1 files changed, 59 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
index eb0aa5d1..2debe235 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
@@ -29,6 +29,7 @@
 #include "gk20a.h"
 #include "gr_gk20a.h"
 #include "fifo_gk20a.h"
+#include "pmu_gk20a.h"
 
 
 #define PTIMER_FP_FACTOR                        1000000
@@ -332,6 +333,62 @@ static ssize_t elpg_enable_read(struct device *device,
 
 static DEVICE_ATTR(elpg_enable, ROOTRW, elpg_enable_read, elpg_enable_store);
 
+static ssize_t aelpg_param_store(struct device *device,
+        struct device_attribute *attr, const char *buf, size_t count)
+{
+        struct platform_device *ndev = to_platform_device(device);
+        struct gk20a *g = get_gk20a(ndev);
+        int status = 0;
+        union pmu_ap_cmd ap_cmd;
+        int *paramlist = (int *)g->pmu.aelpg_param;
+        u32 defaultparam[5] = {
+                        APCTRL_SAMPLING_PERIOD_PG_DEFAULT_US,
+                        APCTRL_MINIMUM_IDLE_FILTER_DEFAULT_US,
+                        APCTRL_MINIMUM_TARGET_SAVING_DEFAULT_US,
+                        APCTRL_POWER_BREAKEVEN_DEFAULT_US,
+                        APCTRL_CYCLES_PER_SAMPLE_MAX_DEFAULT
+        };
+
+        /* Get each parameter value from input string*/
+        sscanf(buf, "%d %d %d %d %d", &paramlist[0], &paramlist[1],
+                                &paramlist[2], &paramlist[3], &paramlist[4]);
+
+        /* If parameter value is 0 then reset to SW default values*/
+        if ((paramlist[0] | paramlist[1] | paramlist[2]
+                | paramlist[3] | paramlist[4]) == 0x00) {
+                memcpy(paramlist, defaultparam, sizeof(defaultparam));
+        }
+
+        /* If aelpg is enabled & pmu is ready then post values to
+         * PMU else store then post later
+         */
+        if (g->aelpg_enabled && g->pmu.pmu_ready) {
+                /* Disable AELPG */
+                ap_cmd.init.cmd_id = PMU_AP_CMD_ID_DISABLE_CTRL;
+                status = gk20a_pmu_ap_send_command(g, &ap_cmd, false);
+
+                /* Enable AELPG */
+                gk20a_aelpg_init(g);
+                gk20a_aelpg_init_and_enable(g, PMU_AP_CTRL_ID_GRAPHICS);
+        }
+
+        return count;
+}
+
+static ssize_t aelpg_param_read(struct device *device,
+                struct device_attribute *attr, char *buf)
+{
+        struct platform_device *ndev = to_platform_device(device);
+        struct gk20a *g = get_gk20a(ndev);
+
+        return sprintf(buf, "%d %d %d %d %d\n", g->pmu.aelpg_param[0],
+                g->pmu.aelpg_param[1], g->pmu.aelpg_param[2],
+                g->pmu.aelpg_param[3], g->pmu.aelpg_param[4]);
+}
+
+static DEVICE_ATTR(aelpg_param, S_IRWXUGO,
+                aelpg_param_read, aelpg_param_store);
+
 #ifdef CONFIG_PM_RUNTIME
 static ssize_t force_idle_store(struct device *device,
         struct device_attribute *attr, const char *buf, size_t count)
@@ -400,6 +457,7 @@ void gk20a_remove_sysfs(struct device *dev)
 #ifdef CONFIG_PM_RUNTIME
         device_remove_file(dev, &dev_attr_force_idle);
 #endif
+        device_remove_file(dev, &dev_attr_aelpg_param);
 
         if (g->host1x_dev && (dev->parent != &g->host1x_dev->dev))
                 sysfs_remove_link(&dev->kobj, dev_name(dev));
@@ -423,6 +481,7 @@ void gk20a_create_sysfs(struct platform_device *dev)
 #ifdef CONFIG_PM_RUNTIME
         error |= device_create_file(&dev->dev, &dev_attr_force_idle);
 #endif
+        error |= device_create_file(&dev->dev, &dev_attr_aelpg_param);
 
         if (g->host1x_dev && (dev->dev.parent != &g->host1x_dev->dev))
                 error |= sysfs_create_link(&g->host1x_dev->dev.kobj,