| Message ID | 20201208135759.451772-3-tomi.valkeinen@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm: fix and cleanup legacy gamma support | expand |
Hi Tomi, Thank you for the patch. On Tue, Dec 08, 2020 at 03:57:59PM +0200, Tomi Valkeinen wrote: > To support legacy gamma ioctls the drivers need to set > drm_crtc_funcs.gamma_set either to a custom implementation or to > drm_atomic_helper_legacy_gamma_set. Most of the atomic drivers do the > latter. > > We can simplify this by making the core handle it automatically. > > Add two functions: drm_crtc_supports_legacy_gamma() which tells if the > legacy gamma table can be set, and drm_crtc_legacy_gamma_set() which > does the work by either calling the drm_crtc_funcs.gamma_set or using > GAMMA_LUT or DEGAMMA_LUT. > > We can then drop drm_atomic_helper_legacy_gamma_set() and remove all its > uses. > > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> > --- > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 - > .../gpu/drm/arm/display/komeda/komeda_crtc.c | 1 - > drivers/gpu/drm/arm/malidp_crtc.c | 1 - > drivers/gpu/drm/armada/armada_crtc.c | 1 - > drivers/gpu/drm/ast/ast_mode.c | 1 - > .../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 1 - > drivers/gpu/drm/drm_atomic_helper.c | 79 ------------ > drivers/gpu/drm/drm_color_mgmt.c | 118 ++++++++++++++++-- > drivers/gpu/drm/drm_crtc_internal.h | 6 + > drivers/gpu/drm/drm_fb_helper.c | 13 +- > drivers/gpu/drm/i915/display/intel_display.c | 1 - > drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 2 - > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 1 - > drivers/gpu/drm/nouveau/dispnv50/head.c | 2 - > drivers/gpu/drm/omapdrm/omap_crtc.c | 1 - > drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 1 - > drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 1 - > drivers/gpu/drm/stm/ltdc.c | 1 - > drivers/gpu/drm/vc4/vc4_crtc.c | 1 - > drivers/gpu/drm/vc4/vc4_txp.c | 1 - > include/drm/drm_atomic_helper.h | 4 - > 21 files changed, 122 insertions(+), 116 deletions(-) > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c > index 2855bb918535..848b06c51b0e 100644 > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c > @@ -5396,7 +5396,6 @@ static void dm_disable_vblank(struct drm_crtc *crtc) > static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = { > .reset = dm_crtc_reset_state, > .destroy = amdgpu_dm_crtc_destroy, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .set_config = drm_atomic_helper_set_config, > .page_flip = drm_atomic_helper_page_flip, > .atomic_duplicate_state = dm_crtc_duplicate_state, > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c > index 4b485eb512e2..59172acb9738 100644 > --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c > @@ -550,7 +550,6 @@ static void komeda_crtc_vblank_disable(struct drm_crtc *crtc) > } > > static const struct drm_crtc_funcs komeda_crtc_funcs = { > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .destroy = drm_crtc_cleanup, > .set_config = drm_atomic_helper_set_config, > .page_flip = drm_atomic_helper_page_flip, > diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c > index 108e7a31bd26..494075ddbef6 100644 > --- a/drivers/gpu/drm/arm/malidp_crtc.c > +++ b/drivers/gpu/drm/arm/malidp_crtc.c > @@ -510,7 +510,6 @@ static void malidp_crtc_disable_vblank(struct drm_crtc *crtc) > } > > static const struct drm_crtc_funcs malidp_crtc_funcs = { > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .destroy = drm_crtc_cleanup, > .set_config = drm_atomic_helper_set_config, > .page_flip = drm_atomic_helper_page_flip, > diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c > index 3ebcf5a52c8b..b7bb90ae787f 100644 > --- a/drivers/gpu/drm/armada/armada_crtc.c > +++ b/drivers/gpu/drm/armada/armada_crtc.c > @@ -820,7 +820,6 @@ static const struct drm_crtc_funcs armada_crtc_funcs = { > .cursor_set = armada_drm_crtc_cursor_set, > .cursor_move = armada_drm_crtc_cursor_move, > .destroy = armada_drm_crtc_destroy, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .set_config = drm_atomic_helper_set_config, > .page_flip = drm_atomic_helper_page_flip, > .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, > diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c > index 9db371f4054f..5b0ec785c516 100644 > --- a/drivers/gpu/drm/ast/ast_mode.c > +++ b/drivers/gpu/drm/ast/ast_mode.c > @@ -903,7 +903,6 @@ static void ast_crtc_atomic_destroy_state(struct drm_crtc *crtc, > > static const struct drm_crtc_funcs ast_crtc_funcs = { > .reset = ast_crtc_reset, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .destroy = drm_crtc_cleanup, > .set_config = drm_atomic_helper_set_config, > .page_flip = drm_atomic_helper_page_flip, > diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c > index c58fa00b4848..05ad75d155e8 100644 > --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c > +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c > @@ -473,7 +473,6 @@ static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = { > .atomic_destroy_state = atmel_hlcdc_crtc_destroy_state, > .enable_vblank = atmel_hlcdc_crtc_enable_vblank, > .disable_vblank = atmel_hlcdc_crtc_disable_vblank, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > }; > > int atmel_hlcdc_crtc_create(struct drm_device *dev) > diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c > index 117b186fe646..b114658100b3 100644 > --- a/drivers/gpu/drm/drm_atomic_helper.c > +++ b/drivers/gpu/drm/drm_atomic_helper.c > @@ -3499,85 +3499,6 @@ int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, > } > EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); > > -/** > - * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table > - * @crtc: CRTC object > - * @red: red correction table > - * @green: green correction table > - * @blue: green correction table > - * @size: size of the tables > - * @ctx: lock acquire context > - * > - * Implements support for legacy gamma correction table for drivers > - * that support color management through the DEGAMMA_LUT/GAMMA_LUT > - * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for > - * how the atomic color management and gamma tables work. > - * > - * This function uses the GAMMA_LUT or DEGAMMA_LUT property for the gamma table. > - * GAMMA_LUT property is used if it exists, and DEGAMMA_LUT property is used as > - * a fallback. > - */ > -int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, > - u16 *red, u16 *green, u16 *blue, > - uint32_t size, > - struct drm_modeset_acquire_ctx *ctx) > -{ > - struct drm_device *dev = crtc->dev; > - struct drm_atomic_state *state; > - struct drm_crtc_state *crtc_state; > - struct drm_property_blob *blob = NULL; > - struct drm_color_lut *blob_data; > - int i, ret = 0; > - bool replaced; > - > - if (!crtc->has_gamma_prop && !crtc->has_degamma_prop) > - return -ENODEV; > - > - state = drm_atomic_state_alloc(crtc->dev); > - if (!state) > - return -ENOMEM; > - > - blob = drm_property_create_blob(dev, > - sizeof(struct drm_color_lut) * size, > - NULL); > - if (IS_ERR(blob)) { > - ret = PTR_ERR(blob); > - blob = NULL; > - goto fail; > - } > - > - /* Prepare GAMMA_LUT with the legacy values. */ > - blob_data = blob->data; > - for (i = 0; i < size; i++) { > - blob_data[i].red = red[i]; > - blob_data[i].green = green[i]; > - blob_data[i].blue = blue[i]; > - } > - > - state->acquire_ctx = ctx; > - crtc_state = drm_atomic_get_crtc_state(state, crtc); > - if (IS_ERR(crtc_state)) { > - ret = PTR_ERR(crtc_state); > - goto fail; > - } > - > - /* Set GAMMA/DEGAMMA_LUT and reset DEGAMMA/GAMMA_LUT and CTM */ > - replaced = drm_property_replace_blob(&crtc_state->degamma_lut, > - crtc->has_gamma_prop ? NULL : blob); > - replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); > - replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, > - crtc->has_gamma_prop ? blob : NULL); > - crtc_state->color_mgmt_changed |= replaced; > - > - ret = drm_atomic_commit(state); > - > -fail: > - drm_atomic_state_put(state); > - drm_property_blob_put(blob); > - return ret; > -} > -EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); > - > /** > * drm_atomic_helper_bridge_propagate_bus_fmt() - Propagate output format to > * the input end of a bridge > diff --git a/drivers/gpu/drm/drm_color_mgmt.c b/drivers/gpu/drm/drm_color_mgmt.c > index 956e59d5f6a7..78b3a9325f7a 100644 > --- a/drivers/gpu/drm/drm_color_mgmt.c > +++ b/drivers/gpu/drm/drm_color_mgmt.c > @@ -22,6 +22,7 @@ > > #include <linux/uaccess.h> > > +#include <drm/drm_atomic.h> > #include <drm/drm_color_mgmt.h> > #include <drm/drm_crtc.h> > #include <drm/drm_device.h> > @@ -89,9 +90,8 @@ > * modes) appropriately. > * > * There is also support for a legacy gamma table, which is set up by calling > - * drm_mode_crtc_set_gamma_size(). Drivers which support both should use > - * drm_atomic_helper_legacy_gamma_set() to alias the legacy gamma ramp with the > - * "GAMMA_LUT" property above. > + * drm_mode_crtc_set_gamma_size(). The DRM core will then alias the legacy gamma > + * ramp with "GAMMA_LUT", or if that is unavailable "DEGAMMA_LUT". > * > * Support for different non RGB color encodings is controlled through > * &drm_plane specific COLOR_ENCODING and COLOR_RANGE properties. They > @@ -156,9 +156,6 @@ EXPORT_SYMBOL(drm_color_ctm_s31_32_to_qm_n); > * optional. The gamma and degamma properties are only attached if > * their size is not 0 and ctm_property is only attached if has_ctm is > * true. > - * > - * Drivers should use drm_atomic_helper_legacy_gamma_set() to implement the > - * legacy &drm_crtc_funcs.gamma_set callback. > */ > void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, > uint degamma_lut_size, > @@ -235,6 +232,109 @@ int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, > } > EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); > > +/** > + * drm_crtc_supports_legacy_gamma - does the crtc support legacy gamma correction table > + * @crtc: CRTC object > + * > + * Returns true/false if the given crtc supports setting the legacy gamma > + * correction table. > + */ > +bool drm_crtc_supports_legacy_gamma(struct drm_crtc *crtc) > +{ > + if (!crtc->gamma_size) > + return false; > + > + if (crtc->funcs->gamma_set) > + return true; > + > + return crtc->has_gamma_prop || crtc->has_degamma_prop; > +} > +EXPORT_SYMBOL(drm_crtc_supports_legacy_gamma); > + > +/** > + * drm_crtc_legacy_gamma_set - set the legacy gamma correction table > + * @crtc: CRTC object > + * @red: red correction table > + * @green: green correction table > + * @blue: green correction table > + * @size: size of the tables > + * @ctx: lock acquire context > + * > + * Implements support for legacy gamma correction table for drivers > + * that have set drm_crtc_funcs.gamma_set or that support color management > + * through the DEGAMMA_LUT/GAMMA_LUT properties. See > + * drm_crtc_enable_color_mgmt() and the containing chapter for > + * how the atomic color management and gamma tables work. > + * > + * This function sets the gamma using the first one available: > + * - drm_crtc_funcs.gamma_set() > + * - GAMMA_LUT > + * - DEGAMMA_LUT > + */ > +int drm_crtc_legacy_gamma_set(struct drm_crtc *crtc, > + u16 *red, u16 *green, u16 *blue, > + uint32_t size, > + struct drm_modeset_acquire_ctx *ctx) > +{ > + struct drm_device *dev = crtc->dev; > + struct drm_atomic_state *state; > + struct drm_crtc_state *crtc_state; > + struct drm_property_blob *blob = NULL; No need to assign NULL to this variable. > + struct drm_color_lut *blob_data; > + int i, ret = 0; > + bool replaced; > + > + if (crtc->funcs->gamma_set) > + return crtc->funcs->gamma_set(crtc, red, green, blue, size, ctx); > + > + if (!crtc->has_gamma_prop && !crtc->has_degamma_prop) > + return -ENODEV; > + > + state = drm_atomic_state_alloc(crtc->dev); > + if (!state) > + return -ENOMEM; > + > + blob = drm_property_create_blob(dev, > + sizeof(struct drm_color_lut) * size, > + NULL); > + if (IS_ERR(blob)) { > + ret = PTR_ERR(blob); > + blob = NULL; > + goto fail; > + } > + > + /* Prepare GAMMA_LUT with the legacy values. */ > + blob_data = blob->data; > + for (i = 0; i < size; i++) { > + blob_data[i].red = red[i]; > + blob_data[i].green = green[i]; > + blob_data[i].blue = blue[i]; > + } > + > + state->acquire_ctx = ctx; > + crtc_state = drm_atomic_get_crtc_state(state, crtc); > + if (IS_ERR(crtc_state)) { > + ret = PTR_ERR(crtc_state); > + goto fail; > + } > + > + /* Set GAMMA/DEGAMMA_LUT and reset DEGAMMA/GAMMA_LUT and CTM */ > + replaced = drm_property_replace_blob(&crtc_state->degamma_lut, > + crtc->has_gamma_prop ? NULL : blob); > + replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); > + replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, > + crtc->has_gamma_prop ? blob : NULL); > + crtc_state->color_mgmt_changed |= replaced; > + > + ret = drm_atomic_commit(state); > + > +fail: > + drm_atomic_state_put(state); > + drm_property_blob_put(blob); > + return ret; > +} > +EXPORT_SYMBOL(drm_crtc_legacy_gamma_set); > + > /** > * drm_mode_gamma_set_ioctl - set the gamma table > * @dev: DRM device > @@ -266,7 +366,7 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev, > if (!crtc) > return -ENOENT; > > - if (crtc->funcs->gamma_set == NULL) > + if (!drm_crtc_supports_legacy_gamma(crtc)) > return -ENOSYS; > > /* memcpy into gamma store */ > @@ -294,8 +394,8 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev, > goto out; > } > > - ret = crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, > - crtc->gamma_size, &ctx); > + ret = drm_crtc_legacy_gamma_set(crtc, r_base, g_base, b_base, > + crtc->gamma_size, &ctx); > > out: > DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); > diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h > index 54d4cf1233e9..dd1cca024b16 100644 > --- a/drivers/gpu/drm/drm_crtc_internal.h > +++ b/drivers/gpu/drm/drm_crtc_internal.h > @@ -114,6 +114,12 @@ int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, > const char *drm_get_color_encoding_name(enum drm_color_encoding encoding); > const char *drm_get_color_range_name(enum drm_color_range range); > > +bool drm_crtc_supports_legacy_gamma(struct drm_crtc *crtc); > +int drm_crtc_legacy_gamma_set(struct drm_crtc *crtc, > + u16 *red, u16 *green, u16 *blue, > + uint32_t size, > + struct drm_modeset_acquire_ctx *ctx); > + > /* IOCTLs */ > int drm_mode_gamma_get_ioctl(struct drm_device *dev, > void *data, struct drm_file *file_priv); > diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c > index b0906ef97617..0fb29b1a1f98 100644 > --- a/drivers/gpu/drm/drm_fb_helper.c > +++ b/drivers/gpu/drm/drm_fb_helper.c > @@ -46,6 +46,7 @@ > #include <drm/drm_print.h> > #include <drm/drm_vblank.h> > > +#include "drm_crtc_internal.h" > #include "drm_crtc_helper_internal.h" i goes after h. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > #include "drm_internal.h" > > @@ -136,15 +137,15 @@ static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) > { > uint16_t *r_base, *g_base, *b_base; > > - if (crtc->funcs->gamma_set == NULL) > + if (!drm_crtc_supports_legacy_gamma(crtc)) > return; > > r_base = crtc->gamma_store; > g_base = r_base + crtc->gamma_size; > b_base = g_base + crtc->gamma_size; > > - crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, > - crtc->gamma_size, NULL); > + drm_crtc_legacy_gamma_set(crtc, r_base, g_base, b_base, > + crtc->gamma_size, NULL); > } > > /** > @@ -907,7 +908,7 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info) > drm_modeset_lock_all(fb_helper->dev); > drm_client_for_each_modeset(modeset, &fb_helper->client) { > crtc = modeset->crtc; > - if (!crtc->funcs->gamma_set || !crtc->gamma_size) > + if (!drm_crtc_supports_legacy_gamma(crtc)) > return -EINVAL; > > if (cmap->start + cmap->len > crtc->gamma_size) > @@ -921,8 +922,8 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info) > memcpy(g + cmap->start, cmap->green, cmap->len * sizeof(*g)); > memcpy(b + cmap->start, cmap->blue, cmap->len * sizeof(*b)); > > - ret = crtc->funcs->gamma_set(crtc, r, g, b, > - crtc->gamma_size, NULL); > + ret = drm_crtc_legacy_gamma_set(crtc, r, g, b, crtc->gamma_size, > + NULL); > if (ret) > return ret; > } > diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c > index cddbda5303ff..1e90b8c3b1c7 100644 > --- a/drivers/gpu/drm/i915/display/intel_display.c > +++ b/drivers/gpu/drm/i915/display/intel_display.c > @@ -16879,7 +16879,6 @@ intel_cursor_plane_create(struct drm_i915_private *dev_priv, > } > > #define INTEL_CRTC_FUNCS \ > - .gamma_set = drm_atomic_helper_legacy_gamma_set, \ > .set_config = drm_atomic_helper_set_config, \ > .destroy = intel_crtc_destroy, \ > .page_flip = drm_atomic_helper_page_flip, \ > diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c > index 368bfef8b340..75f948d41b0a 100644 > --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c > +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c > @@ -755,8 +755,6 @@ static const struct drm_crtc_funcs ingenic_drm_crtc_funcs = { > > .enable_vblank = ingenic_drm_enable_vblank, > .disable_vblank = ingenic_drm_disable_vblank, > - > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > }; > > static const struct drm_plane_helper_funcs ingenic_drm_plane_helper_funcs = { > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > index bfe994230543..b665bd498a4a 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > @@ -619,7 +619,6 @@ static const struct drm_crtc_funcs mtk_crtc_funcs = { > .reset = mtk_drm_crtc_reset, > .atomic_duplicate_state = mtk_drm_crtc_duplicate_state, > .atomic_destroy_state = mtk_drm_crtc_destroy_state, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .enable_vblank = mtk_drm_crtc_enable_vblank, > .disable_vblank = mtk_drm_crtc_disable_vblank, > }; > diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.c b/drivers/gpu/drm/nouveau/dispnv50/head.c > index 537c1ef2e464..ec361d17e900 100644 > --- a/drivers/gpu/drm/nouveau/dispnv50/head.c > +++ b/drivers/gpu/drm/nouveau/dispnv50/head.c > @@ -503,7 +503,6 @@ nv50_head_destroy(struct drm_crtc *crtc) > static const struct drm_crtc_funcs > nv50_head_func = { > .reset = nv50_head_reset, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .destroy = nv50_head_destroy, > .set_config = drm_atomic_helper_set_config, > .page_flip = drm_atomic_helper_page_flip, > @@ -518,7 +517,6 @@ nv50_head_func = { > static const struct drm_crtc_funcs > nvd9_head_func = { > .reset = nv50_head_reset, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .destroy = nv50_head_destroy, > .set_config = drm_atomic_helper_set_config, > .page_flip = drm_atomic_helper_page_flip, > diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c > index 7d66269ad998..b97f21cf4a91 100644 > --- a/drivers/gpu/drm/omapdrm/omap_crtc.c > +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c > @@ -741,7 +741,6 @@ static const struct drm_crtc_funcs omap_crtc_funcs = { > .set_config = drm_atomic_helper_set_config, > .destroy = omap_crtc_destroy, > .page_flip = drm_atomic_helper_page_flip, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .atomic_duplicate_state = omap_crtc_duplicate_state, > .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, > .atomic_set_property = omap_crtc_atomic_set_property, > diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c > index b5fb941e0f53..f93e0750431d 100644 > --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c > +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c > @@ -1144,7 +1144,6 @@ static const struct drm_crtc_funcs crtc_funcs_gen3 = { > .set_crc_source = rcar_du_crtc_set_crc_source, > .verify_crc_source = rcar_du_crtc_verify_crc_source, > .get_crc_sources = rcar_du_crtc_get_crc_sources, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > }; > > /* ----------------------------------------------------------------------------- > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > index d1e05482641b..8d15cabdcb02 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > @@ -1643,7 +1643,6 @@ static const struct drm_crtc_funcs vop_crtc_funcs = { > .disable_vblank = vop_crtc_disable_vblank, > .set_crc_source = vop_crtc_set_crc_source, > .verify_crc_source = vop_crtc_verify_crc_source, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > }; > > static void vop_fb_unref_worker(struct drm_flip_work *work, void *val) > diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c > index 3980677435cb..7812094f93d6 100644 > --- a/drivers/gpu/drm/stm/ltdc.c > +++ b/drivers/gpu/drm/stm/ltdc.c > @@ -713,7 +713,6 @@ static const struct drm_crtc_funcs ltdc_crtc_funcs = { > .enable_vblank = ltdc_crtc_enable_vblank, > .disable_vblank = ltdc_crtc_disable_vblank, > .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > }; > > /* > diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c > index ea710beb8e00..7495d70d6a32 100644 > --- a/drivers/gpu/drm/vc4/vc4_crtc.c > +++ b/drivers/gpu/drm/vc4/vc4_crtc.c > @@ -884,7 +884,6 @@ static const struct drm_crtc_funcs vc4_crtc_funcs = { > .reset = vc4_crtc_reset, > .atomic_duplicate_state = vc4_crtc_duplicate_state, > .atomic_destroy_state = vc4_crtc_destroy_state, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .enable_vblank = vc4_enable_vblank, > .disable_vblank = vc4_disable_vblank, > .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, > diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c > index 8aa5220885f4..e4b782e42f69 100644 > --- a/drivers/gpu/drm/vc4/vc4_txp.c > +++ b/drivers/gpu/drm/vc4/vc4_txp.c > @@ -382,7 +382,6 @@ static const struct drm_crtc_funcs vc4_txp_crtc_funcs = { > .reset = vc4_crtc_reset, > .atomic_duplicate_state = vc4_crtc_duplicate_state, > .atomic_destroy_state = vc4_crtc_destroy_state, > - .gamma_set = drm_atomic_helper_legacy_gamma_set, > .enable_vblank = vc4_txp_enable_vblank, > .disable_vblank = vc4_txp_disable_vblank, > }; > diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h > index 5f47720440fa..4045e2507e11 100644 > --- a/include/drm/drm_atomic_helper.h > +++ b/include/drm/drm_atomic_helper.h > @@ -147,10 +147,6 @@ int drm_atomic_helper_page_flip_target( > uint32_t flags, > uint32_t target, > struct drm_modeset_acquire_ctx *ctx); > -int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, > - u16 *red, u16 *green, u16 *blue, > - uint32_t size, > - struct drm_modeset_acquire_ctx *ctx); > > /** > * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC
Hi Tomi,
I love your patch! Perhaps something to improve:
[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on linus/master v5.10-rc7]
[cannot apply to drm-tip/drm-tip anholt/for-next next-20201208]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917
base: git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-randconfig-s021-20201208 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-179-ga00755aa-dirty
# https://github.com/0day-ci/linux/commit/82a704a10c400f58d4b9b44e6def07cc7d6bab20
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917
git checkout 82a704a10c400f58d4b9b44e6def07cc7d6bab20
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from drivers/gpu/drm/drm_ioc32.c:38:
>> drivers/gpu/drm/drm_crtc_internal.h:121:17: warning: 'struct drm_modeset_acquire_ctx' declared inside parameter list will not be visible outside of this definition or declaration
121 | struct drm_modeset_acquire_ctx *ctx);
| ^~~~~~~~~~~~~~~~~~~~~~~
vim +121 drivers/gpu/drm/drm_crtc_internal.h
116
117 bool drm_crtc_supports_legacy_gamma(struct drm_crtc *crtc);
118 int drm_crtc_legacy_gamma_set(struct drm_crtc *crtc,
119 u16 *red, u16 *green, u16 *blue,
120 uint32_t size,
> 121 struct drm_modeset_acquire_ctx *ctx);
122
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
Hi Tomi,
I love your patch! Perhaps something to improve:
[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on linus/master v5.10-rc7]
[cannot apply to drm-tip/drm-tip anholt/for-next next-20201210]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917
base: git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-m021-20201209 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
New smatch warnings:
drivers/gpu/drm/drm_color_mgmt.c:307 drm_crtc_legacy_gamma_set() error: potential null dereference 'blob'. (drm_property_create_blob returns null)
Old smatch warnings:
drivers/gpu/drm/drm_color_mgmt.c:214 drm_mode_crtc_set_gamma_size() warn: double check that we're allocating correct size: 2 vs 6
vim +/blob +307 drivers/gpu/drm/drm_color_mgmt.c
253
254 /**
255 * drm_crtc_legacy_gamma_set - set the legacy gamma correction table
256 * @crtc: CRTC object
257 * @red: red correction table
258 * @green: green correction table
259 * @blue: green correction table
260 * @size: size of the tables
261 * @ctx: lock acquire context
262 *
263 * Implements support for legacy gamma correction table for drivers
264 * that have set drm_crtc_funcs.gamma_set or that support color management
265 * through the DEGAMMA_LUT/GAMMA_LUT properties. See
266 * drm_crtc_enable_color_mgmt() and the containing chapter for
267 * how the atomic color management and gamma tables work.
268 *
269 * This function sets the gamma using the first one available:
270 * - drm_crtc_funcs.gamma_set()
271 * - GAMMA_LUT
272 * - DEGAMMA_LUT
273 */
274 int drm_crtc_legacy_gamma_set(struct drm_crtc *crtc,
275 u16 *red, u16 *green, u16 *blue,
276 uint32_t size,
277 struct drm_modeset_acquire_ctx *ctx)
278 {
279 struct drm_device *dev = crtc->dev;
280 struct drm_atomic_state *state;
281 struct drm_crtc_state *crtc_state;
282 struct drm_property_blob *blob = NULL;
283 struct drm_color_lut *blob_data;
284 int i, ret = 0;
285 bool replaced;
286
287 if (crtc->funcs->gamma_set)
288 return crtc->funcs->gamma_set(crtc, red, green, blue, size, ctx);
289
290 if (!crtc->has_gamma_prop && !crtc->has_degamma_prop)
291 return -ENODEV;
292
293 state = drm_atomic_state_alloc(crtc->dev);
294 if (!state)
295 return -ENOMEM;
296
297 blob = drm_property_create_blob(dev,
298 sizeof(struct drm_color_lut) * size,
299 NULL);
300 if (IS_ERR(blob)) {
301 ret = PTR_ERR(blob);
302 blob = NULL;
303 goto fail;
304 }
305
306 /* Prepare GAMMA_LUT with the legacy values. */
> 307 blob_data = blob->data;
308 for (i = 0; i < size; i++) {
309 blob_data[i].red = red[i];
310 blob_data[i].green = green[i];
311 blob_data[i].blue = blue[i];
312 }
313
314 state->acquire_ctx = ctx;
315 crtc_state = drm_atomic_get_crtc_state(state, crtc);
316 if (IS_ERR(crtc_state)) {
317 ret = PTR_ERR(crtc_state);
318 goto fail;
319 }
320
321 /* Set GAMMA/DEGAMMA_LUT and reset DEGAMMA/GAMMA_LUT and CTM */
322 replaced = drm_property_replace_blob(&crtc_state->degamma_lut,
323 crtc->has_gamma_prop ? NULL : blob);
324 replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL);
325 replaced |= drm_property_replace_blob(&crtc_state->gamma_lut,
326 crtc->has_gamma_prop ? blob : NULL);
327 crtc_state->color_mgmt_changed |= replaced;
328
329 ret = drm_atomic_commit(state);
330
331 fail:
332 drm_atomic_state_put(state);
333 drm_property_blob_put(blob);
334 return ret;
335 }
336 EXPORT_SYMBOL(drm_crtc_legacy_gamma_set);
337
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
On 10/12/2020 20:06, kernel test robot wrote: > Hi Tomi, > > I love your patch! Perhaps something to improve: > > [auto build test WARNING on drm-intel/for-linux-next] > [also build test WARNING on linus/master v5.10-rc7] > [cannot apply to drm-tip/drm-tip anholt/for-next next-20201210] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch] > > url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917 > base: git://anongit.freedesktop.org/drm-intel for-linux-next > config: i386-randconfig-m021-20201209 (attached as .config) > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > New smatch warnings: > drivers/gpu/drm/drm_color_mgmt.c:307 drm_crtc_legacy_gamma_set() error: potential null dereference 'blob'. (drm_property_create_blob returns null) I don't see how this could happen. There's no code path I see where drm_property_create_blob could return null... Tomi
On Fri, Dec 11, 2020 at 01:24:49PM +0200, Tomi Valkeinen wrote: > On 10/12/2020 20:06, kernel test robot wrote: > > Hi Tomi, > > > > I love your patch! Perhaps something to improve: > > > > [auto build test WARNING on drm-intel/for-linux-next] > > [also build test WARNING on linus/master v5.10-rc7] > > [cannot apply to drm-tip/drm-tip anholt/for-next next-20201210] > > [If your patch is applied to the wrong git tree, kindly drop us a note. > > And when submitting patch, we suggest to use '--base' as documented in > > https://git-scm.com/docs/git-format-patch] > > > > url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917 > > base: git://anongit.freedesktop.org/drm-intel for-linux-next > > config: i386-randconfig-m021-20201209 (attached as .config) > > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > > > > If you fix the issue, kindly add following tag as appropriate > > Reported-by: kernel test robot <lkp@intel.com> > > > > New smatch warnings: > > drivers/gpu/drm/drm_color_mgmt.c:307 drm_crtc_legacy_gamma_set() error: potential null dereference 'blob'. (drm_property_create_blob returns null) > > I don't see how this could happen. There's no code path I see where drm_property_create_blob could > return null... IIRC we've received multiple similar nonsense reports from lkp, but no explanation why it thinks it could ever be null. Hmm, maybe there is a codepath somewhere that has a null check on the return value?
On Fri, Dec 11, 2020 at 04:42:00PM +0200, Ville Syrjälä wrote: > On Fri, Dec 11, 2020 at 01:24:49PM +0200, Tomi Valkeinen wrote: > > On 10/12/2020 20:06, kernel test robot wrote: > > > Hi Tomi, > > > > > > I love your patch! Perhaps something to improve: > > > > > > [auto build test WARNING on drm-intel/for-linux-next] > > > [also build test WARNING on linus/master v5.10-rc7] > > > [cannot apply to drm-tip/drm-tip anholt/for-next next-20201210] > > > [If your patch is applied to the wrong git tree, kindly drop us a note. > > > And when submitting patch, we suggest to use '--base' as documented in > > > https://git-scm.com/docs/git-format-patch] > > > > > > url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917 > > > base: git://anongit.freedesktop.org/drm-intel for-linux-next > > > config: i386-randconfig-m021-20201209 (attached as .config) > > > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > > > > > > If you fix the issue, kindly add following tag as appropriate > > > Reported-by: kernel test robot <lkp@intel.com> > > > > > > New smatch warnings: > > > drivers/gpu/drm/drm_color_mgmt.c:307 drm_crtc_legacy_gamma_set() error: potential null dereference 'blob'. (drm_property_create_blob returns null) > > > > I don't see how this could happen. There's no code path I see where drm_property_create_blob could > > return null... > > IIRC we've received multiple similar nonsense reports from lkp, but > no explanation why it thinks it could ever be null. Hmm, maybe there > is a codepath somewhere that has a null check on the return value? hi Dan, can you help on this to share some idea? The original report is at https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/F3MVBRGF2R4URBNLNY3GMTSDZUCBX6RF/ Thanks > > -- > Ville Syrjälä > Intel > _______________________________________________ > kbuild-all mailing list -- kbuild-all@lists.01.org > To unsubscribe send an email to kbuild-all-leave@lists.01.org
On Sat, Dec 12, 2020 at 04:54:45PM +0800, Philip Li wrote: > On Fri, Dec 11, 2020 at 04:42:00PM +0200, Ville Syrjälä wrote: > > On Fri, Dec 11, 2020 at 01:24:49PM +0200, Tomi Valkeinen wrote: > > > On 10/12/2020 20:06, kernel test robot wrote: > > > > Hi Tomi, > > > > > > > > I love your patch! Perhaps something to improve: > > > > > > > > [auto build test WARNING on drm-intel/for-linux-next] > > > > [also build test WARNING on linus/master v5.10-rc7] > > > > [cannot apply to drm-tip/drm-tip anholt/for-next next-20201210] > > > > [If your patch is applied to the wrong git tree, kindly drop us a note. > > > > And when submitting patch, we suggest to use '--base' as documented in > > > > https://git-scm.com/docs/git-format-patch ] > > > > > > > > url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917 > > > > base: git://anongit.freedesktop.org/drm-intel for-linux-next > > > > config: i386-randconfig-m021-20201209 (attached as .config) > > > > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > > > > > > > > If you fix the issue, kindly add following tag as appropriate > > > > Reported-by: kernel test robot <lkp@intel.com> > > > > > > > > New smatch warnings: > > > > drivers/gpu/drm/drm_color_mgmt.c:307 drm_crtc_legacy_gamma_set() error: potential null dereference 'blob'. (drm_property_create_blob returns null) > > > > > > I don't see how this could happen. There's no code path I see where drm_property_create_blob could > > > return null... > > > > IIRC we've received multiple similar nonsense reports from lkp, but > > no explanation why it thinks it could ever be null. Hmm, maybe there > > is a codepath somewhere that has a null check on the return value? > hi Dan, can you help on this to share some idea? > > The original report is at > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/F3MVBRGF2R4URBNLNY3GMTSDZUCBX6RF/ Thanks, Philip. I've pushed a fix for this. It didn't show up if you had the cross function DB built, so it's not something I would see in my testing. regards, dan carpenter
On Mon, Dec 14, 2020 at 09:49:17PM +0300, Dan Carpenter wrote: > On Sat, Dec 12, 2020 at 04:54:45PM +0800, Philip Li wrote: > > On Fri, Dec 11, 2020 at 04:42:00PM +0200, Ville Syrjälä wrote: > > > On Fri, Dec 11, 2020 at 01:24:49PM +0200, Tomi Valkeinen wrote: > > > > On 10/12/2020 20:06, kernel test robot wrote: > > > > > Hi Tomi, > > > > > > > > > > I love your patch! Perhaps something to improve: > > > > > > > > > > [auto build test WARNING on drm-intel/for-linux-next] > > > > > [also build test WARNING on linus/master v5.10-rc7] > > > > > [cannot apply to drm-tip/drm-tip anholt/for-next next-20201210] > > > > > [If your patch is applied to the wrong git tree, kindly drop us a note. > > > > > And when submitting patch, we suggest to use '--base' as documented in > > > > > https://git-scm.com/docs/git-format-patch ] > > > > > > > > > > url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917 > > > > > base: git://anongit.freedesktop.org/drm-intel for-linux-next > > > > > config: i386-randconfig-m021-20201209 (attached as .config) > > > > > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > > > > > > > > > > If you fix the issue, kindly add following tag as appropriate > > > > > Reported-by: kernel test robot <lkp@intel.com> > > > > > > > > > > New smatch warnings: > > > > > drivers/gpu/drm/drm_color_mgmt.c:307 drm_crtc_legacy_gamma_set() error: potential null dereference 'blob'. (drm_property_create_blob returns null) > > > > > > > > I don't see how this could happen. There's no code path I see where drm_property_create_blob could > > > > return null... > > > > > > IIRC we've received multiple similar nonsense reports from lkp, but > > > no explanation why it thinks it could ever be null. Hmm, maybe there > > > is a codepath somewhere that has a null check on the return value? > > hi Dan, can you help on this to share some idea? > > > > The original report is at > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/F3MVBRGF2R4URBNLNY3GMTSDZUCBX6RF/ > > Thanks, Philip. I've pushed a fix for this. Thanks Dan for this, we will pack the new code to run in the robot. > > It didn't show up if you had the cross function DB built, so it's not > something I would see in my testing. Got it, do you recommend this "cross function DB" is necessary for us to setup or not a must? Thanks > > regards, > dan carpenter >
On Wed, Dec 16, 2020 at 09:06:50AM +0800, Philip Li wrote: > On Mon, Dec 14, 2020 at 09:49:17PM +0300, Dan Carpenter wrote: > > On Sat, Dec 12, 2020 at 04:54:45PM +0800, Philip Li wrote: > > > On Fri, Dec 11, 2020 at 04:42:00PM +0200, Ville Syrjälä wrote: > > > > On Fri, Dec 11, 2020 at 01:24:49PM +0200, Tomi Valkeinen wrote: > > > > > On 10/12/2020 20:06, kernel test robot wrote: > > > > > > Hi Tomi, > > > > > > > > > > > > I love your patch! Perhaps something to improve: > > > > > > > > > > > > [auto build test WARNING on drm-intel/for-linux-next] > > > > > > [also build test WARNING on linus/master v5.10-rc7] > > > > > > [cannot apply to drm-tip/drm-tip anholt/for-next next-20201210] > > > > > > [If your patch is applied to the wrong git tree, kindly drop us a note. > > > > > > And when submitting patch, we suggest to use '--base' as documented in > > > > > > https://git-scm.com/docs/git-format-patch ] > > > > > > > > > > > > url: https://github.com/0day-ci/linux/commits/Tomi-Valkeinen/drm-fix-and-cleanup-legacy-gamma-support/20201208-215917 > > > > > > base: git://anongit.freedesktop.org/drm-intel for-linux-next > > > > > > config: i386-randconfig-m021-20201209 (attached as .config) > > > > > > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > > > > > > > > > > > > If you fix the issue, kindly add following tag as appropriate > > > > > > Reported-by: kernel test robot <lkp@intel.com> > > > > > > > > > > > > New smatch warnings: > > > > > > drivers/gpu/drm/drm_color_mgmt.c:307 drm_crtc_legacy_gamma_set() error: potential null dereference 'blob'. (drm_property_create_blob returns null) > > > > > > > > > > I don't see how this could happen. There's no code path I see where drm_property_create_blob could > > > > > return null... > > > > > > > > IIRC we've received multiple similar nonsense reports from lkp, but > > > > no explanation why it thinks it could ever be null. Hmm, maybe there > > > > is a codepath somewhere that has a null check on the return value? > > > hi Dan, can you help on this to share some idea? > > > > > > The original report is at > > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/F3MVBRGF2R4URBNLNY3GMTSDZUCBX6RF/ > > > > Thanks, Philip. I've pushed a fix for this. > Thanks Dan for this, we will pack the new code to run in the robot. > > > > > It didn't show up if you had the cross function DB built, so it's not > > something I would see in my testing. > Got it, do you recommend this "cross function DB" is necessary for us to > setup or not a must? It's not a must. Smatch is supposed to work fine without it. regards, dan carpenter
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 2855bb918535..848b06c51b0e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -5396,7 +5396,6 @@ static void dm_disable_vblank(struct drm_crtc *crtc) static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = { .reset = dm_crtc_reset_state, .destroy = amdgpu_dm_crtc_destroy, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, .atomic_duplicate_state = dm_crtc_duplicate_state, diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c index 4b485eb512e2..59172acb9738 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c @@ -550,7 +550,6 @@ static void komeda_crtc_vblank_disable(struct drm_crtc *crtc) } static const struct drm_crtc_funcs komeda_crtc_funcs = { - .gamma_set = drm_atomic_helper_legacy_gamma_set, .destroy = drm_crtc_cleanup, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c index 108e7a31bd26..494075ddbef6 100644 --- a/drivers/gpu/drm/arm/malidp_crtc.c +++ b/drivers/gpu/drm/arm/malidp_crtc.c @@ -510,7 +510,6 @@ static void malidp_crtc_disable_vblank(struct drm_crtc *crtc) } static const struct drm_crtc_funcs malidp_crtc_funcs = { - .gamma_set = drm_atomic_helper_legacy_gamma_set, .destroy = drm_crtc_cleanup, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c index 3ebcf5a52c8b..b7bb90ae787f 100644 --- a/drivers/gpu/drm/armada/armada_crtc.c +++ b/drivers/gpu/drm/armada/armada_crtc.c @@ -820,7 +820,6 @@ static const struct drm_crtc_funcs armada_crtc_funcs = { .cursor_set = armada_drm_crtc_cursor_set, .cursor_move = armada_drm_crtc_cursor_move, .destroy = armada_drm_crtc_destroy, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 9db371f4054f..5b0ec785c516 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -903,7 +903,6 @@ static void ast_crtc_atomic_destroy_state(struct drm_crtc *crtc, static const struct drm_crtc_funcs ast_crtc_funcs = { .reset = ast_crtc_reset, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .destroy = drm_crtc_cleanup, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c index c58fa00b4848..05ad75d155e8 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -473,7 +473,6 @@ static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = { .atomic_destroy_state = atmel_hlcdc_crtc_destroy_state, .enable_vblank = atmel_hlcdc_crtc_enable_vblank, .disable_vblank = atmel_hlcdc_crtc_disable_vblank, - .gamma_set = drm_atomic_helper_legacy_gamma_set, }; int atmel_hlcdc_crtc_create(struct drm_device *dev) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 117b186fe646..b114658100b3 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -3499,85 +3499,6 @@ int drm_atomic_helper_page_flip_target(struct drm_crtc *crtc, } EXPORT_SYMBOL(drm_atomic_helper_page_flip_target); -/** - * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table - * @crtc: CRTC object - * @red: red correction table - * @green: green correction table - * @blue: green correction table - * @size: size of the tables - * @ctx: lock acquire context - * - * Implements support for legacy gamma correction table for drivers - * that support color management through the DEGAMMA_LUT/GAMMA_LUT - * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for - * how the atomic color management and gamma tables work. - * - * This function uses the GAMMA_LUT or DEGAMMA_LUT property for the gamma table. - * GAMMA_LUT property is used if it exists, and DEGAMMA_LUT property is used as - * a fallback. - */ -int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, - u16 *red, u16 *green, u16 *blue, - uint32_t size, - struct drm_modeset_acquire_ctx *ctx) -{ - struct drm_device *dev = crtc->dev; - struct drm_atomic_state *state; - struct drm_crtc_state *crtc_state; - struct drm_property_blob *blob = NULL; - struct drm_color_lut *blob_data; - int i, ret = 0; - bool replaced; - - if (!crtc->has_gamma_prop && !crtc->has_degamma_prop) - return -ENODEV; - - state = drm_atomic_state_alloc(crtc->dev); - if (!state) - return -ENOMEM; - - blob = drm_property_create_blob(dev, - sizeof(struct drm_color_lut) * size, - NULL); - if (IS_ERR(blob)) { - ret = PTR_ERR(blob); - blob = NULL; - goto fail; - } - - /* Prepare GAMMA_LUT with the legacy values. */ - blob_data = blob->data; - for (i = 0; i < size; i++) { - blob_data[i].red = red[i]; - blob_data[i].green = green[i]; - blob_data[i].blue = blue[i]; - } - - state->acquire_ctx = ctx; - crtc_state = drm_atomic_get_crtc_state(state, crtc); - if (IS_ERR(crtc_state)) { - ret = PTR_ERR(crtc_state); - goto fail; - } - - /* Set GAMMA/DEGAMMA_LUT and reset DEGAMMA/GAMMA_LUT and CTM */ - replaced = drm_property_replace_blob(&crtc_state->degamma_lut, - crtc->has_gamma_prop ? NULL : blob); - replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); - replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, - crtc->has_gamma_prop ? blob : NULL); - crtc_state->color_mgmt_changed |= replaced; - - ret = drm_atomic_commit(state); - -fail: - drm_atomic_state_put(state); - drm_property_blob_put(blob); - return ret; -} -EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set); - /** * drm_atomic_helper_bridge_propagate_bus_fmt() - Propagate output format to * the input end of a bridge diff --git a/drivers/gpu/drm/drm_color_mgmt.c b/drivers/gpu/drm/drm_color_mgmt.c index 956e59d5f6a7..78b3a9325f7a 100644 --- a/drivers/gpu/drm/drm_color_mgmt.c +++ b/drivers/gpu/drm/drm_color_mgmt.c @@ -22,6 +22,7 @@ #include <linux/uaccess.h> +#include <drm/drm_atomic.h> #include <drm/drm_color_mgmt.h> #include <drm/drm_crtc.h> #include <drm/drm_device.h> @@ -89,9 +90,8 @@ * modes) appropriately. * * There is also support for a legacy gamma table, which is set up by calling - * drm_mode_crtc_set_gamma_size(). Drivers which support both should use - * drm_atomic_helper_legacy_gamma_set() to alias the legacy gamma ramp with the - * "GAMMA_LUT" property above. + * drm_mode_crtc_set_gamma_size(). The DRM core will then alias the legacy gamma + * ramp with "GAMMA_LUT", or if that is unavailable "DEGAMMA_LUT". * * Support for different non RGB color encodings is controlled through * &drm_plane specific COLOR_ENCODING and COLOR_RANGE properties. They @@ -156,9 +156,6 @@ EXPORT_SYMBOL(drm_color_ctm_s31_32_to_qm_n); * optional. The gamma and degamma properties are only attached if * their size is not 0 and ctm_property is only attached if has_ctm is * true. - * - * Drivers should use drm_atomic_helper_legacy_gamma_set() to implement the - * legacy &drm_crtc_funcs.gamma_set callback. */ void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, uint degamma_lut_size, @@ -235,6 +232,109 @@ int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, } EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); +/** + * drm_crtc_supports_legacy_gamma - does the crtc support legacy gamma correction table + * @crtc: CRTC object + * + * Returns true/false if the given crtc supports setting the legacy gamma + * correction table. + */ +bool drm_crtc_supports_legacy_gamma(struct drm_crtc *crtc) +{ + if (!crtc->gamma_size) + return false; + + if (crtc->funcs->gamma_set) + return true; + + return crtc->has_gamma_prop || crtc->has_degamma_prop; +} +EXPORT_SYMBOL(drm_crtc_supports_legacy_gamma); + +/** + * drm_crtc_legacy_gamma_set - set the legacy gamma correction table + * @crtc: CRTC object + * @red: red correction table + * @green: green correction table + * @blue: green correction table + * @size: size of the tables + * @ctx: lock acquire context + * + * Implements support for legacy gamma correction table for drivers + * that have set drm_crtc_funcs.gamma_set or that support color management + * through the DEGAMMA_LUT/GAMMA_LUT properties. See + * drm_crtc_enable_color_mgmt() and the containing chapter for + * how the atomic color management and gamma tables work. + * + * This function sets the gamma using the first one available: + * - drm_crtc_funcs.gamma_set() + * - GAMMA_LUT + * - DEGAMMA_LUT + */ +int drm_crtc_legacy_gamma_set(struct drm_crtc *crtc, + u16 *red, u16 *green, u16 *blue, + uint32_t size, + struct drm_modeset_acquire_ctx *ctx) +{ + struct drm_device *dev = crtc->dev; + struct drm_atomic_state *state; + struct drm_crtc_state *crtc_state; + struct drm_property_blob *blob = NULL; + struct drm_color_lut *blob_data; + int i, ret = 0; + bool replaced; + + if (crtc->funcs->gamma_set) + return crtc->funcs->gamma_set(crtc, red, green, blue, size, ctx); + + if (!crtc->has_gamma_prop && !crtc->has_degamma_prop) + return -ENODEV; + + state = drm_atomic_state_alloc(crtc->dev); + if (!state) + return -ENOMEM; + + blob = drm_property_create_blob(dev, + sizeof(struct drm_color_lut) * size, + NULL); + if (IS_ERR(blob)) { + ret = PTR_ERR(blob); + blob = NULL; + goto fail; + } + + /* Prepare GAMMA_LUT with the legacy values. */ + blob_data = blob->data; + for (i = 0; i < size; i++) { + blob_data[i].red = red[i]; + blob_data[i].green = green[i]; + blob_data[i].blue = blue[i]; + } + + state->acquire_ctx = ctx; + crtc_state = drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) { + ret = PTR_ERR(crtc_state); + goto fail; + } + + /* Set GAMMA/DEGAMMA_LUT and reset DEGAMMA/GAMMA_LUT and CTM */ + replaced = drm_property_replace_blob(&crtc_state->degamma_lut, + crtc->has_gamma_prop ? NULL : blob); + replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); + replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, + crtc->has_gamma_prop ? blob : NULL); + crtc_state->color_mgmt_changed |= replaced; + + ret = drm_atomic_commit(state); + +fail: + drm_atomic_state_put(state); + drm_property_blob_put(blob); + return ret; +} +EXPORT_SYMBOL(drm_crtc_legacy_gamma_set); + /** * drm_mode_gamma_set_ioctl - set the gamma table * @dev: DRM device @@ -266,7 +366,7 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev, if (!crtc) return -ENOENT; - if (crtc->funcs->gamma_set == NULL) + if (!drm_crtc_supports_legacy_gamma(crtc)) return -ENOSYS; /* memcpy into gamma store */ @@ -294,8 +394,8 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev, goto out; } - ret = crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, - crtc->gamma_size, &ctx); + ret = drm_crtc_legacy_gamma_set(crtc, r_base, g_base, b_base, + crtc->gamma_size, &ctx); out: DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 54d4cf1233e9..dd1cca024b16 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -114,6 +114,12 @@ int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, const char *drm_get_color_encoding_name(enum drm_color_encoding encoding); const char *drm_get_color_range_name(enum drm_color_range range); +bool drm_crtc_supports_legacy_gamma(struct drm_crtc *crtc); +int drm_crtc_legacy_gamma_set(struct drm_crtc *crtc, + u16 *red, u16 *green, u16 *blue, + uint32_t size, + struct drm_modeset_acquire_ctx *ctx); + /* IOCTLs */ int drm_mode_gamma_get_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index b0906ef97617..0fb29b1a1f98 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -46,6 +46,7 @@ #include <drm/drm_print.h> #include <drm/drm_vblank.h> +#include "drm_crtc_internal.h" #include "drm_crtc_helper_internal.h" #include "drm_internal.h" @@ -136,15 +137,15 @@ static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) { uint16_t *r_base, *g_base, *b_base; - if (crtc->funcs->gamma_set == NULL) + if (!drm_crtc_supports_legacy_gamma(crtc)) return; r_base = crtc->gamma_store; g_base = r_base + crtc->gamma_size; b_base = g_base + crtc->gamma_size; - crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, - crtc->gamma_size, NULL); + drm_crtc_legacy_gamma_set(crtc, r_base, g_base, b_base, + crtc->gamma_size, NULL); } /** @@ -907,7 +908,7 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info) drm_modeset_lock_all(fb_helper->dev); drm_client_for_each_modeset(modeset, &fb_helper->client) { crtc = modeset->crtc; - if (!crtc->funcs->gamma_set || !crtc->gamma_size) + if (!drm_crtc_supports_legacy_gamma(crtc)) return -EINVAL; if (cmap->start + cmap->len > crtc->gamma_size) @@ -921,8 +922,8 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info) memcpy(g + cmap->start, cmap->green, cmap->len * sizeof(*g)); memcpy(b + cmap->start, cmap->blue, cmap->len * sizeof(*b)); - ret = crtc->funcs->gamma_set(crtc, r, g, b, - crtc->gamma_size, NULL); + ret = drm_crtc_legacy_gamma_set(crtc, r, g, b, crtc->gamma_size, + NULL); if (ret) return ret; } diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index cddbda5303ff..1e90b8c3b1c7 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -16879,7 +16879,6 @@ intel_cursor_plane_create(struct drm_i915_private *dev_priv, } #define INTEL_CRTC_FUNCS \ - .gamma_set = drm_atomic_helper_legacy_gamma_set, \ .set_config = drm_atomic_helper_set_config, \ .destroy = intel_crtc_destroy, \ .page_flip = drm_atomic_helper_page_flip, \ diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index 368bfef8b340..75f948d41b0a 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -755,8 +755,6 @@ static const struct drm_crtc_funcs ingenic_drm_crtc_funcs = { .enable_vblank = ingenic_drm_enable_vblank, .disable_vblank = ingenic_drm_disable_vblank, - - .gamma_set = drm_atomic_helper_legacy_gamma_set, }; static const struct drm_plane_helper_funcs ingenic_drm_plane_helper_funcs = { diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index bfe994230543..b665bd498a4a 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -619,7 +619,6 @@ static const struct drm_crtc_funcs mtk_crtc_funcs = { .reset = mtk_drm_crtc_reset, .atomic_duplicate_state = mtk_drm_crtc_duplicate_state, .atomic_destroy_state = mtk_drm_crtc_destroy_state, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .enable_vblank = mtk_drm_crtc_enable_vblank, .disable_vblank = mtk_drm_crtc_disable_vblank, }; diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.c b/drivers/gpu/drm/nouveau/dispnv50/head.c index 537c1ef2e464..ec361d17e900 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/head.c +++ b/drivers/gpu/drm/nouveau/dispnv50/head.c @@ -503,7 +503,6 @@ nv50_head_destroy(struct drm_crtc *crtc) static const struct drm_crtc_funcs nv50_head_func = { .reset = nv50_head_reset, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .destroy = nv50_head_destroy, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, @@ -518,7 +517,6 @@ nv50_head_func = { static const struct drm_crtc_funcs nvd9_head_func = { .reset = nv50_head_reset, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .destroy = nv50_head_destroy, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c index 7d66269ad998..b97f21cf4a91 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.c +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c @@ -741,7 +741,6 @@ static const struct drm_crtc_funcs omap_crtc_funcs = { .set_config = drm_atomic_helper_set_config, .destroy = omap_crtc_destroy, .page_flip = drm_atomic_helper_page_flip, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .atomic_duplicate_state = omap_crtc_duplicate_state, .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, .atomic_set_property = omap_crtc_atomic_set_property, diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index b5fb941e0f53..f93e0750431d 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -1144,7 +1144,6 @@ static const struct drm_crtc_funcs crtc_funcs_gen3 = { .set_crc_source = rcar_du_crtc_set_crc_source, .verify_crc_source = rcar_du_crtc_verify_crc_source, .get_crc_sources = rcar_du_crtc_get_crc_sources, - .gamma_set = drm_atomic_helper_legacy_gamma_set, }; /* ----------------------------------------------------------------------------- diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index d1e05482641b..8d15cabdcb02 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -1643,7 +1643,6 @@ static const struct drm_crtc_funcs vop_crtc_funcs = { .disable_vblank = vop_crtc_disable_vblank, .set_crc_source = vop_crtc_set_crc_source, .verify_crc_source = vop_crtc_verify_crc_source, - .gamma_set = drm_atomic_helper_legacy_gamma_set, }; static void vop_fb_unref_worker(struct drm_flip_work *work, void *val) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 3980677435cb..7812094f93d6 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -713,7 +713,6 @@ static const struct drm_crtc_funcs ltdc_crtc_funcs = { .enable_vblank = ltdc_crtc_enable_vblank, .disable_vblank = ltdc_crtc_disable_vblank, .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, - .gamma_set = drm_atomic_helper_legacy_gamma_set, }; /* diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index ea710beb8e00..7495d70d6a32 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -884,7 +884,6 @@ static const struct drm_crtc_funcs vc4_crtc_funcs = { .reset = vc4_crtc_reset, .atomic_duplicate_state = vc4_crtc_duplicate_state, .atomic_destroy_state = vc4_crtc_destroy_state, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .enable_vblank = vc4_enable_vblank, .disable_vblank = vc4_disable_vblank, .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c index 8aa5220885f4..e4b782e42f69 100644 --- a/drivers/gpu/drm/vc4/vc4_txp.c +++ b/drivers/gpu/drm/vc4/vc4_txp.c @@ -382,7 +382,6 @@ static const struct drm_crtc_funcs vc4_txp_crtc_funcs = { .reset = vc4_crtc_reset, .atomic_duplicate_state = vc4_crtc_duplicate_state, .atomic_destroy_state = vc4_crtc_destroy_state, - .gamma_set = drm_atomic_helper_legacy_gamma_set, .enable_vblank = vc4_txp_enable_vblank, .disable_vblank = vc4_txp_disable_vblank, }; diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h index 5f47720440fa..4045e2507e11 100644 --- a/include/drm/drm_atomic_helper.h +++ b/include/drm/drm_atomic_helper.h @@ -147,10 +147,6 @@ int drm_atomic_helper_page_flip_target( uint32_t flags, uint32_t target, struct drm_modeset_acquire_ctx *ctx); -int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, - u16 *red, u16 *green, u16 *blue, - uint32_t size, - struct drm_modeset_acquire_ctx *ctx); /** * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC
To support legacy gamma ioctls the drivers need to set drm_crtc_funcs.gamma_set either to a custom implementation or to drm_atomic_helper_legacy_gamma_set. Most of the atomic drivers do the latter. We can simplify this by making the core handle it automatically. Add two functions: drm_crtc_supports_legacy_gamma() which tells if the legacy gamma table can be set, and drm_crtc_legacy_gamma_set() which does the work by either calling the drm_crtc_funcs.gamma_set or using GAMMA_LUT or DEGAMMA_LUT. We can then drop drm_atomic_helper_legacy_gamma_set() and remove all its uses. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 - .../gpu/drm/arm/display/komeda/komeda_crtc.c | 1 - drivers/gpu/drm/arm/malidp_crtc.c | 1 - drivers/gpu/drm/armada/armada_crtc.c | 1 - drivers/gpu/drm/ast/ast_mode.c | 1 - .../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 1 - drivers/gpu/drm/drm_atomic_helper.c | 79 ------------ drivers/gpu/drm/drm_color_mgmt.c | 118 ++++++++++++++++-- drivers/gpu/drm/drm_crtc_internal.h | 6 + drivers/gpu/drm/drm_fb_helper.c | 13 +- drivers/gpu/drm/i915/display/intel_display.c | 1 - drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 2 - drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 1 - drivers/gpu/drm/nouveau/dispnv50/head.c | 2 - drivers/gpu/drm/omapdrm/omap_crtc.c | 1 - drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 1 - drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 1 - drivers/gpu/drm/stm/ltdc.c | 1 - drivers/gpu/drm/vc4/vc4_crtc.c | 1 - drivers/gpu/drm/vc4/vc4_txp.c | 1 - include/drm/drm_atomic_helper.h | 4 - 21 files changed, 122 insertions(+), 116 deletions(-)