Merge master.kernel.org:/home/rmk/linux-2.6-serial

* master.kernel.org:/home/rmk/linux-2.6-serial:
  [SERIAL] Provide Cirrus EP93xx AMBA PL010 serial support.
  [SERIAL] amba-pl010: allow platforms to specify modem control method
  [SERIAL] Remove obsoleted au1x00_uart driver
  [SERIAL] Small time UART configuration fix for AU1100 processor

arch/arm/mach-ep93xx/core.c

@@ -30,7 +30,9 @@
 #include <linux/time.h>
 #include <linux/timex.h>
 #include <linux/delay.h>
+#include <linux/termios.h>
 #include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -360,6 +362,68 @@ void __init ep93xx_init_irq(void)
 /*************************************************************************
  * EP93xx peripheral handling
  *************************************************************************/
+#define EP93XX_UART_MCR_OFFSET		(0x0100)
+
+static void ep93xx_uart_set_mctrl(struct amba_device *dev,
+				  void __iomem *base, unsigned int mctrl)
+{
+	unsigned int mcr;
+
+	mcr = 0;
+	if (!(mctrl & TIOCM_RTS))
+		mcr |= 2;
+	if (!(mctrl & TIOCM_DTR))
+		mcr |= 1;
+
+	__raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET);
+}
+
+static struct amba_pl010_data ep93xx_uart_data = {
+	.set_mctrl	= ep93xx_uart_set_mctrl,
+};
+
+static struct amba_device uart1_device = {
+	.dev		= {
+		.bus_id		= "apb:uart1",
+		.platform_data	= &ep93xx_uart_data,
+	},
+	.res		= {
+		.start	= EP93XX_UART1_PHYS_BASE,
+		.end	= EP93XX_UART1_PHYS_BASE + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	.irq		= { IRQ_EP93XX_UART1, NO_IRQ },
+	.periphid	= 0x00041010,
+};
+
+static struct amba_device uart2_device = {
+	.dev		= {
+		.bus_id		= "apb:uart2",
+		.platform_data	= &ep93xx_uart_data,
+	},
+	.res		= {
+		.start	= EP93XX_UART2_PHYS_BASE,
+		.end	= EP93XX_UART2_PHYS_BASE + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	.irq		= { IRQ_EP93XX_UART2, NO_IRQ },
+	.periphid	= 0x00041010,
+};
+
+static struct amba_device uart3_device = {
+	.dev		= {
+		.bus_id		= "apb:uart3",
+		.platform_data	= &ep93xx_uart_data,
+	},
+	.res		= {
+		.start	= EP93XX_UART3_PHYS_BASE,
+		.end	= EP93XX_UART3_PHYS_BASE + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	.irq		= { IRQ_EP93XX_UART3, NO_IRQ },
+	.periphid	= 0x00041010,
+};
+
 void __init ep93xx_init_devices(void)
 {
 	unsigned int v;
@@ -371,4 +435,8 @@ void __init ep93xx_init_devices(void)
 	v &= ~EP93XX_SYSCON_DEVICE_CONFIG_CRUNCH_ENABLE;
 	__raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
 	__raw_writel(v, EP93XX_SYSCON_DEVICE_CONFIG);
+
+	amba_device_register(&uart1_device, &iomem_resource);
+	amba_device_register(&uart2_device, &iomem_resource);
+	amba_device_register(&uart3_device, &iomem_resource);
 }

arch/arm/mach-integrator/core.c

@@ -15,7 +15,9 @@
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
+#include <linux/termios.h>
 #include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
 
 #include <asm/hardware.h>
 #include <asm/irq.h>
@@ -28,6 +30,8 @@
 
 #include "common.h"
 
+static struct amba_pl010_data integrator_uart_data;
+
 static struct amba_device rtc_device = {
 	.dev		= {
 		.bus_id	= "mb:15",
@@ -44,6 +48,7 @@ static struct amba_device rtc_device = {
 static struct amba_device uart0_device = {
 	.dev		= {
 		.bus_id	= "mb:16",
+		.platform_data = &integrator_uart_data,
 	},
 	.res		= {
 		.start	= INTEGRATOR_UART0_BASE,
@@ -57,6 +62,7 @@ static struct amba_device uart0_device = {
 static struct amba_device uart1_device = {
 	.dev		= {
 		.bus_id	= "mb:17",
+		.platform_data = &integrator_uart_data,
 	},
 	.res		= {
 		.start	= INTEGRATOR_UART1_BASE,
@@ -115,6 +121,46 @@ static int __init integrator_init(void)
 
 arch_initcall(integrator_init);
 
+/*
+ * On the Integrator platform, the port RTS and DTR are provided by
+ * bits in the following SC_CTRLS register bits:
+ *        RTS  DTR
+ *  UART0  7    6
+ *  UART1  5    4
+ */
+#define SC_CTRLC	(IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLC_OFFSET)
+#define SC_CTRLS	(IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLS_OFFSET)
+
+static void integrator_uart_set_mctrl(struct amba_device *dev, void __iomem *base, unsigned int mctrl)
+{
+	unsigned int ctrls = 0, ctrlc = 0, rts_mask, dtr_mask;
+
+	if (dev == &uart0_device) {
+		rts_mask = 1 << 4;
+		dtr_mask = 1 << 5;
+	} else {
+		rts_mask = 1 << 6;
+		dtr_mask = 1 << 7;
+	}
+
+	if (mctrl & TIOCM_RTS)
+		ctrlc |= rts_mask;
+	else
+		ctrls |= rts_mask;
+
+	if (mctrl & TIOCM_DTR)
+		ctrlc |= dtr_mask;
+	else
+		ctrls |= dtr_mask;
+
+	__raw_writel(ctrls, SC_CTRLS);
+	__raw_writel(ctrlc, SC_CTRLC);
+}
+
+static struct amba_pl010_data integrator_uart_data = {
+	.set_mctrl = integrator_uart_set_mctrl,
+};
+
 #define CM_CTRL	IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_CTRL_OFFSET
 
 static DEFINE_SPINLOCK(cm_lock);

arch/mips/au1000/common/setup.c

@@ -94,7 +94,7 @@ void __init plat_setup(void)
 
 	argptr = prom_getcmdline();
 
-#if defined(CONFIG_SERIAL_AU1X00_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE)
+#ifdef CONFIG_SERIAL_8250_CONSOLE
 	if ((argptr = strstr(argptr, "console=")) == NULL) {
 		argptr = prom_getcmdline();
 		strcat(argptr, " console=ttyS0,115200");

drivers/serial/8250_au1x00.c

@@ -51,7 +51,7 @@ static struct plat_serial8250_port au1x00_data[] = {
 #elif defined(CONFIG_SOC_AU1100)
 	PORT(UART0_ADDR, AU1100_UART0_INT),
 	PORT(UART1_ADDR, AU1100_UART1_INT),
-	PORT(UART2_ADDR, AU1100_UART2_INT),
+	/* The internal UART2 does not exist on the AU1100 processor. */
 	PORT(UART3_ADDR, AU1100_UART3_INT),
 #elif defined(CONFIG_SOC_AU1550)
 	PORT(UART0_ADDR, AU1550_UART0_INT),

drivers/serial/Kconfig

@@ -620,22 +620,6 @@ config SERIAL_SH_SCI_CONSOLE
 	depends on SERIAL_SH_SCI=y
 	select SERIAL_CORE_CONSOLE
 
-config SERIAL_AU1X00
-	bool "Enable Au1x00 UART Support"
-	depends on MIPS && SOC_AU1X00
-	select SERIAL_CORE
-	help
-	  If you have an Alchemy AU1X00 processor (MIPS based) and you want
-	  to use serial ports, say Y.  Otherwise, say N.
-
-config SERIAL_AU1X00_CONSOLE
-	bool "Enable Au1x00 serial console"
-	depends on SERIAL_AU1X00
-	select SERIAL_CORE_CONSOLE
-	help
-	  If you have an Alchemy AU1X00 processor (MIPS based) and you want
-	  to use a console on a serial port, say Y.  Otherwise, say N.
-
 config SERIAL_CORE
 	tristate
 

drivers/serial/Makefile

@@ -41,7 +41,6 @@ obj-$(CONFIG_SERIAL_COLDFIRE) += mcfserial.o
 obj-$(CONFIG_V850E_UART) += v850e_uart.o
 obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o
 obj-$(CONFIG_SERIAL_LH7A40X) += serial_lh7a40x.o
-obj-$(CONFIG_SERIAL_AU1X00) += au1x00_uart.o
 obj-$(CONFIG_SERIAL_DZ) += dz.o
 obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o
 obj-$(CONFIG_SERIAL_SGI_L1_CONSOLE) += sn_console.o

drivers/serial/amba-pl010.c

@@ -51,8 +51,6 @@
 #include <linux/amba/serial.h>
 
 #include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/hardware.h>
 
 #define UART_NR		2
 
@@ -65,26 +63,16 @@
 #define UART_RX_DATA(s)		(((s) & UART01x_FR_RXFE) == 0)
 #define UART_TX_READY(s)	(((s) & UART01x_FR_TXFF) == 0)
 
-#define UART_DUMMY_RSR_RX	/*256*/0
+#define UART_DUMMY_RSR_RX	256
 #define UART_PORT_SIZE		64
 
-/*
- * On the Integrator platform, the port RTS and DTR are provided by
- * bits in the following SC_CTRLS register bits:
- *        RTS  DTR
- *  UART0  7    6
- *  UART1  5    4
- */
-#define SC_CTRLC	(IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLC_OFFSET)
-#define SC_CTRLS	(IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLS_OFFSET)
-
 /*
  * We wrap our port structure around the generic uart_port.
  */
 struct uart_amba_port {
 	struct uart_port	port;
-	unsigned int		dtr_mask;
-	unsigned int		rts_mask;
+	struct amba_device	*dev;
+	struct amba_pl010_data	*data;
 	unsigned int		old_status;
 };
 
@@ -300,20 +288,9 @@ static unsigned int pl010_get_mctrl(struct uart_port *port)
 static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int ctrls = 0, ctrlc = 0;
 
-	if (mctrl & TIOCM_RTS)
-		ctrlc |= uap->rts_mask;
-	else
-		ctrls |= uap->rts_mask;
-
-	if (mctrl & TIOCM_DTR)
-		ctrlc |= uap->dtr_mask;
-	else
-		ctrls |= uap->dtr_mask;
-
-	__raw_writel(ctrls, SC_CTRLS);
-	__raw_writel(ctrlc, SC_CTRLC);
+	if (uap->data)
+		uap->data->set_mctrl(uap->dev, uap->port.membase, mctrl);
 }
 
 static void pl010_break_ctl(struct uart_port *port, int break_state)
@@ -539,38 +516,7 @@ static struct uart_ops amba_pl010_pops = {
 	.verify_port	= pl010_verify_port,
 };
 
-static struct uart_amba_port amba_ports[UART_NR] = {
-	{
-		.port	= {
-			.membase	= (void *)IO_ADDRESS(INTEGRATOR_UART0_BASE),
-			.mapbase	= INTEGRATOR_UART0_BASE,
-			.iotype		= UPIO_MEM,
-			.irq		= IRQ_UARTINT0,
-			.uartclk	= 14745600,
-			.fifosize	= 16,
-			.ops		= &amba_pl010_pops,
-			.flags		= UPF_BOOT_AUTOCONF,
-			.line		= 0,
-		},
-		.dtr_mask	= 1 << 5,
-		.rts_mask	= 1 << 4,
-	},
-	{
-		.port	= {
-			.membase	= (void *)IO_ADDRESS(INTEGRATOR_UART1_BASE),
-			.mapbase	= INTEGRATOR_UART1_BASE,
-			.iotype		= UPIO_MEM,
-			.irq		= IRQ_UARTINT1,
-			.uartclk	= 14745600,
-			.fifosize	= 16,
-			.ops		= &amba_pl010_pops,
-			.flags		= UPF_BOOT_AUTOCONF,
-			.line		= 1,
-		},
-		.dtr_mask	= 1 << 7,
-		.rts_mask	= 1 << 6,
-	}
-};
+static struct uart_amba_port *amba_ports[UART_NR];
 
 #ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
 
@@ -588,7 +534,7 @@ static void pl010_console_putchar(struct uart_port *port, int ch)
 static void
 pl010_console_write(struct console *co, const char *s, unsigned int count)
 {
-	struct uart_port *port = &amba_ports[co->index].port;
+	struct uart_port *port = &amba_ports[co->index]->port;
 	unsigned int status, old_cr;
 
 	/*
@@ -651,7 +597,7 @@ static int __init pl010_console_setup(struct console *co, char *options)
 	 */
 	if (co->index >= UART_NR)
 		co->index = 0;
-	port = &amba_ports[co->index].port;
+	port = &amba_ports[co->index]->port;
 
 	if (options)
 		uart_parse_options(options, &baud, &parity, &bits, &flow);
@@ -672,24 +618,6 @@ static struct console amba_console = {
 	.data		= &amba_reg,
 };
 
-static int __init amba_console_init(void)
-{
-	/*
-	 * All port initializations are done statically
-	 */
-	register_console(&amba_console);
-	return 0;
-}
-console_initcall(amba_console_init);
-
-static int __init amba_late_console_init(void)
-{
-	if (!(amba_console.flags & CON_ENABLED))
-		register_console(&amba_console);
-	return 0;
-}
-late_initcall(amba_late_console_init);
-
 #define AMBA_CONSOLE	&amba_console
 #else
 #define AMBA_CONSOLE	NULL
@@ -707,30 +635,76 @@ static struct uart_driver amba_reg = {
 
 static int pl010_probe(struct amba_device *dev, void *id)
 {
-	int i;
+	struct uart_amba_port *port;
+	void __iomem *base;
+	int i, ret;
 
-	for (i = 0; i < UART_NR; i++) {
-		if (amba_ports[i].port.mapbase != dev->res.start)
-			continue;
-
-		amba_ports[i].port.dev = &dev->dev;
-		uart_add_one_port(&amba_reg, &amba_ports[i].port);
-		amba_set_drvdata(dev, &amba_ports[i]);
+	for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
+		if (amba_ports[i] == NULL)
 			break;
+
+	if (i == ARRAY_SIZE(amba_ports)) {
+		ret = -EBUSY;
+		goto out;
 	}
 
-	return 0;
+	port = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
+	if (!port) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	base = ioremap(dev->res.start, PAGE_SIZE);
+	if (!base) {
+		ret = -ENOMEM;
+		goto free;
+	}
+
+	port->port.dev = &dev->dev;
+	port->port.mapbase = dev->res.start;
+	port->port.membase = base;
+	port->port.iotype = UPIO_MEM;
+	port->port.irq = dev->irq[0];
+	port->port.uartclk = 14745600;
+	port->port.fifosize = 16;
+	port->port.ops = &amba_pl010_pops;
+	port->port.flags = UPF_BOOT_AUTOCONF;
+	port->port.line = i;
+	port->dev = dev;
+	port->data = dev->dev.platform_data;
+
+	amba_ports[i] = port;
+
+	amba_set_drvdata(dev, port);
+	ret = uart_add_one_port(&amba_reg, &port->port);
+	if (ret) {
+		amba_set_drvdata(dev, NULL);
+		amba_ports[i] = NULL;
+		iounmap(base);
+ free:
+		kfree(port);
+	}
+
+ out:
+	return ret;
 }
 
 static int pl010_remove(struct amba_device *dev)
 {
-	struct uart_amba_port *uap = amba_get_drvdata(dev);
-
-	if (uap)
-		uart_remove_one_port(&amba_reg, &uap->port);
+	struct uart_amba_port *port = amba_get_drvdata(dev);
+	int i;
 
 	amba_set_drvdata(dev, NULL);
 
+	uart_remove_one_port(&amba_reg, &port->port);
+
+	for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
+		if (amba_ports[i] == port)
+			amba_ports[i] = NULL;
+
+	iounmap(port->port.membase);
+	kfree(port);
+
 	return 0;
 }
 

include/asm-mips/serial.h

@@ -103,88 +103,6 @@
 #define IVR_SERIAL_PORT_DEFNS
 #endif
 
-#ifdef CONFIG_SERIAL_AU1X00
-#include <asm/mach-au1x00/au1000.h>
-#ifdef CONFIG_SOC_AU1000
-#define AU1000_SERIAL_PORT_DEFNS                       \
-    { .baud_base = 0, .port = UART0_ADDR,              \
-      .iomem_base = (unsigned char *)UART0_ADDR,       \
-      .irq = AU1000_UART0_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART1_ADDR,              \
-      .iomem_base = (unsigned char *)UART1_ADDR,       \
-      .irq = AU1000_UART1_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART2_ADDR,              \
-      .iomem_base = (unsigned char *)UART2_ADDR,       \
-      .irq = AU1000_UART2_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART3_ADDR,              \
-      .iomem_base = (unsigned char *)UART3_ADDR,       \
-      .irq = AU1000_UART3_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1500
-#define AU1000_SERIAL_PORT_DEFNS                       \
-    { .baud_base = 0, .port = UART0_ADDR,              \
-      .iomem_base = (unsigned char *)UART0_ADDR,       \
-      .irq = AU1500_UART0_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART3_ADDR,              \
-      .iomem_base = (unsigned char *)UART3_ADDR,       \
-      .irq = AU1500_UART3_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1100
-#define AU1000_SERIAL_PORT_DEFNS                       \
-    { .baud_base = 0, .port = UART0_ADDR,              \
-      .iomem_base = (unsigned char *)UART0_ADDR,       \
-      .irq = AU1100_UART0_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART1_ADDR,              \
-      .iomem_base = (unsigned char *)UART1_ADDR,       \
-      .irq = AU1100_UART1_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART3_ADDR,              \
-      .iomem_base = (unsigned char *)UART3_ADDR,       \
-      .irq = AU1100_UART3_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1550
-#define AU1000_SERIAL_PORT_DEFNS                       \
-    { .baud_base = 0, .port = UART0_ADDR,              \
-      .iomem_base = (unsigned char *)UART0_ADDR,       \
-      .irq = AU1550_UART0_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART1_ADDR,              \
-      .iomem_base = (unsigned char *)UART1_ADDR,       \
-      .irq = AU1550_UART1_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART3_ADDR,              \
-      .iomem_base = (unsigned char *)UART3_ADDR,       \
-      .irq = AU1550_UART3_INT,  .flags = STD_COM_FLAGS,\
-      .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1200
-#define AU1000_SERIAL_PORT_DEFNS                       \
-    { .baud_base = 0, .port = UART0_ADDR,              \
-      .iomem_base = (unsigned char *)UART0_ADDR,       \
-      .irq = AU1200_UART0_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },                          \
-    { .baud_base = 0, .port = UART1_ADDR,              \
-      .iomem_base = (unsigned char *)UART1_ADDR,       \
-      .irq = AU1200_UART1_INT, .flags = STD_COM_FLAGS, \
-      .iomem_reg_shift = 2 },
-#endif
-
-#else
-#define AU1000_SERIAL_PORT_DEFNS
-#endif
-
 #ifdef CONFIG_HAVE_STD_PC_SERIAL_PORT
 #define STD_SERIAL_PORT_DEFNS			\
 	/* UART CLK   PORT IRQ     FLAGS        */			\
@@ -331,7 +249,6 @@
 	MOMENCO_OCELOT_G_SERIAL_PORT_DEFNS		\
 	MOMENCO_OCELOT_C_SERIAL_PORT_DEFNS		\
 	MOMENCO_OCELOT_SERIAL_PORT_DEFNS		\
-	MOMENCO_OCELOT_3_SERIAL_PORT_DEFNS		\
-	AU1000_SERIAL_PORT_DEFNS
+	MOMENCO_OCELOT_3_SERIAL_PORT_DEFNS
 
 #endif /* _ASM_SERIAL_H */

include/linux/amba/serial.h

@@ -158,4 +158,10 @@
 #define UART01x_RSR_ANY		(UART01x_RSR_OE|UART01x_RSR_BE|UART01x_RSR_PE|UART01x_RSR_FE)
 #define UART01x_FR_MODEM_ANY	(UART01x_FR_DCD|UART01x_FR_DSR|UART01x_FR_CTS)
 
+#ifndef __ASSEMBLY__
+struct amba_pl010_data {
+	void (*set_mctrl)(struct amba_device *dev, void __iomem *base, unsigned int mctrl);
+};
+#endif
+
 #endif