From patchwork Fri Aug 16 19:42:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sowjanya Komatineni X-Patchwork-Id: 11098183 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 042111399 for ; Fri, 16 Aug 2019 19:43:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E685D1FFDB for ; Fri, 16 Aug 2019 19:43:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DA871289EC; Fri, 16 Aug 2019 19:43:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 61ABA1FFDB for ; Fri, 16 Aug 2019 19:43:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727883AbfHPTnF (ORCPT ); Fri, 16 Aug 2019 15:43:05 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:15042 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727589AbfHPTnF (ORCPT ); Fri, 16 Aug 2019 15:43:05 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Fri, 16 Aug 2019 12:43:15 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Fri, 16 Aug 2019 12:43:03 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Fri, 16 Aug 2019 12:43:03 -0700 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 16 Aug 2019 19:43:03 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 16 Aug 2019 19:43:03 +0000 Received: from skomatineni-linux.nvidia.com (Not Verified[10.2.166.126]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Fri, 16 Aug 2019 12:43:01 -0700 From: Sowjanya Komatineni To: , , , , , , , CC: , , , , , , , , , , , , , , , , , , Subject: [PATCH v9 17/22] soc/tegra: pmc: Add pmc wake support for tegra210 Date: Fri, 16 Aug 2019 12:42:02 -0700 Message-ID: <1565984527-5272-18-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1565984527-5272-1-git-send-email-skomatineni@nvidia.com> References: <1565984527-5272-1-git-send-email-skomatineni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1565984595; bh=cc2xl6C8Y3Fd8vlilPrn23vQPpqLaHv5nH1dQYHxwWI=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=BfHzUPTm8dwLBUijTHFyAceWlq34NwB5vVSDAUNvEJRorBKk6c0SBFg0vT/BpmDvE wVZTXiKL0f56lkTDl4d5bx+GBbW8Ich91Mhrl9a0iYLN5hz3uLYPauM6ir5AZMFEbQ MWY+jTM9s5rkk9KNp/GL51m0nAjEuosKBctrfGGeHmidAnLMSUneZcX+fNs4dPF8rN zq7V20C0oVR3TBrNDBlpff4GNuM0DTzyJL/1V+1YM/2tVAxeoDl+3zleFr4iJZSftH KLNsWY9bozVcMTHBje0Rp7i2rNMZ+0xJWFUmjoz+3S3UdwdSB2MGRmMd3Cgn6YnhZ5 MarSx3tbEdbNQ== Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 | 98 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 91c84d0e66ae..76e7292ded25 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -58,6 +58,11 @@ #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */ #define PMC_CNTRL_MAIN_RST BIT(4) +#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) #define DPD_SAMPLE_DISABLE (0 << 0) @@ -87,6 +92,11 @@ #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) @@ -1922,6 +1932,43 @@ 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; + + /* clear wake status */ + 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 |= BIT(bit); + else + value &= ~BIT(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); @@ -1954,6 +2001,49 @@ 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 |= BIT(bit); + break; + + case IRQ_TYPE_EDGE_FALLING: + case IRQ_TYPE_LEVEL_LOW: + value &= ~BIT(bit); + break; + + case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING: + value ^= BIT(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); @@ -2540,6 +2630,10 @@ 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, @@ -2557,10 +2651,14 @@ 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) \