#include "atmel_hlcdc_dc.h"
+/**
+ * Atmel HLCDC CRTC state structure
+ *
+ * @base: base CRTC state
+ * @output_mode: RGBXXX output mode
+ */
+struct atmel_hlcdc_crtc_state {
+ struct drm_crtc_state base;
+ unsigned int output_mode;
+};
+
+static inline struct atmel_hlcdc_crtc_state *
+drm_crtc_state_to_atmel_hlcdc_crtc_state(struct drm_crtc_state *state)
+{
+ return container_of(state, struct atmel_hlcdc_crtc_state, base);
+}
+
/**
* Atmel HLCDC CRTC structure
*
struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
struct regmap *regmap = crtc->dc->hlcdc->regmap;
struct drm_display_mode *adj = &c->state->adjusted_mode;
+ struct atmel_hlcdc_crtc_state *state;
unsigned long mode_rate;
struct videomode vm;
unsigned long prate;
if (adj->flags & DRM_MODE_FLAG_NHSYNC)
cfg |= ATMEL_HLCDC_HSPOL;
+ state = drm_crtc_state_to_atmel_hlcdc_crtc_state(c->state);
+ cfg |= state->output_mode << 8;
+
regmap_update_bits(regmap, ATMEL_HLCDC_CFG(5),
ATMEL_HLCDC_HSPOL | ATMEL_HLCDC_VSPOL |
ATMEL_HLCDC_VSPDLYS | ATMEL_HLCDC_VSPDLYE |
ATMEL_HLCDC_DISPPOL | ATMEL_HLCDC_DISPDLY |
ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO |
- ATMEL_HLCDC_GUARDTIME_MASK,
+ ATMEL_HLCDC_GUARDTIME_MASK | ATMEL_HLCDC_MODE_MASK,
cfg);
}
+static bool atmel_hlcdc_crtc_mode_fixup(struct drm_crtc *c,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ return atmel_hlcdc_dc_mode_valid(crtc->dc, adjusted_mode) == MODE_OK;
+}
+
static void atmel_hlcdc_crtc_disable(struct drm_crtc *c)
{
struct drm_device *dev = c->dev;
}
}
+#define ATMEL_HLCDC_RGB444_OUTPUT BIT(0)
+#define ATMEL_HLCDC_RGB565_OUTPUT BIT(1)
+#define ATMEL_HLCDC_RGB666_OUTPUT BIT(2)
+#define ATMEL_HLCDC_RGB888_OUTPUT BIT(3)
+#define ATMEL_HLCDC_OUTPUT_MODE_MASK GENMASK(3, 0)
+
+static int atmel_hlcdc_crtc_select_output_mode(struct drm_crtc_state *state)
+{
+ unsigned int output_fmts = ATMEL_HLCDC_OUTPUT_MODE_MASK;
+ struct atmel_hlcdc_crtc_state *hstate;
+ struct drm_connector_state *cstate;
+ struct drm_connector *connector;
+ struct atmel_hlcdc_crtc *crtc;
+ int i;
+
+ crtc = drm_crtc_to_atmel_hlcdc_crtc(state->crtc);
+
+ for_each_connector_in_state(state->state, connector, cstate, i) {
+ struct drm_display_info *info = &connector->display_info;
+ unsigned int supported_fmts = 0;
+ int j;
+
+ if (!cstate->crtc)
+ continue;
+
+ for (j = 0; j < info->num_bus_formats; j++) {
+ switch (info->bus_formats[j]) {
+ case MEDIA_BUS_FMT_RGB444_1X12:
+ supported_fmts |= ATMEL_HLCDC_RGB444_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB565_1X16:
+ supported_fmts |= ATMEL_HLCDC_RGB565_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB666_1X18:
+ supported_fmts |= ATMEL_HLCDC_RGB666_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB888_1X24:
+ supported_fmts |= ATMEL_HLCDC_RGB888_OUTPUT;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (crtc->dc->desc->conflicting_output_formats)
+ output_fmts &= supported_fmts;
+ else
+ output_fmts |= supported_fmts;
+ }
+
+ if (!output_fmts)
+ return -EINVAL;
+
+ hstate = drm_crtc_state_to_atmel_hlcdc_crtc_state(state);
+ hstate->output_mode = fls(output_fmts) - 1;
+
+ return 0;
+}
+
static int atmel_hlcdc_crtc_atomic_check(struct drm_crtc *c,
struct drm_crtc_state *s)
{
- struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+ int ret;
- if (atmel_hlcdc_dc_mode_valid(crtc->dc, &s->adjusted_mode) != MODE_OK)
- return -EINVAL;
+ ret = atmel_hlcdc_crtc_select_output_mode(s);
+ if (ret)
+ return ret;
+
+ ret = atmel_hlcdc_plane_prepare_disc_area(s);
+ if (ret)
+ return ret;
- return atmel_hlcdc_plane_prepare_disc_area(s);
+ return atmel_hlcdc_plane_prepare_ahb_routing(s);
}
static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c,
}
static const struct drm_crtc_helper_funcs lcdc_crtc_helper_funcs = {
+ .mode_fixup = atmel_hlcdc_crtc_mode_fixup,
.mode_set = drm_helper_crtc_mode_set,
.mode_set_nofb = atmel_hlcdc_crtc_mode_set_nofb,
.mode_set_base = drm_helper_crtc_mode_set_base,
atmel_hlcdc_crtc_finish_page_flip(drm_crtc_to_atmel_hlcdc_crtc(c));
}
+void atmel_hlcdc_crtc_reset(struct drm_crtc *crtc)
+{
+ struct atmel_hlcdc_crtc_state *state;
+
+ if (crtc->state && crtc->state->mode_blob)
+ drm_property_unreference_blob(crtc->state->mode_blob);
+
+ if (crtc->state) {
+ state = drm_crtc_state_to_atmel_hlcdc_crtc_state(crtc->state);
+ kfree(state);
+ }
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (state) {
+ crtc->state = &state->base;
+ crtc->state->crtc = crtc;
+ }
+}
+
+static struct drm_crtc_state *
+atmel_hlcdc_crtc_duplicate_state(struct drm_crtc *crtc)
+{
+ struct atmel_hlcdc_crtc_state *state, *cur;
+
+ if (WARN_ON(!crtc->state))
+ return NULL;
+
+ state = kmalloc(sizeof(*state), GFP_KERNEL);
+ if (state)
+ __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
+
+ cur = drm_crtc_state_to_atmel_hlcdc_crtc_state(crtc->state);
+ state->output_mode = cur->output_mode;
+
+ return &state->base;
+}
+
+static void atmel_hlcdc_crtc_destroy_state(struct drm_crtc *crtc,
+ struct drm_crtc_state *s)
+{
+ struct atmel_hlcdc_crtc_state *state;
+
+ state = drm_crtc_state_to_atmel_hlcdc_crtc_state(s);
+ __drm_atomic_helper_crtc_destroy_state(crtc, s);
+ kfree(state);
+}
+
static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = {
.page_flip = drm_atomic_helper_page_flip,
.set_config = drm_atomic_helper_set_config,
.destroy = atmel_hlcdc_crtc_destroy,
- .reset = drm_atomic_helper_crtc_reset,
- .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .reset = atmel_hlcdc_crtc_reset,
+ .atomic_duplicate_state = atmel_hlcdc_crtc_duplicate_state,
+ .atomic_destroy_state = atmel_hlcdc_crtc_destroy_state,
};
int atmel_hlcdc_crtc_create(struct drm_device *dev)
.min_height = 0,
.max_width = 1280,
.max_height = 860,
+ .max_spw = 0x3f,
+ .max_vpw = 0x3f,
+ .max_hpw = 0xff,
+ .conflicting_output_formats = true,
.nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9n12_layers),
.layers = atmel_hlcdc_at91sam9n12_layers,
};
.min_height = 0,
.max_width = 800,
.max_height = 600,
+ .max_spw = 0x3f,
+ .max_vpw = 0x3f,
+ .max_hpw = 0xff,
+ .conflicting_output_formats = true,
.nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9x5_layers),
.layers = atmel_hlcdc_at91sam9x5_layers,
};
.min_height = 0,
.max_width = 2048,
.max_height = 2048,
+ .max_spw = 0x3f,
+ .max_vpw = 0x3f,
+ .max_hpw = 0x1ff,
+ .conflicting_output_formats = true,
.nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers),
.layers = atmel_hlcdc_sama5d3_layers,
};
.min_height = 0,
.max_width = 2048,
.max_height = 2048,
+ .max_spw = 0xff,
+ .max_vpw = 0xff,
+ .max_hpw = 0x3ff,
.nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d4_layers),
.layers = atmel_hlcdc_sama5d4_layers,
};
int hback_porch = mode->htotal - mode->hsync_end;
int hsync_len = mode->hsync_end - mode->hsync_start;
- if (hsync_len > 0x40 || hsync_len < 1)
+ if (hsync_len > dc->desc->max_spw + 1 || hsync_len < 1)
return MODE_HSYNC;
- if (vsync_len > 0x40 || vsync_len < 1)
+ if (vsync_len > dc->desc->max_spw + 1 || vsync_len < 1)
return MODE_VSYNC;
- if (hfront_porch > 0x200 || hfront_porch < 1 ||
- hback_porch > 0x200 || hback_porch < 1 ||
+ if (hfront_porch > dc->desc->max_hpw + 1 || hfront_porch < 1 ||
+ hback_porch > dc->desc->max_hpw + 1 || hback_porch < 1 ||
mode->hdisplay < 1)
return MODE_H_ILLEGAL;
- if (vfront_porch > 0x40 || vfront_porch < 1 ||
- vback_porch > 0x40 || vback_porch < 0 ||
+ if (vfront_porch > dc->desc->max_vpw + 1 || vfront_porch < 1 ||
+ vback_porch > dc->desc->max_vpw || vback_porch < 0 ||
mode->vdisplay < 1)
return MODE_V_ILLEGAL;
}
}
+struct atmel_hlcdc_dc_commit {
+ struct work_struct work;
+ struct drm_device *dev;
+ struct drm_atomic_state *state;
+};
+
+static void
+atmel_hlcdc_dc_atomic_complete(struct atmel_hlcdc_dc_commit *commit)
+{
+ struct drm_device *dev = commit->dev;
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+ struct drm_atomic_state *old_state = commit->state;
+
+ /* Apply the atomic update. */
+ drm_atomic_helper_commit_modeset_disables(dev, old_state);
+ drm_atomic_helper_commit_planes(dev, old_state, false);
+ drm_atomic_helper_commit_modeset_enables(dev, old_state);
+
+ drm_atomic_helper_wait_for_vblanks(dev, old_state);
+
+ drm_atomic_helper_cleanup_planes(dev, old_state);
+
+ drm_atomic_state_free(old_state);
+
+ /* Complete the commit, wake up any waiter. */
+ spin_lock(&dc->commit.wait.lock);
+ dc->commit.pending = false;
+ wake_up_all_locked(&dc->commit.wait);
+ spin_unlock(&dc->commit.wait.lock);
+
+ kfree(commit);
+}
+
+static void atmel_hlcdc_dc_atomic_work(struct work_struct *work)
+{
+ struct atmel_hlcdc_dc_commit *commit =
+ container_of(work, struct atmel_hlcdc_dc_commit, work);
+
+ atmel_hlcdc_dc_atomic_complete(commit);
+}
+
+static int atmel_hlcdc_dc_atomic_commit(struct drm_device *dev,
+ struct drm_atomic_state *state,
+ bool async)
+{
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+ struct atmel_hlcdc_dc_commit *commit;
+ int ret;
+
+ ret = drm_atomic_helper_prepare_planes(dev, state);
+ if (ret)
+ return ret;
+
+ /* Allocate the commit object. */
+ commit = kzalloc(sizeof(*commit), GFP_KERNEL);
+ if (!commit) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ INIT_WORK(&commit->work, atmel_hlcdc_dc_atomic_work);
+ commit->dev = dev;
+ commit->state = state;
+
+ spin_lock(&dc->commit.wait.lock);
+ ret = wait_event_interruptible_locked(dc->commit.wait,
+ !dc->commit.pending);
+ if (ret == 0)
+ dc->commit.pending = true;
+ spin_unlock(&dc->commit.wait.lock);
+
+ if (ret) {
+ kfree(commit);
+ goto error;
+ }
+
+ /* Swap the state, this is the point of no return. */
+ drm_atomic_helper_swap_state(dev, state);
+
+ if (async)
+ queue_work(dc->wq, &commit->work);
+ else
+ atmel_hlcdc_dc_atomic_complete(commit);
+
+ return 0;
+
+error:
+ drm_atomic_helper_cleanup_planes(dev, state);
+ return ret;
+}
+
static const struct drm_mode_config_funcs mode_config_funcs = {
.fb_create = atmel_hlcdc_fb_create,
.output_poll_changed = atmel_hlcdc_fb_output_poll_changed,
.atomic_check = drm_atomic_helper_check,
- .atomic_commit = drm_atomic_helper_commit,
+ .atomic_commit = atmel_hlcdc_dc_atomic_commit,
};
static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
ret = atmel_hlcdc_create_outputs(dev);
if (ret) {
- dev_err(dev->dev, "failed to create panel: %d\n", ret);
+ dev_err(dev->dev, "failed to create HLCDC outputs: %d\n", ret);
return ret;
}
if (!dc->wq)
return -ENOMEM;
+ init_waitqueue_head(&dc->commit.wait);
dc->desc = match->data;
dc->hlcdc = dev_get_drvdata(dev->dev->parent);
dev->dev_private = dc;
* @min_height: minimum height supported by the Display Controller
* @max_width: maximum width supported by the Display Controller
* @max_height: maximum height supported by the Display Controller
+ * @max_spw: maximum vertical/horizontal pulse width
+ * @max_vpw: maximum vertical back/front porch width
+ * @max_hpw: maximum horizontal back/front porch width
+ * @conflicting_output_formats: true if RGBXXX output formats conflict with
+ * each other.
* @layers: a layer description table describing available layers
* @nlayers: layer description table size
*/
int min_height;
int max_width;
int max_height;
+ int max_spw;
+ int max_vpw;
+ int max_hpw;
+ bool conflicting_output_formats;
const struct atmel_hlcdc_layer_desc *layers;
int nlayers;
};
* @planes: instantiated planes
* @layers: active HLCDC layer
* @wq: display controller workqueue
+ * @commit: used for async commit handling
*/
struct atmel_hlcdc_dc {
const struct atmel_hlcdc_dc_desc *desc;
struct atmel_hlcdc_planes *planes;
struct atmel_hlcdc_layer *layers[ATMEL_HLCDC_MAX_LAYERS];
struct workqueue_struct *wq;
+ struct {
+ wait_queue_head_t wait;
+ bool pending;
+ } commit;
};
extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
atmel_hlcdc_create_planes(struct drm_device *dev);
int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state);
+int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state);
void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
#include "atmel_hlcdc_dc.h"
-/**
- * Atmel HLCDC RGB output mode
- */
-enum atmel_hlcdc_connector_rgb_mode {
- ATMEL_HLCDC_CONNECTOR_RGB444,
- ATMEL_HLCDC_CONNECTOR_RGB565,
- ATMEL_HLCDC_CONNECTOR_RGB666,
- ATMEL_HLCDC_CONNECTOR_RGB888,
-};
-
/**
* Atmel HLCDC RGB connector structure
*
* @connector: DRM connector
* @encoder: DRM encoder
* @dc: pointer to the atmel_hlcdc_dc structure
- * @dpms: current DPMS mode
+ * @panel: panel connected on the RGB output
*/
struct atmel_hlcdc_rgb_output {
struct drm_connector connector;
struct drm_encoder encoder;
struct atmel_hlcdc_dc *dc;
- int dpms;
+ struct drm_panel *panel;
};
static inline struct atmel_hlcdc_rgb_output *
return container_of(encoder, struct atmel_hlcdc_rgb_output, encoder);
}
-/**
- * Atmel HLCDC Panel device structure
- *
- * This structure is specialization of the slave device structure to
- * interface with drm panels.
- *
- * @base: base slave device fields
- * @panel: drm panel attached to this slave device
- */
-struct atmel_hlcdc_panel {
- struct atmel_hlcdc_rgb_output base;
- struct drm_panel *panel;
-};
-
-static inline struct atmel_hlcdc_panel *
-atmel_hlcdc_rgb_output_to_panel(struct atmel_hlcdc_rgb_output *output)
-{
- return container_of(output, struct atmel_hlcdc_panel, base);
-}
-
-static void atmel_hlcdc_panel_encoder_enable(struct drm_encoder *encoder)
+static void atmel_hlcdc_rgb_encoder_enable(struct drm_encoder *encoder)
{
struct atmel_hlcdc_rgb_output *rgb =
drm_encoder_to_atmel_hlcdc_rgb_output(encoder);
- struct atmel_hlcdc_panel *panel = atmel_hlcdc_rgb_output_to_panel(rgb);
- drm_panel_enable(panel->panel);
+ if (rgb->panel) {
+ drm_panel_prepare(rgb->panel);
+ drm_panel_enable(rgb->panel);
+ }
}
-static void atmel_hlcdc_panel_encoder_disable(struct drm_encoder *encoder)
+static void atmel_hlcdc_rgb_encoder_disable(struct drm_encoder *encoder)
{
struct atmel_hlcdc_rgb_output *rgb =
drm_encoder_to_atmel_hlcdc_rgb_output(encoder);
- struct atmel_hlcdc_panel *panel = atmel_hlcdc_rgb_output_to_panel(rgb);
- drm_panel_disable(panel->panel);
-}
-
-static bool
-atmel_hlcdc_panel_encoder_mode_fixup(struct drm_encoder *encoder,
- const struct drm_display_mode *mode,
- struct drm_display_mode *adjusted)
-{
- return true;
-}
-
-static void
-atmel_hlcdc_rgb_encoder_mode_set(struct drm_encoder *encoder,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted)
-{
- struct atmel_hlcdc_rgb_output *rgb =
- drm_encoder_to_atmel_hlcdc_rgb_output(encoder);
- struct drm_display_info *info = &rgb->connector.display_info;
- unsigned int cfg;
-
- cfg = 0;
-
- if (info->num_bus_formats) {
- switch (info->bus_formats[0]) {
- case MEDIA_BUS_FMT_RGB565_1X16:
- cfg |= ATMEL_HLCDC_CONNECTOR_RGB565 << 8;
- break;
- case MEDIA_BUS_FMT_RGB666_1X18:
- cfg |= ATMEL_HLCDC_CONNECTOR_RGB666 << 8;
- break;
- case MEDIA_BUS_FMT_RGB888_1X24:
- cfg |= ATMEL_HLCDC_CONNECTOR_RGB888 << 8;
- break;
- case MEDIA_BUS_FMT_RGB444_1X12:
- default:
- break;
- }
+ if (rgb->panel) {
+ drm_panel_disable(rgb->panel);
+ drm_panel_unprepare(rgb->panel);
}
-
- regmap_update_bits(rgb->dc->hlcdc->regmap, ATMEL_HLCDC_CFG(5),
- ATMEL_HLCDC_MODE_MASK,
- cfg);
}
static const struct drm_encoder_helper_funcs atmel_hlcdc_panel_encoder_helper_funcs = {
- .mode_fixup = atmel_hlcdc_panel_encoder_mode_fixup,
- .mode_set = atmel_hlcdc_rgb_encoder_mode_set,
- .disable = atmel_hlcdc_panel_encoder_disable,
- .enable = atmel_hlcdc_panel_encoder_enable,
+ .disable = atmel_hlcdc_rgb_encoder_disable,
+ .enable = atmel_hlcdc_rgb_encoder_enable,
};
static void atmel_hlcdc_rgb_encoder_destroy(struct drm_encoder *encoder)
{
struct atmel_hlcdc_rgb_output *rgb =
drm_connector_to_atmel_hlcdc_rgb_output(connector);
- struct atmel_hlcdc_panel *panel = atmel_hlcdc_rgb_output_to_panel(rgb);
- return panel->panel->funcs->get_modes(panel->panel);
+ if (rgb->panel)
+ return rgb->panel->funcs->get_modes(rgb->panel);
+
+ return 0;
}
static int atmel_hlcdc_rgb_mode_valid(struct drm_connector *connector,
static enum drm_connector_status
atmel_hlcdc_panel_connector_detect(struct drm_connector *connector, bool force)
{
- return connector_status_connected;
+ struct atmel_hlcdc_rgb_output *rgb =
+ drm_connector_to_atmel_hlcdc_rgb_output(connector);
+
+ if (rgb->panel)
+ return connector_status_connected;
+
+ return connector_status_disconnected;
}
static void
{
struct atmel_hlcdc_rgb_output *rgb =
drm_connector_to_atmel_hlcdc_rgb_output(connector);
- struct atmel_hlcdc_panel *panel = atmel_hlcdc_rgb_output_to_panel(rgb);
- drm_panel_detach(panel->panel);
+ if (rgb->panel)
+ drm_panel_detach(rgb->panel);
+
drm_connector_cleanup(connector);
}
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
-static int atmel_hlcdc_create_panel_output(struct drm_device *dev,
- struct of_endpoint *ep)
+static int atmel_hlcdc_check_endpoint(struct drm_device *dev,
+ const struct of_endpoint *ep)
{
- struct atmel_hlcdc_dc *dc = dev->dev_private;
struct device_node *np;
- struct drm_panel *p = NULL;
- struct atmel_hlcdc_panel *panel;
- int ret;
+ void *obj;
np = of_graph_get_remote_port_parent(ep->local_node);
- if (!np)
- return -EINVAL;
- p = of_drm_find_panel(np);
+ obj = of_drm_find_panel(np);
+ if (!obj)
+ obj = of_drm_find_bridge(np);
+
of_node_put(np);
- if (!p)
- return -EPROBE_DEFER;
+ return obj ? 0 : -EPROBE_DEFER;
+}
- panel = devm_kzalloc(dev->dev, sizeof(*panel), GFP_KERNEL);
- if (!panel)
- return -EINVAL;
+static int atmel_hlcdc_attach_endpoint(struct drm_device *dev,
+ const struct of_endpoint *ep)
+{
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+ struct atmel_hlcdc_rgb_output *output;
+ struct device_node *np;
+ struct drm_panel *panel;
+ struct drm_bridge *bridge;
+ int ret;
- panel->base.dpms = DRM_MODE_DPMS_OFF;
+ output = devm_kzalloc(dev->dev, sizeof(*output), GFP_KERNEL);
+ if (!output)
+ return -EINVAL;
- panel->base.dc = dc;
+ output->dc = dc;
- drm_encoder_helper_add(&panel->base.encoder,
+ drm_encoder_helper_add(&output->encoder,
&atmel_hlcdc_panel_encoder_helper_funcs);
- ret = drm_encoder_init(dev, &panel->base.encoder,
+ ret = drm_encoder_init(dev, &output->encoder,
&atmel_hlcdc_panel_encoder_funcs,
- DRM_MODE_ENCODER_LVDS, NULL);
+ DRM_MODE_ENCODER_NONE, NULL);
if (ret)
return ret;
- panel->base.connector.dpms = DRM_MODE_DPMS_OFF;
- panel->base.connector.polled = DRM_CONNECTOR_POLL_CONNECT;
- drm_connector_helper_add(&panel->base.connector,
- &atmel_hlcdc_panel_connector_helper_funcs);
- ret = drm_connector_init(dev, &panel->base.connector,
- &atmel_hlcdc_panel_connector_funcs,
- DRM_MODE_CONNECTOR_LVDS);
- if (ret)
- goto err_encoder_cleanup;
+ output->encoder.possible_crtcs = 0x1;
+
+ np = of_graph_get_remote_port_parent(ep->local_node);
- drm_mode_connector_attach_encoder(&panel->base.connector,
- &panel->base.encoder);
- panel->base.encoder.possible_crtcs = 0x1;
+ ret = -EPROBE_DEFER;
+
+ panel = of_drm_find_panel(np);
+ if (panel) {
+ of_node_put(np);
+ output->connector.dpms = DRM_MODE_DPMS_OFF;
+ output->connector.polled = DRM_CONNECTOR_POLL_CONNECT;
+ drm_connector_helper_add(&output->connector,
+ &atmel_hlcdc_panel_connector_helper_funcs);
+ ret = drm_connector_init(dev, &output->connector,
+ &atmel_hlcdc_panel_connector_funcs,
+ DRM_MODE_CONNECTOR_Unknown);
+ if (ret)
+ goto err_encoder_cleanup;
+
+ drm_mode_connector_attach_encoder(&output->connector,
+ &output->encoder);
+
+ ret = drm_panel_attach(panel, &output->connector);
+ if (ret) {
+ drm_connector_cleanup(&output->connector);
+ goto err_encoder_cleanup;
+ }
- drm_panel_attach(p, &panel->base.connector);
- panel->panel = p;
+ output->panel = panel;
- return 0;
+ return 0;
+ }
+
+ bridge = of_drm_find_bridge(np);
+ of_node_put(np);
+
+ if (bridge) {
+ output->encoder.bridge = bridge;
+ bridge->encoder = &output->encoder;
+ ret = drm_bridge_attach(dev, bridge);
+ if (!ret)
+ return 0;
+ }
err_encoder_cleanup:
- drm_encoder_cleanup(&panel->base.encoder);
+ drm_encoder_cleanup(&output->encoder);
return ret;
}
int atmel_hlcdc_create_outputs(struct drm_device *dev)
{
- struct device_node *port_np, *np;
+ struct device_node *ep_np = NULL;
struct of_endpoint ep;
int ret;
- port_np = of_get_child_by_name(dev->dev->of_node, "port");
- if (!port_np)
- return -EINVAL;
-
- np = of_get_child_by_name(port_np, "endpoint");
- of_node_put(port_np);
+ for_each_endpoint_of_node(dev->dev->of_node, ep_np) {
+ ret = of_graph_parse_endpoint(ep_np, &ep);
+ if (!ret)
+ ret = atmel_hlcdc_check_endpoint(dev, &ep);
- if (!np)
- return -EINVAL;
+ of_node_put(ep_np);
+ if (ret)
+ return ret;
+ }
- ret = of_graph_parse_endpoint(np, &ep);
- of_node_put(port_np);
+ for_each_endpoint_of_node(dev->dev->of_node, ep_np) {
+ ret = of_graph_parse_endpoint(ep_np, &ep);
+ if (!ret)
+ ret = atmel_hlcdc_attach_endpoint(dev, &ep);
- if (ret)
- return ret;
+ of_node_put(ep_np);
+ if (ret)
+ return ret;
+ }
- /* We currently only support panel output */
- return atmel_hlcdc_create_panel_output(dev, &ep);
+ return 0;
}
* @xstride: value to add to the pixel pointer between each line
* @pstride: value to add to the pixel pointer between each pixel
* @nplanes: number of planes (deduced from pixel_format)
+ * @prepared: plane update has been prepared
*/
struct atmel_hlcdc_plane_state {
struct drm_plane_state base;
int disc_w;
int disc_h;
+ int ahb_id;
+
/* These fields are private and should not be touched */
int bpp[ATMEL_HLCDC_MAX_PLANES];
unsigned int offsets[ATMEL_HLCDC_MAX_PLANES];
int xstride[ATMEL_HLCDC_MAX_PLANES];
int pstride[ATMEL_HLCDC_MAX_PLANES];
int nplanes;
+ bool prepared;
};
static inline struct atmel_hlcdc_plane_state *
atmel_hlcdc_layer_update_cfg(&plane->layer,
ATMEL_HLCDC_LAYER_DMA_CFG_ID,
- ATMEL_HLCDC_LAYER_DMA_BLEN_MASK,
- ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16);
+ ATMEL_HLCDC_LAYER_DMA_BLEN_MASK |
+ ATMEL_HLCDC_LAYER_DMA_SIF,
+ ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 |
+ state->ahb_id);
atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config,
ATMEL_HLCDC_LAYER_ITER2BL |
}
}
+int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state)
+{
+ unsigned int ahb_load[2] = { };
+ struct drm_plane *plane;
+
+ drm_atomic_crtc_state_for_each_plane(plane, c_state) {
+ struct atmel_hlcdc_plane_state *plane_state;
+ struct drm_plane_state *plane_s;
+ unsigned int pixels, load = 0;
+ int i;
+
+ plane_s = drm_atomic_get_plane_state(c_state->state, plane);
+ if (IS_ERR(plane_s))
+ return PTR_ERR(plane_s);
+
+ plane_state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(plane_s);
+
+ pixels = (plane_state->src_w * plane_state->src_h) -
+ (plane_state->disc_w * plane_state->disc_h);
+
+ for (i = 0; i < plane_state->nplanes; i++)
+ load += pixels * plane_state->bpp[i];
+
+ if (ahb_load[0] <= ahb_load[1])
+ plane_state->ahb_id = 0;
+ else
+ plane_state->ahb_id = 1;
+
+ ahb_load[plane_state->ahb_id] += load;
+ }
+
+ return 0;
+}
+
int
atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state)
{
static int atmel_hlcdc_plane_prepare_fb(struct drm_plane *p,
const struct drm_plane_state *new_state)
{
+ /*
+ * FIXME: we should avoid this const -> non-const cast but it's
+ * currently the only solution we have to modify the ->prepared
+ * state and rollback the update request.
+ * Ideally, we should rework the code to attach all the resources
+ * to atmel_hlcdc_plane_state (including the DMA desc allocation),
+ * but this require a complete rework of the atmel_hlcdc_layer
+ * code.
+ */
+ struct drm_plane_state *s = (struct drm_plane_state *)new_state;
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+ struct atmel_hlcdc_plane_state *state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(s);
+ int ret;
+
+ ret = atmel_hlcdc_layer_update_start(&plane->layer);
+ if (!ret)
+ state->prepared = true;
+
+ return ret;
+}
+
+static void atmel_hlcdc_plane_cleanup_fb(struct drm_plane *p,
+ const struct drm_plane_state *old_state)
+{
+ /*
+ * FIXME: we should avoid this const -> non-const cast but it's
+ * currently the only solution we have to modify the ->prepared
+ * state and rollback the update request.
+ * Ideally, we should rework the code to attach all the resources
+ * to atmel_hlcdc_plane_state (including the DMA desc allocation),
+ * but this require a complete rework of the atmel_hlcdc_layer
+ * code.
+ */
+ struct drm_plane_state *s = (struct drm_plane_state *)old_state;
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
+ struct atmel_hlcdc_plane_state *state =
+ drm_plane_state_to_atmel_hlcdc_plane_state(s);
- if (!new_state->fb)
- return 0;
+ /*
+ * The Request has already been applied or cancelled, nothing to do
+ * here.
+ */
+ if (!state->prepared)
+ return;
- return atmel_hlcdc_layer_update_start(&plane->layer);
+ atmel_hlcdc_layer_update_rollback(&plane->layer);
+ state->prepared = false;
}
static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
static struct drm_plane_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = {
.prepare_fb = atmel_hlcdc_plane_prepare_fb,
+ .cleanup_fb = atmel_hlcdc_plane_cleanup_fb,
.atomic_check = atmel_hlcdc_plane_atomic_check,
.atomic_update = atmel_hlcdc_plane_atomic_update,
.atomic_disable = atmel_hlcdc_plane_atomic_disable,
return NULL;
copy->disc_updated = false;
+ copy->prepared = false;
if (copy->base.fb)
drm_framebuffer_reference(copy->base.fb);
projects / deliverable / linux.git / commitdiff
