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authorRafał Miłecki <rafal@milecki.pl>2018-12-25 15:51:33 +0100
committerRafał Miłecki <rafal@milecki.pl>2018-12-25 15:52:37 +0100
commita28f6ab27f9ae1a08c6945013cdb796b12ce150d (patch)
tree2b7c2a856eacac94b9768185413043b0c6520e50 /target/linux/bcm53xx/patches-4.14/084-v4.21-pinctrl-bcm-ns-support-updated-DT-binding-as-syscon-.patch
parent8f4841462cd392cc7dc0c1dba6c8c3a0d4b68910 (diff)
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bcm53xx: update pinctrl driver & use its new DT binding
Driver has been updated upstream to support more precise DT binding and avoid mapping conflicts between pinctrl and USB 2.0 PHY. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'target/linux/bcm53xx/patches-4.14/084-v4.21-pinctrl-bcm-ns-support-updated-DT-binding-as-syscon-.patch')
-rw-r--r--target/linux/bcm53xx/patches-4.14/084-v4.21-pinctrl-bcm-ns-support-updated-DT-binding-as-syscon-.patch99
1 files changed, 99 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-4.14/084-v4.21-pinctrl-bcm-ns-support-updated-DT-binding-as-syscon-.patch b/target/linux/bcm53xx/patches-4.14/084-v4.21-pinctrl-bcm-ns-support-updated-DT-binding-as-syscon-.patch
new file mode 100644
index 0000000000..45595bddc9
--- /dev/null
+++ b/target/linux/bcm53xx/patches-4.14/084-v4.21-pinctrl-bcm-ns-support-updated-DT-binding-as-syscon-.patch
@@ -0,0 +1,99 @@
+From a49d784d5a8272d0f63c448fe8dc69e589db006e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 18 Dec 2018 16:58:08 +0100
+Subject: [PATCH] pinctrl: bcm: ns: support updated DT binding as syscon
+ subnode
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Documentation has been recently updated specifying that pinctrl should
+be subnode of the CRU "syscon". Support that by using parent node for
+regmap and reading "offset" property from the DT.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ drivers/pinctrl/bcm/pinctrl-ns.c | 29 +++++++++++++++++++----------
+ 1 file changed, 19 insertions(+), 10 deletions(-)
+
+--- a/drivers/pinctrl/bcm/pinctrl-ns.c
++++ b/drivers/pinctrl/bcm/pinctrl-ns.c
+@@ -5,6 +5,7 @@
+
+ #include <linux/err.h>
+ #include <linux/io.h>
++#include <linux/mfd/syscon.h>
+ #include <linux/module.h>
+ #include <linux/of.h>
+ #include <linux/of_device.h>
+@@ -12,6 +13,7 @@
+ #include <linux/pinctrl/pinctrl.h>
+ #include <linux/pinctrl/pinmux.h>
+ #include <linux/platform_device.h>
++#include <linux/regmap.h>
+ #include <linux/slab.h>
+
+ #define FLAG_BCM4708 BIT(1)
+@@ -22,7 +24,8 @@ struct ns_pinctrl {
+ struct device *dev;
+ unsigned int chipset_flag;
+ struct pinctrl_dev *pctldev;
+- void __iomem *base;
++ struct regmap *regmap;
++ u32 offset;
+
+ struct pinctrl_desc pctldesc;
+ struct ns_pinctrl_group *groups;
+@@ -229,9 +232,9 @@ static int ns_pinctrl_set_mux(struct pin
+ unset |= BIT(pin_number);
+ }
+
+- tmp = readl(ns_pinctrl->base);
++ regmap_read(ns_pinctrl->regmap, ns_pinctrl->offset, &tmp);
+ tmp &= ~unset;
+- writel(tmp, ns_pinctrl->base);
++ regmap_write(ns_pinctrl->regmap, ns_pinctrl->offset, tmp);
+
+ return 0;
+ }
+@@ -263,13 +266,13 @@ static const struct of_device_id ns_pinc
+ static int ns_pinctrl_probe(struct platform_device *pdev)
+ {
+ struct device *dev = &pdev->dev;
++ struct device_node *np = dev->of_node;
+ const struct of_device_id *of_id;
+ struct ns_pinctrl *ns_pinctrl;
+ struct pinctrl_desc *pctldesc;
+ struct pinctrl_pin_desc *pin;
+ struct ns_pinctrl_group *group;
+ struct ns_pinctrl_function *function;
+- struct resource *res;
+ int i;
+
+ ns_pinctrl = devm_kzalloc(dev, sizeof(*ns_pinctrl), GFP_KERNEL);
+@@ -287,12 +290,18 @@ static int ns_pinctrl_probe(struct platf
+ return -EINVAL;
+ ns_pinctrl->chipset_flag = (uintptr_t)of_id->data;
+
+- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+- "cru_gpio_control");
+- ns_pinctrl->base = devm_ioremap_resource(dev, res);
+- if (IS_ERR(ns_pinctrl->base)) {
+- dev_err(dev, "Failed to map pinctrl regs\n");
+- return PTR_ERR(ns_pinctrl->base);
++ ns_pinctrl->regmap = syscon_node_to_regmap(of_get_parent(np));
++ if (IS_ERR(ns_pinctrl->regmap)) {
++ int err = PTR_ERR(ns_pinctrl->regmap);
++
++ dev_err(dev, "Failed to map pinctrl regs: %d\n", err);
++
++ return err;
++ }
++
++ if (of_property_read_u32(np, "offset", &ns_pinctrl->offset)) {
++ dev_err(dev, "Failed to get register offset\n");
++ return -ENOENT;
+ }
+
+ memcpy(pctldesc, &ns_pinctrl_desc, sizeof(*pctldesc));