Change in coreboot[master]: mb/google/octopus: Close unused I2C bus 7 include SCL and SDA

[Peichao Li (Code Review)]

Peichao Li has uploaded this change for review. ( https://review.coreboot.org/28669

Change subject: mb/google/octopus: Close unused I2C bus 7 include SCL and SDA
......................................................................

mb/google/octopus: Close unused I2C bus 7 include SCL and SDA

Since I2C bus 7 attached the touchscreen device however Phaser units
    that haven't it. So for avoiding side effects, we need close I2C bus
    7 SCL and SDA respectilvely.

BUG=
    TEST=according to sku_id(Phaser: 0x1, Phaser360: 0x2, Phaser360s: 0x3)
    distinguish whether close these gpios.

Change-Id: I8ad17761f2a053dc329bbec0a0a3284d47289666
Signed-off-by: peichao.wang 
---
M src/mainboard/google/octopus/variants/phaser/gpio.c
1 file changed, 54 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/28669/1

diff --git a/src/mainboard/google/octopus/variants/phaser/gpio.c b/src/mainboard/google/octopus/variants/phaser/gpio.c
index 1c39e65..1856e0b 100644
--- a/src/mainboard/google/octopus/variants/phaser/gpio.c
+++ b/src/mainboard/google/octopus/variants/phaser/gpio.c
@@ -18,6 +18,12 @@
 #include <boardid.h>
 #include <gpio.h>
 #include <soc/gpio.h>
+#include <ec/google/chromeec/ec.h>
+#include <console/console.h>
+
+
+#define SKU_UNKNOWN            0xFFFFFFFF
+

static const struct pad_config default_override_table[] = {
    PAD_NC(GPIO_52, UP_20K),
@@ -39,6 +45,31 @@
    PAD_NC(GPIO_214, DN_20K),
 };

+static const struct pad_config sku1_default_override_table[] = {
+       /* disable I2C7 SCL and SDA */
+       PAD_NC(GPIO_114, UP_20K),     /* LPSS_I2C7_SDA */
+       PAD_NC(GPIO_115, UP_20K),     /* LPSS_I2C7_SCL */
+
+       PAD_NC(GPIO_52, UP_20K),
+       PAD_NC(GPIO_53, UP_20K),
+       PAD_NC(GPIO_67, UP_20K),
+       PAD_NC(GPIO_117, UP_20K),
+       PAD_NC(GPIO_143, UP_20K),
+
+       /* EN_PP3300_TOUCHSCREEN */
+       PAD_CFG_GPO_IOSSTATE_IOSTERM(GPIO_146, 0, DEEP, NONE, Tx0RxDCRx0,
+                                       DISPUPD),
+
+       PAD_NC(GPIO_161, DN_20K),
+
+       /* EN_PP3300_WLAN_L */
+       PAD_CFG_GPO_IOSSTATE_IOSTERM(GPIO_178, 0, DEEP, NONE, Tx0RxDCRx0, DISPUPD),
+
+       PAD_NC(GPIO_213, DN_20K),
+       PAD_NC(GPIO_214, DN_20K),
+};
+
+
 static const struct pad_config bid0_override_table[] = {
    PAD_NC(GPIO_52, UP_20K),
    PAD_NC(GPIO_53, UP_20K),
@@ -51,7 +82,8 @@

const struct pad_config *variant_override_gpio_table(size_t *num)
 {
-	const struct pad_config *c;
+	const struct pad_config *c, *d;
+	static uint32_t sku_id = SKU_UNKNOWN;

switch (board_id()) {
    case 0:
@@ -64,7 +96,27 @@
    	*num = ARRAY_SIZE(default_override_table);
    }

-	return c;
+	if (google_chromeec_cbi_get_sku_id(&sku_id))
+        {
+               sku_id = SKU_UNKNOWN;
+               printk(BIOS_ERR, "%s: Unexpected SKU ID %u\n",
+                       __func__, sku_id);
+               return NULL;
+        }
+        printk(BIOS_ERR, "caf debug SKU ID is %u\n", sku_id);
+        if (sku_id == 1)
+        {
+               d = sku1_default_override_table;
+               *num = ARRAY_SIZE(sku1_default_override_table);
+               printk(BIOS_ERR, "caf debug 1\n");
+               return d;
+        }
+        else
+        {
+               printk(BIOS_ERR, "caf debug 2\n");
+               return c;
+        }
+
 }

/* GPIOs needed prior to ramstage. */