From 3771176c9ef9b5d231e9019bc0c872dbe3617209 Mon Sep 17 00:00:00 2001 From: Chuanhong Guo Date: Thu, 13 Dec 2018 15:14:10 +0800 Subject: ath79: add support for linux 4.19 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The following patches are dropped because they are merged upstream: -0001-tty-serial-drop-QCA-pecific-SoC-symbols.patch -0006-usb-drop-deprecated-symbols.patch -0009-MIPS-ath79-add-lots-of-missing-registers.patch -0010-MIPS-ath79-add-support-for-QCA953x-QCA956x-TP9343.patch -0014-MIPS-ath79-finetune-cpu-overrides.patch -0015-MIPS-ath79-enable-uart-during-early_prink.patch -0016-MIPS-ath79-get-PCIe-controller-out-of-reset.patch This patch is dropped due to the introduction of spi-mem framework: -461-spi-ath79-add-fast-flash-read.patch Thank to Michael Marley @mamarley for his work on this patch: -910-unaligned_access_hacks.patch Signed-off-by: Chuanhong Guo [synchronized kernel config with make kernel_oldconfig] Signed-off-by: Petr Štetiar --- ...03-leds-add-reset-controller-based-driver.patch | 186 +++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 target/linux/ath79/patches-4.19/0003-leds-add-reset-controller-based-driver.patch (limited to 'target/linux/ath79/patches-4.19/0003-leds-add-reset-controller-based-driver.patch') diff --git a/target/linux/ath79/patches-4.19/0003-leds-add-reset-controller-based-driver.patch b/target/linux/ath79/patches-4.19/0003-leds-add-reset-controller-based-driver.patch new file mode 100644 index 0000000000..b909d57fce --- /dev/null +++ b/target/linux/ath79/patches-4.19/0003-leds-add-reset-controller-based-driver.patch @@ -0,0 +1,186 @@ +From ecbd9c87f073f097d9fe56390353e64e963e866a Mon Sep 17 00:00:00 2001 +From: John Crispin +Date: Tue, 6 Mar 2018 10:03:03 +0100 +Subject: [PATCH 03/27] leds: add reset-controller based driver + +Signed-off-by: John Crispin +--- + drivers/leds/Kconfig | 11 ++++ + drivers/leds/Makefile | 1 + + drivers/leds/leds-reset.c | 137 ++++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 149 insertions(+) + create mode 100644 drivers/leds/leds-reset.c + +--- a/drivers/leds/Kconfig ++++ b/drivers/leds/Kconfig +@@ -756,6 +756,17 @@ config LEDS_NIC78BX + To compile this driver as a module, choose M here: the module + will be called leds-nic78bx. + ++config LEDS_RESET ++ tristate "LED support for reset-controller API" ++ depends on LEDS_CLASS ++ depends on RESET_CONTROLLER ++ help ++ This option enables support for LEDs connected to pins driven by reset ++ controllers. Yes, DNI actual built HW like that. ++ ++ To compile this driver as a module, choose M here: the module ++ will be called leds-reset. ++ + comment "LED Triggers" + source "drivers/leds/trigger/Kconfig" + +--- /dev/null ++++ b/drivers/leds/leds-reset.c +@@ -0,0 +1,140 @@ ++/* ++ * Copyright (C) 2018 John Crispin ++ * ++ * 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 ++ * published by the Free Software Foundation. ++ * ++ */ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++struct reset_led_data { ++ struct led_classdev cdev; ++ struct reset_control *rst; ++}; ++ ++static inline struct reset_led_data * ++ cdev_to_reset_led_data(struct led_classdev *led_cdev) ++{ ++ return container_of(led_cdev, struct reset_led_data, cdev); ++} ++ ++static void reset_led_set(struct led_classdev *led_cdev, ++ enum led_brightness value) ++{ ++ struct reset_led_data *led_dat = cdev_to_reset_led_data(led_cdev); ++ ++ if (value == LED_OFF) ++ reset_control_assert(led_dat->rst); ++ else ++ reset_control_deassert(led_dat->rst); ++} ++ ++struct reset_leds_priv { ++ int num_leds; ++ struct reset_led_data leds[]; ++}; ++ ++static inline int sizeof_reset_leds_priv(int num_leds) ++{ ++ return sizeof(struct reset_leds_priv) + ++ (sizeof(struct reset_led_data) * num_leds); ++} ++ ++static struct reset_leds_priv *reset_leds_create(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct fwnode_handle *child; ++ struct reset_leds_priv *priv; ++ int count, ret; ++ ++ count = device_get_child_node_count(dev); ++ if (!count) ++ return ERR_PTR(-ENODEV); ++ ++ priv = devm_kzalloc(dev, sizeof_reset_leds_priv(count), GFP_KERNEL); ++ if (!priv) ++ return ERR_PTR(-ENOMEM); ++ ++ device_for_each_child_node(dev, child) { ++ struct reset_led_data *led = &priv->leds[priv->num_leds]; ++ struct device_node *np = to_of_node(child); ++ ++ ret = fwnode_property_read_string(child, "label", &led->cdev.name); ++ if (!led->cdev.name) { ++ fwnode_handle_put(child); ++ return ERR_PTR(-EINVAL); ++ } ++ led->rst = __of_reset_control_get(np, NULL, 0, 0, 0); ++ if (IS_ERR(led->rst)) ++ return ERR_PTR(-EINVAL); ++ ++ fwnode_property_read_string(child, "linux,default-trigger", ++ &led->cdev.default_trigger); ++ ++ led->cdev.brightness_set = reset_led_set; ++ ret = devm_of_led_classdev_register(&pdev->dev, np, &led->cdev); ++ if (ret < 0) ++ return ERR_PTR(ret); ++ led->cdev.dev->of_node = np; ++ priv->num_leds++; ++ } ++ ++ return priv; ++} ++ ++static const struct of_device_id of_reset_leds_match[] = { ++ { .compatible = "reset-leds", }, ++ {}, ++}; ++ ++MODULE_DEVICE_TABLE(of, of_reset_leds_match); ++ ++static int reset_led_probe(struct platform_device *pdev) ++{ ++ struct reset_leds_priv *priv; ++ ++ priv = reset_leds_create(pdev); ++ if (IS_ERR(priv)) ++ return PTR_ERR(priv); ++ ++ platform_set_drvdata(pdev, priv); ++ ++ return 0; ++} ++ ++static void reset_led_shutdown(struct platform_device *pdev) ++{ ++ struct reset_leds_priv *priv = platform_get_drvdata(pdev); ++ int i; ++ ++ for (i = 0; i < priv->num_leds; i++) { ++ struct reset_led_data *led = &priv->leds[i]; ++ ++ if (!(led->cdev.flags & LED_RETAIN_AT_SHUTDOWN)) ++ reset_led_set(&led->cdev, LED_OFF); ++ } ++} ++ ++static struct platform_driver reset_led_driver = { ++ .probe = reset_led_probe, ++ .shutdown = reset_led_shutdown, ++ .driver = { ++ .name = "leds-reset", ++ .of_match_table = of_reset_leds_match, ++ }, ++}; ++ ++module_platform_driver(reset_led_driver); ++ ++MODULE_AUTHOR("John Crispin "); ++MODULE_DESCRIPTION("reset controller LED driver"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS("platform:leds-reset"); +--- a/drivers/leds/Makefile ++++ b/drivers/leds/Makefile +@@ -78,6 +78,7 @@ obj-$(CONFIG_LEDS_MT6323) += leds-mt632 + obj-$(CONFIG_LEDS_LM3692X) += leds-lm3692x.o + obj-$(CONFIG_LEDS_SC27XX_BLTC) += leds-sc27xx-bltc.o + obj-$(CONFIG_LEDS_LM3601X) += leds-lm3601x.o ++obj-$(CONFIG_LEDS_RESET) += leds-reset.o + + # LED SPI Drivers + obj-$(CONFIG_LEDS_CR0014114) += leds-cr0014114.o -- cgit v1.2.3