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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /include/linux/i2c-omap.h
Initial import
Diffstat (limited to 'include/linux/i2c-omap.h')
-rw-r--r--include/linux/i2c-omap.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h
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+++ b/include/linux/i2c-omap.h
@@ -0,0 +1,38 @@
+#ifndef __I2C_OMAP_H__
+#define __I2C_OMAP_H__
+
+#include <linux/platform_device.h>
+
+/*
+ * Version 2 of the I2C peripheral unit has a different register
+ * layout and extra registers. The ID register in the V2 peripheral
+ * unit on the OMAP4430 reports the same ID as the V1 peripheral
+ * unit on the OMAP3530, so we must inform the driver which IP
+ * version we know it is running on from platform / cpu-specific
+ * code using these constants in the hwmod class definition.
+ */
+
+#define OMAP_I2C_IP_VERSION_1 1
+#define OMAP_I2C_IP_VERSION_2 2
+
+/* struct omap_i2c_bus_platform_data .flags meanings */
+
+#define OMAP_I2C_FLAG_NO_FIFO BIT(0)
+#define OMAP_I2C_FLAG_SIMPLE_CLOCK BIT(1)
+#define OMAP_I2C_FLAG_16BIT_DATA_REG BIT(2)
+#define OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK BIT(5)
+#define OMAP_I2C_FLAG_FORCE_19200_INT_CLK BIT(6)
+/* how the CPU address bus must be translated for I2C unit access */
+#define OMAP_I2C_FLAG_BUS_SHIFT_NONE 0
+#define OMAP_I2C_FLAG_BUS_SHIFT_1 BIT(7)
+#define OMAP_I2C_FLAG_BUS_SHIFT_2 BIT(8)
+#define OMAP_I2C_FLAG_BUS_SHIFT__SHIFT 7
+
+struct omap_i2c_bus_platform_data {
+ u32 clkrate;
+ u32 rev;
+ u32 flags;
+ void (*set_mpu_wkup_lat)(struct device *dev, long set);
+};
+
+#endif