From: Marc Zyngier <maz@kernel.org> To: linux-kernel@vger.kernel.org Cc: Linus Walleij <linus.walleij@linaro.org>, Bartosz Golaszewski <brgl@bgdev.pl>, Thierry Reding <thierry.reding@gmail.com>, Joey Gouly <joey.gouly@arm.com>, Jonathan Hunter <jonathanh@nvidia.com>, Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>, Alyssa Rosenzweig <alyssa@rosenzweig.io>, Bjorn Andersson <bjorn.andersson@linaro.org>, Andy Gross <agross@kernel.org>, Jeffrey Hugo <jeffrey.l.hugo@gmail.com>, Thomas Gleixner <tglx@linutronix.de>, Basavaraj Natikar <Basavaraj.Natikar@amd.com>, Shyam Sundar S K <Shyam-sundar.S-k@amd.com>, Andy Shevchenko <andy.shevchenko@gmail.com>, linux-gpio@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, kernel-team@android.com Subject: [PATCH v3 06/10] pinctrl: apple-gpio: Make the irqchip immutable Date: Tue, 19 Apr 2022 15:18:42 +0100 [thread overview] Message-ID: <20220419141846.598305-7-maz@kernel.org> (raw) In-Reply-To: <20220419141846.598305-1-maz@kernel.org> Prevent gpiolib from messing with the irqchip by advertising the irq_chip structure as immutable, making it const, and adding the various calls that gpiolib relies upon. Signed-off-by: Marc Zyngier <maz@kernel.org> --- drivers/pinctrl/pinctrl-apple-gpio.c | 29 +++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/drivers/pinctrl/pinctrl-apple-gpio.c b/drivers/pinctrl/pinctrl-apple-gpio.c index 72f4dd2466e1..5e610849dfc3 100644 --- a/drivers/pinctrl/pinctrl-apple-gpio.c +++ b/drivers/pinctrl/pinctrl-apple-gpio.c @@ -36,7 +36,6 @@ struct apple_gpio_pinctrl { struct pinctrl_desc pinctrl_desc; struct gpio_chip gpio_chip; - struct irq_chip irq_chip; u8 irqgrps[]; }; @@ -275,17 +274,21 @@ static unsigned int apple_gpio_irq_type(unsigned int type) static void apple_gpio_irq_mask(struct irq_data *data) { - struct apple_gpio_pinctrl *pctl = gpiochip_get_data(irq_data_get_irq_chip_data(data)); + struct gpio_chip *gc = irq_data_get_irq_chip_data(data); + struct apple_gpio_pinctrl *pctl = gpiochip_get_data(gc); apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_MODE, FIELD_PREP(REG_GPIOx_MODE, REG_GPIOx_IN_IRQ_OFF)); + gpiochip_disable_irq(gc, data->hwirq); } static void apple_gpio_irq_unmask(struct irq_data *data) { - struct apple_gpio_pinctrl *pctl = gpiochip_get_data(irq_data_get_irq_chip_data(data)); + struct gpio_chip *gc = irq_data_get_irq_chip_data(data); + struct apple_gpio_pinctrl *pctl = gpiochip_get_data(gc); unsigned int irqtype = apple_gpio_irq_type(irqd_get_trigger_type(data)); + gpiochip_enable_irq(gc, data->hwirq); apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_MODE, FIELD_PREP(REG_GPIOx_MODE, irqtype)); } @@ -343,13 +346,15 @@ static void apple_gpio_irq_handler(struct irq_desc *desc) chained_irq_exit(chip, desc); } -static struct irq_chip apple_gpio_irqchip = { - .name = "Apple-GPIO", - .irq_startup = apple_gpio_irq_startup, - .irq_ack = apple_gpio_irq_ack, - .irq_mask = apple_gpio_irq_mask, - .irq_unmask = apple_gpio_irq_unmask, - .irq_set_type = apple_gpio_irq_set_type, +static const struct irq_chip apple_gpio_irqchip = { + .name = "Apple-GPIO", + .irq_startup = apple_gpio_irq_startup, + .irq_ack = apple_gpio_irq_ack, + .irq_mask = apple_gpio_irq_mask, + .irq_unmask = apple_gpio_irq_unmask, + .irq_set_type = apple_gpio_irq_set_type, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, }; /* Probe & register */ @@ -360,8 +365,6 @@ static int apple_gpio_register(struct apple_gpio_pinctrl *pctl) void **irq_data = NULL; int ret; - pctl->irq_chip = apple_gpio_irqchip; - pctl->gpio_chip.label = dev_name(pctl->dev); pctl->gpio_chip.request = gpiochip_generic_request; pctl->gpio_chip.free = gpiochip_generic_free; @@ -377,7 +380,7 @@ static int apple_gpio_register(struct apple_gpio_pinctrl *pctl) if (girq->num_parents) { int i; - girq->chip = &pctl->irq_chip; + gpio_irq_chip_set_chip(girq, &apple_gpio_irqchip); girq->parent_handler = apple_gpio_irq_handler; girq->parents = kmalloc_array(girq->num_parents, -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org> To: linux-kernel@vger.kernel.org Cc: Linus Walleij <linus.walleij@linaro.org>, Bartosz Golaszewski <brgl@bgdev.pl>, Thierry Reding <thierry.reding@gmail.com>, Joey Gouly <joey.gouly@arm.com>, Jonathan Hunter <jonathanh@nvidia.com>, Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>, Alyssa Rosenzweig <alyssa@rosenzweig.io>, Bjorn Andersson <bjorn.andersson@linaro.org>, Andy Gross <agross@kernel.org>, Jeffrey Hugo <jeffrey.l.hugo@gmail.com>, Thomas Gleixner <tglx@linutronix.de>, Basavaraj Natikar <Basavaraj.Natikar@amd.com>, Shyam Sundar S K <Shyam-sundar.S-k@amd.com>, Andy Shevchenko <andy.shevchenko@gmail.com>, linux-gpio@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, kernel-team@android.com Subject: [PATCH v3 06/10] pinctrl: apple-gpio: Make the irqchip immutable Date: Tue, 19 Apr 2022 15:18:42 +0100 [thread overview] Message-ID: <20220419141846.598305-7-maz@kernel.org> (raw) In-Reply-To: <20220419141846.598305-1-maz@kernel.org> Prevent gpiolib from messing with the irqchip by advertising the irq_chip structure as immutable, making it const, and adding the various calls that gpiolib relies upon. Signed-off-by: Marc Zyngier <maz@kernel.org> --- drivers/pinctrl/pinctrl-apple-gpio.c | 29 +++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/drivers/pinctrl/pinctrl-apple-gpio.c b/drivers/pinctrl/pinctrl-apple-gpio.c index 72f4dd2466e1..5e610849dfc3 100644 --- a/drivers/pinctrl/pinctrl-apple-gpio.c +++ b/drivers/pinctrl/pinctrl-apple-gpio.c @@ -36,7 +36,6 @@ struct apple_gpio_pinctrl { struct pinctrl_desc pinctrl_desc; struct gpio_chip gpio_chip; - struct irq_chip irq_chip; u8 irqgrps[]; }; @@ -275,17 +274,21 @@ static unsigned int apple_gpio_irq_type(unsigned int type) static void apple_gpio_irq_mask(struct irq_data *data) { - struct apple_gpio_pinctrl *pctl = gpiochip_get_data(irq_data_get_irq_chip_data(data)); + struct gpio_chip *gc = irq_data_get_irq_chip_data(data); + struct apple_gpio_pinctrl *pctl = gpiochip_get_data(gc); apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_MODE, FIELD_PREP(REG_GPIOx_MODE, REG_GPIOx_IN_IRQ_OFF)); + gpiochip_disable_irq(gc, data->hwirq); } static void apple_gpio_irq_unmask(struct irq_data *data) { - struct apple_gpio_pinctrl *pctl = gpiochip_get_data(irq_data_get_irq_chip_data(data)); + struct gpio_chip *gc = irq_data_get_irq_chip_data(data); + struct apple_gpio_pinctrl *pctl = gpiochip_get_data(gc); unsigned int irqtype = apple_gpio_irq_type(irqd_get_trigger_type(data)); + gpiochip_enable_irq(gc, data->hwirq); apple_gpio_set_reg(pctl, data->hwirq, REG_GPIOx_MODE, FIELD_PREP(REG_GPIOx_MODE, irqtype)); } @@ -343,13 +346,15 @@ static void apple_gpio_irq_handler(struct irq_desc *desc) chained_irq_exit(chip, desc); } -static struct irq_chip apple_gpio_irqchip = { - .name = "Apple-GPIO", - .irq_startup = apple_gpio_irq_startup, - .irq_ack = apple_gpio_irq_ack, - .irq_mask = apple_gpio_irq_mask, - .irq_unmask = apple_gpio_irq_unmask, - .irq_set_type = apple_gpio_irq_set_type, +static const struct irq_chip apple_gpio_irqchip = { + .name = "Apple-GPIO", + .irq_startup = apple_gpio_irq_startup, + .irq_ack = apple_gpio_irq_ack, + .irq_mask = apple_gpio_irq_mask, + .irq_unmask = apple_gpio_irq_unmask, + .irq_set_type = apple_gpio_irq_set_type, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, }; /* Probe & register */ @@ -360,8 +365,6 @@ static int apple_gpio_register(struct apple_gpio_pinctrl *pctl) void **irq_data = NULL; int ret; - pctl->irq_chip = apple_gpio_irqchip; - pctl->gpio_chip.label = dev_name(pctl->dev); pctl->gpio_chip.request = gpiochip_generic_request; pctl->gpio_chip.free = gpiochip_generic_free; @@ -377,7 +380,7 @@ static int apple_gpio_register(struct apple_gpio_pinctrl *pctl) if (girq->num_parents) { int i; - girq->chip = &pctl->irq_chip; + gpio_irq_chip_set_chip(girq, &apple_gpio_irqchip); girq->parent_handler = apple_gpio_irq_handler; girq->parents = kmalloc_array(girq->num_parents, -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-04-19 14:19 UTC|newest] Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-19 14:18 [PATCH v3 00/10] gpiolib: Handle immutable irq_chip structures Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 01/10] gpio: Don't fiddle with irqchips marked as immutable Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 02/10] gpio: Expose the gpiochip_irq_re[ql]res helpers Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 03/10] gpio: Add helpers to ease the transition towards immutable irq_chip Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 04/10] gpio: tegra186: Make the irqchip immutable Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 05/10] gpio: pl061: " Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier [this message] 2022-04-19 14:18 ` [PATCH v3 06/10] pinctrl: apple-gpio: " Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 07/10] pinctrl: msmgpio: " Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 08/10] pinctrl: amd: " Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:29 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 09/10] gpio: Update TODO to mention immutable irq_chip structures Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:28 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-19 14:18 ` [PATCH v3 10/10] Documentation: Update the recommended pattern for GPIO irqchips Marc Zyngier 2022-04-19 14:18 ` Marc Zyngier 2022-04-19 14:28 ` [irqchip: irq/irqchip-next] " irqchip-bot for Marc Zyngier 2022-04-22 21:24 ` [PATCH v3 00/10] gpiolib: Handle immutable irq_chip structures Linus Walleij 2022-04-22 21:24 ` Linus Walleij 2022-04-23 10:30 ` Marc Zyngier 2022-04-23 10:30 ` Marc Zyngier 2022-04-26 10:24 ` Andy Shevchenko 2022-04-26 10:24 ` Andy Shevchenko 2022-04-26 21:59 ` Linus Walleij 2022-04-26 21:59 ` Linus Walleij 2022-05-04 21:21 ` Linus Walleij 2022-05-04 21:21 ` Linus Walleij 2022-05-05 8:09 ` Marc Zyngier 2022-05-05 8:09 ` Marc Zyngier 2022-05-05 12:58 ` Bartosz Golaszewski 2022-05-05 12:58 ` Bartosz Golaszewski 2022-05-05 14:50 ` Linus Walleij 2022-05-05 14:50 ` Linus Walleij 2022-05-12 17:08 ` Andy Shevchenko 2022-05-12 17:08 ` Andy Shevchenko 2022-05-12 17:35 ` Andy Shevchenko 2022-05-12 17:35 ` Andy Shevchenko 2022-05-12 22:18 ` Marc Zyngier 2022-05-12 22:18 ` Marc Zyngier 2022-05-13 8:43 ` Andy Shevchenko 2022-05-13 8:43 ` Andy Shevchenko 2022-05-13 8:51 ` Marc Zyngier 2022-05-13 8:51 ` Marc Zyngier 2022-05-12 22:15 ` Marc Zyngier 2022-05-12 22:15 ` Marc Zyngier
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20220419141846.598305-7-maz@kernel.org \ --to=maz@kernel.org \ --cc=Basavaraj.Natikar@amd.com \ --cc=Shyam-sundar.S-k@amd.com \ --cc=agross@kernel.org \ --cc=alyssa@rosenzweig.io \ --cc=andy.shevchenko@gmail.com \ --cc=bjorn.andersson@linaro.org \ --cc=brgl@bgdev.pl \ --cc=jeffrey.l.hugo@gmail.com \ --cc=joey.gouly@arm.com \ --cc=jonathanh@nvidia.com \ --cc=kernel-team@android.com \ --cc=linus.walleij@linaro.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-arm-msm@vger.kernel.org \ --cc=linux-gpio@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-tegra@vger.kernel.org \ --cc=marcan@marcan.st \ --cc=sven@svenpeter.dev \ --cc=tglx@linutronix.de \ --cc=thierry.reding@gmail.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.