+++ /dev/null
-/*
- * Copyright (c) 2011 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <linux/delay.h>
-#include <linux/io.h>
-
-#include <brcm_hw_ids.h>
-#include <chipcommon.h>
-#include <brcmu_utils.h>
-#include "pub.h"
-#include "aiutils.h"
-#include "pmu.h"
-#include "soc.h"
-
-/*
- * external LPO crystal frequency
- */
-#define EXT_ILP_HZ 32768
-
-/*
- * Duration for ILP clock frequency measurment in milliseconds
- *
- * remark: 1000 must be an integer multiple of this duration
- */
-#define ILP_CALC_DUR 10
-
-/* Fields in pmucontrol */
-#define PCTL_ILP_DIV_MASK 0xffff0000
-#define PCTL_ILP_DIV_SHIFT 16
-#define PCTL_PLL_PLLCTL_UPD 0x00000400 /* rev 2 */
-#define PCTL_NOILP_ON_WAIT 0x00000200 /* rev 1 */
-#define PCTL_HT_REQ_EN 0x00000100
-#define PCTL_ALP_REQ_EN 0x00000080
-#define PCTL_XTALFREQ_MASK 0x0000007c
-#define PCTL_XTALFREQ_SHIFT 2
-#define PCTL_ILP_DIV_EN 0x00000002
-#define PCTL_LPO_SEL 0x00000001
-
-/* ILP clock */
-#define ILP_CLOCK 32000
-
-/* ALP clock on pre-PMU chips */
-#define ALP_CLOCK 20000000
-
-/* pmustatus */
-#define PST_EXTLPOAVAIL 0x0100
-#define PST_WDRESET 0x0080
-#define PST_INTPEND 0x0040
-#define PST_SBCLKST 0x0030
-#define PST_SBCLKST_ILP 0x0010
-#define PST_SBCLKST_ALP 0x0020
-#define PST_SBCLKST_HT 0x0030
-#define PST_ALPAVAIL 0x0008
-#define PST_HTAVAIL 0x0004
-#define PST_RESINIT 0x0003
-
-/* PMU resource bit position */
-#define PMURES_BIT(bit) (1 << (bit))
-
-/* PMU corerev and chip specific PLL controls.
- * PMU<rev>_PLL<num>_XX where <rev> is PMU corerev and <num> is an arbitrary
- * number to differentiate different PLLs controlled by the same PMU rev.
- */
-
-/* pmu XtalFreqRatio */
-#define PMU_XTALFREQ_REG_ILPCTR_MASK 0x00001FFF
-#define PMU_XTALFREQ_REG_MEASURE_MASK 0x80000000
-#define PMU_XTALFREQ_REG_MEASURE_SHIFT 31
-
-/* 4313 resources */
-#define RES4313_BB_PU_RSRC 0
-#define RES4313_ILP_REQ_RSRC 1
-#define RES4313_XTAL_PU_RSRC 2
-#define RES4313_ALP_AVAIL_RSRC 3
-#define RES4313_RADIO_PU_RSRC 4
-#define RES4313_BG_PU_RSRC 5
-#define RES4313_VREG1P4_PU_RSRC 6
-#define RES4313_AFE_PWRSW_RSRC 7
-#define RES4313_RX_PWRSW_RSRC 8
-#define RES4313_TX_PWRSW_RSRC 9
-#define RES4313_BB_PWRSW_RSRC 10
-#define RES4313_SYNTH_PWRSW_RSRC 11
-#define RES4313_MISC_PWRSW_RSRC 12
-#define RES4313_BB_PLL_PWRSW_RSRC 13
-#define RES4313_HT_AVAIL_RSRC 14
-#define RES4313_MACPHY_CLK_AVAIL_RSRC 15
-
-u16 si_pmu_fast_pwrup_delay(struct si_pub *sih)
-{
- uint delay = PMU_MAX_TRANSITION_DLY;
-
- switch (ai_get_chip_id(sih)) {
- case BCMA_CHIP_ID_BCM43224:
- case BCMA_CHIP_ID_BCM43225:
- case BCMA_CHIP_ID_BCM4313:
- delay = 3700;
- break;
- default:
- break;
- }
-
- return (u16) delay;
-}
-
-u32 si_pmu_measure_alpclk(struct si_pub *sih)
-{
- struct si_info *sii = container_of(sih, struct si_info, pub);
- struct bcma_device *core;
- u32 alp_khz;
-
- if (ai_get_pmurev(sih) < 10)
- return 0;
-
- /* Remember original core before switch to chipc */
- core = sii->icbus->drv_cc.core;
-
- if (bcma_read32(core, CHIPCREGOFFS(pmustatus)) & PST_EXTLPOAVAIL) {
- u32 ilp_ctr, alp_hz;
-
- /*
- * Enable the reg to measure the freq,
- * in case it was disabled before
- */
- bcma_write32(core, CHIPCREGOFFS(pmu_xtalfreq),
- 1U << PMU_XTALFREQ_REG_MEASURE_SHIFT);
-
- /* Delay for well over 4 ILP clocks */
- udelay(1000);
-
- /* Read the latched number of ALP ticks per 4 ILP ticks */
- ilp_ctr = bcma_read32(core, CHIPCREGOFFS(pmu_xtalfreq)) &
- PMU_XTALFREQ_REG_ILPCTR_MASK;
-
- /*
- * Turn off the PMU_XTALFREQ_REG_MEASURE_SHIFT
- * bit to save power
- */
- bcma_write32(core, CHIPCREGOFFS(pmu_xtalfreq), 0);
-
- /* Calculate ALP frequency */
- alp_hz = (ilp_ctr * EXT_ILP_HZ) / 4;
-
- /*
- * Round to nearest 100KHz, and at
- * the same time convert to KHz
- */
- alp_khz = (alp_hz + 50000) / 100000 * 100;
- } else
- alp_khz = 0;
-
- return alp_khz;
-}
projects / cascardo / linux.git / blobdiff