From patchwork Mon Mar 4 12:27:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 778258 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (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 474083D0C2; Mon, 4 Mar 2024 12:30:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709555456; cv=none; b=gxtrL896bJynmffFpEvVjfbheZECqGUpSut7W5j+hs0KIHZGo66wwNrpT+XPpUYE3esF8VO0Ahs7pdOtBblQQSDyllI2FaM8/DzHF3wAQ9igzdgplR/ACab4R9wXmP+GxS2M/Sojy9xy7NyW34eLDF05ei4Lbw1h8/sv7qXos8E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709555456; c=relaxed/simple; bh=Vh79SKc7Xot2gwdWX8j3CI/Ule7vHc6mMwS3nDowqaI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=he0v4pAOjD4JWWyZNWfu2jV6ZPQhuQ/sCGIPY6lgTj1gGx8ygiULbTms+hhX2dVZO2Nmvv6CH66gSxbqbpY4NvYq9EJKVZqQxURMdkf5jgQW0zGqi9tND/Wj5Bb6WH6jOqIK7ESPc5sLK+RBgYbgdHmisRl2DosxJ5tOYMj3M8U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=nDO8QnqF; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nDO8QnqF" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709555454; x=1741091454; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Vh79SKc7Xot2gwdWX8j3CI/Ule7vHc6mMwS3nDowqaI=; b=nDO8QnqFiIJjNEjtGj0VtnNAbvYFQ1fDiDTJXde2Ii4MSrhOqtxLZLb4 QkGo3pymjfxT/9EV9UUbxlBmyhHdzQXdL0ELE55nhIcAhEFz7C2wD/Rki tFwIGdfuEWm/3slQH+zlq12W4tSpo0VaAd8ZxzM3k6ytIY5WOoiSqqjHP zhA+G9UNP57sa+ViMnX5i1elEFNISOyG9thlZysh4feIppeWaNjXFS6kD GeUs2ATjqhSgdTOUea9y1+TOavrSG9gFD95vF7TKAVHSXvIBCIYw3+vIc nTJDUNtLMnEC9inB2VbdNoSIcKQQ8RYPEP7TGqPShWD0PPfJCFN8B8MWq Q==; X-IronPort-AV: E=McAfee;i="6600,9927,11002"; a="7815189" X-IronPort-AV: E=Sophos;i="6.06,203,1705392000"; d="scan'208";a="7815189" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2024 04:30:51 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,11002"; a="937040428" X-IronPort-AV: E=Sophos;i="6.06,203,1705392000"; d="scan'208";a="937040428" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 04 Mar 2024 04:30:44 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 89F8674C; Mon, 4 Mar 2024 14:30:37 +0200 (EET) From: Andy Shevchenko To: Greg Kroah-Hartman , Andy Shevchenko , Florian Fainelli , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-tegra@vger.kernel.org Cc: Jiri Slaby , Joel Stanley , Andrew Jeffery , Broadcom internal kernel review list , Ray Jui , Scott Branden , Al Cooper , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Paul Cercueil , Vladimir Zapolskiy , Thierry Reding , Jonathan Hunter , Kunihiko Hayashi , Masami Hiramatsu , Andi Shyti Subject: [PATCH v3 07/14] serial: 8250_dw: Switch to use uart_read_port_properties() Date: Mon, 4 Mar 2024 14:27:08 +0200 Message-ID: <20240304123035.758700-8-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.43.0.rc1.1.gbec44491f096 In-Reply-To: <20240304123035.758700-1-andriy.shevchenko@linux.intel.com> References: <20240304123035.758700-1-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Since we have now a common helper to read port properties use it instead of sparse home grown solution. Reviewed-by: Andi Shyti Signed-off-by: Andy Shevchenko --- drivers/tty/serial/8250/8250_dw.c | 67 +++++++++++++------------------ 1 file changed, 27 insertions(+), 40 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 062718615944..9ac4be748596 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include #include @@ -449,12 +448,7 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data) if (np) { unsigned int quirks = data->pdata->quirks; - int id; - /* get index of serial line, if found in DT aliases */ - id = of_alias_get_id(np, "serial"); - if (id >= 0) - p->line = id; #ifdef CONFIG_64BIT if (quirks & DW_UART_QUIRK_OCTEON) { p->serial_in = dw8250_serial_inq; @@ -465,12 +459,6 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data) } #endif - if (of_device_is_big_endian(np)) { - p->iotype = UPIO_MEM32BE; - p->serial_in = dw8250_serial_in32be; - p->serial_out = dw8250_serial_out32be; - } - if (quirks & DW_UART_QUIRK_ARMADA_38X) p->serial_out = dw8250_serial_out38x; if (quirks & DW_UART_QUIRK_SKIP_SET_RATE) @@ -510,39 +498,21 @@ static int dw8250_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct dw8250_data *data; struct resource *regs; - int irq; int err; - u32 val; regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!regs) return dev_err_probe(dev, -EINVAL, "no registers defined\n"); - irq = platform_get_irq_optional(pdev, 0); - /* no interrupt -> fall back to polling */ - if (irq == -ENXIO) - irq = 0; - if (irq < 0) - return irq; - spin_lock_init(&p->lock); - p->mapbase = regs->start; - p->irq = irq; p->handle_irq = dw8250_handle_irq; p->pm = dw8250_do_pm; p->type = PORT_8250; - p->flags = UPF_SHARE_IRQ | UPF_FIXED_PORT; + p->flags = UPF_FIXED_PORT; p->dev = dev; - p->iotype = UPIO_MEM; - p->serial_in = dw8250_serial_in; - p->serial_out = dw8250_serial_out; p->set_ldisc = dw8250_set_ldisc; p->set_termios = dw8250_set_termios; - p->membase = devm_ioremap(dev, regs->start, resource_size(regs)); - if (!p->membase) - return -ENOMEM; - data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; @@ -554,15 +524,35 @@ static int dw8250_probe(struct platform_device *pdev) data->uart_16550_compatible = device_property_read_bool(dev, "snps,uart-16550-compatible"); - err = device_property_read_u32(dev, "reg-shift", &val); - if (!err) - p->regshift = val; + p->mapbase = regs->start; + p->mapsize = resource_size(regs); - err = device_property_read_u32(dev, "reg-io-width", &val); - if (!err && val == 4) { - p->iotype = UPIO_MEM32; + p->membase = devm_ioremap(dev, p->mapbase, p->mapsize); + if (!p->membase) + return -ENOMEM; + + err = uart_read_port_properties(p); + /* no interrupt -> fall back to polling */ + if (err == -ENXIO) + err = 0; + if (err) + return err; + + switch (p->iotype) { + case UPIO_MEM: + p->serial_in = dw8250_serial_in; + p->serial_out = dw8250_serial_out; + break; + case UPIO_MEM32: p->serial_in = dw8250_serial_in32; p->serial_out = dw8250_serial_out32; + break; + case UPIO_MEM32BE: + p->serial_in = dw8250_serial_in32be; + p->serial_out = dw8250_serial_out32be; + break; + default: + return -ENODEV; } if (device_property_read_bool(dev, "dcd-override")) { @@ -589,9 +579,6 @@ static int dw8250_probe(struct platform_device *pdev) data->msr_mask_off |= UART_MSR_TERI; } - /* Always ask for fixed clock rate from a property. */ - device_property_read_u32(dev, "clock-frequency", &p->uartclk); - /* If there is separate baudclk, get the rate from it. */ data->clk = devm_clk_get_optional_enabled(dev, "baudclk"); if (data->clk == NULL)