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

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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@xxxxxxxxxxxxxxxxxx>

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)


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