7 files changed, 112 insertions, 54 deletions

diff --git a/arch/arm/mach-netx/fb.c b/arch/arm/mach-netx/fb.c
index 24c79650f9f3..8f1f992f002e 100644
--- a/arch/arm/mach-netx/fb.c
+++ b/arch/arm/mach-netx/fb.c
@@ -22,14 +22,11 @@
 #include <linux/dma-mapping.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/clcd.h>
+#include <linux/err.h>
 
 #include <mach/netx-regs.h>
 #include <mach/hardware.h>
 
-struct clk {};
-
-static struct clk fb_clk;
-
 static struct clcd_panel *netx_panel;
 
 void netx_clcd_enable(struct clcd_fb *fb)
@@ -85,7 +82,7 @@ int clk_enable(struct clk *clk)
 
 struct clk *clk_get(struct device *dev, const char *id)
 {
-        return &fb_clk;
+        return dev && strcmp(dev_name(dev), "fb") == 0 ? NULL : ERR_PTR(-ENOENT);
 }
 
 void clk_put(struct clk *clk)
diff --git a/arch/arm/mach-netx/include/mach/dma.h b/arch/arm/mach-netx/include/mach/dma.h
deleted file mode 100644
index 690b3ebc43ac..000000000000
--- a/arch/arm/mach-netx/include/mach/dma.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- *  arch/arm/mach-netx/include/mach/dma.h
- *
- * Copyright (C) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#define MAX_DMA_CHANNELS 0
-#define MAX_DMA_ADDRESS ~0
diff --git a/arch/arm/mach-netx/include/mach/io.h b/arch/arm/mach-netx/include/mach/io.h
index 468b92a82585..c3921cb3b6a6 100644
--- a/arch/arm/mach-netx/include/mach/io.h
+++ b/arch/arm/mach-netx/include/mach/io.h
@@ -22,7 +22,7 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-#define __io(a)         ((void __iomem *)(a))
+#define __io(a)         __typesafe_io(a)
 #define __mem_pci(a)            (a)
 
 #endif
diff --git a/arch/arm/mach-netx/include/mach/memory.h b/arch/arm/mach-netx/include/mach/memory.h
index 53745a1378de..9a363f297f90 100644
--- a/arch/arm/mach-netx/include/mach/memory.h
+++ b/arch/arm/mach-netx/include/mach/memory.h
@@ -22,15 +22,5 @@
 
 #define PHYS_OFFSET UL(0x80000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x)         __virt_to_phys(x)
-#define __bus_to_virt(x)         __phys_to_virt(x)
-
 #endif
 
diff --git a/arch/arm/mach-netx/include/mach/netx-regs.h b/arch/arm/mach-netx/include/mach/netx-regs.h
index 5104a00d40f4..08c60ff227be 100644
--- a/arch/arm/mach-netx/include/mach/netx-regs.h
+++ b/arch/arm/mach-netx/include/mach/netx-regs.h
@@ -328,6 +328,28 @@
 #define NETX_PFIFO_FILL_LEVEL(pfifo)  NETX_PFIFO_REG(0x180 + ((pfifo)<<2))
 #define NETX_PFIFO_XPEC_ISR(xpec)     NETX_PFIFO_REG(0x400 + ((xpec) << 2))
 
+
+/*******************************
+ * Memory Controller           *
+ *******************************/
+
+/* Registers */
+#define NETX_MEMCR_REG(ofs)               __io(NETX_VA_MEMCR + (ofs))
+#define NETX_MEMCR_SRAM_CTRL(cs)      NETX_MEMCR_REG(0x0 + 4 * (cs)) /* SRAM for CS 0..2 */
+#define NETX_MEMCR_SDRAM_CFG_CTRL     NETX_MEMCR_REG(0x40)
+#define NETX_MEMCR_SDRAM_TIMING_CTRL  NETX_MEMCR_REG(0x44)
+#define NETX_MEMCR_SDRAM_MODE         NETX_MEMCR_REG(0x48)
+#define NETX_MEMCR_SDRAM_EXT_MODE     NETX_MEMCR_REG(0x4c)
+#define NETX_MEMCR_PRIO_TIMESLOT_CTRL NETX_MEMCR_REG(0x80)
+#define NETX_MEMCR_PRIO_ACCESS_CTRL   NETX_MEMCR_REG(0x84)
+
+/* Bits */
+#define NETX_MEMCR_SRAM_CTRL_WIDTHEXTMEM(x)       (((x) & 0x3)  << 24)
+#define NETX_MEMCR_SRAM_CTRL_WSPOSTPAUSEEXTMEM(x) (((x) & 0x3)  << 16)
+#define NETX_MEMCR_SRAM_CTRL_WSPREPASEEXTMEM(x)   (((x) & 0x3)  << 8)
+#define NETX_MEMCR_SRAM_CTRL_WSEXTMEM(x)          (((x) & 0x1f) << 0)
+
+
 /*******************************
  * Dual Port Memory            *
  *******************************/
diff --git a/arch/arm/mach-netx/time.c b/arch/arm/mach-netx/time.c
index 7c540c1f01fa..d51d627ce7cf 100644
--- a/arch/arm/mach-netx/time.c
+++ b/arch/arm/mach-netx/time.c
@@ -21,43 +21,100 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/clocksource.h>
+#include <linux/clockchips.h>
 #include <linux/io.h>
 
 #include <mach/hardware.h>
 #include <asm/mach/time.h>
 #include <mach/netx-regs.h>
 
+#define TIMER_CLOCKEVENT 0
+#define TIMER_CLOCKSOURCE 1
+
+static void netx_set_mode(enum clock_event_mode mode,
+                struct clock_event_device *clk)
+{
+        u32 tmode;
+
+        /* disable timer */
+        writel(0, NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKEVENT));
+
+        switch (mode) {
+        case CLOCK_EVT_MODE_PERIODIC:
+                writel(LATCH, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKEVENT));
+                tmode = NETX_GPIO_COUNTER_CTRL_RST_EN |
+                        NETX_GPIO_COUNTER_CTRL_IRQ_EN |
+                        NETX_GPIO_COUNTER_CTRL_RUN;
+                break;
+
+        case CLOCK_EVT_MODE_ONESHOT:
+                writel(0, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKEVENT));
+                tmode = NETX_GPIO_COUNTER_CTRL_IRQ_EN |
+                        NETX_GPIO_COUNTER_CTRL_RUN;
+                break;
+
+        default:
+                WARN(1, "%s: unhandled mode %d\n", __func__, mode);
+                /* fall through */
+
+        case CLOCK_EVT_MODE_SHUTDOWN:
+        case CLOCK_EVT_MODE_UNUSED:
+        case CLOCK_EVT_MODE_RESUME:
+                tmode = 0;
+                break;
+        }
+
+        writel(tmode, NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKEVENT));
+}
+
+static int netx_set_next_event(unsigned long evt,
+                struct clock_event_device *clk)
+{
+        writel(0 - evt, NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKEVENT));
+        return 0;
+}
+
+static struct clock_event_device netx_clockevent = {
+        .name = "netx-timer" __stringify(TIMER_CLOCKEVENT),
+        .shift = 32,
+        .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
+        .set_next_event = netx_set_next_event,
+        .set_mode = netx_set_mode,
+};
+
 /*
  * IRQ handler for the timer
  */
 static irqreturn_t
 netx_timer_interrupt(int irq, void *dev_id)
 {
-        timer_tick();
+        struct clock_event_device *evt = &netx_clockevent;
 
         /* acknowledge interrupt */
         writel(COUNTER_BIT(0), NETX_GPIO_IRQ);
 
+        evt->event_handler(evt);
+
         return IRQ_HANDLED;
 }
 
 static struct irqaction netx_timer_irq = {
-        .name           = "NetX Timer Tick",
-        .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-        .handler        = netx_timer_interrupt,
+        .name           = "NetX Timer Tick",
+        .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+        .handler        = netx_timer_interrupt,
 };
 
 cycle_t netx_get_cycles(void)
 {
-        return readl(NETX_GPIO_COUNTER_CURRENT(1));
+        return readl(NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKSOURCE));
 }
 
 static struct clocksource clocksource_netx = {
-        .name           = "netx_timer",
+        .name           = "netx_timer",
         .rating         = 200,
         .read           = netx_get_cycles,
         .mask           = CLOCKSOURCE_MASK(32),
-        .shift          = 20,
+        .shift          = 20,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -77,24 +134,37 @@ static void __init netx_timer_init(void)
         /* acknowledge interrupt */
         writel(COUNTER_BIT(0), NETX_GPIO_IRQ);
 
-        /* Enable the interrupt in the specific timer register and start timer */
+        /* Enable the interrupt in the specific timer
+         * register and start timer
+         */
         writel(COUNTER_BIT(0), NETX_GPIO_IRQ_ENABLE);
         writel(NETX_GPIO_COUNTER_CTRL_IRQ_EN | NETX_GPIO_COUNTER_CTRL_RUN,
-                NETX_GPIO_COUNTER_CTRL(0));
+                        NETX_GPIO_COUNTER_CTRL(0));
 
         setup_irq(NETX_IRQ_TIMER0, &netx_timer_irq);
 
         /* Setup timer one for clocksource */
-        writel(0, NETX_GPIO_COUNTER_CTRL(1));
-        writel(0, NETX_GPIO_COUNTER_CURRENT(1));
-        writel(0xFFFFFFFF, NETX_GPIO_COUNTER_MAX(1));
+        writel(0, NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKSOURCE));
+        writel(0, NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKSOURCE));
+        writel(0xffffffff, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKSOURCE));
 
-        writel(NETX_GPIO_COUNTER_CTRL_RUN,
-                NETX_GPIO_COUNTER_CTRL(1));
+        writel(NETX_GPIO_COUNTER_CTRL_RUN,
+                        NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKSOURCE));
 
         clocksource_netx.mult =
                 clocksource_hz2mult(CLOCK_TICK_RATE, clocksource_netx.shift);
         clocksource_register(&clocksource_netx);
+
+        netx_clockevent.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC,
+                        netx_clockevent.shift);
+        netx_clockevent.max_delta_ns =
+                clockevent_delta2ns(0xfffffffe, &netx_clockevent);
+        /* with max_delta_ns >= delta2ns(0x800) the system currently runs fine.
+         * Adding some safety ... */
+        netx_clockevent.min_delta_ns =
+                clockevent_delta2ns(0xa00, &netx_clockevent);
+        netx_clockevent.cpumask = cpumask_of_cpu(0);
+        clockevents_register_device(&netx_clockevent);
 }
 
 struct sys_timer netx_timer = {
diff --git a/arch/arm/mach-netx/xc.c b/arch/arm/mach-netx/xc.c
index 32eabf5dfa4f..8fc6205dc3a5 100644
--- a/arch/arm/mach-netx/xc.c
+++ b/arch/arm/mach-netx/xc.c
@@ -92,10 +92,10 @@ static int xc_check_ptr(struct xc *x, unsigned long adr, unsigned int size)
         return -1;
 }
 
-static int xc_patch(struct xc *x, void *patch, int count)
+static int xc_patch(struct xc *x, const void *patch, int count)
 {
         unsigned int val, adr;
-        unsigned int *data = patch;
+        const unsigned int *data = patch;
 
         int i;
         for (i = 0; i < count; i++) {
@@ -117,7 +117,7 @@ int xc_request_firmware(struct xc *x)
         struct fw_header *head;
         unsigned int size;
         int i;
-        void *src;
+        const void *src;
         unsigned long dst;
 
         sprintf(name, "xc%d.bin", x->no);