1 // SPDX-License-Identifier: GPL-2.0
3 * Renesas USB3.0 Peripheral driver (USB gadget)
5 * Copyright (C) 2015-2017 Renesas Electronics Corporation
8 #include <linux/debugfs.h>
9 #include <linux/delay.h>
10 #include <linux/dma-mapping.h>
11 #include <linux/err.h>
12 #include <linux/extcon-provider.h>
13 #include <linux/interrupt.h>
15 #include <linux/module.h>
16 #include <linux/of_device.h>
17 #include <linux/phy/phy.h>
18 #include <linux/platform_device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/sizes.h>
21 #include <linux/slab.h>
22 #include <linux/string.h>
23 #include <linux/sys_soc.h>
24 #include <linux/uaccess.h>
25 #include <linux/usb/ch9.h>
26 #include <linux/usb/gadget.h>
27 #include <linux/usb/of.h>
28 #include <linux/usb/role.h>
30 /* register definitions */
31 #define USB3_AXI_INT_STA 0x008
32 #define USB3_AXI_INT_ENA 0x00c
33 #define USB3_DMA_INT_STA 0x010
34 #define USB3_DMA_INT_ENA 0x014
35 #define USB3_DMA_CH0_CON(n) (0x030 + ((n) - 1) * 0x10) /* n = 1 to 4 */
36 #define USB3_DMA_CH0_PRD_ADR(n) (0x034 + ((n) - 1) * 0x10) /* n = 1 to 4 */
37 #define USB3_USB_COM_CON 0x200
38 #define USB3_USB20_CON 0x204
39 #define USB3_USB30_CON 0x208
40 #define USB3_USB_STA 0x210
41 #define USB3_DRD_CON 0x218
42 #define USB3_USB_INT_STA_1 0x220
43 #define USB3_USB_INT_STA_2 0x224
44 #define USB3_USB_INT_ENA_1 0x228
45 #define USB3_USB_INT_ENA_2 0x22c
46 #define USB3_STUP_DAT_0 0x230
47 #define USB3_STUP_DAT_1 0x234
48 #define USB3_USB_OTG_STA 0x268
49 #define USB3_USB_OTG_INT_STA 0x26c
50 #define USB3_USB_OTG_INT_ENA 0x270
51 #define USB3_P0_MOD 0x280
52 #define USB3_P0_CON 0x288
53 #define USB3_P0_STA 0x28c
54 #define USB3_P0_INT_STA 0x290
55 #define USB3_P0_INT_ENA 0x294
56 #define USB3_P0_LNG 0x2a0
57 #define USB3_P0_READ 0x2a4
58 #define USB3_P0_WRITE 0x2a8
59 #define USB3_PIPE_COM 0x2b0
60 #define USB3_PN_MOD 0x2c0
61 #define USB3_PN_RAMMAP 0x2c4
62 #define USB3_PN_CON 0x2c8
63 #define USB3_PN_STA 0x2cc
64 #define USB3_PN_INT_STA 0x2d0
65 #define USB3_PN_INT_ENA 0x2d4
66 #define USB3_PN_LNG 0x2e0
67 #define USB3_PN_READ 0x2e4
68 #define USB3_PN_WRITE 0x2e8
69 #define USB3_SSIFCMD 0x340
71 /* AXI_INT_ENA and AXI_INT_STA */
72 #define AXI_INT_DMAINT BIT(31)
73 #define AXI_INT_EPCINT BIT(30)
74 /* PRD's n = from 1 to 4 */
75 #define AXI_INT_PRDEN_CLR_STA_SHIFT(n) (16 + (n) - 1)
76 #define AXI_INT_PRDERR_STA_SHIFT(n) (0 + (n) - 1)
77 #define AXI_INT_PRDEN_CLR_STA(n) (1 << AXI_INT_PRDEN_CLR_STA_SHIFT(n))
78 #define AXI_INT_PRDERR_STA(n) (1 << AXI_INT_PRDERR_STA_SHIFT(n))
80 /* DMA_INT_ENA and DMA_INT_STA */
81 #define DMA_INT(n) BIT(n)
84 #define DMA_CON_PIPE_DIR BIT(15) /* 1: In Transfer */
85 #define DMA_CON_PIPE_NO_SHIFT 8
86 #define DMA_CON_PIPE_NO_MASK GENMASK(12, DMA_CON_PIPE_NO_SHIFT)
87 #define DMA_COM_PIPE_NO(n) (((n) << DMA_CON_PIPE_NO_SHIFT) & \
89 #define DMA_CON_PRD_EN BIT(0)
92 #define LCLKSEL_LSEL BIT(18)
95 #define USB_COM_CON_CONF BIT(24)
96 #define USB_COM_CON_PN_WDATAIF_NL BIT(23)
97 #define USB_COM_CON_PN_RDATAIF_NL BIT(22)
98 #define USB_COM_CON_PN_LSTTR_PP BIT(21)
99 #define USB_COM_CON_SPD_MODE BIT(17)
100 #define USB_COM_CON_EP0_EN BIT(16)
101 #define USB_COM_CON_DEV_ADDR_SHIFT 8
102 #define USB_COM_CON_DEV_ADDR_MASK GENMASK(14, USB_COM_CON_DEV_ADDR_SHIFT)
103 #define USB_COM_CON_DEV_ADDR(n) (((n) << USB_COM_CON_DEV_ADDR_SHIFT) & \
104 USB_COM_CON_DEV_ADDR_MASK)
105 #define USB_COM_CON_RX_DETECTION BIT(1)
106 #define USB_COM_CON_PIPE_CLR BIT(0)
109 #define USB20_CON_B2_PUE BIT(31)
110 #define USB20_CON_B2_SUSPEND BIT(24)
111 #define USB20_CON_B2_CONNECT BIT(17)
112 #define USB20_CON_B2_TSTMOD_SHIFT 8
113 #define USB20_CON_B2_TSTMOD_MASK GENMASK(10, USB20_CON_B2_TSTMOD_SHIFT)
114 #define USB20_CON_B2_TSTMOD(n) (((n) << USB20_CON_B2_TSTMOD_SHIFT) & \
115 USB20_CON_B2_TSTMOD_MASK)
116 #define USB20_CON_B2_TSTMOD_EN BIT(0)
119 #define USB30_CON_POW_SEL_SHIFT 24
120 #define USB30_CON_POW_SEL_MASK GENMASK(26, USB30_CON_POW_SEL_SHIFT)
121 #define USB30_CON_POW_SEL_IN_U3 BIT(26)
122 #define USB30_CON_POW_SEL_IN_DISCON 0
123 #define USB30_CON_POW_SEL_P2_TO_P0 BIT(25)
124 #define USB30_CON_POW_SEL_P0_TO_P3 BIT(24)
125 #define USB30_CON_POW_SEL_P0_TO_P2 0
126 #define USB30_CON_B3_PLLWAKE BIT(23)
127 #define USB30_CON_B3_CONNECT BIT(17)
128 #define USB30_CON_B3_HOTRST_CMP BIT(1)
131 #define USB_STA_SPEED_MASK (BIT(2) | BIT(1))
132 #define USB_STA_SPEED_HS BIT(2)
133 #define USB_STA_SPEED_FS BIT(1)
134 #define USB_STA_SPEED_SS 0
135 #define USB_STA_VBUS_STA BIT(0)
138 #define DRD_CON_PERI_CON BIT(24)
139 #define DRD_CON_VBOUT BIT(0)
141 /* USB_INT_ENA_1 and USB_INT_STA_1 */
142 #define USB_INT_1_B3_PLLWKUP BIT(31)
143 #define USB_INT_1_B3_LUPSUCS BIT(30)
144 #define USB_INT_1_B3_DISABLE BIT(27)
145 #define USB_INT_1_B3_WRMRST BIT(21)
146 #define USB_INT_1_B3_HOTRST BIT(20)
147 #define USB_INT_1_B2_USBRST BIT(12)
148 #define USB_INT_1_B2_L1SPND BIT(11)
149 #define USB_INT_1_B2_SPND BIT(9)
150 #define USB_INT_1_B2_RSUM BIT(8)
151 #define USB_INT_1_SPEED BIT(1)
152 #define USB_INT_1_VBUS_CNG BIT(0)
154 /* USB_INT_ENA_2 and USB_INT_STA_2 */
155 #define USB_INT_2_PIPE(n) BIT(n)
157 /* USB_OTG_STA, USB_OTG_INT_STA and USB_OTG_INT_ENA */
158 #define USB_OTG_IDMON BIT(4)
161 #define P0_MOD_DIR BIT(6)
163 /* P0_CON and PN_CON */
164 #define PX_CON_BYTE_EN_MASK (BIT(10) | BIT(9))
165 #define PX_CON_BYTE_EN_SHIFT 9
166 #define PX_CON_BYTE_EN_BYTES(n) (((n) << PX_CON_BYTE_EN_SHIFT) & \
168 #define PX_CON_SEND BIT(8)
171 #define P0_CON_ST_RES_MASK (BIT(27) | BIT(26))
172 #define P0_CON_ST_RES_FORCE_STALL BIT(27)
173 #define P0_CON_ST_RES_NORMAL BIT(26)
174 #define P0_CON_ST_RES_FORCE_NRDY 0
175 #define P0_CON_OT_RES_MASK (BIT(25) | BIT(24))
176 #define P0_CON_OT_RES_FORCE_STALL BIT(25)
177 #define P0_CON_OT_RES_NORMAL BIT(24)
178 #define P0_CON_OT_RES_FORCE_NRDY 0
179 #define P0_CON_IN_RES_MASK (BIT(17) | BIT(16))
180 #define P0_CON_IN_RES_FORCE_STALL BIT(17)
181 #define P0_CON_IN_RES_NORMAL BIT(16)
182 #define P0_CON_IN_RES_FORCE_NRDY 0
183 #define P0_CON_RES_WEN BIT(7)
184 #define P0_CON_BCLR BIT(1)
186 /* P0_STA and PN_STA */
187 #define PX_STA_BUFSTS BIT(0)
189 /* P0_INT_ENA and P0_INT_STA */
190 #define P0_INT_STSED BIT(18)
191 #define P0_INT_STSST BIT(17)
192 #define P0_INT_SETUP BIT(16)
193 #define P0_INT_RCVNL BIT(8)
194 #define P0_INT_ERDY BIT(7)
195 #define P0_INT_FLOW BIT(6)
196 #define P0_INT_STALL BIT(2)
197 #define P0_INT_NRDY BIT(1)
198 #define P0_INT_BFRDY BIT(0)
199 #define P0_INT_ALL_BITS (P0_INT_STSED | P0_INT_SETUP | P0_INT_BFRDY)
202 #define PN_MOD_DIR BIT(6)
203 #define PN_MOD_TYPE_SHIFT 4
204 #define PN_MOD_TYPE_MASK GENMASK(5, PN_MOD_TYPE_SHIFT)
205 #define PN_MOD_TYPE(n) (((n) << PN_MOD_TYPE_SHIFT) & \
207 #define PN_MOD_EPNUM_MASK GENMASK(3, 0)
208 #define PN_MOD_EPNUM(n) ((n) & PN_MOD_EPNUM_MASK)
211 #define PN_RAMMAP_RAMAREA_SHIFT 29
212 #define PN_RAMMAP_RAMAREA_MASK GENMASK(31, PN_RAMMAP_RAMAREA_SHIFT)
213 #define PN_RAMMAP_RAMAREA_16KB BIT(31)
214 #define PN_RAMMAP_RAMAREA_8KB (BIT(30) | BIT(29))
215 #define PN_RAMMAP_RAMAREA_4KB BIT(30)
216 #define PN_RAMMAP_RAMAREA_2KB BIT(29)
217 #define PN_RAMMAP_RAMAREA_1KB 0
218 #define PN_RAMMAP_MPKT_SHIFT 16
219 #define PN_RAMMAP_MPKT_MASK GENMASK(26, PN_RAMMAP_MPKT_SHIFT)
220 #define PN_RAMMAP_MPKT(n) (((n) << PN_RAMMAP_MPKT_SHIFT) & \
222 #define PN_RAMMAP_RAMIF_SHIFT 14
223 #define PN_RAMMAP_RAMIF_MASK GENMASK(15, PN_RAMMAP_RAMIF_SHIFT)
224 #define PN_RAMMAP_RAMIF(n) (((n) << PN_RAMMAP_RAMIF_SHIFT) & \
225 PN_RAMMAP_RAMIF_MASK)
226 #define PN_RAMMAP_BASEAD_MASK GENMASK(13, 0)
227 #define PN_RAMMAP_BASEAD(offs) (((offs) >> 3) & PN_RAMMAP_BASEAD_MASK)
228 #define PN_RAMMAP_DATA(area, ramif, basead) ((PN_RAMMAP_##area) | \
229 (PN_RAMMAP_RAMIF(ramif)) | \
230 (PN_RAMMAP_BASEAD(basead)))
233 #define PN_CON_EN BIT(31)
234 #define PN_CON_DATAIF_EN BIT(30)
235 #define PN_CON_RES_MASK (BIT(17) | BIT(16))
236 #define PN_CON_RES_FORCE_STALL BIT(17)
237 #define PN_CON_RES_NORMAL BIT(16)
238 #define PN_CON_RES_FORCE_NRDY 0
239 #define PN_CON_LAST BIT(11)
240 #define PN_CON_RES_WEN BIT(7)
241 #define PN_CON_CLR BIT(0)
243 /* PN_INT_STA and PN_INT_ENA */
244 #define PN_INT_LSTTR BIT(4)
245 #define PN_INT_BFRDY BIT(0)
248 #define SSIFCMD_URES_U2 BIT(9)
249 #define SSIFCMD_URES_U1 BIT(8)
250 #define SSIFCMD_UDIR_U2 BIT(7)
251 #define SSIFCMD_UDIR_U1 BIT(6)
252 #define SSIFCMD_UREQ_U2 BIT(5)
253 #define SSIFCMD_UREQ_U1 BIT(4)
255 #define USB3_EP0_SS_MAX_PACKET_SIZE 512
256 #define USB3_EP0_HSFS_MAX_PACKET_SIZE 64
257 #define USB3_EP0_BUF_SIZE 8
258 #define USB3_MAX_NUM_PIPES 6 /* This includes PIPE 0 */
259 #define USB3_WAIT_US 3
260 #define USB3_DMA_NUM_SETTING_AREA 4
262 * To avoid double-meaning of "0" (xferred 65536 bytes or received zlp if
263 * buffer size is 65536), this driver uses the maximum size per a entry is
266 #define USB3_DMA_MAX_XFER_SIZE 32768
267 #define USB3_DMA_PRD_SIZE 4096
271 /* Physical Region Descriptor Table */
272 struct renesas_usb3_prd {
274 #define USB3_PRD1_E BIT(30) /* the end of chain */
275 #define USB3_PRD1_U BIT(29) /* completion of transfer */
276 #define USB3_PRD1_D BIT(28) /* Error occurred */
277 #define USB3_PRD1_INT BIT(27) /* Interrupt occurred */
278 #define USB3_PRD1_LST BIT(26) /* Last Packet */
279 #define USB3_PRD1_B_INC BIT(24)
280 #define USB3_PRD1_MPS_8 0
281 #define USB3_PRD1_MPS_16 BIT(21)
282 #define USB3_PRD1_MPS_32 BIT(22)
283 #define USB3_PRD1_MPS_64 (BIT(22) | BIT(21))
284 #define USB3_PRD1_MPS_512 BIT(23)
285 #define USB3_PRD1_MPS_1024 (BIT(23) | BIT(21))
286 #define USB3_PRD1_MPS_RESERVED (BIT(23) | BIT(22) | BIT(21))
287 #define USB3_PRD1_SIZE_MASK GENMASK(15, 0)
291 #define USB3_DMA_NUM_PRD_ENTRIES (USB3_DMA_PRD_SIZE / \
292 sizeof(struct renesas_usb3_prd))
293 #define USB3_DMA_MAX_XFER_SIZE_ALL_PRDS (USB3_DMA_PRD_SIZE / \
294 sizeof(struct renesas_usb3_prd) * \
295 USB3_DMA_MAX_XFER_SIZE)
297 struct renesas_usb3_dma {
298 struct renesas_usb3_prd *prd;
300 int num; /* Setting area number (from 1 to 4) */
304 struct renesas_usb3_request {
305 struct usb_request req;
306 struct list_head queue;
309 #define USB3_EP_NAME_SIZE 8
310 struct renesas_usb3_ep {
312 struct renesas_usb3 *usb3;
313 struct renesas_usb3_dma *dma;
315 char ep_name[USB3_EP_NAME_SIZE];
316 struct list_head queue;
324 struct renesas_usb3_priv {
325 int ramsize_per_ramif; /* unit = bytes */
327 int ramsize_per_pipe; /* unit = bytes */
328 bool workaround_for_vbus; /* if true, don't check vbus signal */
331 struct renesas_usb3 {
334 struct usb_gadget gadget;
335 struct usb_gadget_driver *driver;
336 struct extcon_dev *extcon;
337 struct work_struct extcon_work;
339 struct dentry *dentry;
341 struct usb_role_switch *role_sw;
342 struct device *host_dev;
343 struct work_struct role_work;
346 struct renesas_usb3_ep *usb3_ep;
349 struct renesas_usb3_dma dma[USB3_DMA_NUM_SETTING_AREA];
354 struct usb_request *ep0_req;
356 enum usb_role connection_state;
358 u8 ep0_buf[USB3_EP0_BUF_SIZE];
360 bool workaround_for_vbus;
361 bool extcon_host; /* check id and set EXTCON_USB_HOST */
362 bool extcon_usb; /* check vbus and set EXTCON_USB */
363 bool forced_b_device;
364 bool start_to_connect;
365 bool role_sw_by_connector;
368 #define gadget_to_renesas_usb3(_gadget) \
369 container_of(_gadget, struct renesas_usb3, gadget)
370 #define renesas_usb3_to_gadget(renesas_usb3) (&renesas_usb3->gadget)
371 #define usb3_to_dev(_usb3) (_usb3->gadget.dev.parent)
373 #define usb_ep_to_usb3_ep(_ep) container_of(_ep, struct renesas_usb3_ep, ep)
374 #define usb3_ep_to_usb3(_usb3_ep) (_usb3_ep->usb3)
375 #define usb_req_to_usb3_req(_req) container_of(_req, \
376 struct renesas_usb3_request, req)
378 #define usb3_get_ep(usb3, n) ((usb3)->usb3_ep + (n))
379 #define usb3_for_each_ep(usb3_ep, usb3, i) \
380 for ((i) = 0, usb3_ep = usb3_get_ep(usb3, (i)); \
381 (i) < (usb3)->num_usb3_eps; \
382 (i)++, usb3_ep = usb3_get_ep(usb3, (i)))
384 #define usb3_get_dma(usb3, i) (&(usb3)->dma[i])
385 #define usb3_for_each_dma(usb3, dma, i) \
386 for ((i) = 0, dma = usb3_get_dma((usb3), (i)); \
387 (i) < USB3_DMA_NUM_SETTING_AREA; \
388 (i)++, dma = usb3_get_dma((usb3), (i)))
390 static const char udc_name[] = "renesas_usb3";
392 static bool use_dma = 1;
393 module_param(use_dma, bool, 0644);
394 MODULE_PARM_DESC(use_dma, "use dedicated DMAC");
396 static void usb3_write(struct renesas_usb3 *usb3, u32 data, u32 offs)
398 iowrite32(data, usb3->reg + offs);
401 static u32 usb3_read(struct renesas_usb3 *usb3, u32 offs)
403 return ioread32(usb3->reg + offs);
406 static void usb3_set_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs)
408 u32 val = usb3_read(usb3, offs);
411 usb3_write(usb3, val, offs);
414 static void usb3_clear_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs)
416 u32 val = usb3_read(usb3, offs);
419 usb3_write(usb3, val, offs);
422 static int usb3_wait(struct renesas_usb3 *usb3, u32 reg, u32 mask,
427 for (i = 0; i < USB3_WAIT_US; i++) {
428 if ((usb3_read(usb3, reg) & mask) == expected)
433 dev_dbg(usb3_to_dev(usb3), "%s: timed out (%8x, %08x, %08x)\n",
434 __func__, reg, mask, expected);
439 static void renesas_usb3_extcon_work(struct work_struct *work)
441 struct renesas_usb3 *usb3 = container_of(work, struct renesas_usb3,
444 extcon_set_state_sync(usb3->extcon, EXTCON_USB_HOST, usb3->extcon_host);
445 extcon_set_state_sync(usb3->extcon, EXTCON_USB, usb3->extcon_usb);
448 static void usb3_enable_irq_1(struct renesas_usb3 *usb3, u32 bits)
450 usb3_set_bit(usb3, bits, USB3_USB_INT_ENA_1);
453 static void usb3_disable_irq_1(struct renesas_usb3 *usb3, u32 bits)
455 usb3_clear_bit(usb3, bits, USB3_USB_INT_ENA_1);
458 static void usb3_enable_pipe_irq(struct renesas_usb3 *usb3, int num)
460 usb3_set_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2);
463 static void usb3_disable_pipe_irq(struct renesas_usb3 *usb3, int num)
465 usb3_clear_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2);
468 static bool usb3_is_host(struct renesas_usb3 *usb3)
470 return !(usb3_read(usb3, USB3_DRD_CON) & DRD_CON_PERI_CON);
473 static void usb3_init_axi_bridge(struct renesas_usb3 *usb3)
476 usb3_write(usb3, ~0, USB3_DMA_INT_STA);
477 usb3_write(usb3, 0, USB3_DMA_INT_ENA);
478 usb3_set_bit(usb3, AXI_INT_DMAINT | AXI_INT_EPCINT, USB3_AXI_INT_ENA);
481 static void usb3_init_epc_registers(struct renesas_usb3 *usb3)
483 usb3_write(usb3, ~0, USB3_USB_INT_STA_1);
484 if (!usb3->workaround_for_vbus)
485 usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG);
488 static bool usb3_wakeup_usb2_phy(struct renesas_usb3 *usb3)
490 if (!(usb3_read(usb3, USB3_USB20_CON) & USB20_CON_B2_SUSPEND))
491 return true; /* already waked it up */
493 usb3_clear_bit(usb3, USB20_CON_B2_SUSPEND, USB3_USB20_CON);
494 usb3_enable_irq_1(usb3, USB_INT_1_B2_RSUM);
499 static void usb3_usb2_pullup(struct renesas_usb3 *usb3, int pullup)
501 u32 bits = USB20_CON_B2_PUE | USB20_CON_B2_CONNECT;
503 if (usb3->softconnect && pullup)
504 usb3_set_bit(usb3, bits, USB3_USB20_CON);
506 usb3_clear_bit(usb3, bits, USB3_USB20_CON);
509 static void usb3_set_test_mode(struct renesas_usb3 *usb3)
511 u32 val = usb3_read(usb3, USB3_USB20_CON);
513 val &= ~USB20_CON_B2_TSTMOD_MASK;
514 val |= USB20_CON_B2_TSTMOD(usb3->test_mode);
515 usb3_write(usb3, val | USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON);
516 if (!usb3->test_mode)
517 usb3_clear_bit(usb3, USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON);
520 static void usb3_start_usb2_connection(struct renesas_usb3 *usb3)
522 usb3->disabled_count++;
523 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
524 usb3_set_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON);
525 usb3_usb2_pullup(usb3, 1);
528 static int usb3_is_usb3_phy_in_u3(struct renesas_usb3 *usb3)
530 return usb3_read(usb3, USB3_USB30_CON) & USB30_CON_POW_SEL_IN_U3;
533 static bool usb3_wakeup_usb3_phy(struct renesas_usb3 *usb3)
535 if (!usb3_is_usb3_phy_in_u3(usb3))
536 return true; /* already waked it up */
538 usb3_set_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON);
539 usb3_enable_irq_1(usb3, USB_INT_1_B3_PLLWKUP);
544 static u16 usb3_feature_get_un_enabled(struct renesas_usb3 *usb3)
546 u32 mask_u2 = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2;
547 u32 mask_u1 = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1;
548 u32 val = usb3_read(usb3, USB3_SSIFCMD);
551 /* Enables {U2,U1} if the bits of UDIR and UREQ are set to 0 */
552 if (!(val & mask_u2))
553 ret |= 1 << USB_DEV_STAT_U2_ENABLED;
554 if (!(val & mask_u1))
555 ret |= 1 << USB_DEV_STAT_U1_ENABLED;
560 static void usb3_feature_u2_enable(struct renesas_usb3 *usb3, bool enable)
562 u32 bits = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2;
564 /* Enables U2 if the bits of UDIR and UREQ are set to 0 */
566 usb3_clear_bit(usb3, bits, USB3_SSIFCMD);
568 usb3_set_bit(usb3, bits, USB3_SSIFCMD);
571 static void usb3_feature_u1_enable(struct renesas_usb3 *usb3, bool enable)
573 u32 bits = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1;
575 /* Enables U1 if the bits of UDIR and UREQ are set to 0 */
577 usb3_clear_bit(usb3, bits, USB3_SSIFCMD);
579 usb3_set_bit(usb3, bits, USB3_SSIFCMD);
582 static void usb3_start_operation_for_usb3(struct renesas_usb3 *usb3)
584 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
585 usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON);
586 usb3_set_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON);
589 static void usb3_start_usb3_connection(struct renesas_usb3 *usb3)
591 usb3_start_operation_for_usb3(usb3);
592 usb3_set_bit(usb3, USB_COM_CON_RX_DETECTION, USB3_USB_COM_CON);
594 usb3_enable_irq_1(usb3, USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE |
598 static void usb3_stop_usb3_connection(struct renesas_usb3 *usb3)
600 usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON);
603 static void usb3_transition_to_default_state(struct renesas_usb3 *usb3,
606 usb3_set_bit(usb3, USB_INT_2_PIPE(0), USB3_USB_INT_ENA_2);
607 usb3_write(usb3, P0_INT_ALL_BITS, USB3_P0_INT_STA);
608 usb3_set_bit(usb3, P0_INT_ALL_BITS, USB3_P0_INT_ENA);
611 usb3_enable_irq_1(usb3, USB_INT_1_B3_WRMRST |
612 USB_INT_1_B3_HOTRST);
614 usb3_enable_irq_1(usb3, USB_INT_1_B2_SPND |
615 USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST);
618 static void usb3_connect(struct renesas_usb3 *usb3)
620 if (usb3_wakeup_usb3_phy(usb3))
621 usb3_start_usb3_connection(usb3);
624 static void usb3_reset_epc(struct renesas_usb3 *usb3)
626 usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
627 usb3_clear_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
628 usb3_set_bit(usb3, USB_COM_CON_PIPE_CLR, USB3_USB_COM_CON);
630 usb3_set_test_mode(usb3);
633 static void usb3_disconnect(struct renesas_usb3 *usb3)
635 usb3->disabled_count = 0;
636 usb3_usb2_pullup(usb3, 0);
637 usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON);
638 usb3_reset_epc(usb3);
639 usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM | USB_INT_1_B3_PLLWKUP |
640 USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE |
641 USB_INT_1_SPEED | USB_INT_1_B3_WRMRST |
642 USB_INT_1_B3_HOTRST | USB_INT_1_B2_SPND |
643 USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST);
644 usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON);
645 usb3_init_epc_registers(usb3);
648 usb3->driver->disconnect(&usb3->gadget);
651 static void usb3_check_vbus(struct renesas_usb3 *usb3)
653 if (usb3->workaround_for_vbus) {
656 usb3->extcon_usb = !!(usb3_read(usb3, USB3_USB_STA) &
658 if (usb3->extcon_usb)
661 usb3_disconnect(usb3);
663 schedule_work(&usb3->extcon_work);
667 static void renesas_usb3_role_work(struct work_struct *work)
669 struct renesas_usb3 *usb3 =
670 container_of(work, struct renesas_usb3, role_work);
672 usb_role_switch_set_role(usb3->role_sw, usb3->role);
675 static void usb3_set_mode(struct renesas_usb3 *usb3, bool host)
678 usb3_clear_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON);
680 usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON);
683 static void usb3_set_mode_by_role_sw(struct renesas_usb3 *usb3, bool host)
686 usb3->role = host ? USB_ROLE_HOST : USB_ROLE_DEVICE;
687 schedule_work(&usb3->role_work);
689 usb3_set_mode(usb3, host);
693 static void usb3_vbus_out(struct renesas_usb3 *usb3, bool enable)
696 usb3_set_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON);
698 usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON);
701 static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev)
705 spin_lock_irqsave(&usb3->lock, flags);
706 if (!usb3->role_sw_by_connector ||
707 usb3->connection_state != USB_ROLE_NONE) {
708 usb3_set_mode_by_role_sw(usb3, host);
709 usb3_vbus_out(usb3, a_dev);
711 /* for A-Peripheral or forced B-device mode */
712 if ((!host && a_dev) || usb3->start_to_connect)
714 spin_unlock_irqrestore(&usb3->lock, flags);
717 static bool usb3_is_a_device(struct renesas_usb3 *usb3)
719 return !(usb3_read(usb3, USB3_USB_OTG_STA) & USB_OTG_IDMON);
722 static void usb3_check_id(struct renesas_usb3 *usb3)
724 usb3->extcon_host = usb3_is_a_device(usb3);
726 if ((!usb3->role_sw_by_connector && usb3->extcon_host &&
727 !usb3->forced_b_device) || usb3->connection_state == USB_ROLE_HOST)
728 usb3_mode_config(usb3, true, true);
730 usb3_mode_config(usb3, false, false);
732 schedule_work(&usb3->extcon_work);
735 static void renesas_usb3_init_controller(struct renesas_usb3 *usb3)
737 usb3_init_axi_bridge(usb3);
738 usb3_init_epc_registers(usb3);
739 usb3_set_bit(usb3, USB_COM_CON_PN_WDATAIF_NL |
740 USB_COM_CON_PN_RDATAIF_NL | USB_COM_CON_PN_LSTTR_PP,
742 usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_STA);
743 usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_ENA);
746 usb3_check_vbus(usb3);
749 static void renesas_usb3_stop_controller(struct renesas_usb3 *usb3)
751 usb3_disconnect(usb3);
752 usb3_write(usb3, 0, USB3_P0_INT_ENA);
753 usb3_write(usb3, 0, USB3_USB_OTG_INT_ENA);
754 usb3_write(usb3, 0, USB3_USB_INT_ENA_1);
755 usb3_write(usb3, 0, USB3_USB_INT_ENA_2);
756 usb3_write(usb3, 0, USB3_AXI_INT_ENA);
759 static void usb3_irq_epc_int_1_pll_wakeup(struct renesas_usb3 *usb3)
761 usb3_disable_irq_1(usb3, USB_INT_1_B3_PLLWKUP);
762 usb3_clear_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON);
763 usb3_start_usb3_connection(usb3);
766 static void usb3_irq_epc_int_1_linkup_success(struct renesas_usb3 *usb3)
768 usb3_transition_to_default_state(usb3, true);
771 static void usb3_irq_epc_int_1_resume(struct renesas_usb3 *usb3)
773 usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM);
774 usb3_start_usb2_connection(usb3);
775 usb3_transition_to_default_state(usb3, false);
778 static void usb3_irq_epc_int_1_suspend(struct renesas_usb3 *usb3)
780 usb3_disable_irq_1(usb3, USB_INT_1_B2_SPND);
782 if (usb3->gadget.speed != USB_SPEED_UNKNOWN &&
783 usb3->gadget.state != USB_STATE_NOTATTACHED) {
784 if (usb3->driver && usb3->driver->suspend)
785 usb3->driver->suspend(&usb3->gadget);
786 usb_gadget_set_state(&usb3->gadget, USB_STATE_SUSPENDED);
790 static void usb3_irq_epc_int_1_disable(struct renesas_usb3 *usb3)
792 usb3_stop_usb3_connection(usb3);
793 if (usb3_wakeup_usb2_phy(usb3))
794 usb3_irq_epc_int_1_resume(usb3);
797 static void usb3_irq_epc_int_1_bus_reset(struct renesas_usb3 *usb3)
799 usb3_reset_epc(usb3);
800 if (usb3->disabled_count < 3)
801 usb3_start_usb3_connection(usb3);
803 usb3_start_usb2_connection(usb3);
806 static void usb3_irq_epc_int_1_vbus_change(struct renesas_usb3 *usb3)
808 usb3_check_vbus(usb3);
811 static void usb3_irq_epc_int_1_hot_reset(struct renesas_usb3 *usb3)
813 usb3_reset_epc(usb3);
814 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
816 /* This bit shall be set within 12ms from the start of HotReset */
817 usb3_set_bit(usb3, USB30_CON_B3_HOTRST_CMP, USB3_USB30_CON);
820 static void usb3_irq_epc_int_1_warm_reset(struct renesas_usb3 *usb3)
822 usb3_reset_epc(usb3);
823 usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON);
825 usb3_start_operation_for_usb3(usb3);
826 usb3_enable_irq_1(usb3, USB_INT_1_SPEED);
829 static void usb3_irq_epc_int_1_speed(struct renesas_usb3 *usb3)
831 u32 speed = usb3_read(usb3, USB3_USB_STA) & USB_STA_SPEED_MASK;
834 case USB_STA_SPEED_SS:
835 usb3->gadget.speed = USB_SPEED_SUPER;
836 usb3->gadget.ep0->maxpacket = USB3_EP0_SS_MAX_PACKET_SIZE;
838 case USB_STA_SPEED_HS:
839 usb3->gadget.speed = USB_SPEED_HIGH;
840 usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE;
842 case USB_STA_SPEED_FS:
843 usb3->gadget.speed = USB_SPEED_FULL;
844 usb3->gadget.ep0->maxpacket = USB3_EP0_HSFS_MAX_PACKET_SIZE;
847 usb3->gadget.speed = USB_SPEED_UNKNOWN;
852 static void usb3_irq_epc_int_1(struct renesas_usb3 *usb3, u32 int_sta_1)
854 if (int_sta_1 & USB_INT_1_B3_PLLWKUP)
855 usb3_irq_epc_int_1_pll_wakeup(usb3);
857 if (int_sta_1 & USB_INT_1_B3_LUPSUCS)
858 usb3_irq_epc_int_1_linkup_success(usb3);
860 if (int_sta_1 & USB_INT_1_B3_HOTRST)
861 usb3_irq_epc_int_1_hot_reset(usb3);
863 if (int_sta_1 & USB_INT_1_B3_WRMRST)
864 usb3_irq_epc_int_1_warm_reset(usb3);
866 if (int_sta_1 & USB_INT_1_B3_DISABLE)
867 usb3_irq_epc_int_1_disable(usb3);
869 if (int_sta_1 & USB_INT_1_B2_USBRST)
870 usb3_irq_epc_int_1_bus_reset(usb3);
872 if (int_sta_1 & USB_INT_1_B2_RSUM)
873 usb3_irq_epc_int_1_resume(usb3);
875 if (int_sta_1 & USB_INT_1_B2_SPND)
876 usb3_irq_epc_int_1_suspend(usb3);
878 if (int_sta_1 & USB_INT_1_SPEED)
879 usb3_irq_epc_int_1_speed(usb3);
881 if (int_sta_1 & USB_INT_1_VBUS_CNG)
882 usb3_irq_epc_int_1_vbus_change(usb3);
885 static struct renesas_usb3_request *__usb3_get_request(struct renesas_usb3_ep
888 return list_first_entry_or_null(&usb3_ep->queue,
889 struct renesas_usb3_request, queue);
892 static struct renesas_usb3_request *usb3_get_request(struct renesas_usb3_ep
895 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
896 struct renesas_usb3_request *usb3_req;
899 spin_lock_irqsave(&usb3->lock, flags);
900 usb3_req = __usb3_get_request(usb3_ep);
901 spin_unlock_irqrestore(&usb3->lock, flags);
906 static void __usb3_request_done(struct renesas_usb3_ep *usb3_ep,
907 struct renesas_usb3_request *usb3_req,
910 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
912 dev_dbg(usb3_to_dev(usb3), "giveback: ep%2d, %u, %u, %d\n",
913 usb3_ep->num, usb3_req->req.length, usb3_req->req.actual,
915 usb3_req->req.status = status;
916 usb3_ep->started = false;
917 list_del_init(&usb3_req->queue);
918 spin_unlock(&usb3->lock);
919 usb_gadget_giveback_request(&usb3_ep->ep, &usb3_req->req);
920 spin_lock(&usb3->lock);
923 static void usb3_request_done(struct renesas_usb3_ep *usb3_ep,
924 struct renesas_usb3_request *usb3_req, int status)
926 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
929 spin_lock_irqsave(&usb3->lock, flags);
930 __usb3_request_done(usb3_ep, usb3_req, status);
931 spin_unlock_irqrestore(&usb3->lock, flags);
934 static void usb3_irq_epc_pipe0_status_end(struct renesas_usb3 *usb3)
936 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
937 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
940 usb3_request_done(usb3_ep, usb3_req, 0);
942 usb3_set_test_mode(usb3);
945 static void usb3_get_setup_data(struct renesas_usb3 *usb3,
946 struct usb_ctrlrequest *ctrl)
948 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
949 u32 *data = (u32 *)ctrl;
951 *data++ = usb3_read(usb3, USB3_STUP_DAT_0);
952 *data = usb3_read(usb3, USB3_STUP_DAT_1);
954 /* update this driver's flag */
955 usb3_ep->dir_in = !!(ctrl->bRequestType & USB_DIR_IN);
958 static void usb3_set_p0_con_update_res(struct renesas_usb3 *usb3, u32 res)
960 u32 val = usb3_read(usb3, USB3_P0_CON);
962 val &= ~(P0_CON_ST_RES_MASK | P0_CON_OT_RES_MASK | P0_CON_IN_RES_MASK);
963 val |= res | P0_CON_RES_WEN;
964 usb3_write(usb3, val, USB3_P0_CON);
967 static void usb3_set_p0_con_for_ctrl_read_data(struct renesas_usb3 *usb3)
969 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY |
970 P0_CON_OT_RES_FORCE_STALL |
971 P0_CON_IN_RES_NORMAL);
974 static void usb3_set_p0_con_for_ctrl_read_status(struct renesas_usb3 *usb3)
976 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL |
977 P0_CON_OT_RES_FORCE_STALL |
978 P0_CON_IN_RES_NORMAL);
981 static void usb3_set_p0_con_for_ctrl_write_data(struct renesas_usb3 *usb3)
983 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY |
984 P0_CON_OT_RES_NORMAL |
985 P0_CON_IN_RES_FORCE_STALL);
988 static void usb3_set_p0_con_for_ctrl_write_status(struct renesas_usb3 *usb3)
990 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL |
991 P0_CON_OT_RES_NORMAL |
992 P0_CON_IN_RES_FORCE_STALL);
995 static void usb3_set_p0_con_for_no_data(struct renesas_usb3 *usb3)
997 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL |
998 P0_CON_OT_RES_FORCE_STALL |
999 P0_CON_IN_RES_FORCE_STALL);
1002 static void usb3_set_p0_con_stall(struct renesas_usb3 *usb3)
1004 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_STALL |
1005 P0_CON_OT_RES_FORCE_STALL |
1006 P0_CON_IN_RES_FORCE_STALL);
1009 static void usb3_set_p0_con_stop(struct renesas_usb3 *usb3)
1011 usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY |
1012 P0_CON_OT_RES_FORCE_NRDY |
1013 P0_CON_IN_RES_FORCE_NRDY);
1016 static int usb3_pn_change(struct renesas_usb3 *usb3, int num)
1018 if (num == 0 || num > usb3->num_usb3_eps)
1021 usb3_write(usb3, num, USB3_PIPE_COM);
1026 static void usb3_set_pn_con_update_res(struct renesas_usb3 *usb3, u32 res)
1028 u32 val = usb3_read(usb3, USB3_PN_CON);
1030 val &= ~PN_CON_RES_MASK;
1031 val |= res & PN_CON_RES_MASK;
1032 val |= PN_CON_RES_WEN;
1033 usb3_write(usb3, val, USB3_PN_CON);
1036 static void usb3_pn_start(struct renesas_usb3 *usb3)
1038 usb3_set_pn_con_update_res(usb3, PN_CON_RES_NORMAL);
1041 static void usb3_pn_stop(struct renesas_usb3 *usb3)
1043 usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_NRDY);
1046 static void usb3_pn_stall(struct renesas_usb3 *usb3)
1048 usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_STALL);
1051 static int usb3_pn_con_clear(struct renesas_usb3 *usb3)
1053 usb3_set_bit(usb3, PN_CON_CLR, USB3_PN_CON);
1055 return usb3_wait(usb3, USB3_PN_CON, PN_CON_CLR, 0);
1058 static bool usb3_is_transfer_complete(struct renesas_usb3_ep *usb3_ep,
1059 struct renesas_usb3_request *usb3_req)
1061 struct usb_request *req = &usb3_req->req;
1063 if ((!req->zero && req->actual == req->length) ||
1064 (req->actual % usb3_ep->ep.maxpacket) || (req->length == 0))
1070 static int usb3_wait_pipe_status(struct renesas_usb3_ep *usb3_ep, u32 mask)
1072 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1073 u32 sta_reg = usb3_ep->num ? USB3_PN_STA : USB3_P0_STA;
1075 return usb3_wait(usb3, sta_reg, mask, mask);
1078 static void usb3_set_px_con_send(struct renesas_usb3_ep *usb3_ep, int bytes,
1081 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1082 u32 con_reg = usb3_ep->num ? USB3_PN_CON : USB3_P0_CON;
1083 u32 val = usb3_read(usb3, con_reg);
1085 val |= PX_CON_SEND | PX_CON_BYTE_EN_BYTES(bytes);
1086 val |= (usb3_ep->num && last) ? PN_CON_LAST : 0;
1087 usb3_write(usb3, val, con_reg);
1090 static int usb3_write_pipe(struct renesas_usb3_ep *usb3_ep,
1091 struct renesas_usb3_request *usb3_req,
1094 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1096 int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual,
1097 usb3_ep->ep.maxpacket);
1098 u8 *buf = usb3_req->req.buf + usb3_req->req.actual;
1100 bool is_last = !len ? true : false;
1102 if (usb3_wait_pipe_status(usb3_ep, PX_STA_BUFSTS) < 0)
1105 /* Update gadget driver parameter */
1106 usb3_req->req.actual += len;
1108 /* Write data to the register */
1110 iowrite32_rep(usb3->reg + fifo_reg, buf, len / 4);
1111 buf += (len / 4) * 4;
1112 len %= 4; /* update len to use usb3_set_pX_con_send() */
1116 for (i = 0; i < len; i++)
1117 tmp |= buf[i] << (8 * i);
1118 usb3_write(usb3, tmp, fifo_reg);
1122 is_last = usb3_is_transfer_complete(usb3_ep, usb3_req);
1124 usb3_set_px_con_send(usb3_ep, len, is_last);
1126 return is_last ? 0 : -EAGAIN;
1129 static u32 usb3_get_received_length(struct renesas_usb3_ep *usb3_ep)
1131 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1132 u32 lng_reg = usb3_ep->num ? USB3_PN_LNG : USB3_P0_LNG;
1134 return usb3_read(usb3, lng_reg);
1137 static int usb3_read_pipe(struct renesas_usb3_ep *usb3_ep,
1138 struct renesas_usb3_request *usb3_req, u32 fifo_reg)
1140 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1142 int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual,
1143 usb3_get_received_length(usb3_ep));
1144 u8 *buf = usb3_req->req.buf + usb3_req->req.actual;
1150 /* Update gadget driver parameter */
1151 usb3_req->req.actual += len;
1153 /* Read data from the register */
1155 ioread32_rep(usb3->reg + fifo_reg, buf, len / 4);
1156 buf += (len / 4) * 4;
1161 tmp = usb3_read(usb3, fifo_reg);
1162 for (i = 0; i < len; i++)
1163 buf[i] = (tmp >> (8 * i)) & 0xff;
1166 return usb3_is_transfer_complete(usb3_ep, usb3_req) ? 0 : -EAGAIN;
1169 static void usb3_set_status_stage(struct renesas_usb3_ep *usb3_ep,
1170 struct renesas_usb3_request *usb3_req)
1172 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1174 if (usb3_ep->dir_in) {
1175 usb3_set_p0_con_for_ctrl_read_status(usb3);
1177 if (!usb3_req->req.length)
1178 usb3_set_p0_con_for_no_data(usb3);
1180 usb3_set_p0_con_for_ctrl_write_status(usb3);
1184 static void usb3_p0_xfer(struct renesas_usb3_ep *usb3_ep,
1185 struct renesas_usb3_request *usb3_req)
1189 if (usb3_ep->dir_in)
1190 ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_P0_WRITE);
1192 ret = usb3_read_pipe(usb3_ep, usb3_req, USB3_P0_READ);
1195 usb3_set_status_stage(usb3_ep, usb3_req);
1198 static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep,
1199 struct renesas_usb3_request *usb3_req)
1201 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1203 if (usb3_ep->started)
1206 usb3_ep->started = true;
1208 if (usb3_ep->dir_in) {
1209 usb3_set_bit(usb3, P0_MOD_DIR, USB3_P0_MOD);
1210 usb3_set_p0_con_for_ctrl_read_data(usb3);
1212 usb3_clear_bit(usb3, P0_MOD_DIR, USB3_P0_MOD);
1213 if (usb3_req->req.length)
1214 usb3_set_p0_con_for_ctrl_write_data(usb3);
1217 usb3_p0_xfer(usb3_ep, usb3_req);
1220 static void usb3_enable_dma_pipen(struct renesas_usb3 *usb3)
1222 usb3_set_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON);
1225 static void usb3_disable_dma_pipen(struct renesas_usb3 *usb3)
1227 usb3_clear_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON);
1230 static void usb3_enable_dma_irq(struct renesas_usb3 *usb3, int num)
1232 usb3_set_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA);
1235 static void usb3_disable_dma_irq(struct renesas_usb3 *usb3, int num)
1237 usb3_clear_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA);
1240 static u32 usb3_dma_mps_to_prd_word1(struct renesas_usb3_ep *usb3_ep)
1242 switch (usb3_ep->ep.maxpacket) {
1244 return USB3_PRD1_MPS_8;
1246 return USB3_PRD1_MPS_16;
1248 return USB3_PRD1_MPS_32;
1250 return USB3_PRD1_MPS_64;
1252 return USB3_PRD1_MPS_512;
1254 return USB3_PRD1_MPS_1024;
1256 return USB3_PRD1_MPS_RESERVED;
1260 static bool usb3_dma_get_setting_area(struct renesas_usb3_ep *usb3_ep,
1261 struct renesas_usb3_request *usb3_req)
1263 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1264 struct renesas_usb3_dma *dma;
1268 if (usb3_req->req.length > USB3_DMA_MAX_XFER_SIZE_ALL_PRDS) {
1269 dev_dbg(usb3_to_dev(usb3), "%s: the length is too big (%d)\n",
1270 __func__, usb3_req->req.length);
1274 /* The driver doesn't handle zero-length packet via dmac */
1275 if (!usb3_req->req.length)
1278 if (usb3_dma_mps_to_prd_word1(usb3_ep) == USB3_PRD1_MPS_RESERVED)
1281 usb3_for_each_dma(usb3, dma, i) {
1285 if (usb_gadget_map_request(&usb3->gadget, &usb3_req->req,
1286 usb3_ep->dir_in) < 0)
1298 static void usb3_dma_put_setting_area(struct renesas_usb3_ep *usb3_ep,
1299 struct renesas_usb3_request *usb3_req)
1301 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1303 struct renesas_usb3_dma *dma;
1305 usb3_for_each_dma(usb3, dma, i) {
1306 if (usb3_ep->dma == dma) {
1307 usb_gadget_unmap_request(&usb3->gadget, &usb3_req->req,
1310 usb3_ep->dma = NULL;
1316 static void usb3_dma_fill_prd(struct renesas_usb3_ep *usb3_ep,
1317 struct renesas_usb3_request *usb3_req)
1319 struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd;
1320 u32 remain = usb3_req->req.length;
1321 u32 dma = usb3_req->req.dma;
1326 len = min_t(u32, remain, USB3_DMA_MAX_XFER_SIZE) &
1327 USB3_PRD1_SIZE_MASK;
1328 cur_prd->word1 = usb3_dma_mps_to_prd_word1(usb3_ep) |
1329 USB3_PRD1_B_INC | len;
1333 if (!remain || (i + 1) < USB3_DMA_NUM_PRD_ENTRIES)
1340 cur_prd->word1 |= USB3_PRD1_E | USB3_PRD1_INT;
1341 if (usb3_ep->dir_in)
1342 cur_prd->word1 |= USB3_PRD1_LST;
1345 static void usb3_dma_kick_prd(struct renesas_usb3_ep *usb3_ep)
1347 struct renesas_usb3_dma *dma = usb3_ep->dma;
1348 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1349 u32 dma_con = DMA_COM_PIPE_NO(usb3_ep->num) | DMA_CON_PRD_EN;
1351 if (usb3_ep->dir_in)
1352 dma_con |= DMA_CON_PIPE_DIR;
1354 wmb(); /* prd entries should be in system memory here */
1356 usb3_write(usb3, 1 << usb3_ep->num, USB3_DMA_INT_STA);
1357 usb3_write(usb3, AXI_INT_PRDEN_CLR_STA(dma->num) |
1358 AXI_INT_PRDERR_STA(dma->num), USB3_AXI_INT_STA);
1360 usb3_write(usb3, dma->prd_dma, USB3_DMA_CH0_PRD_ADR(dma->num));
1361 usb3_write(usb3, dma_con, USB3_DMA_CH0_CON(dma->num));
1362 usb3_enable_dma_irq(usb3, usb3_ep->num);
1365 static void usb3_dma_stop_prd(struct renesas_usb3_ep *usb3_ep)
1367 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1368 struct renesas_usb3_dma *dma = usb3_ep->dma;
1370 usb3_disable_dma_irq(usb3, usb3_ep->num);
1371 usb3_write(usb3, 0, USB3_DMA_CH0_CON(dma->num));
1374 static int usb3_dma_update_status(struct renesas_usb3_ep *usb3_ep,
1375 struct renesas_usb3_request *usb3_req)
1377 struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd;
1378 struct usb_request *req = &usb3_req->req;
1383 rmb(); /* The controller updated prd entries */
1386 if (cur_prd->word1 & USB3_PRD1_D)
1388 if (cur_prd->word1 & USB3_PRD1_E)
1389 len = req->length % USB3_DMA_MAX_XFER_SIZE;
1391 len = USB3_DMA_MAX_XFER_SIZE;
1392 remain = cur_prd->word1 & USB3_PRD1_SIZE_MASK;
1393 req->actual += len - remain;
1395 if (cur_prd->word1 & USB3_PRD1_E ||
1396 (i + 1) < USB3_DMA_NUM_PRD_ENTRIES)
1406 static bool usb3_dma_try_start(struct renesas_usb3_ep *usb3_ep,
1407 struct renesas_usb3_request *usb3_req)
1409 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1414 if (usb3_dma_get_setting_area(usb3_ep, usb3_req)) {
1416 usb3_enable_dma_pipen(usb3);
1417 usb3_dma_fill_prd(usb3_ep, usb3_req);
1418 usb3_dma_kick_prd(usb3_ep);
1419 usb3_pn_start(usb3);
1426 static int usb3_dma_try_stop(struct renesas_usb3_ep *usb3_ep,
1427 struct renesas_usb3_request *usb3_req)
1429 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1430 unsigned long flags;
1433 spin_lock_irqsave(&usb3->lock, flags);
1437 if (!usb3_pn_change(usb3, usb3_ep->num))
1438 usb3_disable_dma_pipen(usb3);
1439 usb3_dma_stop_prd(usb3_ep);
1440 status = usb3_dma_update_status(usb3_ep, usb3_req);
1441 usb3_dma_put_setting_area(usb3_ep, usb3_req);
1444 spin_unlock_irqrestore(&usb3->lock, flags);
1448 static int renesas_usb3_dma_free_prd(struct renesas_usb3 *usb3,
1452 struct renesas_usb3_dma *dma;
1454 usb3_for_each_dma(usb3, dma, i) {
1456 dma_free_coherent(dev, USB3_DMA_PRD_SIZE,
1457 dma->prd, dma->prd_dma);
1465 static int renesas_usb3_dma_alloc_prd(struct renesas_usb3 *usb3,
1469 struct renesas_usb3_dma *dma;
1474 usb3_for_each_dma(usb3, dma, i) {
1475 dma->prd = dma_alloc_coherent(dev, USB3_DMA_PRD_SIZE,
1476 &dma->prd_dma, GFP_KERNEL);
1478 renesas_usb3_dma_free_prd(usb3, dev);
1487 static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep,
1488 struct renesas_usb3_request *usb3_req)
1490 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1491 struct renesas_usb3_request *usb3_req_first;
1492 unsigned long flags;
1494 u32 enable_bits = 0;
1496 spin_lock_irqsave(&usb3->lock, flags);
1497 if (usb3_ep->halt || usb3_ep->started)
1499 usb3_req_first = __usb3_get_request(usb3_ep);
1500 if (!usb3_req_first || usb3_req != usb3_req_first)
1503 if (usb3_pn_change(usb3, usb3_ep->num) < 0)
1506 usb3_ep->started = true;
1508 if (usb3_dma_try_start(usb3_ep, usb3_req))
1511 usb3_pn_start(usb3);
1513 if (usb3_ep->dir_in) {
1514 ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE);
1515 enable_bits |= PN_INT_LSTTR;
1519 enable_bits |= PN_INT_BFRDY;
1522 usb3_set_bit(usb3, enable_bits, USB3_PN_INT_ENA);
1523 usb3_enable_pipe_irq(usb3, usb3_ep->num);
1526 spin_unlock_irqrestore(&usb3->lock, flags);
1529 static int renesas_usb3_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
1532 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
1533 struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req);
1534 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1535 unsigned long flags;
1537 dev_dbg(usb3_to_dev(usb3), "ep_queue: ep%2d, %u\n", usb3_ep->num,
1540 _req->status = -EINPROGRESS;
1542 spin_lock_irqsave(&usb3->lock, flags);
1543 list_add_tail(&usb3_req->queue, &usb3_ep->queue);
1544 spin_unlock_irqrestore(&usb3->lock, flags);
1547 usb3_start_pipe0(usb3_ep, usb3_req);
1549 usb3_start_pipen(usb3_ep, usb3_req);
1554 static void usb3_set_device_address(struct renesas_usb3 *usb3, u16 addr)
1556 /* DEV_ADDR bit field is cleared by WarmReset, HotReset and BusReset */
1557 usb3_set_bit(usb3, USB_COM_CON_DEV_ADDR(addr), USB3_USB_COM_CON);
1560 static bool usb3_std_req_set_address(struct renesas_usb3 *usb3,
1561 struct usb_ctrlrequest *ctrl)
1563 if (le16_to_cpu(ctrl->wValue) >= 128)
1564 return true; /* stall */
1566 usb3_set_device_address(usb3, le16_to_cpu(ctrl->wValue));
1567 usb3_set_p0_con_for_no_data(usb3);
1572 static void usb3_pipe0_internal_xfer(struct renesas_usb3 *usb3,
1573 void *tx_data, size_t len,
1574 void (*complete)(struct usb_ep *ep,
1575 struct usb_request *req))
1577 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
1580 memcpy(usb3->ep0_buf, tx_data,
1581 min_t(size_t, len, USB3_EP0_BUF_SIZE));
1583 usb3->ep0_req->buf = &usb3->ep0_buf;
1584 usb3->ep0_req->length = len;
1585 usb3->ep0_req->complete = complete;
1586 renesas_usb3_ep_queue(&usb3_ep->ep, usb3->ep0_req, GFP_ATOMIC);
1589 static void usb3_pipe0_get_status_completion(struct usb_ep *ep,
1590 struct usb_request *req)
1594 static bool usb3_std_req_get_status(struct renesas_usb3 *usb3,
1595 struct usb_ctrlrequest *ctrl)
1598 struct renesas_usb3_ep *usb3_ep;
1603 switch (ctrl->bRequestType & USB_RECIP_MASK) {
1604 case USB_RECIP_DEVICE:
1605 if (usb3->gadget.is_selfpowered)
1606 status |= 1 << USB_DEVICE_SELF_POWERED;
1607 if (usb3->gadget.speed == USB_SPEED_SUPER)
1608 status |= usb3_feature_get_un_enabled(usb3);
1610 case USB_RECIP_INTERFACE:
1612 case USB_RECIP_ENDPOINT:
1613 num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
1614 usb3_ep = usb3_get_ep(usb3, num);
1616 status |= 1 << USB_ENDPOINT_HALT;
1624 tx_data = cpu_to_le16(status);
1625 dev_dbg(usb3_to_dev(usb3), "get_status: req = %p\n",
1626 usb_req_to_usb3_req(usb3->ep0_req));
1627 usb3_pipe0_internal_xfer(usb3, &tx_data, sizeof(tx_data),
1628 usb3_pipe0_get_status_completion);
1634 static bool usb3_std_req_feature_device(struct renesas_usb3 *usb3,
1635 struct usb_ctrlrequest *ctrl, bool set)
1638 u16 w_value = le16_to_cpu(ctrl->wValue);
1641 case USB_DEVICE_TEST_MODE:
1644 usb3->test_mode = le16_to_cpu(ctrl->wIndex) >> 8;
1647 case USB_DEVICE_U1_ENABLE:
1648 case USB_DEVICE_U2_ENABLE:
1649 if (usb3->gadget.speed != USB_SPEED_SUPER)
1651 if (w_value == USB_DEVICE_U1_ENABLE)
1652 usb3_feature_u1_enable(usb3, set);
1653 if (w_value == USB_DEVICE_U2_ENABLE)
1654 usb3_feature_u2_enable(usb3, set);
1664 static int usb3_set_halt_p0(struct renesas_usb3_ep *usb3_ep, bool halt)
1666 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1668 if (unlikely(usb3_ep->num))
1671 usb3_ep->halt = halt;
1673 usb3_set_p0_con_stall(usb3);
1675 usb3_set_p0_con_stop(usb3);
1680 static int usb3_set_halt_pn(struct renesas_usb3_ep *usb3_ep, bool halt,
1681 bool is_clear_feature)
1683 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
1684 unsigned long flags;
1686 spin_lock_irqsave(&usb3->lock, flags);
1687 if (!usb3_pn_change(usb3, usb3_ep->num)) {
1688 usb3_ep->halt = halt;
1690 usb3_pn_stall(usb3);
1691 } else if (!is_clear_feature || !usb3_ep->wedge) {
1692 usb3_pn_con_clear(usb3);
1693 usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON);
1697 spin_unlock_irqrestore(&usb3->lock, flags);
1702 static int usb3_set_halt(struct renesas_usb3_ep *usb3_ep, bool halt,
1703 bool is_clear_feature)
1707 if (halt && usb3_ep->started)
1711 ret = usb3_set_halt_pn(usb3_ep, halt, is_clear_feature);
1713 ret = usb3_set_halt_p0(usb3_ep, halt);
1718 static bool usb3_std_req_feature_endpoint(struct renesas_usb3 *usb3,
1719 struct usb_ctrlrequest *ctrl,
1722 int num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
1723 struct renesas_usb3_ep *usb3_ep;
1724 struct renesas_usb3_request *usb3_req;
1726 if (le16_to_cpu(ctrl->wValue) != USB_ENDPOINT_HALT)
1727 return true; /* stall */
1729 usb3_ep = usb3_get_ep(usb3, num);
1730 usb3_set_halt(usb3_ep, set, true);
1732 /* Restarts a queue if clear feature */
1734 usb3_ep->started = false;
1735 usb3_req = usb3_get_request(usb3_ep);
1737 usb3_start_pipen(usb3_ep, usb3_req);
1743 static bool usb3_std_req_feature(struct renesas_usb3 *usb3,
1744 struct usb_ctrlrequest *ctrl, bool set)
1748 switch (ctrl->bRequestType & USB_RECIP_MASK) {
1749 case USB_RECIP_DEVICE:
1750 stall = usb3_std_req_feature_device(usb3, ctrl, set);
1752 case USB_RECIP_INTERFACE:
1754 case USB_RECIP_ENDPOINT:
1755 stall = usb3_std_req_feature_endpoint(usb3, ctrl, set);
1763 usb3_set_p0_con_for_no_data(usb3);
1768 static void usb3_pipe0_set_sel_completion(struct usb_ep *ep,
1769 struct usb_request *req)
1774 static bool usb3_std_req_set_sel(struct renesas_usb3 *usb3,
1775 struct usb_ctrlrequest *ctrl)
1777 u16 w_length = le16_to_cpu(ctrl->wLength);
1780 return true; /* stall */
1782 dev_dbg(usb3_to_dev(usb3), "set_sel: req = %p\n",
1783 usb_req_to_usb3_req(usb3->ep0_req));
1784 usb3_pipe0_internal_xfer(usb3, NULL, 6, usb3_pipe0_set_sel_completion);
1789 static bool usb3_std_req_set_configuration(struct renesas_usb3 *usb3,
1790 struct usb_ctrlrequest *ctrl)
1792 if (le16_to_cpu(ctrl->wValue) > 0)
1793 usb3_set_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
1795 usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON);
1801 * usb3_handle_standard_request - handle some standard requests
1802 * @usb3: the renesas_usb3 pointer
1803 * @ctrl: a pointer of setup data
1805 * Returns true if this function handled a standard request
1807 static bool usb3_handle_standard_request(struct renesas_usb3 *usb3,
1808 struct usb_ctrlrequest *ctrl)
1813 if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
1814 switch (ctrl->bRequest) {
1815 case USB_REQ_SET_ADDRESS:
1816 stall = usb3_std_req_set_address(usb3, ctrl);
1819 case USB_REQ_GET_STATUS:
1820 stall = usb3_std_req_get_status(usb3, ctrl);
1823 case USB_REQ_CLEAR_FEATURE:
1824 stall = usb3_std_req_feature(usb3, ctrl, false);
1827 case USB_REQ_SET_FEATURE:
1828 stall = usb3_std_req_feature(usb3, ctrl, true);
1831 case USB_REQ_SET_SEL:
1832 stall = usb3_std_req_set_sel(usb3, ctrl);
1835 case USB_REQ_SET_ISOCH_DELAY:
1836 /* This hardware doesn't support Isochronous xfer */
1840 case USB_REQ_SET_CONFIGURATION:
1841 usb3_std_req_set_configuration(usb3, ctrl);
1849 usb3_set_p0_con_stall(usb3);
1854 static int usb3_p0_con_clear_buffer(struct renesas_usb3 *usb3)
1856 usb3_set_bit(usb3, P0_CON_BCLR, USB3_P0_CON);
1858 return usb3_wait(usb3, USB3_P0_CON, P0_CON_BCLR, 0);
1861 static void usb3_irq_epc_pipe0_setup(struct renesas_usb3 *usb3)
1863 struct usb_ctrlrequest ctrl;
1864 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
1866 /* Call giveback function if previous transfer is not completed */
1867 if (usb3_ep->started)
1868 usb3_request_done(usb3_ep, usb3_get_request(usb3_ep),
1871 usb3_p0_con_clear_buffer(usb3);
1872 usb3_get_setup_data(usb3, &ctrl);
1873 if (!usb3_handle_standard_request(usb3, &ctrl))
1874 if (usb3->driver->setup(&usb3->gadget, &ctrl) < 0)
1875 usb3_set_p0_con_stall(usb3);
1878 static void usb3_irq_epc_pipe0_bfrdy(struct renesas_usb3 *usb3)
1880 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0);
1881 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
1886 usb3_p0_xfer(usb3_ep, usb3_req);
1889 static void usb3_irq_epc_pipe0(struct renesas_usb3 *usb3)
1891 u32 p0_int_sta = usb3_read(usb3, USB3_P0_INT_STA);
1893 p0_int_sta &= usb3_read(usb3, USB3_P0_INT_ENA);
1894 usb3_write(usb3, p0_int_sta, USB3_P0_INT_STA);
1895 if (p0_int_sta & P0_INT_STSED)
1896 usb3_irq_epc_pipe0_status_end(usb3);
1897 if (p0_int_sta & P0_INT_SETUP)
1898 usb3_irq_epc_pipe0_setup(usb3);
1899 if (p0_int_sta & P0_INT_BFRDY)
1900 usb3_irq_epc_pipe0_bfrdy(usb3);
1903 static void usb3_request_done_pipen(struct renesas_usb3 *usb3,
1904 struct renesas_usb3_ep *usb3_ep,
1905 struct renesas_usb3_request *usb3_req,
1908 unsigned long flags;
1910 spin_lock_irqsave(&usb3->lock, flags);
1911 if (usb3_pn_change(usb3, usb3_ep->num))
1913 spin_unlock_irqrestore(&usb3->lock, flags);
1915 usb3_disable_pipe_irq(usb3, usb3_ep->num);
1916 usb3_request_done(usb3_ep, usb3_req, status);
1918 /* get next usb3_req */
1919 usb3_req = usb3_get_request(usb3_ep);
1921 usb3_start_pipen(usb3_ep, usb3_req);
1924 static void usb3_irq_epc_pipen_lsttr(struct renesas_usb3 *usb3, int num)
1926 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num);
1927 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
1932 if (usb3_ep->dir_in) {
1933 dev_dbg(usb3_to_dev(usb3), "%s: len = %u, actual = %u\n",
1934 __func__, usb3_req->req.length, usb3_req->req.actual);
1935 usb3_request_done_pipen(usb3, usb3_ep, usb3_req, 0);
1939 static void usb3_irq_epc_pipen_bfrdy(struct renesas_usb3 *usb3, int num)
1941 struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num);
1942 struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep);
1948 spin_lock(&usb3->lock);
1949 if (usb3_pn_change(usb3, num))
1952 if (usb3_ep->dir_in) {
1953 /* Do not stop the IN pipe here to detect LSTTR interrupt */
1954 if (!usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE))
1955 usb3_clear_bit(usb3, PN_INT_BFRDY, USB3_PN_INT_ENA);
1957 if (!usb3_read_pipe(usb3_ep, usb3_req, USB3_PN_READ))
1962 /* need to unlock because usb3_request_done_pipen() locks it */
1963 spin_unlock(&usb3->lock);
1966 usb3_request_done_pipen(usb3, usb3_ep, usb3_req, 0);
1969 static void usb3_irq_epc_pipen(struct renesas_usb3 *usb3, int num)
1973 spin_lock(&usb3->lock);
1974 if (usb3_pn_change(usb3, num) < 0) {
1975 spin_unlock(&usb3->lock);
1979 pn_int_sta = usb3_read(usb3, USB3_PN_INT_STA);
1980 pn_int_sta &= usb3_read(usb3, USB3_PN_INT_ENA);
1981 usb3_write(usb3, pn_int_sta, USB3_PN_INT_STA);
1982 spin_unlock(&usb3->lock);
1983 if (pn_int_sta & PN_INT_LSTTR)
1984 usb3_irq_epc_pipen_lsttr(usb3, num);
1985 if (pn_int_sta & PN_INT_BFRDY)
1986 usb3_irq_epc_pipen_bfrdy(usb3, num);
1989 static void usb3_irq_epc_int_2(struct renesas_usb3 *usb3, u32 int_sta_2)
1993 for (i = 0; i < usb3->num_usb3_eps; i++) {
1994 if (int_sta_2 & USB_INT_2_PIPE(i)) {
1996 usb3_irq_epc_pipe0(usb3);
1998 usb3_irq_epc_pipen(usb3, i);
2003 static void usb3_irq_idmon_change(struct renesas_usb3 *usb3)
2005 usb3_check_id(usb3);
2008 static void usb3_irq_otg_int(struct renesas_usb3 *usb3, u32 otg_int_sta)
2010 if (otg_int_sta & USB_OTG_IDMON)
2011 usb3_irq_idmon_change(usb3);
2014 static void usb3_irq_epc(struct renesas_usb3 *usb3)
2016 u32 int_sta_1 = usb3_read(usb3, USB3_USB_INT_STA_1);
2017 u32 int_sta_2 = usb3_read(usb3, USB3_USB_INT_STA_2);
2018 u32 otg_int_sta = usb3_read(usb3, USB3_USB_OTG_INT_STA);
2020 int_sta_1 &= usb3_read(usb3, USB3_USB_INT_ENA_1);
2022 usb3_write(usb3, int_sta_1, USB3_USB_INT_STA_1);
2023 usb3_irq_epc_int_1(usb3, int_sta_1);
2026 int_sta_2 &= usb3_read(usb3, USB3_USB_INT_ENA_2);
2028 usb3_irq_epc_int_2(usb3, int_sta_2);
2030 otg_int_sta &= usb3_read(usb3, USB3_USB_OTG_INT_ENA);
2032 usb3_write(usb3, otg_int_sta, USB3_USB_OTG_INT_STA);
2033 usb3_irq_otg_int(usb3, otg_int_sta);
2037 static void usb3_irq_dma_int(struct renesas_usb3 *usb3, u32 dma_sta)
2039 struct renesas_usb3_ep *usb3_ep;
2040 struct renesas_usb3_request *usb3_req;
2043 for (i = 0; i < usb3->num_usb3_eps; i++) {
2044 if (!(dma_sta & DMA_INT(i)))
2047 usb3_ep = usb3_get_ep(usb3, i);
2048 if (!(usb3_read(usb3, USB3_AXI_INT_STA) &
2049 AXI_INT_PRDEN_CLR_STA(usb3_ep->dma->num)))
2052 usb3_req = usb3_get_request(usb3_ep);
2053 status = usb3_dma_try_stop(usb3_ep, usb3_req);
2054 usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status);
2058 static void usb3_irq_dma(struct renesas_usb3 *usb3)
2060 u32 dma_sta = usb3_read(usb3, USB3_DMA_INT_STA);
2062 dma_sta &= usb3_read(usb3, USB3_DMA_INT_ENA);
2064 usb3_write(usb3, dma_sta, USB3_DMA_INT_STA);
2065 usb3_irq_dma_int(usb3, dma_sta);
2069 static irqreturn_t renesas_usb3_irq(int irq, void *_usb3)
2071 struct renesas_usb3 *usb3 = _usb3;
2072 irqreturn_t ret = IRQ_NONE;
2073 u32 axi_int_sta = usb3_read(usb3, USB3_AXI_INT_STA);
2075 if (axi_int_sta & AXI_INT_DMAINT) {
2080 if (axi_int_sta & AXI_INT_EPCINT) {
2088 static void usb3_write_pn_mod(struct renesas_usb3_ep *usb3_ep,
2089 const struct usb_endpoint_descriptor *desc)
2091 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
2094 val |= usb3_ep->dir_in ? PN_MOD_DIR : 0;
2095 val |= PN_MOD_TYPE(usb_endpoint_type(desc));
2096 val |= PN_MOD_EPNUM(usb_endpoint_num(desc));
2097 usb3_write(usb3, val, USB3_PN_MOD);
2100 static u32 usb3_calc_ramarea(int ram_size)
2102 WARN_ON(ram_size > SZ_16K);
2104 if (ram_size <= SZ_1K)
2105 return PN_RAMMAP_RAMAREA_1KB;
2106 else if (ram_size <= SZ_2K)
2107 return PN_RAMMAP_RAMAREA_2KB;
2108 else if (ram_size <= SZ_4K)
2109 return PN_RAMMAP_RAMAREA_4KB;
2110 else if (ram_size <= SZ_8K)
2111 return PN_RAMMAP_RAMAREA_8KB;
2113 return PN_RAMMAP_RAMAREA_16KB;
2116 static u32 usb3_calc_rammap_val(struct renesas_usb3_ep *usb3_ep,
2117 const struct usb_endpoint_descriptor *desc)
2120 static const u32 max_packet_array[] = {8, 16, 32, 64, 512};
2121 u32 mpkt = PN_RAMMAP_MPKT(1024);
2123 for (i = 0; i < ARRAY_SIZE(max_packet_array); i++) {
2124 if (usb_endpoint_maxp(desc) <= max_packet_array[i])
2125 mpkt = PN_RAMMAP_MPKT(max_packet_array[i]);
2128 return usb3_ep->rammap_val | mpkt;
2131 static int usb3_enable_pipe_n(struct renesas_usb3_ep *usb3_ep,
2132 const struct usb_endpoint_descriptor *desc)
2134 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
2135 unsigned long flags;
2137 usb3_ep->dir_in = usb_endpoint_dir_in(desc);
2139 spin_lock_irqsave(&usb3->lock, flags);
2140 if (!usb3_pn_change(usb3, usb3_ep->num)) {
2141 usb3_write_pn_mod(usb3_ep, desc);
2142 usb3_write(usb3, usb3_calc_rammap_val(usb3_ep, desc),
2144 usb3_pn_con_clear(usb3);
2145 usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON);
2147 spin_unlock_irqrestore(&usb3->lock, flags);
2152 static int usb3_disable_pipe_n(struct renesas_usb3_ep *usb3_ep)
2154 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
2155 unsigned long flags;
2157 usb3_ep->halt = false;
2159 spin_lock_irqsave(&usb3->lock, flags);
2160 if (!usb3_pn_change(usb3, usb3_ep->num)) {
2161 usb3_write(usb3, 0, USB3_PN_INT_ENA);
2162 usb3_write(usb3, 0, USB3_PN_RAMMAP);
2163 usb3_clear_bit(usb3, PN_CON_EN, USB3_PN_CON);
2165 spin_unlock_irqrestore(&usb3->lock, flags);
2170 /*------- usb_ep_ops -----------------------------------------------------*/
2171 static int renesas_usb3_ep_enable(struct usb_ep *_ep,
2172 const struct usb_endpoint_descriptor *desc)
2174 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
2176 return usb3_enable_pipe_n(usb3_ep, desc);
2179 static int renesas_usb3_ep_disable(struct usb_ep *_ep)
2181 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
2182 struct renesas_usb3_request *usb3_req;
2185 usb3_req = usb3_get_request(usb3_ep);
2188 usb3_dma_try_stop(usb3_ep, usb3_req);
2189 usb3_request_done(usb3_ep, usb3_req, -ESHUTDOWN);
2192 return usb3_disable_pipe_n(usb3_ep);
2195 static struct usb_request *__renesas_usb3_ep_alloc_request(gfp_t gfp_flags)
2197 struct renesas_usb3_request *usb3_req;
2199 usb3_req = kzalloc(sizeof(struct renesas_usb3_request), gfp_flags);
2203 INIT_LIST_HEAD(&usb3_req->queue);
2205 return &usb3_req->req;
2208 static void __renesas_usb3_ep_free_request(struct usb_request *_req)
2210 struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req);
2215 static struct usb_request *renesas_usb3_ep_alloc_request(struct usb_ep *_ep,
2218 return __renesas_usb3_ep_alloc_request(gfp_flags);
2221 static void renesas_usb3_ep_free_request(struct usb_ep *_ep,
2222 struct usb_request *_req)
2224 __renesas_usb3_ep_free_request(_req);
2227 static int renesas_usb3_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
2229 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
2230 struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req);
2231 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
2233 dev_dbg(usb3_to_dev(usb3), "ep_dequeue: ep%2d, %u\n", usb3_ep->num,
2236 usb3_dma_try_stop(usb3_ep, usb3_req);
2237 usb3_request_done_pipen(usb3, usb3_ep, usb3_req, -ECONNRESET);
2242 static int renesas_usb3_ep_set_halt(struct usb_ep *_ep, int value)
2244 return usb3_set_halt(usb_ep_to_usb3_ep(_ep), !!value, false);
2247 static int renesas_usb3_ep_set_wedge(struct usb_ep *_ep)
2249 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
2251 usb3_ep->wedge = true;
2252 return usb3_set_halt(usb3_ep, true, false);
2255 static void renesas_usb3_ep_fifo_flush(struct usb_ep *_ep)
2257 struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep);
2258 struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep);
2259 unsigned long flags;
2262 spin_lock_irqsave(&usb3->lock, flags);
2263 if (!usb3_pn_change(usb3, usb3_ep->num)) {
2264 usb3_pn_con_clear(usb3);
2265 usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON);
2267 spin_unlock_irqrestore(&usb3->lock, flags);
2269 usb3_p0_con_clear_buffer(usb3);
2273 static const struct usb_ep_ops renesas_usb3_ep_ops = {
2274 .enable = renesas_usb3_ep_enable,
2275 .disable = renesas_usb3_ep_disable,
2277 .alloc_request = renesas_usb3_ep_alloc_request,
2278 .free_request = renesas_usb3_ep_free_request,
2280 .queue = renesas_usb3_ep_queue,
2281 .dequeue = renesas_usb3_ep_dequeue,
2283 .set_halt = renesas_usb3_ep_set_halt,
2284 .set_wedge = renesas_usb3_ep_set_wedge,
2285 .fifo_flush = renesas_usb3_ep_fifo_flush,
2288 /*------- usb_gadget_ops -------------------------------------------------*/
2289 static int renesas_usb3_start(struct usb_gadget *gadget,
2290 struct usb_gadget_driver *driver)
2292 struct renesas_usb3 *usb3;
2294 if (!driver || driver->max_speed < USB_SPEED_FULL ||
2298 usb3 = gadget_to_renesas_usb3(gadget);
2300 /* hook up the driver */
2301 usb3->driver = driver;
2304 phy_init(usb3->phy);
2306 pm_runtime_get_sync(usb3_to_dev(usb3));
2308 renesas_usb3_init_controller(usb3);
2313 static int renesas_usb3_stop(struct usb_gadget *gadget)
2315 struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget);
2317 usb3->softconnect = false;
2318 usb3->gadget.speed = USB_SPEED_UNKNOWN;
2319 usb3->driver = NULL;
2320 renesas_usb3_stop_controller(usb3);
2323 phy_exit(usb3->phy);
2325 pm_runtime_put(usb3_to_dev(usb3));
2330 static int renesas_usb3_get_frame(struct usb_gadget *_gadget)
2335 static int renesas_usb3_pullup(struct usb_gadget *gadget, int is_on)
2337 struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget);
2339 usb3->softconnect = !!is_on;
2344 static int renesas_usb3_set_selfpowered(struct usb_gadget *gadget, int is_self)
2346 gadget->is_selfpowered = !!is_self;
2351 static const struct usb_gadget_ops renesas_usb3_gadget_ops = {
2352 .get_frame = renesas_usb3_get_frame,
2353 .udc_start = renesas_usb3_start,
2354 .udc_stop = renesas_usb3_stop,
2355 .pullup = renesas_usb3_pullup,
2356 .set_selfpowered = renesas_usb3_set_selfpowered,
2359 static enum usb_role renesas_usb3_role_switch_get(struct usb_role_switch *sw)
2361 struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw);
2362 enum usb_role cur_role;
2364 pm_runtime_get_sync(usb3_to_dev(usb3));
2365 cur_role = usb3_is_host(usb3) ? USB_ROLE_HOST : USB_ROLE_DEVICE;
2366 pm_runtime_put(usb3_to_dev(usb3));
2371 static void handle_ext_role_switch_states(struct device *dev,
2374 struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2375 struct device *host = usb3->host_dev;
2376 enum usb_role cur_role = renesas_usb3_role_switch_get(usb3->role_sw);
2380 usb3->connection_state = USB_ROLE_NONE;
2381 if (cur_role == USB_ROLE_HOST)
2382 device_release_driver(host);
2384 usb3_disconnect(usb3);
2385 usb3_vbus_out(usb3, false);
2387 case USB_ROLE_DEVICE:
2388 if (usb3->connection_state == USB_ROLE_NONE) {
2389 usb3->connection_state = USB_ROLE_DEVICE;
2390 usb3_set_mode(usb3, false);
2393 } else if (cur_role == USB_ROLE_HOST) {
2394 device_release_driver(host);
2395 usb3_set_mode(usb3, false);
2399 usb3_vbus_out(usb3, false);
2402 if (usb3->connection_state == USB_ROLE_NONE) {
2404 usb3_disconnect(usb3);
2406 usb3->connection_state = USB_ROLE_HOST;
2407 usb3_set_mode(usb3, true);
2408 usb3_vbus_out(usb3, true);
2409 if (device_attach(host) < 0)
2410 dev_err(dev, "device_attach(host) failed\n");
2411 } else if (cur_role == USB_ROLE_DEVICE) {
2412 usb3_disconnect(usb3);
2413 /* Must set the mode before device_attach of the host */
2414 usb3_set_mode(usb3, true);
2415 /* This device_attach() might sleep */
2416 if (device_attach(host) < 0)
2417 dev_err(dev, "device_attach(host) failed\n");
2425 static void handle_role_switch_states(struct device *dev,
2428 struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2429 struct device *host = usb3->host_dev;
2430 enum usb_role cur_role = renesas_usb3_role_switch_get(usb3->role_sw);
2432 if (cur_role == USB_ROLE_HOST && role == USB_ROLE_DEVICE) {
2433 device_release_driver(host);
2434 usb3_set_mode(usb3, false);
2435 } else if (cur_role == USB_ROLE_DEVICE && role == USB_ROLE_HOST) {
2436 /* Must set the mode before device_attach of the host */
2437 usb3_set_mode(usb3, true);
2438 /* This device_attach() might sleep */
2439 if (device_attach(host) < 0)
2440 dev_err(dev, "device_attach(host) failed\n");
2444 static int renesas_usb3_role_switch_set(struct usb_role_switch *sw,
2447 struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw);
2449 pm_runtime_get_sync(usb3_to_dev(usb3));
2451 if (usb3->role_sw_by_connector)
2452 handle_ext_role_switch_states(usb3_to_dev(usb3), role);
2454 handle_role_switch_states(usb3_to_dev(usb3), role);
2456 pm_runtime_put(usb3_to_dev(usb3));
2461 static ssize_t role_store(struct device *dev, struct device_attribute *attr,
2462 const char *buf, size_t count)
2464 struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2465 bool new_mode_is_host;
2470 if (usb3->forced_b_device)
2473 if (sysfs_streq(buf, "host"))
2474 new_mode_is_host = true;
2475 else if (sysfs_streq(buf, "peripheral"))
2476 new_mode_is_host = false;
2480 if (new_mode_is_host == usb3_is_host(usb3))
2483 usb3_mode_config(usb3, new_mode_is_host, usb3_is_a_device(usb3));
2488 static ssize_t role_show(struct device *dev, struct device_attribute *attr,
2491 struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2496 return sprintf(buf, "%s\n", usb3_is_host(usb3) ? "host" : "peripheral");
2498 static DEVICE_ATTR_RW(role);
2500 static int renesas_usb3_b_device_show(struct seq_file *s, void *unused)
2502 struct renesas_usb3 *usb3 = s->private;
2504 seq_printf(s, "%d\n", usb3->forced_b_device);
2509 static int renesas_usb3_b_device_open(struct inode *inode, struct file *file)
2511 return single_open(file, renesas_usb3_b_device_show, inode->i_private);
2514 static ssize_t renesas_usb3_b_device_write(struct file *file,
2515 const char __user *ubuf,
2516 size_t count, loff_t *ppos)
2518 struct seq_file *s = file->private_data;
2519 struct renesas_usb3 *usb3 = s->private;
2525 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
2528 usb3->start_to_connect = false;
2529 if (usb3->workaround_for_vbus && usb3->forced_b_device &&
2530 !strncmp(buf, "2", 1))
2531 usb3->start_to_connect = true;
2532 else if (!strncmp(buf, "1", 1))
2533 usb3->forced_b_device = true;
2535 usb3->forced_b_device = false;
2537 if (usb3->workaround_for_vbus)
2538 usb3_disconnect(usb3);
2540 /* Let this driver call usb3_connect() if needed */
2541 usb3_check_id(usb3);
2546 static const struct file_operations renesas_usb3_b_device_fops = {
2547 .open = renesas_usb3_b_device_open,
2548 .write = renesas_usb3_b_device_write,
2550 .llseek = seq_lseek,
2551 .release = single_release,
2554 static void renesas_usb3_debugfs_init(struct renesas_usb3 *usb3,
2557 usb3->dentry = debugfs_create_dir(dev_name(dev), usb_debug_root);
2559 debugfs_create_file("b_device", 0644, usb3->dentry, usb3,
2560 &renesas_usb3_b_device_fops);
2563 /*------- platform_driver ------------------------------------------------*/
2564 static int renesas_usb3_remove(struct platform_device *pdev)
2566 struct renesas_usb3 *usb3 = platform_get_drvdata(pdev);
2568 debugfs_remove_recursive(usb3->dentry);
2569 device_remove_file(&pdev->dev, &dev_attr_role);
2571 cancel_work_sync(&usb3->role_work);
2572 usb_role_switch_unregister(usb3->role_sw);
2574 usb_del_gadget_udc(&usb3->gadget);
2575 renesas_usb3_dma_free_prd(usb3, &pdev->dev);
2577 __renesas_usb3_ep_free_request(usb3->ep0_req);
2578 pm_runtime_disable(&pdev->dev);
2583 static int renesas_usb3_init_ep(struct renesas_usb3 *usb3, struct device *dev,
2584 const struct renesas_usb3_priv *priv)
2586 struct renesas_usb3_ep *usb3_ep;
2589 /* calculate num_usb3_eps from renesas_usb3_priv */
2590 usb3->num_usb3_eps = priv->ramsize_per_ramif * priv->num_ramif * 2 /
2591 priv->ramsize_per_pipe + 1;
2593 if (usb3->num_usb3_eps > USB3_MAX_NUM_PIPES)
2594 usb3->num_usb3_eps = USB3_MAX_NUM_PIPES;
2596 usb3->usb3_ep = devm_kcalloc(dev,
2597 usb3->num_usb3_eps, sizeof(*usb3_ep),
2602 dev_dbg(dev, "%s: num_usb3_eps = %d\n", __func__, usb3->num_usb3_eps);
2604 * This driver prepares pipes as follows:
2605 * - odd pipes = IN pipe
2606 * - even pipes = OUT pipe (except pipe 0)
2608 usb3_for_each_ep(usb3_ep, usb3, i) {
2609 snprintf(usb3_ep->ep_name, sizeof(usb3_ep->ep_name), "ep%d", i);
2610 usb3_ep->usb3 = usb3;
2612 usb3_ep->ep.name = usb3_ep->ep_name;
2613 usb3_ep->ep.ops = &renesas_usb3_ep_ops;
2614 INIT_LIST_HEAD(&usb3_ep->queue);
2615 INIT_LIST_HEAD(&usb3_ep->ep.ep_list);
2617 /* for control pipe */
2618 usb3->gadget.ep0 = &usb3_ep->ep;
2619 usb_ep_set_maxpacket_limit(&usb3_ep->ep,
2620 USB3_EP0_SS_MAX_PACKET_SIZE);
2621 usb3_ep->ep.caps.type_control = true;
2622 usb3_ep->ep.caps.dir_in = true;
2623 usb3_ep->ep.caps.dir_out = true;
2627 /* for bulk or interrupt pipe */
2628 usb_ep_set_maxpacket_limit(&usb3_ep->ep, ~0);
2629 list_add_tail(&usb3_ep->ep.ep_list, &usb3->gadget.ep_list);
2630 usb3_ep->ep.caps.type_bulk = true;
2631 usb3_ep->ep.caps.type_int = true;
2633 usb3_ep->ep.caps.dir_in = true;
2635 usb3_ep->ep.caps.dir_out = true;
2641 static void renesas_usb3_init_ram(struct renesas_usb3 *usb3, struct device *dev,
2642 const struct renesas_usb3_priv *priv)
2644 struct renesas_usb3_ep *usb3_ep;
2646 u32 ramif[2], basead[2]; /* index 0 = for IN pipes */
2647 u32 *cur_ramif, *cur_basead;
2650 memset(ramif, 0, sizeof(ramif));
2651 memset(basead, 0, sizeof(basead));
2654 * This driver prepares pipes as follows:
2655 * - all pipes = the same size as "ramsize_per_pipe"
2656 * Please refer to the "Method of Specifying RAM Mapping"
2658 usb3_for_each_ep(usb3_ep, usb3, i) {
2660 continue; /* out of scope if ep num = 0 */
2661 if (usb3_ep->ep.caps.dir_in) {
2662 cur_ramif = &ramif[0];
2663 cur_basead = &basead[0];
2665 cur_ramif = &ramif[1];
2666 cur_basead = &basead[1];
2669 if (*cur_basead > priv->ramsize_per_ramif)
2670 continue; /* out of memory for IN or OUT pipe */
2672 /* calculate rammap_val */
2673 val = PN_RAMMAP_RAMIF(*cur_ramif);
2674 val |= usb3_calc_ramarea(priv->ramsize_per_pipe);
2675 val |= PN_RAMMAP_BASEAD(*cur_basead);
2676 usb3_ep->rammap_val = val;
2678 dev_dbg(dev, "ep%2d: val = %08x, ramif = %d, base = %x\n",
2679 i, val, *cur_ramif, *cur_basead);
2681 /* update current ramif */
2682 if (*cur_ramif + 1 == priv->num_ramif) {
2684 *cur_basead += priv->ramsize_per_pipe;
2691 static const struct renesas_usb3_priv renesas_usb3_priv_r8a7795_es1 = {
2692 .ramsize_per_ramif = SZ_16K,
2694 .ramsize_per_pipe = SZ_4K,
2695 .workaround_for_vbus = true,
2698 static const struct renesas_usb3_priv renesas_usb3_priv_gen3 = {
2699 .ramsize_per_ramif = SZ_16K,
2701 .ramsize_per_pipe = SZ_4K,
2704 static const struct renesas_usb3_priv renesas_usb3_priv_r8a77990 = {
2705 .ramsize_per_ramif = SZ_16K,
2707 .ramsize_per_pipe = SZ_4K,
2708 .workaround_for_vbus = true,
2711 static const struct of_device_id usb3_of_match[] = {
2713 .compatible = "renesas,r8a774c0-usb3-peri",
2714 .data = &renesas_usb3_priv_r8a77990,
2716 .compatible = "renesas,r8a7795-usb3-peri",
2717 .data = &renesas_usb3_priv_gen3,
2719 .compatible = "renesas,r8a77990-usb3-peri",
2720 .data = &renesas_usb3_priv_r8a77990,
2722 .compatible = "renesas,rcar-gen3-usb3-peri",
2723 .data = &renesas_usb3_priv_gen3,
2727 MODULE_DEVICE_TABLE(of, usb3_of_match);
2729 static const struct soc_device_attribute renesas_usb3_quirks_match[] = {
2731 .soc_id = "r8a7795", .revision = "ES1.*",
2732 .data = &renesas_usb3_priv_r8a7795_es1,
2737 static const unsigned int renesas_usb3_cable[] = {
2743 static struct usb_role_switch_desc renesas_usb3_role_switch_desc = {
2744 .set = renesas_usb3_role_switch_set,
2745 .get = renesas_usb3_role_switch_get,
2746 .allow_userspace_control = true,
2749 static int renesas_usb3_probe(struct platform_device *pdev)
2751 struct renesas_usb3 *usb3;
2753 const struct renesas_usb3_priv *priv;
2754 const struct soc_device_attribute *attr;
2756 attr = soc_device_match(renesas_usb3_quirks_match);
2760 priv = of_device_get_match_data(&pdev->dev);
2762 irq = platform_get_irq(pdev, 0);
2766 usb3 = devm_kzalloc(&pdev->dev, sizeof(*usb3), GFP_KERNEL);
2770 usb3->reg = devm_platform_ioremap_resource(pdev, 0);
2771 if (IS_ERR(usb3->reg))
2772 return PTR_ERR(usb3->reg);
2774 platform_set_drvdata(pdev, usb3);
2775 spin_lock_init(&usb3->lock);
2777 usb3->gadget.ops = &renesas_usb3_gadget_ops;
2778 usb3->gadget.name = udc_name;
2779 usb3->gadget.max_speed = USB_SPEED_SUPER;
2780 INIT_LIST_HEAD(&usb3->gadget.ep_list);
2781 ret = renesas_usb3_init_ep(usb3, &pdev->dev, priv);
2784 renesas_usb3_init_ram(usb3, &pdev->dev, priv);
2786 ret = devm_request_irq(&pdev->dev, irq, renesas_usb3_irq, 0,
2787 dev_name(&pdev->dev), usb3);
2791 INIT_WORK(&usb3->extcon_work, renesas_usb3_extcon_work);
2792 usb3->extcon = devm_extcon_dev_allocate(&pdev->dev, renesas_usb3_cable);
2793 if (IS_ERR(usb3->extcon))
2794 return PTR_ERR(usb3->extcon);
2796 ret = devm_extcon_dev_register(&pdev->dev, usb3->extcon);
2798 dev_err(&pdev->dev, "Failed to register extcon\n");
2802 /* for ep0 handling */
2803 usb3->ep0_req = __renesas_usb3_ep_alloc_request(GFP_KERNEL);
2807 ret = renesas_usb3_dma_alloc_prd(usb3, &pdev->dev);
2812 * This is optional. So, if this driver cannot get a phy,
2813 * this driver will not handle a phy anymore.
2815 usb3->phy = devm_phy_optional_get(&pdev->dev, "usb");
2816 if (IS_ERR(usb3->phy)) {
2817 ret = PTR_ERR(usb3->phy);
2821 pm_runtime_enable(&pdev->dev);
2822 ret = usb_add_gadget_udc(&pdev->dev, &usb3->gadget);
2826 ret = device_create_file(&pdev->dev, &dev_attr_role);
2828 goto err_dev_create;
2830 if (device_property_read_bool(&pdev->dev, "usb-role-switch")) {
2831 usb3->role_sw_by_connector = true;
2832 renesas_usb3_role_switch_desc.fwnode = dev_fwnode(&pdev->dev);
2835 renesas_usb3_role_switch_desc.driver_data = usb3;
2837 INIT_WORK(&usb3->role_work, renesas_usb3_role_work);
2838 usb3->role_sw = usb_role_switch_register(&pdev->dev,
2839 &renesas_usb3_role_switch_desc);
2840 if (!IS_ERR(usb3->role_sw)) {
2841 usb3->host_dev = usb_of_get_companion_dev(&pdev->dev);
2842 if (!usb3->host_dev) {
2843 /* If not found, this driver will not use a role sw */
2844 usb_role_switch_unregister(usb3->role_sw);
2845 usb3->role_sw = NULL;
2848 usb3->role_sw = NULL;
2851 usb3->workaround_for_vbus = priv->workaround_for_vbus;
2853 renesas_usb3_debugfs_init(usb3, &pdev->dev);
2855 dev_info(&pdev->dev, "probed%s\n", usb3->phy ? " with phy" : "");
2860 usb_del_gadget_udc(&usb3->gadget);
2863 renesas_usb3_dma_free_prd(usb3, &pdev->dev);
2866 __renesas_usb3_ep_free_request(usb3->ep0_req);
2871 #ifdef CONFIG_PM_SLEEP
2872 static int renesas_usb3_suspend(struct device *dev)
2874 struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2880 renesas_usb3_stop_controller(usb3);
2882 phy_exit(usb3->phy);
2883 pm_runtime_put(dev);
2888 static int renesas_usb3_resume(struct device *dev)
2890 struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
2897 phy_init(usb3->phy);
2898 pm_runtime_get_sync(dev);
2899 renesas_usb3_init_controller(usb3);
2905 static SIMPLE_DEV_PM_OPS(renesas_usb3_pm_ops, renesas_usb3_suspend,
2906 renesas_usb3_resume);
2908 static struct platform_driver renesas_usb3_driver = {
2909 .probe = renesas_usb3_probe,
2910 .remove = renesas_usb3_remove,
2913 .pm = &renesas_usb3_pm_ops,
2914 .of_match_table = of_match_ptr(usb3_of_match),
2917 module_platform_driver(renesas_usb3_driver);
2919 MODULE_DESCRIPTION("Renesas USB3.0 Peripheral driver");
2920 MODULE_LICENSE("GPL v2");
2921 MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>");
2922 MODULE_ALIAS("platform:renesas_usb3");