{"id":812851,"url":"http://patchwork.ozlabs.org/api/patches/812851/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/20170912134659.22613-1-moritz.fischer@ettus.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20170912134659.22613-1-moritz.fischer@ettus.com>","list_archive_url":null,"date":"2017-09-12T13:46:59","name":"[U-Boot,v3] i2c: muxes: pca954x: Add support for GPIO reset line","commit_ref":"36bdeb75a4f4f276c841644775e687eb6b3d9ec4","pull_url":null,"state":"accepted","archived":false,"hash":"30c81eb6c97c0b73ee59ca7158c8650030833048","submitter":{"id":65751,"url":"http://patchwork.ozlabs.org/api/people/65751/?format=json","name":"Moritz Fischer","email":"moritz.fischer@ettus.com"},"delegate":{"id":1691,"url":"http://patchwork.ozlabs.org/api/users/1691/?format=json","username":"hs","first_name":"Heiko","last_name":"Schocher","email":"hs@denx.de"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/20170912134659.22613-1-moritz.fischer@ettus.com/mbox/","series":[{"id":2703,"url":"http://patchwork.ozlabs.org/api/series/2703/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/list/?series=2703","date":"2017-09-12T13:46:59","name":"[U-Boot,v3] i2c: muxes: pca954x: Add support for GPIO reset line","version":3,"mbox":"http://patchwork.ozlabs.org/series/2703/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/812851/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/812851/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; 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charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" "},"content":"This commit adds support for GPIO reset lines matching the\ncommon linux \"reset-gpios\" devicetree binding.\n\nSigned-off-by: Moritz Fischer \nReviewed-by: Heiko Schocher \nReviewed-by: Simon Glass \n---\n\nChanges from v2:\n- Removed ifdef that would break build as suggested by Simon\n- Added Simon's and Heko's Reviewed-by\n\nChanges from v1:\n- Simon's feedback on ifdef vs IS_ENABLED()\n\nCheers,\nMoritz\n\n---\n drivers/i2c/muxes/pca954x.c | 40 +++++++++++++++++++++++++++++++++++++++-\n 1 file changed, 39 insertions(+), 1 deletion(-)","diff":"diff --git a/drivers/i2c/muxes/pca954x.c b/drivers/i2c/muxes/pca954x.c\nindex 383f72f552..01ca1ff48d 100644\n--- a/drivers/i2c/muxes/pca954x.c\n+++ b/drivers/i2c/muxes/pca954x.c\n@@ -1,5 +1,6 @@\n /*\n * Copyright (C) 2015 - 2016 Xilinx, Inc.\n+ * Copyright (C) 2017 National Instruments Corp\n * Written by Michal Simek\n *\n * SPDX-License-Identifier:\tGPL-2.0+\n@@ -9,7 +10,8 @@\n #include \n #include \n #include \n-#include \n+\n+#include \n \n DECLARE_GLOBAL_DATA_PTR;\n \n@@ -30,6 +32,7 @@ struct chip_desc {\n struct pca954x_priv {\n \tu32 addr; /* I2C mux address */\n \tu32 width; /* I2C mux width - number of busses */\n+\tstruct gpio_desc gpio_mux_reset;\n };\n \n static const struct chip_desc chips[] = {\n@@ -105,10 +108,45 @@ static int pca954x_ofdata_to_platdata(struct udevice *dev)\n \treturn 0;\n }\n \n+static int pca954x_probe(struct udevice *dev)\n+{\n+\tif (IS_ENABLED(CONFIG_DM_GPIO)) {\n+\t\tstruct pca954x_priv *priv = dev_get_priv(dev);\n+\t\tint err;\n+\n+\t\terr = gpio_request_by_name(dev, \"reset-gpios\", 0,\n+\t\t\t\t&priv->gpio_mux_reset, GPIOD_IS_OUT);\n+\n+\t\t/* it's optional so only bail if we get a real error */\n+\t\tif (err && (err != -ENOENT))\n+\t\t\treturn err;\n+\n+\t\t/* dm will take care of polarity */\n+\t\tif (dm_gpio_is_valid(&priv->gpio_mux_reset))\n+\t\t\tdm_gpio_set_value(&priv->gpio_mux_reset, 0);\n+\t}\n+\n+\treturn 0;\n+}\n+\n+static int pca954x_remove(struct udevice *dev)\n+{\n+\tif (IS_ENABLED(CONFIG_DM_GPIO)) {\n+\t\tstruct pca954x_priv *priv = dev_get_priv(dev);\n+\n+\t\tif (dm_gpio_is_valid(&priv->gpio_mux_reset))\n+\t\t\tdm_gpio_free(dev, &priv->gpio_mux_reset);\n+\t}\n+\n+\treturn 0;\n+}\n+\n U_BOOT_DRIVER(pca954x) = {\n \t.name = \"pca954x\",\n \t.id = UCLASS_I2C_MUX,\n \t.of_match = pca954x_ids,\n+\t.probe = pca954x_probe,\n+\t.remove = pca954x_remove,\n \t.ops = &pca954x_ops,\n \t.ofdata_to_platdata = pca954x_ofdata_to_platdata,\n \t.priv_auto_alloc_size = sizeof(struct pca954x_priv),\n","prefixes":["U-Boot","v3"]}