From b37c8c275b90b3730ad99b0e96ae5e36895b26e8 Mon Sep 17 00:00:00 2001 From: popcornmix Date: Sun, 12 May 2013 12:24:19 +0100 Subject: [PATCH] Main bcm2708/bcm2709 linux port MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: popcornmix Signed-off-by: Noralf Trønnes 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 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 board_bcm2835: Remove coherent dma pool increase - API has gone --- arch/arm/mach-bcm/Kconfig | 1 + arch/arm/mm/proc-v6.S | 15 ++++++++++++--- drivers/irqchip/irq-bcm2835.c | 7 ++++++- drivers/mailbox/bcm2835-mailbox.c | 18 ++++++++++++++++-- 4 files changed, 35 insertions(+), 6 deletions(-) --- a/arch/arm/mach-bcm/Kconfig +++ b/arch/arm/mach-bcm/Kconfig @@ -168,6 +168,7 @@ config ARCH_BCM2835 select FIQ select PINCTRL select PINCTRL_BCM2835 + select MFD_SYSCON if ARCH_MULTI_V7 help This enables support for the Broadcom BCM2835 and BCM2836 SoCs. This SoC is used in the Raspberry Pi and Roku 2 devices. --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -73,10 +73,19 @@ 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) --- a/drivers/irqchip/irq-bcm2835.c +++ b/drivers/irqchip/irq-bcm2835.c @@ -52,7 +52,9 @@ #include #include +#ifndef CONFIG_ARM64 #include +#endif /* Put the bank and irq (32 bits) into the hwirq */ #define MAKE_HWIRQ(b, n) (((b) << 5) | (n)) @@ -80,6 +82,7 @@ #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 }; @@ -247,10 +250,12 @@ static int __init armctrl_of_init(struct 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; } --- a/drivers/mailbox/bcm2835-mailbox.c +++ b/drivers/mailbox/bcm2835-mailbox.c @@ -51,12 +51,15 @@ #define MAIL1_WRT (ARM_0_MAIL1 + 0x00) #define MAIL1_STA (ARM_0_MAIL1 + 0x18) +/* On ARCH_BCM270x these come through (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; @@ -151,7 +154,7 @@ static int bcm2835_mbox_probe(struct pla 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", @@ -209,7 +212,18 @@ static struct platform_driver bcm2835_mb .probe = bcm2835_mbox_probe, .remove = bcm2835_mbox_remove, }; -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 "); MODULE_DESCRIPTION("BCM2835 mailbox IPC driver");