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SubjectRe: [PATCH v6 18/25] drivers: firmware: psci: Share a few internal PSCI functions
On Wed, Mar 14, 2018 at 05:58:28PM +0100, Ulf Hansson wrote:
> Following changes needs to be able to call psci_get|set_domain_state() and
> psci_dt_parse_state_node(), but from a separate file. Let's make that
> possible by sharing them via a new internal PSCI header file.
>
> Cc: Lina Iyer <ilina@codeaurora.org>
> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
> ---
> drivers/firmware/psci.c | 14 ++++++++------
> drivers/firmware/psci.h | 13 +++++++++++++
> 2 files changed, 21 insertions(+), 6 deletions(-)
> create mode 100644 drivers/firmware/psci.h

To mimimize the clutter in drivers/firmware/, it might be better to
move this into a drivers/firmware/psci/ directory, which would also
simplify the MAINTAINERS modification.

Thanks,
Mark.

>
> diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c
> index 40b2b89..463f78c 100644
> --- a/drivers/firmware/psci.c
> +++ b/drivers/firmware/psci.c
> @@ -34,6 +34,8 @@
> #include <asm/smp_plat.h>
> #include <asm/suspend.h>
>
> +#include "psci.h"
> +
> /*
> * While a 64-bit OS can make calls with SMC32 calling conventions, for some
> * calls it is necessary to use SMC64 to pass or return 64-bit values.
> @@ -90,12 +92,12 @@ static u32 psci_function_id[PSCI_FN_MAX];
> static DEFINE_PER_CPU(u32, domain_state);
> static u32 psci_cpu_suspend_feature;
>
> -static inline u32 psci_get_domain_state(void)
> +u32 psci_get_domain_state(void)
> {
> return this_cpu_read(domain_state);
> }
>
> -static inline void psci_set_domain_state(u32 state)
> +void psci_set_domain_state(u32 state)
> {
> this_cpu_write(domain_state, state);
> }
> @@ -285,10 +287,7 @@ static int __init psci_features(u32 psci_func_id)
> psci_func_id, 0, 0);
> }
>
> -#ifdef CONFIG_CPU_IDLE
> -static DEFINE_PER_CPU_READ_MOSTLY(u32 *, psci_power_state);
> -
> -static int psci_dt_parse_state_node(struct device_node *np, u32 *state)
> +int psci_dt_parse_state_node(struct device_node *np, u32 *state)
> {
> int err = of_property_read_u32(np, "arm,psci-suspend-param", state);
>
> @@ -305,6 +304,9 @@ static int psci_dt_parse_state_node(struct device_node *np, u32 *state)
> return 0;
> }
>
> +#ifdef CONFIG_CPU_IDLE
> +static DEFINE_PER_CPU_READ_MOSTLY(u32 *, psci_power_state);
> +
> static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
> {
> int i, ret = 0, count = 0;
> diff --git a/drivers/firmware/psci.h b/drivers/firmware/psci.h
> new file mode 100644
> index 0000000..a2b4be5
> --- /dev/null
> +++ b/drivers/firmware/psci.h
> @@ -0,0 +1,13 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +#ifndef __PSCI_H
> +#define __PSCI_H
> +
> +struct device_node;
> +
> +u32 psci_get_domain_state(void);
> +void psci_set_domain_state(u32 state);
> +
> +int psci_dt_parse_state_node(struct device_node *np, u32 *state);
> +
> +#endif /* __PSCI_H */
> --
> 2.7.4
>
> --
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