video: driver: implement module remove function

Implement remove function to unregister video device,
unregister v4l2 device, remove sysfs group, deinit
irq, platform, dt, core.

Change-Id: Ib713b0b66500aafcfb5f0500b9ce7285b9640311
Signed-off-by: Darshana Patil <darshana@codeaurora.org>

driver/platform/waipio/inc/msm_vidc_waipio.h

@@ -9,5 +9,6 @@
 #include "msm_vidc_core.h"
 
 int msm_vidc_init_platform_waipio(struct msm_vidc_core *core);
+int msm_vidc_deinit_platform_waipio(struct msm_vidc_core *core);
 
 #endif // _MSM_VIDC_WAIPIO_H_

driver/platform/waipio/src/msm_vidc_waipio.c

@@ -354,3 +354,9 @@ int msm_vidc_init_platform_waipio(struct msm_vidc_core *core)
 
 	return 0;
 }
+
+int msm_vidc_deinit_platform_waipio(struct msm_vidc_core *core)
+{
+	/* do nothing */
+	return 0;
+}

driver/variant/iris2/inc/msm_vidc_iris2.h

@@ -13,3 +13,4 @@ int msm_vidc_init_iris2(struct msm_vidc_core *core);
 //	return -EINVAL;
 //}
 //#endif
+int msm_vidc_deinit_iris2(struct msm_vidc_core *core);

driver/variant/iris2/src/msm_vidc_iris2.c

@@ -519,3 +519,9 @@ int msm_vidc_init_iris2(struct msm_vidc_core *core)
 
 	return 0;
 }
+
+int msm_vidc_deinit_iris2(struct msm_vidc_core *core)
+{
+	/* do nothing */
+	return 0;
+}

driver/vidc/src/msm_vidc_driver.c

@@ -485,7 +485,7 @@ static int vb2_buffer_to_driver(struct vb2_buffer *vb2,
 	buf->data_offset = vb2->planes[0].data_offset;
 	buf->data_size = vb2->planes[0].bytesused;
 	buf->buffer_size = vb2->planes[0].length;
-	buf->timestamp = do_div(vb2->timestamp, NSEC_PER_USEC);
+	buf->timestamp = vb2->timestamp;
 
 	return rc;
 }
@@ -1003,7 +1003,7 @@ int msm_vidc_vb2_buffer_done(struct msm_vidc_inst *inst,
 	}
 	vbuf = to_vb2_v4l2_buffer(vb2);
 	vbuf->flags = buf->flags;
-	vb2->timestamp = buf->timestamp * NSEC_PER_USEC;
+	vb2->timestamp = buf->timestamp;
 	vb2->planes[0].bytesused = buf->data_size;
 	vb2_buffer_done(vb2, VB2_BUF_STATE_DONE);
 

driver/vidc/src/msm_vidc_platform.c

@@ -88,6 +88,34 @@ static int msm_vidc_init_ops(struct msm_vidc_core *core)
 	return 0;
 }
 
+int msm_vidc_deinit_platform(struct platform_device *pdev)
+{
+	struct msm_vidc_core *core;
+
+	if (!pdev) {
+		d_vpr_e("%s: invalid params\n", __func__);
+		return -EINVAL;
+	}
+
+	core = dev_get_drvdata(&pdev->dev);
+	if (!core) {
+		d_vpr_e("%s: core not found in device %s",
+			dev_name(&pdev->dev));
+		return -EINVAL;
+	}
+
+	d_vpr_h("%s()\n", __func__);
+
+	if (of_device_is_compatible(pdev->dev.of_node, "qcom,msm-vidc"))
+		msm_vidc_deinit_iris2(core);
+
+	if (of_device_is_compatible(pdev->dev.of_node, "qcom,msm-vidc"))
+		msm_vidc_deinit_platform_waipio(core);
+
+	kfree(core->platform);
+	return 0;
+}
+
 int msm_vidc_init_platform(struct platform_device *pdev)
 {
 	int rc = 0;
@@ -104,7 +132,7 @@ int msm_vidc_init_platform(struct platform_device *pdev)
 	core = dev_get_drvdata(&pdev->dev);
 	if (!core) {
 		d_vpr_e("%s: core not found in device %s",
-				dev_name(&pdev->dev));
+			dev_name(&pdev->dev));
 		return -EINVAL;
 	}
 
@@ -134,8 +162,3 @@ int msm_vidc_init_platform(struct platform_device *pdev)
 
 	return rc;
 }
-
-int msm_vidc_deinit_platform(struct platform_device *pdev)
-{
-	return 0;
-}

driver/vidc/src/msm_vidc_probe.c

@@ -20,13 +20,33 @@
 
 #define BASE_DEVICE_NUMBER 32
 
+static int msm_vidc_deinit_irq(struct msm_vidc_core *core)
+{
+	struct msm_vidc_dt *dt;
+
+	if (!core || !core->pdev || !core->dt) {
+		d_vpr_e("%s: invalid params\n", __func__);
+		return -EINVAL;
+	}
+	dt = core->dt;
+	d_vpr_h("%s: reg_base = %pa, reg_size = %#x\n",
+		__func__, &dt->register_base, dt->register_size);
+
+	if (dt->irq)
+		free_irq(dt->irq, core);
+	dt->irq = 0;
+
+	if (core->register_base_addr)
+		devm_iounmap(&core->pdev->dev, core->register_base_addr);
+	core->register_base_addr = 0;
+	return 0;
+}
+
 static int msm_vidc_init_irq(struct msm_vidc_core *core)
 {
 	int rc = 0;
 	struct msm_vidc_dt *dt;
 
-	d_vpr_e("%s()\n", __func__);
-
 	if (!core || !core->pdev || !core->dt) {
 		d_vpr_e("%s: invalid params\n", __func__);
 		return -EINVAL;
@@ -38,6 +58,7 @@ static int msm_vidc_init_irq(struct msm_vidc_core *core)
 	if (!core->register_base_addr) {
 		d_vpr_e("could not map reg addr %pa of size %d\n",
 			&dt->register_base, dt->register_size);
+		rc = -EINVAL;
 		goto exit;
 	}
 
@@ -55,9 +76,7 @@ static int msm_vidc_init_irq(struct msm_vidc_core *core)
 	return 0;
 
 exit:
-	if (core->device_workq)
-		destroy_workqueue(core->device_workq);
-
+	msm_vidc_deinit_irq(core);
 	return rc;
 }
 
@@ -75,12 +94,31 @@ static const struct of_device_id msm_vidc_dt_match[] = {
 };
 MODULE_DEVICE_TABLE(of, msm_vidc_dt_match);
 
-
-void msm_vidc_release_video_device(struct video_device *vdev)
+static void msm_vidc_release_video_device(struct video_device *vdev)
 {
 	d_vpr_e("%s:\n", __func__);
 }
 
+static void msm_vidc_unregister_video_device(struct msm_vidc_core *core,
+		enum msm_vidc_domain_type type)
+{
+	int index;
+
+	d_vpr_h("%s()\n", __func__);
+
+	if (type == MSM_VIDC_DECODER)
+		index = 0;
+	else if (type == MSM_VIDC_ENCODER)
+		index = 1;
+	else
+		return;
+
+	//rc = device_create_file(&core->vdev[index].vdev.dev, &dev_attr_link_name);
+	video_set_drvdata(&core->vdev[index].vdev, NULL);
+	video_unregister_device(&core->vdev[index].vdev);
+	//memset vdev to 0
+}
+
 static int msm_vidc_register_video_device(struct msm_vidc_core *core,
 		enum msm_vidc_domain_type type, int nr)
 {
@@ -126,6 +164,28 @@ static int msm_vidc_register_video_device(struct msm_vidc_core *core,
 	return 0;
 }
 
+static int msm_vidc_deinitialize_core(struct msm_vidc_core *core)
+{
+	int rc = 0;
+
+	if (!core) {
+		d_vpr_e("%s: invalid params\n", __func__);
+		return -EINVAL;
+	}
+	d_vpr_h("%s()\n", __func__);
+
+	mutex_destroy(&core->lock);
+	core->state = MSM_VIDC_CORE_DEINIT;
+
+	if (core->pm_workq)
+		destroy_workqueue(core->pm_workq);
+
+	if (core->device_workq)
+		destroy_workqueue(core->device_workq);
+
+	return rc;
+}
+
 static int msm_vidc_initialize_core(struct msm_vidc_core *core)
 {
 	int rc = 0;
@@ -280,42 +340,35 @@ static int msm_vidc_probe(struct platform_device *pdev)
 
 static int msm_vidc_remove(struct platform_device *pdev)
 {
-	int rc = 0;
-
-	d_vpr_h("%s()\n", __func__);
-
-/*
 	struct msm_vidc_core *core;
 
 	if (!pdev) {
 		d_vpr_e("%s: invalid input %pK", __func__, pdev);
 		return -EINVAL;
 	}
-
 	core = dev_get_drvdata(&pdev->dev);
 	if (!core) {
 		d_vpr_e("%s: invalid core", __func__);
 		return -EINVAL;
 	}
 
-	if (core->vidc_core_workq)
-		destroy_workqueue(core->vidc_core_workq);
-	vidc_hfi_deinitialize(core->hfi_type, core->device);
-	device_remove_file(&core->vdev[MSM_VIDC_ENCODER].vdev.dev,
-				&dev_attr_link_name);
-	video_unregister_device(&core->vdev[MSM_VIDC_ENCODER].vdev);
-	device_remove_file(&core->vdev[MSM_VIDC_DECODER].vdev.dev,
-				&dev_attr_link_name);
-	video_unregister_device(&core->vdev[MSM_VIDC_DECODER].vdev);
-	v4l2_device_unregister(&core->v4l2_dev);
+	d_vpr_h("%s()\n", __func__);
 
-	//msm_vidc_free_platform_resources(&core->resources);
+	msm_vidc_unregister_video_device(core, MSM_VIDC_ENCODER);
+	msm_vidc_unregister_video_device(core, MSM_VIDC_DECODER);
+	//device_remove_file(&core->vdev[MSM_VIDC_ENCODER].vdev.dev,
+				//&dev_attr_link_name);
+	//device_remove_file(&core->vdev[MSM_VIDC_DECODER].vdev.dev,
+				//&dev_attr_link_name);
+	v4l2_device_unregister(&core->v4l2_dev);
 	sysfs_remove_group(&pdev->dev.kobj, &msm_vidc_core_attr_group);
+	msm_vidc_deinit_irq(core);
+	msm_vidc_deinit_platform(pdev);
+	msm_vidc_deinit_dt(pdev);
+	msm_vidc_deinitialize_core(core);
 	dev_set_drvdata(&pdev->dev, NULL);
-	mutex_destroy(&core->lock);
 	kfree(core);
-*/
-	return rc;
+	return 0;
 }
 
 struct platform_driver msm_vidc_driver = {