Merge tag 'integrator-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/cleanup

From Linus Walleij <linus.walleij@linaro.org>:

This series will do the following:
- Switch the Integrator/AP and /CP to use the SoC bus
  when booting from device tree.
- Group all devices on the SoC below this bus so as to
  set a good example of how to do this. The bus was
  invented by Lee Jones, let's show how it's to be used
  on a DT:ed SoC.
- Fetch the special system controller offsets from two
  special device tree nodes for each case and replace
  the static mappings with these at boot.
- Move some static remaps to the ATAG-only code path
  and delete some static maps that aren't used.
- Push dependencies on system controller remaps down
  to the Integrator/AP board file and the PCIv3 driver
  respectively and use only dynamic remappings.
- Fix up conditional BUG() usage in the PCIv3 driver
  to be simpler and more to the point.

* tag 'integrator-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
  ARM: integrator: use BUG_ON where possible
  ARM: integrator: push down SC dependencies
  ARM: integrator: delete static UART1 mapping
  ARM: integrator: delete SC mapping on the CP
  ARM: integrator: remove static CP syscon mapping
  ARM: integrator: remove static AP syscon mapping
  ARM: integrator: hook the CP into the SoC bus
  ARM: integrator: hook the AP into the SoC bus

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

10 files changed, 354 insertions, 117 deletions

diff --git a/Documentation/devicetree/bindings/arm/arm-boards b/Documentation/devicetree/bindings/arm/arm-boards
index fc81a7d6b0f1..db5858e32d3f 100644
--- a/Documentation/devicetree/bindings/arm/arm-boards
+++ b/Documentation/devicetree/bindings/arm/arm-boards
@@ -9,6 +9,10 @@ Required properties (in root node):
 
 FPGA type interrupt controllers, see the versatile-fpga-irq binding doc.
 
+In the root node the Integrator/CP must have a /cpcon node pointing
+to the CP control registers, and the Integrator/AP must have a
+/syscon node pointing to the Integrator/AP system controller.
+
 
 ARM Versatile Application and Platform Baseboards
 -------------------------------------------------
diff --git a/arch/arm/boot/dts/integratorap.dts b/arch/arm/boot/dts/integratorap.dts
index 61767757b50a..c9c3fa344647 100644
--- a/arch/arm/boot/dts/integratorap.dts
+++ b/arch/arm/boot/dts/integratorap.dts
@@ -18,6 +18,11 @@
                 bootargs = "root=/dev/ram0 console=ttyAM0,38400n8 earlyprintk";
         };
 
+        syscon {
+                /* AP system controller registers */
+                reg = <0x11000000 0x100>;
+        };
+
         timer0: timer@13000000 {
                 compatible = "arm,integrator-timer";
         };
diff --git a/arch/arm/boot/dts/integratorcp.dts b/arch/arm/boot/dts/integratorcp.dts
index 2dd5e4e48481..8b119399025a 100644
--- a/arch/arm/boot/dts/integratorcp.dts
+++ b/arch/arm/boot/dts/integratorcp.dts
@@ -18,6 +18,11 @@
                 bootargs = "root=/dev/ram0 console=ttyAMA0,38400n8 earlyprintk";
         };
 
+        cpcon {
+                /* CP controller registers */
+                reg = <0xcb000000 0x100>;
+        };
+
         timer0: timer@13000000 {
                 compatible = "arm,sp804", "arm,primecell";
         };
diff --git a/arch/arm/mach-integrator/Kconfig b/arch/arm/mach-integrator/Kconfig
index 350e26636a06..abeff25532ab 100644
--- a/arch/arm/mach-integrator/Kconfig
+++ b/arch/arm/mach-integrator/Kconfig
@@ -8,6 +8,7 @@ config ARCH_INTEGRATOR_AP
         select MIGHT_HAVE_PCI
         select SERIAL_AMBA_PL010
         select SERIAL_AMBA_PL010_CONSOLE
+        select SOC_BUS
         help
           Include support for the ARM(R) Integrator/AP and
           Integrator/PP2 platforms.
@@ -19,6 +20,7 @@ config ARCH_INTEGRATOR_CP
         select PLAT_VERSATILE_CLCD
         select SERIAL_AMBA_PL011
         select SERIAL_AMBA_PL011_CONSOLE
+        select SOC_BUS
         help
           Include support for the ARM(R) Integrator CP platform.
 
diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
index c3ff21b5ea24..79197d8b34aa 100644
--- a/arch/arm/mach-integrator/common.h
+++ b/arch/arm/mach-integrator/common.h
@@ -1,6 +1,12 @@
 #include <linux/amba/serial.h>
-extern struct amba_pl010_data integrator_uart_data;
+#ifdef CONFIG_ARCH_INTEGRATOR_AP
+extern struct amba_pl010_data ap_uart_data;
+#else
+/* Not used without Integrator/AP support anyway */
+struct amba_pl010_data ap_uart_data {};
+#endif
 void integrator_init_early(void);
 int integrator_init(bool is_cp);
 void integrator_reserve(void);
 void integrator_restart(char, const char *);
+void integrator_init_sysfs(struct device *parent, u32 id);
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
index ea22a17246d7..39c060f75e47 100644
--- a/arch/arm/mach-integrator/core.c
+++ b/arch/arm/mach-integrator/core.c
@@ -18,10 +18,10 @@
 #include <linux/memblock.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
-#include <linux/termios.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/serial.h>
 #include <linux/io.h>
+#include <linux/stat.h>
 
 #include <mach/hardware.h>
 #include <mach/platform.h>
@@ -46,10 +46,10 @@ static AMBA_APB_DEVICE(rtc, "rtc", 0,
         INTEGRATOR_RTC_BASE, INTEGRATOR_RTC_IRQ, NULL);
 
 static AMBA_APB_DEVICE(uart0, "uart0", 0,
-        INTEGRATOR_UART0_BASE, INTEGRATOR_UART0_IRQ, &integrator_uart_data);
+        INTEGRATOR_UART0_BASE, INTEGRATOR_UART0_IRQ, NULL);
 
 static AMBA_APB_DEVICE(uart1, "uart1", 0,
-        INTEGRATOR_UART1_BASE, INTEGRATOR_UART1_IRQ, &integrator_uart_data);
+        INTEGRATOR_UART1_BASE, INTEGRATOR_UART1_IRQ, NULL);
 
 static AMBA_APB_DEVICE(kmi0, "kmi0", 0, KMI0_BASE, KMI0_IRQ, NULL);
 static AMBA_APB_DEVICE(kmi1, "kmi1", 0, KMI1_BASE, KMI1_IRQ, NULL);
@@ -77,6 +77,8 @@ int __init integrator_init(bool is_cp)
                 uart1_device.periphid   = 0x00041010;
                 kmi0_device.periphid    = 0x00041050;
                 kmi1_device.periphid    = 0x00041050;
+                uart0_device.dev.platform_data = &ap_uart_data;
+                uart1_device.dev.platform_data = &ap_uart_data;
         }
 
         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
@@ -89,49 +91,6 @@ int __init integrator_init(bool is_cp)
 
 #endif
 
-/*
- * On the Integrator platform, the port RTS and DTR are provided by
- * bits in the following SC_CTRLS register bits:
- *        RTS  DTR
- *  UART0  7    6
- *  UART1  5    4
- */
-#define SC_CTRLC        __io_address(INTEGRATOR_SC_CTRLC)
-#define SC_CTRLS        __io_address(INTEGRATOR_SC_CTRLS)
-
-static void integrator_uart_set_mctrl(struct amba_device *dev, void __iomem *base, unsigned int mctrl)
-{
-        unsigned int ctrls = 0, ctrlc = 0, rts_mask, dtr_mask;
-        u32 phybase = dev->res.start;
-
-        if (phybase == INTEGRATOR_UART0_BASE) {
-                /* UART0 */
-                rts_mask = 1 << 4;
-                dtr_mask = 1 << 5;
-        } else {
-                /* UART1 */
-                rts_mask = 1 << 6;
-                dtr_mask = 1 << 7;
-        }
-
-        if (mctrl & TIOCM_RTS)
-                ctrlc |= rts_mask;
-        else
-                ctrls |= rts_mask;
-
-        if (mctrl & TIOCM_DTR)
-                ctrlc |= dtr_mask;
-        else
-                ctrls |= dtr_mask;
-
-        __raw_writel(ctrls, SC_CTRLS);
-        __raw_writel(ctrlc, SC_CTRLC);
-}
-
-struct amba_pl010_data integrator_uart_data = {
-        .set_mctrl = integrator_uart_set_mctrl,
-};
-