diff options
Diffstat (limited to 'mali-midgard-16.0/backend/gpu/mali_kbase_power_model_simple.c')
| -rwxr-xr-x | mali-midgard-16.0/backend/gpu/mali_kbase_power_model_simple.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/mali-midgard-16.0/backend/gpu/mali_kbase_power_model_simple.c b/mali-midgard-16.0/backend/gpu/mali_kbase_power_model_simple.c deleted file mode 100755 index d965033..0000000 --- a/mali-midgard-16.0/backend/gpu/mali_kbase_power_model_simple.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * - * (C) COPYRIGHT 2011-2016 ARM Limited. All rights reserved. - * - * This program is free software and is provided to you under the terms of the - * GNU General Public License version 2 as published by the Free Software - * Foundation, and any use by you of this program is subject to the terms - * of such GNU licence. - * - * A copy of the licence is included with the program, and can also be obtained - * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - */ - - - -#include <linux/devfreq_cooling.h> -#include <linux/thermal.h> -#include <linux/of.h> -#include <mali_kbase.h> -#include <mali_kbase_defs.h> -#include <backend/gpu/mali_kbase_power_model_simple.h> - -/* - * This model is primarily designed for the Juno platform. It may not be - * suitable for other platforms. - */ - -#define FALLBACK_STATIC_TEMPERATURE 55000 - -static u32 dynamic_coefficient; -static u32 static_coefficient; -static s32 ts[4]; -static struct thermal_zone_device *gpu_tz; - -static unsigned long model_static_power(unsigned long voltage) -{ -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) - unsigned long temperature; -#else - int temperature; -#endif - unsigned long temp; - unsigned long temp_squared, temp_cubed, temp_scaling_factor; - const unsigned long voltage_cubed = (voltage * voltage * voltage) >> 10; - - if (gpu_tz) { - int ret; - - ret = gpu_tz->ops->get_temp(gpu_tz, &temperature); - if (ret) { - pr_warn_ratelimited("Error reading temperature for gpu thermal zone: %d\n", - ret); - temperature = FALLBACK_STATIC_TEMPERATURE; - } - } else { - temperature = FALLBACK_STATIC_TEMPERATURE; - } - - /* Calculate the temperature scaling factor. To be applied to the - * voltage scaled power. - */ - temp = temperature / 1000; - temp_squared = temp * temp; - temp_cubed = temp_squared * temp; - temp_scaling_factor = - (ts[3] * temp_cubed) - + (ts[2] * temp_squared) - + (ts[1] * temp) - + ts[0]; - - return (((static_coefficient * voltage_cubed) >> 20) - * temp_scaling_factor) - / 1000000; -} - -static unsigned long model_dynamic_power(unsigned long freq, - unsigned long voltage) -{ - /* The inputs: freq (f) is in Hz, and voltage (v) in mV. - * The coefficient (c) is in mW/(MHz mV mV). - * - * This function calculates the dynamic power after this formula: - * Pdyn (mW) = c (mW/(MHz*mV*mV)) * v (mV) * v (mV) * f (MHz) - */ - const unsigned long v2 = (voltage * voltage) / 1000; /* m*(V*V) */ - const unsigned long f_mhz = freq / 1000000; /* MHz */ - - return (dynamic_coefficient * v2 * f_mhz) / 1000000; /* mW */ -} - -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0) -struct devfreq_cooling_ops power_model_simple_ops = { -#else -struct devfreq_cooling_power power_model_simple_ops = { -#endif - .get_static_power = model_static_power, - .get_dynamic_power = model_dynamic_power, -}; - -int kbase_power_model_simple_init(struct kbase_device *kbdev) -{ - struct device_node *power_model_node; - const char *tz_name; - u32 static_power, dynamic_power; - u32 voltage, voltage_squared, voltage_cubed, frequency; - - power_model_node = of_get_child_by_name(kbdev->dev->of_node, - "power_model"); - if (!power_model_node) { - dev_err(kbdev->dev, "could not find power_model node\n"); - return -ENODEV; - } - if (!of_device_is_compatible(power_model_node, - "arm,mali-simple-power-model")) { - dev_err(kbdev->dev, "power_model incompatible with simple power model\n"); - return -ENODEV; - } - - if (of_property_read_string(power_model_node, "thermal-zone", - &tz_name)) { - dev_err(kbdev->dev, "ts in power_model not available\n"); - return -EINVAL; - } - - gpu_tz = thermal_zone_get_zone_by_name(tz_name); - if (IS_ERR(gpu_tz)) { - pr_warn_ratelimited("Error getting gpu thermal zone (%ld), not yet ready?\n", - PTR_ERR(gpu_tz)); - gpu_tz = NULL; - - return -EPROBE_DEFER; - } - - if (of_property_read_u32(power_model_node, "static-power", - &static_power)) { - dev_err(kbdev->dev, "static-power in power_model not available\n"); - return -EINVAL; - } - if (of_property_read_u32(power_model_node, "dynamic-power", - &dynamic_power)) { - dev_err(kbdev->dev, "dynamic-power in power_model not available\n"); - return -EINVAL; - } - if (of_property_read_u32(power_model_node, "voltage", - &voltage)) { - dev_err(kbdev->dev, "voltage in power_model not available\n"); - return -EINVAL; - } - if (of_property_read_u32(power_model_node, "frequency", - &frequency)) { - dev_err(kbdev->dev, "frequency in power_model not available\n"); - return -EINVAL; - } - voltage_squared = (voltage * voltage) / 1000; - voltage_cubed = voltage * voltage * voltage; - static_coefficient = (static_power << 20) / (voltage_cubed >> 10); - dynamic_coefficient = (((dynamic_power * 1000) / voltage_squared) - * 1000) / frequency; - - if (of_property_read_u32_array(power_model_node, "ts", (u32 *)ts, 4)) { - dev_err(kbdev->dev, "ts in power_model not available\n"); - return -EINVAL; - } - - return 0; -} - |