tegra124: Implement the tegra i2c driver.

This uses the packet mode of the controller since that allows transfering more
data at a time.

Change-Id: I8329e5f915123cb55464fc28f7df9f9037b0446d
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/172402
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 4444cd626a55c8c2486cda6ac9cfece4e53dd0d3)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6703
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

3 files changed, 39 insertions, 0 deletions

diff --git a/src/soc/nvidia/tegra124/Makefile.inc b/src/soc/nvidia/tegra124/Makefile.inc
index 683d940eb4..d4d16fec2c 100644
--- a/src/soc/nvidia/tegra124/Makefile.inc
+++ b/src/soc/nvidia/tegra124/Makefile.inc
@@ -2,8 +2,10 @@ CBOOTIMAGE = cbootimage
 
 bootblock-y += cbfs.c
 bootblock-y += clock.c
+bootblock-y += i2c.c
 bootblock-y += monotonic_timer.c
 bootblock-y += ../tegra/gpio.c
+bootblock-y += ../tegra/i2c.c
 bootblock-y += ../tegra/pingroup.c
 bootblock-y += ../tegra/pinmux.c
 bootblock-y += timer.c
diff --git a/src/soc/nvidia/tegra124/i2c.c b/src/soc/nvidia/tegra124/i2c.c
new file mode 100644
index 0000000000..b54230b171
--- /dev/null
+++ b/src/soc/nvidia/tegra124/i2c.c
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <soc/addressmap.h>
+#include <soc/nvidia/tegra/i2c.h>
+
+void * const tegra_i2c_bases[TEGRA_I2C_BASE_COUNT] = {
+	(void *)TEGRA_I2C_BASE,  (void *)TEGRA_I2C2_BASE,
+	(void *)TEGRA_I2C3_BASE, (void *)TEGRA_I2C4_BASE,
+	(void *)TEGRA_I2C5_BASE, (void *)TEGRA_I2C6_BASE
+};
diff --git a/src/soc/nvidia/tegra124/include/soc/addressmap.h b/src/soc/nvidia/tegra124/include/soc/addressmap.h
index 2fd607d4ad..bf59d75085 100644
--- a/src/soc/nvidia/tegra124/include/soc/addressmap.h
+++ b/src/soc/nvidia/tegra124/include/soc/addressmap.h
@@ -44,7 +44,13 @@ enum {
 	TEGRA_APB_UARTD_BASE =		TEGRA_APB_MISC_BASE + 0x6300,
 	TEGRA_APB_UARTE_BASE =		TEGRA_APB_MISC_BASE + 0x6400,
 	TEGRA_NAND_BASE =		TEGRA_APB_MISC_BASE + 0x8000,
+	TEGRA_I2C_BASE =		TEGRA_APB_MISC_BASE + 0xC000,
 	TEGRA_SPI_BASE =		TEGRA_APB_MISC_BASE + 0xC380,
+	TEGRA_I2C2_BASE =		TEGRA_APB_MISC_BASE + 0xC400,
+	TEGRA_I2C3_BASE =		TEGRA_APB_MISC_BASE + 0xC500,
+	TEGRA_I2C4_BASE =		TEGRA_APB_MISC_BASE + 0xC700,
+	TEGRA_I2C5_BASE =		TEGRA_APB_MISC_BASE + 0xD000,
+	TEGRA_I2C6_BASE =		TEGRA_APB_MISC_BASE + 0xD100,
 	TEGRA_SLINK1_BASE =		TEGRA_APB_MISC_BASE + 0xD400,
 	TEGRA_SLINK2_BASE =		TEGRA_APB_MISC_BASE + 0xD600,
 	TEGRA_SLINK3_BASE =		TEGRA_APB_MISC_BASE + 0xD800,
@@ -59,4 +65,8 @@ enum {
 	TEGRA_USB_ADDR_MASK =		0xFFFFC000,
 };
 
+enum {
+	TEGRA_I2C_BASE_COUNT = 6,
+};
+
 #endif /* __SOC_NVIDIA_TEGRA124_INCLUDE_SOC_ADDRESS_MAP_H__ */