diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/phy/dsi_phy.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index e2f42d8ea294..f39386ed75e4 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -271,6 +271,30 @@ static const struct of_device_id dsi_phy_dt_match[] = { {} }; +/* + * Currently, we only support one SoC for each PHY type. When we have multiple + * SoCs for the same PHY, we can try to make the index searching a bit more + * clever. + */ +static int dsi_phy_get_id(struct msm_dsi_phy *phy) +{ + struct platform_device *pdev = phy->pdev; + const struct msm_dsi_phy_cfg *cfg = phy->cfg; + struct resource *res; + int i; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dsi_phy"); + if (!res) + return -EINVAL; + + for (i = 0; i < cfg->num_dsi_phy; i++) { + if (cfg->io_start[i] == res->start) + return i; + } + + return -EINVAL; +} + static int dsi_phy_driver_probe(struct platform_device *pdev) { struct msm_dsi_phy *phy; @@ -289,10 +313,10 @@ static int dsi_phy_driver_probe(struct platform_device *pdev) phy->cfg = match->data; phy->pdev = pdev; - ret = of_property_read_u32(dev->of_node, - "qcom,dsi-phy-index", &phy->id); - if (ret) { - dev_err(dev, "%s: PHY index not specified, %d\n", + phy->id = dsi_phy_get_id(phy); + if (phy->id < 0) { + ret = phy->id; + dev_err(dev, "%s: couldn't identify PHY index, %d\n", __func__, ret); goto fail; } |