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pinctrl: cygnus: Remove GPIO to Pinctrl pin mapping from driver

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Remove gpio to pinctrl pin mapping code from driver and
address this through standard property "gpio-ranges".

Signed-off-by: Pramod Kumar <pramodku@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Pramod Kumar 2015-10-19 11:13:09 +05:30 committed by Linus Walleij
parent 03e09bc185
commit ea92211c08
1 changed files with 3 additions and 128 deletions
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131
drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c
View file

@ -29,7 +29,6 @@
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
@ -596,127 +595,6 @@ static const struct pinconf_ops cygnus_pconf_ops = {
.pin_config_set = cygnus_pin_config_set,
};
/*
* Map a GPIO in the local gpio_chip pin space to a pin in the Cygnus IOMUX
* pinctrl pin space
*/
struct cygnus_gpio_pin_range {
unsigned offset;
unsigned pin_base;
unsigned num_pins;
};
#define CYGNUS_PINRANGE(o, p, n) { .offset = o, .pin_base = p, .num_pins = n }
/*
* Pin mapping table for mapping local GPIO pins to Cygnus IOMUX pinctrl pins
*/
static const struct cygnus_gpio_pin_range cygnus_gpio_pintable[] = {
CYGNUS_PINRANGE(0, 42, 1),
CYGNUS_PINRANGE(1, 44, 3),
CYGNUS_PINRANGE(4, 48, 1),
CYGNUS_PINRANGE(5, 50, 3),
CYGNUS_PINRANGE(8, 126, 1),
CYGNUS_PINRANGE(9, 155, 1),
CYGNUS_PINRANGE(10, 152, 1),
CYGNUS_PINRANGE(11, 154, 1),
CYGNUS_PINRANGE(12, 153, 1),
CYGNUS_PINRANGE(13, 127, 3),
CYGNUS_PINRANGE(16, 140, 1),
CYGNUS_PINRANGE(17, 145, 7),
CYGNUS_PINRANGE(24, 130, 10),
CYGNUS_PINRANGE(34, 141, 4),
CYGNUS_PINRANGE(38, 54, 1),
CYGNUS_PINRANGE(39, 56, 3),
CYGNUS_PINRANGE(42, 60, 3),
CYGNUS_PINRANGE(45, 64, 3),
CYGNUS_PINRANGE(48, 68, 2),
CYGNUS_PINRANGE(50, 84, 6),
CYGNUS_PINRANGE(56, 94, 6),
CYGNUS_PINRANGE(62, 72, 1),
CYGNUS_PINRANGE(63, 70, 1),
CYGNUS_PINRANGE(64, 80, 1),
CYGNUS_PINRANGE(65, 74, 3),
CYGNUS_PINRANGE(68, 78, 1),
CYGNUS_PINRANGE(69, 82, 1),
CYGNUS_PINRANGE(70, 156, 17),
CYGNUS_PINRANGE(87, 104, 12),
CYGNUS_PINRANGE(99, 102, 2),
CYGNUS_PINRANGE(101, 90, 4),
CYGNUS_PINRANGE(105, 116, 6),
CYGNUS_PINRANGE(111, 100, 2),
CYGNUS_PINRANGE(113, 122, 4),
CYGNUS_PINRANGE(123, 11, 1),
CYGNUS_PINRANGE(124, 38, 4),
CYGNUS_PINRANGE(128, 43, 1),
CYGNUS_PINRANGE(129, 47, 1),
CYGNUS_PINRANGE(130, 49, 1),
CYGNUS_PINRANGE(131, 53, 1),
CYGNUS_PINRANGE(132, 55, 1),
CYGNUS_PINRANGE(133, 59, 1),
CYGNUS_PINRANGE(134, 63, 1),
CYGNUS_PINRANGE(135, 67, 1),
CYGNUS_PINRANGE(136, 71, 1),
CYGNUS_PINRANGE(137, 73, 1),
CYGNUS_PINRANGE(138, 77, 1),
CYGNUS_PINRANGE(139, 79, 1),
CYGNUS_PINRANGE(140, 81, 1),
CYGNUS_PINRANGE(141, 83, 1),
CYGNUS_PINRANGE(142, 10, 1)
};
/*
* The Cygnus IOMUX controller mainly supports group based mux configuration,
* but certain pins can be muxed to GPIO individually. Only the ASIU GPIO
* controller can support this, so it's an optional configuration
*
* Return -ENODEV means no support and that's fine
*/
static int cygnus_gpio_pinmux_add_range(struct cygnus_gpio *chip)
{
struct device_node *node = chip->dev->of_node;
struct device_node *pinmux_node;
struct platform_device *pinmux_pdev;
struct gpio_chip *gc = &chip->gc;
int i, ret = 0;
/* parse DT to find the phandle to the pinmux controller */
pinmux_node = of_parse_phandle(node, "pinmux", 0);
if (!pinmux_node)
return -ENODEV;
pinmux_pdev = of_find_device_by_node(pinmux_node);
/* no longer need the pinmux node */
of_node_put(pinmux_node);
if (!pinmux_pdev) {
dev_err(chip->dev, "failed to get pinmux device\n");
return -EINVAL;
}
/* now need to create the mapping between local GPIO and PINMUX pins */
for (i = 0; i < ARRAY_SIZE(cygnus_gpio_pintable); i++) {
ret = gpiochip_add_pin_range(gc, dev_name(&pinmux_pdev->dev),
cygnus_gpio_pintable[i].offset,
cygnus_gpio_pintable[i].pin_base,
cygnus_gpio_pintable[i].num_pins);
if (ret) {
dev_err(chip->dev, "unable to add GPIO pin range\n");
goto err_put_device;
}
}
chip->pinmux_is_supported = true;
/* no need for pinmux_pdev device reference anymore */
put_device(&pinmux_pdev->dev);
return 0;
err_put_device:
put_device(&pinmux_pdev->dev);
gpiochip_remove_pin_ranges(gc);
return ret;
}
/*
* Cygnus GPIO controller supports some PINCONF related configurations such as
* pull up, pull down, and drive strength, when the pin is configured to GPIO
@ -851,18 +729,15 @@ static int cygnus_gpio_probe(struct platform_device *pdev)
gc->set = cygnus_gpio_set;
gc->get = cygnus_gpio_get;
chip->pinmux_is_supported = of_property_read_bool(dev->of_node,
"gpio-ranges");
ret = gpiochip_add(gc);
if (ret < 0) {
dev_err(dev, "unable to add GPIO chip\n");
return ret;
}
ret = cygnus_gpio_pinmux_add_range(chip);
if (ret && ret != -ENODEV) {
dev_err(dev, "unable to add GPIO pin range\n");
goto err_rm_gpiochip;
}
ret = cygnus_gpio_register_pinconf(chip);
if (ret) {
dev_err(dev, "unable to register pinconf\n");