diff options
Diffstat (limited to 'drivers/video/fbdev/omap2/dss/hdmi_common.c')
| -rw-r--r-- | drivers/video/fbdev/omap2/dss/hdmi_common.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/video/fbdev/omap2/dss/hdmi_common.c b/drivers/video/fbdev/omap2/dss/hdmi_common.c index 0b12a3f62fe1..9a2c39cf297f 100644 --- a/drivers/video/fbdev/omap2/dss/hdmi_common.c +++ b/drivers/video/fbdev/omap2/dss/hdmi_common.c @@ -17,6 +17,7 @@ #include <linux/kernel.h> #include <linux/err.h> +#include <linux/of.h> #include <video/omapdss.h> #include "hdmi.h" @@ -323,6 +324,46 @@ end: return cm; } +int hdmi_parse_lanes_of(struct platform_device *pdev, struct device_node *ep, + struct hdmi_phy_data *phy) +{ + struct property *prop; + int r, len; + + prop = of_find_property(ep, "lanes", &len); + if (prop) { + u32 lanes[8]; + + if (len / sizeof(u32) != ARRAY_SIZE(lanes)) { + dev_err(&pdev->dev, "bad number of lanes\n"); + return -EINVAL; + } + + r = of_property_read_u32_array(ep, "lanes", lanes, + ARRAY_SIZE(lanes)); + if (r) { + dev_err(&pdev->dev, "failed to read lane data\n"); + return r; + } + + r = hdmi_phy_parse_lanes(phy, lanes); + if (r) { + dev_err(&pdev->dev, "failed to parse lane data\n"); + return r; + } + } else { + static const u32 default_lanes[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; + + r = hdmi_phy_parse_lanes(phy, default_lanes); + if (WARN_ON(r)) { + dev_err(&pdev->dev, "failed to parse lane data\n"); + return r; + } + } + + return 0; +} + #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) int hdmi_compute_acr(u32 pclk, u32 sample_freq, u32 *n, u32 *cts) { |