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drm/i2c: tda998x: add OF support for finding attached CRTCs

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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>
This commit is contained in:
Russell King 2014-06-15 11:11:10 +01:00
parent 97bf6af1f9
commit 5dbcf319b2
1 changed files with 12 additions and 1 deletions
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13
drivers/gpu/drm/i2c/tda998x_drv.c
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@ -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)