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path: root/drivers/net/wireless/bcm43xx/bcm43xx_power.c
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Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_power.c')
-rw-r--r--drivers/net/wireless/bcm43xx/bcm43xx_power.c393
1 files changed, 0 insertions, 393 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_power.c b/drivers/net/wireless/bcm43xx/bcm43xx_power.c
deleted file mode 100644
index 7e774f41095..00000000000
--- a/drivers/net/wireless/bcm43xx/bcm43xx_power.c
+++ /dev/null
@@ -1,393 +0,0 @@
-/*
-
- Broadcom BCM43xx wireless driver
-
- Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
- Stefano Brivio <st3@riseup.net>
- Michael Buesch <mbuesch@freenet.de>
- Danny van Dyk <kugelfang@gentoo.org>
- Andreas Jaggi <andreas.jaggi@waterwave.ch>
-
- Some parts of the code in this file are derived from the ipw2200
- driver Copyright(c) 2003 - 2004 Intel Corporation.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
- Boston, MA 02110-1301, USA.
-
-*/
-
-#include <linux/delay.h>
-
-#include "bcm43xx.h"
-#include "bcm43xx_power.h"
-#include "bcm43xx_main.h"
-
-
-/* Get the Slow Clock Source */
-static int bcm43xx_pctl_get_slowclksrc(struct bcm43xx_private *bcm)
-{
- u32 tmp;
- int err;
-
- assert(bcm->current_core == &bcm->core_chipcommon);
- if (bcm->current_core->rev < 6) {
- if (bcm->bustype == BCM43xx_BUSTYPE_PCMCIA ||
- bcm->bustype == BCM43xx_BUSTYPE_SB)
- return BCM43xx_PCTL_CLKSRC_XTALOS;
- if (bcm->bustype == BCM43xx_BUSTYPE_PCI) {
- err = bcm43xx_pci_read_config32(bcm, BCM43xx_PCTL_OUT, &tmp);
- assert(!err);
- if (tmp & 0x10)
- return BCM43xx_PCTL_CLKSRC_PCI;
- return BCM43xx_PCTL_CLKSRC_XTALOS;
- }
- }
- if (bcm->current_core->rev < 10) {
- tmp = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL);
- tmp &= 0x7;
- if (tmp == 0)
- return BCM43xx_PCTL_CLKSRC_LOPWROS;
- if (tmp == 1)
- return BCM43xx_PCTL_CLKSRC_XTALOS;
- if (tmp == 2)
- return BCM43xx_PCTL_CLKSRC_PCI;
- }
-
- return BCM43xx_PCTL_CLKSRC_XTALOS;
-}
-
-/* Get max/min slowclock frequency
- * as described in http://bcm-specs.sipsolutions.net/PowerControl
- */
-static int bcm43xx_pctl_clockfreqlimit(struct bcm43xx_private *bcm,
- int get_max)
-{
- int limit;
- int clocksrc;
- int divisor;
- u32 tmp;
-
- assert(bcm->chipcommon_capabilities & BCM43xx_CAPABILITIES_PCTL);
- assert(bcm->current_core == &bcm->core_chipcommon);
-
- clocksrc = bcm43xx_pctl_get_slowclksrc(bcm);
- if (bcm->current_core->rev < 6) {
- switch (clocksrc) {
- case BCM43xx_PCTL_CLKSRC_PCI:
- divisor = 64;
- break;
- case BCM43xx_PCTL_CLKSRC_XTALOS:
- divisor = 32;
- break;
- default:
- assert(0);
- divisor = 1;
- }
- } else if (bcm->current_core->rev < 10) {
- switch (clocksrc) {
- case BCM43xx_PCTL_CLKSRC_LOPWROS:
- divisor = 1;
- break;
- case BCM43xx_PCTL_CLKSRC_XTALOS:
- case BCM43xx_PCTL_CLKSRC_PCI:
- tmp = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL);
- divisor = ((tmp & 0xFFFF0000) >> 16) + 1;
- divisor *= 4;
- break;
- default:
- assert(0);
- divisor = 1;
- }
- } else {
- tmp = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_SYSCLKCTL);
- divisor = ((tmp & 0xFFFF0000) >> 16) + 1;
- divisor *= 4;
- }
-
- switch (clocksrc) {
- case BCM43xx_PCTL_CLKSRC_LOPWROS:
- if (get_max)
- limit = 43000;
- else
- limit = 25000;
- break;
- case BCM43xx_PCTL_CLKSRC_XTALOS:
- if (get_max)
- limit = 20200000;
- else
- limit = 19800000;
- break;
- case BCM43xx_PCTL_CLKSRC_PCI:
- if (get_max)
- limit = 34000000;
- else
- limit = 25000000;
- break;
- default:
- assert(0);
- limit = 0;
- }
- limit /= divisor;
-
- return limit;
-}
-
-
-/* init power control
- * as described in http://bcm-specs.sipsolutions.net/PowerControl
- */
-int bcm43xx_pctl_init(struct bcm43xx_private *bcm)
-{
- int err, maxfreq;
- struct bcm43xx_coreinfo *old_core;
-
- old_core = bcm->current_core;
- err = bcm43xx_switch_core(bcm, &bcm->core_chipcommon);
- if (err == -ENODEV)
- return 0;
- if (err)
- goto out;
-
- if (bcm->chip_id == 0x4321) {
- if (bcm->chip_rev == 0)
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_CTL, 0x03A4);
- if (bcm->chip_rev == 1)
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_CTL, 0x00A4);
- }
-
- if (bcm->chipcommon_capabilities & BCM43xx_CAPABILITIES_PCTL) {
- if (bcm->current_core->rev >= 10) {
- /* Set Idle Power clock rate to 1Mhz */
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_SYSCLKCTL,
- (bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_SYSCLKCTL)
- & 0x0000FFFF) | 0x40000);
- } else {
- maxfreq = bcm43xx_pctl_clockfreqlimit(bcm, 1);
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_PLLONDELAY,
- (maxfreq * 150 + 999999) / 1000000);
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_FREFSELDELAY,
- (maxfreq * 15 + 999999) / 1000000);
- }
- }
-
- err = bcm43xx_switch_core(bcm, old_core);
- assert(err == 0);
-
-out:
- return err;
-}
-
-u16 bcm43xx_pctl_powerup_delay(struct bcm43xx_private *bcm)
-{
- u16 delay = 0;
- int err;
- u32 pll_on_delay;
- struct bcm43xx_coreinfo *old_core;
- int minfreq;
-
- if (bcm->bustype != BCM43xx_BUSTYPE_PCI)
- goto out;
- if (!(bcm->chipcommon_capabilities & BCM43xx_CAPABILITIES_PCTL))
- goto out;
- old_core = bcm->current_core;
- err = bcm43xx_switch_core(bcm, &bcm->core_chipcommon);
- if (err == -ENODEV)
- goto out;
-
- minfreq = bcm43xx_pctl_clockfreqlimit(bcm, 0);
- pll_on_delay = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_PLLONDELAY);
- delay = (((pll_on_delay + 2) * 1000000) + (minfreq - 1)) / minfreq;
-
- err = bcm43xx_switch_core(bcm, old_core);
- assert(err == 0);
-
-out:
- return delay;
-}
-
-/* set the powercontrol clock
- * as described in http://bcm-specs.sipsolutions.net/PowerControl
- */
-int bcm43xx_pctl_set_clock(struct bcm43xx_private *bcm, u16 mode)
-{
- int err;
- struct bcm43xx_coreinfo *old_core;
- u32 tmp;
-
- old_core = bcm->current_core;
- err = bcm43xx_switch_core(bcm, &bcm->core_chipcommon);
- if (err == -ENODEV)
- return 0;
- if (err)
- goto out;
-
- if (bcm->core_chipcommon.rev < 6) {
- if (mode == BCM43xx_PCTL_CLK_FAST) {
- err = bcm43xx_pctl_set_crystal(bcm, 1);
- if (err)
- goto out;
- }
- } else {
- if ((bcm->chipcommon_capabilities & BCM43xx_CAPABILITIES_PCTL) &&
- (bcm->core_chipcommon.rev < 10)) {
- switch (mode) {
- case BCM43xx_PCTL_CLK_FAST:
- tmp = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL);
- tmp = (tmp & ~BCM43xx_PCTL_FORCE_SLOW) | BCM43xx_PCTL_FORCE_PLL;
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL, tmp);
- break;
- case BCM43xx_PCTL_CLK_SLOW:
- tmp = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL);
- tmp |= BCM43xx_PCTL_FORCE_SLOW;
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL, tmp);
- break;
- case BCM43xx_PCTL_CLK_DYNAMIC:
- tmp = bcm43xx_read32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL);
- tmp &= ~BCM43xx_PCTL_FORCE_SLOW;
- tmp |= BCM43xx_PCTL_FORCE_PLL;
- tmp &= ~BCM43xx_PCTL_DYN_XTAL;
- bcm43xx_write32(bcm, BCM43xx_CHIPCOMMON_SLOWCLKCTL, tmp);
- }
- }
- }
-
- err = bcm43xx_switch_core(bcm, old_core);
- assert(err == 0);
-
-out:
- return err;
-}
-
-int bcm43xx_pctl_set_crystal(struct bcm43xx_private *bcm, int on)
-{
- int err;
- u32 in, out, outenable;
-
- err = bcm43xx_pci_read_config32(bcm, BCM43xx_PCTL_IN, &in);
- if (err)
- goto err_pci;
- err = bcm43xx_pci_read_config32(bcm, BCM43xx_PCTL_OUT, &out);
- if (err)
- goto err_pci;
- err = bcm43xx_pci_read_config32(bcm, BCM43xx_PCTL_OUTENABLE, &outenable);
- if (err)
- goto err_pci;
-
- outenable |= (BCM43xx_PCTL_XTAL_POWERUP | BCM43xx_PCTL_PLL_POWERDOWN);
-
- if (on) {
- if (in & 0x40)
- return 0;
-
- out |= (BCM43xx_PCTL_XTAL_POWERUP | BCM43xx_PCTL_PLL_POWERDOWN);
-
- err = bcm43xx_pci_write_config32(bcm, BCM43xx_PCTL_OUT, out);
- if (err)
- goto err_pci;
- err = bcm43xx_pci_write_config32(bcm, BCM43xx_PCTL_OUTENABLE, outenable);
- if (err)
- goto err_pci;
- udelay(1000);
-
- out &= ~BCM43xx_PCTL_PLL_POWERDOWN;
- err = bcm43xx_pci_write_config32(bcm, BCM43xx_PCTL_OUT, out);
- if (err)
- goto err_pci;
- udelay(5000);
- } else {
- if (bcm->current_core->rev < 5)
- return 0;
- if (bcm->sprom.boardflags & BCM43xx_BFL_XTAL_NOSLOW)
- return 0;
-
-/* XXX: Why BCM43xx_MMIO_RADIO_HWENABLED_xx can't be read at this time?
- * err = bcm43xx_switch_core(bcm, bcm->active_80211_core);
- * if (err)
- * return err;
- * if (((bcm->current_core->rev >= 3) &&
- * (bcm43xx_read32(bcm, BCM43xx_MMIO_RADIO_HWENABLED_HI) & (1 << 16))) ||
- * ((bcm->current_core->rev < 3) &&
- * !(bcm43xx_read16(bcm, BCM43xx_MMIO_RADIO_HWENABLED_LO) & (1 << 4))))
- * return 0;
- * err = bcm43xx_switch_core(bcm, &bcm->core_chipcommon);
- * if (err)
- * return err;
- */
-
- err = bcm43xx_pctl_set_clock(bcm, BCM43xx_PCTL_CLK_SLOW);
- if (err)
- goto out;
- out &= ~BCM43xx_PCTL_XTAL_POWERUP;
- out |= BCM43xx_PCTL_PLL_POWERDOWN;
- err = bcm43xx_pci_write_config32(bcm, BCM43xx_PCTL_OUT, out);
- if (err)
- goto err_pci;
- err = bcm43xx_pci_write_config32(bcm, BCM43xx_PCTL_OUTENABLE, outenable);
- if (err)
- goto err_pci;
- }
-
-out:
- return err;
-
-err_pci:
- printk(KERN_ERR PFX "Error: pctl_set_clock() could not access PCI config space!\n");
- err = -EBUSY;
- goto out;
-}
-
-/* Set the PowerSavingControlBits.
- * Bitvalues:
- * 0 => unset the bit
- * 1 => set the bit
- * -1 => calculate the bit
- */
-void bcm43xx_power_saving_ctl_bits(struct bcm43xx_private *bcm,
- int bit25, int bit26)
-{
- int i;
- u32 status;
-
-//FIXME: Force 25 to off and 26 to on for now:
-bit25 = 0;
-bit26 = 1;
-
- if (bit25 == -1) {
- //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
- // and thus is not an AP and we are associated, set bit 25
- }
- if (bit26 == -1) {
- //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
- // or we are associated, or FIXME, or the latest PS-Poll packet sent was
- // successful, set bit26
- }
- status = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
- if (bit25)
- status |= BCM43xx_SBF_PS1;
- else
- status &= ~BCM43xx_SBF_PS1;
- if (bit26)
- status |= BCM43xx_SBF_PS2;
- else
- status &= ~BCM43xx_SBF_PS2;
- bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, status);
- if (bit26 && bcm->current_core->rev >= 5) {
- for (i = 0; i < 100; i++) {
- if (bcm43xx_shm_read32(bcm, BCM43xx_SHM_SHARED, 0x0040) != 4)
- break;
- udelay(10);
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 17:07:03 +0000