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-rw-r--r--drivers/serial/8250.c16
-rw-r--r--drivers/serial/Kconfig31
-rw-r--r--drivers/serial/Makefile1
-rw-r--r--drivers/serial/amba-pl010.c15
-rw-r--r--drivers/serial/cpm_uart/cpm_uart_cpm2.c4
-rw-r--r--drivers/serial/imx.c2
-rw-r--r--drivers/serial/s3c2412.c1
-rw-r--r--drivers/serial/s5pv210.c154
-rw-r--r--drivers/serial/samsung.c8
-rw-r--r--drivers/serial/samsung.h19
-rw-r--r--drivers/serial/sh-sci.c137
-rw-r--r--drivers/serial/sh-sci.h43
-rw-r--r--drivers/serial/sunsab.c2
-rw-r--r--drivers/serial/uartlite.c10
14 files changed, 359 insertions, 84 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 7c4ebe6ee18b..c3db16b7afa1 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2408,6 +2408,21 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
}
static void
+serial8250_set_ldisc(struct uart_port *port)
+{
+ int line = port->line;
+
+ if (line >= port->state->port.tty->driver->num)
+ return;
+
+ if (port->state->port.tty->ldisc->ops->num == N_PPS) {
+ port->flags |= UPF_HARDPPS_CD;
+ serial8250_enable_ms(port);
+ } else
+ port->flags &= ~UPF_HARDPPS_CD;
+}
+
+static void
serial8250_pm(struct uart_port *port, unsigned int state,
unsigned int oldstate)
{
@@ -2628,6 +2643,7 @@ static struct uart_ops serial8250_pops = {
.startup = serial8250_startup,
.shutdown = serial8250_shutdown,
.set_termios = serial8250_set_termios,
+ .set_ldisc = serial8250_set_ldisc,
.pm = serial8250_pm,
.type = serial8250_type,
.release_port = serial8250_release_port,
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index d6ff73395623..f55c49475a8c 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -447,7 +447,7 @@ config SERIAL_CLPS711X_CONSOLE
config SERIAL_SAMSUNG
tristate "Samsung SoC serial support"
- depends on ARM && PLAT_S3C
+ depends on ARM && PLAT_SAMSUNG
select SERIAL_CORE
help
Support for the on-chip UARTs on the Samsung S3C24XX series CPUs,
@@ -455,11 +455,18 @@ config SERIAL_SAMSUNG
provide all of these ports, depending on how the serial port
pins are configured.
+config SERIAL_SAMSUNG_UARTS_4
+ bool
+ depends on ARM && PLAT_SAMSUNG
+ default y if CPU_S3C2443
+ help
+ Internal node for the common case of 4 Samsung compatible UARTs
+
config SERIAL_SAMSUNG_UARTS
int
- depends on ARM && PLAT_S3C
+ depends on ARM && PLAT_SAMSUNG
default 2 if ARCH_S3C2400
- default 4 if ARCH_S5PC1XX || ARCH_S3C64XX || CPU_S3C2443
+ default 4 if SERIAL_SAMSUNG_UARTS_4
default 3
help
Select the number of available UART ports for the Samsung S3C
@@ -526,20 +533,30 @@ config SERIAL_S3C24A0
Serial port support for the Samsung S3C24A0 SoC
config SERIAL_S3C6400
- tristate "Samsung S3C6400/S3C6410 Serial port support"
- depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410)
+ tristate "Samsung S3C6400/S3C6410/S5P6440 Seria port support"
+ depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410 || CPU_S5P6440)
+ select SERIAL_SAMSUNG_UARTS_4
default y
help
- Serial port support for the Samsung S3C6400 and S3C6410
+ Serial port support for the Samsung S3C6400, S3C6410 and S5P6440
SoCs
config SERIAL_S5PC100
tristate "Samsung S5PC100 Serial port support"
depends on SERIAL_SAMSUNG && CPU_S5PC100
+ select SERIAL_SAMSUNG_UARTS_4
default y
help
Serial port support for the Samsung S5PC100 SoCs
+config SERIAL_S5PV210
+ tristate "Samsung S5PV210 Serial port support"
+ depends on SERIAL_SAMSUNG && (CPU_S5PV210 || CPU_S5P6442)
+ select SERIAL_SAMSUNG_UARTS_4 if CPU_S5PV210
+ default y
+ help
+ Serial port support for Samsung's S5P Family of SoC's
+
config SERIAL_MAX3100
tristate "MAX3100 support"
depends on SPI
@@ -996,7 +1013,7 @@ config SERIAL_IP22_ZILOG_CONSOLE
config SERIAL_SH_SCI
tristate "SuperH SCI(F) serial port support"
- depends on HAVE_CLK && (SUPERH || H8300)
+ depends on HAVE_CLK && (SUPERH || H8300 || ARCH_SHMOBILE)
select SERIAL_CORE
config SERIAL_SH_SCI_NR_UARTS
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 5548fe7df61d..6aa4723b74ee 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -45,6 +45,7 @@ obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o
obj-$(CONFIG_SERIAL_S3C24A0) += s3c24a0.o
obj-$(CONFIG_SERIAL_S3C6400) += s3c6400.o
obj-$(CONFIG_SERIAL_S5PC100) += s3c6400.o
+obj-$(CONFIG_SERIAL_S5PV210) += s5pv210.o
obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
obj-$(CONFIG_SERIAL_MUX) += mux.o
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index 429a8ae86933..e4b3c2c88bb6 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -471,6 +471,20 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios,
spin_unlock_irqrestore(&uap->port.lock, flags);
}
+static void pl010_set_ldisc(struct uart_port *port)
+{
+ int line = port->line;
+
+ if (line >= port->state->port.tty->driver->num)
+ return;
+
+ if (port->state->port.tty->ldisc->ops->num == N_PPS) {
+ port->flags |= UPF_HARDPPS_CD;
+ pl010_enable_ms(port);
+ } else
+ port->flags &= ~UPF_HARDPPS_CD;
+}
+
static const char *pl010_type(struct uart_port *port)
{
return port->type == PORT_AMBA ? "AMBA" : NULL;
@@ -531,6 +545,7 @@ static struct uart_ops amba_pl010_pops = {
.startup = pl010_startup,
.shutdown = pl010_shutdown,
.set_termios = pl010_set_termios,
+ .set_ldisc = pl010_set_ldisc,
.type = pl010_type,
.release_port = pl010_release_port,
.request_port = pl010_request_port,
diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
index a9802e76b5fa..722eac18f382 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -61,7 +61,7 @@ void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
void __iomem *pram;
unsigned long offset;
struct resource res;
- unsigned long len;
+ resource_size_t len;
/* Don't remap parameter RAM if it has already been initialized
* during console setup.
@@ -74,7 +74,7 @@ void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
if (of_address_to_resource(np, 1, &res))
return NULL;
- len = 1 + res.end - res.start;
+ len = resource_size(&res);
pram = ioremap(res.start, len);
if (!pram)
return NULL;
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index d00fcf8e6c70..e579d7a1807a 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -440,7 +440,7 @@ static irqreturn_t imx_rxint(int irq, void *dev_id)
temp = readl(sport->port.membase + USR2);
if (temp & USR2_BRCD) {
- writel(temp | USR2_BRCD, sport->port.membase + USR2);
+ writel(USR2_BRCD, sport->port.membase + USR2);
if (uart_handle_break(&sport->port))
continue;
}
diff --git a/drivers/serial/s3c2412.c b/drivers/serial/s3c2412.c
index ce75e28e36ef..1700b1a2fb7e 100644
--- a/drivers/serial/s3c2412.c
+++ b/drivers/serial/s3c2412.c
@@ -102,6 +102,7 @@ static struct s3c24xx_uart_info s3c2412_uart_inf = {
.name = "Samsung S3C2412 UART",
.type = PORT_S3C2412,
.fifosize = 64,
+ .has_divslot = 1,
.rx_fifomask = S3C2440_UFSTAT_RXMASK,
.rx_fifoshift = S3C2440_UFSTAT_RXSHIFT,
.rx_fifofull = S3C2440_UFSTAT_RXFULL,
diff --git a/drivers/serial/s5pv210.c b/drivers/serial/s5pv210.c
new file mode 100644
index 000000000000..8dc03837617b
--- /dev/null
+++ b/drivers/serial/s5pv210.c
@@ -0,0 +1,154 @@
+/* linux/drivers/serial/s5pv210.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * Based on drivers/serial/s3c6400.c
+ *
+ * Driver for Samsung S5PV210 SoC UARTs.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+
+#include <asm/irq.h>
+#include <mach/hardware.h>
+#include <plat/regs-serial.h>
+#include "samsung.h"
+
+static int s5pv210_serial_setsource(struct uart_port *port,
+ struct s3c24xx_uart_clksrc *clk)
+{
+ unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+ if (strcmp(clk->name, "pclk") == 0)
+ ucon &= ~S5PV210_UCON_CLKMASK;
+ else if (strcmp(clk->name, "uclk1") == 0)
+ ucon |= S5PV210_UCON_CLKMASK;
+ else {
+ printk(KERN_ERR "unknown clock source %s\n", clk->name);
+ return -EINVAL;
+ }
+
+ wr_regl(port, S3C2410_UCON, ucon);
+ return 0;
+}
+
+
+static int s5pv210_serial_getsource(struct uart_port *port,
+ struct s3c24xx_uart_clksrc *clk)
+{
+ u32 ucon = rd_regl(port, S3C2410_UCON);
+
+ clk->divisor = 1;
+
+ switch (ucon & S5PV210_UCON_CLKMASK) {
+ case S5PV210_UCON_PCLK:
+ clk->name = "pclk";
+ break;
+ case S5PV210_UCON_UCLK:
+ clk->name = "uclk1";
+ break;
+ }
+
+ return 0;
+}
+
+static int s5pv210_serial_resetport(struct uart_port *port,
+ struct s3c2410_uartcfg *cfg)
+{
+ unsigned long ucon = rd_regl(port, S3C2410_UCON);
+
+ ucon &= S5PV210_UCON_CLKMASK;
+ wr_regl(port, S3C2410_UCON, ucon | cfg->ucon);
+ wr_regl(port, S3C2410_ULCON, cfg->ulcon);
+
+ /* reset both fifos */
+ wr_regl(port, S3C2410_UFCON, cfg->ufcon | S3C2410_UFCON_RESETBOTH);
+ wr_regl(port, S3C2410_UFCON, cfg->ufcon);
+
+ return 0;
+}
+
+#define S5PV210_UART_DEFAULT_INFO(fifo_size) \
+ .name = "Samsung S5PV210 UART0", \
+ .type = PORT_S3C6400, \
+ .fifosize = fifo_size, \
+ .has_divslot = 1, \
+ .rx_fifomask = S5PV210_UFSTAT_RXMASK, \
+ .rx_fifoshift = S5PV210_UFSTAT_RXSHIFT, \
+ .rx_fifofull = S5PV210_UFSTAT_RXFULL, \
+ .tx_fifofull = S5PV210_UFSTAT_TXFULL, \
+ .tx_fifomask = S5PV210_UFSTAT_TXMASK, \
+ .tx_fifoshift = S5PV210_UFSTAT_TXSHIFT, \
+ .get_clksrc = s5pv210_serial_getsource, \
+ .set_clksrc = s5pv210_serial_setsource, \
+ .reset_port = s5pv210_serial_resetport
+
+static struct s3c24xx_uart_info s5p_port_fifo256 = {
+ S5PV210_UART_DEFAULT_INFO(256),
+};
+
+static struct s3c24xx_uart_info s5p_port_fifo64 = {
+ S5PV210_UART_DEFAULT_INFO(64),
+};
+
+static struct s3c24xx_uart_info s5p_port_fifo16 = {
+ S5PV210_UART_DEFAULT_INFO(16),
+};
+
+static struct s3c24xx_uart_info *s5p_uart_inf[] = {
+ [0] = &s5p_port_fifo256,
+ [1] = &s5p_port_fifo64,
+ [2] = &s5p_port_fifo16,
+ [3] = &s5p_port_fifo16,
+};
+
+/* device management */
+static int s5p_serial_probe(struct platform_device *pdev)
+{
+ return s3c24xx_serial_probe(pdev, s5p_uart_inf[pdev->id]);
+}
+
+static struct platform_driver s5p_serial_drv = {
+ .probe = s5p_serial_probe,
+ .remove = __devexit_p(s3c24xx_serial_remove),
+ .driver = {
+ .name = "s5pv210-uart",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init s5pv210_serial_console_init(void)
+{
+ return s3c24xx_serial_initconsole(&s5p_serial_drv, s5p_uart_inf);
+}
+
+console_initcall(s5pv210_serial_console_init);
+
+static int __init s5p_serial_init(void)
+{
+ return s3c24xx_serial_init(&s5p_serial_drv, *s5p_uart_inf);
+}
+
+static void __exit s5p_serial_exit(void)
+{
+ platform_driver_unregister(&s5p_serial_drv);
+}
+
+module_init(s5p_serial_init);
+module_exit(s5p_serial_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:s5pv210-uart");
+MODULE_DESCRIPTION("Samsung S5PV210 UART Driver support");
+MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c
index 52e3df113ec0..a9d6c5626a0a 100644
--- a/drivers/serial/samsung.c
+++ b/drivers/serial/samsung.c
@@ -1271,7 +1271,7 @@ s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
unsigned long ufstat, utrstat;
if (ufcon & S3C2410_UFCON_FIFOMODE) {
- /* fifo mode - check ammount of data in fifo registers... */
+ /* fifo mode - check amount of data in fifo registers... */
ufstat = rd_regl(port, S3C2410_UFSTAT);
return (ufstat & info->tx_fifofull) ? 0 : 1;
@@ -1374,7 +1374,7 @@ s3c24xx_serial_get_options(struct uart_port *port, int *baud,
* data.
*/
-static int s3c24xx_serial_init_ports(struct s3c24xx_uart_info *info)
+static int s3c24xx_serial_init_ports(struct s3c24xx_uart_info **info)
{
struct s3c24xx_uart_port *ptr = s3c24xx_serial_ports;
struct platform_device **platdev_ptr;
@@ -1385,7 +1385,7 @@ static int s3c24xx_serial_init_ports(struct s3c24xx_uart_info *info)
platdev_ptr = s3c24xx_uart_devs;
for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++, ptr++, platdev_ptr++) {
- s3c24xx_serial_init_port(ptr, info, *platdev_ptr);
+ s3c24xx_serial_init_port(ptr, info[i], *platdev_ptr);
}
return 0;
@@ -1451,7 +1451,7 @@ static struct console s3c24xx_serial_console = {
};
int s3c24xx_serial_initconsole(struct platform_driver *drv,
- struct s3c24xx_uart_info *info)
+ struct s3c24xx_uart_info **info)
{
struct platform_device *dev = s3c24xx_uart_devs[0];
diff --git a/drivers/serial/samsung.h b/drivers/serial/samsung.h
index 1fb22343df42..0ac06a07d25f 100644
--- a/drivers/serial/samsung.h
+++ b/drivers/serial/samsung.h
@@ -75,19 +75,24 @@ extern int s3c24xx_serial_probe(struct platform_device *dev,
extern int __devexit s3c24xx_serial_remove(struct platform_device *dev);
extern int s3c24xx_serial_initconsole(struct platform_driver *drv,
- struct s3c24xx_uart_info *uart);
+ struct s3c24xx_uart_info **uart);
extern int s3c24xx_serial_init(struct platform_driver *drv,
struct s3c24xx_uart_info *info);
#ifdef CONFIG_SERIAL_SAMSUNG_CONSOLE
-#define s3c24xx_console_init(__drv, __inf) \
-static int __init s3c_serial_console_init(void) \
-{ \
- return s3c24xx_serial_initconsole(__drv, __inf); \
-} \
- \
+#define s3c24xx_console_init(__drv, __inf) \
+static int __init s3c_serial_console_init(void) \
+{ \
+ struct s3c24xx_uart_info *uinfo[CONFIG_SERIAL_SAMSUNG_UARTS]; \
+ int i; \
+ \
+ for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++) \
+ uinfo[i] = __inf; \
+ return s3c24xx_serial_initconsole(__drv, uinfo); \
+} \
+ \
console_initcall(s3c_serial_console_init)
#else
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 054a8427c739..291bc08e2e84 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -50,7 +50,6 @@
#include <linux/list.h>
#include <linux/dmaengine.h>
#include <linux/scatterlist.h>
-#include <linux/timer.h>
#ifdef CONFIG_SUPERH
#include <asm/sh_bios.h>
@@ -91,8 +90,8 @@ struct sci_port {
struct dma_chan *chan_rx;
#ifdef CONFIG_SERIAL_SH_SCI_DMA
struct device *dma_dev;
- enum sh_dmae_slave_chan_id slave_tx;
- enum sh_dmae_slave_chan_id slave_rx;
+ unsigned int slave_tx;
+ unsigned int slave_rx;
struct dma_async_tx_descriptor *desc_tx;
struct dma_async_tx_descriptor *desc_rx[2];
dma_cookie_t cookie_tx;
@@ -107,6 +106,7 @@ struct sci_port {
struct work_struct work_tx;
struct work_struct work_rx;
struct timer_list rx_timer;
+ unsigned int rx_timeout;
#endif
};
@@ -674,22 +674,22 @@ static irqreturn_t sci_rx_interrupt(int irq, void *ptr)
struct sci_port *s = to_sci_port(port);
if (s->chan_rx) {
- unsigned long tout;
u16 scr = sci_in(port, SCSCR);
u16 ssr = sci_in(port, SCxSR);
/* Disable future Rx interrupts */
- sci_out(port, SCSCR, scr & ~SCI_CTRL_FLAGS_RIE);
+ if (port->type == PORT_SCIFA) {
+ disable_irq_nosync(irq);
+ scr |= 0x4000;
+ } else {
+ scr &= ~SCI_CTRL_FLAGS_RIE;
+ }
+ sci_out(port, SCSCR, scr);
/* Clear current interrupt */
sci_out(port, SCxSR, ssr & ~(1 | SCxSR_RDxF(port)));
- /* Calculate delay for 1.5 DMA buffers */
- tout = (port->timeout - HZ / 50) * s->buf_len_rx * 3 /
- port->fifosize / 2;
- dev_dbg(port->dev, "Rx IRQ: setup timeout in %lu ms\n",
- tout * 1000 / HZ);
- if (tout < 2)
- tout = 2;
- mod_timer(&s->rx_timer, jiffies + tout);
+ dev_dbg(port->dev, "Rx IRQ %lu: setup t-out in %u jiffies\n",
+ jiffies, s->rx_timeout);
+ mod_timer(&s->rx_timer, jiffies + s->rx_timeout);
return IRQ_HANDLED;
}
@@ -780,10 +780,6 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
if ((ssr_status & SCxSR_BRK(port)) && err_enabled)
ret = sci_br_interrupt(irq, ptr);
- WARN_ONCE(ret == IRQ_NONE,
- "%s: %d IRQ %d, status %x, control %x\n", __func__,
- irq, port->line, ssr_status, scr_status);
-
return ret;
}
@@ -913,22 +909,26 @@ static void sci_dma_tx_complete(void *arg)
spin_lock_irqsave(&port->lock, flags);
- xmit->tail += s->sg_tx.length;
+ xmit->tail += sg_dma_len(&s->sg_tx);
xmit->tail &= UART_XMIT_SIZE - 1;
- port->icount.tx += s->sg_tx.length;
+ port->icount.tx += sg_dma_len(&s->sg_tx);
async_tx_ack(s->desc_tx);
s->cookie_tx = -EINVAL;
s->desc_tx = NULL;
- spin_unlock_irqrestore(&port->lock, flags);
-
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(port);
- if (uart_circ_chars_pending(xmit))
+ if (!uart_circ_empty(xmit)) {
schedule_work(&s->work_tx);
+ } else if (port->type == PORT_SCIFA) {
+ u16 ctrl = sci_in(port, SCSCR);
+ sci_out(port, SCSCR, ctrl & ~SCI_CTRL_FLAGS_TIE);
+ }
+
+ spin_unlock_irqrestore(&port->lock, flags);
}
/* Locking: called with port lock held */
@@ -972,13 +972,13 @@ static void sci_dma_rx_complete(void *arg)
unsigned long flags;
int count;
- dev_dbg(port->dev, "%s(%d)\n", __func__, port->line);
+ dev_dbg(port->dev, "%s(%d) active #%d\n", __func__, port->line, s->active_rx);
spin_lock_irqsave(&port->lock, flags);
count = sci_dma_rx_push(s, tty, s->buf_len_rx);
- mod_timer(&s->rx_timer, jiffies + msecs_to_jiffies(5));
+ mod_timer(&s->rx_timer, jiffies + s->rx_timeout);
spin_unlock_irqrestore(&port->lock, flags);
@@ -1050,6 +1050,8 @@ static void sci_submit_rx(struct sci_port *s)
sci_rx_dma_release(s, true);
return;
}
+ dev_dbg(s->port.dev, "%s(): cookie %d to #%d\n", __func__,
+ s->cookie_rx[i], i);
}
s->active_rx = s->cookie_rx[0];
@@ -1107,10 +1109,10 @@ static void work_fn_rx(struct work_struct *work)
return;
}
- dev_dbg(port->dev, "%s: cookie %d #%d\n", __func__,
- s->cookie_rx[new], new);
-
s->active_rx = s->cookie_rx[!new];
+
+ dev_dbg(port->dev, "%s: cookie %d #%d, new active #%d\n", __func__,
+ s->cookie_rx[new], new, s->active_rx);
}
static void work_fn_tx(struct work_struct *work)
@@ -1131,14 +1133,13 @@ static void work_fn_tx(struct work_struct *work)
*/
spin_lock_irq(&port->lock);
sg->offset = xmit->tail & (UART_XMIT_SIZE - 1);
- sg->dma_address = (sg_dma_address(sg) & ~(UART_XMIT_SIZE - 1)) +
+ sg_dma_address(sg) = (sg_dma_address(sg) & ~(UART_XMIT_SIZE - 1)) +
sg->offset;
- sg->length = min((int)CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE),
+ sg_dma_len(sg) = min((int)CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE),
CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE));
- sg->dma_length = sg->length;
spin_unlock_irq(&port->lock);
- BUG_ON(!sg->length);
+ BUG_ON(!sg_dma_len(sg));
desc = chan->device->device_prep_slave_sg(chan,
sg, s->sg_len_tx, DMA_TO_DEVICE,
@@ -1173,23 +1174,28 @@ static void work_fn_tx(struct work_struct *work)
static void sci_start_tx(struct uart_port *port)
{
+ struct sci_port *s = to_sci_port(port);
unsigned short ctrl;
#ifdef CONFIG_SERIAL_SH_SCI_DMA
- struct sci_port *s = to_sci_port(port);
-
- if (s->chan_tx) {
- if (!uart_circ_empty(&s->port.state->xmit) && s->cookie_tx < 0)
- schedule_work(&s->work_tx);
-
- return;
+ if (port->type == PORT_SCIFA) {
+ u16 new, scr = sci_in(port, SCSCR);
+ if (s->chan_tx)
+ new = scr | 0x8000;
+ else
+ new = scr & ~0x8000;
+ if (new != scr)
+ sci_out(port, SCSCR, new);
}
+ if (s->chan_tx && !uart_circ_empty(&s->port.state->xmit) &&
+ s->cookie_tx < 0)
+ schedule_work(&s->work_tx);
#endif
-
- /* Set TIE (Transmit Interrupt Enable) bit in SCSCR */
- ctrl = sci_in(port, SCSCR);
- ctrl |= SCI_CTRL_FLAGS_TIE;
- sci_out(port, SCSCR, ctrl);
+ if (!s->chan_tx || port->type == PORT_SCIFA) {
+ /* Set TIE (Transmit Interrupt Enable) bit in SCSCR */
+ ctrl = sci_in(port, SCSCR);
+ sci_out(port, SCSCR, ctrl | SCI_CTRL_FLAGS_TIE);
+ }
}
static void sci_stop_tx(struct uart_port *port)
@@ -1198,6 +1204,8 @@ static void sci_stop_tx(struct uart_port *port)
/* Clear TIE (Transmit Interrupt Enable) bit in SCSCR */
ctrl = sci_in(port, SCSCR);
+ if (port->type == PORT_SCIFA)
+ ctrl &= ~0x8000;
ctrl &= ~SCI_CTRL_FLAGS_TIE;
sci_out(port, SCSCR, ctrl);
}
@@ -1208,6 +1216,8 @@ static void sci_start_rx(struct uart_port *port)
/* Set RIE (Receive Interrupt Enable) bit in SCSCR */
ctrl |= sci_in(port, SCSCR);
+ if (port->type == PORT_SCIFA)
+ ctrl &= ~0x4000;
sci_out(port, SCSCR, ctrl);
}
@@ -1217,6 +1227,8 @@ static void sci_stop_rx(struct uart_port *port)
/* Clear RIE (Receive Interrupt Enable) bit in SCSCR */
ctrl = sci_in(port, SCSCR);
+ if (port->type == PORT_SCIFA)
+ ctrl &= ~0x4000;
ctrl &= ~(SCI_CTRL_FLAGS_RIE | SCI_CTRL_FLAGS_REIE);
sci_out(port, SCSCR, ctrl);
}
@@ -1251,8 +1263,12 @@ static void rx_timer_fn(unsigned long arg)
{
struct sci_port *s = (struct sci_port *)arg;
struct uart_port *port = &s->port;
-
u16 scr = sci_in(port, SCSCR);
+
+ if (port->type == PORT_SCIFA) {
+ scr &= ~0x4000;
+ enable_irq(s->irqs[1]);
+ }
sci_out(port, SCSCR, scr | SCI_CTRL_FLAGS_RIE);
dev_dbg(port->dev, "DMA Rx timed out\n");
schedule_work(&s->work_rx);
@@ -1339,8 +1355,7 @@ static void sci_request_dma(struct uart_port *port)
sg_init_table(sg, 1);
sg_set_page(sg, virt_to_page(buf[i]), s->buf_len_rx,
(int)buf[i] & ~PAGE_MASK);
- sg->dma_address = dma[i];
- sg->dma_length = sg->length;
+ sg_dma_address(sg) = dma[i];
}
INIT_WORK(&s->work_rx, work_fn_rx);
@@ -1403,8 +1418,12 @@ static void sci_shutdown(struct uart_port *port)
static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
+#ifdef CONFIG_SERIAL_SH_SCI_DMA
+ struct sci_port *s = to_sci_port(port);
+#endif
unsigned int status, baud, smr_val, max_baud;
int t = -1;
+ u16 scfcr = 0;
/*
* earlyprintk comes here early on with port->uartclk set to zero.
@@ -1427,7 +1446,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
sci_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */
if (port->type != PORT_SCI)
- sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
+ sci_out(port, SCFCR, scfcr | SCFCR_RFRST | SCFCR_TFRST);
smr_val = sci_in(port, SCSMR) & 3;
if ((termios->c_cflag & CSIZE) == CS7)
@@ -1458,10 +1477,32 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
}
sci_init_pins(port, termios->c_cflag);
- sci_out(port, SCFCR, (termios->c_cflag & CRTSCTS) ? SCFCR_MCE : 0);
+ sci_out(port, SCFCR, scfcr | ((termios->c_cflag & CRTSCTS) ? SCFCR_MCE : 0));
sci_out(port, SCSCR, SCSCR_INIT(port));
+#ifdef CONFIG_SERIAL_SH_SCI_DMA
+ /*
+ * Calculate delay for 1.5 DMA buffers: see
+ * drivers/serial/serial_core.c::uart_update_timeout(). With 10 bits
+ * (CS8), 250Hz, 115200 baud and 64 bytes FIFO, the above function
+ * calculates 1 jiffie for the data plus 5 jiffies for the "slop(e)."
+ * Then below we calculate 3 jiffies (12ms) for 1.5 DMA buffers (3 FIFO
+ * sizes), but it has been found out experimentally, that this is not
+ * enough: the driver too often needlessly runs on a DMA timeout. 20ms
+ * as a minimum seem to work perfectly.
+ */
+ if (s->chan_rx) {
+ s->rx_timeout = (port->timeout - HZ / 50) * s->buf_len_rx * 3 /
+ port->fifosize / 2;
+ dev_dbg(port->dev,
+ "DMA Rx t-out %ums, tty t-out %u jiffies\n",
+ s->rx_timeout * 1000 / HZ, port->timeout);
+ if (s->rx_timeout < msecs_to_jiffies(20))
+ s->rx_timeout = msecs_to_jiffies(20);
+ }
+#endif
+
if ((termios->c_cflag & CREAD) != 0)
sci_start_rx(port);
}
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index f7d2589926d2..f70c49f915fa 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -30,7 +30,10 @@
*/
# define SCSCR_INIT(port) (port->mapbase == SCIF2) ? 0xF3 : 0xF0
#elif defined(CONFIG_CPU_SUBTYPE_SH7720) || \
- defined(CONFIG_CPU_SUBTYPE_SH7721)
+ defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+ defined(CONFIG_ARCH_SH7367) || \
+ defined(CONFIG_ARCH_SH7377) || \
+ defined(CONFIG_ARCH_SH7372)
# define SCSCR_INIT(port) 0x0030 /* TIE=0,RIE=0,TE=1,RE=1 */
# define PORT_PTCR 0xA405011EUL
# define PORT_PVCR 0xA4050122UL
@@ -93,7 +96,9 @@
# define SCSCR_INIT(port) 0x0038 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
#elif defined(CONFIG_CPU_SUBTYPE_SH7724)
# define SCIF_ORER 0x0001 /* overrun error bit */
-# define SCSCR_INIT(port) 0x0038 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCSCR_INIT(port) ((port)->type == PORT_SCIFA ? \
+ 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */ : \
+ 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */ )
#elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
# define SCSPTR2 0xffe80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
@@ -196,6 +201,8 @@
defined(CONFIG_CPU_SUBTYPE_SH7786) || \
defined(CONFIG_CPU_SUBTYPE_SHX3)
#define SCI_CTRL_FLAGS_REIE 0x08 /* 7750 SCIF */
+#elif defined(CONFIG_CPU_SUBTYPE_SH7724)
+#define SCI_CTRL_FLAGS_REIE ((port)->type == PORT_SCIFA ? 0 : 8)
#else
#define SCI_CTRL_FLAGS_REIE 0
#endif
@@ -228,7 +235,10 @@
#if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
defined(CONFIG_CPU_SUBTYPE_SH7720) || \
- defined(CONFIG_CPU_SUBTYPE_SH7721)
+ defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+ defined(CONFIG_ARCH_SH7367) || \
+ defined(CONFIG_ARCH_SH7377) || \
+ defined(CONFIG_ARCH_SH7372)
# define SCIF_ORER 0x0200
# define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK | SCIF_ORER)
# define SCIF_RFDC_MASK 0x007f
@@ -261,7 +271,10 @@
#if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
defined(CONFIG_CPU_SUBTYPE_SH7720) || \
- defined(CONFIG_CPU_SUBTYPE_SH7721)
+ defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+ defined(CONFIG_ARCH_SH7367) || \
+ defined(CONFIG_ARCH_SH7377) || \
+ defined(CONFIG_ARCH_SH7372)
# define SCxSR_RDxF_CLEAR(port) (sci_in(port, SCxSR) & 0xfffc)
# define SCxSR_ERROR_CLEAR(port) (sci_in(port, SCxSR) & 0xfd73)
# define SCxSR_TDxE_CLEAR(port) (sci_in(port, SCxSR) & 0xffdf)
@@ -356,7 +369,10 @@
SCI_OUT(sci_size, sci_offset, value); \
}
-#ifdef CONFIG_CPU_SH3
+#if defined(CONFIG_CPU_SH3) || \
+ defined(CONFIG_ARCH_SH7367) || \
+ defined(CONFIG_ARCH_SH7377) || \
+ defined(CONFIG_ARCH_SH7372)
#if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
@@ -366,7 +382,10 @@
CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
#elif defined(CONFIG_CPU_SUBTYPE_SH7705) || \
defined(CONFIG_CPU_SUBTYPE_SH7720) || \
- defined(CONFIG_CPU_SUBTYPE_SH7721)
+ defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+ defined(CONFIG_ARCH_SH7367) || \
+ defined(CONFIG_ARCH_SH7377) || \
+ defined(CONFIG_ARCH_SH7372)
#define SCIF_FNS(name, scif_offset, scif_size) \
CPU_SCIF_FNS(name, scif_offset, scif_size)
#else
@@ -401,7 +420,10 @@
#if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
defined(CONFIG_CPU_SUBTYPE_SH7720) || \
- defined(CONFIG_CPU_SUBTYPE_SH7721)
+ defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+ defined(CONFIG_ARCH_SH7367) || \
+ defined(CONFIG_ARCH_SH7377) || \
+ defined(CONFIG_ARCH_SH7372)
SCIF_FNS(SCSMR, 0x00, 16)
SCIF_FNS(SCBRR, 0x04, 8)
@@ -413,7 +435,7 @@ SCIF_FNS(SCFCR, 0x18, 16)
SCIF_FNS(SCFDR, 0x1c, 16)
SCIF_FNS(SCxTDR, 0x20, 8)
SCIF_FNS(SCxRDR, 0x24, 8)
-SCIF_FNS(SCLSR, 0x24, 16)
+SCIF_FNS(SCLSR, 0x00, 0)
#elif defined(CONFIG_CPU_SUBTYPE_SH7723) ||\
defined(CONFIG_CPU_SUBTYPE_SH7724)
SCIx_FNS(SCSMR, 0x00, 16, 0x00, 16)
@@ -583,7 +605,10 @@ static inline int sci_rxd_in(struct uart_port *port)
#define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(16*bps)-1)
#elif defined(CONFIG_CPU_SUBTYPE_SH7705) || \
defined(CONFIG_CPU_SUBTYPE_SH7720) || \
- defined(CONFIG_CPU_SUBTYPE_SH7721)
+ defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+ defined(CONFIG_ARCH_SH7367) || \
+ defined(CONFIG_ARCH_SH7377) || \
+ defined(CONFIG_ARCH_SH7372)
#define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
#elif defined(CONFIG_CPU_SUBTYPE_SH7723) ||\
defined(CONFIG_CPU_SUBTYPE_SH7724)
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index d514e28d0755..d2e0321049e2 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -474,7 +474,7 @@ static void sunsab_stop_rx(struct uart_port *port)
{
struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
- up->interrupt_mask0 |= SAB82532_ISR0_TCD;
+ up->interrupt_mask0 |= SAB82532_IMR0_TCD;
writeb(up->interrupt_mask1, &up->regs->w.imr0);
}
diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c
index ab2ab3c81834..f0a6c61b17f7 100644
--- a/drivers/serial/uartlite.c
+++ b/drivers/serial/uartlite.c
@@ -19,7 +19,7 @@
#include <linux/interrupt.h>
#include <linux/init.h>
#include <asm/io.h>
-#if defined(CONFIG_OF)
+#if defined(CONFIG_OF) && (defined(CONFIG_PPC32) || defined(CONFIG_MICROBLAZE))
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
@@ -581,7 +581,7 @@ static struct platform_driver ulite_platform_driver = {
/* ---------------------------------------------------------------------
* OF bus bindings
*/
-#if defined(CONFIG_OF)
+#if defined(CONFIG_OF) && (defined(CONFIG_PPC32) || defined(CONFIG_MICROBLAZE))
static int __devinit
ulite_of_probe(struct of_device *op, const struct of_device_id *match)
{
@@ -631,11 +631,11 @@ static inline void __exit ulite_of_unregister(void)
{
of_unregister_platform_driver(&ulite_of_driver);
}
-#else /* CONFIG_OF */
-/* CONFIG_OF not enabled; do nothing helpers */
+#else /* CONFIG_OF && (CONFIG_PPC32 || CONFIG_MICROBLAZE) */
+/* Appropriate config not enabled; do nothing helpers */
static inline int __init ulite_of_register(void) { return 0; }
static inline void __exit ulite_of_unregister(void) { }
-#endif /* CONFIG_OF */
+#endif /* CONFIG_OF && (CONFIG_PPC32 || CONFIG_MICROBLAZE) */
/* ---------------------------------------------------------------------
* Module setup/teardown
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-25 04:03:47 +0100