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Diffstat (limited to 'src/soc/intel/skylake/i2c.c')
-rw-r--r--src/soc/intel/skylake/i2c.c47
1 files changed, 38 insertions, 9 deletions
diff --git a/src/soc/intel/skylake/i2c.c b/src/soc/intel/skylake/i2c.c
index 64d39cddb2..eebe665d94 100644
--- a/src/soc/intel/skylake/i2c.c
+++ b/src/soc/intel/skylake/i2c.c
@@ -13,9 +13,11 @@
* GNU General Public License for more details.
*/
+#include <arch/acpigen.h>
#include <device/device.h>
#include <device/i2c.h>
#include <device/pci.h>
+#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <soc/intel/common/lpss_i2c.h>
#include <soc/ramstage.h>
@@ -54,26 +56,53 @@ static int i2c_dev_to_bus(struct device *dev)
static void i2c_dev_init(struct device *dev)
{
struct soc_intel_skylake_config *config = dev->chip_info;
+ const struct lpss_i2c_speed_config *sptr;
+ enum i2c_speed speed;
+ int i, bus = i2c_dev_to_bus(dev);
+
+ if (!config || bus < 0)
+ return;
+
+ speed = config->i2c[bus].speed ? : I2C_SPEED_FAST;
+ lpss_i2c_init(bus, speed);
+
+ /* Apply custom speed config if it has been set by the board */
+ for (i = 0; i < LPSS_I2C_SPEED_CONFIG_COUNT; i++) {
+ sptr = &config->i2c[bus].speed_config[i];
+ if (sptr->speed == speed) {
+ lpss_i2c_set_speed_config(bus, sptr);
+ break;
+ }
+ }
+}
+
+/* Generate ACPI I2C device objects */
+static void i2c_fill_ssdt(struct device *dev)
+{
+ struct soc_intel_skylake_config *config = dev->chip_info;
int bus = i2c_dev_to_bus(dev);
if (!config || bus < 0)
return;
- lpss_i2c_init(bus, config->i2c[bus].speed ? : I2C_SPEED_FAST);
+ acpigen_write_scope(acpi_device_path(dev));
+ lpss_i2c_acpi_fill_ssdt(config->i2c[bus].speed_config);
+ acpigen_pop_len();
}
static struct i2c_bus_operations i2c_bus_ops = {
- .dev_to_bus = &i2c_dev_to_bus,
+ .dev_to_bus = &i2c_dev_to_bus,
};
static struct device_operations i2c_dev_ops = {
- .read_resources = &pci_dev_read_resources,
- .set_resources = &pci_dev_set_resources,
- .enable_resources = &pci_dev_enable_resources,
- .scan_bus = &scan_smbus,
- .ops_pci = &soc_pci_ops,
- .ops_i2c_bus = &i2c_bus_ops,
- .init = &i2c_dev_init,
+ .read_resources = &pci_dev_read_resources,
+ .set_resources = &pci_dev_set_resources,
+ .enable_resources = &pci_dev_enable_resources,
+ .scan_bus = &scan_smbus,
+ .ops_pci = &soc_pci_ops,
+ .ops_i2c_bus = &i2c_bus_ops,
+ .init = &i2c_dev_init,
+ .acpi_fill_ssdt_generator = &i2c_fill_ssdt,
};
static const unsigned short pci_device_ids[] = {