From eb2ed66fe56f30c6ea841ac11681a2f51049b221 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 29 Jan 2015 01:09:24 +0200 Subject: [PATCH 1/4] drm/irq: Don't disable vblank interrupts when already disabled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The .enable_vblank() operation is only called when vblank interrupts are disabled, but no similar check exists when disabling vblank interrupts. This leads to .disable_vblank() being called with vblank interrupts already disabled and the device possibly runtime suspended. As the operation is called with a spinlock held drivers can't runtime resume the device there and thus must avoid touching device registers in that case, requiring vblank refcounting. As the DRM core tracks whether vblank interrupts are enabled just skip the .disable_vblank() call when the interrupts are already disabled. Signed-off-by: Laurent Pinchart Reviewed-by: Michel Dänzer Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_irq.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 75647e7f012b..10574a0c3a55 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -185,8 +185,15 @@ static void vblank_disable_and_save(struct drm_device *dev, int crtc) return; } - dev->driver->disable_vblank(dev, crtc); - vblank->enabled = false; + /* + * Only disable vblank interrupts if they're enabled. This avoids + * calling the ->disable_vblank() operation in atomic context with the + * hardware potentially runtime suspended. + */ + if (vblank->enabled) { + dev->driver->disable_vblank(dev, crtc); + vblank->enabled = false; + } /* No further vblank irq's will be processed after * this point. Get current hardware vblank count and From f79d1548b0fea94f2ccf089e49480da5202918bc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 2 Feb 2015 19:13:57 +0200 Subject: [PATCH 2/4] drm/modes: Print the mode status in human readable form MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently when a mode is rejected the reason is printed as a raw number. Having to manually decode that to a enum drm_mode_status value is tiresome. Have the code do the decoding instead and print the result in a human readable format. Just having an array of strings indexed with the mode status doesn't work since the enum includes negative values. So we offset the status by +3 which makes all the indexes non-negative. Also add a bit of paranoia into the code to catch out of bounds accesses in case someone adds more enum values but forgets to update the code. Signed-off-by: Ville Syrjälä Reviewed-by: Alex Deucher Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_modes.c | 61 +++++++++++++++++++++++++++++++++++-- 1 file changed, 59 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 20d977a52c58..487d0e35c134 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1011,6 +1011,62 @@ drm_mode_validate_size(const struct drm_display_mode *mode, } EXPORT_SYMBOL(drm_mode_validate_size); +#define MODE_STATUS(status) [MODE_ ## status + 3] = #status + +static const char * const drm_mode_status_names[] = { + MODE_STATUS(OK), + MODE_STATUS(HSYNC), + MODE_STATUS(VSYNC), + MODE_STATUS(H_ILLEGAL), + MODE_STATUS(V_ILLEGAL), + MODE_STATUS(BAD_WIDTH), + MODE_STATUS(NOMODE), + MODE_STATUS(NO_INTERLACE), + MODE_STATUS(NO_DBLESCAN), + MODE_STATUS(NO_VSCAN), + MODE_STATUS(MEM), + MODE_STATUS(VIRTUAL_X), + MODE_STATUS(VIRTUAL_Y), + MODE_STATUS(MEM_VIRT), + MODE_STATUS(NOCLOCK), + MODE_STATUS(CLOCK_HIGH), + MODE_STATUS(CLOCK_LOW), + MODE_STATUS(CLOCK_RANGE), + MODE_STATUS(BAD_HVALUE), + MODE_STATUS(BAD_VVALUE), + MODE_STATUS(BAD_VSCAN), + MODE_STATUS(HSYNC_NARROW), + MODE_STATUS(HSYNC_WIDE), + MODE_STATUS(HBLANK_NARROW), + MODE_STATUS(HBLANK_WIDE), + MODE_STATUS(VSYNC_NARROW), + MODE_STATUS(VSYNC_WIDE), + MODE_STATUS(VBLANK_NARROW), + MODE_STATUS(VBLANK_WIDE), + MODE_STATUS(PANEL), + MODE_STATUS(INTERLACE_WIDTH), + MODE_STATUS(ONE_WIDTH), + MODE_STATUS(ONE_HEIGHT), + MODE_STATUS(ONE_SIZE), + MODE_STATUS(NO_REDUCED), + MODE_STATUS(NO_STEREO), + MODE_STATUS(UNVERIFIED), + MODE_STATUS(BAD), + MODE_STATUS(ERROR), +}; + +#undef MODE_STATUS + +static const char *drm_get_mode_status_name(enum drm_mode_status status) +{ + int index = status + 3; + + if (WARN_ON(index < 0 || index >= ARRAY_SIZE(drm_mode_status_names))) + return ""; + + return drm_mode_status_names[index]; +} + /** * drm_mode_prune_invalid - remove invalid modes from mode list * @dev: DRM device @@ -1032,8 +1088,9 @@ void drm_mode_prune_invalid(struct drm_device *dev, list_del(&mode->head); if (verbose) { drm_mode_debug_printmodeline(mode); - DRM_DEBUG_KMS("Not using %s mode %d\n", - mode->name, mode->status); + DRM_DEBUG_KMS("Not using %s mode: %s\n", + mode->name, + drm_get_mode_status_name(mode->status)); } drm_mode_destroy(dev, mode); } From 083500baefd5f4c215a5a93aef2492c1aa775828 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 3 Feb 2015 16:37:45 +0100 Subject: [PATCH 3/4] drm: remove DRM_FORMAT_NV12MT So this has been merged originally in commit 83052d4d5cd518332440bb4ee63d68bb5f744e0f Author: Seung-Woo Kim Date: Thu Dec 15 15:40:55 2011 +0900 drm: Add multi buffer plane pixel formats which hasn't seen a lot of review really. The problem is that it's not a real pixel format, but just a different way to lay out NV12 pixels in macroblocks, i.e. a tiling format. The new way of doing this is with the soon-to-be-merged fb modifiers. This was brough up in some long irc discussion around the entire topic, as an example of where things have gone wrong. Luckily we can correct the mistake: - The kms side support for NV12MT is all dead code because format_check in drm_crtc.c never accepted NV12MT. - The gem side for the gsc support doesn't look better: The code forgets to set the pixel format and makes a big mess with the tiling mode bits, inadvertedly setting them all. Conclusion: This never really worked (at least not in upstream) and hence we can safely correct our mistake here. Cc: Seung-Woo Kim Cc: Inki Dae Cc: Kyungmin Park Cc: Rob Clark Cc: Daniel Stone Cc: Damien Lespiau Reviewed-by: Rob Clark Reviewed-by: Gustavo Padovan Acked-by: Joonyoung Shim Acked-by: Seung-Woo Kim Signed-off-by: Daniel Vetter --- drivers/gpu/drm/exynos/exynos_drm_fimc.c | 14 ++------------ drivers/gpu/drm/exynos/exynos_drm_gsc.c | 6 ------ drivers/gpu/drm/exynos/exynos_drm_plane.c | 1 - drivers/gpu/drm/exynos/exynos_mixer.c | 2 -- include/uapi/drm/drm_fourcc.h | 3 --- 5 files changed, 2 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c index 835b6af00970..842d6b8dc3c4 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c @@ -461,7 +461,6 @@ static int fimc_src_set_fmt_order(struct fimc_context *ctx, u32 fmt) cfg |= EXYNOS_MSCTRL_C_INT_IN_3PLANE; break; case DRM_FORMAT_NV12: - case DRM_FORMAT_NV12MT: case DRM_FORMAT_NV16: cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CBCR | EXYNOS_MSCTRL_C_INT_IN_2PLANE); @@ -511,7 +510,6 @@ static int fimc_src_set_fmt(struct device *dev, u32 fmt) case DRM_FORMAT_YVU420: case DRM_FORMAT_NV12: case DRM_FORMAT_NV21: - case DRM_FORMAT_NV12MT: cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420; break; default: @@ -524,10 +522,7 @@ static int fimc_src_set_fmt(struct device *dev, u32 fmt) cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM); cfg &= ~EXYNOS_CIDMAPARAM_R_MODE_MASK; - if (fmt == DRM_FORMAT_NV12MT) - cfg |= EXYNOS_CIDMAPARAM_R_MODE_64X32; - else - cfg |= EXYNOS_CIDMAPARAM_R_MODE_LINEAR; + cfg |= EXYNOS_CIDMAPARAM_R_MODE_LINEAR; fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM); @@ -812,7 +807,6 @@ static int fimc_dst_set_fmt_order(struct fimc_context *ctx, u32 fmt) cfg |= EXYNOS_CIOCTRL_YCBCR_3PLANE; break; case DRM_FORMAT_NV12: - case DRM_FORMAT_NV12MT: case DRM_FORMAT_NV16: cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CBCR; cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE; @@ -867,7 +861,6 @@ static int fimc_dst_set_fmt(struct device *dev, u32 fmt) case DRM_FORMAT_YUV420: case DRM_FORMAT_YVU420: case DRM_FORMAT_NV12: - case DRM_FORMAT_NV12MT: case DRM_FORMAT_NV21: cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR420; break; @@ -883,10 +876,7 @@ static int fimc_dst_set_fmt(struct device *dev, u32 fmt) cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM); cfg &= ~EXYNOS_CIDMAPARAM_W_MODE_MASK; - if (fmt == DRM_FORMAT_NV12MT) - cfg |= EXYNOS_CIDMAPARAM_W_MODE_64X32; - else - cfg |= EXYNOS_CIDMAPARAM_W_MODE_LINEAR; + cfg |= EXYNOS_CIDMAPARAM_W_MODE_LINEAR; fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM); diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c index 0261468c8019..8040ed2a831f 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c @@ -542,9 +542,6 @@ static int gsc_src_set_fmt(struct device *dev, u32 fmt) cfg |= (GSC_IN_CHROMA_ORDER_CBCR | GSC_IN_YUV420_2P); break; - case DRM_FORMAT_NV12MT: - cfg |= (GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE); - break; default: dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt); return -EINVAL; @@ -809,9 +806,6 @@ static int gsc_dst_set_fmt(struct device *dev, u32 fmt) cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | GSC_OUT_YUV420_2P); break; - case DRM_FORMAT_NV12MT: - cfg |= (GSC_OUT_TILE_C_16x8 | GSC_OUT_TILE_MODE); - break; default: dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt); return -EINVAL; diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c index c7045a663763..92d75a4eabd7 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_plane.c +++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c @@ -30,7 +30,6 @@ static const uint32_t formats[] = { DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_NV12, - DRM_FORMAT_NV12MT, }; /* diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index 820b76234ef4..5da28443342d 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -417,8 +417,6 @@ static void vp_video_buffer(struct mixer_context *ctx, int win) win_data = &ctx->win_data[win]; switch (win_data->pixel_format) { - case DRM_FORMAT_NV12MT: - tiled_mode = true; case DRM_FORMAT_NV12: crcb_mode = false; buf_num = 2; diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 646ae5f39f42..a284f11a8ef5 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -109,9 +109,6 @@ #define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */ #define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */ -/* special NV12 tiled format */ -#define DRM_FORMAT_NV12MT fourcc_code('T', 'M', '1', '2') /* 2x2 subsampled Cr:Cb plane 64x32 macroblocks */ - /* * 3 plane YCbCr * index 0: Y plane, [7:0] Y From 335f1a62c5a6334c4fc92c3c448d7648408d9b83 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 4 Feb 2015 11:58:53 +0100 Subject: [PATCH 4/4] drm: Use static attribute groups for managing connector sysfs entries Instead of manual calls of device_create_file() and device_remove_file(), assign the static attribute groups to the device with device_create_with_groups(). The conditionally built sysfs entries are handled via is_visible callback. This simplifies the code and also avoids the possible races. Signed-off-by: Takashi Iwai Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_sysfs.c | 132 ++++++++++++++++++------------------ 1 file changed, 67 insertions(+), 65 deletions(-) diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index cc3d6d6d67e0..5c99d3773212 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -339,19 +339,51 @@ static ssize_t select_subconnector_show(struct device *device, drm_get_dvi_i_select_name((int)subconnector)); } -static struct device_attribute connector_attrs[] = { - __ATTR_RO(status), - __ATTR_RO(enabled), - __ATTR_RO(dpms), - __ATTR_RO(modes), +static DEVICE_ATTR_RO(status); +static DEVICE_ATTR_RO(enabled); +static DEVICE_ATTR_RO(dpms); +static DEVICE_ATTR_RO(modes); + +static struct attribute *connector_dev_attrs[] = { + &dev_attr_status.attr, + &dev_attr_enabled.attr, + &dev_attr_dpms.attr, + &dev_attr_modes.attr, + NULL }; /* These attributes are for both DVI-I connectors and all types of tv-out. */ -static struct device_attribute connector_attrs_opt1[] = { - __ATTR_RO(subconnector), - __ATTR_RO(select_subconnector), +static DEVICE_ATTR_RO(subconnector); +static DEVICE_ATTR_RO(select_subconnector); + +static struct attribute *connector_opt_dev_attrs[] = { + &dev_attr_subconnector.attr, + &dev_attr_select_subconnector.attr, + NULL }; +static umode_t connector_opt_dev_is_visible(struct kobject *kobj, + struct attribute *attr, int idx) +{ + struct device *dev = kobj_to_dev(kobj); + struct drm_connector *connector = to_drm_connector(dev); + + /* + * In the long run it maybe a good idea to make one set of + * optionals per connector type. + */ + switch (connector->connector_type) { + case DRM_MODE_CONNECTOR_DVII: + case DRM_MODE_CONNECTOR_Composite: + case DRM_MODE_CONNECTOR_SVIDEO: + case DRM_MODE_CONNECTOR_Component: + case DRM_MODE_CONNECTOR_TV: + return attr->mode; + } + + return 0; +} + static struct bin_attribute edid_attr = { .attr.name = "edid", .attr.mode = 0444, @@ -359,6 +391,27 @@ static struct bin_attribute edid_attr = { .read = edid_show, }; +static struct bin_attribute *connector_bin_attrs[] = { + &edid_attr, + NULL +}; + +static const struct attribute_group connector_dev_group = { + .attrs = connector_dev_attrs, + .bin_attrs = connector_bin_attrs, +}; + +static const struct attribute_group connector_opt_dev_group = { + .attrs = connector_opt_dev_attrs, + .is_visible = connector_opt_dev_is_visible, +}; + +static const struct attribute_group *connector_dev_groups[] = { + &connector_dev_group, + &connector_opt_dev_group, + NULL +}; + /** * drm_sysfs_connector_add - add a connector to sysfs * @connector: connector to add @@ -371,73 +424,27 @@ static struct bin_attribute edid_attr = { int drm_sysfs_connector_add(struct drm_connector *connector) { struct drm_device *dev = connector->dev; - int attr_cnt = 0; - int opt_cnt = 0; - int i; - int ret; if (connector->kdev) return 0; - connector->kdev = device_create(drm_class, dev->primary->kdev, - 0, connector, "card%d-%s", - dev->primary->index, connector->name); + connector->kdev = + device_create_with_groups(drm_class, dev->primary->kdev, 0, + connector, connector_dev_groups, + "card%d-%s", dev->primary->index, + connector->name); DRM_DEBUG("adding \"%s\" to sysfs\n", connector->name); if (IS_ERR(connector->kdev)) { DRM_ERROR("failed to register connector device: %ld\n", PTR_ERR(connector->kdev)); - ret = PTR_ERR(connector->kdev); - goto out; + return PTR_ERR(connector->kdev); } - /* Standard attributes */ - - for (attr_cnt = 0; attr_cnt < ARRAY_SIZE(connector_attrs); attr_cnt++) { - ret = device_create_file(connector->kdev, &connector_attrs[attr_cnt]); - if (ret) - goto err_out_files; - } - - /* Optional attributes */ - /* - * In the long run it maybe a good idea to make one set of - * optionals per connector type. - */ - switch (connector->connector_type) { - case DRM_MODE_CONNECTOR_DVII: - case DRM_MODE_CONNECTOR_Composite: - case DRM_MODE_CONNECTOR_SVIDEO: - case DRM_MODE_CONNECTOR_Component: - case DRM_MODE_CONNECTOR_TV: - for (opt_cnt = 0; opt_cnt < ARRAY_SIZE(connector_attrs_opt1); opt_cnt++) { - ret = device_create_file(connector->kdev, &connector_attrs_opt1[opt_cnt]); - if (ret) - goto err_out_files; - } - break; - default: - break; - } - - ret = sysfs_create_bin_file(&connector->kdev->kobj, &edid_attr); - if (ret) - goto err_out_files; - /* Let userspace know we have a new connector */ drm_sysfs_hotplug_event(dev); return 0; - -err_out_files: - for (i = 0; i < opt_cnt; i++) - device_remove_file(connector->kdev, &connector_attrs_opt1[i]); - for (i = 0; i < attr_cnt; i++) - device_remove_file(connector->kdev, &connector_attrs[i]); - device_unregister(connector->kdev); - -out: - return ret; } /** @@ -455,16 +462,11 @@ int drm_sysfs_connector_add(struct drm_connector *connector) */ void drm_sysfs_connector_remove(struct drm_connector *connector) { - int i; - if (!connector->kdev) return; DRM_DEBUG("removing \"%s\" from sysfs\n", connector->name); - for (i = 0; i < ARRAY_SIZE(connector_attrs); i++) - device_remove_file(connector->kdev, &connector_attrs[i]); - sysfs_remove_bin_file(&connector->kdev->kobj, &edid_attr); device_unregister(connector->kdev); connector->kdev = NULL; }