diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-06-15 10:11:10 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-01-16 17:45:48 (GMT) |
| commit | 5dbcf319b283276468a52feafefeb5802d87cb8a (patch) | |
| tree | 2611bd126299e6e8cdac2bb60f575991b0daf7aa /drivers/gpu/drm/i2c | |
| parent | 97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff) | |
| download | linux-5dbcf319b283276468a52feafefeb5802d87cb8a.tar.xz | |
drm/i2c: tda998x: add OF support for finding attached CRTCs
Add support to find the attached CRTCs via OF using the newly introduced
helper.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/i2c')
| -rw-r--r-- | drivers/gpu/drm/i2c/tda998x_drv.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index d476279..4dcf474 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -25,6 +25,7 @@ #include <drm/drm_crtc_helper.h> #include <drm/drm_encoder_slave.h> #include <drm/drm_edid.h> +#include <drm/drm_of.h> #include <drm/i2c/tda998x.h> #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) @@ -1515,6 +1516,7 @@ 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_priv2 *priv; + uint32_t crtcs = 0; int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); @@ -1523,9 +1525,18 @@ static int tda998x_bind(struct device *dev, struct device *master, void *data) dev_set_drvdata(dev, priv); + if (dev->of_node) + crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); + + /* If no CRTCs were found, fall back to our old behaviour */ + if (crtcs == 0) { + dev_warn(dev, "Falling back to first CRTC\n"); + crtcs = 1 << 0; + } + priv->base.encoder = &priv->encoder; priv->connector.interlace_allowed = 1; - priv->encoder.possible_crtcs = 1 << 0; + priv->encoder.possible_crtcs = crtcs; ret = tda998x_create(client, &priv->base); if (ret) |