diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/ps.c')
-rw-r--r-- | drivers/net/wireless/wl12xx/ps.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/drivers/net/wireless/wl12xx/ps.c b/drivers/net/wireless/wl12xx/ps.c deleted file mode 100644 index f28f194ca6fb..000000000000 --- a/drivers/net/wireless/wl12xx/ps.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * This file is part of wl12xx - * - * Copyright (C) 2008 Nokia Corporation - * - * Contact: Kalle Valo <kalle.valo@nokia.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * 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; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - * - */ - -#include "reg.h" -#include "ps.h" -#include "spi.h" - -#define WL12XX_WAKEUP_TIMEOUT 2000 - -/* Routines to toggle sleep mode while in ELP */ -void wl12xx_ps_elp_sleep(struct wl12xx *wl) -{ - if (wl->elp || !wl->psm) - return; - - wl12xx_debug(DEBUG_PSM, "chip to elp"); - - wl12xx_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, ELPCTRL_SLEEP); - - wl->elp = true; -} - -int wl12xx_ps_elp_wakeup(struct wl12xx *wl) -{ - unsigned long timeout; - u32 elp_reg; - - if (!wl->elp) - return 0; - - wl12xx_debug(DEBUG_PSM, "waking up chip from elp"); - - timeout = jiffies + msecs_to_jiffies(WL12XX_WAKEUP_TIMEOUT); - - wl12xx_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, ELPCTRL_WAKE_UP); - - elp_reg = wl12xx_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); - - /* - * FIXME: we should wait for irq from chip but, as a temporary - * solution to simplify locking, let's poll instead - */ - while (!(elp_reg & ELPCTRL_WLAN_READY)) { - if (time_after(jiffies, timeout)) { - wl12xx_error("elp wakeup timeout"); - return -ETIMEDOUT; - } - msleep(1); - elp_reg = wl12xx_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); - } - - wl12xx_debug(DEBUG_PSM, "wakeup time: %u ms", - jiffies_to_msecs(jiffies) - - (jiffies_to_msecs(timeout) - WL12XX_WAKEUP_TIMEOUT)); - - wl->elp = false; - - return 0; -} - -static int wl12xx_ps_set_elp(struct wl12xx *wl, bool enable) -{ - int ret; - - if (enable) { - wl12xx_debug(DEBUG_PSM, "sleep auth psm/elp"); - - ret = wl12xx_acx_sleep_auth(wl, WL12XX_PSM_ELP); - if (ret < 0) - return ret; - - wl12xx_ps_elp_sleep(wl); - } else { - wl12xx_debug(DEBUG_PSM, "sleep auth cam"); - - /* - * When the target is in ELP, we can only - * access the ELP control register. Thus, - * we have to wake the target up before - * changing the power authorization. - */ - - wl12xx_ps_elp_wakeup(wl); - - ret = wl12xx_acx_sleep_auth(wl, WL12XX_PSM_CAM); - if (ret < 0) - return ret; - } - - return 0; -} - -int wl12xx_ps_set_mode(struct wl12xx *wl, enum wl12xx_cmd_ps_mode mode) -{ - int ret; - - switch (mode) { - case STATION_POWER_SAVE_MODE: - wl12xx_debug(DEBUG_PSM, "entering psm"); - ret = wl12xx_cmd_ps_mode(wl, STATION_POWER_SAVE_MODE); - if (ret < 0) - return ret; - - ret = wl12xx_ps_set_elp(wl, true); - if (ret < 0) - return ret; - - wl->psm = 1; - break; - case STATION_ACTIVE_MODE: - default: - wl12xx_debug(DEBUG_PSM, "leaving psm"); - ret = wl12xx_ps_set_elp(wl, false); - if (ret < 0) - return ret; - - ret = wl12xx_cmd_ps_mode(wl, STATION_ACTIVE_MODE); - if (ret < 0) - return ret; - - wl->psm = 0; - break; - } - - return ret; -} - |