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soc: renesas: rcar-sysc: Drop legacy handling 

Now the R-Car platform code no longer supports DTBs lacking a SYSC
device node in DT, all legacy handling can be dropped from the R-Car
SYSC driver:
  - Make rcar_sysc_ch private to the driver,
  - Make rcar_sysc_power_{down,up}() static (they have been replaced by
    rcar_sysc_power_{down,up}_cpu()),
  - Remove the legacy wrapper rcar_sysc_init(), and the check for double
    initialization (only the early_initcall is left).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
hifive-unleashed-5.1
Geert Uytterhoeven 2018-05-30 17:25:16 +02:00 committed by Simon Horman
parent 16acd53b15
commit 7e8a50df26
2 changed files with 8 additions and 41 deletions
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38
drivers/soc/renesas/rcar-sysc.c
View File

@ -58,6 +58,12 @@
#define RCAR_PD_ALWAYS_ON 32 /* Always-on power area */
struct rcar_sysc_ch {
u16 chan_offs;
u8 chan_bit;
u8 isr_bit;
};
static void __iomem *rcar_sysc_base;
static DEFINE_SPINLOCK(rcar_sysc_lock); /* SMP CPUs + I/O devices */
@ -143,12 +149,12 @@ static int rcar_sysc_power(const struct rcar_sysc_ch *sysc_ch, bool on)
return ret;
}
int rcar_sysc_power_down(const struct rcar_sysc_ch *sysc_ch)
static int rcar_sysc_power_down(const struct rcar_sysc_ch *sysc_ch)
{
return rcar_sysc_power(sysc_ch, false);
}
int rcar_sysc_power_up(const struct rcar_sysc_ch *sysc_ch)
static int rcar_sysc_power_up(const struct rcar_sysc_ch *sysc_ch)
{
return rcar_sysc_power(sysc_ch, true);
}
@ -323,9 +329,6 @@ static int __init rcar_sysc_pd_init(void)
unsigned int i;
int error;
if (rcar_sysc_base)
return 0;
np = of_find_matching_node_and_match(NULL, rcar_sysc_matches, &match);
if (!np)
return -ENODEV;
@ -428,31 +431,6 @@ void __init rcar_sysc_nullify(struct rcar_sysc_area *areas,
}
}
void __init rcar_sysc_init(phys_addr_t base, u32 syscier)
{
u32 syscimr;
if (!rcar_sysc_pd_init())
return;
rcar_sysc_base = ioremap_nocache(base, PAGE_SIZE);
/*
* Mask all interrupt sources to prevent the CPU from receiving them.
* Make sure not to clear reserved bits that were set before.
*/
syscimr = ioread32(rcar_sysc_base + SYSCIMR);
syscimr |= syscier;
pr_debug("%s: syscimr = 0x%08x\n", __func__, syscimr);
iowrite32(syscimr, rcar_sysc_base + SYSCIMR);
/*
* SYSC needs all interrupt sources enabled to control power.
*/
pr_debug("%s: syscier = 0x%08x\n", __func__, syscier);
iowrite32(syscier, rcar_sysc_base + SYSCIER);
}
#ifdef CONFIG_ARCH_R8A7779
static int rcar_sysc_power_cpu(unsigned int idx, bool on)
{

11
include/linux/soc/renesas/rcar-sysc.h
View File

@ -2,17 +2,6 @@
#ifndef __LINUX_SOC_RENESAS_RCAR_SYSC_H__
#define __LINUX_SOC_RENESAS_RCAR_SYSC_H__
#include <linux/types.h>
struct rcar_sysc_ch {
u16 chan_offs;
u8 chan_bit;
u8 isr_bit;
};
int rcar_sysc_power_down(const struct rcar_sysc_ch *sysc_ch);
int rcar_sysc_power_up(const struct rcar_sysc_ch *sysc_ch);
void rcar_sysc_init(phys_addr_t base, u32 syscier);
int rcar_sysc_power_down_cpu(unsigned int cpu);
int rcar_sysc_power_up_cpu(unsigned int cpu);