From 13101a7be09d9db8a8e3a784a262a6d122ff3503 Mon Sep 17 00:00:00 2001
From: Justin TerAvest <teravest@chromium.org>
Date: Wed, 24 Jan 2018 14:23:12 -0700
Subject: soc/amd/stoneyridge: Add I2C devicetree support.

This commit establishes the stoneyridge implementation for i2c entries
in the devicetree.cb file.

BUG=b:72121803

Change-Id: I0d923609bd8fce94c9aee401a5ae2811281b60e5
Signed-off-by: Justin TerAvest <teravest@chromium.org>
Reviewed-on: https://review.coreboot.org/23405
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
---
 src/soc/amd/stoneyridge/chip.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/soc/amd/stoneyridge/chip.c')

diff --git a/src/soc/amd/stoneyridge/chip.c b/src/soc/amd/stoneyridge/chip.c
index d447ffa8ab..d3a8bc4044 100644
--- a/src/soc/amd/stoneyridge/chip.c
+++ b/src/soc/amd/stoneyridge/chip.c
@@ -20,6 +20,7 @@
 #include <cpu/cpu.h>
 #include <device/device.h>
 #include <device/pci.h>
+#include <drivers/i2c/designware/dw_i2c.h>
 #include <soc/cpu.h>
 #include <soc/northbridge.h>
 #include <soc/pci_devs.h>
@@ -28,6 +29,10 @@
 #include <amdblocks/agesawrapper.h>
 #include <amdblocks/agesawrapper_call.h>
 
+/* Supplied by i2c.c */
+extern struct device_operations stoneyridge_i2c_mmio_ops;
+extern const char *i2c_acpi_name(const struct device *dev);
+
 struct device_operations cpu_bus_ops = {
 	.read_resources	  = DEVICE_NOOP,
 	.set_resources	  = DEVICE_NOOP,
@@ -79,6 +84,9 @@ static void enable_dev(device_t dev)
 		dev->ops = &cpu_bus_ops;
 	else if (dev->path.type == DEVICE_PATH_PCI)
 		sb_enable(dev);
+	else if (dev->path.type == DEVICE_PATH_MMIO)
+		if (i2c_acpi_name(dev) != NULL)
+			dev->ops = &stoneyridge_i2c_mmio_ops;
 }
 
 static void soc_init(void *chip_info)
-- 
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