[PATCH v2 09/10] drm/hisilicon: Add dsi host driver
From: xinliang.liu@linaro.org (Xinliang Liu)
Date: 2015-11-28 10:39:04
Also in:
dri-devel, linux-devicetree
Subsystem:
drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
Add dsi host driver for hi6220 SoC. Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> Signed-off-by: Xinwei Kong <kong.kongxinwei@hisilicon.com> Signed-off-by: Andy Green <redacted> --- drivers/gpu/drm/hisilicon/hisi_drm_dsi.c | 50 ++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+)
diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c b/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c
index 7a6cf66..066e08d 100644
--- a/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c
+++ b/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c@@ -78,6 +78,7 @@ struct dsi_hw_ctx { struct hisi_dsi { struct drm_encoder encoder; + struct mipi_dsi_host host; struct drm_display_mode cur_mode; struct dsi_hw_ctx *ctx; struct mipi_phy_register phy;
@@ -625,6 +626,51 @@ static int hisi_drm_encoder_init(struct drm_device *dev, return 0; } +static int dsi_host_attach(struct mipi_dsi_host *host, + struct mipi_dsi_device *mdsi) +{ + struct hisi_dsi *dsi = host_to_dsi(host); + + if (mdsi->lanes < 1 || mdsi->lanes > 4) { + DRM_ERROR("dsi device params invalid\n"); + return -EINVAL; + } + + dsi->lanes = mdsi->lanes; + dsi->format = mdsi->format; + dsi->mode_flags = mdsi->mode_flags; + + return 0; +} + +static int dsi_host_detach(struct mipi_dsi_host *host, + struct mipi_dsi_device *mdsi) +{ + /* do nothing */ + return 0; +} + +static struct mipi_dsi_host_ops dsi_host_ops = { + .attach = dsi_host_attach, + .detach = dsi_host_detach, +}; + +static int dsi_host_init(struct device *dev, struct hisi_dsi *dsi) +{ + struct mipi_dsi_host *host = &dsi->host; + int ret; + + host->dev = dev; + host->ops = &dsi_host_ops; + ret = mipi_dsi_host_register(host); + if (ret) { + DRM_ERROR("failed to register dsi host\n"); + return ret; + } + + return 0; +} + static int dsi_bind(struct device *dev, struct device *master, void *data) { struct dsi_data *ddata = dev_get_drvdata(dev);
@@ -636,6 +682,10 @@ static int dsi_bind(struct device *dev, struct device *master, void *data) if (ret) return ret; + ret = dsi_host_init(dev, dsi); + if (ret) + return ret; + return 0; }
--
1.9.1