@@ -26,8 +26,6 @@
#include "generic.h"
#include "pm.h"
-static void __iomem *pmc;
-
/*
* FIXME: this is needed to communicate between the pinctrl driver and
* the PM implementation in the machine. Possibly part of the PM
@@ -40,17 +38,17 @@ extern void at91_pinctrl_gpio_resume(void);
#endif
static struct {
+ void __iomem *pmc;
+ void __iomem *ramc[2];
unsigned long uhp_udp_mask;
int memctrl;
} at91_pm_data;
-void __iomem *at91_ramc_base[2];
#define at91_ramc_read(id, field) \
- __raw_readl(at91_ramc_base[id] + field)
+ __raw_readl(at91_pm_data.ramc[id] + field)
#define at91_ramc_write(id, field, value) \
- __raw_writel(value, at91_ramc_base[id] + field)
-
+ __raw_writel(value, at91_pm_data.ramc[id] + field)
static int at91_pm_valid_state(suspend_state_t state)
{
@@ -86,7 +84,7 @@ static int at91_pm_verify_clocks(void)
unsigned long scsr;
int i;
- scsr = readl(pmc + AT91_PMC_SCSR);
+ scsr = readl(at91_pm_data.pmc + AT91_PMC_SCSR);
/* USB must not be using PLLB */
if ((scsr & at91_pm_data.uhp_udp_mask) != 0) {
@@ -100,7 +98,7 @@ static int at91_pm_verify_clocks(void)
if ((scsr & (AT91_PMC_PCK0 << i)) == 0)
continue;
- css = readl(pmc + AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
+ css = readl(at91_pm_data.pmc + AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
if (css != AT91_PMC_CSS_SLOW) {
pr_err("AT91: PM - Suspend-to-RAM with PCK%d src %d\n", i, css);
return 0;
@@ -143,8 +141,8 @@ static void at91_pm_suspend(suspend_state_t state)
flush_cache_all();
outer_disable();
- at91_suspend_sram_fn(pmc, at91_ramc_base[0],
- at91_ramc_base[1], pm_data);
+ at91_suspend_sram_fn(at91_pm_data.pmc, at91_pm_data.ramc[0],
+ at91_pm_data.ramc[1], pm_data);
outer_resume();
}
@@ -247,7 +245,7 @@ static void at91rm9200_standby(void)
" mcr p15, 0, %0, c7, c0, 4\n\t"
" str %5, [%1, %2]"
:
- : "r" (0), "r" (at91_ramc_base[0]), "r" (AT91_MC_SDRAMC_LPR),
+ : "r" (0), "r" (at91_pm_data.ramc[0]), "r" (AT91_MC_SDRAMC_LPR),
"r" (1), "r" (AT91_MC_SDRAMC_SRR),
"r" (lpr));
}
@@ -262,7 +260,7 @@ static void at91_ddr_standby(void)
u32 lpr0, lpr1 = 0;
u32 saved_lpr0, saved_lpr1 = 0;
- if (at91_ramc_base[1]) {
+ if (at91_pm_data.ramc[1]) {
saved_lpr1 = at91_ramc_read(1, AT91_DDRSDRC_LPR);
lpr1 = saved_lpr1 & ~AT91_DDRSDRC_LPCB;
lpr1 |= AT91_DDRSDRC_LPCB_SELF_REFRESH;
@@ -274,13 +272,13 @@ static void at91_ddr_standby(void)
/* self-refresh mode now */
at91_ramc_write(0, AT91_DDRSDRC_LPR, lpr0);
- if (at91_ramc_base[1])
+ if (at91_pm_data.ramc[1])
at91_ramc_write(1, AT91_DDRSDRC_LPR, lpr1);
cpu_do_idle();
at91_ramc_write(0, AT91_DDRSDRC_LPR, saved_lpr0);
- if (at91_ramc_base[1])
+ if (at91_pm_data.ramc[1])
at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1);
}
@@ -292,7 +290,7 @@ static void at91sam9_sdram_standby(void)
u32 lpr0, lpr1 = 0;
u32 saved_lpr0, saved_lpr1 = 0;
- if (at91_ramc_base[1]) {
+ if (at91_pm_data.ramc[1]) {
saved_lpr1 = at91_ramc_read(1, AT91_SDRAMC_LPR);
lpr1 = saved_lpr1 & ~AT91_SDRAMC_LPCB;
lpr1 |= AT91_SDRAMC_LPCB_SELF_REFRESH;
@@ -304,13 +302,13 @@ static void at91sam9_sdram_standby(void)
/* self-refresh mode now */
at91_ramc_write(0, AT91_SDRAMC_LPR, lpr0);
- if (at91_ramc_base[1])
+ if (at91_pm_data.ramc[1])
at91_ramc_write(1, AT91_SDRAMC_LPR, lpr1);
cpu_do_idle();
at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr0);
- if (at91_ramc_base[1])
+ if (at91_pm_data.ramc[1])
at91_ramc_write(1, AT91_SDRAMC_LPR, saved_lpr1);
}
@@ -330,8 +328,8 @@ static __init void at91_dt_ramc(void)
const void *standby = NULL;
for_each_matching_node_and_match(np, ramc_ids, &of_id) {
- at91_ramc_base[idx] = of_iomap(np, 0);
- if (!at91_ramc_base[idx])
+ at91_pm_data.ramc[idx] = of_iomap(np, 0);
+ if (!at91_pm_data.ramc[idx])
panic(pr_fmt("unable to map ramc[%d] cpu registers\n"), idx);
if (!standby)
@@ -357,12 +355,12 @@ static void at91rm9200_idle(void)
* Disable the processor clock. The processor will be automatically
* re-enabled by an interrupt or by a reset.
*/
- writel(AT91_PMC_PCK, pmc + AT91_PMC_SCDR);
+ writel(AT91_PMC_PCK, at91_pm_data.pmc + AT91_PMC_SCDR);
}
static void at91sam9_idle(void)
{
- writel(AT91_PMC_PCK, pmc + AT91_PMC_SCDR);
+ writel(AT91_PMC_PCK, at91_pm_data.pmc + AT91_PMC_SCDR);
cpu_do_idle();
}
@@ -431,8 +429,8 @@ static void __init at91_pm_init(void (*pm_idle)(void))
platform_device_register(&at91_cpuidle_device);
pmc_np = of_find_matching_node(NULL, atmel_pmc_ids);
- pmc = of_iomap(pmc_np, 0);
- if (!pmc) {
+ at91_pm_data.pmc = of_iomap(pmc_np, 0);
+ if (!at91_pm_data.pmc) {
pr_err("AT91: PM not supported, PMC not found\n");
return;
}
Instead of having separate global variables to hold IP dresses, move them to struct at91_pm_data. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> --- arch/arm/mach-at91/pm.c | 44 +++++++++++++++++++++----------------------- 1 file changed, 21 insertions(+), 23 deletions(-)