| at91_pmc.c (213496) | at91_pmc.c (213498) |
|---|---|
| 1/*- 2 * Copyright (c) 2006 M. Warner Losh. All rights reserved. 3 * Copyright (c) 2010 Greg Ansley. 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) 2006 M. Warner Losh. All rights reserved. 3 * Copyright (c) 2010 Greg Ansley. 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/arm/at91/at91_pmc.c 213496 2010-10-06 22:25:21Z cognet $"); | 28__FBSDID("$FreeBSD: head/sys/arm/at91/at91_pmc.c 213498 2010-10-06 22:40:27Z cognet $"); |
| 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/malloc.h> 34#include <sys/module.h> 35#include <sys/time.h> 36#include <sys/bus.h> --- 289 unchanged lines hidden (view full) --- 326at91_pmc_pll_rate(struct at91_pmc_clock *clk, uint32_t reg) 327{ 328 uint32_t mul, div, freq;; 329 330 freq = clk->parent->hz; 331 div = (reg >> clk->pll_div_shift) & clk->pll_div_mask; 332 mul = (reg >> clk->pll_mul_shift) & clk->pll_mul_mask; 333 | 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/malloc.h> 34#include <sys/module.h> 35#include <sys/time.h> 36#include <sys/bus.h> --- 289 unchanged lines hidden (view full) --- 326at91_pmc_pll_rate(struct at91_pmc_clock *clk, uint32_t reg) 327{ 328 uint32_t mul, div, freq;; 329 330 freq = clk->parent->hz; 331 div = (reg >> clk->pll_div_shift) & clk->pll_div_mask; 332 mul = (reg >> clk->pll_mul_shift) & clk->pll_mul_mask; 333 |
| 334// printf("pll = (%d / %d) * %d = %d\n", 335// freq, div ,mul + 1, (freq/div) * (mul+1)); 336 |
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| 334 if (div != 0 && mul != 0) { 335 freq /= div; 336 freq *= mul + 1; 337 } else { 338 freq = 0; 339 } 340 clk->hz = freq; | 337 if (div != 0 && mul != 0) { 338 freq /= div; 339 freq *= mul + 1; 340 } else { 341 freq = 0; 342 } 343 clk->hz = freq; |
| 344 345 |
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| 341 return (freq); 342} 343 344static uint32_t 345at91_pmc_pll_calc(struct at91_pmc_clock *clk, uint32_t out_freq) 346{ 347 uint32_t i, div = 0, mul = 0, diff = 1 << 30; 348 --- 90 unchanged lines hidden (view full) --- 439 mck.parent->refcnt++; 440 441 cpu.hz = 442 mck.hz = mck.parent->hz / 443 (1 << ((mckr & PMC_MCKR_PRES_MASK) >> 2)); 444 445 mdiv = (mckr & PMC_MCKR_MDIV_MASK) >> 8; 446 if (at91_is_sam9()) { | 346 return (freq); 347} 348 349static uint32_t 350at91_pmc_pll_calc(struct at91_pmc_clock *clk, uint32_t out_freq) 351{ 352 uint32_t i, div = 0, mul = 0, diff = 1 << 30; 353 --- 90 unchanged lines hidden (view full) --- 444 mck.parent->refcnt++; 445 446 cpu.hz = 447 mck.hz = mck.parent->hz / 448 (1 << ((mckr & PMC_MCKR_PRES_MASK) >> 2)); 449 450 mdiv = (mckr & PMC_MCKR_MDIV_MASK) >> 8; 451 if (at91_is_sam9()) { |
| 447 mck.hz /= (mdiv) ? (mdiv * 2) : 1; | 452 if (mdiv > 0) 453 mck.hz /= mdiv * 2; |
| 448 } else 449 mck.hz /= (1 + mdiv); 450 451 /* Only found on SAM9G20 */ 452 if (at91_cpu_is(AT91_CPU_SAM9G20)) 453 cpu.hz /= (mckr & PMC_MCKR_PDIV) ? 2 : 1; 454 455 at91_master_clock = mck.hz; --- 126 unchanged lines hidden --- | 454 } else 455 mck.hz /= (1 + mdiv); 456 457 /* Only found on SAM9G20 */ 458 if (at91_cpu_is(AT91_CPU_SAM9G20)) 459 cpu.hz /= (mckr & PMC_MCKR_PDIV) ? 2 : 1; 460 461 at91_master_clock = mck.hz; --- 126 unchanged lines hidden --- |