diff options
| -rw-r--r-- | arch/arm/mach-tegra/baseband-xmm-power.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/baseband-xmm-power.c b/arch/arm/mach-tegra/baseband-xmm-power.c index 75ad8d28d475..20f8d306f901 100644 --- a/arch/arm/mach-tegra/baseband-xmm-power.c +++ b/arch/arm/mach-tegra/baseband-xmm-power.c @@ -31,6 +31,7 @@ #include <linux/usb.h> #include <linux/pm_runtime.h> #include <linux/suspend.h> +#include <linux/pm_qos_params.h> #include <mach/usb_phy.h> #include "board.h" #include "board-enterprise.h" @@ -109,6 +110,9 @@ static DEFINE_MUTEX(xmm_onoff_mutex); static bool system_suspending; static struct regulator *enterprise_hsic_reg; static bool _hsic_reg_status; +static struct pm_qos_request_list boost_cpu_freq_req; +static struct delayed_work pm_qos_work; +#define BOOST_CPU_FREQ_MIN 1500000 /* driver specific data - same structure is used for flashless * & flashed modem drivers i.e. baseband-xmm-power2.c @@ -190,6 +194,13 @@ static int baseband_modem_power_on(struct baseband_power_platform_data *data) udelay(70); gpio_set_value(data->modem.xmm.bb_on, 0); + pr_debug("%s: pm qos request CPU 1.5GHz\n", __func__); + pm_qos_update_request(&boost_cpu_freq_req, (s32)BOOST_CPU_FREQ_MIN); + /* Device enumeration should happen in 1 sec however in any case + * we want to request it back to normal so schedule work to restore + * CPU freq after 2 seconds */ + schedule_delayed_work(&pm_qos_work, msecs_to_jiffies(2000)); + return 0; } @@ -358,6 +369,13 @@ static ssize_t xmm_onoff(struct device *dev, struct device_attribute *attr, return count; } +static void pm_qos_worker(struct work_struct *work) +{ + pr_debug("%s - pm qos CPU back to normal\n", __func__); + pm_qos_update_request(&boost_cpu_freq_req, + (s32)PM_QOS_CPU_FREQ_MIN_DEFAULT_VALUE); +} + static DEVICE_ATTR(xmm_onoff, S_IRUSR | S_IWUSR | S_IRGRP, NULL, xmm_onoff); @@ -1144,6 +1162,11 @@ static struct platform_driver baseband_power_driver = { static int __init xmm_power_init(void) { pr_debug("%s\n", __func__); + + INIT_DELAYED_WORK(&pm_qos_work, pm_qos_worker); + pm_qos_add_request(&boost_cpu_freq_req, PM_QOS_CPU_FREQ_MIN, + (s32)PM_QOS_CPU_FREQ_MIN_DEFAULT_VALUE); + return platform_driver_register(&baseband_power_driver); } @@ -1151,6 +1174,8 @@ static void __exit xmm_power_exit(void) { pr_debug("%s\n", __func__); platform_driver_unregister(&baseband_power_driver); + + pm_qos_remove_request(&boost_cpu_freq_req); } module_init(xmm_power_init) |