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drm/stm: ltdc: add modifier support 

Add support of DRM_FORMAT_MOD_LINEAR modifier.

Signed-off-by: Mickael Reulier <mickael.reulier@st.com>
Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1554283514-2960-1-git-send-email-yannick.fertre@st.com
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
This commit is contained in:
Yannick Fertré 2019-04-03 11:25:14 +02:00 committed by Benjamin Gaignard
parent f42f540b9d
commit e7c03dbaaa
1 changed files with 20 additions and 1 deletions
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21
drivers/gpu/drm/stm/ltdc.c
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@ -232,6 +232,11 @@ static const enum ltdc_pix_fmt ltdc_pix_fmt_a1[NB_PF] = {
PF_ARGB4444 /* 0x07 */
};
static const u64 ltdc_format_modifiers[] = {
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID
};
static inline u32 reg_read(void __iomem *base, u32 reg)
{
return readl_relaxed(base + reg);
@ -864,6 +869,16 @@ static void ltdc_plane_atomic_print_state(struct drm_printer *p,
fpsi->counter = 0;
}
static bool ltdc_plane_format_mod_supported(struct drm_plane *plane,
u32 format,
u64 modifier)
{
if (modifier == DRM_FORMAT_MOD_LINEAR)
return true;
return false;
}
static const struct drm_plane_funcs ltdc_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
@ -872,6 +887,7 @@ static const struct drm_plane_funcs ltdc_plane_funcs = {
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.atomic_print_state = ltdc_plane_atomic_print_state,
.format_mod_supported = ltdc_plane_format_mod_supported,
};
static const struct drm_plane_helper_funcs ltdc_plane_helper_funcs = {
@ -890,6 +906,7 @@ static struct drm_plane *ltdc_plane_create(struct drm_device *ddev,
unsigned int i, nb_fmt = 0;
u32 formats[NB_PF * 2];
u32 drm_fmt, drm_fmt_no_alpha;
const u64 *modifiers = ltdc_format_modifiers;
int ret;
/* Get supported pixel formats */
@ -918,7 +935,7 @@ static struct drm_plane *ltdc_plane_create(struct drm_device *ddev,
ret = drm_universal_plane_init(ddev, plane, possible_crtcs,
&ltdc_plane_funcs, formats, nb_fmt,
NULL, type, NULL);
modifiers, type, NULL);
if (ret < 0)
return NULL;
@ -1207,6 +1224,8 @@ int ltdc_load(struct drm_device *ddev)
goto err;
}
ddev->mode_config.allow_fb_modifiers = true;
ret = ltdc_crtc_init(ddev, crtc);
if (ret) {
DRM_ERROR("Failed to init crtc\n");