Add hooks module so modules can be notified of system-level events.

This will be used for sleep/wake/sysjump/etc.  For now it's just wired
up to clock frequency changing.

Signed-off-by: Randall Spangler <rspangler@chromium.org>

BUG=none
TEST=manual: use nopll command, should still work

Change-Id: Iedcea5830bc18eacfd955c29b8f793aba8905dd8

1 files changed, 9 insertions, 16 deletions

diff --git a/include/i2c.h b/include/i2c.h
index 22ab18adcf..7543d8cb25 100644
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -13,30 +13,23 @@
 /* Flags for slave address field, in addition to the 8-bit address */
 #define I2C_FLAG_BIG_ENDIAN 0x100  /* 16 byte values are MSB-first */
 
-/* Initializes the module. */
+/* Initialize the module. */
 int i2c_init(void);
 
-/* Notifies the module the system clock frequency has changed to <freq>. */
-void i2c_clock_changed(int freq);
-
-/* Reads a 16-bit register from the slave at 8-bit slave address
- * <slaveaddr>, at the specified 8-bit <offset> in the slave's address
- * space. */
+/* Read a 16-bit register from the slave at 8-bit slave address <slaveaddr>, at
+ * the specified 8-bit <offset> in the slave's address space. */
 int i2c_read16(int port, int slave_addr, int offset, int* data);
 
-/* Writes a 16-bit register to the slave at 8-bit slave address
- * <slaveaddr>, at the specified 8-bit <offset> in the slave's address
- * space. */
+/* Write a 16-bit register to the slave at 8-bit slave address <slaveaddr>, at
+ * the specified 8-bit <offset> in the slave's address space. */
 int i2c_write16(int port, int slave_addr, int offset, int data);
 
-/* Reads an 8-bit register from the slave at 8-bit slave address
- * <slaveaddr>, at the specified 8-bit <offset> in the slave's address
- * space. */
+/* Read an 8-bit register from the slave at 8-bit slave address <slaveaddr>, at
+ * the specified 8-bit <offset> in the slave's address space. */
 int i2c_read8(int port, int slave_addr, int offset, int* data);
 
-/* Writes an 8-bit register to the slave at 8-bit slave address
- * <slaveaddr>, at the specified 8-bit <offset> in the slave's address
- * space. */
+/* Write an 8-bit register to the slave at 8-bit slave address <slaveaddr>, at
+ * the specified 8-bit <offset> in the slave's address space. */
 int i2c_write8(int port, int slave_addr, int offset, int data);
 
 /* Read ascii string using smbus read block protocol.