/*
   * Broadcom specific AMBA
   * ChipCommon Power Management Unit driver
   *

   * Copyright 2009, Michael Buesch <m@bues.ch>

   * Copyright 2007, 2011, Broadcom Corporation
   * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>

   *
   * Licensed under the GNU/GPL. See COPYING for details.
   */
  
  #include "bcma_private.h"

  #include <linux/export.h>

  #include <linux/bcma/bcma.h>

  u32 bcma_chipco_pll_read(struct bcma_drv_cc *cc, u32 offset)

  {

  	bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
  	bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_ADDR);
  	return bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_DATA);

  }

  EXPORT_SYMBOL_GPL(bcma_chipco_pll_read);

  void bcma_chipco_pll_write(struct bcma_drv_cc *cc, u32 offset, u32 value)

  {

  	bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
  	bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_ADDR);
  	bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, value);

  }
  EXPORT_SYMBOL_GPL(bcma_chipco_pll_write);

  void bcma_chipco_pll_maskset(struct bcma_drv_cc *cc, u32 offset, u32 mask,
  			     u32 set)
  {

  	bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
  	bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_ADDR);
  	bcma_pmu_maskset32(cc, BCMA_CC_PMU_PLLCTL_DATA, mask, set);

  }
  EXPORT_SYMBOL_GPL(bcma_chipco_pll_maskset);
  
  void bcma_chipco_chipctl_maskset(struct bcma_drv_cc *cc,
  				 u32 offset, u32 mask, u32 set)
  {

  	bcma_pmu_write32(cc, BCMA_CC_PMU_CHIPCTL_ADDR, offset);
  	bcma_pmu_read32(cc, BCMA_CC_PMU_CHIPCTL_ADDR);
  	bcma_pmu_maskset32(cc, BCMA_CC_PMU_CHIPCTL_DATA, mask, set);

  }
  EXPORT_SYMBOL_GPL(bcma_chipco_chipctl_maskset);
  
  void bcma_chipco_regctl_maskset(struct bcma_drv_cc *cc, u32 offset, u32 mask,
  				u32 set)
  {

  	bcma_pmu_write32(cc, BCMA_CC_PMU_REGCTL_ADDR, offset);
  	bcma_pmu_read32(cc, BCMA_CC_PMU_REGCTL_ADDR);
  	bcma_pmu_maskset32(cc, BCMA_CC_PMU_REGCTL_DATA, mask, set);

  }

  EXPORT_SYMBOL_GPL(bcma_chipco_regctl_maskset);

  static u32 bcma_pmu_xtalfreq(struct bcma_drv_cc *cc)
  {
  	u32 ilp_ctl, alp_hz;

  	if (!(bcma_pmu_read32(cc, BCMA_CC_PMU_STAT) &

  	      BCMA_CC_PMU_STAT_EXT_LPO_AVAIL))
  		return 0;

  	bcma_pmu_write32(cc, BCMA_CC_PMU_XTAL_FREQ,
  			 BIT(BCMA_CC_PMU_XTAL_FREQ_MEASURE_SHIFT));

  	usleep_range(1000, 2000);

  	ilp_ctl = bcma_pmu_read32(cc, BCMA_CC_PMU_XTAL_FREQ);

  	ilp_ctl &= BCMA_CC_PMU_XTAL_FREQ_ILPCTL_MASK;

  	bcma_pmu_write32(cc, BCMA_CC_PMU_XTAL_FREQ, 0);

  
  	alp_hz = ilp_ctl * 32768 / 4;
  	return (alp_hz + 50000) / 100000 * 100;
  }
  
  static void bcma_pmu2_pll_init0(struct bcma_drv_cc *cc, u32 xtalfreq)
  {
  	struct bcma_bus *bus = cc->core->bus;
  	u32 freq_tgt_target = 0, freq_tgt_current;
  	u32 pll0, mask;
  
  	switch (bus->chipinfo.id) {
  	case BCMA_CHIP_ID_BCM43142:
  		/* pmu2_xtaltab0_adfll_485 */
  		switch (xtalfreq) {
  		case 12000:
  			freq_tgt_target = 0x50D52;
  			break;
  		case 20000:
  			freq_tgt_target = 0x307FE;
  			break;
  		case 26000:
  			freq_tgt_target = 0x254EA;
  			break;
  		case 37400:
  			freq_tgt_target = 0x19EF8;
  			break;
  		case 52000:
  			freq_tgt_target = 0x12A75;
  			break;
  		}
  		break;
  	}
  
  	if (!freq_tgt_target) {
  		bcma_err(bus, "Unknown TGT frequency for xtalfreq %d
  ",
  			 xtalfreq);
  		return;
  	}
  
  	pll0 = bcma_chipco_pll_read(cc, BCMA_CC_PMU15_PLL_PLLCTL0);
  	freq_tgt_current = (pll0 & BCMA_CC_PMU15_PLL_PC0_FREQTGT_MASK) >>
  		BCMA_CC_PMU15_PLL_PC0_FREQTGT_SHIFT;
  
  	if (freq_tgt_current == freq_tgt_target) {
  		bcma_debug(bus, "Target TGT frequency already set
  ");
  		return;
  	}
  
  	/* Turn off PLL */
  	switch (bus->chipinfo.id) {
  	case BCMA_CHIP_ID_BCM43142:
  		mask = (u32)~(BCMA_RES_4314_HT_AVAIL |
  			      BCMA_RES_4314_MACPHY_CLK_AVAIL);

  		bcma_pmu_mask32(cc, BCMA_CC_PMU_MINRES_MSK, mask);
  		bcma_pmu_mask32(cc, BCMA_CC_PMU_MAXRES_MSK, mask);

  		bcma_wait_value(cc->core, BCMA_CLKCTLST,
  				BCMA_CLKCTLST_HAVEHT, 0, 20000);
  		break;
  	}
  
  	pll0 &= ~BCMA_CC_PMU15_PLL_PC0_FREQTGT_MASK;
  	pll0 |= freq_tgt_target << BCMA_CC_PMU15_PLL_PC0_FREQTGT_SHIFT;
  	bcma_chipco_pll_write(cc, BCMA_CC_PMU15_PLL_PLLCTL0, pll0);
  
  	/* Flush */
  	if (cc->pmu.rev >= 2)

  		bcma_pmu_set32(cc, BCMA_CC_PMU_CTL, BCMA_CC_PMU_CTL_PLL_UPD);

  
  	/* TODO: Do we need to update OTP? */
  }
  
  static void bcma_pmu_pll_init(struct bcma_drv_cc *cc)
  {
  	struct bcma_bus *bus = cc->core->bus;
  	u32 xtalfreq = bcma_pmu_xtalfreq(cc);
  
  	switch (bus->chipinfo.id) {
  	case BCMA_CHIP_ID_BCM43142:
  		if (xtalfreq == 0)
  			xtalfreq = 20000;
  		bcma_pmu2_pll_init0(cc, xtalfreq);
  		break;
  	}
  }

  static void bcma_pmu_resources_init(struct bcma_drv_cc *cc)
  {
  	struct bcma_bus *bus = cc->core->bus;
  	u32 min_msk = 0, max_msk = 0;
  
  	switch (bus->chipinfo.id) {

  	case BCMA_CHIP_ID_BCM4313:

  		min_msk = 0x200D;
  		max_msk = 0xFFFF;
  		break;

  	case BCMA_CHIP_ID_BCM43142:
  		min_msk = BCMA_RES_4314_LPLDO_PU |
  			  BCMA_RES_4314_PMU_SLEEP_DIS |
  			  BCMA_RES_4314_PMU_BG_PU |
  			  BCMA_RES_4314_CBUCK_LPOM_PU |
  			  BCMA_RES_4314_CBUCK_PFM_PU |
  			  BCMA_RES_4314_CLDO_PU |
  			  BCMA_RES_4314_LPLDO2_LVM |
  			  BCMA_RES_4314_WL_PMU_PU |
  			  BCMA_RES_4314_LDO3P3_PU |
  			  BCMA_RES_4314_OTP_PU |
  			  BCMA_RES_4314_WL_PWRSW_PU |
  			  BCMA_RES_4314_LQ_AVAIL |
  			  BCMA_RES_4314_LOGIC_RET |
  			  BCMA_RES_4314_MEM_SLEEP |
  			  BCMA_RES_4314_MACPHY_RET |
  			  BCMA_RES_4314_WL_CORE_READY;
  		max_msk = 0x3FFFFFFF;
  		break;

  	default:

  		bcma_debug(bus, "PMU resource config unknown or not needed for device 0x%04X
  ",
  			   bus->chipinfo.id);

  	}
  
  	/* Set the resource masks. */
  	if (min_msk)

  		bcma_pmu_write32(cc, BCMA_CC_PMU_MINRES_MSK, min_msk);

  	if (max_msk)

  		bcma_pmu_write32(cc, BCMA_CC_PMU_MAXRES_MSK, max_msk);

  	/*
  	 * Add some delay; allow resources to come up and settle.
  	 * Delay is required for SoC (early init).
  	 */

  	usleep_range(2000, 2500);

  }

  /* Disable to allow reading SPROM. Don't know the adventages of enabling it. */
  void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable)
  {
  	struct bcma_bus *bus = cc->core->bus;
  	u32 val;
  
  	val = bcma_cc_read32(cc, BCMA_CC_CHIPCTL);
  	if (enable) {
  		val |= BCMA_CHIPCTL_4331_EXTPA_EN;
  		if (bus->chipinfo.pkg == 9 || bus->chipinfo.pkg == 11)
  			val |= BCMA_CHIPCTL_4331_EXTPA_ON_GPIO2_5;

  		else if (bus->chipinfo.rev > 0)
  			val |= BCMA_CHIPCTL_4331_EXTPA_EN2;

  	} else {
  		val &= ~BCMA_CHIPCTL_4331_EXTPA_EN;

  		val &= ~BCMA_CHIPCTL_4331_EXTPA_EN2;

  		val &= ~BCMA_CHIPCTL_4331_EXTPA_ON_GPIO2_5;
  	}
  	bcma_cc_write32(cc, BCMA_CC_CHIPCTL, val);
  }

  static void bcma_pmu_workarounds(struct bcma_drv_cc *cc)

  {
  	struct bcma_bus *bus = cc->core->bus;
  
  	switch (bus->chipinfo.id) {

  	case BCMA_CHIP_ID_BCM4313:

  		/*
  		 * enable 12 mA drive strenth for 4313 and set chipControl
  		 * register bit 1
  		 */

  		bcma_chipco_chipctl_maskset(cc, 0,

  					    ~BCMA_CCTRL_4313_12MA_LED_DRIVE,

  					    BCMA_CCTRL_4313_12MA_LED_DRIVE);

  		break;

  	case BCMA_CHIP_ID_BCM4331:
  	case BCMA_CHIP_ID_BCM43431:

  		/* Ext PA lines must be enabled for tx on BCM4331 */
  		bcma_chipco_bcm4331_ext_pa_lines_ctl(cc, true);

  		break;

  	case BCMA_CHIP_ID_BCM43224:

  	case BCMA_CHIP_ID_BCM43421:

  		/*
  		 * enable 12 mA drive strenth for 43224 and set chipControl
  		 * register bit 15
  		 */

  		if (bus->chipinfo.rev == 0) {

  			bcma_cc_maskset32(cc, BCMA_CC_CHIPCTL,

  					  ~BCMA_CCTRL_43224_GPIO_TOGGLE,

  					  BCMA_CCTRL_43224_GPIO_TOGGLE);
  			bcma_chipco_chipctl_maskset(cc, 0,

  						    ~BCMA_CCTRL_43224A0_12MA_LED_DRIVE,

  						    BCMA_CCTRL_43224A0_12MA_LED_DRIVE);

  		} else {

  			bcma_chipco_chipctl_maskset(cc, 0,

  						    ~BCMA_CCTRL_43224B0_12MA_LED_DRIVE,

  						    BCMA_CCTRL_43224B0_12MA_LED_DRIVE);

  		}
  		break;
  	default:

  		bcma_debug(bus, "Workarounds unknown or not needed for device 0x%04X
  ",
  			   bus->chipinfo.id);

  	}
  }

  void bcma_pmu_early_init(struct bcma_drv_cc *cc)

  {

  	struct bcma_bus *bus = cc->core->bus;

  	u32 pmucap;

  	if (cc->core->id.rev >= 35 &&
  	    cc->capabilities_ext & BCMA_CC_CAP_EXT_AOB_PRESENT) {
  		cc->pmu.core = bcma_find_core(bus, BCMA_CORE_PMU);
  		if (!cc->pmu.core)
  			bcma_warn(bus, "Couldn't find expected PMU core");
  	}
  	if (!cc->pmu.core)
  		cc->pmu.core = cc->core;
  
  	pmucap = bcma_pmu_read32(cc, BCMA_CC_PMU_CAP);

  	cc->pmu.rev = (pmucap & BCMA_CC_PMU_CAP_REVISION);

  	bcma_debug(bus, "Found rev %u PMU (capabilities 0x%08X)
  ", cc->pmu.rev,
  		   pmucap);

  }

  void bcma_pmu_init(struct bcma_drv_cc *cc)
  {

  	if (cc->pmu.rev == 1)

  		bcma_pmu_mask32(cc, BCMA_CC_PMU_CTL,
  				~BCMA_CC_PMU_CTL_NOILPONW);

  	else

  		bcma_pmu_set32(cc, BCMA_CC_PMU_CTL,
  			       BCMA_CC_PMU_CTL_NOILPONW);

  	bcma_pmu_pll_init(cc);

  	bcma_pmu_resources_init(cc);

  	bcma_pmu_workarounds(cc);
  }

  u32 bcma_pmu_get_alp_clock(struct bcma_drv_cc *cc)

  {
  	struct bcma_bus *bus = cc->core->bus;
  
  	switch (bus->chipinfo.id) {

  	case BCMA_CHIP_ID_BCM4313:
  	case BCMA_CHIP_ID_BCM43224:
  	case BCMA_CHIP_ID_BCM43225:
  	case BCMA_CHIP_ID_BCM43227:
  	case BCMA_CHIP_ID_BCM43228:
  	case BCMA_CHIP_ID_BCM4331:
  	case BCMA_CHIP_ID_BCM43421:
  	case BCMA_CHIP_ID_BCM43428:
  	case BCMA_CHIP_ID_BCM43431:

  	case BCMA_CHIP_ID_BCM4716:

  	case BCMA_CHIP_ID_BCM47162:

  	case BCMA_CHIP_ID_BCM4748:

  	case BCMA_CHIP_ID_BCM4749:

  	case BCMA_CHIP_ID_BCM5357:

  	case BCMA_CHIP_ID_BCM53572:

  	case BCMA_CHIP_ID_BCM6362:

  		/* always 20Mhz */
  		return 20000 * 1000;

  	case BCMA_CHIP_ID_BCM4706:

  	case BCMA_CHIP_ID_BCM5356:

  		/* always 25Mhz */
  		return 25000 * 1000;

  	case BCMA_CHIP_ID_BCM43460:
  	case BCMA_CHIP_ID_BCM4352:
  	case BCMA_CHIP_ID_BCM4360:
  		if (cc->status & BCMA_CC_CHIPST_4360_XTAL_40MZ)
  			return 40000 * 1000;
  		else
  			return 20000 * 1000;

  	default:

  		bcma_warn(bus, "No ALP clock specified for %04X device, pmu rev. %d, using default %d Hz
  ",
  			  bus->chipinfo.id, cc->pmu.rev, BCMA_CC_PMU_ALP_CLOCK);

  	}
  	return BCMA_CC_PMU_ALP_CLOCK;
  }

  
  /* Find the output of the "m" pll divider given pll controls that start with
   * pllreg "pll0" i.e. 12 for main 6 for phy, 0 for misc.
   */

  static u32 bcma_pmu_pll_clock(struct bcma_drv_cc *cc, u32 pll0, u32 m)

  {
  	u32 tmp, div, ndiv, p1, p2, fc;
  	struct bcma_bus *bus = cc->core->bus;
  
  	BUG_ON((pll0 & 3) || (pll0 > BCMA_CC_PMU4716_MAINPLL_PLL0));
  
  	BUG_ON(!m || m > 4);

  	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 ||
  	    bus->chipinfo.id == BCMA_CHIP_ID_BCM4749) {

  		/* Detect failure in clock setting */
  		tmp = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
  		if (tmp & 0x40000)
  			return 133 * 1000000;
  	}
  
  	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_P1P2_OFF);
  	p1 = (tmp & BCMA_CC_PPL_P1_MASK) >> BCMA_CC_PPL_P1_SHIFT;
  	p2 = (tmp & BCMA_CC_PPL_P2_MASK) >> BCMA_CC_PPL_P2_SHIFT;
  
  	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_M14_OFF);
  	div = (tmp >> ((m - 1) * BCMA_CC_PPL_MDIV_WIDTH)) &
  		BCMA_CC_PPL_MDIV_MASK;
  
  	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_NM5_OFF);
  	ndiv = (tmp & BCMA_CC_PPL_NDIV_MASK) >> BCMA_CC_PPL_NDIV_SHIFT;
  
  	/* Do calculation in Mhz */

  	fc = bcma_pmu_get_alp_clock(cc) / 1000000;

  	fc = (p1 * ndiv * fc) / p2;
  
  	/* Return clock in Hertz */
  	return (fc / div) * 1000000;
  }

  static u32 bcma_pmu_pll_clock_bcm4706(struct bcma_drv_cc *cc, u32 pll0, u32 m)

  {
  	u32 tmp, ndiv, p1div, p2div;
  	u32 clock;
  
  	BUG_ON(!m || m > 4);
  
  	/* Get N, P1 and P2 dividers to determine CPU clock */
  	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PMU6_4706_PROCPLL_OFF);
  	ndiv = (tmp & BCMA_CC_PMU6_4706_PROC_NDIV_INT_MASK)
  		>> BCMA_CC_PMU6_4706_PROC_NDIV_INT_SHIFT;
  	p1div = (tmp & BCMA_CC_PMU6_4706_PROC_P1DIV_MASK)
  		>> BCMA_CC_PMU6_4706_PROC_P1DIV_SHIFT;
  	p2div = (tmp & BCMA_CC_PMU6_4706_PROC_P2DIV_MASK)
  		>> BCMA_CC_PMU6_4706_PROC_P2DIV_SHIFT;
  
  	tmp = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
  	if (tmp & BCMA_CC_CHIPST_4706_PKG_OPTION)
  		/* Low cost bonding: Fixed reference clock 25MHz and m = 4 */
  		clock = (25000000 / 4) * ndiv * p2div / p1div;
  	else
  		/* Fixed reference clock 25MHz and m = 2 */
  		clock = (25000000 / 2) * ndiv * p2div / p1div;
  
  	if (m == BCMA_CC_PMU5_MAINPLL_SSB)
  		clock = clock / 4;
  
  	return clock;
  }

  /* query bus clock frequency for PMU-enabled chipcommon */

  u32 bcma_pmu_get_bus_clock(struct bcma_drv_cc *cc)

  {
  	struct bcma_bus *bus = cc->core->bus;
  
  	switch (bus->chipinfo.id) {

  	case BCMA_CHIP_ID_BCM4716:
  	case BCMA_CHIP_ID_BCM4748:
  	case BCMA_CHIP_ID_BCM47162:

  		return bcma_pmu_pll_clock(cc, BCMA_CC_PMU4716_MAINPLL_PLL0,
  					  BCMA_CC_PMU5_MAINPLL_SSB);

  	case BCMA_CHIP_ID_BCM5356:

  		return bcma_pmu_pll_clock(cc, BCMA_CC_PMU5356_MAINPLL_PLL0,
  					  BCMA_CC_PMU5_MAINPLL_SSB);

  	case BCMA_CHIP_ID_BCM5357:
  	case BCMA_CHIP_ID_BCM4749:

  		return bcma_pmu_pll_clock(cc, BCMA_CC_PMU5357_MAINPLL_PLL0,
  					  BCMA_CC_PMU5_MAINPLL_SSB);

  	case BCMA_CHIP_ID_BCM4706:

  		return bcma_pmu_pll_clock_bcm4706(cc,
  						  BCMA_CC_PMU4706_MAINPLL_PLL0,
  						  BCMA_CC_PMU5_MAINPLL_SSB);

  	case BCMA_CHIP_ID_BCM53572:

  		return 75000000;
  	default:

  		bcma_warn(bus, "No bus clock specified for %04X device, pmu rev. %d, using default %d Hz
  ",

  			  bus->chipinfo.id, cc->pmu.rev, BCMA_CC_PMU_HT_CLOCK);

  	}
  	return BCMA_CC_PMU_HT_CLOCK;
  }

  EXPORT_SYMBOL_GPL(bcma_pmu_get_bus_clock);

  
  /* query cpu clock frequency for PMU-enabled chipcommon */

  u32 bcma_pmu_get_cpu_clock(struct bcma_drv_cc *cc)

  {
  	struct bcma_bus *bus = cc->core->bus;

  	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM53572)

  		return 300000000;

  	/* New PMUs can have different clock for bus and CPU */

  	if (cc->pmu.rev >= 5) {
  		u32 pll;
  		switch (bus->chipinfo.id) {

  		case BCMA_CHIP_ID_BCM4706:

  			return bcma_pmu_pll_clock_bcm4706(cc,

  						BCMA_CC_PMU4706_MAINPLL_PLL0,
  						BCMA_CC_PMU5_MAINPLL_CPU);

  		case BCMA_CHIP_ID_BCM5356:

  			pll = BCMA_CC_PMU5356_MAINPLL_PLL0;
  			break;

  		case BCMA_CHIP_ID_BCM5357:
  		case BCMA_CHIP_ID_BCM4749:

  			pll = BCMA_CC_PMU5357_MAINPLL_PLL0;
  			break;
  		default:
  			pll = BCMA_CC_PMU4716_MAINPLL_PLL0;
  			break;
  		}

  		return bcma_pmu_pll_clock(cc, pll, BCMA_CC_PMU5_MAINPLL_CPU);

  	}

  	/* On old PMUs CPU has the same clock as the bus */
  	return bcma_pmu_get_bus_clock(cc);

  }

  
  static void bcma_pmu_spuravoid_pll_write(struct bcma_drv_cc *cc, u32 offset,
  					 u32 value)
  {

  	bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
  	bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, value);

  }
  
  void bcma_pmu_spuravoid_pllupdate(struct bcma_drv_cc *cc, int spuravoid)
  {
  	u32 tmp = 0;
  	u8 phypll_offset = 0;
  	u8 bcm5357_bcm43236_p1div[] = {0x1, 0x5, 0x5};
  	u8 bcm5357_bcm43236_ndiv[] = {0x30, 0xf6, 0xfc};
  	struct bcma_bus *bus = cc->core->bus;
  
  	switch (bus->chipinfo.id) {
  	case BCMA_CHIP_ID_BCM5357:
  	case BCMA_CHIP_ID_BCM4749:
  	case BCMA_CHIP_ID_BCM53572:
  		/* 5357[ab]0, 43236[ab]0, and 6362b0 */

  		/*
  		 * BCM5357 needs to touch PLL1_PLLCTL[02],
  		 * so offset PLL0_PLLCTL[02] by 6
  		 */

  		phypll_offset = (bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 ||
  		       bus->chipinfo.id == BCMA_CHIP_ID_BCM4749 ||
  		       bus->chipinfo.id == BCMA_CHIP_ID_BCM53572) ? 6 : 0;
  
  		/* RMW only the P1 divider */

  		bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR,

  				BCMA_CC_PMU_PLL_CTL0 + phypll_offset);

  		tmp = bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_DATA);

  		tmp &= (~(BCMA_CC_PMU1_PLL0_PC0_P1DIV_MASK));
  		tmp |= (bcm5357_bcm43236_p1div[spuravoid] << BCMA_CC_PMU1_PLL0_PC0_P1DIV_SHIFT);

  		bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, tmp);

  
  		/* RMW only the int feedback divider */

  		bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR,

  				BCMA_CC_PMU_PLL_CTL2 + phypll_offset);

  		tmp = bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_DATA);

  		tmp &= ~(BCMA_CC_PMU1_PLL0_PC2_NDIV_INT_MASK);
  		tmp |= (bcm5357_bcm43236_ndiv[spuravoid]) << BCMA_CC_PMU1_PLL0_PC2_NDIV_INT_SHIFT;

  		bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, tmp);

  		tmp = BCMA_CC_PMU_CTL_PLL_UPD;

  		break;
  
  	case BCMA_CHIP_ID_BCM4331:
  	case BCMA_CHIP_ID_BCM43431:
  		if (spuravoid == 2) {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11500014);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x0FC00a08);
  		} else if (spuravoid == 1) {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11500014);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x0F600a08);
  		} else {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11100014);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x03000a08);
  		}

  		tmp = BCMA_CC_PMU_CTL_PLL_UPD;

  		break;
  
  	case BCMA_CHIP_ID_BCM43224:
  	case BCMA_CHIP_ID_BCM43225:
  	case BCMA_CHIP_ID_BCM43421:
  		if (spuravoid == 1) {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11500010);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
  						     0x000C0C06);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x0F600a08);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
  						     0x00000000);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
  						     0x2001E920);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
  						     0x88888815);
  		} else {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11100010);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
  						     0x000c0c06);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x03000a08);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
  						     0x00000000);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
  						     0x200005c0);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
  						     0x88888815);
  		}

  		tmp = BCMA_CC_PMU_CTL_PLL_UPD;

  		break;
  
  	case BCMA_CHIP_ID_BCM4716:
  	case BCMA_CHIP_ID_BCM4748:
  	case BCMA_CHIP_ID_BCM47162:
  		if (spuravoid == 1) {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11500060);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
  						     0x080C0C06);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x0F600000);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
  						     0x00000000);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
  						     0x2001E924);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
  						     0x88888815);
  		} else {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11100060);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
  						     0x080c0c06);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x03000000);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
  						     0x00000000);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
  						     0x200005c0);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
  						     0x88888815);
  		}

  		tmp = BCMA_CC_PMU_CTL_PLL_UPD | BCMA_CC_PMU_CTL_NOILPONW;

  		break;

  	case BCMA_CHIP_ID_BCM43131:

  	case BCMA_CHIP_ID_BCM43217:

  	case BCMA_CHIP_ID_BCM43227:
  	case BCMA_CHIP_ID_BCM43228:
  	case BCMA_CHIP_ID_BCM43428:
  		/* LCNXN */

  		/*
  		 * PLL Settings for spur avoidance on/off mode,
  		 * no on2 support for 43228A0
  		 */

  		if (spuravoid == 1) {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x01100014);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
  						     0x040C0C06);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x03140A08);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
  						     0x00333333);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
  						     0x202C2820);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
  						     0x88888815);
  		} else {
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
  						     0x11100014);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
  						     0x040c0c06);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
  						     0x03000a08);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
  						     0x00000000);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
  						     0x200005c0);
  			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
  						     0x88888815);
  		}

  		tmp = BCMA_CC_PMU_CTL_PLL_UPD;

  		break;
  	default:

  		bcma_err(bus, "Unknown spuravoidance settings for chip 0x%04X, not changing PLL
  ",
  			 bus->chipinfo.id);

  		break;
  	}

  	tmp |= bcma_pmu_read32(cc, BCMA_CC_PMU_CTL);
  	bcma_pmu_write32(cc, BCMA_CC_PMU_CTL, tmp);

  }
  EXPORT_SYMBOL_GPL(bcma_pmu_spuravoid_pllupdate);