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* [PATCH] soc: aspeed: lpc-ctrl: make parameter optional
@ 2019-05-29 17:21 Vijay Khemka
  2019-05-30  4:02 ` Andrew Jeffery
  0 siblings, 1 reply; 3+ messages in thread
From: Vijay Khemka @ 2019-05-29 17:21 UTC (permalink / raw)
  To: Joel Stanley, Andrew Jeffery, Patrick Venture, Vijay Khemka,
	Olof Johansson, Arnd Bergmann, linux-arm-kernel, linux-aspeed,
	linux-kernel
  Cc: sdasari, Greg Kroah-Hartman

Makiing memory-region and flash as optional parameter in device
tree if user needs to use these parameter through ioctl then
need to define in devicetree.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
---
 drivers/soc/aspeed/aspeed-lpc-ctrl.c | 58 +++++++++++++++++-----------
 1 file changed, 36 insertions(+), 22 deletions(-)

diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
index a024f8042259..aca13779764a 100644
--- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
+++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
@@ -68,6 +68,7 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, unsigned int cmd,
 		unsigned long param)
 {
 	struct aspeed_lpc_ctrl *lpc_ctrl = file_aspeed_lpc_ctrl(file);
+	struct device *dev = file->private_data;
 	void __user *p = (void __user *)param;
 	struct aspeed_lpc_ctrl_mapping map;
 	u32 addr;
@@ -90,6 +91,12 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, unsigned int cmd,
 		if (map.window_id != 0)
 			return -EINVAL;
 
+		/* If memory-region is not described in device tree */
+		if (!lpc_ctrl->mem_size) {
+			dev_dbg(dev, "Didn't find reserved memory\n");
+			return -ENXIO;
+		}
+
 		map.size = lpc_ctrl->mem_size;
 
 		return copy_to_user(p, &map, sizeof(map)) ? -EFAULT : 0;
@@ -126,9 +133,18 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, unsigned int cmd,
 			return -EINVAL;
 
 		if (map.window_type == ASPEED_LPC_CTRL_WINDOW_FLASH) {
+			if (!lpc_ctrl->pnor_size) {
+				dev_dbg(dev, "Didn't find host pnor flash\n");
+				return -ENXIO;
+			}
 			addr = lpc_ctrl->pnor_base;
 			size = lpc_ctrl->pnor_size;
 		} else if (map.window_type == ASPEED_LPC_CTRL_WINDOW_MEMORY) {
+			/* If memory-region is not described in device tree */
+			if (!lpc_ctrl->mem_size) {
+				dev_dbg(dev, "Didn't find reserved memory\n");
+				return -ENXIO;
+			}
 			addr = lpc_ctrl->mem_base;
 			size = lpc_ctrl->mem_size;
 		} else {
@@ -196,17 +212,17 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
 	if (!lpc_ctrl)
 		return -ENOMEM;
 
+	/* If flash is described in device tree then store */
 	node = of_parse_phandle(dev->of_node, "flash", 0);
 	if (!node) {
-		dev_err(dev, "Didn't find host pnor flash node\n");
-		return -ENODEV;
-	}
-
-	rc = of_address_to_resource(node, 1, &resm);
-	of_node_put(node);
-	if (rc) {
-		dev_err(dev, "Couldn't address to resource for flash\n");
-		return rc;
+		dev_dbg(dev, "Didn't find host pnor flash node\n");
+	} else {
+		rc = of_address_to_resource(node, 1, &resm);
+		of_node_put(node);
+		if (rc) {
+			dev_err(dev, "Couldn't address to resource for flash\n");
+			return rc;
+		}
 	}
 
 	lpc_ctrl->pnor_size = resource_size(&resm);
@@ -214,22 +230,22 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
 
 	dev_set_drvdata(&pdev->dev, lpc_ctrl);
 
+	/* If memory-region is described in device tree then store */
 	node = of_parse_phandle(dev->of_node, "memory-region", 0);
 	if (!node) {
-		dev_err(dev, "Didn't find reserved memory\n");
-		return -EINVAL;
-	}
+		dev_dbg(dev, "Didn't find reserved memory\n");
+	} else {
+		rc = of_address_to_resource(node, 0, &resm);
+		of_node_put(node);
+		if (rc) {
+			dev_err(dev, "Couldn't address to resource for reserved memory\n");
+			return -ENXIO;
+		}
 
-	rc = of_address_to_resource(node, 0, &resm);
-	of_node_put(node);
-	if (rc) {
-		dev_err(dev, "Couldn't address to resource for reserved memory\n");
-		return -ENOMEM;
+		lpc_ctrl->mem_size = resource_size(&resm);
+		lpc_ctrl->mem_base = resm.start;
 	}
 
-	lpc_ctrl->mem_size = resource_size(&resm);
-	lpc_ctrl->mem_base = resm.start;
-
 	lpc_ctrl->regmap = syscon_node_to_regmap(
 			pdev->dev.parent->of_node);
 	if (IS_ERR(lpc_ctrl->regmap)) {
@@ -258,8 +274,6 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	dev_info(dev, "Loaded at %pr\n", &resm);
-
 	return 0;
 
 err:
-- 
2.17.1


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] soc: aspeed: lpc-ctrl: make parameter optional
  2019-05-29 17:21 [PATCH] soc: aspeed: lpc-ctrl: make parameter optional Vijay Khemka
@ 2019-05-30  4:02 ` Andrew Jeffery
  2019-05-30 20:37   ` Vijay Khemka
  0 siblings, 1 reply; 3+ messages in thread
From: Andrew Jeffery @ 2019-05-30  4:02 UTC (permalink / raw)
  To: Vijay Khemka, Joel Stanley, Patrick Venture, Olof Johansson,
	Arnd Bergmann, linux-arm-kernel, linux-aspeed, linux-kernel
  Cc: Sai Dasari, Greg Kroah-Hartman



On Thu, 30 May 2019, at 02:51, Vijay Khemka wrote:
> Makiing

Typo here, but I'd prefer to see this patch go in, so

> memory-region and flash as optional parameter in device
> tree if user needs to use these parameter through ioctl then
> need to define in devicetree.
> 
> Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>

Reviewed-by: Andrew Jeffery <andrew@aj.id.au>

> ---
>  drivers/soc/aspeed/aspeed-lpc-ctrl.c | 58 +++++++++++++++++-----------
>  1 file changed, 36 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c 
> b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
> index a024f8042259..aca13779764a 100644
> --- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
> +++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
> @@ -68,6 +68,7 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, 
> unsigned int cmd,
>  		unsigned long param)
>  {
>  	struct aspeed_lpc_ctrl *lpc_ctrl = file_aspeed_lpc_ctrl(file);
> +	struct device *dev = file->private_data;
>  	void __user *p = (void __user *)param;
>  	struct aspeed_lpc_ctrl_mapping map;
>  	u32 addr;
> @@ -90,6 +91,12 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, 
> unsigned int cmd,
>  		if (map.window_id != 0)
>  			return -EINVAL;
>  
> +		/* If memory-region is not described in device tree */
> +		if (!lpc_ctrl->mem_size) {
> +			dev_dbg(dev, "Didn't find reserved memory\n");
> +			return -ENXIO;
> +		}
> +
>  		map.size = lpc_ctrl->mem_size;
>  
>  		return copy_to_user(p, &map, sizeof(map)) ? -EFAULT : 0;
> @@ -126,9 +133,18 @@ static long aspeed_lpc_ctrl_ioctl(struct file 
> *file, unsigned int cmd,
>  			return -EINVAL;
>  
>  		if (map.window_type == ASPEED_LPC_CTRL_WINDOW_FLASH) {
> +			if (!lpc_ctrl->pnor_size) {
> +				dev_dbg(dev, "Didn't find host pnor flash\n");
> +				return -ENXIO;
> +			}
>  			addr = lpc_ctrl->pnor_base;
>  			size = lpc_ctrl->pnor_size;
>  		} else if (map.window_type == ASPEED_LPC_CTRL_WINDOW_MEMORY) {
> +			/* If memory-region is not described in device tree */
> +			if (!lpc_ctrl->mem_size) {
> +				dev_dbg(dev, "Didn't find reserved memory\n");
> +				return -ENXIO;
> +			}
>  			addr = lpc_ctrl->mem_base;
>  			size = lpc_ctrl->mem_size;
>  		} else {
> @@ -196,17 +212,17 @@ static int aspeed_lpc_ctrl_probe(struct 
> platform_device *pdev)
>  	if (!lpc_ctrl)
>  		return -ENOMEM;
>  
> +	/* If flash is described in device tree then store */
>  	node = of_parse_phandle(dev->of_node, "flash", 0);
>  	if (!node) {
> -		dev_err(dev, "Didn't find host pnor flash node\n");
> -		return -ENODEV;
> -	}
> -
> -	rc = of_address_to_resource(node, 1, &resm);
> -	of_node_put(node);
> -	if (rc) {
> -		dev_err(dev, "Couldn't address to resource for flash\n");
> -		return rc;
> +		dev_dbg(dev, "Didn't find host pnor flash node\n");
> +	} else {
> +		rc = of_address_to_resource(node, 1, &resm);
> +		of_node_put(node);
> +		if (rc) {
> +			dev_err(dev, "Couldn't address to resource for flash\n");
> +			return rc;
> +		}
>  	}
>  
>  	lpc_ctrl->pnor_size = resource_size(&resm);
> @@ -214,22 +230,22 @@ static int aspeed_lpc_ctrl_probe(struct 
> platform_device *pdev)
>  
>  	dev_set_drvdata(&pdev->dev, lpc_ctrl);
>  
> +	/* If memory-region is described in device tree then store */
>  	node = of_parse_phandle(dev->of_node, "memory-region", 0);
>  	if (!node) {
> -		dev_err(dev, "Didn't find reserved memory\n");
> -		return -EINVAL;
> -	}
> +		dev_dbg(dev, "Didn't find reserved memory\n");
> +	} else {
> +		rc = of_address_to_resource(node, 0, &resm);
> +		of_node_put(node);
> +		if (rc) {
> +			dev_err(dev, "Couldn't address to resource for reserved memory\n");
> +			return -ENXIO;
> +		}
>  
> -	rc = of_address_to_resource(node, 0, &resm);
> -	of_node_put(node);
> -	if (rc) {
> -		dev_err(dev, "Couldn't address to resource for reserved memory\n");
> -		return -ENOMEM;
> +		lpc_ctrl->mem_size = resource_size(&resm);
> +		lpc_ctrl->mem_base = resm.start;
>  	}
>  
> -	lpc_ctrl->mem_size = resource_size(&resm);
> -	lpc_ctrl->mem_base = resm.start;
> -
>  	lpc_ctrl->regmap = syscon_node_to_regmap(
>  			pdev->dev.parent->of_node);
>  	if (IS_ERR(lpc_ctrl->regmap)) {
> @@ -258,8 +274,6 @@ static int aspeed_lpc_ctrl_probe(struct 
> platform_device *pdev)
>  		goto err;
>  	}
>  
> -	dev_info(dev, "Loaded at %pr\n", &resm);
> -
>  	return 0;
>  
>  err:
> -- 
> 2.17.1
> 
>

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] soc: aspeed: lpc-ctrl: make parameter optional
  2019-05-30  4:02 ` Andrew Jeffery
@ 2019-05-30 20:37   ` Vijay Khemka
  0 siblings, 0 replies; 3+ messages in thread
From: Vijay Khemka @ 2019-05-30 20:37 UTC (permalink / raw)
  To: Andrew Jeffery, Joel Stanley, Patrick Venture, Olof Johansson,
	Arnd Bergmann, linux-arm-kernel, linux-aspeed, linux-kernel
  Cc: Sai Dasari, Greg Kroah-Hartman



On 5/29/19, 9:02 PM, "Andrew Jeffery" <andrew@aj.id.au> wrote:

    
    
    On Thu, 30 May 2019, at 02:51, Vijay Khemka wrote:
    > Makiing
    
    Typo here, but I'd prefer to see this patch go in, so
Corrected in next version v2.
    
    > memory-region and flash as optional parameter in device
    > tree if user needs to use these parameter through ioctl then
    > need to define in devicetree.
    > 
    > Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
    
    Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
    
    > ---
    >  drivers/soc/aspeed/aspeed-lpc-ctrl.c | 58 +++++++++++++++++-----------
    >  1 file changed, 36 insertions(+), 22 deletions(-)
    > 
    > diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c 
    > b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
    > index a024f8042259..aca13779764a 100644
    > --- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
    > +++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
    > @@ -68,6 +68,7 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, 
    > unsigned int cmd,
    >  		unsigned long param)
    >  {
    >  	struct aspeed_lpc_ctrl *lpc_ctrl = file_aspeed_lpc_ctrl(file);
    > +	struct device *dev = file->private_data;
    >  	void __user *p = (void __user *)param;
    >  	struct aspeed_lpc_ctrl_mapping map;
    >  	u32 addr;
    > @@ -90,6 +91,12 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, 
    > unsigned int cmd,
    >  		if (map.window_id != 0)
    >  			return -EINVAL;
    >  
    > +		/* If memory-region is not described in device tree */
    > +		if (!lpc_ctrl->mem_size) {
    > +			dev_dbg(dev, "Didn't find reserved memory\n");
    > +			return -ENXIO;
    > +		}
    > +
    >  		map.size = lpc_ctrl->mem_size;
    >  
    >  		return copy_to_user(p, &map, sizeof(map)) ? -EFAULT : 0;
    > @@ -126,9 +133,18 @@ static long aspeed_lpc_ctrl_ioctl(struct file 
    > *file, unsigned int cmd,
    >  			return -EINVAL;
    >  
    >  		if (map.window_type == ASPEED_LPC_CTRL_WINDOW_FLASH) {
    > +			if (!lpc_ctrl->pnor_size) {
    > +				dev_dbg(dev, "Didn't find host pnor flash\n");
    > +				return -ENXIO;
    > +			}
    >  			addr = lpc_ctrl->pnor_base;
    >  			size = lpc_ctrl->pnor_size;
    >  		} else if (map.window_type == ASPEED_LPC_CTRL_WINDOW_MEMORY) {
    > +			/* If memory-region is not described in device tree */
    > +			if (!lpc_ctrl->mem_size) {
    > +				dev_dbg(dev, "Didn't find reserved memory\n");
    > +				return -ENXIO;
    > +			}
    >  			addr = lpc_ctrl->mem_base;
    >  			size = lpc_ctrl->mem_size;
    >  		} else {
    > @@ -196,17 +212,17 @@ static int aspeed_lpc_ctrl_probe(struct 
    > platform_device *pdev)
    >  	if (!lpc_ctrl)
    >  		return -ENOMEM;
    >  
    > +	/* If flash is described in device tree then store */
    >  	node = of_parse_phandle(dev->of_node, "flash", 0);
    >  	if (!node) {
    > -		dev_err(dev, "Didn't find host pnor flash node\n");
    > -		return -ENODEV;
    > -	}
    > -
    > -	rc = of_address_to_resource(node, 1, &resm);
    > -	of_node_put(node);
    > -	if (rc) {
    > -		dev_err(dev, "Couldn't address to resource for flash\n");
    > -		return rc;
    > +		dev_dbg(dev, "Didn't find host pnor flash node\n");
    > +	} else {
    > +		rc = of_address_to_resource(node, 1, &resm);
    > +		of_node_put(node);
    > +		if (rc) {
    > +			dev_err(dev, "Couldn't address to resource for flash\n");
    > +			return rc;
    > +		}
    >  	}
    >  
    >  	lpc_ctrl->pnor_size = resource_size(&resm);
    > @@ -214,22 +230,22 @@ static int aspeed_lpc_ctrl_probe(struct 
    > platform_device *pdev)
    >  
    >  	dev_set_drvdata(&pdev->dev, lpc_ctrl);
    >  
    > +	/* If memory-region is described in device tree then store */
    >  	node = of_parse_phandle(dev->of_node, "memory-region", 0);
    >  	if (!node) {
    > -		dev_err(dev, "Didn't find reserved memory\n");
    > -		return -EINVAL;
    > -	}
    > +		dev_dbg(dev, "Didn't find reserved memory\n");
    > +	} else {
    > +		rc = of_address_to_resource(node, 0, &resm);
    > +		of_node_put(node);
    > +		if (rc) {
    > +			dev_err(dev, "Couldn't address to resource for reserved memory\n");
    > +			return -ENXIO;
    > +		}
    >  
    > -	rc = of_address_to_resource(node, 0, &resm);
    > -	of_node_put(node);
    > -	if (rc) {
    > -		dev_err(dev, "Couldn't address to resource for reserved memory\n");
    > -		return -ENOMEM;
    > +		lpc_ctrl->mem_size = resource_size(&resm);
    > +		lpc_ctrl->mem_base = resm.start;
    >  	}
    >  
    > -	lpc_ctrl->mem_size = resource_size(&resm);
    > -	lpc_ctrl->mem_base = resm.start;
    > -
    >  	lpc_ctrl->regmap = syscon_node_to_regmap(
    >  			pdev->dev.parent->of_node);
    >  	if (IS_ERR(lpc_ctrl->regmap)) {
    > @@ -258,8 +274,6 @@ static int aspeed_lpc_ctrl_probe(struct 
    > platform_device *pdev)
    >  		goto err;
    >  	}
    >  
    > -	dev_info(dev, "Loaded at %pr\n", &resm);
    > -
    >  	return 0;
    >  
    >  err:
    > -- 
    > 2.17.1
    > 
    >
    


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2019-05-30 20:38 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-29 17:21 [PATCH] soc: aspeed: lpc-ctrl: make parameter optional Vijay Khemka
2019-05-30  4:02 ` Andrew Jeffery
2019-05-30 20:37   ` Vijay Khemka

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