From: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
To: gregkh@linuxfoundation.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
"Jiri Slaby (SUSE)" <jirislaby@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
sparclinux@vger.kernel.org
Subject: [PATCH v2 23/31] tty: sunsu: drop serial_{in,out}p()
Date: Mon, 17 Mar 2025 08:00:38 +0100 [thread overview]
Message-ID: <20250317070046.24386-24-jirislaby@kernel.org> (raw)
In-Reply-To: <20250317070046.24386-1-jirislaby@kernel.org>
They are simple wrappers around serial_{in/out}() without actually
pausing the execution. Since ever. So drop these useless wrappers.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
---
drivers/tty/serial/sunsu.c | 164 +++++++++++++++++--------------------
1 file changed, 77 insertions(+), 87 deletions(-)
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 7f0fef07e141..2dc68b3201a4 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -150,16 +150,6 @@ static void serial_out(struct uart_sunsu_port *up, int offset, int value)
}
}
-/*
- * We used to support using pause I/O for certain machines. We
- * haven't supported this for a while, but just in case it's badly
- * needed for certain old 386 machines, I've left these #define's
- * in....
- */
-#define serial_inp(up, offset) serial_in(up, offset)
-#define serial_outp(up, offset, value) serial_out(up, offset, value)
-
-
/*
* For the 16C950
*/
@@ -193,12 +183,12 @@ static int __enable_rsa(struct uart_sunsu_port *up)
unsigned char mode;
int result;
- mode = serial_inp(up, UART_RSA_MSR);
+ mode = serial_in(up, UART_RSA_MSR);
result = mode & UART_RSA_MSR_FIFO;
if (!result) {
- serial_outp(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO);
- mode = serial_inp(up, UART_RSA_MSR);
+ serial_out(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO);
+ mode = serial_in(up, UART_RSA_MSR);
result = mode & UART_RSA_MSR_FIFO;
}
@@ -217,7 +207,7 @@ static void enable_rsa(struct uart_sunsu_port *up)
uart_port_unlock_irq(&up->port);
}
if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16)
- serial_outp(up, UART_RSA_FRR, 0);
+ serial_out(up, UART_RSA_FRR, 0);
}
}
@@ -236,12 +226,12 @@ static void disable_rsa(struct uart_sunsu_port *up)
up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) {
uart_port_lock_irq(&up->port);
- mode = serial_inp(up, UART_RSA_MSR);
+ mode = serial_in(up, UART_RSA_MSR);
result = !(mode & UART_RSA_MSR_FIFO);
if (!result) {
- serial_outp(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO);
- mode = serial_inp(up, UART_RSA_MSR);
+ serial_out(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO);
+ mode = serial_in(up, UART_RSA_MSR);
result = !(mode & UART_RSA_MSR_FIFO);
}
@@ -326,7 +316,7 @@ receive_chars(struct uart_sunsu_port *up, unsigned char *status)
int saw_console_brk = 0;
do {
- ch = serial_inp(up, UART_RX);
+ ch = serial_in(up, UART_RX);
flag = TTY_NORMAL;
up->port.icount.rx++;
@@ -387,7 +377,7 @@ receive_chars(struct uart_sunsu_port *up, unsigned char *status)
*/
tty_insert_flip_char(port, 0, TTY_OVERRUN);
ignore_char:
- *status = serial_inp(up, UART_LSR);
+ *status = serial_in(up, UART_LSR);
} while ((*status & UART_LSR_DR) && (max_count-- > 0));
if (saw_console_brk)
@@ -401,7 +391,7 @@ static void transmit_chars(struct uart_sunsu_port *up)
int count;
if (up->port.x_char) {
- serial_outp(up, UART_TX, up->port.x_char);
+ serial_out(up, UART_TX, up->port.x_char);
up->port.icount.tx++;
up->port.x_char = 0;
return;
@@ -460,7 +450,7 @@ static irqreturn_t sunsu_serial_interrupt(int irq, void *dev_id)
uart_port_lock_irqsave(&up->port, &flags);
do {
- status = serial_inp(up, UART_LSR);
+ status = serial_in(up, UART_LSR);
if (status & UART_LSR_DR)
receive_chars(up, &status);
check_modem_status(up);
@@ -498,7 +488,7 @@ static void sunsu_change_mouse_baud(struct uart_sunsu_port *up)
static void receive_kbd_ms_chars(struct uart_sunsu_port *up, int is_break)
{
do {
- unsigned char ch = serial_inp(up, UART_RX);
+ unsigned char ch = serial_in(up, UART_RX);
/* Stop-A is handled by drivers/char/keyboard.c now. */
if (up->su_type == SU_PORT_KBD) {
@@ -530,7 +520,7 @@ static irqreturn_t sunsu_kbd_ms_interrupt(int irq, void *dev_id)
struct uart_sunsu_port *up = dev_id;
if (!(serial_in(up, UART_IIR) & UART_IIR_NO_INT)) {
- unsigned char status = serial_inp(up, UART_LSR);
+ unsigned char status = serial_in(up, UART_LSR);
if ((status & UART_LSR_DR) || (status & UART_LSR_BI))
receive_kbd_ms_chars(up, (status & UART_LSR_BI) != 0);
@@ -619,14 +609,14 @@ static int sunsu_startup(struct uart_port *port)
if (up->port.type == PORT_16C950) {
/* Wake up and initialize UART */
up->acr = 0;
- serial_outp(up, UART_LCR, 0xBF);
- serial_outp(up, UART_EFR, UART_EFR_ECB);
- serial_outp(up, UART_IER, 0);
- serial_outp(up, UART_LCR, 0);
+ serial_out(up, UART_LCR, 0xBF);
+ serial_out(up, UART_EFR, UART_EFR_ECB);
+ serial_out(up, UART_IER, 0);
+ serial_out(up, UART_LCR, 0);
serial_icr_write(up, UART_CSR, 0); /* Reset the UART */
- serial_outp(up, UART_LCR, 0xBF);
- serial_outp(up, UART_EFR, UART_EFR_ECB);
- serial_outp(up, UART_LCR, 0);
+ serial_out(up, UART_LCR, 0xBF);
+ serial_out(up, UART_EFR, UART_EFR_ECB);
+ serial_out(up, UART_LCR, 0);
}
#ifdef CONFIG_SERIAL_8250_RSA
@@ -642,19 +632,19 @@ static int sunsu_startup(struct uart_port *port)
* (they will be reenabled in set_termios())
*/
if (uart_config[up->port.type].flags & UART_CLEAR_FIFO) {
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
- serial_outp(up, UART_FCR, 0);
+ serial_out(up, UART_FCR, 0);
}
/*
* Clear the interrupt registers.
*/
- (void) serial_inp(up, UART_LSR);
- (void) serial_inp(up, UART_RX);
- (void) serial_inp(up, UART_IIR);
- (void) serial_inp(up, UART_MSR);
+ (void) serial_in(up, UART_LSR);
+ (void) serial_in(up, UART_RX);
+ (void) serial_in(up, UART_IIR);
+ (void) serial_in(up, UART_MSR);
/*
* At this point, there's no way the LSR could still be 0xff;
@@ -662,7 +652,7 @@ static int sunsu_startup(struct uart_port *port)
* here.
*/
if (!(up->port.flags & UPF_BUGGY_UART) &&
- (serial_inp(up, UART_LSR) == 0xff)) {
+ (serial_in(up, UART_LSR) == 0xff)) {
printk("ttyS%d: LSR safety check engaged!\n", up->port.line);
return -ENODEV;
}
@@ -682,7 +672,7 @@ static int sunsu_startup(struct uart_port *port)
/*
* Now, initialize the UART
*/
- serial_outp(up, UART_LCR, UART_LCR_WLEN8);
+ serial_out(up, UART_LCR, UART_LCR_WLEN8);
uart_port_lock_irqsave(&up->port, &flags);
@@ -697,7 +687,7 @@ static int sunsu_startup(struct uart_port *port)
* anyway, so we don't enable them here.
*/
up->ier = UART_IER_RLSI | UART_IER_RDI;
- serial_outp(up, UART_IER, up->ier);
+ serial_out(up, UART_IER, up->ier);
if (up->port.flags & UPF_FOURPORT) {
unsigned int icp;
@@ -712,10 +702,10 @@ static int sunsu_startup(struct uart_port *port)
/*
* And clear the interrupt registers again for luck.
*/
- (void) serial_inp(up, UART_LSR);
- (void) serial_inp(up, UART_RX);
- (void) serial_inp(up, UART_IIR);
- (void) serial_inp(up, UART_MSR);
+ (void) serial_in(up, UART_LSR);
+ (void) serial_in(up, UART_RX);
+ (void) serial_in(up, UART_IIR);
+ (void) serial_in(up, UART_MSR);
return 0;
}
@@ -730,7 +720,7 @@ static void sunsu_shutdown(struct uart_port *port)
* Disable interrupts from this port
*/
up->ier = 0;
- serial_outp(up, UART_IER, 0);
+ serial_out(up, UART_IER, 0);
uart_port_lock_irqsave(&up->port, &flags);
if (up->port.flags & UPF_FOURPORT) {
@@ -746,11 +736,11 @@ static void sunsu_shutdown(struct uart_port *port)
/*
* Disable break condition and FIFOs
*/
- serial_out(up, UART_LCR, serial_inp(up, UART_LCR) & ~UART_LCR_SBC);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
+ serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR |
UART_FCR_CLEAR_XMIT);
- serial_outp(up, UART_FCR, 0);
+ serial_out(up, UART_FCR, 0);
#ifdef CONFIG_SERIAL_8250_RSA
/*
@@ -872,22 +862,22 @@ sunsu_change_speed(struct uart_port *port, unsigned int cflag,
serial_out(up, UART_IER, up->ier);
if (uart_config[up->port.type].flags & UART_STARTECH) {
- serial_outp(up, UART_LCR, 0xBF);
- serial_outp(up, UART_EFR, cflag & CRTSCTS ? UART_EFR_CTS :0);
+ serial_out(up, UART_LCR, 0xBF);
+ serial_out(up, UART_EFR, cflag & CRTSCTS ? UART_EFR_CTS :0);
}
- serial_outp(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
- serial_outp(up, UART_DLL, quot & 0xff); /* LS of divisor */
- serial_outp(up, UART_DLM, quot >> 8); /* MS of divisor */
+ serial_out(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
+ serial_out(up, UART_DLL, quot & 0xff); /* LS of divisor */
+ serial_out(up, UART_DLM, quot >> 8); /* MS of divisor */
if (up->port.type == PORT_16750)
- serial_outp(up, UART_FCR, fcr); /* set fcr */
- serial_outp(up, UART_LCR, cval); /* reset DLAB */
+ serial_out(up, UART_FCR, fcr); /* set fcr */
+ serial_out(up, UART_LCR, cval); /* reset DLAB */
up->lcr = cval; /* Save LCR */
if (up->port.type != PORT_16750) {
if (fcr & UART_FCR_ENABLE_FIFO) {
/* emulated UARTs (Lucent Venus 167x) need two steps */
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
}
- serial_outp(up, UART_FCR, fcr); /* set fcr */
+ serial_out(up, UART_FCR, fcr); /* set fcr */
}
up->cflag = cflag;
@@ -1051,18 +1041,18 @@ static void sunsu_autoconfig(struct uart_sunsu_port *up)
* 0x80 is a non-existent port; which should be safe since
* include/asm/io.h also makes this assumption.
*/
- scratch = serial_inp(up, UART_IER);
- serial_outp(up, UART_IER, 0);
+ scratch = serial_in(up, UART_IER);
+ serial_out(up, UART_IER, 0);
#ifdef __i386__
outb(0xff, 0x080);
#endif
- scratch2 = serial_inp(up, UART_IER);
- serial_outp(up, UART_IER, 0x0f);
+ scratch2 = serial_in(up, UART_IER);
+ serial_out(up, UART_IER, 0x0f);
#ifdef __i386__
outb(0, 0x080);
#endif
- scratch3 = serial_inp(up, UART_IER);
- serial_outp(up, UART_IER, scratch);
+ scratch3 = serial_in(up, UART_IER);
+ serial_out(up, UART_IER, scratch);
if (scratch2 != 0 || scratch3 != 0x0F)
goto out; /* We failed; there's nothing here */
}
@@ -1080,16 +1070,16 @@ static void sunsu_autoconfig(struct uart_sunsu_port *up)
* that conflicts with COM 1-4 --- we hope!
*/
if (!(up->port.flags & UPF_SKIP_TEST)) {
- serial_outp(up, UART_MCR, UART_MCR_LOOP | 0x0A);
- status1 = serial_inp(up, UART_MSR) & 0xF0;
- serial_outp(up, UART_MCR, save_mcr);
+ serial_out(up, UART_MCR, UART_MCR_LOOP | 0x0A);
+ status1 = serial_in(up, UART_MSR) & 0xF0;
+ serial_out(up, UART_MCR, save_mcr);
if (status1 != 0x90)
goto out; /* We failed loopback test */
}
- serial_outp(up, UART_LCR, 0xBF); /* set up for StarTech test */
- serial_outp(up, UART_EFR, 0); /* EFR is the same as FCR */
- serial_outp(up, UART_LCR, 0);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_LCR, 0xBF); /* set up for StarTech test */
+ serial_out(up, UART_EFR, 0); /* EFR is the same as FCR */
+ serial_out(up, UART_LCR, 0);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
scratch = serial_in(up, UART_IIR) >> 6;
switch (scratch) {
case 0:
@@ -1107,19 +1097,19 @@ static void sunsu_autoconfig(struct uart_sunsu_port *up)
}
if (up->port.type == PORT_16550A) {
/* Check for Startech UART's */
- serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ serial_out(up, UART_LCR, UART_LCR_DLAB);
if (serial_in(up, UART_EFR) == 0) {
up->port.type = PORT_16650;
} else {
- serial_outp(up, UART_LCR, 0xBF);
+ serial_out(up, UART_LCR, 0xBF);
if (serial_in(up, UART_EFR) == 0)
up->port.type = PORT_16650V2;
}
}
if (up->port.type == PORT_16550A) {
/* Check for TI 16750 */
- serial_outp(up, UART_LCR, save_lcr | UART_LCR_DLAB);
- serial_outp(up, UART_FCR,
+ serial_out(up, UART_LCR, save_lcr | UART_LCR_DLAB);
+ serial_out(up, UART_FCR,
UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
scratch = serial_in(up, UART_IIR) >> 5;
if (scratch == 7) {
@@ -1129,24 +1119,24 @@ static void sunsu_autoconfig(struct uart_sunsu_port *up)
* mode if the UART_FCR7_64BYTE bit was set
* while UART_LCR_DLAB was latched.
*/
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(up, UART_LCR, 0);
- serial_outp(up, UART_FCR,
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_LCR, 0);
+ serial_out(up, UART_FCR,
UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
scratch = serial_in(up, UART_IIR) >> 5;
if (scratch == 6)
up->port.type = PORT_16750;
}
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
}
- serial_outp(up, UART_LCR, save_lcr);
+ serial_out(up, UART_LCR, save_lcr);
if (up->port.type == PORT_16450) {
scratch = serial_in(up, UART_SCR);
- serial_outp(up, UART_SCR, 0xa5);
+ serial_out(up, UART_SCR, 0xa5);
status1 = serial_in(up, UART_SCR);
- serial_outp(up, UART_SCR, 0x5a);
+ serial_out(up, UART_SCR, 0x5a);
status2 = serial_in(up, UART_SCR);
- serial_outp(up, UART_SCR, scratch);
+ serial_out(up, UART_SCR, scratch);
if ((status1 != 0xa5) || (status2 != 0x5a))
up->port.type = PORT_8250;
@@ -1163,15 +1153,15 @@ static void sunsu_autoconfig(struct uart_sunsu_port *up)
*/
#ifdef CONFIG_SERIAL_8250_RSA
if (up->port.type == PORT_RSA)
- serial_outp(up, UART_RSA_FRR, 0);
+ serial_out(up, UART_RSA_FRR, 0);
#endif
- serial_outp(up, UART_MCR, save_mcr);
- serial_outp(up, UART_FCR, (UART_FCR_ENABLE_FIFO |
+ serial_out(up, UART_MCR, save_mcr);
+ serial_out(up, UART_FCR, (UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR |
UART_FCR_CLEAR_XMIT));
- serial_outp(up, UART_FCR, 0);
+ serial_out(up, UART_FCR, 0);
(void)serial_in(up, UART_RX);
- serial_outp(up, UART_IER, 0);
+ serial_out(up, UART_IER, 0);
out:
uart_port_unlock_irqrestore(&up->port, flags);
--
2.49.0
next prev parent reply other threads:[~2025-03-17 7:01 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-17 7:00 [PATCH v2 00/31] tty: cleanup no. 99 Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 01/31] tty: convert "TTY Struct Flags" to an enum Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 02/31] tty: audit: do not use N_TTY_BUF_SIZE Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 03/31] tty: caif: " Jiri Slaby (SUSE)
2025-03-20 11:17 ` Simon Horman
2025-03-17 7:00 ` [PATCH v2 04/31] tty: move N_TTY_BUF_SIZE to n_tty Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 05/31] tty: n_tty: use uint for space returned by tty_write_room() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 06/31] tty: n_tty: simplify process_output() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 07/31] tty: n_tty: clean up process_output_block() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 08/31] tty: n_tty: drop n_tty_trace() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 09/31] tty: n_tty: extract n_tty_continue_cookie() from n_tty_read() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 10/31] tty: n_tty: extract n_tty_wait_for_input() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 11/31] tty: n_tty: move more_to_be_read to the end of n_tty_read() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 12/31] tty: tty_driver: move TTY macros to the top Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 13/31] tty: tty_driver: convert "TTY Driver Flags" to an enum Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 14/31] tty: tty_driver: document both {,__}tty_alloc_driver() properly Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 15/31] tty: tty_driver: introduce TTY driver sub/types enums Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 16/31] tty: serdev: drop serdev_controller_ops::write_room() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 17/31] tty: mmc: sdio: use bool for cts and remove parentheses Jiri Slaby (SUSE)
2025-03-17 10:50 ` Ulf Hansson
2025-03-17 7:00 ` [PATCH v2 18/31] tty: moxa: drop version dump to logs Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 19/31] tty: moxa: drop ISA support Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 20/31] tty: moxa: carve out special ioctls and extra tty_port Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 21/31] tty: srmcons: fix retval from srmcons_init() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 22/31] tty: staging/greybus: pass tty_driver flags to tty_alloc_driver() Jiri Slaby (SUSE)
2025-03-17 12:35 ` Alex Elder
2025-03-17 7:00 ` Jiri Slaby (SUSE) [this message]
2025-03-17 7:00 ` [PATCH v2 24/31] tty: sunsu: remove unused serial_icr_read() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 25/31] serial: remove redundant tty_port_link_device() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 26/31] serial: pass struct uart_state to uart_line_info() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 27/31] serial: 8250: use serial_port_in/out() helpers Jiri Slaby (SUSE)
2025-03-17 7:25 ` Andy Shevchenko
2025-03-17 7:42 ` Jiri Slaby
2025-03-17 7:00 ` [PATCH v2 28/31] serial: 8250_rsa: simplify rsa8250_{request/release}_resource() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 29/31] serial: 8250_port: do not use goto for UPQ_NO_TXEN_TEST code flow Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 30/31] serial: 8250_port: simplify serial8250_request_std_resource() Jiri Slaby (SUSE)
2025-03-17 7:00 ` [PATCH v2 31/31] serial: switch change_irq and change_port to bool in uart_set_info() Jiri Slaby (SUSE)
2025-03-17 7:03 ` [PATCH v2 00/31] tty: cleanup no. 99 Jiri Slaby
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