Main bcm2708/bcm2709 linux port

Signed-off-by: popcornmix <popcornmix@gmail.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
bcm2709: Drop platform smp and timer init code

irq-bcm2836 handles this through these functions:
bcm2835_init_local_timer_frequency()
bcm2836_arm_irqchip_smp_init()

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
bcm270x: Use watchdog for reboot/poweroff

The watchdog driver already has support for reboot/poweroff.
Make use of this and remove the code from the platform files.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
board_bcm2835: Remove coherent dma pool increase - API has gone

diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index 4b2000d..780704f 100644 (file)
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -163,6 +163,7 @@ config ARCH_BCM2835
        select PINCTRL
        select PINCTRL_BCM2835
        select MFD_CORE
+       select MFD_SYSCON if ARCH_MULTI_V7
        help
          This enables support for the Broadcom BCM2711 and BCM283x SoCs.
          This SoC is used in the Raspberry Pi and Roku 2 devices.

diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index 203dff8..9290ae1 100644 (file)
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -72,10 +72,19 @@ ENDPROC(cpu_v6_reset)
  *
  *     IRQs are already disabled.
  */
+
+/* See jira SW-5991 for details of this workaround */
 ENTRY(cpu_v6_do_idle)
-       mov     r1, #0
-       mcr     p15, 0, r1, c7, c10, 4          @ DWB - WFI may enter a low-power mode
-       mcr     p15, 0, r1, c7, c0, 4           @ wait for interrupt
+       .align 5
+       mov     r1, #2
+1:     subs    r1, #1
+       nop
+       mcreq   p15, 0, r1, c7, c10, 4          @ DWB - WFI may enter a low-power mode
+       mcreq   p15, 0, r1, c7, c0, 4           @ wait for interrupt
+       nop
+       nop
+       nop
+       bne 1b
        ret     lr
 
 ENTRY(cpu_v6_dcache_clean_area)

diff --git a/drivers/irqchip/irq-bcm2835.c b/drivers/irqchip/irq-bcm2835.c
index 6fa9234..9abf6f1 100644 (file)
--- a/drivers/irqchip/irq-bcm2835.c
+++ b/drivers/irqchip/irq-bcm2835.c
@@ -43,7 +43,9 @@
 #include <linux/irqdomain.h>
 
 #include <asm/exception.h>
+#ifndef CONFIG_ARM64
 #include <asm/mach/irq.h>
+#endif
 
 /* Put the bank and irq (32 bits) into the hwirq */
 #define MAKE_HWIRQ(b, n)       (((b) << 5) | (n))
@@ -72,6 +74,7 @@
 #define NR_BANKS               3
 #define IRQS_PER_BANK          32
 #define NUMBER_IRQS            MAKE_HWIRQ(NR_BANKS, 0)
+#undef FIQ_START
 #define FIQ_START              (NR_IRQS_BANK0 + MAKE_HWIRQ(NR_BANKS - 1, 0))
 
 static const int reg_pending[] __initconst = { 0x00, 0x04, 0x08 };
@@ -253,10 +256,12 @@ static int __init armctrl_of_init(struct device_node *node,
                                        MAKE_HWIRQ(b, i) + NUMBER_IRQS);
                        BUG_ON(irq <= 0);
                        irq_set_chip(irq, &armctrl_chip);
-                       set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+                       irq_set_probe(irq);
                }
        }
+#ifndef CONFIG_ARM64
        init_FIQ(FIQ_START);
+#endif
 
        return 0;
 }

diff --git a/drivers/mailbox/bcm2835-mailbox.c b/drivers/mailbox/bcm2835-mailbox.c
index fbfd020..7e0d62f 100644 (file)
--- a/drivers/mailbox/bcm2835-mailbox.c
+++ b/drivers/mailbox/bcm2835-mailbox.c
@@ -45,12 +45,15 @@
 #define MAIL1_WRT      (ARM_0_MAIL1 + 0x00)
 #define MAIL1_STA      (ARM_0_MAIL1 + 0x18)
 
+/* On ARCH_BCM270x these come through <linux/interrupt.h> (arm_control.h ) */
+#ifndef ARM_MS_FULL
 /* Status register: FIFO state. */
 #define ARM_MS_FULL            BIT(31)
 #define ARM_MS_EMPTY           BIT(30)
 
 /* Configuration register: Enable interrupts. */
 #define ARM_MC_IHAVEDATAIRQEN  BIT(0)
+#endif
 
 struct bcm2835_mbox {
        void __iomem *regs;
@@ -144,7 +147,7 @@ static int bcm2835_mbox_probe(struct platform_device *pdev)
                return -ENOMEM;
        spin_lock_init(&mbox->lock);
 
-       ret = devm_request_irq(dev, irq_of_parse_and_map(dev->of_node, 0),
+       ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
                               bcm2835_mbox_irq, 0, dev_name(dev), mbox);
        if (ret) {
                dev_err(dev, "Failed to register a mailbox IRQ handler: %d\n",
@@ -192,7 +195,18 @@ static struct platform_driver bcm2835_mbox_driver = {
        },
        .probe          = bcm2835_mbox_probe,
 };
-module_platform_driver(bcm2835_mbox_driver);
+
+static int __init bcm2835_mbox_init(void)
+{
+       return platform_driver_register(&bcm2835_mbox_driver);
+}
+arch_initcall(bcm2835_mbox_init);
+
+static void __init bcm2835_mbox_exit(void)
+{
+       platform_driver_unregister(&bcm2835_mbox_driver);
+}
+module_exit(bcm2835_mbox_exit);
 
 MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>");
 MODULE_DESCRIPTION("BCM2835 mailbox IPC driver");