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From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
	<tglx@linutronix.de>, <jason@lakedaemon.net>,
	<marc.zyngier@arm.com>, <linus.walleij@linaro.org>,
	<stefan@agner.ch>, <mark.rutland@arm.com>
Cc: <pdeschrijver@nvidia.com>, <pgaikwad@nvidia.com>,
	<sboyd@kernel.org>, <linux-clk@vger.kernel.org>,
	<linux-gpio@vger.kernel.org>, <jckuo@nvidia.com>,
	<josephl@nvidia.com>, <talho@nvidia.com>,
	<skomatineni@nvidia.com>, <linux-tegra@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <mperttunen@nvidia.com>,
	<spatra@nvidia.com>, <robh+dt@kernel.org>, <digetx@gmail.com>,
	<devicetree@vger.kernel.org>
Subject: [PATCH v7 15/20] soc/tegra: pmc: Add pmc wake support for tegra210
Date: Tue, 30 Jul 2019 17:20:19 -0700	[thread overview]
Message-ID: <1564532424-10449-16-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1564532424-10449-1-git-send-email-skomatineni@nvidia.com>

This patch implements PMC wakeup sequence for Tegra210 and defines
common used RTC alarm wake event.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 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..3aa71c28a10a 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 |= 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);
@@ -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 |= 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);
@@ -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)					     \
-- 
2.7.4


  parent reply	other threads:[~2019-07-31  0:21 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-31  0:20 [PATCH v7 00/20] SC7 entry and exit support for Tegra210 Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 01/20] pinctrl: tegra: Add suspend and resume support Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 02/20] pinctrl: tegra210: Add Tegra210 pinctrl pm ops Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 03/20] clk: tegra: divider: Save and restore divider rate Sowjanya Komatineni
2019-07-31 10:49   ` Dmitry Osipenko
2019-07-31  0:20 ` [PATCH v7 04/20] clk: tegra: pllout: Save and restore pllout context Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 05/20] clk: tegra: pll: Save and restore pll context Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 06/20] clk: tegra: Support for OSC context save and restore Sowjanya Komatineni
2019-07-31 11:11   ` Dmitry Osipenko
2019-07-31 21:04     ` Sowjanya Komatineni
2019-08-01 10:53       ` Dmitry Osipenko
2019-08-01 18:06         ` Sowjanya Komatineni
2019-08-01 18:42           ` Dmitry Osipenko
2019-07-31  0:20 ` [PATCH v7 07/20] clk: tegra: clk-periph: Add save and restore support Sowjanya Komatineni
2019-07-31  9:50   ` Dmitry Osipenko
2019-07-31 10:44     ` Dmitry Osipenko
2019-07-31 23:09       ` Sowjanya Komatineni
2019-08-01 17:58         ` Sowjanya Komatineni
2019-08-01 19:00           ` Dmitry Osipenko
2019-08-01 19:42             ` Sowjanya Komatineni
2019-08-01 20:17               ` Dmitry Osipenko
2019-08-01 20:31                 ` Sowjanya Komatineni
2019-08-01 20:54                   ` Dmitry Osipenko
2019-08-01 21:30                     ` Sowjanya Komatineni
2019-08-01 23:19                       ` Sowjanya Komatineni
2019-08-01 23:49                         ` Sowjanya Komatineni
2019-08-02 12:38                           ` Dmitry Osipenko
2019-08-02 18:33                             ` Sowjanya Komatineni
2019-08-02 20:13                               ` Dmitry Osipenko
2019-08-02 20:17                                 ` Dmitry Osipenko
2019-08-02 20:32                                   ` Sowjanya Komatineni
2019-08-02 21:15                                     ` Dmitry Osipenko
2019-08-02 21:18                                       ` Sowjanya Komatineni
2019-08-02 23:51                                       ` Sowjanya Komatineni
2019-08-03 10:33                                         ` Dmitry Osipenko
2019-08-03 17:01                                           ` Sowjanya Komatineni
2019-08-03 23:44                                             ` Sowjanya Komatineni
2019-08-04 12:24                                               ` Dmitry Osipenko
2019-08-04 12:31                                                 ` Dmitry Osipenko
2019-08-02 12:32   ` Dmitry Osipenko
2019-08-02 18:43     ` Sowjanya Komatineni
2019-08-02 20:20       ` Dmitry Osipenko
2019-08-02 20:37         ` Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 08/20] clk: tegra: clk-super: Fix to enable PLLP branches to CPU Sowjanya Komatineni
2019-07-31 10:14   ` Dmitry Osipenko
2019-07-31  0:20 ` [PATCH v7 09/20] clk: tegra: clk-super: Add save and restore support Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 10/20] clk: tegra: clk-dfll: Add suspend and resume support Sowjanya Komatineni
2019-07-31 10:12   ` Dmitry Osipenko
2019-07-31  0:20 ` [PATCH v7 11/20] cpufreq: tegra124: " Sowjanya Komatineni
2019-07-31 10:23   ` Dmitry Osipenko
2019-07-31 11:14     ` Dmitry Osipenko
2019-07-31 21:05       ` Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 12/20] clk: tegra210: Use fence_udelay during PLLU init Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 13/20] clk: tegra210: Add suspend and resume support Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 14/20] soc/tegra: pmc: Allow to support more tegras wake Sowjanya Komatineni
2019-07-31  0:20 ` Sowjanya Komatineni [this message]
2019-07-31  0:20 ` [PATCH v7 16/20] arm64: tegra: Enable wake from deep sleep on RTC alarm Sowjanya Komatineni
2019-07-31 11:04   ` Dmitry Osipenko
2019-07-31 21:08     ` Sowjanya Komatineni
2019-08-01 10:43       ` Dmitry Osipenko
2019-08-01 17:56         ` Sowjanya Komatineni
2019-08-01 18:39           ` Dmitry Osipenko
2019-07-31  0:20 ` [PATCH v7 17/20] soc/tegra: pmc: Configure core power request polarity Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 18/20] soc/tegra: pmc: Configure deep sleep control settings Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 19/20] arm64: dts: tegra210-p2180: Jetson TX1 SC7 timings Sowjanya Komatineni
2019-07-31  0:20 ` [PATCH v7 20/20] arm64: dts: tegra210-p3450: Jetson Nano " Sowjanya Komatineni
2019-07-31 21:10 [PATCH v7 00/20] SC7 entry and exit support for Tegra210 Sowjanya Komatineni
2019-07-31 21:10 ` [PATCH v7 15/20] soc/tegra: pmc: Add pmc wake support for tegra210 Sowjanya Komatineni

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