diff options
Diffstat (limited to 'drivers/staging/brcm80211/brcmsmac/pmu.c')
| -rw-r--r-- | drivers/staging/brcm80211/brcmsmac/pmu.c | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/drivers/staging/brcm80211/brcmsmac/pmu.c b/drivers/staging/brcm80211/brcmsmac/pmu.c deleted file mode 100644 index e8b2b81d2d04..000000000000 --- a/drivers/staging/brcm80211/brcmsmac/pmu.c +++ /dev/null @@ -1,474 +0,0 @@ -/* - * 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" - -/* - * 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. - */ -/* pllcontrol registers */ -/* ndiv_pwrdn, pwrdn_ch<x>, refcomp_pwrdn, dly_ch<x>, p1div, p2div, _bypass_sdmod */ -#define PMU1_PLL0_PLLCTL0 0 -#define PMU1_PLL0_PLLCTL1 1 -#define PMU1_PLL0_PLLCTL2 2 -#define PMU1_PLL0_PLLCTL3 3 -#define PMU1_PLL0_PLLCTL4 4 -#define PMU1_PLL0_PLLCTL5 5 - -/* 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 - -/* Determine min/max rsrc masks. Value 0 leaves hardware at default. */ -static void si_pmu_res_masks(struct si_pub *sih, u32 * pmin, u32 * pmax) -{ - u32 min_mask = 0, max_mask = 0; - uint rsrcs; - - /* # resources */ - rsrcs = (sih->pmucaps & PCAP_RC_MASK) >> PCAP_RC_SHIFT; - - /* determine min/max rsrc masks */ - switch (sih->chip) { - case BCM43224_CHIP_ID: - case BCM43225_CHIP_ID: - /* ??? */ - break; - - case BCM4313_CHIP_ID: - min_mask = PMURES_BIT(RES4313_BB_PU_RSRC) | - PMURES_BIT(RES4313_XTAL_PU_RSRC) | - PMURES_BIT(RES4313_ALP_AVAIL_RSRC) | - PMURES_BIT(RES4313_BB_PLL_PWRSW_RSRC); - max_mask = 0xffff; - break; - default: - break; - } - - *pmin = min_mask; - *pmax = max_mask; -} - -static void -si_pmu_spuravoid_pllupdate(struct si_pub *sih, chipcregs_t *cc, u8 spuravoid) -{ - u32 tmp = 0; - - switch (sih->chip) { - case BCM43224_CHIP_ID: - case BCM43225_CHIP_ID: - if (spuravoid == 1) { - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL0); - W_REG(&cc->pllcontrol_data, 0x11500010); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL1); - W_REG(&cc->pllcontrol_data, 0x000C0C06); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL2); - W_REG(&cc->pllcontrol_data, 0x0F600a08); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL3); - W_REG(&cc->pllcontrol_data, 0x00000000); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL4); - W_REG(&cc->pllcontrol_data, 0x2001E920); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL5); - W_REG(&cc->pllcontrol_data, 0x88888815); - } else { - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL0); - W_REG(&cc->pllcontrol_data, 0x11100010); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL1); - W_REG(&cc->pllcontrol_data, 0x000c0c06); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL2); - W_REG(&cc->pllcontrol_data, 0x03000a08); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL3); - W_REG(&cc->pllcontrol_data, 0x00000000); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL4); - W_REG(&cc->pllcontrol_data, 0x200005c0); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL5); - W_REG(&cc->pllcontrol_data, 0x88888815); - } - tmp = 1 << 10; - break; - - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL0); - W_REG(&cc->pllcontrol_data, 0x11100008); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL1); - W_REG(&cc->pllcontrol_data, 0x0c000c06); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL2); - W_REG(&cc->pllcontrol_data, 0x03000a08); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL3); - W_REG(&cc->pllcontrol_data, 0x00000000); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL4); - W_REG(&cc->pllcontrol_data, 0x200005c0); - W_REG(&cc->pllcontrol_addr, PMU1_PLL0_PLLCTL5); - W_REG(&cc->pllcontrol_data, 0x88888855); - - tmp = 1 << 10; - break; - - default: - /* bail out */ - return; - } - - tmp |= R_REG(&cc->pmucontrol); - W_REG(&cc->pmucontrol, tmp); -} - -u32 si_pmu_ilp_clock(struct si_pub *sih) -{ - static u32 ilpcycles_per_sec; - - if (!PMUCTL_ENAB(sih)) - return ILP_CLOCK; - - if (ilpcycles_per_sec == 0) { - u32 start, end, delta; - u32 origidx = ai_coreidx(sih); - chipcregs_t *cc = ai_setcoreidx(sih, SI_CC_IDX); - start = R_REG(&cc->pmutimer); - mdelay(ILP_CALC_DUR); - end = R_REG(&cc->pmutimer); - delta = end - start; - ilpcycles_per_sec = delta * (1000 / ILP_CALC_DUR); - ai_setcoreidx(sih, origidx); - } - - return ilpcycles_per_sec; -} - -u16 si_pmu_fast_pwrup_delay(struct si_pub *sih) -{ - uint delay = PMU_MAX_TRANSITION_DLY; - - switch (sih->chip) { - case BCM43224_CHIP_ID: - case BCM43225_CHIP_ID: - case BCM4313_CHIP_ID: - delay = 3700; - break; - default: - break; - } - - return (u16) delay; -} - -void si_pmu_sprom_enable(struct si_pub *sih, bool enable) -{ - chipcregs_t *cc; - uint origidx; - - /* Remember original core before switch to chipc */ - origidx = ai_coreidx(sih); - cc = ai_setcoreidx(sih, SI_CC_IDX); - - /* Return to original core */ - ai_setcoreidx(sih, origidx); -} - -/* Read/write a chipcontrol reg */ -u32 si_pmu_chipcontrol(struct si_pub *sih, uint reg, u32 mask, u32 val) -{ - ai_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, chipcontrol_addr), ~0, - reg); - return ai_corereg(sih, SI_CC_IDX, - offsetof(chipcregs_t, chipcontrol_data), mask, val); -} - -/* Read/write a regcontrol reg */ -u32 si_pmu_regcontrol(struct si_pub *sih, uint reg, u32 mask, u32 val) -{ - ai_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, regcontrol_addr), ~0, - reg); - return ai_corereg(sih, SI_CC_IDX, - offsetof(chipcregs_t, regcontrol_data), mask, val); -} - -/* Read/write a pllcontrol reg */ -u32 si_pmu_pllcontrol(struct si_pub *sih, uint reg, u32 mask, u32 val) -{ - ai_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, pllcontrol_addr), ~0, - reg); - return ai_corereg(sih, SI_CC_IDX, - offsetof(chipcregs_t, pllcontrol_data), mask, val); -} - -/* PMU PLL update */ -void si_pmu_pllupd(struct si_pub *sih) -{ - ai_corereg(sih, SI_CC_IDX, offsetof(chipcregs_t, pmucontrol), - PCTL_PLL_PLLCTL_UPD, PCTL_PLL_PLLCTL_UPD); -} - -/* query alp/xtal clock frequency */ -u32 si_pmu_alp_clock(struct si_pub *sih) -{ - u32 clock = ALP_CLOCK; - - /* bail out with default */ - if (!PMUCTL_ENAB(sih)) - return clock; - - switch (sih->chip) { - case BCM43224_CHIP_ID: - case BCM43225_CHIP_ID: - case BCM4313_CHIP_ID: - /* always 20Mhz */ - clock = 20000 * 1000; - break; - default: - break; - } - - return clock; -} - -void si_pmu_spuravoid(struct si_pub *sih, u8 spuravoid) -{ - chipcregs_t *cc; - uint origidx, intr_val; - - /* Remember original core before switch to chipc */ - cc = (chipcregs_t *) ai_switch_core(sih, CC_CORE_ID, &origidx, - &intr_val); - - /* update the pll changes */ - si_pmu_spuravoid_pllupdate(sih, cc, spuravoid); - - /* Return to original core */ - ai_restore_core(sih, origidx, intr_val); -} - -/* initialize PMU */ -void si_pmu_init(struct si_pub *sih) -{ - chipcregs_t *cc; - uint origidx; - - /* Remember original core before switch to chipc */ - origidx = ai_coreidx(sih); - cc = ai_setcoreidx(sih, SI_CC_IDX); - - if (sih->pmurev == 1) - AND_REG(&cc->pmucontrol, ~PCTL_NOILP_ON_WAIT); - else if (sih->pmurev >= 2) - OR_REG(&cc->pmucontrol, PCTL_NOILP_ON_WAIT); - - /* Return to original core */ - ai_setcoreidx(sih, origidx); -} - -/* initialize PMU chip controls and other chip level stuff */ -void si_pmu_chip_init(struct si_pub *sih) -{ - uint origidx; - - /* Gate off SPROM clock and chip select signals */ - si_pmu_sprom_enable(sih, false); - - /* Remember original core */ - origidx = ai_coreidx(sih); - - /* Return to original core */ - ai_setcoreidx(sih, origidx); -} - -/* initialize PMU switch/regulators */ -void si_pmu_swreg_init(struct si_pub *sih) -{ -} - -/* initialize PLL */ -void si_pmu_pll_init(struct si_pub *sih, uint xtalfreq) -{ - chipcregs_t *cc; - uint origidx; - - /* Remember original core before switch to chipc */ - origidx = ai_coreidx(sih); - cc = ai_setcoreidx(sih, SI_CC_IDX); - - switch (sih->chip) { - case BCM4313_CHIP_ID: - case BCM43224_CHIP_ID: - case BCM43225_CHIP_ID: - /* ??? */ - break; - default: - break; - } - - /* Return to original core */ - ai_setcoreidx(sih, origidx); -} - -/* initialize PMU resources */ -void si_pmu_res_init(struct si_pub *sih) -{ - chipcregs_t *cc; - uint origidx; - u32 min_mask = 0, max_mask = 0; - - /* Remember original core before switch to chipc */ - origidx = ai_coreidx(sih); - cc = ai_setcoreidx(sih, SI_CC_IDX); - - /* Determine min/max rsrc masks */ - si_pmu_res_masks(sih, &min_mask, &max_mask); - - /* It is required to program max_mask first and then min_mask */ - - /* Program max resource mask */ - - if (max_mask) - W_REG(&cc->max_res_mask, max_mask); - - /* Program min resource mask */ - - if (min_mask) - W_REG(&cc->min_res_mask, min_mask); - - /* Add some delay; allow resources to come up and settle. */ - mdelay(2); - - /* Return to original core */ - ai_setcoreidx(sih, origidx); -} - -u32 si_pmu_measure_alpclk(struct si_pub *sih) -{ - chipcregs_t *cc; - uint origidx; - u32 alp_khz; - - if (sih->pmurev < 10) - return 0; - - /* Remember original core before switch to chipc */ - origidx = ai_coreidx(sih); - cc = ai_setcoreidx(sih, SI_CC_IDX); - - if (R_REG(&cc->pmustatus) & PST_EXTLPOAVAIL) { - u32 ilp_ctr, alp_hz; - - /* - * Enable the reg to measure the freq, - * in case it was disabled before - */ - W_REG(&cc->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 = - R_REG(&cc->pmu_xtalfreq) & PMU_XTALFREQ_REG_ILPCTR_MASK; - - /* - * Turn off the PMU_XTALFREQ_REG_MEASURE_SHIFT - * bit to save power - */ - W_REG(&cc->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 to original core */ - ai_setcoreidx(sih, origidx); - - return alp_khz; -} |