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ARM: at91: pm: add pm support for SAMA7G5

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Add support for SAMA7G5 power management modes: standby, ulp0, ulp1, backup.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20210415105010.569620-24-claudiu.beznea@microchip.com
This commit is contained in:
Claudiu Beznea 2021-04-15 13:50:09 +03:00 committed by Nicolas Ferre
parent 9d464cc5ac
commit 6501330f9f
3 changed files with 40 additions and 0 deletions
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2
arch/arm/mach-at91/generic.h
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@ -14,12 +14,14 @@ extern void __init at91sam9_pm_init(void);
extern void __init sam9x60_pm_init(void);
extern void __init sama5_pm_init(void);
extern void __init sama5d2_pm_init(void);
extern void __init sama7_pm_init(void);
#else
static inline void __init at91rm9200_pm_init(void) { }
static inline void __init at91sam9_pm_init(void) { }
static inline void __init sam9x60_pm_init(void) { }
static inline void __init sama5_pm_init(void) { }
static inline void __init sama5d2_pm_init(void) { }
static inline void __init sama7_pm_init(void) { }
#endif
#endif /* _AT91_GENERIC_H */

37
arch/arm/mach-at91/pm.c
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@ -152,6 +152,17 @@ static const struct of_device_id sam9x60_ws_ids[] = {
{ /* sentinel */ }
};
static const struct of_device_id sama7g5_ws_ids[] = {
{ .compatible = "atmel,at91sam9x5-rtc", .data = &ws_info[1] },
{ .compatible = "microchip,sama7g5-ohci", .data = &ws_info[2] },
{ .compatible = "usb-ohci", .data = &ws_info[2] },
{ .compatible = "atmel,at91sam9g45-ehci", .data = &ws_info[2] },
{ .compatible = "usb-ehci", .data = &ws_info[2] },
{ .compatible = "microchip,sama7g5-sdhci", .data = &ws_info[3] },
{ .compatible = "atmel,at91sam9260-rtt", .data = &ws_info[4] },
{ /* sentinel */ }
};
static int at91_pm_config_ws(unsigned int pm_mode, bool set)
{
const struct wakeup_source_info *wsi;
@ -1103,6 +1114,32 @@ void __init sama5d2_pm_init(void)
soc_pm.config_pmc_ws = at91_sama5d2_config_pmc_ws;
}
void __init sama7_pm_init(void)
{
static const int modes[] __initconst = {
AT91_PM_STANDBY, AT91_PM_ULP0, AT91_PM_ULP1, AT91_PM_BACKUP,
};
static const u32 iomaps[] __initconst = {
[AT91_PM_ULP0] = AT91_PM_IOMAP(SFRBU),
[AT91_PM_ULP1] = AT91_PM_IOMAP(SFRBU) |
AT91_PM_IOMAP(SHDWC),
[AT91_PM_BACKUP] = AT91_PM_IOMAP(SFRBU) |
AT91_PM_IOMAP(SHDWC),
};
if (!IS_ENABLED(CONFIG_SOC_SAMA7))
return;
at91_pm_modes_validate(modes, ARRAY_SIZE(modes));
at91_dt_ramc(true);
at91_pm_modes_init(iomaps, ARRAY_SIZE(iomaps));
at91_pm_init(NULL);
soc_pm.ws_ids = sama7g5_ws_ids;
soc_pm.config_pmc_ws = at91_sam9x60_config_pmc_ws;
}
static int __init at91_pm_modes_select(char *str)
{
char *s;

1
arch/arm/mach-at91/sama7.c
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@ -17,6 +17,7 @@
static void __init sama7_dt_device_init(void)
{
of_platform_default_populate(NULL, NULL, NULL);
sama7_pm_init();
}
static const char *const sama7_dt_board_compat[] __initconst = {