drm/amd: Use attribute groups for PSP flashing attributes

Individually creating attributes can be racy, instead make attributes
using attribute groups and control their visibility with an is_visible
callback to only show when using appropriate products.

v2: squash in fix for PSP 13.0.10

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 26 insertions, 25 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 6d676bdd1505..8753e1376e47 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -202,7 +202,6 @@ static int psp_early_init(void *handle)
 	case IP_VERSION(13, 0, 3):
 	case IP_VERSION(13, 0, 5):
 	case IP_VERSION(13, 0, 8):
-	case IP_VERSION(13, 0, 10):
 	case IP_VERSION(13, 0, 11):
 		psp_v13_0_set_psp_funcs(psp);
 		psp->autoload_supported = true;
@@ -215,6 +214,7 @@ static int psp_early_init(void *handle)
 		break;
 	case IP_VERSION(13, 0, 0):
 	case IP_VERSION(13, 0, 7):
+	case IP_VERSION(13, 0, 10):
 		psp_v13_0_set_psp_funcs(psp);
 		psp->autoload_supported = true;
 		break;
@@ -3677,6 +3677,13 @@ rel_buf:
 	return 0;
 }
 
+static struct bin_attribute psp_vbflash_bin_attr = {
+	.attr = {.name = "psp_vbflash", .mode = 0660},
+	.size = 0,
+	.write = amdgpu_psp_vbflash_write,
+	.read = amdgpu_psp_vbflash_read,
+};
+
 static ssize_t amdgpu_psp_vbflash_status(struct device *dev,
 					 struct device_attribute *attr,
 					 char *buf)
@@ -3693,39 +3700,39 @@ static ssize_t amdgpu_psp_vbflash_status(struct device *dev,
 
 	return sysfs_emit(buf, "0x%x\n", vbflash_status);
 }
+static DEVICE_ATTR(psp_vbflash_status, 0440, amdgpu_psp_vbflash_status, NULL);
 
-static const struct bin_attribute psp_vbflash_bin_attr = {
-	.attr = {.name = "psp_vbflash", .mode = 0660},
-	.size = 0,
-	.write = amdgpu_psp_vbflash_write,
-	.read = amdgpu_psp_vbflash_read,
+static struct attribute *flash_attrs[] = {
+	&dev_attr_psp_vbflash_status.attr,
+	&psp_vbflash_bin_attr.attr,
+	NULL
 };
 
-static DEVICE_ATTR(psp_vbflash_status, 0440, amdgpu_psp_vbflash_status, NULL);
-
-int amdgpu_psp_sysfs_init(struct amdgpu_device *adev)
+static umode_t amdgpu_flash_attr_is_visible(struct kobject *kobj, struct attribute *attr, int idx)
 {
-	int ret = 0;
+	struct device *dev = kobj_to_dev(kobj);
+	struct drm_device *ddev = dev_get_drvdata(dev);
+	struct amdgpu_device *adev = drm_to_adev(ddev);
 
 	if (amdgpu_sriov_vf(adev))
-		return -EINVAL;
+		return 0;
 
 	switch (adev->ip_versions[MP0_HWIP][0]) {
 	case IP_VERSION(13, 0, 0):
 	case IP_VERSION(13, 0, 7):
-	case IP_VERSION(13, 0, 10):
-		ret = sysfs_create_bin_file(&adev->dev->kobj, &psp_vbflash_bin_attr);
-		if (ret)
-			dev_err(adev->dev, "Failed to create device file psp_vbflash");
-		ret = device_create_file(adev->dev, &dev_attr_psp_vbflash_status);
-		if (ret)
-			dev_err(adev->dev, "Failed to create device file psp_vbflash_status");
-		return ret;
+		if (attr == &psp_vbflash_bin_attr.attr)
+			return 0660;
+		return 0440;
 	default:
 		return 0;
 	}
 }
 
+const struct attribute_group amdgpu_flash_attr_group = {
+	.attrs = flash_attrs,
+	.is_visible = amdgpu_flash_attr_is_visible,
+};
+
 const struct amd_ip_funcs psp_ip_funcs = {
 	.name = "psp",
 	.early_init = psp_early_init,
@@ -3754,12 +3761,6 @@ static int psp_sysfs_init(struct amdgpu_device *adev)
 	return ret;
 }
 
-void amdgpu_psp_sysfs_fini(struct amdgpu_device *adev)
-{
-	sysfs_remove_bin_file(&adev->dev->kobj, &psp_vbflash_bin_attr);
-	device_remove_file(adev->dev, &dev_attr_psp_vbflash_status);
-}
-
 static void psp_sysfs_fini(struct amdgpu_device *adev)
 {
 	device_remove_file(adev->dev, &dev_attr_usbc_pd_fw);