[PATCH v3 01/10] soc: qcom: Separate kryo l2 accessors from PMU driver

[Stephen Boyd]

Quoting Ilia Lin (2018-02-14 05:59:43)
> diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
> index fbedbd8..78a103b 100644
> --- a/arch/arm64/Kconfig.platforms
> +++ b/arch/arm64/Kconfig.platforms
> @@ -145,6 +145,13 @@ config ARCH_REALTEK
>           This enables support for the ARMv8 based Realtek chipsets,
>           like the RTD1295.
>  
> +config ARCH_MSM8996
> +    bool "Enable Support for Qualcomm Technologies, Inc. MSM8996"
> +       depends on ARCH_QCOM

Is this really the proposed approach? Doesn't the PMU code use these
accessors? I would think the accessors are compiled if ARCH_QCOM=y so
that the PMU stuff keeps working. Drop this Kconfig addition?

> +       help
> +       This enables support for the MSM8996 chipset. If you do not
> +       wish to build a kernel that runs on this chipset, say 'N' here.
> +
>  config ARCH_ROCKCHIP
>         bool "Rockchip Platforms"
>         select ARCH_HAS_RESET_CONTROLLER
> diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c
> index 4fdc848..8cece9e 100644
> --- a/drivers/perf/qcom_l2_pmu.c
> +++ b/drivers/perf/qcom_l2_pmu.c
> @@ -1,4 +1,4 @@
> -/* Copyright (c) 2015-2017 The Linux Foundation. All rights reserved.
> +/* Copyright (c) 2015-2018 The Linux Foundation. All rights reserved.

Sorry, this makes little sense. First off, code is only being deleted
and more than half the file isn't being modified so why update copyright
dates?

>   *
>   * This program is free software; you can redistribute it and/or modify
>   * it under the terms of the GNU General Public License version 2 and
> diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
> index dcebf28..4e91e2a 100644
> --- a/drivers/soc/qcom/Makefile
> +++ b/drivers/soc/qcom/Makefile
> @@ -12,3 +12,4 @@ obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o
>  obj-$(CONFIG_QCOM_SMP2P)       += smp2p.o
>  obj-$(CONFIG_QCOM_SMSM)        += smsm.o
>  obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o
> +obj-$(CONFIG_ARCH_MSM8996) +=  kryo-l2-accessors.o
> diff --git a/drivers/soc/qcom/kryo-l2-accessors.c b/drivers/soc/qcom/kryo-l2-accessors.c
> new file mode 100644
> index 0000000..6743848
> --- /dev/null
> +++ b/drivers/soc/qcom/kryo-l2-accessors.c
> @@ -0,0 +1,64 @@
> +/*
> + * Copyright (c) 2014-2015, 2018, The Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */

SPDX tags?

> diff --git a/include/soc/qcom/kryo-l2-accessors.h b/include/soc/qcom/kryo-l2-accessors.h
> new file mode 100644
> index 0000000..e9a5eab
> --- /dev/null
> +++ b/include/soc/qcom/kryo-l2-accessors.h
> @@ -0,0 +1,22 @@
> +/*
> + * Copyright (c) 2018, The Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef __ASM_ARCH_MSM_MSM_KRYO_L2_ACCESSORS_H
> +#define __ASM_ARCH_MSM_MSM_KRYO_L2_ACCESSORS_H

Maybe change this tO __SOC_ARCH_QCOM_KRYO_L2_ACCESSORS_H

> +
> +#ifdef CONFIG_ARCH_QCOM
> +void set_l2_indirect_reg(u64 reg_addr, u64 val);
> +u64 get_l2_indirect_reg(u64 reg_addr);
> +#endif

This ifdef isn't doing much. Drop it? Or provide the inline nop
alternatives.