From 9bf26a180578b92890ed77890d4e9e9807adcda3 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 6 Sep 2012 09:06:52 +0100
Subject: ARM: 7514/1: integrator: call common init function from machine

There is currently a common integrator_init() function set up
to be called from an arch_initcall(). The problem is that it is
using machine_is_integrator() which is not working with device
tree, let's call this from respective machine initilization
function and add a parameter to tell whether it's the
Integrator/AP or Integrator/CP instead.

There are still machine_is*() calls in the Integrator
machines directory, but this one needs to be fixed lest we
don't even get a UART console on the Integrator/AP after a
Device Tree boot.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-integrator/integrator_ap.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/arm/mach-integrator/integrator_ap.c')

diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 3b2267529f5e..ff966d83281c 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -312,6 +312,8 @@ static void __init ap_init(void)
 
 		lm_device_register(lmdev);
 	}
+
+	integrator_init(false);
 }
 
 /*
-- 
cgit v1.2.1


From 4980f9bc2cec0f8ff0e0f2b021d46c7606ae1849 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 6 Sep 2012 09:08:24 +0100
Subject: ARM: 7517/1: integrator: initial device tree support

This is initial device tree support for the ARM Integrator family,
we create a very basic device tree, #ifdef out the non-DT machines
when compiling for device tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-integrator/integrator_ap.c | 139 +++++++++++++++++++++++++------
 1 file changed, 114 insertions(+), 25 deletions(-)

(limited to 'arch/arm/mach-integrator/integrator_ap.c')

diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index ff966d83281c..57add86c4a69 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -34,6 +34,8 @@
 #include <linux/mtd/physmap.h>
 #include <linux/clk.h>
 #include <linux/platform_data/clk-integrator.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
 #include <video/vga.h>
 
 #include <mach/hardware.h>
@@ -161,23 +163,6 @@ static void __init ap_map_io(void)
 	vga_base = PCI_MEMORY_VADDR;
 }
 
-#define INTEGRATOR_SC_VALID_INT	0x003fffff
-
-static void __init ap_init_irq(void)
-{
-	/* Disable all interrupts initially. */
-	/* Do the core module ones */
-	writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
-
-	/* do the header card stuff next */
-	writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
-	writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
-
-	fpga_irq_init(VA_IC_BASE, "SC", IRQ_PIC_START,
-		-1, INTEGRATOR_SC_VALID_INT, NULL);
-	integrator_clk_init(false);
-}
-
 #ifdef CONFIG_PM
 static unsigned long ic_irq_enable;
 
@@ -330,9 +315,9 @@ static u32 notrace integrator_read_sched_clock(void)
 	return -readl((void __iomem *) TIMER2_VA_BASE + TIMER_VALUE);
 }
 
-static void integrator_clocksource_init(unsigned long inrate)
+static void integrator_clocksource_init(unsigned long inrate,
+					void __iomem *base)
 {
-	void __iomem *base = (void __iomem *)TIMER2_VA_BASE;
 	u32 ctrl = TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC;
 	unsigned long rate = inrate;
 
@@ -349,7 +334,7 @@ static void integrator_clocksource_init(unsigned long inrate)
 	setup_sched_clock(integrator_read_sched_clock, 16, rate);
 }
 
-static void __iomem * const clkevt_base = (void __iomem *)TIMER1_VA_BASE;
+static void __iomem * clkevt_base;
 
 /*
  * IRQ handler for the timer
@@ -421,11 +406,13 @@ static struct irqaction integrator_timer_irq = {
 	.dev_id		= &integrator_clockevent,
 };
 
-static void integrator_clockevent_init(unsigned long inrate)
+static void integrator_clockevent_init(unsigned long inrate,
+				void __iomem *base, int irq)
 {
 	unsigned long rate = inrate;
 	unsigned int ctrl = 0;
 
+	clkevt_base = base;
 	/* Calculate and program a divisor */
 	if (rate > 0x100000 * HZ) {
 		rate /= 256;
@@ -437,7 +424,7 @@ static void integrator_clockevent_init(unsigned long inrate)
 	timer_reload = rate / HZ;
 	writel(ctrl, clkevt_base + TIMER_CTRL);
 
-	setup_irq(IRQ_TIMERINT1, &integrator_timer_irq);
+	setup_irq(irq, &integrator_timer_irq);
 	clockevents_config_and_register(&integrator_clockevent,
 					rate,
 					1,
@@ -448,9 +435,91 @@ void __init ap_init_early(void)
 {
 }
 
+#ifdef CONFIG_OF
+
+static void __init ap_init_timer_of(void)
+{
+	struct device_node *node;
+	const char *path;
+	void __iomem *base;
+	int err;
+	int irq;
+	struct clk *clk;
+	unsigned long rate;
+
+	clk = clk_get_sys("ap_timer", NULL);
+	BUG_ON(IS_ERR(clk));
+	clk_prepare_enable(clk);
+	rate = clk_get_rate(clk);
+
+	err = of_property_read_string(of_aliases,
+				"arm,timer-primary", &path);
+	if (WARN_ON(err))
+		return;
+	node = of_find_node_by_path(path);
+	base = of_iomap(node, 0);
+	if (WARN_ON(!base))
+		return;
+	writel(0, base + TIMER_CTRL);
+	integrator_clocksource_init(rate, base);
+
+	err = of_property_read_string(of_aliases,
+				"arm,timer-secondary", &path);
+	if (WARN_ON(err))
+		return;
+	node = of_find_node_by_path(path);
+	base = of_iomap(node, 0);
+	if (WARN_ON(!base))
+		return;
+	irq = irq_of_parse_and_map(node, 0);
+	writel(0, base + TIMER_CTRL);
+	integrator_clockevent_init(rate, base, irq);
+}
+
+static struct sys_timer ap_of_timer = {
+	.init		= ap_init_timer_of,
+};
+
+static const struct of_device_id fpga_irq_of_match[] __initconst = {
+	{ .compatible = "arm,versatile-fpga-irq", .data = fpga_irq_of_init, },
+	{ /* Sentinel */ }
+};
+
+static void __init ap_init_irq_of(void)
+{
+	/* disable core module IRQs */
+	writel(0xffffffffU, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
+	of_irq_init(fpga_irq_of_match);
+	integrator_clk_init(false);
+}
+
+static const char * ap_dt_board_compat[] = {
+	"arm,integrator-ap",
+	NULL,
+};
+
+DT_MACHINE_START(INTEGRATOR_AP_DT, "ARM Integrator/AP (Device Tree)")
+	.reserve	= integrator_reserve,
+	.map_io		= ap_map_io,
+	.nr_irqs	= NR_IRQS_INTEGRATOR_AP,
+	.init_early	= ap_init_early,
+	.init_irq	= ap_init_irq_of,
+	.handle_irq	= fpga_handle_irq,
+	.timer		= &ap_of_timer,
+	.init_machine	= ap_init,
+	.restart	= integrator_restart,
+	.dt_compat      = ap_dt_board_compat,
+MACHINE_END
+
+#endif
+
+#ifdef CONFIG_ATAGS
+
 /*
- * Set up timer(s).
+ * This is where non-devicetree initialization code is collected and stashed
+ * for eventual deletion.
  */
+
 static void __init ap_init_timer(void)
 {
 	struct clk *clk;
@@ -465,14 +534,32 @@ static void __init ap_init_timer(void)
 	writel(0, TIMER1_VA_BASE + TIMER_CTRL);
 	writel(0, TIMER2_VA_BASE + TIMER_CTRL);
 
-	integrator_clocksource_init(rate);
-	integrator_clockevent_init(rate);
+	integrator_clocksource_init(rate, (void __iomem *)TIMER2_VA_BASE);
+	integrator_clockevent_init(rate, (void __iomem *)TIMER1_VA_BASE,
+				IRQ_TIMERINT1);
 }
 
 static struct sys_timer ap_timer = {
 	.init		= ap_init_timer,
 };
 
+#define INTEGRATOR_SC_VALID_INT	0x003fffff
+
+static void __init ap_init_irq(void)
+{
+	/* Disable all interrupts initially. */
+	/* Do the core module ones */
+	writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
+
+	/* do the header card stuff next */
+	writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
+	writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
+
+	fpga_irq_init(VA_IC_BASE, "SC", IRQ_PIC_START,
+		-1, INTEGRATOR_SC_VALID_INT, NULL);
+	integrator_clk_init(false);
+}
+
 MACHINE_START(INTEGRATOR, "ARM-Integrator")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 	.atag_offset	= 0x100,
@@ -486,3 +573,5 @@ MACHINE_START(INTEGRATOR, "ARM-Integrator")
 	.init_machine	= ap_init,
 	.restart	= integrator_restart,
 MACHINE_END
+
+#endif
-- 
cgit v1.2.1


From 4672cddff21f6edde857aa4b523bbc1bfc741cf8 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 6 Sep 2012 09:08:47 +0100
Subject: ARM: 7518/1: integrator: convert AMBA devices to device tree

This converts the AMBA (PrimeCell) devices on the Integrator/AP
and Integrator/CP over to probing from the Device Tree if the
kernel is compiled for Device Tree support.

We continue to #ifdef out all non-DT code and vice versa on
respective boot type to get a clean cut.

We need to add a bunch of auxdata (compare to the Versatile)
to handle bus names and callbacks alike.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-integrator/integrator_ap.c | 109 ++++++++++++++++++++++---------
 1 file changed, 78 insertions(+), 31 deletions(-)

(limited to 'arch/arm/mach-integrator/integrator_ap.c')

diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 57add86c4a69..8cd05607435a 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -36,6 +36,7 @@
 #include <linux/platform_data/clk-integrator.h>
 #include <linux/of_irq.h>
 #include <linux/of_address.h>
+#include <linux/of_platform.h>
 #include <video/vga.h>
 
 #include <mach/hardware.h>
@@ -271,36 +272,6 @@ static struct platform_device cfi_flash_device = {
 	.resource	= &cfi_flash_resource,
 };
 
-static void __init ap_init(void)
-{
-	unsigned long sc_dec;
-	int i;
-
-	platform_device_register(&cfi_flash_device);
-
-	sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
-	for (i = 0; i < 4; i++) {
-		struct lm_device *lmdev;
-
-		if ((sc_dec & (16 << i)) == 0)
-			continue;
-
-		lmdev = kzalloc(sizeof(struct lm_device), GFP_KERNEL);
-		if (!lmdev)
-			continue;
-
-		lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
-		lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
-		lmdev->resource.flags = IORESOURCE_MEM;
-		lmdev->irq = IRQ_AP_EXPINT0 + i;
-		lmdev->id = i;
-
-		lm_device_register(lmdev);
-	}
-
-	integrator_init(false);
-}
-
 /*
  * Where is the timer (VA)?
  */
@@ -493,6 +464,52 @@ static void __init ap_init_irq_of(void)
 	integrator_clk_init(false);
 }
 
+/* For the Device Tree, add in the UART callbacks as AUXDATA */
+static struct of_dev_auxdata ap_auxdata_lookup[] __initdata = {
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_RTC_BASE,
+		"rtc", NULL),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART0_BASE,
+		"uart0", &integrator_uart_data),
+	OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART1_BASE,
+		"uart1", &integrator_uart_data),
+	OF_DEV_AUXDATA("arm,primecell", KMI0_BASE,
+		"kmi0", NULL),
+	OF_DEV_AUXDATA("arm,primecell", KMI1_BASE,
+		"kmi1", NULL),
+	{ /* sentinel */ },
+};
+
+static void __init ap_init_of(void)
+{
+	unsigned long sc_dec;
+	int i;
+
+	of_platform_populate(NULL, of_default_bus_match_table,
+			ap_auxdata_lookup, NULL);
+
+	platform_device_register(&cfi_flash_device);
+
+	sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
+	for (i = 0; i < 4; i++) {
+		struct lm_device *lmdev;
+
+		if ((sc_dec & (16 << i)) == 0)
+			continue;
+
+		lmdev = kzalloc(sizeof(struct lm_device), GFP_KERNEL);
+		if (!lmdev)
+			continue;
+
+		lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
+		lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
+		lmdev->resource.flags = IORESOURCE_MEM;
+		lmdev->irq = IRQ_AP_EXPINT0 + i;
+		lmdev->id = i;
+
+		lm_device_register(lmdev);
+	}
+}
+
 static const char * ap_dt_board_compat[] = {
 	"arm,integrator-ap",
 	NULL,
@@ -506,7 +523,7 @@ DT_MACHINE_START(INTEGRATOR_AP_DT, "ARM Integrator/AP (Device Tree)")
 	.init_irq	= ap_init_irq_of,
 	.handle_irq	= fpga_handle_irq,
 	.timer		= &ap_of_timer,
-	.init_machine	= ap_init,
+	.init_machine	= ap_init_of,
 	.restart	= integrator_restart,
 	.dt_compat      = ap_dt_board_compat,
 MACHINE_END
@@ -560,6 +577,36 @@ static void __init ap_init_irq(void)
 	integrator_clk_init(false);
 }
 
+static void __init ap_init(void)
+{
+	unsigned long sc_dec;
+	int i;
+
+	platform_device_register(&cfi_flash_device);
+
+	sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
+	for (i = 0; i < 4; i++) {
+		struct lm_device *lmdev;
+
+		if ((sc_dec & (16 << i)) == 0)
+			continue;
+
+		lmdev = kzalloc(sizeof(struct lm_device), GFP_KERNEL);
+		if (!lmdev)
+			continue;
+
+		lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
+		lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
+		lmdev->resource.flags = IORESOURCE_MEM;
+		lmdev->irq = IRQ_AP_EXPINT0 + i;
+		lmdev->id = i;
+
+		lm_device_register(lmdev);
+	}
+
+	integrator_init(false);
+}
+
 MACHINE_START(INTEGRATOR, "ARM-Integrator")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 	.atag_offset	= 0x100,
-- 
cgit v1.2.1


From 73efd53012af7775a4504da46ebf4145528d50e7 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 6 Sep 2012 09:09:11 +0100
Subject: ARM: 7519/1: integrator: convert platform devices to Device Tree

This moves the physmap flash and SMSC91x ethernet devices
over to the device tree, moving the static board code down
into the #ifndef CONFIG_OF section.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-integrator/integrator_ap.c | 36 ++++++++++++++++----------------
 1 file changed, 18 insertions(+), 18 deletions(-)

(limited to 'arch/arm/mach-integrator/integrator_ap.c')

diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 8cd05607435a..ff1255ae7121 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -256,22 +256,6 @@ static struct physmap_flash_data ap_flash_data = {
 	.set_vpp	= ap_flash_set_vpp,
 };
 
-static struct resource cfi_flash_resource = {
-	.start		= INTEGRATOR_FLASH_BASE,
-	.end		= INTEGRATOR_FLASH_BASE + INTEGRATOR_FLASH_SIZE - 1,
-	.flags		= IORESOURCE_MEM,
-};
-
-static struct platform_device cfi_flash_device = {
-	.name		= "physmap-flash",
-	.id		= 0,
-	.dev		= {
-		.platform_data	= &ap_flash_data,
-	},
-	.num_resources	= 1,
-	.resource	= &cfi_flash_resource,
-};
-
 /*
  * Where is the timer (VA)?
  */
@@ -476,6 +460,8 @@ static struct of_dev_auxdata ap_auxdata_lookup[] __initdata = {
 		"kmi0", NULL),
 	OF_DEV_AUXDATA("arm,primecell", KMI1_BASE,
 		"kmi1", NULL),
+	OF_DEV_AUXDATA("cfi-flash", INTEGRATOR_FLASH_BASE,
+		"physmap-flash", &ap_flash_data),
 	{ /* sentinel */ },
 };
 
@@ -487,8 +473,6 @@ static void __init ap_init_of(void)
 	of_platform_populate(NULL, of_default_bus_match_table,
 			ap_auxdata_lookup, NULL);
 
-	platform_device_register(&cfi_flash_device);
-
 	sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
 	for (i = 0; i < 4; i++) {
 		struct lm_device *lmdev;
@@ -537,6 +521,22 @@ MACHINE_END
  * for eventual deletion.
  */
 
+static struct resource cfi_flash_resource = {
+	.start		= INTEGRATOR_FLASH_BASE,
+	.end		= INTEGRATOR_FLASH_BASE + INTEGRATOR_FLASH_SIZE - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device cfi_flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &ap_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &cfi_flash_resource,
+};
+
 static void __init ap_init_timer(void)
 {
 	struct clk *clk;
-- 
cgit v1.2.1