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drm/tinydrm: Make fb_dirty into a lower level hook 

mipi_dbi_enable_flush() wants to call the fb->dirty() hook from the
bowels of the .atomic_enable() hook. That prevents us from taking the
plane mutex in fb->dirty() unless we also plumb down the acquire
context.

Instead it seems simpler to split the fb->dirty() into a tinydrm
specific lower level hook that can be called from
mipi_dbi_enable_flush() and from a generic higher level
tinydrm_fb_dirty() helper. As we don't have a tinydrm specific
vfuncs table we'll just stick it into tinydrm_device directly
for now.

v2: Deal with the fb->dirty() in tinydrm_display_pipe_update() as well (Noralf)

Cc: "Noralf Trønnes" <noralf@tronnes.org>
Cc: David Lechner <david@lechnology.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180323153509.15287-1-ville.syrjala@linux.intel.com
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Noralf Trønnes <noralf@tronnes.org>
hifive-unleashed-5.1
Ville Syrjälä 2018-03-23 17:35:09 +02:00
parent 0c9c7fd00e
commit e85d30060e
11 changed files with 78 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
View File

@ -78,6 +78,36 @@ bool tinydrm_merge_clips(struct drm_clip_rect *dst,
}
EXPORT_SYMBOL(tinydrm_merge_clips);
int tinydrm_fb_dirty(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int flags, unsigned int color,
struct drm_clip_rect *clips,
unsigned int num_clips)
{
struct tinydrm_device *tdev = fb->dev->dev_private;
struct drm_plane *plane = &tdev->pipe.plane;
int ret = 0;
drm_modeset_lock(&plane->mutex, NULL);
/* fbdev can flush even when we're not interested */
if (plane->state->fb == fb) {
mutex_lock(&tdev->dirty_lock);
ret = tdev->fb_dirty(fb, file_priv, flags,
color, clips, num_clips);
mutex_unlock(&tdev->dirty_lock);
}
drm_modeset_unlock(&plane->mutex);
if (ret)
dev_err_once(fb->dev->dev,
"Failed to update display %d\n", ret);
return ret;
}
EXPORT_SYMBOL(tinydrm_fb_dirty);
/**
* tinydrm_memcpy - Copy clip buffer
* @dst: Destination buffer

5
drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
View File

@ -125,9 +125,8 @@ void tinydrm_display_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_crtc *crtc = &tdev->pipe.crtc;
if (fb && (fb != old_state->fb)) {
pipe->plane.fb = fb;
if (fb->funcs->dirty)
fb->funcs->dirty(fb, NULL, 0, 0, NULL, 0);
if (tdev->fb_dirty)
tdev->fb_dirty(fb, NULL, 0, 0, NULL, 0);
}
if (crtc->state->event) {

23
drivers/gpu/drm/tinydrm/ili9225.c
View File

@ -88,14 +88,8 @@ static int ili9225_fb_dirty(struct drm_framebuffer *fb,
bool full;
void *tr;
mutex_lock(&tdev->dirty_lock);
if (!mipi->enabled)
goto out_unlock;
/* fbdev can flush even when we're not interested */
if (tdev->pipe.plane.fb != fb)
goto out_unlock;
return 0;
full = tinydrm_merge_clips(&clip, clips, num_clips, flags,
fb->width, fb->height);
@ -108,7 +102,7 @@ static int ili9225_fb_dirty(struct drm_framebuffer *fb,
tr = mipi->tx_buf;
ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, &clip, swap);
if (ret)
goto out_unlock;
return ret;
} else {
tr = cma_obj->vaddr;
}
@ -159,20 +153,13 @@ static int ili9225_fb_dirty(struct drm_framebuffer *fb,
ret = mipi_dbi_command_buf(mipi, ILI9225_WRITE_DATA_TO_GRAM, tr,
(clip.x2 - clip.x1) * (clip.y2 - clip.y1) * 2);
out_unlock:
mutex_unlock(&tdev->dirty_lock);
if (ret)
dev_err_once(fb->dev->dev, "Failed to update display %d\n",
ret);
return ret;
}
static const struct drm_framebuffer_funcs ili9225_fb_funcs = {
.destroy = drm_gem_fb_destroy,
.create_handle = drm_gem_fb_create_handle,
.dirty = ili9225_fb_dirty,
.dirty = tinydrm_fb_dirty,
};
static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe,
@ -269,7 +256,7 @@ static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe,
ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x1017);
mipi_dbi_enable_flush(mipi);
mipi_dbi_enable_flush(mipi, crtc_state, plane_state);
}
static void ili9225_pipe_disable(struct drm_simple_display_pipe *pipe)
@ -342,6 +329,8 @@ static int ili9225_init(struct device *dev, struct mipi_dbi *mipi,
if (ret)
return ret;
tdev->fb_dirty = ili9225_fb_dirty;
ret = tinydrm_display_pipe_init(tdev, pipe_funcs,
DRM_MODE_CONNECTOR_VIRTUAL,
ili9225_formats,

2
drivers/gpu/drm/tinydrm/mi0283qt.c
View File

@ -127,7 +127,7 @@ static void mi0283qt_enable(struct drm_simple_display_pipe *pipe,
msleep(100);
out_enable:
mipi_dbi_enable_flush(mipi);
mipi_dbi_enable_flush(mipi, crtc_state, plane_state);
}
static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = {

30
drivers/gpu/drm/tinydrm/mipi-dbi.c
View File

@ -219,14 +219,8 @@ static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb,
bool full;
void *tr;
mutex_lock(&tdev->dirty_lock);
if (!mipi->enabled)
goto out_unlock;
/* fbdev can flush even when we're not interested */
if (tdev->pipe.plane.fb != fb)
goto out_unlock;
return 0;
full = tinydrm_merge_clips(&clip, clips, num_clips, flags,
fb->width, fb->height);
@ -239,7 +233,7 @@ static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb,
tr = mipi->tx_buf;
ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, &clip, swap);
if (ret)
goto out_unlock;
return ret;
} else {
tr = cma_obj->vaddr;
}
@ -254,20 +248,13 @@ static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb,
ret = mipi_dbi_command_buf(mipi, MIPI_DCS_WRITE_MEMORY_START, tr,
(clip.x2 - clip.x1) * (clip.y2 - clip.y1) * 2);
out_unlock:
mutex_unlock(&tdev->dirty_lock);
if (ret)
dev_err_once(fb->dev->dev, "Failed to update display %d\n",
ret);
return ret;
}
static const struct drm_framebuffer_funcs mipi_dbi_fb_funcs = {
.destroy = drm_gem_fb_destroy,
.create_handle = drm_gem_fb_create_handle,
.dirty = mipi_dbi_fb_dirty,
.dirty = tinydrm_fb_dirty,
};
/**
@ -278,13 +265,16 @@ static const struct drm_framebuffer_funcs mipi_dbi_fb_funcs = {
* enables the backlight. Drivers can use this in their
* &drm_simple_display_pipe_funcs->enable callback.
*/
void mipi_dbi_enable_flush(struct mipi_dbi *mipi)
void mipi_dbi_enable_flush(struct mipi_dbi *mipi,
struct drm_crtc_state *crtc_state,
struct drm_plane_state *plane_state)
{
struct drm_framebuffer *fb = mipi->tinydrm.pipe.plane.fb;
struct tinydrm_device *tdev = &mipi->tinydrm;
struct drm_framebuffer *fb = plane_state->fb;
mipi->enabled = true;
if (fb)
fb->funcs->dirty(fb, NULL, 0, 0, NULL, 0);
tdev->fb_dirty(fb, NULL, 0, 0, NULL, 0);
backlight_enable(mipi->backlight);
}
@ -381,6 +371,8 @@ int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
if (ret)
return ret;
tdev->fb_dirty = mipi_dbi_fb_dirty;
/* TODO: Maybe add DRM_MODE_CONNECTOR_SPI */
ret = tinydrm_display_pipe_init(tdev, pipe_funcs,
DRM_MODE_CONNECTOR_VIRTUAL,

28
drivers/gpu/drm/tinydrm/repaper.c
View File

@ -540,14 +540,8 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb,
clip.y1 = 0;
clip.y2 = fb->height;
mutex_lock(&tdev->dirty_lock);
if (!epd->enabled)
goto out_unlock;
/* fbdev can flush even when we're not interested */
if (tdev->pipe.plane.fb != fb)
goto out_unlock;
return 0;
repaper_get_temperature(epd);
@ -555,16 +549,14 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb,
epd->factored_stage_time);
buf = kmalloc(fb->width * fb->height, GFP_KERNEL);
if (!buf) {
ret = -ENOMEM;
goto out_unlock;
}
if (!buf)
return -ENOMEM;
if (import_attach) {
ret = dma_buf_begin_cpu_access(import_attach->dmabuf,
DMA_FROM_DEVICE);
if (ret)
goto out_unlock;
goto out_free;
}
tinydrm_xrgb8888_to_gray8(buf, cma_obj->vaddr, fb, &clip);
@ -573,7 +565,7 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb,
ret = dma_buf_end_cpu_access(import_attach->dmabuf,
DMA_FROM_DEVICE);
if (ret)
goto out_unlock;
goto out_free;
}
repaper_gray8_to_mono_reversed(buf, fb->width, fb->height);
@ -625,11 +617,7 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb,
}
}
out_unlock:
mutex_unlock(&tdev->dirty_lock);
if (ret)
DRM_DEV_ERROR(fb->dev->dev, "Failed to update display (%d)\n", ret);
out_free:
kfree(buf);
return ret;
@ -638,7 +626,7 @@ out_unlock:
static const struct drm_framebuffer_funcs repaper_fb_funcs = {
.destroy = drm_gem_fb_destroy,
.create_handle = drm_gem_fb_create_handle,
.dirty = repaper_fb_dirty,
.dirty = tinydrm_fb_dirty,
};
static void power_off(struct repaper_epd *epd)
@ -1070,6 +1058,8 @@ static int repaper_probe(struct spi_device *spi)
if (ret)
return ret;
tdev->fb_dirty = repaper_fb_dirty;
ret = tinydrm_display_pipe_init(tdev, &repaper_pipe_funcs,
DRM_MODE_CONNECTOR_VIRTUAL,
repaper_formats,

23
drivers/gpu/drm/tinydrm/st7586.c
View File

@ -120,14 +120,8 @@ static int st7586_fb_dirty(struct drm_framebuffer *fb,
int start, end;
int ret = 0;
mutex_lock(&tdev->dirty_lock);
if (!mipi->enabled)
goto out_unlock;
/* fbdev can flush even when we're not interested */
if (tdev->pipe.plane.fb != fb)
goto out_unlock;
return 0;
tinydrm_merge_clips(&clip, clips, num_clips, flags, fb->width,
fb->height);
@ -141,7 +135,7 @@ static int st7586_fb_dirty(struct drm_framebuffer *fb,
ret = st7586_buf_copy(mipi->tx_buf, fb, &clip);
if (ret)
goto out_unlock;
return ret;
/* Pixels are packed 3 per byte */
start = clip.x1 / 3;
@ -158,20 +152,13 @@ static int st7586_fb_dirty(struct drm_framebuffer *fb,
(u8 *)mipi->tx_buf,
(end - start) * (clip.y2 - clip.y1));
out_unlock:
mutex_unlock(&tdev->dirty_lock);
if (ret)
dev_err_once(fb->dev->dev, "Failed to update display %d\n",
ret);
return ret;
}
static const struct drm_framebuffer_funcs st7586_fb_funcs = {
.destroy = drm_gem_fb_destroy,
.create_handle = drm_gem_fb_create_handle,
.dirty = st7586_fb_dirty,
.dirty = tinydrm_fb_dirty,
};
static void st7586_pipe_enable(struct drm_simple_display_pipe *pipe,
@ -238,7 +225,7 @@ static void st7586_pipe_enable(struct drm_simple_display_pipe *pipe,
mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON);
mipi_dbi_enable_flush(mipi);
mipi_dbi_enable_flush(mipi, crtc_state, plane_state);
}
static void st7586_pipe_disable(struct drm_simple_display_pipe *pipe)
@ -278,6 +265,8 @@ static int st7586_init(struct device *dev, struct mipi_dbi *mipi,
if (ret)
return ret;
tdev->fb_dirty = st7586_fb_dirty;
ret = tinydrm_display_pipe_init(tdev, pipe_funcs,
DRM_MODE_CONNECTOR_VIRTUAL,
st7586_formats,

2
drivers/gpu/drm/tinydrm/st7735r.c
View File

@ -99,7 +99,7 @@ static void jd_t18003_t01_pipe_enable(struct drm_simple_display_pipe *pipe,
msleep(20);
mipi_dbi_enable_flush(mipi);
mipi_dbi_enable_flush(mipi, crtc_state, plane_state);
}
static const struct drm_simple_display_pipe_funcs jd_t18003_t01_pipe_funcs = {

4
include/drm/tinydrm/mipi-dbi.h
View File

@ -67,7 +67,9 @@ int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
const struct drm_simple_display_pipe_funcs *pipe_funcs,
struct drm_driver *driver,
const struct drm_display_mode *mode, unsigned int rotation);
void mipi_dbi_enable_flush(struct mipi_dbi *mipi);
void mipi_dbi_enable_flush(struct mipi_dbi *mipi,
struct drm_crtc_state *crtc_state,
struct drm_plane_state *plan_state);
void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe);
void mipi_dbi_hw_reset(struct mipi_dbi *mipi);
bool mipi_dbi_display_is_on(struct mipi_dbi *mipi);

5
include/drm/tinydrm/tinydrm-helpers.h
View File

@ -36,6 +36,11 @@ static inline bool tinydrm_machine_little_endian(void)
bool tinydrm_merge_clips(struct drm_clip_rect *dst,
struct drm_clip_rect *src, unsigned int num_clips,
unsigned int flags, u32 max_width, u32 max_height);
int tinydrm_fb_dirty(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int flags, unsigned int color,
struct drm_clip_rect *clips,
unsigned int num_clips);
void tinydrm_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb,
struct drm_clip_rect *clip);
void tinydrm_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb,

4
include/drm/tinydrm/tinydrm.h
View File

@ -26,6 +26,10 @@ struct tinydrm_device {
struct drm_simple_display_pipe pipe;
struct mutex dirty_lock;
const struct drm_framebuffer_funcs *fb_funcs;
int (*fb_dirty)(struct drm_framebuffer *framebuffer,
struct drm_file *file_priv, unsigned flags,
unsigned color, struct drm_clip_rect *clips,
unsigned num_clips);
};
static inline struct tinydrm_device *