From: Hector Martin <marcan@marcan.st>
To: linux-arm-kernel@lists.infradead.org
Cc: Hector Martin <marcan@marcan.st>, Marc Zyngier <maz@kernel.org>,
Rob Herring <robh@kernel.org>, Arnd Bergmann <arnd@kernel.org>,
Olof Johansson <olof@lixom.net>,
Krzysztof Kozlowski <krzk@kernel.org>,
Mark Kettenis <mark.kettenis@xs4all.nl>,
Tony Lindgren <tony@atomide.com>,
Mohamed Mediouni <mohamed.mediouni@caramail.com>,
Stan Skowronek <stan@corellium.com>,
Alexander Graf <graf@amazon.com>, Will Deacon <will@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Mark Rutland <mark.rutland@arm.com>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Christoph Hellwig <hch@infradead.org>,
"David S. Miller" <davem@davemloft.net>,
devicetree@vger.kernel.org, linux-serial@vger.kernel.org,
linux-doc@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFT PATCH v3 20/27] tty: serial: samsung_tty: Add s3c24xx_port_type
Date: Fri, 5 Mar 2021 06:38:55 +0900 [thread overview]
Message-ID: <20210304213902.83903-21-marcan@marcan.st> (raw)
In-Reply-To: <20210304213902.83903-1-marcan@marcan.st>
This decouples the TTY layer PORT_ types, which are exposed to
userspace, from the driver-internal flag of what kind of port this is.
This removes s3c24xx_serial_has_interrupt_mask, which was just checking
for a specific type anyway.
Signed-off-by: Hector Martin <marcan@marcan.st>
---
drivers/tty/serial/samsung_tty.c | 112 +++++++++++++++++++------------
1 file changed, 70 insertions(+), 42 deletions(-)
diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 33b421dbeb83..39b2eb165bdc 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -56,9 +56,15 @@
/* flag to ignore all characters coming in */
#define RXSTAT_DUMMY_READ (0x10000000)
+enum s3c24xx_port_type {
+ TYPE_S3C24XX,
+ TYPE_S3C6400,
+};
+
struct s3c24xx_uart_info {
char *name;
- unsigned int type;
+ enum s3c24xx_port_type type;
+ unsigned int port_type;
unsigned int fifosize;
unsigned long rx_fifomask;
unsigned long rx_fifoshift;
@@ -229,16 +235,6 @@ static int s3c24xx_serial_txempty_nofifo(struct uart_port *port)
return rd_regl(port, S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE;
}
-/*
- * s3c64xx and later SoC's include the interrupt mask and status registers in
- * the controller itself, unlike the s3c24xx SoC's which have these registers
- * in the interrupt controller. Check if the port type is s3c64xx or higher.
- */
-static int s3c24xx_serial_has_interrupt_mask(struct uart_port *port)
-{
- return to_ourport(port)->info->type == PORT_S3C6400;
-}
-
static void s3c24xx_serial_rx_enable(struct uart_port *port)
{
struct s3c24xx_uart_port *ourport = to_ourport(port);
@@ -290,10 +286,14 @@ static void s3c24xx_serial_stop_tx(struct uart_port *port)
if (!ourport->tx_enabled)
return;
- if (s3c24xx_serial_has_interrupt_mask(port))
+ switch (ourport->info->type) {
+ case TYPE_S3C6400:
s3c24xx_set_bit(port, S3C64XX_UINTM_TXD, S3C64XX_UINTM);
- else
+ break;
+ default:
disable_irq_nosync(ourport->tx_irq);
+ break;
+ }
if (dma && dma->tx_chan && ourport->tx_in_progress == S3C24XX_TX_DMA) {
dmaengine_pause(dma->tx_chan);
@@ -354,10 +354,14 @@ static void enable_tx_dma(struct s3c24xx_uart_port *ourport)
u32 ucon;
/* Mask Tx interrupt */
- if (s3c24xx_serial_has_interrupt_mask(port))
+ switch (ourport->info->type) {
+ case TYPE_S3C6400:
s3c24xx_set_bit(port, S3C64XX_UINTM_TXD, S3C64XX_UINTM);
- else
+ break;
+ default:
disable_irq_nosync(ourport->tx_irq);
+ break;
+ }
/* Enable tx dma mode */
ucon = rd_regl(port, S3C2410_UCON);
@@ -387,11 +391,15 @@ static void enable_tx_pio(struct s3c24xx_uart_port *ourport)
wr_regl(port, S3C2410_UCON, ucon);
/* Unmask Tx interrupt */
- if (s3c24xx_serial_has_interrupt_mask(port))
+ switch (ourport->info->type) {
+ case TYPE_S3C6400:
s3c24xx_clear_bit(port, S3C64XX_UINTM_TXD,
S3C64XX_UINTM);
- else
+ break;
+ default:
enable_irq(ourport->tx_irq);
+ break;
+ }
ourport->tx_mode = S3C24XX_TX_PIO;
}
@@ -514,11 +522,15 @@ static void s3c24xx_serial_stop_rx(struct uart_port *port)
if (ourport->rx_enabled) {
dev_dbg(port->dev, "stopping rx\n");
- if (s3c24xx_serial_has_interrupt_mask(port))
+ switch (ourport->info->type) {
+ case TYPE_S3C6400:
s3c24xx_set_bit(port, S3C64XX_UINTM_RXD,
S3C64XX_UINTM);
- else
+ break;
+ default:
disable_irq_nosync(ourport->rx_irq);
+ break;
+ }
ourport->rx_enabled = 0;
}
if (dma && dma->rx_chan) {
@@ -1543,14 +1555,12 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
static const char *s3c24xx_serial_type(struct uart_port *port)
{
- switch (port->type) {
- case PORT_S3C2410:
- return "S3C2410";
- case PORT_S3C2440:
- return "S3C2440";
- case PORT_S3C2412:
- return "S3C2412";
- case PORT_S3C6400:
+ struct s3c24xx_uart_port *ourport = to_ourport(port);
+
+ switch (ourport->info->type) {
+ case TYPE_S3C24XX:
+ return "S3C24XX";
+ case TYPE_S3C6400:
return "S3C6400/10";
default:
return NULL;
@@ -1577,7 +1587,7 @@ static void s3c24xx_serial_config_port(struct uart_port *port, int flags)
if (flags & UART_CONFIG_TYPE &&
s3c24xx_serial_request_port(port) == 0)
- port->type = info->type;
+ port->type = info->port_type;
}
/*
@@ -1588,7 +1598,7 @@ s3c24xx_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
{
struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port);
- if (ser->type != PORT_UNKNOWN && ser->type != info->type)
+ if (ser->type != PORT_UNKNOWN && ser->type != info->port_type)
return -EINVAL;
return 0;
@@ -1927,11 +1937,16 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
ourport->tx_irq = ret + 1;
}
- if (!s3c24xx_serial_has_interrupt_mask(port)) {
+ switch (ourport->info->type) {
+ case TYPE_S3C24XX:
ret = platform_get_irq(platdev, 1);
if (ret > 0)
ourport->tx_irq = ret;
+ break;
+ default:
+ break;
}
+
/*
* DMA is currently supported only on DT platforms, if DMA properties
* are specified.
@@ -1967,10 +1982,14 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
pr_warn("uart: failed to enable baudclk\n");
/* Keep all interrupts masked and cleared */
- if (s3c24xx_serial_has_interrupt_mask(port)) {
+ switch (ourport->info->type) {
+ case TYPE_S3C6400:
wr_regl(port, S3C64XX_UINTM, 0xf);
wr_regl(port, S3C64XX_UINTP, 0xf);
wr_regl(port, S3C64XX_UINTSP, 0xf);
+ break;
+ default:
+ break;
}
dev_dbg(port->dev, "port: map=%pa, mem=%p, irq=%d (%d,%d), clock=%u\n",
@@ -2042,12 +2061,10 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
ourport->drv_data->def_cfg;
switch (ourport->info->type) {
- case PORT_S3C2410:
- case PORT_S3C2412:
- case PORT_S3C2440:
+ case TYPE_S3C24XX:
ourport->port.ops = &s3c24xx_serial_ops;
break;
- case PORT_S3C6400:
+ case TYPE_S3C6400:
ourport->port.ops = &s3c64xx_serial_ops;
break;
}
@@ -2175,7 +2192,8 @@ static int s3c24xx_serial_resume_noirq(struct device *dev)
if (port) {
/* restore IRQ mask */
- if (s3c24xx_serial_has_interrupt_mask(port)) {
+ switch (ourport->info->type) {
+ case TYPE_S3C6400: {
unsigned int uintm = 0xf;
if (ourport->tx_enabled)
@@ -2189,6 +2207,10 @@ static int s3c24xx_serial_resume_noirq(struct device *dev)
if (!IS_ERR(ourport->baudclk))
clk_disable_unprepare(ourport->baudclk);
clk_disable_unprepare(ourport->clk);
+ break;
+ }
+ default:
+ break;
}
}
@@ -2413,7 +2435,8 @@ static struct console s3c24xx_serial_console = {
static struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = {
.info = &(struct s3c24xx_uart_info) {
.name = "Samsung S3C2410 UART",
- .type = PORT_S3C2410,
+ .type = TYPE_S3C24XX,
+ .port_type = PORT_S3C2410,
.fifosize = 16,
.rx_fifomask = S3C2410_UFSTAT_RXMASK,
.rx_fifoshift = S3C2410_UFSTAT_RXSHIFT,
@@ -2440,7 +2463,8 @@ static struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = {
static struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = {
.info = &(struct s3c24xx_uart_info) {
.name = "Samsung S3C2412 UART",
- .type = PORT_S3C2412,
+ .type = TYPE_S3C24XX,
+ .port_type = PORT_S3C2412,
.fifosize = 64,
.has_divslot = 1,
.rx_fifomask = S3C2440_UFSTAT_RXMASK,
@@ -2469,7 +2493,8 @@ static struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = {
static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = {
.info = &(struct s3c24xx_uart_info) {
.name = "Samsung S3C2440 UART",
- .type = PORT_S3C2440,
+ .type = TYPE_S3C24XX,
+ .port_type = PORT_S3C2440,
.fifosize = 64,
.has_divslot = 1,
.rx_fifomask = S3C2440_UFSTAT_RXMASK,
@@ -2498,7 +2523,8 @@ static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = {
static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = {
.info = &(struct s3c24xx_uart_info) {
.name = "Samsung S3C6400 UART",
- .type = PORT_S3C6400,
+ .type = TYPE_S3C6400,
+ .port_type = PORT_S3C6400,
.fifosize = 64,
.has_divslot = 1,
.rx_fifomask = S3C2440_UFSTAT_RXMASK,
@@ -2526,7 +2552,8 @@ static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = {
static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
.info = &(struct s3c24xx_uart_info) {
.name = "Samsung S5PV210 UART",
- .type = PORT_S3C6400,
+ .type = TYPE_S3C6400,
+ .port_type = PORT_S3C6400,
.has_divslot = 1,
.rx_fifomask = S5PV210_UFSTAT_RXMASK,
.rx_fifoshift = S5PV210_UFSTAT_RXSHIFT,
@@ -2554,7 +2581,8 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
#define EXYNOS_COMMON_SERIAL_DRV_DATA \
.info = &(struct s3c24xx_uart_info) { \
.name = "Samsung Exynos UART", \
- .type = PORT_S3C6400, \
+ .type = TYPE_S3C6400, \
+ .port_type = PORT_S3C6400, \
.has_divslot = 1, \
.rx_fifomask = S5PV210_UFSTAT_RXMASK, \
.rx_fifoshift = S5PV210_UFSTAT_RXSHIFT, \
--
2.30.0
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next prev parent reply other threads:[~2021-03-04 21:48 UTC|newest]
Thread overview: 139+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-04 21:38 [RFT PATCH v3 00/27] Apple M1 SoC platform bring-up Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 01/27] arm64: Cope with CPUs stuck in VHE mode Hector Martin
2021-03-24 18:05 ` Will Deacon
2021-03-24 20:00 ` Marc Zyngier
2021-03-26 7:54 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 02/27] dt-bindings: vendor-prefixes: Add apple prefix Hector Martin
2021-03-08 20:26 ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 03/27] dt-bindings: arm: apple: Add bindings for Apple ARM platforms Hector Martin
2021-03-05 10:16 ` Linus Walleij
2021-03-08 20:27 ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple, firestorm & icestorm compatibles Hector Martin
2021-03-08 20:27 ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 05/27] arm64: cputype: Add CPU implementor & types for the Apple M1 cores Hector Martin
2021-03-24 18:13 ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: Add interrupt-names support Hector Martin
2021-03-05 10:18 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Linus Walleij
2021-03-08 11:12 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Marc Zyngier
2021-03-08 17:14 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Tony Lindgren
2021-03-08 20:38 ` Rob Herring
2021-03-08 22:42 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Marc Zyngier
2021-03-09 16:11 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Rob Herring
2021-03-09 20:28 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 07/27] arm64: arch_timer: implement support for interrupt-names Hector Martin
2021-03-05 10:19 ` Linus Walleij
2021-03-08 11:13 ` Marc Zyngier
2021-03-04 21:38 ` [RFT PATCH v3 08/27] asm-generic/io.h: Add a non-posted variant of ioremap() Hector Martin
2021-03-05 14:45 ` Andy Shevchenko
2021-03-05 15:19 ` Hector Martin
2021-03-08 11:20 ` Marc Zyngier
2021-03-24 18:12 ` Will Deacon
2021-03-24 19:09 ` Arnd Bergmann
2021-03-25 14:07 ` Hector Martin
2021-03-25 14:49 ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 09/27] docs: driver-api: device-io: Document I/O access functions Hector Martin
2021-03-05 10:22 ` Linus Walleij
2021-03-04 21:38 ` [RFT PATCH v3 10/27] docs: driver-api: device-io: Document ioremap() variants & access funcs Hector Martin
2021-03-05 10:25 ` Linus Walleij
2021-03-05 15:09 ` Andy Shevchenko
2021-03-05 15:51 ` Arnd Bergmann
2021-03-09 20:29 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 11/27] arm64: Implement ioremap_np() to map MMIO as nGnRnE Hector Martin
2021-03-08 11:22 ` Marc Zyngier
2021-03-24 18:18 ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 12/27] of/address: Add infrastructure to declare MMIO as non-posted Hector Martin
2021-03-05 10:28 ` Linus Walleij
2021-03-05 15:13 ` Andy Shevchenko
2021-03-05 15:55 ` Hector Martin
2021-03-05 16:08 ` Andy Shevchenko
2021-03-05 16:43 ` Arnd Bergmann
2021-03-05 17:19 ` Hector Martin
2021-03-05 16:05 ` Rob Herring
2021-03-05 17:39 ` Rob Herring
2021-03-05 18:18 ` Hector Martin
2021-03-05 21:17 ` Arnd Bergmann
2021-03-08 15:56 ` Rob Herring
2021-03-08 20:29 ` Arnd Bergmann
2021-03-08 21:13 ` Rob Herring
2021-03-08 21:56 ` Arnd Bergmann
2021-03-09 15:48 ` Rob Herring
2021-03-09 20:23 ` Hector Martin
2021-03-09 22:06 ` Rob Herring
2021-03-10 8:26 ` Hector Martin
2021-03-10 17:01 ` Rob Herring
2021-03-11 9:12 ` Arnd Bergmann
2021-03-11 12:11 ` Hector Martin
2021-03-11 13:35 ` Arnd Bergmann
2021-03-11 16:07 ` Rob Herring
2021-03-11 16:48 ` Arnd Bergmann
2021-03-11 18:10 ` Rob Herring
2021-03-12 10:20 ` Arnd Bergmann
2021-03-09 11:14 ` Linus Walleij
2021-03-09 12:41 ` Arnd Bergmann
2021-03-09 15:40 ` Linus Walleij
2021-03-04 21:38 ` [RFT PATCH v3 13/27] arm64: Add Apple vendor-specific system registers Hector Martin
2021-03-24 18:38 ` Will Deacon
2021-03-24 18:59 ` Mark Rutland
2021-03-24 19:04 ` Will Deacon
2021-03-26 6:23 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 14/27] arm64: move ICH_ sysreg bits from arm-gic-v3.h to sysreg.h Hector Martin
2021-03-08 11:39 ` Marc Zyngier
2021-03-24 18:23 ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 15/27] dt-bindings: interrupt-controller: Add DT bindings for apple-aic Hector Martin
2021-03-08 21:16 ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 16/27] irqchip/apple-aic: Add support for the Apple Interrupt Controller Hector Martin
2021-03-05 15:05 ` Andy Shevchenko
2021-03-08 11:50 ` Marc Zyngier
2021-03-08 12:02 ` Andy Shevchenko
2021-03-26 13:40 ` Hector Martin
2021-03-08 13:31 ` Marc Zyngier
2021-03-26 7:57 ` Hector Martin
2021-03-24 19:57 ` Will Deacon
2021-03-26 8:58 ` Hector Martin
2021-03-29 12:04 ` Will Deacon
2021-04-01 13:16 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 17/27] arm64: Kconfig: Introduce CONFIG_ARCH_APPLE Hector Martin
2021-03-08 15:35 ` Marc Zyngier
2021-03-09 20:30 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 18/27] tty: serial: samsung_tty: Separate S3C64XX ops structure Hector Martin
2021-03-05 10:30 ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 19/27] tty: serial: samsung_tty: Add ucon_mask parameter Hector Martin
2021-03-05 10:34 ` Krzysztof Kozlowski
2021-03-04 21:38 ` Hector Martin [this message]
2021-03-05 10:49 ` [RFT PATCH v3 20/27] tty: serial: samsung_tty: Add s3c24xx_port_type Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 21/27] tty: serial: samsung_tty: IRQ rework Hector Martin
2021-03-05 10:51 ` Krzysztof Kozlowski
2021-03-05 15:17 ` Andy Shevchenko
2021-03-05 16:16 ` Hector Martin
2021-03-05 16:20 ` Andy Shevchenko
2021-03-05 16:29 ` Hector Martin
2021-03-07 11:34 ` Krzysztof Kozlowski
2021-03-07 16:01 ` Arnd Bergmann
2021-03-07 19:51 ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 22/27] tty: serial: samsung_tty: Use devm_ioremap_resource Hector Martin
2021-03-05 10:54 ` Krzysztof Kozlowski
2021-03-05 15:19 ` Andy Shevchenko
2021-03-04 21:38 ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple, s5l-uart compatible Hector Martin
2021-03-08 21:17 ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple,s5l-uart compatible Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 24/27] tty: serial: samsung_tty: Add support for Apple UARTs Hector Martin
2021-03-05 10:58 ` Krzysztof Kozlowski
2021-03-05 15:28 ` Andy Shevchenko
2021-03-05 17:04 ` Hector Martin
2021-03-07 11:40 ` Krzysztof Kozlowski
2021-03-04 21:39 ` [RFT PATCH v3 25/27] tty: serial: samsung_tty: Add earlycon " Hector Martin
2021-03-05 10:55 ` Krzysztof Kozlowski
2021-03-10 23:11 ` Linus Walleij
2021-03-04 21:39 ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple, simple-framebuffer Hector Martin
2021-03-08 21:18 ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Rob Herring
2021-03-09 16:37 ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple, simple-framebuffer Linus Walleij
2021-03-09 20:35 ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Hector Martin
2021-03-04 21:39 ` [RFT PATCH v3 27/27] arm64: apple: Add initial Apple Mac mini (M1, 2020) devicetree Hector Martin
2021-03-05 11:03 ` Krzysztof Kozlowski
2021-03-05 11:14 ` Hector Martin
2021-03-05 11:45 ` Krzysztof Kozlowski
2021-03-05 15:59 ` Mark Kettenis
2021-03-05 16:50 ` Hector Martin
2021-03-13 20:22 ` Konrad Dybcio
2021-04-05 5:50 ` Hector Martin
2021-04-06 7:14 ` Arnd Bergmann
2021-03-05 10:11 ` [RFT PATCH v3 00/27] Apple M1 SoC platform bring-up Hector Martin
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