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[209.132.180.67]) by mx.google.com with ESMTP id u71si12847883pgd.455.2019.06.18.00.47.33; Tue, 18 Jun 2019 00:47:48 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@nvidia.com header.s=n1 header.b=mr95d6Nt; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nvidia.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729187AbfFRHrM (ORCPT + 99 others); Tue, 18 Jun 2019 03:47:12 -0400 Received: from hqemgate16.nvidia.com ([216.228.121.65]:14174 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726238AbfFRHrL (ORCPT ); Tue, 18 Jun 2019 03:47:11 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 18 Jun 2019 00:47:09 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 18 Jun 2019 00:47:09 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 18 Jun 2019 00:47:09 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 18 Jun 2019 07:47:09 +0000 Received: from hqnvemgw02.nvidia.com (172.16.227.111) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 18 Jun 2019 07:47:09 +0000 Received: from skomatineni-linux.nvidia.com (Not Verified[10.2.168.217]) by hqnvemgw02.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Tue, 18 Jun 2019 00:47:09 -0700 From: Sowjanya Komatineni To: , , , , , , , CC: , , , , , , , , , , , , , , , Subject: [PATCH V3 13/17] soc/tegra: pmc: add pmc wake support for tegra210 Date: Tue, 18 Jun 2019 00:46:27 -0700 Message-ID: <1560843991-24123-14-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1560843991-24123-1-git-send-email-skomatineni@nvidia.com> References: <1560843991-24123-1-git-send-email-skomatineni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1560844029; bh=Eft9jVTETH16qx1GufxFmbqLBke4vXfKbSmLNuCeeYA=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=mr95d6NtTmSciq2E3sFgyuSs+AhtQluFR6xuZePLQKADK7dnFg7ubCDF+Z2ECmrDj tiqISvbLEDLwsENrnRN6bHwv6R0mmB+5gkrDEKGfBjxrVA5xlvb2VvluZF4oZbFme6 u8Mhyqfi9WkwGim+JaMdUHoualURPduJdvpevE4GdDUlj8V74Aa9M16tLg1q2+Vo4r C88q5Rrv6HvtnYRbS/w9nJY76eKcH/Uk8NN1bVnRezarg45uLwSoG4PJ4k9HyEKO6m zLb362kFexWJ270V/DFFj5YuFRA1qU8GUKDFHS/mNeqx0ZVnwet54Q0OVO1djAT2M3 wwJcPfytCj46A== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch implements PMC wakeup sequence for Tegra210 and defines common used RTC alarm wake event. Signed-off-by: Sowjanya Komatineni --- drivers/soc/tegra/pmc.c | 111 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index e87f29a35fcf..603fc3bd73f5 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -57,6 +57,12 @@ #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */ #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */ #define PMC_CNTRL_MAIN_RST BIT(4) +#define PMC_CNTRL_LATCH_WAKEUPS BIT(5) + +#define PMC_WAKE_MASK 0x0c +#define PMC_WAKE_LEVEL 0x10 +#define PMC_WAKE_STATUS 0x14 +#define PMC_SW_WAKE_STATUS 0x18 #define DPD_SAMPLE 0x020 #define DPD_SAMPLE_ENABLE BIT(0) @@ -87,6 +93,11 @@ #define PMC_SCRATCH41 0x140 +#define PMC_WAKE2_MASK 0x160 +#define PMC_WAKE2_LEVEL 0x164 +#define PMC_WAKE2_STATUS 0x168 +#define PMC_SW_WAKE2_STATUS 0x16c + #define PMC_SENSOR_CTRL 0x1b0 #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2) #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1) @@ -1921,6 +1932,55 @@ static const struct irq_domain_ops tegra_pmc_irq_domain_ops = { .alloc = tegra_pmc_irq_alloc, }; +static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on) +{ + struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); + unsigned int offset, bit; + u32 value; + + if (data->hwirq == ULONG_MAX) + return 0; + + offset = data->hwirq / 32; + bit = data->hwirq % 32; + + /* + * latch wakeups to SW_WAKE_STATUS register to capture events + * that would not make it into wakeup event register during LP0 exit. + */ + value = tegra_pmc_readl(pmc, PMC_CNTRL); + value |= PMC_CNTRL_LATCH_WAKEUPS; + tegra_pmc_writel(pmc, value, PMC_CNTRL); + udelay(120); + + value &= ~PMC_CNTRL_LATCH_WAKEUPS; + tegra_pmc_writel(pmc, value, PMC_CNTRL); + udelay(120); + + tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS); + tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS); + + tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS); + tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS); + + /* enable PMC wake */ + if (data->hwirq >= 32) + offset = PMC_WAKE2_MASK; + else + offset = PMC_WAKE_MASK; + + value = tegra_pmc_readl(pmc, offset); + + if (on) + value |= 1 << bit; + else + value &= ~(1 << bit); + + tegra_pmc_writel(pmc, value, offset); + + return 0; +} + static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on) { struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); @@ -1953,6 +2013,49 @@ static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on) return 0; } +static int tegra210_pmc_irq_set_type(struct irq_data *data, unsigned int type) +{ + struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); + unsigned int offset, bit; + u32 value; + + if (data->hwirq == ULONG_MAX) + return 0; + + offset = data->hwirq / 32; + bit = data->hwirq % 32; + + if (data->hwirq >= 32) + offset = PMC_WAKE2_LEVEL; + else + offset = PMC_WAKE_LEVEL; + + value = tegra_pmc_readl(pmc, offset); + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + case IRQ_TYPE_LEVEL_HIGH: + value |= 1 << bit; + break; + + case IRQ_TYPE_EDGE_FALLING: + case IRQ_TYPE_LEVEL_LOW: + value &= ~(1 << bit); + break; + + case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING: + value ^= 1 << bit; + break; + + default: + return -EINVAL; + } + + tegra_pmc_writel(pmc, value, offset); + + return 0; +} + static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type) { struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); @@ -2541,6 +2644,10 @@ static const struct pinctrl_pin_desc tegra210_pin_descs[] = { TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) }; +static const struct tegra_wake_event tegra210_wake_events[] = { + TEGRA_WAKE_IRQ("rtc", 16, 2), +}; + static const struct tegra_pmc_soc tegra210_pmc_soc = { .num_powergates = ARRAY_SIZE(tegra210_powergates), .powergates = tegra210_powergates, @@ -2558,10 +2665,14 @@ static const struct tegra_pmc_soc tegra210_pmc_soc = { .regs = &tegra20_pmc_regs, .init = tegra20_pmc_init, .setup_irq_polarity = tegra20_pmc_setup_irq_polarity, + .irq_set_wake = tegra210_pmc_irq_set_wake, + .irq_set_type = tegra210_pmc_irq_set_type, .reset_sources = tegra210_reset_sources, .num_reset_sources = ARRAY_SIZE(tegra210_reset_sources), .reset_levels = NULL, .num_reset_levels = 0, + .num_wake_events = ARRAY_SIZE(tegra210_wake_events), + .wake_events = tegra210_wake_events, }; #define TEGRA186_IO_PAD_TABLE(_pad) \ -- 2.7.4