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Commit 834480d2 authored by Xinliang Liu's avatar Xinliang Liu
Browse files

drm/hisilicon: Add designware dsi host driver 



Add DesignWare dsi host driver for hi6220 SoC.

v8: None.
v7: None.
v6: None.
v5: None.
v4: None.
v3: None.
v2:
- Remove abtraction layer.

Signed-off-by: default avatarXinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: default avatarXinwei Kong <kong.kongxinwei@hisilicon.com>
Reviewed-by: default avatarArchit Taneja <architt@codeaurora.org>
parent f819b0d4

drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c

+50 −0
Original line number Diff line number Diff line
@@ -80,6 +80,7 @@ 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;
@@ -654,6 +655,51 @@ 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);
@@ -665,6 +711,10 @@ 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;

}