[ARM] 3557/1: S3C24XX: centralise and cleanup uart registration

Patch from Ben Dooks

All the S3C24XX based devices currently have similar
uart blocks, in the same location. Make the process
of adding new uart blocks easier by commonising the
device definitions and adding a new init function
for the cpu code.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

15 files changed, 154 insertions, 185 deletions

diff --git a/arch/arm/mach-s3c2410/cpu.c b/arch/arm/mach-s3c2410/cpu.c
index 987d34c9ea9..acc58adfbd2 100644
--- a/arch/arm/mach-s3c2410/cpu.c
+++ b/arch/arm/mach-s3c2410/cpu.c
@@ -37,8 +37,10 @@
 #include <asm/mach/map.h>
 
 #include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-serial.h>
 
 #include "cpu.h"
+#include "devs.h"
 #include "clock.h"
 #include "s3c2400.h"
 #include "s3c2410.h"
@@ -208,6 +210,49 @@ void __init s3c24xx_init_clocks(int xtal)
 		(cpu->init_clocks)(xtal);
 }
 
+/* uart management */
+
+static int nr_uarts __initdata = 0;
+
+static struct s3c2410_uartcfg uart_cfgs[3];
+
+/* s3c24xx_init_uartdevs
+ *
+ * copy the specified platform data and configuration into our central
+ * set of devices, before the data is thrown away after the init process.
+ *
+ * This also fills in the array passed to the serial driver for the
+ * early initialisation of the console.
+*/
+
+void __init s3c24xx_init_uartdevs(char *name,
+				  struct s3c24xx_uart_resources *res,
+				  struct s3c2410_uartcfg *cfg, int no)
+{
+	struct platform_device *platdev;
+	struct s3c2410_uartcfg *cfgptr = uart_cfgs;
+	struct s3c24xx_uart_resources *resp;
+	int uart;
+
+	memcpy(cfgptr, cfg, sizeof(struct s3c2410_uartcfg) * no);
+
+	for (uart = 0; uart < no; uart++, cfg++, cfgptr++) {
+		platdev = s3c24xx_uart_src[cfgptr->hwport];
+
+		resp = res + cfgptr->hwport;
+
+		s3c24xx_uart_devs[uart] = platdev;
+
+		platdev->name = name;
+		platdev->resource = resp->resources;
+		platdev->num_resources = resp->nr_resources;
+
+		platdev->dev.platform_data = cfgptr;
+	}
+
+	nr_uarts = no;
+}
+
 void __init s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 {
 	if (cpu == NULL)
@@ -232,6 +277,10 @@ static int __init s3c_arch_init(void)
 	if (ret != 0)
 		return ret;
 
+	ret = platform_add_devices(s3c24xx_uart_devs, nr_uarts);
+	if (ret != 0)
+		return ret;
+
 	if (board != NULL) {
 		struct platform_device **ptr = board->devices;
 		int i;
diff --git a/arch/arm/mach-s3c2410/cpu.h b/arch/arm/mach-s3c2410/cpu.h
index fc1067783f6..0c776acb063 100644
--- a/arch/arm/mach-s3c2410/cpu.h
+++ b/arch/arm/mach-s3c2410/cpu.h
@@ -31,6 +31,8 @@
 #define print_mhz(m) ((m) / MHZ), ((m / 1000) % 1000)
 
 /* forward declaration */
+struct s3c24xx_uart_resources;
+struct platform_device;
 struct s3c2410_uartcfg;
 struct map_desc;
 
@@ -44,6 +46,10 @@ extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);
 
 extern void s3c24xx_init_clocks(int xtal);
 
+extern void s3c24xx_init_uartdevs(char *name,
+				  struct s3c24xx_uart_resources *res,
+				  struct s3c2410_uartcfg *cfg, int no);
+
 /* the board structure is used at first initialsation time
  * to get info such as the devices to register for this
  * board. This is done because platfrom_add_devices() cannot
diff --git a/arch/arm/mach-s3c2410/devs.c b/arch/arm/mach-s3c2410/devs.c
index ca09ba516e4..ad3845e329b 100644
--- a/arch/arm/mach-s3c2410/devs.c
+++ b/arch/arm/mach-s3c2410/devs.c
@@ -38,10 +38,86 @@
 #include <asm/arch/regs-serial.h>
 
 #include "devs.h"
+#include "cpu.h"
 
 /* Serial port registrations */
 
-struct platform_device *s3c24xx_uart_devs[3];
+static struct resource s3c2410_uart0_resource[] = {
+	[0] = {
+		.start = S3C2410_PA_UART0,
+		.end   = S3C2410_PA_UART0 + 0x3fff,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = IRQ_S3CUART_RX0,
+		.end   = IRQ_S3CUART_ERR0,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource s3c2410_uart1_resource[] = {
+	[0] = {
+		.start = S3C2410_PA_UART1,
+		.end   = S3C2410_PA_UART1 + 0x3fff,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = IRQ_S3CUART_RX1,
+		.end   = IRQ_S3CUART_ERR1,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource s3c2410_uart2_resource[] = {
+	[0] = {
+		.start = S3C2410_PA_UART2,
+		.end   = S3C2410_PA_UART2 + 0x3fff,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = IRQ_S3CUART_RX2,
+		.end   = IRQ_S3CUART_ERR2,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+struct s3c24xx_uart_resources s3c2410_uart_resources[] __initdata = {
+	[0] = {
+		.resources	= s3c2410_uart0_resource,
+		.nr_resources	= ARRAY_SIZE(s3c2410_uart0_resource),
+	},
+	[1] = {
+		.resources	= s3c2410_uart1_resource,
+		.nr_resources	= ARRAY_SIZE(s3c2410_uart1_resource),
+	},
+	[2] = {
+		.resources	= s3c2410_uart2_resource,
+		.nr_resources	= ARRAY_SIZE(s3c2410_uart2_resource),
+	},
+};
+
+/* yart devices */
+
+static struct platform_device s3c24xx_uart_device0 = {
+	.id		= 0,
+};
+
+static struct platform_device s3c24xx_uart_device1 = {
+	.id		= 1,
+};
+
+static struct platform_device s3c24xx_uart_device2 = {
+	.id		= 2,
+};
+
+struct platform_device *s3c24xx_uart_src[3] = {
+	&s3c24xx_uart_device0,
+	&s3c24xx_uart_device1,
+	&s3c24xx_uart_device2,
+};
+
+struct platform_device *s3c24xx_uart_devs[3] = {
+};
 
 /* USB Host Controller */
 
diff --git a/arch/arm/mach-s3c2410/devs.h b/arch/arm/mach-s3c2410/devs.h
index 52c4bab5c76..fa124ed920e 100644
--- a/arch/arm/mach-s3c2410/devs.h
+++ b/arch/arm/mach-s3c2410/devs.h
@@ -17,7 +17,15 @@
 #include <linux/config.h>
 #include <linux/platform_device.h>
 
+struct s3c24xx_uart_resources {
+	struct resource		*resources;
+	unsigned long		 nr_resources;
+};
+
+extern struct s3c24xx_uart_resources s3c2410_uart_resources[];
+
 extern struct platform_device *s3c24xx_uart_devs[];
+extern struct platform_device *s3c24xx_uart_src[];
 
 extern struct platform_device s3c_device_usb;
 extern struct platform_device s3c_device_lcd;
diff --git a/arch/arm/mach-s3c2410/mach-anubis.c b/arch/arm/mach-s3c2410/mach-anubis.c
index cc97fbf6629..52bf718137d 100644
--- a/arch/arm/mach-s3c2410/mach-anubis.c
+++ b/arch/arm/mach-s3c2410/mach-anubis.c
@@ -131,7 +131,7 @@ static struct s3c24xx_uart_clksrc anubis_serial_clocks[] = {
 };
 
 
-static struct s3c2410_uartcfg anubis_uartcfgs[] = {
+static struct s3c2410_uartcfg anubis_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index 995bb8add33..947234df816 100644
--- a/arch/arm/mach-s3c2410/mach-bast.c
+++ b/arch/arm/mach-s3c2410/mach-bast.c
@@ -208,7 +208,7 @@ static struct s3c24xx_uart_clksrc bast_serial_clocks[] = {
 };
 
 
-static struct s3c2410_uartcfg bast_uartcfgs[] = {
+static struct s3c2410_uartcfg bast_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index 646a3a5d33a..aec431b2830 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -72,7 +72,7 @@ static struct map_desc h1940_iodesc[] __initdata = {
 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
 
-static struct s3c2410_uartcfg h1940_uartcfgs[] = {
+static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-nexcoder.c b/arch/arm/mach-s3c2410/mach-nexcoder.c
index 07d09509a62..065a1d4e860 100644
--- a/arch/arm/mach-s3c2410/mach-nexcoder.c
+++ b/arch/arm/mach-s3c2410/mach-nexcoder.c
@@ -51,7 +51,7 @@ static struct map_desc nexcoder_iodesc[] __initdata = {
 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 #define UFCON S3C2410_UFCON_RXTRIG12 | S3C2410_UFCON_FIFOMODE
 
-static struct s3c2410_uartcfg nexcoder_uartcfgs[] = {
+static struct s3c2410_uartcfg nexcoder_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-osiris.c b/arch/arm/mach-s3c2410/mach-osiris.c
index 49f715a7b27..858fd03c6bc 100644
--- a/arch/arm/mach-s3c2410/mach-osiris.c
+++ b/arch/arm/mach-s3c2410/mach-osiris.c
@@ -95,8 +95,7 @@ static struct s3c24xx_uart_clksrc osiris_serial_clocks[] = {
 	}
 };
 
-
-static struct s3c2410_uartcfg osiris_uartcfgs[] = {
+static struct s3c2410_uartcfg osiris_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-otom.c b/arch/arm/mach-s3c2410/mach-otom.c
index b39daedf93c..c71673fd995 100644
--- a/arch/arm/mach-s3c2410/mach-otom.c
+++ b/arch/arm/mach-s3c2410/mach-otom.c
@@ -45,7 +45,7 @@ static struct map_desc otom11_iodesc[] __initdata = {
 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 #define UFCON S3C2410_UFCON_RXTRIG12 | S3C2410_UFCON_FIFOMODE
 
-static struct s3c2410_uartcfg otom11_uartcfgs[] = {
+static struct s3c2410_uartcfg otom11_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-smdk2410.c b/arch/arm/mach-s3c2410/mach-smdk2410.c
index 2db932d72c5..25f7e9f4dce 100644
--- a/arch/arm/mach-s3c2410/mach-smdk2410.c
+++ b/arch/arm/mach-s3c2410/mach-smdk2410.c
@@ -65,7 +65,7 @@ static struct map_desc smdk2410_iodesc[] __initdata = {
 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
 
-static struct s3c2410_uartcfg smdk2410_uartcfgs[] = {
+static struct s3c2410_uartcfg smdk2410_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-smdk2440.c b/arch/arm/mach-s3c2410/mach-smdk2440.c
index 5fffd1d5104..d661c6b7ff5 100644
--- a/arch/arm/mach-s3c2410/mach-smdk2440.c
+++ b/arch/arm/mach-s3c2410/mach-smdk2440.c
@@ -86,7 +86,7 @@ static struct map_desc smdk2440_iodesc[] __initdata = {
 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
 
-static struct s3c2410_uartcfg smdk2440_uartcfgs[] = {
+static struct s3c2410_uartcfg smdk2440_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/mach-vr1000.c b/arch/arm/mach-s3c2410/mach-vr1000.c
index 785fc9cdcf7..d18efb279d3 100644
--- a/arch/arm/mach-s3c2410/mach-vr1000.c
+++ b/arch/arm/mach-s3c2410/mach-vr1000.c
@@ -166,7 +166,7 @@ static struct s3c24xx_uart_clksrc vr1000_serial_clocks[] = {
 	}
 };
 
-static struct s3c2410_uartcfg vr1000_uartcfgs[] = {
+static struct s3c2410_uartcfg vr1000_uartcfgs[] __initdata = {
 	[0] = {
 		.hwport	     = 0,
 		.flags	     = 0,
diff --git a/arch/arm/mach-s3c2410/s3c2410.c b/arch/arm/mach-s3c2410/s3c2410.c
index 0a2013a7654..0852e87a79c 100644
--- a/arch/arm/mach-s3c2410/s3c2410.c
+++ b/arch/arm/mach-s3c2410/s3c2410.c
@@ -42,6 +42,7 @@
 
 #include "s3c2410.h"
 #include "cpu.h"
+#include "devs.h"
 #include "clock.h"
 
 /* Initial IO mappings */
@@ -55,93 +56,13 @@ static struct map_desc s3c2410_iodesc[] __initdata = {
 	IODESC_ENT(WATCHDOG),
 };
 
-static struct resource s3c_uart0_resource[] = {
-	[0] = {
-		.start = S3C2410_PA_UART0,
-		.end   = S3C2410_PA_UART0 + 0x3fff,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = IRQ_S3CUART_RX0,
-		.end   = IRQ_S3CUART_ERR0,
-		.flags = IORESOURCE_IRQ,
-	}
-
-};
-
-static struct resource s3c_uart1_resource[] = {
-	[0] = {
-		.start = S3C2410_PA_UART1,
-		.end   = S3C2410_PA_UART1 + 0x3fff,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = IRQ_S3CUART_RX1,
-		.end   = IRQ_S3CUART_ERR1,
-		.flags = IORESOURCE_IRQ,
-	}
-};
-
-static struct resource s3c_uart2_resource[] = {
-	[0] = {
-		.start = S3C2410_PA_UART2,
-		.end   = S3C2410_PA_UART2 + 0x3fff,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = IRQ_S3CUART_RX2,
-		.end   = IRQ_S3CUART_ERR2,
-		.flags = IORESOURCE_IRQ,
-	}
-};
-
 /* our uart devices */
 
-static struct platform_device s3c_uart0 = {
-	.name		  = "s3c2410-uart",
-	.id		  = 0,
-	.num_resources	  = ARRAY_SIZE(s3c_uart0_resource),
-	.resource	  = s3c_uart0_resource,
-};
-
-
-static struct platform_device s3c_uart1 = {
-	.name		  = "s3c2410-uart",
-	.id		  = 1,
-	.num_resources	  = ARRAY_SIZE(s3c_uart1_resource),
-	.resource	  = s3c_uart1_resource,
-};
-
-static struct platform_device s3c_uart2 = {
-	.name		  = "s3c2410-uart",
-	.id		  = 2,
-	.num_resources	  = ARRAY_SIZE(s3c_uart2_resource),
-	.resource	  = s3c_uart2_resource,
-};
-
-static struct platform_device *uart_devices[] __initdata = {
-	&s3c_uart0,
-	&s3c_uart1,
-	&s3c_uart2
-};
-
-static int s3c2410_uart_count = 0;
-
 /* uart registration process */
 
 void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 {
-	struct platform_device *platdev;
-	int uart;
-
-	for (uart = 0; uart < no; uart++, cfg++) {
-		platdev = uart_devices[cfg->hwport];
-
-		s3c24xx_uart_devs[uart] = platdev;
-		platdev->dev.platform_data = cfg;
-	}
-
-	s3c2410_uart_count = uart;
+	s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
 }
 
 /* s3c2410_map_io
@@ -193,5 +114,5 @@ int __init s3c2410_init(void)
 {
 	printk("S3C2410: Initialising architecture\n");
 
-	return platform_add_devices(s3c24xx_uart_devs, s3c2410_uart_count);
+	return 0;
 }
diff --git a/arch/arm/mach-s3c2410/s3c2440.c b/arch/arm/mach-s3c2410/s3c2440.c
index b7fe6d9453f..54681740f9f 100644
--- a/arch/arm/mach-s3c2410/s3c2440.c
+++ b/arch/arm/mach-s3c2410/s3c2440.c
@@ -60,95 +60,13 @@ static struct map_desc s3c2440_iodesc[] __initdata = {
 	IODESC_ENT(WATCHDOG),
 };
 
-static struct resource s3c_uart0_resource[] = {
-	[0] = {
-		.start = S3C2410_PA_UART0,
-		.end   = S3C2410_PA_UART0 + 0x3fff,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = IRQ_S3CUART_RX0,
-		.end   = IRQ_S3CUART_ERR0,
-		.flags = IORESOURCE_IRQ,
-	}
-
-};
-
-static struct resource s3c_uart1_resource[] = {
-	[0] = {
-		.start = S3C2410_PA_UART1,
-		.end   = S3C2410_PA_UART1 + 0x3fff,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = IRQ_S3CUART_RX1,
-		.end   = IRQ_S3CUART_ERR1,
-		.flags = IORESOURCE_IRQ,
-	}
-};
-
-static struct resource s3c_uart2_resource[] = {
-	[0] = {
-		.start = S3C2410_PA_UART2,
-		.end   = S3C2410_PA_UART2 + 0x3fff,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = IRQ_S3CUART_RX2,
-		.end   = IRQ_S3CUART_ERR2,
-		.flags = IORESOURCE_IRQ,
-	}
-};
-
-/* our uart devices */
-
-static struct platform_device s3c_uart0 = {
-	.name		  = "s3c2440-uart",
-	.id		  = 0,
-	.num_resources	  = ARRAY_SIZE(s3c_uart0_resource),
-	.resource	  = s3c_uart0_resource,
-};
-
-static struct platform_device s3c_uart1 = {
-	.name		  = "s3c2440-uart",
-	.id		  = 1,
-	.num_resources	  = ARRAY_SIZE(s3c_uart1_resource),
-	.resource	  = s3c_uart1_resource,
-};
-
-static struct platform_device s3c_uart2 = {
-	.name		  = "s3c2440-uart",
-	.id		  = 2,
-	.num_resources	  = ARRAY_SIZE(s3c_uart2_resource),
-	.resource	  = s3c_uart2_resource,
-};
-
-static struct platform_device *uart_devices[] __initdata = {
-	&s3c_uart0,
-	&s3c_uart1,
-	&s3c_uart2
-};
-
 /* uart initialisation */
 
-static int __initdata s3c2440_uart_count;
-
 void __init s3c2440_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 {
-	struct platform_device *platdev;
-	int uart;
-
-	for (uart = 0; uart < no; uart++, cfg++) {
-		platdev = uart_devices[cfg->hwport];
-
-		s3c24xx_uart_devs[uart] = platdev;
-		platdev->dev.platform_data = cfg;
-	}
-
-	s3c2440_uart_count = uart;
+	s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
 }
 
-
 #ifdef CONFIG_PM
 
 static struct sleep_save s3c2440_sleep[] = {
@@ -269,15 +187,7 @@ core_initcall(s3c2440_core_init);
 
 int __init s3c2440_init(void)
 {
-	int ret;
-
 	printk("S3C2440: Initialising architecture\n");
 
-	ret = sysdev_register(&s3c2440_sysdev);
-	if (ret != 0)
-		printk(KERN_ERR "failed to register sysdev for s3c2440\n");
-	else
-		ret = platform_add_devices(s3c24xx_uart_devs, s3c2440_uart_count);
-
-	return ret;
+	return sysdev_register(&s3c2440_sysdev);
 }