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>

6 files changed, 44 insertions, 54 deletions

diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index ec89806c9d5d..49ae3d455bd5 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -62,7 +62,6 @@ static const char *at91rm9200_dt_board_compat[] __initconst = {
 DT_MACHINE_START(at91rm9200_dt, "Atmel AT91RM9200 (Device Tree)")
         .init_time      = at91rm9200_dt_timer_init,
         .map_io         = at91_map_io,
-        .init_early     = at91_dt_initialize,
         .init_machine   = rm9200_dt_device_init,
         .dt_compat      = at91rm9200_dt_board_compat,
 MACHINE_END
diff --git a/arch/arm/mach-at91/at91sam9.c b/arch/arm/mach-at91/at91sam9.c
index 04a9af79aadb..ecbe535c2ce0 100644
--- a/arch/arm/mach-at91/at91sam9.c
+++ b/arch/arm/mach-at91/at91sam9.c
@@ -41,7 +41,6 @@ static const char *at91_dt_board_compat[] __initconst = {
 DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM (Device Tree)")
         /* Maintainer: Atmel */
         .map_io         = at91_map_io,
-        .init_early     = at91_dt_initialize,
         .init_machine   = sam9_dt_device_init,
         .dt_compat      = at91_dt_board_compat,
 MACHINE_END
@@ -62,7 +61,6 @@ static const char *at91_9g45_board_compat[] __initconst = {
 DT_MACHINE_START(at91sam9g45_dt, "Atmel AT91SAM9G45")
         /* Maintainer: Atmel */
         .map_io         = at91_map_io,
-        .init_early     = at91_dt_initialize,
         .init_machine   = sam9g45_dt_device_init,
         .dt_compat      = at91_9g45_board_compat,
 MACHINE_END
@@ -84,7 +82,6 @@ static const char *at91_9x5_board_compat[] __initconst = {
 DT_MACHINE_START(at91sam9x5_dt, "Atmel AT91SAM9")
         /* Maintainer: Atmel */
         .map_io         = at91_map_io,
-        .init_early     = at91_dt_initialize,
         .init_machine   = sam9x5_dt_device_init,
         .dt_compat      = at91_9x5_board_compat,
 MACHINE_END
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index a8ee83ef6cd4..9c6e5b9f87ff 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -18,9 +18,6 @@
 extern void __init at91_map_io(void);
 extern void __init at91_alt_map_io(void);
 
- /* Processors */
-extern void __init at91_dt_initialize(void);
-
  /* Timer */
 extern void at91rm9200_timer_init(void);
 
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 87c1fd8aa1b6..25bb93db8208 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 @@ static struct {
 } 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 @@ void at91_pm_set_standby(void (*at91_standby)(void))
         }
 }
 
+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 @@ static void __init at91_pm_init(void)
 
 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_rm9200_pm_init(void)
 
 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_sam9260_pm_init(void)
 
 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_sam9g45_pm_init(void)
 
 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();
diff --git a/arch/arm/mach-at91/sama5.c b/arch/arm/mach-at91/sama5.c
index 22944d7e1a63..9816ef0f203d 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -60,7 +60,6 @@ static const char *sama5_dt_board_compat[] __initconst = {
 DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
         /* Maintainer: Atmel */
         .map_io         = at91_map_io,
-        .init_early     = at91_dt_initialize,
         .init_machine   = sama5_dt_device_init,
         .dt_compat      = sama5_dt_board_compat,
 MACHINE_END
@@ -106,7 +105,6 @@ static const char *sama5_alt_dt_board_compat[] __initconst = {
 DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5 (Device Tree)")
         /* Maintainer: Atmel */
         .map_io         = sama5_alt_map_io,
-        .init_early     = at91_dt_initialize,
         .init_machine   = sama5_dt_device_init,
         .dt_compat      = sama5_alt_dt_board_compat,
         .l2c_aux_mask   = ~0UL,
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index b6a903410b92..4e58bc90ed21 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -28,9 +28,6 @@
 struct at91_socinfo at91_soc_initdata;
 EXPORT_SYMBOL(at91_soc_initdata);
 
-void __iomem *at91_ramc_base[2];
-EXPORT_SYMBOL_GPL(at91_ramc_base);
-
 static struct map_desc at91_io_desc __initdata __maybe_unused = {
         .virtual        = (unsigned long)AT91_VA_BASE_SYS,
         .pfn            = __phys_to_pfn(AT91_BASE_SYS),
@@ -331,45 +328,3 @@ void __init at91_ioremap_matrix(u32 base_addr)
         if (!at91_matrix_base)
                 panic(pr_fmt("Impossible to ioremap at91_matrix_base\n"));
 }
-
-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);
-}
-
-void __init at91_dt_initialize(void)
-{
-        at91_dt_ramc();
-}