From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: [PATCH 2/4] ARM: keystone: Update the dma offset for non-dt platform devices Date: Thu, 24 Apr 2014 11:42:20 -0400 Message-ID: <1398354142-2767-3-git-send-email-santosh.shilimkar@ti.com> References: <1398354142-2767-1-git-send-email-santosh.shilimkar@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1398354142-2767-1-git-send-email-santosh.shilimkar-l0cyMroinI0@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, grygorii.strashko-l0cyMroinI0@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, Santosh Shilimkar List-Id: devicetree@vger.kernel.org Signed-off-by: Grygorii Strashko Signed-off-by: Santosh Shilimkar --- arch/arm/mach-keystone/keystone.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/arm/mach-keystone/keystone.c b/arch/arm/mach-keystone/keystone.c index 155eb06..59b8383 100644 --- a/arch/arm/mach-keystone/keystone.c +++ b/arch/arm/mach-keystone/keystone.c @@ -31,6 +31,27 @@ #define PLL_RESET BIT(16) static void __iomem *keystone_rstctrl; +static struct notifier_block platform_nb; +static unsigned long keystone_dma_pfn_offset __read_mostly; + +static int keystone_platform_notifier(struct notifier_block *nb, + unsigned long event, void *data) +{ + struct device *dev = data; + + if (event != BUS_NOTIFY_ADD_DEVICE) + return NOTIFY_DONE; + + if (!dev) + return NOTIFY_BAD; + + if (!dev->of_node) { + dev->dma_pfn_offset = keystone_dma_pfn_offset; + dev_err(dev, "set dma_pfn_offset%08lx\n", + dev->dma_pfn_offset); + } + return NOTIFY_OK; +} static void __init keystone_init(void) { @@ -45,6 +66,8 @@ static void __init keystone_init(void) pr_warn("ti,keystone-reset iomap error\n"); keystone_pm_runtime_init(); + if (platform_nb.notifier_call) + bus_register_notifier(&platform_bus_type, &platform_nb); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } @@ -88,6 +111,9 @@ static void __init keystone_init_meminfo(void) /* Populate the arch idmap hook */ arch_virt_to_idmap = keystone_virt_to_idmap; + platform_nb.notifier_call = keystone_platform_notifier; + keystone_dma_pfn_offset = PFN_DOWN(KEYSTONE_HIGH_PHYS_START - + KEYSTONE_LOW_PHYS_START); pr_info("Switching to high address space at 0x%llx\n", (u64)offset); } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html