diff options
author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 15:31:38 +0200 |
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committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 08:10:19 +0300 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/via/via-gpio.c | |
parent | c26ef3eb3c11274bad1b64498d0a134f85755250 (diff) | |
download | blackbird-op-linux-f7018c21350204c4cf628462f229d44d03545254.tar.gz blackbird-op-linux-f7018c21350204c4cf628462f229d44d03545254.zip |
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.
Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.
No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/via/via-gpio.c')
-rw-r--r-- | drivers/video/via/via-gpio.c | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/drivers/video/via/via-gpio.c b/drivers/video/via/via-gpio.c deleted file mode 100644 index e408679081ab..000000000000 --- a/drivers/video/via/via-gpio.c +++ /dev/null @@ -1,316 +0,0 @@ -/* - * 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.h> -#include <linux/platform_device.h> -#include <linux/via-core.h> -#include <linux/via-gpio.h> -#include <linux/export.h> - -/* - * The ports we know about. Note that the port-25 gpios are not - * mentioned in the datasheet. - */ - -struct viafb_gpio { - char *vg_name; /* Data sheet name */ - u16 vg_io_port; - u8 vg_port_index; - int vg_mask_shift; -}; - -static struct viafb_gpio viafb_all_gpios[] = { - { - .vg_name = "VGPIO0", /* Guess - not in datasheet */ - .vg_io_port = VIASR, - .vg_port_index = 0x25, - .vg_mask_shift = 1 - }, - { - .vg_name = "VGPIO1", - .vg_io_port = VIASR, - .vg_port_index = 0x25, - .vg_mask_shift = 0 - }, - { - .vg_name = "VGPIO2", /* aka DISPCLKI0 */ - .vg_io_port = VIASR, - .vg_port_index = 0x2c, - .vg_mask_shift = 1 - }, - { - .vg_name = "VGPIO3", /* aka DISPCLKO0 */ - .vg_io_port = VIASR, - .vg_port_index = 0x2c, - .vg_mask_shift = 0 - }, - { - .vg_name = "VGPIO4", /* DISPCLKI1 */ - .vg_io_port = VIASR, - .vg_port_index = 0x3d, - .vg_mask_shift = 1 - }, - { - .vg_name = "VGPIO5", /* DISPCLKO1 */ - .vg_io_port = VIASR, - .vg_port_index = 0x3d, - .vg_mask_shift = 0 - }, -}; - -#define VIAFB_NUM_GPIOS ARRAY_SIZE(viafb_all_gpios) - -/* - * This structure controls the active GPIOs, which may be a subset - * of those which are known. - */ - -struct viafb_gpio_cfg { - struct gpio_chip gpio_chip; - struct viafb_dev *vdev; - struct viafb_gpio *active_gpios[VIAFB_NUM_GPIOS]; - const char *gpio_names[VIAFB_NUM_GPIOS]; -}; - -/* - * GPIO access functions - */ -static void via_gpio_set(struct gpio_chip *chip, unsigned int nr, - int value) -{ - struct viafb_gpio_cfg *cfg = container_of(chip, - struct viafb_gpio_cfg, - gpio_chip); - u8 reg; - struct viafb_gpio *gpio; - unsigned long flags; - - spin_lock_irqsave(&cfg->vdev->reg_lock, flags); - gpio = cfg->active_gpios[nr]; - reg = via_read_reg(VIASR, gpio->vg_port_index); - reg |= 0x40 << gpio->vg_mask_shift; /* output enable */ - if (value) - reg |= 0x10 << gpio->vg_mask_shift; - else - reg &= ~(0x10 << gpio->vg_mask_shift); - via_write_reg(VIASR, gpio->vg_port_index, reg); - spin_unlock_irqrestore(&cfg->vdev->reg_lock, flags); -} - -static int via_gpio_dir_out(struct gpio_chip *chip, unsigned int nr, - int value) -{ - via_gpio_set(chip, nr, value); - return 0; -} - -/* - * Set the input direction. I'm not sure this is right; we should - * be able to do input without disabling output. - */ -static int via_gpio_dir_input(struct gpio_chip *chip, unsigned int nr) -{ - struct viafb_gpio_cfg *cfg = container_of(chip, - struct viafb_gpio_cfg, - gpio_chip); - struct viafb_gpio *gpio; - unsigned long flags; - - spin_lock_irqsave(&cfg->vdev->reg_lock, flags); - gpio = cfg->active_gpios[nr]; - via_write_reg_mask(VIASR, gpio->vg_port_index, 0, - 0x40 << gpio->vg_mask_shift); - spin_unlock_irqrestore(&cfg->vdev->reg_lock, flags); - return 0; -} - -static int via_gpio_get(struct gpio_chip *chip, unsigned int nr) -{ - struct viafb_gpio_cfg *cfg = container_of(chip, - struct viafb_gpio_cfg, - gpio_chip); - u8 reg; - struct viafb_gpio *gpio; - unsigned long flags; - - spin_lock_irqsave(&cfg->vdev->reg_lock, flags); - gpio = cfg->active_gpios[nr]; - reg = via_read_reg(VIASR, gpio->vg_port_index); - spin_unlock_irqrestore(&cfg->vdev->reg_lock, flags); - return reg & (0x04 << gpio->vg_mask_shift); -} - - -static struct viafb_gpio_cfg viafb_gpio_config = { - .gpio_chip = { - .label = "VIAFB onboard GPIO", - .owner = THIS_MODULE, - .direction_output = via_gpio_dir_out, - .set = via_gpio_set, - .direction_input = via_gpio_dir_input, - .get = via_gpio_get, - .base = -1, - .ngpio = 0, - .can_sleep = 0 - } -}; - -/* - * Manage the software enable bit. - */ -static void viafb_gpio_enable(struct viafb_gpio *gpio) -{ - via_write_reg_mask(VIASR, gpio->vg_port_index, 0x02, 0x02); -} - -static void viafb_gpio_disable(struct viafb_gpio *gpio) -{ - via_write_reg_mask(VIASR, gpio->vg_port_index, 0, 0x02); -} - -#ifdef CONFIG_PM - -static int viafb_gpio_suspend(void *private) -{ - return 0; -} - -static int viafb_gpio_resume(void *private) -{ - int i; - - for (i = 0; i < viafb_gpio_config.gpio_chip.ngpio; i += 2) - viafb_gpio_enable(viafb_gpio_config.active_gpios[i]); - return 0; -} - -static struct viafb_pm_hooks viafb_gpio_pm_hooks = { - .suspend = viafb_gpio_suspend, - .resume = viafb_gpio_resume -}; -#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); - -/* - * Platform device stuff. - */ -static int viafb_gpio_probe(struct platform_device *platdev) -{ - struct viafb_dev *vdev = platdev->dev.platform_data; - struct via_port_cfg *port_cfg = vdev->port_cfg; - int i, ngpio = 0, ret; - struct viafb_gpio *gpio; - unsigned long flags; - - /* - * Set up entries for all GPIOs which have been configured to - * operate as such (as opposed to as i2c ports). - */ - for (i = 0; i < VIAFB_NUM_PORTS; i++) { - if (port_cfg[i].mode != VIA_MODE_GPIO) - continue; - for (gpio = viafb_all_gpios; - gpio < viafb_all_gpios + VIAFB_NUM_GPIOS; gpio++) - if (gpio->vg_port_index == port_cfg[i].ioport_index) { - viafb_gpio_config.active_gpios[ngpio] = gpio; - viafb_gpio_config.gpio_names[ngpio] = - gpio->vg_name; - ngpio++; - } - } - viafb_gpio_config.gpio_chip.ngpio = ngpio; - viafb_gpio_config.gpio_chip.names = viafb_gpio_config.gpio_names; - viafb_gpio_config.vdev = vdev; - if (ngpio == 0) { - printk(KERN_INFO "viafb: no GPIOs configured\n"); - return 0; - } - /* - * Enable the ports. They come in pairs, with a single - * enable bit for both. - */ - spin_lock_irqsave(&viafb_gpio_config.vdev->reg_lock, flags); - for (i = 0; i < ngpio; i += 2) - viafb_gpio_enable(viafb_gpio_config.active_gpios[i]); - spin_unlock_irqrestore(&viafb_gpio_config.vdev->reg_lock, flags); - /* - * Get registered. - */ - viafb_gpio_config.gpio_chip.base = -1; /* Dynamic */ - ret = gpiochip_add(&viafb_gpio_config.gpio_chip); - if (ret) { - printk(KERN_ERR "viafb: failed to add gpios (%d)\n", ret); - viafb_gpio_config.gpio_chip.ngpio = 0; - } -#ifdef CONFIG_PM - viafb_pm_register(&viafb_gpio_pm_hooks); -#endif - return ret; -} - - -static int viafb_gpio_remove(struct platform_device *platdev) -{ - unsigned long flags; - int ret = 0, i; - -#ifdef CONFIG_PM - viafb_pm_unregister(&viafb_gpio_pm_hooks); -#endif - - /* - * Get unregistered. - */ - if (viafb_gpio_config.gpio_chip.ngpio > 0) { - ret = gpiochip_remove(&viafb_gpio_config.gpio_chip); - if (ret) { /* Somebody still using it? */ - printk(KERN_ERR "Viafb: GPIO remove failed\n"); - return ret; - } - } - /* - * Disable the ports. - */ - spin_lock_irqsave(&viafb_gpio_config.vdev->reg_lock, flags); - for (i = 0; i < viafb_gpio_config.gpio_chip.ngpio; i += 2) - 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 ret; -} - -static struct platform_driver via_gpio_driver = { - .driver = { - .name = "viafb-gpio", - }, - .probe = viafb_gpio_probe, - .remove = viafb_gpio_remove, -}; - -int viafb_gpio_init(void) -{ - return platform_driver_register(&via_gpio_driver); -} - -void viafb_gpio_exit(void) -{ - platform_driver_unregister(&via_gpio_driver); -} |