drm/bridge: cdns-dsi: Add support for J721E wrapper

Add support for wrapper settings for DSI bridge on j721e. Also enable
DPI0

---------------      -----------------------
|      -------|      |-------              |
| DSS  | DPI2 |----->| DPI0 |  DSI Wrapper |
|      -------|      |-------              |
---------------      -----------------------

As shown above DPI2 output of DSS is connected to DPI0 input of DSI
Wrapper, DSI wrapper gives control wheather to enable/disable DPI0
input. In j721e above is the only configuration supported

Signed-off-by: Rahul T R <r-ravikumar@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230103101951.10963-6-r-ravikumar@ti.com

1 files changed, 34 insertions, 1 deletions

diff --git a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
index 058349bfeb67..5dbfc7226b31 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
@@ -15,6 +15,7 @@
 #include <linux/iopoll.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
+#include <linux/of_device.h>
 #include <linux/of_graph.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
@@ -23,6 +24,9 @@
 #include <linux/phy/phy-mipi-dphy.h>
 
 #include "cdns-dsi-core.h"
+#ifdef CONFIG_DRM_CDNS_DSI_J721E
+#include "cdns-dsi-j721e.h"
+#endif
 
 #define IP_CONF				0x0
 #define SP_HS_FIFO_DEPTH(x)		(((x) & GENMASK(30, 26)) >> 26)
@@ -665,6 +669,10 @@ static void cdns_dsi_bridge_disable(struct drm_bridge *bridge)
 
 	val = readl(dsi->regs + MCTL_MAIN_EN) & ~IF_EN(input->id);
 	writel(val, dsi->regs + MCTL_MAIN_EN);
+
+	if (dsi->platform_ops && dsi->platform_ops->disable)
+		dsi->platform_ops->disable(dsi);
+
 	pm_runtime_put(dsi->base.dev);
 }
 
@@ -760,6 +768,9 @@ static void cdns_dsi_bridge_enable(struct drm_bridge *bridge)
 	if (WARN_ON(pm_runtime_get_sync(dsi->base.dev) < 0))
 		return;
 
+	if (dsi->platform_ops && dsi->platform_ops->enable)
+		dsi->platform_ops->enable(dsi);
+
 	mode = &bridge->encoder->crtc->state->adjusted_mode;
 	nlanes = output->dev->lanes;
 
@@ -1200,6 +1211,8 @@ static int cdns_dsi_drm_probe(struct platform_device *pdev)
 		goto err_disable_pclk;
 	}
 
+	dsi->platform_ops = of_device_get_match_data(&pdev->dev);
+
 	val = readl(dsi->regs + IP_CONF);
 	dsi->direct_cmd_fifo_depth = 1 << (DIRCMD_FIFO_DEPTH(val) + 2);
 	dsi->rx_fifo_depth = RX_FIFO_DEPTH(val);
@@ -1235,14 +1248,27 @@ static int cdns_dsi_drm_probe(struct platform_device *pdev)
 	dsi->base.dev = &pdev->dev;
 	dsi->base.ops = &cdns_dsi_ops;
 
+	if (dsi->platform_ops && dsi->platform_ops->init) {
+		ret = dsi->platform_ops->init(dsi);
+		if (ret != 0) {
+			dev_err(&pdev->dev, "platform initialization failed: %d\n",
+				ret);
+			goto err_disable_runtime_pm;
+		}
+	}
+
 	ret = mipi_dsi_host_register(&dsi->base);
 	if (ret)
-		goto err_disable_runtime_pm;
+		goto err_deinit_platform;
 
 	clk_disable_unprepare(dsi->dsi_p_clk);
 
 	return 0;
 
+err_deinit_platform:
+	if (dsi->platform_ops && dsi->platform_ops->deinit)
+		dsi->platform_ops->deinit(dsi);
+
 err_disable_runtime_pm:
 	pm_runtime_disable(&pdev->dev);
 
@@ -1257,6 +1283,10 @@ static int cdns_dsi_drm_remove(struct platform_device *pdev)
 	struct cdns_dsi *dsi = platform_get_drvdata(pdev);
 
 	mipi_dsi_host_unregister(&dsi->base);
+
+	if (dsi->platform_ops && dsi->platform_ops->deinit)
+		dsi->platform_ops->deinit(dsi);
+
 	pm_runtime_disable(&pdev->dev);
 
 	return 0;
@@ -1264,6 +1294,9 @@ static int cdns_dsi_drm_remove(struct platform_device *pdev)
 
 static const struct of_device_id cdns_dsi_of_match[] = {
 	{ .compatible = "cdns,dsi" },
+#ifdef CONFIG_DRM_CDNS_DSI_J721E
+	{ .compatible = "ti,j721e-dsi", .data = &dsi_ti_j721e_ops, },
+#endif
 	{ },
 };
 MODULE_DEVICE_TABLE(of, cdns_dsi_of_match);