mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 10:08:59 +00:00
eef6bd3393
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>
(cherry picked from commit a28f6ab27f)
100 lines
3.1 KiB
Diff
100 lines
3.1 KiB
Diff
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));
|