| iiconf.c (119418) | iiconf.c (160372) |
|---|---|
| 1/*- 2 * Copyright (c) 1998 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1998 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/dev/iicbus/iiconf.c 119418 2003-08-24 17:55:58Z obrien $"); | 28__FBSDID("$FreeBSD: head/sys/dev/iicbus/iiconf.c 160372 2006-07-14 23:15:06Z imp $"); |
| 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/module.h> 33#include <sys/bus.h> 34 35#include <dev/iicbus/iiconf.h> 36#include <dev/iicbus/iicbus.h> --- 289 unchanged lines hidden (view full) --- 326 return (error); 327 328 error = iicbus_read(bus, buf, len, read, IIC_LAST_READ, 0); 329 330 iicbus_stop(bus); 331 332 return (error); 333} | 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/module.h> 33#include <sys/bus.h> 34 35#include <dev/iicbus/iiconf.h> 36#include <dev/iicbus/iicbus.h> --- 289 unchanged lines hidden (view full) --- 326 return (error); 327 328 error = iicbus_read(bus, buf, len, read, IIC_LAST_READ, 0); 329 330 iicbus_stop(bus); 331 332 return (error); 333} |
| 334 335/* 336 * iicbus_trasnfer() 337 * 338 * Do an aribtrary number of transfers on the iicbus. We pass these 339 * raw requests to the bridge driver. If the bridge driver supports 340 * them directly, then it manages all the details. If not, it can use 341 * the helper function iicbus_transfer_gen() which will do the 342 * transfers at a low level. 343 * 344 * Pointers passed in as part of iic_msg must be kernel pointers. 345 * Callers that have user addresses to manage must do so on their own. 346 */ 347int 348iicbus_transfer(device_t bus, struct iic_msg *msgs, uint32_t nmsgs) 349{ 350 return (IICBUS_TRANSFER(device_get_parent(bus), msgs, nmsgs)); 351} 352 353/* 354 * Generic version of iicbus_transfer that calls the appropriate 355 * routines to accomplish this. See note above about acceptable 356 * buffer addresses. 357 */ 358int 359iicbus_transfer_gen(device_t bus, struct iic_msg *msgs, uint32_t nmsgs) 360{ 361 int i, error, max, lenread, lenwrote; 362 363 for (i = 0, max = 0; i < nmsgs; i++) 364 if (max < msgs[i].len) 365 max = msgs[i].len; 366 for (i = 0, error = 0; i < nmsgs && error == 0; i++) { 367 if (msgs[i].flags & IIC_M_RD) 368 error = iicbus_block_read(bus, msgs[i].slave, 369 msgs[i].buf, msgs[i].len, &lenread); 370 else 371 error = iicbus_block_write(bus, msgs[i].slave, 372 msgs[i].buf, msgs[i].len, &lenwrote); 373 } 374 return (error); 375} |
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