[v3,6/6] serial: Consolidate BOTH_EMPTY use

Message ID	20220624205424.12686-7-ilpo.jarvinen@linux.intel.com (mailing list archive)
State	Handled Elsewhere
Headers	show Return-Path: <linux-mips-owner@kernel.org> From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com> To: linux-serial@vger.kernel.org, Greg KH <gregkh@linuxfoundation.org>, Jiri Slaby <jirislaby@kernel.org>, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, William Hubbs <w.d.hubbs@gmail.com>, Chris Brannon <chris@the-brannons.com>, Kirk Reiser <kirk@reisers.ca>, Samuel Thibault <samuel.thibault@ens-lyon.org>, "David S. Miller" <davem@davemloft.net>, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, speakup@linux-speakup.org, sparclinux@vger.kernel.org Cc: =?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com> Subject: [PATCH v3 6/6] serial: Consolidate BOTH_EMPTY use Date: Fri, 24 Jun 2022 23:54:24 +0300 Message-Id: <20220624205424.12686-7-ilpo.jarvinen@linux.intel.com> In-Reply-To: <20220624205424.12686-1-ilpo.jarvinen@linux.intel.com> References: <20220624205424.12686-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	None \| expand [v3,6/6] serial: Consolidate BOTH_EMPTY use

diff --git a/arch/mips/ath79/early_printk.c b/arch/mips/ath79/early_printk.c index 8751d067f98f..f6d02b425a10 100644 --- a/arch/mips/ath79/early_printk.c +++ b/arch/mips/ath79/early_printk.c @@ -8,6 +8,7 @@ #include <linux/io.h> #include <linux/errno.h> +#include <linux/serial.h> #include <linux/serial_reg.h> #include <asm/addrspace.h> #include <asm/setup.h> @@ -29,15 +30,15 @@ static inline void prom_putchar_wait(void __iomem *reg, u32 mask, u32 val) } while (1); } -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - static void prom_putchar_ar71xx(char ch) { void __iomem *base = (void __iomem *)(KSEG1ADDR(AR71XX_UART_BASE)); - prom_putchar_wait(base + UART_LSR * 4, BOTH_EMPTY, BOTH_EMPTY); + prom_putchar_wait(base + UART_LSR * 4, UART_LSR_BOTH_EMPTY, + UART_LSR_BOTH_EMPTY); __raw_writel((unsigned char)ch, base + UART_TX * 4); - prom_putchar_wait(base + UART_LSR * 4, BOTH_EMPTY, BOTH_EMPTY); + prom_putchar_wait(base + UART_LSR * 4, UART_LSR_BOTH_EMPTY, + UART_LSR_BOTH_EMPTY); } static void prom_putchar_ar933x(char ch) diff --git a/drivers/accessibility/speakup/serialio.h b/drivers/accessibility/speakup/serialio.h index 6f8f86f161bb..b4f9a1925b81 100644 --- a/drivers/accessibility/speakup/serialio.h +++ b/drivers/accessibility/speakup/serialio.h @@ -33,9 +33,8 @@ struct old_serial_port { #define NUM_DISABLE_TIMEOUTS 3 /* buffer timeout in ms */ #define SPK_TIMEOUT 100 -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) #define spk_serial_tx_busy() \ - ((inb(speakup_info.port_tts + UART_LSR) & BOTH_EMPTY) != BOTH_EMPTY) + (!uart_lsr_tx_empty(inb(speakup_info.port_tts + UART_LSR))) #endif diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c index e52585064565..f271becfc46c 100644 --- a/drivers/tty/serial/8250/8250_early.c +++ b/drivers/tty/serial/8250/8250_early.c @@ -84,8 +84,6 @@ static void serial8250_early_out(struct uart_port *port, int offset, int value) } } -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - static void serial_putc(struct uart_port *port, unsigned char c) { unsigned int status; @@ -94,7 +92,7 @@ static void serial_putc(struct uart_port *port, unsigned char c) for (;;) { status = serial8250_early_in(port, UART_LSR); - if ((status & BOTH_EMPTY) == BOTH_EMPTY) + if (uart_lsr_tx_empty(status)) break; cpu_relax(); } diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 432742a567b6..647bd351e611 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -50,8 +50,6 @@ #define DEBUG_AUTOCONF(fmt...) do { } while (0) #endif -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - /* * Here we define the default xmit fifo size used for each type of UART. */ @@ -1841,7 +1839,7 @@ void serial8250_tx_chars(struct uart_8250_port *up) if (uart_circ_empty(xmit)) break; if ((up->capabilities & UART_CAP_HFIFO) && - (serial_in(up, UART_LSR) & BOTH_EMPTY) != BOTH_EMPTY) + !uart_lsr_tx_empty(serial_in(up, UART_LSR))) break; /* The BCM2835 MINI UART THRE bit is really a not-full bit. */ if ((up->capabilities & UART_CAP_MINI) && @@ -2001,7 +1999,7 @@ static unsigned int serial8250_tx_empty(struct uart_port *port) serial8250_rpm_put(up); - return (lsr & BOTH_EMPTY) == BOTH_EMPTY ? TIOCSER_TEMT : 0; + return uart_lsr_tx_empty(lsr) ? TIOCSER_TEMT : 0; } unsigned int serial8250_do_get_mctrl(struct uart_port *port) @@ -2149,7 +2147,7 @@ static void serial8250_put_poll_char(struct uart_port *port, else serial_port_out(port, UART_IER, 0); - wait_for_xmitr(up, BOTH_EMPTY); + wait_for_xmitr(up, UART_LSR_BOTH_EMPTY); /* * Send the character out. */ @@ -2159,7 +2157,7 @@ static void serial8250_put_poll_char(struct uart_port *port, * Finally, wait for transmitter to become empty * and restore the IER */ - wait_for_xmitr(up, BOTH_EMPTY); + wait_for_xmitr(up, UART_LSR_BOTH_EMPTY); serial_port_out(port, UART_IER, ier); serial8250_rpm_put(up); } @@ -3429,7 +3427,7 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s, * Finally, wait for transmitter to become empty * and restore the IER */ - wait_for_xmitr(up, BOTH_EMPTY); + wait_for_xmitr(up, UART_LSR_BOTH_EMPTY); if (em485) { mdelay(port->rs485.delay_rts_after_send); diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 98622c35d896..52cb1a68b053 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -19,6 +19,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/console.h> +#include <linux/serial.h> #include <linux/serial_reg.h> #include <linux/delay.h> #include <linux/slab.h> @@ -1102,8 +1103,6 @@ serial_omap_type(struct uart_port *port) return up->name; } -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - static void __maybe_unused wait_for_xmitr(struct uart_omap_port *up) { unsigned int status, tmout = 10000; @@ -1118,7 +1117,7 @@ static void __maybe_unused wait_for_xmitr(struct uart_omap_port *up) if (--tmout == 0) break; udelay(1); - } while ((status & BOTH_EMPTY) != BOTH_EMPTY); + } while (!uart_lsr_tx_empty(status)); /* Wait up to 1s for flow control if necessary */ if (up->port.flags & UPF_CONS_FLOW) { @@ -1186,7 +1185,7 @@ static void omap_serial_early_putc(struct uart_port *port, unsigned char c) for (;;) { status = omap_serial_early_in(port, UART_LSR); - if ((status & BOTH_EMPTY) == BOTH_EMPTY) + if (uart_lsr_tx_empty(status)) break; cpu_relax(); } diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 3b26524d48e3..8a9065e4a903 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -3,6 +3,7 @@ *Copyright (C) 2011 LAPIS Semiconductor Co., Ltd. */ #include <linux/kernel.h> +#include <linux/serial.h> #include <linux/serial_reg.h> #include <linux/slab.h> #include <linux/module.h> @@ -189,8 +190,6 @@ enum { #define PCH_UART_HAL_LOOP (PCH_UART_MCR_LOOP) #define PCH_UART_HAL_AFE (PCH_UART_MCR_AFE) -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - #define DEFAULT_UARTCLK 1843200 /* 1.8432 MHz */ #define CMITC_UARTCLK 192000000 /* 192.0000 MHz */ #define FRI2_64_UARTCLK 64000000 /* 64.0000 MHz */ @@ -1516,7 +1515,7 @@ static void pch_uart_put_poll_char(struct uart_port *port, * Finally, wait for transmitter to become empty * and restore the IER */ - wait_for_xmitr(priv, BOTH_EMPTY); + wait_for_xmitr(priv, UART_LSR_BOTH_EMPTY); iowrite8(ier, priv->membase + UART_IER); } #endif /* CONFIG_CONSOLE_POLL */ @@ -1602,7 +1601,7 @@ pch_console_write(struct console *co, const char *s, unsigned int count) * Finally, wait for transmitter to become empty * and restore the IER */ - wait_for_xmitr(priv, BOTH_EMPTY); + wait_for_xmitr(priv, UART_LSR_BOTH_EMPTY); iowrite8(ier, priv->membase + UART_IER); if (port_locked) diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c index e80ba8e10407..9309ffd87c8e 100644 --- a/drivers/tty/serial/pxa.c +++ b/drivers/tty/serial/pxa.c @@ -23,6 +23,7 @@ #include <linux/init.h> #include <linux/console.h> #include <linux/sysrq.h> +#include <linux/serial.h> #include <linux/serial_reg.h> #include <linux/circ_buf.h> #include <linux/delay.h> @@ -575,8 +576,6 @@ static struct uart_driver serial_pxa_reg; #ifdef CONFIG_SERIAL_PXA_CONSOLE -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - /* * Wait for transmitter & holding register to empty */ @@ -594,7 +593,7 @@ static void wait_for_xmitr(struct uart_pxa_port *up) if (--tmout == 0) break; udelay(1); - } while ((status & BOTH_EMPTY) != BOTH_EMPTY); + } while (!uart_lsr_tx_empty(status)); /* Wait up to 1s for flow control if necessary */ if (up->port.flags & UPF_CONS_FLOW) { diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c index fff50b5b82eb..84d545e5a8c7 100644 --- a/drivers/tty/serial/sunsu.c +++ b/drivers/tty/serial/sunsu.c @@ -1249,8 +1249,6 @@ static int sunsu_kbd_ms_init(struct uart_sunsu_port *up) #ifdef CONFIG_SERIAL_SUNSU_CONSOLE -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - /* * Wait for transmitter & holding register to empty */ @@ -1268,7 +1266,7 @@ static void wait_for_xmitr(struct uart_sunsu_port *up) if (--tmout == 0) break; udelay(1); - } while ((status & BOTH_EMPTY) != BOTH_EMPTY); + } while (!uart_lsr_tx_empty(status)); /* Wait up to 1s for flow control if necessary */ if (up->port.flags & UPF_CONS_FLOW) { diff --git a/drivers/tty/serial/vr41xx_siu.c b/drivers/tty/serial/vr41xx_siu.c index e0bf003ca3a1..1ba689a81abd 100644 --- a/drivers/tty/serial/vr41xx_siu.c +++ b/drivers/tty/serial/vr41xx_siu.c @@ -703,8 +703,6 @@ static int siu_init_ports(struct platform_device *pdev) #ifdef CONFIG_SERIAL_VR41XX_CONSOLE -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - static void wait_for_xmitr(struct uart_port *port) { int timeout = 10000; @@ -715,7 +713,7 @@ static void wait_for_xmitr(struct uart_port *port) if (lsr & UART_LSR_BI) lsr_break_flag[port->line] = UART_LSR_BI; - if ((lsr & BOTH_EMPTY) == BOTH_EMPTY) + if (uart_lsr_tx_empty(lsr)) break; } while (timeout-- > 0); diff --git a/include/linux/serial.h b/include/linux/serial.h index 70a9866e4abb..3d6fe3ef92cf 100644 --- a/include/linux/serial.h +++ b/include/linux/serial.h @@ -10,10 +10,19 @@ #define _LINUX_SERIAL_H #include <uapi/linux/serial.h> +#include <uapi/linux/serial_reg.h> /* Helper for dealing with UART_LCR_WLEN* defines */ #define UART_LCR_WLEN(x) ((x) - 5) +/* FIFO and shifting register empty */ +#define UART_LSR_BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) + +static inline bool uart_lsr_tx_empty(u16 lsr) +{ + return (lsr & UART_LSR_BOTH_EMPTY) == UART_LSR_BOTH_EMPTY; +} + /* * Counters of the input lines (CTS, DSR, RI, CD) interrupts */

[v3,6/6] serial: Consolidate BOTH_EMPTY use

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