add further fixes for the optional Cambria UART - thanks, Chris

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14243 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 94 insertions, 17 deletions

diff --git a/target/linux/ixp4xx/patches-2.6.28/191-cambria_optional_uart.patch b/target/linux/ixp4xx/patches-2.6.28/191-cambria_optional_uart.patch
index 946d685a19..e7531542b2 100644
--- a/target/linux/ixp4xx/patches-2.6.28/191-cambria_optional_uart.patch
+++ b/target/linux/ixp4xx/patches-2.6.28/191-cambria_optional_uart.patch
@@ -8,7 +8,7 @@
  
  struct cambria_board_info {
  	unsigned char	*model;
-@@ -127,6 +128,43 @@ static struct platform_device cambria_ua
+@@ -127,6 +128,45 @@ static struct platform_device cambria_ua
  	.resource	= &cambria_uart_resource,
  };
  
@@ -27,16 +27,18 @@
 +
 +static struct plat_serial8250_port cambria_optional_uart_data[] = {
 +	{
-+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_BUGGY_UART,
-+		.iotype		= UPIO_MEM,
++		.flags		= UPF_BOOT_AUTOCONF,
++		.iotype		= UPIO_MEM_DELAY,
 +		.regshift	= 0,
 +		.uartclk	= 1843200,
++		.rw_delay	= 2,
 +	},
 +	{
-+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_BUGGY_UART,
-+		.iotype		= UPIO_MEM,
++		.flags		= UPF_BOOT_AUTOCONF,
++		.iotype		= UPIO_MEM_DELAY,
 +		.regshift	= 0,
 +		.uartclk	= 1843200,
++		.rw_delay	= 2,
 +	},
 +  { },
 +};
@@ -52,17 +54,17 @@
  static struct resource cambria_pata_resources[] = {
  	{
  		.flags	= IORESOURCE_MEM
-@@ -283,6 +321,19 @@ static void __init cambria_gw23xx_setup(
+@@ -283,6 +323,19 @@ static void __init cambria_gw23xx_setup(
  
  static void __init cambria_gw2350_setup(void)
  {
-+	*IXP4XX_EXP_CS2 = 0xbfff0003;
++	*IXP4XX_EXP_CS2 = 0xBFFF3C43;
 +	set_irq_type(IRQ_IXP4XX_GPIO3, IRQ_TYPE_EDGE_RISING);
 +	cambria_optional_uart_data[0].mapbase	= 0x52FF0000;
 +	cambria_optional_uart_data[0].membase	= (void __iomem *)ioremap(0x52FF0000, 0x0fff);
 +	cambria_optional_uart_data[0].irq		= IRQ_IXP4XX_GPIO3;
 +
-+	*IXP4XX_EXP_CS3 = 0xbfff0003;
++	*IXP4XX_EXP_CS3 = 0xBFFF3C43;
 +	set_irq_type(IRQ_IXP4XX_GPIO4, IRQ_TYPE_EDGE_RISING);
 +	cambria_optional_uart_data[1].mapbase	= 0x53FF0000;
 +	cambria_optional_uart_data[1].membase	= (void __iomem *)ioremap(0x53FF0000, 0x0fff);
@@ -72,18 +74,11 @@
  	platform_device_register(&cambria_npec_device);
  	platform_device_register(&cambria_npea_device);
  
-@@ -290,10 +341,26 @@ static void __init cambria_gw2350_setup(
- 	platform_device_register(&cambria_usb1_device);
- 
- 	platform_device_register(&cambria_gpio_leds_device);
-+
-+	*IXP4XX_EXP_CS2 = 0xBFFF3C43;
-+	*IXP4XX_EXP_CS3 = 0xBFFF3C43;
- }
+@@ -294,6 +347,19 @@ static void __init cambria_gw2350_setup(
  
  static void __init cambria_gw2358_setup(void)
  {
-+	*IXP4XX_EXP_CS3 = 0xbfff0003;
++	*IXP4XX_EXP_CS3 = 0xBFFF3C433;
 +	set_irq_type(IRQ_IXP4XX_GPIO3, IRQ_TYPE_EDGE_RISING);
 +	cambria_optional_uart_data[0].mapbase	= 0x53FC0000;
 +	cambria_optional_uart_data[0].membase	= (void __iomem *)ioremap(0x53FC0000, 0x0fff);
@@ -99,3 +94,85 @@
  	platform_device_register(&cambria_npec_device);
  	platform_device_register(&cambria_npea_device);
  
+--- a/include/linux/serial_8250.h
++++ b/include/linux/serial_8250.h
+@@ -26,6 +26,7 @@ struct plat_serial8250_port {
+ 	void            *private_data;
+ 	unsigned char	regshift;	/* register shift */
+ 	unsigned char	iotype;		/* UPIO_* */
++	unsigned int rw_delay;	/* udelay for slower busses IXP4XX Expansion Bus */
+ 	unsigned char	hub6;
+ 	upf_t		flags;		/* UPF_* flags */
+ };
+--- a/include/linux/serial_core.h
++++ b/include/linux/serial_core.h
+@@ -262,6 +262,7 @@ struct uart_port {
+ #define UPIO_TSI		(5)			/* Tsi108/109 type IO */
+ #define UPIO_DWAPB		(6)			/* DesignWare APB UART */
+ #define UPIO_RM9000		(7)			/* RM9000 type IO */
++#define UPIO_MEM_DELAY	(8)
+ 
+ 	unsigned int		read_status_mask;	/* driver specific */
+ 	unsigned int		ignore_status_mask;	/* driver specific */
+@@ -301,6 +302,7 @@ struct uart_port {
+ 
+ 	unsigned int		mctrl;			/* current modem ctrl settings */
+ 	unsigned int		timeout;		/* character-based timeout */
++	unsigned int		rw_delay;		/* udelay for slow busses, IXP4XX Expansion Bus */
+ 	unsigned int		type;			/* port type */
+ 	const struct uart_ops	*ops;
+ 	unsigned int		custom_divisor;
+--- a/drivers/serial/8250.c
++++ b/drivers/serial/8250.c
+@@ -373,6 +373,8 @@ static unsigned int serial_in(struct uar
+ 		outb(up->port.hub6 - 1 + offset, up->port.iobase);
+ 		return inb(up->port.iobase + 1);
+ 
++	case UPIO_MEM_DELAY:
++		udelay(up->port.rw_delay);
+ 	case UPIO_MEM:
+ 	case UPIO_DWAPB:
+ 		return readb(up->port.membase + offset);
+@@ -411,6 +413,8 @@ serial_out(struct uart_8250_port *up, in
+ 		outb(value, up->port.iobase + 1);
+ 		break;
+ 
++	case UPIO_MEM_DELAY:
++		udelay(up->port.rw_delay);
+ 	case UPIO_MEM:
+ 		writeb(value, up->port.membase + offset);
+ 		break;
+@@ -2823,6 +2827,7 @@ static int __devinit serial8250_probe(st
+ 		port.hub6		= p->hub6;
+ 		port.private_data	= p->private_data;
+ 		port.dev		= &dev->dev;
++		port.rw_delay	= p->rw_delay;
+ 		if (share_irqs)
+ 			port.flags |= UPF_SHARE_IRQ;
+ 		ret = serial8250_register_port(&port);
+@@ -2972,6 +2977,7 @@ int serial8250_register_port(struct uart
+ 		uart->port.iotype       = port->iotype;
+ 		uart->port.flags        = port->flags | UPF_BOOT_AUTOCONF;
+ 		uart->port.mapbase      = port->mapbase;
++		uart->port.rw_delay			= port->rw_delay;
+ 		uart->port.private_data = port->private_data;
+ 		if (port->dev)
+ 			uart->port.dev = port->dev;
+--- a/drivers/serial/serial_core.c
++++ b/drivers/serial/serial_core.c
+@@ -2161,6 +2161,7 @@ uart_report_port(struct uart_driver *drv
+ 		snprintf(address, sizeof(address),
+ 			 "I/O 0x%lx offset 0x%x", port->iobase, port->hub6);
+ 		break;
++	case UPIO_MEM_DELAY:
+ 	case UPIO_MEM:
+ 	case UPIO_MEM32:
+ 	case UPIO_AU:
+@@ -2577,6 +2578,7 @@ int uart_match_port(struct uart_port *po
+ 	case UPIO_HUB6:
+ 		return (port1->iobase == port2->iobase) &&
+ 		       (port1->hub6   == port2->hub6);
++	case UPIO_MEM_DELAY:
+ 	case UPIO_MEM:
+ 	case UPIO_MEM32:
+ 	case UPIO_AU: