media: atomisp: Remove atomisp_ospm_dphy_up()/_down() functions

atomisp_ospm_dphy_up() is an empty function now and
atomisp_ospm_dphy_down() contains a couple of checks + goto done
statements which don't matter since the function always ends up at
the done label regardless and then it does 1 pci-config write.

Move the single pci-config write directly to atomisp_power_off()
and remove the atomisp_ospm_dphy_up()/_down() functions.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_cmd.c

@@ -5492,40 +5492,6 @@ int atomisp_set_shading_table(struct atomisp_sub_device *asd,
 	return ret;
 }
 
-/*Turn off ISP dphy */
-int atomisp_ospm_dphy_down(struct atomisp_device *isp)
-{
-	struct pci_dev *pdev = to_pci_dev(isp->dev);
-	u32 reg;
-
-	dev_dbg(isp->dev, "%s\n", __func__);
-
-	/* if ISP timeout, we can force powerdown */
-	if (isp->isp_timeout)
-		goto done;
-
-	if (!atomisp_dev_users(isp))
-		goto done;
-
-done:
-	/*
-	 * MRFLD IUNIT DPHY is located in an always-power-on island
-	 * MRFLD HW design need all CSI ports are disabled before
-	 * powering down the IUNIT.
-	 */
-	pci_read_config_dword(pdev, MRFLD_PCI_CSI_CONTROL, &reg);
-	reg |= MRFLD_ALL_CSI_PORTS_OFF_MASK;
-	pci_write_config_dword(pdev, MRFLD_PCI_CSI_CONTROL, reg);
-	return 0;
-}
-
-/*Turn on ISP dphy */
-int atomisp_ospm_dphy_up(struct atomisp_device *isp)
-{
-	dev_dbg(isp->dev, "%s\n", __func__);
-	return 0;
-}
-
 int atomisp_exif_makernote(struct atomisp_sub_device *asd,
 			   struct atomisp_makernote_info *config)
 {

drivers/staging/media/atomisp/pci/atomisp_cmd.h

@@ -273,8 +273,6 @@ int atomisp_set_shading_table(struct atomisp_sub_device *asd,
 int atomisp_offline_capture_configure(struct atomisp_sub_device *asd,
 				      struct atomisp_cont_capture_conf *cvf_config);
 
-int atomisp_ospm_dphy_down(struct atomisp_device *isp);
-int atomisp_ospm_dphy_up(struct atomisp_device *isp);
 int atomisp_exif_makernote(struct atomisp_sub_device *asd,
 			   struct atomisp_makernote_info *config);
 

drivers/staging/media/atomisp/pci/atomisp_v4l2.c

@@ -722,9 +722,10 @@ static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
 
 int atomisp_power_off(struct device *dev)
 {
-	struct atomisp_device *isp = (struct atomisp_device *)
-				     dev_get_drvdata(dev);
+	struct atomisp_device *isp = dev_get_drvdata(dev);
+	struct pci_dev *pdev = to_pci_dev(dev);
 	int ret;
+	u32 reg;
 
 	atomisp_css_uninit(isp);
 
@@ -732,10 +733,15 @@ int atomisp_power_off(struct device *dev)
 	if (ret)
 		return ret;
 
-	/*Turn off the ISP d-phy*/
-	ret = atomisp_ospm_dphy_down(isp);
-	if (ret)
-		return ret;
+	/*
+	 * MRFLD IUNIT DPHY is located in an always-power-on island
+	 * MRFLD HW design need all CSI ports are disabled before
+	 * powering down the IUNIT.
+	 */
+	pci_read_config_dword(pdev, MRFLD_PCI_CSI_CONTROL, &reg);
+	reg |= MRFLD_ALL_CSI_PORTS_OFF_MASK;
+	pci_write_config_dword(pdev, MRFLD_PCI_CSI_CONTROL, reg);
+
 	cpu_latency_qos_update_request(&isp->pm_qos, PM_QOS_DEFAULT_VALUE);
 	return atomisp_mrfld_power(isp, false);
 }
@@ -751,12 +757,6 @@ int atomisp_power_on(struct device *dev)
 		return ret;
 
 	cpu_latency_qos_update_request(&isp->pm_qos, isp->max_isr_latency);
-	/*Turn on ISP d-phy */
-	ret = atomisp_ospm_dphy_up(isp);
-	if (ret) {
-		dev_err(isp->dev, "Failed to power up ISP!.\n");
-		return -EINVAL;
-	}
 
 	/*restore register values for iUnit and iUnitPHY registers*/
 	if (isp->saved_regs.pcicmdsts)