From patchwork Mon Jul 28 12:19:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 4633901 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 0EA01C033C for ; Mon, 28 Jul 2014 12:20:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3E2772017E for ; Mon, 28 Jul 2014 12:20:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D1D72018E for ; Mon, 28 Jul 2014 12:20:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752881AbaG1MTw (ORCPT ); Mon, 28 Jul 2014 08:19:52 -0400 Received: from bhuna.collabora.co.uk ([93.93.135.160]:57565 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752867AbaG1MTu (ORCPT ); Mon, 28 Jul 2014 08:19:50 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: javier) with ESMTPSA id CA6A3602D4A From: Javier Martinez Canillas To: Lee Jones Cc: Wolfram Sang , Dmitry Torokhov , Doug Anderson , Simon Glass , Bill Richardson , Andrew Bresticker , Derek Basehore , Todd Broch , Olof Johansson , linux-i2c@vger.kernel.org, linux-input@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH 6/7] mfd: cros_ec: Instantiate sub-devices from device tree Date: Mon, 28 Jul 2014 14:19:26 +0200 Message-Id: <1406549967-21291-7-git-send-email-javier.martinez@collabora.co.uk> X-Mailer: git-send-email 2.0.0.rc2 In-Reply-To: <1406549967-21291-1-git-send-email-javier.martinez@collabora.co.uk> References: <1406549967-21291-1-git-send-email-javier.martinez@collabora.co.uk> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Todd Broch If the EC device tree node has sub-nodes, try to instantiate them as MFD sub-devices. We can configure the EC features provided by the board. Signed-off-by: Todd Broch --- drivers/mfd/cros_ec.c | 40 ++++++++++++++++++++++++++++++---------- 1 file changed, 30 insertions(+), 10 deletions(-) diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c index 634c434..96c926c 100644 --- a/drivers/mfd/cros_ec.c +++ b/drivers/mfd/cros_ec.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -109,22 +110,16 @@ int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev, EXPORT_SYMBOL(cros_ec_cmd_xfer); static const struct mfd_cell cros_devs[] = { - { - .name = "cros-ec-keyb", - .id = 1, - .of_compatible = "google,cros-ec-keyb", - }, - { - .name = "cros-ec-i2c-tunnel", - .id = 2, - .of_compatible = "google,cros-ec-i2c-tunnel", - }, }; int cros_ec_register(struct cros_ec_device *ec_dev) { struct device *dev = ec_dev->dev; int err = 0; +#ifdef CONFIG_OF + struct device_node *node; + int id = ARRAY_SIZE(cros_devs); +#endif if (ec_dev->din_size) { ec_dev->din = devm_kzalloc(dev, ec_dev->din_size, GFP_KERNEL); @@ -146,6 +141,31 @@ int cros_ec_register(struct cros_ec_device *ec_dev) dev_err(dev, "failed to add mfd devices\n"); return err; } +#ifdef CONFIG_OF + /* + * Add sub-devices declared in the device tree. NOTE they should NOT be + * declared in cros_devs + */ + for_each_child_of_node(dev->of_node, node) { + char name[128]; + struct mfd_cell cell = { + .id = 0, + .name = name, + }; + + if (of_modalias_node(node, name, sizeof(name)) < 0) { + dev_err(dev, "modalias failure on %s\n", + node->full_name); + continue; + } + dev_dbg(dev, "adding MFD sub-device %s\n", node->name); + cell.of_compatible = of_get_property(node, "compatible", NULL); + err = mfd_add_devices(dev, ++id, &cell, 1, NULL, ec_dev->irq, + NULL); + if (err) + dev_err(dev, "fail to add %s\n", node->full_name); + } +#endif dev_info(dev, "Chrome EC device registered\n");