summaryrefslogtreecommitdiffstats
path: root/drivers/video/via/via-gpio.c
diff options
context:
space:
mode:
authorTomi Valkeinen <tomi.valkeinen@ti.com>2014-02-13 15:31:38 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2014-04-17 08:10:19 +0300
commitf7018c21350204c4cf628462f229d44d03545254 (patch)
tree408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/via/via-gpio.c
parentc26ef3eb3c11274bad1b64498d0a134f85755250 (diff)
downloadblackbird-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.c316
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);
-}
OpenPOWER on IntegriCloud