ARM: ux500: Move all Device Tree booting into cpu-db8500

To aid the kernel in its effort to move to DT only booting, we're
transplanting all Device Tree related code to cpu-db8500 which will
remain persistent throughout the transition. This change paths the
way for complete removal of board-mop500, which will be done once
the all DMA settings are moved into the respective DT source files.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 103 insertions, 4 deletions

diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
index bcdfe6b1d453..25e1e32dbc08 100644
--- a/arch/arm/mach-ux500/cpu-db8500.c
+++ b/arch/arm/mach-ux500/cpu-db8500.c
@@ -17,9 +17,14 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/mfd/abx500/ab8500.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/regulator/machine.h>
 
 #include <asm/pmu.h>
 #include <asm/mach/map.h>
+#include <asm/mach/arch.h>
+#include <asm/hardware/gic.h>
 #include <plat/gpio-nomadik.h>
 #include <mach/hardware.h>
 #include <mach/setup.h>
@@ -29,6 +34,7 @@
 
 #include "devices-db8500.h"
 #include "ste-dma40-db8500.h"
+#include "board-mop500.h"
 
 /* minimum static i/o mapping required to boot U8500 platforms */
 static struct map_desc u8500_uart_io_desc[] __initdata = {
@@ -227,12 +233,12 @@ struct device * __init u8500_init_devices(struct ab8500_platform_data *ab8500)
 	return parent;
 }
 
+#ifdef CONFIG_MACH_UX500_DT
+
 /* TODO: Once all pieces are DT:ed, remove completely. */
-struct device * __init u8500_of_init_devices(void)
+static struct device * __init u8500_of_init_devices(void)
 {
-	struct device *parent;
-
-	parent = db8500_soc_device_init();
+	struct device *parent = db8500_soc_device_init();
 
 	db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg);
 
@@ -251,3 +257,96 @@ struct device * __init u8500_of_init_devices(void)
 
 	return parent;
 }
+
+static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
+	/* Requires call-back bindings. */
+	OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata),
+	/* Requires DMA and call-back bindings. */
+	OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
+	OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),
+	OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),
+	/* Requires DMA bindings. */
+	OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0",  &ssp0_plat),
+	OF_DEV_AUXDATA("arm,pl18x", 0x80126000, "sdi0",  &mop500_sdi0_data),
+	OF_DEV_AUXDATA("arm,pl18x", 0x80118000, "sdi1",  &mop500_sdi1_data),
+	OF_DEV_AUXDATA("arm,pl18x", 0x80005000, "sdi2",  &mop500_sdi2_data),
+	OF_DEV_AUXDATA("arm,pl18x", 0x80114000, "sdi4",  &mop500_sdi4_data),
+	/* Requires clock name bindings. */
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e000, "gpio.0", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e080, "gpio.1", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e000, "gpio.2", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e080, "gpio.3", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e100, "gpio.4", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e180, "gpio.5", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e000, "gpio.6", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e080, "gpio.7", NULL),
+	OF_DEV_AUXDATA("st,nomadik-gpio", 0xa03fe000, "gpio.8", NULL),
+	OF_DEV_AUXDATA("st,nomadik-i2c", 0x80004000, "nmk-i2c.0", NULL),
+	OF_DEV_AUXDATA("st,nomadik-i2c", 0x80122000, "nmk-i2c.1", NULL),
+	OF_DEV_AUXDATA("st,nomadik-i2c", 0x80128000, "nmk-i2c.2", NULL),
+	OF_DEV_AUXDATA("st,nomadik-i2c", 0x80110000, "nmk-i2c.3", NULL),
+	OF_DEV_AUXDATA("st,nomadik-i2c", 0x8012a000, "nmk-i2c.4", NULL),
+	/* Requires device name bindings. */
+	OF_DEV_AUXDATA("stericsson,nmk_pinctrl", 0, "pinctrl-db8500", NULL),
+	/* Requires clock name and DMA bindings. */
+	OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000,
+		"ux500-msp-i2s.0", &msp0_platform_data),
+	OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000,
+		"ux500-msp-i2s.1", &msp1_platform_data),
+	OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000,
+		"ux500-msp-i2s.2", &msp2_platform_data),
+	OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000,
+		"ux500-msp-i2s.3", &msp3_platform_data),
+	{},
+};
+
+static const struct of_device_id u8500_local_bus_nodes[] = {
+	/* only create devices below soc node */
+	{ .compatible = "stericsson,db8500", },
+	{ .compatible = "stericsson,db8500-prcmu", },
+	{ .compatible = "simple-bus"},
+	{ },
+};
+
+static void __init u8500_init_machine(void)
+{
+	struct device *parent = NULL;
+
+	/* Pinmaps must be in place before devices register */
+	if (of_machine_is_compatible("st-ericsson,mop500"))
+		mop500_pinmaps_init();
+	else if (of_machine_is_compatible("calaosystems,snowball-a9500"))
+		snowball_pinmaps_init();
+	else if (of_machine_is_compatible("st-ericsson,hrefv60+"))
+		hrefv60_pinmaps_init();
+
+	/* TODO: Export SoC, USB, cpu-freq and DMA40 */
+	parent = u8500_of_init_devices();
+
+	/* automatically probe child nodes of db8500 device */
+	of_platform_populate(NULL, u8500_local_bus_nodes, u8500_auxdata_lookup, parent);
+
+	/* This board has full regulator constraints */
+	regulator_has_full_constraints();
+}
+
+static const char * u8500_dt_board_compat[] = {
+	"calaosystems,snowball-a9500",
+	"st-ericsson,hrefv60+",
+	"st-ericsson,u8500",
+	"st-ericsson,mop500",
+	NULL,
+};
+
+DT_MACHINE_START(U8500_DT, "ST-Ericsson U8500 platform (Device Tree Support)")
+	.map_io		= u8500_map_io,
+	.init_irq	= ux500_init_irq,
+	/* we re-use nomadik timer here */
+	.timer		= &ux500_timer,
+	.handle_irq	= gic_handle_irq,
+	.init_machine	= u8500_init_machine,
+	.init_late	= ux500_init_late,
+	.dt_compat      = u8500_dt_board_compat,
+MACHINE_END
+
+#endif