Re: [PATCH V2 1/2] pinctrl: qcom: spmi-gpio: correct parent irqspec translation
From: Stephen Boyd <sboyd@kernel.org>
Date: 2021-09-03 18:09:28
Also in:
linux-arm-msm, linux-gpio, lkml
Quoting satya priya (2021-09-02 02:15:05)
quoted hunk ↗ jump to hunk
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c index 98bf0e2..dbae168 100644 --- a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c +++ b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c@@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved. + * Copyright (c) 2012-2014, 2016-2021 The Linux Foundation. All rights reserved. */ #include <linux/gpio/driver.h>@@ -14,6 +14,7 @@ #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/slab.h> +#include <linux/spmi.h> #include <linux/types.h> #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>@@ -171,6 +172,8 @@ struct pmic_gpio_state { struct pinctrl_dev *ctrl; struct gpio_chip chip; struct irq_chip irq; + u8 usid; + u8 pid_base; }; static const struct pinconf_generic_params pmic_gpio_bindings[] = {@@ -949,12 +952,36 @@ static int pmic_gpio_child_to_parent_hwirq(struct gpio_chip *chip, unsigned int *parent_hwirq, unsigned int *parent_type) { - *parent_hwirq = child_hwirq + 0xc0; + struct pmic_gpio_state *state = gpiochip_get_data(chip); + + *parent_hwirq = child_hwirq + state->pid_base; *parent_type = child_type; return 0; } +static void *pmic_gpio_populate_parent_fwspec(struct gpio_chip *chip, + unsigned int parent_hwirq, + unsigned int parent_type) +{ + struct pmic_gpio_state *state = gpiochip_get_data(chip); + struct irq_fwspec *fwspec; + + fwspec = kzalloc(sizeof(*fwspec), GFP_KERNEL);
The implementation of gpiochip_populate_parent_fwspec_fourcell() uses kmalloc() here. Should we also do that? Presumably the fwspec will be set with the important parts so this will save a memset call.
+ if (!fwspec) + return NULL; + + fwspec->fwnode = chip->irq.parent_domain->fwnode; + + fwspec->param_count = 4; + fwspec->param[0] = state->usid; + fwspec->param[1] = parent_hwirq; + fwspec->param[2] = 0;
If the kzalloc stays, this can be dropped.
+ fwspec->param[3] = parent_type;
+
+ return fwspec;
+}
+
static int pmic_gpio_probe(struct platform_device *pdev)
{
struct irq_domain *parent_domain;