V4L/DVB: vpfe_capture: remove clock and platform code

1) removed the platform code and clk configuration. They are now
   part of ccdc driver (part of the ccdc patches and platform patches 2-4);

2) Added proper error codes for ccdc register function.
Reviewed-by: Vaibhav Hiremath <hvaibhav@ti.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/davinci/vpfe_capture.c

@@ -107,9 +107,6 @@ struct ccdc_config {
 	int vpfe_probed;
 	/* name of ccdc device */
 	char name[32];
-	/* for storing mem maps for CCDC */
-	int ccdc_addr_size;
-	void *__iomem ccdc_addr;
 };
 
 /* data structures */
@@ -229,7 +226,6 @@ int vpfe_register_ccdc_device(struct ccdc_hw_device *dev)
 	BUG_ON(!dev->hw_ops.set_image_window);
 	BUG_ON(!dev->hw_ops.get_image_window);
 	BUG_ON(!dev->hw_ops.get_line_length);
-	BUG_ON(!dev->hw_ops.setfbaddr);
 	BUG_ON(!dev->hw_ops.getfid);
 
 	mutex_lock(&ccdc_lock);
@@ -240,25 +236,23 @@ int vpfe_register_ccdc_device(struct ccdc_hw_device *dev)
 		 * walk through it during vpfe probe
 		 */
 		printk(KERN_ERR "vpfe capture not initialized\n");
-		ret = -1;
+		ret = -EFAULT;
 		goto unlock;
 	}
 
 	if (strcmp(dev->name, ccdc_cfg->name)) {
 		/* ignore this ccdc */
-		ret = -1;
+		ret = -EINVAL;
 		goto unlock;
 	}
 
 	if (ccdc_dev) {
 		printk(KERN_ERR "ccdc already registered\n");
-		ret = -1;
+		ret = -EINVAL;
 		goto unlock;
 	}
 
 	ccdc_dev = dev;
-	dev->hw_ops.set_ccdc_base(ccdc_cfg->ccdc_addr,
-				  ccdc_cfg->ccdc_addr_size);
 unlock:
 	mutex_unlock(&ccdc_lock);
 	return ret;
@@ -1786,61 +1780,6 @@ static struct vpfe_device *vpfe_initialize(void)
 	return vpfe_dev;
 }
 
-static void vpfe_disable_clock(struct vpfe_device *vpfe_dev)
-{
-	struct vpfe_config *vpfe_cfg = vpfe_dev->cfg;
-
-	clk_disable(vpfe_cfg->vpssclk);
-	clk_put(vpfe_cfg->vpssclk);
-	clk_disable(vpfe_cfg->slaveclk);
-	clk_put(vpfe_cfg->slaveclk);
-	v4l2_info(vpfe_dev->pdev->driver,
-		 "vpfe vpss master & slave clocks disabled\n");
-}
-
-static int vpfe_enable_clock(struct vpfe_device *vpfe_dev)
-{
-	struct vpfe_config *vpfe_cfg = vpfe_dev->cfg;
-	int ret = -ENOENT;
-
-	vpfe_cfg->vpssclk = clk_get(vpfe_dev->pdev, "vpss_master");
-	if (NULL == vpfe_cfg->vpssclk) {
-		v4l2_err(vpfe_dev->pdev->driver, "No clock defined for"
-			 "vpss_master\n");
-		return ret;
-	}
-
-	if (clk_enable(vpfe_cfg->vpssclk)) {
-		v4l2_err(vpfe_dev->pdev->driver,
-			"vpfe vpss master clock not enabled\n");
-		goto out;
-	}
-	v4l2_info(vpfe_dev->pdev->driver,
-		 "vpfe vpss master clock enabled\n");
-
-	vpfe_cfg->slaveclk = clk_get(vpfe_dev->pdev, "vpss_slave");
-	if (NULL == vpfe_cfg->slaveclk) {
-		v4l2_err(vpfe_dev->pdev->driver,
-			"No clock defined for vpss slave\n");
-		goto out;
-	}
-
-	if (clk_enable(vpfe_cfg->slaveclk)) {
-		v4l2_err(vpfe_dev->pdev->driver,
-			 "vpfe vpss slave clock not enabled\n");
-		goto out;
-	}
-	v4l2_info(vpfe_dev->pdev->driver, "vpfe vpss slave clock enabled\n");
-	return 0;
-out:
-	if (vpfe_cfg->vpssclk)
-		clk_put(vpfe_cfg->vpssclk);
-	if (vpfe_cfg->slaveclk)
-		clk_put(vpfe_cfg->slaveclk);
-
-	return -1;
-}
-
 /*
  * vpfe_probe : This function creates device entries by register
  * itself to the V4L2 driver and initializes fields of each
@@ -1870,7 +1809,7 @@ static __init int vpfe_probe(struct platform_device *pdev)
 
 	if (NULL == pdev->dev.platform_data) {
 		v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
-		ret = -ENOENT;
+		ret = -ENODEV;
 		goto probe_free_dev_mem;
 	}
 
@@ -1884,18 +1823,13 @@ static __init int vpfe_probe(struct platform_device *pdev)
 		goto probe_free_dev_mem;
 	}
 
-	/* enable vpss clocks */
-	ret = vpfe_enable_clock(vpfe_dev);
-	if (ret)
-		goto probe_free_dev_mem;
-
 	mutex_lock(&ccdc_lock);
 	/* Allocate memory for ccdc configuration */
 	ccdc_cfg = kmalloc(sizeof(struct ccdc_config), GFP_KERNEL);
 	if (NULL == ccdc_cfg) {
 		v4l2_err(pdev->dev.driver,
 			 "Memory allocation failed for ccdc_cfg\n");
-		goto probe_disable_clock;
+		goto probe_free_dev_mem;
 	}
 
 	strncpy(ccdc_cfg->name, vpfe_cfg->ccdc, 32);
@@ -1904,61 +1838,34 @@ static __init int vpfe_probe(struct platform_device *pdev)
 	if (!res1) {
 		v4l2_err(pdev->dev.driver,
 			 "Unable to get interrupt for VINT0\n");
-		ret = -ENOENT;
-		goto probe_disable_clock;
+		ret = -ENODEV;
+		goto probe_free_ccdc_cfg_mem;
 	}
 	vpfe_dev->ccdc_irq0 = res1->start;
 
 	/* Get VINT1 irq resource */
-	res1 = platform_get_resource(pdev,
-				IORESOURCE_IRQ, 1);
+	res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
 	if (!res1) {
 		v4l2_err(pdev->dev.driver,
 			 "Unable to get interrupt for VINT1\n");
-		ret = -ENOENT;
-		goto probe_disable_clock;
+		ret = -ENODEV;
+		goto probe_free_ccdc_cfg_mem;
 	}
 	vpfe_dev->ccdc_irq1 = res1->start;
 
-	/* Get address base of CCDC */
-	res1 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res1) {
-		v4l2_err(pdev->dev.driver,
-			"Unable to get register address map\n");
-		ret = -ENOENT;
-		goto probe_disable_clock;
-	}
-
-	ccdc_cfg->ccdc_addr_size = res1->end - res1->start + 1;
-	if (!request_mem_region(res1->start, ccdc_cfg->ccdc_addr_size,
-				pdev->dev.driver->name)) {
-		v4l2_err(pdev->dev.driver,
-			"Failed request_mem_region for ccdc base\n");
-		ret = -ENXIO;
-		goto probe_disable_clock;
-	}
-	ccdc_cfg->ccdc_addr = ioremap_nocache(res1->start,
-					     ccdc_cfg->ccdc_addr_size);
-	if (!ccdc_cfg->ccdc_addr) {
-		v4l2_err(pdev->dev.driver, "Unable to ioremap ccdc addr\n");
-		ret = -ENXIO;
-		goto probe_out_release_mem1;
-	}
-
 	ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, IRQF_DISABLED,
 			  "vpfe_capture0", vpfe_dev);
 
 	if (0 != ret) {
 		v4l2_err(pdev->dev.driver, "Unable to request interrupt\n");
-		goto probe_out_unmap1;
+		goto probe_free_ccdc_cfg_mem;
 	}
 
 	/* Allocate memory for video device */
 	vfd = video_device_alloc();
 	if (NULL == vfd) {
 		ret = -ENOMEM;
-		v4l2_err(pdev->dev.driver,
-			"Unable to alloc video device\n");
+		v4l2_err(pdev->dev.driver, "Unable to alloc video device\n");
 		goto probe_out_release_irq;
 	}
 
@@ -2073,12 +1980,7 @@ static __init int vpfe_probe(struct platform_device *pdev)
 		video_device_release(vpfe_dev->video_dev);
 probe_out_release_irq:
 	free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
-probe_out_unmap1:
-	iounmap(ccdc_cfg->ccdc_addr);
-probe_out_release_mem1:
-	release_mem_region(res1->start, res1->end - res1->start + 1);
-probe_disable_clock:
-	vpfe_disable_clock(vpfe_dev);
+probe_free_ccdc_cfg_mem:
 	mutex_unlock(&ccdc_lock);
 	kfree(ccdc_cfg);
 probe_free_dev_mem:
@@ -2092,7 +1994,6 @@ static __init int vpfe_probe(struct platform_device *pdev)
 static int __devexit vpfe_remove(struct platform_device *pdev)
 {
 	struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
-	struct resource *res;
 
 	v4l2_info(pdev->dev.driver, "vpfe_remove\n");
 
@@ -2100,12 +2001,6 @@ static int __devexit vpfe_remove(struct platform_device *pdev)
 	kfree(vpfe_dev->sd);
 	v4l2_device_unregister(&vpfe_dev->v4l2_dev);
 	video_unregister_device(vpfe_dev->video_dev);
-	mutex_lock(&ccdc_lock);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, res->end - res->start + 1);
-	iounmap(ccdc_cfg->ccdc_addr);
-	mutex_unlock(&ccdc_lock);
-	vpfe_disable_clock(vpfe_dev);
 	kfree(vpfe_dev);
 	kfree(ccdc_cfg);
 	return 0;