Merge branch 'delivery/pinctrl-at91-3.8' of http://github.com/at91linux/linux-at91 into at91

7 files changed, 161 insertions, 2 deletions

diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 043624219b55..e34c1bdb804d 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -494,8 +494,17 @@ endif
 
 comment "Generic Board Type"
 
+config MACH_AT91RM9200_DT
+        bool "Atmel AT91RM9200 Evaluation Kits with device-tree support"
+        depends on SOC_AT91RM9200
+        select USE_OF
+        help
+          Select this if you want to experiment device-tree with
+          an Atmel RM9200 Evaluation Kit.
+
 config MACH_AT91SAM_DT
         bool "Atmel AT91SAM Evaluation Kits with device-tree support"
+        depends on SOC_AT91SAM9
         select USE_OF
         help
           Select this if you want to experiment device-tree with
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 3bb7a51efc9d..b38a1dcb79b8 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -88,6 +88,7 @@ obj-$(CONFIG_MACH_SNAPPER_9260)	+= board-snapper9260.o
 obj-$(CONFIG_MACH_AT91SAM9M10G45EK) += board-sam9m10g45ek.o
 
 # AT91SAM board with device-tree
+obj-$(CONFIG_MACH_AT91RM9200_DT) += board-rm9200-dt.o
 obj-$(CONFIG_MACH_AT91SAM_DT) += board-dt.o
 
 # AT91X40 board-specific support
diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index a3e4710d7352..6cceb42a4c33 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -194,6 +194,24 @@ static struct clk_lookup periph_clocks_lookups[] = {
         CLKDEV_CON_ID("pioB", &pioB_clk),
         CLKDEV_CON_ID("pioC", &pioC_clk),
         CLKDEV_CON_ID("pioD", &pioD_clk),
+        /* usart lookup table for DT entries */
+        CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck),
+        CLKDEV_CON_DEV_ID("usart", "fffc0000.serial", &usart0_clk),
+        CLKDEV_CON_DEV_ID("usart", "fffc4000.serial", &usart1_clk),
+        CLKDEV_CON_DEV_ID("usart", "fffc8000.serial", &usart2_clk),
+        CLKDEV_CON_DEV_ID("usart", "fffcc000.serial", &usart3_clk),
+        /* tc lookup table for DT entries */
+        CLKDEV_CON_DEV_ID("t0_clk", "fffa0000.timer", &tc0_clk),
+        CLKDEV_CON_DEV_ID("t1_clk", "fffa0000.timer", &tc1_clk),
+        CLKDEV_CON_DEV_ID("t2_clk", "fffa0000.timer", &tc2_clk),
+        CLKDEV_CON_DEV_ID("t0_clk", "fffa4000.timer", &tc3_clk),
+        CLKDEV_CON_DEV_ID("t1_clk", "fffa4000.timer", &tc4_clk),
+        CLKDEV_CON_DEV_ID("t2_clk", "fffa4000.timer", &tc5_clk),
+        CLKDEV_CON_DEV_ID("hclk", "300000.ohci", &ohci_clk),
+        CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioA_clk),
+        CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioB_clk),
+        CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioC_clk),
+        CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioD_clk),
 };
 
 static struct clk_lookup usart_clocks_lookups[] = {
diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c
index aaa443b48c91..cafe98836c8a 100644
--- a/arch/arm/mach-at91/at91rm9200_time.c
+++ b/arch/arm/mach-at91/at91rm9200_time.c
@@ -24,6 +24,9 @@
 #include <linux/irq.h>
 #include <linux/clockchips.h>
 #include <linux/export.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 #include <asm/mach/time.h>
 
@@ -91,7 +94,8 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id)
 static struct irqaction at91rm9200_timer_irq = {
         .name           = "at91_tick",
         .flags          = IRQF_SHARED | IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-        .handler        = at91rm9200_timer_interrupt
+        .handler        = at91rm9200_timer_interrupt,
+        .irq            = NR_IRQS_LEGACY + AT91_ID_SYS,
 };
 
 static cycle_t read_clk32k(struct clocksource *cs)
@@ -179,8 +183,60 @@ static struct clock_event_device clkevt = {
 void __iomem *at91_st_base;
 EXPORT_SYMBOL_GPL(at91_st_base);
 
+#ifdef CONFIG_OF
+static struct of_device_id at91rm9200_st_timer_ids[] = {
+        { .compatible = "atmel,at91rm9200-st" },
+        { /* sentinel */ }
+};
+
+static int __init of_at91rm9200_st_init(void)
+{
+        struct device_node *np;
+        int ret;
+
+        np = of_find_matching_node(NULL, at91rm9200_st_timer_ids);
+        if (!np)
+                goto err;
+
+        at91_st_base = of_iomap(np, 0);
+        if (!at91_st_base)
+                goto node_err;
+
+        /* Get the interrupts property */
+        ret = irq_of_parse_and_map(np, 0);
+        if (!ret)
+                goto ioremap_err;
+        at91rm9200_timer_irq.irq = ret;
+
+        of_node_put(np);
+
+        return 0;
+
+ioremap_err:
+        iounmap(at91_st_base);
+node_err:
+        of_node_put(np);
+err:
+        return -EINVAL;
+}
+#else
+static int __init of_at91rm9200_st_init(void)
+{
+        return -EINVAL;
+}
+#endif
+
 void __init at91rm9200_ioremap_st(u32 addr)
 {
+#ifdef CONFIG_OF
+        struct device_node *np;
+
+        np = of_find_matching_node(NULL, at91rm9200_st_timer_ids);
+        if (np) {
+                of_node_put(np);
+                return;
+        }
+#endif
         at91_st_base = ioremap(addr, 256);
         if (!at91_st_base)
                 panic("Impossible to ioremap ST\n");
@@ -191,13 +247,16 @@ void __init at91rm9200_ioremap_st(u32 addr)
  */
 void __init at91rm9200_timer_init(void)
 {
+        /* For device tree enabled device: initialize here */
+        of_at91rm9200_st_init();
+
         /* Disable all timer interrupts, and clear any pending ones */
         at91_st_write(AT91_ST_IDR,
                 AT91_ST_PITS | AT91_ST_WDOVF | AT91_ST_RTTINC | AT91_ST_ALMS);
         at91_st_read(AT91_ST_SR);
 
         /* Make IRQs happen for the system timer */
-        setup_irq(NR_IRQS_LEGACY + AT91_ID_SYS, &at91rm9200_timer_irq);
+        setup_irq(at91rm9200_timer_irq.irq, &at91rm9200_timer_irq);
 
         /* The 32KiHz "Slow Clock" (tick every 30517.58 nanoseconds) is used
          * directly for the clocksource and all clockevents, after adjusting
diff --git a/arch/arm/mach-at91/board-rm9200-dt.c b/arch/arm/mach-at91/board-rm9200-dt.c
new file mode 100644
index 000000000000..5f9ce3da3fde
--- /dev/null
+++ b/arch/arm/mach-at91/board-rm9200-dt.c
@@ -0,0 +1,57 @@
+/*
+ *  Setup code for AT91RM9200 Evaluation Kits with Device Tree support
+ *
+ *  Copyright (C) 2011 Atmel,
+ *                2011 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *                2012 Joachim Eastwood <manabian@gmail.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include "at91_aic.h"
+#include "generic.h"
+
+
+static const struct of_device_id irq_of_match[] __initconst = {
+        { .compatible = "atmel,at91rm9200-aic", .data = at91_aic_of_init },
+        { /*sentinel*/ }
+};
+
+static void __init at91rm9200_dt_init_irq(void)
+{
+        of_irq_init(irq_of_match);
+}
+
+static void __init at91rm9200_dt_device_init(void)
+{
+        of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char *at91rm9200_dt_board_compat[] __initdata = {
+        "atmel,at91rm9200",
+        NULL
+};
+
+DT_MACHINE_START(at91rm9200_dt, "Atmel AT91RM9200 (Device Tree)")
+        .timer          = &at91rm9200_timer,
+        .map_io         = at91_map_io,
+        .handle_irq     = at91_aic_handle_irq,
+        .init_early     = at91rm9200_dt_initialize,
+        .init_irq       = at91rm9200_dt_init_irq,
+        .init_machine   = at91rm9200_dt_device_init,
+        .dt_compat      = at91rm9200_dt_board_compat,
+MACHINE_END
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index b62f560e6c75..fc593d615e7d 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -20,6 +20,7 @@ extern void __init at91_init_sram(int bank, unsigned long base,
 extern void __init at91rm9200_set_type(int type);
 extern void __init at91_initialize(unsigned long main_clock);
 extern void __init at91x40_initialize(unsigned long main_clock);
+extern void __init at91rm9200_dt_initialize(void);
 extern void __init at91_dt_initialize(void);
 
  /* Interrupts */
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 80f4bfd913b3..19cdd0b5b391 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -339,6 +339,7 @@ static void at91_dt_rstc(void)
 }
 
 static struct of_device_id ramc_ids[] = {
+        { .compatible = "atmel,at91rm9200-sdramc" },
         { .compatible = "atmel,at91sam9260-sdramc" },
         { .compatible = "atmel,at91sam9g45-ddramc" },
         { /*sentinel*/ }
@@ -437,6 +438,19 @@ end:
         of_node_put(np);
 }
 
+void __init at91rm9200_dt_initialize(void)
+{
+        at91_dt_ramc();
+
+        /* Init clock subsystem */
+        at91_dt_clock_init();
+
+        /* Register the processor-specific clocks */
+        at91_boot_soc.register_clocks();
+
+        at91_boot_soc.init();
+}
+
 void __init at91_dt_initialize(void)
 {
         at91_dt_rstc();