From 25b5d794f4278297bde22e4f4822c93b89768b82 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 7 Mar 2016 16:33:34 +0000 Subject: ramips: add linux 4.4 support, update mt7621 subtarget to 4.4 Signed-off-by: Felix Fietkau git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48951 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../0025-pinctrl-ralink-add-pinctrl-driver.patch | 524 +++++++++++++++++++++ 1 file changed, 524 insertions(+) create mode 100644 target/linux/ramips/patches-4.4/0025-pinctrl-ralink-add-pinctrl-driver.patch (limited to 'target/linux/ramips/patches-4.4/0025-pinctrl-ralink-add-pinctrl-driver.patch') diff --git a/target/linux/ramips/patches-4.4/0025-pinctrl-ralink-add-pinctrl-driver.patch b/target/linux/ramips/patches-4.4/0025-pinctrl-ralink-add-pinctrl-driver.patch new file mode 100644 index 0000000000..315d9563bc --- /dev/null +++ b/target/linux/ramips/patches-4.4/0025-pinctrl-ralink-add-pinctrl-driver.patch @@ -0,0 +1,524 @@ +From 7adbe9a88c33c6e362a10b109d963b5500a21f00 Mon Sep 17 00:00:00 2001 +From: John Crispin +Date: Sun, 27 Jul 2014 09:34:05 +0100 +Subject: [PATCH 25/53] pinctrl: ralink: add pinctrl driver + +Signed-off-by: John Crispin +--- + arch/mips/Kconfig | 2 + + drivers/pinctrl/Kconfig | 5 + + drivers/pinctrl/Makefile | 1 + + drivers/pinctrl/pinctrl-rt2880.c | 474 ++++++++++++++++++++++++++++++++++++++ + 4 files changed, 482 insertions(+) + create mode 100644 drivers/pinctrl/pinctrl-rt2880.c + +--- a/arch/mips/Kconfig ++++ b/arch/mips/Kconfig +@@ -585,6 +585,8 @@ config RALINK + select CLKDEV_LOOKUP + select ARCH_HAS_RESET_CONTROLLER + select RESET_CONTROLLER ++ select PINCTRL ++ select PINCTRL_RT2880 + + config SGI_IP22 + bool "SGI IP22 (Indy/Indigo2)" +--- a/drivers/pinctrl/Kconfig ++++ b/drivers/pinctrl/Kconfig +@@ -114,6 +114,11 @@ config PINCTRL_LPC18XX + help + Pinctrl driver for NXP LPC18xx/43xx System Control Unit (SCU). + ++config PINCTRL_RT2880 ++ bool ++ depends on RALINK ++ select PINMUX ++ + config PINCTRL_FALCON + bool + depends on SOC_FALCON +--- a/drivers/pinctrl/Makefile ++++ b/drivers/pinctrl/Makefile +@@ -20,6 +20,7 @@ obj-$(CONFIG_PINCTRL_MESON) += meson/ + obj-$(CONFIG_PINCTRL_PALMAS) += pinctrl-palmas.o + obj-$(CONFIG_PINCTRL_PISTACHIO) += pinctrl-pistachio.o + obj-$(CONFIG_PINCTRL_ROCKCHIP) += pinctrl-rockchip.o ++obj-$(CONFIG_PINCTRL_RT2880) += pinctrl-rt2880.o + obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o + obj-$(CONFIG_PINCTRL_SIRF) += sirf/ + obj-$(CONFIG_PINCTRL_TEGRA) += pinctrl-tegra.o +--- /dev/null ++++ b/drivers/pinctrl/pinctrl-rt2880.c +@@ -0,0 +1,472 @@ ++/* ++ * linux/drivers/pinctrl/pinctrl-rt2880.c ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * publishhed by the Free Software Foundation. ++ * ++ * Copyright (C) 2013 John Crispin ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++#include ++#include ++ ++#include "core.h" ++ ++#define SYSC_REG_GPIO_MODE 0x60 ++#define SYSC_REG_GPIO_MODE2 0x64 ++ ++struct rt2880_priv { ++ struct device *dev; ++ ++ struct pinctrl_pin_desc *pads; ++ struct pinctrl_desc *desc; ++ ++ struct rt2880_pmx_func **func; ++ int func_count; ++ ++ struct rt2880_pmx_group *groups; ++ const char **group_names; ++ int group_count; ++ ++ uint8_t *gpio; ++ int max_pins; ++}; ++ ++static int rt2880_get_group_count(struct pinctrl_dev *pctrldev) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ ++ return p->group_count; ++} ++ ++static const char *rt2880_get_group_name(struct pinctrl_dev *pctrldev, ++ unsigned group) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ ++ if (group >= p->group_count) ++ return NULL; ++ ++ return p->group_names[group]; ++} ++ ++static int rt2880_get_group_pins(struct pinctrl_dev *pctrldev, ++ unsigned group, ++ const unsigned **pins, ++ unsigned *num_pins) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ ++ if (group >= p->group_count) ++ return -EINVAL; ++ ++ *pins = p->groups[group].func[0].pins; ++ *num_pins = p->groups[group].func[0].pin_count; ++ ++ return 0; ++} ++ ++static void rt2880_pinctrl_dt_free_map(struct pinctrl_dev *pctrldev, ++ struct pinctrl_map *map, unsigned num_maps) ++{ ++ int i; ++ ++ for (i = 0; i < num_maps; i++) ++ if (map[i].type == PIN_MAP_TYPE_CONFIGS_PIN || ++ map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP) ++ kfree(map[i].data.configs.configs); ++ kfree(map); ++} ++ ++static void rt2880_pinctrl_pin_dbg_show(struct pinctrl_dev *pctrldev, ++ struct seq_file *s, ++ unsigned offset) ++{ ++ seq_printf(s, "ralink pio"); ++} ++ ++static void rt2880_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctrldev, ++ struct device_node *np, ++ struct pinctrl_map **map) ++{ ++ const char *function; ++ int func = of_property_read_string(np, "ralink,function", &function); ++ int grps = of_property_count_strings(np, "ralink,group"); ++ int i; ++ ++ if (func || !grps) ++ return; ++ ++ for (i = 0; i < grps; i++) { ++ const char *group; ++ ++ of_property_read_string_index(np, "ralink,group", i, &group); ++ ++ (*map)->type = PIN_MAP_TYPE_MUX_GROUP; ++ (*map)->name = function; ++ (*map)->data.mux.group = group; ++ (*map)->data.mux.function = function; ++ (*map)++; ++ } ++} ++ ++static int rt2880_pinctrl_dt_node_to_map(struct pinctrl_dev *pctrldev, ++ struct device_node *np_config, ++ struct pinctrl_map **map, ++ unsigned *num_maps) ++{ ++ int max_maps = 0; ++ struct pinctrl_map *tmp; ++ struct device_node *np; ++ ++ for_each_child_of_node(np_config, np) { ++ int ret = of_property_count_strings(np, "ralink,group"); ++ ++ if (ret >= 0) ++ max_maps += ret; ++ } ++ ++ if (!max_maps) ++ return max_maps; ++ ++ *map = kzalloc(max_maps * sizeof(struct pinctrl_map), GFP_KERNEL); ++ if (!*map) ++ return -ENOMEM; ++ ++ tmp = *map; ++ ++ for_each_child_of_node(np_config, np) ++ rt2880_pinctrl_dt_subnode_to_map(pctrldev, np, &tmp); ++ *num_maps = max_maps; ++ ++ return 0; ++} ++ ++static const struct pinctrl_ops rt2880_pctrl_ops = { ++ .get_groups_count = rt2880_get_group_count, ++ .get_group_name = rt2880_get_group_name, ++ .get_group_pins = rt2880_get_group_pins, ++ .pin_dbg_show = rt2880_pinctrl_pin_dbg_show, ++ .dt_node_to_map = rt2880_pinctrl_dt_node_to_map, ++ .dt_free_map = rt2880_pinctrl_dt_free_map, ++}; ++ ++static int rt2880_pmx_func_count(struct pinctrl_dev *pctrldev) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ ++ return p->func_count; ++} ++ ++static const char *rt2880_pmx_func_name(struct pinctrl_dev *pctrldev, ++ unsigned func) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ ++ return p->func[func]->name; ++} ++ ++static int rt2880_pmx_group_get_groups(struct pinctrl_dev *pctrldev, ++ unsigned func, ++ const char * const **groups, ++ unsigned * const num_groups) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ ++ if (p->func[func]->group_count == 1) ++ *groups = &p->group_names[p->func[func]->groups[0]]; ++ else ++ *groups = p->group_names; ++ ++ *num_groups = p->func[func]->group_count; ++ ++ return 0; ++} ++ ++static int rt2880_pmx_group_enable(struct pinctrl_dev *pctrldev, ++ unsigned func, ++ unsigned group) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ u32 mode = 0; ++ u32 reg = SYSC_REG_GPIO_MODE; ++ int i; ++ int shift; ++ ++ /* dont allow double use */ ++ if (p->groups[group].enabled) { ++ dev_err(p->dev, "%s is already enabled\n", p->groups[group].name); ++ return -EBUSY; ++ } ++ ++ p->groups[group].enabled = 1; ++ p->func[func]->enabled = 1; ++ ++ shift = p->groups[group].shift; ++ if (shift >= 32) { ++ shift -= 32; ++ reg = SYSC_REG_GPIO_MODE2; ++ } ++ mode = rt_sysc_r32(reg); ++ mode &= ~(p->groups[group].mask << shift); ++ ++ /* mark the pins as gpio */ ++ for (i = 0; i < p->groups[group].func[0].pin_count; i++) ++ p->gpio[p->groups[group].func[0].pins[i]] = 1; ++ ++ /* function 0 is gpio and needs special handling */ ++ if (func == 0) { ++ mode |= p->groups[group].gpio << shift; ++ } else { ++ for (i = 0; i < p->func[func]->pin_count; i++) ++ p->gpio[p->func[func]->pins[i]] = 0; ++ mode |= p->func[func]->value << shift; ++ } ++ rt_sysc_w32(mode, reg); ++ ++ return 0; ++} ++ ++static int rt2880_pmx_group_gpio_request_enable(struct pinctrl_dev *pctrldev, ++ struct pinctrl_gpio_range *range, ++ unsigned pin) ++{ ++ struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev); ++ ++ if (!p->gpio[pin]) { ++ dev_err(p->dev, "pin %d is not set to gpio mux\n", pin); ++ return -EINVAL; ++ } ++ ++ return 0; ++} ++ ++static const struct pinmux_ops rt2880_pmx_group_ops = { ++ .get_functions_count = rt2880_pmx_func_count, ++ .get_function_name = rt2880_pmx_func_name, ++ .get_function_groups = rt2880_pmx_group_get_groups, ++ .set_mux = rt2880_pmx_group_enable, ++ .gpio_request_enable = rt2880_pmx_group_gpio_request_enable, ++}; ++ ++static struct pinctrl_desc rt2880_pctrl_desc = { ++ .owner = THIS_MODULE, ++ .name = "rt2880-pinmux", ++ .pctlops = &rt2880_pctrl_ops, ++ .pmxops = &rt2880_pmx_group_ops, ++}; ++ ++static struct rt2880_pmx_func gpio_func = { ++ .name = "gpio", ++}; ++ ++static int rt2880_pinmux_index(struct rt2880_priv *p) ++{ ++ struct rt2880_pmx_func **f; ++ struct rt2880_pmx_group *mux = p->groups; ++ int i, j, c = 0; ++ ++ /* count the mux functions */ ++ while (mux->name) { ++ p->group_count++; ++ mux++; ++ } ++ ++ /* allocate the group names array needed by the gpio function */ ++ p->group_names = devm_kzalloc(p->dev, sizeof(char *) * p->group_count, GFP_KERNEL); ++ if (!p->group_names) ++ return -1; ++ ++ for (i = 0; i < p->group_count; i++) { ++ p->group_names[i] = p->groups[i].name; ++ p->func_count += p->groups[i].func_count; ++ } ++ ++ /* we have a dummy function[0] for gpio */ ++ p->func_count++; ++ ++ /* allocate our function and group mapping index buffers */ ++ f = p->func = devm_kzalloc(p->dev, sizeof(struct rt2880_pmx_func) * p->func_count, GFP_KERNEL); ++ gpio_func.groups = devm_kzalloc(p->dev, sizeof(int) * p->group_count, GFP_KERNEL); ++ if (!f || !gpio_func.groups) ++ return -1; ++ ++ /* add a backpointer to the function so it knows its group */ ++ gpio_func.group_count = p->group_count; ++ for (i = 0; i < gpio_func.group_count; i++) ++ gpio_func.groups[i] = i; ++ ++ f[c] = &gpio_func; ++ c++; ++ ++ /* add remaining functions */ ++ for (i = 0; i < p->group_count; i++) { ++ for (j = 0; j < p->groups[i].func_count; j++) { ++ f[c] = &p->groups[i].func[j]; ++ f[c]->groups = devm_kzalloc(p->dev, sizeof(int), GFP_KERNEL); ++ f[c]->groups[0] = i; ++ f[c]->group_count = 1; ++ c++; ++ } ++ } ++ return 0; ++} ++ ++static int rt2880_pinmux_pins(struct rt2880_priv *p) ++{ ++ int i, j; ++ ++ /* loop over the functions and initialize the pins array. also work out the highest pin used */ ++ for (i = 0; i < p->func_count; i++) { ++ int pin; ++ ++ if (!p->func[i]->pin_count) ++ continue; ++ ++ p->func[i]->pins = devm_kzalloc(p->dev, sizeof(int) * p->func[i]->pin_count, GFP_KERNEL); ++ for (j = 0; j < p->func[i]->pin_count; j++) ++ p->func[i]->pins[j] = p->func[i]->pin_first + j; ++ ++ pin = p->func[i]->pin_first + p->func[i]->pin_count; ++ if (pin > p->max_pins) ++ p->max_pins = pin; ++ } ++ ++ /* the buffer that tells us which pins are gpio */ ++ p->gpio = devm_kzalloc(p->dev,sizeof(uint8_t) * p->max_pins, ++ GFP_KERNEL); ++ /* the pads needed to tell pinctrl about our pins */ ++ p->pads = devm_kzalloc(p->dev, ++ sizeof(struct pinctrl_pin_desc) * p->max_pins, ++ GFP_KERNEL); ++ if (!p->pads || !p->gpio ) { ++ dev_err(p->dev, "Failed to allocate gpio data\n"); ++ return -ENOMEM; ++ } ++ ++ memset(p->gpio, 1, sizeof(uint8_t) * p->max_pins); ++ for (i = 0; i < p->func_count; i++) { ++ if (!p->func[i]->pin_count) ++ continue; ++ ++ for (j = 0; j < p->func[i]->pin_count; j++) ++ p->gpio[p->func[i]->pins[j]] = 0; ++ } ++ ++ /* pin 0 is always a gpio */ ++ p->gpio[0] = 1; ++ ++ /* set the pads */ ++ for (i = 0; i < p->max_pins; i++) { ++ /* strlen("ioXY") + 1 = 5 */ ++ char *name = devm_kzalloc(p->dev, 5, GFP_KERNEL); ++ ++ if (!name) { ++ dev_err(p->dev, "Failed to allocate pad name\n"); ++ return -ENOMEM; ++ } ++ snprintf(name, 5, "io%d", i); ++ p->pads[i].number = i; ++ p->pads[i].name = name; ++ } ++ p->desc->pins = p->pads; ++ p->desc->npins = p->max_pins; ++ ++ return 0; ++} ++ ++static int rt2880_pinmux_probe(struct platform_device *pdev) ++{ ++ struct rt2880_priv *p; ++ struct pinctrl_dev *dev; ++ struct device_node *np; ++ ++ if (!rt2880_pinmux_data) ++ return -ENOSYS; ++ ++ /* setup the private data */ ++ p = devm_kzalloc(&pdev->dev, sizeof(struct rt2880_priv), GFP_KERNEL); ++ if (!p) ++ return -ENOMEM; ++ ++ p->dev = &pdev->dev; ++ p->desc = &rt2880_pctrl_desc; ++ p->groups = rt2880_pinmux_data; ++ platform_set_drvdata(pdev, p); ++ ++ /* init the device */ ++ if (rt2880_pinmux_index(p)) { ++ dev_err(&pdev->dev, "failed to load index\n"); ++ return -EINVAL; ++ } ++ if (rt2880_pinmux_pins(p)) { ++ dev_err(&pdev->dev, "failed to load pins\n"); ++ return -EINVAL; ++ } ++ dev = pinctrl_register(p->desc, &pdev->dev, p); ++ if (IS_ERR(dev)) ++ return PTR_ERR(dev); ++ ++ /* finalize by adding gpio ranges for enables gpio controllers */ ++ for_each_compatible_node(np, NULL, "ralink,rt2880-gpio") { ++ const __be32 *ngpio, *gpiobase; ++ struct pinctrl_gpio_range *range; ++ char *name; ++ ++ if (!of_device_is_available(np)) ++ continue; ++ ++ ngpio = of_get_property(np, "ralink,num-gpios", NULL); ++ gpiobase = of_get_property(np, "ralink,gpio-base", NULL); ++ if (!ngpio || !gpiobase) { ++ dev_err(&pdev->dev, "failed to load chip info\n"); ++ return -EINVAL; ++ } ++ ++ range = devm_kzalloc(p->dev, sizeof(struct pinctrl_gpio_range) + 4, GFP_KERNEL); ++ range->name = name = (char *) &range[1]; ++ sprintf(name, "pio"); ++ range->npins = __be32_to_cpu(*ngpio); ++ range->base = __be32_to_cpu(*gpiobase); ++ range->pin_base = range->base; ++ pinctrl_add_gpio_range(dev, range); ++ } ++ ++ return 0; ++} ++ ++static const struct of_device_id rt2880_pinmux_match[] = { ++ { .compatible = "ralink,rt2880-pinmux" }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, rt2880_pinmux_match); ++ ++static struct platform_driver rt2880_pinmux_driver = { ++ .probe = rt2880_pinmux_probe, ++ .driver = { ++ .name = "rt2880-pinmux", ++ .owner = THIS_MODULE, ++ .of_match_table = rt2880_pinmux_match, ++ }, ++}; ++ ++int __init rt2880_pinmux_init(void) ++{ ++ return platform_driver_register(&rt2880_pinmux_driver); ++} ++ ++core_initcall_sync(rt2880_pinmux_init); -- cgit v1.2.3