ARM: 5668/2: U300 I2C board setup

This sets up the U300 I2C subdevices so that the AB3100
analog baseband ASIC is properly detected and also the
camera devices in the U335 reference design get properly
registered.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-u300/Makefile b/arch/arm/mach-u300/Makefile
index 4941f89ea798daaedbd8e1506e4120177ef8cf17..885b5c027c1ea71e32c76df43265ca6bdcc54814 100644 (file)
--- a/arch/arm/mach-u300/Makefile
+++ b/arch/arm/mach-u300/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_ARCH_U300)                 += u300.o
 obj-$(CONFIG_MMC)                 += mmc.o
 obj-$(CONFIG_SPI_PL022)           += spi.o
 obj-$(CONFIG_MACH_U300_SPIDUMMY)  += dummyspichip.o
+obj-$(CONFIG_I2C_STU300)          += i2c.o

diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index 38d08a1c25d0b97e43cd83a1fe228154e7f88b36..bad1ba228cbf3dd44ca17f855af3d1945358f833 100644 (file)
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -33,6 +33,7 @@
 #include "clock.h"
 #include "mmc.h"
 #include "spi.h"
+#include "i2c.h"
 
 /*
  * Static I/O mappings that are needed for booting the U300 platforms. The
@@ -379,14 +380,14 @@ static struct platform_device wdog_device = {
 };
 
 static struct platform_device i2c0_device = {
-       .name = "stddci2c",
+       .name = "stu300",
        .id = 0,
        .num_resources = ARRAY_SIZE(i2c0_resources),
        .resource = i2c0_resources,
 };
 
 static struct platform_device i2c1_device = {
-       .name = "stddci2c",
+       .name = "stu300",
        .id = 1,
        .num_resources = ARRAY_SIZE(i2c1_resources),
        .resource = i2c1_resources,
@@ -625,6 +626,9 @@ void __init u300_init_devices(void)
 
        u300_assign_physmem();
 
+       /* Register subdevices on the I2C buses */
+       u300_i2c_register_board_devices();
+
        /* Register subdevices on the SPI bus */
        u300_spi_register_board_devices();
 

diff --git a/arch/arm/mach-u300/i2c.c b/arch/arm/mach-u300/i2c.c
new file mode 100644 (file)
index 0000000..10be1f8
--- /dev/null
+++ b/arch/arm/mach-u300/i2c.c
@@ -0,0 +1,43 @@
+/*
+ * arch/arm/mach-u300/i2c.c
+ *
+ * Copyright (C) 2009 ST-Ericsson AB
+ * License terms: GNU General Public License (GPL) version 2
+ *
+ * Register board i2c devices
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ */
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+#include <mach/irqs.h>
+
+static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
+       {
+               .type = "ab3100",
+               .addr = 0x48,
+               .irq = IRQ_U300_IRQ0_EXT,
+       },
+};
+
+static struct i2c_board_info __initdata bus1_i2c_board_info[] = {
+#ifdef CONFIG_MACH_U300_BS335
+       {
+               .type = "fwcam",
+               .addr = 0x10,
+       },
+       {
+               .type = "fwcam",
+               .addr = 0x5d,
+       },
+#else
+       { },
+#endif
+};
+
+void __init u300_i2c_register_board_devices(void)
+{
+       i2c_register_board_info(0, bus0_i2c_board_info,
+                               ARRAY_SIZE(bus0_i2c_board_info));
+       i2c_register_board_info(1, bus1_i2c_board_info,
+                               ARRAY_SIZE(bus1_i2c_board_info));
+}

diff --git a/arch/arm/mach-u300/i2c.h b/arch/arm/mach-u300/i2c.h
new file mode 100644 (file)
index 0000000..485c02e
--- /dev/null
+++ b/arch/arm/mach-u300/i2c.h
@@ -0,0 +1,23 @@
+/*
+ * arch/arm/mach-u300/i2c.h
+ *
+ * Copyright (C) 2009 ST-Ericsson AB
+ * License terms: GNU General Public License (GPL) version 2
+ *
+ * Register board i2c devices
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ */
+
+#ifndef MACH_U300_I2C_H
+#define MACH_U300_I2C_H
+
+#ifdef CONFIG_I2C_STU300
+void __init u300_i2c_register_board_devices(void);
+#else
+/* Compile out this stuff if no I2C adapter is available */
+static inline void __init u300_i2c_register_board_devices(void)
+{
+}
+#endif
+
+#endif