On 2/26/2016 2:10 PM, Xinliang Liu wrote:
> Add DesignWare dsi host driver for hi6220 SoC.
>
> v6: None.
> v5: None.
> v4: None.
> v3: None.
> v2:
> - Remove abtraction layer.
Reviewed-by: Archit Taneja <architt at codeaurora.org>
>
> Signed-off-by: Xinliang Liu <xinliang.liu at linaro.org>
> ---
> drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 50
> ++++++++++++++++++++++++++++
> 1 file changed, 50 insertions(+)
>
> diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
> b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
> index 8329148cc89d..f15798b61451 100644
> --- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
> +++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
> @@ -79,6 +79,7 @@ struct dsi_hw_ctx {
>
> struct dw_dsi {
> struct drm_encoder encoder;
> + struct mipi_dsi_host host;
> struct drm_display_mode cur_mode;
> struct dsi_hw_ctx *ctx;
> struct mipi_phy_params phy;
> @@ -642,6 +643,51 @@ static int dw_drm_encoder_init(struct device *dev,
> return 0;
> }
>
> +static int dsi_host_attach(struct mipi_dsi_host *host,
> + struct mipi_dsi_device *mdsi)
> +{
> + struct dw_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 const 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 dw_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);
> @@ -653,6 +699,10 @@ 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;
> }
>
>
--
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