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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 15:04:17 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 15:04:17 -0400 |
commit | 702c0b04978ce316ec05f4d0a9c148fac124335b (patch) | |
tree | 3908c5821221d950a6b1a7e2e898899e63e7d437 /drivers/serial | |
parent | c19eb8f0d1bd442ed1aff0b413dd822620771c29 (diff) | |
parent | bf6a67ee3427ab142136e03e90d0b67ecbca5ff2 (diff) |
Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6
* 'next-spi' of git://git.secretlab.ca/git/linux-2.6:
spi/xilinx: Fix compile error
spi/davinci: Fix clock prescale factor computation
spi: move bitbang txrx utility functions to private header
spi/mpc5121: Add SPI master driver for MPC5121 PSC
powerpc/mpc5121: move PSC FIFO memory init to platform code
spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller
Documentation/spi/* compile warning fix
spi/omap2_mcspi: Check params before dereference or use
spi/omap2_mcspi: add turbo mode support
spi/omap2_mcspi: change default DMA_MIN_BYTES value to 160
spi/pl022: fix stop queue procedure
spi/pl022: add support for the PL023 derivate
spi/pl022: fix up differences between ARM and ST versions
spi/spi_mpc8xxx: Do not use map_tx_dma to unmap rx_dma
spi/spi_mpc8xxx: Fix QE mode Litte Endian
spi/spi_mpc8xxx: fix potential memory corruption.
Diffstat (limited to 'drivers/serial')
-rw-r--r-- | drivers/serial/mpc52xx_uart.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index beb4710faeee..84a35f699016 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c | |||
@@ -397,34 +397,10 @@ static unsigned long mpc512x_getuartclk(void *p) | |||
397 | return mpc5xxx_get_bus_frequency(p); | 397 | return mpc5xxx_get_bus_frequency(p); |
398 | } | 398 | } |
399 | 399 | ||
400 | #define DEFAULT_FIFO_SIZE 16 | ||
401 | |||
402 | static unsigned int __init get_fifo_size(struct device_node *np, | ||
403 | char *fifo_name) | ||
404 | { | ||
405 | const unsigned int *fp; | ||
406 | |||
407 | fp = of_get_property(np, fifo_name, NULL); | ||
408 | if (fp) | ||
409 | return *fp; | ||
410 | |||
411 | pr_warning("no %s property in %s node, defaulting to %d\n", | ||
412 | fifo_name, np->full_name, DEFAULT_FIFO_SIZE); | ||
413 | |||
414 | return DEFAULT_FIFO_SIZE; | ||
415 | } | ||
416 | |||
417 | #define FIFOC(_base) ((struct mpc512x_psc_fifo __iomem *) \ | ||
418 | ((u32)(_base) + sizeof(struct mpc52xx_psc))) | ||
419 | |||
420 | /* Init PSC FIFO Controller */ | 400 | /* Init PSC FIFO Controller */ |
421 | static int __init mpc512x_psc_fifoc_init(void) | 401 | static int __init mpc512x_psc_fifoc_init(void) |
422 | { | 402 | { |
423 | struct device_node *np; | 403 | struct device_node *np; |
424 | void __iomem *psc; | ||
425 | unsigned int tx_fifo_size; | ||
426 | unsigned int rx_fifo_size; | ||
427 | int fifobase = 0; /* current fifo address in 32 bit words */ | ||
428 | 404 | ||
429 | np = of_find_compatible_node(NULL, NULL, | 405 | np = of_find_compatible_node(NULL, NULL, |
430 | "fsl,mpc5121-psc-fifo"); | 406 | "fsl,mpc5121-psc-fifo"); |
@@ -447,51 +423,6 @@ static int __init mpc512x_psc_fifoc_init(void) | |||
447 | return -ENODEV; | 423 | return -ENODEV; |
448 | } | 424 | } |
449 | 425 | ||
450 | for_each_compatible_node(np, NULL, "fsl,mpc5121-psc-uart") { | ||
451 | tx_fifo_size = get_fifo_size(np, "fsl,tx-fifo-size"); | ||
452 | rx_fifo_size = get_fifo_size(np, "fsl,rx-fifo-size"); | ||
453 | |||
454 | /* size in register is in 4 byte units */ | ||
455 | tx_fifo_size /= 4; | ||
456 | rx_fifo_size /= 4; | ||
457 | if (!tx_fifo_size) | ||
458 | tx_fifo_size = 1; | ||
459 | if (!rx_fifo_size) | ||
460 | rx_fifo_size = 1; | ||
461 | |||
462 | psc = of_iomap(np, 0); | ||
463 | if (!psc) { | ||
464 | pr_err("%s: Can't map %s device\n", | ||
465 | __func__, np->full_name); | ||
466 | continue; | ||
467 | } | ||
468 | |||
469 | /* FIFO space is 4KiB, check if requested size is available */ | ||
470 | if ((fifobase + tx_fifo_size + rx_fifo_size) > 0x1000) { | ||
471 | pr_err("%s: no fifo space available for %s\n", | ||
472 | __func__, np->full_name); | ||
473 | iounmap(psc); | ||
474 | /* | ||
475 | * chances are that another device requests less | ||
476 | * fifo space, so we continue. | ||
477 | */ | ||
478 | continue; | ||
479 | } | ||
480 | /* set tx and rx fifo size registers */ | ||
481 | out_be32(&FIFOC(psc)->txsz, (fifobase << 16) | tx_fifo_size); | ||
482 | fifobase += tx_fifo_size; | ||
483 | out_be32(&FIFOC(psc)->rxsz, (fifobase << 16) | rx_fifo_size); | ||
484 | fifobase += rx_fifo_size; | ||
485 | |||
486 | /* reset and enable the slices */ | ||
487 | out_be32(&FIFOC(psc)->txcmd, 0x80); | ||
488 | out_be32(&FIFOC(psc)->txcmd, 0x01); | ||
489 | out_be32(&FIFOC(psc)->rxcmd, 0x80); | ||
490 | out_be32(&FIFOC(psc)->rxcmd, 0x01); | ||
491 | |||
492 | iounmap(psc); | ||
493 | } | ||
494 | |||
495 | return 0; | 426 | return 0; |
496 | } | 427 | } |
497 | 428 | ||