| Message ID | 20181001123845.11818-8-heiko@sntech.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/rockchip: migrate to common dw-mipi-dsi bridge and dual-dsi | expand |
On 01.10.2018 14:38, Heiko Stuebner wrote: > Add the Rockchip-sepcific dual-dsi setup and hook it into the VOP as well. > As described in the general dual-dsi devicetree binding, the panel should > define two input ports and point each of them to one of the used dsi- > controllers, as well as declare one of them as clock-master. > This is used to determine the dual-dsi state and get access to both > controller instances. > > v6: > handle master+slave component in dsi-attach > v5: > use driver-internal mechanism to find dual dsi slave > v4: > add component directly in probe when adding empty dsi slave controller > > Signed-off-by: Heiko Stuebner <heiko@sntech.de> This is not what I really like (putting dual display functionality into poor dsi driver), but it at least works. So: Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> The patchset is quite long on the list so if there will be no objections I will merge it tomorrow. -- Regards Andrzej > --- > .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 136 ++++++++++++++++++ > drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 1 + > drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 3 + > drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 4 + > drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 1 + > 5 files changed, 145 insertions(+) > > diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c > index b3aae8439aa3..63b028602d08 100644 > --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c > +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c > @@ -218,6 +218,10 @@ struct dw_mipi_dsi_rockchip { > struct clk *grf_clk; > struct clk *phy_cfg_clk; > > + /* dual-channel */ > + bool is_slave; > + struct dw_mipi_dsi_rockchip *slave; > + > unsigned int lane_mbps; /* per lane */ > u16 input_div; > u16 feedback_div; > @@ -226,6 +230,7 @@ struct dw_mipi_dsi_rockchip { > struct dw_mipi_dsi *dmd; > const struct rockchip_dw_dsi_chip_data *cdata; > struct dw_mipi_dsi_plat_data pdata; > + int devcnt; > }; > > struct dphy_pll_parameter_map { > @@ -602,6 +607,8 @@ dw_mipi_dsi_encoder_atomic_check(struct drm_encoder *encoder, > } > > s->output_type = DRM_MODE_CONNECTOR_DSI; > + if (dsi->slave) > + s->output_flags = ROCKCHIP_OUTPUT_DSI_DUAL; > > return 0; > } > @@ -617,6 +624,8 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder) > return; > > pm_runtime_get_sync(dsi->dev); > + if (dsi->slave) > + pm_runtime_get_sync(dsi->slave->dev); > > /* > * For the RK3399, the clk of grf must be enabled before writing grf > @@ -630,6 +639,8 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder) > } > > dw_mipi_dsi_rockchip_config(dsi, mux); > + if (dsi->slave) > + dw_mipi_dsi_rockchip_config(dsi->slave, mux); > > clk_disable_unprepare(dsi->grf_clk); > } > @@ -638,6 +649,8 @@ static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder) > { > struct dw_mipi_dsi_rockchip *dsi = to_dsi(encoder); > > + if (dsi->slave) > + pm_runtime_put(dsi->slave->dev); > pm_runtime_put(dsi->dev); > } > > @@ -673,14 +686,113 @@ static int rockchip_dsi_drm_create_encoder(struct dw_mipi_dsi_rockchip *dsi, > return 0; > } > > +static struct device > +*dw_mipi_dsi_rockchip_find_second(struct dw_mipi_dsi_rockchip *dsi) > +{ > + const struct of_device_id *match; > + struct device_node *node = NULL, *local; > + > + match = of_match_device(dsi->dev->driver->of_match_table, dsi->dev); > + > + local = of_graph_get_remote_node(dsi->dev->of_node, 1, 0); > + if (!local) > + return NULL; > + > + while ((node = of_find_compatible_node(node, NULL, > + match->compatible))) { > + struct device_node *remote; > + > + /* found ourself */ > + if (node == dsi->dev->of_node) > + continue; > + > + remote = of_graph_get_remote_node(node, 1, 0); > + if (!remote) > + continue; > + > + /* same display device in port1-ep0 for both */ > + if (remote == local) { > + struct dw_mipi_dsi_rockchip *dsi2; > + struct platform_device *pdev; > + > + pdev = of_find_device_by_node(node); > + > + /* > + * we have found the second, so will either return it > + * or return with an error. In any case won't need the > + * nodes anymore nor continue the loop. > + */ > + of_node_put(remote); > + of_node_put(node); > + of_node_put(local); > + > + if (!pdev) > + return ERR_PTR(-EPROBE_DEFER); > + > + dsi2 = platform_get_drvdata(pdev); > + if (!dsi2) { > + platform_device_put(pdev); > + return ERR_PTR(-EPROBE_DEFER); > + } > + > + return &pdev->dev; > + } > + > + of_node_put(remote); > + } > + > + of_node_put(local); > + > + return NULL; > +} > + > static int dw_mipi_dsi_rockchip_bind(struct device *dev, > struct device *master, > void *data) > { > struct dw_mipi_dsi_rockchip *dsi = dev_get_drvdata(dev); > struct drm_device *drm_dev = data; > + struct device *second; > + bool master1, master2; > int ret; > > + second = dw_mipi_dsi_rockchip_find_second(dsi); > + if (IS_ERR(second)) > + return PTR_ERR(second); > + > + if (second) { > + master1 = of_property_read_bool(dsi->dev->of_node, > + "clock-master"); > + master2 = of_property_read_bool(second->of_node, > + "clock-master"); > + > + if (master1 && master2) { > + DRM_DEV_ERROR(dsi->dev, "only one clock-master allowed\n"); > + return -EINVAL; > + } > + > + if (!master1 && !master2) { > + DRM_DEV_ERROR(dsi->dev, "no clock-master defined\n"); > + return -EINVAL; > + } > + > + /* we are the slave in dual-DSI */ > + if (!master1) { > + dsi->is_slave = true; > + return 0; > + } > + > + dsi->slave = dev_get_drvdata(second); > + if (!dsi->slave) { > + DRM_DEV_ERROR(dev, "could not get slaves data\n"); > + return -ENODEV; > + } > + > + dsi->slave->is_slave = true; > + dw_mipi_dsi_set_slave(dsi->dmd, dsi->slave->dmd); > + put_device(second); > + } > + > ret = clk_prepare_enable(dsi->pllref_clk); > if (ret) { > DRM_DEV_ERROR(dev, "Failed to enable pllref_clk: %d\n", ret); > @@ -708,6 +819,9 @@ static void dw_mipi_dsi_rockchip_unbind(struct device *dev, > { > struct dw_mipi_dsi_rockchip *dsi = dev_get_drvdata(dev); > > + if (dsi->is_slave) > + return; > + > dw_mipi_dsi_unbind(dsi->dmd); > > clk_disable_unprepare(dsi->pllref_clk); > @@ -722,6 +836,7 @@ static int dw_mipi_dsi_rockchip_host_attach(void *priv_data, > struct mipi_dsi_device *device) > { > struct dw_mipi_dsi_rockchip *dsi = priv_data; > + struct device *second; > int ret; > > ret = component_add(dsi->dev, &dw_mipi_dsi_rockchip_ops); > @@ -731,6 +846,19 @@ static int dw_mipi_dsi_rockchip_host_attach(void *priv_data, > return ret; > } > > + second = dw_mipi_dsi_rockchip_find_second(dsi); > + if (IS_ERR(second)) > + return PTR_ERR(second); > + if (second) { > + ret = component_add(second, &dw_mipi_dsi_rockchip_ops); > + if (ret) { > + DRM_DEV_ERROR(second, > + "Failed to register component: %d\n", > + ret); > + return ret; > + } > + } > + > return 0; > } > > @@ -738,6 +866,11 @@ static int dw_mipi_dsi_rockchip_host_detach(void *priv_data, > struct mipi_dsi_device *device) > { > struct dw_mipi_dsi_rockchip *dsi = priv_data; > + struct device *second; > + > + second = dw_mipi_dsi_rockchip_find_second(dsi); > + if (second && !IS_ERR(second)) > + component_del(second, &dw_mipi_dsi_rockchip_ops); > > component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops); > > @@ -846,6 +979,9 @@ static int dw_mipi_dsi_rockchip_remove(struct platform_device *pdev) > { > struct dw_mipi_dsi_rockchip *dsi = platform_get_drvdata(pdev); > > + if (dsi->devcnt == 0) > + component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops); > + > dw_mipi_dsi_remove(dsi->dmd); > > return 0; > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h > index 453fef6a55b9..ce48568ec8a0 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h > @@ -37,6 +37,7 @@ struct rockchip_crtc_state { > int output_type; > int output_mode; > int output_bpc; > + int output_flags; > }; > #define to_rockchip_crtc_state(s) \ > container_of(s, struct rockchip_crtc_state, base) > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > index 0c35a88e33dd..fb70fb486fbf 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > @@ -916,6 +916,7 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc, > pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) ? > BIT(VSYNC_POSITIVE) : 0; > VOP_REG_SET(vop, output, pin_pol, pin_pol); > + VOP_REG_SET(vop, output, mipi_dual_channel_en, 0); > > switch (s->output_type) { > case DRM_MODE_CONNECTOR_LVDS: > @@ -933,6 +934,8 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc, > case DRM_MODE_CONNECTOR_DSI: > VOP_REG_SET(vop, output, mipi_pin_pol, pin_pol); > VOP_REG_SET(vop, output, mipi_en, 1); > + VOP_REG_SET(vop, output, mipi_dual_channel_en, > + !!(s->output_flags & ROCKCHIP_OUTPUT_DSI_DUAL)); > break; > case DRM_MODE_CONNECTOR_DisplayPort: > pin_pol &= ~BIT(DCLK_INVERT); > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h > index fd5765dfd637..0fe40e1983d9 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h > @@ -60,6 +60,7 @@ struct vop_output { > struct vop_reg edp_en; > struct vop_reg hdmi_en; > struct vop_reg mipi_en; > + struct vop_reg mipi_dual_channel_en; > struct vop_reg rgb_en; > }; > > @@ -214,6 +215,9 @@ struct vop_data { > /* for use special outface */ > #define ROCKCHIP_OUT_MODE_AAAA 15 > > +/* output flags */ > +#define ROCKCHIP_OUTPUT_DSI_DUAL BIT(0) > + > enum alpha_mode { > ALPHA_STRAIGHT, > ALPHA_INVERSE, > diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c > index 047a8867af90..08fc40af52c8 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c > +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c > @@ -634,6 +634,7 @@ static const struct vop_output rk3399_output = { > .hdmi_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 13), > .edp_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 14), > .mipi_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 15), > + .mipi_dual_channel_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 3), > }; > > static const struct vop_data rk3399_vop_big = {
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index b3aae8439aa3..63b028602d08 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -218,6 +218,10 @@ struct dw_mipi_dsi_rockchip { struct clk *grf_clk; struct clk *phy_cfg_clk; + /* dual-channel */ + bool is_slave; + struct dw_mipi_dsi_rockchip *slave; + unsigned int lane_mbps; /* per lane */ u16 input_div; u16 feedback_div; @@ -226,6 +230,7 @@ struct dw_mipi_dsi_rockchip { struct dw_mipi_dsi *dmd; const struct rockchip_dw_dsi_chip_data *cdata; struct dw_mipi_dsi_plat_data pdata; + int devcnt; }; struct dphy_pll_parameter_map { @@ -602,6 +607,8 @@ dw_mipi_dsi_encoder_atomic_check(struct drm_encoder *encoder, } s->output_type = DRM_MODE_CONNECTOR_DSI; + if (dsi->slave) + s->output_flags = ROCKCHIP_OUTPUT_DSI_DUAL; return 0; } @@ -617,6 +624,8 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder) return; pm_runtime_get_sync(dsi->dev); + if (dsi->slave) + pm_runtime_get_sync(dsi->slave->dev); /* * For the RK3399, the clk of grf must be enabled before writing grf @@ -630,6 +639,8 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder) } dw_mipi_dsi_rockchip_config(dsi, mux); + if (dsi->slave) + dw_mipi_dsi_rockchip_config(dsi->slave, mux); clk_disable_unprepare(dsi->grf_clk); } @@ -638,6 +649,8 @@ static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder) { struct dw_mipi_dsi_rockchip *dsi = to_dsi(encoder); + if (dsi->slave) + pm_runtime_put(dsi->slave->dev); pm_runtime_put(dsi->dev); } @@ -673,14 +686,113 @@ static int rockchip_dsi_drm_create_encoder(struct dw_mipi_dsi_rockchip *dsi, return 0; } +static struct device +*dw_mipi_dsi_rockchip_find_second(struct dw_mipi_dsi_rockchip *dsi) +{ + const struct of_device_id *match; + struct device_node *node = NULL, *local; + + match = of_match_device(dsi->dev->driver->of_match_table, dsi->dev); + + local = of_graph_get_remote_node(dsi->dev->of_node, 1, 0); + if (!local) + return NULL; + + while ((node = of_find_compatible_node(node, NULL, + match->compatible))) { + struct device_node *remote; + + /* found ourself */ + if (node == dsi->dev->of_node) + continue; + + remote = of_graph_get_remote_node(node, 1, 0); + if (!remote) + continue; + + /* same display device in port1-ep0 for both */ + if (remote == local) { + struct dw_mipi_dsi_rockchip *dsi2; + struct platform_device *pdev; + + pdev = of_find_device_by_node(node); + + /* + * we have found the second, so will either return it + * or return with an error. In any case won't need the + * nodes anymore nor continue the loop. + */ + of_node_put(remote); + of_node_put(node); + of_node_put(local); + + if (!pdev) + return ERR_PTR(-EPROBE_DEFER); + + dsi2 = platform_get_drvdata(pdev); + if (!dsi2) { + platform_device_put(pdev); + return ERR_PTR(-EPROBE_DEFER); + } + + return &pdev->dev; + } + + of_node_put(remote); + } + + of_node_put(local); + + return NULL; +} + static int dw_mipi_dsi_rockchip_bind(struct device *dev, struct device *master, void *data) { struct dw_mipi_dsi_rockchip *dsi = dev_get_drvdata(dev); struct drm_device *drm_dev = data; + struct device *second; + bool master1, master2; int ret; + second = dw_mipi_dsi_rockchip_find_second(dsi); + if (IS_ERR(second)) + return PTR_ERR(second); + + if (second) { + master1 = of_property_read_bool(dsi->dev->of_node, + "clock-master"); + master2 = of_property_read_bool(second->of_node, + "clock-master"); + + if (master1 && master2) { + DRM_DEV_ERROR(dsi->dev, "only one clock-master allowed\n"); + return -EINVAL; + } + + if (!master1 && !master2) { + DRM_DEV_ERROR(dsi->dev, "no clock-master defined\n"); + return -EINVAL; + } + + /* we are the slave in dual-DSI */ + if (!master1) { + dsi->is_slave = true; + return 0; + } + + dsi->slave = dev_get_drvdata(second); + if (!dsi->slave) { + DRM_DEV_ERROR(dev, "could not get slaves data\n"); + return -ENODEV; + } + + dsi->slave->is_slave = true; + dw_mipi_dsi_set_slave(dsi->dmd, dsi->slave->dmd); + put_device(second); + } + ret = clk_prepare_enable(dsi->pllref_clk); if (ret) { DRM_DEV_ERROR(dev, "Failed to enable pllref_clk: %d\n", ret); @@ -708,6 +819,9 @@ static void dw_mipi_dsi_rockchip_unbind(struct device *dev, { struct dw_mipi_dsi_rockchip *dsi = dev_get_drvdata(dev); + if (dsi->is_slave) + return; + dw_mipi_dsi_unbind(dsi->dmd); clk_disable_unprepare(dsi->pllref_clk); @@ -722,6 +836,7 @@ static int dw_mipi_dsi_rockchip_host_attach(void *priv_data, struct mipi_dsi_device *device) { struct dw_mipi_dsi_rockchip *dsi = priv_data; + struct device *second; int ret; ret = component_add(dsi->dev, &dw_mipi_dsi_rockchip_ops); @@ -731,6 +846,19 @@ static int dw_mipi_dsi_rockchip_host_attach(void *priv_data, return ret; } + second = dw_mipi_dsi_rockchip_find_second(dsi); + if (IS_ERR(second)) + return PTR_ERR(second); + if (second) { + ret = component_add(second, &dw_mipi_dsi_rockchip_ops); + if (ret) { + DRM_DEV_ERROR(second, + "Failed to register component: %d\n", + ret); + return ret; + } + } + return 0; } @@ -738,6 +866,11 @@ static int dw_mipi_dsi_rockchip_host_detach(void *priv_data, struct mipi_dsi_device *device) { struct dw_mipi_dsi_rockchip *dsi = priv_data; + struct device *second; + + second = dw_mipi_dsi_rockchip_find_second(dsi); + if (second && !IS_ERR(second)) + component_del(second, &dw_mipi_dsi_rockchip_ops); component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops); @@ -846,6 +979,9 @@ static int dw_mipi_dsi_rockchip_remove(struct platform_device *pdev) { struct dw_mipi_dsi_rockchip *dsi = platform_get_drvdata(pdev); + if (dsi->devcnt == 0) + component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops); + dw_mipi_dsi_remove(dsi->dmd); return 0; diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h index 453fef6a55b9..ce48568ec8a0 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h @@ -37,6 +37,7 @@ struct rockchip_crtc_state { int output_type; int output_mode; int output_bpc; + int output_flags; }; #define to_rockchip_crtc_state(s) \ container_of(s, struct rockchip_crtc_state, base) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index 0c35a88e33dd..fb70fb486fbf 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -916,6 +916,7 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc, pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) ? BIT(VSYNC_POSITIVE) : 0; VOP_REG_SET(vop, output, pin_pol, pin_pol); + VOP_REG_SET(vop, output, mipi_dual_channel_en, 0); switch (s->output_type) { case DRM_MODE_CONNECTOR_LVDS: @@ -933,6 +934,8 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc, case DRM_MODE_CONNECTOR_DSI: VOP_REG_SET(vop, output, mipi_pin_pol, pin_pol); VOP_REG_SET(vop, output, mipi_en, 1); + VOP_REG_SET(vop, output, mipi_dual_channel_en, + !!(s->output_flags & ROCKCHIP_OUTPUT_DSI_DUAL)); break; case DRM_MODE_CONNECTOR_DisplayPort: pin_pol &= ~BIT(DCLK_INVERT); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h index fd5765dfd637..0fe40e1983d9 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h @@ -60,6 +60,7 @@ struct vop_output { struct vop_reg edp_en; struct vop_reg hdmi_en; struct vop_reg mipi_en; + struct vop_reg mipi_dual_channel_en; struct vop_reg rgb_en; }; @@ -214,6 +215,9 @@ struct vop_data { /* for use special outface */ #define ROCKCHIP_OUT_MODE_AAAA 15 +/* output flags */ +#define ROCKCHIP_OUTPUT_DSI_DUAL BIT(0) + enum alpha_mode { ALPHA_STRAIGHT, ALPHA_INVERSE, diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c index 047a8867af90..08fc40af52c8 100644 --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c @@ -634,6 +634,7 @@ static const struct vop_output rk3399_output = { .hdmi_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 13), .edp_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 14), .mipi_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 15), + .mipi_dual_channel_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 3), }; static const struct vop_data rk3399_vop_big = {
Add the Rockchip-sepcific dual-dsi setup and hook it into the VOP as well. As described in the general dual-dsi devicetree binding, the panel should define two input ports and point each of them to one of the used dsi- controllers, as well as declare one of them as clock-master. This is used to determine the dual-dsi state and get access to both controller instances. v6: handle master+slave component in dsi-attach v5: use driver-internal mechanism to find dual dsi slave v4: add component directly in probe when adding empty dsi slave controller Signed-off-by: Heiko Stuebner <heiko@sntech.de> --- .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 136 ++++++++++++++++++ drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 1 + drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 3 + drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 4 + drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 1 + 5 files changed, 145 insertions(+)