Linus, On Thursday 13 February 2014 10:58 AM, Grygorii Strashko wrote: > The similar GPIO HW block is used by keystone SoCs as > in Davinci SoCs. > Hence, reuse Davinci GPIO driver for Keystone taking into > account that Keystone contains ARM GIC IRQ controller which > is implemented using IRQ Chip. > > Documentation: > http://www.ti.com/lit/ug/sprugv1/sprugv1.pdf > > Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx> > Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx> > --- > - rebased on top of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git > branch: devel > top commit: ef70bbe gpio: make gpiod_direction_output take a logical value > Can you please pick this one ? Its rebased as per your suggestion. > .../devicetree/bindings/gpio/gpio-davinci.txt | 4 +- > drivers/gpio/gpio-davinci.c | 48 ++++++++++++++++---- > 2 files changed, 42 insertions(+), 10 deletions(-) > > diff --git a/Documentation/devicetree/bindings/gpio/gpio-davinci.txt b/Documentation/devicetree/bindings/gpio/gpio-davinci.txt > index a2e839d..4ce9862 100644 > --- a/Documentation/devicetree/bindings/gpio/gpio-davinci.txt > +++ b/Documentation/devicetree/bindings/gpio/gpio-davinci.txt > @@ -1,7 +1,7 @@ > -Davinci GPIO controller bindings > +Davinci/Keystone GPIO controller bindings > > Required Properties: > -- compatible: should be "ti,dm6441-gpio" > +- compatible: should be "ti,dm6441-gpio", "ti,keystone-gpio" > > - reg: Physical base address of the controller and the size of memory mapped > registers. > diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c > index 7629b4f..d0f135d 100644 > --- a/drivers/gpio/gpio-davinci.c > +++ b/drivers/gpio/gpio-davinci.c > @@ -37,6 +37,8 @@ struct davinci_gpio_regs { > u32 intstat; > }; > > +typedef struct irq_chip *(*gpio_get_irq_chip_cb_t)(unsigned int irq); > + > #define BINTEN 0x8 /* GPIO Interrupt Per-Bank Enable Register */ > > #define chip2controller(chip) \ > @@ -413,6 +415,26 @@ static const struct irq_domain_ops davinci_gpio_irq_ops = { > .xlate = irq_domain_xlate_onetwocell, > }; > > +static struct irq_chip *davinci_gpio_get_irq_chip(unsigned int irq) > +{ > + static struct irq_chip_type gpio_unbanked; > + > + gpio_unbanked = *container_of(irq_get_chip(irq), > + struct irq_chip_type, chip); > + > + return &gpio_unbanked.chip; > +}; > + > +static struct irq_chip *keystone_gpio_get_irq_chip(unsigned int irq) > +{ > + static struct irq_chip gpio_unbanked; > + > + gpio_unbanked = *irq_get_chip(irq); > + return &gpio_unbanked; > +}; > + > +static const struct of_device_id davinci_gpio_ids[]; > + > /* > * NOTE: for suspend/resume, probably best to make a platform_device with > * suspend_late/resume_resume calls hooking into results of the set_wake() > @@ -433,6 +455,18 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev) > struct davinci_gpio_platform_data *pdata = dev->platform_data; > struct davinci_gpio_regs __iomem *g; > struct irq_domain *irq_domain = NULL; > + const struct of_device_id *match; > + struct irq_chip *irq_chip; > + gpio_get_irq_chip_cb_t gpio_get_irq_chip; > + > + /* > + * Use davinci_gpio_get_irq_chip by default to handle non DT cases > + */ > + gpio_get_irq_chip = davinci_gpio_get_irq_chip; > + match = of_match_device(of_match_ptr(davinci_gpio_ids), > + dev); > + if (match) > + gpio_get_irq_chip = (gpio_get_irq_chip_cb_t)match->data; > > ngpio = pdata->ngpio; > res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); > @@ -489,8 +523,6 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev) > * IRQ mux conflicts; gpio_irq_type_unbanked() is only for GPIOs. > */ > if (pdata->gpio_unbanked) { > - static struct irq_chip_type gpio_unbanked; > - > /* pass "bank 0" GPIO IRQs to AINTC */ > chips[0].chip.to_irq = gpio_to_irq_unbanked; > chips[0].gpio_irq = bank_irq; > @@ -499,10 +531,9 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev) > > /* AINTC handles mask/unmask; GPIO handles triggering */ > irq = bank_irq; > - gpio_unbanked = *container_of(irq_get_chip(irq), > - struct irq_chip_type, chip); > - gpio_unbanked.chip.name = "GPIO-AINTC"; > - gpio_unbanked.chip.irq_set_type = gpio_irq_type_unbanked; > + irq_chip = gpio_get_irq_chip(irq); > + irq_chip->name = "GPIO-AINTC"; > + irq_chip->irq_set_type = gpio_irq_type_unbanked; > > /* default trigger: both edges */ > g = gpio2regs(0); > @@ -511,7 +542,7 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev) > > /* set the direct IRQs up to use that irqchip */ > for (gpio = 0; gpio < pdata->gpio_unbanked; gpio++, irq++) { > - irq_set_chip(irq, &gpio_unbanked.chip); > + irq_set_chip(irq, irq_chip); > irq_set_handler_data(irq, &chips[gpio / 32]); > irq_set_status_flags(irq, IRQ_TYPE_EDGE_BOTH); > } > @@ -554,7 +585,8 @@ done: > > #if IS_ENABLED(CONFIG_OF) > static const struct of_device_id davinci_gpio_ids[] = { > - { .compatible = "ti,dm6441-gpio", }, > + { .compatible = "ti,keystone-gpio", keystone_gpio_get_irq_chip}, > + { .compatible = "ti,dm6441-gpio", davinci_gpio_get_irq_chip}, > { /* sentinel */ }, > }; > MODULE_DEVICE_TABLE(of, davinci_gpio_ids); > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
