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Subject[PATCH v2 3/7] pinctrl: use ngpios propety from DT
Date
Since identical hardware is used in several instances and every
instance will have different in-use pins. Hence extracting this
number from DT via "ngpios" property.

Signed-off-by: Pramod Kumar <pramodku@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
---
drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c | 45 +++++++------------------------
1 file changed, 9 insertions(+), 36 deletions(-)

diff --git a/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c b/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c
index 12a48f4..498a58a 100644
--- a/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c
+++ b/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c
@@ -642,35 +642,11 @@ static void cygnus_gpio_unregister_pinconf(struct cygnus_gpio *chip)
pinctrl_unregister(chip->pctl);
}

-struct cygnus_gpio_data {
- unsigned num_gpios;
-};
-
-static const struct cygnus_gpio_data cygnus_cmm_gpio_data = {
- .num_gpios = 24,
-};
-
-static const struct cygnus_gpio_data cygnus_asiu_gpio_data = {
- .num_gpios = 146,
-};
-
-static const struct cygnus_gpio_data cygnus_crmu_gpio_data = {
- .num_gpios = 6,
-};
-
static const struct of_device_id cygnus_gpio_of_match[] = {
- {
- .compatible = "brcm,cygnus-ccm-gpio",
- .data = &cygnus_cmm_gpio_data,
- },
- {
- .compatible = "brcm,cygnus-asiu-gpio",
- .data = &cygnus_asiu_gpio_data,
- },
- {
- .compatible = "brcm,cygnus-crmu-gpio",
- .data = &cygnus_crmu_gpio_data,
- }
+ { .compatible = "brcm,cygnus-ccm-gpio" },
+ { .compatible = "brcm,cygnus-asiu-gpio" },
+ { .compatible = "brcm,cygnus-crmu-gpio" },
+ { }
};

static int cygnus_gpio_probe(struct platform_device *pdev)
@@ -681,14 +657,6 @@ static int cygnus_gpio_probe(struct platform_device *pdev)
struct gpio_chip *gc;
u32 ngpios;
int irq, ret;
- const struct of_device_id *match;
- const struct cygnus_gpio_data *gpio_data;
-
- match = of_match_device(cygnus_gpio_of_match, dev);
- if (!match)
- return -ENODEV;
- gpio_data = match->data;
- ngpios = gpio_data->num_gpios;

chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
@@ -713,6 +681,11 @@ static int cygnus_gpio_probe(struct platform_device *pdev)
}
}

+ if (of_property_read_u32(dev->of_node, "ngpios", &ngpios)) {
+ dev_err(&pdev->dev, "missing ngpios DT property\n");
+ return -ENODEV;
+ }
+
spin_lock_init(&chip->lock);

gc = &chip->gc;
--
1.9.1


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