From a6a44f94bf8ccae8c7843ac3db2d606b961976c2 Mon Sep 17 00:00:00 2001 From: Rosen Penev Date: Mon, 21 Oct 2024 17:14:41 -0700 Subject: [PATCH] ramips: linkit: replace driver with gpio-hog It does the same thing minus a few dmesg prints. Signed-off-by: Rosen Penev Link: https://github.com/openwrt/openwrt/pull/16788 Signed-off-by: Robert Marko --- .../mt7628an_mediatek_linkit-smart-7688.dts | 15 +-- .../patches-6.6/855-linkit_bootstrap.patch | 97 ------------------- 2 files changed, 9 insertions(+), 103 deletions(-) delete mode 100644 target/linux/ramips/patches-6.6/855-linkit_bootstrap.patch diff --git a/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts b/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts index fdce5cbec5..34ef15eca0 100644 --- a/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts +++ b/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts @@ -22,12 +22,6 @@ serial0 = &uart2; }; - bootstrap { - compatible = "mediatek,linkit"; - - status = "okay"; - }; - leds { compatible = "gpio-leds"; @@ -144,6 +138,15 @@ }; }; +&gpio { + bootstrap { + gpio-hog; + line-name = "bootstrap"; + output-low; + gpios = <11 GPIO_ACTIVE_LOW>; + }; +}; + &i2c { status = "okay"; }; diff --git a/target/linux/ramips/patches-6.6/855-linkit_bootstrap.patch b/target/linux/ramips/patches-6.6/855-linkit_bootstrap.patch deleted file mode 100644 index 16eaf619a0..0000000000 --- a/target/linux/ramips/patches-6.6/855-linkit_bootstrap.patch +++ /dev/null @@ -1,97 +0,0 @@ ---- a/drivers/misc/Makefile -+++ b/drivers/misc/Makefile -@@ -52,6 +52,7 @@ obj-$(CONFIG_ECHO) += echo/ - obj-$(CONFIG_CXL_BASE) += cxl/ - obj-$(CONFIG_DW_XDATA_PCIE) += dw-xdata-pcie.o - obj-$(CONFIG_PCI_ENDPOINT_TEST) += pci_endpoint_test.o -+obj-$(CONFIG_SOC_MT7620) += linkit.o - obj-$(CONFIG_OCXL) += ocxl/ - obj-$(CONFIG_BCM_VK) += bcm-vk/ - obj-y += cardreader/ ---- /dev/null -+++ b/drivers/misc/linkit.c -@@ -0,0 +1,84 @@ -+/* -+ * 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) 2015 John Crispin -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+ -+#define LINKIT_LATCH_GPIO 11 -+ -+struct linkit_hw_data { -+ char board[16]; -+ char rev[16]; -+}; -+ -+static void sanify_string(char *s) -+{ -+ int i; -+ -+ for (i = 0; i < 15; i++) -+ if (s[i] <= 0x20) -+ s[i] = '\0'; -+ s[15] = '\0'; -+} -+ -+static int linkit_probe(struct platform_device *pdev) -+{ -+ struct linkit_hw_data hw; -+ struct mtd_info *mtd; -+ size_t retlen; -+ int ret; -+ -+ mtd = get_mtd_device_nm("factory"); -+ if (IS_ERR(mtd)) -+ return PTR_ERR(mtd); -+ -+ ret = mtd_read(mtd, 0x400, sizeof(hw), &retlen, (u_char *) &hw); -+ put_mtd_device(mtd); -+ -+ sanify_string(hw.board); -+ sanify_string(hw.rev); -+ -+ dev_info(&pdev->dev, "Version : %s\n", hw.board); -+ dev_info(&pdev->dev, "Revision : %s\n", hw.rev); -+ -+ if (!strcmp(hw.board, "LINKITS7688")) { -+ dev_info(&pdev->dev, "setting up bootstrap latch\n"); -+ -+ if (devm_gpio_request(&pdev->dev, LINKIT_LATCH_GPIO, "bootstrap")) { -+ dev_err(&pdev->dev, "failed to setup bootstrap gpio\n"); -+ return -1; -+ } -+ gpio_direction_output(LINKIT_LATCH_GPIO, 0); -+ } -+ -+ return 0; -+} -+ -+static const struct of_device_id linkit_match[] = { -+ { .compatible = "mediatek,linkit" }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, linkit_match); -+ -+static struct platform_driver linkit_driver = { -+ .probe = linkit_probe, -+ .driver = { -+ .name = "mtk-linkit", -+ .owner = THIS_MODULE, -+ .of_match_table = linkit_match, -+ }, -+}; -+ -+int __init linkit_init(void) -+{ -+ return platform_driver_register(&linkit_driver); -+} -+late_initcall_sync(linkit_init); -- 2.30.2