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-rw-r--r--arch/arm/mach-sa1100/collie.c72
1 files changed, 71 insertions, 1 deletions
diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index 10245408247..676b5c5b75b 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -11,7 +11,8 @@
* published by the Free Software Foundation.
*
* ChangeLog:
- * 03-06-2004 John Lenz <jelenz@wisc.edu>
+ * 2006 Pavel Machek <pavel@suse.cz>
+ * 03-06-2004 John Lenz <lenz@cs.wisc.edu>
* 06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
* 04-16-2001 Lineo Japan,Inc. ...
*/
@@ -87,12 +88,75 @@ static struct mcp_plat_data collie_mcp_data = {
.sclk_rate = 11981000,
};
+#ifdef CONFIG_SHARP_LOCOMO
+/*
+ * low-level UART features.
+ */
+static struct locomo_dev *uart_dev = NULL;
+
+static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
+{
+ if (!uart_dev) return;
+
+ if (mctrl & TIOCM_RTS)
+ locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 0);
+ else
+ locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 1);
+
+ if (mctrl & TIOCM_DTR)
+ locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 0);
+ else
+ locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 1);
+}
+
+static u_int collie_uart_get_mctrl(struct uart_port *port)
+{
+ int ret = TIOCM_CD;
+ unsigned int r;
+ if (!uart_dev) return ret;
+
+ r = locomo_gpio_read_output(uart_dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
+ if (r & LOCOMO_GPIO_CTS)
+ ret |= TIOCM_CTS;
+ if (r & LOCOMO_GPIO_DSR)
+ ret |= TIOCM_DSR;
+
+ return ret;
+}
static struct sa1100_port_fns collie_port_fns __initdata = {
.set_mctrl = collie_uart_set_mctrl,
.get_mctrl = collie_uart_get_mctrl,
};
+static int collie_uart_probe(struct locomo_dev *dev)
+{
+ uart_dev = dev;
+ return 0;
+}
+
+static int collie_uart_remove(struct locomo_dev *dev)
+{
+ uart_dev = NULL;
+ return 0;
+}
+
+static struct locomo_driver collie_uart_driver = {
+ .drv = {
+ .name = "collie_uart",
+ },
+ .devid = LOCOMO_DEVID_UART,
+ .probe = collie_uart_probe,
+ .remove = collie_uart_remove,
+};
+
+static int __init collie_uart_init(void) {
+ return locomo_driver_register(&collie_uart_driver);
+}
+device_initcall(collie_uart_init);
+
+#endif
+
static struct resource locomo_resources[] = {
[0] = {
@@ -218,6 +282,12 @@ static void __init collie_map_io(void)
{
sa1100_map_io();
iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
+
+#ifdef CONFIG_SHARP_LOCOMO
+ sa1100_register_uart_fns(&collie_port_fns);
+#endif
+ sa1100_register_uart(0, 3);
+ sa1100_register_uart(1, 1);
}
MACHINE_START(COLLIE, "Sharp-Collie")