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Subject: media: atomisp: Move power-management [un]init into
atomisp_pm_[un]init()
Author: Hans de Goede <hdego...@redhat.com>
Date: Fri Dec 29 23:14:20 2023 +0100
Move the power-management setup and cleanup code into
atomisp_pm_[un]init() helper functions.
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@kernel.org>
drivers/staging/media/atomisp/pci/atomisp_v4l2.c | 69 +++++++++++++-----------
1 file changed, 38 insertions(+), 31 deletions(-)
---
diff --git a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
index 0c78c1d82659..f44be2d656a8 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
@@ -1192,6 +1192,41 @@ atomisp_load_firmware(struct atomisp_device *isp)
return fw;
}
+static void atomisp_pm_init(struct atomisp_device *isp)
+{
+ /*
+ * The atomisp does not use standard PCI power-management through the
+ * PCI config space. Instead this driver directly tells the P-Unit to
+ * disable the ISP over the IOSF. The standard PCI subsystem pm_ops will
+ * try to access the config space before (resume) / after (suspend) this
+ * driver has turned the ISP on / off, resulting in the following
errors:
+ *
+ * "Unable to change power state from D0 to D3hot, device inaccessible"
+ * "Unable to change power state from D3cold to D0, device inaccessible"
+ *
+ * To avoid these errors override the pm_domain so that all the PCI
+ * subsys suspend / resume handling is skipped.
+ */
+ isp->pm_domain.ops.runtime_suspend = atomisp_power_off;
+ isp->pm_domain.ops.runtime_resume = atomisp_power_on;
+ isp->pm_domain.ops.suspend = atomisp_suspend;
+ isp->pm_domain.ops.resume = atomisp_resume;
+
+ cpu_latency_qos_add_request(&isp->pm_qos, PM_QOS_DEFAULT_VALUE);
+ dev_pm_domain_set(isp->dev, &isp->pm_domain);
+
+ pm_runtime_allow(isp->dev);
+ pm_runtime_put_sync_suspend(isp->dev);
+}
+
+static void atomisp_pm_uninit(struct atomisp_device *isp)
+{
+ pm_runtime_get_sync(isp->dev);
+ pm_runtime_forbid(isp->dev);
+ dev_pm_domain_set(isp->dev, NULL);
+ cpu_latency_qos_remove_request(&isp->pm_qos);
+}
+
#define ATOM_ISP_PCI_BAR 0
static int atomisp_pci_probe(struct pci_dev *pdev, const struct pci_device_id
*id)
@@ -1438,29 +1473,7 @@ static int atomisp_pci_probe(struct pci_dev *pdev, const
struct pci_device_id *i
isp->firmware = NULL;
isp->css_env.isp_css_fw.data = NULL;
- /*
- * The atomisp does not use standard PCI power-management through the
- * PCI config space. Instead this driver directly tells the P-Unit to
- * disable the ISP over the IOSF. The standard PCI subsystem pm_ops will
- * try to access the config space before (resume) / after (suspend) this
- * driver has turned the ISP on / off, resulting in the following
errors:
- *
- * "Unable to change power state from D0 to D3hot, device inaccessible"
- * "Unable to change power state from D3cold to D0, device inaccessible"
- *
- * To avoid these errors override the pm_domain so that all the PCI
- * subsys suspend / resume handling is skipped.
- */
- isp->pm_domain.ops.runtime_suspend = atomisp_power_off;
- isp->pm_domain.ops.runtime_resume = atomisp_power_on;
- isp->pm_domain.ops.suspend = atomisp_suspend;
- isp->pm_domain.ops.resume = atomisp_resume;
-
- cpu_latency_qos_add_request(&isp->pm_qos, PM_QOS_DEFAULT_VALUE);
- dev_pm_domain_set(&pdev->dev, &isp->pm_domain);
-
- pm_runtime_allow(&pdev->dev);
- pm_runtime_put_sync_suspend(&pdev->dev);
+ atomisp_pm_init(isp);
err = v4l2_async_nf_register(&isp->notifier);
if (err) {
@@ -1471,10 +1484,7 @@ static int atomisp_pci_probe(struct pci_dev *pdev, const
struct pci_device_id *i
return 0;
error_unload_firmware:
- pm_runtime_get_sync(&pdev->dev);
- pm_runtime_forbid(&pdev->dev);
- dev_pm_domain_set(&pdev->dev, NULL);
- cpu_latency_qos_remove_request(&isp->pm_qos);
+ atomisp_pm_uninit(isp);
ia_css_unload_firmware();
error_free_irq:
devm_free_irq(&pdev->dev, pdev->irq, isp);
@@ -1495,10 +1505,7 @@ static void atomisp_pci_remove(struct pci_dev *pdev)
{
struct atomisp_device *isp = pci_get_drvdata(pdev);
- pm_runtime_get_sync(&pdev->dev);
- pm_runtime_forbid(&pdev->dev);
- dev_pm_domain_set(&pdev->dev, NULL);
- cpu_latency_qos_remove_request(&isp->pm_qos);
+ atomisp_pm_uninit(isp);
/* Undo ia_css_init() from atomisp_power_on() */
atomisp_css_uninit(isp);
