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-rw-r--r--drivers/tty/serial/8250/8250_pci1xxxx.c10
-rw-r--r--drivers/tty/serial/imx.c17
-rw-r--r--drivers/tty/serial/pch_uart.c2
-rw-r--r--drivers/tty/serial/serial_base_bus.c1
-rw-r--r--drivers/tty/serial/serial_core.c44
-rw-r--r--drivers/tty/serial/sh-sci.c48
-rw-r--r--drivers/tty/serial/uartlite.c25
-rw-r--r--drivers/tty/vt/vt.c1
8 files changed, 105 insertions, 43 deletions
diff --git a/drivers/tty/serial/8250/8250_pci1xxxx.c b/drivers/tty/serial/8250/8250_pci1xxxx.c
index f462b3d1c104..d6b01e015a96 100644
--- a/drivers/tty/serial/8250/8250_pci1xxxx.c
+++ b/drivers/tty/serial/8250/8250_pci1xxxx.c
@@ -115,6 +115,7 @@
#define UART_RESET_REG 0x94
#define UART_RESET_D3_RESET_DISABLE BIT(16)
+#define UART_RESET_HOT_RESET_DISABLE BIT(17)
#define UART_BURST_STATUS_REG 0x9C
#define UART_TX_BURST_FIFO 0xA0
@@ -620,6 +621,10 @@ static int pci1xxxx_suspend(struct device *dev)
}
data = readl(p + UART_RESET_REG);
+
+ if (priv->dev_rev >= 0xC0)
+ data |= UART_RESET_HOT_RESET_DISABLE;
+
writel(data | UART_RESET_D3_RESET_DISABLE, p + UART_RESET_REG);
if (wakeup)
@@ -647,7 +652,12 @@ static int pci1xxxx_resume(struct device *dev)
}
data = readl(p + UART_RESET_REG);
+
+ if (priv->dev_rev >= 0xC0)
+ data &= ~UART_RESET_HOT_RESET_DISABLE;
+
writel(data & ~UART_RESET_D3_RESET_DISABLE, p + UART_RESET_REG);
+
iounmap(p);
for (i = 0; i < priv->nr; i++) {
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 8e3b15534bc7..deb9635cb48d 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -233,6 +233,7 @@ struct imx_port {
enum imx_tx_state tx_state;
struct hrtimer trigger_start_tx;
struct hrtimer trigger_stop_tx;
+ unsigned int rxtl;
};
struct imx_port_ucrs {
@@ -1328,6 +1329,7 @@ static void imx_uart_clear_rx_errors(struct imx_port *sport)
#define TXTL_DEFAULT 8
#define RXTL_DEFAULT 8 /* 8 characters or aging timer */
+#define RXTL_CONSOLE_DEFAULT 1
#define TXTL_DMA 8 /* DMA burst setting */
#define RXTL_DMA 9 /* DMA burst setting */
@@ -1445,7 +1447,7 @@ static void imx_uart_disable_dma(struct imx_port *sport)
ucr1 &= ~(UCR1_RXDMAEN | UCR1_TXDMAEN | UCR1_ATDMAEN);
imx_uart_writel(sport, ucr1, UCR1);
- imx_uart_setup_ufcr(sport, TXTL_DEFAULT, RXTL_DEFAULT);
+ imx_uart_setup_ufcr(sport, TXTL_DEFAULT, sport->rxtl);
sport->dma_is_enabled = 0;
}
@@ -1470,7 +1472,12 @@ static int imx_uart_startup(struct uart_port *port)
return retval;
}
- imx_uart_setup_ufcr(sport, TXTL_DEFAULT, RXTL_DEFAULT);
+ if (uart_console(&sport->port))
+ sport->rxtl = RXTL_CONSOLE_DEFAULT;
+ else
+ sport->rxtl = RXTL_DEFAULT;
+
+ imx_uart_setup_ufcr(sport, TXTL_DEFAULT, sport->rxtl);
/* disable the DREN bit (Data Ready interrupt enable) before
* requesting IRQs
@@ -1936,7 +1943,7 @@ static int imx_uart_poll_init(struct uart_port *port)
if (retval)
clk_disable_unprepare(sport->clk_ipg);
- imx_uart_setup_ufcr(sport, TXTL_DEFAULT, RXTL_DEFAULT);
+ imx_uart_setup_ufcr(sport, TXTL_DEFAULT, sport->rxtl);
uart_port_lock_irqsave(&sport->port, &flags);
@@ -2028,7 +2035,7 @@ static int imx_uart_rs485_config(struct uart_port *port, struct ktermios *termio
/* If the receiver trigger is 0, set it to a default value */
ufcr = imx_uart_readl(sport, UFCR);
if ((ufcr & UFCR_RXTL_MASK) == 0)
- imx_uart_setup_ufcr(sport, TXTL_DEFAULT, RXTL_DEFAULT);
+ imx_uart_setup_ufcr(sport, TXTL_DEFAULT, sport->rxtl);
imx_uart_start_rx(port);
}
@@ -2213,7 +2220,7 @@ imx_uart_console_setup(struct console *co, char *options)
else
imx_uart_console_get_options(sport, &baud, &parity, &bits);
- imx_uart_setup_ufcr(sport, TXTL_DEFAULT, RXTL_DEFAULT);
+ imx_uart_setup_ufcr(sport, TXTL_DEFAULT, sport->rxtl);
retval = uart_set_options(&sport->port, co, baud, parity, bits, flow);
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index c7cee5fee603..70676e3247ab 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -954,7 +954,7 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
__func__);
return 0;
}
- dma_sync_sg_for_device(port->dev, priv->sg_tx_p, nent, DMA_TO_DEVICE);
+ dma_sync_sg_for_device(port->dev, priv->sg_tx_p, num, DMA_TO_DEVICE);
priv->desc_tx = desc;
desc->callback = pch_dma_tx_complete;
desc->callback_param = priv;
diff --git a/drivers/tty/serial/serial_base_bus.c b/drivers/tty/serial/serial_base_bus.c
index 5d1677f1b651..cb3b127b06b6 100644
--- a/drivers/tty/serial/serial_base_bus.c
+++ b/drivers/tty/serial/serial_base_bus.c
@@ -72,6 +72,7 @@ static int serial_base_device_init(struct uart_port *port,
dev->parent = parent_dev;
dev->bus = &serial_base_bus_type;
dev->release = release;
+ device_set_of_node_from_dev(dev, parent_dev);
if (!serial_base_initialized) {
dev_dbg(port->dev, "uart_add_one_port() called before arch_initcall()?\n");
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index d94d73e45fb6..440303566b14 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1353,28 +1353,28 @@ static void uart_sanitize_serial_rs485_delays(struct uart_port *port,
if (!port->rs485_supported.delay_rts_before_send) {
if (rs485->delay_rts_before_send) {
dev_warn_ratelimited(port->dev,
- "%s (%d): RTS delay before sending not supported\n",
+ "%s (%u): RTS delay before sending not supported\n",
port->name, port->line);
}
rs485->delay_rts_before_send = 0;
} else if (rs485->delay_rts_before_send > RS485_MAX_RTS_DELAY) {
rs485->delay_rts_before_send = RS485_MAX_RTS_DELAY;
dev_warn_ratelimited(port->dev,
- "%s (%d): RTS delay before sending clamped to %u ms\n",
+ "%s (%u): RTS delay before sending clamped to %u ms\n",
port->name, port->line, rs485->delay_rts_before_send);
}
if (!port->rs485_supported.delay_rts_after_send) {
if (rs485->delay_rts_after_send) {
dev_warn_ratelimited(port->dev,
- "%s (%d): RTS delay after sending not supported\n",
+ "%s (%u): RTS delay after sending not supported\n",
port->name, port->line);
}
rs485->delay_rts_after_send = 0;
} else if (rs485->delay_rts_after_send > RS485_MAX_RTS_DELAY) {
rs485->delay_rts_after_send = RS485_MAX_RTS_DELAY;
dev_warn_ratelimited(port->dev,
- "%s (%d): RTS delay after sending clamped to %u ms\n",
+ "%s (%u): RTS delay after sending clamped to %u ms\n",
port->name, port->line, rs485->delay_rts_after_send);
}
}
@@ -1404,14 +1404,14 @@ static void uart_sanitize_serial_rs485(struct uart_port *port, struct serial_rs4
rs485->flags &= ~SER_RS485_RTS_AFTER_SEND;
dev_warn_ratelimited(port->dev,
- "%s (%d): invalid RTS setting, using RTS_ON_SEND instead\n",
+ "%s (%u): invalid RTS setting, using RTS_ON_SEND instead\n",
port->name, port->line);
} else {
rs485->flags |= SER_RS485_RTS_AFTER_SEND;
rs485->flags &= ~SER_RS485_RTS_ON_SEND;
dev_warn_ratelimited(port->dev,
- "%s (%d): invalid RTS setting, using RTS_AFTER_SEND instead\n",
+ "%s (%u): invalid RTS setting, using RTS_AFTER_SEND instead\n",
port->name, port->line);
}
}
@@ -1850,7 +1850,7 @@ static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
expire = jiffies + timeout;
- pr_debug("uart_wait_until_sent(%d), jiffies=%lu, expire=%lu...\n",
+ pr_debug("uart_wait_until_sent(%u), jiffies=%lu, expire=%lu...\n",
port->line, jiffies, expire);
/*
@@ -2046,7 +2046,7 @@ static void uart_line_info(struct seq_file *m, struct uart_driver *drv, int i)
return;
mmio = uport->iotype >= UPIO_MEM;
- seq_printf(m, "%d: uart:%s %s%08llX irq:%d",
+ seq_printf(m, "%u: uart:%s %s%08llX irq:%u",
uport->line, uart_type(uport),
mmio ? "mmio:0x" : "port:",
mmio ? (unsigned long long)uport->mapbase
@@ -2068,18 +2068,18 @@ static void uart_line_info(struct seq_file *m, struct uart_driver *drv, int i)
if (pm_state != UART_PM_STATE_ON)
uart_change_pm(state, pm_state);
- seq_printf(m, " tx:%d rx:%d",
+ seq_printf(m, " tx:%u rx:%u",
uport->icount.tx, uport->icount.rx);
if (uport->icount.frame)
- seq_printf(m, " fe:%d", uport->icount.frame);
+ seq_printf(m, " fe:%u", uport->icount.frame);
if (uport->icount.parity)
- seq_printf(m, " pe:%d", uport->icount.parity);
+ seq_printf(m, " pe:%u", uport->icount.parity);
if (uport->icount.brk)
- seq_printf(m, " brk:%d", uport->icount.brk);
+ seq_printf(m, " brk:%u", uport->icount.brk);
if (uport->icount.overrun)
- seq_printf(m, " oe:%d", uport->icount.overrun);
+ seq_printf(m, " oe:%u", uport->icount.overrun);
if (uport->icount.buf_overrun)
- seq_printf(m, " bo:%d", uport->icount.buf_overrun);
+ seq_printf(m, " bo:%u", uport->icount.buf_overrun);
#define INFOBIT(bit, str) \
if (uport->mctrl & (bit)) \
@@ -2571,7 +2571,7 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
break;
}
- pr_info("%s%s%s at %s (irq = %d, base_baud = %d) is a %s\n",
+ pr_info("%s%s%s at %s (irq = %u, base_baud = %u) is a %s\n",
port->dev ? dev_name(port->dev) : "",
port->dev ? ": " : "",
port->name,
@@ -2579,7 +2579,7 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
/* The magic multiplier feature is a bit obscure, so report it too. */
if (port->flags & UPF_MAGIC_MULTIPLIER)
- pr_info("%s%s%s extra baud rates supported: %d, %d",
+ pr_info("%s%s%s extra baud rates supported: %u, %u",
port->dev ? dev_name(port->dev) : "",
port->dev ? ": " : "",
port->name,
@@ -2978,7 +2978,7 @@ static ssize_t close_delay_show(struct device *dev,
struct tty_port *port = dev_get_drvdata(dev);
uart_get_info(port, &tmp);
- return sprintf(buf, "%d\n", tmp.close_delay);
+ return sprintf(buf, "%u\n", tmp.close_delay);
}
static ssize_t closing_wait_show(struct device *dev,
@@ -2988,7 +2988,7 @@ static ssize_t closing_wait_show(struct device *dev,
struct tty_port *port = dev_get_drvdata(dev);
uart_get_info(port, &tmp);
- return sprintf(buf, "%d\n", tmp.closing_wait);
+ return sprintf(buf, "%u\n", tmp.closing_wait);
}
static ssize_t custom_divisor_show(struct device *dev,
@@ -3008,7 +3008,7 @@ static ssize_t io_type_show(struct device *dev,
struct tty_port *port = dev_get_drvdata(dev);
uart_get_info(port, &tmp);
- return sprintf(buf, "%d\n", tmp.io_type);
+ return sprintf(buf, "%u\n", tmp.io_type);
}
static ssize_t iomem_base_show(struct device *dev,
@@ -3028,7 +3028,7 @@ static ssize_t iomem_reg_shift_show(struct device *dev,
struct tty_port *port = dev_get_drvdata(dev);
uart_get_info(port, &tmp);
- return sprintf(buf, "%d\n", tmp.iomem_reg_shift);
+ return sprintf(buf, "%u\n", tmp.iomem_reg_shift);
}
static ssize_t console_show(struct device *dev,
@@ -3168,7 +3168,7 @@ static int serial_core_add_one_port(struct uart_driver *drv, struct uart_port *u
state->pm_state = UART_PM_STATE_UNDEFINED;
uart_port_set_cons(uport, drv->cons);
uport->minor = drv->tty_driver->minor_start + uport->line;
- uport->name = kasprintf(GFP_KERNEL, "%s%d", drv->dev_name,
+ uport->name = kasprintf(GFP_KERNEL, "%s%u", drv->dev_name,
drv->tty_driver->name_base + uport->line);
if (!uport->name) {
ret = -ENOMEM;
@@ -3211,7 +3211,7 @@ static int serial_core_add_one_port(struct uart_driver *drv, struct uart_port *u
device_set_wakeup_capable(tty_dev, 1);
} else {
uport->flags |= UPF_DEAD;
- dev_err(uport->dev, "Cannot register tty device on line %d\n",
+ dev_err(uport->dev, "Cannot register tty device on line %u\n",
uport->line);
}
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index aacbed76c7c5..53236e3e4fa4 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -183,6 +183,7 @@ static struct sci_port sci_ports[SCI_NPORTS];
static unsigned long sci_ports_in_use;
static struct uart_driver sci_uart_driver;
static bool sci_uart_earlycon;
+static bool sci_uart_earlycon_dev_probing;
static inline struct sci_port *
to_sci_port(struct uart_port *uart)
@@ -3404,7 +3405,8 @@ static struct plat_sci_port *sci_parse_dt(struct platform_device *pdev,
static int sci_probe_single(struct platform_device *dev,
unsigned int index,
struct plat_sci_port *p,
- struct sci_port *sciport)
+ struct sci_port *sciport,
+ struct resource *sci_res)
{
int ret;
@@ -3451,6 +3453,30 @@ static int sci_probe_single(struct platform_device *dev,
sciport->port.flags |= UPF_HARD_FLOW;
}
+ if (sci_uart_earlycon && sci_ports[0].port.mapbase == sci_res->start) {
+ /*
+ * In case:
+ * - this is the earlycon port (mapped on index 0 in sci_ports[]) and
+ * - it now maps to an alias other than zero and
+ * - the earlycon is still alive (e.g., "earlycon keep_bootcon" is
+ * available in bootargs)
+ *
+ * we need to avoid disabling clocks and PM domains through the runtime
+ * PM APIs called in __device_attach(). For this, increment the runtime
+ * PM reference counter (the clocks and PM domains were already enabled
+ * by the bootloader). Otherwise the earlycon may access the HW when it
+ * has no clocks enabled leading to failures (infinite loop in
+ * sci_poll_put_char()).
+ */
+ pm_runtime_get_noresume(&dev->dev);
+
+ /*
+ * Skip cleanup the sci_port[0] in early_console_exit(), this
+ * port is the same as the earlycon one.
+ */
+ sci_uart_earlycon_dev_probing = true;
+ }
+
return uart_add_one_port(&sci_uart_driver, &sciport->port);
}
@@ -3509,7 +3535,7 @@ static int sci_probe(struct platform_device *dev)
platform_set_drvdata(dev, sp);
- ret = sci_probe_single(dev, dev_id, p, sp);
+ ret = sci_probe_single(dev, dev_id, p, sp, res);
if (ret)
return ret;
@@ -3666,6 +3692,22 @@ sh_early_platform_init_buffer("earlyprintk", &sci_driver,
#ifdef CONFIG_SERIAL_SH_SCI_EARLYCON
static struct plat_sci_port port_cfg;
+static int early_console_exit(struct console *co)
+{
+ struct sci_port *sci_port = &sci_ports[0];
+
+ /*
+ * Clean the slot used by earlycon. A new SCI device might
+ * map to this slot.
+ */
+ if (!sci_uart_earlycon_dev_probing) {
+ memset(sci_port, 0, sizeof(*sci_port));
+ sci_uart_earlycon = false;
+ }
+
+ return 0;
+}
+
static int __init early_console_setup(struct earlycon_device *device,
int type)
{
@@ -3683,6 +3725,8 @@ static int __init early_console_setup(struct earlycon_device *device,
SCSCR_RE | SCSCR_TE | port_cfg.scscr);
device->con->write = serial_console_write;
+ device->con->exit = early_console_exit;
+
return 0;
}
static int __init sci_early_console_setup(struct earlycon_device *device,
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index 68357ac8ffe3..71890f3244a0 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -880,16 +880,6 @@ of_err:
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
- if (!ulite_uart_driver.state) {
- dev_dbg(&pdev->dev, "uartlite: calling uart_register_driver()\n");
- ret = uart_register_driver(&ulite_uart_driver);
- if (ret < 0) {
- dev_err(&pdev->dev, "Failed to register driver\n");
- clk_disable_unprepare(pdata->clk);
- return ret;
- }
- }
-
ret = ulite_assign(&pdev->dev, id, res->start, irq, pdata);
pm_runtime_mark_last_busy(&pdev->dev);
@@ -929,16 +919,25 @@ static struct platform_driver ulite_platform_driver = {
static int __init ulite_init(void)
{
+ int ret;
+
+ pr_debug("uartlite: calling uart_register_driver()\n");
+ ret = uart_register_driver(&ulite_uart_driver);
+ if (ret)
+ return ret;
pr_debug("uartlite: calling platform_driver_register()\n");
- return platform_driver_register(&ulite_platform_driver);
+ ret = platform_driver_register(&ulite_platform_driver);
+ if (ret)
+ uart_unregister_driver(&ulite_uart_driver);
+
+ return ret;
}
static void __exit ulite_exit(void)
{
platform_driver_unregister(&ulite_platform_driver);
- if (ulite_uart_driver.state)
- uart_unregister_driver(&ulite_uart_driver);
+ uart_unregister_driver(&ulite_uart_driver);
}
module_init(ulite_init);
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index be5564ed8c01..5b09ce71345b 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -4566,6 +4566,7 @@ void do_unblank_screen(int leaving_gfx)
set_palette(vc);
set_cursor(vc);
vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num);
+ notify_update(vc);
}
EXPORT_SYMBOL(do_unblank_screen);
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-25 02:39:35 +0300