[ARM] Add rtc-cmos driver for ISA-based footbridge platforms

... but the rtc-cmos is rather broken; if PNP is enabled, it assumes that we have ACPI (!) which is quite bogus on these platforms - which may have ISAPNP but not ACPI. Something to be solved in the future. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

[ARM] Add rtc-cmos driver for ISA-based footbridge platforms
... but the rtc-cmos is rather broken; if PNP is enabled, it assumes that we have ACPI (!) which is quite bogus on these platforms - which may have ISAPNP but not ACPI. Something to be solved in the future. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King · Russell King
1 parent 883042d6ea
Showing 1 changed file with 44 additions and 1 deletions Side-by-side Diff
arch/arm/mach-footbridge/isa.c
@@ -12,6 +12,39 @@
  
 #include <asm/irq.h>
  
+static struct resource rtc_resources[] = {
+	[0] = {
+		.start	= 0x70,
+		.end	= 0x73,
+		.flags	= IORESOURCE_IO,
+	},
+	[1] = {
+		.start	= IRQ_ISA_RTC_ALARM,
+		.end	= IRQ_ISA_RTC_ALARM,
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device rtc_device = {
+	.name		= "rtc_cmos",
+	.id		= -1,
+	.resource	= rtc_resources,
+	.num_resources	= ARRAY_SIZE(rtc_resources),
+};
+
+static struct resource serial_resources[] = {
+	[0] = {
+		.start	= 0x3f8,
+		.end	= 0x3ff,
+		.flags	= IORESOURCE_IO,
+	},
+	[1] = {
+		.start	= 0x2f8,
+		.end	= 0x2ff,
+		.flags	= IORESOURCE_IO,
+	},
+};
+
 static struct plat_serial8250_port serial_platform_data[] = {
 	{
 		.iobase		= 0x3f8,
  
@@ -38,11 +71,21 @@
 	.dev			= {
 		.platform_data	= serial_platform_data,
 	},
+	.resource		= serial_resources,
+	.num_resources		= ARRAY_SIZE(serial_resources),
 };
  
 static int __init footbridge_isa_init(void)
 {
-	return platform_device_register(&serial_device);
+	int err;
+
+	err = platform_device_register(&rtc_device);
+	if (err)
+		printk(KERN_ERR "Unable to register RTC device: %d\n", err);
+	err = platform_device_register(&serial_device);
+	if (err)
+		printk(KERN_ERR "Unable to register serial device: %d\n", err);
+	return 0;
 }
  
 arch_initcall(footbridge_isa_init);
...	...	@@ -12,6 +12,39 @@
12	12
13	13	#include <asm/irq.h>
14	14
	15	+static struct resource rtc_resources[] = {
	16	+ [0] = {
	17	+ .start = 0x70,
	18	+ .end = 0x73,
	19	+ .flags = IORESOURCE_IO,
	20	+ },
	21	+ [1] = {
	22	+ .start = IRQ_ISA_RTC_ALARM,
	23	+ .end = IRQ_ISA_RTC_ALARM,
	24	+ .flags = IORESOURCE_IRQ,
	25	+ }
	26	+};
	27	+
	28	+static struct platform_device rtc_device = {
	29	+ .name = "rtc_cmos",
	30	+ .id = -1,
	31	+ .resource = rtc_resources,
	32	+ .num_resources = ARRAY_SIZE(rtc_resources),
	33	+};
	34	+
	35	+static struct resource serial_resources[] = {
	36	+ [0] = {
	37	+ .start = 0x3f8,
	38	+ .end = 0x3ff,
	39	+ .flags = IORESOURCE_IO,
	40	+ },
	41	+ [1] = {
	42	+ .start = 0x2f8,
	43	+ .end = 0x2ff,
	44	+ .flags = IORESOURCE_IO,
	45	+ },
	46	+};
	47	+
15	48	static struct plat_serial8250_port serial_platform_data[] = {
16	49	{
17	50	.iobase = 0x3f8,
18	51
...	...	@@ -38,11 +71,21 @@
38	71	.dev = {
39	72	.platform_data = serial_platform_data,
40	73	},
	74	+ .resource = serial_resources,
	75	+ .num_resources = ARRAY_SIZE(serial_resources),
41	76	};
42	77
43	78	static int __init footbridge_isa_init(void)
44	79	{
45		- return platform_device_register(&serial_device);
	80	+ int err;
	81	+
	82	+ err = platform_device_register(&rtc_device);
	83	+ if (err)
	84	+ printk(KERN_ERR "Unable to register RTC device: %d\n", err);
	85	+ err = platform_device_register(&serial_device);
	86	+ if (err)
	87	+ printk(KERN_ERR "Unable to register serial device: %d\n", err);
	88	+ return 0;
46	89	}
47	90
48	91	arch_initcall(footbridge_isa_init);