ipq806x: add i2c driver

this change ports i2c and other relevant drivers from depthcharge for ipq806x.

BUG=chrome-os-partner:33647
BRANCH=ToT
TEST=Booted storm using vboot2

Change-Id: I3d9a431aa8adb9b91dbccdf031647dfadbafc24c
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: a0c615d0a49fd9c0ffa231353800882fff6ab90b
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Change-Id: Id7cc3932ed4ae54f46336aaebde35e84125ebebd
Original-Reviewed-on: https://chromium-review.googlesource.com/229428
Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Tested-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/9685
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 58 insertions, 0 deletions

diff --git a/src/mainboard/google/storm/gsbi.c b/src/mainboard/google/storm/gsbi.c
new file mode 100644
index 0000000000..17b74e5f3e
--- /dev/null
+++ b/src/mainboard/google/storm/gsbi.c
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the depthcharge project.
+ *
+ * Copyright (C) 2014 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <soc/gpio.h>
+#include <soc/gsbi.h>
+#include <soc/qup.h>
+
+#define GPIO_FUNC_I2C		0x1
+
+int gsbi_init_board(gsbi_id_t gsbi_id)
+{
+	switch (gsbi_id) {
+	case GSBI_ID_4:
+			/* Configure GPIOs 13 - SCL, 12 - SDA, 2mA gpio_en */
+			gpio_tlmm_config_set(12, GPIO_FUNC_I2C,
+					     GPIO_NO_PULL, GPIO_2MA, 1);
+			gpio_tlmm_config_set(13, GPIO_FUNC_I2C,
+					     GPIO_NO_PULL, GPIO_2MA, 1);
+		break;
+	case GSBI_ID_1:
+			/* Configure GPIOs 54 - SCL, 53 - SDA, 2mA gpio_en */
+			gpio_tlmm_config_set(54, GPIO_FUNC_I2C,
+					     GPIO_NO_PULL, GPIO_2MA, 1);
+			gpio_tlmm_config_set(53, GPIO_FUNC_I2C,
+					     GPIO_NO_PULL, GPIO_2MA, 1);
+		break;
+	default:
+		return 1;
+	}
+
+	return 0;
+}