Commit 30bd8b86 authored by Russell King's avatar Russell King

drm/i2c: tda998x: convert to bridge driver

Convert tda998x to a bridge driver with built-in encoder support for
compatibility with existing component drivers.
Tested-by: default avatarPeter Rosin <peda@axentia.se>
Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
parent 6c1187aa
......@@ -69,6 +69,7 @@ struct tda998x_priv {
bool edid_delay_active;
struct drm_encoder encoder;
struct drm_bridge bridge;
struct drm_connector connector;
struct tda998x_audio_port audio_port[2];
......@@ -79,9 +80,10 @@ struct tda998x_priv {
#define conn_to_tda998x_priv(x) \
container_of(x, struct tda998x_priv, connector)
#define enc_to_tda998x_priv(x) \
container_of(x, struct tda998x_priv, encoder)
#define bridge_to_tda998x_priv(x) \
container_of(x, struct tda998x_priv, bridge)
/* The TDA9988 series of devices use a paged register scheme.. to simplify
* things we encode the page # in upper bits of the register #. To read/
......@@ -1271,7 +1273,7 @@ tda998x_connector_best_encoder(struct drm_connector *connector)
{
struct tda998x_priv *priv = conn_to_tda998x_priv(connector);
return &priv->encoder;
return priv->bridge.encoder;
}
static
......@@ -1301,15 +1303,32 @@ static int tda998x_connector_init(struct tda998x_priv *priv,
if (ret)
return ret;
drm_mode_connector_attach_encoder(&priv->connector, &priv->encoder);
drm_mode_connector_attach_encoder(&priv->connector,
priv->bridge.encoder);
return 0;
}
/* DRM encoder functions */
/* DRM bridge functions */
static int tda998x_bridge_attach(struct drm_bridge *bridge)
{
struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
return tda998x_connector_init(priv, bridge->dev);
}
static void tda998x_bridge_detach(struct drm_bridge *bridge)
{
struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
drm_connector_cleanup(&priv->connector);
}
static void tda998x_enable(struct tda998x_priv *priv)
static void tda998x_bridge_enable(struct drm_bridge *bridge)
{
struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
if (!priv->is_on) {
/* enable video ports, audio will be enabled later */
reg_write(priv, REG_ENA_VP_0, 0xff);
......@@ -1324,8 +1343,10 @@ static void tda998x_enable(struct tda998x_priv *priv)
}
}
static void tda998x_disable(struct tda998x_priv *priv)
static void tda998x_bridge_disable(struct drm_bridge *bridge)
{
struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
if (priv->is_on) {
/* disable video ports */
reg_write(priv, REG_ENA_VP_0, 0x00);
......@@ -1336,29 +1357,11 @@ static void tda998x_disable(struct tda998x_priv *priv)
}
}
static void tda998x_encoder_dpms(struct drm_encoder *encoder, int mode)
{
struct tda998x_priv *priv = enc_to_tda998x_priv(encoder);
bool on;
/* we only care about on or off: */
on = mode == DRM_MODE_DPMS_ON;
if (on == priv->is_on)
return;
if (on)
tda998x_enable(priv);
else
tda998x_disable(priv);
}
static void
tda998x_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
static void tda998x_bridge_mode_set(struct drm_bridge *bridge,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct tda998x_priv *priv = enc_to_tda998x_priv(encoder);
struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);
u16 ref_pix, ref_line, n_pix, n_line;
u16 hs_pix_s, hs_pix_e;
u16 vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e;
......@@ -1565,8 +1568,18 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder,
mutex_unlock(&priv->audio_mutex);
}
static const struct drm_bridge_funcs tda998x_bridge_funcs = {
.attach = tda998x_bridge_attach,
.detach = tda998x_bridge_detach,
.disable = tda998x_bridge_disable,
.mode_set = tda998x_bridge_mode_set,
.enable = tda998x_bridge_enable,
};
static void tda998x_destroy(struct tda998x_priv *priv)
{
drm_bridge_remove(&priv->bridge);
/* disable all IRQs and free the IRQ handler */
cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
......@@ -1659,6 +1672,7 @@ static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
mutex_init(&priv->mutex); /* protect the page access */
mutex_init(&priv->audio_mutex); /* protect access from audio thread */
mutex_init(&priv->edid_mutex);
INIT_LIST_HEAD(&priv->bridge.list);
init_waitqueue_head(&priv->edid_delay_waitq);
timer_setup(&priv->edid_delay_timer, tda998x_edid_delay_done, 0);
INIT_WORK(&priv->detect_work, tda998x_detect_work);
......@@ -1819,43 +1833,25 @@ static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
tda998x_set_config(priv, client->dev.platform_data);
}
priv->bridge.funcs = &tda998x_bridge_funcs;
#ifdef CONFIG_OF
priv->bridge.of_node = dev->of_node;
#endif
drm_bridge_add(&priv->bridge);
return 0;
fail:
/* if encoder_init fails, the encoder slave is never registered,
* so cleanup here:
*/
i2c_unregister_device(priv->cec);
if (priv->cec_notify)
cec_notifier_put(priv->cec_notify);
if (client->irq)
free_irq(client->irq, priv);
tda998x_destroy(priv);
err_irq:
return ret;
}
static void tda998x_encoder_prepare(struct drm_encoder *encoder)
{
tda998x_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
}
static void tda998x_encoder_commit(struct drm_encoder *encoder)
{
tda998x_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
}
static const struct drm_encoder_helper_funcs tda998x_encoder_helper_funcs = {
.dpms = tda998x_encoder_dpms,
.prepare = tda998x_encoder_prepare,
.commit = tda998x_encoder_commit,
.mode_set = tda998x_encoder_mode_set,
};
/* DRM encoder functions */
static void tda998x_encoder_destroy(struct drm_encoder *encoder)
{
struct tda998x_priv *priv = enc_to_tda998x_priv(encoder);
tda998x_destroy(priv);
drm_encoder_cleanup(encoder);
}
......@@ -1863,20 +1859,12 @@ static const struct drm_encoder_funcs tda998x_encoder_funcs = {
.destroy = tda998x_encoder_destroy,
};
static int tda998x_bind(struct device *dev, struct device *master, void *data)
static int tda998x_encoder_init(struct device *dev, struct drm_device *drm)
{
struct i2c_client *client = to_i2c_client(dev);
struct drm_device *drm = data;
struct tda998x_priv *priv;
struct tda998x_priv *priv = dev_get_drvdata(dev);
u32 crtcs = 0;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev_set_drvdata(dev, priv);
if (dev->of_node)
crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
......@@ -1888,35 +1876,53 @@ static int tda998x_bind(struct device *dev, struct device *master, void *data)
priv->encoder.possible_crtcs = crtcs;
ret = tda998x_create(client, priv);
if (ret)
return ret;
drm_encoder_helper_add(&priv->encoder, &tda998x_encoder_helper_funcs);
ret = drm_encoder_init(drm, &priv->encoder, &tda998x_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
if (ret)
goto err_encoder;
ret = tda998x_connector_init(priv, drm);
ret = drm_bridge_attach(&priv->encoder, &priv->bridge, NULL);
if (ret)
goto err_connector;
goto err_bridge;
return 0;
err_connector:
err_bridge:
drm_encoder_cleanup(&priv->encoder);
err_encoder:
tda998x_destroy(priv);
return ret;
}
static int tda998x_bind(struct device *dev, struct device *master, void *data)
{
struct i2c_client *client = to_i2c_client(dev);
struct drm_device *drm = data;
struct tda998x_priv *priv;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev_set_drvdata(dev, priv);
ret = tda998x_create(client, priv);
if (ret)
return ret;
ret = tda998x_encoder_init(dev, drm);
if (ret) {
tda998x_destroy(priv);
return ret;
}
return 0;
}
static void tda998x_unbind(struct device *dev, struct device *master,
void *data)
{
struct tda998x_priv *priv = dev_get_drvdata(dev);
drm_connector_cleanup(&priv->connector);
drm_encoder_cleanup(&priv->encoder);
tda998x_destroy(priv);
}
......
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