Re: [PATCH v2 05/10] pinctrl: berlin: use the regmap provided by syscon

[Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>]

On 06.03.2015 16:05, Antoine Tenart wrote:
> The Berlin pin controller nodes are now sub-nodes of the soc-controller
> and the system-controller nodes. The register bank is managed by syscon,
> which provides a regmap.
>
> Remove the regmap setup from the Berlin pinctrl driver and use the one
> provided by syscon.
>
> Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>

Linus,

would you mind to give your Acked-by for this and the next patch and
let me take this through Berlin and ARM-SoC tree? The patches only
touch berlin-specific subdirectories in pinctrl/ so there should be
no merge issues expected.

Sebastian

> ---
>   drivers/pinctrl/berlin/berlin-bg2.c   | 22 ----------------------
>   drivers/pinctrl/berlin/berlin-bg2cd.c | 22 ----------------------
>   drivers/pinctrl/berlin/berlin-bg2q.c  | 22 ----------------------
>   drivers/pinctrl/berlin/berlin.c       |  9 ++++++---
>   4 files changed, 6 insertions(+), 69 deletions(-)
>
> diff --git a/drivers/pinctrl/berlin/berlin-bg2.c b/drivers/pinctrl/berlin/berlin-bg2.c
> index b71a6fffef1b..368ec0b9b8ba 100644
> --- a/drivers/pinctrl/berlin/berlin-bg2.c
> +++ b/drivers/pinctrl/berlin/berlin-bg2.c
> @@ -233,28 +233,6 @@ static int berlin2_pinctrl_probe(struct platform_device *pdev)
>   {
>   	const struct of_device_id *match =
>   		of_match_device(berlin2_pinctrl_match, &pdev->dev);
> -	struct regmap_config *rmconfig;
> -	struct regmap *regmap;
> -	struct resource *res;
> -	void __iomem *base;
> -
> -	rmconfig = devm_kzalloc(&pdev->dev, sizeof(*rmconfig), GFP_KERNEL);
> -	if (!rmconfig)
> -		return -ENOMEM;
> -
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	base = devm_ioremap_resource(&pdev->dev, res);
> -	if (IS_ERR(base))
> -		return PTR_ERR(base);
> -
> -	rmconfig->reg_bits = 32,
> -	rmconfig->val_bits = 32,
> -	rmconfig->reg_stride = 4,
> -	rmconfig->max_register = resource_size(res);
> -
> -	regmap = devm_regmap_init_mmio(&pdev->dev, base, rmconfig);
> -	if (IS_ERR(regmap))
> -		return PTR_ERR(regmap);
>
>   	return berlin_pinctrl_probe(pdev, match->data);
>   }
> diff --git a/drivers/pinctrl/berlin/berlin-bg2cd.c b/drivers/pinctrl/berlin/berlin-bg2cd.c
> index 19ac5a22c947..6b9cae029ef7 100644
> --- a/drivers/pinctrl/berlin/berlin-bg2cd.c
> +++ b/drivers/pinctrl/berlin/berlin-bg2cd.c
> @@ -176,28 +176,6 @@ static int berlin2cd_pinctrl_probe(struct platform_device *pdev)
>   {
>   	const struct of_device_id *match =
>   		of_match_device(berlin2cd_pinctrl_match, &pdev->dev);
> -	struct regmap_config *rmconfig;
> -	struct regmap *regmap;
> -	struct resource *res;
> -	void __iomem *base;
> -
> -	rmconfig = devm_kzalloc(&pdev->dev, sizeof(*rmconfig), GFP_KERNEL);
> -	if (!rmconfig)
> -		return -ENOMEM;
> -
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	base = devm_ioremap_resource(&pdev->dev, res);
> -	if (IS_ERR(base))
> -		return PTR_ERR(base);
> -
> -	rmconfig->reg_bits = 32,
> -	rmconfig->val_bits = 32,
> -	rmconfig->reg_stride = 4,
> -	rmconfig->max_register = resource_size(res);
> -
> -	regmap = devm_regmap_init_mmio(&pdev->dev, base, rmconfig);
> -	if (IS_ERR(regmap))
> -		return PTR_ERR(regmap);
>
>   	return berlin_pinctrl_probe(pdev, match->data);
>   }
> diff --git a/drivers/pinctrl/berlin/berlin-bg2q.c b/drivers/pinctrl/berlin/berlin-bg2q.c
> index bd9662e57ad3..11aa10cc0e3e 100644
> --- a/drivers/pinctrl/berlin/berlin-bg2q.c
> +++ b/drivers/pinctrl/berlin/berlin-bg2q.c
> @@ -395,28 +395,6 @@ static int berlin2q_pinctrl_probe(struct platform_device *pdev)
>   {
>   	const struct of_device_id *match =
>   		of_match_device(berlin2q_pinctrl_match, &pdev->dev);
> -	struct regmap_config *rmconfig;
> -	struct regmap *regmap;
> -	struct resource *res;
> -	void __iomem *base;
> -
> -	rmconfig = devm_kzalloc(&pdev->dev, sizeof(*rmconfig), GFP_KERNEL);
> -	if (!rmconfig)
> -		return -ENOMEM;
> -
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	base = devm_ioremap_resource(&pdev->dev, res);
> -	if (IS_ERR(base))
> -		return PTR_ERR(base);
> -
> -	rmconfig->reg_bits = 32,
> -	rmconfig->val_bits = 32,
> -	rmconfig->reg_stride = 4,
> -	rmconfig->max_register = resource_size(res);
> -
> -	regmap = devm_regmap_init_mmio(&pdev->dev, base, rmconfig);
> -	if (IS_ERR(regmap))
> -		return PTR_ERR(regmap);
>
>   	return berlin_pinctrl_probe(pdev, match->data);
>   }
> diff --git a/drivers/pinctrl/berlin/berlin.c b/drivers/pinctrl/berlin/berlin.c
> index 7f0b0f93242b..2e3a8b8858ec 100644
> --- a/drivers/pinctrl/berlin/berlin.c
> +++ b/drivers/pinctrl/berlin/berlin.c
> @@ -12,6 +12,7 @@
>
>   #include <linux/io.h>
>   #include <linux/module.h>
> +#include <linux/mfd/syscon.h>
>   #include <linux/of.h>
>   #include <linux/of_address.h>
>   #include <linux/of_device.h>
> @@ -295,13 +296,15 @@ int berlin_pinctrl_probe(struct platform_device *pdev,
>   			 const struct berlin_pinctrl_desc *desc)
>   {
>   	struct device *dev = &pdev->dev;
> +	struct device_node *parent_np = of_get_parent(dev->of_node);
>   	struct berlin_pinctrl *pctrl;
>   	struct regmap *regmap;
>   	int ret;
>
> -	regmap = dev_get_regmap(&pdev->dev, NULL);
> -	if (!regmap)
> -		return -ENODEV;
> +	regmap = syscon_node_to_regmap(parent_np);
> +	of_node_put(parent_np);
> +	if (IS_ERR(regmap))
> +		return PTR_ERR(regmap);
>
>   	pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL);
>   	if (!pctrl)
>