diff options
Diffstat (limited to 'drivers/pmdomain/renesas')
-rw-r--r-- | drivers/pmdomain/renesas/Makefile | 4 | ||||
-rw-r--r-- | drivers/pmdomain/renesas/r8a77960-sysc.c | 49 | ||||
-rw-r--r-- | drivers/pmdomain/renesas/r8a77961-sysc.c (renamed from drivers/pmdomain/renesas/r8a7796-sysc.c) | 28 | ||||
-rw-r--r-- | drivers/pmdomain/renesas/rcar-sysc.c | 70 | ||||
-rw-r--r-- | drivers/pmdomain/renesas/rcar-sysc.h | 9 |
5 files changed, 84 insertions, 76 deletions
diff --git a/drivers/pmdomain/renesas/Makefile b/drivers/pmdomain/renesas/Makefile index 89180f19c23b..0391e6e67440 100644 --- a/drivers/pmdomain/renesas/Makefile +++ b/drivers/pmdomain/renesas/Makefile @@ -14,8 +14,8 @@ obj-$(CONFIG_SYSC_R8A7791) += r8a7791-sysc.o obj-$(CONFIG_SYSC_R8A7792) += r8a7792-sysc.o obj-$(CONFIG_SYSC_R8A7794) += r8a7794-sysc.o obj-$(CONFIG_SYSC_R8A7795) += r8a7795-sysc.o -obj-$(CONFIG_SYSC_R8A77960) += r8a7796-sysc.o -obj-$(CONFIG_SYSC_R8A77961) += r8a7796-sysc.o +obj-$(CONFIG_SYSC_R8A77960) += r8a77960-sysc.o +obj-$(CONFIG_SYSC_R8A77961) += r8a77961-sysc.o obj-$(CONFIG_SYSC_R8A77965) += r8a77965-sysc.o obj-$(CONFIG_SYSC_R8A77970) += r8a77970-sysc.o obj-$(CONFIG_SYSC_R8A77980) += r8a77980-sysc.o diff --git a/drivers/pmdomain/renesas/r8a77960-sysc.c b/drivers/pmdomain/renesas/r8a77960-sysc.c new file mode 100644 index 000000000000..2ab3f565d2b0 --- /dev/null +++ b/drivers/pmdomain/renesas/r8a77960-sysc.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Renesas R-Car M3-W System Controller + * + * Copyright (C) 2016 Glider bvba + * Copyright (C) 2018-2019 Renesas Electronics Corporation + */ + +#include <linux/bits.h> +#include <linux/kernel.h> + +#include <dt-bindings/power/r8a7796-sysc.h> + +#include "rcar-sysc.h" + +static const struct rcar_sysc_area r8a77960_areas[] __initconst = { + { "always-on", 0, 0, R8A7796_PD_ALWAYS_ON, -1, PD_ALWAYS_ON }, + { "ca57-scu", 0x1c0, 0, R8A7796_PD_CA57_SCU, R8A7796_PD_ALWAYS_ON, + PD_SCU }, + { "ca57-cpu0", 0x80, 0, R8A7796_PD_CA57_CPU0, R8A7796_PD_CA57_SCU, + PD_CPU_NOCR }, + { "ca57-cpu1", 0x80, 1, R8A7796_PD_CA57_CPU1, R8A7796_PD_CA57_SCU, + PD_CPU_NOCR }, + { "ca53-scu", 0x140, 0, R8A7796_PD_CA53_SCU, R8A7796_PD_ALWAYS_ON, + PD_SCU }, + { "ca53-cpu0", 0x200, 0, R8A7796_PD_CA53_CPU0, R8A7796_PD_CA53_SCU, + PD_CPU_NOCR }, + { "ca53-cpu1", 0x200, 1, R8A7796_PD_CA53_CPU1, R8A7796_PD_CA53_SCU, + PD_CPU_NOCR }, + { "ca53-cpu2", 0x200, 2, R8A7796_PD_CA53_CPU2, R8A7796_PD_CA53_SCU, + PD_CPU_NOCR }, + { "ca53-cpu3", 0x200, 3, R8A7796_PD_CA53_CPU3, R8A7796_PD_CA53_SCU, + PD_CPU_NOCR }, + { "cr7", 0x240, 0, R8A7796_PD_CR7, R8A7796_PD_ALWAYS_ON }, + { "a3vc", 0x380, 0, R8A7796_PD_A3VC, R8A7796_PD_ALWAYS_ON, + PD_OFF_DELAY }, + { "a2vc0", 0x3c0, 0, R8A7796_PD_A2VC0, R8A7796_PD_A3VC }, + { "a2vc1", 0x3c0, 1, R8A7796_PD_A2VC1, R8A7796_PD_A3VC }, + { "3dg-a", 0x100, 0, R8A7796_PD_3DG_A, R8A7796_PD_ALWAYS_ON }, + { "3dg-b", 0x100, 1, R8A7796_PD_3DG_B, R8A7796_PD_3DG_A }, + { "a3ir", 0x180, 0, R8A7796_PD_A3IR, R8A7796_PD_ALWAYS_ON, + PD_OFF_DELAY }, +}; + + +const struct rcar_sysc_info r8a77960_sysc_info __initconst = { + .areas = r8a77960_areas, + .num_areas = ARRAY_SIZE(r8a77960_areas), +}; diff --git a/drivers/pmdomain/renesas/r8a7796-sysc.c b/drivers/pmdomain/renesas/r8a77961-sysc.c index 471bd5b3b6ad..a1155068ee7a 100644 --- a/drivers/pmdomain/renesas/r8a7796-sysc.c +++ b/drivers/pmdomain/renesas/r8a77961-sysc.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Renesas R-Car M3-W/W+ System Controller + * Renesas R-Car M3-W+ System Controller * * Copyright (C) 2016 Glider bvba * Copyright (C) 2018-2019 Renesas Electronics Corporation @@ -13,7 +13,7 @@ #include "rcar-sysc.h" -static struct rcar_sysc_area r8a7796_areas[] __initdata = { +static const struct rcar_sysc_area r8a77961_areas[] __initconst = { { "always-on", 0, 0, R8A7796_PD_ALWAYS_ON, -1, PD_ALWAYS_ON }, { "ca57-scu", 0x1c0, 0, R8A7796_PD_CA57_SCU, R8A7796_PD_ALWAYS_ON, PD_SCU }, @@ -33,35 +33,15 @@ static struct rcar_sysc_area r8a7796_areas[] __initdata = { PD_CPU_NOCR }, { "cr7", 0x240, 0, R8A7796_PD_CR7, R8A7796_PD_ALWAYS_ON }, { "a3vc", 0x380, 0, R8A7796_PD_A3VC, R8A7796_PD_ALWAYS_ON }, - { "a2vc0", 0x3c0, 0, R8A7796_PD_A2VC0, R8A7796_PD_A3VC }, { "a2vc1", 0x3c0, 1, R8A7796_PD_A2VC1, R8A7796_PD_A3VC }, { "3dg-a", 0x100, 0, R8A7796_PD_3DG_A, R8A7796_PD_ALWAYS_ON }, { "3dg-b", 0x100, 1, R8A7796_PD_3DG_B, R8A7796_PD_3DG_A }, { "a3ir", 0x180, 0, R8A7796_PD_A3IR, R8A7796_PD_ALWAYS_ON }, }; - -#ifdef CONFIG_SYSC_R8A77960 -const struct rcar_sysc_info r8a77960_sysc_info __initconst = { - .areas = r8a7796_areas, - .num_areas = ARRAY_SIZE(r8a7796_areas), -}; -#endif /* CONFIG_SYSC_R8A77960 */ - -#ifdef CONFIG_SYSC_R8A77961 -static int __init r8a77961_sysc_init(void) -{ - rcar_sysc_nullify(r8a7796_areas, ARRAY_SIZE(r8a7796_areas), - R8A7796_PD_A2VC0); - - return 0; -} - const struct rcar_sysc_info r8a77961_sysc_info __initconst = { - .init = r8a77961_sysc_init, - .areas = r8a7796_areas, - .num_areas = ARRAY_SIZE(r8a7796_areas), + .areas = r8a77961_areas, + .num_areas = ARRAY_SIZE(r8a77961_areas), .extmask_offs = 0x2f8, .extmask_val = BIT(0), }; -#endif /* CONFIG_SYSC_R8A77961 */ diff --git a/drivers/pmdomain/renesas/rcar-sysc.c b/drivers/pmdomain/renesas/rcar-sysc.c index 35d9aa0dfab8..b99326917330 100644 --- a/drivers/pmdomain/renesas/rcar-sysc.c +++ b/drivers/pmdomain/renesas/rcar-sysc.c @@ -56,17 +56,20 @@ #define RCAR_PD_ALWAYS_ON 32 /* Always-on power area */ -struct rcar_sysc_ch { +struct rcar_sysc_pd { + struct generic_pm_domain genpd; u16 chan_offs; u8 chan_bit; u8 isr_bit; + unsigned int flags; + char name[]; }; static void __iomem *rcar_sysc_base; static DEFINE_SPINLOCK(rcar_sysc_lock); /* SMP CPUs + I/O devices */ static u32 rcar_sysc_extmask_offs, rcar_sysc_extmask_val; -static int rcar_sysc_pwr_on_off(const struct rcar_sysc_ch *sysc_ch, bool on) +static int rcar_sysc_pwr_on_off(const struct rcar_sysc_pd *pd, bool on) { unsigned int sr_bit, reg_offs; u32 val; @@ -87,17 +90,20 @@ static int rcar_sysc_pwr_on_off(const struct rcar_sysc_ch *sysc_ch, bool on) if (ret) return -EAGAIN; + /* Power-off delay quirk */ + if (!on && (pd->flags & PD_OFF_DELAY)) + udelay(1); + /* Submit power shutoff or power resume request */ - iowrite32(BIT(sysc_ch->chan_bit), - rcar_sysc_base + sysc_ch->chan_offs + reg_offs); + iowrite32(BIT(pd->chan_bit), rcar_sysc_base + pd->chan_offs + reg_offs); return 0; } -static int rcar_sysc_power(const struct rcar_sysc_ch *sysc_ch, bool on) +static int rcar_sysc_power(const struct rcar_sysc_pd *pd, bool on) { - unsigned int isr_mask = BIT(sysc_ch->isr_bit); - unsigned int chan_mask = BIT(sysc_ch->chan_bit); + unsigned int isr_mask = BIT(pd->isr_bit); + unsigned int chan_mask = BIT(pd->chan_bit); unsigned int status, k; unsigned long flags; int ret; @@ -125,12 +131,11 @@ static int rcar_sysc_power(const struct rcar_sysc_ch *sysc_ch, bool on) /* Submit power shutoff or resume request until it was accepted */ for (k = 0; k < PWRER_RETRIES; k++) { - ret = rcar_sysc_pwr_on_off(sysc_ch, on); + ret = rcar_sysc_pwr_on_off(pd, on); if (ret) goto out; - status = ioread32(rcar_sysc_base + - sysc_ch->chan_offs + PWRER_OFFS); + status = ioread32(rcar_sysc_base + pd->chan_offs + PWRER_OFFS); if (!(status & chan_mask)) break; @@ -158,28 +163,21 @@ static int rcar_sysc_power(const struct rcar_sysc_ch *sysc_ch, bool on) spin_unlock_irqrestore(&rcar_sysc_lock, flags); pr_debug("sysc power %s domain %d: %08x -> %d\n", on ? "on" : "off", - sysc_ch->isr_bit, ioread32(rcar_sysc_base + SYSCISR), ret); + pd->isr_bit, ioread32(rcar_sysc_base + SYSCISR), ret); return ret; } -static bool rcar_sysc_power_is_off(const struct rcar_sysc_ch *sysc_ch) +static bool rcar_sysc_power_is_off(const struct rcar_sysc_pd *pd) { unsigned int st; - st = ioread32(rcar_sysc_base + sysc_ch->chan_offs + PWRSR_OFFS); - if (st & BIT(sysc_ch->chan_bit)) + st = ioread32(rcar_sysc_base + pd->chan_offs + PWRSR_OFFS); + if (st & BIT(pd->chan_bit)) return true; return false; } -struct rcar_sysc_pd { - struct generic_pm_domain genpd; - struct rcar_sysc_ch ch; - unsigned int flags; - char name[]; -}; - static inline struct rcar_sysc_pd *to_rcar_pd(struct generic_pm_domain *d) { return container_of(d, struct rcar_sysc_pd, genpd); @@ -190,7 +188,7 @@ static int rcar_sysc_pd_power_off(struct generic_pm_domain *genpd) struct rcar_sysc_pd *pd = to_rcar_pd(genpd); pr_debug("%s: %s\n", __func__, genpd->name); - return rcar_sysc_power(&pd->ch, false); + return rcar_sysc_power(pd, false); } static int rcar_sysc_pd_power_on(struct generic_pm_domain *genpd) @@ -198,7 +196,7 @@ static int rcar_sysc_pd_power_on(struct generic_pm_domain *genpd) struct rcar_sysc_pd *pd = to_rcar_pd(genpd); pr_debug("%s: %s\n", __func__, genpd->name); - return rcar_sysc_power(&pd->ch, true); + return rcar_sysc_power(pd, true); } static bool has_cpg_mstp; @@ -252,12 +250,12 @@ static int __init rcar_sysc_pd_setup(struct rcar_sysc_pd *pd) goto finalize; } - if (!rcar_sysc_power_is_off(&pd->ch)) { + if (!rcar_sysc_power_is_off(pd)) { pr_debug("%s: %s is already powered\n", __func__, genpd->name); goto finalize; } - rcar_sysc_power(&pd->ch, true); + rcar_sysc_power(pd, true); finalize: error = pm_genpd_init(genpd, &simple_qos_governor, false); @@ -412,9 +410,9 @@ static int __init rcar_sysc_pd_init(void) memcpy(pd->name, area->name, n); pd->genpd.name = pd->name; - pd->ch.chan_offs = area->chan_offs; - pd->ch.chan_bit = area->chan_bit; - pd->ch.isr_bit = area->isr_bit; + pd->chan_offs = area->chan_offs; + pd->chan_bit = area->chan_bit; + pd->isr_bit = area->isr_bit; pd->flags = area->flags; error = rcar_sysc_pd_setup(pd); @@ -445,18 +443,6 @@ out_put: } early_initcall(rcar_sysc_pd_init); -void __init rcar_sysc_nullify(struct rcar_sysc_area *areas, - unsigned int num_areas, u8 id) -{ - unsigned int i; - - for (i = 0; i < num_areas; i++) - if (areas[i].isr_bit == id) { - areas[i].name = NULL; - return; - } -} - #ifdef CONFIG_ARCH_R8A7779 static int rcar_sysc_power_cpu(unsigned int idx, bool on) { @@ -473,10 +459,10 @@ static int rcar_sysc_power_cpu(unsigned int idx, bool on) continue; pd = to_rcar_pd(genpd); - if (!(pd->flags & PD_CPU) || pd->ch.chan_bit != idx) + if (!(pd->flags & PD_CPU) || pd->chan_bit != idx) continue; - return rcar_sysc_power(&pd->ch, on); + return rcar_sysc_power(pd, on); } return -ENOENT; diff --git a/drivers/pmdomain/renesas/rcar-sysc.h b/drivers/pmdomain/renesas/rcar-sysc.h index 266c599a0a9b..07ffce310686 100644 --- a/drivers/pmdomain/renesas/rcar-sysc.h +++ b/drivers/pmdomain/renesas/rcar-sysc.h @@ -16,6 +16,7 @@ #define PD_CPU BIT(0) /* Area contains main CPU core */ #define PD_SCU BIT(1) /* Area contains SCU and L2 cache */ #define PD_NO_CR BIT(2) /* Area lacks PWR{ON,OFF}CR registers */ +#define PD_OFF_DELAY BIT(3) /* Area is subject to power-off delay quirk */ #define PD_CPU_CR PD_CPU /* CPU area has CR (R-Car H1) */ #define PD_CPU_NOCR PD_CPU | PD_NO_CR /* CPU area lacks CR (R-Car Gen2/3) */ @@ -71,12 +72,4 @@ extern const struct rcar_sysc_info r8a77980_sysc_info; extern const struct rcar_sysc_info r8a77990_sysc_info; extern const struct rcar_sysc_info r8a77995_sysc_info; - - /* - * Helpers for fixing up power area tables depending on SoC revision - */ - -extern void rcar_sysc_nullify(struct rcar_sysc_area *areas, - unsigned int num_areas, u8 id); - #endif /* __SOC_RENESAS_RCAR_SYSC_H__ */ |