ARM: at91: remove at91_dt_initialize and machine init_early()
Move the ramc initialization to pm.c as it is the only user left.
This allows us to get rid of at91_dt_initialize() that was the only one called
by the init_early() function pointer of struct machine_desc.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: adapt patch to newer series]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 87c1fd8..25bb93d 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -20,6 +20,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/clk/at91_pmc.h>
@@ -41,6 +42,7 @@
} at91_pm_data;
static void (*at91_pm_standby)(void);
+void __iomem *at91_ramc_base[2];
static int at91_pm_valid_state(suspend_state_t state)
{
@@ -224,6 +226,43 @@
}
}
+static struct of_device_id ramc_ids[] = {
+ { .compatible = "atmel,at91rm9200-sdramc", .data = at91rm9200_standby },
+ { .compatible = "atmel,at91sam9260-sdramc", .data = at91sam9_sdram_standby },
+ { .compatible = "atmel,at91sam9g45-ddramc", .data = at91_ddr_standby },
+ { .compatible = "atmel,sama5d3-ddramc", .data = at91_ddr_standby },
+ { /*sentinel*/ }
+};
+
+static void at91_dt_ramc(void)
+{
+ struct device_node *np;
+ const struct of_device_id *of_id;
+ int idx = 0;
+ 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])
+ panic(pr_fmt("unable to map ramc[%d] cpu registers\n"), idx);
+
+ if (!standby)
+ standby = of_id->data;
+
+ idx++;
+ }
+
+ if (!idx)
+ panic(pr_fmt("unable to find compatible ram controller node in dtb\n"));
+
+ if (!standby) {
+ pr_warn("ramc no standby function available\n");
+ return;
+ }
+
+ at91_pm_set_standby(standby);
+}
+
#ifdef CONFIG_AT91_SLOW_CLOCK
static void __init at91_pm_sram_init(void)
{
@@ -282,6 +321,8 @@
void __init at91_rm9200_pm_init(void)
{
+ at91_dt_ramc();
+
/*
* AT91RM9200 SDRAM low-power mode cannot be used with self-refresh.
*/
@@ -295,6 +336,7 @@
void __init at91_sam9260_pm_init(void)
{
+ at91_dt_ramc();
at91_pm_data.memctrl = AT91_MEMCTRL_SDRAMC;
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
return at91_pm_init();
@@ -302,6 +344,7 @@
void __init at91_sam9g45_pm_init(void)
{
+ at91_dt_ramc();
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP;
at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
return at91_pm_init();
@@ -309,6 +352,7 @@
void __init at91_sam9x5_pm_init(void)
{
+ at91_dt_ramc();
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
return at91_pm_init();