#include "iwl-power.h"
/*
- * Setting power level allow the card to go to sleep when not busy
- * there are three factor that decide the power level to go to, they
- * are list here with its priority
- * 1- critical_power_setting this will be set according to card temperature.
- * 2- system_power_setting this will be set by system PM manager.
- * 3- user_power_setting this will be set by user either by writing to sys or
- * mac80211
+ * Setting power level allow the card to go to sleep when not busy.
*
- * if system_power_setting and user_power_setting is set to auto
- * the power level will be decided according to association status and battery
- * status.
+ * The power level is set to INDEX_1 (the least deep state) by
+ * default, and will, in the future, be the deepest state unless
+ * otherwise required by pm_qos network latency requirements.
*
+ * Using INDEX_1 without pm_qos is ok because mac80211 will disable
+ * PS when even checking every beacon for the TIM bit would exceed
+ * the required latency.
*/
-#define MSEC_TO_USEC 1024
#define IWL_POWER_RANGE_0_MAX (2)
#define IWL_POWER_RANGE_1_MAX (10)
-
-#define IWL_POWER_ON_BATTERY IWL_POWER_INDEX_5
-#define IWL_POWER_ON_AC_DISASSOC IWL_POWER_MODE_CAM
-#define IWL_POWER_ON_AC_ASSOC IWL_POWER_MODE_CAM
-
-
-#define IWL_CT_KILL_TEMPERATURE 110
-#define IWL_MIN_POWER_TEMPERATURE 100
-#define IWL_REDUCED_POWER_TEMPERATURE 95
-
+#define NOSLP cpu_to_le16(0), 0, 0
+#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
+#define TU_TO_USEC 1024
+#define SLP_TOUT(T) cpu_to_le32((T) * TU_TO_USEC)
+#define SLP_VEC(X0, X1, X2, X3, X4) {cpu_to_le32(X0), \
+ cpu_to_le32(X1), \
+ cpu_to_le32(X2), \
+ cpu_to_le32(X3), \
+ cpu_to_le32(X4)}
/* default power management (not Tx power) table values */
-/* for TIM 0-10 */
-static struct iwl_power_vec_entry range_0[IWL_POWER_MAX] = {
+/* for DTIM period 0 through IWL_POWER_RANGE_0_MAX */
+static const struct iwl_power_vec_entry range_0[IWL_POWER_NUM] = {
{{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
{{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0},
{{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0},
};
-/* for TIM = 3-10 */
-static struct iwl_power_vec_entry range_1[IWL_POWER_MAX] = {
+/* for DTIM period IWL_POWER_RANGE_0_MAX + 1 through IWL_POWER_RANGE_1_MAX */
+static const struct iwl_power_vec_entry range_1[IWL_POWER_NUM] = {
{{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
{{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
{{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 3, 4, 7)}, 0},
{{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 4, 7, 10, 10)}, 2}
};
-/* for TIM > 11 */
-static struct iwl_power_vec_entry range_2[IWL_POWER_MAX] = {
+/* for DTIM period > IWL_POWER_RANGE_1_MAX */
+static const struct iwl_power_vec_entry range_2[IWL_POWER_NUM] = {
{{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
{{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
{{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
return iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
sizeof(struct iwl_powertable_cmd), cmd);
}
-/* decide the right power level according to association status
- * and battery status
- */
-static u16 iwl_get_auto_power_mode(struct iwl_priv *priv)
-{
- u16 mode;
-
- switch (priv->power_data.user_power_setting) {
- case IWL_POWER_AUTO:
- /* if running on battery */
- if (priv->power_data.is_battery_active)
- mode = IWL_POWER_ON_BATTERY;
- else if (iwl_is_associated(priv))
- mode = IWL_POWER_ON_AC_ASSOC;
- else
- mode = IWL_POWER_ON_AC_DISASSOC;
- break;
- default:
- mode = priv->power_data.user_power_setting;
- break;
- }
- return mode;
-}
/* initialize to default */
static void iwl_power_init_handle(struct iwl_priv *priv)
{
struct iwl_power_mgr *pow_data;
- int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_MAX;
+ int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_NUM;
struct iwl_powertable_cmd *cmd;
int i;
u16 lctl;
IWL_DEBUG_POWER(priv, "adjust power command flags\n");
- for (i = 0; i < IWL_POWER_MAX; i++) {
+ for (i = 0; i < IWL_POWER_NUM; i++) {
cmd = &pow_data->pwr_range_0[i].cmd;
if (lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN)
update_chains = priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE ||
priv->chain_noise_data.state == IWL_CHAIN_NOISE_ALIVE;
- /* If on battery, set to 3,
- * if plugged into AC power, set to CAM ("continuously aware mode"),
- * else user level */
-
- switch (setting->system_power_setting) {
- case IWL_POWER_SYS_AUTO:
- final_mode = iwl_get_auto_power_mode(priv);
- break;
- case IWL_POWER_SYS_BATTERY:
- final_mode = IWL_POWER_INDEX_3;
- break;
- case IWL_POWER_SYS_AC:
- final_mode = IWL_POWER_MODE_CAM;
- break;
- default:
- final_mode = IWL_POWER_INDEX_3;
- WARN_ON(1);
- }
-
- if (setting->critical_power_setting > final_mode)
- final_mode = setting->critical_power_setting;
+ final_mode = priv->power_data.user_power_setting;
- /* driver only support CAM for non STA network */
- if (priv->iw_mode != NL80211_IFTYPE_STATION)
+ if (setting->power_disabled)
final_mode = IWL_POWER_MODE_CAM;
- if (iwl_is_ready_rf(priv) && !setting->power_disabled &&
+ if (iwl_is_ready_rf(priv) &&
((setting->power_mode != final_mode) || force)) {
struct iwl_powertable_cmd cmd;
if (final_mode == IWL_POWER_MODE_CAM)
clear_bit(STATUS_POWER_PMI, &priv->status);
- else
- set_bit(STATUS_POWER_PMI, &priv->status);
if (priv->cfg->ops->lib->update_chain_flags && update_chains)
priv->cfg->ops->lib->update_chain_flags(priv);
}
EXPORT_SYMBOL(iwl_power_update_mode);
-/* Allow other iwl code to disable/enable power management active
- * this will be useful for rate scale to disable PM during heavy
- * Tx/Rx activities
- */
-int iwl_power_disable_management(struct iwl_priv *priv, u32 ms)
-{
- u16 prev_mode;
- int ret = 0;
-
- if (priv->power_data.power_disabled)
- return -EBUSY;
-
- prev_mode = priv->power_data.user_power_setting;
- priv->power_data.user_power_setting = IWL_POWER_MODE_CAM;
- ret = iwl_power_update_mode(priv, 0);
- priv->power_data.power_disabled = 1;
- priv->power_data.user_power_setting = prev_mode;
- cancel_delayed_work(&priv->set_power_save);
- if (ms)
- queue_delayed_work(priv->workqueue, &priv->set_power_save,
- msecs_to_jiffies(ms));
-
-
- return ret;
-}
-EXPORT_SYMBOL(iwl_power_disable_management);
-
-/* Allow other iwl code to disable/enable power management active
- * this will be useful for rate scale to disable PM during high
- * volume activities
- */
-int iwl_power_enable_management(struct iwl_priv *priv)
-{
- int ret = 0;
-
- priv->power_data.power_disabled = 0;
- ret = iwl_power_update_mode(priv, 0);
- return ret;
-}
-EXPORT_SYMBOL(iwl_power_enable_management);
-
/* set user_power_setting */
int iwl_power_set_user_mode(struct iwl_priv *priv, u16 mode)
{
- if (mode > IWL_POWER_MAX)
+ if (mode >= IWL_POWER_NUM)
return -EINVAL;
priv->power_data.user_power_setting = mode;
}
EXPORT_SYMBOL(iwl_power_set_user_mode);
-/* set system_power_setting. This should be set by over all
- * PM application.
- */
-int iwl_power_set_system_mode(struct iwl_priv *priv, u16 mode)
-{
- if (mode < IWL_POWER_SYS_MAX)
- priv->power_data.system_power_setting = mode;
- else
- return -EINVAL;
- return iwl_power_update_mode(priv, 0);
-}
-EXPORT_SYMBOL(iwl_power_set_system_mode);
-
/* initialize to default */
void iwl_power_initialize(struct iwl_priv *priv)
{
iwl_power_init_handle(priv);
- priv->power_data.user_power_setting = IWL_POWER_AUTO;
- priv->power_data.system_power_setting = IWL_POWER_SYS_AUTO;
- priv->power_data.power_disabled = 0;
- priv->power_data.is_battery_active = 0;
- priv->power_data.critical_power_setting = 0;
+ priv->power_data.user_power_setting = IWL_POWER_INDEX_1;
+ /* default to disabled until mac80211 says otherwise */
+ priv->power_data.power_disabled = 1;
}
EXPORT_SYMBOL(iwl_power_initialize);
-
-/* set critical_power_setting according to temperature value */
-int iwl_power_temperature_change(struct iwl_priv *priv)
-{
- int ret = 0;
- s32 temperature = KELVIN_TO_CELSIUS(priv->last_temperature);
- u16 new_critical = priv->power_data.critical_power_setting;
-
- if (temperature > IWL_CT_KILL_TEMPERATURE)
- return 0;
- else if (temperature > IWL_MIN_POWER_TEMPERATURE)
- new_critical = IWL_POWER_INDEX_5;
- else if (temperature > IWL_REDUCED_POWER_TEMPERATURE)
- new_critical = IWL_POWER_INDEX_3;
- else
- new_critical = IWL_POWER_MODE_CAM;
-
- if (new_critical != priv->power_data.critical_power_setting)
- priv->power_data.critical_power_setting = new_critical;
-
- if (priv->power_data.critical_power_setting >
- priv->power_data.power_mode)
- ret = iwl_power_update_mode(priv, 0);
-
- return ret;
-}
-EXPORT_SYMBOL(iwl_power_temperature_change);
-
-static void iwl_bg_set_power_save(struct work_struct *work)
-{
- struct iwl_priv *priv = container_of(work,
- struct iwl_priv, set_power_save.work);
- IWL_DEBUG_POWER(priv, "update power\n");
-
- if (test_bit(STATUS_EXIT_PENDING, &priv->status))
- return;
-
- mutex_lock(&priv->mutex);
-
- /* on starting association we disable power management
- * until association, if association failed then this
- * timer will expire and enable PM again.
- */
- if (!iwl_is_associated(priv))
- iwl_power_enable_management(priv);
-
- mutex_unlock(&priv->mutex);
-}
-void iwl_setup_power_deferred_work(struct iwl_priv *priv)
-{
- INIT_DELAYED_WORK(&priv->set_power_save, iwl_bg_set_power_save);
-}
-EXPORT_SYMBOL(iwl_setup_power_deferred_work);
-
-void iwl_power_cancel_timeout(struct iwl_priv *priv)
-{
- cancel_delayed_work(&priv->set_power_save);
-}
-EXPORT_SYMBOL(iwl_power_cancel_timeout);
projects / linux-beck.git / commitdiff