+++ /dev/null
-From 132f95016db0a0a0659e99b471a7d3fd0c60f961 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Wed, 24 Mar 2021 09:19:05 +0100
-Subject: [PATCH 04/22] pinctrl: bcm: add bcm63xx base code
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Add a helper for registering BCM63XX pin controllers.
-
-Co-developed-by: Jonas Gorski <jonas.gorski@gmail.com>
-Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
-Link: https://lore.kernel.org/r/20210324081923.20379-5-noltari@gmail.com
-Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
----
- drivers/pinctrl/bcm/Kconfig | 7 ++
- drivers/pinctrl/bcm/Makefile | 1 +
- drivers/pinctrl/bcm/pinctrl-bcm63xx.c | 109 ++++++++++++++++++++++++++
- drivers/pinctrl/bcm/pinctrl-bcm63xx.h | 43 ++++++++++
- 4 files changed, 160 insertions(+)
- create mode 100644 drivers/pinctrl/bcm/pinctrl-bcm63xx.c
- create mode 100644 drivers/pinctrl/bcm/pinctrl-bcm63xx.h
-
---- a/drivers/pinctrl/bcm/Kconfig
-+++ b/drivers/pinctrl/bcm/Kconfig
-@@ -29,6 +29,13 @@ config PINCTRL_BCM2835
- help
- Say Y here to enable the Broadcom BCM2835 GPIO driver.
-
-+config PINCTRL_BCM63XX
-+ bool
-+ select GENERIC_PINCONF
-+ select GPIO_REGMAP
-+ select PINCONF
-+ select PINMUX
-+
- config PINCTRL_IPROC_GPIO
- bool "Broadcom iProc GPIO (with PINCONF) driver"
- depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
---- a/drivers/pinctrl/bcm/Makefile
-+++ b/drivers/pinctrl/bcm/Makefile
-@@ -3,6 +3,7 @@
-
- obj-$(CONFIG_PINCTRL_BCM281XX) += pinctrl-bcm281xx.o
- obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o
-+obj-$(CONFIG_PINCTRL_BCM63XX) += pinctrl-bcm63xx.o
- obj-$(CONFIG_PINCTRL_IPROC_GPIO) += pinctrl-iproc-gpio.o
- obj-$(CONFIG_PINCTRL_CYGNUS_MUX) += pinctrl-cygnus-mux.o
- obj-$(CONFIG_PINCTRL_NS) += pinctrl-ns.o
---- /dev/null
-+++ b/drivers/pinctrl/bcm/pinctrl-bcm63xx.c
-@@ -0,0 +1,109 @@
-+// SPDX-License-Identifier: GPL-2.0+
-+/*
-+ * Driver for BCM63xx GPIO unit (pinctrl + GPIO)
-+ *
-+ * Copyright (C) 2021 Álvaro Fernández Rojas <noltari@gmail.com>
-+ * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com>
-+ */
-+
-+#include <linux/gpio/regmap.h>
-+#include <linux/mfd/syscon.h>
-+#include <linux/mod_devicetable.h>
-+#include <linux/of.h>
-+#include <linux/platform_device.h>
-+
-+#include "pinctrl-bcm63xx.h"
-+
-+#define BCM63XX_BANK_SIZE 4
-+
-+#define BCM63XX_DIROUT_REG 0x04
-+#define BCM63XX_DATA_REG 0x0c
-+
-+static int bcm63xx_reg_mask_xlate(struct gpio_regmap *gpio,
-+ unsigned int base, unsigned int offset,
-+ unsigned int *reg, unsigned int *mask)
-+{
-+ unsigned int line = offset % BCM63XX_BANK_GPIOS;
-+ unsigned int stride = offset / BCM63XX_BANK_GPIOS;
-+
-+ *reg = base - stride * BCM63XX_BANK_SIZE;
-+ *mask = BIT(line);
-+
-+ return 0;
-+}
-+
-+static const struct of_device_id bcm63xx_gpio_of_match[] = {
-+ { .compatible = "brcm,bcm6318-gpio", },
-+ { .compatible = "brcm,bcm6328-gpio", },
-+ { .compatible = "brcm,bcm6358-gpio", },
-+ { .compatible = "brcm,bcm6362-gpio", },
-+ { .compatible = "brcm,bcm6368-gpio", },
-+ { .compatible = "brcm,bcm63268-gpio", },
-+ { /* sentinel */ }
-+};
-+
-+static int bcm63xx_gpio_probe(struct device *dev, struct device_node *node,
-+ const struct bcm63xx_pinctrl_soc *soc,
-+ struct bcm63xx_pinctrl *pc)
-+{
-+ struct gpio_regmap_config grc = {0};
-+
-+ grc.parent = dev;
-+ grc.fwnode = &node->fwnode;
-+ grc.ngpio = soc->ngpios;
-+ grc.ngpio_per_reg = BCM63XX_BANK_GPIOS;
-+ grc.regmap = pc->regs;
-+ grc.reg_dat_base = BCM63XX_DATA_REG;
-+ grc.reg_dir_out_base = BCM63XX_DIROUT_REG;
-+ grc.reg_set_base = BCM63XX_DATA_REG;
-+ grc.reg_mask_xlate = bcm63xx_reg_mask_xlate;
-+
-+ return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(dev, &grc));
-+}
-+
-+int bcm63xx_pinctrl_probe(struct platform_device *pdev,
-+ const struct bcm63xx_pinctrl_soc *soc,
-+ void *driver_data)
-+{
-+ struct device *dev = &pdev->dev;
-+ struct bcm63xx_pinctrl *pc;
-+ struct device_node *node;
-+ int err;
-+
-+ pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
-+ if (!pc)
-+ return -ENOMEM;
-+
-+ platform_set_drvdata(pdev, pc);
-+
-+ pc->dev = dev;
-+ pc->driver_data = driver_data;
-+
-+ pc->regs = syscon_node_to_regmap(dev->parent->of_node);
-+ if (IS_ERR(pc->regs))
-+ return PTR_ERR(pc->regs);
-+
-+ pc->pctl_desc.name = dev_name(dev);
-+ pc->pctl_desc.pins = soc->pins;
-+ pc->pctl_desc.npins = soc->npins;
-+ pc->pctl_desc.pctlops = soc->pctl_ops;
-+ pc->pctl_desc.pmxops = soc->pmx_ops;
-+ pc->pctl_desc.owner = THIS_MODULE;
-+
-+ pc->pctl_dev = devm_pinctrl_register(dev, &pc->pctl_desc, pc);
-+ if (IS_ERR(pc->pctl_dev))
-+ return PTR_ERR(pc->pctl_dev);
-+
-+ for_each_child_of_node(dev->parent->of_node, node) {
-+ if (of_match_node(bcm63xx_gpio_of_match, node)) {
-+ err = bcm63xx_gpio_probe(dev, node, soc, pc);
-+ if (err) {
-+ dev_err(dev, "could not add GPIO chip\n");
-+ of_node_put(node);
-+ return err;
-+ }
-+ }
-+ }
-+
-+ return 0;
-+}
---- /dev/null
-+++ b/drivers/pinctrl/bcm/pinctrl-bcm63xx.h
-@@ -0,0 +1,43 @@
-+// SPDX-License-Identifier: GPL-2.0+
-+/*
-+ * Copyright (C) 2021 Álvaro Fernández Rojas <noltari@gmail.com>
-+ * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com>
-+ */
-+
-+#ifndef __PINCTRL_BCM63XX_H__
-+#define __PINCTRL_BCM63XX_H__
-+
-+#include <linux/pinctrl/pinctrl.h>
-+
-+#define BCM63XX_BANK_GPIOS 32
-+
-+struct bcm63xx_pinctrl_soc {
-+ struct pinctrl_ops *pctl_ops;
-+ struct pinmux_ops *pmx_ops;
-+
-+ const struct pinctrl_pin_desc *pins;
-+ unsigned npins;
-+
-+ unsigned int ngpios;
-+};
-+
-+struct bcm63xx_pinctrl {
-+ struct device *dev;
-+ struct regmap *regs;
-+
-+ struct pinctrl_desc pctl_desc;
-+ struct pinctrl_dev *pctl_dev;
-+
-+ void *driver_data;
-+};
-+
-+static inline unsigned int bcm63xx_bank_pin(unsigned int pin)
-+{
-+ return pin % BCM63XX_BANK_GPIOS;
-+}
-+
-+int bcm63xx_pinctrl_probe(struct platform_device *pdev,
-+ const struct bcm63xx_pinctrl_soc *soc,
-+ void *driver_data);
-+
-+#endif /* __PINCTRL_BCM63XX_H__ */
projects / openwrt / staging / ldir.git / blobdiff