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56f5b1cf PZ |
1 | /* |
2 | * core.c - DesignWare HS OTG Controller common routines | |
3 | * | |
4 | * Copyright (C) 2004-2013 Synopsys, Inc. | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions | |
8 | * are met: | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions, and the following disclaimer, | |
11 | * without modification. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. The names of the above-listed copyright holders may not be used | |
16 | * to endorse or promote products derived from this software without | |
17 | * specific prior written permission. | |
18 | * | |
19 | * ALTERNATIVELY, this software may be distributed under the terms of the | |
20 | * GNU General Public License ("GPL") as published by the Free Software | |
21 | * Foundation; either version 2 of the License, or (at your option) any | |
22 | * later version. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
25 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
26 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
27 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
28 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
29 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
30 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
31 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
32 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
33 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
34 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | /* | |
38 | * The Core code provides basic services for accessing and managing the | |
39 | * DWC_otg hardware. These services are used by both the Host Controller | |
40 | * Driver and the Peripheral Controller Driver. | |
41 | */ | |
42 | #include <linux/kernel.h> | |
43 | #include <linux/module.h> | |
44 | #include <linux/moduleparam.h> | |
45 | #include <linux/spinlock.h> | |
46 | #include <linux/interrupt.h> | |
47 | #include <linux/dma-mapping.h> | |
48 | #include <linux/delay.h> | |
49 | #include <linux/io.h> | |
50 | #include <linux/slab.h> | |
51 | #include <linux/usb.h> | |
52 | ||
53 | #include <linux/usb/hcd.h> | |
54 | #include <linux/usb/ch11.h> | |
55 | ||
56 | #include "core.h" | |
57 | #include "hcd.h" | |
58 | ||
d17ee77b GH |
59 | /** |
60 | * dwc2_backup_global_registers() - Backup global controller registers. | |
61 | * When suspending usb bus, registers needs to be backuped | |
62 | * if controller power is disabled once suspended. | |
63 | * | |
64 | * @hsotg: Programming view of the DWC_otg controller | |
65 | */ | |
66 | static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg) | |
67 | { | |
68 | struct dwc2_gregs_backup *gr; | |
69 | int i; | |
70 | ||
71 | /* Backup global regs */ | |
cc1e204c | 72 | gr = &hsotg->gr_backup; |
d17ee77b | 73 | |
95c8bc36 AS |
74 | gr->gotgctl = dwc2_readl(hsotg->regs + GOTGCTL); |
75 | gr->gintmsk = dwc2_readl(hsotg->regs + GINTMSK); | |
76 | gr->gahbcfg = dwc2_readl(hsotg->regs + GAHBCFG); | |
77 | gr->gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); | |
78 | gr->grxfsiz = dwc2_readl(hsotg->regs + GRXFSIZ); | |
79 | gr->gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ); | |
80 | gr->hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ); | |
81 | gr->gdfifocfg = dwc2_readl(hsotg->regs + GDFIFOCFG); | |
d17ee77b | 82 | for (i = 0; i < MAX_EPS_CHANNELS; i++) |
95c8bc36 | 83 | gr->dtxfsiz[i] = dwc2_readl(hsotg->regs + DPTXFSIZN(i)); |
d17ee77b | 84 | |
cc1e204c | 85 | gr->valid = true; |
d17ee77b GH |
86 | return 0; |
87 | } | |
88 | ||
89 | /** | |
90 | * dwc2_restore_global_registers() - Restore controller global registers. | |
91 | * When resuming usb bus, device registers needs to be restored | |
92 | * if controller power were disabled. | |
93 | * | |
94 | * @hsotg: Programming view of the DWC_otg controller | |
95 | */ | |
96 | static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg) | |
97 | { | |
98 | struct dwc2_gregs_backup *gr; | |
99 | int i; | |
100 | ||
101 | dev_dbg(hsotg->dev, "%s\n", __func__); | |
102 | ||
103 | /* Restore global regs */ | |
cc1e204c MYK |
104 | gr = &hsotg->gr_backup; |
105 | if (!gr->valid) { | |
d17ee77b GH |
106 | dev_err(hsotg->dev, "%s: no global registers to restore\n", |
107 | __func__); | |
108 | return -EINVAL; | |
109 | } | |
cc1e204c | 110 | gr->valid = false; |
d17ee77b | 111 | |
95c8bc36 AS |
112 | dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); |
113 | dwc2_writel(gr->gotgctl, hsotg->regs + GOTGCTL); | |
114 | dwc2_writel(gr->gintmsk, hsotg->regs + GINTMSK); | |
115 | dwc2_writel(gr->gusbcfg, hsotg->regs + GUSBCFG); | |
116 | dwc2_writel(gr->gahbcfg, hsotg->regs + GAHBCFG); | |
117 | dwc2_writel(gr->grxfsiz, hsotg->regs + GRXFSIZ); | |
118 | dwc2_writel(gr->gnptxfsiz, hsotg->regs + GNPTXFSIZ); | |
119 | dwc2_writel(gr->hptxfsiz, hsotg->regs + HPTXFSIZ); | |
120 | dwc2_writel(gr->gdfifocfg, hsotg->regs + GDFIFOCFG); | |
d17ee77b | 121 | for (i = 0; i < MAX_EPS_CHANNELS; i++) |
95c8bc36 | 122 | dwc2_writel(gr->dtxfsiz[i], hsotg->regs + DPTXFSIZN(i)); |
d17ee77b GH |
123 | |
124 | return 0; | |
125 | } | |
126 | ||
127 | /** | |
128 | * dwc2_exit_hibernation() - Exit controller from Partial Power Down. | |
129 | * | |
130 | * @hsotg: Programming view of the DWC_otg controller | |
131 | * @restore: Controller registers need to be restored | |
132 | */ | |
133 | int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, bool restore) | |
134 | { | |
135 | u32 pcgcctl; | |
136 | int ret = 0; | |
137 | ||
285046aa GH |
138 | if (!hsotg->core_params->hibernation) |
139 | return -ENOTSUPP; | |
140 | ||
95c8bc36 | 141 | pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); |
d17ee77b | 142 | pcgcctl &= ~PCGCTL_STOPPCLK; |
95c8bc36 | 143 | dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); |
d17ee77b | 144 | |
95c8bc36 | 145 | pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); |
d17ee77b | 146 | pcgcctl &= ~PCGCTL_PWRCLMP; |
95c8bc36 | 147 | dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); |
d17ee77b | 148 | |
95c8bc36 | 149 | pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); |
d17ee77b | 150 | pcgcctl &= ~PCGCTL_RSTPDWNMODULE; |
95c8bc36 | 151 | dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); |
d17ee77b GH |
152 | |
153 | udelay(100); | |
154 | if (restore) { | |
155 | ret = dwc2_restore_global_registers(hsotg); | |
156 | if (ret) { | |
157 | dev_err(hsotg->dev, "%s: failed to restore registers\n", | |
158 | __func__); | |
159 | return ret; | |
160 | } | |
161 | if (dwc2_is_host_mode(hsotg)) { | |
162 | ret = dwc2_restore_host_registers(hsotg); | |
163 | if (ret) { | |
164 | dev_err(hsotg->dev, "%s: failed to restore host registers\n", | |
165 | __func__); | |
166 | return ret; | |
167 | } | |
168 | } else { | |
169 | ret = dwc2_restore_device_registers(hsotg); | |
170 | if (ret) { | |
171 | dev_err(hsotg->dev, "%s: failed to restore device registers\n", | |
172 | __func__); | |
173 | return ret; | |
174 | } | |
175 | } | |
176 | } | |
177 | ||
178 | return ret; | |
179 | } | |
180 | ||
181 | /** | |
182 | * dwc2_enter_hibernation() - Put controller in Partial Power Down. | |
183 | * | |
184 | * @hsotg: Programming view of the DWC_otg controller | |
185 | */ | |
186 | int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg) | |
187 | { | |
188 | u32 pcgcctl; | |
189 | int ret = 0; | |
190 | ||
285046aa GH |
191 | if (!hsotg->core_params->hibernation) |
192 | return -ENOTSUPP; | |
193 | ||
d17ee77b GH |
194 | /* Backup all registers */ |
195 | ret = dwc2_backup_global_registers(hsotg); | |
196 | if (ret) { | |
197 | dev_err(hsotg->dev, "%s: failed to backup global registers\n", | |
198 | __func__); | |
199 | return ret; | |
200 | } | |
201 | ||
202 | if (dwc2_is_host_mode(hsotg)) { | |
203 | ret = dwc2_backup_host_registers(hsotg); | |
204 | if (ret) { | |
205 | dev_err(hsotg->dev, "%s: failed to backup host registers\n", | |
206 | __func__); | |
207 | return ret; | |
208 | } | |
209 | } else { | |
210 | ret = dwc2_backup_device_registers(hsotg); | |
211 | if (ret) { | |
212 | dev_err(hsotg->dev, "%s: failed to backup device registers\n", | |
213 | __func__); | |
214 | return ret; | |
215 | } | |
216 | } | |
217 | ||
cad73da2 GH |
218 | /* |
219 | * Clear any pending interrupts since dwc2 will not be able to | |
220 | * clear them after entering hibernation. | |
221 | */ | |
222 | dwc2_writel(0xffffffff, hsotg->regs + GINTSTS); | |
223 | ||
d17ee77b | 224 | /* Put the controller in low power state */ |
95c8bc36 | 225 | pcgcctl = dwc2_readl(hsotg->regs + PCGCTL); |
d17ee77b GH |
226 | |
227 | pcgcctl |= PCGCTL_PWRCLMP; | |
95c8bc36 | 228 | dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); |
d17ee77b GH |
229 | ndelay(20); |
230 | ||
231 | pcgcctl |= PCGCTL_RSTPDWNMODULE; | |
95c8bc36 | 232 | dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); |
d17ee77b GH |
233 | ndelay(20); |
234 | ||
235 | pcgcctl |= PCGCTL_STOPPCLK; | |
95c8bc36 | 236 | dwc2_writel(pcgcctl, hsotg->regs + PCGCTL); |
d17ee77b GH |
237 | |
238 | return ret; | |
239 | } | |
240 | ||
56f5b1cf PZ |
241 | /* |
242 | * Do core a soft reset of the core. Be careful with this because it | |
243 | * resets all the internal state machines of the core. | |
244 | */ | |
b5d308ab | 245 | int dwc2_core_reset(struct dwc2_hsotg *hsotg) |
56f5b1cf PZ |
246 | { |
247 | u32 greset; | |
248 | int count = 0; | |
249 | ||
250 | dev_vdbg(hsotg->dev, "%s()\n", __func__); | |
251 | ||
b8ccc593 JY |
252 | /* Core Soft Reset */ |
253 | greset = dwc2_readl(hsotg->regs + GRSTCTL); | |
254 | greset |= GRSTCTL_CSFTRST; | |
255 | dwc2_writel(greset, hsotg->regs + GRSTCTL); | |
56f5b1cf | 256 | do { |
20bde643 | 257 | udelay(1); |
95c8bc36 | 258 | greset = dwc2_readl(hsotg->regs + GRSTCTL); |
56f5b1cf PZ |
259 | if (++count > 50) { |
260 | dev_warn(hsotg->dev, | |
b8ccc593 | 261 | "%s() HANG! Soft Reset GRSTCTL=%0x\n", |
56f5b1cf | 262 | __func__, greset); |
beb7e592 | 263 | return -EBUSY; |
56f5b1cf | 264 | } |
b8ccc593 | 265 | } while (greset & GRSTCTL_CSFTRST); |
56f5b1cf | 266 | |
b8ccc593 | 267 | /* Wait for AHB master IDLE state */ |
56f5b1cf | 268 | count = 0; |
56f5b1cf | 269 | do { |
20bde643 | 270 | udelay(1); |
95c8bc36 | 271 | greset = dwc2_readl(hsotg->regs + GRSTCTL); |
56f5b1cf PZ |
272 | if (++count > 50) { |
273 | dev_warn(hsotg->dev, | |
b8ccc593 | 274 | "%s() HANG! AHB Idle GRSTCTL=%0x\n", |
56f5b1cf | 275 | __func__, greset); |
beb7e592 | 276 | return -EBUSY; |
56f5b1cf | 277 | } |
b8ccc593 | 278 | } while (!(greset & GRSTCTL_AHBIDLE)); |
56f5b1cf | 279 | |
b5d308ab JY |
280 | return 0; |
281 | } | |
282 | ||
09c96980 JY |
283 | /* |
284 | * Force the mode of the controller. | |
285 | * | |
286 | * Forcing the mode is needed for two cases: | |
287 | * | |
288 | * 1) If the dr_mode is set to either HOST or PERIPHERAL we force the | |
289 | * controller to stay in a particular mode regardless of ID pin | |
290 | * changes. We do this usually after a core reset. | |
291 | * | |
292 | * 2) During probe we want to read reset values of the hw | |
293 | * configuration registers that are only available in either host or | |
294 | * device mode. We may need to force the mode if the current mode does | |
295 | * not allow us to access the register in the mode that we want. | |
296 | * | |
297 | * In either case it only makes sense to force the mode if the | |
298 | * controller hardware is OTG capable. | |
299 | * | |
300 | * Checks are done in this function to determine whether doing a force | |
301 | * would be valid or not. | |
302 | * | |
303 | * If a force is done, it requires a 25ms delay to take effect. | |
304 | * | |
305 | * Returns true if the mode was forced. | |
306 | */ | |
307 | static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) | |
308 | { | |
309 | u32 gusbcfg; | |
310 | u32 set; | |
311 | u32 clear; | |
312 | ||
313 | dev_dbg(hsotg->dev, "Forcing mode to %s\n", host ? "host" : "device"); | |
314 | ||
315 | /* | |
316 | * Force mode has no effect if the hardware is not OTG. | |
317 | */ | |
318 | if (!dwc2_hw_is_otg(hsotg)) | |
319 | return false; | |
320 | ||
321 | /* | |
322 | * If dr_mode is either peripheral or host only, there is no | |
323 | * need to ever force the mode to the opposite mode. | |
324 | */ | |
325 | if (WARN_ON(host && hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)) | |
326 | return false; | |
327 | ||
328 | if (WARN_ON(!host && hsotg->dr_mode == USB_DR_MODE_HOST)) | |
329 | return false; | |
330 | ||
331 | gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); | |
332 | ||
333 | set = host ? GUSBCFG_FORCEHOSTMODE : GUSBCFG_FORCEDEVMODE; | |
334 | clear = host ? GUSBCFG_FORCEDEVMODE : GUSBCFG_FORCEHOSTMODE; | |
335 | ||
09c96980 JY |
336 | gusbcfg &= ~clear; |
337 | gusbcfg |= set; | |
338 | dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG); | |
339 | ||
340 | msleep(25); | |
341 | return true; | |
342 | } | |
343 | ||
344 | /* | |
345 | * Clears the force mode bits. | |
346 | */ | |
347 | static void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) | |
348 | { | |
349 | u32 gusbcfg; | |
350 | ||
351 | gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); | |
352 | gusbcfg &= ~GUSBCFG_FORCEHOSTMODE; | |
353 | gusbcfg &= ~GUSBCFG_FORCEDEVMODE; | |
354 | dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG); | |
355 | ||
356 | /* | |
357 | * NOTE: This long sleep is _very_ important, otherwise the core will | |
358 | * not stay in host mode after a connector ID change! | |
359 | */ | |
97e46388 | 360 | msleep(25); |
09c96980 JY |
361 | } |
362 | ||
363 | /* | |
364 | * Sets or clears force mode based on the dr_mode parameter. | |
365 | */ | |
366 | void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg) | |
367 | { | |
368 | switch (hsotg->dr_mode) { | |
369 | case USB_DR_MODE_HOST: | |
370 | dwc2_force_mode(hsotg, true); | |
371 | break; | |
372 | case USB_DR_MODE_PERIPHERAL: | |
373 | dwc2_force_mode(hsotg, false); | |
374 | break; | |
375 | case USB_DR_MODE_OTG: | |
376 | dwc2_clear_force_mode(hsotg); | |
377 | break; | |
378 | default: | |
379 | dev_warn(hsotg->dev, "%s() Invalid dr_mode=%d\n", | |
380 | __func__, hsotg->dr_mode); | |
381 | break; | |
382 | } | |
bd84f4ae JY |
383 | |
384 | /* | |
385 | * NOTE: This is required for some rockchip soc based | |
386 | * platforms. | |
387 | */ | |
388 | msleep(50); | |
09c96980 JY |
389 | } |
390 | ||
b5d308ab JY |
391 | /* |
392 | * Do core a soft reset of the core. Be careful with this because it | |
393 | * resets all the internal state machines of the core. | |
394 | * | |
395 | * Additionally this will apply force mode as per the hsotg->dr_mode | |
396 | * parameter. | |
397 | */ | |
398 | int dwc2_core_reset_and_force_dr_mode(struct dwc2_hsotg *hsotg) | |
399 | { | |
400 | int retval; | |
b5d308ab JY |
401 | |
402 | retval = dwc2_core_reset(hsotg); | |
403 | if (retval) | |
404 | return retval; | |
405 | ||
09c96980 | 406 | dwc2_force_dr_mode(hsotg); |
beb7e592 | 407 | return 0; |
56f5b1cf PZ |
408 | } |
409 | ||
56f5b1cf PZ |
410 | /** |
411 | * dwc2_dump_host_registers() - Prints the host registers | |
412 | * | |
413 | * @hsotg: Programming view of DWC_otg controller | |
414 | * | |
415 | * NOTE: This function will be removed once the peripheral controller code | |
416 | * is integrated and the driver is stable | |
417 | */ | |
418 | void dwc2_dump_host_registers(struct dwc2_hsotg *hsotg) | |
419 | { | |
420 | #ifdef DEBUG | |
421 | u32 __iomem *addr; | |
422 | int i; | |
423 | ||
424 | dev_dbg(hsotg->dev, "Host Global Registers\n"); | |
425 | addr = hsotg->regs + HCFG; | |
426 | dev_dbg(hsotg->dev, "HCFG @0x%08lX : 0x%08X\n", | |
95c8bc36 | 427 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
428 | addr = hsotg->regs + HFIR; |
429 | dev_dbg(hsotg->dev, "HFIR @0x%08lX : 0x%08X\n", | |
95c8bc36 | 430 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
431 | addr = hsotg->regs + HFNUM; |
432 | dev_dbg(hsotg->dev, "HFNUM @0x%08lX : 0x%08X\n", | |
95c8bc36 | 433 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
434 | addr = hsotg->regs + HPTXSTS; |
435 | dev_dbg(hsotg->dev, "HPTXSTS @0x%08lX : 0x%08X\n", | |
95c8bc36 | 436 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
437 | addr = hsotg->regs + HAINT; |
438 | dev_dbg(hsotg->dev, "HAINT @0x%08lX : 0x%08X\n", | |
95c8bc36 | 439 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
440 | addr = hsotg->regs + HAINTMSK; |
441 | dev_dbg(hsotg->dev, "HAINTMSK @0x%08lX : 0x%08X\n", | |
95c8bc36 | 442 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
443 | if (hsotg->core_params->dma_desc_enable > 0) { |
444 | addr = hsotg->regs + HFLBADDR; | |
445 | dev_dbg(hsotg->dev, "HFLBADDR @0x%08lX : 0x%08X\n", | |
95c8bc36 | 446 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
447 | } |
448 | ||
449 | addr = hsotg->regs + HPRT0; | |
450 | dev_dbg(hsotg->dev, "HPRT0 @0x%08lX : 0x%08X\n", | |
95c8bc36 | 451 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
452 | |
453 | for (i = 0; i < hsotg->core_params->host_channels; i++) { | |
454 | dev_dbg(hsotg->dev, "Host Channel %d Specific Registers\n", i); | |
455 | addr = hsotg->regs + HCCHAR(i); | |
456 | dev_dbg(hsotg->dev, "HCCHAR @0x%08lX : 0x%08X\n", | |
95c8bc36 | 457 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
458 | addr = hsotg->regs + HCSPLT(i); |
459 | dev_dbg(hsotg->dev, "HCSPLT @0x%08lX : 0x%08X\n", | |
95c8bc36 | 460 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
461 | addr = hsotg->regs + HCINT(i); |
462 | dev_dbg(hsotg->dev, "HCINT @0x%08lX : 0x%08X\n", | |
95c8bc36 | 463 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
464 | addr = hsotg->regs + HCINTMSK(i); |
465 | dev_dbg(hsotg->dev, "HCINTMSK @0x%08lX : 0x%08X\n", | |
95c8bc36 | 466 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
467 | addr = hsotg->regs + HCTSIZ(i); |
468 | dev_dbg(hsotg->dev, "HCTSIZ @0x%08lX : 0x%08X\n", | |
95c8bc36 | 469 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
470 | addr = hsotg->regs + HCDMA(i); |
471 | dev_dbg(hsotg->dev, "HCDMA @0x%08lX : 0x%08X\n", | |
95c8bc36 | 472 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
473 | if (hsotg->core_params->dma_desc_enable > 0) { |
474 | addr = hsotg->regs + HCDMAB(i); | |
475 | dev_dbg(hsotg->dev, "HCDMAB @0x%08lX : 0x%08X\n", | |
95c8bc36 | 476 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
477 | } |
478 | } | |
479 | #endif | |
480 | } | |
481 | ||
482 | /** | |
483 | * dwc2_dump_global_registers() - Prints the core global registers | |
484 | * | |
485 | * @hsotg: Programming view of DWC_otg controller | |
486 | * | |
487 | * NOTE: This function will be removed once the peripheral controller code | |
488 | * is integrated and the driver is stable | |
489 | */ | |
490 | void dwc2_dump_global_registers(struct dwc2_hsotg *hsotg) | |
491 | { | |
492 | #ifdef DEBUG | |
493 | u32 __iomem *addr; | |
56f5b1cf PZ |
494 | |
495 | dev_dbg(hsotg->dev, "Core Global Registers\n"); | |
496 | addr = hsotg->regs + GOTGCTL; | |
497 | dev_dbg(hsotg->dev, "GOTGCTL @0x%08lX : 0x%08X\n", | |
95c8bc36 | 498 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
499 | addr = hsotg->regs + GOTGINT; |
500 | dev_dbg(hsotg->dev, "GOTGINT @0x%08lX : 0x%08X\n", | |
95c8bc36 | 501 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
502 | addr = hsotg->regs + GAHBCFG; |
503 | dev_dbg(hsotg->dev, "GAHBCFG @0x%08lX : 0x%08X\n", | |
95c8bc36 | 504 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
505 | addr = hsotg->regs + GUSBCFG; |
506 | dev_dbg(hsotg->dev, "GUSBCFG @0x%08lX : 0x%08X\n", | |
95c8bc36 | 507 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
508 | addr = hsotg->regs + GRSTCTL; |
509 | dev_dbg(hsotg->dev, "GRSTCTL @0x%08lX : 0x%08X\n", | |
95c8bc36 | 510 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
511 | addr = hsotg->regs + GINTSTS; |
512 | dev_dbg(hsotg->dev, "GINTSTS @0x%08lX : 0x%08X\n", | |
95c8bc36 | 513 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
514 | addr = hsotg->regs + GINTMSK; |
515 | dev_dbg(hsotg->dev, "GINTMSK @0x%08lX : 0x%08X\n", | |
95c8bc36 | 516 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
517 | addr = hsotg->regs + GRXSTSR; |
518 | dev_dbg(hsotg->dev, "GRXSTSR @0x%08lX : 0x%08X\n", | |
95c8bc36 | 519 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
520 | addr = hsotg->regs + GRXFSIZ; |
521 | dev_dbg(hsotg->dev, "GRXFSIZ @0x%08lX : 0x%08X\n", | |
95c8bc36 | 522 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
523 | addr = hsotg->regs + GNPTXFSIZ; |
524 | dev_dbg(hsotg->dev, "GNPTXFSIZ @0x%08lX : 0x%08X\n", | |
95c8bc36 | 525 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
526 | addr = hsotg->regs + GNPTXSTS; |
527 | dev_dbg(hsotg->dev, "GNPTXSTS @0x%08lX : 0x%08X\n", | |
95c8bc36 | 528 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
529 | addr = hsotg->regs + GI2CCTL; |
530 | dev_dbg(hsotg->dev, "GI2CCTL @0x%08lX : 0x%08X\n", | |
95c8bc36 | 531 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
532 | addr = hsotg->regs + GPVNDCTL; |
533 | dev_dbg(hsotg->dev, "GPVNDCTL @0x%08lX : 0x%08X\n", | |
95c8bc36 | 534 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
535 | addr = hsotg->regs + GGPIO; |
536 | dev_dbg(hsotg->dev, "GGPIO @0x%08lX : 0x%08X\n", | |
95c8bc36 | 537 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
538 | addr = hsotg->regs + GUID; |
539 | dev_dbg(hsotg->dev, "GUID @0x%08lX : 0x%08X\n", | |
95c8bc36 | 540 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
541 | addr = hsotg->regs + GSNPSID; |
542 | dev_dbg(hsotg->dev, "GSNPSID @0x%08lX : 0x%08X\n", | |
95c8bc36 | 543 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
544 | addr = hsotg->regs + GHWCFG1; |
545 | dev_dbg(hsotg->dev, "GHWCFG1 @0x%08lX : 0x%08X\n", | |
95c8bc36 | 546 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
547 | addr = hsotg->regs + GHWCFG2; |
548 | dev_dbg(hsotg->dev, "GHWCFG2 @0x%08lX : 0x%08X\n", | |
95c8bc36 | 549 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
550 | addr = hsotg->regs + GHWCFG3; |
551 | dev_dbg(hsotg->dev, "GHWCFG3 @0x%08lX : 0x%08X\n", | |
95c8bc36 | 552 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
553 | addr = hsotg->regs + GHWCFG4; |
554 | dev_dbg(hsotg->dev, "GHWCFG4 @0x%08lX : 0x%08X\n", | |
95c8bc36 | 555 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
556 | addr = hsotg->regs + GLPMCFG; |
557 | dev_dbg(hsotg->dev, "GLPMCFG @0x%08lX : 0x%08X\n", | |
95c8bc36 | 558 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
559 | addr = hsotg->regs + GPWRDN; |
560 | dev_dbg(hsotg->dev, "GPWRDN @0x%08lX : 0x%08X\n", | |
95c8bc36 | 561 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
562 | addr = hsotg->regs + GDFIFOCFG; |
563 | dev_dbg(hsotg->dev, "GDFIFOCFG @0x%08lX : 0x%08X\n", | |
95c8bc36 | 564 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
565 | addr = hsotg->regs + HPTXFSIZ; |
566 | dev_dbg(hsotg->dev, "HPTXFSIZ @0x%08lX : 0x%08X\n", | |
95c8bc36 | 567 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf | 568 | |
56f5b1cf PZ |
569 | addr = hsotg->regs + PCGCTL; |
570 | dev_dbg(hsotg->dev, "PCGCTL @0x%08lX : 0x%08X\n", | |
95c8bc36 | 571 | (unsigned long)addr, dwc2_readl(addr)); |
56f5b1cf PZ |
572 | #endif |
573 | } | |
574 | ||
575 | /** | |
576 | * dwc2_flush_tx_fifo() - Flushes a Tx FIFO | |
577 | * | |
578 | * @hsotg: Programming view of DWC_otg controller | |
579 | * @num: Tx FIFO to flush | |
580 | */ | |
581 | void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num) | |
582 | { | |
583 | u32 greset; | |
584 | int count = 0; | |
585 | ||
586 | dev_vdbg(hsotg->dev, "Flush Tx FIFO %d\n", num); | |
587 | ||
588 | greset = GRSTCTL_TXFFLSH; | |
589 | greset |= num << GRSTCTL_TXFNUM_SHIFT & GRSTCTL_TXFNUM_MASK; | |
95c8bc36 | 590 | dwc2_writel(greset, hsotg->regs + GRSTCTL); |
56f5b1cf PZ |
591 | |
592 | do { | |
95c8bc36 | 593 | greset = dwc2_readl(hsotg->regs + GRSTCTL); |
56f5b1cf PZ |
594 | if (++count > 10000) { |
595 | dev_warn(hsotg->dev, | |
596 | "%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n", | |
597 | __func__, greset, | |
95c8bc36 | 598 | dwc2_readl(hsotg->regs + GNPTXSTS)); |
56f5b1cf PZ |
599 | break; |
600 | } | |
601 | udelay(1); | |
602 | } while (greset & GRSTCTL_TXFFLSH); | |
603 | ||
604 | /* Wait for at least 3 PHY Clocks */ | |
605 | udelay(1); | |
606 | } | |
607 | ||
608 | /** | |
609 | * dwc2_flush_rx_fifo() - Flushes the Rx FIFO | |
610 | * | |
611 | * @hsotg: Programming view of DWC_otg controller | |
612 | */ | |
613 | void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg) | |
614 | { | |
615 | u32 greset; | |
616 | int count = 0; | |
617 | ||
618 | dev_vdbg(hsotg->dev, "%s()\n", __func__); | |
619 | ||
620 | greset = GRSTCTL_RXFFLSH; | |
95c8bc36 | 621 | dwc2_writel(greset, hsotg->regs + GRSTCTL); |
56f5b1cf PZ |
622 | |
623 | do { | |
95c8bc36 | 624 | greset = dwc2_readl(hsotg->regs + GRSTCTL); |
56f5b1cf PZ |
625 | if (++count > 10000) { |
626 | dev_warn(hsotg->dev, "%s() HANG! GRSTCTL=%0x\n", | |
627 | __func__, greset); | |
628 | break; | |
629 | } | |
630 | udelay(1); | |
631 | } while (greset & GRSTCTL_RXFFLSH); | |
632 | ||
633 | /* Wait for at least 3 PHY Clocks */ | |
634 | udelay(1); | |
635 | } | |
636 | ||
498f0669 | 637 | #define DWC2_OUT_OF_BOUNDS(a, b, c) ((a) < (b) || (a) > (c)) |
56f5b1cf PZ |
638 | |
639 | /* Parameter access functions */ | |
7218dae7 | 640 | void dwc2_set_param_otg_cap(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
641 | { |
642 | int valid = 1; | |
56f5b1cf PZ |
643 | |
644 | switch (val) { | |
645 | case DWC2_CAP_PARAM_HNP_SRP_CAPABLE: | |
9badec2f | 646 | if (hsotg->hw_params.op_mode != GHWCFG2_OP_MODE_HNP_SRP_CAPABLE) |
56f5b1cf PZ |
647 | valid = 0; |
648 | break; | |
649 | case DWC2_CAP_PARAM_SRP_ONLY_CAPABLE: | |
9badec2f | 650 | switch (hsotg->hw_params.op_mode) { |
56f5b1cf PZ |
651 | case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE: |
652 | case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE: | |
653 | case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE: | |
654 | case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST: | |
655 | break; | |
656 | default: | |
657 | valid = 0; | |
658 | break; | |
659 | } | |
660 | break; | |
661 | case DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE: | |
662 | /* always valid */ | |
663 | break; | |
664 | default: | |
665 | valid = 0; | |
666 | break; | |
667 | } | |
668 | ||
669 | if (!valid) { | |
670 | if (val >= 0) | |
671 | dev_err(hsotg->dev, | |
672 | "%d invalid for otg_cap parameter. Check HW configuration.\n", | |
673 | val); | |
9badec2f | 674 | switch (hsotg->hw_params.op_mode) { |
56f5b1cf PZ |
675 | case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE: |
676 | val = DWC2_CAP_PARAM_HNP_SRP_CAPABLE; | |
677 | break; | |
678 | case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE: | |
679 | case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE: | |
680 | case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST: | |
681 | val = DWC2_CAP_PARAM_SRP_ONLY_CAPABLE; | |
682 | break; | |
683 | default: | |
684 | val = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; | |
685 | break; | |
686 | } | |
687 | dev_dbg(hsotg->dev, "Setting otg_cap to %d\n", val); | |
56f5b1cf PZ |
688 | } |
689 | ||
690 | hsotg->core_params->otg_cap = val; | |
56f5b1cf PZ |
691 | } |
692 | ||
7218dae7 | 693 | void dwc2_set_param_dma_enable(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
694 | { |
695 | int valid = 1; | |
56f5b1cf | 696 | |
9badec2f | 697 | if (val > 0 && hsotg->hw_params.arch == GHWCFG2_SLAVE_ONLY_ARCH) |
56f5b1cf PZ |
698 | valid = 0; |
699 | if (val < 0) | |
700 | valid = 0; | |
701 | ||
702 | if (!valid) { | |
703 | if (val >= 0) | |
704 | dev_err(hsotg->dev, | |
705 | "%d invalid for dma_enable parameter. Check HW configuration.\n", | |
706 | val); | |
9badec2f | 707 | val = hsotg->hw_params.arch != GHWCFG2_SLAVE_ONLY_ARCH; |
56f5b1cf | 708 | dev_dbg(hsotg->dev, "Setting dma_enable to %d\n", val); |
56f5b1cf PZ |
709 | } |
710 | ||
711 | hsotg->core_params->dma_enable = val; | |
56f5b1cf PZ |
712 | } |
713 | ||
7218dae7 | 714 | void dwc2_set_param_dma_desc_enable(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
715 | { |
716 | int valid = 1; | |
56f5b1cf PZ |
717 | |
718 | if (val > 0 && (hsotg->core_params->dma_enable <= 0 || | |
9badec2f | 719 | !hsotg->hw_params.dma_desc_enable)) |
56f5b1cf PZ |
720 | valid = 0; |
721 | if (val < 0) | |
722 | valid = 0; | |
723 | ||
724 | if (!valid) { | |
725 | if (val >= 0) | |
726 | dev_err(hsotg->dev, | |
727 | "%d invalid for dma_desc_enable parameter. Check HW configuration.\n", | |
728 | val); | |
729 | val = (hsotg->core_params->dma_enable > 0 && | |
9badec2f | 730 | hsotg->hw_params.dma_desc_enable); |
56f5b1cf | 731 | dev_dbg(hsotg->dev, "Setting dma_desc_enable to %d\n", val); |
56f5b1cf PZ |
732 | } |
733 | ||
734 | hsotg->core_params->dma_desc_enable = val; | |
56f5b1cf PZ |
735 | } |
736 | ||
fbb9e22b MYK |
737 | void dwc2_set_param_dma_desc_fs_enable(struct dwc2_hsotg *hsotg, int val) |
738 | { | |
739 | int valid = 1; | |
740 | ||
741 | if (val > 0 && (hsotg->core_params->dma_enable <= 0 || | |
742 | !hsotg->hw_params.dma_desc_enable)) | |
743 | valid = 0; | |
744 | if (val < 0) | |
745 | valid = 0; | |
746 | ||
747 | if (!valid) { | |
748 | if (val >= 0) | |
749 | dev_err(hsotg->dev, | |
750 | "%d invalid for dma_desc_fs_enable parameter. Check HW configuration.\n", | |
751 | val); | |
752 | val = (hsotg->core_params->dma_enable > 0 && | |
753 | hsotg->hw_params.dma_desc_enable); | |
754 | } | |
755 | ||
756 | hsotg->core_params->dma_desc_fs_enable = val; | |
757 | dev_dbg(hsotg->dev, "Setting dma_desc_fs_enable to %d\n", val); | |
758 | } | |
759 | ||
7218dae7 PZ |
760 | void dwc2_set_param_host_support_fs_ls_low_power(struct dwc2_hsotg *hsotg, |
761 | int val) | |
56f5b1cf | 762 | { |
498f0669 | 763 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
764 | if (val >= 0) { |
765 | dev_err(hsotg->dev, | |
766 | "Wrong value for host_support_fs_low_power\n"); | |
767 | dev_err(hsotg->dev, | |
768 | "host_support_fs_low_power must be 0 or 1\n"); | |
769 | } | |
770 | val = 0; | |
771 | dev_dbg(hsotg->dev, | |
772 | "Setting host_support_fs_low_power to %d\n", val); | |
56f5b1cf PZ |
773 | } |
774 | ||
775 | hsotg->core_params->host_support_fs_ls_low_power = val; | |
56f5b1cf PZ |
776 | } |
777 | ||
7218dae7 | 778 | void dwc2_set_param_enable_dynamic_fifo(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
779 | { |
780 | int valid = 1; | |
56f5b1cf | 781 | |
9badec2f | 782 | if (val > 0 && !hsotg->hw_params.enable_dynamic_fifo) |
56f5b1cf PZ |
783 | valid = 0; |
784 | if (val < 0) | |
785 | valid = 0; | |
786 | ||
787 | if (!valid) { | |
788 | if (val >= 0) | |
789 | dev_err(hsotg->dev, | |
790 | "%d invalid for enable_dynamic_fifo parameter. Check HW configuration.\n", | |
791 | val); | |
9badec2f | 792 | val = hsotg->hw_params.enable_dynamic_fifo; |
56f5b1cf | 793 | dev_dbg(hsotg->dev, "Setting enable_dynamic_fifo to %d\n", val); |
56f5b1cf PZ |
794 | } |
795 | ||
796 | hsotg->core_params->enable_dynamic_fifo = val; | |
56f5b1cf PZ |
797 | } |
798 | ||
7218dae7 | 799 | void dwc2_set_param_host_rx_fifo_size(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
800 | { |
801 | int valid = 1; | |
56f5b1cf | 802 | |
9badec2f | 803 | if (val < 16 || val > hsotg->hw_params.host_rx_fifo_size) |
56f5b1cf PZ |
804 | valid = 0; |
805 | ||
806 | if (!valid) { | |
807 | if (val >= 0) | |
808 | dev_err(hsotg->dev, | |
809 | "%d invalid for host_rx_fifo_size. Check HW configuration.\n", | |
810 | val); | |
9badec2f | 811 | val = hsotg->hw_params.host_rx_fifo_size; |
56f5b1cf | 812 | dev_dbg(hsotg->dev, "Setting host_rx_fifo_size to %d\n", val); |
56f5b1cf PZ |
813 | } |
814 | ||
815 | hsotg->core_params->host_rx_fifo_size = val; | |
56f5b1cf PZ |
816 | } |
817 | ||
7218dae7 | 818 | void dwc2_set_param_host_nperio_tx_fifo_size(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
819 | { |
820 | int valid = 1; | |
56f5b1cf | 821 | |
9badec2f | 822 | if (val < 16 || val > hsotg->hw_params.host_nperio_tx_fifo_size) |
56f5b1cf PZ |
823 | valid = 0; |
824 | ||
825 | if (!valid) { | |
826 | if (val >= 0) | |
827 | dev_err(hsotg->dev, | |
828 | "%d invalid for host_nperio_tx_fifo_size. Check HW configuration.\n", | |
829 | val); | |
9badec2f | 830 | val = hsotg->hw_params.host_nperio_tx_fifo_size; |
56f5b1cf PZ |
831 | dev_dbg(hsotg->dev, "Setting host_nperio_tx_fifo_size to %d\n", |
832 | val); | |
56f5b1cf PZ |
833 | } |
834 | ||
835 | hsotg->core_params->host_nperio_tx_fifo_size = val; | |
56f5b1cf PZ |
836 | } |
837 | ||
7218dae7 | 838 | void dwc2_set_param_host_perio_tx_fifo_size(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
839 | { |
840 | int valid = 1; | |
56f5b1cf | 841 | |
9badec2f | 842 | if (val < 16 || val > hsotg->hw_params.host_perio_tx_fifo_size) |
56f5b1cf PZ |
843 | valid = 0; |
844 | ||
845 | if (!valid) { | |
846 | if (val >= 0) | |
847 | dev_err(hsotg->dev, | |
848 | "%d invalid for host_perio_tx_fifo_size. Check HW configuration.\n", | |
849 | val); | |
9badec2f | 850 | val = hsotg->hw_params.host_perio_tx_fifo_size; |
56f5b1cf PZ |
851 | dev_dbg(hsotg->dev, "Setting host_perio_tx_fifo_size to %d\n", |
852 | val); | |
56f5b1cf PZ |
853 | } |
854 | ||
855 | hsotg->core_params->host_perio_tx_fifo_size = val; | |
56f5b1cf PZ |
856 | } |
857 | ||
7218dae7 | 858 | void dwc2_set_param_max_transfer_size(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
859 | { |
860 | int valid = 1; | |
56f5b1cf | 861 | |
9badec2f | 862 | if (val < 2047 || val > hsotg->hw_params.max_transfer_size) |
56f5b1cf PZ |
863 | valid = 0; |
864 | ||
865 | if (!valid) { | |
866 | if (val >= 0) | |
867 | dev_err(hsotg->dev, | |
868 | "%d invalid for max_transfer_size. Check HW configuration.\n", | |
869 | val); | |
9badec2f | 870 | val = hsotg->hw_params.max_transfer_size; |
56f5b1cf | 871 | dev_dbg(hsotg->dev, "Setting max_transfer_size to %d\n", val); |
56f5b1cf PZ |
872 | } |
873 | ||
874 | hsotg->core_params->max_transfer_size = val; | |
56f5b1cf PZ |
875 | } |
876 | ||
7218dae7 | 877 | void dwc2_set_param_max_packet_count(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
878 | { |
879 | int valid = 1; | |
56f5b1cf | 880 | |
9badec2f | 881 | if (val < 15 || val > hsotg->hw_params.max_packet_count) |
56f5b1cf PZ |
882 | valid = 0; |
883 | ||
884 | if (!valid) { | |
885 | if (val >= 0) | |
886 | dev_err(hsotg->dev, | |
887 | "%d invalid for max_packet_count. Check HW configuration.\n", | |
888 | val); | |
9badec2f | 889 | val = hsotg->hw_params.max_packet_count; |
56f5b1cf | 890 | dev_dbg(hsotg->dev, "Setting max_packet_count to %d\n", val); |
56f5b1cf PZ |
891 | } |
892 | ||
893 | hsotg->core_params->max_packet_count = val; | |
56f5b1cf PZ |
894 | } |
895 | ||
7218dae7 | 896 | void dwc2_set_param_host_channels(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
897 | { |
898 | int valid = 1; | |
56f5b1cf | 899 | |
9badec2f | 900 | if (val < 1 || val > hsotg->hw_params.host_channels) |
56f5b1cf PZ |
901 | valid = 0; |
902 | ||
903 | if (!valid) { | |
904 | if (val >= 0) | |
905 | dev_err(hsotg->dev, | |
906 | "%d invalid for host_channels. Check HW configuration.\n", | |
907 | val); | |
9badec2f | 908 | val = hsotg->hw_params.host_channels; |
56f5b1cf | 909 | dev_dbg(hsotg->dev, "Setting host_channels to %d\n", val); |
56f5b1cf PZ |
910 | } |
911 | ||
912 | hsotg->core_params->host_channels = val; | |
56f5b1cf PZ |
913 | } |
914 | ||
7218dae7 | 915 | void dwc2_set_param_phy_type(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 916 | { |
56f5b1cf | 917 | int valid = 0; |
0464a3d2 | 918 | u32 hs_phy_type, fs_phy_type; |
56f5b1cf | 919 | |
498f0669 PZ |
920 | if (DWC2_OUT_OF_BOUNDS(val, DWC2_PHY_TYPE_PARAM_FS, |
921 | DWC2_PHY_TYPE_PARAM_ULPI)) { | |
56f5b1cf PZ |
922 | if (val >= 0) { |
923 | dev_err(hsotg->dev, "Wrong value for phy_type\n"); | |
924 | dev_err(hsotg->dev, "phy_type must be 0, 1 or 2\n"); | |
925 | } | |
926 | ||
56f5b1cf | 927 | valid = 0; |
56f5b1cf PZ |
928 | } |
929 | ||
9badec2f MK |
930 | hs_phy_type = hsotg->hw_params.hs_phy_type; |
931 | fs_phy_type = hsotg->hw_params.fs_phy_type; | |
56f5b1cf PZ |
932 | if (val == DWC2_PHY_TYPE_PARAM_UTMI && |
933 | (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI || | |
934 | hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI)) | |
935 | valid = 1; | |
936 | else if (val == DWC2_PHY_TYPE_PARAM_ULPI && | |
937 | (hs_phy_type == GHWCFG2_HS_PHY_TYPE_ULPI || | |
938 | hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI)) | |
939 | valid = 1; | |
940 | else if (val == DWC2_PHY_TYPE_PARAM_FS && | |
941 | fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED) | |
942 | valid = 1; | |
943 | ||
944 | if (!valid) { | |
945 | if (val >= 0) | |
946 | dev_err(hsotg->dev, | |
947 | "%d invalid for phy_type. Check HW configuration.\n", | |
948 | val); | |
929aea09 | 949 | val = DWC2_PHY_TYPE_PARAM_FS; |
56f5b1cf PZ |
950 | if (hs_phy_type != GHWCFG2_HS_PHY_TYPE_NOT_SUPPORTED) { |
951 | if (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI || | |
952 | hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI) | |
953 | val = DWC2_PHY_TYPE_PARAM_UTMI; | |
954 | else | |
955 | val = DWC2_PHY_TYPE_PARAM_ULPI; | |
956 | } | |
957 | dev_dbg(hsotg->dev, "Setting phy_type to %d\n", val); | |
56f5b1cf | 958 | } |
56f5b1cf PZ |
959 | |
960 | hsotg->core_params->phy_type = val; | |
56f5b1cf PZ |
961 | } |
962 | ||
963 | static int dwc2_get_param_phy_type(struct dwc2_hsotg *hsotg) | |
964 | { | |
965 | return hsotg->core_params->phy_type; | |
966 | } | |
967 | ||
7218dae7 | 968 | void dwc2_set_param_speed(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
969 | { |
970 | int valid = 1; | |
56f5b1cf | 971 | |
498f0669 | 972 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
973 | if (val >= 0) { |
974 | dev_err(hsotg->dev, "Wrong value for speed parameter\n"); | |
975 | dev_err(hsotg->dev, "max_speed parameter must be 0 or 1\n"); | |
976 | } | |
977 | valid = 0; | |
978 | } | |
979 | ||
929aea09 MK |
980 | if (val == DWC2_SPEED_PARAM_HIGH && |
981 | dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS) | |
56f5b1cf PZ |
982 | valid = 0; |
983 | ||
984 | if (!valid) { | |
985 | if (val >= 0) | |
986 | dev_err(hsotg->dev, | |
987 | "%d invalid for speed parameter. Check HW configuration.\n", | |
988 | val); | |
989 | val = dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS ? | |
929aea09 | 990 | DWC2_SPEED_PARAM_FULL : DWC2_SPEED_PARAM_HIGH; |
56f5b1cf | 991 | dev_dbg(hsotg->dev, "Setting speed to %d\n", val); |
56f5b1cf PZ |
992 | } |
993 | ||
994 | hsotg->core_params->speed = val; | |
56f5b1cf PZ |
995 | } |
996 | ||
7218dae7 | 997 | void dwc2_set_param_host_ls_low_power_phy_clk(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
998 | { |
999 | int valid = 1; | |
56f5b1cf | 1000 | |
498f0669 PZ |
1001 | if (DWC2_OUT_OF_BOUNDS(val, DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ, |
1002 | DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ)) { | |
56f5b1cf PZ |
1003 | if (val >= 0) { |
1004 | dev_err(hsotg->dev, | |
1005 | "Wrong value for host_ls_low_power_phy_clk parameter\n"); | |
1006 | dev_err(hsotg->dev, | |
1007 | "host_ls_low_power_phy_clk must be 0 or 1\n"); | |
1008 | } | |
1009 | valid = 0; | |
1010 | } | |
1011 | ||
1012 | if (val == DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ && | |
1013 | dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS) | |
1014 | valid = 0; | |
1015 | ||
1016 | if (!valid) { | |
1017 | if (val >= 0) | |
1018 | dev_err(hsotg->dev, | |
1019 | "%d invalid for host_ls_low_power_phy_clk. Check HW configuration.\n", | |
1020 | val); | |
1021 | val = dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS | |
1022 | ? DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ | |
1023 | : DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ; | |
1024 | dev_dbg(hsotg->dev, "Setting host_ls_low_power_phy_clk to %d\n", | |
1025 | val); | |
56f5b1cf PZ |
1026 | } |
1027 | ||
1028 | hsotg->core_params->host_ls_low_power_phy_clk = val; | |
56f5b1cf PZ |
1029 | } |
1030 | ||
7218dae7 | 1031 | void dwc2_set_param_phy_ulpi_ddr(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1032 | { |
498f0669 | 1033 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1034 | if (val >= 0) { |
1035 | dev_err(hsotg->dev, "Wrong value for phy_ulpi_ddr\n"); | |
1036 | dev_err(hsotg->dev, "phy_upli_ddr must be 0 or 1\n"); | |
1037 | } | |
1038 | val = 0; | |
1039 | dev_dbg(hsotg->dev, "Setting phy_upli_ddr to %d\n", val); | |
56f5b1cf PZ |
1040 | } |
1041 | ||
1042 | hsotg->core_params->phy_ulpi_ddr = val; | |
56f5b1cf PZ |
1043 | } |
1044 | ||
7218dae7 | 1045 | void dwc2_set_param_phy_ulpi_ext_vbus(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1046 | { |
498f0669 | 1047 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1048 | if (val >= 0) { |
1049 | dev_err(hsotg->dev, | |
1050 | "Wrong value for phy_ulpi_ext_vbus\n"); | |
1051 | dev_err(hsotg->dev, | |
1052 | "phy_ulpi_ext_vbus must be 0 or 1\n"); | |
1053 | } | |
1054 | val = 0; | |
1055 | dev_dbg(hsotg->dev, "Setting phy_ulpi_ext_vbus to %d\n", val); | |
56f5b1cf PZ |
1056 | } |
1057 | ||
1058 | hsotg->core_params->phy_ulpi_ext_vbus = val; | |
56f5b1cf PZ |
1059 | } |
1060 | ||
7218dae7 | 1061 | void dwc2_set_param_phy_utmi_width(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1062 | { |
de4a1931 | 1063 | int valid = 0; |
56f5b1cf | 1064 | |
de4a1931 MK |
1065 | switch (hsotg->hw_params.utmi_phy_data_width) { |
1066 | case GHWCFG4_UTMI_PHY_DATA_WIDTH_8: | |
1067 | valid = (val == 8); | |
1068 | break; | |
1069 | case GHWCFG4_UTMI_PHY_DATA_WIDTH_16: | |
1070 | valid = (val == 16); | |
1071 | break; | |
1072 | case GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16: | |
1073 | valid = (val == 8 || val == 16); | |
1074 | break; | |
1075 | } | |
1076 | ||
1077 | if (!valid) { | |
56f5b1cf | 1078 | if (val >= 0) { |
de4a1931 MK |
1079 | dev_err(hsotg->dev, |
1080 | "%d invalid for phy_utmi_width. Check HW configuration.\n", | |
1081 | val); | |
56f5b1cf | 1082 | } |
de4a1931 MK |
1083 | val = (hsotg->hw_params.utmi_phy_data_width == |
1084 | GHWCFG4_UTMI_PHY_DATA_WIDTH_8) ? 8 : 16; | |
56f5b1cf | 1085 | dev_dbg(hsotg->dev, "Setting phy_utmi_width to %d\n", val); |
56f5b1cf PZ |
1086 | } |
1087 | ||
1088 | hsotg->core_params->phy_utmi_width = val; | |
56f5b1cf PZ |
1089 | } |
1090 | ||
7218dae7 | 1091 | void dwc2_set_param_ulpi_fs_ls(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1092 | { |
498f0669 | 1093 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1094 | if (val >= 0) { |
1095 | dev_err(hsotg->dev, "Wrong value for ulpi_fs_ls\n"); | |
1096 | dev_err(hsotg->dev, "ulpi_fs_ls must be 0 or 1\n"); | |
1097 | } | |
1098 | val = 0; | |
1099 | dev_dbg(hsotg->dev, "Setting ulpi_fs_ls to %d\n", val); | |
56f5b1cf PZ |
1100 | } |
1101 | ||
1102 | hsotg->core_params->ulpi_fs_ls = val; | |
56f5b1cf PZ |
1103 | } |
1104 | ||
7218dae7 | 1105 | void dwc2_set_param_ts_dline(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1106 | { |
498f0669 | 1107 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1108 | if (val >= 0) { |
1109 | dev_err(hsotg->dev, "Wrong value for ts_dline\n"); | |
1110 | dev_err(hsotg->dev, "ts_dline must be 0 or 1\n"); | |
1111 | } | |
1112 | val = 0; | |
1113 | dev_dbg(hsotg->dev, "Setting ts_dline to %d\n", val); | |
56f5b1cf PZ |
1114 | } |
1115 | ||
1116 | hsotg->core_params->ts_dline = val; | |
56f5b1cf PZ |
1117 | } |
1118 | ||
7218dae7 | 1119 | void dwc2_set_param_i2c_enable(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1120 | { |
56f5b1cf | 1121 | int valid = 1; |
56f5b1cf | 1122 | |
498f0669 | 1123 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1124 | if (val >= 0) { |
1125 | dev_err(hsotg->dev, "Wrong value for i2c_enable\n"); | |
1126 | dev_err(hsotg->dev, "i2c_enable must be 0 or 1\n"); | |
1127 | } | |
1128 | ||
56f5b1cf | 1129 | valid = 0; |
56f5b1cf PZ |
1130 | } |
1131 | ||
9badec2f | 1132 | if (val == 1 && !(hsotg->hw_params.i2c_enable)) |
56f5b1cf PZ |
1133 | valid = 0; |
1134 | ||
1135 | if (!valid) { | |
1136 | if (val >= 0) | |
1137 | dev_err(hsotg->dev, | |
1138 | "%d invalid for i2c_enable. Check HW configuration.\n", | |
1139 | val); | |
9badec2f | 1140 | val = hsotg->hw_params.i2c_enable; |
56f5b1cf | 1141 | dev_dbg(hsotg->dev, "Setting i2c_enable to %d\n", val); |
56f5b1cf | 1142 | } |
56f5b1cf PZ |
1143 | |
1144 | hsotg->core_params->i2c_enable = val; | |
56f5b1cf PZ |
1145 | } |
1146 | ||
7218dae7 | 1147 | void dwc2_set_param_en_multiple_tx_fifo(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
1148 | { |
1149 | int valid = 1; | |
56f5b1cf | 1150 | |
498f0669 | 1151 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1152 | if (val >= 0) { |
1153 | dev_err(hsotg->dev, | |
1154 | "Wrong value for en_multiple_tx_fifo,\n"); | |
1155 | dev_err(hsotg->dev, | |
1156 | "en_multiple_tx_fifo must be 0 or 1\n"); | |
1157 | } | |
1158 | valid = 0; | |
1159 | } | |
1160 | ||
9badec2f | 1161 | if (val == 1 && !hsotg->hw_params.en_multiple_tx_fifo) |
56f5b1cf PZ |
1162 | valid = 0; |
1163 | ||
1164 | if (!valid) { | |
1165 | if (val >= 0) | |
1166 | dev_err(hsotg->dev, | |
1167 | "%d invalid for parameter en_multiple_tx_fifo. Check HW configuration.\n", | |
1168 | val); | |
9badec2f | 1169 | val = hsotg->hw_params.en_multiple_tx_fifo; |
56f5b1cf | 1170 | dev_dbg(hsotg->dev, "Setting en_multiple_tx_fifo to %d\n", val); |
56f5b1cf PZ |
1171 | } |
1172 | ||
1173 | hsotg->core_params->en_multiple_tx_fifo = val; | |
56f5b1cf PZ |
1174 | } |
1175 | ||
7218dae7 | 1176 | void dwc2_set_param_reload_ctl(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf PZ |
1177 | { |
1178 | int valid = 1; | |
56f5b1cf | 1179 | |
498f0669 | 1180 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1181 | if (val >= 0) { |
1182 | dev_err(hsotg->dev, | |
1183 | "'%d' invalid for parameter reload_ctl\n", val); | |
1184 | dev_err(hsotg->dev, "reload_ctl must be 0 or 1\n"); | |
1185 | } | |
1186 | valid = 0; | |
1187 | } | |
1188 | ||
9badec2f | 1189 | if (val == 1 && hsotg->hw_params.snpsid < DWC2_CORE_REV_2_92a) |
56f5b1cf PZ |
1190 | valid = 0; |
1191 | ||
1192 | if (!valid) { | |
1193 | if (val >= 0) | |
1194 | dev_err(hsotg->dev, | |
1195 | "%d invalid for parameter reload_ctl. Check HW configuration.\n", | |
1196 | val); | |
9badec2f | 1197 | val = hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_92a; |
56f5b1cf | 1198 | dev_dbg(hsotg->dev, "Setting reload_ctl to %d\n", val); |
56f5b1cf PZ |
1199 | } |
1200 | ||
1201 | hsotg->core_params->reload_ctl = val; | |
56f5b1cf PZ |
1202 | } |
1203 | ||
7218dae7 | 1204 | void dwc2_set_param_ahbcfg(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1205 | { |
4d3190e1 PZ |
1206 | if (val != -1) |
1207 | hsotg->core_params->ahbcfg = val; | |
1208 | else | |
f9234633 | 1209 | hsotg->core_params->ahbcfg = GAHBCFG_HBSTLEN_INCR4 << |
0464a3d2 | 1210 | GAHBCFG_HBSTLEN_SHIFT; |
56f5b1cf PZ |
1211 | } |
1212 | ||
7218dae7 | 1213 | void dwc2_set_param_otg_ver(struct dwc2_hsotg *hsotg, int val) |
56f5b1cf | 1214 | { |
498f0669 | 1215 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { |
56f5b1cf PZ |
1216 | if (val >= 0) { |
1217 | dev_err(hsotg->dev, | |
1218 | "'%d' invalid for parameter otg_ver\n", val); | |
1219 | dev_err(hsotg->dev, | |
1220 | "otg_ver must be 0 (for OTG 1.3 support) or 1 (for OTG 2.0 support)\n"); | |
1221 | } | |
1222 | val = 0; | |
1223 | dev_dbg(hsotg->dev, "Setting otg_ver to %d\n", val); | |
56f5b1cf PZ |
1224 | } |
1225 | ||
1226 | hsotg->core_params->otg_ver = val; | |
56f5b1cf PZ |
1227 | } |
1228 | ||
49cf10c6 | 1229 | static void dwc2_set_param_uframe_sched(struct dwc2_hsotg *hsotg, int val) |
e8576e68 PZ |
1230 | { |
1231 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { | |
1232 | if (val >= 0) { | |
1233 | dev_err(hsotg->dev, | |
1234 | "'%d' invalid for parameter uframe_sched\n", | |
1235 | val); | |
1236 | dev_err(hsotg->dev, "uframe_sched must be 0 or 1\n"); | |
1237 | } | |
1238 | val = 1; | |
1239 | dev_dbg(hsotg->dev, "Setting uframe_sched to %d\n", val); | |
1240 | } | |
1241 | ||
1242 | hsotg->core_params->uframe_sched = val; | |
1243 | } | |
1244 | ||
a6d249d8 GH |
1245 | static void dwc2_set_param_external_id_pin_ctl(struct dwc2_hsotg *hsotg, |
1246 | int val) | |
1247 | { | |
1248 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { | |
1249 | if (val >= 0) { | |
1250 | dev_err(hsotg->dev, | |
1251 | "'%d' invalid for parameter external_id_pin_ctl\n", | |
1252 | val); | |
1253 | dev_err(hsotg->dev, "external_id_pin_ctl must be 0 or 1\n"); | |
1254 | } | |
1255 | val = 0; | |
1256 | dev_dbg(hsotg->dev, "Setting external_id_pin_ctl to %d\n", val); | |
1257 | } | |
1258 | ||
1259 | hsotg->core_params->external_id_pin_ctl = val; | |
1260 | } | |
1261 | ||
285046aa GH |
1262 | static void dwc2_set_param_hibernation(struct dwc2_hsotg *hsotg, |
1263 | int val) | |
1264 | { | |
1265 | if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) { | |
1266 | if (val >= 0) { | |
1267 | dev_err(hsotg->dev, | |
1268 | "'%d' invalid for parameter hibernation\n", | |
1269 | val); | |
1270 | dev_err(hsotg->dev, "hibernation must be 0 or 1\n"); | |
1271 | } | |
1272 | val = 0; | |
1273 | dev_dbg(hsotg->dev, "Setting hibernation to %d\n", val); | |
1274 | } | |
1275 | ||
1276 | hsotg->core_params->hibernation = val; | |
1277 | } | |
1278 | ||
e8576e68 PZ |
1279 | /* |
1280 | * This function is called during module intialization to pass module parameters | |
1281 | * for the DWC_otg core. | |
1282 | */ | |
1283 | void dwc2_set_parameters(struct dwc2_hsotg *hsotg, | |
1284 | const struct dwc2_core_params *params) | |
1285 | { | |
1286 | dev_dbg(hsotg->dev, "%s()\n", __func__); | |
1287 | ||
1288 | dwc2_set_param_otg_cap(hsotg, params->otg_cap); | |
1289 | dwc2_set_param_dma_enable(hsotg, params->dma_enable); | |
1290 | dwc2_set_param_dma_desc_enable(hsotg, params->dma_desc_enable); | |
fbb9e22b | 1291 | dwc2_set_param_dma_desc_fs_enable(hsotg, params->dma_desc_fs_enable); |
e8576e68 PZ |
1292 | dwc2_set_param_host_support_fs_ls_low_power(hsotg, |
1293 | params->host_support_fs_ls_low_power); | |
1294 | dwc2_set_param_enable_dynamic_fifo(hsotg, | |
1295 | params->enable_dynamic_fifo); | |
1296 | dwc2_set_param_host_rx_fifo_size(hsotg, | |
1297 | params->host_rx_fifo_size); | |
1298 | dwc2_set_param_host_nperio_tx_fifo_size(hsotg, | |
1299 | params->host_nperio_tx_fifo_size); | |
1300 | dwc2_set_param_host_perio_tx_fifo_size(hsotg, | |
1301 | params->host_perio_tx_fifo_size); | |
1302 | dwc2_set_param_max_transfer_size(hsotg, | |
1303 | params->max_transfer_size); | |
1304 | dwc2_set_param_max_packet_count(hsotg, | |
1305 | params->max_packet_count); | |
1306 | dwc2_set_param_host_channels(hsotg, params->host_channels); | |
1307 | dwc2_set_param_phy_type(hsotg, params->phy_type); | |
1308 | dwc2_set_param_speed(hsotg, params->speed); | |
1309 | dwc2_set_param_host_ls_low_power_phy_clk(hsotg, | |
1310 | params->host_ls_low_power_phy_clk); | |
1311 | dwc2_set_param_phy_ulpi_ddr(hsotg, params->phy_ulpi_ddr); | |
1312 | dwc2_set_param_phy_ulpi_ext_vbus(hsotg, | |
1313 | params->phy_ulpi_ext_vbus); | |
1314 | dwc2_set_param_phy_utmi_width(hsotg, params->phy_utmi_width); | |
1315 | dwc2_set_param_ulpi_fs_ls(hsotg, params->ulpi_fs_ls); | |
1316 | dwc2_set_param_ts_dline(hsotg, params->ts_dline); | |
1317 | dwc2_set_param_i2c_enable(hsotg, params->i2c_enable); | |
1318 | dwc2_set_param_en_multiple_tx_fifo(hsotg, | |
1319 | params->en_multiple_tx_fifo); | |
1320 | dwc2_set_param_reload_ctl(hsotg, params->reload_ctl); | |
1321 | dwc2_set_param_ahbcfg(hsotg, params->ahbcfg); | |
1322 | dwc2_set_param_otg_ver(hsotg, params->otg_ver); | |
1323 | dwc2_set_param_uframe_sched(hsotg, params->uframe_sched); | |
a6d249d8 | 1324 | dwc2_set_param_external_id_pin_ctl(hsotg, params->external_id_pin_ctl); |
285046aa | 1325 | dwc2_set_param_hibernation(hsotg, params->hibernation); |
e8576e68 PZ |
1326 | } |
1327 | ||
09c96980 JY |
1328 | /* |
1329 | * Forces either host or device mode if the controller is not | |
1330 | * currently in that mode. | |
1331 | * | |
1332 | * Returns true if the mode was forced. | |
1333 | */ | |
1334 | static bool dwc2_force_mode_if_needed(struct dwc2_hsotg *hsotg, bool host) | |
1335 | { | |
1336 | if (host && dwc2_is_host_mode(hsotg)) | |
1337 | return false; | |
1338 | else if (!host && dwc2_is_device_mode(hsotg)) | |
1339 | return false; | |
1340 | ||
1341 | return dwc2_force_mode(hsotg, host); | |
1342 | } | |
1343 | ||
55e1040e JY |
1344 | /* |
1345 | * Gets host hardware parameters. Forces host mode if not currently in | |
1346 | * host mode. Should be called immediately after a core soft reset in | |
1347 | * order to get the reset values. | |
1348 | */ | |
1349 | static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg) | |
1350 | { | |
1351 | struct dwc2_hw_params *hw = &hsotg->hw_params; | |
1352 | u32 gnptxfsiz; | |
1353 | u32 hptxfsiz; | |
1354 | bool forced; | |
1355 | ||
1356 | if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) | |
1357 | return; | |
1358 | ||
1359 | forced = dwc2_force_mode_if_needed(hsotg, true); | |
1360 | ||
1361 | gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ); | |
1362 | hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ); | |
1363 | dev_dbg(hsotg->dev, "gnptxfsiz=%08x\n", gnptxfsiz); | |
1364 | dev_dbg(hsotg->dev, "hptxfsiz=%08x\n", hptxfsiz); | |
1365 | ||
1366 | if (forced) | |
1367 | dwc2_clear_force_mode(hsotg); | |
1368 | ||
1369 | hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >> | |
1370 | FIFOSIZE_DEPTH_SHIFT; | |
1371 | hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >> | |
1372 | FIFOSIZE_DEPTH_SHIFT; | |
1373 | } | |
1374 | ||
1375 | /* | |
1376 | * Gets device hardware parameters. Forces device mode if not | |
1377 | * currently in device mode. Should be called immediately after a core | |
1378 | * soft reset in order to get the reset values. | |
1379 | */ | |
1380 | static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg) | |
1381 | { | |
1382 | struct dwc2_hw_params *hw = &hsotg->hw_params; | |
1383 | bool forced; | |
1384 | u32 gnptxfsiz; | |
1385 | ||
1386 | if (hsotg->dr_mode == USB_DR_MODE_HOST) | |
1387 | return; | |
1388 | ||
1389 | forced = dwc2_force_mode_if_needed(hsotg, false); | |
1390 | ||
1391 | gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ); | |
1392 | dev_dbg(hsotg->dev, "gnptxfsiz=%08x\n", gnptxfsiz); | |
1393 | ||
1394 | if (forced) | |
1395 | dwc2_clear_force_mode(hsotg); | |
1396 | ||
1397 | hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >> | |
1398 | FIFOSIZE_DEPTH_SHIFT; | |
1399 | } | |
1400 | ||
9badec2f MK |
1401 | /** |
1402 | * During device initialization, read various hardware configuration | |
1403 | * registers and interpret the contents. | |
1404 | */ | |
1405 | int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) | |
1406 | { | |
1407 | struct dwc2_hw_params *hw = &hsotg->hw_params; | |
1408 | unsigned width; | |
1409 | u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4; | |
55e1040e | 1410 | u32 grxfsiz; |
9badec2f MK |
1411 | |
1412 | /* | |
1413 | * Attempt to ensure this device is really a DWC_otg Controller. | |
1414 | * Read and verify the GSNPSID register contents. The value should be | |
1415 | * 0x45f42xxx or 0x45f43xxx, which corresponds to either "OT2" or "OT3", | |
1416 | * as in "OTG version 2.xx" or "OTG version 3.xx". | |
1417 | */ | |
95c8bc36 | 1418 | hw->snpsid = dwc2_readl(hsotg->regs + GSNPSID); |
9badec2f MK |
1419 | if ((hw->snpsid & 0xfffff000) != 0x4f542000 && |
1420 | (hw->snpsid & 0xfffff000) != 0x4f543000) { | |
1421 | dev_err(hsotg->dev, "Bad value for GSNPSID: 0x%08x\n", | |
1422 | hw->snpsid); | |
1423 | return -ENODEV; | |
1424 | } | |
1425 | ||
1426 | dev_dbg(hsotg->dev, "Core Release: %1x.%1x%1x%1x (snpsid=%x)\n", | |
1427 | hw->snpsid >> 12 & 0xf, hw->snpsid >> 8 & 0xf, | |
1428 | hw->snpsid >> 4 & 0xf, hw->snpsid & 0xf, hw->snpsid); | |
1429 | ||
95c8bc36 AS |
1430 | hwcfg1 = dwc2_readl(hsotg->regs + GHWCFG1); |
1431 | hwcfg2 = dwc2_readl(hsotg->regs + GHWCFG2); | |
1432 | hwcfg3 = dwc2_readl(hsotg->regs + GHWCFG3); | |
1433 | hwcfg4 = dwc2_readl(hsotg->regs + GHWCFG4); | |
1434 | grxfsiz = dwc2_readl(hsotg->regs + GRXFSIZ); | |
9badec2f MK |
1435 | |
1436 | dev_dbg(hsotg->dev, "hwcfg1=%08x\n", hwcfg1); | |
1437 | dev_dbg(hsotg->dev, "hwcfg2=%08x\n", hwcfg2); | |
1438 | dev_dbg(hsotg->dev, "hwcfg3=%08x\n", hwcfg3); | |
1439 | dev_dbg(hsotg->dev, "hwcfg4=%08x\n", hwcfg4); | |
9badec2f MK |
1440 | dev_dbg(hsotg->dev, "grxfsiz=%08x\n", grxfsiz); |
1441 | ||
55e1040e JY |
1442 | /* |
1443 | * Host specific hardware parameters. Reading these parameters | |
1444 | * requires the controller to be in host mode. The mode will | |
1445 | * be forced, if necessary, to read these values. | |
1446 | */ | |
1447 | dwc2_get_host_hwparams(hsotg); | |
1448 | dwc2_get_dev_hwparams(hsotg); | |
9badec2f | 1449 | |
55e1040e JY |
1450 | /* hwcfg1 */ |
1451 | hw->dev_ep_dirs = hwcfg1; | |
9badec2f MK |
1452 | |
1453 | /* hwcfg2 */ | |
1454 | hw->op_mode = (hwcfg2 & GHWCFG2_OP_MODE_MASK) >> | |
1455 | GHWCFG2_OP_MODE_SHIFT; | |
1456 | hw->arch = (hwcfg2 & GHWCFG2_ARCHITECTURE_MASK) >> | |
1457 | GHWCFG2_ARCHITECTURE_SHIFT; | |
1458 | hw->enable_dynamic_fifo = !!(hwcfg2 & GHWCFG2_DYNAMIC_FIFO); | |
1459 | hw->host_channels = 1 + ((hwcfg2 & GHWCFG2_NUM_HOST_CHAN_MASK) >> | |
1460 | GHWCFG2_NUM_HOST_CHAN_SHIFT); | |
1461 | hw->hs_phy_type = (hwcfg2 & GHWCFG2_HS_PHY_TYPE_MASK) >> | |
1462 | GHWCFG2_HS_PHY_TYPE_SHIFT; | |
1463 | hw->fs_phy_type = (hwcfg2 & GHWCFG2_FS_PHY_TYPE_MASK) >> | |
1464 | GHWCFG2_FS_PHY_TYPE_SHIFT; | |
1465 | hw->num_dev_ep = (hwcfg2 & GHWCFG2_NUM_DEV_EP_MASK) >> | |
1466 | GHWCFG2_NUM_DEV_EP_SHIFT; | |
1467 | hw->nperio_tx_q_depth = | |
1468 | (hwcfg2 & GHWCFG2_NONPERIO_TX_Q_DEPTH_MASK) >> | |
1469 | GHWCFG2_NONPERIO_TX_Q_DEPTH_SHIFT << 1; | |
1470 | hw->host_perio_tx_q_depth = | |
1471 | (hwcfg2 & GHWCFG2_HOST_PERIO_TX_Q_DEPTH_MASK) >> | |
1472 | GHWCFG2_HOST_PERIO_TX_Q_DEPTH_SHIFT << 1; | |
1473 | hw->dev_token_q_depth = | |
1474 | (hwcfg2 & GHWCFG2_DEV_TOKEN_Q_DEPTH_MASK) >> | |
1475 | GHWCFG2_DEV_TOKEN_Q_DEPTH_SHIFT; | |
1476 | ||
1477 | /* hwcfg3 */ | |
1478 | width = (hwcfg3 & GHWCFG3_XFER_SIZE_CNTR_WIDTH_MASK) >> | |
1479 | GHWCFG3_XFER_SIZE_CNTR_WIDTH_SHIFT; | |
1480 | hw->max_transfer_size = (1 << (width + 11)) - 1; | |
1481 | width = (hwcfg3 & GHWCFG3_PACKET_SIZE_CNTR_WIDTH_MASK) >> | |
1482 | GHWCFG3_PACKET_SIZE_CNTR_WIDTH_SHIFT; | |
1483 | hw->max_packet_count = (1 << (width + 4)) - 1; | |
1484 | hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C); | |
1485 | hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >> | |
1486 | GHWCFG3_DFIFO_DEPTH_SHIFT; | |
1487 | ||
1488 | /* hwcfg4 */ | |
1489 | hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN); | |
1490 | hw->num_dev_perio_in_ep = (hwcfg4 & GHWCFG4_NUM_DEV_PERIO_IN_EP_MASK) >> | |
1491 | GHWCFG4_NUM_DEV_PERIO_IN_EP_SHIFT; | |
1492 | hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA); | |
1493 | hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ); | |
de4a1931 MK |
1494 | hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >> |
1495 | GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT; | |
9badec2f MK |
1496 | |
1497 | /* fifo sizes */ | |
1498 | hw->host_rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >> | |
1499 | GRXFSIZ_DEPTH_SHIFT; | |
9badec2f MK |
1500 | |
1501 | dev_dbg(hsotg->dev, "Detected values from hardware:\n"); | |
1502 | dev_dbg(hsotg->dev, " op_mode=%d\n", | |
1503 | hw->op_mode); | |
1504 | dev_dbg(hsotg->dev, " arch=%d\n", | |
1505 | hw->arch); | |
1506 | dev_dbg(hsotg->dev, " dma_desc_enable=%d\n", | |
1507 | hw->dma_desc_enable); | |
1508 | dev_dbg(hsotg->dev, " power_optimized=%d\n", | |
1509 | hw->power_optimized); | |
1510 | dev_dbg(hsotg->dev, " i2c_enable=%d\n", | |
1511 | hw->i2c_enable); | |
1512 | dev_dbg(hsotg->dev, " hs_phy_type=%d\n", | |
1513 | hw->hs_phy_type); | |
1514 | dev_dbg(hsotg->dev, " fs_phy_type=%d\n", | |
1515 | hw->fs_phy_type); | |
971bd8fa | 1516 | dev_dbg(hsotg->dev, " utmi_phy_data_width=%d\n", |
de4a1931 | 1517 | hw->utmi_phy_data_width); |
9badec2f MK |
1518 | dev_dbg(hsotg->dev, " num_dev_ep=%d\n", |
1519 | hw->num_dev_ep); | |
1520 | dev_dbg(hsotg->dev, " num_dev_perio_in_ep=%d\n", | |
1521 | hw->num_dev_perio_in_ep); | |
1522 | dev_dbg(hsotg->dev, " host_channels=%d\n", | |
1523 | hw->host_channels); | |
1524 | dev_dbg(hsotg->dev, " max_transfer_size=%d\n", | |
1525 | hw->max_transfer_size); | |
1526 | dev_dbg(hsotg->dev, " max_packet_count=%d\n", | |
1527 | hw->max_packet_count); | |
1528 | dev_dbg(hsotg->dev, " nperio_tx_q_depth=0x%0x\n", | |
1529 | hw->nperio_tx_q_depth); | |
1530 | dev_dbg(hsotg->dev, " host_perio_tx_q_depth=0x%0x\n", | |
1531 | hw->host_perio_tx_q_depth); | |
1532 | dev_dbg(hsotg->dev, " dev_token_q_depth=0x%0x\n", | |
1533 | hw->dev_token_q_depth); | |
1534 | dev_dbg(hsotg->dev, " enable_dynamic_fifo=%d\n", | |
1535 | hw->enable_dynamic_fifo); | |
1536 | dev_dbg(hsotg->dev, " en_multiple_tx_fifo=%d\n", | |
1537 | hw->en_multiple_tx_fifo); | |
1538 | dev_dbg(hsotg->dev, " total_fifo_size=%d\n", | |
1539 | hw->total_fifo_size); | |
1540 | dev_dbg(hsotg->dev, " host_rx_fifo_size=%d\n", | |
1541 | hw->host_rx_fifo_size); | |
1542 | dev_dbg(hsotg->dev, " host_nperio_tx_fifo_size=%d\n", | |
1543 | hw->host_nperio_tx_fifo_size); | |
1544 | dev_dbg(hsotg->dev, " host_perio_tx_fifo_size=%d\n", | |
1545 | hw->host_perio_tx_fifo_size); | |
1546 | dev_dbg(hsotg->dev, "\n"); | |
1547 | ||
1548 | return 0; | |
1549 | } | |
ecb176c6 MYK |
1550 | |
1551 | /* | |
1552 | * Sets all parameters to the given value. | |
1553 | * | |
1554 | * Assumes that the dwc2_core_params struct contains only integers. | |
1555 | */ | |
1556 | void dwc2_set_all_params(struct dwc2_core_params *params, int value) | |
1557 | { | |
1558 | int *p = (int *)params; | |
1559 | size_t size = sizeof(*params) / sizeof(*p); | |
1560 | int i; | |
1561 | ||
1562 | for (i = 0; i < size; i++) | |
1563 | p[i] = value; | |
1564 | } | |
ecb176c6 | 1565 | |
9badec2f | 1566 | |
56f5b1cf PZ |
1567 | u16 dwc2_get_otg_version(struct dwc2_hsotg *hsotg) |
1568 | { | |
b66a3f05 | 1569 | return hsotg->core_params->otg_ver == 1 ? 0x0200 : 0x0103; |
56f5b1cf PZ |
1570 | } |
1571 | ||
057715f2 | 1572 | bool dwc2_is_controller_alive(struct dwc2_hsotg *hsotg) |
56f5b1cf | 1573 | { |
95c8bc36 | 1574 | if (dwc2_readl(hsotg->regs + GSNPSID) == 0xffffffff) |
057715f2 | 1575 | return false; |
56f5b1cf | 1576 | else |
057715f2 | 1577 | return true; |
56f5b1cf PZ |
1578 | } |
1579 | ||
1580 | /** | |
1581 | * dwc2_enable_global_interrupts() - Enables the controller's Global | |
1582 | * Interrupt in the AHB Config register | |
1583 | * | |
1584 | * @hsotg: Programming view of DWC_otg controller | |
1585 | */ | |
1586 | void dwc2_enable_global_interrupts(struct dwc2_hsotg *hsotg) | |
1587 | { | |
95c8bc36 | 1588 | u32 ahbcfg = dwc2_readl(hsotg->regs + GAHBCFG); |
56f5b1cf PZ |
1589 | |
1590 | ahbcfg |= GAHBCFG_GLBL_INTR_EN; | |
95c8bc36 | 1591 | dwc2_writel(ahbcfg, hsotg->regs + GAHBCFG); |
56f5b1cf PZ |
1592 | } |
1593 | ||
1594 | /** | |
1595 | * dwc2_disable_global_interrupts() - Disables the controller's Global | |
1596 | * Interrupt in the AHB Config register | |
1597 | * | |
1598 | * @hsotg: Programming view of DWC_otg controller | |
1599 | */ | |
1600 | void dwc2_disable_global_interrupts(struct dwc2_hsotg *hsotg) | |
1601 | { | |
95c8bc36 | 1602 | u32 ahbcfg = dwc2_readl(hsotg->regs + GAHBCFG); |
56f5b1cf PZ |
1603 | |
1604 | ahbcfg &= ~GAHBCFG_GLBL_INTR_EN; | |
95c8bc36 | 1605 | dwc2_writel(ahbcfg, hsotg->regs + GAHBCFG); |
56f5b1cf PZ |
1606 | } |
1607 | ||
6bea9620 JY |
1608 | /* Returns the controller's GHWCFG2.OTG_MODE. */ |
1609 | unsigned dwc2_op_mode(struct dwc2_hsotg *hsotg) | |
1610 | { | |
1611 | u32 ghwcfg2 = dwc2_readl(hsotg->regs + GHWCFG2); | |
1612 | ||
1613 | return (ghwcfg2 & GHWCFG2_OP_MODE_MASK) >> | |
1614 | GHWCFG2_OP_MODE_SHIFT; | |
1615 | } | |
1616 | ||
1617 | /* Returns true if the controller is capable of DRD. */ | |
1618 | bool dwc2_hw_is_otg(struct dwc2_hsotg *hsotg) | |
1619 | { | |
1620 | unsigned op_mode = dwc2_op_mode(hsotg); | |
1621 | ||
1622 | return (op_mode == GHWCFG2_OP_MODE_HNP_SRP_CAPABLE) || | |
1623 | (op_mode == GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE) || | |
1624 | (op_mode == GHWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE); | |
1625 | } | |
1626 | ||
1627 | /* Returns true if the controller is host-only. */ | |
1628 | bool dwc2_hw_is_host(struct dwc2_hsotg *hsotg) | |
1629 | { | |
1630 | unsigned op_mode = dwc2_op_mode(hsotg); | |
1631 | ||
1632 | return (op_mode == GHWCFG2_OP_MODE_SRP_CAPABLE_HOST) || | |
1633 | (op_mode == GHWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST); | |
1634 | } | |
1635 | ||
1636 | /* Returns true if the controller is device-only. */ | |
1637 | bool dwc2_hw_is_device(struct dwc2_hsotg *hsotg) | |
1638 | { | |
1639 | unsigned op_mode = dwc2_op_mode(hsotg); | |
1640 | ||
1641 | return (op_mode == GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) || | |
1642 | (op_mode == GHWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE); | |
1643 | } | |
1644 | ||
56f5b1cf PZ |
1645 | MODULE_DESCRIPTION("DESIGNWARE HS OTG Core"); |
1646 | MODULE_AUTHOR("Synopsys, Inc."); | |
1647 | MODULE_LICENSE("Dual BSD/GPL"); |