[PATCH 4/6] drm/tinydrm: Embed drm_device in tinydrm_device
Daniel Vetter
daniel at ffwll.ch
Mon Aug 28 21:47:04 UTC 2017
On Mon, Aug 28, 2017 at 07:17:46PM +0200, Noralf Trønnes wrote:
> Might as well embed drm_device since tinydrm_device (embeds pipe struct
> and fbdev pointer) needs to stick around after driver-device unbind to
> handle open fd's after device removal.
>
> Cc: David Lechner <david at lechnology.com>
> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
I think you should be able to merge this right away, and it's definitely a
nice cleanup.
Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 44 ++++++++++++-----------------
> drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c | 2 +-
> drivers/gpu/drm/tinydrm/mi0283qt.c | 8 +++---
> drivers/gpu/drm/tinydrm/mipi-dbi.c | 12 ++++----
> drivers/gpu/drm/tinydrm/repaper.c | 10 +++----
> drivers/gpu/drm/tinydrm/st7586.c | 16 +++++------
> include/drm/tinydrm/tinydrm.h | 9 +++++-
> 7 files changed, 50 insertions(+), 51 deletions(-)
>
> diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
> index 551709e..f11f4cd 100644
> --- a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
> +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c
> @@ -44,7 +44,7 @@
> */
> void tinydrm_lastclose(struct drm_device *drm)
> {
> - struct tinydrm_device *tdev = drm->dev_private;
> + struct tinydrm_device *tdev = drm_to_tinydrm(drm);
>
> DRM_DEBUG_KMS("\n");
> drm_fbdev_cma_restore_mode(tdev->fbdev_cma);
> @@ -126,7 +126,7 @@ static struct drm_framebuffer *
> tinydrm_fb_create(struct drm_device *drm, struct drm_file *file_priv,
> const struct drm_mode_fb_cmd2 *mode_cmd)
> {
> - struct tinydrm_device *tdev = drm->dev_private;
> + struct tinydrm_device *tdev = drm_to_tinydrm(drm);
>
> return drm_fb_cma_create_with_funcs(drm, file_priv, mode_cmd,
> tdev->fb_funcs);
> @@ -142,23 +142,16 @@ static int tinydrm_init(struct device *parent, struct tinydrm_device *tdev,
> const struct drm_framebuffer_funcs *fb_funcs,
> struct drm_driver *driver)
> {
> - struct drm_device *drm;
> + struct drm_device *drm = &tdev->drm;
> + int ret;
>
> mutex_init(&tdev->dirty_lock);
> tdev->fb_funcs = fb_funcs;
>
> - /*
> - * We don't embed drm_device, because that prevent us from using
> - * devm_kzalloc() to allocate tinydrm_device in the driver since
> - * drm_dev_unref() frees the structure. The devm_ functions provide
> - * for easy error handling.
> - */
> - drm = drm_dev_alloc(driver, parent);
> - if (IS_ERR(drm))
> - return PTR_ERR(drm);
> -
> - tdev->drm = drm;
> - drm->dev_private = tdev;
> + ret = drm_dev_init(drm, driver, parent);
> + if (ret)
> + return ret;
> +
> drm_mode_config_init(drm);
> drm->mode_config.funcs = &tinydrm_mode_config_funcs;
>
> @@ -167,10 +160,9 @@ static int tinydrm_init(struct device *parent, struct tinydrm_device *tdev,
>
> static void tinydrm_fini(struct tinydrm_device *tdev)
> {
> - drm_mode_config_cleanup(tdev->drm);
> + drm_mode_config_cleanup(&tdev->drm);
> mutex_destroy(&tdev->dirty_lock);
> - tdev->drm->dev_private = NULL;
> - drm_dev_unref(tdev->drm);
> + drm_dev_unref(&tdev->drm);
> }
>
> static void devm_tinydrm_release(void *data)
> @@ -212,12 +204,12 @@ EXPORT_SYMBOL(devm_tinydrm_init);
>
> static int tinydrm_register(struct tinydrm_device *tdev)
> {
> - struct drm_device *drm = tdev->drm;
> + struct drm_device *drm = &tdev->drm;
> int bpp = drm->mode_config.preferred_depth;
> struct drm_fbdev_cma *fbdev;
> int ret;
>
> - ret = drm_dev_register(tdev->drm, 0);
> + ret = drm_dev_register(drm, 0);
> if (ret)
> return ret;
>
> @@ -236,10 +228,10 @@ static void tinydrm_unregister(struct tinydrm_device *tdev)
> {
> struct drm_fbdev_cma *fbdev_cma = tdev->fbdev_cma;
>
> - drm_atomic_helper_shutdown(tdev->drm);
> + drm_atomic_helper_shutdown(&tdev->drm);
> /* don't restore fbdev in lastclose, keep pipeline disabled */
> tdev->fbdev_cma = NULL;
> - drm_dev_unregister(tdev->drm);
> + drm_dev_unregister(&tdev->drm);
> if (fbdev_cma)
> drm_fbdev_cma_fini(fbdev_cma);
> }
> @@ -262,7 +254,7 @@ static void devm_tinydrm_register_release(void *data)
> */
> int devm_tinydrm_register(struct tinydrm_device *tdev)
> {
> - struct device *dev = tdev->drm->dev;
> + struct device *dev = tdev->drm.dev;
> int ret;
>
> ret = tinydrm_register(tdev);
> @@ -287,7 +279,7 @@ EXPORT_SYMBOL(devm_tinydrm_register);
> */
> void tinydrm_shutdown(struct tinydrm_device *tdev)
> {
> - drm_atomic_helper_shutdown(tdev->drm);
> + drm_atomic_helper_shutdown(&tdev->drm);
> }
> EXPORT_SYMBOL(tinydrm_shutdown);
>
> @@ -312,7 +304,7 @@ int tinydrm_suspend(struct tinydrm_device *tdev)
> }
>
> drm_fbdev_cma_set_suspend_unlocked(tdev->fbdev_cma, 1);
> - state = drm_atomic_helper_suspend(tdev->drm);
> + state = drm_atomic_helper_suspend(&tdev->drm);
> if (IS_ERR(state)) {
> drm_fbdev_cma_set_suspend_unlocked(tdev->fbdev_cma, 0);
> return PTR_ERR(state);
> @@ -346,7 +338,7 @@ int tinydrm_resume(struct tinydrm_device *tdev)
>
> tdev->suspend_state = NULL;
>
> - ret = drm_atomic_helper_resume(tdev->drm, state);
> + ret = drm_atomic_helper_resume(&tdev->drm, state);
> if (ret) {
> DRM_ERROR("Error resuming state: %d\n", ret);
> return ret;
> diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
> index 177e9d8..1bcb43a 100644
> --- a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
> +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
> @@ -198,7 +198,7 @@ tinydrm_display_pipe_init(struct tinydrm_device *tdev,
> const struct drm_display_mode *mode,
> unsigned int rotation)
> {
> - struct drm_device *drm = tdev->drm;
> + struct drm_device *drm = &tdev->drm;
> struct drm_display_mode *mode_copy;
> struct drm_connector *connector;
> int ret;
> diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
> index 7e5bb7d..77d40c9 100644
> --- a/drivers/gpu/drm/tinydrm/mi0283qt.c
> +++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
> @@ -23,7 +23,7 @@
> static int mi0283qt_init(struct mipi_dbi *mipi)
> {
> struct tinydrm_device *tdev = &mipi->tinydrm;
> - struct device *dev = tdev->drm->dev;
> + struct device *dev = tdev->drm.dev;
> u8 addr_mode;
> int ret;
>
> @@ -169,7 +169,7 @@ static int mi0283qt_probe(struct spi_device *spi)
> u32 rotation = 0;
> int ret;
>
> - mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
> + mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
> if (!mipi)
> return -ENOMEM;
>
> @@ -224,9 +224,9 @@ static int mi0283qt_probe(struct spi_device *spi)
> spi_set_drvdata(spi, mipi);
>
> DRM_DEBUG_DRIVER("Initialized %s:%s @%uMHz on minor %d\n",
> - tdev->drm->driver->name, dev_name(dev),
> + tdev->drm.driver->name, dev_name(dev),
> spi->max_speed_hz / 1000000,
> - tdev->drm->primary->index);
> + tdev->drm.primary->index);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/tinydrm/mipi-dbi.c
> index 2caeabc..c22e352 100644
> --- a/drivers/gpu/drm/tinydrm/mipi-dbi.c
> +++ b/drivers/gpu/drm/tinydrm/mipi-dbi.c
> @@ -199,7 +199,7 @@ static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb,
> unsigned int num_clips)
> {
> struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
> - struct tinydrm_device *tdev = fb->dev->dev_private;
> + struct tinydrm_device *tdev = drm_to_tinydrm(fb->dev);
> struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
> bool swap = mipi->swap_bytes;
> struct drm_clip_rect clip;
> @@ -285,7 +285,7 @@ EXPORT_SYMBOL(mipi_dbi_pipe_enable);
>
> static void mipi_dbi_blank(struct mipi_dbi *mipi)
> {
> - struct drm_device *drm = mipi->tinydrm.drm;
> + struct drm_device *drm = &mipi->tinydrm.drm;
> u16 height = drm->mode_config.min_height;
> u16 width = drm->mode_config.min_width;
> size_t len = width * height * 2;
> @@ -380,13 +380,13 @@ int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
> if (ret)
> return ret;
>
> - tdev->drm->mode_config.preferred_depth = 16;
> + tdev->drm.mode_config.preferred_depth = 16;
> mipi->rotation = rotation;
>
> - drm_mode_config_reset(tdev->drm);
> + drm_mode_config_reset(&tdev->drm);
>
> DRM_DEBUG_KMS("preferred_depth=%u, rotation = %u\n",
> - tdev->drm->mode_config.preferred_depth, rotation);
> + tdev->drm.mode_config.preferred_depth, rotation);
>
> return 0;
> }
> @@ -975,7 +975,7 @@ static const struct drm_info_list mipi_dbi_debugfs_list[] = {
> */
> int mipi_dbi_debugfs_init(struct drm_minor *minor)
> {
> - struct tinydrm_device *tdev = minor->dev->dev_private;
> + struct tinydrm_device *tdev = drm_to_tinydrm(minor->dev);
> struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
> umode_t mode = S_IFREG | S_IWUSR;
>
> diff --git a/drivers/gpu/drm/tinydrm/repaper.c b/drivers/gpu/drm/tinydrm/repaper.c
> index 30dc97b..b8fc8eb 100644
> --- a/drivers/gpu/drm/tinydrm/repaper.c
> +++ b/drivers/gpu/drm/tinydrm/repaper.c
> @@ -528,7 +528,7 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb,
> {
> struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
> struct dma_buf_attachment *import_attach = cma_obj->base.import_attach;
> - struct tinydrm_device *tdev = fb->dev->dev_private;
> + struct tinydrm_device *tdev = drm_to_tinydrm(fb->dev);
> struct repaper_epd *epd = epd_from_tinydrm(tdev);
> struct drm_clip_rect clip;
> u8 *buf = NULL;
> @@ -949,7 +949,7 @@ static int repaper_probe(struct spi_device *spi)
> }
> }
>
> - epd = devm_kzalloc(dev, sizeof(*epd), GFP_KERNEL);
> + epd = kzalloc(sizeof(*epd), GFP_KERNEL);
> if (!epd)
> return -ENOMEM;
>
> @@ -1077,7 +1077,7 @@ static int repaper_probe(struct spi_device *spi)
> if (ret)
> return ret;
>
> - drm_mode_config_reset(tdev->drm);
> + drm_mode_config_reset(&tdev->drm);
>
> ret = devm_tinydrm_register(tdev);
> if (ret)
> @@ -1086,9 +1086,9 @@ static int repaper_probe(struct spi_device *spi)
> spi_set_drvdata(spi, tdev);
>
> DRM_DEBUG_DRIVER("Initialized %s:%s @%uMHz on minor %d\n",
> - tdev->drm->driver->name, dev_name(dev),
> + tdev->drm.driver->name, dev_name(dev),
> spi->max_speed_hz / 1000000,
> - tdev->drm->primary->index);
> + tdev->drm.primary->index);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c
> index b439956..bc2b905 100644
> --- a/drivers/gpu/drm/tinydrm/st7586.c
> +++ b/drivers/gpu/drm/tinydrm/st7586.c
> @@ -112,7 +112,7 @@ static int st7586_fb_dirty(struct drm_framebuffer *fb,
> unsigned int color, struct drm_clip_rect *clips,
> unsigned int num_clips)
> {
> - struct tinydrm_device *tdev = fb->dev->dev_private;
> + struct tinydrm_device *tdev = drm_to_tinydrm(fb->dev);
> struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
> struct drm_clip_rect clip;
> int start, end;
> @@ -178,7 +178,7 @@ static void st7586_pipe_enable(struct drm_simple_display_pipe *pipe,
> struct tinydrm_device *tdev = pipe_to_tinydrm(pipe);
> struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev);
> struct drm_framebuffer *fb = pipe->plane.fb;
> - struct device *dev = tdev->drm->dev;
> + struct device *dev = tdev->drm.dev;
> int ret;
> u8 addr_mode;
>
> @@ -290,13 +290,13 @@ static int st7586_init(struct device *dev, struct mipi_dbi *mipi,
> if (ret)
> return ret;
>
> - tdev->drm->mode_config.preferred_depth = 32;
> + tdev->drm.mode_config.preferred_depth = 32;
> mipi->rotation = rotation;
>
> - drm_mode_config_reset(tdev->drm);
> + drm_mode_config_reset(&tdev->drm);
>
> DRM_DEBUG_KMS("preferred_depth=%u, rotation = %u\n",
> - tdev->drm->mode_config.preferred_depth, rotation);
> + tdev->drm.mode_config.preferred_depth, rotation);
>
> return 0;
> }
> @@ -349,7 +349,7 @@ static int st7586_probe(struct spi_device *spi)
> u32 rotation = 0;
> int ret;
>
> - mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
> + mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
> if (!mipi)
> return -ENOMEM;
>
> @@ -397,9 +397,9 @@ static int st7586_probe(struct spi_device *spi)
> spi_set_drvdata(spi, mipi);
>
> DRM_DEBUG_DRIVER("Initialized %s:%s @%uMHz on minor %d\n",
> - tdev->drm->driver->name, dev_name(dev),
> + tdev->drm.driver->name, dev_name(dev),
> spi->max_speed_hz / 1000000,
> - tdev->drm->primary->index);
> + tdev->drm.primary->index);
>
> return 0;
> }
> diff --git a/include/drm/tinydrm/tinydrm.h b/include/drm/tinydrm/tinydrm.h
> index 4774fe3..ded9817 100644
> --- a/include/drm/tinydrm/tinydrm.h
> +++ b/include/drm/tinydrm/tinydrm.h
> @@ -10,6 +10,7 @@
> #ifndef __LINUX_TINYDRM_H
> #define __LINUX_TINYDRM_H
>
> +#include <drm/drmP.h>
> #include <drm/drm_gem_cma_helper.h>
> #include <drm/drm_fb_cma_helper.h>
> #include <drm/drm_simple_kms_helper.h>
> @@ -24,7 +25,7 @@
> * @fb_funcs: Framebuffer functions used when creating framebuffers
> */
> struct tinydrm_device {
> - struct drm_device *drm;
> + struct drm_device drm;
> struct drm_simple_display_pipe pipe;
> struct mutex dirty_lock;
> struct drm_fbdev_cma *fbdev_cma;
> @@ -33,6 +34,12 @@ struct tinydrm_device {
> };
>
> static inline struct tinydrm_device *
> +drm_to_tinydrm(struct drm_device *drm)
> +{
> + return container_of(drm, struct tinydrm_device, drm);
> +}
> +
> +static inline struct tinydrm_device *
> pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
> {
> return container_of(pipe, struct tinydrm_device, pipe);
> --
> 2.7.4
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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