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Commit | Line | Data |
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4020f2d7 AD |
1 | /* |
2 | * tifm_7xx1.c - TI FlashMedia driver | |
3 | * | |
4 | * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/tifm.h> | |
13 | #include <linux/dma-mapping.h> | |
7146f0d3 | 14 | #include <linux/freezer.h> |
4020f2d7 AD |
15 | |
16 | #define DRIVER_NAME "tifm_7xx1" | |
4552f0cb AD |
17 | #define DRIVER_VERSION "0.8" |
18 | ||
19 | #define TIFM_IRQ_ENABLE 0x80000000 | |
20 | #define TIFM_IRQ_SOCKMASK(x) (x) | |
21 | #define TIFM_IRQ_CARDMASK(x) ((x) << 8) | |
22 | #define TIFM_IRQ_FIFOMASK(x) ((x) << 16) | |
23 | #define TIFM_IRQ_SETALL 0xffffffff | |
4020f2d7 | 24 | |
6113ed73 AD |
25 | static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm, |
26 | struct tifm_dev *sock) | |
27 | { | |
28 | } | |
29 | ||
4020f2d7 AD |
30 | static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock) |
31 | { | |
4020f2d7 AD |
32 | unsigned long flags; |
33 | ||
34 | spin_lock_irqsave(&fm->lock, flags); | |
7146f0d3 | 35 | fm->socket_change_set |= 1 << sock->socket_id; |
3540af8f | 36 | tifm_queue_work(&fm->media_switcher); |
4020f2d7 AD |
37 | spin_unlock_irqrestore(&fm->lock, flags); |
38 | } | |
39 | ||
7d12e780 | 40 | static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id) |
4020f2d7 AD |
41 | { |
42 | struct tifm_adapter *fm = dev_id; | |
217334d1 | 43 | struct tifm_dev *sock; |
4020f2d7 | 44 | unsigned int irq_status; |
4552f0cb | 45 | unsigned int cnt; |
4020f2d7 AD |
46 | |
47 | spin_lock(&fm->lock); | |
48 | irq_status = readl(fm->addr + FM_INTERRUPT_STATUS); | |
49 | if (irq_status == 0 || irq_status == (~0)) { | |
50 | spin_unlock(&fm->lock); | |
51 | return IRQ_NONE; | |
52 | } | |
53 | ||
54 | if (irq_status & TIFM_IRQ_ENABLE) { | |
55 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
56 | ||
8b40adab | 57 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
217334d1 | 58 | sock = fm->sockets[cnt]; |
4552f0cb AD |
59 | if (sock) { |
60 | if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1)) | |
61 | sock->data_event(sock); | |
62 | if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1)) | |
63 | sock->card_event(sock); | |
64 | } | |
4020f2d7 | 65 | } |
6412d927 | 66 | |
8b40adab AD |
67 | fm->socket_change_set |= irq_status |
68 | & ((1 << fm->num_sockets) - 1); | |
4020f2d7 AD |
69 | } |
70 | writel(irq_status, fm->addr + FM_INTERRUPT_STATUS); | |
71 | ||
3540af8f AD |
72 | if (fm->finish_me) |
73 | complete_all(fm->finish_me); | |
74 | else if (!fm->socket_change_set) | |
7146f0d3 AD |
75 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); |
76 | else | |
3540af8f | 77 | tifm_queue_work(&fm->media_switcher); |
4020f2d7 AD |
78 | |
79 | spin_unlock(&fm->lock); | |
80 | return IRQ_HANDLED; | |
81 | } | |
82 | ||
342c0ec4 | 83 | static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr) |
4020f2d7 AD |
84 | { |
85 | unsigned int s_state; | |
86 | int cnt; | |
87 | ||
88 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
89 | ||
342c0ec4 | 90 | for (cnt = 16; cnt <= 256; cnt <<= 1) { |
8b40adab AD |
91 | if (!(TIFM_SOCK_STATE_POWERED |
92 | & readl(sock_addr + SOCK_PRESENT_STATE))) | |
4020f2d7 | 93 | break; |
342c0ec4 AD |
94 | |
95 | msleep(cnt); | |
4020f2d7 AD |
96 | } |
97 | ||
98 | s_state = readl(sock_addr + SOCK_PRESENT_STATE); | |
99 | if (!(TIFM_SOCK_STATE_OCCUPIED & s_state)) | |
e23f2b8a | 100 | return 0; |
4020f2d7 | 101 | |
342c0ec4 AD |
102 | writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED, |
103 | sock_addr + SOCK_CONTROL); | |
4020f2d7 | 104 | |
342c0ec4 AD |
105 | /* xd needs some extra time before power on */ |
106 | if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) | |
107 | == TIFM_TYPE_XD) | |
108 | msleep(40); | |
109 | ||
110 | writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL); | |
111 | /* wait for power to stabilize */ | |
112 | msleep(20); | |
113 | for (cnt = 16; cnt <= 256; cnt <<= 1) { | |
8b40adab AD |
114 | if ((TIFM_SOCK_STATE_POWERED |
115 | & readl(sock_addr + SOCK_PRESENT_STATE))) | |
4020f2d7 | 116 | break; |
342c0ec4 AD |
117 | |
118 | msleep(cnt); | |
4020f2d7 AD |
119 | } |
120 | ||
342c0ec4 AD |
121 | writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED), |
122 | sock_addr + SOCK_CONTROL); | |
4020f2d7 AD |
123 | |
124 | return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7; | |
125 | } | |
126 | ||
e069d79d AV |
127 | inline static char __iomem * |
128 | tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num) | |
4020f2d7 AD |
129 | { |
130 | return base_addr + ((sock_num + 1) << 10); | |
131 | } | |
132 | ||
3540af8f | 133 | static void tifm_7xx1_switch_media(struct work_struct *work) |
4020f2d7 | 134 | { |
3540af8f AD |
135 | struct tifm_adapter *fm = container_of(work, struct tifm_adapter, |
136 | media_switcher); | |
4020f2d7 | 137 | unsigned long flags; |
e23f2b8a | 138 | unsigned char media_id; |
4020f2d7 | 139 | char *card_name = "xx"; |
3540af8f | 140 | int cnt; |
6412d927 AD |
141 | struct tifm_dev *sock; |
142 | unsigned int socket_change_set; | |
4020f2d7 | 143 | |
3540af8f AD |
144 | spin_lock_irqsave(&fm->lock, flags); |
145 | socket_change_set = fm->socket_change_set; | |
146 | fm->socket_change_set = 0; | |
6412d927 | 147 | |
6113ed73 | 148 | dev_dbg(fm->cdev.dev, "checking media set %x\n", |
3540af8f | 149 | socket_change_set); |
6412d927 | 150 | |
3540af8f | 151 | if (!socket_change_set) { |
4020f2d7 | 152 | spin_unlock_irqrestore(&fm->lock, flags); |
3540af8f AD |
153 | return; |
154 | } | |
4020f2d7 | 155 | |
6412d927 AD |
156 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
157 | if (!(socket_change_set & (1 << cnt))) | |
158 | continue; | |
159 | sock = fm->sockets[cnt]; | |
160 | if (sock) { | |
4020f2d7 | 161 | printk(KERN_INFO DRIVER_NAME |
6412d927 AD |
162 | ": demand removing card from socket %d\n", |
163 | cnt); | |
164 | fm->sockets[cnt] = NULL; | |
165 | spin_unlock_irqrestore(&fm->lock, flags); | |
166 | device_unregister(&sock->dev); | |
4020f2d7 | 167 | spin_lock_irqsave(&fm->lock, flags); |
6412d927 AD |
168 | writel(0x0e00, |
169 | tifm_7xx1_sock_addr(fm->addr, cnt) | |
170 | + SOCK_CONTROL); | |
171 | } | |
6412d927 AD |
172 | |
173 | spin_unlock_irqrestore(&fm->lock, flags); | |
174 | media_id = tifm_7xx1_toggle_sock_power( | |
342c0ec4 | 175 | tifm_7xx1_sock_addr(fm->addr, cnt)); |
6412d927 AD |
176 | if (media_id) { |
177 | sock = tifm_alloc_device(fm); | |
178 | if (sock) { | |
179 | sock->addr = tifm_7xx1_sock_addr(fm->addr, | |
8b40adab | 180 | cnt); |
e23f2b8a | 181 | sock->type = media_id; |
6412d927 AD |
182 | sock->socket_id = cnt; |
183 | switch (media_id) { | |
184 | case 1: | |
185 | card_name = "xd"; | |
186 | break; | |
187 | case 2: | |
188 | card_name = "ms"; | |
189 | break; | |
190 | case 3: | |
191 | card_name = "sd"; | |
192 | break; | |
193 | default: | |
194 | tifm_free_device(&sock->dev); | |
195 | spin_lock_irqsave(&fm->lock, flags); | |
196 | continue; | |
197 | } | |
198 | snprintf(sock->dev.bus_id, BUS_ID_SIZE, | |
8b40adab AD |
199 | "tifm_%s%u:%u", card_name, |
200 | fm->id, cnt); | |
6412d927 | 201 | printk(KERN_INFO DRIVER_NAME |
8b40adab AD |
202 | ": %s card detected in socket %d\n", |
203 | card_name, cnt); | |
6412d927 AD |
204 | if (!device_register(&sock->dev)) { |
205 | spin_lock_irqsave(&fm->lock, flags); | |
206 | if (!fm->sockets[cnt]) { | |
207 | fm->sockets[cnt] = sock; | |
208 | sock = NULL; | |
209 | } | |
210 | spin_unlock_irqrestore(&fm->lock, flags); | |
211 | } | |
212 | if (sock) | |
213 | tifm_free_device(&sock->dev); | |
4020f2d7 | 214 | } |
6412d927 AD |
215 | spin_lock_irqsave(&fm->lock, flags); |
216 | } | |
217 | } | |
218 | ||
3540af8f AD |
219 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) |
220 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
221 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
222 | ||
223 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) | |
224 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
225 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
226 | ||
227 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); | |
228 | spin_unlock_irqrestore(&fm->lock, flags); | |
4020f2d7 AD |
229 | } |
230 | ||
7146f0d3 AD |
231 | #ifdef CONFIG_PM |
232 | ||
4020f2d7 AD |
233 | static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state) |
234 | { | |
7146f0d3 | 235 | dev_dbg(&dev->dev, "suspending host\n"); |
4020f2d7 | 236 | |
7146f0d3 AD |
237 | pci_save_state(dev); |
238 | pci_enable_wake(dev, pci_choose_state(dev, state), 0); | |
239 | pci_disable_device(dev); | |
240 | pci_set_power_state(dev, pci_choose_state(dev, state)); | |
4020f2d7 AD |
241 | return 0; |
242 | } | |
243 | ||
244 | static int tifm_7xx1_resume(struct pci_dev *dev) | |
245 | { | |
246 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
7146f0d3 | 247 | int cnt, rc; |
4020f2d7 | 248 | unsigned long flags; |
e23f2b8a | 249 | unsigned char new_ids[fm->num_sockets]; |
3540af8f | 250 | DECLARE_COMPLETION_ONSTACK(finish_resume); |
4020f2d7 | 251 | |
7146f0d3 | 252 | pci_set_power_state(dev, PCI_D0); |
4020f2d7 | 253 | pci_restore_state(dev); |
7146f0d3 AD |
254 | rc = pci_enable_device(dev); |
255 | if (rc) | |
256 | return rc; | |
257 | pci_set_master(dev); | |
258 | ||
259 | dev_dbg(&dev->dev, "resuming host\n"); | |
4020f2d7 | 260 | |
7146f0d3 AD |
261 | for (cnt = 0; cnt < fm->num_sockets; cnt++) |
262 | new_ids[cnt] = tifm_7xx1_toggle_sock_power( | |
342c0ec4 | 263 | tifm_7xx1_sock_addr(fm->addr, cnt)); |
4020f2d7 | 264 | spin_lock_irqsave(&fm->lock, flags); |
7146f0d3 AD |
265 | fm->socket_change_set = 0; |
266 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { | |
267 | if (fm->sockets[cnt]) { | |
e23f2b8a | 268 | if (fm->sockets[cnt]->type == new_ids[cnt]) |
7146f0d3 AD |
269 | fm->socket_change_set |= 1 << cnt; |
270 | ||
e23f2b8a | 271 | fm->sockets[cnt]->type = new_ids[cnt]; |
7146f0d3 AD |
272 | } |
273 | } | |
274 | ||
6412d927 | 275 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
7146f0d3 AD |
276 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
277 | if (!fm->socket_change_set) { | |
278 | spin_unlock_irqrestore(&fm->lock, flags); | |
279 | return 0; | |
280 | } else { | |
281 | fm->socket_change_set = 0; | |
3540af8f | 282 | fm->finish_me = &finish_resume; |
7146f0d3 AD |
283 | spin_unlock_irqrestore(&fm->lock, flags); |
284 | } | |
285 | ||
3540af8f | 286 | wait_for_completion_timeout(&finish_resume, HZ); |
7146f0d3 AD |
287 | |
288 | spin_lock_irqsave(&fm->lock, flags); | |
3540af8f | 289 | fm->finish_me = NULL; |
7146f0d3 AD |
290 | writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set) |
291 | | TIFM_IRQ_CARDMASK(fm->socket_change_set), | |
292 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
293 | writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set) | |
294 | | TIFM_IRQ_CARDMASK(fm->socket_change_set), | |
295 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
296 | writel(TIFM_IRQ_ENABLE, | |
297 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
298 | fm->socket_change_set = 0; | |
299 | ||
4020f2d7 AD |
300 | spin_unlock_irqrestore(&fm->lock, flags); |
301 | return 0; | |
302 | } | |
303 | ||
7146f0d3 AD |
304 | #else |
305 | ||
306 | #define tifm_7xx1_suspend NULL | |
307 | #define tifm_7xx1_resume NULL | |
308 | ||
309 | #endif /* CONFIG_PM */ | |
310 | ||
4020f2d7 | 311 | static int tifm_7xx1_probe(struct pci_dev *dev, |
8b40adab | 312 | const struct pci_device_id *dev_id) |
4020f2d7 AD |
313 | { |
314 | struct tifm_adapter *fm; | |
315 | int pci_dev_busy = 0; | |
316 | int rc; | |
317 | ||
318 | rc = pci_set_dma_mask(dev, DMA_32BIT_MASK); | |
319 | if (rc) | |
320 | return rc; | |
321 | ||
322 | rc = pci_enable_device(dev); | |
323 | if (rc) | |
324 | return rc; | |
325 | ||
326 | pci_set_master(dev); | |
327 | ||
328 | rc = pci_request_regions(dev, DRIVER_NAME); | |
329 | if (rc) { | |
330 | pci_dev_busy = 1; | |
331 | goto err_out; | |
332 | } | |
333 | ||
334 | pci_intx(dev, 1); | |
335 | ||
6113ed73 AD |
336 | fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM |
337 | ? 4 : 2, &dev->dev); | |
4020f2d7 AD |
338 | if (!fm) { |
339 | rc = -ENOMEM; | |
340 | goto err_out_int; | |
341 | } | |
342 | ||
3540af8f | 343 | INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media); |
4020f2d7 AD |
344 | fm->eject = tifm_7xx1_eject; |
345 | pci_set_drvdata(dev, fm); | |
346 | ||
347 | fm->addr = ioremap(pci_resource_start(dev, 0), | |
8b40adab | 348 | pci_resource_len(dev, 0)); |
4020f2d7 AD |
349 | if (!fm->addr) |
350 | goto err_out_free; | |
351 | ||
6113ed73 | 352 | rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm); |
4020f2d7 AD |
353 | if (rc) |
354 | goto err_out_unmap; | |
355 | ||
3540af8f | 356 | rc = tifm_add_adapter(fm); |
4020f2d7 AD |
357 | if (rc) |
358 | goto err_out_irq; | |
359 | ||
6412d927 | 360 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
8b40adab | 361 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
4020f2d7 AD |
362 | return 0; |
363 | ||
364 | err_out_irq: | |
365 | free_irq(dev->irq, fm); | |
366 | err_out_unmap: | |
367 | iounmap(fm->addr); | |
368 | err_out_free: | |
369 | pci_set_drvdata(dev, NULL); | |
370 | tifm_free_adapter(fm); | |
371 | err_out_int: | |
372 | pci_intx(dev, 0); | |
373 | pci_release_regions(dev); | |
374 | err_out: | |
375 | if (!pci_dev_busy) | |
376 | pci_disable_device(dev); | |
377 | return rc; | |
378 | } | |
379 | ||
380 | static void tifm_7xx1_remove(struct pci_dev *dev) | |
381 | { | |
382 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
4020f2d7 | 383 | |
6113ed73 | 384 | fm->eject = tifm_7xx1_dummy_eject; |
7146f0d3 AD |
385 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); |
386 | mmiowb(); | |
387 | free_irq(dev->irq, fm); | |
388 | ||
4020f2d7 AD |
389 | tifm_remove_adapter(fm); |
390 | ||
e069d79d | 391 | pci_set_drvdata(dev, NULL); |
4020f2d7 AD |
392 | |
393 | iounmap(fm->addr); | |
394 | pci_intx(dev, 0); | |
395 | pci_release_regions(dev); | |
396 | ||
397 | pci_disable_device(dev); | |
398 | tifm_free_adapter(fm); | |
399 | } | |
400 | ||
401 | static struct pci_device_id tifm_7xx1_pci_tbl [] = { | |
b5ad6761 AD |
402 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID, |
403 | PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */ | |
404 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID, | |
405 | PCI_ANY_ID, 0, 0, 0 }, | |
406 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID, | |
407 | PCI_ANY_ID, 0, 0, 0 }, | |
4020f2d7 AD |
408 | { } |
409 | }; | |
410 | ||
411 | static struct pci_driver tifm_7xx1_driver = { | |
412 | .name = DRIVER_NAME, | |
413 | .id_table = tifm_7xx1_pci_tbl, | |
414 | .probe = tifm_7xx1_probe, | |
415 | .remove = tifm_7xx1_remove, | |
416 | .suspend = tifm_7xx1_suspend, | |
417 | .resume = tifm_7xx1_resume, | |
418 | }; | |
419 | ||
420 | static int __init tifm_7xx1_init(void) | |
421 | { | |
422 | return pci_register_driver(&tifm_7xx1_driver); | |
423 | } | |
424 | ||
425 | static void __exit tifm_7xx1_exit(void) | |
426 | { | |
427 | pci_unregister_driver(&tifm_7xx1_driver); | |
428 | } | |
429 | ||
430 | MODULE_AUTHOR("Alex Dubov"); | |
431 | MODULE_DESCRIPTION("TI FlashMedia host driver"); | |
432 | MODULE_LICENSE("GPL"); | |
433 | MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl); | |
434 | MODULE_VERSION(DRIVER_VERSION); | |
435 | ||
436 | module_init(tifm_7xx1_init); | |
437 | module_exit(tifm_7xx1_exit); |