From patchwork Mon Apr 24 12:34:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Shubin X-Patchwork-Id: 677106 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C591DC7618E for ; Mon, 24 Apr 2023 10:21:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231715AbjDXKVA (ORCPT ); Mon, 24 Apr 2023 06:21:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231674AbjDXKUr (ORCPT ); Mon, 24 Apr 2023 06:20:47 -0400 X-Greylist: delayed 1524 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Mon, 24 Apr 2023 03:20:45 PDT Received: from forward501c.mail.yandex.net (forward501c.mail.yandex.net [IPv6:2a02:6b8:c03:500:1:45:d181:d501]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB5531BE6; Mon, 24 Apr 2023 03:20:45 -0700 (PDT) Received: from mail-nwsmtp-smtp-production-main-39.myt.yp-c.yandex.net (mail-nwsmtp-smtp-production-main-39.myt.yp-c.yandex.net [IPv6:2a02:6b8:c12:261e:0:640:2e3d:0]) by forward501c.mail.yandex.net (Yandex) with ESMTP id 8F7625EEC6; Mon, 24 Apr 2023 12:35:50 +0300 (MSK) Received: by mail-nwsmtp-smtp-production-main-39.myt.yp-c.yandex.net (smtp/Yandex) with ESMTPSA id JZBb1pbWwKo0-mhvRtd8a; Mon, 24 Apr 2023 12:35:50 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=maquefel.me; s=mail; t=1682328950; bh=NUogbMI2IRdm13o7ZrbdcTniNyKLaz7Q19OJcE6Bd8w=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=F1Ko+Nx5I9MOqBhET+JwDMTvP1ciKPZwMS/i3lJ3nuDBX45g0geeabrtXz6JsD+c7 5hDcd3p1MIQKuO2ivddwBW4cJGYlhgOCmfQDyCKQ6IkzUPNBwu3cuT2Fog3+2guinx sO3yqhL0LAP/7ScFESnxDVHBdGTtL9wTgsl4QsBQ= Authentication-Results: mail-nwsmtp-smtp-production-main-39.myt.yp-c.yandex.net; dkim=pass header.i=@maquefel.me From: Nikita Shubin Cc: Arnd Bergmann , Linus Walleij , Alexander Sverdlin , Mark Brown , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 17/43] spi: ep93xx: add DT support for Cirrus EP93xx Date: Mon, 24 Apr 2023 15:34:33 +0300 Message-Id: <20230424123522.18302-18-nikita.shubin@maquefel.me> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230424123522.18302-1-nikita.shubin@maquefel.me> References: <20230424123522.18302-1-nikita.shubin@maquefel.me> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org - find register range from the device tree - provide clock access via of - use_dma as a DT node Signed-off-by: Nikita Shubin Reviewed-by: Linus Walleij --- Notes: Arnd Bergmann: - wildcards ep93xx to something meaningful, i.e. ep9301 - drop wrappers drivers/spi/spi-ep93xx.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index 5896a7b2fade..b37be7109161 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -644,6 +645,25 @@ static void ep93xx_spi_release_dma(struct ep93xx_spi *espi) free_page((unsigned long)espi->zeropage); } +#ifdef CONFIG_OF +static struct ep93xx_spi_info dt_spi_info; + +static struct ep93xx_spi_info *ep93xx_spi_get_platdata(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + + if (np && of_property_read_bool(np, "use_dma")) + dt_spi_info.use_dma = 1; + + return &dt_spi_info; +} +#else +static struct ep93xx_spi_info *ep93xx_spi_get_platdata(struct platform_device *pdev) +{ + return dev_get_platdata(&pdev->dev); +} +#endif + static int ep93xx_spi_probe(struct platform_device *pdev) { struct spi_master *master; @@ -653,7 +673,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev) int irq; int error; - info = dev_get_platdata(&pdev->dev); + info = ep93xx_spi_get_platdata(pdev); if (!info) { dev_err(&pdev->dev, "missing platform data\n"); return -EINVAL; @@ -726,6 +746,8 @@ static int ep93xx_spi_probe(struct platform_device *pdev) /* make sure that the hardware is disabled */ writel(0, espi->mmio + SSPCR1); + master->dev.of_node = pdev->dev.of_node; + error = devm_spi_register_master(&pdev->dev, master); if (error) { dev_err(&pdev->dev, "failed to register SPI master\n"); @@ -755,9 +777,16 @@ static int ep93xx_spi_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id ep93xx_spi_of_ids[] = { + { .compatible = "cirrus,ep9301-spi" }, + {}, +}; +MODULE_DEVICE_TABLE(of, ep93xx_spi_of_ids); + static struct platform_driver ep93xx_spi_driver = { .driver = { .name = "ep93xx-spi", + .of_match_table = ep93xx_spi_of_ids, }, .probe = ep93xx_spi_probe, .remove = ep93xx_spi_remove,