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i2c: Add variable to set slave address of the EC.

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Only one EC was an i2c slave, samus_pd.
Now we have 2 more, ryu and ryu_sh (sensor hub).

Define a new variable: CONFIG_HOSTCMD_I2C_SLAVE_ADDR

TEST=Compiled
BRANCH=None
BUG=chrome-os-partner:30740

Change-Id: I484aaf5ca72f14a91ce261b91fbe600dca3474dc
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/208978
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This commit is contained in:
Gwendal Grignou
2014-07-18 15:06:22 -07:00
committed by chrome-internal-fetch
parent 3bb7de950f
commit 4eee9fe426
4 changed files with 17 additions and 1 deletions
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5
board/ryu/board.h
View File

@@ -51,6 +51,11 @@
#define I2C_PORT_CHARGER I2C_PORT_MASTER
#define I2C_PORT_BATTERY I2C_PORT_MASTER
/* slave address for host commands */
#ifdef HAS_TASK_HOSTCMD
#define CONFIG_HOSTCMD_I2C_SLAVE_ADDR 0x3c
#endif
#ifndef __ASSEMBLER__
/* Timer selection */

5
board/samus_pd/board.h
View File

@@ -34,6 +34,11 @@
#define I2C_PORT_SLAVE 0
#define I2C_PORT_EC I2C_PORT_SLAVE
/* slave address for host commands */
#ifdef HAS_TASK_HOSTCMD
#define CONFIG_HOSTCMD_I2C_SLAVE_ADDR CONFIG_USB_PD_I2C_SLAVE_ADDR
#endif
/*
* Allow dangerous commands all the time, since we don't have a write protect
* switch.

2
chip/stm32/i2c-stm32f0.c
View File

@@ -423,7 +423,7 @@ static void i2c_init(void)
#ifdef HAS_TASK_HOSTCMD
STM32_I2C_CR1(I2C_PORT_EC) |= STM32_I2C_CR1_RXIE | STM32_I2C_CR1_ERRIE
| STM32_I2C_CR1_ADDRIE | STM32_I2C_CR1_STOPIE;
STM32_I2C_OAR1(I2C_PORT_EC) = 0x8000 | CONFIG_USB_PD_I2C_SLAVE_ADDR;
STM32_I2C_OAR1(I2C_PORT_EC) = 0x8000 | CONFIG_HOSTCMD_I2C_SLAVE_ADDR;
task_enable_irq(STM32_IRQ_I2C1);
#endif
}

6
include/config.h
View File

@@ -525,6 +525,12 @@
*/
#undef CONFIG_HOST_COMMAND_STATUS
/*
* For ECs where the host command interface is I2C, slave
* address which the EC will respond to.
*/
#undef CONFIG_HOSTCMD_I2C_SLAVE_ADDR
/*****************************************************************************/
/* Enable debugging and profiling statistics for hook functions */