From: muhammad.husaini.zulkifli@intel.com
To: adrian.hunter@intel.com, michal.simek@xilinx.com,
andriy.shevchenko@intel.com, ulf.hansson@linaro.org,
linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: lakshmi.bai.raja.subramanian@intel.com,
wan.ahmad.zainie.wan.mohamad@intel.com,
muhammad.husaini.zulkifli@intel.com, arnd@arndb.de
Subject: [PATCH v4 1/4] firmware: keembay: Add support for Arm Trusted Firmware Service call
Date: Thu, 8 Oct 2020 10:09:33 +0800 [thread overview]
Message-ID: <20201008020936.19894-2-muhammad.husaini.zulkifli@intel.com> (raw)
In-Reply-To: <20201008020936.19894-1-muhammad.husaini.zulkifli@intel.com>
From: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Add header file to handle API function for device driver to communicate
with Arm Trusted Firmware.
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
---
.../linux/firmware/intel/keembay_firmware.h | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
create mode 100644 include/linux/firmware/intel/keembay_firmware.h
diff --git a/include/linux/firmware/intel/keembay_firmware.h b/include/linux/firmware/intel/keembay_firmware.h
new file mode 100644
index 000000000000..8a62abcdfead
--- /dev/null
+++ b/include/linux/firmware/intel/keembay_firmware.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Intel Keembay SOC Firmware API Layer
+ *
+ * Copyright (C) 2020-2021, Intel Corporation
+ *
+ * Muhammad Husaini Zulkifli <Muhammad.Husaini.Zulkifli@intel.com>
+ */
+
+#ifndef __FIRMWARE_KEEMBAY_SMC_H__
+#define __FIRMWARE_KEEMBAY_SMC_H__
+
+#include <linux/arm-smccc.h>
+
+/*
+ * This file defines API function that can be called by device driver in order to
+ * communicate with Arm Trusted Firmware.
+ */
+
+/* Setting for Keem Bay IO Pad Line Voltage Selection */
+#define ARM_SMCCC_SIP_KEEMBAY_SET_SD_VOLTAGE \
+ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
+ ARM_SMCCC_SMC_32, \
+ ARM_SMCCC_OWNER_SIP, \
+ 0xFF26)
+
+#define KEEMBAY_SET_1V8_VOLT 1
+#define KEEMBAY_SET_3V3_VOLT 0
+
+#if IS_ENABLED(CONFIG_HAVE_ARM_SMCCC_DISCOVERY)
+static inline int keembay_sd_voltage_selection(int volt)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_1_1_invoke(ARM_SMCCC_SIP_KEEMBAY_SET_SD_VOLTAGE, volt, &res);
+ if ((int)res.a0 < 0)
+ return -EINVAL;
+
+ return 0;
+}
+#else
+static inline int keembay_sd_voltage_selection(int volt)
+{
+ return -ENODEV;
+}
+#endif
+#endif /* __FIRMWARE_KEEMBAY_SMC_H__ */
--
2.17.1
next prev parent reply other threads:[~2020-10-08 2:12 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-08 2:09 [PATCH v4 0/4] mmc: sdhci-of-arasan: Enable UHS-1 support for Keem Bay SOC muhammad.husaini.zulkifli
2020-10-08 2:09 ` muhammad.husaini.zulkifli [this message]
2020-10-08 7:35 ` [PATCH v4 1/4] firmware: keembay: Add support for Arm Trusted Firmware Service call Michal Simek
2020-10-08 8:46 ` Andy Shevchenko
2020-10-08 10:39 ` Zulkifli, Muhammad Husaini
2020-10-08 9:45 ` Sudeep Holla
2020-10-08 12:34 ` Zulkifli, Muhammad Husaini
2020-10-08 2:09 ` [PATCH v4 2/4] dt-bindings: mmc: Add uhs-gpio for Keem Bay UHS-1 Support muhammad.husaini.zulkifli
2020-10-08 7:36 ` Michal Simek
2020-10-08 2:09 ` [PATCH v4 3/4] mmc: sdhci-of-arasan: Add structure device pointer in probe muhammad.husaini.zulkifli
2020-10-08 7:34 ` Michal Simek
2020-10-08 10:36 ` Zulkifli, Muhammad Husaini
2020-10-08 11:12 ` Andy Shevchenko
2020-10-08 2:09 ` [PATCH v4 4/4] mmc: sdhci-of-arasan: Enable UHS-1 support for Keem Bay SOC muhammad.husaini.zulkifli
2020-10-08 7:36 ` Michal Simek
2020-10-08 9:27 ` Ulf Hansson
2020-10-08 10:54 ` Zulkifli, Muhammad Husaini
2020-10-08 15:19 ` Ulf Hansson
2020-10-08 17:21 ` Zulkifli, Muhammad Husaini
2020-10-09 6:56 ` Ulf Hansson
2020-10-09 7:25 ` Michal Simek
2020-10-09 17:50 ` Zulkifli, Muhammad Husaini
2020-10-13 8:12 ` Zulkifli, Muhammad Husaini
2020-10-13 8:41 ` Ulf Hansson
2020-10-16 7:23 ` Zulkifli, Muhammad Husaini
2020-10-16 10:50 ` Ulf Hansson
2020-11-06 7:16 ` Zulkifli, Muhammad Husaini
2020-11-09 13:36 ` Zulkifli, Muhammad Husaini
2020-10-08 10:58 ` Adrian Hunter
2020-10-08 15:12 ` Ulf Hansson
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