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drm/ast: astdp: Add connector state

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Add dedicated connector state for ASTDP connectors. The state will
store values for programming the transmitter chip.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250204133209.403327-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-02-11 08:28:30 +01:00
parent e4476cd116
commit 3214403cf9
1 changed files with 58 additions and 8 deletions
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drivers/gpu/drm/ast/ast_dp.c
+58 -8
View File
@@ -42,6 +42,16 @@ static const struct ast_astdp_mode_index_table_entry ast_astdp_mode_index_table[
{ 0 }
};
struct ast_astdp_connector_state {
struct drm_connector_state base;
};
static struct ast_astdp_connector_state *
to_ast_astdp_connector_state(const struct drm_connector_state *state)
{
return container_of(state, struct ast_astdp_connector_state, base);
}
static int __ast_astdp_get_mode_index(unsigned int hdisplay, unsigned int vdisplay)
{
const struct ast_astdp_mode_index_table_entry *entry = ast_astdp_mode_index_table;
@@ -442,18 +452,58 @@ static const struct drm_connector_helper_funcs ast_astdp_connector_helper_funcs
.detect_ctx = ast_astdp_connector_helper_detect_ctx,
};
static void ast_astdp_connector_reset(struct drm_connector *connector)
{
struct ast_astdp_connector_state *astdp_state =
kzalloc(sizeof(*astdp_state), GFP_KERNEL);
if (connector->state)
connector->funcs->atomic_destroy_state(connector, connector->state);
if (astdp_state)
__drm_atomic_helper_connector_reset(connector, &astdp_state->base);
else
__drm_atomic_helper_connector_reset(connector, NULL);
}
static struct drm_connector_state *
ast_astdp_connector_atomic_duplicate_state(struct drm_connector *connector)
{
struct ast_astdp_connector_state *new_astdp_state;
struct drm_device *dev = connector->dev;
if (drm_WARN_ON(dev, !connector->state))
return NULL;
new_astdp_state = kmalloc(sizeof(*new_astdp_state), GFP_KERNEL);
if (!new_astdp_state)
return NULL;
__drm_atomic_helper_connector_duplicate_state(connector, &new_astdp_state->base);
return &new_astdp_state->base;
}
static void ast_astdp_connector_atomic_destroy_state(struct drm_connector *connector,
struct drm_connector_state *state)
{
struct ast_astdp_connector_state *astdp_state = to_ast_astdp_connector_state(state);
__drm_atomic_helper_connector_destroy_state(&astdp_state->base);
kfree(astdp_state);
}
static const struct drm_connector_funcs ast_astdp_connector_funcs = {
.reset = ast_astdp_connector_reset,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = ast_astdp_connector_atomic_duplicate_state,
.atomic_destroy_state = ast_astdp_connector_atomic_destroy_state,
};
/*
* Output
*/
static const struct drm_connector_funcs ast_astdp_connector_funcs = {
.reset = drm_atomic_helper_connector_reset,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
int ast_astdp_output_init(struct ast_device *ast)
{
struct drm_device *dev = &ast->base;