Commit | Line | Data |
---|---|---|
db11e47d SS |
1 | /* |
2 | * Glue code for the ISP1760 driver and bus | |
3 | * Currently there is support for | |
4 | * - OpenFirmware | |
5 | * - PCI | |
9da69c60 | 6 | * - PDEV (generic platform device centralized driver model) |
db11e47d SS |
7 | * |
8 | * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de> | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/usb.h> | |
13 | #include <linux/io.h> | |
f7e7aa58 | 14 | #include <linux/platform_device.h> |
9da69c60 | 15 | #include <linux/usb/isp1760.h> |
27729aad | 16 | #include <linux/usb/hcd.h> |
db11e47d | 17 | |
db11e47d SS |
18 | #include "isp1760-hcd.h" |
19 | ||
ff30bf1c | 20 | #ifdef CONFIG_PPC_OF |
db11e47d SS |
21 | #include <linux/of.h> |
22 | #include <linux/of_platform.h> | |
23 | #endif | |
24 | ||
ff30bf1c | 25 | #ifdef CONFIG_PCI |
db11e47d SS |
26 | #include <linux/pci.h> |
27 | #endif | |
28 | ||
ff30bf1c | 29 | #ifdef CONFIG_PPC_OF |
2dc11581 | 30 | static int of_isp1760_probe(struct platform_device *dev, |
db11e47d SS |
31 | const struct of_device_id *match) |
32 | { | |
33 | struct usb_hcd *hcd; | |
61c7a080 | 34 | struct device_node *dp = dev->dev.of_node; |
db11e47d SS |
35 | struct resource *res; |
36 | struct resource memory; | |
37 | struct of_irq oirq; | |
38 | int virq; | |
e07afd3f | 39 | resource_size_t res_len; |
db11e47d | 40 | int ret; |
3faefc88 NC |
41 | const unsigned int *prop; |
42 | unsigned int devflags = 0; | |
db11e47d SS |
43 | |
44 | ret = of_address_to_resource(dp, 0, &memory); | |
45 | if (ret) | |
46 | return -ENXIO; | |
47 | ||
e07afd3f TK |
48 | res_len = resource_size(&memory); |
49 | ||
50 | res = request_mem_region(memory.start, res_len, dev_name(&dev->dev)); | |
db11e47d SS |
51 | if (!res) |
52 | return -EBUSY; | |
53 | ||
db11e47d SS |
54 | if (of_irq_map_one(dp, 0, &oirq)) { |
55 | ret = -ENODEV; | |
56 | goto release_reg; | |
57 | } | |
58 | ||
59 | virq = irq_create_of_mapping(oirq.controller, oirq.specifier, | |
60 | oirq.size); | |
61 | ||
3faefc88 NC |
62 | if (of_device_is_compatible(dp, "nxp,usb-isp1761")) |
63 | devflags |= ISP1760_FLAG_ISP1761; | |
64 | ||
3faefc88 NC |
65 | /* Some systems wire up only 16 of the 32 data lines */ |
66 | prop = of_get_property(dp, "bus-width", NULL); | |
67 | if (prop && *prop == 16) | |
68 | devflags |= ISP1760_FLAG_BUS_WIDTH_16; | |
69 | ||
70 | if (of_get_property(dp, "port1-otg", NULL) != NULL) | |
71 | devflags |= ISP1760_FLAG_OTG_EN; | |
72 | ||
73 | if (of_get_property(dp, "analog-oc", NULL) != NULL) | |
74 | devflags |= ISP1760_FLAG_ANALOG_OC; | |
75 | ||
76 | if (of_get_property(dp, "dack-polarity", NULL) != NULL) | |
77 | devflags |= ISP1760_FLAG_DACK_POL_HIGH; | |
78 | ||
79 | if (of_get_property(dp, "dreq-polarity", NULL) != NULL) | |
80 | devflags |= ISP1760_FLAG_DREQ_POL_HIGH; | |
81 | ||
db11e47d | 82 | hcd = isp1760_register(memory.start, res_len, virq, |
3faefc88 NC |
83 | IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), |
84 | devflags); | |
db11e47d SS |
85 | if (IS_ERR(hcd)) { |
86 | ret = PTR_ERR(hcd); | |
87 | goto release_reg; | |
88 | } | |
89 | ||
90 | dev_set_drvdata(&dev->dev, hcd); | |
91 | return ret; | |
92 | ||
93 | release_reg: | |
e07afd3f | 94 | release_mem_region(memory.start, res_len); |
db11e47d SS |
95 | return ret; |
96 | } | |
97 | ||
2dc11581 | 98 | static int of_isp1760_remove(struct platform_device *dev) |
db11e47d SS |
99 | { |
100 | struct usb_hcd *hcd = dev_get_drvdata(&dev->dev); | |
101 | ||
102 | dev_set_drvdata(&dev->dev, NULL); | |
103 | ||
104 | usb_remove_hcd(hcd); | |
105 | iounmap(hcd->regs); | |
106 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
107 | usb_put_hcd(hcd); | |
108 | return 0; | |
109 | } | |
110 | ||
c4386ad0 | 111 | static const struct of_device_id of_isp1760_match[] = { |
db11e47d SS |
112 | { |
113 | .compatible = "nxp,usb-isp1760", | |
114 | }, | |
3faefc88 NC |
115 | { |
116 | .compatible = "nxp,usb-isp1761", | |
117 | }, | |
db11e47d SS |
118 | { }, |
119 | }; | |
120 | MODULE_DEVICE_TABLE(of, of_isp1760_match); | |
121 | ||
122 | static struct of_platform_driver isp1760_of_driver = { | |
4018294b GL |
123 | .driver = { |
124 | .name = "nxp-isp1760", | |
125 | .owner = THIS_MODULE, | |
126 | .of_match_table = of_isp1760_match, | |
127 | }, | |
db11e47d SS |
128 | .probe = of_isp1760_probe, |
129 | .remove = of_isp1760_remove, | |
130 | }; | |
131 | #endif | |
132 | ||
ff30bf1c | 133 | #ifdef CONFIG_PCI |
db11e47d SS |
134 | static int __devinit isp1761_pci_probe(struct pci_dev *dev, |
135 | const struct pci_device_id *id) | |
136 | { | |
137 | u8 latency, limit; | |
138 | __u32 reg_data; | |
139 | int retry_count; | |
db11e47d | 140 | struct usb_hcd *hcd; |
3faefc88 | 141 | unsigned int devflags = 0; |
6013bbba KB |
142 | int ret_status = 0; |
143 | ||
144 | resource_size_t pci_mem_phy0; | |
145 | resource_size_t memlength; | |
146 | ||
147 | u8 __iomem *chip_addr; | |
148 | u8 __iomem *iobase; | |
149 | resource_size_t nxp_pci_io_base; | |
150 | resource_size_t iolength; | |
db11e47d SS |
151 | |
152 | if (usb_disabled()) | |
153 | return -ENODEV; | |
154 | ||
155 | if (pci_enable_device(dev) < 0) | |
156 | return -ENODEV; | |
157 | ||
158 | if (!dev->irq) | |
159 | return -ENODEV; | |
160 | ||
161 | /* Grab the PLX PCI mem maped port start address we need */ | |
162 | nxp_pci_io_base = pci_resource_start(dev, 0); | |
163 | iolength = pci_resource_len(dev, 0); | |
164 | ||
165 | if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) { | |
166 | printk(KERN_ERR "request region #1\n"); | |
167 | return -EBUSY; | |
168 | } | |
169 | ||
170 | iobase = ioremap_nocache(nxp_pci_io_base, iolength); | |
171 | if (!iobase) { | |
172 | printk(KERN_ERR "ioremap #1\n"); | |
6013bbba KB |
173 | ret_status = -ENOMEM; |
174 | goto cleanup1; | |
db11e47d SS |
175 | } |
176 | /* Grab the PLX PCI shared memory of the ISP 1761 we need */ | |
177 | pci_mem_phy0 = pci_resource_start(dev, 3); | |
6013bbba KB |
178 | memlength = pci_resource_len(dev, 3); |
179 | if (memlength < 0xffff) { | |
180 | printk(KERN_ERR "memory length for this resource is wrong\n"); | |
181 | ret_status = -ENOMEM; | |
182 | goto cleanup2; | |
db11e47d SS |
183 | } |
184 | ||
6013bbba | 185 | if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) { |
db11e47d | 186 | printk(KERN_ERR "host controller already in use\n"); |
6013bbba KB |
187 | ret_status = -EBUSY; |
188 | goto cleanup2; | |
189 | } | |
190 | ||
191 | /* map available memory */ | |
192 | chip_addr = ioremap_nocache(pci_mem_phy0,memlength); | |
193 | if (!chip_addr) { | |
194 | printk(KERN_ERR "Error ioremap failed\n"); | |
195 | ret_status = -ENOMEM; | |
196 | goto cleanup3; | |
db11e47d SS |
197 | } |
198 | ||
199 | /* bad pci latencies can contribute to overruns */ | |
200 | pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency); | |
201 | if (latency) { | |
202 | pci_read_config_byte(dev, PCI_MAX_LAT, &limit); | |
203 | if (limit && limit < latency) | |
204 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit); | |
205 | } | |
206 | ||
207 | /* Try to check whether we can access Scratch Register of | |
208 | * Host Controller or not. The initial PCI access is retried until | |
209 | * local init for the PCI bridge is completed | |
210 | */ | |
211 | retry_count = 20; | |
212 | reg_data = 0; | |
213 | while ((reg_data != 0xFACE) && retry_count) { | |
214 | /*by default host is in 16bit mode, so | |
215 | * io operations at this stage must be 16 bit | |
216 | * */ | |
217 | writel(0xface, chip_addr + HC_SCRATCH_REG); | |
218 | udelay(100); | |
6013bbba | 219 | reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff; |
db11e47d SS |
220 | retry_count--; |
221 | } | |
222 | ||
6013bbba KB |
223 | iounmap(chip_addr); |
224 | ||
db11e47d SS |
225 | /* Host Controller presence is detected by writing to scratch register |
226 | * and reading back and checking the contents are same or not | |
227 | */ | |
228 | if (reg_data != 0xFACE) { | |
802f389a | 229 | dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data); |
6013bbba KB |
230 | ret_status = -ENOMEM; |
231 | goto cleanup3; | |
db11e47d SS |
232 | } |
233 | ||
234 | pci_set_master(dev); | |
235 | ||
6013bbba KB |
236 | /* configure PLX PCI chip to pass interrupts */ |
237 | #define PLX_INT_CSR_REG 0x68 | |
238 | reg_data = readl(iobase + PLX_INT_CSR_REG); | |
239 | reg_data |= 0x900; | |
240 | writel(reg_data, iobase + PLX_INT_CSR_REG); | |
db11e47d SS |
241 | |
242 | dev->dev.dma_mask = NULL; | |
6013bbba | 243 | hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq, |
3faefc88 NC |
244 | IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), |
245 | devflags); | |
6013bbba KB |
246 | if (IS_ERR(hcd)) { |
247 | ret_status = -ENODEV; | |
248 | goto cleanup3; | |
ce5dee50 | 249 | } |
6013bbba KB |
250 | |
251 | /* done with PLX IO access */ | |
db11e47d | 252 | iounmap(iobase); |
db11e47d | 253 | release_mem_region(nxp_pci_io_base, iolength); |
6013bbba KB |
254 | |
255 | pci_set_drvdata(dev, hcd); | |
256 | return 0; | |
257 | ||
258 | cleanup3: | |
259 | release_mem_region(pci_mem_phy0, memlength); | |
260 | cleanup2: | |
261 | iounmap(iobase); | |
262 | cleanup1: | |
263 | release_mem_region(nxp_pci_io_base, iolength); | |
264 | return ret_status; | |
db11e47d | 265 | } |
6013bbba | 266 | |
db11e47d SS |
267 | static void isp1761_pci_remove(struct pci_dev *dev) |
268 | { | |
269 | struct usb_hcd *hcd; | |
270 | ||
271 | hcd = pci_get_drvdata(dev); | |
272 | ||
273 | usb_remove_hcd(hcd); | |
274 | iounmap(hcd->regs); | |
275 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
276 | usb_put_hcd(hcd); | |
277 | ||
278 | pci_disable_device(dev); | |
db11e47d SS |
279 | } |
280 | ||
281 | static void isp1761_pci_shutdown(struct pci_dev *dev) | |
282 | { | |
283 | printk(KERN_ERR "ips1761_pci_shutdown\n"); | |
284 | } | |
285 | ||
6c073568 SAS |
286 | static const struct pci_device_id isp1760_plx [] = { |
287 | { | |
288 | .class = PCI_CLASS_BRIDGE_OTHER << 8, | |
289 | .class_mask = ~0, | |
290 | .vendor = PCI_VENDOR_ID_PLX, | |
291 | .device = 0x5406, | |
292 | .subvendor = PCI_VENDOR_ID_PLX, | |
293 | .subdevice = 0x9054, | |
294 | }, | |
295 | { } | |
db11e47d SS |
296 | }; |
297 | MODULE_DEVICE_TABLE(pci, isp1760_plx); | |
298 | ||
299 | static struct pci_driver isp1761_pci_driver = { | |
300 | .name = "isp1760", | |
301 | .id_table = isp1760_plx, | |
302 | .probe = isp1761_pci_probe, | |
303 | .remove = isp1761_pci_remove, | |
304 | .shutdown = isp1761_pci_shutdown, | |
305 | }; | |
306 | #endif | |
307 | ||
f7e7aa58 CM |
308 | static int __devinit isp1760_plat_probe(struct platform_device *pdev) |
309 | { | |
310 | int ret = 0; | |
311 | struct usb_hcd *hcd; | |
312 | struct resource *mem_res; | |
313 | struct resource *irq_res; | |
314 | resource_size_t mem_size; | |
9da69c60 MH |
315 | struct isp1760_platform_data *priv = pdev->dev.platform_data; |
316 | unsigned int devflags = 0; | |
f7e7aa58 CM |
317 | unsigned long irqflags = IRQF_SHARED | IRQF_DISABLED; |
318 | ||
319 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
320 | if (!mem_res) { | |
321 | pr_warning("isp1760: Memory resource not available\n"); | |
322 | ret = -ENODEV; | |
323 | goto out; | |
324 | } | |
325 | mem_size = resource_size(mem_res); | |
326 | if (!request_mem_region(mem_res->start, mem_size, "isp1760")) { | |
327 | pr_warning("isp1760: Cannot reserve the memory resource\n"); | |
328 | ret = -EBUSY; | |
329 | goto out; | |
330 | } | |
331 | ||
332 | irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
333 | if (!irq_res) { | |
334 | pr_warning("isp1760: IRQ resource not available\n"); | |
335 | return -ENODEV; | |
336 | } | |
337 | irqflags |= irq_res->flags & IRQF_TRIGGER_MASK; | |
338 | ||
9da69c60 MH |
339 | if (priv) { |
340 | if (priv->is_isp1761) | |
341 | devflags |= ISP1760_FLAG_ISP1761; | |
342 | if (priv->bus_width_16) | |
343 | devflags |= ISP1760_FLAG_BUS_WIDTH_16; | |
344 | if (priv->port1_otg) | |
345 | devflags |= ISP1760_FLAG_OTG_EN; | |
346 | if (priv->analog_oc) | |
347 | devflags |= ISP1760_FLAG_ANALOG_OC; | |
348 | if (priv->dack_polarity_high) | |
349 | devflags |= ISP1760_FLAG_DACK_POL_HIGH; | |
350 | if (priv->dreq_polarity_high) | |
351 | devflags |= ISP1760_FLAG_DREQ_POL_HIGH; | |
352 | } | |
353 | ||
f7e7aa58 | 354 | hcd = isp1760_register(mem_res->start, mem_size, irq_res->start, |
9da69c60 | 355 | irqflags, &pdev->dev, dev_name(&pdev->dev), devflags); |
f7e7aa58 CM |
356 | if (IS_ERR(hcd)) { |
357 | pr_warning("isp1760: Failed to register the HCD device\n"); | |
358 | ret = -ENODEV; | |
359 | goto cleanup; | |
360 | } | |
361 | ||
362 | pr_info("ISP1760 USB device initialised\n"); | |
363 | return ret; | |
364 | ||
365 | cleanup: | |
366 | release_mem_region(mem_res->start, mem_size); | |
367 | out: | |
368 | return ret; | |
369 | } | |
370 | ||
371 | static int __devexit isp1760_plat_remove(struct platform_device *pdev) | |
372 | { | |
373 | struct resource *mem_res; | |
374 | resource_size_t mem_size; | |
375 | ||
376 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
377 | mem_size = resource_size(mem_res); | |
378 | release_mem_region(mem_res->start, mem_size); | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | static struct platform_driver isp1760_plat_driver = { | |
384 | .probe = isp1760_plat_probe, | |
4198e4f7 | 385 | .remove = __devexit_p(isp1760_plat_remove), |
f7e7aa58 CM |
386 | .driver = { |
387 | .name = "isp1760", | |
388 | }, | |
389 | }; | |
390 | ||
db11e47d SS |
391 | static int __init isp1760_init(void) |
392 | { | |
f7e7aa58 | 393 | int ret, any_ret = -ENODEV; |
db11e47d SS |
394 | |
395 | init_kmem_once(); | |
396 | ||
f7e7aa58 CM |
397 | ret = platform_driver_register(&isp1760_plat_driver); |
398 | if (!ret) | |
399 | any_ret = 0; | |
ff30bf1c | 400 | #ifdef CONFIG_PPC_OF |
db11e47d | 401 | ret = of_register_platform_driver(&isp1760_of_driver); |
f7e7aa58 CM |
402 | if (!ret) |
403 | any_ret = 0; | |
db11e47d | 404 | #endif |
ff30bf1c | 405 | #ifdef CONFIG_PCI |
db11e47d | 406 | ret = pci_register_driver(&isp1761_pci_driver); |
f7e7aa58 CM |
407 | if (!ret) |
408 | any_ret = 0; | |
db11e47d | 409 | #endif |
db11e47d | 410 | |
f7e7aa58 CM |
411 | if (any_ret) |
412 | deinit_kmem_cache(); | |
413 | return any_ret; | |
db11e47d SS |
414 | } |
415 | module_init(isp1760_init); | |
416 | ||
417 | static void __exit isp1760_exit(void) | |
418 | { | |
f7e7aa58 | 419 | platform_driver_unregister(&isp1760_plat_driver); |
ff30bf1c | 420 | #ifdef CONFIG_PPC_OF |
db11e47d SS |
421 | of_unregister_platform_driver(&isp1760_of_driver); |
422 | #endif | |
ff30bf1c | 423 | #ifdef CONFIG_PCI |
db11e47d SS |
424 | pci_unregister_driver(&isp1761_pci_driver); |
425 | #endif | |
426 | deinit_kmem_cache(); | |
427 | } | |
428 | module_exit(isp1760_exit); |