From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sowjanya Komatineni Subject: [PATCH V1 01/12] irqchip: tegra: do not disable COP IRQ during suspend Date: Tue, 21 May 2019 16:31:12 -0700 Message-ID: <1558481483-22254-2-git-send-email-skomatineni@nvidia.com> References: <1558481483-22254-1-git-send-email-skomatineni@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1558481483-22254-1-git-send-email-skomatineni@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org To: thierry.reding@gmail.com, jonathanh@nvidia.com Cc: jckuo@nvidia.com, talho@nvidia.com, josephl@nvidia.com, skomatineni@nvidia.com, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-tegra@vger.kernel.org BPMP-lite still need IRQ function to finish SC7 suspend sequence for Tegra210. This patch has fix for leaving the COP IRQ enabled for Tegra210 during interrupt controller suspend operation. Signed-off-by: Sowjanya Komatineni --- drivers/irqchip/irq-tegra.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-tegra.c b/drivers/irqchip/irq-tegra.c index 0abc0cd1c32e..1882373fa1fd 100644 --- a/drivers/irqchip/irq-tegra.c +++ b/drivers/irqchip/irq-tegra.c @@ -53,18 +53,24 @@ static unsigned int num_ictlrs; struct tegra_ictlr_soc { unsigned int num_ictlrs; + bool has_bpmpl; }; +static const struct tegra_ictlr_soc *soc; + static const struct tegra_ictlr_soc tegra20_ictlr_soc = { .num_ictlrs = 4, + .has_bpmpl = false, }; static const struct tegra_ictlr_soc tegra30_ictlr_soc = { .num_ictlrs = 5, + .has_bpmpl = false, }; static const struct tegra_ictlr_soc tegra210_ictlr_soc = { .num_ictlrs = 6, + .has_bpmpl = true, }; static const struct of_device_id ictlr_matches[] = { @@ -157,7 +163,8 @@ static int tegra_ictlr_suspend(void) lic->cop_iep[i] = readl_relaxed(ictlr + ICTLR_COP_IEP_CLASS); /* Disable COP interrupts */ - writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR); + if (!soc->has_bpmpl) + writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR); /* Disable CPU interrupts */ writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR); @@ -286,7 +293,6 @@ static int __init tegra_ictlr_init(struct device_node *node, { struct irq_domain *parent_domain, *domain; const struct of_device_id *match; - const struct tegra_ictlr_soc *soc; unsigned int i; int err; -- 2.7.4