Merge tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial updates from Greg KH:
"Here is a small set of tty and serial driver updates for 6.11-rc1. Not
much happened this cycle, unlike the previous kernel release which had
lots of "excitement" in this part of the kernel. Included in here are
the following changes:
- dt binding updates for new platforms
- 8250 driver updates
- various small serial driver fixes and updates
- printk/console naming and matching attempt #2 (was reverted for
6.10-final, should be good to go this time around, acked by the
relevant maintainers).
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (22 commits)
Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports
serial: core: Add serial_base_match_and_update_preferred_console()
printk: Add match_devname_and_update_preferred_console()
serial: sc16is7xx: hardware reset chip if reset-gpios is defined in DT
dt-bindings: serial: sc16is7xx: add reset-gpios
dt-bindings: serial: vt8500-uart: convert to json-schema
serial: 8250_platform: Explicitly show we initialise ISA ports only once
tty: add missing MODULE_DESCRIPTION() macros
dt-bindings: serial: mediatek,uart: add MT7988
serial: sh-sci: Add support for RZ/V2H(P) SoC
dt-bindings: serial: Add documentation for Renesas RZ/V2H(P) (R9A09G057) SCIF support
dt-bindings: serial: renesas,scif: Make 'interrupt-names' property as required
dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'
dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end
riscv: dts: starfive: jh7110: Add the core reset and jh7110 compatible for uarts
serial: 8250_dw: Use reset array API to get resets
dt-bindings: serial: snps-dw-apb-uart: Add one more reset signal for StarFive JH7110 SoC
serial: 8250: Extract platform driver
serial: 8250: Extract RSA bits
serial: imx: stop casting struct uart_port to struct imx_port
...
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 2deccf5..6a597e9 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -792,6 +792,25 @@
Documentation/networking/netconsole.rst for an
alternative.
+ <DEVNAME>:<n>.<n>[,options]
+ Use the specified serial port on the serial core bus.
+ The addressing uses DEVNAME of the physical serial port
+ device, followed by the serial core controller instance,
+ and the serial port instance. The options are the same
+ as documented for the ttyS addressing above.
+
+ The mapping of the serial ports to the tty instances
+ can be viewed with:
+
+ $ ls -d /sys/bus/serial-base/devices/*:*.*/tty/*
+ /sys/bus/serial-base/devices/00:04:0.0/tty/ttyS0
+
+ In the above example, the console can be addressed with
+ console=00:04:0.0. Note that a console addressed this
+ way will only get added when the related device driver
+ is ready. The use of an earlycon parameter in addition to
+ the console may be desired for console output early on.
+
uart[8250],io,<addr>[,options]
uart[8250],mmio,<addr>[,options]
uart[8250],mmio16,<addr>[,options]
diff --git a/Documentation/devicetree/bindings/serial/mediatek,uart.yaml b/Documentation/devicetree/bindings/serial/mediatek,uart.yaml
index 303d02ca..ff61ffd 100644
--- a/Documentation/devicetree/bindings/serial/mediatek,uart.yaml
+++ b/Documentation/devicetree/bindings/serial/mediatek,uart.yaml
@@ -37,6 +37,7 @@
- mediatek,mt7623-uart
- mediatek,mt7629-uart
- mediatek,mt7986-uart
+ - mediatek,mt7988-uart
- mediatek,mt8127-uart
- mediatek,mt8135-uart
- mediatek,mt8173-uart
diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml
index 5dec15b..8887148 100644
--- a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml
+++ b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml
@@ -28,6 +28,9 @@
clocks:
maxItems: 1
+ reset-gpios:
+ maxItems: 1
+
clock-frequency:
description:
When there is no clock provider visible to the platform, this
@@ -91,6 +94,7 @@
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
@@ -120,6 +124,7 @@
compatible = "nxp,sc16is752";
reg = <0x54>;
clocks = <&clk20m>;
+ reset-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>;
interrupt-parent = <&gpio3>;
interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
nxp,modem-control-line-ports = <0 1>; /* Ports 0 and 1 as modem control lines */
diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index f3a3eb2..afc7c05 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -9,9 +9,6 @@
maintainers:
- Geert Uytterhoeven <geert+renesas@glider.be>
-allOf:
- - $ref: serial.yaml#
-
properties:
compatible:
oneOf:
@@ -83,6 +80,8 @@
- renesas,scif-r9a08g045 # RZ/G3S
- const: renesas,scif-r9a07g044 # RZ/G2{L,LC} fallback
+ - const: renesas,scif-r9a09g057 # RZ/V2H(P)
+
reg:
maxItems: 1
@@ -95,28 +94,25 @@
- description: Receive buffer full interrupt
- description: Transmit buffer empty interrupt
- description: Break interrupt
- - items:
- - description: Error interrupt
- - description: Receive buffer full interrupt
- - description: Transmit buffer empty interrupt
- - description: Break interrupt
- description: Data Ready interrupt
- description: Transmit End interrupt
+ - description: Transmit End/Data Ready interrupt
+ - description: Receive buffer full interrupt (EDGE trigger)
+ - description: Transmit buffer empty interrupt (EDGE trigger)
+ minItems: 4
interrupt-names:
- oneOf:
- - items:
- - const: eri
- - const: rxi
- - const: txi
- - const: bri
- - items:
- - const: eri
- - const: rxi
- - const: txi
- - const: bri
- - const: dri
- - const: tei
+ minItems: 4
+ items:
+ - const: eri
+ - const: rxi
+ - const: txi
+ - const: bri
+ - const: dri
+ - const: tei
+ - const: tei-dri
+ - const: rxi-edge
+ - const: txi-edge
clocks:
minItems: 1
@@ -161,18 +157,92 @@
- clock-names
- power-domains
-if:
- properties:
- compatible:
- contains:
- enum:
- - renesas,rcar-gen2-scif
- - renesas,rcar-gen3-scif
- - renesas,rcar-gen4-scif
- - renesas,scif-r9a07g044
-then:
- required:
- - resets
+allOf:
+ - $ref: serial.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen2-scif
+ - renesas,rcar-gen3-scif
+ - renesas,rcar-gen4-scif
+ - renesas,scif-r9a07g044
+ - renesas,scif-r9a09g057
+ then:
+ required:
+ - resets
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen1-scif
+ - renesas,rcar-gen2-scif
+ - renesas,rcar-gen3-scif
+ - renesas,rcar-gen4-scif
+ then:
+ properties:
+ interrupts:
+ maxItems: 1
+
+ interrupt-names: false
+ else:
+ required:
+ - interrupt-names
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,scif-r7s72100
+ then:
+ properties:
+ interrupts:
+ minItems: 4
+ maxItems: 4
+
+ interrupt-names:
+ maxItems: 4
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,scif-r7s9210
+ - renesas,scif-r9a07g044
+ then:
+ properties:
+ interrupts:
+ minItems: 6
+ maxItems: 6
+
+ interrupt-names:
+ minItems: 6
+ maxItems: 6
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,scif-r9a09g057
+ then:
+ properties:
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ maxItems: 1
+
+ interrupts:
+ minItems: 9
+
+ interrupt-names:
+ minItems: 9
unevaluatedProperties: false
diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
index 1001d2a..4cdb0dc 100644
--- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
@@ -13,6 +13,20 @@
- $ref: serial.yaml#
- $ref: rs485.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: starfive,jh7110-uart
+ then:
+ properties:
+ resets:
+ minItems: 2
+ else:
+ properties:
+ resets:
+ maxItems: 1
+
properties:
compatible:
oneOf:
@@ -48,6 +62,7 @@
- enum:
- starfive,jh7100-hsuart
- starfive,jh7100-uart
+ - starfive,jh7110-uart
- const: snps,dw-apb-uart
- const: snps,dw-apb-uart
@@ -82,7 +97,8 @@
type: boolean
resets:
- maxItems: 1
+ minItems: 1
+ maxItems: 2
reg-shift: true
diff --git a/Documentation/devicetree/bindings/serial/via,vt8500-uart.yaml b/Documentation/devicetree/bindings/serial/via,vt8500-uart.yaml
new file mode 100644
index 0000000..9c68192
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/via,vt8500-uart.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/via,vt8500-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: VIA VT8500 and WonderMedia WM8xxx UART Controller
+
+maintainers:
+ - Alexey Charkov <alchark@gmail.com>
+
+allOf:
+ - $ref: serial.yaml
+
+properties:
+ compatible:
+ enum:
+ - via,vt8500-uart # up to WM8850/WM8950
+ - wm,wm8880-uart # for WM8880 and later
+
+ clocks:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - clocks
+ - interrupts
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ serial@d8200000 {
+ compatible = "via,vt8500-uart";
+ reg = <0xd8200000 0x1040>;
+ interrupts = <32>;
+ clocks = <&clkuart0>;
+ };
diff --git a/Documentation/devicetree/bindings/serial/vt8500-uart.txt b/Documentation/devicetree/bindings/serial/vt8500-uart.txt
deleted file mode 100644
index 2b64e610..0000000
--- a/Documentation/devicetree/bindings/serial/vt8500-uart.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-* VIA VT8500 and WonderMedia WM8xxx UART Controller
-
-Required properties:
-- compatible: should be "via,vt8500-uart" (for VIA/WonderMedia chips up to and
- including WM8850/WM8950), or "wm,wm8880-uart" (for WM8880 and later)
-
-- reg: base physical address of the controller and length of memory mapped
- region.
-
-- interrupts: hardware interrupt number
-
-- clocks: shall be the input parent clock phandle for the clock. This should
- be the 24Mhz reference clock.
-
-Aliases may be defined to ensure the correct ordering of the uarts.
-
-Example:
- aliases {
- serial0 = &uart0;
- };
-
- uart0: serial@d8200000 {
- compatible = "via,vt8500-uart";
- reg = <0xd8200000 0x1040>;
- interrupts = <32>;
- clocks = <&clkuart0>;
- };
diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
index 5ac7075..0d83393 100644
--- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
@@ -387,12 +387,13 @@ plic: interrupt-controller@c000000 {
};
uart0: serial@10000000 {
- compatible = "snps,dw-apb-uart";
+ compatible = "starfive,jh7110-uart", "snps,dw-apb-uart";
reg = <0x0 0x10000000 0x0 0x10000>;
clocks = <&syscrg JH7110_SYSCLK_UART0_CORE>,
<&syscrg JH7110_SYSCLK_UART0_APB>;
clock-names = "baudclk", "apb_pclk";
- resets = <&syscrg JH7110_SYSRST_UART0_APB>;
+ resets = <&syscrg JH7110_SYSRST_UART0_APB>,
+ <&syscrg JH7110_SYSRST_UART0_CORE>;
interrupts = <32>;
reg-io-width = <4>;
reg-shift = <2>;
@@ -400,12 +401,13 @@ uart0: serial@10000000 {
};
uart1: serial@10010000 {
- compatible = "snps,dw-apb-uart";
+ compatible = "starfive,jh7110-uart", "snps,dw-apb-uart";
reg = <0x0 0x10010000 0x0 0x10000>;
clocks = <&syscrg JH7110_SYSCLK_UART1_CORE>,
<&syscrg JH7110_SYSCLK_UART1_APB>;
clock-names = "baudclk", "apb_pclk";
- resets = <&syscrg JH7110_SYSRST_UART1_APB>;
+ resets = <&syscrg JH7110_SYSRST_UART1_APB>,
+ <&syscrg JH7110_SYSRST_UART1_CORE>;
interrupts = <33>;
reg-io-width = <4>;
reg-shift = <2>;
@@ -413,12 +415,13 @@ uart1: serial@10010000 {
};
uart2: serial@10020000 {
- compatible = "snps,dw-apb-uart";
+ compatible = "starfive,jh7110-uart", "snps,dw-apb-uart";
reg = <0x0 0x10020000 0x0 0x10000>;
clocks = <&syscrg JH7110_SYSCLK_UART2_CORE>,
<&syscrg JH7110_SYSCLK_UART2_APB>;
clock-names = "baudclk", "apb_pclk";
- resets = <&syscrg JH7110_SYSRST_UART2_APB>;
+ resets = <&syscrg JH7110_SYSRST_UART2_APB>,
+ <&syscrg JH7110_SYSRST_UART2_CORE>;
interrupts = <34>;
reg-io-width = <4>;
reg-shift = <2>;
@@ -642,12 +645,13 @@ stg_syscon: syscon@10240000 {
};
uart3: serial@12000000 {
- compatible = "snps,dw-apb-uart";
+ compatible = "starfive,jh7110-uart", "snps,dw-apb-uart";
reg = <0x0 0x12000000 0x0 0x10000>;
clocks = <&syscrg JH7110_SYSCLK_UART3_CORE>,
<&syscrg JH7110_SYSCLK_UART3_APB>;
clock-names = "baudclk", "apb_pclk";
- resets = <&syscrg JH7110_SYSRST_UART3_APB>;
+ resets = <&syscrg JH7110_SYSRST_UART3_APB>,
+ <&syscrg JH7110_SYSRST_UART3_CORE>;
interrupts = <45>;
reg-io-width = <4>;
reg-shift = <2>;
@@ -655,12 +659,13 @@ uart3: serial@12000000 {
};
uart4: serial@12010000 {
- compatible = "snps,dw-apb-uart";
+ compatible = "starfive,jh7110-uart", "snps,dw-apb-uart";
reg = <0x0 0x12010000 0x0 0x10000>;
clocks = <&syscrg JH7110_SYSCLK_UART4_CORE>,
<&syscrg JH7110_SYSCLK_UART4_APB>;
clock-names = "baudclk", "apb_pclk";
- resets = <&syscrg JH7110_SYSRST_UART4_APB>;
+ resets = <&syscrg JH7110_SYSRST_UART4_APB>,
+ <&syscrg JH7110_SYSRST_UART4_CORE>;
interrupts = <46>;
reg-io-width = <4>;
reg-shift = <2>;
@@ -668,12 +673,13 @@ uart4: serial@12010000 {
};
uart5: serial@12020000 {
- compatible = "snps,dw-apb-uart";
+ compatible = "starfive,jh7110-uart", "snps,dw-apb-uart";
reg = <0x0 0x12020000 0x0 0x10000>;
clocks = <&syscrg JH7110_SYSCLK_UART5_CORE>,
<&syscrg JH7110_SYSCLK_UART5_APB>;
clock-names = "baudclk", "apb_pclk";
- resets = <&syscrg JH7110_SYSRST_UART5_APB>;
+ resets = <&syscrg JH7110_SYSRST_UART5_APB>,
+ <&syscrg JH7110_SYSRST_UART5_CORE>;
interrupts = <47>;
reg-io-width = <4>;
reg-shift = <2>;
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 8c964da..3716428 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1660,5 +1660,6 @@ console_initcall(amiserial_console_init);
#endif /* CONFIG_SERIAL_CONSOLE && !MODULE */
+MODULE_DESCRIPTION("Serial driver for the amiga builtin port");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:amiga-serial");
diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
index 34421ec..c60745f8 100644
--- a/drivers/tty/goldfish.c
+++ b/drivers/tty/goldfish.c
@@ -470,4 +470,5 @@ static struct platform_driver goldfish_tty_platform_driver = {
module_platform_driver(goldfish_tty_platform_driver);
+MODULE_DESCRIPTION("Goldfish TTY Driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index be35f73..5d37a09 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -4634,5 +4634,6 @@ module_init(gsm_init);
module_exit(gsm_exit);
+MODULE_DESCRIPTION("GSM 0710 tty multiplexor");
MODULE_LICENSE("GPL");
MODULE_ALIAS_LDISC(N_GSM0710);
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index 1615f07..4a4dc58 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -822,6 +822,7 @@ static void __exit n_hdlc_exit(void)
module_init(n_hdlc_init);
module_exit(n_hdlc_exit);
+MODULE_DESCRIPTION("HDLC line discipline support");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Paul Fulghum paulkf@microgate.com");
module_param(maxframe, int, 0);
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 6a7b286..e5310c6 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -9,7 +9,7 @@
#include <linux/bits.h>
#include <linux/serial_8250.h>
-#include <linux/serial_reg.h>
+#include <linux/serial_core.h>
#include <linux/dmaengine.h>
#include "../serial_mctrl_gpio.h"
@@ -93,6 +93,10 @@ struct serial8250_config {
#define UART_BUG_THRE BIT(3) /* UART has buggy THRE reassertion */
#define UART_BUG_TXRACE BIT(5) /* UART Tx fails to set remote DR */
+/* Module parameters */
+#define UART_NR CONFIG_SERIAL_8250_NR_UARTS
+
+extern unsigned int nr_uarts;
#ifdef CONFIG_SERIAL_8250_SHARE_IRQ
#define SERIAL8250_SHARE_IRQS 1
@@ -100,6 +104,9 @@ struct serial8250_config {
#define SERIAL8250_SHARE_IRQS 0
#endif
+extern unsigned int share_irqs;
+extern unsigned int skip_txen_test;
+
#define SERIAL8250_PORT_FLAGS(_base, _irq, _flags) \
{ \
.iobase = _base, \
@@ -111,6 +118,19 @@ struct serial8250_config {
#define SERIAL8250_PORT(_base, _irq) SERIAL8250_PORT_FLAGS(_base, _irq, 0)
+extern struct uart_driver serial8250_reg;
+void serial8250_register_ports(struct uart_driver *drv, struct device *dev);
+
+/* Legacy ISA bus related APIs */
+typedef void (*serial8250_isa_config_fn)(int, struct uart_port *, u32 *);
+extern serial8250_isa_config_fn serial8250_isa_config;
+
+void serial8250_isa_init_ports(void);
+
+extern struct platform_device *serial8250_isa_devs;
+
+extern const struct uart_ops *univ8250_port_base_ops;
+extern struct uart_ops univ8250_port_ops;
static inline int serial_in(struct uart_8250_port *up, int offset)
{
@@ -200,6 +220,7 @@ static inline bool serial8250_clear_THRI(struct uart_8250_port *up)
return true;
}
+struct uart_8250_port *serial8250_setup_port(int index);
struct uart_8250_port *serial8250_get_port(int line);
void serial8250_rpm_get(struct uart_8250_port *p);
@@ -301,6 +322,12 @@ static inline int serial8250_pnp_init(void) { return 0; }
static inline void serial8250_pnp_exit(void) { }
#endif
+#ifdef CONFIG_SERIAL_8250_RSA
+void univ8250_rsa_support(struct uart_ops *ops);
+#else
+static inline void univ8250_rsa_support(struct uart_ops *ops) { }
+#endif
+
#ifdef CONFIG_SERIAL_8250_FINTEK
int fintek_8250_probe(struct uart_8250_port *uart);
#else
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index b0adafc..29e4b83 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -6,11 +6,9 @@
*
* Copyright (C) 2001 Russell King.
*
- * Supports: ISA-compatible 8250/16550 ports
- * PNP 8250/16550 ports
+ * Supports:
* early_serial_setup() ports
* userspace-configurable "phantom" ports
- * "serial8250" platform devices
* serial8250_register_8250_port() ports
*/
@@ -35,52 +33,13 @@
#include <linux/string_helpers.h>
#include <linux/uaccess.h>
#include <linux/io.h>
-#ifdef CONFIG_SPARC
-#include <linux/sunserialcore.h>
-#endif
#include <asm/irq.h>
#include "8250.h"
-/*
- * Configuration:
- * share_irqs - whether we pass IRQF_SHARED to request_irq(). This option
- * is unsafe when used on edge-triggered interrupts.
- */
-static unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
-
-static unsigned int nr_uarts = CONFIG_SERIAL_8250_RUNTIME_UARTS;
-
-static struct uart_driver serial8250_reg;
-
-static unsigned int skip_txen_test; /* force skip of txen test at init time */
-
#define PASS_LIMIT 512
-#include <asm/serial.h>
-/*
- * SERIAL_PORT_DFNS tells us about built-in ports that have no
- * standard enumeration mechanism. Platforms that can find all
- * serial ports via mechanisms like ACPI or PCI need not supply it.
- */
-#ifndef SERIAL_PORT_DFNS
-#define SERIAL_PORT_DFNS
-#endif
-
-static const struct old_serial_port old_serial_port[] = {
- SERIAL_PORT_DFNS /* defined in asm/serial.h */
-};
-
-#define UART_NR CONFIG_SERIAL_8250_NR_UARTS
-
-#ifdef CONFIG_SERIAL_8250_RSA
-
-#define PORT_RSA_MAX 4
-static unsigned long probe_rsa[PORT_RSA_MAX];
-static unsigned int probe_rsa_count;
-#endif /* CONFIG_SERIAL_8250_RSA */
-
struct irq_info {
struct hlist_node node;
int irq;
@@ -345,45 +304,8 @@ static void univ8250_release_irq(struct uart_8250_port *up)
serial_unlink_irq_chain(up);
}
-#ifdef CONFIG_SERIAL_8250_RSA
-static int serial8250_request_rsa_resource(struct uart_8250_port *up)
-{
- unsigned long start = UART_RSA_BASE << up->port.regshift;
- unsigned int size = 8 << up->port.regshift;
- struct uart_port *port = &up->port;
- int ret = -EINVAL;
-
- switch (port->iotype) {
- case UPIO_HUB6:
- case UPIO_PORT:
- start += port->iobase;
- if (request_region(start, size, "serial-rsa"))
- ret = 0;
- else
- ret = -EBUSY;
- break;
- }
-
- return ret;
-}
-
-static void serial8250_release_rsa_resource(struct uart_8250_port *up)
-{
- unsigned long offset = UART_RSA_BASE << up->port.regshift;
- unsigned int size = 8 << up->port.regshift;
- struct uart_port *port = &up->port;
-
- switch (port->iotype) {
- case UPIO_HUB6:
- case UPIO_PORT:
- release_region(port->iobase + offset, size);
- break;
- }
-}
-#endif
-
-static const struct uart_ops *base_ops;
-static struct uart_ops univ8250_port_ops;
+const struct uart_ops *univ8250_port_base_ops = NULL;
+struct uart_ops univ8250_port_ops;
static const struct uart_8250_ops univ8250_driver_ops = {
.setup_irq = univ8250_setup_irq,
@@ -411,85 +333,12 @@ struct uart_8250_port *serial8250_get_port(int line)
}
EXPORT_SYMBOL_GPL(serial8250_get_port);
-static void (*serial8250_isa_config)(int port, struct uart_port *up,
- u32 *capabilities);
-
-void serial8250_set_isa_configurator(
- void (*v)(int port, struct uart_port *up, u32 *capabilities))
-{
- serial8250_isa_config = v;
-}
-EXPORT_SYMBOL(serial8250_set_isa_configurator);
-
-#ifdef CONFIG_SERIAL_8250_RSA
-
-static void univ8250_config_port(struct uart_port *port, int flags)
-{
- struct uart_8250_port *up = up_to_u8250p(port);
-
- up->probe &= ~UART_PROBE_RSA;
- if (port->type == PORT_RSA) {
- if (serial8250_request_rsa_resource(up) == 0)
- up->probe |= UART_PROBE_RSA;
- } else if (flags & UART_CONFIG_TYPE) {
- int i;
-
- for (i = 0; i < probe_rsa_count; i++) {
- if (probe_rsa[i] == up->port.iobase) {
- if (serial8250_request_rsa_resource(up) == 0)
- up->probe |= UART_PROBE_RSA;
- break;
- }
- }
- }
-
- base_ops->config_port(port, flags);
-
- if (port->type != PORT_RSA && up->probe & UART_PROBE_RSA)
- serial8250_release_rsa_resource(up);
-}
-
-static int univ8250_request_port(struct uart_port *port)
-{
- struct uart_8250_port *up = up_to_u8250p(port);
- int ret;
-
- ret = base_ops->request_port(port);
- if (ret == 0 && port->type == PORT_RSA) {
- ret = serial8250_request_rsa_resource(up);
- if (ret < 0)
- base_ops->release_port(port);
- }
-
- return ret;
-}
-
-static void univ8250_release_port(struct uart_port *port)
-{
- struct uart_8250_port *up = up_to_u8250p(port);
-
- if (port->type == PORT_RSA)
- serial8250_release_rsa_resource(up);
- base_ops->release_port(port);
-}
-
-static void univ8250_rsa_support(struct uart_ops *ops)
-{
- ops->config_port = univ8250_config_port;
- ops->request_port = univ8250_request_port;
- ops->release_port = univ8250_release_port;
-}
-
-#else
-#define univ8250_rsa_support(x) do { } while (0)
-#endif /* CONFIG_SERIAL_8250_RSA */
-
static inline void serial8250_apply_quirks(struct uart_8250_port *up)
{
up->port.quirks |= skip_txen_test ? UPQ_NO_TXEN_TEST : 0;
}
-static struct uart_8250_port *serial8250_setup_port(int index)
+struct uart_8250_port *serial8250_setup_port(int index)
{
struct uart_8250_port *up;
@@ -501,8 +350,8 @@ static struct uart_8250_port *serial8250_setup_port(int index)
up->port.port_id = index;
serial8250_init_port(up);
- if (!base_ops)
- base_ops = up->port.ops;
+ if (!univ8250_port_base_ops)
+ univ8250_port_base_ops = up->port.ops;
up->port.ops = &univ8250_port_ops;
timer_setup(&up->timer, serial8250_timeout, 0);
@@ -514,57 +363,7 @@ static struct uart_8250_port *serial8250_setup_port(int index)
return up;
}
-static void __init serial8250_isa_init_ports(void)
-{
- struct uart_8250_port *up;
- static int first = 1;
- int i, irqflag = 0;
-
- if (!first)
- return;
- first = 0;
-
- if (nr_uarts > UART_NR)
- nr_uarts = UART_NR;
-
- /*
- * Set up initial isa ports based on nr_uart module param, or else
- * default to CONFIG_SERIAL_8250_RUNTIME_UARTS. Note that we do not
- * need to increase nr_uarts when setting up the initial isa ports.
- */
- for (i = 0; i < nr_uarts; i++)
- serial8250_setup_port(i);
-
- /* chain base port ops to support Remote Supervisor Adapter */
- univ8250_port_ops = *base_ops;
- univ8250_rsa_support(&univ8250_port_ops);
-
- if (share_irqs)
- irqflag = IRQF_SHARED;
-
- for (i = 0, up = serial8250_ports;
- i < ARRAY_SIZE(old_serial_port) && i < nr_uarts;
- i++, up++) {
- struct uart_port *port = &up->port;
-
- port->iobase = old_serial_port[i].port;
- port->irq = irq_canonicalize(old_serial_port[i].irq);
- port->irqflags = 0;
- port->uartclk = old_serial_port[i].baud_base * 16;
- port->flags = old_serial_port[i].flags;
- port->hub6 = 0;
- port->membase = old_serial_port[i].iomem_base;
- port->iotype = old_serial_port[i].io_type;
- port->regshift = old_serial_port[i].iomem_reg_shift;
-
- port->irqflags |= irqflag;
- if (serial8250_isa_config != NULL)
- serial8250_isa_config(i, &up->port, &up->capabilities);
- }
-}
-
-static void __init
-serial8250_register_ports(struct uart_driver *drv, struct device *dev)
+void __init serial8250_register_ports(struct uart_driver *drv, struct device *dev)
{
int i;
@@ -721,7 +520,7 @@ console_initcall(univ8250_console_init);
#define SERIAL8250_CONSOLE NULL
#endif
-static struct uart_driver serial8250_reg = {
+struct uart_driver serial8250_reg = {
.owner = THIS_MODULE,
.driver_name = "serial",
.dev_name = "ttyS",
@@ -823,120 +622,6 @@ void serial8250_resume_port(int line)
EXPORT_SYMBOL(serial8250_resume_port);
/*
- * Register a set of serial devices attached to a platform device. The
- * list is terminated with a zero flags entry, which means we expect
- * all entries to have at least UPF_BOOT_AUTOCONF set.
- */
-static int serial8250_probe(struct platform_device *dev)
-{
- struct plat_serial8250_port *p = dev_get_platdata(&dev->dev);
- struct uart_8250_port uart;
- int ret, i, irqflag = 0;
-
- memset(&uart, 0, sizeof(uart));
-
- if (share_irqs)
- irqflag = IRQF_SHARED;
-
- for (i = 0; p && p->flags != 0; p++, i++) {
- uart.port.iobase = p->iobase;
- uart.port.membase = p->membase;
- uart.port.irq = p->irq;
- uart.port.irqflags = p->irqflags;
- uart.port.uartclk = p->uartclk;
- uart.port.regshift = p->regshift;
- uart.port.iotype = p->iotype;
- uart.port.flags = p->flags;
- uart.port.mapbase = p->mapbase;
- uart.port.mapsize = p->mapsize;
- uart.port.hub6 = p->hub6;
- uart.port.has_sysrq = p->has_sysrq;
- uart.port.private_data = p->private_data;
- uart.port.type = p->type;
- uart.bugs = p->bugs;
- uart.port.serial_in = p->serial_in;
- uart.port.serial_out = p->serial_out;
- uart.dl_read = p->dl_read;
- uart.dl_write = p->dl_write;
- uart.port.handle_irq = p->handle_irq;
- uart.port.handle_break = p->handle_break;
- uart.port.set_termios = p->set_termios;
- uart.port.set_ldisc = p->set_ldisc;
- uart.port.get_mctrl = p->get_mctrl;
- uart.port.pm = p->pm;
- uart.port.dev = &dev->dev;
- uart.port.irqflags |= irqflag;
- ret = serial8250_register_8250_port(&uart);
- if (ret < 0) {
- dev_err(&dev->dev, "unable to register port at index %d "
- "(IO%lx MEM%llx IRQ%d): %d\n", i,
- p->iobase, (unsigned long long)p->mapbase,
- p->irq, ret);
- }
- }
- return 0;
-}
-
-/*
- * Remove serial ports registered against a platform device.
- */
-static void serial8250_remove(struct platform_device *dev)
-{
- int i;
-
- for (i = 0; i < nr_uarts; i++) {
- struct uart_8250_port *up = &serial8250_ports[i];
-
- if (up->port.dev == &dev->dev)
- serial8250_unregister_port(i);
- }
-}
-
-static int serial8250_suspend(struct platform_device *dev, pm_message_t state)
-{
- int i;
-
- for (i = 0; i < UART_NR; i++) {
- struct uart_8250_port *up = &serial8250_ports[i];
-
- if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
- uart_suspend_port(&serial8250_reg, &up->port);
- }
-
- return 0;
-}
-
-static int serial8250_resume(struct platform_device *dev)
-{
- int i;
-
- for (i = 0; i < UART_NR; i++) {
- struct uart_8250_port *up = &serial8250_ports[i];
-
- if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
- serial8250_resume_port(i);
- }
-
- return 0;
-}
-
-static struct platform_driver serial8250_isa_driver = {
- .probe = serial8250_probe,
- .remove_new = serial8250_remove,
- .suspend = serial8250_suspend,
- .resume = serial8250_resume,
- .driver = {
- .name = "serial8250",
- },
-};
-
-/*
- * This "device" covers _all_ ISA 8250-compatible serial devices listed
- * in the table in include/asm/serial.h
- */
-static struct platform_device *serial8250_isa_devs;
-
-/*
* serial8250_register_8250_port and serial8250_unregister_port allows for
* 16x50 serial ports to be configured at run-time, to support PCMCIA
* modems and PCI multiport cards.
@@ -1212,134 +897,5 @@ void serial8250_unregister_port(int line)
}
EXPORT_SYMBOL(serial8250_unregister_port);
-static int __init serial8250_init(void)
-{
- int ret;
-
- if (nr_uarts == 0)
- return -ENODEV;
-
- serial8250_isa_init_ports();
-
- pr_info("Serial: 8250/16550 driver, %d ports, IRQ sharing %s\n",
- nr_uarts, str_enabled_disabled(share_irqs));
-
-#ifdef CONFIG_SPARC
- ret = sunserial_register_minors(&serial8250_reg, UART_NR);
-#else
- serial8250_reg.nr = UART_NR;
- ret = uart_register_driver(&serial8250_reg);
-#endif
- if (ret)
- goto out;
-
- ret = serial8250_pnp_init();
- if (ret)
- goto unreg_uart_drv;
-
- serial8250_isa_devs = platform_device_alloc("serial8250",
- PLAT8250_DEV_LEGACY);
- if (!serial8250_isa_devs) {
- ret = -ENOMEM;
- goto unreg_pnp;
- }
-
- ret = platform_device_add(serial8250_isa_devs);
- if (ret)
- goto put_dev;
-
- serial8250_register_ports(&serial8250_reg, &serial8250_isa_devs->dev);
-
- ret = platform_driver_register(&serial8250_isa_driver);
- if (ret == 0)
- goto out;
-
- platform_device_del(serial8250_isa_devs);
-put_dev:
- platform_device_put(serial8250_isa_devs);
-unreg_pnp:
- serial8250_pnp_exit();
-unreg_uart_drv:
-#ifdef CONFIG_SPARC
- sunserial_unregister_minors(&serial8250_reg, UART_NR);
-#else
- uart_unregister_driver(&serial8250_reg);
-#endif
-out:
- return ret;
-}
-
-static void __exit serial8250_exit(void)
-{
- struct platform_device *isa_dev = serial8250_isa_devs;
-
- /*
- * This tells serial8250_unregister_port() not to re-register
- * the ports (thereby making serial8250_isa_driver permanently
- * in use.)
- */
- serial8250_isa_devs = NULL;
-
- platform_driver_unregister(&serial8250_isa_driver);
- platform_device_unregister(isa_dev);
-
- serial8250_pnp_exit();
-
-#ifdef CONFIG_SPARC
- sunserial_unregister_minors(&serial8250_reg, UART_NR);
-#else
- uart_unregister_driver(&serial8250_reg);
-#endif
-}
-
-module_init(serial8250_init);
-module_exit(serial8250_exit);
-
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Generic 8250/16x50 serial driver");
-
-module_param_hw(share_irqs, uint, other, 0644);
-MODULE_PARM_DESC(share_irqs, "Share IRQs with other non-8250/16x50 devices (unsafe)");
-
-module_param(nr_uarts, uint, 0644);
-MODULE_PARM_DESC(nr_uarts, "Maximum number of UARTs supported. (1-" __MODULE_STRING(CONFIG_SERIAL_8250_NR_UARTS) ")");
-
-module_param(skip_txen_test, uint, 0644);
-MODULE_PARM_DESC(skip_txen_test, "Skip checking for the TXEN bug at init time");
-
-#ifdef CONFIG_SERIAL_8250_RSA
-module_param_hw_array(probe_rsa, ulong, ioport, &probe_rsa_count, 0444);
-MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA");
-#endif
-MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR);
-
-#ifdef CONFIG_SERIAL_8250_DEPRECATED_OPTIONS
-#ifndef MODULE
-/* This module was renamed to 8250_core in 3.7. Keep the old "8250" name
- * working as well for the module options so we don't break people. We
- * need to keep the names identical and the convenient macros will happily
- * refuse to let us do that by failing the build with redefinition errors
- * of global variables. So we stick them inside a dummy function to avoid
- * those conflicts. The options still get parsed, and the redefined
- * MODULE_PARAM_PREFIX lets us keep the "8250." syntax alive.
- *
- * This is hacky. I'm sorry.
- */
-static void __used s8250_options(void)
-{
-#undef MODULE_PARAM_PREFIX
-#define MODULE_PARAM_PREFIX "8250_core."
-
- module_param_cb(share_irqs, ¶m_ops_uint, &share_irqs, 0644);
- module_param_cb(nr_uarts, ¶m_ops_uint, &nr_uarts, 0644);
- module_param_cb(skip_txen_test, ¶m_ops_uint, &skip_txen_test, 0644);
-#ifdef CONFIG_SERIAL_8250_RSA
- __module_param_call(MODULE_PARAM_PREFIX, probe_rsa,
- ¶m_array_ops, .arr = &__param_arr_probe_rsa,
- 0444, -1, 0);
-#endif
-}
-#else
-MODULE_ALIAS("8250_core");
-#endif
-#endif
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index fb809e32..ab9e7f2 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -616,7 +616,7 @@ static int dw8250_probe(struct platform_device *pdev)
if (IS_ERR(data->pclk))
return PTR_ERR(data->pclk);
- data->rst = devm_reset_control_get_optional_exclusive(dev, NULL);
+ data->rst = devm_reset_control_array_get_optional_exclusive(dev);
if (IS_ERR(data->rst))
return PTR_ERR(data->rst);
diff --git a/drivers/tty/serial/8250/8250_parisc.c b/drivers/tty/serial/8250/8250_parisc.c
index 948d0a1..4ba05a9 100644
--- a/drivers/tty/serial/8250/8250_parisc.c
+++ b/drivers/tty/serial/8250/8250_parisc.c
@@ -127,4 +127,5 @@ static int __init probe_serial_gsc(void)
module_init(probe_serial_gsc);
+MODULE_DESCRIPTION("Serial Device Initialisation for Lasi/Asp/Wax/Dino");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/8250/8250_pcilib.c b/drivers/tty/serial/8250/8250_pcilib.c
index d234e91..ea906d7 100644
--- a/drivers/tty/serial/8250/8250_pcilib.c
+++ b/drivers/tty/serial/8250/8250_pcilib.c
@@ -37,4 +37,5 @@ int serial8250_pci_setup_port(struct pci_dev *dev, struct uart_8250_port *port,
return 0;
}
EXPORT_SYMBOL_NS_GPL(serial8250_pci_setup_port, SERIAL_8250_PCI);
+MODULE_DESCRIPTION("8250 PCI library");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/8250/8250_platform.c b/drivers/tty/serial/8250/8250_platform.c
new file mode 100644
index 0000000..d5c8d85
--- /dev/null
+++ b/drivers/tty/serial/8250/8250_platform.c
@@ -0,0 +1,337 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Universal/legacy platform driver for 8250/16550-type serial ports
+ *
+ * Supports: ISA-compatible 8250/16550 ports
+ * PNP 8250/16550 ports
+ * "serial8250" platform devices
+ */
+#include <linux/array_size.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/once.h>
+#include <linux/platform_device.h>
+
+#include <linux/serial_8250.h>
+
+#ifdef CONFIG_SPARC
+#include <linux/sunserialcore.h>
+#endif
+
+#include "8250.h"
+
+/*
+ * Configuration:
+ * share_irqs Whether we pass IRQF_SHARED to request_irq().
+ * This option is unsafe when used on edge-triggered interrupts.
+ * skip_txen_test Force skip of txen test at init time.
+ */
+unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
+unsigned int skip_txen_test;
+
+unsigned int nr_uarts = CONFIG_SERIAL_8250_RUNTIME_UARTS;
+
+#include <asm/serial.h>
+
+/*
+ * SERIAL_PORT_DFNS tells us about built-in ports that have no
+ * standard enumeration mechanism. Platforms that can find all
+ * serial ports via mechanisms like ACPI or PCI need not supply it.
+ */
+#ifndef SERIAL_PORT_DFNS
+#define SERIAL_PORT_DFNS
+#endif
+
+static const struct old_serial_port old_serial_port[] = {
+ SERIAL_PORT_DFNS /* defined in asm/serial.h */
+};
+
+serial8250_isa_config_fn serial8250_isa_config;
+void serial8250_set_isa_configurator(serial8250_isa_config_fn v)
+{
+ serial8250_isa_config = v;
+}
+EXPORT_SYMBOL(serial8250_set_isa_configurator);
+
+static void __init __serial8250_isa_init_ports(void)
+{
+ int i, irqflag = 0;
+
+ if (nr_uarts > UART_NR)
+ nr_uarts = UART_NR;
+
+ /*
+ * Set up initial isa ports based on nr_uart module param, or else
+ * default to CONFIG_SERIAL_8250_RUNTIME_UARTS. Note that we do not
+ * need to increase nr_uarts when setting up the initial isa ports.
+ */
+ for (i = 0; i < nr_uarts; i++)
+ serial8250_setup_port(i);
+
+ /* chain base port ops to support Remote Supervisor Adapter */
+ univ8250_port_ops = *univ8250_port_base_ops;
+ univ8250_rsa_support(&univ8250_port_ops);
+
+ if (share_irqs)
+ irqflag = IRQF_SHARED;
+
+ for (i = 0; i < ARRAY_SIZE(old_serial_port) && i < nr_uarts; i++) {
+ struct uart_8250_port *up = serial8250_get_port(i);
+ struct uart_port *port = &up->port;
+
+ port->iobase = old_serial_port[i].port;
+ port->irq = irq_canonicalize(old_serial_port[i].irq);
+ port->irqflags = 0;
+ port->uartclk = old_serial_port[i].baud_base * 16;
+ port->flags = old_serial_port[i].flags;
+ port->hub6 = 0;
+ port->membase = old_serial_port[i].iomem_base;
+ port->iotype = old_serial_port[i].io_type;
+ port->regshift = old_serial_port[i].iomem_reg_shift;
+
+ port->irqflags |= irqflag;
+ if (serial8250_isa_config != NULL)
+ serial8250_isa_config(i, &up->port, &up->capabilities);
+ }
+}
+
+void __init serial8250_isa_init_ports(void)
+{
+ DO_ONCE(__serial8250_isa_init_ports);
+}
+
+/*
+ * Register a set of serial devices attached to a platform device. The
+ * list is terminated with a zero flags entry, which means we expect
+ * all entries to have at least UPF_BOOT_AUTOCONF set.
+ */
+static int serial8250_probe(struct platform_device *dev)
+{
+ struct plat_serial8250_port *p = dev_get_platdata(&dev->dev);
+ struct uart_8250_port uart;
+ int ret, i, irqflag = 0;
+
+ memset(&uart, 0, sizeof(uart));
+
+ if (share_irqs)
+ irqflag = IRQF_SHARED;
+
+ for (i = 0; p && p->flags != 0; p++, i++) {
+ uart.port.iobase = p->iobase;
+ uart.port.membase = p->membase;
+ uart.port.irq = p->irq;
+ uart.port.irqflags = p->irqflags;
+ uart.port.uartclk = p->uartclk;
+ uart.port.regshift = p->regshift;
+ uart.port.iotype = p->iotype;
+ uart.port.flags = p->flags;
+ uart.port.mapbase = p->mapbase;
+ uart.port.mapsize = p->mapsize;
+ uart.port.hub6 = p->hub6;
+ uart.port.has_sysrq = p->has_sysrq;
+ uart.port.private_data = p->private_data;
+ uart.port.type = p->type;
+ uart.bugs = p->bugs;
+ uart.port.serial_in = p->serial_in;
+ uart.port.serial_out = p->serial_out;
+ uart.dl_read = p->dl_read;
+ uart.dl_write = p->dl_write;
+ uart.port.handle_irq = p->handle_irq;
+ uart.port.handle_break = p->handle_break;
+ uart.port.set_termios = p->set_termios;
+ uart.port.set_ldisc = p->set_ldisc;
+ uart.port.get_mctrl = p->get_mctrl;
+ uart.port.pm = p->pm;
+ uart.port.dev = &dev->dev;
+ uart.port.irqflags |= irqflag;
+ ret = serial8250_register_8250_port(&uart);
+ if (ret < 0) {
+ dev_err(&dev->dev, "unable to register port at index %d "
+ "(IO%lx MEM%llx IRQ%d): %d\n", i,
+ p->iobase, (unsigned long long)p->mapbase,
+ p->irq, ret);
+ }
+ }
+ return 0;
+}
+
+/*
+ * Remove serial ports registered against a platform device.
+ */
+static void serial8250_remove(struct platform_device *dev)
+{
+ int i;
+
+ for (i = 0; i < nr_uarts; i++) {
+ struct uart_8250_port *up = serial8250_get_port(i);
+
+ if (up->port.dev == &dev->dev)
+ serial8250_unregister_port(i);
+ }
+}
+
+static int serial8250_suspend(struct platform_device *dev, pm_message_t state)
+{
+ int i;
+
+ for (i = 0; i < UART_NR; i++) {
+ struct uart_8250_port *up = serial8250_get_port(i);
+
+ if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
+ uart_suspend_port(&serial8250_reg, &up->port);
+ }
+
+ return 0;
+}
+
+static int serial8250_resume(struct platform_device *dev)
+{
+ int i;
+
+ for (i = 0; i < UART_NR; i++) {
+ struct uart_8250_port *up = serial8250_get_port(i);
+
+ if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
+ serial8250_resume_port(i);
+ }
+
+ return 0;
+}
+
+static struct platform_driver serial8250_isa_driver = {
+ .probe = serial8250_probe,
+ .remove_new = serial8250_remove,
+ .suspend = serial8250_suspend,
+ .resume = serial8250_resume,
+ .driver = {
+ .name = "serial8250",
+ },
+};
+
+/*
+ * This "device" covers _all_ ISA 8250-compatible serial devices listed
+ * in the table in include/asm/serial.h
+ */
+struct platform_device *serial8250_isa_devs;
+
+static int __init serial8250_init(void)
+{
+ int ret;
+
+ if (nr_uarts == 0)
+ return -ENODEV;
+
+ serial8250_isa_init_ports();
+
+ pr_info("Serial: 8250/16550 driver, %d ports, IRQ sharing %s\n",
+ nr_uarts, str_enabled_disabled(share_irqs));
+
+#ifdef CONFIG_SPARC
+ ret = sunserial_register_minors(&serial8250_reg, UART_NR);
+#else
+ serial8250_reg.nr = UART_NR;
+ ret = uart_register_driver(&serial8250_reg);
+#endif
+ if (ret)
+ goto out;
+
+ ret = serial8250_pnp_init();
+ if (ret)
+ goto unreg_uart_drv;
+
+ serial8250_isa_devs = platform_device_alloc("serial8250",
+ PLAT8250_DEV_LEGACY);
+ if (!serial8250_isa_devs) {
+ ret = -ENOMEM;
+ goto unreg_pnp;
+ }
+
+ ret = platform_device_add(serial8250_isa_devs);
+ if (ret)
+ goto put_dev;
+
+ serial8250_register_ports(&serial8250_reg, &serial8250_isa_devs->dev);
+
+ ret = platform_driver_register(&serial8250_isa_driver);
+ if (ret == 0)
+ goto out;
+
+ platform_device_del(serial8250_isa_devs);
+put_dev:
+ platform_device_put(serial8250_isa_devs);
+unreg_pnp:
+ serial8250_pnp_exit();
+unreg_uart_drv:
+#ifdef CONFIG_SPARC
+ sunserial_unregister_minors(&serial8250_reg, UART_NR);
+#else
+ uart_unregister_driver(&serial8250_reg);
+#endif
+out:
+ return ret;
+}
+module_init(serial8250_init);
+
+static void __exit serial8250_exit(void)
+{
+ struct platform_device *isa_dev = serial8250_isa_devs;
+
+ /*
+ * This tells serial8250_unregister_port() not to re-register
+ * the ports (thereby making serial8250_isa_driver permanently
+ * in use.)
+ */
+ serial8250_isa_devs = NULL;
+
+ platform_driver_unregister(&serial8250_isa_driver);
+ platform_device_unregister(isa_dev);
+
+ serial8250_pnp_exit();
+
+#ifdef CONFIG_SPARC
+ sunserial_unregister_minors(&serial8250_reg, UART_NR);
+#else
+ uart_unregister_driver(&serial8250_reg);
+#endif
+}
+module_exit(serial8250_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Generic 8250/16x50 serial platform driver");
+
+module_param_hw(share_irqs, uint, other, 0644);
+MODULE_PARM_DESC(share_irqs, "Share IRQs with other non-8250/16x50 devices (unsafe)");
+
+module_param(nr_uarts, uint, 0644);
+MODULE_PARM_DESC(nr_uarts, "Maximum number of UARTs supported. (1-" __MODULE_STRING(CONFIG_SERIAL_8250_NR_UARTS) ")");
+
+module_param(skip_txen_test, uint, 0644);
+MODULE_PARM_DESC(skip_txen_test, "Skip checking for the TXEN bug at init time");
+
+MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR);
+
+#ifdef CONFIG_SERIAL_8250_DEPRECATED_OPTIONS
+#ifndef MODULE
+/* This module was renamed to 8250_core in 3.7. Keep the old "8250" name
+ * working as well for the module options so we don't break people. We
+ * need to keep the names identical and the convenient macros will happily
+ * refuse to let us do that by failing the build with redefinition errors
+ * of global variables. So we stick them inside a dummy function to avoid
+ * those conflicts. The options still get parsed, and the redefined
+ * MODULE_PARAM_PREFIX lets us keep the "8250." syntax alive.
+ *
+ * This is hacky. I'm sorry.
+ */
+static void __used s8250_options(void)
+{
+#undef MODULE_PARAM_PREFIX
+#define MODULE_PARAM_PREFIX "8250_core."
+
+ module_param_cb(share_irqs, ¶m_ops_uint, &share_irqs, 0644);
+ module_param_cb(nr_uarts, ¶m_ops_uint, &nr_uarts, 0644);
+ module_param_cb(skip_txen_test, ¶m_ops_uint, &skip_txen_test, 0644);
+}
+#else
+MODULE_ALIAS("8250_core");
+#endif
+#endif
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 893bc49..2786918 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -3473,4 +3473,5 @@ int serial8250_console_exit(struct uart_port *port)
#endif /* CONFIG_SERIAL_8250_CONSOLE */
+MODULE_DESCRIPTION("Base port operations for 8250/16550-type serial ports");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c
index ba96fa9..1ac86b5 100644
--- a/drivers/tty/serial/8250/8250_pxa.c
+++ b/drivers/tty/serial/8250/8250_pxa.c
@@ -182,5 +182,6 @@ OF_EARLYCON_DECLARE(mmp, "mrvl,mmp-uart", early_serial_pxa_setup);
#endif
MODULE_AUTHOR("Sergei Ianovich");
+MODULE_DESCRIPTION("driver for PXA on-board UARTS");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pxa2xx-uart");
diff --git a/drivers/tty/serial/8250/8250_rsa.c b/drivers/tty/serial/8250/8250_rsa.c
new file mode 100644
index 0000000..dfaa613
--- /dev/null
+++ b/drivers/tty/serial/8250/8250_rsa.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+
+#include "8250.h"
+
+#define PORT_RSA_MAX 4
+static unsigned long probe_rsa[PORT_RSA_MAX];
+static unsigned int probe_rsa_count;
+
+static int rsa8250_request_resource(struct uart_8250_port *up)
+{
+ unsigned long start = UART_RSA_BASE << up->port.regshift;
+ unsigned int size = 8 << up->port.regshift;
+ struct uart_port *port = &up->port;
+ int ret = -EINVAL;
+
+ switch (port->iotype) {
+ case UPIO_HUB6:
+ case UPIO_PORT:
+ start += port->iobase;
+ if (request_region(start, size, "serial-rsa"))
+ ret = 0;
+ else
+ ret = -EBUSY;
+ break;
+ }
+
+ return ret;
+}
+
+static void rsa8250_release_resource(struct uart_8250_port *up)
+{
+ unsigned long offset = UART_RSA_BASE << up->port.regshift;
+ unsigned int size = 8 << up->port.regshift;
+ struct uart_port *port = &up->port;
+
+ switch (port->iotype) {
+ case UPIO_HUB6:
+ case UPIO_PORT:
+ release_region(port->iobase + offset, size);
+ break;
+ }
+}
+
+static void univ8250_config_port(struct uart_port *port, int flags)
+{
+ struct uart_8250_port *up = up_to_u8250p(port);
+ unsigned int i;
+
+ up->probe &= ~UART_PROBE_RSA;
+ if (port->type == PORT_RSA) {
+ if (rsa8250_request_resource(up) == 0)
+ up->probe |= UART_PROBE_RSA;
+ } else if (flags & UART_CONFIG_TYPE) {
+ for (i = 0; i < probe_rsa_count; i++) {
+ if (probe_rsa[i] == up->port.iobase) {
+ if (rsa8250_request_resource(up) == 0)
+ up->probe |= UART_PROBE_RSA;
+ break;
+ }
+ }
+ }
+
+ univ8250_port_base_ops->config_port(port, flags);
+
+ if (port->type != PORT_RSA && up->probe & UART_PROBE_RSA)
+ rsa8250_release_resource(up);
+}
+
+static int univ8250_request_port(struct uart_port *port)
+{
+ struct uart_8250_port *up = up_to_u8250p(port);
+ int ret;
+
+ ret = univ8250_port_base_ops->request_port(port);
+ if (ret == 0 && port->type == PORT_RSA) {
+ ret = rsa8250_request_resource(up);
+ if (ret < 0)
+ univ8250_port_base_ops->release_port(port);
+ }
+
+ return ret;
+}
+
+static void univ8250_release_port(struct uart_port *port)
+{
+ struct uart_8250_port *up = up_to_u8250p(port);
+
+ if (port->type == PORT_RSA)
+ rsa8250_release_resource(up);
+ univ8250_port_base_ops->release_port(port);
+}
+
+void univ8250_rsa_support(struct uart_ops *ops)
+{
+ ops->config_port = univ8250_config_port;
+ ops->request_port = univ8250_request_port;
+ ops->release_port = univ8250_release_port;
+}
+
+module_param_hw_array(probe_rsa, ulong, ioport, &probe_rsa_count, 0444);
+MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA");
+
+#ifdef CONFIG_SERIAL_8250_DEPRECATED_OPTIONS
+#ifndef MODULE
+/*
+ * Keep the old "8250" name working as well for the module options so we don't
+ * break people. We need to keep the names identical and the convenient macros
+ * will happily refuse to let us do that by failing the build with redefinition
+ * errors of global variables. So we stick them inside a dummy function to
+ * avoid those conflicts. The options still get parsed, and the redefined
+ * MODULE_PARAM_PREFIX lets us keep the "8250." syntax alive.
+ *
+ * This is hacky. I'm sorry.
+ */
+static void __used rsa8250_options(void)
+{
+#undef MODULE_PARAM_PREFIX
+#define MODULE_PARAM_PREFIX "8250_core."
+
+ __module_param_call(MODULE_PARAM_PREFIX, probe_rsa,
+ ¶m_array_ops, .arr = &__param_arr_probe_rsa,
+ 0444, -1, 0);
+}
+#endif
+#endif
diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile
index 69ac002..1516de6 100644
--- a/drivers/tty/serial/8250/Makefile
+++ b/drivers/tty/serial/8250/Makefile
@@ -3,9 +3,13 @@
# Makefile for the 8250 serial device drivers.
#
-obj-$(CONFIG_SERIAL_8250) += 8250.o 8250_base.o
+obj-$(CONFIG_SERIAL_8250) += 8250.o
8250-y := 8250_core.o
+8250-y += 8250_platform.o
8250-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o
+8250-$(CONFIG_SERIAL_8250_RSA) += 8250_rsa.o
+
+obj-$(CONFIG_SERIAL_8250) += 8250_base.o
8250_base-y := 8250_port.o
8250_base-$(CONFIG_SERIAL_8250_DMA) += 8250_dma.o
8250_base-$(CONFIG_SERIAL_8250_DWLIB) += 8250_dwlib.o
diff --git a/drivers/tty/serial/8250/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c
index 2056aed..58e279e 100644
--- a/drivers/tty/serial/8250/serial_cs.c
+++ b/drivers/tty/serial/8250/serial_cs.c
@@ -864,4 +864,5 @@ static struct pcmcia_driver serial_cs_driver = {
};
module_pcmcia_driver(serial_cs_driver);
+MODULE_DESCRIPTION("driver for PCMCIA serial devices");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/esp32_acm.c b/drivers/tty/serial/esp32_acm.c
index d4e8bdb..85eb039 100644
--- a/drivers/tty/serial/esp32_acm.c
+++ b/drivers/tty/serial/esp32_acm.c
@@ -455,4 +455,5 @@ module_init(esp32s3_acm_init);
module_exit(esp32s3_acm_exit);
MODULE_AUTHOR("Max Filippov <jcmvbkbc@gmail.com>");
+MODULE_DESCRIPTION("Espressif ESP32 USB ACM gadget support");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/esp32_uart.c b/drivers/tty/serial/esp32_uart.c
index 6fc61f3..8c86cf9 100644
--- a/drivers/tty/serial/esp32_uart.c
+++ b/drivers/tty/serial/esp32_uart.c
@@ -775,4 +775,5 @@ module_init(esp32_uart_init);
module_exit(esp32_uart_exit);
MODULE_AUTHOR("Max Filippov <jcmvbkbc@gmail.com>");
+MODULE_DESCRIPTION("Espressif ESP32 UART support");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index ff32cd2d..67d4a72 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -265,6 +265,11 @@ 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);
@@ -378,7 +383,7 @@ 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);
@@ -402,7 +407,7 @@ 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)
@@ -467,7 +472,7 @@ 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);
@@ -512,7 +517,7 @@ 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);
@@ -663,7 +668,7 @@ 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;
@@ -1044,7 +1049,7 @@ 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;
@@ -1059,7 +1064,7 @@ 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);
@@ -1070,7 +1075,7 @@ 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)) {
@@ -1113,7 +1118,7 @@ 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;
@@ -1435,7 +1440,7 @@ 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;
@@ -1549,7 +1554,7 @@ 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;
int loops;
@@ -1674,7 +1679,7 @@ 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)
@@ -1701,7 +1706,7 @@ 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;
@@ -1904,7 +1909,7 @@ 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;
@@ -1953,7 +1958,7 @@ 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;
@@ -1962,7 +1967,7 @@ 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 */
@@ -1984,7 +1989,7 @@ 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, ufcr;
if (rs485conf->flags & SER_RS485_ENABLED) {
@@ -2043,7 +2048,7 @@ 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();
diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c
index 8b60ac0..ecec483 100644
--- a/drivers/tty/serial/owl-uart.c
+++ b/drivers/tty/serial/owl-uart.c
@@ -761,4 +761,5 @@ static void __exit owl_uart_exit(void)
module_init(owl_uart_init);
module_exit(owl_uart_exit);
+MODULE_DESCRIPTION("Actions Semi Owl family serial console");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index bf0065d..c79dcd7 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -14,6 +14,7 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/export.h>
+#include <linux/gpio/consumer.h>
#include <linux/gpio/driver.h>
#include <linux/idr.h>
#include <linux/kthread.h>
@@ -1467,6 +1468,29 @@ static const struct serial_rs485 sc16is7xx_rs485_supported = {
.delay_rts_after_send = 1, /* Not supported but keep returning -EINVAL */
};
+/* Reset device, purging any pending irq / data */
+static int sc16is7xx_reset(struct device *dev, struct regmap *regmap)
+{
+ struct gpio_desc *reset_gpio;
+
+ /* Assert reset GPIO if defined and valid. */
+ reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(reset_gpio), "Failed to get reset GPIO\n");
+
+ if (reset_gpio) {
+ /* The minimum reset pulse width is 3 us. */
+ fsleep(5);
+ gpiod_set_value_cansleep(reset_gpio, 0); /* Deassert GPIO */
+ } else {
+ /* Software reset */
+ regmap_write(regmap, SC16IS7XX_IOCONTROL_REG,
+ SC16IS7XX_IOCONTROL_SRESET_BIT);
+ }
+
+ return 0;
+}
+
int sc16is7xx_probe(struct device *dev, const struct sc16is7xx_devtype *devtype,
struct regmap *regmaps[], int irq)
{
@@ -1536,9 +1560,9 @@ int sc16is7xx_probe(struct device *dev, const struct sc16is7xx_devtype *devtype,
}
sched_set_fifo(s->kworker_task);
- /* reset device, purging any pending irq / data */
- regmap_write(regmaps[0], SC16IS7XX_IOCONTROL_REG,
- SC16IS7XX_IOCONTROL_SRESET_BIT);
+ ret = sc16is7xx_reset(dev, regmaps[0]);
+ if (ret)
+ goto out_kthread;
/* Mark each port line and status as uninitialised. */
for (i = 0; i < devtype->nr_uart; ++i) {
@@ -1663,6 +1687,7 @@ int sc16is7xx_probe(struct device *dev, const struct sc16is7xx_devtype *devtype,
uart_remove_one_port(&sc16is7xx_uart, &s->p[i].port);
}
+out_kthread:
kthread_stop(s->kworker_task);
out_clk:
diff --git a/drivers/tty/serial/serial_base.h b/drivers/tty/serial/serial_base.h
index b6c38d2..0d50db5 100644
--- a/drivers/tty/serial/serial_base.h
+++ b/drivers/tty/serial/serial_base.h
@@ -49,3 +49,19 @@ void serial_ctrl_unregister_port(struct uart_driver *drv, struct uart_port *port
int serial_core_register_port(struct uart_driver *drv, struct uart_port *port);
void serial_core_unregister_port(struct uart_driver *drv, struct uart_port *port);
+
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+
+int serial_base_match_and_update_preferred_console(struct uart_driver *drv,
+ struct uart_port *port);
+
+#else
+
+static inline
+int serial_base_match_and_update_preferred_console(struct uart_driver *drv,
+ struct uart_port *port)
+{
+ return 0;
+}
+
+#endif
diff --git a/drivers/tty/serial/serial_base_bus.c b/drivers/tty/serial/serial_base_bus.c
index 4df2a4b..d822499 100644
--- a/drivers/tty/serial/serial_base_bus.c
+++ b/drivers/tty/serial/serial_base_bus.c
@@ -8,6 +8,7 @@
* The serial core bus manages the serial core controller instances.
*/
+#include <linux/cleanup.h>
#include <linux/container_of.h>
#include <linux/device.h>
#include <linux/idr.h>
@@ -204,6 +205,42 @@ void serial_base_port_device_remove(struct serial_port_device *port_dev)
put_device(&port_dev->dev);
}
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+
+/**
+ * serial_base_match_and_update_preferred_console - Match and update a preferred console
+ * @drv: Serial port device driver
+ * @port: Serial port instance
+ *
+ * Tries to match and update the preferred console for a serial port for
+ * the kernel command line option console=DEVNAME:0.0.
+ *
+ * Cannot be called early for ISA ports, depends on struct device.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int serial_base_match_and_update_preferred_console(struct uart_driver *drv,
+ struct uart_port *port)
+{
+ const char *port_match __free(kfree) = NULL;
+ int ret;
+
+ port_match = kasprintf(GFP_KERNEL, "%s:%d.%d", dev_name(port->dev),
+ port->ctrl_id, port->port_id);
+ if (!port_match)
+ return -ENOMEM;
+
+ ret = match_devname_and_update_preferred_console(port_match,
+ drv->dev_name,
+ port->line);
+ if (ret == -ENOENT)
+ return 0;
+
+ return ret;
+}
+
+#endif
+
static int serial_base_init(void)
{
int ret;
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 2a8006e..9a18d0b 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3422,6 +3422,10 @@ int serial_core_register_port(struct uart_driver *drv, struct uart_port *port)
if (ret)
goto err_unregister_ctrl_dev;
+ ret = serial_base_match_and_update_preferred_console(drv, port);
+ if (ret)
+ goto err_unregister_port_dev;
+
ret = serial_core_add_one_port(drv, port);
if (ret)
goto err_unregister_port_dev;
diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c
index e51ca59..8855688 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.c
+++ b/drivers/tty/serial/serial_mctrl_gpio.c
@@ -385,4 +385,5 @@ void mctrl_gpio_disable_irq_wake(struct mctrl_gpios *gpios)
}
EXPORT_SYMBOL_GPL(mctrl_gpio_disable_irq_wake);
+MODULE_DESCRIPTION("Helpers for controlling modem lines via GPIO");
MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index f738980..b80e9a5 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -318,6 +318,37 @@ static const struct sci_port_params sci_port_params[SCIx_NR_REGTYPES] = {
},
/*
+ * The "SCIF" that is in RZ/V2H(P) SoC is similar to one found on RZ/G2L SoC
+ * with below differences,
+ * - Break out of interrupts are different: ERI, BRI, RXI, TXI, TEI, DRI,
+ * TEI-DRI, RXI-EDGE and TXI-EDGE.
+ * - SCSMR register does not have CM bit (BIT(7)) ie it does not support synchronous mode.
+ * - SCFCR register does not have SCFCR_MCE bit.
+ * - SCSPTR register has only bits SCSPTR_SPB2DT and SCSPTR_SPB2IO.
+ */
+ [SCIx_RZV2H_SCIF_REGTYPE] = {
+ .regs = {
+ [SCSMR] = { 0x00, 16 },
+ [SCBRR] = { 0x02, 8 },
+ [SCSCR] = { 0x04, 16 },
+ [SCxTDR] = { 0x06, 8 },
+ [SCxSR] = { 0x08, 16 },
+ [SCxRDR] = { 0x0a, 8 },
+ [SCFCR] = { 0x0c, 16 },
+ [SCFDR] = { 0x0e, 16 },
+ [SCSPTR] = { 0x10, 16 },
+ [SCLSR] = { 0x12, 16 },
+ [SEMR] = { 0x14, 8 },
+ },
+ .fifosize = 16,
+ .overrun_reg = SCLSR,
+ .overrun_mask = SCLSR_ORER,
+ .sampling_rate_mask = SCI_SR(32),
+ .error_mask = SCIF_DEFAULT_ERROR_MASK,
+ .error_clear = SCIF_ERROR_CLEAR,
+ },
+
+ /*
* Common SH-3 SCIF definitions.
*/
[SCIx_SH3_SCIF_REGTYPE] = {
@@ -757,7 +788,7 @@ static void sci_init_pins(struct uart_port *port, unsigned int cflag)
}
sci_serial_out(port, SCPDR, data);
sci_serial_out(port, SCPCR, ctrl);
- } else if (sci_getreg(port, SCSPTR)->size) {
+ } else if (sci_getreg(port, SCSPTR)->size && s->cfg->regtype != SCIx_RZV2H_SCIF_REGTYPE) {
u16 status = sci_serial_in(port, SCSPTR);
/* RTS# is always output; and active low, unless autorts */
@@ -2124,8 +2155,9 @@ static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl)
if (!(mctrl & TIOCM_RTS)) {
/* Disable Auto RTS */
- sci_serial_out(port, SCFCR,
- sci_serial_in(port, SCFCR) & ~SCFCR_MCE);
+ if (s->cfg->regtype != SCIx_RZV2H_SCIF_REGTYPE)
+ sci_serial_out(port, SCFCR,
+ sci_serial_in(port, SCFCR) & ~SCFCR_MCE);
/* Clear RTS */
sci_set_rts(port, 0);
@@ -2137,8 +2169,9 @@ static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl)
}
/* Enable Auto RTS */
- sci_serial_out(port, SCFCR,
- sci_serial_in(port, SCFCR) | SCFCR_MCE);
+ if (s->cfg->regtype != SCIx_RZV2H_SCIF_REGTYPE)
+ sci_serial_out(port, SCFCR,
+ sci_serial_in(port, SCFCR) | SCFCR_MCE);
} else {
/* Set RTS */
sci_set_rts(port, 1);
@@ -3225,6 +3258,10 @@ static const struct of_device_id of_sci_match[] __maybe_unused = {
.compatible = "renesas,scif-r9a07g044",
.data = SCI_OF_DATA(PORT_SCIF, SCIx_RZ_SCIFA_REGTYPE),
},
+ {
+ .compatible = "renesas,scif-r9a09g057",
+ .data = SCI_OF_DATA(PORT_SCIF, SCIx_RZV2H_SCIF_REGTYPE),
+ },
/* Family-specific types */
{
.compatible = "renesas,rcar-gen1-scif",
@@ -3533,6 +3570,13 @@ static int __init rzscifa_early_console_setup(struct earlycon_device *device,
return early_console_setup(device, PORT_SCIF);
}
+static int __init rzv2hscif_early_console_setup(struct earlycon_device *device,
+ const char *opt)
+{
+ port_cfg.regtype = SCIx_RZV2H_SCIF_REGTYPE;
+ return early_console_setup(device, PORT_SCIF);
+}
+
static int __init scifa_early_console_setup(struct earlycon_device *device,
const char *opt)
{
@@ -3553,6 +3597,7 @@ OF_EARLYCON_DECLARE(sci, "renesas,sci", sci_early_console_setup);
OF_EARLYCON_DECLARE(scif, "renesas,scif", scif_early_console_setup);
OF_EARLYCON_DECLARE(scif, "renesas,scif-r7s9210", rzscifa_early_console_setup);
OF_EARLYCON_DECLARE(scif, "renesas,scif-r9a07g044", rzscifa_early_console_setup);
+OF_EARLYCON_DECLARE(scif, "renesas,scif-r9a09g057", rzv2hscif_early_console_setup);
OF_EARLYCON_DECLARE(scifa, "renesas,scifa", scifa_early_console_setup);
OF_EARLYCON_DECLARE(scifb, "renesas,scifb", scifb_early_console_setup);
OF_EARLYCON_DECLARE(hscif, "renesas,hscif", hscif_early_console_setup);
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 67a5fc7..0f463da 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -1382,44 +1382,29 @@ static inline struct console *SUNSU_CONSOLE(void)
static enum su_type su_get_type(struct device_node *dp)
{
- struct device_node *ap = of_find_node_by_path("/aliases");
- enum su_type rc = SU_PORT_PORT;
+ struct device_node *ap __free(device_node) =
+ of_find_node_by_path("/aliases");
if (ap) {
const char *keyb = of_get_property(ap, "keyboard", NULL);
const char *ms = of_get_property(ap, "mouse", NULL);
- struct device_node *match;
if (keyb) {
- match = of_find_node_by_path(keyb);
+ struct device_node *match __free(device_node) =
+ of_find_node_by_path(keyb);
- /*
- * The pointer is used as an identifier not
- * as a pointer, we can drop the refcount on
- * the of__node immediately after getting it.
- */
- of_node_put(match);
-
- if (dp == match) {
- rc = SU_PORT_KBD;
- goto out;
- }
+ if (dp == match)
+ return SU_PORT_KBD;
}
if (ms) {
- match = of_find_node_by_path(ms);
+ struct device_node *match __free(device_node) =
+ of_find_node_by_path(ms);
- of_node_put(match);
-
- if (dp == match) {
- rc = SU_PORT_MS;
- goto out;
- }
+ if (dp == match)
+ return SU_PORT_MS;
}
}
-
-out:
- of_node_put(ap);
- return rc;
+ return SU_PORT_PORT;
}
static int su_probe(struct platform_device *op)
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 8112d9d..bd8d92e 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -89,6 +89,7 @@
*/
static const char driver_name[] = "SyncLink GT";
static const char tty_dev_prefix[] = "ttySLG";
+MODULE_DESCRIPTION("Device driver for Microgate SyncLink GT serial adapters");
MODULE_LICENSE("GPL");
#define MAX_DEVICES 32
diff --git a/drivers/tty/ttynull.c b/drivers/tty/ttynull.c
index e4c4273..6b2f720 100644
--- a/drivers/tty/ttynull.c
+++ b/drivers/tty/ttynull.c
@@ -106,4 +106,5 @@ static void __exit ttynull_exit(void)
module_init(ttynull_init);
module_exit(ttynull_exit);
+MODULE_DESCRIPTION("NULL TTY driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index a2116e1..804355d 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -1033,9 +1033,7 @@ static int kbd_led_trigger_activate(struct led_classdev *cdev)
tasklet_disable(&keyboard_tasklet);
if (ledstate != -1U)
- led_trigger_event(&trigger->trigger,
- ledstate & trigger->mask ?
- LED_FULL : LED_OFF);
+ led_set_brightness(cdev, ledstate & trigger->mask ? LED_FULL : LED_OFF);
tasklet_enable(&keyboard_tasklet);
return 0;
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 65c5184..7239976 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -60,6 +60,10 @@ static inline const char *printk_skip_headers(const char *buffer)
#define CONSOLE_LOGLEVEL_DEFAULT CONFIG_CONSOLE_LOGLEVEL_DEFAULT
#define CONSOLE_LOGLEVEL_QUIET CONFIG_CONSOLE_LOGLEVEL_QUIET
+int match_devname_and_update_preferred_console(const char *match,
+ const char *name,
+ const short idx);
+
extern int console_printk[];
#define console_loglevel (console_printk[0])
diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index 1c89611..0f2f50b 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -37,6 +37,7 @@ enum {
SCIx_SH7705_SCIF_REGTYPE,
SCIx_HSCIF_REGTYPE,
SCIx_RZ_SCIFA_REGTYPE,
+ SCIx_RZV2H_SCIF_REGTYPE,
SCIx_NR_REGTYPES,
};
diff --git a/kernel/printk/console_cmdline.h b/kernel/printk/console_cmdline.h
index 3ca74ad..0ab573b 100644
--- a/kernel/printk/console_cmdline.h
+++ b/kernel/printk/console_cmdline.h
@@ -6,6 +6,7 @@ struct console_cmdline
{
char name[16]; /* Name of the driver */
int index; /* Minor dev. to use */
+ char devname[32]; /* DEVNAME:0.0 style device name */
bool user_specified; /* Specified by command line vs. platform */
char *options; /* Options for the driver */
#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index dddb15f..7d91593 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2429,18 +2429,23 @@ static void set_user_specified(struct console_cmdline *c, bool user_specified)
console_set_on_cmdline = 1;
}
-static int __add_preferred_console(const char *name, const short idx, char *options,
+static int __add_preferred_console(const char *name, const short idx,
+ const char *devname, char *options,
char *brl_options, bool user_specified)
{
struct console_cmdline *c;
int i;
+ if (!name && !devname)
+ return -EINVAL;
+
/*
* We use a signed short index for struct console for device drivers to
* indicate a not yet assigned index or port. However, a negative index
- * value is not valid for preferred console.
+ * value is not valid when the console name and index are defined on
+ * the command line.
*/
- if (idx < 0)
+ if (name && idx < 0)
return -EINVAL;
/*
@@ -2448,9 +2453,10 @@ static int __add_preferred_console(const char *name, const short idx, char *opti
* if we have a slot free.
*/
for (i = 0, c = console_cmdline;
- i < MAX_CMDLINECONSOLES && c->name[0];
+ i < MAX_CMDLINECONSOLES && (c->name[0] || c->devname[0]);
i++, c++) {
- if (strcmp(c->name, name) == 0 && c->index == idx) {
+ if ((name && strcmp(c->name, name) == 0 && c->index == idx) ||
+ (devname && strcmp(c->devname, devname) == 0)) {
if (!brl_options)
preferred_console = i;
set_user_specified(c, user_specified);
@@ -2461,7 +2467,10 @@ static int __add_preferred_console(const char *name, const short idx, char *opti
return -E2BIG;
if (!brl_options)
preferred_console = i;
- strscpy(c->name, name, sizeof(c->name));
+ if (name)
+ strscpy(c->name, name);
+ if (devname)
+ strscpy(c->devname, devname);
c->options = options;
set_user_specified(c, user_specified);
braille_set_options(c, brl_options);
@@ -2486,8 +2495,13 @@ __setup("console_msg_format=", console_msg_format_setup);
*/
static int __init console_setup(char *str)
{
- char buf[sizeof(console_cmdline[0].name) + 4]; /* 4 for "ttyS" */
- char *s, *options, *brl_options = NULL;
+ static_assert(sizeof(console_cmdline[0].devname) >= sizeof(console_cmdline[0].name) + 4);
+ char buf[sizeof(console_cmdline[0].devname)];
+ char *brl_options = NULL;
+ char *ttyname = NULL;
+ char *devname = NULL;
+ char *options;
+ char *s;
int idx;
/*
@@ -2496,17 +2510,23 @@ static int __init console_setup(char *str)
* for exactly this purpose.
*/
if (str[0] == 0 || strcmp(str, "null") == 0) {
- __add_preferred_console("ttynull", 0, NULL, NULL, true);
+ __add_preferred_console("ttynull", 0, NULL, NULL, NULL, true);
return 1;
}
if (_braille_console_setup(&str, &brl_options))
return 1;
+ /* For a DEVNAME:0.0 style console the character device is unknown early */
+ if (strchr(str, ':'))
+ devname = buf;
+ else
+ ttyname = buf;
+
/*
* Decode str into name, index, options.
*/
- if (isdigit(str[0]))
+ if (ttyname && isdigit(str[0]))
scnprintf(buf, sizeof(buf), "ttyS%s", str);
else
strscpy(buf, str);
@@ -2523,12 +2543,18 @@ static int __init console_setup(char *str)
#endif
for (s = buf; *s; s++)
- if (isdigit(*s) || *s == ',')
+ if ((ttyname && isdigit(*s)) || *s == ',')
break;
- idx = simple_strtoul(s, NULL, 10);
+
+ /* @idx will get defined when devname matches. */
+ if (devname)
+ idx = -1;
+ else
+ idx = simple_strtoul(s, NULL, 10);
+
*s = 0;
- __add_preferred_console(buf, idx, options, brl_options, true);
+ __add_preferred_console(ttyname, idx, devname, options, brl_options, true);
return 1;
}
__setup("console=", console_setup);
@@ -2548,7 +2574,51 @@ __setup("console=", console_setup);
*/
int add_preferred_console(const char *name, const short idx, char *options)
{
- return __add_preferred_console(name, idx, options, NULL, false);
+ return __add_preferred_console(name, idx, NULL, options, NULL, false);
+}
+
+/**
+ * match_devname_and_update_preferred_console - Update a preferred console
+ * when matching devname is found.
+ * @devname: DEVNAME:0.0 style device name
+ * @name: Name of the corresponding console driver, e.g. "ttyS"
+ * @idx: Console index, e.g. port number.
+ *
+ * The function checks whether a device with the given @devname is
+ * preferred via the console=DEVNAME:0.0 command line option.
+ * It fills the missing console driver name and console index
+ * so that a later register_console() call could find (match)
+ * and enable this device.
+ *
+ * It might be used when a driver subsystem initializes particular
+ * devices with already known DEVNAME:0.0 style names. And it
+ * could predict which console driver name and index this device
+ * would later get associated with.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int match_devname_and_update_preferred_console(const char *devname,
+ const char *name,
+ const short idx)
+{
+ struct console_cmdline *c = console_cmdline;
+ int i;
+
+ if (!devname || !strlen(devname) || !name || !strlen(name) || idx < 0)
+ return -EINVAL;
+
+ for (i = 0; i < MAX_CMDLINECONSOLES && (c->name[0] || c->devname[0]);
+ i++, c++) {
+ if (!strcmp(devname, c->devname)) {
+ pr_info("associate the preferred console \"%s\" with \"%s%d\"\n",
+ devname, name, idx);
+ strscpy(c->name, name);
+ c->index = idx;
+ return 0;
+ }
+ }
+
+ return -ENOENT;
}
bool console_suspend_enabled = true;
@@ -3318,8 +3388,11 @@ static int try_enable_preferred_console(struct console *newcon,
int i, err;
for (i = 0, c = console_cmdline;
- i < MAX_CMDLINECONSOLES && c->name[0];
+ i < MAX_CMDLINECONSOLES && (c->name[0] || c->devname[0]);
i++, c++) {
+ /* Console not yet initialized? */
+ if (!c->name[0])
+ continue;
if (c->user_specified != user_specified)
continue;
if (!newcon->match ||
