From patchwork Tue May 28 09:40:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rasmus Villemoes X-Patchwork-Id: 13676379 Received: from mail-lj1-f177.google.com (mail-lj1-f177.google.com [209.85.208.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 46C1716939B for ; Tue, 28 May 2024 09:40:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716889229; cv=none; b=bmiLIehZsGXiX1RhkuLuz84yDGHiHC7gVRP35bzct/ZywLS+TbkvqDyghLsMITE9CQIFdEtPexJGNGmRKhZlXMbIhjyoQcSGNxb4O7wxruJe6rtsYTGJ5BSVkJSSaavADH+jXRTrlqiDRwFbcuQMOUjXLK8oL6ERLCwC4NLhUxY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716889229; c=relaxed/simple; bh=UTgk+S/ntlj4DJ7vOuWu5jP7Xc1+VOJ8hpm+1blQCDw=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=mMGC55bLoyEPGa0BO/9rQwbvimytTTckXHEmwuMh+I9NCz/dBisWOkZU7JcJ87us1OBFmYVo+BB9OKof9NpHsVQsRw5jF1ArR8rh3Cic1DgkQCVXLb+KoENmWK52E3jH/HECfYzfAWqCZer1WNjxpKdNamcYweJyB9KvFcT7Xtc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rasmusvillemoes.dk; spf=pass smtp.mailfrom=rasmusvillemoes.dk; dkim=pass (1024-bit key) header.d=rasmusvillemoes.dk header.i=@rasmusvillemoes.dk header.b=BtibeMHZ; arc=none smtp.client-ip=209.85.208.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rasmusvillemoes.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rasmusvillemoes.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=rasmusvillemoes.dk header.i=@rasmusvillemoes.dk header.b="BtibeMHZ" Received: by mail-lj1-f177.google.com with SMTP id 38308e7fff4ca-2e974862b00so5970311fa.0 for ; Tue, 28 May 2024 02:40:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; t=1716889225; x=1717494025; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=GsAir5s7syPxi7Z0jM8CWLgds717Ko20mRWI7Xd9NB8=; b=BtibeMHZOcGG91SSDqG2tOmwU1/B9+C68HM0r58sVXoFOUIlAh7T1GwgSUVe7HjXho Ck6syBFEF2pThZfCvewwITnCHm7dO0dHMMsfQUVX8JumocDuuIjCvziXwY10tsqHdpVh v6iLRvb2FvMn321VDgGW2fwbPM9oBqdBLfM1Y= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716889225; x=1717494025; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=GsAir5s7syPxi7Z0jM8CWLgds717Ko20mRWI7Xd9NB8=; b=icFDu3FQeQkj+LDQiJHuQr5ygLTRoTZd3+W5nRulZ2OjD/38QKBNA2gLiwvih08a0O JzclyDcmNf++L9k51vIoC4jDXD8QE7MV/95/cjy5/ytmIcUb06bi2znx0btavwUeBDqw owwiJuooJtY4PD0/oGTvJtH6Mc0J6IxUeenswWCoshqFc07oZHisxDSlxwUllRlkJdOk joNA4J7tq8LsHfdi3TES8RvVAL+ApX/mflRVjuJOb15v4wtB9KK+r6yPrioyJ6xiuQ4r 7raY7CPtx1ZlXyAQowdihtwEmMxlCLyCtWd38uefG/jw3b4FOhscxklogXNIDrY0OWwD Amsg== X-Forwarded-Encrypted: i=1; AJvYcCXEOMattwP8mzO6XfVXtMP48tn5/Xow/P0Tar+smO6v0wZatI8UPZzDqXOrsbG/mtmWrHCrrZiOXCoues2W0slvCIfj X-Gm-Message-State: AOJu0YzDNJTbktMrPd7CWL0Cy3gM9RKLr524Z+mT+aYuw79Bn1VUOt1h 4uuNoNJlFd0cDhT3ETMA2k5JfJdW2HiehTefXBOCEgiDIWy4wMLvjx3gNhniqtG7YZ82qNa/h0P QtQs= X-Google-Smtp-Source: AGHT+IFRC5F+uRTEEAgRzPfgYmsVebb6vhnBeks8C4kTfMuV2pHXNUEYaRTsAAyEYxXGPFioV6UrSg== X-Received: by 2002:a2e:3003:0:b0:2dc:e69a:fdbc with SMTP id 38308e7fff4ca-2e95b0702bemr72083601fa.1.1716889225287; Tue, 28 May 2024 02:40:25 -0700 (PDT) Received: from prevas-ravi.prevas.se ([81.216.59.226]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2e98c6bc515sm55821fa.67.2024.05.28.02.40.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 May 2024 02:40:24 -0700 (PDT) From: Rasmus Villemoes To: Greg Kroah-Hartman , Jiri Slaby , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: Rasmus Villemoes , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH] serial: imx: stop casting struct uart_port to struct imx_port Date: Tue, 28 May 2024 11:40:21 +0200 Message-Id: <20240528094022.2161066-1-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.40.1.1.g1c60b9335d Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 struct imx_port does have a struct uart_port as its first member, so the current code works, but it is not how kernel code is usually written. Similar to many other serial drivers, introduce and use a to_imx_port() helper based on container_of(). No functional change. Signed-off-by: Rasmus Villemoes Reviewed-by: Ilpo Järvinen Reviewed-by: Fabio Estevam --- drivers/tty/serial/imx.c | 41 ++++++++++++++++++++++------------------ 1 file changed, 23 insertions(+), 18 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 2eb22594960f..f5cfe5571e0e 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -264,6 +264,11 @@ static const struct of_device_id imx_uart_dt_ids[] = { }; MODULE_DEVICE_TABLE(of, imx_uart_dt_ids); +static inline struct imx_port *to_imx_port(struct uart_port *port) +{ + return container_of(port, struct imx_port, port); +} + static inline void imx_uart_writel(struct imx_port *sport, u32 val, u32 offset) { writel(val, sport->port.membase + offset); @@ -377,7 +382,7 @@ static void imx_uart_disable_loopback_rs485(struct imx_port *sport) /* called with port.lock taken and irqs off */ static void imx_uart_start_rx(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned int ucr1, ucr2; ucr1 = imx_uart_readl(sport, UCR1); @@ -401,7 +406,7 @@ static void imx_uart_start_rx(struct uart_port *port) /* called with port.lock taken and irqs off */ static void imx_uart_stop_tx(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); u32 ucr1, ucr4, usr2; if (sport->tx_state == OFF) @@ -466,7 +471,7 @@ static void imx_uart_stop_tx(struct uart_port *port) static void imx_uart_stop_rx_with_loopback_ctrl(struct uart_port *port, bool loopback) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); u32 ucr1, ucr2, ucr4, uts; ucr1 = imx_uart_readl(sport, UCR1); @@ -511,7 +516,7 @@ static void imx_uart_stop_rx(struct uart_port *port) /* called with port.lock taken and irqs off */ static void imx_uart_enable_ms(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); mod_timer(&sport->timer, jiffies); @@ -662,7 +667,7 @@ static void imx_uart_dma_tx(struct imx_port *sport) /* called with port.lock taken and irqs off */ static void imx_uart_start_tx(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); struct tty_port *tport = &sport->port.state->port; u32 ucr1; @@ -1043,7 +1048,7 @@ static irqreturn_t imx_uart_int(int irq, void *dev_id) */ static unsigned int imx_uart_tx_empty(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned int ret; ret = (imx_uart_readl(sport, USR2) & USR2_TXDC) ? TIOCSER_TEMT : 0; @@ -1058,7 +1063,7 @@ static unsigned int imx_uart_tx_empty(struct uart_port *port) /* called with port.lock taken and irqs off */ static unsigned int imx_uart_get_mctrl(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned int ret = imx_uart_get_hwmctrl(sport); mctrl_gpio_get(sport->gpios, &ret); @@ -1069,7 +1074,7 @@ static unsigned int imx_uart_get_mctrl(struct uart_port *port) /* called with port.lock taken and irqs off */ static void imx_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); u32 ucr3, uts; if (!(port->rs485.flags & SER_RS485_ENABLED)) { @@ -1112,7 +1117,7 @@ static void imx_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) */ static void imx_uart_break_ctl(struct uart_port *port, int break_state) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned long flags; u32 ucr1; @@ -1434,7 +1439,7 @@ static void imx_uart_disable_dma(struct imx_port *sport) static int imx_uart_startup(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); int retval; unsigned long flags; int dma_is_inited = 0; @@ -1548,7 +1553,7 @@ static int imx_uart_startup(struct uart_port *port) static void imx_uart_shutdown(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned long flags; u32 ucr1, ucr2, ucr4, uts; @@ -1622,7 +1627,7 @@ static void imx_uart_shutdown(struct uart_port *port) /* called with port.lock taken and irqs off */ static void imx_uart_flush_buffer(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); struct scatterlist *sgl = &sport->tx_sgl[0]; if (!sport->dma_chan_tx) @@ -1649,7 +1654,7 @@ static void imx_uart_set_termios(struct uart_port *port, struct ktermios *termios, const struct ktermios *old) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned long flags; u32 ucr2, old_ucr2, ufcr; unsigned int baud, quot; @@ -1852,7 +1857,7 @@ imx_uart_verify_port(struct uart_port *port, struct serial_struct *ser) static int imx_uart_poll_init(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned long flags; u32 ucr1, ucr2; int retval; @@ -1901,7 +1906,7 @@ static int imx_uart_poll_init(struct uart_port *port) static int imx_uart_poll_get_char(struct uart_port *port) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); if (!(imx_uart_readl(sport, USR2) & USR2_RDR)) return NO_POLL_CHAR; @@ -1910,7 +1915,7 @@ static int imx_uart_poll_get_char(struct uart_port *port) static void imx_uart_poll_put_char(struct uart_port *port, unsigned char c) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); unsigned int status; /* drain */ @@ -1932,7 +1937,7 @@ static void imx_uart_poll_put_char(struct uart_port *port, unsigned char c) static int imx_uart_rs485_config(struct uart_port *port, struct ktermios *termios, struct serial_rs485 *rs485conf) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); u32 ucr2; if (rs485conf->flags & SER_RS485_ENABLED) { @@ -1986,7 +1991,7 @@ static struct imx_port *imx_uart_ports[UART_NR]; #if IS_ENABLED(CONFIG_SERIAL_IMX_CONSOLE) static void imx_uart_console_putchar(struct uart_port *port, unsigned char ch) { - struct imx_port *sport = (struct imx_port *)port; + struct imx_port *sport = to_imx_port(port); while (imx_uart_readl(sport, imx_uart_uts_reg(sport)) & UTS_TXFULL) barrier();