qcom: Add i2c driver

Add i2c driver in coreboot.

Change-Id: I3d39d0325718fc5dd60da42eb2b87dcc4429bfc2
Signed-off-by: Prudhvi Yarlagadda <pyarlaga@codeaurora.org>
Signed-off-by: Nitheesh Sekar <nsekar@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32546
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/src/soc/qualcomm/qcs405/blsp.c b/src/soc/qualcomm/qcs405/blsp.c
new file mode 100644
index 0000000000..f185ea388a
--- /dev/null
+++ b/src/soc/qualcomm/qcs405/blsp.c
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 - 2016, 2019 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:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER 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 <device/mmio.h>
+#include <soc/blsp.h>
+#include <soc/gpio.h>
+#include <soc/iomap.h>
+#include <soc/clock.h>
+
+blsp_return_t blsp_i2c_init(blsp_qup_id_t id)
+{
+	void *base;
+
+	switch (id) {
+	case BLSP_QUP_ID_1:
+		gpio_configure
+			(GPIO(24), 2, GPIO_PULL_UP, GPIO_2MA, GPIO_OUTPUT);
+		gpio_configure
+			(GPIO(25), 2, GPIO_PULL_UP, GPIO_2MA, GPIO_OUTPUT);
+		break;
+	default:
+		return BLSP_ID_ERROR;
+	}
+
+	clock_configure_i2c(19200000);
+	clock_enable_i2c();
+
+	base = blsp_qup_base(id);
+
+	if (!base)
+		return BLSP_ID_ERROR;
+
+	/* Configure Mini core to I2C core */
+	clrsetbits_le32(base, BLSP_MINI_CORE_MASK, BLSP_MINI_CORE_I2C);
+
+	return BLSP_SUCCESS;
+}