mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-27 12:39:53 +02:00
218 lines
6.7 KiB
Diff
218 lines
6.7 KiB
Diff
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--- a/arch/arm/mach-ixp4xx/cambria-setup.c
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+++ b/arch/arm/mach-ixp4xx/cambria-setup.c
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@@ -34,6 +34,7 @@
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <asm/setup.h>
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+#include <linux/irq.h>
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struct cambria_board_info {
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unsigned char *model;
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@@ -127,6 +128,45 @@ static struct platform_device cambria_ua
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.resource = &cambria_uart_resource,
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};
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+static struct resource cambria_optional_uart_resources[] = {
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+ {
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+ .start = 0x52000000,
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+ .end = 0x52000fff,
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+ .flags = IORESOURCE_MEM
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+ },
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+ {
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+ .start = 0x53000000,
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+ .end = 0x53000fff,
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+ .flags = IORESOURCE_MEM
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+ }
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+};
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+
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+static struct plat_serial8250_port cambria_optional_uart_data[] = {
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+ {
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+ .flags = UPF_BOOT_AUTOCONF,
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+ .iotype = UPIO_MEM_DELAY,
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+ .regshift = 0,
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+ .uartclk = 1843200,
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+ .rw_delay = 2,
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+ },
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+ {
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+ .flags = UPF_BOOT_AUTOCONF,
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+ .iotype = UPIO_MEM_DELAY,
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+ .regshift = 0,
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+ .uartclk = 1843200,
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+ .rw_delay = 2,
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+ },
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+ { },
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+};
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+
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+static struct platform_device cambria_optional_uart = {
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+ .name = "serial8250",
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+ .id = PLAT8250_DEV_PLATFORM1,
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+ .dev.platform_data = cambria_optional_uart_data,
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+ .num_resources = 2,
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+ .resource = cambria_optional_uart_resources,
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+};
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+
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static struct resource cambria_pata_resources[] = {
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{
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.flags = IORESOURCE_MEM
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@@ -283,6 +323,19 @@ static void __init cambria_gw23xx_setup(
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static void __init cambria_gw2350_setup(void)
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{
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+ *IXP4XX_EXP_CS2 = 0xBFFF3C43;
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+ set_irq_type(IRQ_IXP4XX_GPIO3, IRQ_TYPE_EDGE_RISING);
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+ cambria_optional_uart_data[0].mapbase = 0x52FF0000;
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+ cambria_optional_uart_data[0].membase = (void __iomem *)ioremap(0x52FF0000, 0x0fff);
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+ cambria_optional_uart_data[0].irq = IRQ_IXP4XX_GPIO3;
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+
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+ *IXP4XX_EXP_CS3 = 0xBFFF3C43;
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+ set_irq_type(IRQ_IXP4XX_GPIO4, IRQ_TYPE_EDGE_RISING);
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+ cambria_optional_uart_data[1].mapbase = 0x53FF0000;
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+ cambria_optional_uart_data[1].membase = (void __iomem *)ioremap(0x53FF0000, 0x0fff);
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+ cambria_optional_uart_data[1].irq = IRQ_IXP4XX_GPIO4;
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+
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+ platform_device_register(&cambria_optional_uart);
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platform_device_register(&cambria_npec_device);
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platform_device_register(&cambria_npea_device);
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@@ -294,6 +347,19 @@ static void __init cambria_gw2350_setup(
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static void __init cambria_gw2358_setup(void)
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{
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+ *IXP4XX_EXP_CS3 = 0xBFFF3C43;
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+ set_irq_type(IRQ_IXP4XX_GPIO3, IRQ_TYPE_EDGE_RISING);
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+ cambria_optional_uart_data[0].mapbase = 0x53FC0000;
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+ cambria_optional_uart_data[0].membase = (void __iomem *)ioremap(0x53FC0000, 0x0fff);
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+ cambria_optional_uart_data[0].irq = IRQ_IXP4XX_GPIO3;
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+
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+ set_irq_type(IRQ_IXP4XX_GPIO4, IRQ_TYPE_EDGE_RISING);
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+ cambria_optional_uart_data[1].mapbase = 0x53F80000;
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+ cambria_optional_uart_data[1].membase = (void __iomem *)ioremap(0x53F80000, 0x0fff);
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+ cambria_optional_uart_data[1].irq = IRQ_IXP4XX_GPIO4;
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+
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+ platform_device_register(&cambria_optional_uart);
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+
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platform_device_register(&cambria_npec_device);
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platform_device_register(&cambria_npea_device);
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--- a/include/linux/serial_8250.h
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+++ b/include/linux/serial_8250.h
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@@ -26,6 +26,7 @@ struct plat_serial8250_port {
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void *private_data;
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unsigned char regshift; /* register shift */
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unsigned char iotype; /* UPIO_* */
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+ unsigned int rw_delay; /* udelay for slower busses IXP4XX Expansion Bus */
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unsigned char hub6;
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upf_t flags; /* UPF_* flags */
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unsigned int type; /* If UPF_FIXED_TYPE */
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--- a/include/linux/serial_core.h
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+++ b/include/linux/serial_core.h
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@@ -280,6 +280,7 @@ struct uart_port {
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#define UPIO_TSI (5) /* Tsi108/109 type IO */
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#define UPIO_DWAPB (6) /* DesignWare APB UART */
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#define UPIO_RM9000 (7) /* RM9000 type IO */
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+#define UPIO_MEM_DELAY (8)
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unsigned int read_status_mask; /* driver specific */
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unsigned int ignore_status_mask; /* driver specific */
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@@ -322,6 +323,7 @@ struct uart_port {
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unsigned int mctrl; /* current modem ctrl settings */
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unsigned int timeout; /* character-based timeout */
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+ unsigned int rw_delay; /* udelay for slow busses, IXP4XX Expansion Bus */
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unsigned int type; /* port type */
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const struct uart_ops *ops;
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unsigned int custom_divisor;
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--- a/drivers/serial/8250.c
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+++ b/drivers/serial/8250.c
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@@ -404,6 +404,20 @@ static void mem_serial_out(struct uart_p
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writeb(value, p->membase + offset);
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}
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+static unsigned int memdelay_serial_in(struct uart_port *p, int offset)
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+{
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+ struct uart_8250_port *up = (struct uart_8250_port *)p;
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+ udelay(up->port.rw_delay);
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+ return mem_serial_in(p, offset);
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+}
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+
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+static void memdelay_serial_out(struct uart_port *p, int offset, int value)
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+{
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+ struct uart_8250_port *up = (struct uart_8250_port *)p;
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+ udelay(up->port.rw_delay);
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+ mem_serial_out(p, offset, value);
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+}
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+
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static void mem32_serial_out(struct uart_port *p, int offset, int value)
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{
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offset = map_8250_out_reg(p, offset) << p->regshift;
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@@ -497,6 +511,11 @@ static void set_io_from_upio(struct uart
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p->serial_out = mem32_serial_out;
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break;
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+ case UPIO_MEM_DELAY:
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+ p->serial_in = memdelay_serial_in;
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+ p->serial_out = memdelay_serial_out;
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+ break;
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+
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#ifdef CONFIG_SERIAL_8250_AU1X00
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case UPIO_AU:
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p->serial_in = au_serial_in;
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@@ -529,6 +548,7 @@ serial_out_sync(struct uart_8250_port *u
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switch (p->iotype) {
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case UPIO_MEM:
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case UPIO_MEM32:
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+ case UPIO_MEM_DELAY:
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#ifdef CONFIG_SERIAL_8250_AU1X00
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case UPIO_AU:
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#endif
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@@ -2447,6 +2467,7 @@ static int serial8250_request_std_resour
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case UPIO_MEM32:
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case UPIO_MEM:
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case UPIO_DWAPB:
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+ case UPIO_MEM_DELAY:
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if (!up->port.mapbase)
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break;
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@@ -2484,6 +2505,7 @@ static void serial8250_release_std_resou
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case UPIO_MEM32:
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case UPIO_MEM:
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case UPIO_DWAPB:
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+ case UPIO_MEM_DELAY:
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if (!up->port.mapbase)
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break;
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@@ -2953,6 +2975,7 @@ static int __devinit serial8250_probe(st
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port.serial_in = p->serial_in;
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port.serial_out = p->serial_out;
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port.dev = &dev->dev;
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+ port.rw_delay = p->rw_delay;
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if (share_irqs)
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port.flags |= UPF_SHARE_IRQ;
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ret = serial8250_register_port(&port);
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@@ -3102,6 +3125,7 @@ int serial8250_register_port(struct uart
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uart->port.iotype = port->iotype;
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uart->port.flags = port->flags | UPF_BOOT_AUTOCONF;
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uart->port.mapbase = port->mapbase;
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+ uart->port.rw_delay = port->rw_delay;
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uart->port.private_data = port->private_data;
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if (port->dev)
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uart->port.dev = port->dev;
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--- a/drivers/serial/serial_core.c
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+++ b/drivers/serial/serial_core.c
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@@ -2138,6 +2138,7 @@ uart_report_port(struct uart_driver *drv
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snprintf(address, sizeof(address),
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"I/O 0x%lx offset 0x%x", port->iobase, port->hub6);
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break;
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+ case UPIO_MEM_DELAY:
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case UPIO_MEM:
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case UPIO_MEM32:
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case UPIO_AU:
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@@ -2552,6 +2553,7 @@ int uart_match_port(struct uart_port *po
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case UPIO_HUB6:
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return (port1->iobase == port2->iobase) &&
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(port1->hub6 == port2->hub6);
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+ case UPIO_MEM_DELAY:
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case UPIO_MEM:
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case UPIO_MEM32:
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case UPIO_AU:
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