_ep = usb3_get_ep(usb3, (i)))
290 static const char udc_name[] = "renesas_usb3";
292 static void usb3_write(struct renesas_usb3 *usb3, u32 data, u32 offs)
294 iowrite32(data, usb3->reg + offs);
297 static u32 usb3_read(struct renesas_usb3 *usb3, u32 offs)
299 return ioread32(usb3->reg + offs);
302 static void usb3_set_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs)
304 u32 val = usb3_read(usb3, offs);
307 usb3_write(usb3, val, offs);
310 static void usb3_clear_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs)
312 u32 val = usb3_read(usb3, offs);
315 usb3_write(usb3, val, offs);
318 static int usb3_wait(struct renesas_usb3 *usb3, u32 reg, u32 mask,
323 for (i = 0; i < USB3_WAIT_US; i++) {
324 if ((usb3_read(usb3, reg) & mask) == expected)
329 dev_dbg(usb3_to_dev(usb3), "%s: timed out (%8x, %08x, %08x)\n",
330 __func__, reg, mask, expected);
335 static void usb3_enable_irq_1(struct renesas_usb3 *usb3, u32 bits)
337 usb3_set_bit(usb3, bits, USB3_USB_INT_ENA_1);
340 static void usb3_disable_irq_1(struct renesas_usb3 *usb3, u32 bits)
342 usb3_clear_bit(usb3, bits, USB3_USB_INT_ENA_1);
345 static void usb3_enable_pipe_irq(struct renesas_usb3 *usb3, int num)
347 usb3_set_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2);
350 static void usb3_disable_pipe_irq(struct renesas_usb3 *usb3, int num)
352 usb3_clear_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2);
355 static void usb3_init_axi_bridge(struct renesas_usb3 *usb3)
358 usb3_write(usb3, ~0, USB3_DMA_INT_STA);
359 usb3_write(usb3, 0, USB3_DMA_INT_ENA);
360 usb3_set_bit(usb3, AXI_INT_DMAINT | AXI_INT_EPCINT, USB3_AXI_INT_ENA);
363 static void usb3_init_epc_registers(struct renesas_usb3 *usb3)
365 /* FIXME: How to change host / peripheral mode as well? */
366 usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON);
367 usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON);
369 usb3_write(usb3, ~0, USB3_USB_INT_STA_1);
370 usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG);
373 static bool usb3_wakeup_usb2_phy(struct renesas_usb3 *usb3)
375 if (!(usb3_read(usb3, USB3_USB20_CON) & USB20_CON_B2_SUSPEND))
376 return true; /* already waked it up */
378 usb3_clear_bit(usb3, USB20_CON_B2_SUSPEND, USB3_USB20_CON);
379 usb3_enable_irq_1(usb3, USB_INT_1_B2_RSUM);
384 static void usb3_usb2_pullup(struct renesas_usb3 *usb3, int pullup)
386 u32 bits = USB20_CON_B2_PUE | USB20_CON_B2_CONNECT;
388 if (usb3->softconnect && pullup)
389 usb3_set_bit(usb3, bits, USB3_USB20_CON);
391 usb3_clear_bit(usb3, bits, USB3_USB20_CON);
394 static void usb3_set_test_mode(struct renesas_usb3 *usb3)
396 u32 val = usb3_read(usb3, USB3_USB20_CON);
398 val &= ~USB20_CON_B2_TSTMOD_MASK;
399 val |= USB20_CON_B2_TSTMOD(usb3->test_mode);
400 usb3_write(usb3, val | USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON);
401 if (!usb3->test_mode)
402 usb3_clear_bit(usb3, USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON);
405 static void usb3_start_usb2_connection(struct renesas_usb3 *usb3)
407 usb3->disabled_count++;
408 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
409 usb3_set_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON);
410 usb3_usb2_pullup(usb3, 1);
413 static int usb3_is_usb3_phy_in_u3(struct renesas_usb3 *usb3)
415 return usb3_read(usb3, USB3_USB30_CON) & USB30_CON_POW_SEL_IN_U3;
418 static bool usb3_wakeup_usb3_phy(struct renesas_usb3 *usb3)
420 if (!usb3_is_usb3_phy_in_u3(usb3))
421 return true; /* already waked it up */
423 usb3_set_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON);
424 usb3_enable_irq_1(usb3, USB_INT_1_B3_PLLWKUP);
429 static u16 usb3_feature_get_un_enabled(struct renesas_usb3 *usb3)
431 u32 mask_u2 = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2;
432 u32 mask_u1 = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1;
433 u32 val = usb3_read(usb3, USB3_SSIFCMD);
436 /* Enables {U2,U1} if the bits of UDIR and UREQ are set to 0 */
437 if (!(val & mask_u2))
438 ret |= 1 << USB_DEV_STAT_U2_ENABLED;
439 if (!(val & mask_u1))
440 ret |= 1 << USB_DEV_STAT_U1_ENABLED;
445 static void usb3_feature_u2_enable(struct renesas_usb3 *usb3, bool enable)
447 u32 bits = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2;
449 /* Enables U2 if the bits of UDIR and UREQ are set to 0 */
451 usb3_clear_bit(usb3, bits, USB3_SSIFCMD);
453 usb3_set_bit(usb3, bits, USB3_SSIFCMD);
456 static void usb3_feature_u1_enable(struct renesas_usb3 *usb3, bool enable)
458 u32 bits = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1;
460 /* Enables U1 if the bits of UDIR and UREQ are set to 0 */
462 usb3_clear_bit(usb3, bits, USB3_SSIFCMD);
464 usb3_set_bit(usb3, bits, USB3_SSIFCMD);
467 static void usb3_start_operation_for_usb3(struct renesas_usb3 *usb3)
469 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
470 usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON);
471 usb3_set_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON);
474 static void usb3_start_usb3_connection(struct renesas_usb3 *usb3)
476 usb3_start_operation_for_usb3(usb3);
477 usb3_set_bit(usb3, USB_COM_CON_RX_DETECTION, USB3_USB_COM_CON);
479 usb3_enable_irq_1(usb3, USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE |
483 static void usb3_stop_usb3_connection(struct renesas_usb3 *usb3)
485 usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON);
488 static void usb3_transition_to_default_state(struct renesas_usb3 *usb3,
491 usb3_set_bit(usb3, USB_INT_2_PIPE(0), USB3_USB_INT_ENA_2);
492 usb3_write(usb3, P0_INT_ALL_BITS, USB3_P0_INT_STA);
493 usb3_set_bit(usb3, P0_INT_ALL_BITS, USB3_P0_INT_ENA);
496 usb3_enable_irq_1(usb3, USB_INT_1_B3_WRMRST |
497 USB_INT_1_B3_HOTRST);
499 usb3_enable_irq_1(usb3, USB_INT_1_B2_SPND |
500 USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST);
503 static void usb3_connect(struct renesas_usb3 *usb3)
505 if (usb3_wakeup_usb3_phy(usb3))
506 usb3_start_usb3_connection(usb3);
509 static void usb3_reset_epc(struct renesas_usb3 *usb3)
511 usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
512 usb3_clear_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
513 usb3_set_bit(usb3, USB_COM_CON_PIPE_CLR, USB3_USB_COM_CON);
515 usb3_set_test_mode(usb3);
518 static void usb3_disconnect(struct renesas_usb3 *usb3)
520 usb3->disabled_count = 0;
521 usb3_usb2_pullup(usb3, 0);
522 usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON);
523 usb3_reset_epc(usb3);
524 usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM | USB_INT_1_B3_PLLWKUP |
525 USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE |
526 USB_INT_1_SPEED | USB_INT_1_B3_WRMRST |
527 USB_INT_1_B3_HOTRST | USB_INT_1_B2_SPND |
528 USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST);
529 usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON);
530 usb3_init_epc_registers(usb3);
533 usb3->driver->disconnect(&usb3->gadget);
536 static void usb3_check_vbus(struct renesas_usb3 *usb3)
538 if (usb3->workaround_for_vbus) {
541 if (usb3_read(usb3, USB3_USB_STA) & USB_STA_VBUS_STA)
544 usb3_disconnect(usb3);
548 static void renesas_usb3_init_controller(struct renesas_usb3 *usb3)
550 usb3_init_axi_bridge(usb3);
551 usb3_init_epc_registers(usb3);
553 usb3_check_vbus(usb3);
556 static void renesas_usb3_stop_controller(struct renesas_usb3 *usb3)
558 usb3_disconnect(usb3);
559 usb3_write(usb3, 0, USB3_P0_INT_ENA);
560 usb3_write(usb3, 0, USB3_PN_INT_ENA);
561 usb3_write(usb3, 0, USB3_USB_INT_ENA_1);
562 usb3_write(usb3, 0, USB3_USB_INT_ENA_2);
563 usb3_write(usb3, 0, USB3_AXI_INT_ENA);
566 static void usb3_irq_epc_int_1_pll_wakeup(struct renesas_usb3 *usb3)
568 usb3_disable_irq_1(usb3, USB_INT_1_B3_PLLWKUP);
569 usb3_clear_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON);
570 usb3_start_usb3_connection(usb3);
573 static void usb3_irq_epc_int_1_linkup_success(struct renesas_usb3 *usb3)
575 usb3_transition_to_default_state(usb3, true);
578 static void usb3_irq_epc_int_1_resume(struct renesas_usb3 *usb3)
580 usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM);
581 usb3_start_usb2_connection(usb3);
582 usb3_transition_to_default_state(usb3, false);
585 static void usb3_irq_epc_int_1_disable(struct renesas_usb3 *usb3)
587 usb3_stop_usb3_connection(usb3);
588 if (usb3_wakeup_usb2_phy(usb3))
589 usb3_irq_epc_int_1_resume(usb3);
592 static void usb3_irq_epc_int_1_bus_reset(struct renesas_usb3 *usb3)
594 usb3_reset_epc(usb3);
595 if (usb3->disabled_count < 3)
596 usb3_start_usb3_connection(usb3);
598 usb3_start_usb2_connection(usb3);
601 static void usb3_irq_epc_int_1_vbus_change(struct renesas_usb3 *usb3)
603 usb3_check_vbus(usb3);
606 static void usb3_irq_epc_int_1_hot_reset(struct renesas_usb3 *usb3)
608 usb3_reset_epc(usb3);
609 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
611 /* This bit shall be set within 12ms from the start of HotReset */
612 usb3_set_bit(usb3, USB30_CON_B3_HOTRST_CMP, USB3_USB30_CON);
615 static void usb3_irq_epc_int_1_warm_reset(struct renesas_usb3 *usb3)
617 usb3_reset_epc(usb3);
618 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
620 usb3_start_operation_for_usb3(usb3);
621 usb3_enable_irq_1(usb3, USB_INT_1_SPEED);
624 static void usb3_irq_epc_int_1_speed(struct renesas_usb3 *usb3)
626 u32 speed = usb3_read(usb3, USB3_USB_STA) & USB_STA_SPEED_MASK;
629 case USB_STA_SPEED_SS:
630 usb3->gadget.speed = USB_SPEED_SUPER;
631 usb3->gadget.ep0->maxpacket = USB3_EP0_SS_MAX_PACKET_SIZE;
633 case USB_STA_SPEED_HS:
634 usb3->gadget.speed = USB_SPEED_HIGH;
635 usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE;
637 case USB_STA_SPEED_FS:
638 usb3->gadget.speed = USB_SPEED_FULL;
639 usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE;
642 usb3->gadget.speed = USB_SPEED_UNKNOWN;
647 static void usb3_irq_epc_int_1(struct renesas_usb3 *usb3, u32 int_sta_1)
649 if (int_sta_1 & USB_INT_1_B3_PLLWKUP)
650 usb3_irq_epc_int_1_pll_wakeup(usb3);
652 if (int_sta_1 & USB_INT_1_B3_LUPSUCS)
653 usb3_irq_epc_int_1_linkup_success(usb3);
655 if (int_sta_1 & USB_INT_1_B3_HOTRST)
656 usb3_irq_epc_int_1_hot_reset(usb3);
658 if (int_sta_1 & USB_INT_1_B3_WRMRST)
659 usb3_irq_epc_int_1_warm_reset(usb3);
661 if (int_sta_1 & USB_INT_1_B3_DISABLE)
662 usb3_irq_epc_int_1_disable(usb3);
664 if (int_sta_1 & USB_INT_1_B2_USBRST)
665 usb3_irq_epc_int_1_bus_reset(usb3);
667 if (int_sta_1 & USB_INT_1_B2_RSUM)
668 usb3_irq_epc_int_1_resume(usb3);
670 if (int_sta_1 & USB_INT_1_SPEED)
671 usb3_irq_epc_int_1_speed(usb3);
673 if (int_sta_1 & USB_INT_1_VBUS_CNG)
674 usb3_irq_epc_int_1_vbus_change(usb3);
677 static struct renesas_usb3_request *__usb3_get_request(struct renesas_usb3_ep
680 return list_first_entry_or_null(&usb3_ep->queue,
681 struct renesas_usb3_request, queue);
684 static struct renesas_usb3_request *usb3_get_request(struct renesas_usb3_ep
687 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
688 struct renesas_usb3_request *usb3_req;
691 spin_lock_irqsave(&usb3->lock, flags);
692 usb3_req = __usb3_get_request(usb3_ep);
693 spin_unlock_irqrestore(&usb3->lock, flags);
698 static void __usb3_request_done(struct renesas_usb3_ep *usb3_ep,
699 struct renesas_usb3_request *usb3_req,
702 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
704 dev_dbg(usb3_to_dev(usb3), "giveback: ep%2d, %u, %u, %d\n",
705 usb3_ep->num, usb3_req->req.length, usb3_req->req.actual,
707 usb3_req->req.status = status;
708 usb3_ep->started = false;
709 list_del_init(&usb3_req->queue);
710 spin_unlock(&usb3->lock);
711 usb_gadget_giveback_request(&usb3_ep->ep, &usb3_req->req);
712 spin_lock(&usb3->lock);
715 static void usb3_request_done(struct renesas_usb3_ep *usb3_ep,
716 struct renesas_usb3_request *usb3_req, int status)
718 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
721 spin_lock_irqsave(&usb3->lock, flags);
722 __usb3_request_done(usb3_ep, usb3_req, status);
723 spin_unlock_irqrestore(&usb3->lock, flags);
726 static void usb3_irq_epc_pipe0_status_end(struct renesas_usb3 *usb3)
728 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
729 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
732 usb3_request_done(usb3_ep, usb3_req, 0);
734 usb3_set_test_mode(usb3);
737 static void usb3_get_setup_data(struct renesas_usb3 *usb3,
738 struct usb_ctrlrequest *ctrl)
740 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
741 u32 *data = (u32 *)ctrl;
743 *data++ = usb3_read(usb3, USB3_STUP_DAT_0);
744 *data = usb3_read(usb3, USB3_STUP_DAT_1);
746 /* update this driver's flag */
747 usb3_ep->dir_in = !!(ctrl->bRequestType & USB_DIR_IN);
750 static void usb3_set_p0_con_update_res(struct renesas_usb3 *usb3, u32 res)
752 u32 val = usb3_read(usb3, USB3_P0_CON);
754 val &= ~(P0_CON_ST_RES_MASK | P0_CON_OT_RES_MASK | P0_CON_IN_RES_MASK);
755 val |= res | P0_CON_RES_WEN;
756 usb3_write(usb3, val, USB3_P0_CON);
759 static void usb3_set_p0_con_for_ctrl_read_data(struct renesas_usb3 *usb3)
761 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY |
762 P0_CON_OT_RES_FORCE_STALL |
763 P0_CON_IN_RES_NORMAL);
766 static void usb3_set_p0_con_for_ctrl_read_status(struct renesas_usb3 *usb3)
768 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL |
769 P0_CON_OT_RES_FORCE_STALL |
770 P0_CON_IN_RES_NORMAL);
773 static void usb3_set_p0_con_for_ctrl_write_data(struct renesas_usb3 *usb3)
775 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY |
776 P0_CON_OT_RES_NORMAL |
777 P0_CON_IN_RES_FORCE_STALL);
780 static void usb3_set_p0_con_for_ctrl_write_status(struct renesas_usb3 *usb3)
782 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL |
783 P0_CON_OT_RES_NORMAL |
784 P0_CON_IN_RES_FORCE_STALL);
787 static void usb3_set_p0_con_for_no_data(struct renesas_usb3 *usb3)
789 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL |
790 P0_CON_OT_RES_FORCE_STALL |
791 P0_CON_IN_RES_FORCE_STALL);
794 static void usb3_set_p0_con_stall(struct renesas_usb3 *usb3)
796 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_STALL |
797 P0_CON_OT_RES_FORCE_STALL |
798 P0_CON_IN_RES_FORCE_STALL);
801 static void usb3_set_p0_con_stop(struct renesas_usb3 *usb3)
803 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY |
804 P0_CON_OT_RES_FORCE_NRDY |
805 P0_CON_IN_RES_FORCE_NRDY);
808 static int usb3_pn_change(struct renesas_usb3 *usb3, int num)
810 if (num == 0 || num > usb3->num_usb3_eps)
813 usb3_write(usb3, num, USB3_PIPE_COM);
818 static void usb3_set_pn_con_update_res(struct renesas_usb3 *usb3, u32 res)
820 u32 val = usb3_read(usb3, USB3_PN_CON);
822 val &= ~PN_CON_RES_MASK;
823 val |= res & PN_CON_RES_MASK;
824 val |= PN_CON_RES_WEN;
825 usb3_write(usb3, val, USB3_PN_CON);
828 static void usb3_pn_start(struct renesas_usb3 *usb3)
830 usb3_set_pn_con_update_res(usb3, PN_CON_RES_NORMAL);
833 static void usb3_pn_stop(struct renesas_usb3 *usb3)
835 usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_NRDY);
838 static void usb3_pn_stall(struct renesas_usb3 *usb3)
840 usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_STALL);
843 static int usb3_pn_con_clear(struct renesas_usb3 *usb3)
845 usb3_set_bit(usb3, PN_CON_CLR, USB3_PN_CON);
847 return usb3_wait(usb3, USB3_PN_CON, PN_CON_CLR, 0);
850 static bool usb3_is_transfer_complete(struct renesas_usb3_ep *usb3_ep,
851 struct renesas_usb3_request *usb3_req)
853 struct usb_request *req = &usb3_req->req;
855 if ((!req->zero && req->actual == req->length) ||
856 (req->actual % usb3_ep->ep.maxpacket) || (req->length == 0))
862 static int usb3_wait_pipe_status(struct renesas_usb3_ep *usb3_ep, u32 mask)
864 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
865 u32 sta_reg = usb3_ep->num ? USB3_PN_STA : USB3_P0_STA;
867 return usb3_wait(usb3, sta_reg, mask, mask);
870 static void usb3_set_px_con_send(struct renesas_usb3_ep *usb3_ep, int bytes,
873 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
874 u32 con_reg = usb3_ep->num ? USB3_PN_CON : USB3_P0_CON;
875 u32 val = usb3_read(usb3, con_reg);
877 val |= PX_CON_SEND | PX_CON_BYTE_EN_BYTES(bytes);
878 val |= (usb3_ep->num && last) ? PN_CON_LAST : 0;
879 usb3_write(usb3, val, con_reg);
882 static int usb3_write_pipe(struct renesas_usb3_ep *usb3_ep,
883 struct renesas_usb3_request *usb3_req,
886 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
888 int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual,
889 usb3_ep->ep.maxpacket);
890 u8 *buf = usb3_req->req.buf + usb3_req->req.actual;
892 bool is_last = !len ? true : false;
894 if (usb3_wait_pipe_status(usb3_ep, PX_STA_BUFSTS) < 0)
897 /* Update gadget driver parameter */
898 usb3_req->req.actual += len;
900 /* Write data to the register */
902 iowrite32_rep(usb3->reg + fifo_reg, buf, len / 4);
903 buf += (len / 4) * 4;
904 len %= 4; /* update len to use usb3_set_pX_con_send() */
908 for (i = 0; i < len; i++)
909 tmp |= buf[i] << (8 * i);
910 usb3_write(usb3, tmp, fifo_reg);
914 is_last = usb3_is_transfer_complete(usb3_ep, usb3_req);
916 usb3_set_px_con_send(usb3_ep, len, is_last);
918 return is_last ? 0 : -EAGAIN;
921 static u32 usb3_get_received_length(struct renesas_usb3_ep *usb3_ep)
923 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
924 u32 lng_reg = usb3_ep->num ? USB3_PN_LNG : USB3_P0_LNG;
926 return usb3_read(usb3, lng_reg);
929 static int usb3_read_pipe(struct renesas_usb3_ep *usb3_ep,
930 struct renesas_usb3_request *usb3_req, u32 fifo_reg)
932 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
934 int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual,
935 usb3_get_received_length(usb3_ep));
936 u8 *buf = usb3_req->req.buf + usb3_req->req.actual;
942 /* Update gadget driver parameter */
943 usb3_req->req.actual += len;
945 /* Read data from the register */
947 ioread32_rep(usb3->reg + fifo_reg, buf, len / 4);
948 buf += (len / 4) * 4;
953 tmp = usb3_read(usb3, fifo_reg);
954 for (i = 0; i < len; i++)
955 buf[i] = (tmp >> (8 * i)) & 0xff;
958 return usb3_is_transfer_complete(usb3_ep, usb3_req) ? 0 : -EAGAIN;
961 static void usb3_set_status_stage(struct renesas_usb3_ep *usb3_ep,
962 struct renesas_usb3_request *usb3_req)
964 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
966 if (usb3_ep->dir_in) {
967 usb3_set_p0_con_for_ctrl_read_status(usb3);
969 if (!usb3_req->req.length)
970 usb3_set_p0_con_for_no_data(usb3);
972 usb3_set_p0_con_for_ctrl_write_status(usb3);
976 static void usb3_p0_xfer(struct renesas_usb3_ep *usb3_ep,
977 struct renesas_usb3_request *usb3_req)
982 ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_P0_WRITE);
984 ret = usb3_read_pipe(usb3_ep, usb3_req, USB3_P0_READ);
987 usb3_set_status_stage(usb3_ep, usb3_req);
990 static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep,
991 struct renesas_usb3_request *usb3_req)
993 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
995 if (usb3_ep->started)
998 usb3_ep->started = true;
1000 if (usb3_ep->dir_in) {
1001 usb3_set_bit(usb3, P0_MOD_DIR, USB3_P0_MOD);
1002 usb3_set_p0_con_for_ctrl_read_data(usb3);
1004 usb3_clear_bit(usb3, P0_MOD_DIR, USB3_P0_MOD);
1005 if (usb3_req->req.length)
1006 usb3_set_p0_con_for_ctrl_write_data(usb3);
1009 usb3_p0_xfer(usb3_ep, usb3_req);
1012 static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep,
1013 struct renesas_usb3_request *usb3_req)
1015 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1016 struct renesas_usb3_request *usb3_req_first = usb3_get_request(usb3_ep);
1017 unsigned long flags;
1019 u32 enable_bits = 0;
1021 if (usb3_ep->halt || usb3_ep->started)
1023 if (usb3_req != usb3_req_first)
1026 spin_lock_irqsave(&usb3->lock, flags);
1027 if (usb3_pn_change(usb3, usb3_ep->num) < 0)
1030 usb3_ep->started = true;
1031 usb3_pn_start(usb3);
1033 if (usb3_ep->dir_in) {
1034 ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE);
1035 enable_bits |= PN_INT_LSTTR;
1039 enable_bits |= PN_INT_BFRDY;
1042 usb3_set_bit(usb3, enable_bits, USB3_PN_INT_ENA);
1043 usb3_enable_pipe_irq(usb3, usb3_ep->num);
1046 spin_unlock_irqrestore(&usb3->lock, flags);
1049 static int renesas_usb3_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
1052 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
1053 struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req);
1054 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1055 unsigned long flags;
1057 dev_dbg(usb3_to_dev(usb3), "ep_queue: ep%2d, %u\n", usb3_ep->num,
1060 _req->status = -EINPROGRESS;
1062 spin_lock_irqsave(&usb3->lock, flags);
1063 list_add_tail(&usb3_req->queue, &usb3_ep->queue);
1064 spin_unlock_irqrestore(&usb3->lock, flags);
1067 usb3_start_pipe0(usb3_ep, usb3_req);
1069 usb3_start_pipen(usb3_ep, usb3_req);
1074 static void usb3_set_device_address(struct renesas_usb3 *usb3, u16 addr)
1076 /* DEV_ADDR bit field is cleared by WarmReset, HotReset and BusReset */
1077 usb3_set_bit(usb3, USB_COM_CON_DEV_ADDR(addr), USB3_USB_COM_CON);
1080 static bool usb3_std_req_set_address(struct renesas_usb3 *usb3,
1081 struct usb_ctrlrequest *ctrl)
1083 if (ctrl->wValue >= 128)
1084 return true; /* stall */
1086 usb3_set_device_address(usb3, ctrl->wValue);
1087 usb3_set_p0_con_for_no_data(usb3);
1092 static void usb3_pipe0_internal_xfer(struct renesas_usb3 *usb3,
1093 void *tx_data, size_t len,
1094 void (*complete)(struct usb_ep *ep,
1095 struct usb_request *req))
1097 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
1100 memcpy(usb3->ep0_buf, tx_data,
1101 min_t(size_t, len, USB3_EP0_BUF_SIZE));
1103 usb3->ep0_req->buf = &usb3->ep0_buf;
1104 usb3->ep0_req->length = len;
1105 usb3->ep0_req->complete = complete;
1106 renesas_usb3_ep_queue(&usb3_ep->ep, usb3->ep0_req, GFP_ATOMIC);
1109 static void usb3_pipe0_get_status_completion(struct usb_ep *ep,
1110 struct usb_request *req)
1114 static bool usb3_std_req_get_status(struct renesas_usb3 *usb3,
1115 struct usb_ctrlrequest *ctrl)
1118 struct renesas_usb3_ep *usb3_ep;
1122 switch (ctrl->bRequestType & USB_RECIP_MASK) {
1123 case USB_RECIP_DEVICE:
1124 if (usb3->gadget.is_selfpowered)
1125 status |= 1 << USB_DEVICE_SELF_POWERED;
1126 if (usb3->gadget.speed == USB_SPEED_SUPER)
1127 status |= usb3_feature_get_un_enabled(usb3);
1129 case USB_RECIP_INTERFACE:
1131 case USB_RECIP_ENDPOINT:
1132 num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
1133 usb3_ep = usb3_get_ep(usb3, num);
1135 status |= 1 << USB_ENDPOINT_HALT;
1143 status = cpu_to_le16(status);
1144 dev_dbg(usb3_to_dev(usb3), "get_status: req = %p\n",
1145 usb_req_to_usb3_req(usb3->ep0_req));
1146 usb3_pipe0_internal_xfer(usb3, &status, sizeof(status),
1147 usb3_pipe0_get_status_completion);
1153 static bool usb3_std_req_feature_device(struct renesas_usb3 *usb3,
1154 struct usb_ctrlrequest *ctrl, bool set)
1157 u16 w_value = le16_to_cpu(ctrl->wValue);
1160 case USB_DEVICE_TEST_MODE:
1163 usb3->test_mode = le16_to_cpu(ctrl->wIndex) >> 8;
1166 case USB_DEVICE_U1_ENABLE:
1167 case USB_DEVICE_U2_ENABLE:
1168 if (usb3->gadget.speed != USB_SPEED_SUPER)
1170 if (w_value == USB_DEVICE_U1_ENABLE)
1171 usb3_feature_u1_enable(usb3, set);
1172 if (w_value == USB_DEVICE_U2_ENABLE)
1173 usb3_feature_u2_enable(usb3, set);
1183 static int usb3_set_halt_p0(struct renesas_usb3_ep *usb3_ep, bool halt)
1185 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1187 if (unlikely(usb3_ep->num))
1190 usb3_ep->halt = halt;
1192 usb3_set_p0_con_stall(usb3);
1194 usb3_set_p0_con_stop(usb3);
1199 static int usb3_set_halt_pn(struct renesas_usb3_ep *usb3_ep, bool halt,
1200 bool is_clear_feature)
1202 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1203 unsigned long flags;
1205 spin_lock_irqsave(&usb3->lock, flags);
1206 if (!usb3_pn_change(usb3, usb3_ep->num)) {
1207 usb3_ep->halt = halt;
1209 usb3_pn_stall(usb3);
1210 } else if (!is_clear_feature || !usb3_ep->wedge) {
1211 usb3_pn_con_clear(usb3);
1212 usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON);
1216 spin_unlock_irqrestore(&usb3->lock, flags);
1221 static int usb3_set_halt(struct renesas_usb3_ep *usb3_ep, bool halt,
1222 bool is_clear_feature)
1226 if (halt && usb3_ep->started)
1230 ret = usb3_set_halt_pn(usb3_ep, halt, is_clear_feature);
1232 ret = usb3_set_halt_p0(usb3_ep, halt);
1237 static bool usb3_std_req_feature_endpoint(struct renesas_usb3 *usb3,
1238 struct usb_ctrlrequest *ctrl,
1241 int num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
1242 struct renesas_usb3_ep *usb3_ep;
1243 struct renesas_usb3_request *usb3_req;
1245 if (le16_to_cpu(ctrl->wValue) != USB_ENDPOINT_HALT)
1246 return true; /* stall */
1248 usb3_ep = usb3_get_ep(usb3, num);
1249 usb3_set_halt(usb3_ep, set, true);
1251 /* Restarts a queue if clear feature */
1253 usb3_ep->started = false;
1254 usb3_req = usb3_get_request(usb3_ep);
1256 usb3_start_pipen(usb3_ep, usb3_req);
1262 static bool usb3_std_req_feature(struct renesas_usb3 *usb3,
1263 struct usb_ctrlrequest *ctrl, bool set)
1267 switch (ctrl->bRequestType & USB_RECIP_MASK) {
1268 case USB_RECIP_DEVICE:
1269 stall = usb3_std_req_feature_device(usb3, ctrl, set);
1271 case USB_RECIP_INTERFACE:
1273 case USB_RECIP_ENDPOINT:
1274 stall = usb3_std_req_feature_endpoint(usb3, ctrl, set);
1282 usb3_set_p0_con_for_no_data(usb3);
1287 static void usb3_pipe0_set_sel_completion(struct usb_ep *ep,
1288 struct usb_request *req)
1293 static bool usb3_std_req_set_sel(struct renesas_usb3 *usb3,
1294 struct usb_ctrlrequest *ctrl)
1296 u16 w_length = le16_to_cpu(ctrl->wLength);
1299 return true; /* stall */
1301 dev_dbg(usb3_to_dev(usb3), "set_sel: req = %p\n",
1302 usb_req_to_usb3_req(usb3->ep0_req));
1303 usb3_pipe0_internal_xfer(usb3, NULL, 6, usb3_pipe0_set_sel_completion);
1308 static bool usb3_std_req_set_configuration(struct renesas_usb3 *usb3,
1309 struct usb_ctrlrequest *ctrl)
1311 if (ctrl->wValue > 0)
1312 usb3_set_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
1314 usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
1320 * usb3_handle_standard_request - handle some standard requests
1321 * @usb3: the renesas_usb3 pointer
1322 * @ctrl: a pointer of setup data
1324 * Returns true if this function handled a standard request
1326 static bool usb3_handle_standard_request(struct renesas_usb3 *usb3,
1327 struct usb_ctrlrequest *ctrl)
1332 if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
1333 switch (ctrl->bRequest) {
1334 case USB_REQ_SET_ADDRESS:
1335 stall = usb3_std_req_set_address(usb3, ctrl);
1338 case USB_REQ_GET_STATUS:
1339 stall = usb3_std_req_get_status(usb3, ctrl);
1342 case USB_REQ_CLEAR_FEATURE:
1343 stall = usb3_std_req_feature(usb3, ctrl, false);
1346 case USB_REQ_SET_FEATURE:
1347 stall = usb3_std_req_feature(usb3, ctrl, true);
1350 case USB_REQ_SET_SEL:
1351 stall = usb3_std_req_set_sel(usb3, ctrl);
1354 case USB_REQ_SET_ISOCH_DELAY:
1355 /* This hardware doesn't support Isochronous xfer */
1359 case USB_REQ_SET_CONFIGURATION:
1360 usb3_std_req_set_configuration(usb3, ctrl);
1368 usb3_set_p0_con_stall(usb3);
1373 static int usb3_p0_con_clear_buffer(struct renesas_usb3 *usb3)
1375 usb3_set_bit(usb3, P0_CON_BCLR, USB3_P0_CON);
1377 return usb3_wait(usb3, USB3_P0_CON, P0_CON_BCLR, 0);
1380 static void usb3_irq_epc_pipe0_setup(struct renesas_usb3 *usb3)
1382 struct usb_ctrlrequest ctrl;
1383 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
1385 /* Call giveback function if previous transfer is not completed */
1386 if (usb3_ep->started)
1387 usb3_request_done(usb3_ep, usb3_get_request(usb3_ep),
1390 usb3_p0_con_clear_buffer(usb3);
1391 usb3_get_setup_data(usb3, &ctrl);
1392 if (!usb3_handle_standard_request(usb3, &ctrl))
1393 if (usb3->driver->setup(&usb3->gadget, &ctrl) < 0)
1394 usb3_set_p0_con_stall(usb3);
1397 static void usb3_irq_epc_pipe0_bfrdy(struct renesas_usb3 *usb3)
1399 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
1400 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
1405 usb3_p0_xfer(usb3_ep, usb3_req);
1408 static void usb3_irq_epc_pipe0(struct renesas_usb3 *usb3)
1410 u32 p0_int_sta = usb3_read(usb3, USB3_P0_INT_STA);
1412 p0_int_sta &= usb3_read(usb3, USB3_P0_INT_ENA);
1413 usb3_write(usb3, p0_int_sta, USB3_P0_INT_STA);
1414 if (p0_int_sta & P0_INT_STSED)
1415 usb3_irq_epc_pipe0_status_end(usb3);
1416 if (p0_int_sta & P0_INT_SETUP)
1417 usb3_irq_epc_pipe0_setup(usb3);
1418 if (p0_int_sta & P0_INT_BFRDY)
1419 usb3_irq_epc_pipe0_bfrdy(usb3);
1422 static void usb3_request_done_pipen(struct renesas_usb3 *usb3,
1423 struct renesas_usb3_ep *usb3_ep,
1424 struct renesas_usb3_request *usb3_req,
1427 unsigned long flags;
1429 spin_lock_irqsave(&usb3->lock, flags);
1430 if (usb3_pn_change(usb3, usb3_ep->num))
1432 spin_unlock_irqrestore(&usb3->lock, flags);
1434 usb3_disable_pipe_irq(usb3, usb3_ep->num);
1435 usb3_request_done(usb3_ep, usb3_req, status);
1437 /* get next usb3_req */
1438 usb3_req = usb3_get_request(usb3_ep);
1440 usb3_start_pipen(usb3_ep, usb3_req);
1443 static void usb3_irq_epc_pipen_lsttr(struct renesas_usb3 *usb3, int num)
1445 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num);
1446 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
1451 if (usb3_ep->dir_in) {
1452 dev_dbg(usb3_to_dev(usb3), "%s: len = %u, actual = %u\n",
1453 __func__, usb3_req->req.length, usb3_req->req.actual);
1454 usb3_request_done_pipen(usb3, usb3_ep, usb3_req, 0);
1458 static void usb3_irq_epc_pipen_bfrdy(struct renesas_usb3 *usb3, int num)
1460 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num);
1461 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
1467 spin_lock(&usb3->lock);
1468 if (usb3_pn_change(usb3, num))
1471 if (usb3_ep->dir_in) {
1472 /* Do not stop the IN pipe here to detect LSTTR interrupt */
1473 if (!usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE))
1474 usb3_clear_bit(usb3, PN_INT_BFRDY, USB3_PN_INT_ENA);
1476 if (!usb3_read_pipe(usb3_ep, usb3_req, USB3_PN_READ))
1481 /* need to unlock because usb3_request_done_pipen() locks it */
1482 spin_unlock(&usb3->lock);
1485 usb3_request_done_pipen(usb3, usb3_ep, usb3_req, 0);
1488 static void usb3_irq_epc_pipen(struct renesas_usb3 *usb3, int num)
1492 spin_lock(&usb3->lock);
1493 if (usb3_pn_change(usb3, num) < 0) {
1494 spin_unlock(&usb3->lock);
1498 pn_int_sta = usb3_read(usb3, USB3_PN_INT_STA);
1499 pn_int_sta &= usb3_read(usb3, USB3_PN_INT_ENA);
1500 usb3_write(usb3, pn_int_sta, USB3_PN_INT_STA);
1501 spin_unlock(&usb3->lock);
1502 if (pn_int_sta & PN_INT_LSTTR)
1503 usb3_irq_epc_pipen_lsttr(usb3, num);
1504 if (pn_int_sta & PN_INT_BFRDY)
1505 usb3_irq_epc_pipen_bfrdy(usb3, num);
1508 static void usb3_irq_epc_int_2(struct renesas_usb3 *usb3, u32 int_sta_2)
1512 for (i = 0; i < usb3->num_usb3_eps; i++) {
1513 if (int_sta_2 & USB_INT_2_PIPE(i)) {
1515 usb3_irq_epc_pipe0(usb3);
1517 usb3_irq_epc_pipen(usb3, i);
1522 static void usb3_irq_epc(struct renesas_usb3 *usb3)
1524 u32 int_sta_1 = usb3_read(usb3, USB3_USB_INT_STA_1);
1525 u32 int_sta_2 = usb3_read(usb3, USB3_USB_INT_STA_2);
1527 int_sta_1 &= usb3_read(usb3, USB3_USB_INT_ENA_1);
1529 usb3_write(usb3, int_sta_1, USB3_USB_INT_STA_1);
1530 usb3_irq_epc_int_1(usb3, int_sta_1);
1533 int_sta_2 &= usb3_read(usb3, USB3_USB_INT_ENA_2);
1535 usb3_irq_epc_int_2(usb3, int_sta_2);
1538 static irqreturn_t renesas_usb3_irq(int irq, void *_usb3)
1540 struct renesas_usb3 *usb3 = _usb3;
1541 irqreturn_t ret = IRQ_NONE;
1542 u32 axi_int_sta = usb3_read(usb3, USB3_AXI_INT_STA);
1544 if (axi_int_sta & AXI_INT_EPCINT) {
1552 static void usb3_write_pn_mod(struct renesas_usb3_ep *usb3_ep,
1553 const struct usb_endpoint_descriptor *desc)
1555 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1558 val |= usb3_ep->dir_in ? PN_MOD_DIR : 0;
1559 val |= PN_MOD_TYPE(usb_endpoint_type(desc));
1560 val |= PN_MOD_EPNUM(usb_endpoint_num(desc));
1561 usb3_write(usb3, val, USB3_PN_MOD);
1564 static u32 usb3_calc_ramarea(int ram_size)
1566 WARN_ON(ram_size > SZ_16K);
1568 if (ram_size <= SZ_1K)
1569 return PN_RAMMAP_RAMAREA_1KB;
1570 else if (ram_size <= SZ_2K)
1571 return PN_RAMMAP_RAMAREA_2KB;
1572 else if (ram_size <= SZ_4K)
1573 return PN_RAMMAP_RAMAREA_4KB;
1574 else if (ram_size <= SZ_8K)
1575 return PN_RAMMAP_RAMAREA_8KB;
1577 return PN_RAMMAP_RAMAREA_16KB;
1580 static u32 usb3_calc_rammap_val(struct renesas_usb3_ep *usb3_ep,
1581 const struct usb_endpoint_descriptor *desc)
1584 const u32 max_packet_array[] = {8, 16, 32, 64, 512};
1585 u32 mpkt = PN_RAMMAP_MPKT(1024);
1587 for (i = 0; i < ARRAY_SIZE(max_packet_array); i++) {
1588 if (usb_endpoint_maxp(desc) <= max_packet_array[i])
1589 mpkt = PN_RAMMAP_MPKT(max_packet_array[i]);
1592 return usb3_ep->rammap_val | mpkt;
1595 static int usb3_enable_pipe_n(struct renesas_usb3_ep *usb3_ep,
1596 const struct usb_endpoint_descriptor *desc)
1598 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1599 unsigned long flags;
1601 usb3_ep->dir_in = usb_endpoint_dir_in(desc);
1603 spin_lock_irqsave(&usb3->lock, flags);
1604 if (!usb3_pn_change(usb3, usb3_ep->num)) {
1605 usb3_write_pn_mod(usb3_ep, desc);
1606 usb3_write(usb3, usb3_calc_rammap_val(usb3_ep, desc),
1608 usb3_pn_con_clear(usb3);
1609 usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON);
1611 spin_unlock_irqrestore(&usb3->lock, flags);
1616 static int usb3_disable_pipe_n(struct renesas_usb3_ep *usb3_ep)
1618 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1619 unsigned long flags;
1621 usb3_ep->halt = false;
1623 spin_lock_irqsave(&usb3->lock, flags);
1624 if (!usb3_pn_change(usb3, usb3_ep->num)) {
1625 usb3_write(usb3, 0, USB3_PN_RAMMAP);
1626 usb3_clear_bit(usb3, PN_CON_EN, USB3_PN_CON);
1628 spin_unlock_irqrestore(&usb3->lock, flags);
1633 /*------- usb_ep_ops -----------------------------------------------------*/
1634 static int renesas_usb3_ep_enable(struct usb_ep *_ep,
1635 const struct usb_endpoint_descriptor *desc)
1637 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
1639 return usb3_enable_pipe_n(usb3_ep, desc);
1642 static int renesas_usb3_ep_disable(struct usb_ep *_ep)
1644 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
1645 struct renesas_usb3_request *usb3_req;
1648 usb3_req = usb3_get_request(usb3_ep);
1651 usb3_request_done(usb3_ep, usb3_req, -ESHUTDOWN);
1654 return usb3_disable_pipe_n(usb3_ep);
1657 static struct usb_request *__renesas_usb3_ep_alloc_request(gfp_t gfp_flags)
1659 struct renesas_usb3_request *usb3_req;
1661 usb3_req = kzalloc(sizeof(struct renesas_usb3_request), gfp_flags);
1665 INIT_LIST_HEAD(&usb3_req->queue);
1667 return &usb3_req->req;
1670 static void __renesas_usb3_ep_free_request(struct usb_request *_req)
1672 struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req);
1677 static struct usb_request *renesas_usb3_ep_alloc_request(struct usb_ep *_ep,
1680 return __renesas_usb3_ep_alloc_request(gfp_flags);
1683 static void renesas_usb3_ep_free_request(struct usb_ep *_ep,
1684 struct usb_request *_req)
1686 __renesas_usb3_ep_free_request(_req);
1689 static int renesas_usb3_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
1691 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
1692 struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req);
1693 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1695 dev_dbg(usb3_to_dev(usb3), "ep_dequeue: ep%2d, %u\n", usb3_ep->num,
1698 usb3_request_done_pipen(usb3, usb3_ep, usb3_req, -ECONNRESET);
1703 static int renesas_usb3_ep_set_halt(struct usb_ep *_ep, int value)
1705 return usb3_set_halt(usb_ep_to_usb3_ep(_ep), !!value, false);
1708 static int renesas_usb3_ep_set_wedge(struct usb_ep *_ep)
1710 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
1712 usb3_ep->wedge = true;
1713 return usb3_set_halt(usb3_ep, true, false);
1716 static void renesas_usb3_ep_fifo_flush(struct usb_ep *_ep)
1718 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
1719 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1720 unsigned long flags;
1723 spin_lock_irqsave(&usb3->lock, flags);
1724 if (!usb3_pn_change(usb3, usb3_ep->num)) {
1725 usb3_pn_con_clear(usb3);
1726 usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON);
1728 spin_unlock_irqrestore(&usb3->lock, flags);
1730 usb3_p0_con_clear_buffer(usb3);
1734 static struct usb_ep_ops renesas_usb3_ep_ops = {
1735 .enable = renesas_usb3_ep_enable,
1736 .disable = renesas_usb3_ep_disable,
1738 .alloc_request = renesas_usb3_ep_alloc_request,
1739 .free_request = renesas_usb3_ep_free_request,
1741 .queue = renesas_usb3_ep_queue,
1742 .dequeue = renesas_usb3_ep_dequeue,
1744 .set_halt = renesas_usb3_ep_set_halt,
1745 .set_wedge = renesas_usb3_ep_set_wedge,
1746 .fifo_flush = renesas_usb3_ep_fifo_flush,
1749 /*------- usb_gadget_ops -------------------------------------------------*/
1750 static int renesas_usb3_start(struct usb_gadget *gadget,
1751 struct usb_gadget_driver *driver)
1753 struct renesas_usb3 *usb3;
1755 if (!driver || driver->max_speed < USB_SPEED_FULL ||
1759 usb3 = gadget_to_renesas_usb3(gadget);
1761 /* hook up the driver */
1762 usb3->driver = driver;
1764 pm_runtime_enable(usb3_to_dev(usb3));
1765 pm_runtime_get_sync(usb3_to_dev(usb3));
1767 renesas_usb3_init_controller(usb3);
1772 static int renesas_usb3_stop(struct usb_gadget *gadget)
1774 struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget);
1776 usb3->softconnect = false;
1777 usb3->gadget.speed = USB_SPEED_UNKNOWN;
1778 usb3->driver = NULL;
1779 renesas_usb3_stop_controller(usb3);
1781 pm_runtime_put(usb3_to_dev(usb3));
1782 pm_runtime_disable(usb3_to_dev(usb3));
1787 static int renesas_usb3_get_frame(struct usb_gadget *_gadget)
1792 static int renesas_usb3_pullup(struct usb_gadget *gadget, int is_on)
1794 struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget);
1796 usb3->softconnect = !!is_on;
1801 static int renesas_usb3_set_selfpowered(struct usb_gadget *gadget, int is_self)
1803 gadget->is_selfpowered = !!is_self;
1808 static const struct usb_gadget_ops renesas_usb3_gadget_ops = {
1809 .get_frame = renesas_usb3_get_frame,
1810 .udc_start = renesas_usb3_start,
1811 .udc_stop = renesas_usb3_stop,
1812 .pullup = renesas_usb3_pullup,
1813 .set_selfpowered = renesas_usb3_set_selfpowered,
1816 /*------- platform_driver ------------------------------------------------*/
1817 static int renesas_usb3_remove(struct platform_device *pdev)
1819 struct renesas_usb3 *usb3 = platform_get_drvdata(pdev);
1821 usb_del_gadget_udc(&usb3->gadget);
1823 __renesas_usb3_ep_free_request(usb3->ep0_req);
1828 static int renesas_usb3_init_ep(struct renesas_usb3 *usb3, struct device *dev,
1829 const struct renesas_usb3_priv *priv)
1831 struct renesas_usb3_ep *usb3_ep;
1834 /* calculate num_usb3_eps from renesas_usb3_priv */
1835 usb3->num_usb3_eps = priv->ramsize_per_ramif * priv->num_ramif * 2 /
1836 priv->ramsize_per_pipe + 1;
1838 if (usb3->num_usb3_eps > USB3_MAX_NUM_PIPES)
1839 usb3->num_usb3_eps = USB3_MAX_NUM_PIPES;
1841 usb3->usb3_ep = devm_kzalloc(dev, sizeof(*usb3_ep) * usb3->num_usb3_eps,
1846 dev_dbg(dev, "%s: num_usb3_eps = %d\n", __func__, usb3->num_usb3_eps);
1848 * This driver prepares pipes as the followings:
1849 * - odd pipes = IN pipe
1850 * - even pipes = OUT pipe (except pipe 0)
1852 usb3_for_each_ep(usb3_ep, usb3, i) {
1853 snprintf(usb3_ep->ep_name, sizeof(usb3_ep->ep_name), "ep%d", i);
1854 usb3_ep->usb3 = usb3;
1856 usb3_ep->ep.name = usb3_ep->ep_name;
1857 usb3_ep->ep.ops = &renesas_usb3_ep_ops;
1858 INIT_LIST_HEAD(&usb3_ep->queue);
1859 INIT_LIST_HEAD(&usb3_ep->ep.ep_list);
1861 /* for control pipe */
1862 usb3->gadget.ep0 = &usb3_ep->ep;
1863 usb_ep_set_maxpacket_limit(&usb3_ep->ep,
1864 USB3_EP0_SS_MAX_PACKET_SIZE);
1865 usb3_ep->ep.caps.type_control = true;
1866 usb3_ep->ep.caps.dir_in = true;
1867 usb3_ep->ep.caps.dir_out = true;
1871 /* for bulk or interrupt pipe */
1872 usb_ep_set_maxpacket_limit(&usb3_ep->ep, ~0);
1873 list_add_tail(&usb3_ep->ep.ep_list, &usb3->gadget.ep_list);
1874 usb3_ep->ep.caps.type_bulk = true;
1875 usb3_ep->ep.caps.type_int = true;
1877 usb3_ep->ep.caps.dir_in = true;
1879 usb3_ep->ep.caps.dir_out = true;
1885 static void renesas_usb3_init_ram(struct renesas_usb3 *usb3, struct device *dev,
1886 const struct renesas_usb3_priv *priv)
1888 struct renesas_usb3_ep *usb3_ep;
1890 u32 ramif[2], basead[2]; /* index 0 = for IN pipes */
1891 u32 *cur_ramif, *cur_basead;
1894 memset(ramif, 0, sizeof(ramif));
1895 memset(basead, 0, sizeof(basead));
1898 * This driver prepares pipes as the followings:
1899 * - all pipes = the same size as "ramsize_per_pipe"
1900 * Please refer to the "Method of Specifying RAM Mapping"
1902 usb3_for_each_ep(usb3_ep, usb3, i) {
1904 continue; /* out of scope if ep num = 0 */
1905 if (usb3_ep->ep.caps.dir_in) {
1906 cur_ramif = &ramif[0];
1907 cur_basead = &basead[0];
1909 cur_ramif = &ramif[1];
1910 cur_basead = &basead[1];
1913 if (*cur_basead > priv->ramsize_per_ramif)
1914 continue; /* out of memory for IN or OUT pipe */
1916 /* calculate rammap_val */
1917 val = PN_RAMMAP_RAMIF(*cur_ramif);
1918 val |= usb3_calc_ramarea(priv->ramsize_per_pipe);
1919 val |= PN_RAMMAP_BASEAD(*cur_basead);
1920 usb3_ep->rammap_val = val;
1922 dev_dbg(dev, "ep%2d: val = %08x, ramif = %d, base = %x\n",
1923 i, val, *cur_ramif, *cur_basead);
1925 /* update current ramif */
1926 if (*cur_ramif + 1 == priv->num_ramif) {
1928 *cur_basead += priv->ramsize_per_pipe;
1935 static const struct renesas_usb3_priv renesas_usb3_priv_r8a7795 = {
1936 .ramsize_per_ramif = SZ_16K,
1938 .ramsize_per_pipe = SZ_4K,
1939 .workaround_for_vbus = true,
1942 static const struct of_device_id usb3_of_match[] = {
1944 .compatible = "renesas,r8a7795-usb3-peri",
1945 .data = &renesas_usb3_priv_r8a7795,
1949 MODULE_DEVICE_TABLE(of, usb3_of_match);
1951 static int renesas_usb3_probe(struct platform_device *pdev)
1953 struct renesas_usb3 *usb3;
1954 struct resource *res;
1955 const struct of_device_id *match;
1957 const struct renesas_usb3_priv *priv;
1959 match = of_match_node(usb3_of_match, pdev->dev.of_node);
1964 irq = platform_get_irq(pdev, 0);
1968 usb3 = devm_kzalloc(&pdev->dev, sizeof(*usb3), GFP_KERNEL);
1972 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1973 usb3->reg = devm_ioremap_resource(&pdev->dev, res);
1974 if (IS_ERR(usb3->reg))
1975 return PTR_ERR(usb3->reg);
1977 platform_set_drvdata(pdev, usb3);
1978 spin_lock_init(&usb3->lock);
1980 usb3->gadget.ops = &renesas_usb3_gadget_ops;
1981 usb3->gadget.name = udc_name;
1982 usb3->gadget.max_speed = USB_SPEED_SUPER;
1983 INIT_LIST_HEAD(&usb3->gadget.ep_list);
1984 ret = renesas_usb3_init_ep(usb3, &pdev->dev, priv);
1987 renesas_usb3_init_ram(usb3, &pdev->dev, priv);
1989 ret = devm_request_irq(&pdev->dev, irq, renesas_usb3_irq, 0,
1990 dev_name(&pdev->dev), usb3);
1994 /* for ep0 handling */
1995 usb3->ep0_req = __renesas_usb3_ep_alloc_request(GFP_KERNEL);
1999 ret = usb_add_gadget_udc(&pdev->dev, &usb3->gadget);
2003 usb3->workaround_for_vbus = priv->workaround_for_vbus;
2005 dev_info(&pdev->dev, "probed\n");
2010 __renesas_usb3_ep_free_request(usb3->ep0_req);
2015 static struct platform_driver renesas_usb3_driver = {
2016 .probe = renesas_usb3_probe,
2017 .remove = renesas_usb3_remove,
2019 .name = (char *)udc_name,
2020 .of_match_table = of_match_ptr(usb3_of_match),
2023 module_platform_driver(renesas_usb3_driver);
2025 MODULE_DESCRIPTION("Renesas USB3.0 Peripheral driver");
2026 MODULE_LICENSE("GPL v2");
2027 MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>");
2028 MODULE_ALIAS("platform:renesas_usb3");