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-rw-r--r--drivers/tty/serial/8250/8250_port.c2
-rw-r--r--drivers/tty/serial/atmel_serial.c2
-rw-r--r--drivers/tty/serial/imx.c2
-rw-r--r--drivers/tty/serial/jsm/jsm_tty.c1
-rw-r--r--drivers/tty/serial/msm_serial.c6
-rw-r--r--drivers/tty/serial/serial_mctrl_gpio.c34
-rw-r--r--drivers/tty/serial/serial_mctrl_gpio.h17
-rw-r--r--drivers/tty/serial/sh-sci.c98
-rw-r--r--drivers/tty/serial/sifive.c6
-rw-r--r--drivers/tty/serial/stm32-usart.c2
-rw-r--r--drivers/tty/vt/selection.c5
11 files changed, 155 insertions, 20 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 442967a6cd52..886e40f680d4 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -1680,7 +1680,7 @@ static void serial8250_disable_ms(struct uart_port *port)
if (up->bugs & UART_BUG_NOMSR)
return;
- mctrl_gpio_disable_ms(up->gpios);
+ mctrl_gpio_disable_ms_no_sync(up->gpios);
up->ier &= ~UART_IER_MSI;
serial_port_out(port, UART_IER, up->ier);
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index f44f9d20a974..8918fbd4bddd 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -700,7 +700,7 @@ static void atmel_disable_ms(struct uart_port *port)
atmel_port->ms_irq_enabled = false;
- mctrl_gpio_disable_ms(atmel_port->gpios);
+ mctrl_gpio_disable_ms_no_sync(atmel_port->gpios);
if (!mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_CTS))
idr |= ATMEL_US_CTSIC;
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 9c59ec128bb4..cfeb3f8cf45e 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1608,7 +1608,7 @@ static void imx_uart_shutdown(struct uart_port *port)
imx_uart_dma_exit(sport);
}
- mctrl_gpio_disable_ms(sport->gpios);
+ mctrl_gpio_disable_ms_sync(sport->gpios);
uart_port_lock_irqsave(&sport->port, &flags);
ucr2 = imx_uart_readl(sport, UCR2);
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index ce0fef7e2c66..be2f130696b3 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -451,6 +451,7 @@ int jsm_uart_port_init(struct jsm_board *brd)
if (!brd->channels[i])
continue;
+ brd->channels[i]->uart_port.dev = &brd->pci_dev->dev;
brd->channels[i]->uart_port.irq = brd->irq;
brd->channels[i]->uart_port.uartclk = 14745600;
brd->channels[i]->uart_port.type = PORT_JSM;
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 1b137e068444..3449945493ce 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -1746,6 +1746,12 @@ msm_serial_early_console_setup_dm(struct earlycon_device *device,
if (!device->port.membase)
return -ENODEV;
+ /* Disable DM / single-character modes */
+ msm_write(&device->port, 0, UARTDM_DMEN);
+ msm_write(&device->port, MSM_UART_CR_CMD_RESET_RX, MSM_UART_CR);
+ msm_write(&device->port, MSM_UART_CR_CMD_RESET_TX, MSM_UART_CR);
+ msm_write(&device->port, MSM_UART_CR_TX_ENABLE, MSM_UART_CR);
+
device->con->write = msm_serial_early_write_dm;
return 0;
}
diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c
index 8855688a5b6c..ca55bcc0b611 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.c
+++ b/drivers/tty/serial/serial_mctrl_gpio.c
@@ -322,11 +322,7 @@ void mctrl_gpio_enable_ms(struct mctrl_gpios *gpios)
}
EXPORT_SYMBOL_GPL(mctrl_gpio_enable_ms);
-/**
- * mctrl_gpio_disable_ms - disable irqs and handling of changes to the ms lines
- * @gpios: gpios to disable
- */
-void mctrl_gpio_disable_ms(struct mctrl_gpios *gpios)
+static void mctrl_gpio_disable_ms(struct mctrl_gpios *gpios, bool sync)
{
enum mctrl_gpio_idx i;
@@ -342,10 +338,34 @@ void mctrl_gpio_disable_ms(struct mctrl_gpios *gpios)
if (!gpios->irq[i])
continue;
- disable_irq(gpios->irq[i]);
+ if (sync)
+ disable_irq(gpios->irq[i]);
+ else
+ disable_irq_nosync(gpios->irq[i]);
}
}
-EXPORT_SYMBOL_GPL(mctrl_gpio_disable_ms);
+
+/**
+ * mctrl_gpio_disable_ms_sync - disable irqs and handling of changes to the ms
+ * lines, and wait for any pending IRQ to be processed
+ * @gpios: gpios to disable
+ */
+void mctrl_gpio_disable_ms_sync(struct mctrl_gpios *gpios)
+{
+ mctrl_gpio_disable_ms(gpios, true);
+}
+EXPORT_SYMBOL_GPL(mctrl_gpio_disable_ms_sync);
+
+/**
+ * mctrl_gpio_disable_ms_no_sync - disable irqs and handling of changes to the
+ * ms lines, and return immediately
+ * @gpios: gpios to disable
+ */
+void mctrl_gpio_disable_ms_no_sync(struct mctrl_gpios *gpios)
+{
+ mctrl_gpio_disable_ms(gpios, false);
+}
+EXPORT_SYMBOL_GPL(mctrl_gpio_disable_ms_no_sync);
void mctrl_gpio_enable_irq_wake(struct mctrl_gpios *gpios)
{
diff --git a/drivers/tty/serial/serial_mctrl_gpio.h b/drivers/tty/serial/serial_mctrl_gpio.h
index fc76910fb105..79e97838ebe5 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.h
+++ b/drivers/tty/serial/serial_mctrl_gpio.h
@@ -87,9 +87,16 @@ void mctrl_gpio_free(struct device *dev, struct mctrl_gpios *gpios);
void mctrl_gpio_enable_ms(struct mctrl_gpios *gpios);
/*
- * Disable gpio interrupts to report status line changes.
+ * Disable gpio interrupts to report status line changes, and block until
+ * any corresponding IRQ is processed
*/
-void mctrl_gpio_disable_ms(struct mctrl_gpios *gpios);
+void mctrl_gpio_disable_ms_sync(struct mctrl_gpios *gpios);
+
+/*
+ * Disable gpio interrupts to report status line changes, and return
+ * immediately
+ */
+void mctrl_gpio_disable_ms_no_sync(struct mctrl_gpios *gpios);
/*
* Enable gpio wakeup interrupts to enable wake up source.
@@ -148,7 +155,11 @@ static inline void mctrl_gpio_enable_ms(struct mctrl_gpios *gpios)
{
}
-static inline void mctrl_gpio_disable_ms(struct mctrl_gpios *gpios)
+static inline void mctrl_gpio_disable_ms_sync(struct mctrl_gpios *gpios)
+{
+}
+
+static inline void mctrl_gpio_disable_ms_no_sync(struct mctrl_gpios *gpios)
{
}
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index b1ea48f38248..0219135caafa 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -104,6 +104,20 @@ struct plat_sci_reg {
u8 offset, size;
};
+struct sci_suspend_regs {
+ u16 scdl;
+ u16 sccks;
+ u16 scsmr;
+ u16 scscr;
+ u16 scfcr;
+ u16 scsptr;
+ u16 hssrr;
+ u16 scpcr;
+ u16 scpdr;
+ u8 scbrr;
+ u8 semr;
+};
+
struct sci_port_params {
const struct plat_sci_reg regs[SCIx_NR_REGS];
unsigned int fifosize;
@@ -134,6 +148,8 @@ struct sci_port {
struct dma_chan *chan_tx;
struct dma_chan *chan_rx;
+ struct reset_control *rstc;
+
#ifdef CONFIG_SERIAL_SH_SCI_DMA
struct dma_chan *chan_tx_saved;
struct dma_chan *chan_rx_saved;
@@ -153,6 +169,7 @@ struct sci_port {
int rx_trigger;
struct timer_list rx_fifo_timer;
int rx_fifo_timeout;
+ struct sci_suspend_regs suspend_regs;
u16 hscif_tot;
bool has_rtscts;
@@ -2298,7 +2315,7 @@ static void sci_shutdown(struct uart_port *port)
dev_dbg(port->dev, "%s(%d)\n", __func__, port->line);
s->autorts = false;
- mctrl_gpio_disable_ms(to_sci_port(port)->gpios);
+ mctrl_gpio_disable_ms_sync(to_sci_port(port)->gpios);
uart_port_lock_irqsave(port, &flags);
sci_stop_rx(port);
@@ -3374,6 +3391,7 @@ static struct plat_sci_port *sci_parse_dt(struct platform_device *pdev,
}
sp = &sci_ports[id];
+ sp->rstc = rstc;
*dev_id = id;
p->type = SCI_OF_TYPE(data);
@@ -3546,13 +3564,77 @@ static int sci_probe(struct platform_device *dev)
return 0;
}
+static void sci_console_save(struct sci_port *s)
+{
+ struct sci_suspend_regs *regs = &s->suspend_regs;
+ struct uart_port *port = &s->port;
+
+ if (sci_getreg(port, SCDL)->size)
+ regs->scdl = sci_serial_in(port, SCDL);
+ if (sci_getreg(port, SCCKS)->size)
+ regs->sccks = sci_serial_in(port, SCCKS);
+ if (sci_getreg(port, SCSMR)->size)
+ regs->scsmr = sci_serial_in(port, SCSMR);
+ if (sci_getreg(port, SCSCR)->size)
+ regs->scscr = sci_serial_in(port, SCSCR);
+ if (sci_getreg(port, SCFCR)->size)
+ regs->scfcr = sci_serial_in(port, SCFCR);
+ if (sci_getreg(port, SCSPTR)->size)
+ regs->scsptr = sci_serial_in(port, SCSPTR);
+ if (sci_getreg(port, SCBRR)->size)
+ regs->scbrr = sci_serial_in(port, SCBRR);
+ if (sci_getreg(port, HSSRR)->size)
+ regs->hssrr = sci_serial_in(port, HSSRR);
+ if (sci_getreg(port, SCPCR)->size)
+ regs->scpcr = sci_serial_in(port, SCPCR);
+ if (sci_getreg(port, SCPDR)->size)
+ regs->scpdr = sci_serial_in(port, SCPDR);
+ if (sci_getreg(port, SEMR)->size)
+ regs->semr = sci_serial_in(port, SEMR);
+}
+
+static void sci_console_restore(struct sci_port *s)
+{
+ struct sci_suspend_regs *regs = &s->suspend_regs;
+ struct uart_port *port = &s->port;
+
+ if (sci_getreg(port, SCDL)->size)
+ sci_serial_out(port, SCDL, regs->scdl);
+ if (sci_getreg(port, SCCKS)->size)
+ sci_serial_out(port, SCCKS, regs->sccks);
+ if (sci_getreg(port, SCSMR)->size)
+ sci_serial_out(port, SCSMR, regs->scsmr);
+ if (sci_getreg(port, SCSCR)->size)
+ sci_serial_out(port, SCSCR, regs->scscr);
+ if (sci_getreg(port, SCFCR)->size)
+ sci_serial_out(port, SCFCR, regs->scfcr);
+ if (sci_getreg(port, SCSPTR)->size)
+ sci_serial_out(port, SCSPTR, regs->scsptr);
+ if (sci_getreg(port, SCBRR)->size)
+ sci_serial_out(port, SCBRR, regs->scbrr);
+ if (sci_getreg(port, HSSRR)->size)
+ sci_serial_out(port, HSSRR, regs->hssrr);
+ if (sci_getreg(port, SCPCR)->size)
+ sci_serial_out(port, SCPCR, regs->scpcr);
+ if (sci_getreg(port, SCPDR)->size)
+ sci_serial_out(port, SCPDR, regs->scpdr);
+ if (sci_getreg(port, SEMR)->size)
+ sci_serial_out(port, SEMR, regs->semr);
+}
+
static __maybe_unused int sci_suspend(struct device *dev)
{
struct sci_port *sport = dev_get_drvdata(dev);
- if (sport)
+ if (sport) {
uart_suspend_port(&sci_uart_driver, &sport->port);
+ if (!console_suspend_enabled && uart_console(&sport->port))
+ sci_console_save(sport);
+ else
+ return reset_control_assert(sport->rstc);
+ }
+
return 0;
}
@@ -3560,8 +3642,18 @@ static __maybe_unused int sci_resume(struct device *dev)
{
struct sci_port *sport = dev_get_drvdata(dev);
- if (sport)
+ if (sport) {
+ if (!console_suspend_enabled && uart_console(&sport->port)) {
+ sci_console_restore(sport);
+ } else {
+ int ret = reset_control_deassert(sport->rstc);
+
+ if (ret)
+ return ret;
+ }
+
uart_resume_port(&sci_uart_driver, &sport->port);
+ }
return 0;
}
diff --git a/drivers/tty/serial/sifive.c b/drivers/tty/serial/sifive.c
index 5904a2d4cefa..054a8e630ace 100644
--- a/drivers/tty/serial/sifive.c
+++ b/drivers/tty/serial/sifive.c
@@ -563,8 +563,11 @@ static void sifive_serial_break_ctl(struct uart_port *port, int break_state)
static int sifive_serial_startup(struct uart_port *port)
{
struct sifive_serial_port *ssp = port_to_sifive_serial_port(port);
+ unsigned long flags;
+ uart_port_lock_irqsave(&ssp->port, &flags);
__ssp_enable_rxwm(ssp);
+ uart_port_unlock_irqrestore(&ssp->port, flags);
return 0;
}
@@ -572,9 +575,12 @@ static int sifive_serial_startup(struct uart_port *port)
static void sifive_serial_shutdown(struct uart_port *port)
{
struct sifive_serial_port *ssp = port_to_sifive_serial_port(port);
+ unsigned long flags;
+ uart_port_lock_irqsave(&ssp->port, &flags);
__ssp_disable_rxwm(ssp);
__ssp_disable_txwm(ssp);
+ uart_port_unlock_irqrestore(&ssp->port, flags);
}
/**
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 0854ad8c90cd..ad06b760cfca 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -944,7 +944,7 @@ static void stm32_usart_enable_ms(struct uart_port *port)
static void stm32_usart_disable_ms(struct uart_port *port)
{
- mctrl_gpio_disable_ms(to_stm32_port(port)->gpios);
+ mctrl_gpio_disable_ms_sync(to_stm32_port(port)->gpios);
}
/* Transmit stop */
diff --git a/drivers/tty/vt/selection.c b/drivers/tty/vt/selection.c
index 0bd6544e30a6..791e2f1f7c0b 100644
--- a/drivers/tty/vt/selection.c
+++ b/drivers/tty/vt/selection.c
@@ -193,13 +193,12 @@ int set_selection_user(const struct tiocl_selection __user *sel,
return -EFAULT;
/*
- * TIOCL_SELCLEAR, TIOCL_SELPOINTER and TIOCL_SELMOUSEREPORT are OK to
- * use without CAP_SYS_ADMIN as they do not modify the selection.
+ * TIOCL_SELCLEAR and TIOCL_SELPOINTER are OK to use without
+ * CAP_SYS_ADMIN as they do not modify the selection.
*/
switch (v.sel_mode) {
case TIOCL_SELCLEAR:
case TIOCL_SELPOINTER:
- case TIOCL_SELMOUSEREPORT:
break;
default:
if (!capable(CAP_SYS_ADMIN))
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-12 14:20:28 +0300