diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index ad50b8022..1f2561e2f 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -23,12 +23,47 @@ struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi) msm_dsi->encoders[MSM_DSI_CMD_ENCODER_ID]; } +static int dsi_get_phy(struct msm_dsi *msm_dsi) +{ + struct platform_device *pdev = msm_dsi->pdev; + struct platform_device *phy_pdev; + struct device_node *phy_node; + + phy_node = of_parse_phandle(pdev->dev.of_node, "qcom,dsi-phy", 0); + if (!phy_node) { + dev_err(&pdev->dev, "cannot find phy device\n"); + return -ENXIO; + } + + phy_pdev = of_find_device_by_node(phy_node); + if (phy_pdev) + msm_dsi->phy = platform_get_drvdata(phy_pdev); + + of_node_put(phy_node); + + if (!phy_pdev || !msm_dsi->phy) { + dev_err(&pdev->dev, "%s: phy driver is not ready\n", __func__); + return -EPROBE_DEFER; + } + + msm_dsi->phy_dev = get_device(&phy_pdev->dev); + + return 0; +} + static void dsi_destroy(struct msm_dsi *msm_dsi) { if (!msm_dsi) return; msm_dsi_manager_unregister(msm_dsi); + + if (msm_dsi->phy_dev) { + put_device(msm_dsi->phy_dev); + msm_dsi->phy = NULL; + msm_dsi->phy_dev = NULL; + } + if (msm_dsi->host) { msm_dsi_host_destroy(msm_dsi->host); msm_dsi->host = NULL; @@ -43,7 +78,6 @@ static struct msm_dsi *dsi_init(struct platform_device *pdev) int ret; if (!pdev) { - dev_err(&pdev->dev, "no dsi device\n"); ret = -ENXIO; goto fail; } @@ -63,6 +97,11 @@ static struct msm_dsi *dsi_init(struct platform_device *pdev) if (ret) goto fail; + /* GET dsi PHY */ + ret = dsi_get_phy(msm_dsi); + if (ret) + goto fail; + /* Register to dsi manager */ ret = msm_dsi_manager_register(msm_dsi); if (ret) @@ -142,12 +181,14 @@ static struct platform_driver dsi_driver = { void __init msm_dsi_register(void) { DBG(""); + msm_dsi_phy_driver_register(); platform_driver_register(&dsi_driver); } void __exit msm_dsi_unregister(void) { DBG(""); + msm_dsi_phy_driver_unregister(); platform_driver_unregister(&dsi_driver); } |