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Message-ID: <20210830095512.24796-1-pshete@nvidia.com>
Date: Mon, 30 Aug 2021 15:25:12 +0530
From: Prathamesh Shete <pshete@...dia.com>
To: <linux-kernel@...r.kernel.org>
Subject: [PATCH] gpio: tegra: add multiple interrupt support
From: pshete <pshete@...dia.com>
T19x GPIO controller's support multiple interrupts. The GPIO
controller is capable to route 8 interrupts per controller in
case of NON-AON GPIO's and 4 interrupts per controller in AON GPIO.
Signed-off-by: pshete <pshete@...dia.com>
---
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 49 +++++++++++++++++++++++-
drivers/gpio/gpio-tegra186.c | 25 ++++++++++--
2 files changed, 68 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index b7d532841390..c681a79c44ec 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -34,11 +34,53 @@
reg = <0x2200000 0x10000>,
<0x2210000 0x10000>;
interrupts = <GIC_SPI 288 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 289 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 290 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 291 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 292 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 293 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 294 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 295 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 296 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 297 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 298 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 299 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 301 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 302 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 303 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 304 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 308 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 309 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 310 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 311 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 312 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 313 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 314 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 315 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 316 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 317 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 318 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 319 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
- <GIC_SPI 328 IRQ_TYPE_LEVEL_HIGH>;
+ <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 322 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 323 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 325 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 326 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 327 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 328 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 329 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 330 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 331 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 333 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 334 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 335 IRQ_TYPE_LEVEL_HIGH>;
#interrupt-cells = <2>;
interrupt-controller;
#gpio-cells = <2>;
@@ -1273,7 +1315,10 @@
reg-names = "security", "gpio";
reg = <0xc2f0000 0x1000>,
<0xc2f1000 0x1000>;
- interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+ interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c
index d38980b9923a..36bd8de6d401 100644
--- a/drivers/gpio/gpio-tegra186.c
+++ b/drivers/gpio/gpio-tegra186.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2016-2017 NVIDIA Corporation
+ * Copyright (c) 2016-2021 NVIDIA Corporation
*
* Author: Thierry Reding <treding@...dia.com>
*/
@@ -68,6 +68,7 @@ struct tegra_gpio_soc {
unsigned int num_ports;
const char *name;
unsigned int instance;
+ bool multi_ints;
const struct tegra186_pin_range *pin_ranges;
unsigned int num_pin_ranges;
@@ -451,6 +452,7 @@ static void tegra186_gpio_irq(struct irq_desc *desc)
struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int parent = irq_desc_get_irq(desc);
unsigned int i, offset = 0;
+ int j, flag;
chained_irq_enter(chip, desc);
@@ -462,9 +464,20 @@ static void tegra186_gpio_irq(struct irq_desc *desc)
base = gpio->base + port->bank * 0x1000 + port->port * 0x200;
- /* skip ports that are not associated with this bank */
- if (parent != gpio->irq[port->bank])
- goto skip;
+ if (!gpio->soc->multi_ints) {
+ /* skip ports that are not associated with this bank */
+ if (parent != gpio->irq[port->bank])
+ goto skip;
+
+ } else {
+ flag = 0;
+ for (j = 0; j < 8; j++) {
+ if (parent != gpio->irq[(port->bank * 8) + j])
+ flag++;
+ }
+ if (!(flag & 0xF))
+ goto skip;
+ }
value = readl(base + TEGRA186_GPIO_INTERRUPT_STATUS(1));
@@ -772,6 +785,7 @@ static const struct tegra_gpio_soc tegra186_main_soc = {
.ports = tegra186_main_ports,
.name = "tegra186-gpio",
.instance = 0,
+ .multi_ints = false,
};
#define TEGRA186_AON_GPIO_PORT(_name, _bank, _port, _pins) \
@@ -798,6 +812,7 @@ static const struct tegra_gpio_soc tegra186_aon_soc = {
.ports = tegra186_aon_ports,
.name = "tegra186-gpio-aon",
.instance = 1,
+ .multi_ints = false,
};
#define TEGRA194_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
@@ -852,6 +867,7 @@ static const struct tegra_gpio_soc tegra194_main_soc = {
.num_pin_ranges = ARRAY_SIZE(tegra194_main_pin_ranges),
.pin_ranges = tegra194_main_pin_ranges,
.pinmux = "nvidia,tegra194-pinmux",
+ .multi_ints = true,
};
#define TEGRA194_AON_GPIO_PORT(_name, _bank, _port, _pins) \
@@ -875,6 +891,7 @@ static const struct tegra_gpio_soc tegra194_aon_soc = {
.ports = tegra194_aon_ports,
.name = "tegra194-gpio-aon",
.instance = 1,
+ .multi_ints = true,
};
static const struct of_device_id tegra186_gpio_of_match[] = {
--
2.17.1
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