diff options
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/backlight.h | 94 | ||||
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/device.h | 4 | ||||
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_kmod.c | 1 | ||||
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_pci.c | 83 | ||||
| -rw-r--r-- | sys/conf/kmod.mk | 1 |
5 files changed, 183 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/backlight.h b/sys/compat/linuxkpi/common/include/linux/backlight.h new file mode 100644 index 000000000000..1d2224811124 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/backlight.h @@ -0,0 +1,94 @@ +/*- + * Copyright (c) 2020 The FreeBSD Foundation + * + * This software was developed by Emmanuel Vadot under sponsorship + * from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LINUX_BACKLIGHT_H_ +#define _LINUX_BACKLIGHT_H_ + +#include <linux/notifier.h> + +struct backlight_device; + +enum backlight_type { + BACKLIGHT_RAW = 0, +}; + +struct backlight_properties { + int type; + int max_brightness; + int brightness; + int power; +}; + +enum backlight_notification { + BACKLIGHT_REGISTERED, + BACKLIGHT_UNREGISTERED, +}; + +enum backlight_update_reason { + BACKLIGHT_UPDATE_HOTKEY = 0 +}; + +struct backlight_ops { + int options; +#define BL_CORE_SUSPENDRESUME 1 + int (*update_status)(struct backlight_device *); + int (*get_brightness)(struct backlight_device *); +}; + +struct backlight_device { + const struct backlight_ops *ops; + struct backlight_properties props; + void *data; + struct device *dev; + char *name; +}; + +#define bl_get_data(bd) (bd)->data + +struct backlight_device *linux_backlight_device_register(const char *name, + struct device *dev, void *data, const struct backlight_ops *ops, struct backlight_properties *props); +void linux_backlight_device_unregister(struct backlight_device *bd); +#define backlight_device_register(name, dev, data, ops, props) \ + linux_backlight_device_register(name, dev, data, ops, props) +#define backlight_device_unregister(bd) linux_backlight_device_unregister(bd) + +static inline void +backlight_update_status(struct backlight_device *bd) +{ + bd->ops->update_status(bd); +} + +static inline void +backlight_force_update(struct backlight_device *bd, int reason) +{ + bd->props.brightness = bd->ops->get_brightness(bd); +} + +#endif /* _LINUX_BACKLIGHT_H_ */ diff --git a/sys/compat/linuxkpi/common/include/linux/device.h b/sys/compat/linuxkpi/common/include/linux/device.h index 5361236baea8..a55f6b0215ce 100644 --- a/sys/compat/linuxkpi/common/include/linux/device.h +++ b/sys/compat/linuxkpi/common/include/linux/device.h @@ -41,9 +41,11 @@ #include <linux/module.h> #include <linux/workqueue.h> #include <linux/kdev_t.h> +#include <linux/backlight.h> #include <asm/atomic.h> #include <sys/bus.h> +#include <sys/backlight.h> struct device; struct fwnode_handle; @@ -114,6 +116,8 @@ struct device { unsigned int irq_end; const struct attribute_group **groups; struct fwnode_handle *fwnode; + struct cdev *backlight_dev; + struct backlight_device *bd; spinlock_t devres_lock; struct list_head devres_head; diff --git a/sys/compat/linuxkpi/common/src/linux_kmod.c b/sys/compat/linuxkpi/common/src/linux_kmod.c index 4e395ae5e1b2..b9a916da650f 100644 --- a/sys/compat/linuxkpi/common/src/linux_kmod.c +++ b/sys/compat/linuxkpi/common/src/linux_kmod.c @@ -31,4 +31,5 @@ __FBSDID("$FreeBSD$"); #include <sys/module.h> MODULE_VERSION(linuxkpi, 1); +MODULE_DEPEND(linuxkpi, backlight, 1, 1, 1); MODULE_DEPEND(linuxkpi, pci, 1, 1, 1); diff --git a/sys/compat/linuxkpi/common/src/linux_pci.c b/sys/compat/linuxkpi/common/src/linux_pci.c index ed04d47c462a..b7962f3bdbaf 100644 --- a/sys/compat/linuxkpi/common/src/linux_pci.c +++ b/sys/compat/linuxkpi/common/src/linux_pci.c @@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$"); #include <dev/pci/pcivar.h> #include <dev/pci/pci_private.h> #include <dev/pci/pci_iov.h> +#include <dev/backlight/backlight.h> #include <linux/kobject.h> #include <linux/device.h> @@ -64,6 +65,10 @@ __FBSDID("$FreeBSD$"); #include <linux/pci.h> #include <linux/compat.h> +#include <linux/backlight.h> + +#include "backlight_if.h" + static device_probe_t linux_pci_probe; static device_attach_t linux_pci_attach; static device_detach_t linux_pci_detach; @@ -73,6 +78,9 @@ static device_shutdown_t linux_pci_shutdown; static pci_iov_init_t linux_pci_iov_init; static pci_iov_uninit_t linux_pci_iov_uninit; static pci_iov_add_vf_t linux_pci_iov_add_vf; +static int linux_backlight_get_status(device_t dev, struct backlight_props *props); +static int linux_backlight_update_status(device_t dev, struct backlight_props *props); +static int linux_backlight_get_info(device_t dev, struct backlight_info *info); static device_method_t pci_methods[] = { DEVMETHOD(device_probe, linux_pci_probe), @@ -84,6 +92,11 @@ static device_method_t pci_methods[] = { DEVMETHOD(pci_iov_init, linux_pci_iov_init), DEVMETHOD(pci_iov_uninit, linux_pci_iov_uninit), DEVMETHOD(pci_iov_add_vf, linux_pci_iov_add_vf), + + /* backlight interface */ + DEVMETHOD(backlight_update_status, linux_backlight_update_status), + DEVMETHOD(backlight_get_status, linux_backlight_get_status), + DEVMETHOD(backlight_get_info, linux_backlight_get_info), DEVMETHOD_END }; @@ -951,3 +964,73 @@ linux_dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t dma_addr) uma_zfree_arg(pool->pool_zone, obj, pool); } + +static int +linux_backlight_get_status(device_t dev, struct backlight_props *props) +{ + struct pci_dev *pdev; + + linux_set_current(curthread); + pdev = device_get_softc(dev); + + props->brightness = pdev->dev.bd->props.brightness; + props->brightness = props->brightness * 100 / pdev->dev.bd->props.max_brightness; + props->nlevels = 0; + + return (0); +} + +static int +linux_backlight_get_info(device_t dev, struct backlight_info *info) +{ + struct pci_dev *pdev; + + linux_set_current(curthread); + pdev = device_get_softc(dev); + + info->type = BACKLIGHT_TYPE_PANEL; + strlcpy(info->name, pdev->dev.bd->name, BACKLIGHTMAXNAMELENGTH); + return (0); +} + +static int +linux_backlight_update_status(device_t dev, struct backlight_props *props) +{ + struct pci_dev *pdev; + + linux_set_current(curthread); + pdev = device_get_softc(dev); + + pdev->dev.bd->props.brightness = pdev->dev.bd->props.max_brightness * + props->brightness / 100; + return (pdev->dev.bd->ops->update_status(pdev->dev.bd)); +} + +struct backlight_device * +linux_backlight_device_register(const char *name, struct device *dev, + void *data, const struct backlight_ops *ops, struct backlight_properties *props) +{ + + dev->bd = malloc(sizeof(*dev->bd), M_DEVBUF, M_WAITOK | M_ZERO); + dev->bd->ops = ops; + dev->bd->props.type = props->type; + dev->bd->props.max_brightness = props->max_brightness; + dev->bd->props.brightness = props->brightness; + dev->bd->props.power = props->power; + dev->bd->data = data; + dev->bd->dev = dev; + dev->bd->name = strdup(name, M_DEVBUF); + + dev->backlight_dev = backlight_register(name, dev->bsddev); + + return (dev->bd); +} + +void +linux_backlight_device_unregister(struct backlight_device *bd) +{ + + backlight_destroy(bd->dev->backlight_dev); + free(bd->name, M_DEVBUF); + free(bd, M_DEVBUF); +} diff --git a/sys/conf/kmod.mk b/sys/conf/kmod.mk index e60e49dc9eb5..7d89975c0479 100644 --- a/sys/conf/kmod.mk +++ b/sys/conf/kmod.mk @@ -91,6 +91,7 @@ CFLAGS+= -fno-strict-aliasing WERROR?= -Werror LINUXKPI_GENSRCS+= \ + backlight_if.h \ bus_if.h \ device_if.h \ pci_if.h \ |