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 |
db11e47d SS |
30 | static int of_isp1760_probe(struct of_device *dev, |
31 | const struct of_device_id *match) | |
32 | { | |
33 | struct usb_hcd *hcd; | |
34 | struct device_node *dp = dev->node; | |
35 | struct resource *res; | |
36 | struct resource memory; | |
37 | struct of_irq oirq; | |
38 | int virq; | |
39 | u64 res_len; | |
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 | ||
48 | res = request_mem_region(memory.start, memory.end - memory.start + 1, | |
7071a3ce | 49 | dev_name(&dev->dev)); |
db11e47d SS |
50 | if (!res) |
51 | return -EBUSY; | |
52 | ||
53 | res_len = memory.end - memory.start + 1; | |
54 | ||
55 | if (of_irq_map_one(dp, 0, &oirq)) { | |
56 | ret = -ENODEV; | |
57 | goto release_reg; | |
58 | } | |
59 | ||
60 | virq = irq_create_of_mapping(oirq.controller, oirq.specifier, | |
61 | oirq.size); | |
62 | ||
3faefc88 NC |
63 | if (of_device_is_compatible(dp, "nxp,usb-isp1761")) |
64 | devflags |= ISP1760_FLAG_ISP1761; | |
65 | ||
3faefc88 NC |
66 | /* Some systems wire up only 16 of the 32 data lines */ |
67 | prop = of_get_property(dp, "bus-width", NULL); | |
68 | if (prop && *prop == 16) | |
69 | devflags |= ISP1760_FLAG_BUS_WIDTH_16; | |
70 | ||
71 | if (of_get_property(dp, "port1-otg", NULL) != NULL) | |
72 | devflags |= ISP1760_FLAG_OTG_EN; | |
73 | ||
74 | if (of_get_property(dp, "analog-oc", NULL) != NULL) | |
75 | devflags |= ISP1760_FLAG_ANALOG_OC; | |
76 | ||
77 | if (of_get_property(dp, "dack-polarity", NULL) != NULL) | |
78 | devflags |= ISP1760_FLAG_DACK_POL_HIGH; | |
79 | ||
80 | if (of_get_property(dp, "dreq-polarity", NULL) != NULL) | |
81 | devflags |= ISP1760_FLAG_DREQ_POL_HIGH; | |
82 | ||
db11e47d | 83 | hcd = isp1760_register(memory.start, res_len, virq, |
3faefc88 NC |
84 | IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), |
85 | devflags); | |
db11e47d SS |
86 | if (IS_ERR(hcd)) { |
87 | ret = PTR_ERR(hcd); | |
88 | goto release_reg; | |
89 | } | |
90 | ||
91 | dev_set_drvdata(&dev->dev, hcd); | |
92 | return ret; | |
93 | ||
94 | release_reg: | |
95 | release_mem_region(memory.start, memory.end - memory.start + 1); | |
96 | return ret; | |
97 | } | |
98 | ||
99 | static int of_isp1760_remove(struct of_device *dev) | |
100 | { | |
101 | struct usb_hcd *hcd = dev_get_drvdata(&dev->dev); | |
102 | ||
103 | dev_set_drvdata(&dev->dev, NULL); | |
104 | ||
105 | usb_remove_hcd(hcd); | |
106 | iounmap(hcd->regs); | |
107 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
108 | usb_put_hcd(hcd); | |
109 | return 0; | |
110 | } | |
111 | ||
c4386ad0 | 112 | static const struct of_device_id of_isp1760_match[] = { |
db11e47d SS |
113 | { |
114 | .compatible = "nxp,usb-isp1760", | |
115 | }, | |
3faefc88 NC |
116 | { |
117 | .compatible = "nxp,usb-isp1761", | |
118 | }, | |
db11e47d SS |
119 | { }, |
120 | }; | |
121 | MODULE_DEVICE_TABLE(of, of_isp1760_match); | |
122 | ||
123 | static struct of_platform_driver isp1760_of_driver = { | |
124 | .name = "nxp-isp1760", | |
125 | .match_table = of_isp1760_match, | |
126 | .probe = of_isp1760_probe, | |
127 | .remove = of_isp1760_remove, | |
128 | }; | |
129 | #endif | |
130 | ||
ff30bf1c | 131 | #ifdef CONFIG_PCI |
db11e47d SS |
132 | static int __devinit isp1761_pci_probe(struct pci_dev *dev, |
133 | const struct pci_device_id *id) | |
134 | { | |
135 | u8 latency, limit; | |
136 | __u32 reg_data; | |
137 | int retry_count; | |
db11e47d | 138 | struct usb_hcd *hcd; |
3faefc88 | 139 | unsigned int devflags = 0; |
6013bbba KB |
140 | int ret_status = 0; |
141 | ||
142 | resource_size_t pci_mem_phy0; | |
143 | resource_size_t memlength; | |
144 | ||
145 | u8 __iomem *chip_addr; | |
146 | u8 __iomem *iobase; | |
147 | resource_size_t nxp_pci_io_base; | |
148 | resource_size_t iolength; | |
db11e47d SS |
149 | |
150 | if (usb_disabled()) | |
151 | return -ENODEV; | |
152 | ||
153 | if (pci_enable_device(dev) < 0) | |
154 | return -ENODEV; | |
155 | ||
156 | if (!dev->irq) | |
157 | return -ENODEV; | |
158 | ||
159 | /* Grab the PLX PCI mem maped port start address we need */ | |
160 | nxp_pci_io_base = pci_resource_start(dev, 0); | |
161 | iolength = pci_resource_len(dev, 0); | |
162 | ||
163 | if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) { | |
164 | printk(KERN_ERR "request region #1\n"); | |
165 | return -EBUSY; | |
166 | } | |
167 | ||
168 | iobase = ioremap_nocache(nxp_pci_io_base, iolength); | |
169 | if (!iobase) { | |
170 | printk(KERN_ERR "ioremap #1\n"); | |
6013bbba KB |
171 | ret_status = -ENOMEM; |
172 | goto cleanup1; | |
db11e47d SS |
173 | } |
174 | /* Grab the PLX PCI shared memory of the ISP 1761 we need */ | |
175 | pci_mem_phy0 = pci_resource_start(dev, 3); | |
6013bbba KB |
176 | memlength = pci_resource_len(dev, 3); |
177 | if (memlength < 0xffff) { | |
178 | printk(KERN_ERR "memory length for this resource is wrong\n"); | |
179 | ret_status = -ENOMEM; | |
180 | goto cleanup2; | |
db11e47d SS |
181 | } |
182 | ||
6013bbba | 183 | if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) { |
db11e47d | 184 | printk(KERN_ERR "host controller already in use\n"); |
6013bbba KB |
185 | ret_status = -EBUSY; |
186 | goto cleanup2; | |
187 | } | |
188 | ||
189 | /* map available memory */ | |
190 | chip_addr = ioremap_nocache(pci_mem_phy0,memlength); | |
191 | if (!chip_addr) { | |
192 | printk(KERN_ERR "Error ioremap failed\n"); | |
193 | ret_status = -ENOMEM; | |
194 | goto cleanup3; | |
db11e47d SS |
195 | } |
196 | ||
197 | /* bad pci latencies can contribute to overruns */ | |
198 | pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency); | |
199 | if (latency) { | |
200 | pci_read_config_byte(dev, PCI_MAX_LAT, &limit); | |
201 | if (limit && limit < latency) | |
202 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit); | |
203 | } | |
204 | ||
205 | /* Try to check whether we can access Scratch Register of | |
206 | * Host Controller or not. The initial PCI access is retried until | |
207 | * local init for the PCI bridge is completed | |
208 | */ | |
209 | retry_count = 20; | |
210 | reg_data = 0; | |
211 | while ((reg_data != 0xFACE) && retry_count) { | |
212 | /*by default host is in 16bit mode, so | |
213 | * io operations at this stage must be 16 bit | |
214 | * */ | |
215 | writel(0xface, chip_addr + HC_SCRATCH_REG); | |
216 | udelay(100); | |
6013bbba | 217 | reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff; |
db11e47d SS |
218 | retry_count--; |
219 | } | |
220 | ||
6013bbba KB |
221 | iounmap(chip_addr); |
222 | ||
db11e47d SS |
223 | /* Host Controller presence is detected by writing to scratch register |
224 | * and reading back and checking the contents are same or not | |
225 | */ | |
226 | if (reg_data != 0xFACE) { | |
802f389a | 227 | dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data); |
6013bbba KB |
228 | ret_status = -ENOMEM; |
229 | goto cleanup3; | |
db11e47d SS |
230 | } |
231 | ||
232 | pci_set_master(dev); | |
233 | ||
6013bbba KB |
234 | /* configure PLX PCI chip to pass interrupts */ |
235 | #define PLX_INT_CSR_REG 0x68 | |
236 | reg_data = readl(iobase + PLX_INT_CSR_REG); | |
237 | reg_data |= 0x900; | |
238 | writel(reg_data, iobase + PLX_INT_CSR_REG); | |
db11e47d SS |
239 | |
240 | dev->dev.dma_mask = NULL; | |
6013bbba | 241 | hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq, |
3faefc88 NC |
242 | IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), |
243 | devflags); | |
6013bbba KB |
244 | if (IS_ERR(hcd)) { |
245 | ret_status = -ENODEV; | |
246 | goto cleanup3; | |
ce5dee50 | 247 | } |
6013bbba KB |
248 | |
249 | /* done with PLX IO access */ | |
db11e47d | 250 | iounmap(iobase); |
db11e47d | 251 | release_mem_region(nxp_pci_io_base, iolength); |
6013bbba KB |
252 | |
253 | pci_set_drvdata(dev, hcd); | |
254 | return 0; | |
255 | ||
256 | cleanup3: | |
257 | release_mem_region(pci_mem_phy0, memlength); | |
258 | cleanup2: | |
259 | iounmap(iobase); | |
260 | cleanup1: | |
261 | release_mem_region(nxp_pci_io_base, iolength); | |
262 | return ret_status; | |
db11e47d | 263 | } |
6013bbba | 264 | |
db11e47d SS |
265 | static void isp1761_pci_remove(struct pci_dev *dev) |
266 | { | |
267 | struct usb_hcd *hcd; | |
268 | ||
269 | hcd = pci_get_drvdata(dev); | |
270 | ||
271 | usb_remove_hcd(hcd); | |
272 | iounmap(hcd->regs); | |
273 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
274 | usb_put_hcd(hcd); | |
275 | ||
276 | pci_disable_device(dev); | |
db11e47d SS |
277 | } |
278 | ||
279 | static void isp1761_pci_shutdown(struct pci_dev *dev) | |
280 | { | |
281 | printk(KERN_ERR "ips1761_pci_shutdown\n"); | |
282 | } | |
283 | ||
6c073568 SAS |
284 | static const struct pci_device_id isp1760_plx [] = { |
285 | { | |
286 | .class = PCI_CLASS_BRIDGE_OTHER << 8, | |
287 | .class_mask = ~0, | |
288 | .vendor = PCI_VENDOR_ID_PLX, | |
289 | .device = 0x5406, | |
290 | .subvendor = PCI_VENDOR_ID_PLX, | |
291 | .subdevice = 0x9054, | |
292 | }, | |
293 | { } | |
db11e47d SS |
294 | }; |
295 | MODULE_DEVICE_TABLE(pci, isp1760_plx); | |
296 | ||
297 | static struct pci_driver isp1761_pci_driver = { | |
298 | .name = "isp1760", | |
299 | .id_table = isp1760_plx, | |
300 | .probe = isp1761_pci_probe, | |
301 | .remove = isp1761_pci_remove, | |
302 | .shutdown = isp1761_pci_shutdown, | |
303 | }; | |
304 | #endif | |
305 | ||
f7e7aa58 CM |
306 | static int __devinit isp1760_plat_probe(struct platform_device *pdev) |
307 | { | |
308 | int ret = 0; | |
309 | struct usb_hcd *hcd; | |
310 | struct resource *mem_res; | |
311 | struct resource *irq_res; | |
312 | resource_size_t mem_size; | |
9da69c60 MH |
313 | struct isp1760_platform_data *priv = pdev->dev.platform_data; |
314 | unsigned int devflags = 0; | |
f7e7aa58 CM |
315 | unsigned long irqflags = IRQF_SHARED | IRQF_DISABLED; |
316 | ||
317 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
318 | if (!mem_res) { | |
319 | pr_warning("isp1760: Memory resource not available\n"); | |
320 | ret = -ENODEV; | |
321 | goto out; | |
322 | } | |
323 | mem_size = resource_size(mem_res); | |
324 | if (!request_mem_region(mem_res->start, mem_size, "isp1760")) { | |
325 | pr_warning("isp1760: Cannot reserve the memory resource\n"); | |
326 | ret = -EBUSY; | |
327 | goto out; | |
328 | } | |
329 | ||
330 | irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
331 | if (!irq_res) { | |
332 | pr_warning("isp1760: IRQ resource not available\n"); | |
333 | return -ENODEV; | |
334 | } | |
335 | irqflags |= irq_res->flags & IRQF_TRIGGER_MASK; | |
336 | ||
9da69c60 MH |
337 | if (priv) { |
338 | if (priv->is_isp1761) | |
339 | devflags |= ISP1760_FLAG_ISP1761; | |
340 | if (priv->bus_width_16) | |
341 | devflags |= ISP1760_FLAG_BUS_WIDTH_16; | |
342 | if (priv->port1_otg) | |
343 | devflags |= ISP1760_FLAG_OTG_EN; | |
344 | if (priv->analog_oc) | |
345 | devflags |= ISP1760_FLAG_ANALOG_OC; | |
346 | if (priv->dack_polarity_high) | |
347 | devflags |= ISP1760_FLAG_DACK_POL_HIGH; | |
348 | if (priv->dreq_polarity_high) | |
349 | devflags |= ISP1760_FLAG_DREQ_POL_HIGH; | |
350 | } | |
351 | ||
f7e7aa58 | 352 | hcd = isp1760_register(mem_res->start, mem_size, irq_res->start, |
9da69c60 | 353 | irqflags, &pdev->dev, dev_name(&pdev->dev), devflags); |
f7e7aa58 CM |
354 | if (IS_ERR(hcd)) { |
355 | pr_warning("isp1760: Failed to register the HCD device\n"); | |
356 | ret = -ENODEV; | |
357 | goto cleanup; | |
358 | } | |
359 | ||
360 | pr_info("ISP1760 USB device initialised\n"); | |
361 | return ret; | |
362 | ||
363 | cleanup: | |
364 | release_mem_region(mem_res->start, mem_size); | |
365 | out: | |
366 | return ret; | |
367 | } | |
368 | ||
369 | static int __devexit isp1760_plat_remove(struct platform_device *pdev) | |
370 | { | |
371 | struct resource *mem_res; | |
372 | resource_size_t mem_size; | |
373 | ||
374 | mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
375 | mem_size = resource_size(mem_res); | |
376 | release_mem_region(mem_res->start, mem_size); | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | static struct platform_driver isp1760_plat_driver = { | |
382 | .probe = isp1760_plat_probe, | |
4198e4f7 | 383 | .remove = __devexit_p(isp1760_plat_remove), |
f7e7aa58 CM |
384 | .driver = { |
385 | .name = "isp1760", | |
386 | }, | |
387 | }; | |
388 | ||
db11e47d SS |
389 | static int __init isp1760_init(void) |
390 | { | |
f7e7aa58 | 391 | int ret, any_ret = -ENODEV; |
db11e47d SS |
392 | |
393 | init_kmem_once(); | |
394 | ||
f7e7aa58 CM |
395 | ret = platform_driver_register(&isp1760_plat_driver); |
396 | if (!ret) | |
397 | any_ret = 0; | |
ff30bf1c | 398 | #ifdef CONFIG_PPC_OF |
db11e47d | 399 | ret = of_register_platform_driver(&isp1760_of_driver); |
f7e7aa58 CM |
400 | if (!ret) |
401 | any_ret = 0; | |
db11e47d | 402 | #endif |
ff30bf1c | 403 | #ifdef CONFIG_PCI |
db11e47d | 404 | ret = pci_register_driver(&isp1761_pci_driver); |
f7e7aa58 CM |
405 | if (!ret) |
406 | any_ret = 0; | |
db11e47d | 407 | #endif |
db11e47d | 408 | |
f7e7aa58 CM |
409 | if (any_ret) |
410 | deinit_kmem_cache(); | |
411 | return any_ret; | |
db11e47d SS |
412 | } |
413 | module_init(isp1760_init); | |
414 | ||
415 | static void __exit isp1760_exit(void) | |
416 | { | |
f7e7aa58 | 417 | platform_driver_unregister(&isp1760_plat_driver); |
ff30bf1c | 418 | #ifdef CONFIG_PPC_OF |
db11e47d SS |
419 | of_unregister_platform_driver(&isp1760_of_driver); |
420 | #endif | |
ff30bf1c | 421 | #ifdef CONFIG_PCI |
db11e47d SS |
422 | pci_unregister_driver(&isp1761_pci_driver); |
423 | #endif | |
424 | deinit_kmem_cache(); | |
425 | } | |
426 | module_exit(isp1760_exit); |