gpio: brcmstb: Use dynamic GPIO base numbers
Forcing a gpiochip to have a fixed base number now leads to a warning message. Remove the need to do so by using the offset value of the gpiochip. Signed-off-by: Phil Elwell <phil@raspberrypi.com> Signed-off-by: Doug Berger <opendmb@gmail.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20240423184605.2094376-1-opendmb@gmail.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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@ -50,7 +50,6 @@ struct brcmstb_gpio_priv {
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struct irq_domain *irq_domain;
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struct irq_chip irq_chip;
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int parent_irq;
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int gpio_base;
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int num_gpios;
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int parent_wake_irq;
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};
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@ -92,7 +91,7 @@ brcmstb_gpio_get_active_irqs(struct brcmstb_gpio_bank *bank)
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static int brcmstb_gpio_hwirq_to_offset(irq_hw_number_t hwirq,
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struct brcmstb_gpio_bank *bank)
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{
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return hwirq - (bank->gc.base - bank->parent_priv->gpio_base);
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return hwirq - bank->gc.offset;
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}
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static void brcmstb_gpio_set_imask(struct brcmstb_gpio_bank *bank,
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@ -118,7 +117,7 @@ static int brcmstb_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
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{
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struct brcmstb_gpio_priv *priv = brcmstb_gpio_gc_to_priv(gc);
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/* gc_offset is relative to this gpio_chip; want real offset */
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int hwirq = offset + (gc->base - priv->gpio_base);
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int hwirq = offset + gc->offset;
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if (hwirq >= priv->num_gpios)
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return -ENXIO;
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@ -263,7 +262,7 @@ static void brcmstb_gpio_irq_bank_handler(struct brcmstb_gpio_bank *bank)
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{
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struct brcmstb_gpio_priv *priv = bank->parent_priv;
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struct irq_domain *domain = priv->irq_domain;
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int hwbase = bank->gc.base - priv->gpio_base;
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int hwbase = bank->gc.offset;
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unsigned long status;
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while ((status = brcmstb_gpio_get_active_irqs(bank))) {
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@ -412,7 +411,7 @@ static int brcmstb_gpio_of_xlate(struct gpio_chip *gc,
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if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
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return -EINVAL;
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offset = gpiospec->args[0] - (gc->base - priv->gpio_base);
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offset = gpiospec->args[0] - bank->gc.offset;
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if (offset >= gc->ngpio || offset < 0)
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return -EINVAL;
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@ -596,8 +595,8 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
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const __be32 *p;
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u32 bank_width;
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int num_banks = 0;
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int num_gpios = 0;
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int err;
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static int gpio_base;
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unsigned long flags = 0;
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bool need_wakeup_event = false;
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@ -611,7 +610,6 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
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if (IS_ERR(reg_base))
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return PTR_ERR(reg_base);
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priv->gpio_base = gpio_base;
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priv->reg_base = reg_base;
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priv->pdev = pdev;
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@ -651,7 +649,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
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dev_dbg(dev, "Width 0 found: Empty bank @ %d\n",
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num_banks);
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num_banks++;
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gpio_base += MAX_GPIO_PER_BANK;
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num_gpios += MAX_GPIO_PER_BANK;
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continue;
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}
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@ -691,7 +689,6 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
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err = -ENOMEM;
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goto fail;
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}
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gc->base = gpio_base;
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gc->of_gpio_n_cells = 2;
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gc->of_xlate = brcmstb_gpio_of_xlate;
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/* not all ngpio lines are valid, will use bank width later */
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@ -713,7 +710,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
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bank->id);
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goto fail;
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}
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gpio_base += gc->ngpio;
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num_gpios += gc->ngpio;
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dev_dbg(dev, "bank=%d, base=%d, ngpio=%d, width=%d\n", bank->id,
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gc->base, gc->ngpio, bank->width);
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@ -724,7 +721,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
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num_banks++;
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}
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priv->num_gpios = gpio_base - priv->gpio_base;
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priv->num_gpios = num_gpios;
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if (priv->parent_irq > 0) {
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err = brcmstb_gpio_irq_setup(pdev, priv);
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if (err)
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