[M] Change in coreboot[master]: Mainboard/lenovo/x200: Configure ck505 clockgen

[Arthur Heymans (Code Review)]

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/74418 )

Change subject: Mainboard/lenovo/x200: Configure ck505 clockgen
......................................................................

Mainboard/lenovo/x200: Configure ck505 clockgen

The clockgen is behind an smbus mux which is implemented with a gpio.
This adds a callback inside the ck505 code to configure the mux.

UNTESTED and not checked if applicable on x301.

Change-Id: Iec9bbbaed43b74e8782f6963e491dbfa3b8b5247
Signed-off-by: Arthur Heymans 
---
M src/drivers/i2c/ck505/ck505.c
M src/mainboard/lenovo/x200/Kconfig
M src/mainboard/lenovo/x200/devicetree.cb
M src/mainboard/lenovo/x200/mainboard.c
4 files changed, 50 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/18/74418/1

diff --git a/src/drivers/i2c/ck505/ck505.c b/src/drivers/i2c/ck505/ck505.c
index 58eaec6..a3858ad 100644
--- a/src/drivers/i2c/ck505/ck505.c
+++ b/src/drivers/i2c/ck505/ck505.c
@@ -5,9 +5,18 @@
 #include <device/device.h>
 #include <device/smbus.h>
 #include "chip.h"
+#include "ck505.h"

#define SMBUS_BLOCK_SIZE 32

+__weak void ck505_set_mux_enable(void)
+{
+}
+
+__weak void ck505_set_mux_disable(void)
+{
+}
+
 static void ck505_init(struct device *dev)
 {
    struct drivers_i2c_ck505_config *config;
@@ -18,6 +27,8 @@
    if (!dev->enabled || dev->path.type != DEVICE_PATH_I2C)
    	return;

+	ck505_set_mux_enable();
+
    config = dev->chip_info;

dev_nregs = smbus_block_read(dev, 0, sizeof(block), block);
@@ -41,6 +52,8 @@

if (smbus_block_write(dev, 0, dev_nregs, block) < 0)
    	printk(BIOS_ERR, "Failed writing ck505 configuration!\n");
+
+	ck505_set_mux_disable();
 }

static struct device_operations ck505_operations = {
diff --git a/src/mainboard/lenovo/x200/Kconfig b/src/mainboard/lenovo/x200/Kconfig
index 6b22fb3..c926691 100644
--- a/src/mainboard/lenovo/x200/Kconfig
+++ b/src/mainboard/lenovo/x200/Kconfig
@@ -21,6 +21,7 @@
    select DRIVERS_LENOVO_WACOM
    select MAINBOARD_HAS_LIBGFXINIT
    select MAINBOARD_USES_IFD_GBE_REGION
+	select DRIVERS_I2C_CK505

config VBOOT
    select VBOOT_VBNV_FLASH
diff --git a/src/mainboard/lenovo/x200/devicetree.cb b/src/mainboard/lenovo/x200/devicetree.cb
index 7871cfd..ca1dc9e 100644
--- a/src/mainboard/lenovo/x200/devicetree.cb
+++ b/src/mainboard/lenovo/x200/devicetree.cb
@@ -165,6 +165,15 @@
    				device i2c 5e on end
    				device i2c 5f on end
    			end
+				chip drivers/i2c/ck505
+					register "mask" = "{ 0xff, 0xff, 0xff,
+						 0xff, 0xff, 0xff, 0xff, 0xff,
+						 0xff, 0xff }"
+					register "regs" = "{ 0x11, 0xf1, 0x9f,
+						 0xdf, 0x41, 0x00, 0x25, 0x06,
+						 0x80, 0x00 }"
+					device i2c 69 on end
+				end
    		end
    		device pci 1f.5 off end # SATA/IDE 2
    		device pci 1f.6 off end # Thermal
diff --git a/src/mainboard/lenovo/x200/mainboard.c b/src/mainboard/lenovo/x200/mainboard.c
index 4b2f253..1c96c69 100644
--- a/src/mainboard/lenovo/x200/mainboard.c
+++ b/src/mainboard/lenovo/x200/mainboard.c
@@ -3,6 +3,18 @@
 #include <device/device.h>
 #include <drivers/intel/gma/int15.h>
 #include <drivers/lenovo/lenovo.h>
+#include <drivers/i2c/ck505/ck505.h>
+#include <southbridge/intel/common/gpio.h>
+
+void ck505_set_mux_enable(void)
+{
+	set_gpio(42, GPIO_LEVEL_HIGH);
+}
+
+void ck505_set_mux_disable(void)
+{
+	set_gpio(42, GPIO_LEVEL_LOW);
+}

static void fill_ssdt(const struct device *device)
 {