aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/marvell-ccic/cafe-driver.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/marvell-ccic/cafe-driver.c')
-rw-r--r--drivers/media/video/marvell-ccic/cafe-driver.c654
1 files changed, 0 insertions, 654 deletions
diff --git a/drivers/media/video/marvell-ccic/cafe-driver.c b/drivers/media/video/marvell-ccic/cafe-driver.c
deleted file mode 100644
index d030f9beae88..000000000000
--- a/drivers/media/video/marvell-ccic/cafe-driver.c
+++ /dev/null
@@ -1,654 +0,0 @@
1/*
2 * A driver for the CMOS camera controller in the Marvell 88ALP01 "cafe"
3 * multifunction chip. Currently works with the Omnivision OV7670
4 * sensor.
5 *
6 * The data sheet for this device can be found at:
7 * http://www.marvell.com/products/pc_connectivity/88alp01/
8 *
9 * Copyright 2006-11 One Laptop Per Child Association, Inc.
10 * Copyright 2006-11 Jonathan Corbet <corbet@lwn.net>
11 *
12 * Written by Jonathan Corbet, corbet@lwn.net.
13 *
14 * v4l2_device/v4l2_subdev conversion by:
15 * Copyright (C) 2009 Hans Verkuil <hverkuil@xs4all.nl>
16 *
17 * This file may be distributed under the terms of the GNU General
18 * Public License, version 2.
19 */
20#include <linux/kernel.h>
21#include <linux/module.h>
22#include <linux/init.h>
23#include <linux/pci.h>
24#include <linux/i2c.h>
25#include <linux/interrupt.h>
26#include <linux/spinlock.h>
27#include <linux/slab.h>
28#include <linux/videodev2.h>
29#include <media/v4l2-device.h>
30#include <media/v4l2-chip-ident.h>
31#include <linux/device.h>
32#include <linux/wait.h>
33#include <linux/delay.h>
34#include <linux/io.h>
35
36#include "mcam-core.h"
37
38#define CAFE_VERSION 0x000002
39
40
41/*
42 * Parameters.
43 */
44MODULE_AUTHOR("Jonathan Corbet <corbet@lwn.net>");
45MODULE_DESCRIPTION("Marvell 88ALP01 CMOS Camera Controller driver");
46MODULE_LICENSE("GPL");
47MODULE_SUPPORTED_DEVICE("Video");
48
49
50
51
52struct cafe_camera {
53 int registered; /* Fully initialized? */
54 struct mcam_camera mcam;
55 struct pci_dev *pdev;
56 wait_queue_head_t smbus_wait; /* Waiting on i2c events */
57};
58
59/*
60 * Most of the camera controller registers are defined in mcam-core.h,
61 * but the Cafe platform has some additional registers of its own;
62 * they are described here.
63 */
64
65/*
66 * "General purpose register" has a couple of GPIOs used for sensor
67 * power and reset on OLPC XO 1.0 systems.
68 */
69#define REG_GPR 0xb4
70#define GPR_C1EN 0x00000020 /* Pad 1 (power down) enable */
71#define GPR_C0EN 0x00000010 /* Pad 0 (reset) enable */
72#define GPR_C1 0x00000002 /* Control 1 value */
73/*
74 * Control 0 is wired to reset on OLPC machines. For ov7x sensors,
75 * it is active low.
76 */
77#define GPR_C0 0x00000001 /* Control 0 value */
78
79/*
80 * These registers control the SMBUS module for communicating
81 * with the sensor.
82 */
83#define REG_TWSIC0 0xb8 /* TWSI (smbus) control 0 */
84#define TWSIC0_EN 0x00000001 /* TWSI enable */
85#define TWSIC0_MODE 0x00000002 /* 1 = 16-bit, 0 = 8-bit */
86#define TWSIC0_SID 0x000003fc /* Slave ID */
87/*
88 * Subtle trickery: the slave ID field starts with bit 2. But the
89 * Linux i2c stack wants to treat the bottommost bit as a separate
90 * read/write bit, which is why slave ID's are usually presented
91 * >>1. For consistency with that behavior, we shift over three
92 * bits instead of two.
93 */
94#define TWSIC0_SID_SHIFT 3
95#define TWSIC0_CLKDIV 0x0007fc00 /* Clock divider */
96#define TWSIC0_MASKACK 0x00400000 /* Mask ack from sensor */
97#define TWSIC0_OVMAGIC 0x00800000 /* Make it work on OV sensors */
98
99#define REG_TWSIC1 0xbc /* TWSI control 1 */
100#define TWSIC1_DATA 0x0000ffff /* Data to/from camchip */
101#define TWSIC1_ADDR 0x00ff0000 /* Address (register) */
102#define TWSIC1_ADDR_SHIFT 16
103#define TWSIC1_READ 0x01000000 /* Set for read op */
104#define TWSIC1_WSTAT 0x02000000 /* Write status */
105#define TWSIC1_RVALID 0x04000000 /* Read data valid */
106#define TWSIC1_ERROR 0x08000000 /* Something screwed up */
107
108/*
109 * Here's the weird global control registers
110 */
111#define REG_GL_CSR 0x3004 /* Control/status register */
112#define GCSR_SRS 0x00000001 /* SW Reset set */
113#define GCSR_SRC 0x00000002 /* SW Reset clear */
114#define GCSR_MRS 0x00000004 /* Master reset set */
115#define GCSR_MRC 0x00000008 /* HW Reset clear */
116#define GCSR_CCIC_EN 0x00004000 /* CCIC Clock enable */
117#define REG_GL_IMASK 0x300c /* Interrupt mask register */
118#define GIMSK_CCIC_EN 0x00000004 /* CCIC Interrupt enable */
119
120#define REG_GL_FCR 0x3038 /* GPIO functional control register */
121#define GFCR_GPIO_ON 0x08 /* Camera GPIO enabled */
122#define REG_GL_GPIOR 0x315c /* GPIO register */
123#define GGPIO_OUT 0x80000 /* GPIO output */
124#define GGPIO_VAL 0x00008 /* Output pin value */
125
126#define REG_LEN (REG_GL_IMASK + 4)
127
128
129/*
130 * Debugging and related.
131 */
132#define cam_err(cam, fmt, arg...) \
133 dev_err(&(cam)->pdev->dev, fmt, ##arg);
134#define cam_warn(cam, fmt, arg...) \
135 dev_warn(&(cam)->pdev->dev, fmt, ##arg);
136
137/* -------------------------------------------------------------------- */
138/*
139 * The I2C/SMBUS interface to the camera itself starts here. The
140 * controller handles SMBUS itself, presenting a relatively simple register
141 * interface; all we have to do is to tell it where to route the data.
142 */
143#define CAFE_SMBUS_TIMEOUT (HZ) /* generous */
144
145static inline struct cafe_camera *to_cam(struct v4l2_device *dev)
146{
147 struct mcam_camera *m = container_of(dev, struct mcam_camera, v4l2_dev);
148 return container_of(m, struct cafe_camera, mcam);
149}
150
151
152static int cafe_smbus_write_done(struct mcam_camera *mcam)
153{
154 unsigned long flags;
155 int c1;
156
157 /*
158 * We must delay after the interrupt, or the controller gets confused
159 * and never does give us good status. Fortunately, we don't do this
160 * often.
161 */
162 udelay(20);
163 spin_lock_irqsave(&mcam->dev_lock, flags);
164 c1 = mcam_reg_read(mcam, REG_TWSIC1);
165 spin_unlock_irqrestore(&mcam->dev_lock, flags);
166 return (c1 & (TWSIC1_WSTAT|TWSIC1_ERROR)) != TWSIC1_WSTAT;
167}
168
169static int cafe_smbus_write_data(struct cafe_camera *cam,
170 u16 addr, u8 command, u8 value)
171{
172 unsigned int rval;
173 unsigned long flags;
174 struct mcam_camera *mcam = &cam->mcam;
175
176 spin_lock_irqsave(&mcam->dev_lock, flags);
177 rval = TWSIC0_EN | ((addr << TWSIC0_SID_SHIFT) & TWSIC0_SID);
178 rval |= TWSIC0_OVMAGIC; /* Make OV sensors work */
179 /*
180 * Marvell sez set clkdiv to all 1's for now.
181 */
182 rval |= TWSIC0_CLKDIV;
183 mcam_reg_write(mcam, REG_TWSIC0, rval);
184 (void) mcam_reg_read(mcam, REG_TWSIC1); /* force write */
185 rval = value | ((command << TWSIC1_ADDR_SHIFT) & TWSIC1_ADDR);
186 mcam_reg_write(mcam, REG_TWSIC1, rval);
187 spin_unlock_irqrestore(&mcam->dev_lock, flags);
188
189 /* Unfortunately, reading TWSIC1 too soon after sending a command
190 * causes the device to die.
191 * Use a busy-wait because we often send a large quantity of small
192 * commands at-once; using msleep() would cause a lot of context
193 * switches which take longer than 2ms, resulting in a noticeable
194 * boot-time and capture-start delays.
195 */
196 mdelay(2);
197
198 /*
199 * Another sad fact is that sometimes, commands silently complete but
200 * cafe_smbus_write_done() never becomes aware of this.
201 * This happens at random and appears to possible occur with any
202 * command.
203 * We don't understand why this is. We work around this issue
204 * with the timeout in the wait below, assuming that all commands
205 * complete within the timeout.
206 */
207 wait_event_timeout(cam->smbus_wait, cafe_smbus_write_done(mcam),
208 CAFE_SMBUS_TIMEOUT);
209
210 spin_lock_irqsave(&mcam->dev_lock, flags);
211 rval = mcam_reg_read(mcam, REG_TWSIC1);
212 spin_unlock_irqrestore(&mcam->dev_lock, flags);
213
214 if (rval & TWSIC1_WSTAT) {
215 cam_err(cam, "SMBUS write (%02x/%02x/%02x) timed out\n", addr,
216 command, value);
217 return -EIO;
218 }
219 if (rval & TWSIC1_ERROR) {
220 cam_err(cam, "SMBUS write (%02x/%02x/%02x) error\n", addr,
221 command, value);
222 return -EIO;
223 }
224 return 0;
225}
226
227
228
229static int cafe_smbus_read_done(struct mcam_camera *mcam)
230{
231 unsigned long flags;
232 int c1;
233
234 /*
235 * We must delay after the interrupt, or the controller gets confused
236 * and never does give us good status. Fortunately, we don't do this
237 * often.
238 */
239 udelay(20);
240 spin_lock_irqsave(&mcam->dev_lock, flags);
241 c1 = mcam_reg_read(mcam, REG_TWSIC1);
242 spin_unlock_irqrestore(&mcam->dev_lock, flags);
243 return c1 & (TWSIC1_RVALID|TWSIC1_ERROR);
244}
245
246
247
248static int cafe_smbus_read_data(struct cafe_camera *cam,
249 u16 addr, u8 command, u8 *value)
250{
251 unsigned int rval;
252 unsigned long flags;
253 struct mcam_camera *mcam = &cam->mcam;
254
255 spin_lock_irqsave(&mcam->dev_lock, flags);
256 rval = TWSIC0_EN | ((addr << TWSIC0_SID_SHIFT) & TWSIC0_SID);
257 rval |= TWSIC0_OVMAGIC; /* Make OV sensors work */
258 /*
259 * Marvel sez set clkdiv to all 1's for now.
260 */
261 rval |= TWSIC0_CLKDIV;
262 mcam_reg_write(mcam, REG_TWSIC0, rval);
263 (void) mcam_reg_read(mcam, REG_TWSIC1); /* force write */
264 rval = TWSIC1_READ | ((command << TWSIC1_ADDR_SHIFT) & TWSIC1_ADDR);
265 mcam_reg_write(mcam, REG_TWSIC1, rval);
266 spin_unlock_irqrestore(&mcam->dev_lock, flags);
267
268 wait_event_timeout(cam->smbus_wait,
269 cafe_smbus_read_done(mcam), CAFE_SMBUS_TIMEOUT);
270 spin_lock_irqsave(&mcam->dev_lock, flags);
271 rval = mcam_reg_read(mcam, REG_TWSIC1);
272 spin_unlock_irqrestore(&mcam->dev_lock, flags);
273
274 if (rval & TWSIC1_ERROR) {
275 cam_err(cam, "SMBUS read (%02x/%02x) error\n", addr, command);
276 return -EIO;
277 }
278 if (!(rval & TWSIC1_RVALID)) {
279 cam_err(cam, "SMBUS read (%02x/%02x) timed out\n", addr,
280 command);
281 return -EIO;
282 }
283 *value = rval & 0xff;
284 return 0;
285}
286
287/*
288 * Perform a transfer over SMBUS. This thing is called under
289 * the i2c bus lock, so we shouldn't race with ourselves...
290 */
291static int cafe_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
292 unsigned short flags, char rw, u8 command,
293 int size, union i2c_smbus_data *data)
294{
295 struct cafe_camera *cam = i2c_get_adapdata(adapter);
296 int ret = -EINVAL;
297
298 /*
299 * This interface would appear to only do byte data ops. OK
300 * it can do word too, but the cam chip has no use for that.
301 */
302 if (size != I2C_SMBUS_BYTE_DATA) {
303 cam_err(cam, "funky xfer size %d\n", size);
304 return -EINVAL;
305 }
306
307 if (rw == I2C_SMBUS_WRITE)
308 ret = cafe_smbus_write_data(cam, addr, command, data->byte);
309 else if (rw == I2C_SMBUS_READ)
310 ret = cafe_smbus_read_data(cam, addr, command, &data->byte);
311 return ret;
312}
313
314
315static void cafe_smbus_enable_irq(struct cafe_camera *cam)
316{
317 unsigned long flags;
318
319 spin_lock_irqsave(&cam->mcam.dev_lock, flags);
320 mcam_reg_set_bit(&cam->mcam, REG_IRQMASK, TWSIIRQS);
321 spin_unlock_irqrestore(&cam->mcam.dev_lock, flags);
322}
323
324static u32 cafe_smbus_func(struct i2c_adapter *adapter)
325{
326 return I2C_FUNC_SMBUS_READ_BYTE_DATA |
327 I2C_FUNC_SMBUS_WRITE_BYTE_DATA;
328}
329
330static struct i2c_algorithm cafe_smbus_algo = {
331 .smbus_xfer = cafe_smbus_xfer,
332 .functionality = cafe_smbus_func
333};
334
335static int cafe_smbus_setup(struct cafe_camera *cam)
336{
337 struct i2c_adapter *adap;
338 int ret;
339
340 adap = kzalloc(sizeof(*adap), GFP_KERNEL);
341 if (adap == NULL)
342 return -ENOMEM;
343 cam->mcam.i2c_adapter = adap;
344 cafe_smbus_enable_irq(cam);
345 adap->owner = THIS_MODULE;
346 adap->algo = &cafe_smbus_algo;
347 strcpy(adap->name, "cafe_ccic");
348 adap->dev.parent = &cam->pdev->dev;
349 i2c_set_adapdata(adap, cam);
350 ret = i2c_add_adapter(adap);
351 if (ret)
352 printk(KERN_ERR "Unable to register cafe i2c adapter\n");
353 return ret;
354}
355
356static void cafe_smbus_shutdown(struct cafe_camera *cam)
357{
358 i2c_del_adapter(cam->mcam.i2c_adapter);
359 kfree(cam->mcam.i2c_adapter);
360}
361
362
363/*
364 * Controller-level stuff
365 */
366
367static void cafe_ctlr_init(struct mcam_camera *mcam)
368{
369 unsigned long flags;
370
371 spin_lock_irqsave(&mcam->dev_lock, flags);
372 /*
373 * Added magic to bring up the hardware on the B-Test board
374 */
375 mcam_reg_write(mcam, 0x3038, 0x8);
376 mcam_reg_write(mcam, 0x315c, 0x80008);
377 /*
378 * Go through the dance needed to wake the device up.
379 * Note that these registers are global and shared
380 * with the NAND and SD devices. Interaction between the
381 * three still needs to be examined.
382 */
383 mcam_reg_write(mcam, REG_GL_CSR, GCSR_SRS|GCSR_MRS); /* Needed? */
384 mcam_reg_write(mcam, REG_GL_CSR, GCSR_SRC|GCSR_MRC);
385 mcam_reg_write(mcam, REG_GL_CSR, GCSR_SRC|GCSR_MRS);
386 /*
387 * Here we must wait a bit for the controller to come around.
388 */
389 spin_unlock_irqrestore(&mcam->dev_lock, flags);
390 msleep(5);
391 spin_lock_irqsave(&mcam->dev_lock, flags);
392
393 mcam_reg_write(mcam, REG_GL_CSR, GCSR_CCIC_EN|GCSR_SRC|GCSR_MRC);
394 mcam_reg_set_bit(mcam, REG_GL_IMASK, GIMSK_CCIC_EN);
395 /*
396 * Mask all interrupts.
397 */
398 mcam_reg_write(mcam, REG_IRQMASK, 0);
399 spin_unlock_irqrestore(&mcam->dev_lock, flags);
400}
401
402
403static void cafe_ctlr_power_up(struct mcam_camera *mcam)
404{
405 /*
406 * Part one of the sensor dance: turn the global
407 * GPIO signal on.
408 */
409 mcam_reg_write(mcam, REG_GL_FCR, GFCR_GPIO_ON);
410 mcam_reg_write(mcam, REG_GL_GPIOR, GGPIO_OUT|GGPIO_VAL);
411 /*
412 * Put the sensor into operational mode (assumes OLPC-style
413 * wiring). Control 0 is reset - set to 1 to operate.
414 * Control 1 is power down, set to 0 to operate.
415 */
416 mcam_reg_write(mcam, REG_GPR, GPR_C1EN|GPR_C0EN); /* pwr up, reset */
417 mcam_reg_write(mcam, REG_GPR, GPR_C1EN|GPR_C0EN|GPR_C0);
418}
419
420static void cafe_ctlr_power_down(struct mcam_camera *mcam)
421{
422 mcam_reg_write(mcam, REG_GPR, GPR_C1EN|GPR_C0EN|GPR_C1);
423 mcam_reg_write(mcam, REG_GL_FCR, GFCR_GPIO_ON);
424 mcam_reg_write(mcam, REG_GL_GPIOR, GGPIO_OUT);
425}
426
427
428
429/*
430 * The platform interrupt handler.
431 */
432static irqreturn_t cafe_irq(int irq, void *data)
433{
434 struct cafe_camera *cam = data;
435 struct mcam_camera *mcam = &cam->mcam;
436 unsigned int irqs, handled;
437
438 spin_lock(&mcam->dev_lock);
439 irqs = mcam_reg_read(mcam, REG_IRQSTAT);
440 handled = cam->registered && mccic_irq(mcam, irqs);
441 if (irqs & TWSIIRQS) {
442 mcam_reg_write(mcam, REG_IRQSTAT, TWSIIRQS);
443 wake_up(&cam->smbus_wait);
444 handled = 1;
445 }
446 spin_unlock(&mcam->dev_lock);
447 return IRQ_RETVAL(handled);
448}
449
450
451/* -------------------------------------------------------------------------- */
452/*
453 * PCI interface stuff.
454 */
455
456static int cafe_pci_probe(struct pci_dev *pdev,
457 const struct pci_device_id *id)
458{
459 int ret;
460 struct cafe_camera *cam;
461 struct mcam_camera *mcam;
462
463 /*
464 * Start putting together one of our big camera structures.
465 */
466 ret = -ENOMEM;
467 cam = kzalloc(sizeof(struct cafe_camera), GFP_KERNEL);
468 if (cam == NULL)
469 goto out;
470 cam->pdev = pdev;
471 mcam = &cam->mcam;
472 mcam->chip_id = V4L2_IDENT_CAFE;
473 spin_lock_init(&mcam->dev_lock);
474 init_waitqueue_head(&cam->smbus_wait);
475 mcam->plat_power_up = cafe_ctlr_power_up;
476 mcam->plat_power_down = cafe_ctlr_power_down;
477 mcam->dev = &pdev->dev;
478 /*
479 * Set the clock speed for the XO 1; I don't believe this
480 * driver has ever run anywhere else.
481 */
482 mcam->clock_speed = 45;
483 mcam->use_smbus = 1;
484 /*
485 * Vmalloc mode for buffers is traditional with this driver.
486 * We *might* be able to run DMA_contig, especially on a system
487 * with CMA in it.
488 */
489 mcam->buffer_mode = B_vmalloc;
490 /*
491 * Get set up on the PCI bus.
492 */
493 ret = pci_enable_device(pdev);
494 if (ret)
495 goto out_free;
496 pci_set_master(pdev);
497
498 ret = -EIO;
499 mcam->regs = pci_iomap(pdev, 0, 0);
500 if (!mcam->regs) {
501 printk(KERN_ERR "Unable to ioremap cafe-ccic regs\n");
502 goto out_disable;
503 }
504 ret = request_irq(pdev->irq, cafe_irq, IRQF_SHARED, "cafe-ccic", cam);
505 if (ret)
506 goto out_iounmap;
507
508 /*
509 * Initialize the controller and leave it powered up. It will
510 * stay that way until the sensor driver shows up.
511 */
512 cafe_ctlr_init(mcam);
513 cafe_ctlr_power_up(mcam);
514 /*
515 * Set up I2C/SMBUS communications. We have to drop the mutex here
516 * because the sensor could attach in this call chain, leading to
517 * unsightly deadlocks.
518 */
519 ret = cafe_smbus_setup(cam);
520 if (ret)
521 goto out_pdown;
522
523 ret = mccic_register(mcam);
524 if (ret == 0) {
525 cam->registered = 1;
526 return 0;
527 }
528
529 cafe_smbus_shutdown(cam);
530out_pdown:
531 cafe_ctlr_power_down(mcam);
532 free_irq(pdev->irq, cam);
533out_iounmap:
534 pci_iounmap(pdev, mcam->regs);
535out_disable:
536 pci_disable_device(pdev);
537out_free:
538 kfree(cam);
539out:
540 return ret;
541}
542
543
544/*
545 * Shut down an initialized device
546 */
547static void cafe_shutdown(struct cafe_camera *cam)
548{
549 mccic_shutdown(&cam->mcam);
550 cafe_smbus_shutdown(cam);
551 free_irq(cam->pdev->irq, cam);
552 pci_iounmap(cam->pdev, cam->mcam.regs);
553}
554
555
556static void cafe_pci_remove(struct pci_dev *pdev)
557{
558 struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
559 struct cafe_camera *cam = to_cam(v4l2_dev);
560
561 if (cam == NULL) {
562 printk(KERN_WARNING "pci_remove on unknown pdev %p\n", pdev);
563 return;
564 }
565 cafe_shutdown(cam);
566 kfree(cam);
567}
568
569
570#ifdef CONFIG_PM
571/*
572 * Basic power management.
573 */
574static int cafe_pci_suspend(struct pci_dev *pdev, pm_message_t state)
575{
576 struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
577 struct cafe_camera *cam = to_cam(v4l2_dev);
578 int ret;
579
580 ret = pci_save_state(pdev);
581 if (ret)
582 return ret;
583 mccic_suspend(&cam->mcam);
584 pci_disable_device(pdev);
585 return 0;
586}
587
588
589static int cafe_pci_resume(struct pci_dev *pdev)
590{
591 struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
592 struct cafe_camera *cam = to_cam(v4l2_dev);
593 int ret = 0;
594
595 pci_restore_state(pdev);
596 ret = pci_enable_device(pdev);
597
598 if (ret) {
599 cam_warn(cam, "Unable to re-enable device on resume!\n");
600 return ret;
601 }
602 cafe_ctlr_init(&cam->mcam);
603 return mccic_resume(&cam->mcam);
604}
605
606#endif /* CONFIG_PM */
607
608static struct pci_device_id cafe_ids[] = {
609 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL,
610 PCI_DEVICE_ID_MARVELL_88ALP01_CCIC) },
611 { 0, }
612};
613
614MODULE_DEVICE_TABLE(pci, cafe_ids);
615
616static struct pci_driver cafe_pci_driver = {
617 .name = "cafe1000-ccic",
618 .id_table = cafe_ids,
619 .probe = cafe_pci_probe,
620 .remove = cafe_pci_remove,
621#ifdef CONFIG_PM
622 .suspend = cafe_pci_suspend,
623 .resume = cafe_pci_resume,
624#endif
625};
626
627
628
629
630static int __init cafe_init(void)
631{
632 int ret;
633
634 printk(KERN_NOTICE "Marvell M88ALP01 'CAFE' Camera Controller version %d\n",
635 CAFE_VERSION);
636 ret = pci_register_driver(&cafe_pci_driver);
637 if (ret) {
638 printk(KERN_ERR "Unable to register cafe_ccic driver\n");
639 goto out;
640 }
641 ret = 0;
642
643out:
644 return ret;
645}
646
647
648static void __exit cafe_exit(void)
649{
650 pci_unregister_driver(&cafe_pci_driver);
651}
652
653module_init(cafe_init);
654module_exit(cafe_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 08:19:07 -0500