From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0077C3D47B8; Mon, 27 Apr 2026 14:24:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777299862; cv=none; b=kE2z9OTXg3VcoI35IkyO+LTMJOyaK3PtlMm7ju9WarMDOUqdsvm0GAYw0dRz5/Iz13sWTgIBB2anQayteYVb6AVPp+nAIicGuhze727KyCbcQKpp/kqH1CMPTx5GOlbks/7OM6UrDRNBKmJd3FlUMPMPG0ijlG5q28DmPsyv934= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777299862; c=relaxed/simple; bh=5vHeUD4XDO+jrNf3SjbxNwWzSv6HWIWXWuo72nUC1JI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=XTEo+3K4qvj/Qw5PgD824LchE2hGsvkB/JHOROIci38DLc5hq+pQ6T1zwxe55bdaRQyRC0Cw3YpF+YU4WY7uhyPO1PU2CJOjPAAkAihpD/PmbjK2CpBXkgxndCqPdYXKCyvbD7bLmD2sBHbDL8El6OO6UUilzifla/QZVQWHP9U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uGdsR4+k; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="uGdsR4+k" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F4C4C2BCC4; Mon, 27 Apr 2026 14:24:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777299861; bh=5vHeUD4XDO+jrNf3SjbxNwWzSv6HWIWXWuo72nUC1JI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uGdsR4+k3FvnnYnvX3Y8UhtjVufTKOlRn85hY5P7E9hwpr3x3DRbxCttv2TDtdkMC UZBGTe8kwF1BBuT+Rk8dj3YxZ7hcEMWHn3RZ2E35/Igo/CaXdbC8fANsB7mH+rKLkb fjm8htxAkvo46HqYmaN+ZUCW7/DeEHD7hkXKPJP/trr3Fsf0pYfh+w/aRK9YuYhtgr ue73ltKQMJqkuDpyG6xB9V7mVUy303EhLF5iJFMY0kV/XSr1p86aoTUeQInQPIaC+R 2wtwquWyoYCKsrMS4MKjF7S987ZTRy66tm0UjHpMiDgYFAytkx472Rjo/Udnownd7r tog962DDwol7w== From: Arnd Bergmann To: Cc: Arnd Bergmann , "Aaro Koskinen" , "Andreas Kemnade" , "Bartosz Golaszewski" , =?UTF-8?q?Beno=C3=AEt=20Cousson?= , "David S. Miller" , "Dmitry Torokhov" , "Eric Dumazet" , "Felipe Balbi" , "Jakub Kicinski" , "Johannes Berg" , "Kevin Hilman" , "Krzysztof Kozlowski" , "Linus Walleij" , "Paolo Abeni" , "Rob Herring" , "Roger Quadros" , "Tony Lindgren" , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, linux-omap@vger.kernel.org, Christian Lamparter Subject: [PATCH v3 3/3] p54spi: convert to devicetree Date: Mon, 27 Apr 2026 16:23:55 +0200 Message-Id: <20260427142355.2532714-4-arnd@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260427142355.2532714-1-arnd@kernel.org> References: <20260427142355.2532714-1-arnd@kernel.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Arnd Bergmann The Prism54 SPI driver hardcodes GPIO numbers and expects users to pass them as module parameters, apparently a relic from its life as a staging driver. This works because there is only one user, the Nokia N8x0 tablet. Convert this to the gpio descriptor interface and DT based probing to improve this and simplify the code at the same time. Acked-by: Christian Lamparter Signed-off-by: Arnd Bergmann --- arch/arm/mach-omap2/board-n8x0.c | 18 ------ drivers/net/wireless/intersil/p54/p54spi.c | 68 ++++++++-------------- drivers/net/wireless/intersil/p54/p54spi.h | 3 + 3 files changed, 28 insertions(+), 61 deletions(-) diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c index 969265d5d5c6..d9acd32c5457 100644 --- a/arch/arm/mach-omap2/board-n8x0.c +++ b/arch/arm/mach-omap2/board-n8x0.c @@ -20,7 +20,6 @@ #include #include #include -#include #include #include @@ -106,21 +105,6 @@ static void __init n8x0_usb_init(void) {} #endif /*CONFIG_USB_MUSB_TUSB6010 */ - -static struct omap2_mcspi_device_config p54spi_mcspi_config = { - .turbo_mode = 0, -}; - -static struct spi_board_info n800_spi_board_info[] __initdata = { - { - .modalias = "p54spi", - .bus_num = 2, - .chip_select = 0, - .max_speed_hz = 48000000, - .controller_data = &p54spi_mcspi_config, - }, -}; - #if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP) /* @@ -524,7 +508,5 @@ omap_late_initcall(n8x0_late_initcall); void * __init n8x0_legacy_init(void) { board_check_revision(); - spi_register_board_info(n800_spi_board_info, - ARRAY_SIZE(n800_spi_board_info)); return &mmc1_data; } diff --git a/drivers/net/wireless/intersil/p54/p54spi.c b/drivers/net/wireless/intersil/p54/p54spi.c index 9d66dcae54e0..1cda3b42b5d7 100644 --- a/drivers/net/wireless/intersil/p54/p54spi.c +++ b/drivers/net/wireless/intersil/p54/p54spi.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -15,7 +16,7 @@ #include #include #include -#include +#include #include #include "p54spi.h" @@ -30,19 +31,6 @@ MODULE_FIRMWARE("3826.arm"); MODULE_FIRMWARE("3826.eeprom"); -/* gpios should be handled in board files and provided via platform data, - * but because it's currently impossible for p54spi to have a header file - * in include/linux, let's use module parameters for now - */ - -static int p54spi_gpio_power = 97; -module_param(p54spi_gpio_power, int, 0444); -MODULE_PARM_DESC(p54spi_gpio_power, "gpio number for power line"); - -static int p54spi_gpio_irq = 87; -module_param(p54spi_gpio_irq, int, 0444); -MODULE_PARM_DESC(p54spi_gpio_irq, "gpio number for irq line"); - static void p54spi_spi_read(struct p54s_priv *priv, u8 address, void *buf, size_t len) { @@ -262,14 +250,14 @@ static int p54spi_upload_firmware(struct ieee80211_hw *dev) static void p54spi_power_off(struct p54s_priv *priv) { - disable_irq(gpio_to_irq(p54spi_gpio_irq)); - gpio_set_value(p54spi_gpio_power, 0); + disable_irq(priv->irq); + gpiod_set_value(priv->gpio_powerdown, 1); } static void p54spi_power_on(struct p54s_priv *priv) { - gpio_set_value(p54spi_gpio_power, 1); - enable_irq(gpio_to_irq(p54spi_gpio_irq)); + gpiod_set_value(priv->gpio_powerdown, 0); + enable_irq(priv->irq); /* need to wait a while before device can be accessed, the length * is just a guess @@ -608,30 +596,19 @@ static int p54spi_probe(struct spi_device *spi) goto err_free; } - ret = gpio_request(p54spi_gpio_power, "p54spi power"); - if (ret < 0) { - dev_err(&priv->spi->dev, "power GPIO request failed: %d", ret); + priv->gpio_powerdown = gpiod_get(&spi->dev, "powerdown", GPIOD_OUT_HIGH); + if (IS_ERR(priv->gpio_powerdown)) { + ret = PTR_ERR(priv->gpio_powerdown); + dev_err(&priv->spi->dev, "powerdown GPIO request failed: %d", ret); goto err_free; } - ret = gpio_request(p54spi_gpio_irq, "p54spi irq"); - if (ret < 0) { - dev_err(&priv->spi->dev, "irq GPIO request failed: %d", ret); - goto err_free_gpio_power; - } - - gpio_direction_output(p54spi_gpio_power, 0); - gpio_direction_input(p54spi_gpio_irq); - - ret = request_irq(gpio_to_irq(p54spi_gpio_irq), - p54spi_interrupt, IRQF_NO_AUTOEN, "p54spi", - priv->spi); + ret = request_irq(spi->irq, p54spi_interrupt, IRQF_NO_AUTOEN, "p54spi", priv->spi); if (ret < 0) { dev_err(&priv->spi->dev, "request_irq() failed"); - goto err_free_gpio_irq; + goto err_free_gpio_power; } - irq_set_irq_type(gpio_to_irq(p54spi_gpio_irq), IRQ_TYPE_EDGE_RISING); INIT_WORK(&priv->work, p54spi_work); init_completion(&priv->fw_comp); @@ -659,11 +636,9 @@ static int p54spi_probe(struct spi_device *spi) err_free_common: release_firmware(priv->firmware); - free_irq(gpio_to_irq(p54spi_gpio_irq), spi); -err_free_gpio_irq: - gpio_free(p54spi_gpio_irq); + free_irq(priv->irq, spi); err_free_gpio_power: - gpio_free(p54spi_gpio_power); + gpiod_put(priv->gpio_powerdown); err_free: p54_free_common(priv->hw); return ret; @@ -675,10 +650,8 @@ static void p54spi_remove(struct spi_device *spi) p54_unregister_common(priv->hw); - free_irq(gpio_to_irq(p54spi_gpio_irq), spi); - - gpio_free(p54spi_gpio_power); - gpio_free(p54spi_gpio_irq); + free_irq(priv->irq, spi); + gpiod_put(priv->gpio_powerdown); release_firmware(priv->firmware); mutex_destroy(&priv->mutex); @@ -686,10 +659,19 @@ static void p54spi_remove(struct spi_device *spi) p54_free_common(priv->hw); } +struct of_device_id p54spi_of_ids[] = { + { .compatible = "cnxt,3110x", }, + { .compatible = "isil,p54spi", }, + { .compatible = "st,stlc4550", }, + { .compatible = "st,stlc4560", }, + { }, +}; +MODULE_DEVICE_TABLE(of, p54spi_of_ids); static struct spi_driver p54spi_driver = { .driver = { .name = "p54spi", + .of_match_table = p54spi_of_ids, }, .probe = p54spi_probe, diff --git a/drivers/net/wireless/intersil/p54/p54spi.h b/drivers/net/wireless/intersil/p54/p54spi.h index e5619a13fd61..118785cc635a 100644 --- a/drivers/net/wireless/intersil/p54/p54spi.h +++ b/drivers/net/wireless/intersil/p54/p54spi.h @@ -107,6 +107,9 @@ struct p54s_priv { enum fw_state fw_state; const struct firmware *firmware; + + struct gpio_desc *gpio_powerdown; + int irq; }; #endif /* P54SPI_H */ -- 2.39.5