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authorAmelie Delaunay <amelie.delaunay@st.com>2019-10-09 11:16:06 +0200
committerLinus Walleij <linus.walleij@linaro.org>2019-10-16 15:56:18 +0200
commitf086d1fe06cf3c5be928a6c2f8d1c54003f91d46 (patch)
treef2d53c518561c3a11020b4d844b6d079bf05d1bf
parentpinctrl: qcom: Add a pinctrl driver for MSM8976 and 8956 (diff)
downloadlinux-f086d1fe06cf3c5be928a6c2f8d1c54003f91d46.tar.xz
linux-f086d1fe06cf3c5be928a6c2f8d1c54003f91d46.zip
pinctrl: stmfx: add irq_request/release_resources callbacks
When an STMFX IO is used as interrupt through the interrupt-controller binding, the STMFX driver should configure this IO as input. Default value of STMFX IO direction is input, but if the IO is used as output before the interrupt use, it will not work without these callbacks. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Link: https://lore.kernel.org/r/20191009091606.17283-1-amelie.delaunay@st.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/pinctrl/pinctrl-stmfx.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-stmfx.c b/drivers/pinctrl/pinctrl-stmfx.c
index 974973777395..e6f76d2f18ab 100644
--- a/drivers/pinctrl/pinctrl-stmfx.c
+++ b/drivers/pinctrl/pinctrl-stmfx.c
@@ -505,6 +505,25 @@ static void stmfx_pinctrl_irq_bus_sync_unlock(struct irq_data *data)
mutex_unlock(&pctl->lock);
}
+static int stmfx_gpio_irq_request_resources(struct irq_data *data)
+{
+ struct gpio_chip *gpio_chip = irq_data_get_irq_chip_data(data);
+ int ret;
+
+ ret = stmfx_gpio_direction_input(gpio_chip, data->hwirq);
+ if (ret)
+ return ret;
+
+ return gpiochip_reqres_irq(gpio_chip, data->hwirq);
+}
+
+static void stmfx_gpio_irq_release_resources(struct irq_data *data)
+{
+ struct gpio_chip *gpio_chip = irq_data_get_irq_chip_data(data);
+
+ return gpiochip_relres_irq(gpio_chip, data->hwirq);
+}
+
static void stmfx_pinctrl_irq_toggle_trigger(struct stmfx_pinctrl *pctl,
unsigned int offset)
{
@@ -678,6 +697,8 @@ static int stmfx_pinctrl_probe(struct platform_device *pdev)
pctl->irq_chip.irq_set_type = stmfx_pinctrl_irq_set_type;
pctl->irq_chip.irq_bus_lock = stmfx_pinctrl_irq_bus_lock;
pctl->irq_chip.irq_bus_sync_unlock = stmfx_pinctrl_irq_bus_sync_unlock;
+ pctl->irq_chip.irq_request_resources = stmfx_gpio_irq_request_resources;
+ pctl->irq_chip.irq_release_resources = stmfx_gpio_irq_release_resources;
ret = gpiochip_irqchip_add_nested(&pctl->gpio_chip, &pctl->irq_chip,
0, handle_bad_irq, IRQ_TYPE_NONE);