From patchwork Thu Jun 11 03:25:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xu Yilun X-Patchwork-Id: 214437 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6DEB7C433E3 for ; Thu, 11 Jun 2020 03:29:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5494B207C3 for ; Thu, 11 Jun 2020 03:29:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726527AbgFKD26 (ORCPT ); Wed, 10 Jun 2020 23:28:58 -0400 Received: from mga18.intel.com ([134.134.136.126]:28223 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726279AbgFKD26 (ORCPT ); Wed, 10 Jun 2020 23:28:58 -0400 IronPort-SDR: ZMf0c3i+/FVFmC/H3yGBHfRPTNEasHUcM41IeihDRJdQZFqLzaBLq+Sm8miTqhlkqrM2rZRirS x9JssBAAPiRQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2020 20:28:58 -0700 IronPort-SDR: qler2OkVMHhjYOmbdsMSaMzd3jHEPQfEhKiD0ryoIRgmdsgzhkxLI59jNSCRDJqgsC4byTfBWs QPHa780vbyVg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,498,1583222400"; d="scan'208";a="260587360" Received: from yilunxu-optiplex-7050.sh.intel.com ([10.239.159.141]) by fmsmga008.fm.intel.com with ESMTP; 10 Jun 2020 20:28:56 -0700 From: Xu Yilun To: broonie@kernel.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: trix@redhat.com, yilun.xu@intel.com, hao.wu@intel.com, matthew.gerlach@linux.intel.com, russell.h.weight@intel.com Subject: [PATCH 3/6] spi: altera: add platform data for slave information. Date: Thu, 11 Jun 2020 11:25:08 +0800 Message-Id: <1591845911-10197-4-git-send-email-yilun.xu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1591845911-10197-1-git-send-email-yilun.xu@intel.com> References: <1591845911-10197-1-git-send-email-yilun.xu@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This patch introduces platform data for slave information, it allows spi-altera to add new spi devices once master registration is done. Signed-off-by: Wu Hao Signed-off-by: Xu Yilun Signed-off-by: Matthew Gerlach Signed-off-by: Russ Weight --- drivers/spi/spi-altera.c | 11 +++++++++++ include/linux/spi/altera.h | 5 +++++ 2 files changed, 16 insertions(+) diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c index e6e6708..aa9d1a2 100644 --- a/drivers/spi/spi-altera.c +++ b/drivers/spi/spi-altera.c @@ -189,6 +189,7 @@ static int altera_spi_probe(struct platform_device *pdev) struct altera_spi *hw; struct spi_master *master; int err = -ENODEV; + u16 i; master = spi_alloc_master(&pdev->dev, sizeof(struct altera_spi)); if (!master) @@ -244,6 +245,16 @@ static int altera_spi_probe(struct platform_device *pdev) err = devm_spi_register_master(&pdev->dev, master); if (err) goto exit; + + if (pdata) { + for (i = 0; i < pdata->num_devices; i++) { + if (!spi_new_device(master, pdata->devices + i)) + dev_warn(&pdev->dev, + "unable to create SPI device: %s\n", + pdata->devices[i].modalias); + } + } + dev_info(&pdev->dev, "base %p, irq %d\n", hw->base, hw->irq); return 0; diff --git a/include/linux/spi/altera.h b/include/linux/spi/altera.h index 344a3fc..2d42641 100644 --- a/include/linux/spi/altera.h +++ b/include/linux/spi/altera.h @@ -14,11 +14,16 @@ * @mode_bits: Mode bits of SPI master. * @num_chipselect: Number of chipselects. * @bits_per_word_mask: bitmask of supported bits_per_word for transfers. + * @num_devices: Number of devices that shall be added when the driver + * is probed. + * @devices: The devices to add. */ struct altera_spi_platform_data { u16 mode_bits; u16 num_chipselect; u32 bits_per_word_mask; + u16 num_devices; + struct spi_board_info *devices; }; #endif /* __LINUX_SPI_ALTERA_H */