diff options
Diffstat (limited to 'drivers/video/fbdev/via/via-gpio.c')
| -rw-r--r-- | drivers/video/fbdev/via/via-gpio.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/video/fbdev/via/via-gpio.c b/drivers/video/fbdev/via/via-gpio.c index 1e89c3434071..45c0a4a6f85c 100644 --- a/drivers/video/fbdev/via/via-gpio.c +++ b/drivers/video/fbdev/via/via-gpio.c @@ -1,16 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Support for viafb GPIO ports. * * Copyright 2009 Jonathan Corbet <corbet@lwn.net> - * Distributable under version 2 of the GNU General Public License. */ #include <linux/spinlock.h> #include <linux/gpio/driver.h> +#include <linux/gpio/machine.h> #include <linux/platform_device.h> #include <linux/via-core.h> -#include <linux/via-gpio.h> -#include <linux/export.h> +#include "via-gpio.h" /* * The ports we know about. Note that the port-25 gpios are not @@ -80,8 +80,7 @@ struct viafb_gpio_cfg { /* * GPIO access functions */ -static void via_gpio_set(struct gpio_chip *chip, unsigned int nr, - int value) +static int via_gpio_set(struct gpio_chip *chip, unsigned int nr, int value) { struct viafb_gpio_cfg *cfg = gpiochip_get_data(chip); u8 reg; @@ -98,13 +97,14 @@ static void via_gpio_set(struct gpio_chip *chip, unsigned int nr, reg &= ~(0x10 << gpio->vg_mask_shift); via_write_reg(VIASR, gpio->vg_port_index, reg); spin_unlock_irqrestore(&cfg->vdev->reg_lock, flags); + + return 0; } static int via_gpio_dir_out(struct gpio_chip *chip, unsigned int nr, int value) { - via_gpio_set(chip, nr, value); - return 0; + return via_gpio_set(chip, nr, value); } /* @@ -189,19 +189,14 @@ static struct viafb_pm_hooks viafb_gpio_pm_hooks = { }; #endif /* CONFIG_PM */ -/* - * Look up a specific gpio and return the number it was assigned. - */ -int viafb_gpio_lookup(const char *name) -{ - int i; - - for (i = 0; i < viafb_gpio_config.gpio_chip.ngpio; i++) - if (!strcmp(name, viafb_gpio_config.active_gpios[i]->vg_name)) - return viafb_gpio_config.gpio_chip.base + i; - return -1; -} -EXPORT_SYMBOL_GPL(viafb_gpio_lookup); +static struct gpiod_lookup_table viafb_gpio_table = { + .dev_id = "viafb-camera", + .table = { + GPIO_LOOKUP("via-gpio", 2, "VGPIO2", GPIO_ACTIVE_LOW), + GPIO_LOOKUP("via-gpio", 3, "VGPIO3", GPIO_ACTIVE_HIGH), + { } + }, +}; /* * Platform device stuff. @@ -249,12 +244,16 @@ static int viafb_gpio_probe(struct platform_device *platdev) * Get registered. */ viafb_gpio_config.gpio_chip.base = -1; /* Dynamic */ + viafb_gpio_config.gpio_chip.label = "via-gpio"; ret = gpiochip_add_data(&viafb_gpio_config.gpio_chip, &viafb_gpio_config); if (ret) { printk(KERN_ERR "viafb: failed to add gpios (%d)\n", ret); viafb_gpio_config.gpio_chip.ngpio = 0; } + + gpiod_add_lookup_table(&viafb_gpio_table); + #ifdef CONFIG_PM viafb_pm_register(&viafb_gpio_pm_hooks); #endif @@ -262,7 +261,7 @@ static int viafb_gpio_probe(struct platform_device *platdev) } -static int viafb_gpio_remove(struct platform_device *platdev) +static void viafb_gpio_remove(struct platform_device *platdev) { unsigned long flags; int i; @@ -285,7 +284,6 @@ static int viafb_gpio_remove(struct platform_device *platdev) viafb_gpio_disable(viafb_gpio_config.active_gpios[i]); viafb_gpio_config.gpio_chip.ngpio = 0; spin_unlock_irqrestore(&viafb_gpio_config.vdev->reg_lock, flags); - return 0; } static struct platform_driver via_gpio_driver = { |