| /* |
| * Copyright © 2012 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| * |
| * Authors: |
| * Ben Widawsky <ben@bwidawsk.net> |
| * |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/module.h> |
| #include <linux/stat.h> |
| #include <linux/sysfs.h> |
| #include "intel_drv.h" |
| #include "i915_drv.h" |
| |
| static inline struct drm_i915_private *kdev_minor_to_i915(struct device *kdev) |
| { |
| struct drm_minor *minor = dev_get_drvdata(kdev); |
| return to_i915(minor->dev); |
| } |
| |
| #ifdef CONFIG_PM |
| static u32 calc_residency(struct drm_i915_private *dev_priv, |
| i915_reg_t reg) |
| { |
| return DIV_ROUND_CLOSEST_ULL(intel_rc6_residency_us(dev_priv, reg), |
| 1000); |
| } |
| |
| static ssize_t |
| show_rc6_mask(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%x\n", intel_rc6_enabled()); |
| } |
| |
| static ssize_t |
| show_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| u32 rc6_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6); |
| return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency); |
| } |
| |
| static ssize_t |
| show_rc6p_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| u32 rc6p_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6p); |
| return snprintf(buf, PAGE_SIZE, "%u\n", rc6p_residency); |
| } |
| |
| static ssize_t |
| show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| u32 rc6pp_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6pp); |
| return snprintf(buf, PAGE_SIZE, "%u\n", rc6pp_residency); |
| } |
| |
| static ssize_t |
| show_media_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| u32 rc6_residency = calc_residency(dev_priv, VLV_GT_MEDIA_RC6); |
| return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency); |
| } |
| |
| static DEVICE_ATTR(rc6_enable, S_IRUGO, show_rc6_mask, NULL); |
| static DEVICE_ATTR(rc6_residency_ms, S_IRUGO, show_rc6_ms, NULL); |
| static DEVICE_ATTR(rc6p_residency_ms, S_IRUGO, show_rc6p_ms, NULL); |
| static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL); |
| static DEVICE_ATTR(media_rc6_residency_ms, S_IRUGO, show_media_rc6_ms, NULL); |
| |
| static struct attribute *rc6_attrs[] = { |
| &dev_attr_rc6_enable.attr, |
| &dev_attr_rc6_residency_ms.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group rc6_attr_group = { |
| .name = power_group_name, |
| .attrs = rc6_attrs |
| }; |
| |
| static struct attribute *rc6p_attrs[] = { |
| &dev_attr_rc6p_residency_ms.attr, |
| &dev_attr_rc6pp_residency_ms.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group rc6p_attr_group = { |
| .name = power_group_name, |
| .attrs = rc6p_attrs |
| }; |
| |
| static struct attribute *media_rc6_attrs[] = { |
| &dev_attr_media_rc6_residency_ms.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group media_rc6_attr_group = { |
| .name = power_group_name, |
| .attrs = media_rc6_attrs |
| }; |
| #endif |
| |
| static int l3_access_valid(struct drm_i915_private *dev_priv, loff_t offset) |
| { |
| if (!HAS_L3_DPF(dev_priv)) |
| return -EPERM; |
| |
| if (offset % 4 != 0) |
| return -EINVAL; |
| |
| if (offset >= GEN7_L3LOG_SIZE) |
| return -ENXIO; |
| |
| return 0; |
| } |
| |
| static ssize_t |
| i915_l3_read(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *attr, char *buf, |
| loff_t offset, size_t count) |
| { |
| struct device *kdev = kobj_to_dev(kobj); |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| struct drm_device *dev = &dev_priv->drm; |
| int slice = (int)(uintptr_t)attr->private; |
| int ret; |
| |
| count = round_down(count, 4); |
| |
| ret = l3_access_valid(dev_priv, offset); |
| if (ret) |
| return ret; |
| |
| count = min_t(size_t, GEN7_L3LOG_SIZE - offset, count); |
| |
| ret = i915_mutex_lock_interruptible(dev); |
| if (ret) |
| return ret; |
| |
| if (dev_priv->l3_parity.remap_info[slice]) |
| memcpy(buf, |
| dev_priv->l3_parity.remap_info[slice] + (offset/4), |
| count); |
| else |
| memset(buf, 0, count); |
| |
| mutex_unlock(&dev->struct_mutex); |
| |
| return count; |
| } |
| |
| static ssize_t |
| i915_l3_write(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *attr, char *buf, |
| loff_t offset, size_t count) |
| { |
| struct device *kdev = kobj_to_dev(kobj); |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| struct drm_device *dev = &dev_priv->drm; |
| struct i915_gem_context *ctx; |
| int slice = (int)(uintptr_t)attr->private; |
| u32 **remap_info; |
| int ret; |
| |
| ret = l3_access_valid(dev_priv, offset); |
| if (ret) |
| return ret; |
| |
| ret = i915_mutex_lock_interruptible(dev); |
| if (ret) |
| return ret; |
| |
| remap_info = &dev_priv->l3_parity.remap_info[slice]; |
| if (!*remap_info) { |
| *remap_info = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL); |
| if (!*remap_info) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| } |
| |
| /* TODO: Ideally we really want a GPU reset here to make sure errors |
| * aren't propagated. Since I cannot find a stable way to reset the GPU |
| * at this point it is left as a TODO. |
| */ |
| memcpy(*remap_info + (offset/4), buf, count); |
| |
| /* NB: We defer the remapping until we switch to the context */ |
| list_for_each_entry(ctx, &dev_priv->contexts.list, link) |
| ctx->remap_slice |= (1<<slice); |
| |
| ret = count; |
| |
| out: |
| mutex_unlock(&dev->struct_mutex); |
| |
| return ret; |
| } |
| |
| static const struct bin_attribute dpf_attrs = { |
| .attr = {.name = "l3_parity", .mode = (S_IRUSR | S_IWUSR)}, |
| .size = GEN7_L3LOG_SIZE, |
| .read = i915_l3_read, |
| .write = i915_l3_write, |
| .mmap = NULL, |
| .private = (void *)0 |
| }; |
| |
| static const struct bin_attribute dpf_attrs_1 = { |
| .attr = {.name = "l3_parity_slice_1", .mode = (S_IRUSR | S_IWUSR)}, |
| .size = GEN7_L3LOG_SIZE, |
| .read = i915_l3_read, |
| .write = i915_l3_write, |
| .mmap = NULL, |
| .private = (void *)1 |
| }; |
| |
| static ssize_t gt_act_freq_mhz_show(struct device *kdev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| int ret; |
| |
| intel_runtime_pm_get(dev_priv); |
| |
| mutex_lock(&dev_priv->pcu_lock); |
| if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
| u32 freq; |
| freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
| ret = intel_gpu_freq(dev_priv, (freq >> 8) & 0xff); |
| } else { |
| u32 rpstat = I915_READ(GEN6_RPSTAT1); |
| if (INTEL_GEN(dev_priv) >= 9) |
| ret = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT; |
| else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) |
| ret = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT; |
| else |
| ret = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT; |
| ret = intel_gpu_freq(dev_priv, ret); |
| } |
| mutex_unlock(&dev_priv->pcu_lock); |
| |
| intel_runtime_pm_put(dev_priv); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", ret); |
| } |
| |
| static ssize_t gt_cur_freq_mhz_show(struct device *kdev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| intel_gpu_freq(dev_priv, |
| dev_priv->gt_pm.rps.cur_freq)); |
| } |
| |
| static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| intel_gpu_freq(dev_priv, |
| dev_priv->gt_pm.rps.boost_freq)); |
| } |
| |
| static ssize_t gt_boost_freq_mhz_store(struct device *kdev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| struct intel_rps *rps = &dev_priv->gt_pm.rps; |
| u32 val; |
| ssize_t ret; |
| |
| ret = kstrtou32(buf, 0, &val); |
| if (ret) |
| return ret; |
| |
| /* Validate against (static) hardware limits */ |
| val = intel_freq_opcode(dev_priv, val); |
| if (val < rps->min_freq || val > rps->max_freq) |
| return -EINVAL; |
| |
| mutex_lock(&dev_priv->pcu_lock); |
| rps->boost_freq = val; |
| mutex_unlock(&dev_priv->pcu_lock); |
| |
| return count; |
| } |
| |
| static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| intel_gpu_freq(dev_priv, |
| dev_priv->gt_pm.rps.efficient_freq)); |
| } |
| |
| static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| intel_gpu_freq(dev_priv, |
| dev_priv->gt_pm.rps.max_freq_softlimit)); |
| } |
| |
| static ssize_t gt_max_freq_mhz_store(struct device *kdev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| struct intel_rps *rps = &dev_priv->gt_pm.rps; |
| u32 val; |
| ssize_t ret; |
| |
| ret = kstrtou32(buf, 0, &val); |
| if (ret) |
| return ret; |
| |
| intel_runtime_pm_get(dev_priv); |
| |
| mutex_lock(&dev_priv->pcu_lock); |
| |
| val = intel_freq_opcode(dev_priv, val); |
| |
| if (val < rps->min_freq || |
| val > rps->max_freq || |
| val < rps->min_freq_softlimit) { |
| mutex_unlock(&dev_priv->pcu_lock); |
| intel_runtime_pm_put(dev_priv); |
| return -EINVAL; |
| } |
| |
| if (val > rps->rp0_freq) |
| DRM_DEBUG("User requested overclocking to %d\n", |
| intel_gpu_freq(dev_priv, val)); |
| |
| rps->max_freq_softlimit = val; |
| |
| val = clamp_t(int, rps->cur_freq, |
| rps->min_freq_softlimit, |
| rps->max_freq_softlimit); |
| |
| /* We still need *_set_rps to process the new max_delay and |
| * update the interrupt limits and PMINTRMSK even though |
| * frequency request may be unchanged. */ |
| ret = intel_set_rps(dev_priv, val); |
| |
| mutex_unlock(&dev_priv->pcu_lock); |
| |
| intel_runtime_pm_put(dev_priv); |
| |
| return ret ?: count; |
| } |
| |
| static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| intel_gpu_freq(dev_priv, |
| dev_priv->gt_pm.rps.min_freq_softlimit)); |
| } |
| |
| static ssize_t gt_min_freq_mhz_store(struct device *kdev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| struct intel_rps *rps = &dev_priv->gt_pm.rps; |
| u32 val; |
| ssize_t ret; |
| |
| ret = kstrtou32(buf, 0, &val); |
| if (ret) |
| return ret; |
| |
| intel_runtime_pm_get(dev_priv); |
| |
| mutex_lock(&dev_priv->pcu_lock); |
| |
| val = intel_freq_opcode(dev_priv, val); |
| |
| if (val < rps->min_freq || |
| val > rps->max_freq || |
| val > rps->max_freq_softlimit) { |
| mutex_unlock(&dev_priv->pcu_lock); |
| intel_runtime_pm_put(dev_priv); |
| return -EINVAL; |
| } |
| |
| rps->min_freq_softlimit = val; |
| |
| val = clamp_t(int, rps->cur_freq, |
| rps->min_freq_softlimit, |
| rps->max_freq_softlimit); |
| |
| /* We still need *_set_rps to process the new min_delay and |
| * update the interrupt limits and PMINTRMSK even though |
| * frequency request may be unchanged. */ |
| ret = intel_set_rps(dev_priv, val); |
| |
| mutex_unlock(&dev_priv->pcu_lock); |
| |
| intel_runtime_pm_put(dev_priv); |
| |
| return ret ?: count; |
| } |
| |
| static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL); |
| static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL); |
| static DEVICE_ATTR(gt_boost_freq_mhz, S_IRUGO | S_IWUSR, gt_boost_freq_mhz_show, gt_boost_freq_mhz_store); |
| static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store); |
| static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store); |
| |
| static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show, NULL); |
| |
| static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf); |
| static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| static DEVICE_ATTR(gt_RP1_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| static DEVICE_ATTR(gt_RPn_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| |
| /* For now we have a static number of RP states */ |
| static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| { |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| struct intel_rps *rps = &dev_priv->gt_pm.rps; |
| u32 val; |
| |
| if (attr == &dev_attr_gt_RP0_freq_mhz) |
| val = intel_gpu_freq(dev_priv, rps->rp0_freq); |
| else if (attr == &dev_attr_gt_RP1_freq_mhz) |
| val = intel_gpu_freq(dev_priv, rps->rp1_freq); |
| else if (attr == &dev_attr_gt_RPn_freq_mhz) |
| val = intel_gpu_freq(dev_priv, rps->min_freq); |
| else |
| BUG(); |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", val); |
| } |
| |
| static const struct attribute *gen6_attrs[] = { |
| &dev_attr_gt_act_freq_mhz.attr, |
| &dev_attr_gt_cur_freq_mhz.attr, |
| &dev_attr_gt_boost_freq_mhz.attr, |
| &dev_attr_gt_max_freq_mhz.attr, |
| &dev_attr_gt_min_freq_mhz.attr, |
| &dev_attr_gt_RP0_freq_mhz.attr, |
| &dev_attr_gt_RP1_freq_mhz.attr, |
| &dev_attr_gt_RPn_freq_mhz.attr, |
| NULL, |
| }; |
| |
| static const struct attribute *vlv_attrs[] = { |
| &dev_attr_gt_act_freq_mhz.attr, |
| &dev_attr_gt_cur_freq_mhz.attr, |
| &dev_attr_gt_boost_freq_mhz.attr, |
| &dev_attr_gt_max_freq_mhz.attr, |
| &dev_attr_gt_min_freq_mhz.attr, |
| &dev_attr_gt_RP0_freq_mhz.attr, |
| &dev_attr_gt_RP1_freq_mhz.attr, |
| &dev_attr_gt_RPn_freq_mhz.attr, |
| &dev_attr_vlv_rpe_freq_mhz.attr, |
| NULL, |
| }; |
| |
| #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) |
| |
| static ssize_t error_state_read(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *attr, char *buf, |
| loff_t off, size_t count) |
| { |
| |
| struct device *kdev = kobj_to_dev(kobj); |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| struct drm_i915_error_state_buf error_str; |
| struct i915_gpu_state *gpu; |
| ssize_t ret; |
| |
| ret = i915_error_state_buf_init(&error_str, dev_priv, count, off); |
| if (ret) |
| return ret; |
| |
| gpu = i915_first_error_state(dev_priv); |
| ret = i915_error_state_to_str(&error_str, gpu); |
| if (ret) |
| goto out; |
| |
| ret = count < error_str.bytes ? count : error_str.bytes; |
| memcpy(buf, error_str.buf, ret); |
| |
| out: |
| i915_gpu_state_put(gpu); |
| i915_error_state_buf_release(&error_str); |
| |
| return ret; |
| } |
| |
| static ssize_t error_state_write(struct file *file, struct kobject *kobj, |
| struct bin_attribute *attr, char *buf, |
| loff_t off, size_t count) |
| { |
| struct device *kdev = kobj_to_dev(kobj); |
| struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); |
| |
| DRM_DEBUG_DRIVER("Resetting error state\n"); |
| i915_reset_error_state(dev_priv); |
| |
| return count; |
| } |
| |
| static const struct bin_attribute error_state_attr = { |
| .attr.name = "error", |
| .attr.mode = S_IRUSR | S_IWUSR, |
| .size = 0, |
| .read = error_state_read, |
| .write = error_state_write, |
| }; |
| |
| static void i915_setup_error_capture(struct device *kdev) |
| { |
| if (sysfs_create_bin_file(&kdev->kobj, &error_state_attr)) |
| DRM_ERROR("error_state sysfs setup failed\n"); |
| } |
| |
| static void i915_teardown_error_capture(struct device *kdev) |
| { |
| sysfs_remove_bin_file(&kdev->kobj, &error_state_attr); |
| } |
| #else |
| static void i915_setup_error_capture(struct device *kdev) {} |
| static void i915_teardown_error_capture(struct device *kdev) {} |
| #endif |
| |
| void i915_setup_sysfs(struct drm_i915_private *dev_priv) |
| { |
| struct device *kdev = dev_priv->drm.primary->kdev; |
| int ret; |
| |
| #ifdef CONFIG_PM |
| if (HAS_RC6(dev_priv)) { |
| ret = sysfs_merge_group(&kdev->kobj, |
| &rc6_attr_group); |
| if (ret) |
| DRM_ERROR("RC6 residency sysfs setup failed\n"); |
| } |
| if (HAS_RC6p(dev_priv)) { |
| ret = sysfs_merge_group(&kdev->kobj, |
| &rc6p_attr_group); |
| if (ret) |
| DRM_ERROR("RC6p residency sysfs setup failed\n"); |
| } |
| if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
| ret = sysfs_merge_group(&kdev->kobj, |
| &media_rc6_attr_group); |
| if (ret) |
| DRM_ERROR("Media RC6 residency sysfs setup failed\n"); |
| } |
| #endif |
| if (HAS_L3_DPF(dev_priv)) { |
| ret = device_create_bin_file(kdev, &dpf_attrs); |
| if (ret) |
| DRM_ERROR("l3 parity sysfs setup failed\n"); |
| |
| if (NUM_L3_SLICES(dev_priv) > 1) { |
| ret = device_create_bin_file(kdev, |
| &dpf_attrs_1); |
| if (ret) |
| DRM_ERROR("l3 parity slice 1 setup failed\n"); |
| } |
| } |
| |
| ret = 0; |
| if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
| ret = sysfs_create_files(&kdev->kobj, vlv_attrs); |
| else if (INTEL_GEN(dev_priv) >= 6) |
| ret = sysfs_create_files(&kdev->kobj, gen6_attrs); |
| if (ret) |
| DRM_ERROR("RPS sysfs setup failed\n"); |
| |
| i915_setup_error_capture(kdev); |
| } |
| |
| void i915_teardown_sysfs(struct drm_i915_private *dev_priv) |
| { |
| struct device *kdev = dev_priv->drm.primary->kdev; |
| |
| i915_teardown_error_capture(kdev); |
| |
| if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
| sysfs_remove_files(&kdev->kobj, vlv_attrs); |
| else |
| sysfs_remove_files(&kdev->kobj, gen6_attrs); |
| device_remove_bin_file(kdev, &dpf_attrs_1); |
| device_remove_bin_file(kdev, &dpf_attrs); |
| #ifdef CONFIG_PM |
| sysfs_unmerge_group(&kdev->kobj, &rc6_attr_group); |
| sysfs_unmerge_group(&kdev->kobj, &rc6p_attr_group); |
| #endif |
| } |