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![Geert Uytterhoeven](/assets/img/avatar_default.png)
Populate the PM domains from DT, and provide support to hook up devices to their respective PM domain. The always-on power area (e.g. C5 on r8a7740) is created as a PM domain without software control, to allow Run-Time management of module clocks for hardware blocks inside this area. Special cases like PM domains containing CPUs, the console device, or Coresight-ETM, are handled by scanning the DT topology. As long as the ARM debug/perf code doesn't use resource management with runtime PM support, the power area containing Coresight-ETM (e.g. D4 on r8a7740) must be kept powered to avoid a crash during resume from s2ram (dbg_cpu_pm_notify() calls reset_ctrl_regs() unconditionally, causing an undefined instruction oops). Initialization is done from core_initcall(), as the "renesas,intc-irqpin" driver uses postcore_initcall(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* Copyright (C) 2012 Renesas Solutions Corp.
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*
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* Kuninori Morimoto <morimoto.kuninori@renesas.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef PM_RMOBILE_H
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#define PM_RMOBILE_H
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#include <linux/pm_domain.h>
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#define DEFAULT_DEV_LATENCY_NS 250000
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struct platform_device;
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struct rmobile_pm_domain {
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struct generic_pm_domain genpd;
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struct dev_power_governor *gov;
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int (*suspend)(void);
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void (*resume)(void);
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void __iomem *base;
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unsigned int bit_shift;
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bool no_debug;
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};
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static inline
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struct rmobile_pm_domain *to_rmobile_pd(struct generic_pm_domain *d)
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{
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return container_of(d, struct rmobile_pm_domain, genpd);
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}
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struct pm_domain_device {
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const char *domain_name;
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struct platform_device *pdev;
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};
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#if defined(CONFIG_PM_RMOBILE) && defined(CONFIG_ARCH_SHMOBILE_LEGACY)
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extern void rmobile_init_domains(struct rmobile_pm_domain domains[], int num);
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extern void rmobile_add_device_to_domain_td(const char *domain_name,
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struct platform_device *pdev,
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struct gpd_timing_data *td);
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static inline void rmobile_add_device_to_domain(const char *domain_name,
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struct platform_device *pdev)
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{
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rmobile_add_device_to_domain_td(domain_name, pdev, NULL);
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}
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extern void rmobile_add_devices_to_domains(struct pm_domain_device data[],
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int size);
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#else
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#define rmobile_init_domains(domains, num) do { } while (0)
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#define rmobile_add_device_to_domain_td(name, pdev, td) do { } while (0)
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#define rmobile_add_device_to_domain(name, pdev) do { } while (0)
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static inline void rmobile_add_devices_to_domains(struct pm_domain_device d[],
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int size) {}
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#endif /* CONFIG_PM_RMOBILE */
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#endif /* PM_RMOBILE_H */
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