From patchwork Mon Apr 24 12:34:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Shubin X-Patchwork-Id: 13222000 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 8E6F8C77B76 for ; Mon, 24 Apr 2023 10:35:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230152AbjDXKfD (ORCPT ); Mon, 24 Apr 2023 06:35:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231237AbjDXKeq (ORCPT ); Mon, 24 Apr 2023 06:34:46 -0400 Received: from forward502c.mail.yandex.net (forward502c.mail.yandex.net [IPv6:2a02:6b8:c03:500:1:45:d181:d502]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B8D419B; Mon, 24 Apr 2023 03:34:24 -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 forward502c.mail.yandex.net (Yandex) with ESMTP id 1B4F75EB3B; 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 JZBb1pbWwKo0-33w8EqCy; Mon, 24 Apr 2023 12:35:49 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=maquefel.me; s=mail; t=1682328949; bh=vU9bRggzAhYOEIOo6hHktg3BN7ZN9WtqIzyEyFF0Ons=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=ZqzxMTukQJ9ZInTO2NfwuEnV628LAWgWX5APJIe8emmO12TIBiSRn5d+fLGZ+nRek m9W59ISxM6G4zSkaAcHhI5fmqZnk5iO/EGrQm2iYJOIybQUCdPkaG0xRQqsDpFtXCl 3BRfon+kQs4Vm8brpmEk7h97HFPBx6I7sWhyU+is= 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 , Rob Herring , Krzysztof Kozlowski , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 16/43] dt-bindings: spi: Add DT bindings ep93xx spi Date: Mon, 24 Apr 2023 15:34:32 +0300 Message-Id: <20230424123522.18302-17-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 Add YAML bindings for ep93xx SoC. Signed-off-by: Nikita Shubin --- .../devicetree/bindings/spi/spi-ep93xx.yaml | 68 +++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-ep93xx.yaml diff --git a/Documentation/devicetree/bindings/spi/spi-ep93xx.yaml b/Documentation/devicetree/bindings/spi/spi-ep93xx.yaml new file mode 100644 index 000000000000..e09ab50629fb --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-ep93xx.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/spi-ep93xx.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: EP93xx SoC SPI controller + +maintainers: + - Mark Brown + +allOf: + - $ref: "spi-controller.yaml#" + +properties: + "#address-cells": true + "#size-cells": true + + compatible: + items: + - const: cirrus,ep9301-spi + + reg: + items: + - description: SPI registers region + + interrupts: + maxItems: 1 + + clocks: + items: + - description: SPI Controller reference clock source + + clock-names: + items: + - const: ep93xx-spi.0 + + cs-gpios: true + + use_dma: + type: boolean + items: + - description: Flag indicating that the SPI should use dma + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + +unevaluatedProperties: false + +examples: + - | + #include + spi0: spi@808a0000 { + compatible = "cirrus,ep9301-spi"; + reg = <0x808a0000 0x18>; + interrupt-parent = <&vic1>; + interrupts = <21>; + clocks = <&syscon EP93XX_CLK_SPI>; + clock-names = "ep93xx-spi.0"; + cs-gpios = <&gpio5 2 0>; + use_dma; + }; + +... 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: 13221993 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; 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(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 Tested-by: Alexander Sverdlin Acked-by: Alexander Sverdlin 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, From patchwork Thu Jun 1 05:34:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Shubin X-Patchwork-Id: 13263015 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 7C6E6C77B7A for ; Thu, 1 Jun 2023 05:38:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231428AbjFAFic (ORCPT ); Thu, 1 Jun 2023 01:38:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231424AbjFAFiP (ORCPT ); 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dkim=pass header.i=@maquefel.me From: Nikita Shubin To: Alexander Sverdlin , Arnd Bergmann , Linus Walleij , Mark Brown Cc: Nikita Shubin , Michael Peters , Kris Bahnsen , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 18/43] spi: ep93xx: add DT support for Cirrus EP93xx Date: Thu, 1 Jun 2023 08:34:09 +0300 Message-Id: <20230601053546.9574-19-nikita.shubin@maquefel.me> X-Mailer: git-send-email 2.37.4 In-Reply-To: <20230424123522.18302-1-nikita.shubin@maquefel.me> References: <20230424123522.18302-1-nikita.shubin@maquefel.me> MIME-Version: 1.0 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 Reviewed-by: Linus Walleij Signed-off-by: Nikita Shubin --- Notes: v0 -> v1: - dropped coma in ep93xx_spi_of_ids - renamed use_dma to "ep9301,use-dma" 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 1615fd22f9a2..bd8049fe9c91 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, "ep9301,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"); @@ -753,9 +775,16 @@ static void ep93xx_spi_remove(struct platform_device *pdev) ep93xx_spi_release_dma(espi); } +static const struct of_device_id ep93xx_spi_of_ids[] = { + { .compatible = "cirrus,ep9301-spi" }, + { /* sentinel */ } +}; +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_new = ep93xx_spi_remove,