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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 08. 10. 20 4:09, muhammad.husaini.zulkifli@intel.com wrote: > From: Muhammad Husaini Zulkifli > > Add header file to handle API function for device driver to communicate > with Arm Trusted Firmware. > > Signed-off-by: Muhammad Husaini Zulkifli > --- > .../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 > + */ > + > +#ifndef __FIRMWARE_KEEMBAY_SMC_H__ > +#define __FIRMWARE_KEEMBAY_SMC_H__ > + > +#include > + > +/* > + * 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__ */ > This looks good to me. Acked-by: Michal Simek Thanks, Michal _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel