drm/amd/powerplay: return 0 when interface not implement on some asic.

Don't fail if certain optional interface callbacks are missing.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index 32a6a6f..ce8d9bf 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -37,6 +37,12 @@
                        return -EINVAL;                                 \
        } while (0)
 
+#define PP_CHECK_HW(hwmgr)                                             \
+       do {                                                            \
+               if ((hwmgr) == NULL || (hwmgr)->hwmgr_func == NULL)     \
+                       return -EINVAL;                                 \
+       } while (0)
+
 static int pp_early_init(void *handle)
 {
        return 0;
@@ -54,8 +60,9 @@ static int pp_sw_init(void *handle)
        pp_handle = (struct pp_instance *)handle;
        hwmgr = pp_handle->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->pptable_func == NULL ||
-           hwmgr->hwmgr_func == NULL ||
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->pptable_func == NULL ||
            hwmgr->pptable_func->pptable_init == NULL ||
            hwmgr->hwmgr_func->backend_init == NULL)
                return -EINVAL;
@@ -66,9 +73,9 @@ static int pp_sw_init(void *handle)
                ret = hwmgr->hwmgr_func->backend_init(hwmgr);
 
        if (ret)
-               printk("amdgpu: powerplay initialization failed\n");
+               printk(KERN_ERR "amdgpu: powerplay initialization failed\n");
        else
-               printk("amdgpu: powerplay initialized\n");
+               printk(KERN_INFO "amdgpu: powerplay initialized\n");
 
        return ret;
 }
@@ -85,8 +92,9 @@ static int pp_sw_fini(void *handle)
        pp_handle = (struct pp_instance *)handle;
        hwmgr = pp_handle->hwmgr;
 
-       if (hwmgr != NULL || hwmgr->hwmgr_func != NULL ||
-           hwmgr->hwmgr_func->backend_fini != NULL)
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->backend_fini != NULL)
                ret = hwmgr->hwmgr_func->backend_fini(hwmgr);
 
        return ret;
@@ -188,11 +196,12 @@ static int pp_set_clockgating_state(void *handle,
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL)
-                       return -EINVAL;
+       PP_CHECK_HW(hwmgr);
 
-       if (hwmgr->hwmgr_func->update_clock_gatings == NULL)
+       if (hwmgr->hwmgr_func->update_clock_gatings == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
                return 0;
+       }
 
        if (state == AMD_CG_STATE_UNGATE)
                pp_state = 0;
@@ -276,9 +285,12 @@ static int pp_set_powergating_state(void *handle,
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-                       hwmgr->hwmgr_func->enable_per_cu_power_gating == NULL)
-                               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->enable_per_cu_power_gating == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        /* Enable/disable GFX per cu powergating through SMU */
        return hwmgr->hwmgr_func->enable_per_cu_power_gating(hwmgr,
@@ -371,9 +383,12 @@ static int pp_dpm_force_performance_level(void *handle,
 
        hwmgr = pp_handle->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-           hwmgr->hwmgr_func->force_dpm_level == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->force_dpm_level == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        hwmgr->hwmgr_func->force_dpm_level(hwmgr, level);
 
@@ -405,9 +420,12 @@ static int pp_dpm_get_sclk(void *handle, bool low)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-           hwmgr->hwmgr_func->get_sclk == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->get_sclk == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->get_sclk(hwmgr, low);
 }
@@ -421,9 +439,12 @@ static int pp_dpm_get_mclk(void *handle, bool low)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-           hwmgr->hwmgr_func->get_mclk == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->get_mclk == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->get_mclk(hwmgr, low);
 }
@@ -437,9 +458,12 @@ static int pp_dpm_powergate_vce(void *handle, bool gate)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-           hwmgr->hwmgr_func->powergate_vce == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->powergate_vce == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->powergate_vce(hwmgr, gate);
 }
@@ -453,9 +477,12 @@ static int pp_dpm_powergate_uvd(void *handle, bool gate)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-           hwmgr->hwmgr_func->powergate_uvd == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->powergate_uvd == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->powergate_uvd(hwmgr, gate);
 }
@@ -551,9 +578,13 @@ pp_debugfs_print_current_performance_level(void *handle,
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-         hwmgr->hwmgr_func->print_current_perforce_level == NULL)
+       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL)
+               return;
+
+       if (hwmgr->hwmgr_func->print_current_perforce_level == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
                return;
+       }
 
        hwmgr->hwmgr_func->print_current_perforce_level(hwmgr, m);
 }
@@ -567,9 +598,12 @@ static int pp_dpm_set_fan_control_mode(void *handle, uint32_t mode)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-         hwmgr->hwmgr_func->set_fan_control_mode == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->set_fan_control_mode == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->set_fan_control_mode(hwmgr, mode);
 }
@@ -583,9 +617,12 @@ static int pp_dpm_get_fan_control_mode(void *handle)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-         hwmgr->hwmgr_func->get_fan_control_mode == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->get_fan_control_mode == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->get_fan_control_mode(hwmgr);
 }
@@ -599,9 +636,12 @@ static int pp_dpm_set_fan_speed_percent(void *handle, uint32_t percent)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-         hwmgr->hwmgr_func->set_fan_speed_percent == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->set_fan_speed_percent == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->set_fan_speed_percent(hwmgr, percent);
 }
@@ -615,9 +655,12 @@ static int pp_dpm_get_fan_speed_percent(void *handle, uint32_t *speed)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-         hwmgr->hwmgr_func->get_fan_speed_percent == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->get_fan_speed_percent == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->get_fan_speed_percent(hwmgr, speed);
 }
@@ -631,9 +674,12 @@ static int pp_dpm_get_temperature(void *handle)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-         hwmgr->hwmgr_func->get_temperature == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->get_temperature == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->get_temperature(hwmgr);
 }
@@ -687,9 +733,12 @@ static int pp_dpm_get_pp_table(void *handle, char **table)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-               hwmgr->hwmgr_func->get_pp_table == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->get_pp_table == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->get_pp_table(hwmgr, table);
 }
@@ -703,9 +752,12 @@ static int pp_dpm_set_pp_table(void *handle, const char *buf, size_t size)
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-               hwmgr->hwmgr_func->set_pp_table == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->set_pp_table == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->set_pp_table(hwmgr, buf, size);
 }
@@ -720,9 +772,12 @@ static int pp_dpm_force_clock_level(void *handle,
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-                       hwmgr->hwmgr_func->force_clock_level == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
+
+       if (hwmgr->hwmgr_func->force_clock_level == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
 
        return hwmgr->hwmgr_func->force_clock_level(hwmgr, type, level);
 }
@@ -737,10 +792,12 @@ static int pp_dpm_print_clock_levels(void *handle,
 
        hwmgr = ((struct pp_instance *)handle)->hwmgr;
 
-       if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
-                       hwmgr->hwmgr_func->print_clock_levels == NULL)
-               return -EINVAL;
+       PP_CHECK_HW(hwmgr);
 
+       if (hwmgr->hwmgr_func->print_clock_levels == NULL) {
+               printk(KERN_INFO "%s was not implemented.\n", __func__);
+               return 0;
+       }
        return hwmgr->hwmgr_func->print_clock_levels(hwmgr, type, buf);
 }