ARM: 5913/1: ARM U8500: add I2C platform configurations
This adds platform configurations to support four
i2c controllers found on early MOP500 platform
This depends on the patch 5908/1 for build to succeed.
Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index f33dbb7..803aec1 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -22,6 +22,7 @@
#include <asm/mach/arch.h>
#include <plat/mtu.h>
+#include <plat/i2c.h>
#include <mach/hardware.h>
#include <mach/setup.h>
@@ -120,6 +121,70 @@
.irq = {IRQ_RTC_RTT, NO_IRQ},
};
+#define U8500_I2C_RESOURCES(id, size) \
+static struct resource u8500_i2c_resources_##id[] = { \
+ [0] = { \
+ .start = U8500_I2C##id##_BASE, \
+ .end = U8500_I2C##id##_BASE + size - 1, \
+ .flags = IORESOURCE_MEM, \
+ }, \
+ [1] = { \
+ .start = IRQ_I2C##id, \
+ .end = IRQ_I2C##id, \
+ .flags = IORESOURCE_IRQ \
+ } \
+}
+
+U8500_I2C_RESOURCES(0, SZ_4K);
+U8500_I2C_RESOURCES(1, SZ_4K);
+U8500_I2C_RESOURCES(2, SZ_4K);
+U8500_I2C_RESOURCES(3, SZ_4K);
+
+#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
+static struct nmk_i2c_controller u8500_i2c_##id = { \
+ /* \
+ * slave data setup time, which is \
+ * 250 ns,100ns,10ns which is 14,6,2 \
+ * respectively for a 48 Mhz \
+ * i2c clock \
+ */ \
+ .slsu = _slsu, \
+ /* Tx FIFO threshold */ \
+ .tft = _tft, \
+ /* Rx FIFO threshold */ \
+ .rft = _rft, \
+ /* std. mode operation */ \
+ .clk_freq = clk, \
+ .sm = _sm, \
+}
+
+/*
+ * The board uses 4 i2c controllers, initialize all of
+ * them with slave data setup time of 250 ns,
+ * Tx & Rx FIFO threshold values as 1 and standard
+ * mode of operation
+ */
+U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
+U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
+U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
+U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
+
+#define U8500_I2C_PDEVICE(cid) \
+static struct platform_device i2c_controller##cid = { \
+ .name = "nmk-i2c", \
+ .id = cid, \
+ .num_resources = 2, \
+ .resource = u8500_i2c_resources_##cid, \
+ .dev = { \
+ .platform_data = &u8500_i2c_##cid \
+ } \
+}
+
+U8500_I2C_PDEVICE(0);
+U8500_I2C_PDEVICE(1);
+U8500_I2C_PDEVICE(2);
+U8500_I2C_PDEVICE(3);
+
static struct amba_device *amba_devs[] __initdata = {
&uart0_device,
&uart1_device,
@@ -128,6 +193,14 @@
&pl031_device,
};
+/* add any platform devices here - TODO */
+static struct platform_device *platform_devs[] __initdata = {
+ &i2c_controller0,
+ &i2c_controller1,
+ &i2c_controller2,
+ &i2c_controller3,
+};
+
static void __init u8500_timer_init(void)
{
#ifdef CONFIG_LOCAL_TIMERS
@@ -152,6 +225,8 @@
for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
amba_device_register(amba_devs[i], &iomem_resource);
+ platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
+
spi_register_board_info(u8500_spi_devices,
ARRAY_SIZE(u8500_spi_devices));