aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap1/i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap1/i2c.c')
-rw-r--r--arch/arm/mach-omap1/i2c.c72
1 files changed, 66 insertions, 6 deletions
diff --git a/arch/arm/mach-omap1/i2c.c b/arch/arm/mach-omap1/i2c.c
index 1bf4735e27a..7f5761cffd2 100644
--- a/arch/arm/mach-omap1/i2c.c
+++ b/arch/arm/mach-omap1/i2c.c
@@ -19,13 +19,25 @@
*
*/
+#include <linux/i2c-omap.h>
+#include <mach/mux.h>
+#include "soc.h"
+
#include <plat/i2c.h>
-#include <plat/mux.h>
-#include <plat/cpu.h>
-int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
- struct i2c_board_info const *info,
- unsigned len)
+#define OMAP_I2C_SIZE 0x3f
+#define OMAP1_I2C_BASE 0xfffb3800
+#define OMAP1_INT_I2C (32 + 4)
+
+static const char name[] = "omap_i2c";
+
+static struct resource i2c_resources[2] = {
+};
+
+static struct platform_device omap_i2c_devices[1] = {
+};
+
+static void __init omap1_i2c_mux_pins(int bus_id)
{
if (cpu_is_omap7xx()) {
omap_cfg_reg(I2C_7XX_SDA);
@@ -34,6 +46,54 @@ int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
omap_cfg_reg(I2C_SDA);
omap_cfg_reg(I2C_SCL);
}
+}
+
+int __init omap_i2c_add_bus(struct omap_i2c_bus_platform_data *pdata,
+ int bus_id)
+{
+ struct platform_device *pdev;
+ struct resource *res;
+
+ if (bus_id > 1)
+ return -EINVAL;
+
+ omap1_i2c_mux_pins(bus_id);
- return omap_plat_register_i2c_bus(bus_id, clkrate, info, len);
+ pdev = &omap_i2c_devices[bus_id - 1];
+ pdev->id = bus_id;
+ pdev->name = name;
+ pdev->num_resources = ARRAY_SIZE(i2c_resources);
+ res = i2c_resources;
+ res[0].start = OMAP1_I2C_BASE;
+ res[0].end = res[0].start + OMAP_I2C_SIZE;
+ res[0].flags = IORESOURCE_MEM;
+ res[1].start = OMAP1_INT_I2C;
+ res[1].flags = IORESOURCE_IRQ;
+ pdev->resource = res;
+
+ /* all OMAP1 have IP version 1 register set */
+ pdata->rev = OMAP_I2C_IP_VERSION_1;
+
+ /* all OMAP1 I2C are implemented like this */
+ pdata->flags = OMAP_I2C_FLAG_NO_FIFO |
+ OMAP_I2C_FLAG_SIMPLE_CLOCK |
+ OMAP_I2C_FLAG_16BIT_DATA_REG |
+ OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK;
+
+ /* how the cpu bus is wired up differs for 7xx only */
+
+ if (cpu_is_omap7xx())
+ pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_1;
+ else
+ pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_2;
+
+ pdev->dev.platform_data = pdata;
+
+ return platform_device_register(pdev);
+}
+
+static int __init omap_i2c_cmdline(void)
+{
+ return omap_register_i2c_bus_cmdline();
}
+subsys_initcall(omap_i2c_cmdline);