Op 13-03-17 om 17:22 schreef Ville Syrjälä:
> On Mon, Mar 13, 2017 at 05:10:28PM +0100, Maarten Lankhorst wrote:
>> As a proof of concept, first try to convert intel_tv, which is a rarely
>> used connector. It has 5 properties, tv format and 4 margins.
>>
>> I'm less certain about the state behavior itself, should we pass a size
>> parameter to intel_connector_alloc instead, so duplicate_state
>> can be done globally if it can be blindly copied?
>>
>> Can we also have a atomic_check function for connectors, so the
>> crtc_state->connectors_changed can be set there? It would be cleaner
>> and more atomic-like.
>>
>> To match the legacy behavior, format can be changed by probing just like
>> in legacy mode.
>>
>> Changes since v1:
>> - Add intel_encoder->swap_state to allow updating connector state.
>> - Add intel_tv->format for detect_mode and mode_valid, updated on atomic commit.
>>
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/i915/intel_display.c | 15 ++
>> drivers/gpu/drm/i915/intel_drv.h | 4 +
>> drivers/gpu/drm/i915/intel_tv.c | 259 +++++++++++++++++++++--------------
>> 3 files changed, 176 insertions(+), 102 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
>> index ac25c9bc8b81..18b7e7546ee1 100644
>> --- a/drivers/gpu/drm/i915/intel_display.c
>> +++ b/drivers/gpu/drm/i915/intel_display.c
>> @@ -12954,6 +12954,20 @@ static void intel_atomic_track_fbs(struct drm_atomic_state *state)
>> to_intel_plane(plane)->frontbuffer_bit);
>> }
>>
>> +static void swap_connector_state(struct drm_atomic_state *state)
>> +{
>> + struct drm_connector *connector;
>> + struct drm_connector_state *new_conn_state;
>> + int i;
>> +
>> + for_each_new_connector_in_state(state, connector, new_conn_state, i) {
>> + struct intel_connector *conn = to_intel_connector(connector);
>> +
>> + if (conn->swap_state)
>> + conn->swap_state(conn, new_conn_state);
>> + }
>> +}
>> +
>> /**
>> * intel_atomic_commit - commit validated state object
>> * @dev: DRM device
>> @@ -13012,6 +13026,7 @@ static int intel_atomic_commit(struct drm_device *dev,
>> dev_priv->cdclk.logical = intel_state->cdclk.logical;
>> dev_priv->cdclk.actual = intel_state->cdclk.actual;
>> }
>> + swap_connector_state(state);
>>
>> drm_atomic_state_get(state);
>> INIT_WORK(&state->commit_work,
>> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
>> index 937623ff6d7c..b7b93799d288 100644
>> --- a/drivers/gpu/drm/i915/intel_drv.h
>> +++ b/drivers/gpu/drm/i915/intel_drv.h
>> @@ -307,6 +307,10 @@ struct intel_connector {
>> * and active (i.e. dpms ON state). */
>> bool (*get_hw_state)(struct intel_connector *);
>>
>> + /* Update device state with the new atomic state. */
>> + void (*swap_state)(struct intel_connector *,
>> + struct drm_connector_state *);
>> +
>> /* Panel info for eDP and LVDS */
>> struct intel_panel panel;
>>
>> diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
>> index 6ed1a3ce47b7..b87d51e61975 100644
>> --- a/drivers/gpu/drm/i915/intel_tv.c
>> +++ b/drivers/gpu/drm/i915/intel_tv.c
>> @@ -48,8 +48,6 @@ struct intel_tv {
>> struct intel_encoder base;
>>
>> int type;
>> - const char *tv_format;
>> - int margin[4];
>> u32 save_TV_H_CTL_1;
>> u32 save_TV_H_CTL_2;
>> u32 save_TV_H_CTL_3;
>> @@ -83,8 +81,20 @@ struct intel_tv {
>>
>> u32 save_TV_DAC;
>> u32 save_TV_CTL;
>> +
>> + int format;
>> +};
>> +
>> +struct intel_tv_connector_state {
>> + struct drm_connector_state base;
>> +
>> + int format;
>> + int margin[4];
>> };
>>
>> +#define to_intel_tv_connector_state(state) \
>> + container_of((state), struct intel_tv_connector_state, base)
>> +
>> struct video_levels {
>> u16 blank, black;
>> u8 burst;
>> @@ -848,6 +858,17 @@ intel_tv_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe)
>> }
>>
>> static void
>> +intel_tv_swap_state(struct intel_connector *connector,
>> + struct drm_connector_state *conn_state)
>> +{
>> + struct intel_tv *intel_tv = intel_attached_tv(&connector->base);
>> + struct intel_tv_connector_state *tv_state =
>> + to_intel_tv_connector_state(conn_state);
>> +
>> + intel_tv->format = tv_state->format;
>> +}
>> +
>> +static void
>> intel_enable_tv(struct intel_encoder *encoder,
>> struct intel_crtc_state *pipe_config,
>> struct drm_connector_state *conn_state)
>> @@ -873,32 +894,25 @@ intel_disable_tv(struct intel_encoder *encoder,
>> I915_WRITE(TV_CTL, I915_READ(TV_CTL) & ~TV_ENC_ENABLE);
>> }
>>
>> -static const struct tv_mode *
>> -intel_tv_mode_lookup(const char *tv_format)
>> +static const struct tv_mode *intel_tv_mode_find(struct drm_connector_state *conn_state)
>> {
>> - int i;
>> -
>> - for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
>> - const struct tv_mode *tv_mode = &tv_modes[i];
>> + int format = to_intel_tv_connector_state(conn_state)->format;
>>
>> - if (!strcmp(tv_format, tv_mode->name))
>> - return tv_mode;
>> - }
>> - return NULL;
>> + return &tv_modes[format];
>> }
>>
>> -static const struct tv_mode *
>> -intel_tv_mode_find(struct intel_tv *intel_tv)
>> +static const struct tv_mode *intel_tv_mode_find_committed(struct drm_connector *connector)
>> {
>> - return intel_tv_mode_lookup(intel_tv->tv_format);
>> + int format = intel_attached_tv(connector)->format;
>> +
>> + return &tv_modes[format];
>> }
>>
>> static enum drm_mode_status
>> intel_tv_mode_valid(struct drm_connector *connector,
>> struct drm_display_mode *mode)
>> {
>> - struct intel_tv *intel_tv = intel_attached_tv(connector);
>> - const struct tv_mode *tv_mode = intel_tv_mode_find(intel_tv);
>> + const struct tv_mode *tv_mode = intel_tv_mode_find_committed(connector);
>> int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
>>
>> if (mode->clock > max_dotclk)
>> @@ -925,8 +939,7 @@ intel_tv_compute_config(struct intel_encoder *encoder,
>> struct intel_crtc_state *pipe_config,
>> struct drm_connector_state *conn_state)
>> {
>> - struct intel_tv *intel_tv = enc_to_tv(encoder);
>> - const struct tv_mode *tv_mode = intel_tv_mode_find(intel_tv);
>> + const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
>>
>> if (!tv_mode)
>> return false;
>> @@ -1032,7 +1045,7 @@ static void intel_tv_pre_enable(struct intel_encoder *encoder,
>> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
>> struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
>> struct intel_tv *intel_tv = enc_to_tv(encoder);
>> - const struct tv_mode *tv_mode = intel_tv_mode_find(intel_tv);
>> + const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
>> u32 tv_ctl;
>> u32 scctl1, scctl2, scctl3;
>> int i, j;
>> @@ -1041,6 +1054,8 @@ static void intel_tv_pre_enable(struct intel_encoder *encoder,
>> bool burst_ena;
>> int xpos = 0x0, ypos = 0x0;
>> unsigned int xsize, ysize;
>> + struct intel_tv_connector_state *tv_state =
>> + to_intel_tv_connector_state(conn_state);
>>
>> if (!tv_mode)
>> return; /* can't happen (mode_prepare prevents this) */
>> @@ -1135,12 +1150,12 @@ static void intel_tv_pre_enable(struct intel_encoder *encoder,
>> else
>> ysize = 2*tv_mode->nbr_end + 1;
>>
>> - xpos += intel_tv->margin[TV_MARGIN_LEFT];
>> - ypos += intel_tv->margin[TV_MARGIN_TOP];
>> - xsize -= (intel_tv->margin[TV_MARGIN_LEFT] +
>> - intel_tv->margin[TV_MARGIN_RIGHT]);
>> - ysize -= (intel_tv->margin[TV_MARGIN_TOP] +
>> - intel_tv->margin[TV_MARGIN_BOTTOM]);
>> + xpos += tv_state->margin[TV_MARGIN_LEFT];
>> + ypos += tv_state->margin[TV_MARGIN_TOP];
>> + xsize -= (tv_state->margin[TV_MARGIN_LEFT] +
>> + tv_state->margin[TV_MARGIN_RIGHT]);
>> + ysize -= (tv_state->margin[TV_MARGIN_TOP] +
>> + tv_state->margin[TV_MARGIN_BOTTOM]);
>> I915_WRITE(TV_WIN_POS, (xpos<<16)|ypos);
>> I915_WRITE(TV_WIN_SIZE, (xsize<<16)|ysize);
>>
>> @@ -1288,7 +1303,7 @@ intel_tv_detect_type(struct intel_tv *intel_tv,
>> static void intel_tv_find_better_format(struct drm_connector *connector)
>> {
>> struct intel_tv *intel_tv = intel_attached_tv(connector);
>> - const struct tv_mode *tv_mode = intel_tv_mode_find(intel_tv);
>> + const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
> intel_tv_mode_find_committed() ?
Either is fine, but yeah latter is probably more correct.
>
>> int i;
>>
>> if ((intel_tv->type == DRM_MODE_CONNECTOR_Component) ==
>> @@ -1304,9 +1319,8 @@ static void intel_tv_find_better_format(struct drm_connector *connector)
>> break;
>> }
>>
>> - intel_tv->tv_format = tv_mode->name;
>> - drm_object_property_set_value(&connector->base,
>> - connector->dev->mode_config.tv_mode_property, i);
>> + to_intel_tv_connector_state(connector->state)->format = i;
> I was thinking we'd do this in duplicate_state.
>
> With these two changes we shouldn't have to access ->state in detect()
> AFAICS.
Hm I think I might need to keep it here. That would return old values when userspace calls get_property, we don't want that. :)
>
>> + intel_attached_tv(connector)->format = i;
>> }
>>
>> /**
>> @@ -1344,18 +1358,17 @@ intel_tv_detect(struct drm_connector *connector, bool force)
>> } else
>> status = connector_status_unknown;
>>
>> + if (status == connector_status_connected) {
>> + intel_tv->type = type;
>> + intel_tv_find_better_format(connector);
>> + }
>> +
>> drm_modeset_drop_locks(&ctx);
>> drm_modeset_acquire_fini(&ctx);
>> - } else
>> - return connector->status;
>>
>> - if (status != connector_status_connected)
>> return status;
>> -
>> - intel_tv->type = type;
>> - intel_tv_find_better_format(connector);
>> -
>> - return connector_status_connected;
>> + } else
>> + return connector->status;
>> }
>>
>> static const struct input_res {
>> @@ -1375,12 +1388,9 @@ static const struct input_res {
>> * Chose preferred mode according to line number of TV format
>> */
>> static void
>> -intel_tv_chose_preferred_modes(struct drm_connector *connector,
>> +intel_tv_chose_preferred_modes(const struct tv_mode *tv_mode,
>> struct drm_display_mode *mode_ptr)
>> {
>> - struct intel_tv *intel_tv = intel_attached_tv(connector);
>> - const struct tv_mode *tv_mode = intel_tv_mode_find(intel_tv);
>> -
>> if (tv_mode->nbr_end < 480 && mode_ptr->vdisplay == 480)
>> mode_ptr->type |= DRM_MODE_TYPE_PREFERRED;
>> else if (tv_mode->nbr_end > 480) {
>> @@ -1403,8 +1413,7 @@ static int
>> intel_tv_get_modes(struct drm_connector *connector)
>> {
>> struct drm_display_mode *mode_ptr;
>> - struct intel_tv *intel_tv = intel_attached_tv(connector);
>> - const struct tv_mode *tv_mode = intel_tv_mode_find(intel_tv);
>> + const struct tv_mode *tv_mode = intel_tv_mode_find_committed(connector);
>> int j, count = 0;
>> u64 tmp;
>>
>> @@ -1447,7 +1456,7 @@ intel_tv_get_modes(struct drm_connector *connector)
>> mode_ptr->clock = (int) tmp;
>>
>> mode_ptr->type = DRM_MODE_TYPE_DRIVER;
>> - intel_tv_chose_preferred_modes(connector, mode_ptr);
>> + intel_tv_chose_preferred_modes(tv_mode, mode_ptr);
> ^^^^^
>
> Pre-existing typo :) Might want to fix that up too.
Indeed.
>
>
>> drm_mode_probed_add(connector, mode_ptr);
>> count++;
>> }
>> @@ -1462,56 +1471,97 @@ intel_tv_destroy(struct drm_connector *connector)
>> kfree(connector);
>> }
>>
>> -
>> static int
>> -intel_tv_set_property(struct drm_connector *connector, struct drm_property *property,
>> - uint64_t val)
>> +intel_tv_atomic_set_property(struct drm_connector *connector,
>> + struct drm_connector_state *conn_state,
>> + struct drm_property *property,
>> + uint64_t val)
>> {
>> struct drm_device *dev = connector->dev;
>> - struct intel_tv *intel_tv = intel_attached_tv(connector);
>> - struct drm_crtc *crtc = intel_tv->base.base.crtc;
>> - int ret = 0;
>> +
>> + struct intel_tv_connector_state *tv_state =
>> + to_intel_tv_connector_state(conn_state);
>> bool changed = false;
>>
>> - ret = drm_object_property_set_value(&connector->base, property, val);
>> - if (ret < 0)
>> - goto out;
>> -
>> - if (property == dev->mode_config.tv_left_margin_property &&
>> - intel_tv->margin[TV_MARGIN_LEFT] != val) {
>> - intel_tv->margin[TV_MARGIN_LEFT] = val;
>> - changed = true;
>> - } else if (property == dev->mode_config.tv_right_margin_property &&
>> - intel_tv->margin[TV_MARGIN_RIGHT] != val) {
>> - intel_tv->margin[TV_MARGIN_RIGHT] = val;
>> - changed = true;
>> - } else if (property == dev->mode_config.tv_top_margin_property &&
>> - intel_tv->margin[TV_MARGIN_TOP] != val) {
>> - intel_tv->margin[TV_MARGIN_TOP] = val;
>> - changed = true;
>> - } else if (property == dev->mode_config.tv_bottom_margin_property &&
>> - intel_tv->margin[TV_MARGIN_BOTTOM] != val) {
>> - intel_tv->margin[TV_MARGIN_BOTTOM] = val;
>> - changed = true;
>> + if (property == dev->mode_config.tv_left_margin_property) {
>> + changed = tv_state->margin[TV_MARGIN_LEFT] != val;
>> +
>> + tv_state->margin[TV_MARGIN_LEFT] = val;
>> + } else if (property == dev->mode_config.tv_right_margin_property) {
>> + changed = tv_state->margin[TV_MARGIN_RIGHT] != val;
>> +
>> + tv_state->margin[TV_MARGIN_RIGHT] = val;
>> + } else if (property == dev->mode_config.tv_top_margin_property) {
>> + changed = tv_state->margin[TV_MARGIN_TOP] != val;
>> +
>> + tv_state->margin[TV_MARGIN_TOP] = val;
>> + } else if (property == dev->mode_config.tv_bottom_margin_property) {
>> + changed = tv_state->margin[TV_MARGIN_BOTTOM] != val;
>> +
>> + tv_state->margin[TV_MARGIN_BOTTOM] = val;
>> } else if (property == dev->mode_config.tv_mode_property) {
>> if (val >= ARRAY_SIZE(tv_modes)) {
>> - ret = -EINVAL;
>> - goto out;
>> + DRM_DEBUG_ATOMIC("value %llu out of tv_modes array bounds\n", val);
>> +
>> + return -EINVAL;
>> }
>> - if (!strcmp(intel_tv->tv_format, tv_modes[val].name))
>> - goto out;
>>
>> - intel_tv->tv_format = tv_modes[val].name;
>> - changed = true;
>> + changed = tv_state->format != val;
>> + tv_state->format = val;
>> + } else {
>> + DRM_DEBUG_ATOMIC("Unknown atomic property %s\n", property->name);
>> + return -EINVAL;
>> + }
>> +
>> + /* Trigger a modeset when connector properties are changed. */
>> + if (changed && conn_state->crtc) {
>> + struct drm_crtc_state *crtc_state =
>> + drm_atomic_get_existing_crtc_state(conn_state->state,
>> + conn_state->crtc);
>> +
>> + crtc_state->connectors_changed = true;
>> + }
>> + return 0;
>> +}
>> +
>> +static int
>> +intel_tv_atomic_get_property(struct drm_connector *connector,
>> + const struct drm_connector_state *state,
>> + struct drm_property *property,
>> + uint64_t *val)
>> +{
>> + struct drm_device *dev = connector->dev;
>> + struct intel_tv_connector_state *tv_state =
>> + to_intel_tv_connector_state(state);
>> +
>> + if (property == dev->mode_config.tv_left_margin_property)
>> + *val = tv_state->margin[TV_MARGIN_LEFT];
>> + else if (property == dev->mode_config.tv_right_margin_property)
>> + *val = tv_state->margin[TV_MARGIN_RIGHT];
>> + else if (property == dev->mode_config.tv_top_margin_property)
>> + *val = tv_state->margin[TV_MARGIN_TOP];
>> + else if (property == dev->mode_config.tv_bottom_margin_property)
>> + *val = tv_state->margin[TV_MARGIN_BOTTOM];
>> + else if (property == dev->mode_config.tv_mode_property) {
>> + *val = tv_state->format;
>> } else {
>> - ret = -EINVAL;
>> - goto out;
>> + DRM_DEBUG_ATOMIC("Unknown atomic property %s\n", property->name);
>> + return -EINVAL;
>> }
>>
>> - if (changed && crtc)
>> - intel_crtc_restore_mode(crtc);
>> -out:
>> - return ret;
>> + return 0;
>> +}
>> +
>> +static struct drm_connector_state *
>> +intel_tv_duplicate_state(struct drm_connector *connector)
>> +{
>> + struct intel_tv_connector_state *state;
>> +
>> + state = kmemdup(&connector->state, sizeof(*state), GFP_KERNEL);
>> + if (state)
>> + __drm_atomic_helper_connector_duplicate_state(connector, &state->base);
>> +
>> + return &state->base;
>> }
>>
>> static const struct drm_connector_funcs intel_tv_connector_funcs = {
>> @@ -1520,11 +1570,12 @@ static const struct drm_connector_funcs intel_tv_connector_funcs = {
>> .late_register = intel_connector_register,
>> .early_unregister = intel_connector_unregister,
>> .destroy = intel_tv_destroy,
>> - .set_property = intel_tv_set_property,
>> - .atomic_get_property = intel_connector_atomic_get_property,
>> + .set_property = drm_atomic_helper_connector_set_property,
>> + .atomic_set_property = intel_tv_atomic_set_property,
>> + .atomic_get_property = intel_tv_atomic_get_property,
>> .fill_modes = drm_helper_probe_single_connector_modes,
>> .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>> - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>> + .atomic_duplicate_state = intel_tv_duplicate_state,
>> };
>>
>> static const struct drm_connector_helper_funcs intel_tv_connector_helper_funcs = {
>> @@ -1547,6 +1598,7 @@ intel_tv_init(struct drm_i915_private *dev_priv)
>> u32 tv_dac_on, tv_dac_off, save_tv_dac;
>> const char *tv_format_names[ARRAY_SIZE(tv_modes)];
>> int i, initial_mode = 0;
>> + struct intel_tv_connector_state *state;
>>
>> if ((I915_READ(TV_CTL) & TV_FUSE_STATE_MASK) == TV_FUSE_STATE_DISABLED)
>> return;
>> @@ -1580,16 +1632,17 @@ intel_tv_init(struct drm_i915_private *dev_priv)
>> return;
>>
>> intel_tv = kzalloc(sizeof(*intel_tv), GFP_KERNEL);
>> - if (!intel_tv) {
>> - return;
>> - }
>> -
>> - intel_connector = intel_connector_alloc();
>> - if (!intel_connector) {
>> + intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL);
>> + state = kzalloc(sizeof(*state), GFP_KERNEL);
>> + if (!intel_tv || !intel_connector || !state) {
>> + kfree(intel_connector);
>> + kfree(state);
>> kfree(intel_tv);
>> return;
>> }
>>
>> + __drm_atomic_helper_connector_reset(&intel_connector->base, &state->base);
>> +
>> intel_encoder = &intel_tv->base;
>> connector = &intel_connector->base;
>>
>> @@ -1617,6 +1670,7 @@ intel_tv_init(struct drm_i915_private *dev_priv)
>> intel_encoder->disable = intel_disable_tv;
>> intel_encoder->get_hw_state = intel_tv_get_hw_state;
>> intel_connector->get_hw_state = intel_connector_get_hw_state;
>> + intel_connector->swap_state = intel_tv_swap_state;
>>
>> intel_connector_attach_encoder(intel_connector, intel_encoder);
>>
>> @@ -1629,12 +1683,13 @@ intel_tv_init(struct drm_i915_private *dev_priv)
>> intel_tv->type = DRM_MODE_CONNECTOR_Unknown;
>>
>> /* BIOS margin values */
>> - intel_tv->margin[TV_MARGIN_LEFT] = 54;
>> - intel_tv->margin[TV_MARGIN_TOP] = 36;
>> - intel_tv->margin[TV_MARGIN_RIGHT] = 46;
>> - intel_tv->margin[TV_MARGIN_BOTTOM] = 37;
>> + state->margin[TV_MARGIN_LEFT] = 54;
>> + state->margin[TV_MARGIN_TOP] = 36;
>> + state->margin[TV_MARGIN_RIGHT] = 46;
>> + state->margin[TV_MARGIN_BOTTOM] = 37;
>>
>> - intel_tv->tv_format = tv_modes[initial_mode].name;
>> + state->format = initial_mode;
>> + intel_tv->format = initial_mode;
>>
>> drm_connector_helper_add(connector, &intel_tv_connector_helper_funcs);
>> connector->interlace_allowed = false;
>> @@ -1648,17 +1703,17 @@ intel_tv_init(struct drm_i915_private *dev_priv)
>> tv_format_names);
>>
>> drm_object_attach_property(&connector->base, dev->mode_config.tv_mode_property,
>> - initial_mode);
>> + state->format);
>> drm_object_attach_property(&connector->base,
>> dev->mode_config.tv_left_margin_property,
>> - intel_tv->margin[TV_MARGIN_LEFT]);
>> + state->margin[TV_MARGIN_LEFT]);
>> drm_object_attach_property(&connector->base,
>> dev->mode_config.tv_top_margin_property,
>> - intel_tv->margin[TV_MARGIN_TOP]);
>> + state->margin[TV_MARGIN_TOP]);
>> drm_object_attach_property(&connector->base,
>> dev->mode_config.tv_right_margin_property,
>> - intel_tv->margin[TV_MARGIN_RIGHT]);
>> + state->margin[TV_MARGIN_RIGHT]);
>> drm_object_attach_property(&connector->base,
>> dev->mode_config.tv_bottom_margin_property,
>> - intel_tv->margin[TV_MARGIN_BOTTOM]);
>> + state->margin[TV_MARGIN_BOTTOM]);
>> }
>> --
>> 2.7.4
>>
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