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>

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

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

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);
 

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();

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,

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();
-}