[PATCH v2 13/14] serial: 8250_tegra: Switch to use uart_read_port_properties()

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	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" <jirislaby@kernel.org>,
	"Joel Stanley" <joel@jms.id.au>,
	"Andrew Jeffery" <andrew@codeconstruct.com.au>,
	"Florian Fainelli" <florian.fainelli@broadcom.com>,
	"Broadcom internal kernel review list"
	<bcm-kernel-feedback-list@broadcom.com>,
	"Ray Jui" <rjui@broadcom.com>,
	"Scott Branden" <sbranden@broadcom.com>,
	"Al Cooper" <alcooperx@gmail.com>,
	"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
	"Paul Cercueil" <paul@crapouillou.net>,
	"Vladimir Zapolskiy" <vz@mleia.com>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Jonathan Hunter" <jonathanh@nvidia.com>,
	"Kunihiko Hayashi" <hayashi.kunihiko@socionext.com>,
	"Masami Hiramatsu" <mhiramat@kernel.org>
Subject: [PATCH v2 13/14] serial: 8250_tegra: Switch to use uart_read_port_properties()
Date: Mon, 26 Feb 2024 16:19:29 +0200	[thread overview]
Message-ID: <20240226142514.1485246-14-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20240226142514.1485246-1-andriy.shevchenko@linux.intel.com>

Since we have now a common helper to read port properties
use it instead of sparse home grown solution.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/tty/serial/8250/8250_tegra.c | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_tegra.c b/drivers/tty/serial/8250/8250_tegra.c
index ba352262df75..ce48d02dfa0d 100644
--- a/drivers/tty/serial/8250/8250_tegra.c
+++ b/drivers/tty/serial/8250/8250_tegra.c
@@ -57,25 +57,11 @@ static int tegra_uart_probe(struct platform_device *pdev)
 	port = &port8250.port;
 	spin_lock_init(&port->lock);
 
-	port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT |
-		      UPF_FIXED_TYPE;
-	port->iotype = UPIO_MEM32;
-	port->regshift = 2;
+	port->flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_FIXED_TYPE;
 	port->type = PORT_TEGRA;
-	port->irqflags |= IRQF_SHARED;
 	port->dev = &pdev->dev;
 	port->handle_break = tegra_uart_handle_break;
 
-	ret = of_alias_get_id(pdev->dev.of_node, "serial");
-	if (ret >= 0)
-		port->line = ret;
-
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0)
-		return ret;
-
-	port->irq = ret;
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -ENODEV;
@@ -88,12 +74,18 @@ static int tegra_uart_probe(struct platform_device *pdev)
 	port->mapbase = res->start;
 	port->mapsize = resource_size(res);
 
+	ret = uart_read_port_properties(port, true);
+	if (ret)
+		return ret;
+
+	port->iotype = UPIO_MEM32;
+	port->regshift = 2;
+
 	uart->rst = devm_reset_control_get_optional_shared(&pdev->dev, NULL);
 	if (IS_ERR(uart->rst))
 		return PTR_ERR(uart->rst);
 
-	if (device_property_read_u32(&pdev->dev, "clock-frequency",
-				     &port->uartclk)) {
+	if (!port->uartclk) {
 		uart->clk = devm_clk_get(&pdev->dev, NULL);
 		if (IS_ERR(uart->clk)) {
 			dev_err(&pdev->dev, "failed to get clock!\n");
-- 
2.43.0.rc1.1.gbec44491f096

