public inbox for linux-arm-kernel@lists.infradead.org
 help / color / mirror / Atom feed
From: muhammad.husaini.zulkifli@intel.com
To: adrian.hunter@intel.com, michal.simek@xilinx.com,
	sudeep.holla@arm.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,
	muhammad.husaini.zulkifli@intel.com, arnd@arndb.de,
	wan.ahmad.zainie.wan.mohamad@intel.com
Subject: [PATCH v3 2/2] firmware: Keem Bay: Add support for Arm Trusted Firmware Service call
Date: Tue,  6 Oct 2020 23:55:49 +0800	[thread overview]
Message-ID: <20201006155549.3595-3-muhammad.husaini.zulkifli@intel.com> (raw)
In-Reply-To: <20201006155549.3595-1-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   | 46 +++++++++++++++++++
 1 file changed, 46 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..9adb8c87b788
--- /dev/null
+++ b/include/linux/firmware/intel/keembay_firmware.h
@@ -0,0 +1,46 @@
+/* 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 KEEMBAY_SET_SD_VOLTAGE_FUNC_ID	0x8200ff26
+#define KEEMBAY_SET_1V8_VOLT		0x01
+#define KEEMBAY_SET_3V3_VOLT		0x00
+
+#if IS_ENABLED(CONFIG_HAVE_ARM_SMCCC_DISCOVERY)
+static int do_fw_invoke(u64 func_id, u64 arg0, u64 arg1)
+{
+	struct arm_smccc_res res;
+
+	arm_smccc_1_1_invoke(func_id, arg0, arg1, &res);
+
+	return res.a0;
+}
+
+int keembay_sd_voltage_selection(int volt)
+{
+	return do_fw_invoke(KEEMBAY_SET_SD_VOLTAGE_FUNC_ID, volt, 0);
+}
+#else
+static inline int keembay_sd_voltage_selection(int volt)
+{
+	return -ENODEV;
+}
+#endif
+
+#endif /* __FIRMWARE_KEEMBAY_SMC_H__ */
-- 
2.17.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-10-06 16:00 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-06 15:55 [PATCH v3 0/2] mmc: sdhci-of-arasan: Enable UHS-1 support for Keem Bay SOC muhammad.husaini.zulkifli
2020-10-06 15:55 ` [PATCH v3 1/2] " muhammad.husaini.zulkifli
2020-10-07  8:33   ` Michal Simek
2020-10-07  8:55     ` Andy Shevchenko
2020-10-07  9:10       ` Michal Simek
2020-10-07 12:08         ` Andy Shevchenko
2020-10-07 13:28       ` Zulkifli, Muhammad Husaini
2020-10-07 14:54         ` Andy Shevchenko
2020-10-07 16:08           ` Zulkifli, Muhammad Husaini
2020-10-07 13:25     ` Zulkifli, Muhammad Husaini
2020-10-06 15:55 ` muhammad.husaini.zulkifli [this message]
2020-10-06 20:37   ` [PATCH v3 2/2] firmware: Keem Bay: Add support for Arm Trusted Firmware Service call kernel test robot
2020-10-07  3:41   ` Zulkifli, Muhammad Husaini
2020-10-07  8:20   ` Michal Simek
2020-10-07 10:10     ` Sudeep Holla
2020-10-07 13:29       ` Zulkifli, Muhammad Husaini
2020-10-07 13:21     ` Zulkifli, Muhammad Husaini
2020-10-07 13:37       ` Michal Simek
2020-10-07 13:52         ` Zulkifli, Muhammad Husaini
2020-10-07 13:58           ` Michal Simek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201006155549.3595-3-muhammad.husaini.zulkifli@intel.com \
    --to=muhammad.husaini.zulkifli@intel.com \
    --cc=adrian.hunter@intel.com \
    --cc=arnd@arndb.de \
    --cc=lakshmi.bai.raja.subramanian@intel.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mmc@vger.kernel.org \
    --cc=michal.simek@xilinx.com \
    --cc=sudeep.holla@arm.com \
    --cc=ulf.hansson@linaro.org \
    --cc=wan.ahmad.zainie.wan.mohamad@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox