diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.4/130-pinctrl-add-bcm63xx-base-code.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-4.4/130-pinctrl-add-bcm63xx-base-code.patch | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/130-pinctrl-add-bcm63xx-base-code.patch b/target/linux/brcm63xx/patches-4.4/130-pinctrl-add-bcm63xx-base-code.patch new file mode 100644 index 0000000000..57614c2707 --- /dev/null +++ b/target/linux/brcm63xx/patches-4.4/130-pinctrl-add-bcm63xx-base-code.patch @@ -0,0 +1,226 @@ +From ab2f33e35e35905a76204138143875251f3e1088 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jonas.gorski@gmail.com> +Date: Fri, 24 Jun 2016 22:07:42 +0200 +Subject: [PATCH 01/13] pinctrl: add bcm63xx base code + +Setup directory and add a helper for bcm63xx pinctrl support. + +Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> +--- + drivers/pinctrl/Kconfig | 1 + + drivers/pinctrl/Makefile | 1 + + drivers/pinctrl/bcm63xx/Kconfig | 3 + + drivers/pinctrl/bcm63xx/Makefile | 1 + + drivers/pinctrl/bcm63xx/pinctrl-bcm63xx.c | 142 ++++++++++++++++++++++++++++++ + drivers/pinctrl/bcm63xx/pinctrl-bcm63xx.h | 14 +++ + 7 files changed, 163 insertions(+) + create mode 100644 drivers/pinctrl/bcm63xx/Kconfig + create mode 100644 drivers/pinctrl/bcm63xx/Makefile + create mode 100644 drivers/pinctrl/bcm63xx/pinctrl-bcm63xx.c + create mode 100644 drivers/pinctrl/bcm63xx/pinctrl-bcm63xx.h + +--- a/drivers/pinctrl/Kconfig ++++ b/drivers/pinctrl/Kconfig +@@ -247,6 +247,7 @@ config PINCTRL_ZYNQ + This selectes the pinctrl driver for Xilinx Zynq. + + source "drivers/pinctrl/bcm/Kconfig" ++source "drivers/pinctrl/bcm63xx/Kconfig" + source "drivers/pinctrl/berlin/Kconfig" + source "drivers/pinctrl/freescale/Kconfig" + source "drivers/pinctrl/intel/Kconfig" +--- a/drivers/pinctrl/Makefile ++++ b/drivers/pinctrl/Makefile +@@ -41,6 +41,7 @@ obj-$(CONFIG_PINCTRL_ST) += pinctrl-st. + obj-$(CONFIG_PINCTRL_ZYNQ) += pinctrl-zynq.o + + obj-$(CONFIG_ARCH_BCM) += bcm/ ++obj-y += bcm63xx/ + obj-$(CONFIG_ARCH_BERLIN) += berlin/ + obj-y += freescale/ + obj-$(CONFIG_X86) += intel/ +--- /dev/null ++++ b/drivers/pinctrl/bcm63xx/Kconfig +@@ -0,0 +1,3 @@ ++config PINCTRL_BCM63XX ++ bool ++ select GPIO_GENERIC +--- /dev/null ++++ b/drivers/pinctrl/bcm63xx/Makefile +@@ -0,0 +1 @@ ++obj-$(CONFIG_PINCTRL_BCM63XX) += pinctrl-bcm63xx.o +--- /dev/null ++++ b/drivers/pinctrl/bcm63xx/pinctrl-bcm63xx.c +@@ -0,0 +1,155 @@ ++/* ++ * This file is subject to the terms and conditions of the GNU General Public ++ * License. See the file "COPYING" in the main directory of this archive ++ * for more details. ++ * ++ * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com> ++ */ ++ ++#include <linux/bitops.h> ++#include <linux/device.h> ++#include <linux/gpio/driver.h> ++#include <linux/of_irq.h> ++ ++#include "pinctrl-bcm63xx.h" ++#include "../core.h" ++ ++#define BANK_SIZE sizeof(u32) ++#define PINS_PER_BANK (BANK_SIZE * BITS_PER_BYTE) ++ ++#ifdef CONFIG_OF ++static int bcm63xx_gpio_of_xlate(struct gpio_chip *gc, ++ const struct of_phandle_args *gpiospec, ++ u32 *flags) ++{ ++ struct gpio_chip *base = gpiochip_get_data(gc); ++ int pin = gpiospec->args[0]; ++ ++ if (gc != &base[pin / PINS_PER_BANK]) ++ return -EINVAL; ++ ++ pin = pin % PINS_PER_BANK; ++ ++ if (pin >= gc->ngpio) ++ return -EINVAL; ++ ++ if (flags) ++ *flags = gpiospec->args[1]; ++ ++ return pin; ++} ++#endif ++ ++static int bcm63xx_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) ++{ ++ struct gpio_chip *base = gpiochip_get_data(chip); ++ char irq_name[7]; /* "gpioXX" */ ++ ++ /* FIXME: this is ugly */ ++ sprintf(irq_name, "gpio%d", gpio + PINS_PER_BANK * (chip - base)); ++ return of_irq_get_byname(chip->of_node, irq_name); ++} ++ ++static int bcm63xx_setup_gpio(struct device *dev, struct gpio_chip *gc, ++ void __iomem *dirout, void __iomem *data, ++ size_t sz, int ngpio) ++ ++{ ++ int banks, chips, i, ret = -EINVAL; ++ ++ chips = DIV_ROUND_UP(ngpio, PINS_PER_BANK); ++ banks = sz / BANK_SIZE; ++ ++ for (i = 0; i < chips; i++) { ++ int offset, pins; ++ int reg_offset; ++ char *label; ++ ++ label = devm_kasprintf(dev, GFP_KERNEL, "bcm63xx-gpio.%i", i); ++ if (!label) ++ return -ENOMEM; ++ ++ offset = i * PINS_PER_BANK; ++ pins = min_t(int, ngpio - offset, PINS_PER_BANK); ++ ++ /* the registers are treated like a huge big endian register */ ++ reg_offset = (banks - i - 1) * BANK_SIZE; ++ ++ ret = bgpio_init(&gc[i], dev, BANK_SIZE, data + reg_offset, ++ NULL, NULL, dirout + reg_offset, NULL, ++ BGPIOF_BIG_ENDIAN_BYTE_ORDER); ++ if (ret) ++ return ret; ++ ++ gc[i].request = gpiochip_generic_request; ++ gc[i].free = gpiochip_generic_free; ++ ++ if (of_get_property(dev->of_node, "interrupt-names", NULL)) ++ gc[i].to_irq = bcm63xx_gpio_to_irq; ++ ++#ifdef CONFIG_OF ++ gc[i].of_gpio_n_cells = 2; ++ gc[i].of_xlate = bcm63xx_gpio_of_xlate; ++#endif ++ ++ gc[i].label = label; ++ gc[i].ngpio = pins; ++ ++ devm_gpiochip_add_data(dev, &gc[i], gc); ++ } ++ ++ return 0; ++} ++ ++static void bcm63xx_setup_pinranges(struct gpio_chip *gc, const char *name, ++ int ngpio) ++{ ++ int i, chips = DIV_ROUND_UP(ngpio, PINS_PER_BANK); ++ ++ for (i = 0; i < chips; i++) { ++ int offset, pins; ++ ++ offset = i * PINS_PER_BANK; ++ pins = min_t(int, ngpio - offset, PINS_PER_BANK); ++ ++ gpiochip_add_pin_range(&gc[i], name, 0, offset, pins); ++ } ++} ++ ++struct pinctrl_dev *bcm63xx_pinctrl_register(struct platform_device *pdev, ++ struct pinctrl_desc *desc, ++ void *priv, struct gpio_chip *gc, ++ int ngpio) ++{ ++ struct pinctrl_dev *pctldev; ++ struct resource *res; ++ void __iomem *dirout, *data; ++ size_t sz; ++ int ret; ++ ++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dirout"); ++ dirout = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(dirout)) ++ return ERR_CAST(dirout); ++ ++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dat"); ++ data = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(data)) ++ return ERR_CAST(data); ++ ++ sz = resource_size(res); ++ ++ ret = bcm63xx_setup_gpio(&pdev->dev, gc, dirout, data, sz, ngpio); ++ if (ret) ++ return ERR_PTR(ret); ++ ++ pctldev = devm_pinctrl_register(&pdev->dev, desc, priv); ++ if (IS_ERR(pctldev)) ++ return pctldev; ++ ++ bcm63xx_setup_pinranges(gc, pinctrl_dev_get_devname(pctldev), ngpio); ++ ++ dev_info(&pdev->dev, "registered at mmio %p\n", dirout); ++ ++ return pctldev; ++} +--- /dev/null ++++ b/drivers/pinctrl/bcm63xx/pinctrl-bcm63xx.h +@@ -0,0 +1,14 @@ ++#ifndef __PINCTRL_BCM63XX ++#define __PINCTRL_BCM63XX ++ ++#include <linux/kernel.h> ++#include <linux/gpio.h> ++#include <linux/pinctrl/pinctrl.h> ++#include <linux/platform_device.h> ++ ++struct pinctrl_dev *bcm63xx_pinctrl_register(struct platform_device *pdev, ++ struct pinctrl_desc *desc, ++ void *priv, struct gpio_chip *gc, ++ int ngpio); ++ ++#endif |